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 prefix, yes_no(u->meta.recursive_stop),
631 prefix, yes_no(u->meta.stop_when_unneeded),
632 prefix, yes_no(u->meta.only_by_dependency),
633 prefix, yes_no(u->meta.default_dependencies));
635 LIST_FOREACH(by_unit, b, u->meta.cgroup_bondings)
636 fprintf(f, "%s\tControlGroup: %s:%s\n",
637 prefix, b->controller, b->path);
639 if (UNIT_VTABLE(u)->dump)
640 UNIT_VTABLE(u)->dump(u, f, prefix2);
642 } else if (u->meta.load_state == UNIT_MERGED)
644 "%s\tMerged into: %s\n",
645 prefix, u->meta.merged_into->meta.id);
648 job_dump(u->meta.job, f, prefix2);
653 /* Common implementation for multiple backends */
654 int unit_load_fragment_and_dropin(Unit *u) {
659 /* Load a .service file */
660 if ((r = unit_load_fragment(u)) < 0)
663 if (u->meta.load_state == UNIT_STUB)
666 /* Load drop-in directory data */
667 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
673 /* Common implementation for multiple backends */
674 int unit_load_fragment_and_dropin_optional(Unit *u) {
679 /* Same as unit_load_fragment_and_dropin(), but whether
680 * something can be loaded or not doesn't matter. */
682 /* Load a .service file */
683 if ((r = unit_load_fragment(u)) < 0)
686 if (u->meta.load_state == UNIT_STUB)
687 u->meta.load_state = UNIT_LOADED;
689 /* Load drop-in directory data */
690 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
696 /* Common implementation for multiple backends */
697 int unit_load_nop(Unit *u) {
700 if (u->meta.load_state == UNIT_STUB)
701 u->meta.load_state = UNIT_LOADED;
706 int unit_load(Unit *u) {
711 if (u->meta.in_load_queue) {
712 LIST_REMOVE(Meta, load_queue, u->meta.manager->load_queue, &u->meta);
713 u->meta.in_load_queue = false;
716 if (u->meta.type == _UNIT_TYPE_INVALID)
719 if (u->meta.load_state != UNIT_STUB)
722 if (UNIT_VTABLE(u)->load)
723 if ((r = UNIT_VTABLE(u)->load(u)) < 0)
726 if (u->meta.load_state == UNIT_STUB) {
731 assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into);
733 unit_add_to_dbus_queue(unit_follow_merge(u));
734 unit_add_to_gc_queue(u);
739 u->meta.load_state = UNIT_FAILED;
740 unit_add_to_dbus_queue(u);
742 log_notice("Failed to load configuration for %s: %s", u->meta.id, strerror(-r));
748 * -EBADR: This unit type does not support starting.
749 * -EALREADY: Unit is already started.
750 * -EAGAIN: An operation is already in progress. Retry later.
751 * -ECANCELED: Too many requests for now.
753 int unit_start(Unit *u) {
754 UnitActiveState state;
758 if (u->meta.load_state != UNIT_LOADED)
761 /* If this is already (being) started, then this will
762 * succeed. Note that this will even succeed if this unit is
763 * not startable by the user. This is relied on to detect when
764 * we need to wait for units and when waiting is finished. */
765 state = unit_active_state(u);
766 if (UNIT_IS_ACTIVE_OR_RELOADING(state))
769 /* If it is stopped, but we cannot start it, then fail */
770 if (!UNIT_VTABLE(u)->start)
773 /* We don't suppress calls to ->start() here when we are
774 * already starting, to allow this request to be used as a
775 * "hurry up" call, for example when the unit is in some "auto
776 * restart" state where it waits for a holdoff timer to elapse
777 * before it will start again. */
779 unit_add_to_dbus_queue(u);
781 unit_status_printf(u, "Starting %s...\n", unit_description(u));
783 return UNIT_VTABLE(u)->start(u);
786 bool unit_can_start(Unit *u) {
789 return !!UNIT_VTABLE(u)->start;
793 * -EBADR: This unit type does not support stopping.
794 * -EALREADY: Unit is already stopped.
795 * -EAGAIN: An operation is already in progress. Retry later.
797 int unit_stop(Unit *u) {
798 UnitActiveState state;
802 state = unit_active_state(u);
803 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(state))
806 if (!UNIT_VTABLE(u)->stop)
809 unit_add_to_dbus_queue(u);
811 unit_status_printf(u, "Stopping %s...\n", unit_description(u));
813 return UNIT_VTABLE(u)->stop(u);
817 * -EBADR: This unit type does not support reloading.
818 * -ENOEXEC: Unit is not started.
819 * -EAGAIN: An operation is already in progress. Retry later.
821 int unit_reload(Unit *u) {
822 UnitActiveState state;
826 if (u->meta.load_state != UNIT_LOADED)
829 if (!unit_can_reload(u))
832 state = unit_active_state(u);
833 if (unit_active_state(u) == UNIT_RELOADING)
836 if (unit_active_state(u) != UNIT_ACTIVE)
839 unit_add_to_dbus_queue(u);
840 return UNIT_VTABLE(u)->reload(u);
843 bool unit_can_reload(Unit *u) {
846 if (!UNIT_VTABLE(u)->reload)
849 if (!UNIT_VTABLE(u)->can_reload)
852 return UNIT_VTABLE(u)->can_reload(u);
855 static void unit_check_uneeded(Unit *u) {
861 /* If this service shall be shut down when unneeded then do
864 if (!u->meta.stop_when_unneeded)
867 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)))
870 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i)
871 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
874 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
875 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
878 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTED_BY], i)
879 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
882 log_info("Service %s is not needed anymore. Stopping.", u->meta.id);
884 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
885 manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL);
888 static void retroactively_start_dependencies(Unit *u) {
893 assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)));
895 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i)
896 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
897 manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL);
899 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
900 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
901 manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL);
903 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i)
904 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
905 manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL);
907 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i)
908 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
909 manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL, NULL);
911 SET_FOREACH(other, u->meta.dependencies[UNIT_CONFLICTS], i)
912 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
913 manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL);
916 static void retroactively_stop_dependencies(Unit *u) {
921 assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u)));
923 if (u->meta.recursive_stop) {
924 /* Pull down units need us recursively if enabled */
925 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY], i)
926 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
927 manager_add_job(u->meta.manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL);
930 /* Garbage collect services that might not be needed anymore, if enabled */
931 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i)
932 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
933 unit_check_uneeded(other);
934 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
935 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
936 unit_check_uneeded(other);
937 SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i)
938 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
939 unit_check_uneeded(other);
940 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i)
941 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
942 unit_check_uneeded(other);
943 SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
944 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
945 unit_check_uneeded(other);
948 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
952 assert(os < _UNIT_ACTIVE_STATE_MAX);
953 assert(ns < _UNIT_ACTIVE_STATE_MAX);
955 /* Note that this is called for all low-level state changes,
956 * even if they might map to the same high-level
957 * UnitActiveState! That means that ns == os is OK an expected
958 * behaviour here. For example: if a mount point is remounted
959 * this function will be called too and the utmp code below
962 dual_timestamp_get(&ts);
964 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && !UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
965 u->meta.inactive_exit_timestamp = ts;
966 else if (!UNIT_IS_INACTIVE_OR_MAINTENANCE(os) && UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
967 u->meta.inactive_enter_timestamp = ts;
969 if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
970 u->meta.active_enter_timestamp = ts;
971 else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
972 u->meta.active_exit_timestamp = ts;
974 if (ns != os && ns == UNIT_MAINTENANCE)
975 log_notice("Unit %s entered maintenance state.", u->meta.id);
977 if (UNIT_IS_INACTIVE_OR_MAINTENANCE(ns))
978 cgroup_bonding_trim_list(u->meta.cgroup_bondings, true);
980 timer_unit_notify(u, ns);
981 path_unit_notify(u, ns);
984 bool unexpected = false;
986 if (u->meta.job->state == JOB_WAITING)
988 /* So we reached a different state for this
989 * job. Let's see if we can run it now if it
990 * failed previously due to EAGAIN. */
991 job_add_to_run_queue(u->meta.job);
994 /* Let's check whether this state change constitutes a
995 * finished job, or maybe cotradicts a running job and
996 * hence needs to invalidate jobs. */
998 switch (u->meta.job->type) {
1001 case JOB_VERIFY_ACTIVE:
1003 if (UNIT_IS_ACTIVE_OR_RELOADING(ns))
1004 job_finish_and_invalidate(u->meta.job, true);
1005 else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) {
1007 job_finish_and_invalidate(u->meta.job, false);
1013 case JOB_RELOAD_OR_START:
1015 if (u->meta.job->state == JOB_RUNNING) {
1016 if (ns == UNIT_ACTIVE)
1017 job_finish_and_invalidate(u->meta.job, true);
1018 else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) {
1020 job_finish_and_invalidate(u->meta.job, false);
1028 case JOB_TRY_RESTART:
1030 if (ns == UNIT_INACTIVE || ns == UNIT_MAINTENANCE)
1031 job_finish_and_invalidate(u->meta.job, true);
1032 else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) {
1034 job_finish_and_invalidate(u->meta.job, false);
1040 assert_not_reached("Job type unknown");
1043 /* If this state change happened without being
1044 * requested by a job, then let's retroactively start
1045 * or stop dependencies */
1048 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns))
1049 retroactively_start_dependencies(u);
1050 else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
1051 retroactively_stop_dependencies(u);
1055 /* Some names are special */
1056 if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
1057 if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) {
1058 /* The bus just might have become available,
1059 * hence try to connect to it, if we aren't
1061 bus_init(u->meta.manager);
1064 if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
1065 /* The syslog daemon just might have become
1066 * available, hence try to connect to it, if
1067 * we aren't yet connected. */
1070 if (u->meta.type == UNIT_MOUNT)
1071 /* Another directory became available, let's
1072 * check if that is enough to write our utmp
1074 manager_write_utmp_reboot(u->meta.manager);
1076 if (u->meta.type == UNIT_TARGET)
1077 /* A target got activated, maybe this is a runlevel? */
1078 manager_write_utmp_runlevel(u->meta.manager, u);
1080 } else if (!UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
1082 if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
1083 /* The syslog daemon might just have
1084 * terminated, hence try to disconnect from
1088 /* We don't care about D-Bus here, since we'll get an
1089 * asynchronous notification for it anyway. */
1092 /* Maybe we finished startup and are now ready for being
1093 * stopped because unneeded? */
1094 unit_check_uneeded(u);
1096 unit_add_to_dbus_queue(u);
1097 unit_add_to_gc_queue(u);
1100 int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) {
1101 struct epoll_event ev;
1106 assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u));
1112 if (epoll_ctl(u->meta.manager->epoll_fd,
1113 w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD,
1125 void unit_unwatch_fd(Unit *u, Watch *w) {
1129 if (w->type == WATCH_INVALID)
1132 assert(w->type == WATCH_FD);
1133 assert(w->data.unit == u);
1134 assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
1137 w->type = WATCH_INVALID;
1138 w->data.unit = NULL;
1141 int unit_watch_pid(Unit *u, pid_t pid) {
1145 /* Watch a specific PID. We only support one unit watching
1146 * each PID for now. */
1148 return hashmap_put(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u);
1151 void unit_unwatch_pid(Unit *u, pid_t pid) {
1155 hashmap_remove_value(u->meta.manager->watch_pids, LONG_TO_PTR(pid), u);
1158 int unit_watch_timer(Unit *u, usec_t delay, Watch *w) {
1159 struct itimerspec its;
1165 assert(w->type == WATCH_INVALID || (w->type == WATCH_TIMER && w->data.unit == u));
1167 /* This will try to reuse the old timer if there is one */
1169 if (w->type == WATCH_TIMER) {
1174 if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0)
1181 /* Set absolute time in the past, but not 0, since we
1182 * don't want to disarm the timer */
1183 its.it_value.tv_sec = 0;
1184 its.it_value.tv_nsec = 1;
1186 flags = TFD_TIMER_ABSTIME;
1188 timespec_store(&its.it_value, delay);
1192 /* This will also flush the elapse counter */
1193 if (timerfd_settime(fd, flags, &its, NULL) < 0)
1196 if (w->type == WATCH_INVALID) {
1197 struct epoll_event ev;
1201 ev.events = EPOLLIN;
1203 if (epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0)
1208 w->type = WATCH_TIMER;
1215 close_nointr_nofail(fd);
1220 void unit_unwatch_timer(Unit *u, Watch *w) {
1224 if (w->type == WATCH_INVALID)
1227 assert(w->type == WATCH_TIMER && w->data.unit == u);
1229 assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
1230 close_nointr_nofail(w->fd);
1233 w->type = WATCH_INVALID;
1234 w->data.unit = NULL;
1237 bool unit_job_is_applicable(Unit *u, JobType j) {
1239 assert(j >= 0 && j < _JOB_TYPE_MAX);
1243 case JOB_VERIFY_ACTIVE:
1249 case JOB_TRY_RESTART:
1250 return unit_can_start(u);
1253 return unit_can_reload(u);
1255 case JOB_RELOAD_OR_START:
1256 return unit_can_reload(u) && unit_can_start(u);
1259 assert_not_reached("Invalid job type");
1263 int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
1265 static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
1266 [UNIT_REQUIRES] = UNIT_REQUIRED_BY,
1267 [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
1268 [UNIT_WANTS] = UNIT_WANTED_BY,
1269 [UNIT_REQUISITE] = UNIT_REQUIRED_BY,
1270 [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
1271 [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID,
1272 [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID,
1273 [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID,
1274 [UNIT_CONFLICTS] = UNIT_CONFLICTS,
1275 [UNIT_BEFORE] = UNIT_AFTER,
1276 [UNIT_AFTER] = UNIT_BEFORE,
1277 [UNIT_REFERENCES] = UNIT_REFERENCED_BY,
1278 [UNIT_REFERENCED_BY] = UNIT_REFERENCES
1280 int r, q = 0, v = 0, w = 0;
1283 assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX);
1284 assert(inverse_table[d] != _UNIT_DEPENDENCY_INVALID);
1287 /* We won't allow dependencies on ourselves. We will not
1288 * consider them an error however. */
1292 if (UNIT_VTABLE(u)->no_requires &&
1293 (d == UNIT_REQUIRES ||
1294 d == UNIT_REQUIRES_OVERRIDABLE ||
1295 d == UNIT_REQUISITE ||
1296 d == UNIT_REQUISITE_OVERRIDABLE)) {
1300 if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0 ||
1301 (r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
1305 if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 ||
1306 (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0)
1309 if ((q = set_put(u->meta.dependencies[d], other)) < 0)
1312 if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
1317 if (add_reference) {
1318 if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) {
1323 if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0)
1327 unit_add_to_dbus_queue(u);
1332 set_remove(u->meta.dependencies[d], other);
1335 set_remove(other->meta.dependencies[inverse_table[d]], u);
1338 set_remove(u->meta.dependencies[UNIT_REFERENCES], other);
1343 int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) {
1348 if ((r = unit_add_dependency(u, d, other, add_reference)) < 0)
1351 if ((r = unit_add_dependency(u, e, other, add_reference)) < 0)
1357 static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) {
1361 assert(name || path);
1364 name = file_name_from_path(path);
1366 if (!unit_name_is_template(name)) {
1371 if (u->meta.instance)
1372 s = unit_name_replace_instance(name, u->meta.instance);
1376 if (!(i = unit_name_to_prefix(u->meta.id)))
1379 s = unit_name_replace_instance(name, i);
1390 int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
1396 assert(name || path);
1398 if (!(name = resolve_template(u, name, path, &s)))
1401 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1404 r = unit_add_dependency(u, d, other, add_reference);
1411 int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
1417 assert(name || path);
1419 if (!(name = resolve_template(u, name, path, &s)))
1422 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1425 r = unit_add_two_dependencies(u, d, e, other, add_reference);
1432 int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
1438 assert(name || path);
1440 if (!(name = resolve_template(u, name, path, &s)))
1443 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1446 r = unit_add_dependency(other, d, u, add_reference);
1453 int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
1459 assert(name || path);
1461 if (!(name = resolve_template(u, name, path, &s)))
1464 if ((r = manager_load_unit(u->meta.manager, name, path, NULL, &other)) < 0)
1467 if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0)
1475 int set_unit_path(const char *p) {
1479 /* This is mostly for debug purposes */
1481 if (path_is_absolute(p)) {
1482 if (!(c = strdup(p)))
1485 if (!(cwd = get_current_dir_name()))
1488 r = asprintf(&c, "%s/%s", cwd, p);
1495 if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) {
1504 char *unit_dbus_path(Unit *u) {
1509 if (!(e = bus_path_escape(u->meta.id)))
1512 if (asprintf(&p, "/org/freedesktop/systemd1/unit/%s", e) < 0) {
1521 int unit_add_cgroup(Unit *u, CGroupBonding *b) {
1529 /* Ensure this hasn't been added yet */
1532 l = hashmap_get(u->meta.manager->cgroup_bondings, b->path);
1533 LIST_PREPEND(CGroupBonding, by_path, l, b);
1535 if ((r = hashmap_replace(u->meta.manager->cgroup_bondings, b->path, l)) < 0) {
1536 LIST_REMOVE(CGroupBonding, by_path, l, b);
1540 LIST_PREPEND(CGroupBonding, by_unit, u->meta.cgroup_bondings, b);
1546 static char *default_cgroup_path(Unit *u) {
1552 if (u->meta.instance) {
1555 if (!(t = unit_name_template(u->meta.id)))
1558 r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance);
1561 r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id);
1563 return r < 0 ? NULL : p;
1566 int unit_add_cgroup_from_text(Unit *u, const char *name) {
1568 char *controller = NULL, *path = NULL;
1569 CGroupBonding *b = NULL;
1575 /* Detect controller name */
1576 n = strcspn(name, ":");
1579 (name[n] == ':' && name[n+1] == 0)) {
1581 /* Only controller name, no path? */
1583 if (!(path = default_cgroup_path(u)))
1589 /* Controller name, and path. */
1592 if (!path_is_absolute(p))
1595 if (!(path = strdup(p)))
1600 controller = strndup(name, n);
1602 controller = strdup(SYSTEMD_CGROUP_CONTROLLER);
1609 if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller)) {
1614 if (!(b = new0(CGroupBonding, 1))) {
1619 b->controller = controller;
1622 b->clean_up = false;
1624 if ((r = unit_add_cgroup(u, b)) < 0)
1637 int unit_add_default_cgroup(Unit *u) {
1643 /* Adds in the default cgroup data, if it wasn't specified yet */
1645 if (unit_get_default_cgroup(u))
1648 if (!(b = new0(CGroupBonding, 1)))
1651 if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER)))
1654 if (!(b->path = default_cgroup_path(u)))
1660 if ((r = unit_add_cgroup(u, b)) < 0)
1667 free(b->controller);
1673 CGroupBonding* unit_get_default_cgroup(Unit *u) {
1676 return cgroup_bonding_find_list(u->meta.cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER);
1679 int unit_load_related_unit(Unit *u, const char *type, Unit **_found) {
1687 if (!(t = unit_name_change_suffix(u->meta.id, type)))
1690 assert(!unit_has_name(u, t));
1692 r = manager_load_unit(u->meta.manager, t, NULL, NULL, _found);
1695 assert(r < 0 || *_found != u);
1700 int unit_get_related_unit(Unit *u, const char *type, Unit **_found) {
1708 if (!(t = unit_name_change_suffix(u->meta.id, type)))
1711 assert(!unit_has_name(u, t));
1713 found = manager_get_unit(u->meta.manager, t);
1723 static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
1727 return unit_name_to_prefix_and_instance(u->meta.id);
1730 static char *specifier_prefix(char specifier, void *data, void *userdata) {
1734 return unit_name_to_prefix(u->meta.id);
1737 static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) {
1743 if (!(p = unit_name_to_prefix(u->meta.id)))
1746 r = unit_name_unescape(p);
1752 static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) {
1756 if (u->meta.instance)
1757 return unit_name_unescape(u->meta.instance);
1762 char *unit_name_printf(Unit *u, const char* format) {
1765 * This will use the passed string as format string and
1766 * replace the following specifiers:
1768 * %n: the full id of the unit (foo@bar.waldo)
1769 * %N: the id of the unit without the suffix (foo@bar)
1770 * %p: the prefix (foo)
1771 * %i: the instance (bar)
1774 const Specifier table[] = {
1775 { 'n', specifier_string, u->meta.id },
1776 { 'N', specifier_prefix_and_instance, NULL },
1777 { 'p', specifier_prefix, NULL },
1778 { 'i', specifier_string, u->meta.instance },
1785 return specifier_printf(format, table, u);
1788 char *unit_full_printf(Unit *u, const char *format) {
1790 /* This is similar to unit_name_printf() but also supports
1793 const Specifier table[] = {
1794 { 'n', specifier_string, u->meta.id },
1795 { 'N', specifier_prefix_and_instance, NULL },
1796 { 'p', specifier_prefix, NULL },
1797 { 'P', specifier_prefix_unescaped, NULL },
1798 { 'i', specifier_string, u->meta.instance },
1799 { 'I', specifier_instance_unescaped, NULL },
1806 return specifier_printf(format, table, u);
1809 char **unit_full_printf_strv(Unit *u, char **l) {
1813 /* Applies unit_full_printf to every entry in l */
1818 if (!(r = new(char*, n+1)))
1821 for (i = l, j = r; *i; i++, j++)
1822 if (!(*j = unit_full_printf(u, *i)))
1838 int unit_watch_bus_name(Unit *u, const char *name) {
1842 /* Watch a specific name on the bus. We only support one unit
1843 * watching each name for now. */
1845 return hashmap_put(u->meta.manager->watch_bus, name, u);
1848 void unit_unwatch_bus_name(Unit *u, const char *name) {
1852 hashmap_remove_value(u->meta.manager->watch_bus, name, u);
1855 bool unit_can_serialize(Unit *u) {
1858 return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
1861 int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
1868 if (!unit_can_serialize(u))
1871 if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
1875 unit_serialize_item(u, f, "job", job_type_to_string(u->meta.job->type));
1882 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
1893 va_start(ap, format);
1894 vfprintf(f, format, ap);
1900 void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) {
1906 fprintf(f, "%s=%s\n", key, value);
1909 int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
1916 if (!unit_can_serialize(u))
1920 char line[1024], *l, *v;
1923 if (!fgets(line, sizeof(line), f)) {
1935 k = strcspn(l, "=");
1943 if (streq(l, "job")) {
1946 if ((type = job_type_from_string(v)) < 0)
1947 log_debug("Failed to parse job type value %s", v);
1949 u->meta.deserialized_job = type;
1954 if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
1959 int unit_add_node_link(Unit *u, const char *what, bool wants) {
1969 /* Adds in links to the device node that this unit is based on */
1971 if (!is_device_path(what))
1974 if (!(e = unit_name_build_escape(what+1, NULL, ".device")))
1977 r = manager_load_unit(u->meta.manager, e, NULL, NULL, &device);
1983 if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, device, true)) < 0)
1987 if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0)
1993 int unit_coldplug(Unit *u) {
1998 if (UNIT_VTABLE(u)->coldplug)
1999 if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0)
2002 if (u->meta.deserialized_job >= 0) {
2003 if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_FAIL, false, NULL, NULL)) < 0)
2006 u->meta.deserialized_job = _JOB_TYPE_INVALID;
2012 void unit_status_printf(Unit *u, const char *format, ...) {
2018 if (!UNIT_VTABLE(u)->show_status)
2021 if (u->meta.manager->running_as != MANAGER_SYSTEM)
2024 if (!u->meta.manager->show_status)
2027 if (!manager_is_booting_or_shutting_down(u->meta.manager))
2030 va_start(ap, format);
2031 status_vprintf(format, ap);
2035 static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
2036 [UNIT_SERVICE] = "service",
2037 [UNIT_TIMER] = "timer",
2038 [UNIT_SOCKET] = "socket",
2039 [UNIT_TARGET] = "target",
2040 [UNIT_DEVICE] = "device",
2041 [UNIT_MOUNT] = "mount",
2042 [UNIT_AUTOMOUNT] = "automount",
2043 [UNIT_SNAPSHOT] = "snapshot",
2044 [UNIT_SWAP] = "swap"
2047 DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
2049 static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
2050 [UNIT_STUB] = "stub",
2051 [UNIT_LOADED] = "loaded",
2052 [UNIT_FAILED] = "failed",
2053 [UNIT_MERGED] = "merged"
2056 DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
2058 static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
2059 [UNIT_ACTIVE] = "active",
2060 [UNIT_RELOADING] = "reloading",
2061 [UNIT_INACTIVE] = "inactive",
2062 [UNIT_MAINTENANCE] = "maintenance",
2063 [UNIT_ACTIVATING] = "activating",
2064 [UNIT_DEACTIVATING] = "deactivating"
2067 DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState);
2069 static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
2070 [UNIT_REQUIRES] = "Requires",
2071 [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable",
2072 [UNIT_WANTS] = "Wants",
2073 [UNIT_REQUISITE] = "Requisite",
2074 [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable",
2075 [UNIT_REQUIRED_BY] = "RequiredBy",
2076 [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable",
2077 [UNIT_WANTED_BY] = "WantedBy",
2078 [UNIT_CONFLICTS] = "Conflicts",
2079 [UNIT_BEFORE] = "Before",
2080 [UNIT_AFTER] = "After",
2081 [UNIT_REFERENCES] = "References",
2082 [UNIT_REFERENCED_BY] = "ReferencedBy"
2085 DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
2087 static const char* const kill_mode_table[_KILL_MODE_MAX] = {
2088 [KILL_CONTROL_GROUP] = "control-group",
2089 [KILL_PROCESS_GROUP] = "process-group",
2090 [KILL_PROCESS] = "process",
2091 [KILL_NONE] = "none"
2094 DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode);