idx int64 | func_before string | Vulnerability Classification string | vul int64 | func_after string | patch string | CWE ID string | lines_before string | lines_after string |
|---|---|---|---|---|---|---|---|---|
18,200 | int udp_v6_get_port(struct sock *sk, unsigned short snum)
{
unsigned int hash2_nulladdr =
udp6_portaddr_hash(sock_net(sk), &in6addr_any, snum);
unsigned int hash2_partial =
udp6_portaddr_hash(sock_net(sk), &inet6_sk(sk)->rcv_saddr, 0);
/* precompute partial secondary hash */
udp_sk(sk)->udp_portaddr_hash = hash2_partial;
return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal, hash2_nulladdr);
}
| DoS | 0 | int udp_v6_get_port(struct sock *sk, unsigned short snum)
{
unsigned int hash2_nulladdr =
udp6_portaddr_hash(sock_net(sk), &in6addr_any, snum);
unsigned int hash2_partial =
udp6_portaddr_hash(sock_net(sk), &inet6_sk(sk)->rcv_saddr, 0);
/* precompute partial secondary hash */
udp_sk(sk)->udp_portaddr_hash = hash2_partial;
return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal, hash2_nulladdr);
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,201 | static struct sock *udp_v6_mcast_next(struct net *net, struct sock *sk,
__be16 loc_port, struct in6_addr *loc_addr,
__be16 rmt_port, struct in6_addr *rmt_addr,
int dif)
{
struct hlist_nulls_node *node;
struct sock *s = sk;
unsigned short num = ntohs(loc_port);
sk_nulls_for_each_from(s, node) {
struct inet_sock *inet = inet_sk(s);
if (!net_eq(sock_net(s), net))
continue;
if (udp_sk(s)->udp_port_hash == num &&
s->sk_family == PF_INET6) {
struct ipv6_pinfo *np = inet6_sk(s);
if (inet->inet_dport) {
if (inet->inet_dport != rmt_port)
continue;
}
if (!ipv6_addr_any(&np->daddr) &&
!ipv6_addr_equal(&np->daddr, rmt_addr))
continue;
if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif)
continue;
if (!ipv6_addr_any(&np->rcv_saddr)) {
if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr))
continue;
}
if (!inet6_mc_check(s, loc_addr, rmt_addr))
continue;
return s;
}
}
return NULL;
}
| DoS | 0 | static struct sock *udp_v6_mcast_next(struct net *net, struct sock *sk,
__be16 loc_port, struct in6_addr *loc_addr,
__be16 rmt_port, struct in6_addr *rmt_addr,
int dif)
{
struct hlist_nulls_node *node;
struct sock *s = sk;
unsigned short num = ntohs(loc_port);
sk_nulls_for_each_from(s, node) {
struct inet_sock *inet = inet_sk(s);
if (!net_eq(sock_net(s), net))
continue;
if (udp_sk(s)->udp_port_hash == num &&
s->sk_family == PF_INET6) {
struct ipv6_pinfo *np = inet6_sk(s);
if (inet->inet_dport) {
if (inet->inet_dport != rmt_port)
continue;
}
if (!ipv6_addr_any(&np->daddr) &&
!ipv6_addr_equal(&np->daddr, rmt_addr))
continue;
if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif)
continue;
if (!ipv6_addr_any(&np->rcv_saddr)) {
if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr))
continue;
}
if (!inet6_mc_check(s, loc_addr, rmt_addr))
continue;
return s;
}
}
return NULL;
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,202 | static int udp_v6_push_pending_frames(struct sock *sk)
{
struct sk_buff *skb;
struct udphdr *uh;
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct flowi6 *fl6 = &inet->cork.fl.u.ip6;
int err = 0;
int is_udplite = IS_UDPLITE(sk);
__wsum csum = 0;
/* Grab the skbuff where UDP header space exists. */
if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
goto out;
/*
* Create a UDP header
*/
uh = udp_hdr(skb);
uh->source = fl6->fl6_sport;
uh->dest = fl6->fl6_dport;
uh->len = htons(up->len);
uh->check = 0;
if (is_udplite)
csum = udplite_csum_outgoing(sk, skb);
else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */
udp6_hwcsum_outgoing(sk, skb, &fl6->saddr, &fl6->daddr,
up->len);
goto send;
} else
csum = udp_csum_outgoing(sk, skb);
/* add protocol-dependent pseudo-header */
uh->check = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,
up->len, fl6->flowi6_proto, csum);
if (uh->check == 0)
uh->check = CSUM_MANGLED_0;
send:
err = ip6_push_pending_frames(sk);
if (err) {
if (err == -ENOBUFS && !inet6_sk(sk)->recverr) {
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_SNDBUFERRORS, is_udplite);
err = 0;
}
} else
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_OUTDATAGRAMS, is_udplite);
out:
up->len = 0;
up->pending = 0;
return err;
}
| DoS | 0 | static int udp_v6_push_pending_frames(struct sock *sk)
{
struct sk_buff *skb;
struct udphdr *uh;
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct flowi6 *fl6 = &inet->cork.fl.u.ip6;
int err = 0;
int is_udplite = IS_UDPLITE(sk);
__wsum csum = 0;
/* Grab the skbuff where UDP header space exists. */
if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
goto out;
/*
* Create a UDP header
*/
uh = udp_hdr(skb);
uh->source = fl6->fl6_sport;
uh->dest = fl6->fl6_dport;
uh->len = htons(up->len);
uh->check = 0;
if (is_udplite)
csum = udplite_csum_outgoing(sk, skb);
else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */
udp6_hwcsum_outgoing(sk, skb, &fl6->saddr, &fl6->daddr,
up->len);
goto send;
} else
csum = udp_csum_outgoing(sk, skb);
/* add protocol-dependent pseudo-header */
uh->check = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,
up->len, fl6->flowi6_proto, csum);
if (uh->check == 0)
uh->check = CSUM_MANGLED_0;
send:
err = ip6_push_pending_frames(sk);
if (err) {
if (err == -ENOBUFS && !inet6_sk(sk)->recverr) {
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_SNDBUFERRORS, is_udplite);
err = 0;
}
} else
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_OUTDATAGRAMS, is_udplite);
out:
up->len = 0;
up->pending = 0;
return err;
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,203 | void udpv6_destroy_sock(struct sock *sk)
{
lock_sock(sk);
udp_v6_flush_pending_frames(sk);
release_sock(sk);
inet6_destroy_sock(sk);
}
| DoS | 0 | void udpv6_destroy_sock(struct sock *sk)
{
lock_sock(sk);
udp_v6_flush_pending_frames(sk);
release_sock(sk);
inet6_destroy_sock(sk);
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,204 | void udpv6_exit(void)
{
inet6_unregister_protosw(&udpv6_protosw);
inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
}
| DoS | 0 | void udpv6_exit(void)
{
inet6_unregister_protosw(&udpv6_protosw);
inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,205 | int udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_getsockopt(sk, level, optname, optval, optlen);
return ipv6_getsockopt(sk, level, optname, optval, optlen);
}
| DoS | 0 | int udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_getsockopt(sk, level, optname, optval, optlen);
return ipv6_getsockopt(sk, level, optname, optval, optlen);
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,206 | int __init udpv6_init(void)
{
int ret;
ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);
if (ret)
goto out;
ret = inet6_register_protosw(&udpv6_protosw);
if (ret)
goto out_udpv6_protocol;
out:
return ret;
out_udpv6_protocol:
inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
goto out;
}
| DoS | 0 | int __init udpv6_init(void)
{
int ret;
ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);
if (ret)
goto out;
ret = inet6_register_protosw(&udpv6_protosw);
if (ret)
goto out_udpv6_protocol;
out:
return ret;
out_udpv6_protocol:
inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
goto out;
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,207 | int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
{
struct udp_sock *up = udp_sk(sk);
int rc;
int is_udplite = IS_UDPLITE(sk);
if (!ipv6_addr_any(&inet6_sk(sk)->daddr))
sock_rps_save_rxhash(sk, skb->rxhash);
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
goto drop;
/*
* UDP-Lite specific tests, ignored on UDP sockets (see net/ipv4/udp.c).
*/
if ((is_udplite & UDPLITE_RECV_CC) && UDP_SKB_CB(skb)->partial_cov) {
if (up->pcrlen == 0) { /* full coverage was set */
LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage"
" %d while full coverage %d requested\n",
UDP_SKB_CB(skb)->cscov, skb->len);
goto drop;
}
if (UDP_SKB_CB(skb)->cscov < up->pcrlen) {
LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d "
"too small, need min %d\n",
UDP_SKB_CB(skb)->cscov, up->pcrlen);
goto drop;
}
}
if (rcu_dereference_raw(sk->sk_filter)) {
if (udp_lib_checksum_complete(skb))
goto drop;
}
if ((rc = ip_queue_rcv_skb(sk, skb)) < 0) {
/* Note that an ENOMEM error is charged twice */
if (rc == -ENOMEM)
UDP6_INC_STATS_BH(sock_net(sk),
UDP_MIB_RCVBUFERRORS, is_udplite);
goto drop_no_sk_drops_inc;
}
return 0;
drop:
atomic_inc(&sk->sk_drops);
drop_no_sk_drops_inc:
UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
kfree_skb(skb);
return -1;
}
| DoS | 0 | int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
{
struct udp_sock *up = udp_sk(sk);
int rc;
int is_udplite = IS_UDPLITE(sk);
if (!ipv6_addr_any(&inet6_sk(sk)->daddr))
sock_rps_save_rxhash(sk, skb->rxhash);
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
goto drop;
/*
* UDP-Lite specific tests, ignored on UDP sockets (see net/ipv4/udp.c).
*/
if ((is_udplite & UDPLITE_RECV_CC) && UDP_SKB_CB(skb)->partial_cov) {
if (up->pcrlen == 0) { /* full coverage was set */
LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage"
" %d while full coverage %d requested\n",
UDP_SKB_CB(skb)->cscov, skb->len);
goto drop;
}
if (UDP_SKB_CB(skb)->cscov < up->pcrlen) {
LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d "
"too small, need min %d\n",
UDP_SKB_CB(skb)->cscov, up->pcrlen);
goto drop;
}
}
if (rcu_dereference_raw(sk->sk_filter)) {
if (udp_lib_checksum_complete(skb))
goto drop;
}
if ((rc = ip_queue_rcv_skb(sk, skb)) < 0) {
/* Note that an ENOMEM error is charged twice */
if (rc == -ENOMEM)
UDP6_INC_STATS_BH(sock_net(sk),
UDP_MIB_RCVBUFERRORS, is_udplite);
goto drop_no_sk_drops_inc;
}
return 0;
drop:
atomic_inc(&sk->sk_drops);
drop_no_sk_drops_inc:
UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
kfree_skb(skb);
return -1;
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,208 | static __inline__ int udpv6_rcv(struct sk_buff *skb)
{
return __udp6_lib_rcv(skb, &udp_table, IPPROTO_UDP);
}
| DoS | 0 | static __inline__ int udpv6_rcv(struct sk_buff *skb)
{
return __udp6_lib_rcv(skb, &udp_table, IPPROTO_UDP);
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,209 | int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len,
int noblock, int flags, int *addr_len)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct sk_buff *skb;
unsigned int ulen;
int peeked;
int err;
int is_udplite = IS_UDPLITE(sk);
int is_udp4;
bool slow;
if (addr_len)
*addr_len=sizeof(struct sockaddr_in6);
if (flags & MSG_ERRQUEUE)
return ipv6_recv_error(sk, msg, len);
if (np->rxpmtu && np->rxopt.bits.rxpmtu)
return ipv6_recv_rxpmtu(sk, msg, len);
try_again:
skb = __skb_recv_datagram(sk, flags | (noblock ? MSG_DONTWAIT : 0),
&peeked, &err);
if (!skb)
goto out;
ulen = skb->len - sizeof(struct udphdr);
if (len > ulen)
len = ulen;
else if (len < ulen)
msg->msg_flags |= MSG_TRUNC;
is_udp4 = (skb->protocol == htons(ETH_P_IP));
/*
* If checksum is needed at all, try to do it while copying the
* data. If the data is truncated, or if we only want a partial
* coverage checksum (UDP-Lite), do it before the copy.
*/
if (len < ulen || UDP_SKB_CB(skb)->partial_cov) {
if (udp_lib_checksum_complete(skb))
goto csum_copy_err;
}
if (skb_csum_unnecessary(skb))
err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
msg->msg_iov,len);
else {
err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov);
if (err == -EINVAL)
goto csum_copy_err;
}
if (err)
goto out_free;
if (!peeked) {
if (is_udp4)
UDP_INC_STATS_USER(sock_net(sk),
UDP_MIB_INDATAGRAMS, is_udplite);
else
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_INDATAGRAMS, is_udplite);
}
sock_recv_ts_and_drops(msg, sk, skb);
/* Copy the address. */
if (msg->msg_name) {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *) msg->msg_name;
sin6->sin6_family = AF_INET6;
sin6->sin6_port = udp_hdr(skb)->source;
sin6->sin6_flowinfo = 0;
sin6->sin6_scope_id = 0;
if (is_udp4)
ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr,
&sin6->sin6_addr);
else {
ipv6_addr_copy(&sin6->sin6_addr,
&ipv6_hdr(skb)->saddr);
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
sin6->sin6_scope_id = IP6CB(skb)->iif;
}
}
if (is_udp4) {
if (inet->cmsg_flags)
ip_cmsg_recv(msg, skb);
} else {
if (np->rxopt.all)
datagram_recv_ctl(sk, msg, skb);
}
err = len;
if (flags & MSG_TRUNC)
err = ulen;
out_free:
skb_free_datagram_locked(sk, skb);
out:
return err;
csum_copy_err:
slow = lock_sock_fast(sk);
if (!skb_kill_datagram(sk, skb, flags)) {
if (is_udp4)
UDP_INC_STATS_USER(sock_net(sk),
UDP_MIB_INERRORS, is_udplite);
else
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_INERRORS, is_udplite);
}
unlock_sock_fast(sk, slow);
if (flags & MSG_DONTWAIT)
return -EAGAIN;
goto try_again;
}
| DoS | 0 | int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len,
int noblock, int flags, int *addr_len)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct sk_buff *skb;
unsigned int ulen;
int peeked;
int err;
int is_udplite = IS_UDPLITE(sk);
int is_udp4;
bool slow;
if (addr_len)
*addr_len=sizeof(struct sockaddr_in6);
if (flags & MSG_ERRQUEUE)
return ipv6_recv_error(sk, msg, len);
if (np->rxpmtu && np->rxopt.bits.rxpmtu)
return ipv6_recv_rxpmtu(sk, msg, len);
try_again:
skb = __skb_recv_datagram(sk, flags | (noblock ? MSG_DONTWAIT : 0),
&peeked, &err);
if (!skb)
goto out;
ulen = skb->len - sizeof(struct udphdr);
if (len > ulen)
len = ulen;
else if (len < ulen)
msg->msg_flags |= MSG_TRUNC;
is_udp4 = (skb->protocol == htons(ETH_P_IP));
/*
* If checksum is needed at all, try to do it while copying the
* data. If the data is truncated, or if we only want a partial
* coverage checksum (UDP-Lite), do it before the copy.
*/
if (len < ulen || UDP_SKB_CB(skb)->partial_cov) {
if (udp_lib_checksum_complete(skb))
goto csum_copy_err;
}
if (skb_csum_unnecessary(skb))
err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
msg->msg_iov,len);
else {
err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov);
if (err == -EINVAL)
goto csum_copy_err;
}
if (err)
goto out_free;
if (!peeked) {
if (is_udp4)
UDP_INC_STATS_USER(sock_net(sk),
UDP_MIB_INDATAGRAMS, is_udplite);
else
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_INDATAGRAMS, is_udplite);
}
sock_recv_ts_and_drops(msg, sk, skb);
/* Copy the address. */
if (msg->msg_name) {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *) msg->msg_name;
sin6->sin6_family = AF_INET6;
sin6->sin6_port = udp_hdr(skb)->source;
sin6->sin6_flowinfo = 0;
sin6->sin6_scope_id = 0;
if (is_udp4)
ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr,
&sin6->sin6_addr);
else {
ipv6_addr_copy(&sin6->sin6_addr,
&ipv6_hdr(skb)->saddr);
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
sin6->sin6_scope_id = IP6CB(skb)->iif;
}
}
if (is_udp4) {
if (inet->cmsg_flags)
ip_cmsg_recv(msg, skb);
} else {
if (np->rxopt.all)
datagram_recv_ctl(sk, msg, skb);
}
err = len;
if (flags & MSG_TRUNC)
err = ulen;
out_free:
skb_free_datagram_locked(sk, skb);
out:
return err;
csum_copy_err:
slow = lock_sock_fast(sk);
if (!skb_kill_datagram(sk, skb, flags)) {
if (is_udp4)
UDP_INC_STATS_USER(sock_net(sk),
UDP_MIB_INERRORS, is_udplite);
else
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_INERRORS, is_udplite);
}
unlock_sock_fast(sk, slow);
if (flags & MSG_DONTWAIT)
return -EAGAIN;
goto try_again;
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,210 | int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) msg->msg_name;
struct in6_addr *daddr, *final_p, final;
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_len = msg->msg_namelen;
int ulen = len;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
int connected = 0;
int is_udplite = IS_UDPLITE(sk);
int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
/* destination address check */
if (sin6) {
if (addr_len < offsetof(struct sockaddr, sa_data))
return -EINVAL;
switch (sin6->sin6_family) {
case AF_INET6:
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
daddr = &sin6->sin6_addr;
break;
case AF_INET:
goto do_udp_sendmsg;
case AF_UNSPEC:
msg->msg_name = sin6 = NULL;
msg->msg_namelen = addr_len = 0;
daddr = NULL;
break;
default:
return -EINVAL;
}
} else if (!up->pending) {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
daddr = &np->daddr;
} else
daddr = NULL;
if (daddr) {
if (ipv6_addr_v4mapped(daddr)) {
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = sin6 ? sin6->sin6_port : inet->inet_dport;
sin.sin_addr.s_addr = daddr->s6_addr32[3];
msg->msg_name = &sin;
msg->msg_namelen = sizeof(sin);
do_udp_sendmsg:
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
return udp_sendmsg(iocb, sk, msg, len);
}
}
if (up->pending == AF_INET)
return udp_sendmsg(iocb, sk, msg, len);
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX - sizeof(struct udphdr))
return -EMSGSIZE;
if (up->pending) {
/*
* There are pending frames.
* The socket lock must be held while it's corked.
*/
lock_sock(sk);
if (likely(up->pending)) {
if (unlikely(up->pending != AF_INET6)) {
release_sock(sk);
return -EAFNOSUPPORT;
}
dst = NULL;
goto do_append_data;
}
release_sock(sk);
}
ulen += sizeof(struct udphdr);
memset(&fl6, 0, sizeof(fl6));
if (sin6) {
if (sin6->sin6_port == 0)
return -EINVAL;
fl6.fl6_dport = sin6->sin6_port;
daddr = &sin6->sin6_addr;
if (np->sndflow) {
fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
daddr = &flowlabel->dst;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &np->daddr))
daddr = &np->daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
fl6.flowi6_oif = sin6->sin6_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
fl6.fl6_dport = inet->inet_dport;
daddr = &np->daddr;
fl6.flowlabel = np->flow_label;
connected = 1;
}
if (!fl6.flowi6_oif)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
fl6.flowi6_mark = sk->sk_mark;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
err = datagram_send_ctl(sock_net(sk), msg, &fl6, opt, &hlimit,
&tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
connected = 0;
}
if (opt == NULL)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
ipv6_addr_copy(&fl6.daddr, daddr);
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
ipv6_addr_copy(&fl6.saddr, &np->saddr);
fl6.fl6_sport = inet->inet_sport;
final_p = fl6_update_dst(&fl6, opt, &final);
if (final_p)
connected = 0;
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) {
fl6.flowi6_oif = np->mcast_oif;
connected = 0;
}
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_sk_dst_lookup_flow(sk, &fl6, final_p, true);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto out;
}
if (hlimit < 0) {
if (ipv6_addr_is_multicast(&fl6.daddr))
hlimit = np->mcast_hops;
else
hlimit = np->hop_limit;
if (hlimit < 0)
hlimit = ip6_dst_hoplimit(dst);
}
if (tclass < 0)
tclass = np->tclass;
if (dontfrag < 0)
dontfrag = np->dontfrag;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
lock_sock(sk);
if (unlikely(up->pending)) {
/* The socket is already corked while preparing it. */
/* ... which is an evident application bug. --ANK */
release_sock(sk);
LIMIT_NETDEBUG(KERN_DEBUG "udp cork app bug 2\n");
err = -EINVAL;
goto out;
}
up->pending = AF_INET6;
do_append_data:
up->len += ulen;
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen,
sizeof(struct udphdr), hlimit, tclass, opt, &fl6,
(struct rt6_info*)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags, dontfrag);
if (err)
udp_v6_flush_pending_frames(sk);
else if (!corkreq)
err = udp_v6_push_pending_frames(sk);
else if (unlikely(skb_queue_empty(&sk->sk_write_queue)))
up->pending = 0;
if (dst) {
if (connected) {
ip6_dst_store(sk, dst,
ipv6_addr_equal(&fl6.daddr, &np->daddr) ?
&np->daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
#endif
NULL);
} else {
dst_release(dst);
}
dst = NULL;
}
if (err > 0)
err = np->recverr ? net_xmit_errno(err) : 0;
release_sock(sk);
out:
dst_release(dst);
fl6_sock_release(flowlabel);
if (!err)
return len;
/*
* ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting
* ENOBUFS might not be good (it's not tunable per se), but otherwise
* we don't have a good statistic (IpOutDiscards but it can be too many
* things). We could add another new stat but at least for now that
* seems like overkill.
*/
if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_SNDBUFERRORS, is_udplite);
}
return err;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags&MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto out;
}
| DoS | 0 | int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) msg->msg_name;
struct in6_addr *daddr, *final_p, final;
struct ipv6_txoptions *opt = NULL;
struct ip6_flowlabel *flowlabel = NULL;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_len = msg->msg_namelen;
int ulen = len;
int hlimit = -1;
int tclass = -1;
int dontfrag = -1;
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
int connected = 0;
int is_udplite = IS_UDPLITE(sk);
int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
/* destination address check */
if (sin6) {
if (addr_len < offsetof(struct sockaddr, sa_data))
return -EINVAL;
switch (sin6->sin6_family) {
case AF_INET6:
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
daddr = &sin6->sin6_addr;
break;
case AF_INET:
goto do_udp_sendmsg;
case AF_UNSPEC:
msg->msg_name = sin6 = NULL;
msg->msg_namelen = addr_len = 0;
daddr = NULL;
break;
default:
return -EINVAL;
}
} else if (!up->pending) {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
daddr = &np->daddr;
} else
daddr = NULL;
if (daddr) {
if (ipv6_addr_v4mapped(daddr)) {
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = sin6 ? sin6->sin6_port : inet->inet_dport;
sin.sin_addr.s_addr = daddr->s6_addr32[3];
msg->msg_name = &sin;
msg->msg_namelen = sizeof(sin);
do_udp_sendmsg:
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
return udp_sendmsg(iocb, sk, msg, len);
}
}
if (up->pending == AF_INET)
return udp_sendmsg(iocb, sk, msg, len);
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
if (len > INT_MAX - sizeof(struct udphdr))
return -EMSGSIZE;
if (up->pending) {
/*
* There are pending frames.
* The socket lock must be held while it's corked.
*/
lock_sock(sk);
if (likely(up->pending)) {
if (unlikely(up->pending != AF_INET6)) {
release_sock(sk);
return -EAFNOSUPPORT;
}
dst = NULL;
goto do_append_data;
}
release_sock(sk);
}
ulen += sizeof(struct udphdr);
memset(&fl6, 0, sizeof(fl6));
if (sin6) {
if (sin6->sin6_port == 0)
return -EINVAL;
fl6.fl6_dport = sin6->sin6_port;
daddr = &sin6->sin6_addr;
if (np->sndflow) {
fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
daddr = &flowlabel->dst;
}
}
/*
* Otherwise it will be difficult to maintain
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
ipv6_addr_equal(daddr, &np->daddr))
daddr = &np->daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
fl6.flowi6_oif = sin6->sin6_scope_id;
} else {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
fl6.fl6_dport = inet->inet_dport;
daddr = &np->daddr;
fl6.flowlabel = np->flow_label;
connected = 1;
}
if (!fl6.flowi6_oif)
fl6.flowi6_oif = sk->sk_bound_dev_if;
if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
fl6.flowi6_mark = sk->sk_mark;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
err = datagram_send_ctl(sock_net(sk), msg, &fl6, opt, &hlimit,
&tclass, &dontfrag);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
}
if (!(opt->opt_nflen|opt->opt_flen))
opt = NULL;
connected = 0;
}
if (opt == NULL)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
ipv6_addr_copy(&fl6.daddr, daddr);
else
fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))
ipv6_addr_copy(&fl6.saddr, &np->saddr);
fl6.fl6_sport = inet->inet_sport;
final_p = fl6_update_dst(&fl6, opt, &final);
if (final_p)
connected = 0;
if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) {
fl6.flowi6_oif = np->mcast_oif;
connected = 0;
}
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_sk_dst_lookup_flow(sk, &fl6, final_p, true);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto out;
}
if (hlimit < 0) {
if (ipv6_addr_is_multicast(&fl6.daddr))
hlimit = np->mcast_hops;
else
hlimit = np->hop_limit;
if (hlimit < 0)
hlimit = ip6_dst_hoplimit(dst);
}
if (tclass < 0)
tclass = np->tclass;
if (dontfrag < 0)
dontfrag = np->dontfrag;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
lock_sock(sk);
if (unlikely(up->pending)) {
/* The socket is already corked while preparing it. */
/* ... which is an evident application bug. --ANK */
release_sock(sk);
LIMIT_NETDEBUG(KERN_DEBUG "udp cork app bug 2\n");
err = -EINVAL;
goto out;
}
up->pending = AF_INET6;
do_append_data:
up->len += ulen;
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen,
sizeof(struct udphdr), hlimit, tclass, opt, &fl6,
(struct rt6_info*)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags, dontfrag);
if (err)
udp_v6_flush_pending_frames(sk);
else if (!corkreq)
err = udp_v6_push_pending_frames(sk);
else if (unlikely(skb_queue_empty(&sk->sk_write_queue)))
up->pending = 0;
if (dst) {
if (connected) {
ip6_dst_store(sk, dst,
ipv6_addr_equal(&fl6.daddr, &np->daddr) ?
&np->daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
#endif
NULL);
} else {
dst_release(dst);
}
dst = NULL;
}
if (err > 0)
err = np->recverr ? net_xmit_errno(err) : 0;
release_sock(sk);
out:
dst_release(dst);
fl6_sock_release(flowlabel);
if (!err)
return len;
/*
* ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting
* ENOBUFS might not be good (it's not tunable per se), but otherwise
* we don't have a good statistic (IpOutDiscards but it can be too many
* things). We could add another new stat but at least for now that
* seems like overkill.
