1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include <sys/epoll.h>
26 #include <sys/timerfd.h>
35 #include "load-fragment.h"
36 #include "load-dropin.h"
38 #include "unit-name.h"
39 #include "specifier.h"
40 #include "dbus-unit.h"
43 const UnitVTable
* const unit_vtable
[_UNIT_TYPE_MAX
] = {
44 [UNIT_SERVICE
] = &service_vtable
,
45 [UNIT_TIMER
] = &timer_vtable
,
46 [UNIT_SOCKET
] = &socket_vtable
,
47 [UNIT_TARGET
] = &target_vtable
,
48 [UNIT_DEVICE
] = &device_vtable
,
49 [UNIT_MOUNT
] = &mount_vtable
,
50 [UNIT_AUTOMOUNT
] = &automount_vtable
,
51 [UNIT_SNAPSHOT
] = &snapshot_vtable
,
52 [UNIT_SWAP
] = &swap_vtable
,
53 [UNIT_PATH
] = &path_vtable
56 Unit
*unit_new(Manager
*m
) {
61 if (!(u
= new0(Unit
, 1)))
64 if (!(u
->meta
.names
= set_new(string_hash_func
, string_compare_func
))) {
70 u
->meta
.type
= _UNIT_TYPE_INVALID
;
71 u
->meta
.deserialized_job
= _JOB_TYPE_INVALID
;
76 bool unit_has_name(Unit
*u
, const char *name
) {
80 return !!set_get(u
->meta
.names
, (char*) name
);
83 int unit_add_name(Unit
*u
, const char *text
) {
85 char *s
= NULL
, *i
= NULL
;
91 if (unit_name_is_template(text
)) {
92 if (!u
->meta
.instance
)
95 s
= unit_name_replace_instance(text
, u
->meta
.instance
);
102 if (!unit_name_is_valid(s
)) {
107 assert_se((t
= unit_name_to_type(s
)) >= 0);
109 if (u
->meta
.type
!= _UNIT_TYPE_INVALID
&& t
!= u
->meta
.type
) {
114 if ((r
= unit_name_to_instance(s
, &i
)) < 0)
117 if (i
&& unit_vtable
[t
]->no_instances
)
120 if (u
->meta
.type
!= _UNIT_TYPE_INVALID
&& !streq_ptr(u
->meta
.instance
, i
)) {
125 if (unit_vtable
[t
]->no_alias
&&
126 !set_isempty(u
->meta
.names
) &&
127 !set_get(u
->meta
.names
, s
)) {
132 if (hashmap_size(u
->meta
.manager
->units
) >= MANAGER_MAX_NAMES
) {
137 if ((r
= set_put(u
->meta
.names
, s
)) < 0) {
143 if ((r
= hashmap_put(u
->meta
.manager
->units
, s
, u
)) < 0) {
144 set_remove(u
->meta
.names
, s
);
148 if (u
->meta
.type
== _UNIT_TYPE_INVALID
) {
152 u
->meta
.instance
= i
;
154 LIST_PREPEND(Meta
, units_per_type
, u
->meta
.manager
->units_per_type
[t
], &u
->meta
);
156 if (UNIT_VTABLE(u
)->init
)
157 UNIT_VTABLE(u
)->init(u
);
161 unit_add_to_dbus_queue(u
);
171 int unit_choose_id(Unit
*u
, const char *name
) {
177 if (unit_name_is_template(name
)) {
179 if (!u
->meta
.instance
)
182 if (!(t
= unit_name_replace_instance(name
, u
->meta
.instance
)))
188 /* Selects one of the names of this unit as the id */
189 s
= set_get(u
->meta
.names
, (char*) name
);
196 unit_add_to_dbus_queue(u
);
201 int unit_set_description(Unit
*u
, const char *description
) {
206 if (!(s
= strdup(description
)))
209 free(u
->meta
.description
);
210 u
->meta
.description
= s
;
212 unit_add_to_dbus_queue(u
);
216 bool unit_check_gc(Unit
*u
) {
219 if (u
->meta
.load_state
== UNIT_STUB
)
222 if (UNIT_VTABLE(u
)->no_gc
)
228 if (unit_active_state(u
) != UNIT_INACTIVE
)
231 if (UNIT_VTABLE(u
)->check_gc
)
232 if (UNIT_VTABLE(u
)->check_gc(u
))
238 void unit_add_to_load_queue(Unit
*u
) {
240 assert(u
->meta
.type
!= _UNIT_TYPE_INVALID
);
242 if (u
->meta
.load_state
!= UNIT_STUB
|| u
->meta
.in_load_queue
)
245 LIST_PREPEND(Meta
, load_queue
, u
->meta
.manager
->load_queue
, &u
->meta
);
246 u
->meta
.in_load_queue
= true;
249 void unit_add_to_cleanup_queue(Unit
*u
) {
252 if (u
->meta
.in_cleanup_queue
)
255 LIST_PREPEND(Meta
, cleanup_queue
, u
->meta
.manager
->cleanup_queue
, &u
->meta
);
256 u
->meta
.in_cleanup_queue
= true;
259 void unit_add_to_gc_queue(Unit
*u
) {
262 if (u
->meta
.in_gc_queue
|| u
->meta
.in_cleanup_queue
)
265 if (unit_check_gc(u
))
268 LIST_PREPEND(Meta
, gc_queue
, u
->meta
.manager
->gc_queue
, &u
->meta
);
269 u
->meta
.in_gc_queue
= true;
271 u
->meta
.manager
->n_in_gc_queue
++;
273 if (u
->meta
.manager
->gc_queue_timestamp
<= 0)
274 u
->meta
.manager
->gc_queue_timestamp
= now(CLOCK_MONOTONIC
);
277 void unit_add_to_dbus_queue(Unit
*u
) {
279 assert(u
->meta
.type
!= _UNIT_TYPE_INVALID
);
281 if (u
->meta
.load_state
== UNIT_STUB
|| u
->meta
.in_dbus_queue
)
284 if (set_isempty(u
->meta
.manager
->subscribed
)) {
285 u
->meta
.sent_dbus_new_signal
= true;
289 LIST_PREPEND(Meta
, dbus_queue
, u
->meta
.manager
->dbus_unit_queue
, &u
->meta
);
290 u
->meta
.in_dbus_queue
= true;
293 static void bidi_set_free(Unit
*u
, Set
*s
) {
299 /* Frees the set and makes sure we are dropped from the
300 * inverse pointers */
302 SET_FOREACH(other
, s
, i
) {
305 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++)
306 set_remove(other
->meta
.dependencies
[d
], u
);
308 unit_add_to_gc_queue(other
);
314 void unit_free(Unit
*u
) {
321 bus_unit_send_removed_signal(u
);
323 if (u
->meta
.load_state
!= UNIT_STUB
)
324 if (UNIT_VTABLE(u
)->done
)
325 UNIT_VTABLE(u
)->done(u
);
327 SET_FOREACH(t
, u
->meta
.names
, i
)
328 hashmap_remove_value(u
->meta
.manager
->units
, t
, u
);
331 job_free(u
->meta
.job
);
333 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++)
334 bidi_set_free(u
, u
->meta
.dependencies
[d
]);
336 if (u
->meta
.type
!= _UNIT_TYPE_INVALID
)
337 LIST_REMOVE(Meta
, units_per_type
, u
->meta
.manager
->units_per_type
[u
->meta
.type
], &u
->meta
);
339 if (u
->meta
.in_load_queue
)
340 LIST_REMOVE(Meta
, load_queue
, u
->meta
.manager
->load_queue
, &u
->meta
);
342 if (u
->meta
.in_dbus_queue
)
343 LIST_REMOVE(Meta
, dbus_queue
, u
->meta
.manager
->dbus_unit_queue
, &u
->meta
);
345 if (u
->meta
.in_cleanup_queue
)
346 LIST_REMOVE(Meta
, cleanup_queue
, u
->meta
.manager
->cleanup_queue
, &u
->meta
);
348 if (u
->meta
.in_gc_queue
) {
349 LIST_REMOVE(Meta
, gc_queue
, u
->meta
.manager
->gc_queue
, &u
->meta
);
350 u
->meta
.manager
->n_in_gc_queue
--;
353 cgroup_bonding_free_list(u
->meta
.cgroup_bondings
);
355 free(u
->meta
.description
);
356 free(u
->meta
.fragment_path
);
358 set_free_free(u
->meta
.names
);
360 free(u
->meta
.instance
);
365 UnitActiveState
unit_active_state(Unit
*u
) {
368 if (u
->meta
.load_state
!= UNIT_LOADED
)
369 return UNIT_INACTIVE
;
371 return UNIT_VTABLE(u
)->active_state(u
);
374 const char* unit_sub_state_to_string(Unit
*u
) {
377 return UNIT_VTABLE(u
)->sub_state_to_string(u
);
380 static void complete_move(Set
**s
, Set
**other
) {
388 set_move(*s
, *other
);
395 static void merge_names(Unit
*u
, Unit
*other
) {
402 complete_move(&u
->meta
.names
, &other
->meta
.names
);
404 set_free_free(other
->meta
.names
);
405 other
->meta
.names
= NULL
;
406 other
->meta
.id
= NULL
;
408 SET_FOREACH(t
, u
->meta
.names
, i
)
409 assert_se(hashmap_replace(u
->meta
.manager
->units
, t
, u
) == 0);
412 static void merge_dependencies(Unit
*u
, Unit
*other
, UnitDependency d
) {
419 assert(d
< _UNIT_DEPENDENCY_MAX
);
421 SET_FOREACH(back
, other
->meta
.dependencies
[d
], i
) {
424 for (k
= 0; k
< _UNIT_DEPENDENCY_MAX
; k
++)
425 if ((r
= set_remove_and_put(back
->meta
.dependencies
[k
], other
, u
)) < 0) {
428 set_remove(back
->meta
.dependencies
[k
], other
);
430 assert(r
== -ENOENT
);
434 complete_move(&u
->meta
.dependencies
[d
], &other
->meta
.dependencies
[d
]);
436 set_free(other
->meta
.dependencies
[d
]);
437 other
->meta
.dependencies
[d
] = NULL
;
440 int unit_merge(Unit
*u
, Unit
*other
) {
445 assert(u
->meta
.manager
== other
->meta
.manager
);
446 assert(u
->meta
.type
!= _UNIT_TYPE_INVALID
);
448 other
= unit_follow_merge(other
);
453 if (u
->meta
.type
!= other
->meta
.type
)
456 if (!streq_ptr(u
->meta
.instance
, other
->meta
.instance
))
459 if (other
->meta
.load_state
!= UNIT_STUB
&&
460 other
->meta
.load_state
!= UNIT_FAILED
)
466 if (unit_active_state(other
) != UNIT_INACTIVE
)
470 merge_names(u
, other
);
472 /* Merge dependencies */
473 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++)
474 merge_dependencies(u
, other
, d
);
476 other
->meta
.load_state
= UNIT_MERGED
;
477 other
->meta
.merged_into
= u
;
479 /* If there is still some data attached to the other node, we
480 * don't need it anymore, and can free it. */
481 if (other
->meta
.load_state
!= UNIT_STUB
)
482 if (UNIT_VTABLE(other
)->done
)
483 UNIT_VTABLE(other
)->done(other
);
485 unit_add_to_dbus_queue(u
);
486 unit_add_to_cleanup_queue(other
);
491 int unit_merge_by_name(Unit
*u
, const char *name
) {
499 if (unit_name_is_template(name
)) {
500 if (!u
->meta
.instance
)
503 if (!(s
= unit_name_replace_instance(name
, u
->meta
.instance
)))
509 if (!(other
= manager_get_unit(u
->meta
.manager
, name
)))
510 r
= unit_add_name(u
, name
);
512 r
= unit_merge(u
, other
);
518 Unit
* unit_follow_merge(Unit
*u
) {
521 while (u
->meta
.load_state
== UNIT_MERGED
)
522 assert_se(u
= u
->meta
.merged_into
);
527 int unit_add_exec_dependencies(Unit
*u
, ExecContext
*c
) {
533 if (c
->std_output
!= EXEC_OUTPUT_KMSG
&&
534 c
->std_output
!= EXEC_OUTPUT_SYSLOG
&&
535 c
->std_error
!= EXEC_OUTPUT_KMSG
&&
536 c
->std_error
!= EXEC_OUTPUT_SYSLOG
)
539 /* If syslog or kernel logging is requested, make sure our own
540 * logging daemon is run first. */
542 if ((r
= unit_add_dependency_by_name(u
, UNIT_AFTER
, SPECIAL_LOGGER_SOCKET
, NULL
, true)) < 0)
545 if (u
->meta
.manager
->running_as
== MANAGER_SYSTEM
)
546 if ((r
= unit_add_dependency_by_name(u
, UNIT_REQUIRES
, SPECIAL_LOGGER_SOCKET
, NULL
, true)) < 0)
552 const char *unit_description(Unit
*u
) {
555 if (u
->meta
.description
)
556 return u
->meta
.description
;
561 void unit_dump(Unit
*u
, FILE *f
, const char *prefix
) {
569 timestamp1
[FORMAT_TIMESTAMP_MAX
],
570 timestamp2
[FORMAT_TIMESTAMP_MAX
],
571 timestamp3
[FORMAT_TIMESTAMP_MAX
],
572 timestamp4
[FORMAT_TIMESTAMP_MAX
];
575 assert(u
->meta
.type
>= 0);
579 p2
= strappend(prefix
, "\t");
580 prefix2
= p2
? p2
: prefix
;
584 "%s\tDescription: %s\n"
586 "%s\tUnit Load State: %s\n"
587 "%s\tUnit Active State: %s\n"
588 "%s\tInactive Exit Timestamp: %s\n"
589 "%s\tActive Enter Timestamp: %s\n"
590 "%s\tActive Exit Timestamp: %s\n"
591 "%s\tInactive Enter Timestamp: %s\n"
592 "%s\tGC Check Good: %s\n"
593 "%s\tOnly By Dependency: %s\n",
595 prefix
, unit_description(u
),
596 prefix
, strna(u
->meta
.instance
),
597 prefix
, unit_load_state_to_string(u
->meta
.load_state
),
598 prefix
, unit_active_state_to_string(unit_active_state(u
)),
599 prefix
, strna(format_timestamp(timestamp1
, sizeof(timestamp1
), u
->meta
.inactive_exit_timestamp
.realtime
)),
600 prefix
, strna(format_timestamp(timestamp2
, sizeof(timestamp2
), u
->meta
.active_enter_timestamp
.realtime
)),
601 prefix
, strna(format_timestamp(timestamp3
, sizeof(timestamp3
), u
->meta
.active_exit_timestamp
.realtime
)),
602 prefix
, strna(format_timestamp(timestamp4
, sizeof(timestamp4
), u
->meta
.inactive_enter_timestamp
.realtime
)),
603 prefix
, yes_no(unit_check_gc(u
)),
604 prefix
, yes_no(u
->meta
.only_by_dependency
));
606 SET_FOREACH(t
, u
->meta
.names
, i
)
607 fprintf(f
, "%s\tName: %s\n", prefix
, t
);
609 if (u
->meta
.fragment_path
)
610 fprintf(f
, "%s\tFragment Path: %s\n", prefix
, u
->meta
.fragment_path
);
612 for (d
= 0; d
< _UNIT_DEPENDENCY_MAX
; d
++) {
615 SET_FOREACH(other
, u
->meta
.dependencies
[d
], i
)
616 fprintf(f
, "%s\t%s: %s\n", prefix
, unit_dependency_to_string(d
), other
->meta
.id
);
619 if (u
->meta
.load_state
== UNIT_LOADED
) {
621 "%s\tRecursive Stop: %s\n"
622 "%s\tStop When Unneeded: %s\n",
623 prefix
, yes_no(u
->meta
.recursive_stop
),
624 prefix
, yes_no(u
->meta
.stop_when_unneeded
));
626 LIST_FOREACH(by_unit
, b
, u
->meta
.cgroup_bondings
)
627 fprintf(f
, "%s\tControlGroup: %s:%s\n",
628 prefix
, b
->controller
, b
->path
);
630 if (UNIT_VTABLE(u
)->dump
)
631 UNIT_VTABLE(u
)->dump(u
, f
, prefix2
);
633 } else if (u
->meta
.load_state
== UNIT_MERGED
)
635 "%s\tMerged into: %s\n",
636 prefix
, u
->meta
.merged_into
->meta
.id
);
639 job_dump(u
->meta
.job
, f
, prefix2
);
644 /* Common implementation for multiple backends */
645 int unit_load_fragment_and_dropin(Unit
*u
) {
650 /* Load a .service file */
651 if ((r
= unit_load_fragment(u
)) < 0)
654 if (u
->meta
.load_state
== UNIT_STUB
)
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_fragment_and_dropin_optional(Unit
*u
) {
670 /* Same as unit_load_fragment_and_dropin(), but whether
671 * something can be loaded or not doesn't matter. */
673 /* Load a .service file */
674 if ((r
= unit_load_fragment(u
)) < 0)
677 if (u
->meta
.load_state
== UNIT_STUB
)
678 u
->meta
.load_state
= UNIT_LOADED
;
680 /* Load drop-in directory data */
681 if ((r
= unit_load_dropin(unit_follow_merge(u
))) < 0)
687 /* Common implementation for multiple backends */
688 int unit_load_nop(Unit
*u
) {
691 if (u
->meta
.load_state
== UNIT_STUB
)
692 u
->meta
.load_state
= UNIT_LOADED
;
697 int unit_load(Unit
*u
) {
702 if (u
->meta
.in_load_queue
) {
703 LIST_REMOVE(Meta
, load_queue
, u
->meta
.manager
->load_queue
, &u
->meta
);
704 u
->meta
.in_load_queue
= false;
707 if (u
->meta
.type
== _UNIT_TYPE_INVALID
)
710 if (u
->meta
.load_state
!= UNIT_STUB
)
713 if (UNIT_VTABLE(u
)->load
)
714 if ((r
= UNIT_VTABLE(u
)->load(u
)) < 0)
717 if (u
->meta
.load_state
== UNIT_STUB
) {
722 assert((u
->meta
.load_state
!= UNIT_MERGED
) == !u
->meta
.merged_into
);
724 unit_add_to_dbus_queue(unit_follow_merge(u
));
725 unit_add_to_gc_queue(u
);
730 u
->meta
.load_state
= UNIT_FAILED
;
731 unit_add_to_dbus_queue(u
);
733 log_debug("Failed to load configuration for %s: %s", u
->meta
.id
, strerror(-r
));
739 * -EBADR: This unit type does not support starting.
740 * -EALREADY: Unit is already started.
741 * -EAGAIN: An operation is already in progress. Retry later.
742 * -ECANCELED: Too many requests for now.
744 int unit_start(Unit
*u
) {
745 UnitActiveState state
;
749 /* If this is already (being) started, then this will
750 * succeed. Note that this will even succeed if this unit is
751 * not startable by the user. This is relied on to detect when
752 * we need to wait for units and when waiting is finished. */
753 state
= unit_active_state(u
);
754 if (UNIT_IS_ACTIVE_OR_RELOADING(state
))
757 /* If it is stopped, but we cannot start it, then fail */
758 if (!UNIT_VTABLE(u
)->start
)
761 /* We don't suppress calls to ->start() here when we are
762 * already starting, to allow this request to be used as a
763 * "hurry up" call, for example when the unit is in some "auto
764 * restart" state where it waits for a holdoff timer to elapse
765 * before it will start again. */
767 unit_add_to_dbus_queue(u
);
768 return UNIT_VTABLE(u
)->start(u
);
771 bool unit_can_start(Unit
*u
) {
774 return !!UNIT_VTABLE(u
)->start
;
778 * -EBADR: This unit type does not support stopping.
779 * -EALREADY: Unit is already stopped.
780 * -EAGAIN: An operation is already in progress. Retry later.
782 int unit_stop(Unit
*u
) {
783 UnitActiveState state
;
787 state
= unit_active_state(u
);
788 if (state
== UNIT_INACTIVE
)
791 if (!UNIT_VTABLE(u
)->stop
)
794 unit_add_to_dbus_queue(u
);
795 return UNIT_VTABLE(u
)->stop(u
);
799 * -EBADR: This unit type does not support reloading.
800 * -ENOEXEC: Unit is not started.
801 * -EAGAIN: An operation is already in progress. Retry later.
803 int unit_reload(Unit
*u
) {
804 UnitActiveState state
;
808 if (!unit_can_reload(u
))
811 state
= unit_active_state(u
);
812 if (unit_active_state(u
) == UNIT_ACTIVE_RELOADING
)
815 if (unit_active_state(u
) != UNIT_ACTIVE
)
818 unit_add_to_dbus_queue(u
);
819 return UNIT_VTABLE(u
)->reload(u
);
822 bool unit_can_reload(Unit
*u
) {
825 if (!UNIT_VTABLE(u
)->reload
)
828 if (!UNIT_VTABLE(u
)->can_reload
)
831 return UNIT_VTABLE(u
)->can_reload(u
);
834 static void unit_check_uneeded(Unit
*u
) {
840 /* If this service shall be shut down when unneeded then do
843 if (!u
->meta
.stop_when_unneeded
)
846 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)))
849 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRED_BY
], i
)
850 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
853 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRED_BY_OVERRIDABLE
], i
)
854 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
857 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_WANTED_BY
], i
)
858 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
861 log_debug("Service %s is not needed anymore. Stopping.", u
->meta
.id
);
863 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
864 manager_add_job(u
->meta
.manager
, JOB_STOP
, u
, JOB_FAIL
, true, NULL
);
867 static void retroactively_start_dependencies(Unit
*u
) {
872 assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u
)));
874 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES
], i
)
875 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
876 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_REPLACE
, true, NULL
);
878 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES_OVERRIDABLE
], i
)
879 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
880 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_FAIL
, false, NULL
);
882 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUISITE
], i
)
883 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
884 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_REPLACE
, true, NULL
);
886 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_WANTS
], i
)
887 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
888 manager_add_job(u
->meta
.manager
, JOB_START
, other
, JOB_FAIL
, false, NULL
);
890 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_CONFLICTS
], i
)
891 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other
)))
892 manager_add_job(u
->meta
.manager
, JOB_STOP
, other
, JOB_REPLACE
, true, NULL
);
895 static void retroactively_stop_dependencies(Unit
*u
) {
900 assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u
)));
902 if (u
->meta
.recursive_stop
) {
903 /* Pull down units need us recursively if enabled */
904 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRED_BY
], i
)
905 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
906 manager_add_job(u
->meta
.manager
, JOB_STOP
, other
, JOB_REPLACE
, true, NULL
);
909 /* Garbage collect services that might not be needed anymore, if enabled */
910 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES
], i
)
911 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
912 unit_check_uneeded(other
);
913 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUIRES_OVERRIDABLE
], i
)
914 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
915 unit_check_uneeded(other
);
916 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_WANTS
], i
)
917 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
918 unit_check_uneeded(other
);
919 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUISITE
], i
)
920 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
921 unit_check_uneeded(other
);
922 SET_FOREACH(other
, u
->meta
.dependencies
[UNIT_REQUISITE_OVERRIDABLE
], i
)
923 if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other
)))
924 unit_check_uneeded(other
);
927 void unit_notify(Unit
*u
, UnitActiveState os
, UnitActiveState ns
) {
928 bool unexpected
= false;
932 assert(os
< _UNIT_ACTIVE_STATE_MAX
);
933 assert(ns
< _UNIT_ACTIVE_STATE_MAX
);
935 /* Note that this is called for all low-level state changes,
936 * even if they might map to the same high-level
937 * UnitActiveState! That means that ns == os is OK an expected
938 * behaviour here. For example: if a mount point is remounted
939 * this function will be called too and the utmp code below
942 dual_timestamp_get(&ts
);
944 if (os
== UNIT_INACTIVE
&& ns
!= UNIT_INACTIVE
)
945 u
->meta
.inactive_exit_timestamp
= ts
;
946 else if (os
!= UNIT_INACTIVE
&& ns
== UNIT_INACTIVE
)
947 u
->meta
.inactive_enter_timestamp
= ts
;
949 if (!UNIT_IS_ACTIVE_OR_RELOADING(os
) && UNIT_IS_ACTIVE_OR_RELOADING(ns
))
950 u
->meta
.active_enter_timestamp
= ts
;
951 else if (UNIT_IS_ACTIVE_OR_RELOADING(os
) && !UNIT_IS_ACTIVE_OR_RELOADING(ns
))
952 u
->meta
.active_exit_timestamp
= ts
;
954 timer_unit_notify(u
, ns
);
955 path_unit_notify(u
, ns
);
959 if (u
->meta
.job
->state
== JOB_WAITING
)
961 /* So we reached a different state for this
962 * job. Let's see if we can run it now if it
963 * failed previously due to EAGAIN. */
964 job_add_to_run_queue(u
->meta
.job
);
967 /* Let's check whether this state change constitutes a
968 * finished job, or maybe cotradicts a running job and
969 * hence needs to invalidate jobs. */
971 switch (u
->meta
.job
->type
) {
974 case JOB_VERIFY_ACTIVE
:
976 if (UNIT_IS_ACTIVE_OR_RELOADING(ns
))
977 job_finish_and_invalidate(u
->meta
.job
, true);
978 else if (u
->meta
.job
->state
== JOB_RUNNING
&& ns
!= UNIT_ACTIVATING
) {
980 job_finish_and_invalidate(u
->meta
.job
, false);
986 case JOB_RELOAD_OR_START
:
988 if (u
->meta
.job
->state
== JOB_RUNNING
) {
989 if (ns
== UNIT_ACTIVE
)
990 job_finish_and_invalidate(u
->meta
.job
, true);
991 else if (ns
!= UNIT_ACTIVATING
&& ns
!= UNIT_ACTIVE_RELOADING
) {
993 job_finish_and_invalidate(u
->meta
.job
, false);
1001 case JOB_TRY_RESTART
:
1003 if (ns
== UNIT_INACTIVE
)
1004 job_finish_and_invalidate(u
->meta
.job
, true);
1005 else if (u
->meta
.job
->state
== JOB_RUNNING
&& ns
!= UNIT_DEACTIVATING
) {
1007 job_finish_and_invalidate(u
->meta
.job
, false);
1013 assert_not_reached("Job type unknown");
1017 /* If this state change happened without being requested by a
1018 * job, then let's retroactively start or stop dependencies */
1021 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os
) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns
))
1022 retroactively_start_dependencies(u
);
1023 else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os
) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns
))
1024 retroactively_stop_dependencies(u
);
1027 /* Some names are special */
1028 if (UNIT_IS_ACTIVE_OR_RELOADING(ns
)) {
1029 if (unit_has_name(u
, SPECIAL_DBUS_SERVICE
)) {
1030 /* The bus just might have become available,
1031 * hence try to connect to it, if we aren't
1033 bus_init(u
->meta
.manager
);
1036 if (unit_has_name(u
, SPECIAL_SYSLOG_SERVICE
))
1037 /* The syslog daemon just might have become
1038 * available, hence try to connect to it, if
1039 * we aren't yet connected. */
1042 if (u
->meta
.type
== UNIT_MOUNT
)
1043 /* Another directory became available, let's
1044 * check if that is enough to write our utmp
1046 manager_write_utmp_reboot(u
->meta
.manager
);
1048 if (u
->meta
.type
== UNIT_TARGET
)
1049 /* A target got activated, maybe this is a runlevel? */
1050 manager_write_utmp_runlevel(u
->meta
.manager
, u
);
1052 } else if (!UNIT_IS_ACTIVE_OR_RELOADING(ns
)) {
1054 if (unit_has_name(u
, SPECIAL_SYSLOG_SERVICE
))
1055 /* The syslog daemon might just have
1056 * terminated, hence try to disconnect from
1060 /* We don't care about D-Bus here, since we'll get an
1061 * asynchronous notification for it anyway. */
1064 /* Maybe we finished startup and are now ready for being
1065 * stopped because unneeded? */
1066 unit_check_uneeded(u
);
1068 unit_add_to_dbus_queue(u
);
1069 unit_add_to_gc_queue(u
);
1072 int unit_watch_fd(Unit
*u
, int fd
, uint32_t events
, Watch
*w
) {
1073 struct epoll_event ev
;
1078 assert(w
->type
== WATCH_INVALID
|| (w
->type
== WATCH_FD
&& w
->fd
== fd
&& w
->data
.unit
== u
));
1084 if (epoll_ctl(u
->meta
.manager
->epoll_fd
,
1085 w
->type
== WATCH_INVALID
? EPOLL_CTL_ADD
: EPOLL_CTL_MOD
,
1097 void unit_unwatch_fd(Unit
*u
, Watch
*w
) {
1101 if (w
->type
== WATCH_INVALID
)
1104 assert(w
->type
== WATCH_FD
);
1105 assert(w
->data
.unit
== u
);
1106 assert_se(epoll_ctl(u
->meta
.manager
->epoll_fd
, EPOLL_CTL_DEL
, w
->fd
, NULL
) >= 0);
1109 w
->type
= WATCH_INVALID
;
1110 w
->data
.unit
= NULL
;
1113 int unit_watch_pid(Unit
*u
, pid_t pid
) {
1117 /* Watch a specific PID. We only support one unit watching
1118 * each PID for now. */
1120 return hashmap_put(u
->meta
.manager
->watch_pids
, UINT32_TO_PTR(pid
), u
);
1123 void unit_unwatch_pid(Unit
*u
, pid_t pid
) {
1127 hashmap_remove_value(u
->meta
.manager
->watch_pids
, UINT32_TO_PTR(pid
), u
);
1130 int unit_watch_timer(Unit
*u
, usec_t delay
, Watch
*w
) {
1131 struct itimerspec its
;
1137 assert(w
->type
== WATCH_INVALID
|| (w
->type
== WATCH_TIMER
&& w
->data
.unit
== u
));
1139 /* This will try to reuse the old timer if there is one */
1141 if (w
->type
== WATCH_TIMER
) {
1146 if ((fd
= timerfd_create(CLOCK_MONOTONIC
, TFD_NONBLOCK
|TFD_CLOEXEC
)) < 0)
1153 /* Set absolute time in the past, but not 0, since we
1154 * don't want to disarm the timer */
1155 its
.it_value
.tv_sec
= 0;
1156 its
.it_value
.tv_nsec
= 1;
1158 flags
= TFD_TIMER_ABSTIME
;
1160 timespec_store(&its
.it_value
, delay
);
1164 /* This will also flush the elapse counter */
1165 if (timerfd_settime(fd
, flags
, &its
, NULL
) < 0)
1168 if (w
->type
== WATCH_INVALID
) {
1169 struct epoll_event ev
;
1173 ev
.events
= EPOLLIN
;
1175 if (epoll_ctl(u
->meta
.manager
->epoll_fd
, EPOLL_CTL_ADD
, fd
, &ev
) < 0)
1180 w
->type
= WATCH_TIMER
;
1187 close_nointr_nofail(fd
);
1192 void unit_unwatch_timer(Unit
*u
, Watch
*w
) {
1196 if (w
->type
== WATCH_INVALID
)
1199 assert(w
->type
== WATCH_TIMER
&& w
->data
.unit
== u
);
1201 assert_se(epoll_ctl(u
->meta
.manager
->epoll_fd
, EPOLL_CTL_DEL
, w
->fd
, NULL
) >= 0);
1202 close_nointr_nofail(w
->fd
);
1205 w
->type
= WATCH_INVALID
;
1206 w
->data
.unit
= NULL
;
1209 bool unit_job_is_applicable(Unit
*u
, JobType j
) {
1211 assert(j
>= 0 && j
< _JOB_TYPE_MAX
);
1215 case JOB_VERIFY_ACTIVE
:
1221 case JOB_TRY_RESTART
:
1222 return unit_can_start(u
);
1225 return unit_can_reload(u
);
1227 case JOB_RELOAD_OR_START
:
1228 return unit_can_reload(u
) && unit_can_start(u
);
1231 assert_not_reached("Invalid job type");
1235 int unit_add_dependency(Unit
*u
, UnitDependency d
, Unit
*other
, bool add_reference
) {
1237 static const UnitDependency inverse_table
[_UNIT_DEPENDENCY_MAX
] = {
1238 [UNIT_REQUIRES
] = UNIT_REQUIRED_BY
,
1239 [UNIT_REQUIRES_OVERRIDABLE
] = UNIT_REQUIRED_BY_OVERRIDABLE
,
1240 [UNIT_WANTS
] = UNIT_WANTED_BY
,
1241 [UNIT_REQUISITE
] = UNIT_REQUIRED_BY
,
1242 [UNIT_REQUISITE_OVERRIDABLE
] = UNIT_REQUIRED_BY_OVERRIDABLE
,
1243 [UNIT_REQUIRED_BY
] = _UNIT_DEPENDENCY_INVALID
,
1244 [UNIT_REQUIRED_BY_OVERRIDABLE
] = _UNIT_DEPENDENCY_INVALID
,
1245 [UNIT_WANTED_BY
] = _UNIT_DEPENDENCY_INVALID
,
1246 [UNIT_CONFLICTS
] = UNIT_CONFLICTS
,
1247 [UNIT_BEFORE
] = UNIT_AFTER
,
1248 [UNIT_AFTER
] = UNIT_BEFORE
,
1249 [UNIT_REFERENCES
] = UNIT_REFERENCED_BY
,
1250 [UNIT_REFERENCED_BY
] = UNIT_REFERENCES
1252 int r
, q
= 0, v
= 0, w
= 0;
1255 assert(d
>= 0 && d
< _UNIT_DEPENDENCY_MAX
);
1256 assert(inverse_table
[d
] != _UNIT_DEPENDENCY_INVALID
);
1259 /* We won't allow dependencies on ourselves. We will not
1260 * consider them an error however. */
1264 if (UNIT_VTABLE(u
)->no_requires
&&
1265 (d
== UNIT_REQUIRES
||
1266 d
== UNIT_REQUIRES_OVERRIDABLE
||
1267 d
== UNIT_REQUISITE
||
1268 d
== UNIT_REQUISITE_OVERRIDABLE
)) {
1272 if ((r
= set_ensure_allocated(&u
->meta
.dependencies
[d
], trivial_hash_func
, trivial_compare_func
)) < 0 ||
1273 (r
= set_ensure_allocated(&other
->meta
.dependencies
[inverse_table
[d
]], trivial_hash_func
, trivial_compare_func
)) < 0)
1277 if ((r
= set_ensure_allocated(&u
->meta
.dependencies
[UNIT_REFERENCES
], trivial_hash_func
, trivial_compare_func
)) < 0 ||
1278 (r
= set_ensure_allocated(&other
->meta
.dependencies
[UNIT_REFERENCED_BY
], trivial_hash_func
, trivial_compare_func
)) < 0)
1281 if ((q
= set_put(u
->meta
.dependencies
[d
], other
)) < 0)
1284 if ((v
= set_put(other
->meta
.dependencies
[inverse_table
[d
]], u
)) < 0) {
1289 if (add_reference
) {
1290 if ((w
= set_put(u
->meta
.dependencies
[UNIT_REFERENCES
], other
)) < 0) {
1295 if ((r
= set_put(other
->meta
.dependencies
[UNIT_REFERENCED_BY
], u
)) < 0)
1299 unit_add_to_dbus_queue(u
);
1304 set_remove(u
->meta
.dependencies
[d
], other
);
1307 set_remove(other
->meta
.dependencies
[inverse_table
[d
]], u
);
1310 set_remove(u
->meta
.dependencies
[UNIT_REFERENCES
], other
);
1315 static const char *resolve_template(Unit
*u
, const char *name
, const char*path
, char **p
) {
1319 assert(name
|| path
);
1322 name
= file_name_from_path(path
);
1324 if (!unit_name_is_template(name
)) {
1329 if (u
->meta
.instance
)
1330 s
= unit_name_replace_instance(name
, u
->meta
.instance
);
1334 if (!(i
= unit_name_to_prefix(u
->meta
.id
)))
1337 s
= unit_name_replace_instance(name
, i
);
1348 int unit_add_dependency_by_name(Unit
*u
, UnitDependency d
, const char *name
, const char *path
, bool add_reference
) {
1354 assert(name
|| path
);
1356 if (!(name
= resolve_template(u
, name
, path
, &s
)))
1359 if ((r
= manager_load_unit(u
->meta
.manager
, name
, path
, &other
)) < 0)
1362 r
= unit_add_dependency(u
, d
, other
, add_reference
);
1369 int unit_add_dependency_by_name_inverse(Unit
*u
, UnitDependency d
, const char *name
, const char *path
, bool add_reference
) {
1375 assert(name
|| path
);
1377 if (!(name
= resolve_template(u
, name
, path
, &s
)))
1380 if ((r
= manager_load_unit(u
->meta
.manager
, name
, path
, &other
)) < 0)
1383 r
= unit_add_dependency(other
, d
, u
, add_reference
);
1390 int set_unit_path(const char *p
) {
1394 /* This is mostly for debug purposes */
1396 if (path_is_absolute(p
)) {
1397 if (!(c
= strdup(p
)))
1400 if (!(cwd
= get_current_dir_name()))
1403 r
= asprintf(&c
, "%s/%s", cwd
, p
);
1410 if (setenv("SYSTEMD_UNIT_PATH", c
, 0) < 0) {
1419 char *unit_dbus_path(Unit
*u
) {
1424 if (!(e
= bus_path_escape(u
->meta
.id
)))
1427 if (asprintf(&p
, "/org/freedesktop/systemd1/unit/%s", e
) < 0) {
1436 int unit_add_cgroup(Unit
*u
, CGroupBonding
*b
) {
1444 /* Ensure this hasn't been added yet */
1447 l
= hashmap_get(u
->meta
.manager
->cgroup_bondings
, b
->path
);
1448 LIST_PREPEND(CGroupBonding
, by_path
, l
, b
);
1450 if ((r
= hashmap_replace(u
->meta
.manager
->cgroup_bondings
, b
->path
, l
)) < 0) {
1451 LIST_REMOVE(CGroupBonding
, by_path
, l
, b
);
1455 LIST_PREPEND(CGroupBonding
, by_unit
, u
->meta
.cgroup_bondings
, b
);
1461 static char *default_cgroup_path(Unit
*u
) {
1467 if (u
->meta
.instance
) {
1470 if (!(t
= unit_name_template(u
->meta
.id
)))
1473 r
= asprintf(&p
, "%s/%s/%s", u
->meta
.manager
->cgroup_hierarchy
, t
, u
->meta
.instance
);
1476 r
= asprintf(&p
, "%s/%s", u
->meta
.manager
->cgroup_hierarchy
, u
->meta
.id
);
1478 return r
< 0 ? NULL
: p
;
1481 int unit_add_cgroup_from_text(Unit
*u
, const char *name
) {
1483 char *controller
= NULL
, *path
= NULL
;
1484 CGroupBonding
*b
= NULL
;
1490 /* Detect controller name */
1491 n
= strcspn(name
, ":");
1494 (name
[n
] == ':' && name
[n
+1] == 0)) {
1496 /* Only controller name, no path? */
1498 if (!(path
= default_cgroup_path(u
)))
1504 /* Controller name, and path. */
1507 if (!path_is_absolute(p
))
1510 if (!(path
= strdup(p
)))
1515 controller
= strndup(name
, n
);
1517 controller
= strdup(u
->meta
.manager
->cgroup_controller
);
1524 if (cgroup_bonding_find_list(u
->meta
.cgroup_bondings
, controller
)) {
1529 if (!(b
= new0(CGroupBonding
, 1))) {
1534 b
->controller
= controller
;
1537 b
->clean_up
= false;
1539 if ((r
= unit_add_cgroup(u
, b
)) < 0)
1552 int unit_add_default_cgroup(Unit
*u
) {
1558 /* Adds in the default cgroup data, if it wasn't specified yet */
1560 if (unit_get_default_cgroup(u
))
1563 if (!(b
= new0(CGroupBonding
, 1)))
1566 if (!(b
->controller
= strdup(u
->meta
.manager
->cgroup_controller
)))
1569 if (!(b
->path
= default_cgroup_path(u
)))
1575 if ((r
= unit_add_cgroup(u
, b
)) < 0)
1582 free(b
->controller
);
1588 CGroupBonding
* unit_get_default_cgroup(Unit
*u
) {
1591 return cgroup_bonding_find_list(u
->meta
.cgroup_bondings
, u
->meta
.manager
->cgroup_controller
);
1594 int unit_load_related_unit(Unit
*u
, const char *type
, Unit
**_found
) {
1602 if (!(t
= unit_name_change_suffix(u
->meta
.id
, type
)))
1605 assert(!unit_has_name(u
, t
));
1607 r
= manager_load_unit(u
->meta
.manager
, t
, NULL
, _found
);
1610 assert(r
< 0 || *_found
!= u
);
1615 int unit_get_related_unit(Unit
*u
, const char *type
, Unit
**_found
) {
1623 if (!(t
= unit_name_change_suffix(u
->meta
.id
, type
)))
1626 assert(!unit_has_name(u
, t
));
1628 found
= manager_get_unit(u
->meta
.manager
, t
);
1638 static char *specifier_prefix_and_instance(char specifier
, void *data
, void *userdata
) {
1642 return unit_name_to_prefix_and_instance(u
->meta
.id
);
1645 static char *specifier_prefix(char specifier
, void *data
, void *userdata
) {
1649 return unit_name_to_prefix(u
->meta
.id
);
1652 static char *specifier_prefix_unescaped(char specifier
, void *data
, void *userdata
) {
1658 if (!(p
= unit_name_to_prefix(u
->meta
.id
)))
1661 r
= unit_name_unescape(p
);
1667 static char *specifier_instance_unescaped(char specifier
, void *data
, void *userdata
) {
1671 if (u
->meta
.instance
)
1672 return unit_name_unescape(u
->meta
.instance
);
1677 char *unit_name_printf(Unit
*u
, const char* format
) {
1680 * This will use the passed string as format string and
1681 * replace the following specifiers:
1683 * %n: the full id of the unit (foo@bar.waldo)
1684 * %N: the id of the unit without the suffix (foo@bar)
1685 * %p: the prefix (foo)
1686 * %i: the instance (bar)
1689 const Specifier table
[] = {
1690 { 'n', specifier_string
, u
->meta
.id
},
1691 { 'N', specifier_prefix_and_instance
, NULL
},
1692 { 'p', specifier_prefix
, NULL
},
1693 { 'i', specifier_string
, u
->meta
.instance
},
1700 return specifier_printf(format
, table
, u
);
1703 char *unit_full_printf(Unit
*u
, const char *format
) {
1705 /* This is similar to unit_name_printf() but also supports
1708 const Specifier table
[] = {
1709 { 'n', specifier_string
, u
->meta
.id
},
1710 { 'N', specifier_prefix_and_instance
, NULL
},
1711 { 'p', specifier_prefix
, NULL
},
1712 { 'P', specifier_prefix_unescaped
, NULL
},
1713 { 'i', specifier_string
, u
->meta
.instance
},
1714 { 'I', specifier_instance_unescaped
, NULL
},
1721 return specifier_printf(format
, table
, u
);
1724 char **unit_full_printf_strv(Unit
*u
, char **l
) {
1728 /* Applies unit_full_printf to every entry in l */
1733 if (!(r
= new(char*, n
+1)))
1736 for (i
= l
, j
= r
; *i
; i
++, j
++)
1737 if (!(*j
= unit_full_printf(u
, *i
)))
1753 int unit_watch_bus_name(Unit
*u
, const char *name
) {
1757 /* Watch a specific name on the bus. We only support one unit
1758 * watching each name for now. */
1760 return hashmap_put(u
->meta
.manager
->watch_bus
, name
, u
);
1763 void unit_unwatch_bus_name(Unit
*u
, const char *name
) {
1767 hashmap_remove_value(u
->meta
.manager
->watch_bus
, name
, u
);
1770 bool unit_can_serialize(Unit
*u
) {
1773 return UNIT_VTABLE(u
)->serialize
&& UNIT_VTABLE(u
)->deserialize_item
;
1776 int unit_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1783 if (!unit_can_serialize(u
))
1786 if ((r
= UNIT_VTABLE(u
)->serialize(u
, f
, fds
)) < 0)
1790 unit_serialize_item(u
, f
, "job", job_type_to_string(u
->meta
.job
->type
));
1797 void unit_serialize_item_format(Unit
*u
, FILE *f
, const char *key
, const char *format
, ...) {
1808 va_start(ap
, format
);
1809 vfprintf(f
, format
, ap
);
1815 void unit_serialize_item(Unit
*u
, FILE *f
, const char *key
, const char *value
) {
1821 fprintf(f
, "%s=%s\n", key
, value
);
1824 int unit_deserialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1831 if (!unit_can_serialize(u
))
1835 char line
[1024], *l
, *v
;
1838 if (!fgets(line
, sizeof(line
), f
)) {
1850 k
= strcspn(l
, "=");
1858 if (streq(l
, "job")) {
1861 if ((type
= job_type_from_string(v
)) < 0)
1862 log_debug("Failed to parse job type value %s", v
);
1864 u
->meta
.deserialized_job
= type
;
1869 if ((r
= UNIT_VTABLE(u
)->deserialize_item(u
, l
, v
, fds
)) < 0)
1874 int unit_add_node_link(Unit
*u
, const char *what
, bool wants
) {
1884 /* Adds in links to the device node that this unit is based on */
1886 if (!is_device_path(what
))
1889 if (!(e
= unit_name_build_escape(what
+1, NULL
, ".device")))
1892 r
= manager_load_unit(u
->meta
.manager
, e
, NULL
, &device
);
1898 if ((r
= unit_add_dependency(u
, UNIT_AFTER
, device
, true)) < 0)
1901 if ((r
= unit_add_dependency(u
, UNIT_REQUIRES
, device
, true)) < 0)
1905 if ((r
= unit_add_dependency(device
, UNIT_WANTS
, u
, false)) < 0)
1911 int unit_coldplug(Unit
*u
) {
1916 if (UNIT_VTABLE(u
)->coldplug
)
1917 if ((r
= UNIT_VTABLE(u
)->coldplug(u
)) < 0)
1920 if (u
->meta
.deserialized_job
>= 0) {
1921 if ((r
= manager_add_job(u
->meta
.manager
, u
->meta
.deserialized_job
, u
, JOB_FAIL
, false, NULL
)) < 0)
1924 u
->meta
.deserialized_job
= _JOB_TYPE_INVALID
;
1930 static const char* const unit_type_table
[_UNIT_TYPE_MAX
] = {
1931 [UNIT_SERVICE
] = "service",
1932 [UNIT_TIMER
] = "timer",
1933 [UNIT_SOCKET
] = "socket",
1934 [UNIT_TARGET
] = "target",
1935 [UNIT_DEVICE
] = "device",
1936 [UNIT_MOUNT
] = "mount",
1937 [UNIT_AUTOMOUNT
] = "automount",
1938 [UNIT_SNAPSHOT
] = "snapshot",
1939 [UNIT_SWAP
] = "swap"
1942 DEFINE_STRING_TABLE_LOOKUP(unit_type
, UnitType
);
1944 static const char* const unit_load_state_table
[_UNIT_LOAD_STATE_MAX
] = {
1945 [UNIT_STUB
] = "stub",
1946 [UNIT_LOADED
] = "loaded",
1947 [UNIT_FAILED
] = "failed",
1948 [UNIT_MERGED
] = "merged"
1951 DEFINE_STRING_TABLE_LOOKUP(unit_load_state
, UnitLoadState
);
1953 static const char* const unit_active_state_table
[_UNIT_ACTIVE_STATE_MAX
] = {
1954 [UNIT_ACTIVE
] = "active",
1955 [UNIT_INACTIVE
] = "inactive",
1956 [UNIT_ACTIVATING
] = "activating",
1957 [UNIT_DEACTIVATING
] = "deactivating"
1960 DEFINE_STRING_TABLE_LOOKUP(unit_active_state
, UnitActiveState
);
1962 static const char* const unit_dependency_table
[_UNIT_DEPENDENCY_MAX
] = {
1963 [UNIT_REQUIRES
] = "Requires",
1964 [UNIT_REQUIRES_OVERRIDABLE
] = "RequiresOverridable",
1965 [UNIT_WANTS
] = "Wants",
1966 [UNIT_REQUISITE
] = "Requisite",
1967 [UNIT_REQUISITE_OVERRIDABLE
] = "RequisiteOverridable",
1968 [UNIT_REQUIRED_BY
] = "RequiredBy",
1969 [UNIT_REQUIRED_BY_OVERRIDABLE
] = "RequiredByOverridable",
1970 [UNIT_WANTED_BY
] = "WantedBy",
1971 [UNIT_CONFLICTS
] = "Conflicts",
1972 [UNIT_BEFORE
] = "Before",
1973 [UNIT_AFTER
] = "After",
1974 [UNIT_REFERENCES
] = "References",
1975 [UNIT_REFERENCED_BY
] = "ReferencedBy"
1978 DEFINE_STRING_TABLE_LOOKUP(unit_dependency
, UnitDependency
);
1980 static const char* const kill_mode_table
[_KILL_MODE_MAX
] = {
1981 [KILL_CONTROL_GROUP
] = "control-group",
1982 [KILL_PROCESS_GROUP
] = "process-group",
1983 [KILL_PROCESS
] = "process",
1984 [KILL_NONE
] = "none"
1987 DEFINE_STRING_TABLE_LOOKUP(kill_mode
, KillMode
);