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return (0);
}
/*
* Process the buffer of nvlists, unpacking and storing each nvlist record
* into 'records'. 'leftover' is set to the number of bytes that weren't
* processed as there wasn't a complete record.
*/
int
zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
nvlist_t ***records, uint_t *numrecords)
{
uint64_t reclen;
nvlist_t *nv;
int i;
while (bytes_read > sizeof (reclen)) {
/* get length of packed record (stored as little endian) */
for (i = 0, reclen = 0; i < sizeof (reclen); i++)
reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i);
if (bytes_read < sizeof (reclen) + reclen)
break;
/* unpack record */
if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0)
return (ENOMEM);
bytes_read -= sizeof (reclen) + reclen;
buf += sizeof (reclen) + reclen;
/* add record to nvlist array */
(*numrecords)++;
if (ISP2(*numrecords + 1)) {
*records = realloc(*records,
*numrecords * 2 * sizeof (nvlist_t *));
}
(*records)[*numrecords - 1] = nv;
}
*leftover = bytes_read;
return (0);
}
#define HIS_BUF_LEN (128*1024)
/*
* Retrieve the command history of a pool.
*/
int
zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp)
{
char buf[HIS_BUF_LEN];
uint64_t off = 0;
nvlist_t **records = NULL;
uint_t numrecords = 0;
int err, i;
do {
uint64_t bytes_read = sizeof (buf);
uint64_t leftover;
if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0)
break;
/* if nothing else was read in, we're at EOF, just return */
if (!bytes_read)
break;
if ((err = zpool_history_unpack(buf, bytes_read,
&leftover, &records, &numrecords)) != 0)
break;
off -= leftover;
/* CONSTCOND */
} while (1);
if (!err) {
verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0);
verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD,
records, numrecords) == 0);
}
for (i = 0; i < numrecords; i++)
nvlist_free(records[i]);
free(records);
return (err);
}
void
zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
char *pathname, size_t len)
{
zfs_cmd_t zc = { 0 };
boolean_t mounted = B_FALSE;
char *mntpnt = NULL;
char dsname[MAXNAMELEN];
if (dsobj == 0) {