type
stringclasses 5
values | content
stringlengths 9
163k
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|---|---|
defines
|
#define ROMSTAGE_RAM_STACK_SIZE 0x5000
|
functions
|
void reset_system(void)
{
hard_reset();
halt();
}
|
functions
|
long choose_top_of_stack(void)
{
unsigned long stack_top;
/* cbmem_add() does a find() before add(). */
stack_top = (unsigned long)cbmem_add(CBMEM_ID_ROMSTAGE_RAM_STACK,
ROMSTAGE_RAM_STACK_SIZE);
stack_top += ROMSTAGE_RAM_STACK_SIZE;
return stack_top;
}
|
functions
|
asmlinkage romstage_main(unsigned long bist)
{
int i;
void *romstage_stack_after_car;
const int num_guards = 4;
const u32 stack_guard = 0xdeadbeef;
u32 *stack_base = (void *)(CONFIG_DCACHE_RAM_BASE +
CONFIG_DCACHE_RAM_SIZE -
CONFIG_DCACHE_RAM_ROMSTAGE_STACK_SIZE);
printk(BIOS_DEBUG, "Setting up stack guards.\n");
for (i = 0; i < num_guards; i++)
stack_base[i] = stack_guard;
mainboard_romstage_entry(bist);
/* Check the stack. */
for (i = 0; i < num_guards; i++) {
if (stack_base[i] == stack_guard)
continue;
printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n");
}
|
functions
|
void romstage_common(const struct romstage_params *params)
{
int boot_mode;
int wake_from_s3;
struct romstage_handoff *handoff;
timestamp_init(get_initial_timestamp());
timestamp_add_now(TS_START_ROMSTAGE);
if (params->bist == 0)
enable_lapic();
wake_from_s3 = early_pch_init(params->gpio_map, params->rcba_config);
#if CONFIG_EC_GOOGLE_CHROMEEC
/* Ensure the EC is in the right mode for recovery */
google_chromeec_early_init();
#endif
/* Halt if there was a built in self test failure */
report_bist_failure(params->bist);
/* Perform some early chipset initialization required
* before RAM initialization can work
*/
haswell_early_initialization(HASWELL_MOBILE);
printk(BIOS_DEBUG, "Back from haswell_early_initialization()\n");
if (wake_from_s3) {
#if CONFIG_HAVE_ACPI_RESUME
printk(BIOS_DEBUG, "Resume from S3 detected.\n");
#else
printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
wake_from_s3 = 0;
#endif
}
|
functions
|
void prepare_for_resume(struct romstage_handoff *handoff)
{
/* Only need to save memory when ramstage isn't relocatable. */
#if !CONFIG_RELOCATABLE_RAMSTAGE
#if CONFIG_HAVE_ACPI_RESUME
/* Back up the OS-controlled memory where ramstage will be loaded. */
if (handoff != NULL && handoff->s3_resume) {
void *src = (void *)CONFIG_RAMBASE;
void *dest = cbmem_find(CBMEM_ID_RESUME);
if (dest != NULL)
memcpy(dest, src, HIGH_MEMORY_SAVE);
}
|
functions
|
void romstage_after_car(void)
{
struct romstage_handoff *handoff;
handoff = romstage_handoff_find_or_add();
prepare_for_resume(handoff);
/* Load the ramstage. */
copy_and_run();
}
|
functions
|
void stage_cache_external_region(void **base, size_t *size)
{
/* The ramstage cache lives in the TSEG region at RESERVED_SMM_OFFSET.
* The top of ram is defined to be the TSEG base address. */
*size = RESERVED_SMM_SIZE;
*base = (void *)((uint32_t)cbmem_top() + RESERVED_SMM_OFFSET);
}
|
functions
|
void ramstage_cache_invalid(void)
{
#if CONFIG_RESET_ON_INVALID_RAMSTAGE_CACHE
reset_system();
#endif
}
|
structs
|
struct WMcursor {
int unused;
};
|
functions
|
void VGL_FreeWMCursor(_THIS, WMcursor *cursor)
{
return;
}
|
functions
|
int VGL_ShowWMCursor(_THIS, WMcursor *cursor)
{
return(0);
}
|
functions
|
void VGL_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
SDL_PrivateMouseMotion(0, 0, x, y);
}
|
includes
|
#include <errno.h>
|
includes
|
#include <stdlib.h>
|
includes
|
#include <string.h>
|
includes
|
#include <sys/stat.h>
|
includes
|
#include <unistd.h>
|
functions
|
bool unit_has_name(Unit *u, const char *name) {
assert(u);
assert(name);
return !!set_get(u->names, (char*) name);
}
|
functions
|
void unit_init(Unit *u) {
CGroupContext *cc;
ExecContext *ec;
KillContext *kc;
assert(u);
assert(u->manager);
assert(u->type >= 0);
cc = unit_get_cgroup_context(u);
if (cc) {
cgroup_context_init(cc);
/* Copy in the manager defaults into the cgroup
* context, _before_ the rest of the settings have
* been initialized */
cc->cpu_accounting = u->manager->default_cpu_accounting;
cc->blockio_accounting = u->manager->default_blockio_accounting;
cc->memory_accounting = u->manager->default_memory_accounting;
cc->tasks_accounting = u->manager->default_tasks_accounting;
}
|
functions
|
int unit_add_name(Unit *u, const char *text) {
_cleanup_free_ char *s = NULL, *i = NULL;
UnitType t;
int r;
assert(u);
assert(text);
if (unit_name_is_valid(text, UNIT_NAME_TEMPLATE)) {
if (!u->instance)
return -EINVAL;
r = unit_name_replace_instance(text, u->instance, &s);
if (r < 0)
return r;
}
|
functions
|
int unit_choose_id(Unit *u, const char *name) {
_cleanup_free_ char *t = NULL;
char *s, *i;
int r;
assert(u);
assert(name);
if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) {
if (!u->instance)
return -EINVAL;
r = unit_name_replace_instance(name, u->instance, &t);
if (r < 0)
return r;
name = t;
}
|
functions
|
int unit_set_description(Unit *u, const char *description) {
char *s;
assert(u);
if (isempty(description))
s = NULL;
else {
s = strdup(description);
if (!s)
return -ENOMEM;
}
|
functions
|
bool unit_check_gc(Unit *u) {
UnitActiveState state;
assert(u);
if (u->job)
return true;
if (u->nop_job)
return true;
state = unit_active_state(u);
/* If the unit is inactive and failed and no job is queued for
* it, then release its runtime resources */
if (UNIT_IS_INACTIVE_OR_FAILED(state) &&
UNIT_VTABLE(u)->release_resources)
UNIT_VTABLE(u)->release_resources(u);
/* But we keep the unit object around for longer when it is
* referenced or configured to not be gc'ed */
if (state != UNIT_INACTIVE)
return true;
if (UNIT_VTABLE(u)->no_gc)
return true;
if (u->no_gc)
return true;
if (u->refs)
return true;
if (UNIT_VTABLE(u)->check_gc)
if (UNIT_VTABLE(u)->check_gc(u))
return true;
return false;
}
|
functions
|
void unit_add_to_load_queue(Unit *u) {
assert(u);
assert(u->type != _UNIT_TYPE_INVALID);
if (u->load_state != UNIT_STUB || u->in_load_queue)
return;
LIST_PREPEND(load_queue, u->manager->load_queue, u);
u->in_load_queue = true;
}
|
functions
|
void unit_add_to_cleanup_queue(Unit *u) {
assert(u);
if (u->in_cleanup_queue)
return;
LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u);
u->in_cleanup_queue = true;
}
|
functions
|
void unit_add_to_gc_queue(Unit *u) {
assert(u);
if (u->in_gc_queue || u->in_cleanup_queue)
return;
if (unit_check_gc(u))
return;
LIST_PREPEND(gc_queue, u->manager->gc_queue, u);
u->in_gc_queue = true;
u->manager->n_in_gc_queue ++;
}
|
functions
|
void unit_add_to_dbus_queue(Unit *u) {
assert(u);
assert(u->type != _UNIT_TYPE_INVALID);
if (u->load_state == UNIT_STUB || u->in_dbus_queue)
return;
/* Shortcut things if nobody cares */
if (sd_bus_track_count(u->manager->subscribed) <= 0 &&
set_isempty(u->manager->private_buses)) {
u->sent_dbus_new_signal = true;
return;
}
|
functions
|
void bidi_set_free(Unit *u, Set *s) {
Iterator i;
Unit *other;
assert(u);
/* Frees the set and makes sure we are dropped from the
* inverse pointers */
SET_FOREACH(other, s, i) {
UnitDependency d;
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
set_remove(other->dependencies[d], u);
unit_add_to_gc_queue(other);
}
|
functions
|
void unit_remove_transient(Unit *u) {
char **i;
assert(u);
if (!u->transient)
return;
if (u->fragment_path)
(void) unlink(u->fragment_path);
STRV_FOREACH(i, u->dropin_paths) {
_cleanup_free_ char *p = NULL;
(void) unlink(*i);
p = dirname_malloc(*i);
if (p)
(void) rmdir(p);
}
|
functions
|
void unit_free_requires_mounts_for(Unit *u) {
char **j;
STRV_FOREACH(j, u->requires_mounts_for) {
char s[strlen(*j) + 1];
PATH_FOREACH_PREFIX_MORE(s, *j) {
char *y;
Set *x;
x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y);
if (!x)
continue;
set_remove(x, u);
if (set_isempty(x)) {
hashmap_remove(u->manager->units_requiring_mounts_for, y);
free(y);
set_free(x);
}
|
functions
|
void unit_done(Unit *u) {
ExecContext *ec;
CGroupContext *cc;
int r;
assert(u);
if (u->type < 0)
return;
if (UNIT_VTABLE(u)->done)
UNIT_VTABLE(u)->done(u);
ec = unit_get_exec_context(u);
if (ec)
exec_context_done(ec);
cc = unit_get_cgroup_context(u);
if (cc)
cgroup_context_done(cc);
r = unit_remove_from_netclass_cgroup(u);
if (r < 0)
log_warning_errno(r, "Unable to remove unit from netclass group: %m");
}
|
functions
|
void unit_free(Unit *u) {
UnitDependency d;
Iterator i;
char *t;
assert(u);
if (u->manager->n_reloading <= 0)
unit_remove_transient(u);
bus_unit_send_removed_signal(u);
unit_done(u);
sd_bus_slot_unref(u->match_bus_slot);
unit_free_requires_mounts_for(u);
SET_FOREACH(t, u->names, i)
hashmap_remove_value(u->manager->units, t, u);
if (u->job) {
Job *j = u->job;
job_uninstall(j);
job_free(j);
}
|
functions
|
UnitActiveState unit_active_state(Unit *u) {
assert(u);
if (u->load_state == UNIT_MERGED)
return unit_active_state(unit_follow_merge(u));
/* After a reload it might happen that a unit is not correctly
* loaded but still has a process around. That's why we won't
* shortcut failed loading to UNIT_INACTIVE_FAILED. */
return UNIT_VTABLE(u)->active_state(u);
}
|
functions
|
int complete_move(Set **s, Set **other) {
int r;
assert(s);
assert(other);
if (!*other)
return 0;
if (*s) {
r = set_move(*s, *other);
if (r < 0)
return r;
}
|
functions
|
int merge_names(Unit *u, Unit *other) {
char *t;
Iterator i;
int r;
assert(u);
assert(other);
r = complete_move(&u->names, &other->names);
if (r < 0)
return r;
set_free_free(other->names);
other->names = NULL;
other->id = NULL;
SET_FOREACH(t, u->names, i)
assert_se(hashmap_replace(u->manager->units, t, u) == 0);
return 0;
}
|
functions
|
int reserve_dependencies(Unit *u, Unit *other, UnitDependency d) {
unsigned n_reserve;
assert(u);
assert(other);
assert(d < _UNIT_DEPENDENCY_MAX);
/*
* If u does not have this dependency set allocated, there is no need
* to reserve anything. In that case other's set will be transferred
* as a whole to u by complete_move().
*/
if (!u->dependencies[d])
return 0;
/* merge_dependencies() will skip a u-on-u dependency */
n_reserve = set_size(other->dependencies[d]) - !!set_get(other->dependencies[d], u);
return set_reserve(u->dependencies[d], n_reserve);
}
|
functions
|
void merge_dependencies(Unit *u, Unit *other, const char *other_id, UnitDependency d) {
Iterator i;
Unit *back;
int r;
assert(u);
assert(other);
assert(d < _UNIT_DEPENDENCY_MAX);
/* Fix backwards pointers */
SET_FOREACH(back, other->dependencies[d], i) {
UnitDependency k;
for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) {
/* Do not add dependencies between u and itself */
if (back == u) {
if (set_remove(back->dependencies[k], other))
maybe_warn_about_dependency(u, other_id, k);
}
|
functions
|
int unit_merge(Unit *u, Unit *other) {
UnitDependency d;
const char *other_id = NULL;
int r;
assert(u);
assert(other);
assert(u->manager == other->manager);
assert(u->type != _UNIT_TYPE_INVALID);
other = unit_follow_merge(other);
if (other == u)
return 0;
if (u->type != other->type)
return -EINVAL;
if (!u->instance != !other->instance)
return -EINVAL;
if (other->load_state != UNIT_STUB &&
other->load_state != UNIT_NOT_FOUND)
return -EEXIST;
if (other->job)
return -EEXIST;
if (other->nop_job)
return -EEXIST;
if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other)))
return -EEXIST;
if (other->id)
other_id = strdupa(other->id);
/* Make reservations to ensure merge_dependencies() won't fail */
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) {
r = reserve_dependencies(u, other, d);
/*
* We don't rollback reservations if we fail. We don't have
* a way to undo reservations. A reservation is not a leak.
*/
if (r < 0)
return r;
}
|
functions
|
int unit_merge_by_name(Unit *u, const char *name) {
Unit *other;
int r;
_cleanup_free_ char *s = NULL;
assert(u);
assert(name);
if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) {
if (!u->instance)
return -EINVAL;
r = unit_name_replace_instance(name, u->instance, &s);
if (r < 0)
return r;
name = s;
}
|
functions
|
int unit_add_exec_dependencies(Unit *u, ExecContext *c) {
int r;
assert(u);
assert(c);
if (c->working_directory) {
r = unit_require_mounts_for(u, c->working_directory);
if (r < 0)
return r;
}
|
functions
|
void unit_dump(Unit *u, FILE *f, const char *prefix) {
char *t, **j;
UnitDependency d;
Iterator i;
const char *prefix2;
char
timestamp1[FORMAT_TIMESTAMP_MAX],
timestamp2[FORMAT_TIMESTAMP_MAX],
timestamp3[FORMAT_TIMESTAMP_MAX],
timestamp4[FORMAT_TIMESTAMP_MAX],
timespan[FORMAT_TIMESPAN_MAX];
Unit *following;
_cleanup_set_free_ Set *following_set = NULL;
int r;
assert(u);
assert(u->type >= 0);
prefix = strempty(prefix);
prefix2 = strjoina(prefix, "\t");
fprintf(f,
"%s-> Unit %s:\n"
"%s\tDescription: %s\n"
"%s\tInstance: %s\n"
"%s\tUnit Load State: %s\n"
"%s\tUnit Active State: %s\n"
"%s\tInactive Exit Timestamp: %s\n"
"%s\tActive Enter Timestamp: %s\n"
"%s\tActive Exit Timestamp: %s\n"
"%s\tInactive Enter Timestamp: %s\n"
"%s\tGC Check Good: %s\n"
"%s\tNeed Daemon Reload: %s\n"
"%s\tTransient: %s\n"
"%s\tSlice: %s\n"
"%s\tCGroup: %s\n"
"%s\tCGroup realized: %s\n"
"%s\tCGroup mask: 0x%x\n"
"%s\tCGroup members mask: 0x%x\n",
prefix, u->id,
prefix, unit_description(u),
prefix, strna(u->instance),
prefix, unit_load_state_to_string(u->load_state),
prefix, unit_active_state_to_string(unit_active_state(u)),
prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)),
prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)),
prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)),
prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)),
prefix, yes_no(unit_check_gc(u)),
prefix, yes_no(unit_need_daemon_reload(u)),
prefix, yes_no(u->transient),
prefix, strna(unit_slice_name(u)),
prefix, strna(u->cgroup_path),
prefix, yes_no(u->cgroup_realized),
prefix, u->cgroup_realized_mask,
prefix, u->cgroup_members_mask);
SET_FOREACH(t, u->names, i)
fprintf(f, "%s\tName: %s\n", prefix, t);
STRV_FOREACH(j, u->documentation)
fprintf(f, "%s\tDocumentation: %s\n", prefix, *j);
following = unit_following(u);
if (following)
fprintf(f, "%s\tFollowing: %s\n", prefix, following->id);
r = unit_following_set(u, &following_set);
if (r >= 0) {
Unit *other;
SET_FOREACH(other, following_set, i)
fprintf(f, "%s\tFollowing Set Member: %s\n", prefix, other->id);
}
|
functions
|
int unit_load_fragment_and_dropin(Unit *u) {
int r;
assert(u);
/* Load a .{service,socket,...}
|
functions
|
int unit_load_fragment_and_dropin_optional(Unit *u) {
int r;
assert(u);
/* Same as unit_load_fragment_and_dropin(), but whether
* something can be loaded or not doesn't matter. */
/* Load a .service file */
r = unit_load_fragment(u);
if (r < 0)
return r;
if (u->load_state == UNIT_STUB)
u->load_state = UNIT_LOADED;
/* Load drop-in directory data */
r = unit_load_dropin(unit_follow_merge(u));
if (r < 0)
return r;
return 0;
}
|
functions
|
int unit_add_default_target_dependency(Unit *u, Unit *target) {
assert(u);
assert(target);
if (target->type != UNIT_TARGET)
return 0;
/* Only add the dependency if both units are loaded, so that
* that loop check below is reliable */
if (u->load_state != UNIT_LOADED ||
target->load_state != UNIT_LOADED)
return 0;
/* If either side wants no automatic dependencies, then let's
* skip this */
if (!u->default_dependencies ||
!target->default_dependencies)
return 0;
/* Don't create loops */
if (set_get(target->dependencies[UNIT_BEFORE], u))
return 0;
return unit_add_dependency(target, UNIT_AFTER, u, true);
}
|
functions
|
int unit_add_target_dependencies(Unit *u) {
static const UnitDependency deps[] = {
UNIT_REQUIRED_BY,
UNIT_REQUISITE_OF,
UNIT_WANTED_BY,
UNIT_BOUND_BY
}
|
functions
|
int unit_add_slice_dependencies(Unit *u) {
assert(u);
if (!UNIT_HAS_CGROUP_CONTEXT(u))
return 0;
if (UNIT_ISSET(u->slice))
return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT_DEREF(u->slice), true);
if (unit_has_name(u, SPECIAL_ROOT_SLICE))
return 0;
return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_ROOT_SLICE, NULL, true);
}
|
functions
|
int unit_add_mount_dependencies(Unit *u) {
char **i;
int r;
assert(u);
STRV_FOREACH(i, u->requires_mounts_for) {
char prefix[strlen(*i) + 1];
PATH_FOREACH_PREFIX_MORE(prefix, *i) {
_cleanup_free_ char *p = NULL;
Unit *m;
r = unit_name_from_path(prefix, ".mount", &p);
if (r < 0)
return r;
m = manager_get_unit(u->manager, p);
if (!m) {
/* Make sure to load the mount unit if
* it exists. If so the dependencies
* on this unit will be added later
* during the loading of the mount
* unit. */
(void) manager_load_unit_prepare(u->manager, p, NULL, NULL, &m);
continue;
}
|
functions
|
int unit_add_startup_units(Unit *u) {
CGroupContext *c;
int r;
c = unit_get_cgroup_context(u);
if (!c)
return 0;
if (c->startup_cpu_shares == CGROUP_CPU_SHARES_INVALID &&
c->startup_blockio_weight == CGROUP_BLKIO_WEIGHT_INVALID)
return 0;
r = set_ensure_allocated(&u->manager->startup_units, NULL);
if (r < 0)
return r;
return set_put(u->manager->startup_units, u);
}
|
functions
|
int unit_load(Unit *u) {
int r;
assert(u);
if (u->in_load_queue) {
LIST_REMOVE(load_queue, u->manager->load_queue, u);
u->in_load_queue = false;
}
|
functions
|
bool unit_condition_test(Unit *u) {
assert(u);
dual_timestamp_get(&u->condition_timestamp);
u->condition_result = unit_condition_test_list(u, u->conditions, condition_type_to_string);
return u->condition_result;
}
|
functions
|
bool unit_assert_test(Unit *u) {
assert(u);
dual_timestamp_get(&u->assert_timestamp);
u->assert_result = unit_condition_test_list(u, u->asserts, assert_type_to_string);
return u->assert_result;
}
|
functions
|
void unit_status_print_starting_stopping(Unit *u, JobType t) {
const char *format;
assert(u);
format = unit_get_status_message_format(u, t);
DISABLE_WARNING_FORMAT_NONLITERAL;
unit_status_printf(u, "", format);
REENABLE_WARNING;
}
|
functions
|
void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) {
const char *format;
char buf[LINE_MAX];
sd_id128_t mid;
assert(u);
if (t != JOB_START && t != JOB_STOP && t != JOB_RELOAD)
return;
if (log_on_console())
return;
/* We log status messages for all units and all operations. */
format = unit_get_status_message_format(u, t);
DISABLE_WARNING_FORMAT_NONLITERAL;
snprintf(buf, sizeof(buf), format, unit_description(u));
REENABLE_WARNING;
mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING :
t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING :
SD_MESSAGE_UNIT_RELOADING;
/* Note that we deliberately use LOG_MESSAGE() instead of
* LOG_UNIT_MESSAGE() here, since this is supposed to mimic
* closely what is written to screen using the status output,
* which is supposed the highest level, friendliest output
* possible, which means we should avoid the low-level unit
* name. */
log_struct(LOG_INFO,
LOG_MESSAGE_ID(mid),
LOG_UNIT_ID(u),
LOG_MESSAGE("%s", buf),
NULL);
}
|
functions
|
void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t) {
unit_status_log_starting_stopping_reloading(u, t);
/* Reload status messages have traditionally not been printed to console. */
if (t != JOB_RELOAD)
unit_status_print_starting_stopping(u, t);
}
|
functions
|
int unit_start(Unit *u) {
UnitActiveState state;
Unit *following;
assert(u);
/* Units that aren't loaded cannot be started */
if (u->load_state != UNIT_LOADED)
return -EINVAL;
/* If this is already started, then this will succeed. Note
* that this will even succeed if this unit is not startable
