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 const UnitVTable
* const unit_vtable
[_UNIT_TYPE_MAX
] = {
43 [UNIT_SERVICE
] = &service_vtable
,
44 [UNIT_TIMER
] = &timer_vtable
,
45 [UNIT_SOCKET
] = &socket_vtable
,
46 [UNIT_TARGET
] = &target_vtable
,
47 [UNIT_DEVICE
] = &device_vtable
,
48 [UNIT_MOUNT
] = &mount_vtable
,
49 [UNIT_AUTOMOUNT
] = &automount_vtable
,
50 [UNIT_SNAPSHOT
] = &snapshot_vtable
53 Unit
*unit_new(Manager
*m
) {
58 if (!(u
= new0(Unit
, 1)))
61 if (!(u
->meta
.names
= set_new(string_hash_func
, string_compare_func
))) {
67 u
->meta
.type
= _UNIT_TYPE_INVALID
;
72 bool unit_has_name(Unit
*u
, const char *name
) {
76 return !!set_get(u
->meta
.names
, (char*) name
);
79 int unit_add_name(Unit
*u
, const char *text
) {
81 char *s
= NULL
, *i
= NULL
;
87 if (unit_name_is_template(text
)) {
88 if (!u
->meta
.instance
)
91 s
= unit_name_replace_instance(text
, u
->meta
.instance
);
98 if (!unit_name_is_valid(s
)) {
103 assert_se((t
= unit_name_to_type(s
)) >= 0);
105 if (u
->meta
.type
!= _UNIT_TYPE_INVALID
&& t
!= u
->meta
.type
) {
110 if ((r
= unit_name_to_instance(s
, &i
)) < 0)
113 if (i
&& unit_vtable
[t
]->no_instances
)
116 if (u
->meta
.type
!= _UNIT_TYPE_INVALID
&& !streq_ptr(u
->meta
.instance
, i
)) {
121 if (unit_vtable
[t
]->no_alias
&&
122 !set_isempty(u
->meta
.names
) &&
123 !set_get(u
->meta
.names
, s
)) {
128 if ((r
= set_put(u
->meta
.names
, s
)) < 0) {
134 if ((r
= hashmap_put(u
->meta
.manager
->units
, s
, u
)) < 0) {
135 set_remove(u
->meta
.names
, s
);
139 if (u
->meta
.type
== _UNIT_TYPE_INVALID
) {
143 u
->meta
.instance
= i
;
145 LIST_PREPEND(Meta
, units_per_type
, u
->meta
.manager
->units_per_type
[t
], &u
->meta
);
147 if (UNIT_VTABLE(u
)->init
)
148 UNIT_VTABLE(u
)->init(u
);
152 unit_add_to_dbus_queue(u
);
162 int unit_choose_id(Unit
*u
, const char *name
) {
168 if (unit_name_is_template(name
)) {
170 if (!u
->meta
.instance
)
173 if (!(t
= unit_name_replace_instance(name
, u
->meta
.instance
)))
179 /* Selects one of the names of this unit as the id */
180 s
= set_get(u
->meta
.names
, (char*) name
);
187 unit_add_to_dbus_queue(u
);
192 int unit_set_description(Unit
*u
, const char *description
) {
197 if (!(s
= strdup(description
)))
200 free(u
->meta
.description
);
201 u
->meta
.description
= s
;
203 unit_add_to_dbus_queue(u
);
207 bool unit_check_gc(Unit
*u
) {
210 if (UNIT_VTABLE(u
)->no_gc
)
216 if (unit_active_state(u
) != UNIT_INACTIVE
)
219 if (UNIT_VTABLE(u
)->check_gc
)
220 if (UNIT_VTABLE(u
)->check_gc(u
))
226 void unit_add_to_load_queue(Unit
*u
) {
228 assert(u
->meta
.type
!= _UNIT_TYPE_INVALID
);
230 if (u
->meta
.load_state
!= UNIT_STUB
|| u
->meta
.in_load_queue
)
233 LIST_PREPEND(Meta
, load_queue
, u
->meta
.manager
->load_queue
, &u
->meta
);
234 u
->meta
.in_load_queue
= true;
237 void unit_add_to_cleanup_queue(Unit
*u
) {
240 if (u
->meta
.in_cleanup_queue
)
243 LIST_PREPEND(Meta
, cleanup_queue
, u
->meta
.manager
->cleanup_queue
, &u
->meta
);
244 u
->meta
.in_cleanup_queue
= true;
247 void unit_add_to_gc_queue(Unit
*u
) {
250 if (u
->meta
.in_gc_queue
|| u
->meta
.in_cleanup_queue
)
253 if (unit_check_gc(u
))
256 LIST_PREPEND(Meta
, gc_queue
, u
->meta
.manager
->gc_queue
, &u
->meta
);
257 u
->meta
.in_gc_queue
= true;
259 u
->meta
.manager
->n_in_gc_queue
++;
261 if (u
->meta
.manager
->gc_queue_timestamp
<= 0)
262 u
->meta
.manager
->gc_queue_timestamp
= now(CLOCK_MONOTONIC
);
265 void unit_add_to_dbus_queue(Unit
*u
) {
267 assert(u
->meta
.type
!= _UNIT_TYPE_INVALID
);
269 if (u
->meta
.load_state
== UNIT_STUB
|| u
->meta
.in_dbus_queue
|| set_isempty(u
->meta
.manager
->subscribed
))
272 LIST_PREPEND(Meta
, dbus_queue
, u
->meta
.manager
->dbus_unit_queue
, &u
->meta
);
273 u
->meta
.in_dbus_queue
= true;
276 static void bidi_set_free(Unit
*u
, Set
*s
) {
282 /* Frees the set and makes sure we are dropped from the
283 * inverse pointers */
285 SET_FOREACH(other
, s
, i
) {
288 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++)
289 set_remove(other
->meta
.dependencies
[d
], u
);
291 unit_add_to_gc_queue(other
);
297 void unit_free(Unit
*u
) {
304 bus_unit_send_removed_signal(u
);
306 /* Detach from next 'bigger' objects */
307 SET_FOREACH(t
, u
->meta
.names
, i
)
308 hashmap_remove_value(u
->meta
.manager
->units
, t
, u
);
310 if (u
->meta
.type
!= _UNIT_TYPE_INVALID
)
311 LIST_REMOVE(Meta
, units_per_type
, u
->meta
.manager
->units_per_type
[u
->meta
.type
], &u
->meta
);
313 if (u
->meta
.in_load_queue
)
314 LIST_REMOVE(Meta
, load_queue
, u
->meta
.manager
->load_queue
, &u
->meta
);
316 if (u
->meta
.in_dbus_queue
)
317 LIST_REMOVE(Meta
, dbus_queue
, u
->meta
.manager
->dbus_unit_queue
, &u
->meta
);
319 if (u
->meta
.in_cleanup_queue
)
320 LIST_REMOVE(Meta
, cleanup_queue
, u
->meta
.manager
->cleanup_queue
, &u
->meta
);
322 if (u
->meta
.in_gc_queue
) {
323 LIST_REMOVE(Meta
, gc_queue
, u
->meta
.manager
->gc_queue
, &u
->meta
);
324 u
->meta
.manager
->n_in_gc_queue
--;
327 /* Free data and next 'smaller' objects */
329 job_free(u
->meta
.job
);
331 if (u
->meta
.load_state
!= UNIT_STUB
)
332 if (UNIT_VTABLE(u
)->done
)
333 UNIT_VTABLE(u
)->done(u
);
335 cgroup_bonding_free_list(u
->meta
.cgroup_bondings
);
337 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++)
338 bidi_set_free(u
, u
->meta
.dependencies
[d
]);
340 free(u
->meta
.description
);
341 free(u
->meta
.fragment_path
);
343 while ((t
= set_steal_first(u
->meta
.names
)))
345 set_free(u
->meta
.names
);
347 free(u
->meta
.instance
);
352 UnitActiveState
unit_active_state(Unit
*u
) {
355 if (u
->meta
.load_state
!= UNIT_LOADED
)
356 return UNIT_INACTIVE
;
358 return UNIT_VTABLE(u
)->active_state(u
);
361 const char* unit_sub_state_to_string(Unit
*u
) {
364 return UNIT_VTABLE(u
)->sub_state_to_string(u
);
367 static void complete_move(Set
**s
, Set
**other
) {
375 set_move(*s
, *other
);
382 static void merge_names(Unit
*u
, Unit
*other
) {
389 complete_move(&u
->meta
.names
, &other
->meta
.names
);
391 while ((t
= set_steal_first(other
->meta
.names
)))
394 set_free(other
->meta
.names
);
395 other
->meta
.names
= NULL
;
396 other
->meta
.id
= NULL
;
398 SET_FOREACH(t
, u
->meta
.names
, i
)
399 assert_se(hashmap_replace(u
->meta
.manager
->units
, t
, u
) == 0);
402 static void merge_dependencies(Unit
*u
, Unit
*other
, UnitDependency d
) {
409 assert(d
< _UNIT_DEPENDENCY_MAX
);
411 SET_FOREACH(back
, other
->meta
.dependencies
[d
], i
) {
414 for (k
= 0; k
< _UNIT_DEPENDENCY_MAX
; k
++)
415 if ((r
= set_remove_and_put(back
->meta
.dependencies
[k
], other
, u
)) < 0) {
418 set_remove(back
->meta
.dependencies
[k
], other
);
420 assert(r
== -ENOENT
);
424 complete_move(&u
->meta
.dependencies
[d
], &other
->meta
.dependencies
[d
]);
426 set_free(other
->meta
.dependencies
[d
]);
427 other
->meta
.dependencies
[d
] = NULL
;
430 int unit_merge(Unit
*u
, Unit
*other
) {
435 assert(u
->meta
.manager
== other
->meta
.manager
);
436 assert(u
->meta
.type
!= _UNIT_TYPE_INVALID
);
438 other
= unit_follow_merge(other
);
443 if (u
->meta
.type
!= other
->meta
.type
)
446 if (!streq_ptr(u
->meta
.instance
, other
->meta
.instance
))
449 if (other
->meta
.load_state
!= UNIT_STUB
&&
450 other
->meta
.load_state
!= UNIT_FAILED
)
456 if (unit_active_state(other
) != UNIT_INACTIVE
)
460 merge_names(u
, other
);
462 /* Merge dependencies */
463 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++)
464 merge_dependencies(u
, other
, d
);
466 other
->meta
.load_state
= UNIT_MERGED
;
467 other
->meta
.merged_into
= u
;
469 /* If there is still some data attached to the other node, we
470 * don't need it anymore, and can free it. */
471 if (other
->meta
.load_state
!= UNIT_STUB
)
472 if (UNIT_VTABLE(other
)->done
)
473 UNIT_VTABLE(other
)->done(other
);
475 unit_add_to_dbus_queue(u
);
476 unit_add_to_cleanup_queue(other
);
481 int unit_merge_by_name(Unit
*u
, const char *name
) {
489 if (unit_name_is_template(name
)) {
490 if (!u
->meta
.instance
)
493 if (!(s
= unit_name_replace_instance(name
, u
->meta
.instance
)))
499 if (!(other
= manager_get_unit(u
->meta
.manager
, name
)))
500 r
= unit_add_name(u
, name
);
502 r
= unit_merge(u
, other
);
508 Unit
* unit_follow_merge(Unit
*u
) {
511 while (u
->meta
.load_state
== UNIT_MERGED
)
512 assert_se(u
= u
->meta
.merged_into
);
517 int unit_add_exec_dependencies(Unit
*u
, ExecContext
*c
) {
523 if (c
->std_output
!= EXEC_OUTPUT_KERNEL
&& c
->std_output
!= EXEC_OUTPUT_SYSLOG
)
526 /* If syslog or kernel logging is requested, make sure our own
527 * logging daemon is run first. */
529 if ((r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, SPECIAL_LOGGER_SOCKET
, NULL
, true)) < 0)
532 if (u
->meta
.manager
->running_as
!= MANAGER_SESSION
)
533 if ((r
= unit_add_dependency_by_name(u
, UNIT_REQUIRES
, SPECIAL_LOGGER_SOCKET
, NULL
, true)) < 0)
539 const char *unit_description(Unit
*u
) {
542 if (u
->meta
.description
)
543 return u
->meta
.description
;
548 void unit_dump(Unit
*u
, FILE *f
, const char *prefix
) {
555 char timestamp1
[FORMAT_TIMESTAMP_MAX
], timestamp2
[FORMAT_TIMESTAMP_MAX
];
558 assert(u
->meta
.type
>= 0);
562 p2
= strappend(prefix
, "\t");
563 prefix2
= p2
? p2
: prefix
;
567 "%s\tDescription: %s\n"
569 "%s\tUnit Load State: %s\n"
570 "%s\tUnit Active State: %s\n"
571 "%s\tActive Enter Timestamp: %s\n"
572 "%s\tActive Exit Timestamp: %s\n"
573 "%s\tGC Check Good: %s\n",
575 prefix
, unit_description(u
),
576 prefix
, strna(u
->meta
.instance
),
577 prefix
, unit_load_state_to_string(u
->meta
.load_state
),
578 prefix
, unit_active_state_to_string(unit_active_state(u
)),
579 prefix
, strna(format_timestamp(timestamp1
, sizeof(timestamp1
), u
->meta
.active_enter_timestamp
)),
580 prefix
, strna(format_timestamp(timestamp2
, sizeof(timestamp2
), u
->meta
.active_exit_timestamp
)),
581 prefix
, yes_no(unit_check_gc(u
)));
583 SET_FOREACH(t
, u
->meta
.names
, i
)
584 fprintf(f
, "%s\tName: %s\n", prefix
, t
);
586 if (u
->meta
.fragment_path
)
587 fprintf(f
, "%s\tFragment Path: %s\n", prefix
, u
->meta
.fragment_path
);
589 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++) {
592 SET_FOREACH(other
, u
->meta
.dependencies
[d
], i
)
593 fprintf(f
, "%s\t%s: %s\n", prefix
, unit_dependency_to_string(d
), other
->meta
.id
);
596 if (u
->meta
.load_state
== UNIT_LOADED
) {
598 "%s\tRecursive Stop: %s\n"
599 "%s\tStop When Unneeded: %s\n",
600 prefix
, yes_no(u
->meta
.recursive_stop
),
601 prefix
, yes_no(u
->meta
.stop_when_unneeded
));
603 LIST_FOREACH(by_unit
, b
, u
->meta
.cgroup_bondings
)
604 fprintf(f
, "%s\tControlGroup: %s:%s\n",
605 prefix
, b
->controller
, b
->path
);
607 if (UNIT_VTABLE(u
)->dump
)
608 UNIT_VTABLE(u
)->dump(u
, f
, prefix2
);
610 } else if (u
->meta
.load_state
== UNIT_MERGED
)
612 "%s\tMerged into: %s\n",
613 prefix
, u
->meta
.merged_into
->meta
.id
);
616 job_dump(u
->meta
.job
, f
, prefix2
);
621 /* Common implementation for multiple backends */
622 int unit_load_fragment_and_dropin(Unit
*u
) {
627 /* Load a .service file */
628 if ((r
= unit_load_fragment(u
)) < 0)
631 if (u
->meta
.load_state
== UNIT_STUB
)
634 /* Load drop-in directory data */
635 if ((r
= unit_load_dropin(unit_follow_merge(u
))) < 0)
641 /* Common implementation for multiple backends */
642 int unit_load_fragment_and_dropin_optional(Unit
*u
) {
647 /* Same as unit_load_fragment_and_dropin(), but whether
648 * something can be loaded or not doesn't matter. */
650 /* Load a .service file */
651 if ((r
= unit_load_fragment(u
)) < 0)
654 if (u
->meta
.load_state
== UNIT_STUB
)
655 u
->meta
.load_state
= UNIT_LOADED
;
657 /* Load drop-in directory data */
658 if ((r
= unit_load_dropin(unit_follow_merge(u
))) < 0)
664 /* Common implementation for multiple backends */
665 int unit_load_nop(Unit
*u
) {
668 if (u
->meta
.load_state
== UNIT_STUB
)
669 u
->meta
.load_state
= UNIT_LOADED
;
674 int unit_load(Unit
*u
) {
679 if (u
->meta
.in_load_queue
) {
680 LIST_REMOVE(Meta
, load_queue
, u
->meta
.manager
->load_queue
, &u
->meta
);
681 u
->meta
.in_load_queue
= false;
684 if (u
->meta
.type
== _UNIT_TYPE_INVALID
)
687 if (u
->meta
.load_state
!= UNIT_STUB
)
690 if (UNIT_VTABLE(u
)->load
)
691 if ((r
= UNIT_VTABLE(u
)->load(u
)) < 0)
694 if (u
->meta
.load_state
== UNIT_STUB
) {
699 assert((u
->meta
.load_state
!= UNIT_MERGED
) == !u
->meta
.merged_into
);
701 unit_add_to_dbus_queue(unit_follow_merge(u
));
702 unit_add_to_gc_queue(u
);
707 u
->meta
.load_state
= UNIT_FAILED
;
708 unit_add_to_dbus_queue(u
);
710 log_error("Failed to load configuration for %s: %s", u
->meta
.id
, strerror(-r
));
716 * -EBADR: This unit type does not support starting.
717 * -EALREADY: Unit is already started.
718 * -EAGAIN: An operation is already in progress. Retry later.
720 int unit_start(Unit
*u
) {
721 UnitActiveState state
;
725 /* If this is already (being) started, then this will
726 * succeed. Note that this will even succeed if this unit is
727 * not startable by the user. This is relied on to detect when
728 * we need to wait for units and when waiting is finished. */
729 state
= unit_active_state(u
);
730 if (UNIT_IS_ACTIVE_OR_RELOADING(state
))
733 /* If it is stopped, but we cannot start it, then fail */
734 if (!UNIT_VTABLE(u
)->start
)
737 /* We don't suppress calls to ->start() here when we are
738 * already starting, to allow this request to be used as a
739 * "hurry up" call, for example when the unit is in some "auto
740 * restart" state where it waits for a holdoff timer to elapse
741 * before it will start again. */
743 unit_add_to_dbus_queue(u
);
744 return UNIT_VTABLE(u
)->start(u
);
747 bool unit_can_start(Unit
*u
) {
750 return !!UNIT_VTABLE(u
)->start
;
754 * -EBADR: This unit type does not support stopping.
755 * -EALREADY: Unit is already stopped.
756 * -EAGAIN: An operation is already in progress. Retry later.
758 int unit_stop(Unit
*u
) {
759 UnitActiveState state
;
763 state
= unit_active_state(u
);
764 if (state
== UNIT_INACTIVE
)
767 if (!UNIT_VTABLE(u
)->stop
)
770 unit_add_to_dbus_queue(u
);
771 return UNIT_VTABLE(u
)->stop(u
);
775 * -EBADR: This unit type does not support reloading.
776 * -ENOEXEC: Unit is not started.
777 * -EAGAIN: An operation is already in progress. Retry later.
779 int unit_reload(Unit
*u
) {
780 UnitActiveState state
;
784 if (!unit_can_reload(u
))
787 state
= unit_active_state(u
);
788 if (unit_active_state(u
) == UNIT_ACTIVE_RELOADING
)
791 if (unit_active_state(u
) != UNIT_ACTIVE
)
794 unit_add_to_dbus_queue(u
);
795 return UNIT_VTABLE(u
)->reload(u
);
798 bool unit_can_reload(Unit
*u
) {
801 if (!UNIT_VTABLE(u
)->reload
)
804 if (!UNIT_VTABLE(u
)->can_reload
)
807 return UNIT_VTABLE(u
)->can_reload(u
);
810 static void unit_check_uneeded(Unit
*u
) {
816 /* If this service shall be shut down when unneeded then do
819 if (!u
->meta
.stop_when_unneeded
)
822 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)))
825 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRED_BY
], i
)
826 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
829 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRED_BY_OVERRIDABLE
], i
)
830 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
833 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_WANTED_BY
], i
)
834 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
837 log_debug("Service %s is not needed anymore. Stopping.", u
->meta
.id
);
839 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
840 manager_add_job(u
->meta
.manager
, JOB_STOP
, u
, JOB_FAIL
, true, NULL
);
843 static void retroactively_start_dependencies(Unit
*u
) {
848 assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)));
850 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES
], i
)
851 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
852 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_REPLACE
, true, NULL
);
854 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES_OVERRIDABLE
], i
)
855 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
856 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_FAIL
, false, NULL
);
858 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUISITE
], i
)
859 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
860 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_REPLACE
, true, NULL
);
862 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_WANTS
], i
)
863 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
864 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_FAIL
, false, NULL
);
866 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_CONFLICTS
], i
)
867 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
868 manager_add_job(u
->meta
.manager
, JOB_STOP
, other
, JOB_REPLACE
, true, NULL
);
871 static void retroactively_stop_dependencies(Unit
*u
) {
876 assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u
)));
878 if (u
->meta
.recursive_stop
) {
879 /* Pull down units need us recursively if enabled */
880 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRED_BY
], i
)
881 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
882 manager_add_job(u
->meta
.manager
, JOB_STOP
, other
, JOB_REPLACE
, true, NULL
);
885 /* Garbage collect services that might not be needed anymore, if enabled */
886 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES
], i
)
887 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
888 unit_check_uneeded(other
);
889 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES_OVERRIDABLE
], i
)
890 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
891 unit_check_uneeded(other
);
892 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_WANTS
], i
)
893 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
894 unit_check_uneeded(other
);
895 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUISITE
], i
)
896 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
897 unit_check_uneeded(other
);
898 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUISITE_OVERRIDABLE
], i
)
899 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
900 unit_check_uneeded(other
);
903 void unit_notify(Unit
*u
, UnitActiveState os
, UnitActiveState ns
) {
904 bool unexpected
= false;
907 assert(os
< _UNIT_ACTIVE_STATE_MAX
);
908 assert(ns
< _UNIT_ACTIVE_STATE_MAX
);
910 /* Note that this is called for all low-level state changes,
911 * even if they might map to the same high-level
912 * UnitActiveState! That means that ns == os is OK an expected
913 * behaviour here. For example: if a mount point is remounted
914 * this function will be called too and the utmp code below
917 if (!UNIT_IS_ACTIVE_OR_RELOADING(os
) && UNIT_IS_ACTIVE_OR_RELOADING(ns
))
918 u
->meta
.active_enter_timestamp
= now(CLOCK_REALTIME
);
919 else if (UNIT_IS_ACTIVE_OR_RELOADING(os
) && !UNIT_IS_ACTIVE_OR_RELOADING(ns
))
920 u
->meta
.active_exit_timestamp
= now(CLOCK_REALTIME
);
924 if (u
->meta
.job
->state
== JOB_WAITING
)
926 /* So we reached a different state for this
927 * job. Let's see if we can run it now if it
928 * failed previously due to EAGAIN. */
929 job_add_to_run_queue(u
->meta
.job
);
932 assert(u
->meta
.job
->state
== JOB_RUNNING
);
934 /* Let's check whether this state change
935 * constitutes a finished job, or maybe
936 * cotradicts a running job and hence needs to
937 * invalidate jobs. */
939 switch (u
->meta
.job
->type
) {
942 case JOB_VERIFY_ACTIVE
:
944 if (UNIT_IS_ACTIVE_OR_RELOADING(ns
))
945 job_finish_and_invalidate(u
->meta
.job
, true);
946 else if (ns
!= UNIT_ACTIVATING
) {
948 job_finish_and_invalidate(u
->meta
.job
, false);
954 case JOB_RELOAD_OR_START
:
956 if (ns
== UNIT_ACTIVE
)
957 job_finish_and_invalidate(u
->meta
.job
, true);
958 else if (ns
!= UNIT_ACTIVATING
&& ns
!= UNIT_ACTIVE_RELOADING
) {
960 job_finish_and_invalidate(u
->meta
.job
, false);
967 case JOB_TRY_RESTART
:
969 if (ns
== UNIT_INACTIVE
)
970 job_finish_and_invalidate(u
->meta
.job
, true);
971 else if (ns
!= UNIT_DEACTIVATING
) {
973 job_finish_and_invalidate(u
->meta
.job
, false);
979 assert_not_reached("Job type unknown");
984 /* If this state change happened without being requested by a
985 * job, then let's retroactively start or stop dependencies */
988 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os
) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns
))
989 retroactively_start_dependencies(u
);
990 else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os
) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns
))
991 retroactively_stop_dependencies(u
);
994 /* Some names are special */
995 if (UNIT_IS_ACTIVE_OR_RELOADING(ns
)) {
996 if (unit_has_name(u
, SPECIAL_DBUS_SERVICE
)) {
997 /* The bus just might have become available,
998 * hence try to connect to it, if we aren't
1000 bus_init_system(u
->meta
.manager
);
1001 bus_init_api(u
->meta
.manager
);
1004 if (unit_has_name(u
, SPECIAL_SYSLOG_SERVICE
))
1005 /* The syslog daemon just might have become
1006 * available, hence try to connect to it, if
1007 * we aren't yet connected. */
1010 if (u
->meta
.type
== UNIT_MOUNT
)
1011 /* Another directory became available, let's
1012 * check if that is enough to write our utmp
1014 manager_write_utmp_reboot(u
->meta
.manager
);
1016 if (u
->meta
.type
== UNIT_TARGET
)
1017 /* A target got activated, maybe this is a runlevel? */
1018 manager_write_utmp_runlevel(u
->meta
.manager
, u
);
1020 } else if (!UNIT_IS_ACTIVE_OR_RELOADING(ns
)) {
1022 if (unit_has_name(u
, SPECIAL_SYSLOG_SERVICE
))
1023 /* The syslog daemon might just have
1024 * terminated, hence try to disconnect from
1028 /* We don't care about D-Bus here, since we'll get an
1029 * asynchronous notification for it anyway. */
1032 /* Maybe we finished startup and are now ready for being
1033 * stopped because unneeded? */
1034 unit_check_uneeded(u
);
1036 unit_add_to_dbus_queue(u
);
1037 unit_add_to_gc_queue(u
);
1040 int unit_watch_fd(Unit
*u
, int fd
, uint32_t events
, Watch
*w
) {
1041 struct epoll_event ev
;
1046 assert(w
->type
== WATCH_INVALID
|| (w
->type
== WATCH_FD
&& w
->fd
== fd
&& w
->data
.unit
== u
));
1052 if (epoll_ctl(u
->meta
.manager
->epoll_fd
,
1053 w
->type
== WATCH_INVALID
? EPOLL_CTL_ADD
: EPOLL_CTL_MOD
,
1065 void unit_unwatch_fd(Unit
*u
, Watch
*w
) {
1069 if (w
->type
== WATCH_INVALID
)
1072 assert(w
->type
== WATCH_FD
);
1073 assert(w
->data
.unit
== u
);
1074 assert_se(epoll_ctl(u
->meta
.manager
->epoll_fd
, EPOLL_CTL_DEL
, w
->fd
, NULL
) >= 0);
1077 w
->type
= WATCH_INVALID
;
1078 w
->data
.unit
= NULL
;
1081 int unit_watch_pid(Unit
*u
, pid_t pid
) {
1085 /* Watch a specific PID. We only support one unit watching
1086 * each PID for now. */
1088 return hashmap_put(u
->meta
.manager
->watch_pids
, UINT32_TO_PTR(pid
), u
);
1091 void unit_unwatch_pid(Unit
*u
, pid_t pid
) {
1095 hashmap_remove_value(u
->meta
.manager
->watch_pids
, UINT32_TO_PTR(pid
), u
);
1098 int unit_watch_timer(Unit
*u
, usec_t delay
, Watch
*w
) {
1099 struct itimerspec its
;
1105 assert(w
->type
== WATCH_INVALID
|| (w
->type
== WATCH_TIMER
&& w
->data
.unit
== u
));
1107 /* This will try to reuse the old timer if there is one */
1109 if (w
->type
== WATCH_TIMER
) {
1114 if ((fd
= timerfd_create(CLOCK_MONOTONIC
, TFD_NONBLOCK
|TFD_CLOEXEC
)) < 0)
1121 /* Set absolute time in the past, but not 0, since we
1122 * don't want to disarm the timer */
1123 its
.it_value
.tv_sec
= 0;
1124 its
.it_value
.tv_nsec
= 1;
1126 flags
= TFD_TIMER_ABSTIME
;
1128 timespec_store(&its
.it_value
, delay
);
1132 /* This will also flush the elapse counter */
1133 if (timerfd_settime(fd
, flags
, &its
, NULL
) < 0)
1136 if (w
->type
== WATCH_INVALID
) {
1137 struct epoll_event ev
;
1141 ev
.events
= EPOLLIN
;
1143 if (epoll_ctl(u
->meta
.manager
->epoll_fd
, EPOLL_CTL_ADD
, fd
, &ev
) < 0)
1148 w
->type
= WATCH_TIMER
;
1155 close_nointr_nofail(fd
);
1160 void unit_unwatch_timer(Unit
*u
, Watch
*w
) {
1164 if (w
->type
== WATCH_INVALID
)
1167 assert(w
->type
== WATCH_TIMER
&& w
->data
.unit
== u
);
1169 assert_se(epoll_ctl(u
->meta
.manager
->epoll_fd
, EPOLL_CTL_DEL
, w
->fd
, NULL
) >= 0);
1170 close_nointr_nofail(w
->fd
);
1173 w
->type
= WATCH_INVALID
;
1174 w
->data
.unit
= NULL
;
1177 bool unit_job_is_applicable(Unit
*u
, JobType j
) {
1179 assert(j
>= 0 && j
< _JOB_TYPE_MAX
);
1183 case JOB_VERIFY_ACTIVE
:
1189 case JOB_TRY_RESTART
:
1190 return unit_can_start(u
);
1193 return unit_can_reload(u
);
1195 case JOB_RELOAD_OR_START
:
1196 return unit_can_reload(u
) && unit_can_start(u
);
1199 assert_not_reached("Invalid job type");
1203 int unit_add_dependency(Unit
*u
, UnitDependency d
, Unit
*other
, bool add_reference
) {
1205 static const UnitDependency inverse_table
[_UNIT_DEPENDENCY_MAX
] = {
1206 [UNIT_REQUIRES
] = UNIT_REQUIRED_BY
,
1207 [UNIT_REQUIRES_OVERRIDABLE
] = UNIT_REQUIRED_BY_OVERRIDABLE
,
1208 [UNIT_WANTS
] = UNIT_WANTED_BY
,
1209 [UNIT_REQUISITE
] = UNIT_REQUIRED_BY
,
1210 [UNIT_REQUISITE_OVERRIDABLE
] = UNIT_REQUIRED_BY_OVERRIDABLE
,
1211 [UNIT_REQUIRED_BY
] = _UNIT_DEPENDENCY_INVALID
,
1212 [UNIT_REQUIRED_BY_OVERRIDABLE
] = _UNIT_DEPENDENCY_INVALID
,
1213 [UNIT_WANTED_BY
] = _UNIT_DEPENDENCY_INVALID
,
1214 [UNIT_CONFLICTS
] = UNIT_CONFLICTS
,
1215 [UNIT_BEFORE
] = UNIT_AFTER
,
1216 [UNIT_AFTER
] = UNIT_BEFORE
,
1217 [UNIT_REFERENCES
] = UNIT_REFERENCED_BY
,
1218 [UNIT_REFERENCED_BY
] = UNIT_REFERENCES
1220 int r
, q
= 0, v
= 0, w
= 0;
1223 assert(d
>= 0 && d
< _UNIT_DEPENDENCY_MAX
);
1224 assert(inverse_table
[d
] != _UNIT_DEPENDENCY_INVALID
);
1227 /* We won't allow dependencies on ourselves. We will not
1228 * consider them an error however. */
1232 if (UNIT_VTABLE(u
)->no_requires
&&
1233 (d
== UNIT_REQUIRES
||
1234 d
== UNIT_REQUIRES_OVERRIDABLE
||
1235 d
== UNIT_REQUISITE
||
1236 d
== UNIT_REQUISITE_OVERRIDABLE
)) {
1240 if ((r
= set_ensure_allocated(&u
->meta
.dependencies
[d
], trivial_hash_func
, trivial_compare_func
)) < 0 ||
1241 (r
= set_ensure_allocated(&other
->meta
.dependencies
[inverse_table
[d
]], trivial_hash_func
, trivial_compare_func
)) < 0)
1245 if ((r
= set_ensure_allocated(&u
->meta
.dependencies
[UNIT_REFERENCES
], trivial_hash_func
, trivial_compare_func
)) < 0 ||
1246 (r
= set_ensure_allocated(&other
->meta
.dependencies
[UNIT_REFERENCED_BY
], trivial_hash_func
, trivial_compare_func
)) < 0)
1249 if ((q
= set_put(u
->meta
.dependencies
[d
], other
)) < 0)
1252 if ((v
= set_put(other
->meta
.dependencies
[inverse_table
[d
]], u
)) < 0) {
1257 if (add_reference
) {
1258 if ((w
= set_put(u
->meta
.dependencies
[UNIT_REFERENCES
], other
)) < 0) {
1263 if ((r
= set_put(other
->meta
.dependencies
[UNIT_REFERENCED_BY
], u
)) < 0)
1267 unit_add_to_dbus_queue(u
);
1272 set_remove(u
->meta
.dependencies
[d
], other
);
1275 set_remove(other
->meta
.dependencies
[inverse_table
[d
]], u
);
1278 set_remove(u
->meta
.dependencies
[UNIT_REFERENCES
], other
);
1283 static const char *resolve_template(Unit
*u
, const char *name
, const char*path
, char **p
) {
1287 assert(name
|| path
);
1290 name
= file_name_from_path(path
);
1292 if (!unit_name_is_template(name
)) {
1297 if (u
->meta
.instance
)
1298 s
= unit_name_replace_instance(name
, u
->meta
.instance
);
1302 if (!(i
= unit_name_to_prefix(u
->meta
.id
)))
1305 s
= unit_name_replace_instance(name
, i
);
1316 int unit_add_dependency_by_name(Unit
*u
, UnitDependency d
, const char *name
, const char *path
, bool add_reference
) {
1322 assert(name
|| path
);
1324 if (!(name
= resolve_template(u
, name
, path
, &s
)))
1327 if ((r
= manager_load_unit(u
->meta
.manager
, name
, path
, &other
)) < 0)
1330 r
= unit_add_dependency(u
, d
, other
, add_reference
);
1337 int unit_add_dependency_by_name_inverse(Unit
*u
, UnitDependency d
, const char *name
, const char *path
, bool add_reference
) {
1343 assert(name
|| path
);
1345 if (!(name
= resolve_template(u
, name
, path
, &s
)))
1348 if ((r
= manager_load_unit(u
->meta
.manager
, name
, path
, &other
)) < 0)
1351 r
= unit_add_dependency(other
, d
, u
, add_reference
);
1358 int set_unit_path(const char *p
) {
1362 /* This is mostly for debug purposes */
1364 if (path_is_absolute(p
)) {
1365 if (!(c
= strdup(p
)))
1368 if (!(cwd
= get_current_dir_name()))
1371 r
= asprintf(&c
, "%s/%s", cwd
, p
);
1378 if (setenv("SYSTEMD_UNIT_PATH", c
, 0) < 0) {
1387 char *unit_dbus_path(Unit
*u
) {
1392 if (!(e
= bus_path_escape(u
->meta
.id
)))
1395 if (asprintf(&p
, "/org/freedesktop/systemd1/unit/%s", e
) < 0) {
1404 int unit_add_cgroup(Unit
*u
, CGroupBonding
*b
) {
1412 /* Ensure this hasn't been added yet */
1415 l
= hashmap_get(u
->meta
.manager
->cgroup_bondings
, b
->path
);
1416 LIST_PREPEND(CGroupBonding
, by_path
, l
, b
);
1418 if ((r
= hashmap_replace(u
->meta
.manager
->cgroup_bondings
, b
->path
, l
)) < 0) {
1419 LIST_REMOVE(CGroupBonding
, by_path
, l
, b
);
1423 LIST_PREPEND(CGroupBonding
, by_unit
, u
->meta
.cgroup_bondings
, b
);
1429 static char *default_cgroup_path(Unit
*u
) {
1435 if (u
->meta
.instance
) {
1438 if (!(t
= unit_name_template(u
->meta
.id
)))
1441 r
= asprintf(&p
, "%s/%s/%s", u
->meta
.manager
->cgroup_hierarchy
, t
, u
->meta
.instance
);
1444 r
= asprintf(&p
, "%s/%s", u
->meta
.manager
->cgroup_hierarchy
, u
->meta
.id
);
1446 return r
< 0 ? NULL
: p
;
1449 int unit_add_cgroup_from_text(Unit
*u
, const char *name
) {
1451 char *controller
= NULL
, *path
= NULL
;
1452 CGroupBonding
*b
= NULL
;
1458 /* Detect controller name */
1459 n
= strcspn(name
, ":");
1462 (name
[n
] == ':' && name
[n
+1] == 0)) {
1464 /* Only controller name, no path? */
1466 if (!(path
= default_cgroup_path(u
)))
1472 /* Controller name, and path. */
1475 if (!path_is_absolute(p
))
1478 if (!(path
= strdup(p
)))
1483 controller
= strndup(name
, n
);
1485 controller
= strdup(u
->meta
.manager
->cgroup_controller
);
1492 if (cgroup_bonding_find_list(u
->meta
.cgroup_bondings
, controller
)) {
1497 if (!(b
= new0(CGroupBonding
, 1))) {
1502 b
->controller
= controller
;
1505 b
->clean_up
= false;
1507 if ((r
= unit_add_cgroup(u
, b
)) < 0)
1520 int unit_add_default_cgroup(Unit
*u
) {
1526 /* Adds in the default cgroup data, if it wasn't specified yet */
1528 if (unit_get_default_cgroup(u
))
1531 if (!(b
= new0(CGroupBonding
, 1)))
1534 if (!(b
->controller
= strdup(u
->meta
.manager
->cgroup_controller
)))
1537 if (!(b
->path
= default_cgroup_path(u
)))
1543 if ((r
= unit_add_cgroup(u
, b
)) < 0)
1550 free(b
->controller
);
1556 CGroupBonding
* unit_get_default_cgroup(Unit
*u
) {
1559 return cgroup_bonding_find_list(u
->meta
.cgroup_bondings
, u
->meta
.manager
->cgroup_controller
);
1562 int unit_load_related_unit(Unit
*u
, const char *type
, Unit
**_found
) {
1570 if (!(t
= unit_name_change_suffix(u
->meta
.id
, type
)))
1573 assert(!unit_has_name(u
, t
));
1575 r
= manager_load_unit(u
->meta
.manager
, t
, NULL
, _found
);
1578 assert(r
< 0 || *_found
!= u
);
1583 int unit_get_related_unit(Unit
*u
, const char *type
, Unit
**_found
) {
1591 if (!(t
= unit_name_change_suffix(u
->meta
.id
, type
)))
1594 assert(!unit_has_name(u
, t
));
1596 found
= manager_get_unit(u
->meta
.manager
, t
);
1606 static char *specifier_prefix_and_instance(char specifier
, void *data
, void *userdata
) {
1610 return unit_name_to_prefix_and_instance(u
->meta
.id
);
1613 static char *specifier_prefix(char specifier
, void *data
, void *userdata
) {
1617 return unit_name_to_prefix(u
->meta
.id
);
1620 static char *specifier_prefix_unescaped(char specifier
, void *data
, void *userdata
) {
1626 if (!(p
= unit_name_to_prefix(u
->meta
.id
)))
1629 r
= unit_name_unescape(p
);
1635 static char *specifier_instance_unescaped(char specifier
, void *data
, void *userdata
) {
1639 if (u
->meta
.instance
)
1640 return unit_name_unescape(u
->meta
.instance
);
1645 char *unit_name_printf(Unit
*u
, const char* format
) {
1648 * This will use the passed string as format string and
1649 * replace the following specifiers:
1651 * %n: the full id of the unit (foo@bar.waldo)
1652 * %N: the id of the unit without the suffix (foo@bar)
1653 * %p: the prefix (foo)
1654 * %i: the instance (bar)
1657 const Specifier table
[] = {
1658 { 'n', specifier_string
, u
->meta
.id
},
1659 { 'N', specifier_prefix_and_instance
, NULL
},
1660 { 'p', specifier_prefix
, NULL
},
1661 { 'i', specifier_string
, u
->meta
.instance
},
1668 return specifier_printf(format
, table
, u
);
1671 char *unit_full_printf(Unit
*u
, const char *format
) {
1673 /* This is similar to unit_name_printf() but also supports
1676 const Specifier table
[] = {
1677 { 'n', specifier_string
, u
->meta
.id
},
1678 { 'N', specifier_prefix_and_instance
, NULL
},
1679 { 'p', specifier_prefix
, NULL
},
1680 { 'P', specifier_prefix_unescaped
, NULL
},
1681 { 'i', specifier_string
, u
->meta
.instance
},
1682 { 'I', specifier_instance_unescaped
, NULL
},
1689 return specifier_printf(format
, table
, u
);
1692 char **unit_full_printf_strv(Unit
*u
, char **l
) {
1696 /* Applies unit_full_printf to every entry in l */
1701 if (!(r
= new(char*, n
+1)))
1704 for (i
= l
, j
= r
; *i
; i
++, j
++)
1705 if (!(*j
= unit_full_printf(u
, *i
)))
1721 int unit_watch_bus_name(Unit
*u
, const char *name
) {
1725 /* Watch a specific name on the bus. We only support one unit
1726 * watching each name for now. */
1728 return hashmap_put(u
->meta
.manager
->watch_bus
, name
, u
);
1731 void unit_unwatch_bus_name(Unit
*u
, const char *name
) {
1735 hashmap_remove_value(u
->meta
.manager
->watch_bus
, name
, u
);
1738 bool unit_can_serialize(Unit
*u
) {
1741 return UNIT_VTABLE(u
)->serialize
&& UNIT_VTABLE(u
)->deserialize_item
;
1744 int unit_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1751 if (!unit_can_serialize(u
))
1754 if ((r
= UNIT_VTABLE(u
)->serialize(u
, f
, fds
)) < 0)
1762 void unit_serialize_item_format(Unit
*u
, FILE *f
, const char *key
, const char *format
, ...) {
1773 va_start(ap
, format
);
1774 vfprintf(f
, format
, ap
);
1780 void unit_serialize_item(Unit
*u
, FILE *f
, const char *key
, const char *value
) {
1786 fprintf(f
, "%s=%s\n", key
, value
);
1789 int unit_deserialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1796 if (!unit_can_serialize(u
))
1800 char line
[1024], *l
, *v
;
1803 if (!fgets(line
, sizeof(line
), f
)) {
1815 k
= strcspn(l
, "=");
1823 if ((r
= UNIT_VTABLE(u
)->deserialize_item(u
, l
, v
, fds
)) < 0)
1829 static const char* const unit_type_table
[_UNIT_TYPE_MAX
] = {
1830 [UNIT_SERVICE
] = "service",
1831 [UNIT_TIMER
] = "timer",
1832 [UNIT_SOCKET
] = "socket",
1833 [UNIT_TARGET
] = "target",
1834 [UNIT_DEVICE
] = "device",
1835 [UNIT_MOUNT
] = "mount",
1836 [UNIT_AUTOMOUNT
] = "automount",
1837 [UNIT_SNAPSHOT
] = "snapshot"
1840 DEFINE_STRING_TABLE_LOOKUP(unit_type
, UnitType
);
1842 static const char* const unit_load_state_table
[_UNIT_LOAD_STATE_MAX
] = {
1843 [UNIT_STUB
] = "stub",
1844 [UNIT_LOADED
] = "loaded",
1845 [UNIT_FAILED
] = "failed",
1846 [UNIT_MERGED
] = "merged"
1849 DEFINE_STRING_TABLE_LOOKUP(unit_load_state
, UnitLoadState
);
1851 static const char* const unit_active_state_table
[_UNIT_ACTIVE_STATE_MAX
] = {
1852 [UNIT_ACTIVE
] = "active",
1853 [UNIT_INACTIVE
] = "inactive",
1854 [UNIT_ACTIVATING
] = "activating",
1855 [UNIT_DEACTIVATING
] = "deactivating"
1858 DEFINE_STRING_TABLE_LOOKUP(unit_active_state
, UnitActiveState
);
1860 static const char* const unit_dependency_table
[_UNIT_DEPENDENCY_MAX
] = {
1861 [UNIT_REQUIRES
] = "Requires",
1862 [UNIT_REQUIRES_OVERRIDABLE
] = "RequiresOverridable",
1863 [UNIT_WANTS
] = "Wants",
1864 [UNIT_REQUISITE
] = "Requisite",
1865 [UNIT_REQUISITE_OVERRIDABLE
] = "RequisiteOverridable",
1866 [UNIT_REQUIRED_BY
] = "RequiredBy",
1867 [UNIT_REQUIRED_BY_OVERRIDABLE
] = "RequiredByOverridable",
1868 [UNIT_WANTED_BY
] = "WantedBy",
1869 [UNIT_CONFLICTS
] = "Conflicts",
1870 [UNIT_BEFORE
] = "Before",
1871 [UNIT_AFTER
] = "After",
1872 [UNIT_REFERENCES
] = "References",
1873 [UNIT_REFERENCED_BY
] = "ReferencedBy"
1876 DEFINE_STRING_TABLE_LOOKUP(unit_dependency
, UnitDependency
);
1878 static const char* const kill_mode_table
[_KILL_MODE_MAX
] = {
1879 [KILL_CONTROL_GROUP
] = "control-group",
1880 [KILL_PROCESS_GROUP
] = "process-group",
1881 [KILL_PROCESS
] = "process",
1882 [KILL_NONE
] = "none"
1885 DEFINE_STRING_TABLE_LOOKUP(kill_mode
, KillMode
);