1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include <sys/epoll.h>
26 #include <sys/timerfd.h>
35 #include "load-fragment.h"
36 #include "load-dropin.h"
38 #include "unit-name.h"
39 #include "specifier.h"
40 #include "dbus-unit.h"
43 const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
44 [UNIT_SERVICE] = &service_vtable,
45 [UNIT_TIMER] = &timer_vtable,
46 [UNIT_SOCKET] = &socket_vtable,
47 [UNIT_TARGET] = &target_vtable,
48 [UNIT_DEVICE] = &device_vtable,
49 [UNIT_MOUNT] = &mount_vtable,
50 [UNIT_AUTOMOUNT] = &automount_vtable,
51 [UNIT_SNAPSHOT] = &snapshot_vtable,
52 [UNIT_SWAP] = &swap_vtable,
53 [UNIT_PATH] = &path_vtable
56 Unit *unit_new(Manager *m) {
61 if (!(u = new0(Unit, 1)))
64 if (!(u->meta.names = set_new(string_hash_func, string_compare_func))) {
70 u->meta.type = _UNIT_TYPE_INVALID;
71 u->meta.deserialized_job = _JOB_TYPE_INVALID;
72 u->meta.default_dependencies = true;
77 bool unit_has_name(Unit *u, const char *name) {
81 return !!set_get(u->meta.names, (char*) name);
84 int unit_add_name(Unit *u, const char *text) {
86 char *s = NULL, *i = NULL;
92 if (unit_name_is_template(text)) {
93 if (!u->meta.instance)
96 s = unit_name_replace_instance(text, u->meta.instance);
103 if (!unit_name_is_valid(s)) {
108 assert_se((t = unit_name_to_type(s)) >= 0);
110 if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) {
115 if ((r = unit_name_to_instance(s, &i)) < 0)
118 if (i && unit_vtable[t]->no_instances)
121 if (u->meta.type != _UNIT_TYPE_INVALID && !streq_ptr(u->meta.instance, i)) {
126 if (unit_vtable[t]->no_alias &&
127 !set_isempty(u->meta.names) &&
128 !set_get(u->meta.names, s)) {
133 if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) {
138 if ((r = set_put(u->meta.names, s)) < 0) {
144 if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) {
145 set_remove(u->meta.names, s);
149 if (u->meta.type == _UNIT_TYPE_INVALID) {
153 u->meta.instance = i;
155 LIST_PREPEND(Meta, units_per_type, u->meta.manager->units_per_type[t], &u->meta);
157 if (UNIT_VTABLE(u)->init)
158 UNIT_VTABLE(u)->init(u);
162 unit_add_to_dbus_queue(u);
172 int unit_choose_id(Unit *u, const char *name) {
178 if (unit_name_is_template(name)) {
180 if (!u->meta.instance)
183 if (!(t = unit_name_replace_instance(name, u->meta.instance)))
189 /* Selects one of the names of this unit as the id */
190 s = set_get(u->meta.names, (char*) name);
197 unit_add_to_dbus_queue(u);
202 int unit_set_description(Unit *u, const char *description) {
207 if (!(s = strdup(description)))
210 free(u->meta.description);
211 u->meta.description = s;
213 unit_add_to_dbus_queue(u);
217 bool unit_check_gc(Unit *u) {
220 if (u->meta.load_state == UNIT_STUB)
223 if (UNIT_VTABLE(u)->no_gc)
229 if (unit_active_state(u) != UNIT_INACTIVE)
232 if (UNIT_VTABLE(u)->check_gc)
233 if (UNIT_VTABLE(u)->check_gc(u))
239 void unit_add_to_load_queue(Unit *u) {
241 assert(u->meta.type != _UNIT_TYPE_INVALID);
243 if (u->meta.load_state != UNIT_STUB || u->meta.in_load_queue)
246 LIST_PREPEND(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
247 u->meta.in_load_queue = true;
250 void unit_add_to_cleanup_queue(Unit *u) {
253 if (u->meta.in_cleanup_queue)
256 LIST_PREPEND(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta);
257 u->meta.in_cleanup_queue = true;
260 void unit_add_to_gc_queue(Unit *u) {
263 if (u->meta.in_gc_queue || u->meta.in_cleanup_queue)
266 if (unit_check_gc(u))
269 LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
270 u->meta.in_gc_queue = true;
272 u->meta.manager->n_in_gc_queue ++;
274 if (u->meta.manager->gc_queue_timestamp <= 0)
275 u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC);
278 void unit_add_to_dbus_queue(Unit *u) {
280 assert(u->meta.type != _UNIT_TYPE_INVALID);
282 if (u->meta.load_state == UNIT_STUB || u->meta.in_dbus_queue)
285 /* Shortcut things if nobody cares */
286 if (!bus_has_subscriber(u->meta.manager)) {
287 u->meta.sent_dbus_new_signal = true;
291 LIST_PREPEND(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta);
292 u->meta.in_dbus_queue = true;
295 static void bidi_set_free(Unit *u, Set *s) {
301 /* Frees the set and makes sure we are dropped from the
302 * inverse pointers */
304 SET_FOREACH(other, s, i) {
307 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
308 set_remove(other->meta.dependencies[d], u);
310 unit_add_to_gc_queue(other);
316 void unit_free(Unit *u) {
323 bus_unit_send_removed_signal(u);
325 if (u->meta.load_state != UNIT_STUB)
326 if (UNIT_VTABLE(u)->done)
327 UNIT_VTABLE(u)->done(u);
329 SET_FOREACH(t, u->meta.names, i)
330 hashmap_remove_value(u->meta.manager->units, t, u);
333 job_free(u->meta.job);
335 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
336 bidi_set_free(u, u->meta.dependencies[d]);
338 if (u->meta.type != _UNIT_TYPE_INVALID)
339 LIST_REMOVE(Meta, units_per_type, u->meta.manager->units_per_type[u->meta.type], &u->meta);
341 if (u->meta.in_load_queue)
342 LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
344 if (u->meta.in_dbus_queue)
345 LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta);
347 if (u->meta.in_cleanup_queue)
348 LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta);
350 if (u->meta.in_gc_queue) {
351 LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
352 u->meta.manager->n_in_gc_queue--;
355 cgroup_bonding_free_list(u->meta.cgroup_bondings);
357 free(u->meta.description);
358 free(u->meta.fragment_path);
360 set_free_free(u->meta.names);
362 free(u->meta.instance);
367 UnitActiveState unit_active_state(Unit *u) {
370 if (u->meta.load_state == UNIT_MERGED)
371 return unit_active_state(unit_follow_merge(u));
373 /* After a reload it might happen that a unit is not correctly
374 * loaded but still has a process around. That's why we won't
375 * shortcut failed loading to UNIT_INACTIVE_MAINTENANCE. */
377 return UNIT_VTABLE(u)->active_state(u);
380 const char* unit_sub_state_to_string(Unit *u) {
383 return UNIT_VTABLE(u)->sub_state_to_string(u);
386 static void complete_move(Set **s, Set **other) {
394 set_move(*s, *other);
401 static void merge_names(Unit *u, Unit *other) {
408 complete_move(&u->meta.names, &other->meta.names);
410 set_free_free(other->meta.names);
411 other->meta.names = NULL;
412 other->meta.id = NULL;
414 SET_FOREACH(t, u->meta.names, i)
415 assert_se(hashmap_replace(u->meta.manager->units, t, u) == 0);
418 static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) {
425 assert(d < _UNIT_DEPENDENCY_MAX);
427 SET_FOREACH(back, other->meta.dependencies[d], i) {
430 for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++)
431 if ((r = set_remove_and_put(back->meta.dependencies[k], other, u)) < 0) {
434 set_remove(back->meta.dependencies[k], other);
436 assert(r == -ENOENT);
440 complete_move(&u->meta.dependencies[d], &other->meta.dependencies[d]);
442 set_free(other->meta.dependencies[d]);
443 other->meta.dependencies[d] = NULL;
446 int unit_merge(Unit *u, Unit *other) {
451 assert(u->meta.manager == other->meta.manager);
452 assert(u->meta.type != _UNIT_TYPE_INVALID);
454 other = unit_follow_merge(other);
459 if (u->meta.type != other->meta.type)
462 if (!streq_ptr(u->meta.instance, other->meta.instance))
465 if (other->meta.load_state != UNIT_STUB &&
466 other->meta.load_state != UNIT_FAILED)
472 if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(unit_active_state(other)))
476 merge_names(u, other);
478 /* Merge dependencies */
479 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
480 merge_dependencies(u, other, d);
482 other->meta.load_state = UNIT_MERGED;
483 other->meta.merged_into = u;
485 /* If there is still some data attached to the other node, we
486 * don't need it anymore, and can free it. */
487 if (other->meta.load_state != UNIT_STUB)
488 if (UNIT_VTABLE(other)->done)
489 UNIT_VTABLE(other)->done(other);
491 unit_add_to_dbus_queue(u);
492 unit_add_to_cleanup_queue(other);
497 int unit_merge_by_name(Unit *u, const char *name) {
505 if (unit_name_is_template(name)) {
506 if (!u->meta.instance)
509 if (!(s = unit_name_replace_instance(name, u->meta.instance)))
515 if (!(other = manager_get_unit(u->meta.manager, name)))
516 r = unit_add_name(u, name);
518 r = unit_merge(u, other);
524 Unit* unit_follow_merge(Unit *u) {
527 while (u->meta.load_state == UNIT_MERGED)
528 assert_se(u = u->meta.merged_into);
533 int unit_add_exec_dependencies(Unit *u, ExecContext *c) {
539 if (c->std_output != EXEC_OUTPUT_KMSG &&
540 c->std_output != EXEC_OUTPUT_SYSLOG &&
541 c->std_error != EXEC_OUTPUT_KMSG &&
542 c->std_error != EXEC_OUTPUT_SYSLOG)
545 /* If syslog or kernel logging is requested, make sure our own
546 * logging daemon is run first. */
548 if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
551 if (u->meta.manager->running_as == MANAGER_SYSTEM)
552 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
558 const char *unit_description(Unit *u) {
561 if (u->meta.description)
562 return u->meta.description;
567 void unit_dump(Unit *u, FILE *f, const char *prefix) {
575 timestamp1[FORMAT_TIMESTAMP_MAX],
576 timestamp2[FORMAT_TIMESTAMP_MAX],
577 timestamp3[FORMAT_TIMESTAMP_MAX],
578 timestamp4[FORMAT_TIMESTAMP_MAX];
581 assert(u->meta.type >= 0);
585 p2 = strappend(prefix, "\t");
586 prefix2 = p2 ? p2 : prefix;
590 "%s\tDescription: %s\n"
592 "%s\tUnit Load State: %s\n"
593 "%s\tUnit Active State: %s\n"
594 "%s\tInactive Exit Timestamp: %s\n"
595 "%s\tActive Enter Timestamp: %s\n"
596 "%s\tActive Exit Timestamp: %s\n"
597 "%s\tInactive Enter Timestamp: %s\n"
598 "%s\tGC Check Good: %s\n",
600 prefix, unit_description(u),
601 prefix, strna(u->meta.instance),
602 prefix, unit_load_state_to_string(u->meta.load_state),
603 prefix, unit_active_state_to_string(unit_active_state(u)),
604 prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp.realtime)),
605 prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp.realtime)),
606 prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp.realtime)),
607 prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp.realtime)),
608 prefix, yes_no(unit_check_gc(u)));
610 SET_FOREACH(t, u->meta.names, i)
611 fprintf(f, "%s\tName: %s\n", prefix, t);
613 if (u->meta.fragment_path)
614 fprintf(f, "%s\tFragment Path: %s\n", prefix, u->meta.fragment_path);
616 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) {
619 SET_FOREACH(other, u->meta.dependencies[d], i)
620 fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id);
623 if (u->meta.load_state == UNIT_LOADED) {
625 "%s\tRecursive Stop: %s\n"
626 "%s\tStopWhenUnneeded: %s\n"
627 "%s\tOnlyByDependency: %s\n"
628 "%s\tDefaultDependencies: %s\n",
629 prefix, yes_no(u->meta.recursive_stop),
630 prefix, yes_no(u->meta.stop_when_unneeded),
631 prefix, yes_no(u->meta.only_by_dependency),
632 prefix, yes_no(u->meta.default_dependencies));
634 LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings)
635 fprintf(f, "%s\tControlGroup: %s:%s\n",
636 prefix, b->controller, b->path);
638 if (UNIT_VTABLE(u)->dump)
639 UNIT_VTABLE(u)->dump(u, f, prefix2);
641 } else if (u->meta.load_state == UNIT_MERGED)
643 "%s\tMerged into: %s\n",
644 prefix, u->meta.merged_into->meta.id);
647 job_dump(u->meta.job, f, prefix2);
652 /* Common implementation for multiple backends */
653 int unit_load_fragment_and_dropin(Unit *u) {
658 /* Load a .service file */
659 if ((r = unit_load_fragment(u)) < 0)
662 if (u->meta.load_state == UNIT_STUB)
665 /* Load drop-in directory data */
666 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
672 /* Common implementation for multiple backends */
673 int unit_load_fragment_and_dropin_optional(Unit *u) {
678 /* Same as unit_load_fragment_and_dropin(), but whether
679 * something can be loaded or not doesn't matter. */
681 /* Load a .service file */
682 if ((r = unit_load_fragment(u)) < 0)
685 if (u->meta.load_state == UNIT_STUB)
686 u->meta.load_state = UNIT_LOADED;
688 /* Load drop-in directory data */
689 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
695 /* Common implementation for multiple backends */
696 int unit_load_nop(Unit *u) {
699 if (u->meta.load_state == UNIT_STUB)
700 u->meta.load_state = UNIT_LOADED;
705 int unit_load(Unit *u) {
710 if (u->meta.in_load_queue) {
711 LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
712 u->meta.in_load_queue = false;
715 if (u->meta.type == _UNIT_TYPE_INVALID)
718 if (u->meta.load_state != UNIT_STUB)
721 if (UNIT_VTABLE(u)->load)
722 if ((r = UNIT_VTABLE(u)->load(u)) < 0)
725 if (u->meta.load_state == UNIT_STUB) {
730 assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into);
732 unit_add_to_dbus_queue(unit_follow_merge(u));
733 unit_add_to_gc_queue(u);
738 u->meta.load_state = UNIT_FAILED;
739 unit_add_to_dbus_queue(u);
741 log_debug("Failed to load configuration for %s: %s", u->meta.id, strerror(-r));
747 * -EBADR: This unit type does not support starting.
748 * -EALREADY: Unit is already started.
749 * -EAGAIN: An operation is already in progress. Retry later.
750 * -ECANCELED: Too many requests for now.
752 int unit_start(Unit *u) {
753 UnitActiveState state;
757 if (u->meta.load_state != UNIT_LOADED)
760 /* If this is already (being) started, then this will
761 * succeed. Note that this will even succeed if this unit is
762 * not startable by the user. This is relied on to detect when
763 * we need to wait for units and when waiting is finished. */
764 state = unit_active_state(u);
765 if (UNIT_IS_ACTIVE_OR_RELOADING(state))
768 /* If it is stopped, but we cannot start it, then fail */
769 if (!UNIT_VTABLE(u)->start)
772 /* We don't suppress calls to ->start() here when we are
773 * already starting, to allow this request to be used as a
774 * "hurry up" call, for example when the unit is in some "auto
775 * restart" state where it waits for a holdoff timer to elapse
776 * before it will start again. */
778 unit_add_to_dbus_queue(u);
780 unit_status_printf(u, "Starting %s...\n", unit_description(u));
782 return UNIT_VTABLE(u)->start(u);
785 bool unit_can_start(Unit *u) {
788 return !!UNIT_VTABLE(u)->start;
792 * -EBADR: This unit type does not support stopping.
793 * -EALREADY: Unit is already stopped.
794 * -EAGAIN: An operation is already in progress. Retry later.
796 int unit_stop(Unit *u) {
797 UnitActiveState state;
801 state = unit_active_state(u);
802 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(state))
805 if (!UNIT_VTABLE(u)->stop)
808 unit_add_to_dbus_queue(u);
810 unit_status_printf(u, "Stopping %s...\n", unit_description(u));
812 return UNIT_VTABLE(u)->stop(u);
816 * -EBADR: This unit type does not support reloading.
817 * -ENOEXEC: Unit is not started.
818 * -EAGAIN: An operation is already in progress. Retry later.
820 int unit_reload(Unit *u) {
821 UnitActiveState state;
825 if (u->meta.load_state != UNIT_LOADED)
828 if (!unit_can_reload(u))
831 state = unit_active_state(u);
832 if (unit_active_state(u) == UNIT_RELOADING)
835 if (unit_active_state(u) != UNIT_ACTIVE)
838 unit_add_to_dbus_queue(u);
839 return UNIT_VTABLE(u)->reload(u);
842 bool unit_can_reload(Unit *u) {
845 if (!UNIT_VTABLE(u)->reload)
848 if (!UNIT_VTABLE(u)->can_reload)
851 return UNIT_VTABLE(u)->can_reload(u);
854 static void unit_check_uneeded(Unit *u) {
860 /* If this service shall be shut down when unneeded then do
863 if (!u->meta.stop_when_unneeded)
866 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)))
869 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i)
870 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
873 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
874 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
877 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i)
878 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
881 log_debug("Service %s is not needed anymore. Stopping.", u->meta.id);
883 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
884 manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL);
887 static void retroactively_start_dependencies(Unit *u) {
892 assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)));
894 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i)
895 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
896 manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL);
898 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
899 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
900 manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL);
902 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i)
903 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
904 manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL);
906 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i)
907 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
908 manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL);
910 SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i)
911 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
912 manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL);
915 static void retroactively_stop_dependencies(Unit *u) {
920 assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u)));
922 if (u->meta.recursive_stop) {
923 /* Pull down units need us recursively if enabled */
924 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i)
925 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
926 manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL);
929 /* Garbage collect services that might not be needed anymore, if enabled */
930 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i)
931 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
932 unit_check_uneeded(other);
933 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
934 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
935 unit_check_uneeded(other);
936 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i)
937 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
938 unit_check_uneeded(other);
939 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i)
940 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
941 unit_check_uneeded(other);
942 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
943 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
944 unit_check_uneeded(other);
947 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
951 assert(os < _UNIT_ACTIVE_STATE_MAX);
952 assert(ns < _UNIT_ACTIVE_STATE_MAX);
954 /* Note that this is called for all low-level state changes,
955 * even if they might map to the same high-level
956 * UnitActiveState! That means that ns == os is OK an expected
957 * behaviour here. For example: if a mount point is remounted
958 * this function will be called too and the utmp code below
961 dual_timestamp_get(&ts);
963 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && !UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
964 u->meta.inactive_exit_timestamp = ts;
965 else if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
966 u->meta.inactive_enter_timestamp = ts;
968 if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
969 u->meta.active_enter_timestamp = ts;
970 else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
971 u->meta.active_exit_timestamp = ts;
973 timer_unit_notify(u, ns);
974 path_unit_notify(u, ns);
977 bool unexpected = false;
979 if (u->meta.job->state == JOB_WAITING)
981 /* So we reached a different state for this
982 * job. Let's see if we can run it now if it
983 * failed previously due to EAGAIN. */
984 job_add_to_run_queue(u->meta.job);
987 /* Let's check whether this state change constitutes a
988 * finished job, or maybe cotradicts a running job and
989 * hence needs to invalidate jobs. */
991 switch (u->meta.job->type) {
994 case JOB_VERIFY_ACTIVE:
996 if (UNIT_IS_ACTIVE_OR_RELOADING(ns))
997 job_finish_and_invalidate(u->meta.job, true);
998 else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) {
1000 job_finish_and_invalidate(u->meta.job, false);
1006 case JOB_RELOAD_OR_START:
1008 if (u->meta.job->state == JOB_RUNNING) {
1009 if (ns == UNIT_ACTIVE)
1010 job_finish_and_invalidate(u->meta.job, true);
1011 else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) {
1013 job_finish_and_invalidate(u->meta.job, false);
1021 case JOB_TRY_RESTART:
1023 if (ns == UNIT_INACTIVE)
1024 job_finish_and_invalidate(u->meta.job, true);
1025 else if (ns == UNIT_MAINTENANCE)
1026 job_finish_and_invalidate(u->meta.job, false);
1027 else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) {
1029 job_finish_and_invalidate(u->meta.job, false);
1035 assert_not_reached("Job type unknown");
1038 /* If this state change happened without being
1039 * requested by a job, then let's retroactively start
1040 * or stop dependencies */
1043 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns))
1044 retroactively_start_dependencies(u);
1045 else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
1046 retroactively_stop_dependencies(u);
1050 /* Some names are special */
1051 if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
1052 if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) {
1053 /* The bus just might have become available,
1054 * hence try to connect to it, if we aren't
1056 bus_init(u->meta.manager);
1059 if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
1060 /* The syslog daemon just might have become
1061 * available, hence try to connect to it, if
1062 * we aren't yet connected. */
1065 if (u->meta.type == UNIT_MOUNT)
1066 /* Another directory became available, let's
1067 * check if that is enough to write our utmp
1069 manager_write_utmp_reboot(u->meta.manager);
1071 if (u->meta.type == UNIT_TARGET)
1072 /* A target got activated, maybe this is a runlevel? */
1073 manager_write_utmp_runlevel(u->meta.manager, u);
1075 } else if (!UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
1077 if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
1078 /* The syslog daemon might just have
1079 * terminated, hence try to disconnect from
1083 /* We don't care about D-Bus here, since we'll get an
1084 * asynchronous notification for it anyway. */
1087 /* Maybe we finished startup and are now ready for being
1088 * stopped because unneeded? */
1089 unit_check_uneeded(u);
1091 unit_add_to_dbus_queue(u);
1092 unit_add_to_gc_queue(u);
1095 int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) {
1096 struct epoll_event ev;
1101 assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u));
1107 if (epoll_ctl(u->meta.manager->epoll_fd,
1108 w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD,
1120 void unit_unwatch_fd(Unit *u, Watch *w) {
1124 if (w->type == WATCH_INVALID)
1127 assert(w->type == WATCH_FD);
1128 assert(w->data.unit == u);
1129 assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
1132 w->type = WATCH_INVALID;
1133 w->data.unit = NULL;
1136 int unit_watch_pid(Unit *u, pid_t pid) {
1140 /* Watch a specific PID. We only support one unit watching
1141 * each PID for now. */
1143 return hashmap_put(u->meta.manager->watch_pids, UINT32_TO_PTR(pid), u);
1146 void unit_unwatch_pid(Unit *u, pid_t pid) {
1150 hashmap_remove_value(u->meta.manager->watch_pids, UINT32_TO_PTR(pid), u);
1153 int unit_watch_timer(Unit *u, usec_t delay, Watch *w) {
1154 struct itimerspec its;
1160 assert(w->type == WATCH_INVALID || (w->type == WATCH_TIMER && w->data.unit == u));
1162 /* This will try to reuse the old timer if there is one */
1164 if (w->type == WATCH_TIMER) {
1169 if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0)
1176 /* Set absolute time in the past, but not 0, since we
1177 * don't want to disarm the timer */
1178 its.it_value.tv_sec = 0;
1179 its.it_value.tv_nsec = 1;
1181 flags = TFD_TIMER_ABSTIME;
1183 timespec_store(&its.it_value, delay);
1187 /* This will also flush the elapse counter */
1188 if (timerfd_settime(fd, flags, &its, NULL) < 0)
1191 if (w->type == WATCH_INVALID) {
1192 struct epoll_event ev;
1196 ev.events = EPOLLIN;
1198 if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0)
1203 w->type = WATCH_TIMER;
1210 close_nointr_nofail(fd);
1215 void unit_unwatch_timer(Unit *u, Watch *w) {
1219 if (w->type == WATCH_INVALID)
1222 assert(w->type == WATCH_TIMER && w->data.unit == u);
1224 assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
1225 close_nointr_nofail(w->fd);
1228 w->type = WATCH_INVALID;
1229 w->data.unit = NULL;
1232 bool unit_job_is_applicable(Unit *u, JobType j) {
1234 assert(j >= 0 && j < _JOB_TYPE_MAX);
1238 case JOB_VERIFY_ACTIVE:
1244 case JOB_TRY_RESTART:
1245 return unit_can_start(u);
1248 return unit_can_reload(u);
1250 case JOB_RELOAD_OR_START:
1251 return unit_can_reload(u) && unit_can_start(u);
1254 assert_not_reached("Invalid job type");
1258 int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
1260 static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
1261 [UNIT_REQUIRES] = UNIT_REQUIRED_BY,
1262 [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
1263 [UNIT_WANTS] = UNIT_WANTED_BY,
1264 [UNIT_REQUISITE] = UNIT_REQUIRED_BY,
1265 [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
1266 [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID,
1267 [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID,
1268 [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID,
1269 [UNIT_CONFLICTS] = UNIT_CONFLICTS,
1270 [UNIT_BEFORE] = UNIT_AFTER,
1271 [UNIT_AFTER] = UNIT_BEFORE,
1272 [UNIT_REFERENCES] = UNIT_REFERENCED_BY,
1273 [UNIT_REFERENCED_BY] = UNIT_REFERENCES
1275 int r, q = 0, v = 0, w = 0;
1278 assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX);
1279 assert(inverse_table[d] != _UNIT_DEPENDENCY_INVALID);
1282 /* We won't allow dependencies on ourselves. We will not
1283 * consider them an error however. */
1287 if (UNIT_VTABLE(u)->no_requires &&
1288 (d == UNIT_REQUIRES ||
1289 d == UNIT_REQUIRES_OVERRIDABLE ||
1290 d == UNIT_REQUISITE ||
1291 d == UNIT_REQUISITE_OVERRIDABLE)) {
1295 if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0 ||
1296 (r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
1300 if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 ||
1301 (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0)
1304 if ((q = set_put(u->meta.dependencies[d], other)) < 0)
1307 if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
1312 if (add_reference) {
1313 if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) {
1318 if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0)
1322 unit_add_to_dbus_queue(u);
1327 set_remove(u->meta.dependencies[d], other);
1330 set_remove(other->meta.dependencies[inverse_table[d]], u);
1333 set_remove(u->meta.dependencies[UNIT_REFERENCES], other);
1338 int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) {
1343 if ((r = unit_add_dependency(u, d, other, add_reference)) < 0)
1346 if ((r = unit_add_dependency(u, e, other, add_reference)) < 0)
1352 static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) {
1356 assert(name || path);
1359 name = file_name_from_path(path);
1361 if (!unit_name_is_template(name)) {
1366 if (u->meta.instance)
1367 s = unit_name_replace_instance(name, u->meta.instance);
1371 if (!(i = unit_name_to_prefix(u->meta.id)))
1374 s = unit_name_replace_instance(name, i);
1385 int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
1391 assert(name || path);
1393 if (!(name = resolve_template(u, name, path, &s)))
1396 if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
1399 r = unit_add_dependency(u, d, other, add_reference);
1406 int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
1412 assert(name || path);
1414 if (!(name = resolve_template(u, name, path, &s)))
1417 if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
1420 r = unit_add_two_dependencies(u, d, e, other, add_reference);
1427 int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
1433 assert(name || path);
1435 if (!(name = resolve_template(u, name, path, &s)))
1438 if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
1441 r = unit_add_dependency(other, d, u, add_reference);
1448 int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
1454 assert(name || path);
1456 if (!(name = resolve_template(u, name, path, &s)))
1459 if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
1462 if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0)
1470 int set_unit_path(const char *p) {
1474 /* This is mostly for debug purposes */
1476 if (path_is_absolute(p)) {
1477 if (!(c = strdup(p)))
1480 if (!(cwd = get_current_dir_name()))
1483 r = asprintf(&c, "%s/%s", cwd, p);
1490 if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) {
1499 char *unit_dbus_path(Unit *u) {
1504 if (!(e = bus_path_escape(u->meta.id)))
1507 if (asprintf(&p, "/org/freedesktop/systemd1/unit/%s", e) < 0) {
1516 int unit_add_cgroup(Unit *u, CGroupBonding *b) {
1524 /* Ensure this hasn't been added yet */
1527 l = hashmap_get(u->meta.manager->cgroup_bondings, b->path);
1528 LIST_PREPEND(CGroupBonding, by_path, l, b);
1530 if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) {
1531 LIST_REMOVE(CGroupBonding, by_path, l, b);
1535 LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b);
1541 static char *default_cgroup_path(Unit *u) {
1547 if (u->meta.instance) {
1550 if (!(t = unit_name_template(u->meta.id)))
1553 r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance);
1556 r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id);
1558 return r < 0 ? NULL : p;
1561 int unit_add_cgroup_from_text(Unit *u, const char *name) {
1563 char *controller = NULL, *path = NULL;
1564 CGroupBonding *b = NULL;
1570 /* Detect controller name */
1571 n = strcspn(name, ":");
1574 (name[n] == ':' && name[n+1] == 0)) {
1576 /* Only controller name, no path? */
1578 if (!(path = default_cgroup_path(u)))
1584 /* Controller name, and path. */
1587 if (!path_is_absolute(p))
1590 if (!(path = strdup(p)))
1595 controller = strndup(name, n);
1597 controller = strdup(u->meta.manager->cgroup_controller);
1604 if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) {
1609 if (!(b = new0(CGroupBonding, 1))) {
1614 b->controller = controller;
1617 b->clean_up = false;
1619 if ((r = unit_add_cgroup(u, b)) < 0)
1632 int unit_add_default_cgroup(Unit *u) {
1638 /* Adds in the default cgroup data, if it wasn't specified yet */
1640 if (unit_get_default_cgroup(u))
1643 if (!(b = new0(CGroupBonding, 1)))
1646 if (!(b->controller = strdup(u->meta.manager->cgroup_controller)))
1649 if (!(b->path = default_cgroup_path(u)))
1655 if ((r = unit_add_cgroup(u, b)) < 0)
1662 free(b->controller);
1668 CGroupBonding* unit_get_default_cgroup(Unit *u) {
1671 return cgroup_bonding_find_list(u->meta.cgroup_bondings, u->meta.manager->cgroup_controller);
1674 int unit_load_related_unit(Unit *u, const char *type, Unit **_found) {
1682 if (!(t = unit_name_change_suffix(u->meta.id, type)))
1685 assert(!unit_has_name(u, t));
1687 r = manager_load_unit(u->meta.manager, t, NULL, _found);
1690 assert(r < 0 || *_found != u);
1695 int unit_get_related_unit(Unit *u, const char *type, Unit **_found) {
1703 if (!(t = unit_name_change_suffix(u->meta.id, type)))
1706 assert(!unit_has_name(u, t));
1708 found = manager_get_unit(u->meta.manager, t);
1718 static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
1722 return unit_name_to_prefix_and_instance(u->meta.id);
1725 static char *specifier_prefix(char specifier, void *data, void *userdata) {
1729 return unit_name_to_prefix(u->meta.id);
1732 static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) {
1738 if (!(p = unit_name_to_prefix(u->meta.id)))
1741 r = unit_name_unescape(p);
1747 static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) {
1751 if (u->meta.instance)
1752 return unit_name_unescape(u->meta.instance);
1757 char *unit_name_printf(Unit *u, const char* format) {
1760 * This will use the passed string as format string and
1761 * replace the following specifiers:
1763 * %n: the full id of the unit (foo@bar.waldo)
1764 * %N: the id of the unit without the suffix (foo@bar)
1765 * %p: the prefix (foo)
1766 * %i: the instance (bar)
1769 const Specifier table[] = {
1770 { 'n', specifier_string, u->meta.id },
1771 { 'N', specifier_prefix_and_instance, NULL },
1772 { 'p', specifier_prefix, NULL },
1773 { 'i', specifier_string, u->meta.instance },
1780 return specifier_printf(format, table, u);
1783 char *unit_full_printf(Unit *u, const char *format) {
1785 /* This is similar to unit_name_printf() but also supports
1788 const Specifier table[] = {
1789 { 'n', specifier_string, u->meta.id },
1790 { 'N', specifier_prefix_and_instance, NULL },
1791 { 'p', specifier_prefix, NULL },
1792 { 'P', specifier_prefix_unescaped, NULL },
1793 { 'i', specifier_string, u->meta.instance },
1794 { 'I', specifier_instance_unescaped, NULL },
1801 return specifier_printf(format, table, u);
1804 char **unit_full_printf_strv(Unit *u, char **l) {
1808 /* Applies unit_full_printf to every entry in l */
1813 if (!(r = new(char*, n+1)))
1816 for (i = l, j = r; *i; i++, j++)
1817 if (!(*j = unit_full_printf(u, *i)))
1833 int unit_watch_bus_name(Unit *u, const char *name) {
1837 /* Watch a specific name on the bus. We only support one unit
1838 * watching each name for now. */
1840 return hashmap_put(u->meta.manager->watch_bus, name, u);
1843 void unit_unwatch_bus_name(Unit *u, const char *name) {
1847 hashmap_remove_value(u->meta.manager->watch_bus, name, u);
1850 bool unit_can_serialize(Unit *u) {
1853 return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
1856 int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
1863 if (!unit_can_serialize(u))
1866 if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
1870 unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type));
1877 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
1888 va_start(ap, format);
1889 vfprintf(f, format, ap);
1895 void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) {
1901 fprintf(f, "%s=%s\n", key, value);
1904 int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
1911 if (!unit_can_serialize(u))
1915 char line[1024], *l, *v;
1918 if (!fgets(line, sizeof(line), f)) {
1930 k = strcspn(l, "=");
1938 if (streq(l, "job")) {
1941 if ((type = job_type_from_string(v)) < 0)
1942 log_debug("Failed to parse job type value %s", v);
1944 u->meta.deserialized_job = type;
1949 if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
1954 int unit_add_node_link(Unit *u, const char *what, bool wants) {
1964 /* Adds in links to the device node that this unit is based on */
1966 if (!is_device_path(what))
1969 if (!(e = unit_name_build_escape(what+1, NULL, ".device")))
1972 r = manager_load_unit(u->meta.manager, e, NULL, &device);
1978 if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, device, true)) < 0)
1982 if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0)
1988 int unit_coldplug(Unit *u) {
1993 if (UNIT_VTABLE(u)->coldplug)
1994 if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0)
1997 if (u->meta.deserialized_job >= 0) {
1998 if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_FAIL, false, NULL)) < 0)
2001 u->meta.deserialized_job = _JOB_TYPE_INVALID;
2007 void unit_status_printf(Unit *u, const char *format, ...) {
2013 if (!UNIT_VTABLE(u)->show_status)
2016 if (u->meta.manager->running_as != MANAGER_SYSTEM)
2019 if (!u->meta.manager->show_status)
2022 if (!manager_is_booting_or_shutting_down(u->meta.manager))
2025 va_start(ap, format);
2026 status_vprintf(format, ap);
2030 static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
2031 [UNIT_SERVICE] = "service",
2032 [UNIT_TIMER] = "timer",
2033 [UNIT_SOCKET] = "socket",
2034 [UNIT_TARGET] = "target",
2035 [UNIT_DEVICE] = "device",
2036 [UNIT_MOUNT] = "mount",
2037 [UNIT_AUTOMOUNT] = "automount",
2038 [UNIT_SNAPSHOT] = "snapshot",
2039 [UNIT_SWAP] = "swap"
2042 DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
2044 static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
2045 [UNIT_STUB] = "stub",
2046 [UNIT_LOADED] = "loaded",
2047 [UNIT_FAILED] = "failed",
2048 [UNIT_MERGED] = "merged"
2051 DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
2053 static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
2054 [UNIT_ACTIVE] = "active",
2055 [UNIT_RELOADING] = "reloading",
2056 [UNIT_INACTIVE] = "inactive",
2057 [UNIT_MAINTENANCE] = "maintenance",
2058 [UNIT_ACTIVATING] = "activating",
2059 [UNIT_DEACTIVATING] = "deactivating"
2062 DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState);
2064 static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
2065 [UNIT_REQUIRES] = "Requires",
2066 [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable",
2067 [UNIT_WANTS] = "Wants",
2068 [UNIT_REQUISITE] = "Requisite",
2069 [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable",
2070 [UNIT_REQUIRED_BY] = "RequiredBy",
2071 [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable",
2072 [UNIT_WANTED_BY] = "WantedBy",
2073 [UNIT_CONFLICTS] = "Conflicts",
2074 [UNIT_BEFORE] = "Before",
2075 [UNIT_AFTER] = "After",
2076 [UNIT_REFERENCES] = "References",
2077 [UNIT_REFERENCED_BY] = "ReferencedBy"
2080 DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
2082 static const char* const kill_mode_table[_KILL_MODE_MAX] = {
2083 [KILL_CONTROL_GROUP] = "control-group",
2084 [KILL_PROCESS_GROUP] = "process-group",
2085 [KILL_PROCESS] = "process",
2086 [KILL_NONE] = "none"
2089 DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode);