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"
42 #include "cgroup-util.h"
44 const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
45 [UNIT_SERVICE] = &service_vtable,
46 [UNIT_TIMER] = &timer_vtable,
47 [UNIT_SOCKET] = &socket_vtable,
48 [UNIT_TARGET] = &target_vtable,
49 [UNIT_DEVICE] = &device_vtable,
50 [UNIT_MOUNT] = &mount_vtable,
51 [UNIT_AUTOMOUNT] = &automount_vtable,
52 [UNIT_SNAPSHOT] = &snapshot_vtable,
53 [UNIT_SWAP] = &swap_vtable,
54 [UNIT_PATH] = &path_vtable
57 Unit *unit_new(Manager *m) {
62 if (!(u = new0(Unit, 1)))
65 if (!(u->meta.names = set_new(string_hash_func, string_compare_func))) {
71 u->meta.type = _UNIT_TYPE_INVALID;
72 u->meta.deserialized_job = _JOB_TYPE_INVALID;
73 u->meta.default_dependencies = true;
78 bool unit_has_name(Unit *u, const char *name) {
82 return !!set_get(u->meta.names, (char*) name);
85 int unit_add_name(Unit *u, const char *text) {
87 char *s = NULL, *i = NULL;
93 if (unit_name_is_template(text)) {
94 if (!u->meta.instance)
97 s = unit_name_replace_instance(text, u->meta.instance);
104 if (!unit_name_is_valid(s)) {
109 assert_se((t = unit_name_to_type(s)) >= 0);
111 if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) {
116 if ((r = unit_name_to_instance(s, &i)) < 0)
119 if (i && unit_vtable[t]->no_instances)
122 if (u->meta.type != _UNIT_TYPE_INVALID && !streq_ptr(u->meta.instance, i)) {
127 if (unit_vtable[t]->no_alias &&
128 !set_isempty(u->meta.names) &&
129 !set_get(u->meta.names, s)) {
134 if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) {
139 if ((r = set_put(u->meta.names, s)) < 0) {
145 if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) {
146 set_remove(u->meta.names, s);
150 if (u->meta.type == _UNIT_TYPE_INVALID) {
154 u->meta.instance = i;
156 LIST_PREPEND(Meta, units_per_type, u->meta.manager->units_per_type[t], &u->meta);
158 if (UNIT_VTABLE(u)->init)
159 UNIT_VTABLE(u)->init(u);
163 unit_add_to_dbus_queue(u);
173 int unit_choose_id(Unit *u, const char *name) {
179 if (unit_name_is_template(name)) {
181 if (!u->meta.instance)
184 if (!(t = unit_name_replace_instance(name, u->meta.instance)))
190 /* Selects one of the names of this unit as the id */
191 s = set_get(u->meta.names, (char*) name);
198 unit_add_to_dbus_queue(u);
203 int unit_set_description(Unit *u, const char *description) {
208 if (!(s = strdup(description)))
211 free(u->meta.description);
212 u->meta.description = s;
214 unit_add_to_dbus_queue(u);
218 bool unit_check_gc(Unit *u) {
221 if (u->meta.load_state == UNIT_STUB)
224 if (UNIT_VTABLE(u)->no_gc)
230 if (unit_active_state(u) != UNIT_INACTIVE)
233 if (UNIT_VTABLE(u)->check_gc)
234 if (UNIT_VTABLE(u)->check_gc(u))
240 void unit_add_to_load_queue(Unit *u) {
242 assert(u->meta.type != _UNIT_TYPE_INVALID);
244 if (u->meta.load_state != UNIT_STUB || u->meta.in_load_queue)
247 LIST_PREPEND(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
248 u->meta.in_load_queue = true;
251 void unit_add_to_cleanup_queue(Unit *u) {
254 if (u->meta.in_cleanup_queue)
257 LIST_PREPEND(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta);
258 u->meta.in_cleanup_queue = true;
261 void unit_add_to_gc_queue(Unit *u) {
264 if (u->meta.in_gc_queue || u->meta.in_cleanup_queue)
267 if (unit_check_gc(u))
270 LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
271 u->meta.in_gc_queue = true;
273 u->meta.manager->n_in_gc_queue ++;
275 if (u->meta.manager->gc_queue_timestamp <= 0)
276 u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC);
279 void unit_add_to_dbus_queue(Unit *u) {
281 assert(u->meta.type != _UNIT_TYPE_INVALID);
283 if (u->meta.load_state == UNIT_STUB || u->meta.in_dbus_queue)
286 /* Shortcut things if nobody cares */
287 if (!bus_has_subscriber(u->meta.manager)) {
288 u->meta.sent_dbus_new_signal = true;
292 LIST_PREPEND(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta);
293 u->meta.in_dbus_queue = true;
296 static void bidi_set_free(Unit *u, Set *s) {
302 /* Frees the set and makes sure we are dropped from the
303 * inverse pointers */
305 SET_FOREACH(other, s, i) {
308 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
309 set_remove(other->meta.dependencies[d], u);
311 unit_add_to_gc_queue(other);
317 void unit_free(Unit *u) {
324 bus_unit_send_removed_signal(u);
326 if (u->meta.load_state != UNIT_STUB)
327 if (UNIT_VTABLE(u)->done)
328 UNIT_VTABLE(u)->done(u);
330 SET_FOREACH(t, u->meta.names, i)
331 hashmap_remove_value(u->meta.manager->units, t, u);
334 job_free(u->meta.job);
336 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
337 bidi_set_free(u, u->meta.dependencies[d]);
339 if (u->meta.type != _UNIT_TYPE_INVALID)
340 LIST_REMOVE(Meta, units_per_type, u->meta.manager->units_per_type[u->meta.type], &u->meta);
342 if (u->meta.in_load_queue)
343 LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
345 if (u->meta.in_dbus_queue)
346 LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta);
348 if (u->meta.in_cleanup_queue)
349 LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta);
351 if (u->meta.in_gc_queue) {
352 LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
353 u->meta.manager->n_in_gc_queue--;
356 cgroup_bonding_free_list(u->meta.cgroup_bondings);
358 free(u->meta.description);
359 free(u->meta.fragment_path);
361 set_free_free(u->meta.names);
363 free(u->meta.instance);
368 UnitActiveState unit_active_state(Unit *u) {
371 if (u->meta.load_state == UNIT_MERGED)
372 return unit_active_state(unit_follow_merge(u));
374 /* After a reload it might happen that a unit is not correctly
375 * loaded but still has a process around. That's why we won't
376 * shortcut failed loading to UNIT_INACTIVE_MAINTENANCE. */
378 return UNIT_VTABLE(u)->active_state(u);
381 const char* unit_sub_state_to_string(Unit *u) {
384 return UNIT_VTABLE(u)->sub_state_to_string(u);
387 static void complete_move(Set **s, Set **other) {
395 set_move(*s, *other);
402 static void merge_names(Unit *u, Unit *other) {
409 complete_move(&u->meta.names, &other->meta.names);
411 set_free_free(other->meta.names);
412 other->meta.names = NULL;
413 other->meta.id = NULL;
415 SET_FOREACH(t, u->meta.names, i)
416 assert_se(hashmap_replace(u->meta.manager->units, t, u) == 0);
419 static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) {
426 assert(d < _UNIT_DEPENDENCY_MAX);
428 SET_FOREACH(back, other->meta.dependencies[d], i) {
431 for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++)
432 if ((r = set_remove_and_put(back->meta.dependencies[k], other, u)) < 0) {
435 set_remove(back->meta.dependencies[k], other);
437 assert(r == -ENOENT);
441 complete_move(&u->meta.dependencies[d], &other->meta.dependencies[d]);
443 set_free(other->meta.dependencies[d]);
444 other->meta.dependencies[d] = NULL;
447 int unit_merge(Unit *u, Unit *other) {
452 assert(u->meta.manager == other->meta.manager);
453 assert(u->meta.type != _UNIT_TYPE_INVALID);
455 other = unit_follow_merge(other);
460 if (u->meta.type != other->meta.type)
463 if (!streq_ptr(u->meta.instance, other->meta.instance))
466 if (other->meta.load_state != UNIT_STUB &&
467 other->meta.load_state != UNIT_FAILED)
473 if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(unit_active_state(other)))
477 merge_names(u, other);
479 /* Merge dependencies */
480 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
481 merge_dependencies(u, other, d);
483 other->meta.load_state = UNIT_MERGED;
484 other->meta.merged_into = u;
486 /* If there is still some data attached to the other node, we
487 * don't need it anymore, and can free it. */
488 if (other->meta.load_state != UNIT_STUB)
489 if (UNIT_VTABLE(other)->done)
490 UNIT_VTABLE(other)->done(other);
492 unit_add_to_dbus_queue(u);
493 unit_add_to_cleanup_queue(other);
498 int unit_merge_by_name(Unit *u, const char *name) {
506 if (unit_name_is_template(name)) {
507 if (!u->meta.instance)
510 if (!(s = unit_name_replace_instance(name, u->meta.instance)))
516 if (!(other = manager_get_unit(u->meta.manager, name)))
517 r = unit_add_name(u, name);
519 r = unit_merge(u, other);
525 Unit* unit_follow_merge(Unit *u) {
528 while (u->meta.load_state == UNIT_MERGED)
529 assert_se(u = u->meta.merged_into);
534 int unit_add_exec_dependencies(Unit *u, ExecContext *c) {
540 if (c->std_output != EXEC_OUTPUT_KMSG &&
541 c->std_output != EXEC_OUTPUT_SYSLOG &&
542 c->std_error != EXEC_OUTPUT_KMSG &&
543 c->std_error != EXEC_OUTPUT_SYSLOG)
546 /* If syslog or kernel logging is requested, make sure our own
547 * logging daemon is run first. */
549 if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
552 if (u->meta.manager->running_as == MANAGER_SYSTEM)
553 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
559 const char *unit_description(Unit *u) {
562 if (u->meta.description)
563 return u->meta.description;
568 void unit_dump(Unit *u, FILE *f, const char *prefix) {
576 timestamp1[FORMAT_TIMESTAMP_MAX],
577 timestamp2[FORMAT_TIMESTAMP_MAX],
578 timestamp3[FORMAT_TIMESTAMP_MAX],
579 timestamp4[FORMAT_TIMESTAMP_MAX];
582 assert(u->meta.type >= 0);
586 p2 = strappend(prefix, "\t");
587 prefix2 = p2 ? p2 : prefix;
591 "%s\tDescription: %s\n"
593 "%s\tUnit Load State: %s\n"
594 "%s\tUnit Active State: %s\n"
595 "%s\tInactive Exit Timestamp: %s\n"
596 "%s\tActive Enter Timestamp: %s\n"
597 "%s\tActive Exit Timestamp: %s\n"
598 "%s\tInactive Enter Timestamp: %s\n"
599 "%s\tGC Check Good: %s\n",
601 prefix, unit_description(u),
602 prefix, strna(u->meta.instance),
603 prefix, unit_load_state_to_string(u->meta.load_state),
604 prefix, unit_active_state_to_string(unit_active_state(u)),
605 prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp.realtime)),
606 prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp.realtime)),
607 prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp.realtime)),
608 prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp.realtime)),
609 prefix, yes_no(unit_check_gc(u)));
611 SET_FOREACH(t, u->meta.names, i)
612 fprintf(f, "%s\tName: %s\n", prefix, t);
614 if (u->meta.fragment_path)
615 fprintf(f, "%s\tFragment Path: %s\n", prefix, u->meta.fragment_path);
617 for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) {
620 SET_FOREACH(other, u->meta.dependencies[d], i)
621 fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id);
624 if (u->meta.load_state == UNIT_LOADED) {
626 "%s\tRecursive Stop: %s\n"
627 "%s\tStopWhenUnneeded: %s\n"
628 "%s\tOnlyByDependency: %s\n"
629 "%s\tDefaultDependencies: %s\n"
630 "%s\tIgnoreDependencyFailure: %s\n",
631 prefix, yes_no(u->meta.recursive_stop),
632 prefix, yes_no(u->meta.stop_when_unneeded),
633 prefix, yes_no(u->meta.only_by_dependency),
634 prefix, yes_no(u->meta.default_dependencies),
635 prefix, yes_no(u->meta.ignore_dependency_failure));
637 LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings)
638 fprintf(f, "%s\tControlGroup: %s:%s\n",
639 prefix, b->controller, b->path);
641 if (UNIT_VTABLE(u)->dump)
642 UNIT_VTABLE(u)->dump(u, f, prefix2);
644 } else if (u->meta.load_state == UNIT_MERGED)
646 "%s\tMerged into: %s\n",
647 prefix, u->meta.merged_into->meta.id);
650 job_dump(u->meta.job, f, prefix2);
655 /* Common implementation for multiple backends */
656 int unit_load_fragment_and_dropin(Unit *u) {
661 /* Load a .service file */
662 if ((r = unit_load_fragment(u)) < 0)
665 if (u->meta.load_state == UNIT_STUB)
668 /* Load drop-in directory data */
669 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
675 /* Common implementation for multiple backends */
676 int unit_load_fragment_and_dropin_optional(Unit *u) {
681 /* Same as unit_load_fragment_and_dropin(), but whether
682 * something can be loaded or not doesn't matter. */
684 /* Load a .service file */
685 if ((r = unit_load_fragment(u)) < 0)
688 if (u->meta.load_state == UNIT_STUB)
689 u->meta.load_state = UNIT_LOADED;
691 /* Load drop-in directory data */
692 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
698 /* Common implementation for multiple backends */
699 int unit_load_nop(Unit *u) {
702 if (u->meta.load_state == UNIT_STUB)
703 u->meta.load_state = UNIT_LOADED;
708 int unit_load(Unit *u) {
713 if (u->meta.in_load_queue) {
714 LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
715 u->meta.in_load_queue = false;
718 if (u->meta.type == _UNIT_TYPE_INVALID)
721 if (u->meta.load_state != UNIT_STUB)
724 if (UNIT_VTABLE(u)->load)
725 if ((r = UNIT_VTABLE(u)->load(u)) < 0)
728 if (u->meta.load_state == UNIT_STUB) {
733 assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into);
735 unit_add_to_dbus_queue(unit_follow_merge(u));
736 unit_add_to_gc_queue(u);
741 u->meta.load_state = UNIT_FAILED;
742 unit_add_to_dbus_queue(u);
744 log_notice("Failed to load configuration for %s: %s", u->meta.id, strerror(-r));
750 * -EBADR: This unit type does not support starting.
751 * -EALREADY: Unit is already started.
752 * -EAGAIN: An operation is already in progress. Retry later.
753 * -ECANCELED: Too many requests for now.
755 int unit_start(Unit *u) {
756 UnitActiveState state;
760 if (u->meta.load_state != UNIT_LOADED)
763 /* If this is already (being) started, then this will
764 * succeed. Note that this will even succeed if this unit is
765 * not startable by the user. This is relied on to detect when
766 * we need to wait for units and when waiting is finished. */
767 state = unit_active_state(u);
768 if (UNIT_IS_ACTIVE_OR_RELOADING(state))
771 /* If it is stopped, but we cannot start it, then fail */
772 if (!UNIT_VTABLE(u)->start)
775 /* We don't suppress calls to ->start() here when we are
776 * already starting, to allow this request to be used as a
777 * "hurry up" call, for example when the unit is in some "auto
778 * restart" state where it waits for a holdoff timer to elapse
779 * before it will start again. */
781 unit_add_to_dbus_queue(u);
783 unit_status_printf(u, "Starting %s...\n", unit_description(u));
785 return UNIT_VTABLE(u)->start(u);
788 bool unit_can_start(Unit *u) {
791 return !!UNIT_VTABLE(u)->start;
795 * -EBADR: This unit type does not support stopping.
796 * -EALREADY: Unit is already stopped.
797 * -EAGAIN: An operation is already in progress. Retry later.
799 int unit_stop(Unit *u) {
800 UnitActiveState state;
804 state = unit_active_state(u);
805 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(state))
808 if (!UNIT_VTABLE(u)->stop)
811 unit_add_to_dbus_queue(u);
813 unit_status_printf(u, "Stopping %s...\n", unit_description(u));
815 return UNIT_VTABLE(u)->stop(u);
819 * -EBADR: This unit type does not support reloading.
820 * -ENOEXEC: Unit is not started.
821 * -EAGAIN: An operation is already in progress. Retry later.
823 int unit_reload(Unit *u) {
824 UnitActiveState state;
828 if (u->meta.load_state != UNIT_LOADED)
831 if (!unit_can_reload(u))
834 state = unit_active_state(u);
835 if (unit_active_state(u) == UNIT_RELOADING)
838 if (unit_active_state(u) != UNIT_ACTIVE)
841 unit_add_to_dbus_queue(u);
842 return UNIT_VTABLE(u)->reload(u);
845 bool unit_can_reload(Unit *u) {
848 if (!UNIT_VTABLE(u)->reload)
851 if (!UNIT_VTABLE(u)->can_reload)
854 return UNIT_VTABLE(u)->can_reload(u);
857 static void unit_check_uneeded(Unit *u) {
863 /* If this service shall be shut down when unneeded then do
866 if (!u->meta.stop_when_unneeded)
869 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)))
872 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i)
873 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
876 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
877 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
880 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i)
881 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
884 log_info("Service %s is not needed anymore. Stopping.", u->meta.id);
886 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
887 manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL);
890 static void retroactively_start_dependencies(Unit *u) {
895 assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)));
897 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i)
898 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
899 manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL);
901 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
902 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
903 manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL);
905 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i)
906 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
907 manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL);
909 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i)
910 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
911 manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL);
913 SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i)
914 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
915 manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL);
918 static void retroactively_stop_dependencies(Unit *u) {
923 assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u)));
925 if (u->meta.recursive_stop) {
926 /* Pull down units need us recursively if enabled */
927 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i)
928 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
929 manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL);
932 /* Garbage collect services that might not be needed anymore, if enabled */
933 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], 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_REQUIRES_OVERRIDABLE], 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_WANTS], 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], i)
943 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
944 unit_check_uneeded(other);
945 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
946 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
947 unit_check_uneeded(other);
950 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
955 assert(os < _UNIT_ACTIVE_STATE_MAX);
956 assert(ns < _UNIT_ACTIVE_STATE_MAX);
958 /* Note that this is called for all low-level state changes,
959 * even if they might map to the same high-level
960 * UnitActiveState! That means that ns == os is OK an expected
961 * behaviour here. For example: if a mount point is remounted
962 * this function will be called too and the utmp code below
965 dual_timestamp_get(&ts);
967 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && !UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
968 u->meta.inactive_exit_timestamp = ts;
969 else if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
970 u->meta.inactive_enter_timestamp = ts;
972 if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
973 u->meta.active_enter_timestamp = ts;
974 else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
975 u->meta.active_exit_timestamp = ts;
977 if (ns != os && ns == UNIT_MAINTENANCE)
978 log_notice("Unit %s entered maintenance state.", u->meta.id);
980 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
981 cgroup_bonding_trim_list(u->meta.cgroup_bondings, true);
983 timer_unit_notify(u, ns);
984 path_unit_notify(u, ns);
989 if (u->meta.job->state == JOB_WAITING)
991 /* So we reached a different state for this
992 * job. Let's see if we can run it now if it
993 * failed previously due to EAGAIN. */
994 job_add_to_run_queue(u->meta.job);
997 /* Let's check whether this state change constitutes a
998 * finished job, or maybe cotradicts a running job and
999 * hence needs to invalidate jobs. */
1001 switch (u->meta.job->type) {
1004 case JOB_VERIFY_ACTIVE:
1006 if (UNIT_IS_ACTIVE_OR_RELOADING(ns))
1007 job_finish_and_invalidate(u->meta.job, true);
1008 else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) {
1010 job_finish_and_invalidate(u->meta.job, false);
1016 case JOB_RELOAD_OR_START:
1018 if (u->meta.job->state == JOB_RUNNING) {
1019 if (ns == UNIT_ACTIVE)
1020 job_finish_and_invalidate(u->meta.job, true);
1021 else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) {
1023 job_finish_and_invalidate(u->meta.job, false);
1031 case JOB_TRY_RESTART:
1033 if (ns == UNIT_INACTIVE || ns == UNIT_MAINTENANCE)
1034 job_finish_and_invalidate(u->meta.job, true);
1035 else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) {
1037 job_finish_and_invalidate(u->meta.job, false);
1043 assert_not_reached("Job type unknown");
1049 /* If this state change happened without being requested by a
1050 * job, then let's retroactively start or stop
1051 * dependencies. We skip that step when deserializing, since
1052 * we don't want to create any additional jobs just because
1053 * something is already activated. */
1055 if (unexpected && u->meta.manager->n_deserializing <= 0) {
1056 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns))
1057 retroactively_start_dependencies(u);
1058 else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
1059 retroactively_stop_dependencies(u);
1062 /* Some names are special */
1063 if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
1064 if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) {
1065 /* The bus just might have become available,
1066 * hence try to connect to it, if we aren't
1068 bus_init(u->meta.manager);
1071 if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
1072 /* The syslog daemon just might have become
1073 * available, hence try to connect to it, if
1074 * we aren't yet connected. */
1077 if (u->meta.type == UNIT_MOUNT)
1078 /* Another directory became available, let's
1079 * check if that is enough to write our utmp
1081 manager_write_utmp_reboot(u->meta.manager);
1083 if (u->meta.type == UNIT_TARGET)
1084 /* A target got activated, maybe this is a runlevel? */
1085 manager_write_utmp_runlevel(u->meta.manager, u);
1087 } else if (!UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
1089 if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
1090 /* The syslog daemon might just have
1091 * terminated, hence try to disconnect from
1095 /* We don't care about D-Bus here, since we'll get an
1096 * asynchronous notification for it anyway. */
1099 /* Maybe we finished startup and are now ready for being
1100 * stopped because unneeded? */
1101 unit_check_uneeded(u);
1103 unit_add_to_dbus_queue(u);
1104 unit_add_to_gc_queue(u);
1107 int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) {
1108 struct epoll_event ev;
1113 assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u));
1119 if (epoll_ctl(u->meta.manager->epoll_fd,
1120 w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD,
1132 void unit_unwatch_fd(Unit *u, Watch *w) {
1136 if (w->type == WATCH_INVALID)
1139 assert(w->type == WATCH_FD);
1140 assert(w->data.unit == u);
1141 assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
1144 w->type = WATCH_INVALID;
1145 w->data.unit = NULL;
1148 int unit_watch_pid(Unit *u, pid_t pid) {
1152 /* Watch a specific PID. We only support one unit watching
1153 * each PID for now. */
1155 return hashmap_put(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u);
1158 void unit_unwatch_pid(Unit *u, pid_t pid) {
1162 hashmap_remove_value(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u);
1165 int unit_watch_timer(Unit *u, usec_t delay, Watch *w) {
1166 struct itimerspec its;
1172 assert(w->type == WATCH_INVALID || (w->type == WATCH_TIMER && w->data.unit == u));
1174 /* This will try to reuse the old timer if there is one */
1176 if (w->type == WATCH_TIMER) {
1181 if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0)
1188 /* Set absolute time in the past, but not 0, since we
1189 * don't want to disarm the timer */
1190 its.it_value.tv_sec = 0;
1191 its.it_value.tv_nsec = 1;
1193 flags = TFD_TIMER_ABSTIME;
1195 timespec_store(&its.it_value, delay);
1199 /* This will also flush the elapse counter */
1200 if (timerfd_settime(fd, flags, &its, NULL) < 0)
1203 if (w->type == WATCH_INVALID) {
1204 struct epoll_event ev;
1208 ev.events = EPOLLIN;
1210 if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0)
1215 w->type = WATCH_TIMER;
1222 close_nointr_nofail(fd);
1227 void unit_unwatch_timer(Unit *u, Watch *w) {
1231 if (w->type == WATCH_INVALID)
1234 assert(w->type == WATCH_TIMER && w->data.unit == u);
1236 assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
1237 close_nointr_nofail(w->fd);
1240 w->type = WATCH_INVALID;
1241 w->data.unit = NULL;
1244 bool unit_job_is_applicable(Unit *u, JobType j) {
1246 assert(j >= 0 && j < _JOB_TYPE_MAX);
1250 case JOB_VERIFY_ACTIVE:
1256 case JOB_TRY_RESTART:
1257 return unit_can_start(u);
1260 return unit_can_reload(u);
1262 case JOB_RELOAD_OR_START:
1263 return unit_can_reload(u) && unit_can_start(u);
1266 assert_not_reached("Invalid job type");
1270 int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
1272 static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
1273 [UNIT_REQUIRES] = UNIT_REQUIRED_BY,
1274 [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
1275 [UNIT_WANTS] = UNIT_WANTED_BY,
1276 [UNIT_REQUISITE] = UNIT_REQUIRED_BY,
1277 [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
1278 [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID,
1279 [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID,
1280 [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID,
1281 [UNIT_CONFLICTS] = UNIT_CONFLICTS,
1282 [UNIT_BEFORE] = UNIT_AFTER,
1283 [UNIT_AFTER] = UNIT_BEFORE,
1284 [UNIT_REFERENCES] = UNIT_REFERENCED_BY,
1285 [UNIT_REFERENCED_BY] = UNIT_REFERENCES
1287 int r, q = 0, v = 0, w = 0;
1290 assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX);
1291 assert(inverse_table[d] != _UNIT_DEPENDENCY_INVALID);
1294 /* We won't allow dependencies on ourselves. We will not
1295 * consider them an error however. */
1299 if (UNIT_VTABLE(u)->no_requires &&
1300 (d == UNIT_REQUIRES ||
1301 d == UNIT_REQUIRES_OVERRIDABLE ||
1302 d == UNIT_REQUISITE ||
1303 d == UNIT_REQUISITE_OVERRIDABLE)) {
1307 if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0 ||
1308 (r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
1312 if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 ||
1313 (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0)
1316 if ((q = set_put(u->meta.dependencies[d], other)) < 0)
1319 if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
1324 if (add_reference) {
1325 if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) {
1330 if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0)
1334 unit_add_to_dbus_queue(u);
1339 set_remove(u->meta.dependencies[d], other);
1342 set_remove(other->meta.dependencies[inverse_table[d]], u);
1345 set_remove(u->meta.dependencies[UNIT_REFERENCES], other);
1350 int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) {
1355 if ((r = unit_add_dependency(u, d, other, add_reference)) < 0)
1358 if ((r = unit_add_dependency(u, e, other, add_reference)) < 0)
1364 static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) {
1368 assert(name || path);
1371 name = file_name_from_path(path);
1373 if (!unit_name_is_template(name)) {
1378 if (u->meta.instance)
1379 s = unit_name_replace_instance(name, u->meta.instance);
1383 if (!(i = unit_name_to_prefix(u->meta.id)))
1386 s = unit_name_replace_instance(name, i);
1397 int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
1403 assert(name || path);
1405 if (!(name = resolve_template(u, name, path, &s)))
1408 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1411 r = unit_add_dependency(u, d, other, add_reference);
1418 int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
1424 assert(name || path);
1426 if (!(name = resolve_template(u, name, path, &s)))
1429 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1432 r = unit_add_two_dependencies(u, d, e, other, add_reference);
1439 int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
1445 assert(name || path);
1447 if (!(name = resolve_template(u, name, path, &s)))
1450 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1453 r = unit_add_dependency(other, d, u, add_reference);
1460 int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
1466 assert(name || path);
1468 if (!(name = resolve_template(u, name, path, &s)))
1471 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1474 if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0)
1482 int set_unit_path(const char *p) {
1486 /* This is mostly for debug purposes */
1488 if (path_is_absolute(p)) {
1489 if (!(c = strdup(p)))
1492 if (!(cwd = get_current_dir_name()))
1495 r = asprintf(&c, "%s/%s", cwd, p);
1502 if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) {
1511 char *unit_dbus_path(Unit *u) {
1516 if (!(e = bus_path_escape(u->meta.id)))
1519 p = strappend("/org/freedesktop/systemd1/unit/", e);
1525 int unit_add_cgroup(Unit *u, CGroupBonding *b) {
1535 if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER)))
1538 /* Ensure this hasn't been added yet */
1541 l = hashmap_get(u->meta.manager->cgroup_bondings, b->path);
1542 LIST_PREPEND(CGroupBonding, by_path, l, b);
1544 if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) {
1545 LIST_REMOVE(CGroupBonding, by_path, l, b);
1549 LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b);
1555 static char *default_cgroup_path(Unit *u) {
1561 if (u->meta.instance) {
1564 if (!(t = unit_name_template(u->meta.id)))
1567 r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance);
1570 r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id);
1572 return r < 0 ? NULL : p;
1575 int unit_add_cgroup_from_text(Unit *u, const char *name) {
1576 char *controller = NULL, *path = NULL;
1577 CGroupBonding *b = NULL;
1583 if ((r = cg_split_spec(name, &controller, &path)) < 0)
1587 path = default_cgroup_path(u);
1590 controller = strdup(SYSTEMD_CGROUP_CONTROLLER);
1592 if (!path || !controller) {
1599 if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) {
1604 if (!(b = new0(CGroupBonding, 1))) {
1609 b->controller = controller;
1612 b->clean_up = false;
1614 if ((r = unit_add_cgroup(u, b)) < 0)
1627 int unit_add_default_cgroup(Unit *u) {
1633 /* Adds in the default cgroup data, if it wasn't specified yet */
1635 if (unit_get_default_cgroup(u))
1638 if (!(b = new0(CGroupBonding, 1)))
1641 if (!(b->path = default_cgroup_path(u)))
1647 if ((r = unit_add_cgroup(u, b)) < 0)
1654 free(b->controller);
1660 CGroupBonding* unit_get_default_cgroup(Unit *u) {
1663 return cgroup_bonding_find_list(u->meta.cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER);
1666 int unit_load_related_unit(Unit *u, const char *type, Unit **_found) {
1674 if (!(t = unit_name_change_suffix(u->meta.id, type)))
1677 assert(!unit_has_name(u, t));
1679 r = manager_load_unit(u->meta.manager, t, NULL, NULL, _found);
1682 assert(r < 0 || *_found != u);
1687 int unit_get_related_unit(Unit *u, const char *type, Unit **_found) {
1695 if (!(t = unit_name_change_suffix(u->meta.id, type)))
1698 assert(!unit_has_name(u, t));
1700 found = manager_get_unit(u->meta.manager, t);
1710 static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
1714 return unit_name_to_prefix_and_instance(u->meta.id);
1717 static char *specifier_prefix(char specifier, void *data, void *userdata) {
1721 return unit_name_to_prefix(u->meta.id);
1724 static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) {
1730 if (!(p = unit_name_to_prefix(u->meta.id)))
1733 r = unit_name_unescape(p);
1739 static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) {
1743 if (u->meta.instance)
1744 return unit_name_unescape(u->meta.instance);
1749 char *unit_name_printf(Unit *u, const char* format) {
1752 * This will use the passed string as format string and
1753 * replace the following specifiers:
1755 * %n: the full id of the unit (foo@bar.waldo)
1756 * %N: the id of the unit without the suffix (foo@bar)
1757 * %p: the prefix (foo)
1758 * %i: the instance (bar)
1761 const Specifier table[] = {
1762 { 'n', specifier_string, u->meta.id },
1763 { 'N', specifier_prefix_and_instance, NULL },
1764 { 'p', specifier_prefix, NULL },
1765 { 'i', specifier_string, u->meta.instance },
1772 return specifier_printf(format, table, u);
1775 char *unit_full_printf(Unit *u, const char *format) {
1777 /* This is similar to unit_name_printf() but also supports
1780 const Specifier table[] = {
1781 { 'n', specifier_string, u->meta.id },
1782 { 'N', specifier_prefix_and_instance, NULL },
1783 { 'p', specifier_prefix, NULL },
1784 { 'P', specifier_prefix_unescaped, NULL },
1785 { 'i', specifier_string, u->meta.instance },
1786 { 'I', specifier_instance_unescaped, NULL },
1793 return specifier_printf(format, table, u);
1796 char **unit_full_printf_strv(Unit *u, char **l) {
1800 /* Applies unit_full_printf to every entry in l */
1805 if (!(r = new(char*, n+1)))
1808 for (i = l, j = r; *i; i++, j++)
1809 if (!(*j = unit_full_printf(u, *i)))
1825 int unit_watch_bus_name(Unit *u, const char *name) {
1829 /* Watch a specific name on the bus. We only support one unit
1830 * watching each name for now. */
1832 return hashmap_put(u->meta.manager->watch_bus, name, u);
1835 void unit_unwatch_bus_name(Unit *u, const char *name) {
1839 hashmap_remove_value(u->meta.manager->watch_bus, name, u);
1842 bool unit_can_serialize(Unit *u) {
1845 return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
1848 int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
1855 if (!unit_can_serialize(u))
1858 if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
1862 unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type));
1869 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
1880 va_start(ap, format);
1881 vfprintf(f, format, ap);
1887 void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) {
1893 fprintf(f, "%s=%s\n", key, value);
1896 int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
1903 if (!unit_can_serialize(u))
1907 char line[1024], *l, *v;
1910 if (!fgets(line, sizeof(line), f)) {
1922 k = strcspn(l, "=");
1930 if (streq(l, "job")) {
1933 if ((type = job_type_from_string(v)) < 0)
1934 log_debug("Failed to parse job type value %s", v);
1936 u->meta.deserialized_job = type;
1941 if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
1946 int unit_add_node_link(Unit *u, const char *what, bool wants) {
1956 /* Adds in links to the device node that this unit is based on */
1958 if (!is_device_path(what))
1961 if (!(e = unit_name_build_escape(what+1, NULL, ".device")))
1964 r = manager_load_unit(u->meta.manager, e, NULL, NULL, &device);
1970 if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, device, true)) < 0)
1974 if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0)
1980 int unit_coldplug(Unit *u) {
1985 if (UNIT_VTABLE(u)->coldplug)
1986 if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0)
1989 if (u->meta.deserialized_job >= 0) {
1990 if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_FAIL, false, NULL, NULL)) < 0)
1993 u->meta.deserialized_job = _JOB_TYPE_INVALID;
1999 void unit_status_printf(Unit *u, const char *format, ...) {
2005 if (!UNIT_VTABLE(u)->show_status)
2008 if (u->meta.manager->running_as != MANAGER_SYSTEM)
2011 if (!u->meta.manager->show_status)
2014 if (!manager_is_booting_or_shutting_down(u->meta.manager))
2017 va_start(ap, format);
2018 status_vprintf(format, ap);
2022 static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
2023 [UNIT_SERVICE] = "service",
2024 [UNIT_TIMER] = "timer",
2025 [UNIT_SOCKET] = "socket",
2026 [UNIT_TARGET] = "target",
2027 [UNIT_DEVICE] = "device",
2028 [UNIT_MOUNT] = "mount",
2029 [UNIT_AUTOMOUNT] = "automount",
2030 [UNIT_SNAPSHOT] = "snapshot",
2031 [UNIT_SWAP] = "swap"
2034 DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
2036 static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
2037 [UNIT_STUB] = "stub",
2038 [UNIT_LOADED] = "loaded",
2039 [UNIT_FAILED] = "failed",
2040 [UNIT_MERGED] = "merged"
2043 DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
2045 static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
2046 [UNIT_ACTIVE] = "active",
2047 [UNIT_RELOADING] = "reloading",
2048 [UNIT_INACTIVE] = "inactive",
2049 [UNIT_MAINTENANCE] = "maintenance",
2050 [UNIT_ACTIVATING] = "activating",
2051 [UNIT_DEACTIVATING] = "deactivating"
2054 DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState);
2056 static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
2057 [UNIT_REQUIRES] = "Requires",
2058 [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable",
2059 [UNIT_WANTS] = "Wants",
2060 [UNIT_REQUISITE] = "Requisite",
2061 [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable",
2062 [UNIT_REQUIRED_BY] = "RequiredBy",
2063 [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable",
2064 [UNIT_WANTED_BY] = "WantedBy",
2065 [UNIT_CONFLICTS] = "Conflicts",
2066 [UNIT_BEFORE] = "Before",
2067 [UNIT_AFTER] = "After",
2068 [UNIT_REFERENCES] = "References",
2069 [UNIT_REFERENCED_BY] = "ReferencedBy"
2072 DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
2074 static const char* const kill_mode_table[_KILL_MODE_MAX] = {
2075 [KILL_CONTROL_GROUP] = "control-group",
2076 [KILL_PROCESS_GROUP] = "process-group",
2077 [KILL_PROCESS] = "process",
2078 [KILL_NONE] = "none"
2081 DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode);