#include <unistd.h>
#include <sys/stat.h>
-#include "systemd/sd-id128.h"
-#include "systemd/sd-messages.h"
+#include "sd-id128.h"
+#include "sd-messages.h"
#include "set.h"
#include "unit.h"
#include "macro.h"
#include "special.h"
#include "cgroup-util.h"
#include "missing.h"
-#include "cgroup-attr.h"
#include "mkdir.h"
#include "label.h"
#include "fileio-label.h"
#include "bus-errors.h"
+#include "dbus.h"
+#include "execute.h"
+#include "virt.h"
+#include "dropin.h"
const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = &service_vtable,
- [UNIT_TIMER] = &timer_vtable,
[UNIT_SOCKET] = &socket_vtable,
+ [UNIT_BUSNAME] = &busname_vtable,
[UNIT_TARGET] = &target_vtable,
+ [UNIT_SNAPSHOT] = &snapshot_vtable,
[UNIT_DEVICE] = &device_vtable,
[UNIT_MOUNT] = &mount_vtable,
[UNIT_AUTOMOUNT] = &automount_vtable,
- [UNIT_SNAPSHOT] = &snapshot_vtable,
[UNIT_SWAP] = &swap_vtable,
- [UNIT_PATH] = &path_vtable
+ [UNIT_TIMER] = &timer_vtable,
+ [UNIT_PATH] = &path_vtable,
+ [UNIT_SLICE] = &slice_vtable,
+ [UNIT_SCOPE] = &scope_vtable
};
+static int maybe_warn_about_dependency(const char *id, const char *other, UnitDependency dependency);
+
Unit *unit_new(Manager *m, size_t size) {
Unit *u;
u->deserialized_job = _JOB_TYPE_INVALID;
u->default_dependencies = true;
u->unit_file_state = _UNIT_FILE_STATE_INVALID;
+ u->on_failure_job_mode = JOB_REPLACE;
return u;
}
return !!set_get(u->names, (char*) name);
}
+static 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;
+ }
+
+ ec = unit_get_exec_context(u);
+ if (ec)
+ exec_context_init(ec);
+
+ kc = unit_get_kill_context(u);
+ if (kc)
+ kill_context_init(kc);
+
+ if (UNIT_VTABLE(u)->init)
+ UNIT_VTABLE(u)->init(u);
+}
+
int unit_add_name(Unit *u, const char *text) {
+ _cleanup_free_ char *s = NULL, *i = NULL;
UnitType t;
- char *s, *i = NULL;
int r;
assert(u);
assert(text);
if (unit_name_is_template(text)) {
+
if (!u->instance)
return -EINVAL;
s = unit_name_replace_instance(text, u->instance);
} else
s = strdup(text);
-
if (!s)
return -ENOMEM;
- if (!unit_name_is_valid(s, false)) {
- r = -EINVAL;
- goto fail;
- }
+ if (!unit_name_is_valid(s, TEMPLATE_INVALID))
+ return -EINVAL;
assert_se((t = unit_name_to_type(s)) >= 0);
- if (u->type != _UNIT_TYPE_INVALID && t != u->type) {
- r = -EINVAL;
- goto fail;
- }
+ if (u->type != _UNIT_TYPE_INVALID && t != u->type)
+ return -EINVAL;
- if ((r = unit_name_to_instance(s, &i)) < 0)
- goto fail;
+ r = unit_name_to_instance(s, &i);
+ if (r < 0)
+ return r;
- if (i && unit_vtable[t]->no_instances) {
- r = -EINVAL;
- goto fail;
- }
+ if (i && unit_vtable[t]->no_instances)
+ return -EINVAL;
/* Ensure that this unit is either instanced or not instanced,
* but not both. */
- if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) {
- r = -EINVAL;
- goto fail;
- }
+ if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i)
+ return -EINVAL;
if (unit_vtable[t]->no_alias &&
!set_isempty(u->names) &&
- !set_get(u->names, s)) {
- r = -EEXIST;
- goto fail;
- }
+ !set_get(u->names, s))
+ return -EEXIST;
- if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) {
- r = -E2BIG;
- goto fail;
- }
+ if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES)
+ return -E2BIG;
- if ((r = set_put(u->names, s)) < 0) {
+ r = set_put(u->names, s);
+ if (r < 0) {
if (r == -EEXIST)
- r = 0;
- goto fail;
+ return 0;
+
+ return r;
}
- if ((r = hashmap_put(u->manager->units, s, u)) < 0) {
+ r = hashmap_put(u->manager->units, s, u);
+ if (r < 0) {
set_remove(u->names, s);
- goto fail;
+ return r;
}
if (u->type == _UNIT_TYPE_INVALID) {
-
u->type = t;
u->id = s;
u->instance = i;
- LIST_PREPEND(Unit, units_by_type, u->manager->units_by_type[t], u);
+ LIST_PREPEND(units_by_type, u->manager->units_by_type[t], u);
- if (UNIT_VTABLE(u)->init)
- UNIT_VTABLE(u)->init(u);
- } else
- free(i);
+ unit_init(u);
- unit_add_to_dbus_queue(u);
- return 0;
+ i = NULL;
+ }
-fail:
- free(s);
- free(i);
+ s = NULL;
- return r;
+ unit_add_to_dbus_queue(u);
+ return 0;
}
int unit_choose_id(Unit *u, const char *name) {
- char *s, *t = NULL, *i;
+ _cleanup_free_ char *t = NULL;
+ char *s, *i;
int r;
assert(u);
if (!u->instance)
return -EINVAL;
- if (!(t = unit_name_replace_instance(name, u->instance)))
+ t = unit_name_replace_instance(name, u->instance);
+ if (!t)
return -ENOMEM;
name = t;
/* Selects one of the names of this unit as the id */
s = set_get(u->names, (char*) name);
- free(t);
-
if (!s)
return -ENOENT;
- if ((r = unit_name_to_instance(s, &i)) < 0)
+ r = unit_name_to_instance(s, &i);
+ if (r < 0)
return r;
u->id = s;
assert(u);
- if (!(s = strdup(description)))
- return -ENOMEM;
+ if (isempty(description))
+ s = NULL;
+ else {
+ s = strdup(description);
+ if (!s)
+ return -ENOMEM;
+ }
free(u->description);
u->description = s;
bool unit_check_gc(Unit *u) {
assert(u);
- if (u->load_state == UNIT_STUB)
- return true;
-
if (UNIT_VTABLE(u)->no_gc)
return true;
if (u->load_state != UNIT_STUB || u->in_load_queue)
return;
- LIST_PREPEND(Unit, load_queue, u->manager->load_queue, u);
+ LIST_PREPEND(load_queue, u->manager->load_queue, u);
u->in_load_queue = true;
}
if (u->in_cleanup_queue)
return;
- LIST_PREPEND(Unit, cleanup_queue, u->manager->cleanup_queue, u);
+ LIST_PREPEND(cleanup_queue, u->manager->cleanup_queue, u);
u->in_cleanup_queue = true;
}
if (unit_check_gc(u))
return;
- LIST_PREPEND(Unit, gc_queue, u->manager->gc_queue, u);
+ LIST_PREPEND(gc_queue, u->manager->gc_queue, u);
u->in_gc_queue = true;
u->manager->n_in_gc_queue ++;
-
- if (u->manager->gc_queue_timestamp <= 0)
- u->manager->gc_queue_timestamp = now(CLOCK_MONOTONIC);
}
void unit_add_to_dbus_queue(Unit *u) {
return;
/* Shortcut things if nobody cares */
- if (!bus_has_subscriber(u->manager)) {
+ if (sd_bus_track_count(u->manager->subscribed) <= 0 &&
+ set_isempty(u->manager->private_buses)) {
u->sent_dbus_new_signal = true;
return;
}
- LIST_PREPEND(Unit, dbus_queue, u->manager->dbus_unit_queue, u);
+ LIST_PREPEND(dbus_queue, u->manager->dbus_unit_queue, u);
u->in_dbus_queue = true;
}
set_free(s);
}
+static void unit_remove_transient(Unit *u) {
+ char **i;
+
+ assert(u);
+
+ if (!u->transient)
+ return;
+
+ if (u->fragment_path)
+ unlink(u->fragment_path);
+
+ STRV_FOREACH(i, u->dropin_paths) {
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ unlink(*i);
+
+ r = path_get_parent(*i, &p);
+ if (r >= 0)
+ rmdir(p);
+ }
+}
+
+static 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);
+ }
+ }
+ }
+
+ strv_free(u->requires_mounts_for);
+ u->requires_mounts_for = NULL;
+}
+
+static void unit_done(Unit *u) {
+ ExecContext *ec;
+ CGroupContext *cc;
+
+ 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);
+}
+
void unit_free(Unit *u) {
UnitDependency d;
Iterator i;
assert(u);
+ if (u->manager->n_reloading <= 0)
+ unit_remove_transient(u);
+
bus_unit_send_removed_signal(u);
- if (u->load_state != UNIT_STUB)
- if (UNIT_VTABLE(u)->done)
- UNIT_VTABLE(u)->done(u);
+ unit_done(u);
+
+ unit_free_requires_mounts_for(u);
SET_FOREACH(t, u->names, i)
hashmap_remove_value(u->manager->units, t, u);
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
bidi_set_free(u, u->dependencies[d]);
- if (u->requires_mounts_for) {
- LIST_REMOVE(Unit, has_requires_mounts_for, u->manager->has_requires_mounts_for, u);
- strv_free(u->requires_mounts_for);
- }
-
if (u->type != _UNIT_TYPE_INVALID)
- LIST_REMOVE(Unit, units_by_type, u->manager->units_by_type[u->type], u);
+ LIST_REMOVE(units_by_type, u->manager->units_by_type[u->type], u);
if (u->in_load_queue)
- LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u);
+ LIST_REMOVE(load_queue, u->manager->load_queue, u);
if (u->in_dbus_queue)
- LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u);
+ LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
if (u->in_cleanup_queue)
- LIST_REMOVE(Unit, cleanup_queue, u->manager->cleanup_queue, u);
+ LIST_REMOVE(cleanup_queue, u->manager->cleanup_queue, u);
if (u->in_gc_queue) {
- LIST_REMOVE(Unit, gc_queue, u->manager->gc_queue, u);
+ LIST_REMOVE(gc_queue, u->manager->gc_queue, u);
u->manager->n_in_gc_queue--;
}
- cgroup_bonding_free_list(u->cgroup_bondings, u->manager->n_reloading <= 0);
- cgroup_attribute_free_list(u->cgroup_attributes);
+ if (u->in_cgroup_queue)
+ LIST_REMOVE(cgroup_queue, u->manager->cgroup_queue, u);
+
+ if (u->cgroup_path) {
+ hashmap_remove(u->manager->cgroup_unit, u->cgroup_path);
+ free(u->cgroup_path);
+ }
+
+ set_remove(u->manager->failed_units, u);
+ set_remove(u->manager->startup_units, u);
free(u->description);
strv_free(u->documentation);
set_free_free(u->names);
+ unit_unwatch_all_pids(u);
+
condition_free_list(u->conditions);
+ unit_ref_unset(&u->slice);
+
while (u->refs)
unit_ref_unset(u->refs);
assert_se(hashmap_replace(u->manager->units, t, u) == 0);
}
-static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) {
+static void merge_dependencies(Unit *u, Unit *other, const char *other_id, UnitDependency d) {
Iterator i;
Unit *back;
int r;
SET_FOREACH(back, other->dependencies[d], i) {
UnitDependency k;
- for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++)
- if ((r = set_remove_and_put(back->dependencies[k], other, u)) < 0) {
-
+ 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->id, other_id, k);
+ } else {
+ r = set_remove_and_put(back->dependencies[k], other, u);
if (r == -EEXIST)
set_remove(back->dependencies[k], other);
else
- assert(r == -ENOENT);
+ assert(r >= 0 || r == -ENOENT);
}
+ }
}
+ /* Also do not move dependencies on u to itself */
+ back = set_remove(other->dependencies[d], u);
+ if (back)
+ maybe_warn_about_dependency(u->id, other_id, d);
+
complete_move(&u->dependencies[d], &other->dependencies[d]);
set_free(other->dependencies[d]);
int unit_merge(Unit *u, Unit *other) {
UnitDependency d;
+ const char *other_id = NULL;
assert(u);
assert(other);
return -EINVAL;
if (other->load_state != UNIT_STUB &&
- other->load_state != UNIT_ERROR)
+ other->load_state != UNIT_NOT_FOUND)
return -EEXIST;
if (other->job)
if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other)))
return -EEXIST;
+ if (other->id)
+ other_id = strdupa(other->id);
+
/* Merge names */
merge_names(u, other);
/* Merge dependencies */
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
- merge_dependencies(u, other, d);
+ merge_dependencies(u, other, other_id, d);
other->load_state = UNIT_MERGED;
other->merged_into = u;
int unit_merge_by_name(Unit *u, const char *name) {
Unit *other;
int r;
- char *s = NULL;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name);
if (!u->instance)
return -EINVAL;
- if (!(s = unit_name_replace_instance(name, u->instance)))
+ s = unit_name_replace_instance(name, u->instance);
+ if (!s)
return -ENOMEM;
name = s;
}
- if (!(other = manager_get_unit(u->manager, name)))
+ other = manager_get_unit(u->manager, name);
+ if (!other)
r = unit_add_name(u, name);
else
r = unit_merge(u, other);
- free(s);
return r;
}
assert(u);
assert(c);
+ if (c->working_directory) {
+ r = unit_require_mounts_for(u, c->working_directory);
+ if (r < 0)
+ return r;
+ }
+
+ if (c->root_directory) {
+ r = unit_require_mounts_for(u, c->root_directory);
+ if (r < 0)
+ return r;
+ }
+
+ if (u->manager->running_as != SYSTEMD_SYSTEM)
+ return 0;
+
+ if (c->private_tmp) {
+ r = unit_require_mounts_for(u, "/tmp");
+ if (r < 0)
+ return r;
+
+ r = unit_require_mounts_for(u, "/var/tmp");
+ if (r < 0)
+ return r;
+ }
+
if (c->std_output != EXEC_OUTPUT_KMSG &&
c->std_output != EXEC_OUTPUT_SYSLOG &&
c->std_output != EXEC_OUTPUT_JOURNAL &&
/* If syslog or kernel logging is requested, make sure our own
* logging daemon is run first. */
- if (u->manager->running_as == SYSTEMD_SYSTEM) {
- r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true);
- if (r < 0)
- return r;
- }
+ r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true);
+ if (r < 0)
+ return r;
return 0;
}
char *t, **j;
UnitDependency d;
Iterator i;
- char *p2;
+ _cleanup_free_ char *p2 = NULL;
const char *prefix2;
char
timestamp1[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);
"%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\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, 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(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);
- if ((following = unit_following(u)))
+ 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);
+ }
+
if (u->fragment_path)
fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path);
}
if (u->load_state == UNIT_LOADED) {
- CGroupBonding *b;
- CGroupAttribute *a;
fprintf(f,
"%s\tStopWhenUnneeded: %s\n"
"%s\tRefuseManualStart: %s\n"
"%s\tRefuseManualStop: %s\n"
"%s\tDefaultDependencies: %s\n"
- "%s\tOnFailureIsolate: %s\n"
+ "%s\tOnFailureJobMode: %s\n"
"%s\tIgnoreOnIsolate: %s\n"
"%s\tIgnoreOnSnapshot: %s\n",
prefix, yes_no(u->stop_when_unneeded),
prefix, yes_no(u->refuse_manual_start),
prefix, yes_no(u->refuse_manual_stop),
prefix, yes_no(u->default_dependencies),
- prefix, yes_no(u->on_failure_isolate),
+ prefix, job_mode_to_string(u->on_failure_job_mode),
prefix, yes_no(u->ignore_on_isolate),
prefix, yes_no(u->ignore_on_snapshot));
- LIST_FOREACH(by_unit, b, u->cgroup_bondings)
- fprintf(f, "%s\tControlGroup: %s:%s\n",
- prefix, b->controller, b->path);
-
- LIST_FOREACH(by_unit, a, u->cgroup_attributes) {
- _cleanup_free_ char *v = NULL;
-
- if (a->semantics && a->semantics->map_write)
- a->semantics->map_write(a->semantics, a->value, &v);
-
- fprintf(f, "%s\tControlGroupAttribute: %s %s \"%s\"\n",
- prefix, a->controller, a->name, v ? v : a->value);
- }
-
if (UNIT_VTABLE(u)->dump)
UNIT_VTABLE(u)->dump(u, f, prefix2);
if (u->nop_job)
job_dump(u->nop_job, f, prefix2);
- free(p2);
}
/* Common implementation for multiple backends */
assert(u);
- /* Load a .service file */
- if ((r = unit_load_fragment(u)) < 0)
+ /* Load a .{service,socket,...} file */
+ r = unit_load_fragment(u);
+ if (r < 0)
return r;
if (u->load_state == UNIT_STUB)
return -ENOENT;
/* Load drop-in directory data */
- if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
+ r = unit_load_dropin(unit_follow_merge(u));
+ if (r < 0)
return r;
return 0;
* something can be loaded or not doesn't matter. */
/* Load a .service file */
- if ((r = unit_load_fragment(u)) < 0)
+ 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 */
- if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
+ r = unit_load_dropin(unit_follow_merge(u));
+ if (r < 0)
return r;
return 0;
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_REQUIRED_BY_OVERRIDABLE,
Unit *target;
Iterator i;
- int r;
unsigned k;
+ int r = 0;
assert(u);
for (k = 0; k < ELEMENTSOF(deps); k++)
- SET_FOREACH(target, u->dependencies[deps[k]], i)
- if ((r = unit_add_default_target_dependency(u, target)) < 0)
+ SET_FOREACH(target, u->dependencies[deps[k]], i) {
+ r = unit_add_default_target_dependency(u, target);
+ if (r < 0)
+ return r;
+ }
+
+ return r;
+}
+
+static int unit_add_slice_dependencies(Unit *u) {
+ assert(u);
+
+ 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);
+
+ if (streq(u->id, SPECIAL_ROOT_SLICE))
+ return 0;
+
+ return unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, SPECIAL_ROOT_SLICE, NULL, true);
+}
+
+static 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) {
+ Unit *m;
+
+ r = manager_get_unit_by_path(u->manager, prefix, ".mount", &m);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+ if (m == u)
+ continue;
+
+ if (m->load_state != UNIT_LOADED)
+ continue;
+
+ r = unit_add_dependency(u, UNIT_AFTER, m, true);
+ if (r < 0)
return r;
+ if (m->fragment_path) {
+ r = unit_add_dependency(u, UNIT_REQUIRES, m, true);
+ if (r < 0)
+ return r;
+ }
+ }
+ }
+
return 0;
}
+static int unit_add_startup_units(Unit *u) {
+ CGroupContext *c;
+ int r = 0;
+
+ c = unit_get_cgroup_context(u);
+ if (!c)
+ return 0;
+
+ if (c->startup_cpu_shares == (unsigned long) -1 &&
+ c->startup_blockio_weight == (unsigned long) -1)
+ return 0;
+
+ r = set_put(u->manager->startup_units, u);
+ if (r == -EEXIST)
+ return 0;
+
+ return r;
+}
+
int unit_load(Unit *u) {
int r;
assert(u);
if (u->in_load_queue) {
- LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u);
+ LIST_REMOVE(load_queue, u->manager->load_queue, u);
u->in_load_queue = false;
}
if (u->load_state != UNIT_STUB)
return 0;
- if (UNIT_VTABLE(u)->load)
- if ((r = UNIT_VTABLE(u)->load(u)) < 0)
+ if (UNIT_VTABLE(u)->load) {
+ r = UNIT_VTABLE(u)->load(u);
+ if (r < 0)
goto fail;
+ }
if (u->load_state == UNIT_STUB) {
r = -ENOENT;
goto fail;
}
- if (u->load_state == UNIT_LOADED &&
- u->default_dependencies)
- if ((r = unit_add_default_dependencies(u)) < 0)
+ if (u->load_state == UNIT_LOADED) {
+
+ r = unit_add_target_dependencies(u);
+ if (r < 0)
goto fail;
- if (u->load_state == UNIT_LOADED) {
- r = unit_add_mount_links(u);
+ r = unit_add_slice_dependencies(u);
if (r < 0)
- return r;
- }
+ goto fail;
- if (u->on_failure_isolate &&
- set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) {
+ r = unit_add_mount_dependencies(u);
+ if (r < 0)
+ goto fail;
- log_error("More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.",
- u->id);
+ r = unit_add_startup_units(u);
+ if (r < 0)
+ goto fail;
- r = -EINVAL;
- 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 0;
fail:
- u->load_state = UNIT_ERROR;
+ u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR;
u->load_error = r;
unit_add_to_dbus_queue(u);
unit_add_to_gc_queue(u);
- log_debug("Failed to load configuration for %s: %s", u->id, strerror(-r));
+ log_debug_unit(u->id, "Failed to load configuration for %s: %s",
+ u->id, strerror(-r));
return r;
}
-bool unit_condition_test(Unit *u) {
+static bool unit_condition_test(Unit *u) {
assert(u);
dual_timestamp_get(&u->condition_timestamp);
- u->condition_result = condition_test_list(u->conditions);
+ u->condition_result = condition_test_list(u->id, u->conditions);
return u->condition_result;
}
-static const char* unit_get_status_message_format(Unit *u, JobType t) {
+_pure_ static const char* unit_get_status_message_format(Unit *u, JobType t) {
const UnitStatusMessageFormats *format_table;
assert(u);
return format_table->starting_stopping[t == JOB_STOP];
}
-static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) {
+_pure_ static const char *unit_get_status_message_format_try_harder(Unit *u, JobType t) {
const char *format;
assert(u);
if (!format)
return;
+ DISABLE_WARNING_FORMAT_NONLITERAL;
unit_status_printf(u, "", format);
+ REENABLE_WARNING;
}
-#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 :
SD_MESSAGE_UNIT_RELOADING;
log_struct_unit(LOG_INFO,
- u->id,
- MESSAGE_ID(mid),
- "MESSAGE=%s", buf,
- NULL);
+ u->id,
+ MESSAGE_ID(mid),
+ "MESSAGE=%s", buf,
+ NULL);
}
-#pragma GCC diagnostic pop
/* Errors:
* -EBADR: This unit type does not support starting.
* but we don't want to recheck the condition in that case. */
if (state != UNIT_ACTIVATING &&
!unit_condition_test(u)) {
- log_debug("Starting of %s requested but condition failed. Ignoring.", u->id);
+ log_debug_unit(u->id, "Starting of %s requested but condition failed. Ignoring.", u->id);
return -EALREADY;
}
/* Forward to the main object, if we aren't it. */
- if ((following = unit_following(u))) {
- log_debug("Redirecting start request from %s to %s.", u->id, following->id);
+ following = unit_following(u);
+ if (following) {
+ log_debug_unit(u->id, "Redirecting start request from %s to %s.",
+ u->id, following->id);
return unit_start(following);
}
return -EALREADY;
if ((following = unit_following(u))) {
- log_debug("Redirecting stop request from %s to %s.", u->id, following->id);
+ log_debug_unit(u->id, "Redirecting stop request from %s to %s.",
+ u->id, following->id);
return unit_stop(following);
}
if (state == UNIT_RELOADING)
return -EALREADY;
- if (state != UNIT_ACTIVE)
+ if (state != UNIT_ACTIVE) {
+ log_warning_unit(u->id, "Unit %s cannot be reloaded because it is inactive.",
+ u->id);
return -ENOEXEC;
+ }
- if ((following = unit_following(u))) {
- log_debug("Redirecting reload request from %s to %s.", u->id, following->id);
+ following = unit_following(u);
+ if (following) {
+ log_debug_unit(u->id, "Redirecting reload request from %s to %s.",
+ u->id, following->id);
return unit_reload(following);
}
return;
SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i)
- if (unit_pending_active(other))
+ if (unit_active_or_pending(other))
return;
SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
- if (unit_pending_active(other))
+ if (unit_active_or_pending(other))
return;
SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i)
- if (unit_pending_active(other))
+ if (unit_active_or_pending(other))
return;
SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i)
- if (unit_pending_active(other))
+ if (unit_active_or_pending(other))
return;
- log_info("Service %s is not needed anymore. Stopping.", u->id);
+ log_info_unit(u->id, "Unit %s is not needed anymore. Stopping.", u->id);
/* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL);
}
+static void unit_check_binds_to(Unit *u) {
+ bool stop = false;
+ Unit *other;
+ Iterator i;
+
+ 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;
+ }
+
+ if (!stop)
+ return;
+
+ log_info_unit(u->id, "Unit %s is bound to inactive service. Stopping, too.", u->id);
+
+ /* A unit we need to run is gone. Sniff. Let's stop this. */
+ manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL);
+}
+
static void retroactively_start_dependencies(Unit *u) {
Iterator i;
Unit *other;
unit_check_unneeded(other);
}
-void unit_trigger_on_failure(Unit *u) {
+void unit_start_on_failure(Unit *u) {
Unit *other;
Iterator i;
if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0)
return;
- log_info("Triggering OnFailure= dependencies of %s.", u->id);
+ log_info_unit(u->id, "Triggering OnFailure= dependencies of %s.", u->id);
SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) {
int r;
- if ((r = manager_add_job(u->manager, JOB_START, other, u->on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL)) < 0)
- log_error("Failed to enqueue OnFailure= job: %s", strerror(-r));
+ r = manager_add_job(u->manager, JOB_START, other, u->on_failure_job_mode, true, NULL, NULL);
+ if (r < 0)
+ log_error_unit(u->id, "Failed to enqueue OnFailure= job: %s", strerror(-r));
}
}
+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);
+}
+
void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) {
Manager *m;
bool unexpected;
/* 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 OK an expected
+ * 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;
u->active_enter_timestamp = ts;
else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
u->active_exit_timestamp = ts;
-
- timer_unit_notify(u, ns);
- path_unit_notify(u, ns);
}
+ /* Keep track of failed units */
+ if (ns == UNIT_FAILED)
+ set_put(u->manager->failed_units, u);
+ else
+ 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))
- cgroup_bonding_trim_list(u->cgroup_bondings, true);
+ unit_destroy_cgroup(u);
+ /* Note that this doesn't apply to RemainAfterExit services exiting
+ * 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--;
- else
- m->n_on_console++;
+ if (UNIT_IS_INACTIVE_OR_FAILED(ns)) {
+ m->n_on_console --;
+
+ if (m->n_on_console == 0)
+ /* unset no_console_output flag, since the console is free */
+ m->no_console_output = false;
+ } else
+ 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_struct_unit(LOG_NOTICE,
- u->id,
- "MESSAGE=Unit %s entered failed state", u->id,
- NULL);
- unit_trigger_on_failure(u);
+ log_notice_unit(u->id, "Unit %s entered failed state.", u->id);
+ unit_start_on_failure(u);
}
}
if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
if (unit_has_name(u, SPECIAL_DBUS_SERVICE))
- /* The bus just might have become available,
+ /* The bus might have just become available,
* hence try to connect to it, if we aren't
* yet connected. */
bus_init(m, true);
}
manager_recheck_journal(m);
+ unit_trigger_notify(u);
- /* Maybe we finished startup and are now ready for being
- * stopped because unneeded? */
- if (u->manager->n_reloading <= 0)
+ if (u->manager->n_reloading <= 0) {
+ /* Maybe we finished startup and are now ready for
+ * being stopped because unneeded? */
unit_check_unneeded(u);
+ /* Maybe we finished startup, but something we needed
+ * has vanished? Let's die then. (This happens when
+ * something BindsTo= to a Type=oneshot unit, as these
+ * units go directly from starting to inactive,
+ * without ever entering started.) */
+ unit_check_binds_to(u);
+ }
+
unit_add_to_dbus_queue(u);
unit_add_to_gc_queue(u);
}
-int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) {
- struct epoll_event ev = {
- .data.ptr = w,
- .events = events,
- };
+int unit_watch_pid(Unit *u, pid_t pid) {
+ int q, r;
assert(u);
- assert(fd >= 0);
- assert(w);
- assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u));
+ assert(pid >= 1);
- if (epoll_ctl(u->manager->epoll_fd,
- w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD,
- fd,
- &ev) < 0)
- return -errno;
+ /* Watch a specific PID. We only support one or two units
+ * watching each PID for now, not more. */
- w->fd = fd;
- w->type = WATCH_FD;
- w->data.unit = u;
+ r = set_ensure_allocated(&u->pids, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ return r;
- return 0;
-}
+ r = hashmap_ensure_allocated(&u->manager->watch_pids1, trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ return r;
-void unit_unwatch_fd(Unit *u, Watch *w) {
- assert(u);
- assert(w);
+ 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;
- if (w->type == WATCH_INVALID)
- return;
+ r = hashmap_put(u->manager->watch_pids2, LONG_TO_PTR(pid), u);
+ }
- assert(w->type == WATCH_FD);
- assert(w->data.unit == u);
- assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
+ q = set_put(u->pids, LONG_TO_PTR(pid));
+ if (q < 0)
+ return q;
- w->fd = -1;
- w->type = WATCH_INVALID;
- w->data.unit = NULL;
+ return r;
}
-int unit_watch_pid(Unit *u, pid_t pid) {
+void unit_unwatch_pid(Unit *u, pid_t pid) {
assert(u);
assert(pid >= 1);
- /* Watch a specific PID. We only support one unit watching
- * each PID for now. */
-
- return hashmap_put(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_pid(Unit *u, pid_t pid) {
+void unit_unwatch_all_pids(Unit *u) {
assert(u);
- assert(pid >= 1);
- hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u);
+ while (!set_isempty(u->pids))
+ unit_unwatch_pid(u, PTR_TO_LONG(set_first(u->pids)));
+
+ set_free(u->pids);
+ u->pids = NULL;
}
-int unit_watch_timer(Unit *u, clockid_t clock_id, bool relative, usec_t usec, Watch *w) {
- struct itimerspec its = {};
- int flags, fd;
- bool ours;
+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(w);
- assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u));
+ assert(path);
- /* This will try to reuse the old timer if there is one */
+ /* Adds all PIDs from a specific cgroup path to the set of PIDs we watch. */
- if (w->type == WATCH_UNIT_TIMER) {
- assert(w->data.unit == u);
- assert(w->fd >= 0);
+ r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, path, &f);
+ if (r >= 0) {
+ pid_t pid;
- ours = false;
- fd = w->fd;
- } else if (w->type == WATCH_INVALID) {
+ 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;
- ours = true;
- fd = timerfd_create(clock_id, TFD_NONBLOCK|TFD_CLOEXEC);
- if (fd < 0)
- return -errno;
- } else
- assert_not_reached("Invalid watch type");
+ } else if (ret >= 0)
+ ret = r;
- if (usec <= 0) {
- /* Set absolute time in the past, but not 0, since we
- * don't want to disarm the timer */
- its.it_value.tv_sec = 0;
- its.it_value.tv_nsec = 1;
+ r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, path, &d);
+ if (r >= 0) {
+ char *fn;
- flags = TFD_TIMER_ABSTIME;
- } else {
- timespec_store(&its.it_value, usec);
- flags = relative ? 0 : TFD_TIMER_ABSTIME;
- }
+ while ((r = cg_read_subgroup(d, &fn)) > 0) {
+ _cleanup_free_ char *p = NULL;
- /* This will also flush the elapse counter */
- if (timerfd_settime(fd, flags, &its, NULL) < 0)
- goto fail;
+ p = strjoin(path, "/", fn, NULL);
+ free(fn);
- if (w->type == WATCH_INVALID) {
- struct epoll_event ev = {
- .data.ptr = w,
- .events = EPOLLIN,
- };
+ if (!p)
+ return -ENOMEM;
- if (epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0)
- goto fail;
- }
+ r = unit_watch_pids_in_path(u, p);
+ if (r < 0 && ret >= 0)
+ ret = r;
+ }
+ if (r < 0 && ret >= 0)
+ ret = r;
- w->type = WATCH_UNIT_TIMER;
- w->fd = fd;
- w->data.unit = u;
+ } else if (ret >= 0)
+ ret = r;
- return 0;
+ return ret;
+}
-fail:
- if (ours)
- close_nointr_nofail(fd);
+int unit_watch_all_pids(Unit *u) {
+ assert(u);
- return -errno;
+ /* 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_unwatch_timer(Unit *u, Watch *w) {
+void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2) {
+ Iterator i;
+ void *e;
+
assert(u);
- assert(w);
- if (w->type == WATCH_INVALID)
- return;
+ /* Cleans dead PIDs from our list */
- assert(w->type == WATCH_UNIT_TIMER);
- assert(w->data.unit == u);
- assert(w->fd >= 0);
+ SET_FOREACH(e, u->pids, i) {
+ pid_t pid = PTR_TO_LONG(e);
- assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
- close_nointr_nofail(w->fd);
+ if (pid == except1 || pid == except2)
+ continue;
- w->fd = -1;
- w->type = WATCH_INVALID;
- w->data.unit = NULL;
+ if (!pid_is_unwaited(pid))
+ unit_unwatch_pid(u, pid);
+ }
}
bool unit_job_is_applicable(Unit *u, JobType j) {
}
}
+static int maybe_warn_about_dependency(const char *id, const char *other, UnitDependency dependency) {
+ assert(id);
+
+ switch (dependency) {
+ case UNIT_REQUIRES:
+ case UNIT_REQUIRES_OVERRIDABLE:
+ case UNIT_WANTS:
+ case UNIT_REQUISITE:
+ case UNIT_REQUISITE_OVERRIDABLE:
+ case UNIT_BINDS_TO:
+ case UNIT_PART_OF:
+ case UNIT_REQUIRED_BY:
+ case UNIT_REQUIRED_BY_OVERRIDABLE:
+ case UNIT_WANTED_BY:
+ case UNIT_BOUND_BY:
+ case UNIT_CONSISTS_OF:
+ case UNIT_REFERENCES:
+ case UNIT_REFERENCED_BY:
+ case UNIT_PROPAGATES_RELOAD_TO:
+ case UNIT_RELOAD_PROPAGATED_FROM:
+ case UNIT_JOINS_NAMESPACE_OF:
+ return 0;
+
+ case UNIT_CONFLICTS:
+ case UNIT_CONFLICTED_BY:
+ case UNIT_BEFORE:
+ case UNIT_AFTER:
+ case UNIT_ON_FAILURE:
+ case UNIT_TRIGGERS:
+ case UNIT_TRIGGERED_BY:
+ if (streq_ptr(id, other))
+ log_warning_unit(id, "Dependency %s=%s dropped from unit %s",
+ unit_dependency_to_string(dependency), id, other);
+ else
+ log_warning_unit(id, "Dependency %s=%s dropped from unit %s merged into %s",
+ unit_dependency_to_string(dependency), id,
+ strna(other), id);
+ return -EINVAL;
+
+ case _UNIT_DEPENDENCY_MAX:
+ case _UNIT_DEPENDENCY_INVALID:
+ break;
+ }
+
+ assert_not_reached("Invalid dependency type");
+}
+
int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
[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,
};
int r, q = 0, v = 0, w = 0;
+ Unit *orig_u = u, *orig_other = other;
assert(u);
assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX);
/* We won't allow dependencies on ourselves. We will not
* consider them an error however. */
- if (u == other)
+ if (u == other) {
+ maybe_warn_about_dependency(orig_u->id, orig_other->id, d);
return 0;
+ }
- if ((r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func)) < 0)
+ r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func);
+ if (r < 0)
return r;
- if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID)
- if ((r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
+ if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) {
+ r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func);
+ if (r < 0)
+ return r;
+ }
+
+ if (add_reference) {
+ r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func);
+ if (r < 0)
return r;
- if (add_reference)
- if ((r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 ||
- (r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0)
+ r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func);
+ if (r < 0)
return r;
+ }
- if ((q = set_put(u->dependencies[d], other)) < 0)
+ q = set_put(u->dependencies[d], other);
+ if (q < 0)
return q;
- if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID)
- if ((v = set_put(other->dependencies[inverse_table[d]], u)) < 0) {
+ if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) {
+ v = set_put(other->dependencies[inverse_table[d]], u);
+ if (v < 0) {
r = v;
goto fail;
}
+ }
if (add_reference) {
- if ((w = set_put(u->dependencies[UNIT_REFERENCES], other)) < 0) {
+ w = set_put(u->dependencies[UNIT_REFERENCES], other);
+ if (w < 0) {
r = w;
goto fail;
}
- if ((r = set_put(other->dependencies[UNIT_REFERENCED_BY], u)) < 0)
+ r = set_put(other->dependencies[UNIT_REFERENCED_BY], u);
+ if (r < 0)
goto fail;
}
assert(u);
- if ((r = unit_add_dependency(u, d, other, add_reference)) < 0)
+ r = unit_add_dependency(u, d, other, add_reference);
+ if (r < 0)
return r;
- if ((r = unit_add_dependency(u, e, other, add_reference)) < 0)
+ r = unit_add_dependency(u, e, other, add_reference);
+ if (r < 0)
return r;
return 0;
assert(p);
if (!name)
- name = path_get_file_name(path);
+ name = basename(path);
if (!unit_name_is_template(name)) {
*p = NULL;
if (u->instance)
s = unit_name_replace_instance(name, u->instance);
else {
- char *i;
+ _cleanup_free_ char *i = NULL;
i = unit_name_to_prefix(u->id);
if (!i)
return NULL;
s = unit_name_replace_instance(name, i);
- free(i);
}
if (!s)
}
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 *s = NULL;
Unit *other;
int r;
- char *s;
assert(u);
assert(name || path);
- if (!(name = resolve_template(u, name, path, &s)))
+ name = resolve_template(u, name, path, &s);
+ if (!name)
return -ENOMEM;
- if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0)
- goto finish;
-
- r = unit_add_two_dependencies(u, d, e, other, add_reference);
+ r = manager_load_unit(u->manager, name, path, NULL, &other);
+ if (r < 0)
+ return r;
-finish:
- free(s);
- return r;
+ return unit_add_two_dependencies(u, d, e, other, add_reference);
}
int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
- char *s;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name || path);
- if (!(name = resolve_template(u, name, path, &s)))
+ name = resolve_template(u, name, path, &s);
+ if (!name)
return -ENOMEM;
- if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0)
- goto finish;
-
- r = unit_add_dependency(other, d, u, add_reference);
+ r = manager_load_unit(u->manager, name, path, NULL, &other);
+ if (r < 0)
+ return r;
-finish:
- free(s);
- return r;
+ return unit_add_dependency(other, d, u, add_reference);
}
int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
- char *s;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name || path);
- if (!(name = resolve_template(u, name, path, &s)))
+ name = resolve_template(u, name, path, &s);
+ if (!name)
return -ENOMEM;
- if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0)
- goto finish;
+ r = manager_load_unit(u->manager, name, path, NULL, &other);
+ if (r < 0)
+ return r;
- if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0)
- goto finish;
+ r = unit_add_two_dependencies(other, d, e, u, add_reference);
+ if (r < 0)
+ return r;
-finish:
- free(s);
return r;
}
int set_unit_path(const char *p) {
- _cleanup_free_ char *c = NULL;
-
/* This is mostly for debug purposes */
- c = path_make_absolute_cwd(p);
- if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0)
+ if (setenv("SYSTEMD_UNIT_PATH", p, 0) < 0)
return -errno;
return 0;
return unit_dbus_path_from_name(u->id);
}
-int unit_add_cgroup(Unit *u, CGroupBonding *b) {
+char *unit_default_cgroup_path(Unit *u) {
+ _cleanup_free_ char *escaped = NULL, *slice = NULL;
int r;
assert(u);
- assert(b);
- assert(b->path);
+ if (unit_has_name(u, SPECIAL_ROOT_SLICE))
+ return strdup(u->manager->cgroup_root);
- if (!b->controller) {
- b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER);
- if (!b->controller)
- return log_oom();
-
- b->ours = true;
- }
-
- /* Ensure this hasn't been added yet */
- assert(!b->unit);
-
- if (streq(b->controller, SYSTEMD_CGROUP_CONTROLLER)) {
- CGroupBonding *l;
-
- l = hashmap_get(u->manager->cgroup_bondings, b->path);
- LIST_PREPEND(CGroupBonding, by_path, l, b);
-
- r = hashmap_replace(u->manager->cgroup_bondings, b->path, l);
- if (r < 0) {
- LIST_REMOVE(CGroupBonding, by_path, l, b);
- return r;
- }
+ if (UNIT_ISSET(u->slice) && !unit_has_name(UNIT_DEREF(u->slice), SPECIAL_ROOT_SLICE)) {
+ r = cg_slice_to_path(UNIT_DEREF(u->slice)->id, &slice);
+ if (r < 0)
+ return NULL;
}
- LIST_PREPEND(CGroupBonding, by_unit, u->cgroup_bondings, b);
- b->unit = u;
-
- return 0;
-}
-
-char *unit_default_cgroup_path(Unit *u) {
- assert(u);
-
- if (u->instance) {
- _cleanup_free_ char *t = NULL;
-
- t = unit_name_template(u->id);
- if (!t)
- return NULL;
+ escaped = cg_escape(u->id);
+ if (!escaped)
+ return NULL;
- return strjoin(u->manager->cgroup_hierarchy, "/", t, "/", u->instance, NULL);
- } else
- return strjoin(u->manager->cgroup_hierarchy, "/", u->id, NULL);
+ if (slice)
+ return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL);
+ else
+ return strjoin(u->manager->cgroup_root, "/", escaped, NULL);
}
-int unit_add_cgroup_from_text(Unit *u, const char *name, bool overwrite, CGroupBonding **ret) {
- char *controller = NULL, *path = NULL;
- CGroupBonding *b = NULL;
- bool ours = false;
+int unit_add_default_slice(Unit *u, CGroupContext *c) {
+ _cleanup_free_ char *b = NULL;
+ const char *slice_name;
+ Unit *slice;
int r;
assert(u);
- assert(name);
-
- r = cg_split_spec(name, &controller, &path);
- if (r < 0)
- return r;
-
- if (!path) {
- path = unit_default_cgroup_path(u);
- ours = true;
- }
-
- if (!controller) {
- controller = strdup(SYSTEMD_CGROUP_CONTROLLER);
- ours = true;
- }
-
- if (!path || !controller) {
- free(path);
- free(controller);
- return log_oom();
- }
-
- b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
- if (b) {
- if (streq(path, b->path)) {
- free(path);
- free(controller);
-
- if (ret)
- *ret = b;
- return 0;
- }
-
- if (overwrite && !b->essential) {
- free(controller);
+ assert(c);
- free(b->path);
- b->path = path;
+ if (UNIT_ISSET(u->slice))
+ return 0;
- b->ours = ours;
- b->realized = false;
+ if (u->instance) {
+ _cleanup_free_ char *prefix = NULL, *escaped = NULL;
- if (ret)
- *ret = b;
+ /* Implicitly place all instantiated units in their
+ * own per-template slice */
- return 1;
- }
+ prefix = unit_name_to_prefix(u->id);
+ if (!prefix)
+ return -ENOMEM;
- r = -EEXIST;
- b = NULL;
- goto fail;
- }
+ /* The prefix is already escaped, but it might include
+ * "-" which has a special meaning for slice units,
+ * hence escape it here extra. */
+ escaped = strreplace(prefix, "-", "\\x2d");
+ if (!escaped)
+ return -ENOMEM;
- b = new0(CGroupBonding, 1);
- if (!b) {
- r = -ENOMEM;
- goto fail;
- }
+ if (u->manager->running_as == SYSTEMD_SYSTEM)
+ b = strjoin("system-", escaped, ".slice", NULL);
+ else
+ b = strappend(escaped, ".slice");
+ if (!b)
+ return -ENOMEM;
- b->controller = controller;
- b->path = path;
- b->ours = ours;
- b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER);
+ slice_name = b;
+ } else
+ slice_name =
+ u->manager->running_as == SYSTEMD_SYSTEM
+ ? SPECIAL_SYSTEM_SLICE
+ : SPECIAL_ROOT_SLICE;
- r = unit_add_cgroup(u, b);
+ r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice);
if (r < 0)
- goto fail;
+ return r;
- if (ret)
- *ret = b;
+ unit_ref_set(&u->slice, slice);
+ return 0;
+}
- return 1;
+const char *unit_slice_name(Unit *u) {
+ assert(u);
-fail:
- free(path);
- free(controller);
- free(b);
+ if (!UNIT_ISSET(u->slice))
+ return NULL;
- return r;
+ return UNIT_DEREF(u->slice)->id;
}
-static int unit_add_one_default_cgroup(Unit *u, const char *controller) {
- CGroupBonding *b = NULL;
- int r = -ENOMEM;
+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);
- if (!controller)
- controller = SYSTEMD_CGROUP_CONTROLLER;
-
- if (cgroup_bonding_find_list(u->cgroup_bondings, controller))
- return 0;
-
- b = new0(CGroupBonding, 1);
- if (!b)
+ t = unit_name_change_suffix(u->id, type);
+ if (!t)
return -ENOMEM;
- b->controller = strdup(controller);
- if (!b->controller)
- goto fail;
-
- b->path = unit_default_cgroup_path(u);
- if (!b->path)
- goto fail;
-
- b->ours = true;
- b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER);
-
- r = unit_add_cgroup(u, b);
- if (r < 0)
- goto fail;
-
- return 1;
-
-fail:
- free(b->path);
- free(b->controller);
- free(b);
+ assert(!unit_has_name(u, t));
+ r = manager_load_unit(u->manager, t, NULL, NULL, _found);
+ assert(r < 0 || *_found != u);
return r;
}
-int unit_add_default_cgroups(Unit *u) {
- CGroupAttribute *a;
- char **c;
- int r;
-
+int unit_watch_bus_name(Unit *u, const char *name) {
assert(u);
+ assert(name);
- /* Adds in the default cgroups, if they weren't specified
- * otherwise. */
-
- if (!u->manager->cgroup_hierarchy)
- return 0;
-
- r = unit_add_one_default_cgroup(u, NULL);
- if (r < 0)
- return r;
+ /* Watch a specific name on the bus. We only support one unit
+ * watching each name for now. */
- STRV_FOREACH(c, u->manager->default_controllers)
- unit_add_one_default_cgroup(u, *c);
+ return hashmap_put(u->manager->watch_bus, name, u);
+}
- LIST_FOREACH(by_unit, a, u->cgroup_attributes)
- unit_add_one_default_cgroup(u, a->controller);
+void unit_unwatch_bus_name(Unit *u, const char *name) {
+ assert(u);
+ assert(name);
- return 0;
+ hashmap_remove_value(u->manager->watch_bus, name, u);
}
-CGroupBonding* unit_get_default_cgroup(Unit *u) {
+bool unit_can_serialize(Unit *u) {
assert(u);
- return cgroup_bonding_find_list(u->cgroup_bondings, NULL);
+ return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
}
-int unit_add_cgroup_attribute(
- Unit *u,
- const CGroupSemantics *semantics,
- const char *controller,
- const char *name,
- const char *value,
- CGroupAttribute **ret) {
-
- _cleanup_free_ char *c = NULL;
- CGroupAttribute *a;
+int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs) {
int r;
assert(u);
- assert(value);
-
- if (semantics) {
- /* Semantics always take precedence */
- if (semantics->name)
- name = semantics->name;
-
- if (semantics->controller)
- controller = semantics->controller;
- }
+ assert(f);
+ assert(fds);
- if (!name)
- return -EINVAL;
+ if (unit_can_serialize(u)) {
+ ExecRuntime *rt;
- if (!controller) {
- r = cg_controller_from_attr(name, &c);
+ r = UNIT_VTABLE(u)->serialize(u, f, fds);
if (r < 0)
- return -EINVAL;
+ return r;
- controller = c;
+ rt = unit_get_exec_runtime(u);
+ if (rt) {
+ r = exec_runtime_serialize(rt, u, f, fds);
+ if (r < 0)
+ return r;
+ }
}
- if (!controller || streq(controller, SYSTEMD_CGROUP_CONTROLLER))
- return -EINVAL;
+ dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp);
+ dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp);
+ dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp);
+ dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp);
+ dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp);
- if (!filename_is_safe(name))
- return -EINVAL;
+ if (dual_timestamp_is_set(&u->condition_timestamp))
+ unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result));
- if (!filename_is_safe(controller))
- return -EINVAL;
+ unit_serialize_item(u, f, "transient", yes_no(u->transient));
- /* Check if this attribute already exists. Note that we will
- * explicitly check for the value here too, as there are
- * attributes which accept multiple values. */
- a = cgroup_attribute_find_list(u->cgroup_attributes, controller, name);
- if (a) {
- if (streq(value, a->value)) {
- /* Exactly the same value is always OK, let's ignore this */
- if (ret)
- *ret = a;
+ if (u->cgroup_path)
+ unit_serialize_item(u, f, "cgroup", u->cgroup_path);
- return 0;
+ if (serialize_jobs) {
+ if (u->job) {
+ fprintf(f, "job\n");
+ job_serialize(u->job, f, fds);
}
- if (semantics && !semantics->multiple) {
- char *v;
-
- /* If this is a single-item entry, we can
- * simply patch the existing attribute */
-
- v = strdup(value);
- if (!v)
- return -ENOMEM;
-
- free(a->value);
- a->value = v;
-
- if (ret)
- *ret = a;
- return 1;
+ if (u->nop_job) {
+ fprintf(f, "job\n");
+ job_serialize(u->nop_job, f, fds);
}
}
- a = new0(CGroupAttribute, 1);
- if (!a)
- return -ENOMEM;
+ /* End marker */
+ fputc('\n', f);
+ return 0;
+}
- if (c) {
- a->controller = c;
- c = NULL;
- } else
- a->controller = strdup(controller);
+void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
+ va_list ap;
- a->name = strdup(name);
- a->value = strdup(value);
-
- if (!a->controller || !a->name || !a->value) {
- free(a->controller);
- free(a->name);
- free(a->value);
- free(a);
- return -ENOMEM;
- }
-
- a->semantics = semantics;
- a->unit = u;
-
- LIST_PREPEND(CGroupAttribute, by_unit, u->cgroup_attributes, a);
-
- if (ret)
- *ret = a;
-
- return 1;
-}
-
-int unit_load_related_unit(Unit *u, const char *type, Unit **_found) {
- char *t;
- int r;
-
- assert(u);
- assert(type);
- assert(_found);
-
- if (!(t = unit_name_change_suffix(u->id, type)))
- return -ENOMEM;
-
- assert(!unit_has_name(u, t));
-
- r = manager_load_unit(u->manager, t, NULL, NULL, _found);
- free(t);
-
- assert(r < 0 || *_found != u);
-
- return r;
-}
-
-int unit_get_related_unit(Unit *u, const char *type, Unit **_found) {
- Unit *found;
- char *t;
-
- assert(u);
- assert(type);
- assert(_found);
-
- if (!(t = unit_name_change_suffix(u->id, type)))
- return -ENOMEM;
-
- assert(!unit_has_name(u, t));
-
- found = manager_get_unit(u->manager, t);
- free(t);
-
- if (!found)
- return -ENOENT;
-
- *_found = found;
- return 0;
-}
-
-int unit_watch_bus_name(Unit *u, const char *name) {
- assert(u);
- assert(name);
-
- /* Watch a specific name on the bus. We only support one unit
- * watching each name for now. */
-
- return hashmap_put(u->manager->watch_bus, name, u);
-}
-
-void unit_unwatch_bus_name(Unit *u, const char *name) {
- assert(u);
- assert(name);
-
- hashmap_remove_value(u->manager->watch_bus, name, u);
-}
-
-bool unit_can_serialize(Unit *u) {
- assert(u);
-
- return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
-}
-
-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))
- return 0;
-
- if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
- return r;
-
-
- if (serialize_jobs) {
- if (u->job) {
- fprintf(f, "job\n");
- job_serialize(u->job, f, fds);
- }
-
- if (u->nop_job) {
- fprintf(f, "job\n");
- job_serialize(u->nop_job, f, fds);
- }
- }
-
- dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp);
- dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp);
- dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp);
- dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp);
- dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp);
-
- if (dual_timestamp_is_set(&u->condition_timestamp))
- unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result));
-
- /* End marker */
- fputc('\n', f);
- return 0;
-}
-
-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);
+ assert(u);
+ assert(f);
+ assert(key);
+ assert(format);
fputs(key, f);
fputc('=', f);
}
int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
+ ExecRuntime **rt = NULL;
+ size_t offset;
int r;
assert(u);
assert(f);
assert(fds);
- if (!unit_can_serialize(u))
- return 0;
+ offset = UNIT_VTABLE(u)->exec_runtime_offset;
+ if (offset > 0)
+ rt = (ExecRuntime**) ((uint8_t*) u + offset);
for (;;) {
char line[LINE_MAX], *l, *v;
} else if (streq(l, "condition-result")) {
int b;
- if ((b = parse_boolean(v)) < 0)
+ b = parse_boolean(v);
+ if (b < 0)
log_debug("Failed to parse condition result value %s", v);
else
u->condition_result = b;
continue;
+
+ } else if (streq(l, "transient")) {
+ int b;
+
+ b = parse_boolean(v);
+ if (b < 0)
+ log_debug("Failed to parse transient bool %s", v);
+ else
+ u->transient = b;
+
+ continue;
+ } else if (streq(l, "cgroup")) {
+ char *s;
+
+ s = strdup(v);
+ if (!s)
+ return -ENOMEM;
+
+ if (u->cgroup_path) {
+ void *p;
+
+ p = hashmap_remove(u->manager->cgroup_unit, u->cgroup_path);
+ log_info("Removing cgroup_path %s from hashmap (%p)",
+ u->cgroup_path, p);
+ free(u->cgroup_path);
+ }
+
+ u->cgroup_path = s;
+ assert(hashmap_put(u->manager->cgroup_unit, s, u) == 1);
+
+ continue;
}
- if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
- return r;
+ if (unit_can_serialize(u)) {
+ if (rt) {
+ r = exec_runtime_deserialize_item(rt, u, l, v, fds);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ continue;
+ }
+
+ r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds);
+ if (r < 0)
+ return r;
+ }
}
}
int unit_add_node_link(Unit *u, const char *what, bool wants) {
Unit *device;
- char *e;
+ _cleanup_free_ char *e = NULL;
int r;
assert(u);
return -ENOMEM;
r = manager_load_unit(u->manager, e, NULL, NULL, &device);
- free(e);
+
if (r < 0)
return r;
}
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;
}
bool unit_need_daemon_reload(Unit *u) {
return NULL;
}
-bool unit_pending_inactive(Unit *u) {
+bool unit_stop_pending(Unit *u) {
+ assert(u);
+
+ /* This call does check the current state of the unit. It's
+ * hence useful to be called from state change calls of the
+ * unit itself, where the state isn't updated yet. This is
+ * different from unit_inactive_or_pending() which checks both
+ * the current state and for a queued job. */
+
+ return u->job && u->job->type == JOB_STOP;
+}
+
+bool unit_inactive_or_pending(Unit *u) {
assert(u);
/* Returns true if the unit is inactive or going down */
if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u)))
return true;
- if (u->job && u->job->type == JOB_STOP)
+ if (unit_stop_pending(u))
return true;
return false;
}
-bool unit_pending_active(Unit *u) {
+bool unit_active_or_pending(Unit *u) {
assert(u);
/* Returns true if the unit is active or going up */
return false;
}
-int unit_kill(Unit *u, KillWho w, int signo, DBusError *error) {
+int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error) {
assert(u);
assert(w >= 0 && w < _KILL_WHO_MAX);
assert(signo > 0);
return UNIT_VTABLE(u)->kill(u, w, signo, error);
}
+static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) {
+ Set *pid_set;
+ int r;
+
+ pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ if (!pid_set)
+ return NULL;
+
+ /* Exclude the main/control pids from being killed via the cgroup */
+ if (main_pid > 0) {
+ r = set_put(pid_set, LONG_TO_PTR(main_pid));
+ if (r < 0)
+ goto fail;
+ }
+
+ if (control_pid > 0) {
+ r = set_put(pid_set, LONG_TO_PTR(control_pid));
+ if (r < 0)
+ goto fail;
+ }
+
+ return pid_set;
+
+fail:
+ set_free(pid_set);
+ return NULL;
+}
+
int unit_kill_common(
Unit *u,
KillWho who,
int signo,
pid_t main_pid,
pid_t control_pid,
- DBusError *error) {
+ sd_bus_error *error) {
int r = 0;
if (who == KILL_MAIN && main_pid <= 0) {
if (main_pid < 0)
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type));
+ sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no main processes", unit_type_to_string(u->type));
else
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
+ sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
return -ESRCH;
}
if (who == KILL_CONTROL && control_pid <= 0) {
if (control_pid < 0)
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type));
+ sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_PROCESS, "%s units have no control processes", unit_type_to_string(u->type));
else
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
+ sd_bus_error_set_const(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
return -ESRCH;
}
if (kill(main_pid, signo) < 0)
r = -errno;
- if (who == KILL_ALL) {
+ if (who == KILL_ALL && u->cgroup_path) {
_cleanup_set_free_ Set *pid_set = NULL;
int q;
- pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ /* Exclude the main/control pids from being killed via the cgroup */
+ pid_set = unit_pid_set(main_pid, control_pid);
if (!pid_set)
return -ENOMEM;
- /* Exclude the control/main pid from being killed via the cgroup */
- if (control_pid > 0) {
- q = set_put(pid_set, LONG_TO_PTR(control_pid));
- if (q < 0)
- return q;
- }
-
- if (main_pid > 0) {
- q = set_put(pid_set, LONG_TO_PTR(main_pid));
- if (q < 0)
- return q;
- }
-
- q = cgroup_bonding_kill_list(u->cgroup_bondings, signo, false, false, pid_set, NULL);
+ q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set);
if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT)
r = q;
}
if (u->unit_file_state < 0 && u->fragment_path)
u->unit_file_state = unit_file_get_state(
u->manager->running_as == SYSTEMD_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
- NULL, path_get_file_name(u->fragment_path));
+ NULL, basename(u->fragment_path));
return u->unit_file_state;
}
unit_ref_unset(ref);
ref->unit = u;
- LIST_PREPEND(UnitRef, refs, u->refs, ref);
+ LIST_PREPEND(refs, u->refs, ref);
return u;
}
if (!ref->unit)
return;
- LIST_REMOVE(UnitRef, refs, ref->unit->refs, ref);
+ LIST_REMOVE(refs, ref->unit->refs, ref);
ref->unit = NULL;
}
-int unit_add_one_mount_link(Unit *u, Mount *m) {
- char **i;
+int unit_patch_contexts(Unit *u) {
+ CGroupContext *cc;
+ ExecContext *ec;
+ unsigned i;
+ int r;
assert(u);
- assert(m);
- if (u->load_state != UNIT_LOADED ||
- UNIT(m)->load_state != UNIT_LOADED)
- return 0;
+ /* Patch in the manager defaults into the exec and cgroup
+ * contexts, _after_ the rest of the settings have been
+ * initialized */
- STRV_FOREACH(i, u->requires_mounts_for) {
+ ec = unit_get_exec_context(u);
+ if (ec) {
+ /* This only copies in the ones that need memory */
+ for (i = 0; i < _RLIMIT_MAX; i++)
+ if (u->manager->rlimit[i] && !ec->rlimit[i]) {
+ ec->rlimit[i] = newdup(struct rlimit, u->manager->rlimit[i], 1);
+ if (!ec->rlimit[i])
+ return -ENOMEM;
+ }
- if (UNIT(m) == u)
- continue;
+ if (u->manager->running_as == SYSTEMD_USER &&
+ !ec->working_directory) {
- if (!path_startswith(*i, m->where))
- continue;
+ r = get_home_dir(&ec->working_directory);
+ if (r < 0)
+ return r;
+ }
+
+ if (u->manager->running_as == SYSTEMD_USER &&
+ (ec->syscall_whitelist ||
+ !set_isempty(ec->syscall_filter) ||
+ !set_isempty(ec->syscall_archs) ||
+ ec->address_families_whitelist ||
+ !set_isempty(ec->address_families)))
+ ec->no_new_privileges = true;
- return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true);
+ if (ec->private_devices)
+ ec->capability_bounding_set_drop |= (uint64_t) 1ULL << (uint64_t) CAP_MKNOD;
+ }
+
+ cc = unit_get_cgroup_context(u);
+ if (cc) {
+
+ if (ec &&
+ ec->private_devices &&
+ cc->device_policy == CGROUP_AUTO)
+ cc->device_policy = CGROUP_CLOSED;
}
return 0;
}
-int unit_add_mount_links(Unit *u) {
- Unit *other;
- int r;
+ExecContext *unit_get_exec_context(Unit *u) {
+ size_t offset;
+ assert(u);
+
+ if (u->type < 0)
+ return NULL;
+ offset = UNIT_VTABLE(u)->exec_context_offset;
+ if (offset <= 0)
+ return NULL;
+
+ return (ExecContext*) ((uint8_t*) u + offset);
+}
+
+KillContext *unit_get_kill_context(Unit *u) {
+ size_t offset;
assert(u);
- LIST_FOREACH(units_by_type, other, u->manager->units_by_type[UNIT_MOUNT]) {
- r = unit_add_one_mount_link(u, MOUNT(other));
- if (r < 0)
- return r;
- }
+ if (u->type < 0)
+ return NULL;
- return 0;
+ offset = UNIT_VTABLE(u)->kill_context_offset;
+ if (offset <= 0)
+ return NULL;
+
+ return (KillContext*) ((uint8_t*) u + offset);
}
-int unit_exec_context_defaults(Unit *u, ExecContext *c) {
- unsigned i;
- int r;
+CGroupContext *unit_get_cgroup_context(Unit *u) {
+ size_t offset;
- assert(u);
- assert(c);
+ if (u->type < 0)
+ return NULL;
- /* This only copies in the ones that need memory */
+ offset = UNIT_VTABLE(u)->cgroup_context_offset;
+ if (offset <= 0)
+ return NULL;
- for (i = 0; i < RLIMIT_NLIMITS; 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 -ENOMEM;
- }
+ return (CGroupContext*) ((uint8_t*) u + offset);
+}
+
+ExecRuntime *unit_get_exec_runtime(Unit *u) {
+ size_t offset;
- if (u->manager->running_as == SYSTEMD_USER &&
- !c->working_directory) {
+ if (u->type < 0)
+ return NULL;
- r = get_home_dir(&c->working_directory);
- if (r < 0)
- return r;
+ offset = UNIT_VTABLE(u)->exec_runtime_offset;
+ if (offset <= 0)
+ return NULL;
+
+ return *(ExecRuntime**) ((uint8_t*) u + offset);
+}
+
+static int unit_drop_in_dir(Unit *u, UnitSetPropertiesMode mode, bool transient, char **dir) {
+ if (u->manager->running_as == SYSTEMD_USER) {
+ int r;
+
+ r = user_config_home(dir);
+ if (r == 0)
+ return -ENOENT;
+ return r;
}
+ if (mode == UNIT_PERSISTENT && !transient)
+ *dir = strdup("/etc/systemd/system");
+ else
+ *dir = strdup("/run/systemd/system");
+ if (!*dir)
+ return -ENOMEM;
+
return 0;
}
-ExecContext *unit_get_exec_context(Unit *u) {
- size_t offset;
+static int unit_drop_in_file(Unit *u,
+ UnitSetPropertiesMode mode, const char *name, char **p, char **q) {
+ _cleanup_free_ char *dir = NULL;
+ int r;
+
assert(u);
- offset = UNIT_VTABLE(u)->exec_context_offset;
- if (offset <= 0)
- return NULL;
+ r = unit_drop_in_dir(u, mode, u->transient, &dir);
+ if (r < 0)
+ return r;
- return (ExecContext*) ((uint8_t*) u + offset);
+ return drop_in_file(dir, u->id, 50, name, p, q);
}
-static int drop_in_file(Unit *u, bool runtime, const char *name, char **_p, char **_q) {
- char *p, *q;
+int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) {
+
+ _cleanup_free_ char *dir = NULL;
int r;
assert(u);
- assert(name);
- assert(_p);
- assert(_q);
- if (u->manager->running_as == SYSTEMD_USER && runtime)
- return -ENOTSUP;
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
+ return 0;
- if (!filename_is_safe(name))
- return -EINVAL;
+ r = unit_drop_in_dir(u, mode, u->transient, &dir);
+ if (r < 0)
+ return r;
- if (u->manager->running_as == SYSTEMD_USER) {
- _cleanup_free_ char *c = NULL;
+ return write_drop_in(dir, u->id, 50, name, data);
+}
- r = user_config_home(&c);
- if (r < 0)
- return r;
- if (r == 0)
- return -ENOENT;
+int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) {
+ _cleanup_free_ char *p = NULL;
+ va_list ap;
+ int r;
- p = strjoin(c, "/", u->id, ".d", NULL);
- } else if (runtime)
- p = strjoin("/run/systemd/system/", u->id, ".d", NULL);
- else
- p = strjoin("/etc/systemd/system/", u->id, ".d", NULL);
- if (!p)
+ assert(u);
+ assert(name);
+ assert(format);
+
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
+ return 0;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0)
return -ENOMEM;
- q = strjoin(p, "/50-", name, ".conf", NULL);
- if (!q) {
- free(p);
+ return unit_write_drop_in(u, mode, name, p);
+}
+
+int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) {
+ _cleanup_free_ char *ndata = NULL;
+
+ assert(u);
+ assert(name);
+ assert(data);
+
+ if (!UNIT_VTABLE(u)->private_section)
+ return -EINVAL;
+
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
+ return 0;
+
+ ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL);
+ if (!ndata)
return -ENOMEM;
- }
- *_p = p;
- *_q = q;
- return 0;
+ return unit_write_drop_in(u, mode, name, ndata);
}
-int unit_write_drop_in(Unit *u, bool runtime, const char *name, const char *data) {
- _cleanup_free_ char *p = NULL, *q = NULL;
+int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) {
+ _cleanup_free_ char *p = NULL;
+ va_list ap;
int r;
assert(u);
+ assert(name);
+ assert(format);
+
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
+ return 0;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
- r = drop_in_file(u, runtime, name, &p, &q);
if (r < 0)
- return r;
+ return -ENOMEM;
- mkdir_p(p, 0755);
- return write_string_file_atomic_label(q, data);
+ return unit_write_drop_in_private(u, mode, name, p);
}
-int unit_remove_drop_in(Unit *u, bool runtime, const char *name) {
+int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) {
_cleanup_free_ char *p = NULL, *q = NULL;
int r;
assert(u);
- r = drop_in_file(u, runtime, name, &p, &q);
+ if (!IN_SET(mode, UNIT_PERSISTENT, UNIT_RUNTIME))
+ return 0;
+
+ r = unit_drop_in_file(u, mode, name, &p, &q);
+ if (r < 0)
+ return r;
+
if (unlink(q) < 0)
- r = -errno;
+ r = errno == ENOENT ? 0 : -errno;
else
- r = 0;
+ r = 1;
rmdir(p);
return r;
}
+int unit_make_transient(Unit *u) {
+ int r;
+
+ assert(u);
+
+ u->load_state = UNIT_STUB;
+ u->load_error = 0;
+ u->transient = true;
+
+ free(u->fragment_path);
+ u->fragment_path = NULL;
+
+ if (u->manager->running_as == SYSTEMD_USER) {
+ _cleanup_free_ char *c = NULL;
+
+ r = user_config_home(&c);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ENOENT;
+
+ u->fragment_path = strjoin(c, "/", u->id, NULL);
+ if (!u->fragment_path)
+ return -ENOMEM;
+
+ mkdir_p(c, 0755);
+ } else {
+ u->fragment_path = strappend("/run/systemd/system/", u->id);
+ if (!u->fragment_path)
+ return -ENOMEM;
+
+ mkdir_p("/run/systemd/system", 0755);
+ }
+
+ return write_string_file_atomic_label(u->fragment_path, "# Transient stub");
+}
+
int unit_kill_context(
Unit *u,
KillContext *c,
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));
- } else
- wait_for_exit = !main_pid_alien;
+ log_warning_unit(u->id, "Failed to kill main process " PID_FMT " (%s): %s", main_pid, strna(comm), strerror(-r));
+ } else {
+ if (!main_pid_alien)
+ wait_for_exit = true;
+
+ if (c->send_sighup && !sigkill)
+ kill(main_pid, SIGHUP);
+ }
}
if (control_pid > 0) {
_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));
- } else
+ 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 && !sigkill)
+ kill(control_pid, SIGHUP);
+ }
}
- if (c->kill_mode == KILL_CONTROL_GROUP) {
+ if ((c->kill_mode == KILL_CONTROL_GROUP || (c->kill_mode == KILL_MIXED && sigkill)) && u->cgroup_path) {
_cleanup_set_free_ Set *pid_set = NULL;
- pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ /* Exclude the main/control pids from being killed via the cgroup */
+ pid_set = unit_pid_set(main_pid, control_pid);
if (!pid_set)
return -ENOMEM;
- /* Exclude the main/control pids from being killed via the cgroup */
- if (main_pid > 0) {
- r = set_put(pid_set, LONG_TO_PTR(main_pid));
- if (r < 0)
- return r;
+ r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set);
+ if (r < 0) {
+ if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
+ log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r));
+ } else if (r > 0) {
+
+ /* 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, false, true, false, pid_set);
+ }
}
+ }
- if (control_pid > 0) {
- r = set_put(pid_set, LONG_TO_PTR(control_pid));
- if (r < 0)
+ return wait_for_exit;
+}
+
+int unit_require_mounts_for(Unit *u, const char *path) {
+ char prefix[strlen(path) + 1], *p;
+ int r;
+
+ assert(u);
+ assert(path);
+
+ /* Registers a unit for requiring a certain path and all its
+ * prefixes. We keep a simple array of these paths in the
+ * unit, since its usually short. However, we build a prefix
+ * table for all possible prefixes so that new appearing mount
+ * units can easily determine which units to make themselves a
+ * dependency of. */
+
+ if (!path_is_absolute(path))
+ return -EINVAL;
+
+ p = strdup(path);
+ if (!p)
+ return -ENOMEM;
+
+ path_kill_slashes(p);
+
+ if (!path_is_safe(p)) {
+ free(p);
+ return -EPERM;
+ }
+
+ if (strv_contains(u->requires_mounts_for, p)) {
+ free(p);
+ return 0;
+ }
+
+ r = strv_consume(&u->requires_mounts_for, p);
+ if (r < 0)
+ return r;
+
+ PATH_FOREACH_PREFIX_MORE(prefix, p) {
+ Set *x;
+
+ x = hashmap_get(u->manager->units_requiring_mounts_for, prefix);
+ if (!x) {
+ char *q;
+
+ if (!u->manager->units_requiring_mounts_for) {
+ u->manager->units_requiring_mounts_for = hashmap_new(string_hash_func, string_compare_func);
+ if (!u->manager->units_requiring_mounts_for)
+ return -ENOMEM;
+ }
+
+ q = strdup(prefix);
+ if (!q)
+ return -ENOMEM;
+
+ x = set_new(NULL, NULL);
+ if (!x) {
+ free(q);
+ return -ENOMEM;
+ }
+
+ r = hashmap_put(u->manager->units_requiring_mounts_for, q, x);
+ if (r < 0) {
+ free(q);
+ set_free(x);
return r;
+ }
}
- r = cgroup_bonding_kill_list(u->cgroup_bondings, sig, true, false, pid_set, NULL);
- if (r < 0) {
- 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;
+ r = set_put(x, u);
+ if (r < 0)
+ return r;
}
- return wait_for_exit;
+ return 0;
+}
+
+int unit_setup_exec_runtime(Unit *u) {
+ ExecRuntime **rt;
+ size_t offset;
+ Iterator i;
+ Unit *other;
+
+ offset = UNIT_VTABLE(u)->exec_runtime_offset;
+ assert(offset > 0);
+
+ /* Check if ther already is an ExecRuntime for this unit? */
+ rt = (ExecRuntime**) ((uint8_t*) u + offset);
+ if (*rt)
+ return 0;
+
+ /* Try to get it from somebody else */
+ SET_FOREACH(other, u->dependencies[UNIT_JOINS_NAMESPACE_OF], i) {
+
+ *rt = unit_get_exec_runtime(other);
+ if (*rt) {
+ exec_runtime_ref(*rt);
+ return 0;
+ }
+ }
+
+ return exec_runtime_make(rt, unit_get_exec_context(u), u->id);
}
static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
[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",
};
~ianmdlvl / elogind.git / blobdiff