#include "bus-errors.h"
#include "dbus.h"
#include "execute.h"
+#include "virt.h"
const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = &service_vtable,
bool unit_check_gc(Unit *u) {
assert(u);
- if (u->load_state == UNIT_STUB)
- return true;
-
if (UNIT_VTABLE(u)->no_gc)
return true;
return;
/* Shortcut things if nobody cares */
- if (set_isempty(u->manager->subscribed)) {
+ if (sd_bus_track_count(u->manager->subscribed) <= 0 &&
+ set_isempty(u->manager->private_buses)) {
u->sent_dbus_new_signal = true;
return;
}
free(u->cgroup_path);
}
+ set_remove(u->manager->failed_units, u);
+
free(u->description);
strv_free(u->documentation);
free(u->fragment_path);
set_free_free(u->names);
+ unit_unwatch_all_pids(u);
+
condition_free_list(u->conditions);
unit_ref_unset(&u->slice);
prefix, strna(unit_slice_name(u)),
prefix, strna(u->cgroup_path),
prefix, yes_no(u->cgroup_realized),
- prefix, u->cgroup_mask,
+ prefix, u->cgroup_realized_mask,
prefix, u->cgroup_members_mask);
SET_FOREACH(t, u->names, i)
return unit_add_dependency(target, UNIT_AFTER, u, true);
}
-static int unit_add_default_dependencies(Unit *u) {
+static int unit_add_target_dependencies(Unit *u) {
static const UnitDependency deps[] = {
UNIT_REQUIRED_BY,
Unit *target;
Iterator i;
- int r;
unsigned k;
+ int r = 0;
assert(u);
return r;
}
- if (u->default_dependencies && unit_get_cgroup_context(u)) {
- if (UNIT_ISSET(u->slice))
- r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true);
- else
- r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true);
+ return r;
+}
- if (r < 0)
- return r;
- }
+static int unit_add_slice_dependencies(Unit *u) {
+ assert(u);
- return 0;
+ if (!unit_get_cgroup_context(u))
+ return 0;
+
+ if (UNIT_ISSET(u->slice))
+ return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, UNIT_DEREF(u->slice), true);
+
+ return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true);
}
-static int unit_add_mount_links(Unit *u) {
+static int unit_add_mount_dependencies(Unit *u) {
char **i;
int r;
if (u->load_state == UNIT_LOADED) {
- if (u->default_dependencies) {
- r = unit_add_default_dependencies(u);
- if (r < 0)
- goto fail;
- }
-
- unit_update_member_masks(u);
-
- r = unit_add_mount_links(u);
+ r = unit_add_target_dependencies(u);
if (r < 0)
goto fail;
- if (u->on_failure_job_mode == JOB_ISOLATE &&
- set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) {
+ r = unit_add_slice_dependencies(u);
+ if (r < 0)
+ goto fail;
- log_error_unit(u->id,
- "More than one OnFailure= dependencies specified for %s but OnFailureJobMode=isolate set. Refusing.", u->id);
+ r = unit_add_mount_dependencies(u);
+ if (r < 0)
+ goto fail;
+ if (u->on_failure_job_mode == JOB_ISOLATE && set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) {
+ log_error_unit(u->id, "More than one OnFailure= dependencies specified for %s but OnFailureJobMode=isolate set. Refusing.", u->id);
r = -EINVAL;
goto fail;
}
+
+ unit_update_cgroup_members_masks(u);
}
assert((u->load_state != UNIT_MERGED) == !u->merged_into);
return NULL;
}
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
static void unit_status_print_starting_stopping(Unit *u, JobType t) {
const char *format;
if (!format)
return;
+ DISABLE_WARNING_FORMAT_NONLITERAL;
unit_status_printf(u, "", format);
+ REENABLE_WARNING;
}
-#pragma GCC diagnostic pop
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) {
const char *format;
char buf[LINE_MAX];
if (!format)
return;
+ DISABLE_WARNING_FORMAT_NONLITERAL;
snprintf(buf, sizeof(buf), format, unit_description(u));
char_array_0(buf);
+ REENABLE_WARNING;
mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING :
t == JOB_STOP ? SD_MESSAGE_UNIT_STOPPING :
"MESSAGE=%s", buf,
NULL);
}
-#pragma GCC diagnostic pop
/* Errors:
* -EBADR: This unit type does not support starting.
m = u->manager;
+ /* Update timestamps for state changes */
if (m->n_reloading <= 0) {
dual_timestamp ts;
u->active_exit_timestamp = ts;
}
+ /* Keep track of failed of units */
+ if (ns == UNIT_FAILED && os != UNIT_FAILED)
+ set_put(u->manager->failed_units, u);
+ else if (os == UNIT_FAILED && ns != UNIT_FAILED)
+ set_remove(u->manager->failed_units, u);
+
+ /* Make sure the cgroup is always removed when we become inactive */
if (UNIT_IS_INACTIVE_OR_FAILED(ns))
unit_destroy_cgroup(u);
/* Note that this doesn't apply to RemainAfterExit services exiting
- * sucessfully, since there's no change of state in that case. Which is
+ * successfully, since there's no change of state in that case. Which is
* why it is handled in service_set_state() */
if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) {
- ExecContext *ec = unit_get_exec_context(u);
+ ExecContext *ec;
+
+ ec = unit_get_exec_context(u);
if (ec && exec_context_may_touch_console(ec)) {
if (UNIT_IS_INACTIVE_OR_FAILED(ns)) {
m->n_on_console --;
}
/* stop unneeded units regardless if going down was expected or not */
- if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
+ if (UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
check_unneeded_dependencies(u);
if (ns != os && ns == UNIT_FAILED) {
- log_notice_unit(u->id,
- "Unit %s entered failed state.", u->id);
+ log_notice_unit(u->id, "Unit %s entered failed state.", u->id);
unit_start_on_failure(u);
}
}
}
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 unit watching
- * each PID for now. */
+ /* Watch a specific PID. We only support one or two units
+ * watching each PID for now, not more. */
+
+ r = set_ensure_allocated(&u->pids, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ return r;
+
+ r = hashmap_ensure_allocated(&u->manager->watch_pids1, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(u->manager->watch_pids1, LONG_TO_PTR(pid), u);
+ if (r == -EEXIST) {
+ r = hashmap_ensure_allocated(&u->manager->watch_pids2, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(u->manager->watch_pids2, LONG_TO_PTR(pid), u);
+ }
+
+ q = set_put(u->pids, LONG_TO_PTR(pid));
+ if (q < 0)
+ return q;
- return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u);
+ return r;
}
void unit_unwatch_pid(Unit *u, pid_t pid) {
assert(u);
assert(pid >= 1);
- hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u);
+ hashmap_remove_value(u->manager->watch_pids1, LONG_TO_PTR(pid), u);
+ hashmap_remove_value(u->manager->watch_pids2, LONG_TO_PTR(pid), u);
+ set_remove(u->pids, LONG_TO_PTR(pid));
+}
+
+void unit_unwatch_all_pids(Unit *u) {
+ assert(u);
+
+ while (!set_isempty(u->pids))
+ unit_unwatch_pid(u, PTR_TO_LONG(set_first(u->pids)));
+
+ set_free(u->pids);
+ u->pids = NULL;
+}
+
+static int unit_watch_pids_in_path(Unit *u, const char *path) {
+ _cleanup_closedir_ DIR *d = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ int ret = 0, r;
+
+ assert(u);
+ assert(path);
+
+ /* Adds all PIDs from a specific cgroup path to the set of PIDs we watch. */
+
+ r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, path, &f);
+ if (r >= 0) {
+ pid_t pid;
+
+ while ((r = cg_read_pid(f, &pid)) > 0) {
+ r = unit_watch_pid(u, pid);
+ if (r < 0 && ret >= 0)
+ ret = r;
+ }
+ if (r < 0 && ret >= 0)
+ ret = r;
+
+ } else if (ret >= 0)
+ ret = r;
+
+ r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, path, &d);
+ if (r >= 0) {
+ char *fn;
+
+ while ((r = cg_read_subgroup(d, &fn)) > 0) {
+ _cleanup_free_ char *p = NULL;
+
+ p = strjoin(path, "/", fn, NULL);
+ free(fn);
+
+ if (!p)
+ return -ENOMEM;
+
+ r = unit_watch_pids_in_path(u, p);
+ if (r < 0 && ret >= 0)
+ ret = r;
+ }
+ if (r < 0 && ret >= 0)
+ ret = r;
+
+ } else if (ret >= 0)
+ ret = r;
+
+ return ret;
+}
+
+int unit_watch_all_pids(Unit *u) {
+ assert(u);
+
+ /* Adds all PIDs from our cgroup to the set of PIDs we watch */
+
+ if (!u->cgroup_path)
+ return -ENOENT;
+
+ return unit_watch_pids_in_path(u, u->cgroup_path);
+}
+
+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_LONG(e);
+
+ if (pid == except1 || pid == except2)
+ continue;
+
+ if (!pid_is_unwaited(pid))
+ unit_unwatch_pid(u, pid);
+ }
}
bool unit_job_is_applicable(Unit *u, JobType j) {
return 0;
}
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) {
+ DISABLE_WARNING_FORMAT_NONLITERAL;
manager_status_printf(u->manager, false, status, unit_status_msg_format, unit_description(u));
+ REENABLE_WARNING;
}
-#pragma GCC diagnostic pop
bool unit_need_daemon_reload(Unit *u) {
_cleanup_strv_free_ char **t = NULL;
ref->unit = NULL;
}
-int unit_exec_context_defaults(Unit *u, ExecContext *c) {
+int unit_cgroup_context_init_defaults(Unit *u, CGroupContext *c) {
+ assert(u);
+ assert(c);
+
+ /* Copy in the manager defaults into the cgroup context,
+ * _before_ the rest of the settings have been initialized */
+
+ c->cpu_accounting = u->manager->default_cpu_accounting;
+ c->blockio_accounting = u->manager->default_blockio_accounting;
+ c->memory_accounting = u->manager->default_memory_accounting;
+
+ return 0;
+}
+
+int unit_exec_context_patch_defaults(Unit *u, ExecContext *c) {
unsigned i;
int r;
assert(u);
assert(c);
+ /* Patch in the manager defaults into the exec context,
+ * _after_ the rest of the settings have been initialized */
+
/* This only copies in the ones that need memory */
- for (i = 0; i < RLIMIT_NLIMITS; i++)
+ for (i = 0; i < _RLIMIT_MAX; i++)
if (u->manager->rlimit[i] && !c->rlimit[i]) {
c->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1);
if (!c->rlimit[i])
return r;
}
+ if (u->manager->running_as == SYSTEMD_USER &&
+ (c->syscall_whitelist ||
+ !set_isempty(c->syscall_filter) ||
+ !set_isempty(c->syscall_archs) ||
+ c->address_families_whitelist ||
+ !set_isempty(c->address_families)))
+ c->no_new_privileges = true;
+
+ if (c->private_devices)
+ c->capability_bounding_set_drop |= (uint64_t) 1ULL << (uint64_t) CAP_MKNOD;
+
return 0;
}
assert(name);
assert(_p);
assert(_q);
- assert(mode & (UNIT_PERSISTENT|UNIT_RUNTIME));
b = xescape(name, "/.");
if (!b)
return -ENOENT;
p = strjoin(c, "/", u->id, ".d", NULL);
- } else if (mode & UNIT_PERSISTENT)
+ } else if (mode == UNIT_PERSISTENT && !u->transient)
p = strjoin("/etc/systemd/system/", u->id, ".d", NULL);
else
p = strjoin("/run/systemd/system/", u->id, ".d", NULL);
assert(name);
assert(data);
- if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
return 0;
r = drop_in_file(u, mode, name, &p, &q);
assert(name);
assert(format);
- if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
return 0;
va_start(ap, format);
if (!UNIT_VTABLE(u)->private_section)
return -EINVAL;
- if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
return 0;
ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL);
assert(name);
assert(format);
- if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
return 0;
va_start(ap, format);
assert(u);
- if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
return 0;
r = drop_in_file(u, mode, name, &p, &q);
pid_t control_pid,
bool main_pid_alien) {
- int sig, wait_for_exit = 0, r;
+ int sig, wait_for_exit = false, r;
assert(u);
assert(c);
_cleanup_free_ char *comm = NULL;
get_process_comm(main_pid, &comm);
- log_warning_unit(u->id, "Failed to kill main process %li (%s): %s",
- (long) main_pid, strna(comm), strerror(-r));
+ log_warning_unit(u->id, "Failed to kill main process " PID_FMT " (%s): %s", main_pid, strna(comm), strerror(-r));
} else {
- wait_for_exit = !main_pid_alien;
+ if (!main_pid_alien)
+ wait_for_exit = true;
- if (c->send_sighup)
+ if (c->send_sighup && !sigkill)
kill(main_pid, SIGHUP);
}
}
_cleanup_free_ char *comm = NULL;
get_process_comm(control_pid, &comm);
- log_warning_unit(u->id,
- "Failed to kill control process %li (%s): %s",
- (long) control_pid, strna(comm), strerror(-r));
+ log_warning_unit(u->id, "Failed to kill control process " PID_FMT " (%s): %s", control_pid, strna(comm), strerror(-r));
} else {
wait_for_exit = true;
- if (c->send_sighup)
+ if (c->send_sighup && !sigkill)
kill(control_pid, SIGHUP);
}
}
if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r));
} else if (r > 0) {
- wait_for_exit = true;
- if (c->send_sighup) {
+ /* FIXME: For now, we will not wait for the
+ * cgroup members to die, simply because
+ * cgroup notification is unreliable. It
+ * doesn't work at all in containers, and
+ * outside of containers it can be confused
+ * easily by leaving directories in the
+ * cgroup. */
+
+ /* wait_for_exit = true; */
+
+ if (c->send_sighup && !sigkill) {
set_free(pid_set);
pid_set = unit_pid_set(main_pid, control_pid);
if (!pid_set)
return -ENOMEM;
- cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set);
+ cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, false, true, false, pid_set);
}
}
}
return 0;
}
- r = strv_push(&u->requires_mounts_for, p);
- if (r < 0) {
- free(p);
+ r = strv_consume(&u->requires_mounts_for, p);
+ if (r < 0)
return r;
- }
PATH_FOREACH_PREFIX_MORE(prefix, p) {
Set *x;
[UNIT_TRIGGERED_BY] = "TriggeredBy",
[UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo",
[UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom",
+ [UNIT_JOINS_NAMESPACE_OF] = "JoinsNamespaceOf",
[UNIT_REFERENCES] = "References",
[UNIT_REFERENCED_BY] = "ReferencedBy",
- [UNIT_JOINS_NAMESPACE_OF] = "JoinsNamespaceOf",
};
DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
~ianmdlvl / elogind.git / blobdiff