*/
if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
UDP6_INC_STATS_USER(sock_net(sk),
UDP_MIB_SNDBUFERRORS, is_udplite);
}
return err;
do_confirm:
dst_confirm(dst);
if (!(msg->msg_flags&MSG_PROBE) || len)
goto back_from_confirm;
err = 0;
goto out;
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,211 | int udpv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, unsigned int optlen)
{
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_setsockopt(sk, level, optname, optval, optlen,
udp_v6_push_pending_frames);
return ipv6_setsockopt(sk, level, optname, optval, optlen);
}
| DoS | 0 | int udpv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, unsigned int optlen)
{
if (level == SOL_UDP || level == SOL_UDPLITE)
return udp_lib_setsockopt(sk, level, optname, optval, optlen,
udp_v6_push_pending_frames);
return ipv6_setsockopt(sk, level, optname, optval, optlen);
}
| @@ -1335,7 +1335,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_headroom(skb) < frag_hdr_sz) &&
+ if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
goto out;
| CWE-399 | null | null |
18,212 | static void __put_nfs_open_context(struct nfs_open_context *ctx, int wait)
{
struct inode *inode;
if (ctx == NULL)
return;
inode = ctx->path.dentry->d_inode;
if (!atomic_dec_and_lock(&ctx->count, &inode->i_lock))
return;
list_del(&ctx->list);
spin_unlock(&inode->i_lock);
if (ctx->state != NULL) {
if (wait)
nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
else
nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
}
if (ctx->cred != NULL)
put_rpccred(ctx->cred);
path_put(&ctx->path);
kfree(ctx);
}
| DoS | 0 | static void __put_nfs_open_context(struct nfs_open_context *ctx, int wait)
{
struct inode *inode;
if (ctx == NULL)
return;
inode = ctx->path.dentry->d_inode;
if (!atomic_dec_and_lock(&ctx->count, &inode->i_lock))
return;
list_del(&ctx->list);
spin_unlock(&inode->i_lock);
if (ctx->state != NULL) {
if (wait)
nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
else
nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
}
if (ctx->cred != NULL)
put_rpccred(ctx->cred);
path_put(&ctx->path);
kfree(ctx);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,213 | static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, struct dentry *dentry, struct rpc_cred *cred)
{
struct nfs_open_context *ctx;
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx != NULL) {
ctx->path.dentry = dget(dentry);
ctx->path.mnt = mntget(mnt);
ctx->cred = get_rpccred(cred);
ctx->state = NULL;
ctx->lockowner = current->files;
ctx->flags = 0;
ctx->error = 0;
ctx->dir_cookie = 0;
atomic_set(&ctx->count, 1);
}
return ctx;
}
| DoS | 0 | static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, struct dentry *dentry, struct rpc_cred *cred)
{
struct nfs_open_context *ctx;
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx != NULL) {
ctx->path.dentry = dget(dentry);
ctx->path.mnt = mntget(mnt);
ctx->cred = get_rpccred(cred);
ctx->state = NULL;
ctx->lockowner = current->files;
ctx->flags = 0;
ctx->error = 0;
ctx->dir_cookie = 0;
atomic_set(&ctx->count, 1);
}
return ctx;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,214 | static void __exit exit_nfs_fs(void)
{
nfs_destroy_directcache();
nfs_destroy_writepagecache();
nfs_destroy_readpagecache();
nfs_destroy_inodecache();
nfs_destroy_nfspagecache();
#ifdef CONFIG_PROC_FS
rpc_proc_unregister("nfs");
#endif
unregister_nfs_fs();
nfs_fs_proc_exit();
nfsiod_stop();
}
| DoS | 0 | static void __exit exit_nfs_fs(void)
{
nfs_destroy_directcache();
nfs_destroy_writepagecache();
nfs_destroy_readpagecache();
nfs_destroy_inodecache();
nfs_destroy_nfspagecache();
#ifdef CONFIG_PROC_FS
rpc_proc_unregister("nfs");
#endif
unregister_nfs_fs();
nfs_fs_proc_exit();
nfsiod_stop();
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,215 | struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx)
{
if (ctx != NULL)
atomic_inc(&ctx->count);
return ctx;
}
| DoS | 0 | struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx)
{
if (ctx != NULL)
atomic_inc(&ctx->count);
return ctx;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,216 | void nfs4_clear_inode(struct inode *inode)
{
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation_noreclaim(inode);
/* First call standard NFS clear_inode() code */
nfs_clear_inode(inode);
}
| DoS | 0 | void nfs4_clear_inode(struct inode *inode)
{
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation_noreclaim(inode);
/* First call standard NFS clear_inode() code */
nfs_clear_inode(inode);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,217 | struct inode *nfs_alloc_inode(struct super_block *sb)
{
struct nfs_inode *nfsi;
nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, GFP_KERNEL);
if (!nfsi)
return NULL;
nfsi->flags = 0UL;
nfsi->cache_validity = 0UL;
#ifdef CONFIG_NFS_V3_ACL
nfsi->acl_access = ERR_PTR(-EAGAIN);
nfsi->acl_default = ERR_PTR(-EAGAIN);
#endif
#ifdef CONFIG_NFS_V4
nfsi->nfs4_acl = NULL;
#endif /* CONFIG_NFS_V4 */
return &nfsi->vfs_inode;
}
| DoS | 0 | struct inode *nfs_alloc_inode(struct super_block *sb)
{
struct nfs_inode *nfsi;
nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, GFP_KERNEL);
if (!nfsi)
return NULL;
nfsi->flags = 0UL;
nfsi->cache_validity = 0UL;
#ifdef CONFIG_NFS_V3_ACL
nfsi->acl_access = ERR_PTR(-EAGAIN);
nfsi->acl_default = ERR_PTR(-EAGAIN);
#endif
#ifdef CONFIG_NFS_V4
nfsi->nfs4_acl = NULL;
#endif /* CONFIG_NFS_V4 */
return &nfsi->vfs_inode;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,218 | int nfs_attribute_timeout(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
if (nfs_have_delegation(inode, FMODE_READ))
return 0;
/*
* Special case: if the attribute timeout is set to 0, then always
* treat the cache as having expired (unless holding
* a delegation).
*/
if (nfsi->attrtimeo == 0)
return 1;
return !time_in_range(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
}
| DoS | 0 | int nfs_attribute_timeout(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
if (nfs_have_delegation(inode, FMODE_READ))
return 0;
/*
* Special case: if the attribute timeout is set to 0, then always
* treat the cache as having expired (unless holding
* a delegation).
*/
if (nfsi->attrtimeo == 0)
return 1;
return !time_in_range(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,219 | static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_size, new_isize;
unsigned long invalid = 0;
/* Has the inode gone and changed behind our back? */
if (nfsi->fileid != fattr->fileid
|| (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
return -EIO;
}
if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
nfsi->change_attr != fattr->change_attr)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Verify a few of the more important attributes */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime))
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
if (cur_size != new_isize && nfsi->npages == 0)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Have any file permissions changed? */
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
|| inode->i_uid != fattr->uid
|| inode->i_gid != fattr->gid)
invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
/* Has the link count changed? */
if (inode->i_nlink != fattr->nlink)
invalid |= NFS_INO_INVALID_ATTR;
if (!timespec_equal(&inode->i_atime, &fattr->atime))
invalid |= NFS_INO_INVALID_ATIME;
if (invalid != 0)
nfsi->cache_validity |= invalid;
nfsi->read_cache_jiffies = fattr->time_start;
return 0;
}
| DoS | 0 | static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_size, new_isize;
unsigned long invalid = 0;
/* Has the inode gone and changed behind our back? */
if (nfsi->fileid != fattr->fileid
|| (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
return -EIO;
}
if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
nfsi->change_attr != fattr->change_attr)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Verify a few of the more important attributes */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime))
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
if (cur_size != new_isize && nfsi->npages == 0)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Have any file permissions changed? */
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
|| inode->i_uid != fattr->uid
|| inode->i_gid != fattr->gid)
invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
/* Has the link count changed? */
if (inode->i_nlink != fattr->nlink)
invalid |= NFS_INO_INVALID_ATTR;
if (!timespec_equal(&inode->i_atime, &fattr->atime))
invalid |= NFS_INO_INVALID_ATIME;
if (invalid != 0)
nfsi->cache_validity |= invalid;
nfsi->read_cache_jiffies = fattr->time_start;
return 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,220 | static int nfs_ctime_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
{
return timespec_compare(&fattr->ctime, &inode->i_ctime) > 0;
}
| DoS | 0 | static int nfs_ctime_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
{
return timespec_compare(&fattr->ctime, &inode->i_ctime) > 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,221 | static void nfs_destroy_inodecache(void)
{
kmem_cache_destroy(nfs_inode_cachep);
}
| DoS | 0 | static void nfs_destroy_inodecache(void)
{
kmem_cache_destroy(nfs_inode_cachep);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,222 | void nfs_fattr_init(struct nfs_fattr *fattr)
{
fattr->valid = 0;
fattr->time_start = jiffies;
fattr->gencount = nfs_inc_attr_generation_counter();
}
| DoS | 0 | void nfs_fattr_init(struct nfs_fattr *fattr)
{
fattr->valid = 0;
fattr->time_start = jiffies;
fattr->gencount = nfs_inc_attr_generation_counter();
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,223 | static void nfs_file_clear_open_context(struct file *filp)
{
struct inode *inode = filp->f_path.dentry->d_inode;
struct nfs_open_context *ctx = nfs_file_open_context(filp);
if (ctx) {
filp->private_data = NULL;
spin_lock(&inode->i_lock);
list_move_tail(&ctx->list, &NFS_I(inode)->open_files);
spin_unlock(&inode->i_lock);
put_nfs_open_context_sync(ctx);
}
}
| DoS | 0 | static void nfs_file_clear_open_context(struct file *filp)
{
struct inode *inode = filp->f_path.dentry->d_inode;
struct nfs_open_context *ctx = nfs_file_open_context(filp);
if (ctx) {
filp->private_data = NULL;
spin_lock(&inode->i_lock);
list_move_tail(&ctx->list, &NFS_I(inode)->open_files);
spin_unlock(&inode->i_lock);
put_nfs_open_context_sync(ctx);
}
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,224 | nfs_find_actor(struct inode *inode, void *opaque)
{
struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque;
struct nfs_fh *fh = desc->fh;
struct nfs_fattr *fattr = desc->fattr;
if (NFS_FILEID(inode) != fattr->fileid)
return 0;
if (nfs_compare_fh(NFS_FH(inode), fh))
return 0;
if (is_bad_inode(inode) || NFS_STALE(inode))
return 0;
return 1;
}
| DoS | 0 | nfs_find_actor(struct inode *inode, void *opaque)
{
struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque;
struct nfs_fh *fh = desc->fh;
struct nfs_fattr *fattr = desc->fattr;
if (NFS_FILEID(inode) != fattr->fileid)
return 0;
if (nfs_compare_fh(NFS_FH(inode), fh))
return 0;
if (is_bad_inode(inode) || NFS_STALE(inode))
return 0;
return 1;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,225 | int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
struct inode *inode = dentry->d_inode;
int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
int err;
/*
* Flush out writes to the server in order to update c/mtime.
*
* Hold the i_mutex to suspend application writes temporarily;
* this prevents long-running writing applications from blocking
* nfs_wb_nocommit.
*/
if (S_ISREG(inode->i_mode)) {
mutex_lock(&inode->i_mutex);
nfs_wb_nocommit(inode);
mutex_unlock(&inode->i_mutex);
}
/*
* We may force a getattr if the user cares about atime.
*
* Note that we only have to check the vfsmount flags here:
* - NFS always sets S_NOATIME by so checking it would give a
* bogus result
* - NFS never sets MS_NOATIME or MS_NODIRATIME so there is
* no point in checking those.
*/
if ((mnt->mnt_flags & MNT_NOATIME) ||
((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
need_atime = 0;
if (need_atime)
err = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
else
err = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (!err) {
generic_fillattr(inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
}
return err;
}
| DoS | 0 | int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
struct inode *inode = dentry->d_inode;
int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
int err;
/*
* Flush out writes to the server in order to update c/mtime.
*
* Hold the i_mutex to suspend application writes temporarily;
* this prevents long-running writing applications from blocking
* nfs_wb_nocommit.
*/
if (S_ISREG(inode->i_mode)) {
mutex_lock(&inode->i_mutex);
nfs_wb_nocommit(inode);
mutex_unlock(&inode->i_mutex);
}
/*
* We may force a getattr if the user cares about atime.
*
* Note that we only have to check the vfsmount flags here:
* - NFS always sets S_NOATIME by so checking it would give a
* bogus result
* - NFS never sets MS_NOATIME or MS_NODIRATIME so there is
* no point in checking those.
*/
if ((mnt->mnt_flags & MNT_NOATIME) ||
((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
need_atime = 0;
if (need_atime)
err = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
else
err = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (!err) {
generic_fillattr(inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
}
return err;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,226 | unsigned long nfs_inc_attr_generation_counter(void)
{
return atomic_long_inc_return(&nfs_attr_generation_counter);
}
| DoS | 0 | unsigned long nfs_inc_attr_generation_counter(void)
{
return atomic_long_inc_return(&nfs_attr_generation_counter);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,227 | static int __init nfs_init_inodecache(void)
{
nfs_inode_cachep = kmem_cache_create("nfs_inode_cache",
sizeof(struct nfs_inode),
0, (SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD),
init_once);
if (nfs_inode_cachep == NULL)
return -ENOMEM;
return 0;
}
| DoS | 0 | static int __init nfs_init_inodecache(void)
{
nfs_inode_cachep = kmem_cache_create("nfs_inode_cache",
sizeof(struct nfs_inode),
0, (SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD),
init_once);
if (nfs_inode_cachep == NULL)
return -ENOMEM;
return 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,228 | nfs_init_locked(struct inode *inode, void *opaque)
{
struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque;
struct nfs_fattr *fattr = desc->fattr;
set_nfs_fileid(inode, fattr->fileid);
nfs_copy_fh(NFS_FH(inode), desc->fh);
return 0;
}
| DoS | 0 | nfs_init_locked(struct inode *inode, void *opaque)
{
struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque;
struct nfs_fattr *fattr = desc->fattr;
set_nfs_fileid(inode, fattr->fileid);
nfs_copy_fh(NFS_FH(inode), desc->fh);
return 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,229 | static int nfs_inode_attrs_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
{
const struct nfs_inode *nfsi = NFS_I(inode);
return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 ||
nfs_ctime_need_update(inode, fattr) ||
nfs_size_need_update(inode, fattr) ||
((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0);
}
| DoS | 0 | static int nfs_inode_attrs_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
{
const struct nfs_inode *nfsi = NFS_I(inode);
return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 ||
nfs_ctime_need_update(inode, fattr) ||
nfs_size_need_update(inode, fattr) ||
((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,230 | static void nfs_invalidate_inode(struct inode *inode)
{
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
nfs_zap_caches_locked(inode);
}
| DoS | 0 | static void nfs_invalidate_inode(struct inode *inode)
{
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
nfs_zap_caches_locked(inode);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,231 | static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
{
int ret = 0;
mutex_lock(&inode->i_mutex);
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_DATA) {
ret = nfs_sync_mapping(mapping);
if (ret == 0)
ret = nfs_invalidate_mapping_nolock(inode, mapping);
}
mutex_unlock(&inode->i_mutex);
return ret;
}
| DoS | 0 | static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
{
int ret = 0;
mutex_lock(&inode->i_mutex);
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_DATA) {
ret = nfs_sync_mapping(mapping);
if (ret == 0)
ret = nfs_invalidate_mapping_nolock(inode, mapping);
}
mutex_unlock(&inode->i_mutex);
return ret;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,232 | static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
if (mapping->nrpages != 0) {
int ret = invalidate_inode_pages2(mapping);
if (ret < 0)
return ret;
}
spin_lock(&inode->i_lock);
nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
if (S_ISDIR(inode->i_mode))
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
spin_unlock(&inode->i_lock);
nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE);
dfprintk(PAGECACHE, "NFS: (%s/%Ld) data cache invalidated\n",
inode->i_sb->s_id, (long long)NFS_FILEID(inode));
return 0;
}
| DoS | 0 | static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
if (mapping->nrpages != 0) {
int ret = invalidate_inode_pages2(mapping);
if (ret < 0)
return ret;
}
spin_lock(&inode->i_lock);
nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
if (S_ISDIR(inode->i_mode))
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
spin_unlock(&inode->i_lock);
nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE);
dfprintk(PAGECACHE, "NFS: (%s/%Ld) data cache invalidated\n",
inode->i_sb->s_id, (long long)NFS_FILEID(inode));
return 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,233 | int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
int status;
spin_lock(&inode->i_lock);
status = nfs_post_op_update_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
return status;
}
| DoS | 0 | int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
int status;
spin_lock(&inode->i_lock);
status = nfs_post_op_update_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
return status;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,234 | int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr)
{
int status;
spin_lock(&inode->i_lock);
/* Don't do a WCC update if these attributes are already stale */
if ((fattr->valid & NFS_ATTR_FATTR) == 0 ||
!nfs_inode_attrs_need_update(inode, fattr)) {
fattr->valid &= ~(NFS_ATTR_WCC_V4|NFS_ATTR_WCC);
goto out_noforce;
}
if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
(fattr->valid & NFS_ATTR_WCC_V4) == 0) {
fattr->pre_change_attr = NFS_I(inode)->change_attr;
fattr->valid |= NFS_ATTR_WCC_V4;
}
if ((fattr->valid & NFS_ATTR_FATTR) != 0 &&
(fattr->valid & NFS_ATTR_WCC) == 0) {
memcpy(&fattr->pre_ctime, &inode->i_ctime, sizeof(fattr->pre_ctime));
memcpy(&fattr->pre_mtime, &inode->i_mtime, sizeof(fattr->pre_mtime));
fattr->pre_size = i_size_read(inode);
fattr->valid |= NFS_ATTR_WCC;
}
out_noforce:
status = nfs_post_op_update_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
return status;
}
| DoS | 0 | int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr)
{
int status;
spin_lock(&inode->i_lock);
/* Don't do a WCC update if these attributes are already stale */
if ((fattr->valid & NFS_ATTR_FATTR) == 0 ||
!nfs_inode_attrs_need_update(inode, fattr)) {
fattr->valid &= ~(NFS_ATTR_WCC_V4|NFS_ATTR_WCC);
goto out_noforce;
}
if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
(fattr->valid & NFS_ATTR_WCC_V4) == 0) {
fattr->pre_change_attr = NFS_I(inode)->change_attr;
fattr->valid |= NFS_ATTR_WCC_V4;
}
if ((fattr->valid & NFS_ATTR_FATTR) != 0 &&
(fattr->valid & NFS_ATTR_WCC) == 0) {
memcpy(&fattr->pre_ctime, &inode->i_ctime, sizeof(fattr->pre_ctime));
memcpy(&fattr->pre_mtime, &inode->i_mtime, sizeof(fattr->pre_mtime));
fattr->pre_size = i_size_read(inode);
fattr->valid |= NFS_ATTR_WCC;
}
out_noforce:
status = nfs_post_op_update_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
return status;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,235 | static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
if (S_ISDIR(inode->i_mode))
nfsi->cache_validity |= NFS_INO_INVALID_DATA;
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
return 0;
return nfs_refresh_inode_locked(inode, fattr);
}
| DoS | 0 | static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
if (S_ISDIR(inode->i_mode))
nfsi->cache_validity |= NFS_INO_INVALID_DATA;
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
return 0;
return nfs_refresh_inode_locked(inode, fattr);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,236 | static unsigned long nfs_read_attr_generation_counter(void)
{
return atomic_long_read(&nfs_attr_generation_counter);
}
| DoS | 0 | static unsigned long nfs_read_attr_generation_counter(void)
{
return atomic_long_read(&nfs_attr_generation_counter);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,237 | int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
{
int status;
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
return 0;
spin_lock(&inode->i_lock);
status = nfs_refresh_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
return status;
}
| DoS | 0 | int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
{
int status;
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
return 0;
spin_lock(&inode->i_lock);
status = nfs_refresh_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
return status;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,238 | static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
if (nfs_inode_attrs_need_update(inode, fattr))
return nfs_update_inode(inode, fattr);
return nfs_check_inode_attributes(inode, fattr);
}
| DoS | 0 | static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
if (nfs_inode_attrs_need_update(inode, fattr))
return nfs_update_inode(inode, fattr);
return nfs_check_inode_attributes(inode, fattr);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,239 | int nfs_release(struct inode *inode, struct file *filp)
{
nfs_file_clear_open_context(filp);
return 0;
}
| DoS | 0 | int nfs_release(struct inode *inode, struct file *filp)
{
nfs_file_clear_open_context(filp);
return 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,240 | int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
&& !nfs_attribute_timeout(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}
| DoS | 0 | int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
&& !nfs_attribute_timeout(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,241 | int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
|| nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;
}
if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
ret = nfs_invalidate_mapping(inode, mapping);
out:
return ret;
}
| DoS | 0 | int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
|| nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;
}
if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
ret = nfs_invalidate_mapping(inode, mapping);
out:
return ret;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,242 | int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
|| nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;
}
if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
ret = nfs_invalidate_mapping_nolock(inode, mapping);
out:
return ret;
}
| DoS | 0 | int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
|| nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;
}
if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
ret = nfs_invalidate_mapping_nolock(inode, mapping);
out:
return ret;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,243 | nfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
struct nfs_fattr fattr;
int error;
nfs_inc_stats(inode, NFSIOS_VFSSETATTR);
/* skip mode change if it's just for clearing setuid/setgid */
if (attr->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
attr->ia_valid &= ~ATTR_MODE;
if (attr->ia_valid & ATTR_SIZE) {
if (!S_ISREG(inode->i_mode) || attr->ia_size == i_size_read(inode))
attr->ia_valid &= ~ATTR_SIZE;
}
/* Optimization: if the end result is no change, don't RPC */
attr->ia_valid &= NFS_VALID_ATTRS;
if ((attr->ia_valid & ~ATTR_FILE) == 0)
return 0;
/* Write all dirty data */
if (S_ISREG(inode->i_mode)) {
filemap_write_and_wait(inode->i_mapping);
nfs_wb_all(inode);
}
/*
* Return any delegations if we're going to change ACLs
*/
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0)
nfs_inode_return_delegation(inode);
error = NFS_PROTO(inode)->setattr(dentry, &fattr, attr);
if (error == 0)
nfs_refresh_inode(inode, &fattr);
return error;
}
| DoS | 0 | nfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
struct nfs_fattr fattr;
int error;
nfs_inc_stats(inode, NFSIOS_VFSSETATTR);
/* skip mode change if it's just for clearing setuid/setgid */
if (attr->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
attr->ia_valid &= ~ATTR_MODE;
if (attr->ia_valid & ATTR_SIZE) {
if (!S_ISREG(inode->i_mode) || attr->ia_size == i_size_read(inode))
attr->ia_valid &= ~ATTR_SIZE;
}
/* Optimization: if the end result is no change, don't RPC */
attr->ia_valid &= NFS_VALID_ATTRS;
if ((attr->ia_valid & ~ATTR_FILE) == 0)
return 0;
/* Write all dirty data */
if (S_ISREG(inode->i_mode)) {
filemap_write_and_wait(inode->i_mapping);
nfs_wb_all(inode);
}
/*
* Return any delegations if we're going to change ACLs
*/
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0)
nfs_inode_return_delegation(inode);
error = NFS_PROTO(inode)->setattr(dentry, &fattr, attr);
if (error == 0)
nfs_refresh_inode(inode, &fattr);
return error;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,244 | void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
{
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) {
spin_lock(&inode->i_lock);
if ((attr->ia_valid & ATTR_MODE) != 0) {
int mode = attr->ia_mode & S_IALLUGO;
mode |= inode->i_mode & ~S_IALLUGO;
inode->i_mode = mode;
}
if ((attr->ia_valid & ATTR_UID) != 0)
inode->i_uid = attr->ia_uid;
if ((attr->ia_valid & ATTR_GID) != 0)
inode->i_gid = attr->ia_gid;
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
spin_unlock(&inode->i_lock);
}
if ((attr->ia_valid & ATTR_SIZE) != 0) {
nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC);
nfs_vmtruncate(inode, attr->ia_size);
}
}
| DoS | 0 | void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
{
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) {
spin_lock(&inode->i_lock);
if ((attr->ia_valid & ATTR_MODE) != 0) {
int mode = attr->ia_mode & S_IALLUGO;
mode |= inode->i_mode & ~S_IALLUGO;
inode->i_mode = mode;
}
if ((attr->ia_valid & ATTR_UID) != 0)
inode->i_uid = attr->ia_uid;
if ((attr->ia_valid & ATTR_GID) != 0)
inode->i_gid = attr->ia_gid;
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
spin_unlock(&inode->i_lock);
}
if ((attr->ia_valid & ATTR_SIZE) != 0) {
nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC);
nfs_vmtruncate(inode, attr->ia_size);
}
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,245 | static int nfs_size_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
{
return nfs_size_to_loff_t(fattr->size) > i_size_read(inode);
}
| DoS | 0 | static int nfs_size_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
{
return nfs_size_to_loff_t(fattr->size) > i_size_read(inode);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,246 | int nfs_sync_mapping(struct address_space *mapping)
{
int ret;
if (mapping->nrpages == 0)
return 0;
unmap_mapping_range(mapping, 0, 0, 0);
ret = filemap_write_and_wait(mapping);
if (ret != 0)
goto out;
ret = nfs_wb_all(mapping->host);
out:
return ret;
}
| DoS | 0 | int nfs_sync_mapping(struct address_space *mapping)
{
int ret;
if (mapping->nrpages == 0)
return 0;
unmap_mapping_range(mapping, 0, 0, 0);
ret = filemap_write_and_wait(mapping);
if (ret != 0)
goto out;
ret = nfs_wb_all(mapping->host);
out:
return ret;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,247 | static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_server *server;
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_isize, new_isize;
unsigned long invalid = 0;
unsigned long now = jiffies;
dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n",
__func__, inode->i_sb->s_id, inode->i_ino,
atomic_read(&inode->i_count), fattr->valid);
if (nfsi->fileid != fattr->fileid)
goto out_fileid;
/*
* Make sure the inode's type hasn't changed.
*/
if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
goto out_changed;
server = NFS_SERVER(inode);
/* Update the fsid? */
if (S_ISDIR(inode->i_mode) &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid) &&
!test_bit(NFS_INO_MOUNTPOINT, &nfsi->flags))
server->fsid = fattr->fsid;
/*
* Update the read time so we don't revalidate too often.
*/
nfsi->read_cache_jiffies = fattr->time_start;
nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ATIME
| NFS_INO_REVAL_PAGECACHE);
/* Do atomic weak cache consistency updates */
nfs_wcc_update_inode(inode, fattr);
/* More cache consistency checks */
if (!(fattr->valid & NFS_ATTR_FATTR_V4)) {
/* NFSv2/v3: Check if the mtime agrees */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
dprintk("NFS: mtime change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
/* If ctime has changed we should definitely clear access+acl caches */
if (!timespec_equal(&inode->i_ctime, &fattr->ctime))
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
} else if (nfsi->change_attr != fattr->change_attr) {
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
/* Check if our cached file size is stale */
new_isize = nfs_size_to_loff_t(fattr->size);
cur_isize = i_size_read(inode);
if (new_isize != cur_isize) {
/* Do we perhaps have any outstanding writes, or has
* the file grown beyond our last write? */
if (nfsi->npages == 0 || new_isize > cur_isize) {
i_size_write(inode, new_isize);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
}
dprintk("NFS: isize change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
}
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
nfsi->change_attr = fattr->change_attr;
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO) ||
inode->i_uid != fattr->uid ||
inode->i_gid != fattr->gid)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
if (inode->i_nlink != fattr->nlink)
invalid |= NFS_INO_INVALID_ATTR;
inode->i_mode = fattr->mode;
inode->i_nlink = fattr->nlink;
inode->i_uid = fattr->uid;
inode->i_gid = fattr->gid;
if (fattr->valid & (NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4)) {
/*
* report the blocks in 512byte units
*/
inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
} else {
inode->i_blocks = fattr->du.nfs2.blocks;
}
/* Update attrtimeo value if we're out of the unstable period */
if (invalid & NFS_INO_INVALID_ATTR) {
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
nfsi->attr_gencount = nfs_inc_attr_generation_counter();
} else {
if (!time_in_range(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode))
nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
}
}
invalid &= ~NFS_INO_INVALID_ATTR;
/* Don't invalidate the data if we were to blame */
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
|| S_ISLNK(inode->i_mode)))
invalid &= ~NFS_INO_INVALID_DATA;
if (!nfs_have_delegation(inode, FMODE_READ) ||
(nfsi->cache_validity & NFS_INO_REVAL_FORCED))
nfsi->cache_validity |= invalid;
nfsi->cache_validity &= ~NFS_INO_REVAL_FORCED;
return 0;
out_changed:
/*
* Big trouble! The inode has become a different object.
*/
printk(KERN_DEBUG "%s: inode %ld mode changed, %07o to %07o\n",
__func__, inode->i_ino, inode->i_mode, fattr->mode);
out_err:
/*
* No need to worry about unhashing the dentry, as the
* lookup validation will know that the inode is bad.
* (But we fall through to invalidate the caches.)
*/
nfs_invalidate_inode(inode);
return -ESTALE;
out_fileid:
printk(KERN_ERR "NFS: server %s error: fileid changed\n"
"fsid %s: expected fileid 0x%Lx, got 0x%Lx\n",
NFS_SERVER(inode)->nfs_client->cl_hostname, inode->i_sb->s_id,
(long long)nfsi->fileid, (long long)fattr->fileid);
goto out_err;
}
| DoS | 0 | static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_server *server;
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_isize, new_isize;
unsigned long invalid = 0;
unsigned long now = jiffies;
dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n",
__func__, inode->i_sb->s_id, inode->i_ino,
atomic_read(&inode->i_count), fattr->valid);
if (nfsi->fileid != fattr->fileid)
goto out_fileid;
/*
* Make sure the inode's type hasn't changed.
*/
if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
goto out_changed;
server = NFS_SERVER(inode);
/* Update the fsid? */
if (S_ISDIR(inode->i_mode) &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid) &&
!test_bit(NFS_INO_MOUNTPOINT, &nfsi->flags))
server->fsid = fattr->fsid;
/*
* Update the read time so we don't revalidate too often.
*/
nfsi->read_cache_jiffies = fattr->time_start;
nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ATIME
| NFS_INO_REVAL_PAGECACHE);
/* Do atomic weak cache consistency updates */
nfs_wcc_update_inode(inode, fattr);
/* More cache consistency checks */
if (!(fattr->valid & NFS_ATTR_FATTR_V4)) {
/* NFSv2/v3: Check if the mtime agrees */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
dprintk("NFS: mtime change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
/* If ctime has changed we should definitely clear access+acl caches */
if (!timespec_equal(&inode->i_ctime, &fattr->ctime))
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
} else if (nfsi->change_attr != fattr->change_attr) {
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
/* Check if our cached file size is stale */
new_isize = nfs_size_to_loff_t(fattr->size);
cur_isize = i_size_read(inode);
if (new_isize != cur_isize) {
/* Do we perhaps have any outstanding writes, or has
* the file grown beyond our last write? */
if (nfsi->npages == 0 || new_isize > cur_isize) {
i_size_write(inode, new_isize);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
}
dprintk("NFS: isize change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
}
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
nfsi->change_attr = fattr->change_attr;
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO) ||
inode->i_uid != fattr->uid ||
inode->i_gid != fattr->gid)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
if (inode->i_nlink != fattr->nlink)
invalid |= NFS_INO_INVALID_ATTR;
inode->i_mode = fattr->mode;
inode->i_nlink = fattr->nlink;
inode->i_uid = fattr->uid;
inode->i_gid = fattr->gid;
if (fattr->valid & (NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4)) {
/*
* report the blocks in 512byte units
*/
inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
} else {
inode->i_blocks = fattr->du.nfs2.blocks;
}
/* Update attrtimeo value if we're out of the unstable period */
if (invalid & NFS_INO_INVALID_ATTR) {
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
nfsi->attr_gencount = nfs_inc_attr_generation_counter();
} else {
if (!time_in_range(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode))
nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
}
}
invalid &= ~NFS_INO_INVALID_ATTR;
/* Don't invalidate the data if we were to blame */
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
|| S_ISLNK(inode->i_mode)))
invalid &= ~NFS_INO_INVALID_DATA;
if (!nfs_have_delegation(inode, FMODE_READ) ||
(nfsi->cache_validity & NFS_INO_REVAL_FORCED))
nfsi->cache_validity |= invalid;
nfsi->cache_validity &= ~NFS_INO_REVAL_FORCED;
return 0;
out_changed:
/*
* Big trouble! The inode has become a different object.
*/
printk(KERN_DEBUG "%s: inode %ld mode changed, %07o to %07o\n",
__func__, inode->i_ino, inode->i_mode, fattr->mode);
out_err:
/*
* No need to worry about unhashing the dentry, as the
* lookup validation will know that the inode is bad.
* (But we fall through to invalidate the caches.)
*/
nfs_invalidate_inode(inode);
return -ESTALE;
out_fileid:
printk(KERN_ERR "NFS: server %s error: fileid changed\n"
"fsid %s: expected fileid 0x%Lx, got 0x%Lx\n",
NFS_SERVER(inode)->nfs_client->cl_hostname, inode->i_sb->s_id,
(long long)nfsi->fileid, (long long)fattr->fileid);
goto out_err;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,248 | int nfs_write_inode(struct inode *inode, int sync)
{
int ret;
if (sync) {
ret = filemap_fdatawait(inode->i_mapping);
if (ret == 0)
ret = nfs_commit_inode(inode, FLUSH_SYNC);
} else
ret = nfs_commit_inode(inode, 0);
if (ret >= 0)
return 0;
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
}
| DoS | 0 | int nfs_write_inode(struct inode *inode, int sync)
{
int ret;
if (sync) {
ret = filemap_fdatawait(inode->i_mapping);
if (ret == 0)
ret = nfs_commit_inode(inode, FLUSH_SYNC);
} else
ret = nfs_commit_inode(inode, 0);
if (ret >= 0)
return 0;
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,249 | void nfs_zap_acl_cache(struct inode *inode)
{
void (*clear_acl_cache)(struct inode *);
clear_acl_cache = NFS_PROTO(inode)->clear_acl_cache;
if (clear_acl_cache != NULL)
clear_acl_cache(inode);
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL;
spin_unlock(&inode->i_lock);
}
| DoS | 0 | void nfs_zap_acl_cache(struct inode *inode)
{
void (*clear_acl_cache)(struct inode *);
clear_acl_cache = NFS_PROTO(inode)->clear_acl_cache;
if (clear_acl_cache != NULL)
clear_acl_cache(inode);
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL;
spin_unlock(&inode->i_lock);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,250 | void nfs_zap_caches(struct inode *inode)
{
spin_lock(&inode->i_lock);
nfs_zap_caches_locked(inode);
spin_unlock(&inode->i_lock);
}
| DoS | 0 | void nfs_zap_caches(struct inode *inode)
{
spin_lock(&inode->i_lock);
nfs_zap_caches_locked(inode);
spin_unlock(&inode->i_lock);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,251 | static void nfs_zap_caches_locked(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
int mode = inode->i_mode;
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = jiffies;
memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode)));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
else
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
}
| DoS | 0 | static void nfs_zap_caches_locked(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
int mode = inode->i_mode;
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = jiffies;
memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode)));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
else
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,252 | void nfs_zap_mapping(struct inode *inode, struct address_space *mapping)
{
if (mapping->nrpages != 0) {
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA;
spin_unlock(&inode->i_lock);
}
}
| DoS | 0 | void nfs_zap_mapping(struct inode *inode, struct address_space *mapping)
{
if (mapping->nrpages != 0) {
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA;
spin_unlock(&inode->i_lock);
}
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,253 | static int nfsiod_start(void)
{
struct workqueue_struct *wq;
dprintk("RPC: creating workqueue nfsiod\n");
wq = create_singlethread_workqueue("nfsiod");
if (wq == NULL)
return -ENOMEM;
nfsiod_workqueue = wq;
return 0;
}
| DoS | 0 | static int nfsiod_start(void)
{
struct workqueue_struct *wq;
dprintk("RPC: creating workqueue nfsiod\n");
wq = create_singlethread_workqueue("nfsiod");
if (wq == NULL)
return -ENOMEM;
nfsiod_workqueue = wq;
return 0;
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,254 | static void nfsiod_stop(void)
{
struct workqueue_struct *wq;
wq = nfsiod_workqueue;
if (wq == NULL)
return;
nfsiod_workqueue = NULL;
destroy_workqueue(wq);
}
| DoS | 0 | static void nfsiod_stop(void)
{
struct workqueue_struct *wq;
wq = nfsiod_workqueue;
if (wq == NULL)
return;
nfsiod_workqueue = NULL;
destroy_workqueue(wq);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,255 | void put_nfs_open_context(struct nfs_open_context *ctx)
{
__put_nfs_open_context(ctx, 0);
}
| DoS | 0 | void put_nfs_open_context(struct nfs_open_context *ctx)
{
__put_nfs_open_context(ctx, 0);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,256 | static void put_nfs_open_context_sync(struct nfs_open_context *ctx)
{
__put_nfs_open_context(ctx, 1);
}
| DoS | 0 | static void put_nfs_open_context_sync(struct nfs_open_context *ctx)
{
__put_nfs_open_context(ctx, 1);
}
| @@ -592,7 +592,7 @@ static void nfs_file_set_open_context(struct file *filp, struct nfs_open_context
/*
* Given an inode, search for an open context with the desired characteristics
*/
-struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode)
+struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *pos, *ctx = NULL; | null | null | null |
18,257 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_getaclargs args = {
.fh = NFS_FH(inode),
.acl_pages = pages,
.acl_len = buflen,
};
size_t resp_len = buflen;
void *resp_buf;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
.rpc_argp = &args,
.rpc_resp = &resp_len,
};
struct page *localpage = NULL;
int ret;
if (buflen < PAGE_SIZE) {
/* As long as we're doing a round trip to the server anyway,
* let's be prepared for a page of acl data. */
localpage = alloc_page(GFP_KERNEL);
resp_buf = page_address(localpage);
if (localpage == NULL)
return -ENOMEM;
args.acl_pages[0] = localpage;
args.acl_pgbase = 0;
resp_len = args.acl_len = PAGE_SIZE;
} else {
resp_buf = buf;
buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
}
ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (ret)
goto out_free;
if (resp_len > args.acl_len)
nfs4_write_cached_acl(inode, NULL, resp_len);
else
nfs4_write_cached_acl(inode, resp_buf, resp_len);
if (buf) {
ret = -ERANGE;
if (resp_len > buflen)
goto out_free;
if (localpage)
memcpy(buf, resp_buf, resp_len);
}
ret = resp_len;
out_free:
if (localpage)
__free_page(localpage);
return ret;
}
| DoS | 0 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_getaclargs args = {
.fh = NFS_FH(inode),
.acl_pages = pages,
.acl_len = buflen,
};
size_t resp_len = buflen;
void *resp_buf;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
.rpc_argp = &args,
.rpc_resp = &resp_len,
};
struct page *localpage = NULL;
int ret;
if (buflen < PAGE_SIZE) {
/* As long as we're doing a round trip to the server anyway,
* let's be prepared for a page of acl data. */
localpage = alloc_page(GFP_KERNEL);
resp_buf = page_address(localpage);
if (localpage == NULL)
return -ENOMEM;
args.acl_pages[0] = localpage;
args.acl_pgbase = 0;
resp_len = args.acl_len = PAGE_SIZE;
} else {
resp_buf = buf;
buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
}
ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (ret)
goto out_free;
if (resp_len > args.acl_len)
nfs4_write_cached_acl(inode, NULL, resp_len);
else
nfs4_write_cached_acl(inode, resp_buf, resp_len);
if (buf) {
ret = -ERANGE;
if (resp_len > buflen)
goto out_free;
if (localpage)
memcpy(buf, resp_buf, resp_len);
}
ret = resp_len;
out_free:
if (localpage)
__free_page(localpage);
return ret;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,258 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
struct nfs_server *server = NFS_SERVER(inode);
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_setaclargs arg = {
.fh = NFS_FH(inode),
.acl_pages = pages,
.acl_len = buflen,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
.rpc_argp = &arg,
.rpc_resp = NULL,
};
int ret;
if (!nfs4_server_supports_acls(server))
return -EOPNOTSUPP;
nfs_inode_return_delegation(inode);
buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_access_zap_cache(inode);
nfs_zap_acl_cache(inode);
return ret;
}
| DoS | 0 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
struct nfs_server *server = NFS_SERVER(inode);
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_setaclargs arg = {
.fh = NFS_FH(inode),
.acl_pages = pages,
.acl_len = buflen,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
.rpc_argp = &arg,
.rpc_resp = NULL,
};
int ret;
if (!nfs4_server_supports_acls(server))
return -EOPNOTSUPP;
nfs_inode_return_delegation(inode);
buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
nfs_access_zap_cache(inode);
nfs_zap_acl_cache(inode);
return ret;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,259 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *fsinfo)
{
struct nfs4_fsinfo_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
.rpc_argp = &args,
.rpc_resp = fsinfo,
};
return rpc_call_sync(server->client, &msg, 0);
}
| DoS | 0 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *fsinfo)
{
struct nfs4_fsinfo_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
.rpc_argp = &args,
.rpc_resp = fsinfo,
};
return rpc_call_sync(server->client, &msg, 0);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,260 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
struct nfs_fattr *fattr, struct iattr *sattr,
struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_setattrargs arg = {
.fh = NFS_FH(inode),
.iap = sattr,
.server = server,
.bitmask = server->attr_bitmask,
};
struct nfs_setattrres res = {
.fattr = fattr,
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = cred,
};
unsigned long timestamp = jiffies;
int status;
nfs_fattr_init(fattr);
if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
/* Use that stateid */
} else if (state != NULL) {
nfs4_copy_stateid(&arg.stateid, state, current->files);
} else
memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0 && state != NULL)
renew_lease(server, timestamp);
return status;
}
| DoS | 0 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
struct nfs_fattr *fattr, struct iattr *sattr,
struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_setattrargs arg = {
.fh = NFS_FH(inode),
.iap = sattr,
.server = server,
.bitmask = server->attr_bitmask,
};
struct nfs_setattrres res = {
.fattr = fattr,
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = cred,
};
unsigned long timestamp = jiffies;
int status;
nfs_fattr_init(fattr);
if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
/* Use that stateid */
} else if (state != NULL) {
nfs4_copy_stateid(&arg.stateid, state, current->files);
} else
memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0 && state != NULL)
renew_lease(server, timestamp);
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,261 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim)
{
struct nfs4_lockdata *data;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
.rpc_cred = state->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(state->inode),
.rpc_message = &msg,
.callback_ops = &nfs4_lock_ops,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
int ret;
dprintk("%s: begin!\n", __func__);
data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
fl->fl_u.nfs4_fl.owner);
if (data == NULL)
return -ENOMEM;
if (IS_SETLKW(cmd))
data->arg.block = 1;
if (reclaim != 0)
data->arg.reclaim = 1;
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
ret = nfs4_wait_for_completion_rpc_task(task);
if (ret == 0) {
ret = data->rpc_status;
if (ret == -NFS4ERR_DENIED)
ret = -EAGAIN;
} else
data->cancelled = 1;
rpc_put_task(task);
dprintk("%s: done, ret = %d!\n", __func__, ret);
return ret;
}
| DoS | 0 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim)
{
struct nfs4_lockdata *data;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
.rpc_cred = state->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(state->inode),
.rpc_message = &msg,
.callback_ops = &nfs4_lock_ops,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
int ret;
dprintk("%s: begin!\n", __func__);
data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
fl->fl_u.nfs4_fl.owner);
if (data == NULL)
return -ENOMEM;
if (IS_SETLKW(cmd))
data->arg.block = 1;
if (reclaim != 0)
data->arg.reclaim = 1;
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
ret = nfs4_wait_for_completion_rpc_task(task);
if (ret == 0) {
ret = data->rpc_status;
if (ret == -NFS4ERR_DENIED)
ret = -EAGAIN;
} else
data->cancelled = 1;
rpc_put_task(task);
dprintk("%s: done, ret = %d!\n", __func__, ret);
return ret;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,262 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_fattr fattr;
struct nfs4_accessargs args = {
.fh = NFS_FH(inode),
.bitmask = server->attr_bitmask,
};
struct nfs4_accessres res = {
.server = server,
.fattr = &fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
.rpc_argp = &args,
.rpc_resp = &res,
.rpc_cred = entry->cred,
};
int mode = entry->mask;
int status;
/*
* Determine which access bits we want to ask for...
*/
if (mode & MAY_READ)
args.access |= NFS4_ACCESS_READ;
if (S_ISDIR(inode->i_mode)) {
if (mode & MAY_WRITE)
args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
if (mode & MAY_EXEC)
args.access |= NFS4_ACCESS_LOOKUP;
} else {
if (mode & MAY_WRITE)
args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
if (mode & MAY_EXEC)
args.access |= NFS4_ACCESS_EXECUTE;
}
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (!status) {
entry->mask = 0;
if (res.access & NFS4_ACCESS_READ)
entry->mask |= MAY_READ;
if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
entry->mask |= MAY_WRITE;
if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
nfs_refresh_inode(inode, &fattr);
}
return status;
}
| DoS | 0 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_fattr fattr;
struct nfs4_accessargs args = {
.fh = NFS_FH(inode),
.bitmask = server->attr_bitmask,
};
struct nfs4_accessres res = {
.server = server,
.fattr = &fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
.rpc_argp = &args,
.rpc_resp = &res,
.rpc_cred = entry->cred,
};
int mode = entry->mask;
int status;
/*
* Determine which access bits we want to ask for...
*/
if (mode & MAY_READ)
args.access |= NFS4_ACCESS_READ;
if (S_ISDIR(inode->i_mode)) {
if (mode & MAY_WRITE)
args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
if (mode & MAY_EXEC)
args.access |= NFS4_ACCESS_LOOKUP;
} else {
if (mode & MAY_WRITE)
args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
if (mode & MAY_EXEC)
args.access |= NFS4_ACCESS_EXECUTE;
}
nfs_fattr_init(&fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (!status) {
entry->mask = 0;
if (res.access & NFS4_ACCESS_READ)
entry->mask |= MAY_READ;
if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
entry->mask |= MAY_WRITE;
if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
nfs_refresh_inode(inode, &fattr);
}
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,263 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
{
struct nfs4_delegreturndata *data;
struct nfs_server *server = NFS_SERVER(inode);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
.rpc_cred = cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
.flags = RPC_TASK_ASYNC,
};
int status = 0;
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
data->args.fhandle = &data->fh;
data->args.stateid = &data->stateid;
data->args.bitmask = server->attr_bitmask;
nfs_copy_fh(&data->fh, NFS_FH(inode));
memcpy(&data->stateid, stateid, sizeof(data->stateid));
data->res.fattr = &data->fattr;
data->res.server = server;
nfs_fattr_init(data->res.fattr);
data->timestamp = jiffies;
data->rpc_status = 0;
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args,
msg.rpc_resp = &data->res,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
if (!issync)
goto out;
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0)
goto out;
status = data->rpc_status;
if (status != 0)
goto out;
nfs_refresh_inode(inode, &data->fattr);
out:
rpc_put_task(task);
return status;
}
| DoS | 0 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
{
struct nfs4_delegreturndata *data;
struct nfs_server *server = NFS_SERVER(inode);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
.rpc_cred = cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
.flags = RPC_TASK_ASYNC,
};
int status = 0;
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
data->args.fhandle = &data->fh;
data->args.stateid = &data->stateid;
data->args.bitmask = server->attr_bitmask;
nfs_copy_fh(&data->fh, NFS_FH(inode));
memcpy(&data->stateid, stateid, sizeof(data->stateid));
data->res.fattr = &data->fattr;
data->res.server = server;
nfs_fattr_init(data->res.fattr);
data->timestamp = jiffies;
data->rpc_status = 0;
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args,
msg.rpc_resp = &data->res,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
if (!issync)
goto out;
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0)
goto out;
status = data->rpc_status;
if (status != 0)
goto out;
nfs_refresh_inode(inode, &data->fattr);
out:
rpc_put_task(task);
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,264 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs4_getattr_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct nfs4_getattr_res res = {
.fattr = fattr,
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
.rpc_argp = &args,
.rpc_resp = &res,
};
nfs_fattr_init(fattr);
return rpc_call_sync(server->client, &msg, 0);
}
| DoS | 0 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs4_getattr_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct nfs4_getattr_res res = {
.fattr = fattr,
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
.rpc_argp = &args,
.rpc_resp = &res,
};
nfs_fattr_init(fattr);
return rpc_call_sync(server->client, &msg, 0);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,265 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
struct inode *inode = state->inode;
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_client *clp = server->nfs_client;
struct nfs_lockt_args arg = {
.fh = NFS_FH(inode),
.fl = request,
};
struct nfs_lockt_res res = {
.denied = request,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = state->owner->so_cred,
};
struct nfs4_lock_state *lsp;
int status;
arg.lock_owner.clientid = clp->cl_clientid;
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out;
lsp = request->fl_u.nfs4_fl.owner;
arg.lock_owner.id = lsp->ls_id.id;
status = rpc_call_sync(server->client, &msg, 0);
switch (status) {
case 0:
request->fl_type = F_UNLCK;
break;
case -NFS4ERR_DENIED:
status = 0;
}
request->fl_ops->fl_release_private(request);
out:
return status;
}
| DoS | 0 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
struct inode *inode = state->inode;
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_client *clp = server->nfs_client;
struct nfs_lockt_args arg = {
.fh = NFS_FH(inode),
.fl = request,
};
struct nfs_lockt_res res = {
.denied = request,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
.rpc_argp = &arg,
.rpc_resp = &res,
.rpc_cred = state->owner->so_cred,
};
struct nfs4_lock_state *lsp;
int status;
arg.lock_owner.clientid = clp->cl_clientid;
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out;
lsp = request->fl_u.nfs4_fl.owner;
arg.lock_owner.id = lsp->ls_id.id;
status = rpc_call_sync(server->client, &msg, 0);
switch (status) {
case 0:
request->fl_type = F_UNLCK;
break;
case -NFS4ERR_DENIED:
status = 0;
}
request->fl_ops->fl_release_private(request);
out:
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,266 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
const struct qstr *name, struct nfs_fh *fhandle,
struct nfs_fattr *fattr)
{
int status;
struct nfs4_lookup_arg args = {
.bitmask = server->attr_bitmask,
.dir_fh = dirfh,
.name = name,
};
struct nfs4_lookup_res res = {
.server = server,
.fattr = fattr,
.fh = fhandle,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
.rpc_argp = &args,
.rpc_resp = &res,
};
nfs_fattr_init(fattr);
dprintk("NFS call lookupfh %s\n", name->name);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply lookupfh: %d\n", status);
return status;
}
| DoS | 0 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
const struct qstr *name, struct nfs_fh *fhandle,
struct nfs_fattr *fattr)
{
int status;
struct nfs4_lookup_arg args = {
.bitmask = server->attr_bitmask,
.dir_fh = dirfh,
.name = name,
};
struct nfs4_lookup_res res = {
.server = server,
.fattr = fattr,
.fh = fhandle,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
.rpc_argp = &args,
.rpc_resp = &res,
};
nfs_fattr_init(fattr);
dprintk("NFS call lookupfh %s\n", name->name);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply lookupfh: %d\n", status);
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,267 | static int _nfs4_proc_open(struct nfs4_opendata *data)
{
struct inode *dir = data->dir->d_inode;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_openargs *o_arg = &data->o_arg;
struct nfs_openres *o_res = &data->o_res;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
.rpc_argp = o_arg,
.rpc_resp = o_res,
.rpc_cred = data->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_open_ops,
.callback_data = data,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
int status;
kref_get(&data->kref);
data->rpc_done = 0;
data->rpc_status = 0;
data->cancelled = 0;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0) {
data->cancelled = 1;
smp_wmb();
} else
status = data->rpc_status;
rpc_put_task(task);
if (status != 0 || !data->rpc_done)
return status;
if (o_res->fh.size == 0)
_nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr);
if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
nfs_post_op_update_inode(dir, o_res->dir_attr);
} else
nfs_refresh_inode(dir, o_res->dir_attr);
if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
status = _nfs4_proc_open_confirm(data);
if (status != 0)
return status;
}
if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
_nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
return 0;
}
| DoS | 0 | static int _nfs4_proc_open(struct nfs4_opendata *data)
{
struct inode *dir = data->dir->d_inode;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_openargs *o_arg = &data->o_arg;
struct nfs_openres *o_res = &data->o_res;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
.rpc_argp = o_arg,
.rpc_resp = o_res,
.rpc_cred = data->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_open_ops,
.callback_data = data,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
int status;
kref_get(&data->kref);
data->rpc_done = 0;
data->rpc_status = 0;
data->cancelled = 0;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
if (status != 0) {
data->cancelled = 1;
smp_wmb();
} else
status = data->rpc_status;
rpc_put_task(task);
if (status != 0 || !data->rpc_done)
return status;
if (o_res->fh.size == 0)
_nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr);
if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
nfs_post_op_update_inode(dir, o_res->dir_attr);
} else
nfs_refresh_inode(dir, o_res->dir_attr);
if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
status = _nfs4_proc_open_confirm(data);
if (status != 0)
return status;
}
if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
_nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
return 0;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,268 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *pathconf)
{
struct nfs4_pathconf_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
.rpc_argp = &args,
.rpc_resp = pathconf,
};
/* None of the pathconf attributes are mandatory to implement */
if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
memset(pathconf, 0, sizeof(*pathconf));
return 0;
}
nfs_fattr_init(pathconf->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
| DoS | 0 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_pathconf *pathconf)
{
struct nfs4_pathconf_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
.rpc_argp = &args,
.rpc_resp = pathconf,
};
/* None of the pathconf attributes are mandatory to implement */
if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
memset(pathconf, 0, sizeof(*pathconf));
return 0;
}
nfs_fattr_init(pathconf->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,269 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page *page, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs4_readdir_arg args = {
.fh = NFS_FH(dir),
.pages = &page,
.pgbase = 0,
.count = count,
.bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
};
struct nfs4_readdir_res res;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
.rpc_argp = &args,
.rpc_resp = &res,
.rpc_cred = cred,
};
int status;
dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
dentry->d_parent->d_name.name,
dentry->d_name.name,
(unsigned long long)cookie);
nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
res.pgbase = args.pgbase;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (status == 0)
memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
nfs_invalidate_atime(dir);
dprintk("%s: returns %d\n", __func__, status);
return status;
}
| DoS | 0 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page *page, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
struct nfs4_readdir_arg args = {
.fh = NFS_FH(dir),
.pages = &page,
.pgbase = 0,
.count = count,
.bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
};
struct nfs4_readdir_res res;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
.rpc_argp = &args,
.rpc_resp = &res,
.rpc_cred = cred,
};
int status;
dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
dentry->d_parent->d_name.name,
dentry->d_name.name,
(unsigned long long)cookie);
nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
res.pgbase = args.pgbase;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (status == 0)
memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
nfs_invalidate_atime(dir);
dprintk("%s: returns %d\n", __func__, status);
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,270 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs4_readlink args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
.rpc_argp = &args,
.rpc_resp = NULL,
};
return rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
}
| DoS | 0 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
struct nfs4_readlink args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
.pglen = pglen,
.pages = &page,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
.rpc_argp = &args,
.rpc_resp = NULL,
};
return rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,271 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_removeargs args = {
.fh = NFS_FH(dir),
.name.len = name->len,
.name.name = name->name,
.bitmask = server->attr_bitmask,
};
struct nfs_removeres res = {
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
.rpc_argp = &args,
.rpc_resp = &res,
};
int status;
nfs_fattr_init(&res.dir_attr);
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0) {
update_changeattr(dir, &res.cinfo);
nfs_post_op_update_inode(dir, &res.dir_attr);
}
return status;
}
| DoS | 0 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_removeargs args = {
.fh = NFS_FH(dir),
.name.len = name->len,
.name.name = name->name,
.bitmask = server->attr_bitmask,
};
struct nfs_removeres res = {
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
.rpc_argp = &args,
.rpc_resp = &res,
};
int status;
nfs_fattr_init(&res.dir_attr);
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0) {
update_changeattr(dir, &res.cinfo);
nfs_post_op_update_inode(dir, &res.dir_attr);
}
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,272 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_server *server = NFS_SERVER(old_dir);
struct nfs4_rename_arg arg = {
.old_dir = NFS_FH(old_dir),
.new_dir = NFS_FH(new_dir),
.old_name = old_name,
.new_name = new_name,
.bitmask = server->attr_bitmask,
};
struct nfs_fattr old_fattr, new_fattr;
struct nfs4_rename_res res = {
.server = server,
.old_fattr = &old_fattr,
.new_fattr = &new_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
nfs_fattr_init(res.old_fattr);
nfs_fattr_init(res.new_fattr);
status = rpc_call_sync(server->client, &msg, 0);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
nfs_post_op_update_inode(old_dir, res.old_fattr);
update_changeattr(new_dir, &res.new_cinfo);
nfs_post_op_update_inode(new_dir, res.new_fattr);
}
return status;
}
| DoS | 0 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_server *server = NFS_SERVER(old_dir);
struct nfs4_rename_arg arg = {
.old_dir = NFS_FH(old_dir),
.new_dir = NFS_FH(new_dir),
.old_name = old_name,
.new_name = new_name,
.bitmask = server->attr_bitmask,
};
struct nfs_fattr old_fattr, new_fattr;
struct nfs4_rename_res res = {
.server = server,
.old_fattr = &old_fattr,
.new_fattr = &new_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status;
nfs_fattr_init(res.old_fattr);
nfs_fattr_init(res.new_fattr);
status = rpc_call_sync(server->client, &msg, 0);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
nfs_post_op_update_inode(old_dir, res.old_fattr);
update_changeattr(new_dir, &res.new_cinfo);
nfs_post_op_update_inode(new_dir, res.new_fattr);
}
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,273 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
unsigned char fl_flags = request->fl_flags;
int status;
/* Is this a delegated open? */
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out;
request->fl_flags |= FL_ACCESS;
status = do_vfs_lock(request->fl_file, request);
if (status < 0)
goto out;
down_read(&nfsi->rwsem);
if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
/* Yes: cache locks! */
/* ...but avoid races with delegation recall... */
request->fl_flags = fl_flags & ~FL_SLEEP;
status = do_vfs_lock(request->fl_file, request);
goto out_unlock;
}
status = _nfs4_do_setlk(state, cmd, request, 0);
if (status != 0)
goto out_unlock;
/* Note: we always want to sleep here! */
request->fl_flags = fl_flags | FL_SLEEP;
if (do_vfs_lock(request->fl_file, request) < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
out_unlock:
up_read(&nfsi->rwsem);
out:
request->fl_flags = fl_flags;
return status;
}
| DoS | 0 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
unsigned char fl_flags = request->fl_flags;
int status;
/* Is this a delegated open? */
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out;
request->fl_flags |= FL_ACCESS;
status = do_vfs_lock(request->fl_file, request);
if (status < 0)
goto out;
down_read(&nfsi->rwsem);
if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
/* Yes: cache locks! */
/* ...but avoid races with delegation recall... */
request->fl_flags = fl_flags & ~FL_SLEEP;
status = do_vfs_lock(request->fl_file, request);
goto out_unlock;
}
status = _nfs4_do_setlk(state, cmd, request, 0);
if (status != 0)
goto out_unlock;
/* Note: we always want to sleep here! */
request->fl_flags = fl_flags | FL_SLEEP;
if (do_vfs_lock(request->fl_file, request) < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
out_unlock:
up_read(&nfsi->rwsem);
out:
request->fl_flags = fl_flags;
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,274 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *fsstat)
{
struct nfs4_statfs_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
.rpc_argp = &args,
.rpc_resp = fsstat,
};
nfs_fattr_init(fsstat->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
| DoS | 0 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsstat *fsstat)
{
struct nfs4_statfs_arg args = {
.fh = fhandle,
.bitmask = server->attr_bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
.rpc_argp = &args,
.rpc_resp = fsstat,
};
nfs_fattr_init(fsstat->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,275 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
{
struct nfs4_server_caps_res res = {};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
.rpc_argp = fhandle,
.rpc_resp = &res,
};
int status;
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0) {
memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
server->caps |= NFS_CAP_ACLS;
if (res.has_links != 0)
server->caps |= NFS_CAP_HARDLINKS;
if (res.has_symlinks != 0)
server->caps |= NFS_CAP_SYMLINKS;
server->acl_bitmask = res.acl_bitmask;
}
return status;
}
| DoS | 0 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
{
struct nfs4_server_caps_res res = {};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
.rpc_argp = fhandle,
.rpc_resp = &res,
};
int status;
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0) {
memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
server->caps |= NFS_CAP_ACLS;
if (res.has_links != 0)
server->caps |= NFS_CAP_HARDLINKS;
if (res.has_symlinks != 0)
server->caps |= NFS_CAP_SYMLINKS;
server->acl_bitmask = res.acl_bitmask;
}
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,276 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
struct nfs_open_context *ctx,
struct nfs4_lock_state *lsp,
struct nfs_seqid *seqid)
{
struct nfs4_unlockdata *p;
struct inode *inode = lsp->ls_state->inode;
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL)
return NULL;
p->arg.fh = NFS_FH(inode);
p->arg.fl = &p->fl;
p->arg.seqid = seqid;
p->res.seqid = seqid;
p->arg.stateid = &lsp->ls_stateid;
p->lsp = lsp;
atomic_inc(&lsp->ls_count);
/* Ensure we don't close file until we're done freeing locks! */
p->ctx = get_nfs_open_context(ctx);
memcpy(&p->fl, fl, sizeof(p->fl));
p->server = NFS_SERVER(inode);
return p;
}
| DoS | 0 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
struct nfs_open_context *ctx,
struct nfs4_lock_state *lsp,
struct nfs_seqid *seqid)
{
struct nfs4_unlockdata *p;
struct inode *inode = lsp->ls_state->inode;
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL)
return NULL;
p->arg.fh = NFS_FH(inode);
p->arg.fl = &p->fl;
p->arg.seqid = seqid;
p->res.seqid = seqid;
p->arg.stateid = &lsp->ls_stateid;
p->lsp = lsp;
atomic_inc(&lsp->ls_count);
/* Ensure we don't close file until we're done freeing locks! */
p->ctx = get_nfs_open_context(ctx);
memcpy(&p->fl, fl, sizeof(p->fl));
p->server = NFS_SERVER(inode);
return p;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,277 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
{
struct nfs_client *clp = server->nfs_client;
if (!clp || task->tk_status >= 0)
return 0;
switch(task->tk_status) {
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
nfs4_state_mark_reclaim_nograce(clp, state);
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
nfs4_schedule_state_recovery(clp);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
task->tk_status = 0;
return -EAGAIN;
case -NFS4ERR_DELAY:
nfs_inc_server_stats(server, NFSIOS_DELAY);
case -NFS4ERR_GRACE:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
task->tk_status = 0;
return -EAGAIN;
case -NFS4ERR_OLD_STATEID:
task->tk_status = 0;
return -EAGAIN;
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
}
| DoS | 0 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
{
struct nfs_client *clp = server->nfs_client;
if (!clp || task->tk_status >= 0)
return 0;
switch(task->tk_status) {
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
nfs4_state_mark_reclaim_nograce(clp, state);
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
nfs4_schedule_state_recovery(clp);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
task->tk_status = 0;
return -EAGAIN;
case -NFS4ERR_DELAY:
nfs_inc_server_stats(server, NFSIOS_DELAY);
case -NFS4ERR_GRACE:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
task->tk_status = 0;
return -EAGAIN;
case -NFS4ERR_OLD_STATEID:
task->tk_status = 0;
return -EAGAIN;
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,278 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
{
int res = 0;
might_sleep();
if (*timeout <= 0)
*timeout = NFS4_POLL_RETRY_MIN;
if (*timeout > NFS4_POLL_RETRY_MAX)
*timeout = NFS4_POLL_RETRY_MAX;
schedule_timeout_killable(*timeout);
if (fatal_signal_pending(current))
res = -ERESTARTSYS;
*timeout <<= 1;
return res;
}
| DoS | 0 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
{
int res = 0;
might_sleep();
if (*timeout <= 0)
*timeout = NFS4_POLL_RETRY_MIN;
if (*timeout > NFS4_POLL_RETRY_MAX)
*timeout = NFS4_POLL_RETRY_MAX;
schedule_timeout_killable(*timeout);
if (fatal_signal_pending(current))
res = -ERESTARTSYS;
*timeout <<= 1;
return res;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,279 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
data->rpc_status = task->tk_status;
if (data->rpc_status == 0)
renew_lease(data->res.server, data->timestamp);
}
| DoS | 0 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
data->rpc_status = task->tk_status;
if (data->rpc_status == 0)
renew_lease(data->res.server, data->timestamp);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,280 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
do {
err = _nfs4_open_expired(ctx, state);
if (err == -NFS4ERR_DELAY)
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| DoS | 0 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
do {
err = _nfs4_open_expired(ctx, state);
if (err == -NFS4ERR_DELAY)
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,281 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
struct nfs_open_context *ctx,
struct nfs4_lock_state *lsp,
struct nfs_seqid *seqid)
{
struct nfs4_unlockdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(lsp->ls_state->inode),
.rpc_message = &msg,
.callback_ops = &nfs4_locku_ops,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
/* Ensure this is an unlock - when canceling a lock, the
* canceled lock is passed in, and it won't be an unlock.
*/
fl->fl_type = F_UNLCK;
data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
if (data == NULL) {
nfs_free_seqid(seqid);
return ERR_PTR(-ENOMEM);
}
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
return rpc_run_task(&task_setup_data);
}
| DoS | 0 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
struct nfs_open_context *ctx,
struct nfs4_lock_state *lsp,
struct nfs_seqid *seqid)
{
struct nfs4_unlockdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(lsp->ls_state->inode),
.rpc_message = &msg,
.callback_ops = &nfs4_locku_ops,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
/* Ensure this is an unlock - when canceling a lock, the
* canceled lock is passed in, and it won't be an unlock.
*/
fl->fl_type = F_UNLCK;
data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
if (data == NULL) {
nfs_free_seqid(seqid);
return ERR_PTR(-ENOMEM);
}
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
return rpc_run_task(&task_setup_data);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,282 | static void nfs4_free_closedata(void *data)
{
struct nfs4_closedata *calldata = data;
struct nfs4_state_owner *sp = calldata->state->owner;
nfs4_put_open_state(calldata->state);
nfs_free_seqid(calldata->arg.seqid);
nfs4_put_state_owner(sp);
path_put(&calldata->path);
kfree(calldata);
}
| DoS | 0 | static void nfs4_free_closedata(void *data)
{
struct nfs4_closedata *calldata = data;
struct nfs4_state_owner *sp = calldata->state->owner;
nfs4_put_open_state(calldata->state);
nfs_free_seqid(calldata->arg.seqid);
nfs4_put_state_owner(sp);
path_put(&calldata->path);
kfree(calldata);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,283 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
{
int status = -ENOMEM;
struct page *page = NULL;
struct nfs4_fs_locations *locations = NULL;
page = alloc_page(GFP_KERNEL);
if (page == NULL)
goto out;
locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
if (locations == NULL)
goto out;
status = nfs4_proc_fs_locations(dir, name, locations, page);
if (status != 0)
goto out;
/* Make sure server returned a different fsid for the referral */
if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name);
status = -EIO;
goto out;
}
memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
if (!fattr->mode)
fattr->mode = S_IFDIR;
memset(fhandle, 0, sizeof(struct nfs_fh));
out:
if (page)
__free_page(page);
if (locations)
kfree(locations);
return status;
}
| DoS | 0 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
{
int status = -ENOMEM;
struct page *page = NULL;
struct nfs4_fs_locations *locations = NULL;
page = alloc_page(GFP_KERNEL);
if (page == NULL)
goto out;
locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
if (locations == NULL)
goto out;
status = nfs4_proc_fs_locations(dir, name, locations, page);
if (status != 0)
goto out;
/* Make sure server returned a different fsid for the referral */
if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name);
status = -EIO;
goto out;
}
memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
if (!fattr->mode)
fattr->mode = S_IFDIR;
memset(fhandle, 0, sizeof(struct nfs_fh));
out:
if (page)
__free_page(page);
if (locations)
kfree(locations);
return status;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,284 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf,
size_t buflen)
{
struct inode *inode = dentry->d_inode;
if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
return -EOPNOTSUPP;
return nfs4_proc_get_acl(inode, buf, buflen);
}
| DoS | 0 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf,
size_t buflen)
{
struct inode *inode = dentry->d_inode;
if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
return -EOPNOTSUPP;
return nfs4_proc_get_acl(inode, buf, buflen);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,285 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_state *state = exception->state;
int ret = errorcode;
exception->retry = 0;
switch(errorcode) {
case 0:
return 0;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
nfs4_state_mark_reclaim_nograce(clp, state);
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
nfs4_schedule_state_recovery(clp);
ret = nfs4_wait_clnt_recover(clp);
if (ret == 0)
exception->retry = 1;
break;
case -NFS4ERR_FILE_OPEN:
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
ret = nfs4_delay(server->client, &exception->timeout);
if (ret != 0)
break;
case -NFS4ERR_OLD_STATEID:
exception->retry = 1;
}
/* We failed to handle the error */
return nfs4_map_errors(ret);
}
| DoS | 0 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_state *state = exception->state;
int ret = errorcode;
exception->retry = 0;
switch(errorcode) {
case 0:
return 0;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
nfs4_state_mark_reclaim_nograce(clp, state);
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
nfs4_schedule_state_recovery(clp);
ret = nfs4_wait_clnt_recover(clp);
if (ret == 0)
exception->retry = 1;
break;
case -NFS4ERR_FILE_OPEN:
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
ret = nfs4_delay(server->client, &exception->timeout);
if (ret != 0)
break;
case -NFS4ERR_OLD_STATEID:
exception->retry = 1;
}
/* We failed to handle the error */
return nfs4_map_errors(ret);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,286 | static void nfs4_init_opendata_res(struct nfs4_opendata *p)
{
p->o_res.f_attr = &p->f_attr;
p->o_res.dir_attr = &p->dir_attr;
p->o_res.seqid = p->o_arg.seqid;
p->c_res.seqid = p->c_arg.seqid;
p->o_res.server = p->o_arg.server;
nfs_fattr_init(&p->f_attr);
nfs_fattr_init(&p->dir_attr);
}
| DoS | 0 | static void nfs4_init_opendata_res(struct nfs4_opendata *p)
{
p->o_res.f_attr = &p->f_attr;
p->o_res.dir_attr = &p->dir_attr;
p->o_res.seqid = p->o_arg.seqid;
p->c_res.seqid = p->c_arg.seqid;
p->o_res.server = p->o_arg.server;
nfs_fattr_init(&p->f_attr);
nfs_fattr_init(&p->dir_attr);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,287 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
{
size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
return 0;
if (buf && buflen < len)
return -ERANGE;
if (buf)
memcpy(buf, XATTR_NAME_NFSV4_ACL, len);
return len;
}
| DoS | 0 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
{
size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
return 0;
if (buf && buflen < len)
return -ERANGE;
if (buf)
memcpy(buf, XATTR_NAME_NFSV4_ACL, len);
return len;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,288 | static void nfs4_lock_done(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
dprintk("%s: begin!\n", __func__);
data->rpc_status = task->tk_status;
if (RPC_ASSASSINATED(task))
goto out;
if (data->arg.new_lock_owner != 0) {
if (data->rpc_status == 0)
nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
else
goto out;
}
if (data->rpc_status == 0) {
memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
sizeof(data->lsp->ls_stateid.data));
data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
}
out:
dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
}
| DoS | 0 | static void nfs4_lock_done(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
dprintk("%s: begin!\n", __func__);
data->rpc_status = task->tk_status;
if (RPC_ASSASSINATED(task))
goto out;
if (data->arg.new_lock_owner != 0) {
if (data->rpc_status == 0)
nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
else
goto out;
}
if (data->rpc_status == 0) {
memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
sizeof(data->lsp->ls_stateid.data));
data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
}
out:
dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,289 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
err = nfs4_set_lock_state(state, request);
if (err != 0)
return err;
do {
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 0);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| DoS | 0 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
err = nfs4_set_lock_state(state, request);
if (err != 0)
return err;
do {
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 0);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,290 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
struct nfs4_state *state = data->lsp->ls_state;
dprintk("%s: begin!\n", __func__);
if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
return;
/* Do we need to do an open_to_lock_owner? */
if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
return;
data->arg.open_stateid = &state->stateid;
data->arg.new_lock_owner = 1;
data->res.open_seqid = data->arg.open_seqid;
} else
data->arg.new_lock_owner = 0;
data->timestamp = jiffies;
rpc_call_start(task);
dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
}
| DoS | 0 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
struct nfs4_state *state = data->lsp->ls_state;
dprintk("%s: begin!\n", __func__);
if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
return;
/* Do we need to do an open_to_lock_owner? */
if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
return;
data->arg.open_stateid = &state->stateid;
data->arg.new_lock_owner = 1;
data->res.open_seqid = data->arg.open_seqid;
} else
data->arg.new_lock_owner = 0;
data->timestamp = jiffies;
rpc_call_start(task);
dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,291 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
do {
/* Cache the lock if possible... */
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 1);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| DoS | 0 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
do {
/* Cache the lock if possible... */
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 1);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,292 | static void nfs4_lock_release(void *calldata)
{
struct nfs4_lockdata *data = calldata;
dprintk("%s: begin!\n", __func__);
nfs_free_seqid(data->arg.open_seqid);
if (data->cancelled != 0) {
struct rpc_task *task;
task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
data->arg.lock_seqid);
if (!IS_ERR(task))
rpc_put_task(task);
dprintk("%s: cancelling lock!\n", __func__);
} else
nfs_free_seqid(data->arg.lock_seqid);
nfs4_put_lock_state(data->lsp);
put_nfs_open_context(data->ctx);
kfree(data);
dprintk("%s: done!\n", __func__);
}
| DoS | 0 | static void nfs4_lock_release(void *calldata)
{
struct nfs4_lockdata *data = calldata;
dprintk("%s: begin!\n", __func__);
nfs_free_seqid(data->arg.open_seqid);
if (data->cancelled != 0) {
struct rpc_task *task;
task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
data->arg.lock_seqid);
if (!IS_ERR(task))
rpc_put_task(task);
dprintk("%s: cancelling lock!\n", __func__);
} else
nfs_free_seqid(data->arg.lock_seqid);
nfs4_put_lock_state(data->lsp);
put_nfs_open_context(data->ctx);
kfree(data);
dprintk("%s: done!\n", __func__);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,293 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(server,
_nfs4_lookup_root(server, fhandle, info),
&exception);
} while (exception.retry);
return err;
}
| DoS | 0 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(server,
_nfs4_lookup_root(server, fhandle, info),
&exception);
} while (exception.retry);
return err;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,294 | int nfs4_map_errors(int err)
{
if (err < -1000) {
dprintk("%s could not handle NFSv4 error %d\n",
__func__, -err);
return -EIO;
}
return err;
}
| DoS | 0 | int nfs4_map_errors(int err)
{
if (err < -1000) {
dprintk("%s could not handle NFSv4 error %d\n",
__func__, -err);
return -EIO;
}
return err;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,295 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
data->rpc_status = task->tk_status;
if (RPC_ASSASSINATED(task))
return;
if (data->rpc_status == 0) {
memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
sizeof(data->o_res.stateid.data));
nfs_confirm_seqid(&data->owner->so_seqid, 0);
renew_lease(data->o_res.server, data->timestamp);
data->rpc_done = 1;
}
}
| DoS | 0 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
data->rpc_status = task->tk_status;
if (RPC_ASSASSINATED(task))
return;
if (data->rpc_status == 0) {
memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
sizeof(data->o_res.stateid.data));
nfs_confirm_seqid(&data->owner->so_seqid, 0);
renew_lease(data->o_res.server, data->timestamp);
data->rpc_done = 1;
}
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,296 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
{
struct nfs4_exception exception = { };
struct nfs_server *server = NFS_SERVER(state->inode);
int err;
do {
err = _nfs4_open_delegation_recall(ctx, state, stateid);
switch (err) {
case 0:
return err;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
/* Don't recall a delegation if it was lost */
nfs4_schedule_state_recovery(server->nfs_client);
return err;
}
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| DoS | 0 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
{
struct nfs4_exception exception = { };
struct nfs_server *server = NFS_SERVER(state->inode);
int err;
do {
err = _nfs4_open_delegation_recall(ctx, state, stateid);
switch (err) {
case 0:
return err;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
/* Don't recall a delegation if it was lost */
nfs4_schedule_state_recovery(server->nfs_client);
return err;
}
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
return err;
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,297 | static void nfs4_opendata_free(struct kref *kref)
{
struct nfs4_opendata *p = container_of(kref,
struct nfs4_opendata, kref);
nfs_free_seqid(p->o_arg.seqid);
if (p->state != NULL)
nfs4_put_open_state(p->state);
nfs4_put_state_owner(p->owner);
dput(p->dir);
path_put(&p->path);
kfree(p);
}
| DoS | 0 | static void nfs4_opendata_free(struct kref *kref)
{
struct nfs4_opendata *p = container_of(kref,
struct nfs4_opendata, kref);
nfs_free_seqid(p->o_arg.seqid);
if (p->state != NULL)
nfs4_put_open_state(p->state);
nfs4_put_state_owner(p->owner);
dput(p->dir);
path_put(&p->path);
kfree(p);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,298 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
.rpc_argp = clp,
.rpc_cred = cred,
};
return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
&nfs4_renew_ops, (void *)jiffies);
}
| DoS | 0 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
.rpc_argp = clp,
.rpc_cred = cred,
};
return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
&nfs4_renew_ops, (void *)jiffies);
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
18,299 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct nfs_server *server = NFS_SERVER(data->inode);
data->args.bitmask = server->attr_bitmask;
data->res.server = server;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}
| DoS | 0 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct nfs_server *server = NFS_SERVER(data->inode);
data->args.bitmask = server->attr_bitmask;
data->res.server = server;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}
| @@ -323,7 +323,7 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
}
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
- struct nfs4_state_owner *sp, int flags,
+ struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs)
{
struct dentry *parent = dget_parent(path->dentry);
@@ -343,7 +343,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
- p->o_arg.open_flags = flags,
+ p->o_arg.open_flags = flags;
+ p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
p->o_arg.clientid = server->nfs_client->cl_clientid;
p->o_arg.id = sp->so_owner_id.id;
p->o_arg.name = &p->path.dentry->d_name;
@@ -399,10 +400,13 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static int can_open_cached(struct nfs4_state *state, int mode)
+static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
- switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+
+ if (open_mode & O_EXCL)
+ goto out;
+ switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
break;
@@ -412,22 +416,23 @@ static int can_open_cached(struct nfs4_state *state, int mode)
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
}
+out:
return ret;
}
-static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
{
- if ((delegation->type & open_flags) != open_flags)
+ if ((delegation->type & fmode) != fmode)
return 0;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
return 0;
nfs_mark_delegation_referenced(delegation);
return 1;
}
-static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
{
- switch (open_flags) {
+ switch (fmode) {
case FMODE_WRITE:
state->n_wronly++;
break;
@@ -437,15 +442,15 @@ static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
- nfs4_state_set_mode_locked(state, state->state | open_flags);
+ nfs4_state_set_mode_locked(state, state->state | fmode);
}
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
- switch (open_flags) {
+ switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
@@ -457,14 +462,14 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
}
}
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
- nfs_set_open_stateid_locked(state, stateid, open_flags);
+ nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
}
-static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags)
+static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
{
/*
* Protect the call to nfs4_state_set_mode_locked and
@@ -476,20 +481,20 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s
set_bit(NFS_DELEGATED_STATE, &state->flags);
}
if (open_stateid != NULL)
- nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ nfs_set_open_stateid_locked(state, open_stateid, fmode);
write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- update_open_stateflags(state, open_flags);
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
}
-static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags)
+static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
{
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *deleg_cur;
int ret = 0;
- open_flags &= (FMODE_READ|FMODE_WRITE);
+ fmode &= (FMODE_READ|FMODE_WRITE);
rcu_read_lock();
deleg_cur = rcu_dereference(nfsi->delegation);
@@ -498,7 +503,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
spin_lock(&deleg_cur->lock);
if (nfsi->delegation != deleg_cur ||
- (deleg_cur->type & open_flags) != open_flags)
+ (deleg_cur->type & fmode) != fmode)
goto no_delegation_unlock;
if (delegation == NULL)
@@ -507,29 +512,29 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
goto no_delegation_unlock;
nfs_mark_delegation_referenced(deleg_cur);
- __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags);
+ __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
ret = 1;
no_delegation_unlock:
spin_unlock(&deleg_cur->lock);
no_delegation:
rcu_read_unlock();
if (!ret && open_stateid != NULL) {
- __update_open_stateid(state, open_stateid, NULL, open_flags);
+ __update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
return ret;
}
-static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
{
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ if (delegation == NULL || (delegation->type & fmode) == fmode) {
rcu_read_unlock();
return;
}
@@ -542,15 +547,16 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
struct nfs4_state *state = opendata->state;
struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_delegation *delegation;
- int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ int open_mode = opendata->o_arg.open_flags & O_EXCL;
+ fmode_t fmode = opendata->o_arg.fmode;
nfs4_stateid stateid;
int ret = -EAGAIN;
for (;;) {
- if (can_open_cached(state, open_mode)) {
+ if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
- if (can_open_cached(state, open_mode)) {
- update_open_stateflags(state, open_mode);
+ if (can_open_cached(state, fmode, open_mode)) {
+ update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
@@ -559,7 +565,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL ||
- !can_open_delegated(delegation, open_mode)) {
+ !can_open_delegated(delegation, fmode)) {
rcu_read_unlock();
break;
}
@@ -572,7 +578,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
ret = -EAGAIN;
/* Try to update the stateid using the delegation */
- if (update_open_stateid(state, NULL, &stateid, open_mode))
+ if (update_open_stateid(state, NULL, &stateid, fmode))
goto out_return_state;
}
out:
@@ -624,7 +630,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
}
update_open_stateid(state, &data->o_res.stateid, NULL,
- data->o_arg.open_flags);
+ data->o_arg.fmode);
iput(inode);
out:
return state;
@@ -655,20 +661,21 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
atomic_inc(&state->count);
return opendata;
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
{
struct nfs4_state *newstate;
int ret;
- opendata->o_arg.open_flags = openflags;
+ opendata->o_arg.open_flags = 0;
+ opendata->o_arg.fmode = fmode;
memset(&opendata->o_res, 0, sizeof(opendata->o_res));
memset(&opendata->c_res, 0, sizeof(opendata->c_res));
nfs4_init_opendata_res(opendata);
@@ -678,7 +685,7 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
- nfs4_close_state(&opendata->path, newstate, openflags);
+ nfs4_close_state(&opendata->path, newstate, fmode);
*res = newstate;
return 0;
}
@@ -734,7 +741,7 @@ static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
{
struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
- int delegation_type = 0;
+ fmode_t delegation_type = 0;
int status;
opendata = nfs4_open_recoverdata_alloc(ctx, state);
@@ -847,7 +854,7 @@ static void nfs4_open_confirm_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -911,7 +918,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
if (data->state != NULL) {
struct nfs_delegation *delegation;
- if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
goto out_no_action;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
@@ -980,7 +987,7 @@ static void nfs4_open_release(void *calldata)
goto out_free;
state = nfs4_opendata_to_nfs4_state(data);
if (!IS_ERR(state))
- nfs4_close_state(&data->path, state, data->o_arg.open_flags);
+ nfs4_close_state(&data->path, state, data->o_arg.fmode);
out_free:
nfs4_opendata_put(data);
}
@@ -1135,7 +1142,7 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
@@ -1153,9 +1160,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
if (status != 0)
goto err_put_state_owner;
if (path->dentry->d_inode != NULL)
- nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1187,14 +1194,14 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
@@ -1332,7 +1339,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
- if (calldata->arg.open_flags == 0)
+ if (calldata->arg.fmode == 0)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
@@ -1374,10 +1381,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_READ;
+ calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.open_flags = FMODE_WRITE;
+ calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_start(task);
@@ -1430,7 +1437,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
- calldata->arg.open_flags = 0;
+ calldata->arg.fmode = 0;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
@@ -1457,13 +1464,13 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode)
{
struct file *filp;
int ret;
/* If the open_intent is for execute, we have an extra check to make */
- if (nd->intent.open.flags & FMODE_EXEC) {
+ if (fmode & FMODE_EXEC) {
ret = nfs_may_open(state->inode,
state->owner->so_cred,
nd->intent.open.flags);
@@ -1479,7 +1486,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct
}
ret = PTR_ERR(filp);
out_close:
- nfs4_close_sync(path, state, nd->intent.open.flags);
+ nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE));
return ret;
}
@@ -1495,6 +1502,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct rpc_cred *cred;
struct nfs4_state *state;
struct dentry *res;
+ fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
@@ -1512,7 +1520,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT) {
@@ -1527,7 +1535,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
path.dentry = res;
nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
nfs_unblock_sillyrename(parent);
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return res;
}
@@ -1540,11 +1548,12 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
};
struct rpc_cred *cred;
struct nfs4_state *state;
+ fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_do_open(dir, &path, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
@@ -1561,10 +1570,10 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
}
if (state->inode == dentry->d_inode) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- nfs4_intent_set_file(nd, &path, state);
+ nfs4_intent_set_file(nd, &path, state, fmode);
return 1;
}
- nfs4_close_sync(&path, state, openflags);
+ nfs4_close_sync(&path, state, fmode);
out_drop:
d_drop(dentry);
return 0;
@@ -1990,14 +1999,15 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
};
struct nfs4_state *state;
struct rpc_cred *cred;
+ fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE);
int status = 0;
cred = rpc_lookup_cred();
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, &path, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
status = PTR_ERR(state);
@@ -2013,9 +2023,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(state->inode, &fattr);
}
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
- status = nfs4_intent_set_file(nd, &path, state);
+ status = nfs4_intent_set_file(nd, &path, state, fmode);
else
- nfs4_close_sync(&path, state, flags);
+ nfs4_close_sync(&path, state, fmode);
out_putcred:
put_rpccred(cred);
out: | null | null | null |
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