* by the user. This is relied on to detect when we need to
* wait for units and when waiting is finished. */
state = unit_active_state(u);
if (UNIT_IS_ACTIVE_OR_RELOADING(state))
return -EALREADY;
/* If the conditions failed, don't do anything at all. If we
* already are activating this call might still be useful to
* speed up activation in case there is some hold-off time,
* but we don't want to recheck the condition in that case. */
if (state != UNIT_ACTIVATING &&
!unit_condition_test(u)) {
log_unit_debug(u, "Starting requested but condition failed. Not starting unit.");
return -EALREADY;
}
|
functions
|
bool unit_can_start(Unit *u) {
assert(u);
if (u->load_state != UNIT_LOADED)
return false;
if (!unit_supported(u))
return false;
return !!UNIT_VTABLE(u)->start;
}
|
functions
|
bool unit_can_isolate(Unit *u) {
assert(u);
return unit_can_start(u) &&
u->allow_isolate;
}
|
functions
|
int unit_stop(Unit *u) {
UnitActiveState state;
Unit *following;
assert(u);
state = unit_active_state(u);
if (UNIT_IS_INACTIVE_OR_FAILED(state))
return -EALREADY;
following = unit_following(u);
if (following) {
log_unit_debug(u, "Redirecting stop request from %s to %s.", u->id, following->id);
return unit_stop(following);
}
|
functions
|
int unit_reload(Unit *u) {
UnitActiveState state;
Unit *following;
assert(u);
if (u->load_state != UNIT_LOADED)
return -EINVAL;
if (!unit_can_reload(u))
return -EBADR;
state = unit_active_state(u);
if (state == UNIT_RELOADING)
return -EALREADY;
if (state != UNIT_ACTIVE) {
log_unit_warning(u, "Unit cannot be reloaded because it is inactive.");
return -ENOEXEC;
}
|
functions
|
bool unit_can_reload(Unit *u) {
assert(u);
if (!UNIT_VTABLE(u)->reload)
return false;
if (!UNIT_VTABLE(u)->can_reload)
return true;
return UNIT_VTABLE(u)->can_reload(u);
}
|
functions
|
void unit_check_unneeded(Unit *u) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
static const UnitDependency needed_dependencies[] = {
UNIT_REQUIRED_BY,
UNIT_REQUISITE_OF,
UNIT_WANTED_BY,
UNIT_BOUND_BY,
}
|
functions
|
void unit_check_binds_to(Unit *u) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
bool stop = false;
Unit *other;
Iterator i;
int r;
assert(u);
if (u->job)
return;
if (unit_active_state(u) != UNIT_ACTIVE)
return;
SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i) {
if (other->job)
continue;
if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other)))
continue;
stop = true;
break;
}
|
functions
|
void retroactively_start_dependencies(Unit *u) {
Iterator i;
Unit *other;
assert(u);
assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)));
SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i)
if (!set_get(u->dependencies[UNIT_AFTER], other) &&
!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL);
SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i)
if (!set_get(u->dependencies[UNIT_AFTER], other) &&
!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, NULL, NULL);
SET_FOREACH(other, u->dependencies[UNIT_WANTS], i)
if (!set_get(u->dependencies[UNIT_AFTER], other) &&
!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
manager_add_job(u->manager, JOB_START, other, JOB_FAIL, NULL, NULL);
SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL);
SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL);
}
|
functions
|
void retroactively_stop_dependencies(Unit *u) {
Iterator i;
Unit *other;
assert(u);
assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u)));
/* Pull down units which are bound to us recursively if enabled */
SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, NULL, NULL);
}
|
functions
|
void check_unneeded_dependencies(Unit *u) {
Iterator i;
Unit *other;
assert(u);
assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u)));
/* Garbage collect services that might not be needed anymore, if enabled */
SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_unneeded(other);
SET_FOREACH(other, u->dependencies[UNIT_WANTS], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_unneeded(other);
SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_unneeded(other);
SET_FOREACH(other, u->dependencies[UNIT_BINDS_TO], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_unneeded(other);
}
|
functions
|
void unit_start_on_failure(Unit *u) {
Unit *other;
Iterator i;
assert(u);
if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0)
return;
log_unit_info(u, "Triggering OnFailure= dependencies.");
SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) {
int r;
r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, NULL, NULL);
if (r < 0)
log_unit_error_errno(u, r, "Failed to enqueue OnFailure= job: %m");
}
|
functions
|
void unit_trigger_notify(Unit *u) {
Unit *other;
Iterator i;
assert(u);
SET_FOREACH(other, u->dependencies[UNIT_TRIGGERED_BY], i)
if (UNIT_VTABLE(other)->trigger_notify)
UNIT_VTABLE(other)->trigger_notify(other, u);
}
|
functions
|
void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) {
Manager *m;
bool unexpected;
assert(u);
assert(os < _UNIT_ACTIVE_STATE_MAX);
assert(ns < _UNIT_ACTIVE_STATE_MAX);
/* Note that this is called for all low-level state changes,
* even if they might map to the same high-level
* UnitActiveState! That means that ns == os is an expected
* behavior here. For example: if a mount point is remounted
* this function will be called too! */
m = u->manager;
/* Update timestamps for state changes */
if (m->n_reloading <= 0) {
dual_timestamp ts;
dual_timestamp_get(&ts);
if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns))
u->inactive_exit_timestamp = ts;
else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns))
u->inactive_enter_timestamp = ts;
if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
u->active_enter_timestamp = ts;
else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
u->active_exit_timestamp = ts;
}
|
functions
|
else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) {
unexpected = true;
if (UNIT_IS_INACTIVE_OR_FAILED(ns))
job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true);
}
|
functions
|
else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) {
unexpected = true;
if (UNIT_IS_INACTIVE_OR_FAILED(ns))
job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE, true);
}
|
functions
|
else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) {
unexpected = true;
job_finish_and_invalidate(u->job, JOB_FAILED, true);
}
|
functions
|
int unit_watch_pid(Unit *u, pid_t pid) {
int q, r;
assert(u);
assert(pid >= 1);
/* Watch a specific PID. We only support one or two units
* watching each PID for now, not more. */
r = set_ensure_allocated(&u->pids, NULL);
if (r < 0)
return r;
r = hashmap_ensure_allocated(&u->manager->watch_pids1, NULL);
if (r < 0)
return r;
r = hashmap_put(u->manager->watch_pids1, PID_TO_PTR(pid), u);
if (r == -EEXIST) {
r = hashmap_ensure_allocated(&u->manager->watch_pids2, NULL);
if (r < 0)
return r;
r = hashmap_put(u->manager->watch_pids2, PID_TO_PTR(pid), u);
}
|
functions
|
void unit_unwatch_pid(Unit *u, pid_t pid) {
assert(u);
assert(pid >= 1);
(void) hashmap_remove_value(u->manager->watch_pids1, PID_TO_PTR(pid), u);
(void) hashmap_remove_value(u->manager->watch_pids2, PID_TO_PTR(pid), u);
(void) set_remove(u->pids, PID_TO_PTR(pid));
}
|
functions
|
void unit_unwatch_all_pids(Unit *u) {
assert(u);
while (!set_isempty(u->pids))
unit_unwatch_pid(u, PTR_TO_PID(set_first(u->pids)));
u->pids = set_free(u->pids);
}
|
functions
|
void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2) {
Iterator i;
void *e;
assert(u);
/* Cleans dead PIDs from our list */
SET_FOREACH(e, u->pids, i) {
pid_t pid = PTR_TO_PID(e);
if (pid == except1 || pid == except2)
continue;
if (!pid_is_unwaited(pid))
unit_unwatch_pid(u, pid);
}
|
functions
|
bool unit_job_is_applicable(Unit *u, JobType j) {
assert(u);
assert(j >= 0 && j < _JOB_TYPE_MAX);
switch (j) {
case JOB_VERIFY_ACTIVE:
case JOB_START:
case JOB_STOP:
case JOB_NOP:
return true;
case JOB_RESTART:
case JOB_TRY_RESTART:
return unit_can_start(u);
case JOB_RELOAD:
return unit_can_reload(u);
case JOB_RELOAD_OR_START:
return unit_can_reload(u) && unit_can_start(u);
default:
assert_not_reached("Invalid job type");
}
|
functions
|
void maybe_warn_about_dependency(Unit *u, const char *other, UnitDependency dependency) {
assert(u);
/* Only warn about some unit types */
if (!IN_SET(dependency, UNIT_CONFLICTS, UNIT_CONFLICTED_BY, UNIT_BEFORE, UNIT_AFTER, UNIT_ON_FAILURE, UNIT_TRIGGERS, UNIT_TRIGGERED_BY))
return;
if (streq_ptr(u->id, other))
log_unit_warning(u, "Dependency %s=%s dropped", unit_dependency_to_string(dependency), u->id);
else
log_unit_warning(u, "Dependency %s=%s dropped, merged into %s", unit_dependency_to_string(dependency), strna(other), u->id);
}
|
functions
|
int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
[UNIT_REQUIRES] = UNIT_REQUIRED_BY,
[UNIT_WANTS] = UNIT_WANTED_BY,
[UNIT_REQUISITE] = UNIT_REQUISITE_OF,
[UNIT_BINDS_TO] = UNIT_BOUND_BY,
[UNIT_PART_OF] = UNIT_CONSISTS_OF,
[UNIT_REQUIRED_BY] = UNIT_REQUIRES,
[UNIT_REQUISITE_OF] = UNIT_REQUISITE,
[UNIT_WANTED_BY] = UNIT_WANTS,
[UNIT_BOUND_BY] = UNIT_BINDS_TO,
[UNIT_CONSISTS_OF] = UNIT_PART_OF,
[UNIT_CONFLICTS] = UNIT_CONFLICTED_BY,
[UNIT_CONFLICTED_BY] = UNIT_CONFLICTS,
[UNIT_BEFORE] = UNIT_AFTER,
[UNIT_AFTER] = UNIT_BEFORE,
[UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID,
[UNIT_REFERENCES] = UNIT_REFERENCED_BY,
[UNIT_REFERENCED_BY] = UNIT_REFERENCES,
[UNIT_TRIGGERS] = UNIT_TRIGGERED_BY,
[UNIT_TRIGGERED_BY] = UNIT_TRIGGERS,
[UNIT_PROPAGATES_RELOAD_TO] = UNIT_RELOAD_PROPAGATED_FROM,
[UNIT_RELOAD_PROPAGATED_FROM] = UNIT_PROPAGATES_RELOAD_TO,
[UNIT_JOINS_NAMESPACE_OF] = UNIT_JOINS_NAMESPACE_OF,
}
|
functions
|
int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) {
int r;
assert(u);
r = unit_add_dependency(u, d, other, add_reference);
if (r < 0)
return r;
return unit_add_dependency(u, e, other, add_reference);
}
|
functions
|
int resolve_template(Unit *u, const char *name, const char*path, char **buf, const char **ret) {
int r;
assert(u);
assert(name || path);
assert(buf);
assert(ret);
if (!name)
name = basename(path);
if (!unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) {
*buf = NULL;
*ret = name;
return 0;
}
|
functions
|
int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
_cleanup_free_ char *buf = NULL;
Unit *other;
int r;
assert(u);
assert(name || path);
r = resolve_template(u, name, path, &buf, &name);
if (r < 0)
return r;
r = manager_load_unit(u->manager, name, path, NULL, &other);
if (r < 0)
return r;
return unit_add_dependency(u, d, other, add_reference);
}
|
functions
|
int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
_cleanup_free_ char *buf = NULL;
Unit *other;
int r;
assert(u);
assert(name || path);
r = resolve_template(u, name, path, &buf, &name);
if (r < 0)
return r;
r = manager_load_unit(u->manager, name, path, NULL, &other);
if (r < 0)
return r;
return unit_add_two_dependencies(u, d, e, other, add_reference);
}
|
functions
|
int set_unit_path(const char *p) {
/* This is mostly for debug purposes */
if (setenv("SYSTEMD_UNIT_PATH", p, 1) < 0)
return -errno;
return 0;
}
|
functions
|
int unit_set_slice(Unit *u, Unit *slice) {
assert(u);
assert(slice);
/* Sets the unit slice if it has not been set before. Is extra
* careful, to only allow this for units that actually have a
* cgroup context. Also, we don't allow to set this for slices
* (since the parent slice is derived from the name). Make
* sure the unit we set is actually a slice. */
if (!UNIT_HAS_CGROUP_CONTEXT(u))
return -EOPNOTSUPP;
if (u->type == UNIT_SLICE)
return -EINVAL;
if (unit_active_state(u) != UNIT_INACTIVE)
return -EBUSY;
if (slice->type != UNIT_SLICE)
return -EINVAL;
if (unit_has_name(u, SPECIAL_INIT_SCOPE) &&
!unit_has_name(slice, SPECIAL_ROOT_SLICE))
return -EPERM;
if (UNIT_DEREF(u->slice) == slice)
return 0;
if (UNIT_ISSET(u->slice))
return -EBUSY;
unit_ref_set(&u->slice, slice);
return 1;
}
|
functions
|
int unit_set_default_slice(Unit *u) {
_cleanup_free_ char *b = NULL;
const char *slice_name;
Unit *slice;
int r;
assert(u);
if (UNIT_ISSET(u->slice))
return 0;
if (u->instance) {
_cleanup_free_ char *prefix = NULL, *escaped = NULL;
/* Implicitly place all instantiated units in their
* own per-template slice */
r = unit_name_to_prefix(u->id, &prefix);
if (r < 0)
return r;
/* The prefix is already escaped, but it might include
* "-" which has a special meaning for slice units,
* hence escape it here extra. */
escaped = unit_name_escape(prefix);
if (!escaped)
return -ENOMEM;
if (u->manager->running_as == MANAGER_SYSTEM)
b = strjoin("system-", escaped, ".slice", NULL);
else
b = strappend(escaped, ".slice");
if (!b)
return -ENOMEM;
slice_name = b;
}
|
functions
|
int unit_load_related_unit(Unit *u, const char *type, Unit **_found) {
_cleanup_free_ char *t = NULL;
int r;
assert(u);
assert(type);
assert(_found);
r = unit_name_change_suffix(u->id, type, &t);
if (r < 0)
return r;
if (unit_has_name(u, t))
return -EINVAL;
r = manager_load_unit(u->manager, t, NULL, NULL, _found);
assert(r < 0 || *_found != u);
return r;
}
|
functions
|
int signal_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *name, *old_owner, *new_owner;
Unit *u = userdata;
int r;
assert(message);
assert(u);
r = sd_bus_message_read(message, "sss", &name, &old_owner, &new_owner);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
|
functions
|
int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name) {
const char *match;
assert(u);
assert(bus);
assert(name);
if (u->match_bus_slot)
return -EBUSY;
match = strjoina("type='signal',"
"sender='org.freedesktop.DBus',"
"path='/org/freedesktop/DBus',"
"interface='org.freedesktop.DBus',"
"member='NameOwnerChanged',"
"arg0='", name, "'",
NULL);
return sd_bus_add_match(bus, &u->match_bus_slot, match, signal_name_owner_changed, u);
}
|
functions
|
int unit_watch_bus_name(Unit *u, const char *name) {
int r;
assert(u);
assert(name);
/* Watch a specific name on the bus. We only support one unit
* watching each name for now. */
if (u->manager->api_bus) {
/* If the bus is already available, install the match directly.
* Otherwise, just put the name in the list. bus_setup_api() will take care later. */
r = unit_install_bus_match(u, u->manager->api_bus, name);
if (r < 0)
return log_warning_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name);
}
|
functions
|
void unit_unwatch_bus_name(Unit *u, const char *name) {
assert(u);
assert(name);
hashmap_remove_value(u->manager->watch_bus, name, u);
u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot);
}
|
functions
|
bool unit_can_serialize(Unit *u) {
assert(u);
return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
}
|
functions
|
int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) {
int r;
assert(u);
assert(f);
assert(fds);
if (unit_can_serialize(u)) {
ExecRuntime *rt;
r = UNIT_VTABLE(u)->serialize(u, f, fds);
if (r < 0)
return r;
rt = unit_get_exec_runtime(u);
if (rt) {
r = exec_runtime_serialize(u, rt, f, fds);
if (r < 0)
return r;
}
|
functions
|
int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) {
assert(u);
assert(f);
assert(key);
if (!value)
return 0;
fputs(key, f);
fputc('=', f);
fputs(value, f);
fputc('\n', f);
return 1;
}
|
functions
|
int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value) {
_cleanup_free_ char *c = NULL;
assert(u);
assert(f);
assert(key);
if (!value)
return 0;
c = cescape(value);
if (!c)
return -ENOMEM;
fputs(key, f);
fputc('=', f);
fputs(c, f);
fputc('\n', f);
return 1;
}
|
functions
|
int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd) {
int copy;
assert(u);
assert(f);
assert(key);
if (fd < 0)
return 0;
copy = fdset_put_dup(fds, fd);
if (copy < 0)
return copy;
fprintf(f, "%s=%i\n", key, copy);
return 1;
}
|
functions
|
void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
va_list ap;
assert(u);
assert(f);
assert(key);
assert(format);
fputs(key, f);
fputc('=', f);
va_start(ap, format);
vfprintf(f, format, ap);
va_end(ap);
fputc('\n', f);
}
|
functions
|
int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
ExecRuntime **rt = NULL;
size_t offset;
int r;
assert(u);
assert(f);
assert(fds);
offset = UNIT_VTABLE(u)->exec_runtime_offset;
if (offset > 0)
rt = (ExecRuntime**) ((uint8_t*) u + offset);
for (;;) {
char line[LINE_MAX], *l, *v;
size_t k;
if (!fgets(line, sizeof(line), f)) {
if (feof(f))
return 0;
return -errno;
}
|
functions
|
int unit_add_node_link(Unit *u, const char *what, bool wants) {
Unit *device;
_cleanup_free_ char *e = NULL;
int r;
assert(u);
/* Adds in links to the device node that this unit is based on */
if (isempty(what))
return 0;
if (!is_device_path(what))
return 0;
/* When device units aren't supported (such as in a
* container), don't create dependencies on them. */
if (!unit_type_supported(UNIT_DEVICE))
return 0;
r = unit_name_from_path(what, ".device", &e);
if (r < 0)
return r;
r = manager_load_unit(u->manager, e, NULL, NULL, &device);
if (r < 0)
return r;
r = unit_add_two_dependencies(u, UNIT_AFTER, u->manager->running_as == MANAGER_SYSTEM ? UNIT_BINDS_TO : UNIT_WANTS, device, true);
if (r < 0)
return r;
if (wants) {
r = unit_add_dependency(device, UNIT_WANTS, u, false);
if (r < 0)
return r;
}
|
functions
|
int unit_coldplug(Unit *u) {
int r = 0, q = 0;
assert(u);
/* Make sure we don't enter a loop, when coldplugging
* recursively. */
if (u->coldplugged)
return 0;
u->coldplugged = true;
if (UNIT_VTABLE(u)->coldplug)
r = UNIT_VTABLE(u)->coldplug(u);
if (u->job)
q = job_coldplug(u->job);
if (r < 0)
return r;
if (q < 0)
return q;
return 0;
}
|
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