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>
27 #include <sys/signalfd.h>
32 #include <sys/reboot.h>
33 #include <sys/ioctl.h>
35 #include <libcgroup.h>
38 #include <sys/types.h>
47 #include "ratelimit.h"
49 #include "mount-setup.h"
50 #include "utmp-wtmp.h"
51 #include "unit-name.h"
52 #include "dbus-unit.h"
56 /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
57 #define GC_QUEUE_ENTRIES_MAX 16
59 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
60 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
62 static int enable_special_signals(Manager *m) {
67 /* Enable that we get SIGINT on control-alt-del */
68 if (reboot(RB_DISABLE_CAD) < 0)
69 log_warning("Failed to enable ctrl-alt-del handling: %m");
71 if ((fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY)) < 0)
72 log_warning("Failed to open /dev/tty0: %m");
74 /* Enable that we get SIGWINCH on kbrequest */
75 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
76 log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
78 close_nointr_nofail(fd);
84 static int manager_setup_signals(Manager *m) {
86 struct epoll_event ev;
91 /* We are not interested in SIGSTOP and friends. */
93 sa.sa_handler = SIG_DFL;
94 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
95 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
97 assert_se(sigemptyset(&mask) == 0);
98 assert_se(sigaddset(&mask, SIGCHLD) == 0);
99 assert_se(sigaddset(&mask, SIGTERM) == 0);
100 assert_se(sigaddset(&mask, SIGHUP) == 0);
101 assert_se(sigaddset(&mask, SIGUSR1) == 0);
102 assert_se(sigaddset(&mask, SIGUSR2) == 0);
103 assert_se(sigaddset(&mask, SIGINT) == 0); /* Kernel sends us this on control-alt-del */
104 assert_se(sigaddset(&mask, SIGWINCH) == 0); /* Kernel sends us this on kbrequest (alt-arrowup) */
105 assert_se(sigaddset(&mask, SIGPWR) == 0); /* Some kernel drivers and upsd send us this on power failure */
106 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
108 m->signal_watch.type = WATCH_SIGNAL;
109 if ((m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0)
114 ev.data.ptr = &m->signal_watch;
116 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
119 if (m->running_as == MANAGER_INIT)
120 return enable_special_signals(m);
125 static char** session_dirs(void) {
126 const char *home, *e;
127 char *config_home = NULL, *data_home = NULL;
128 char **config_dirs = NULL, **data_dirs = NULL;
129 char **r = NULL, **t;
131 /* Implement the mechanisms defined in
133 * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
135 * We look in both the config and the data dirs because we
136 * want to encourage that distributors ship their unit files
137 * as data, and allow overriding as configuration.
140 home = getenv("HOME");
142 if ((e = getenv("XDG_CONFIG_HOME"))) {
143 if (asprintf(&config_home, "%s/systemd/session", e) < 0)
147 if (asprintf(&config_home, "%s/.config/systemd/session", home) < 0)
151 if ((e = getenv("XDG_CONFIG_DIRS")))
152 if (!(config_dirs = strv_split(e, ":")))
155 /* We don't treat /etc/xdg/systemd here as the spec
156 * suggests because we assume that that is a link to
157 * /etc/systemd/ anyway. */
159 if ((e = getenv("XDG_DATA_HOME"))) {
160 if (asprintf(&data_home, "%s/systemd/session", e) < 0)
164 if (asprintf(&data_home, "%s/.local/share/systemd/session", home) < 0)
168 if ((e = getenv("XDG_DATA_DIRS")))
169 data_dirs = strv_split(e, ":");
171 data_dirs = strv_new("/usr/local/share", "/usr/share", NULL);
176 /* Now merge everything we found. */
178 if (!(t = strv_append(r, config_home)))
184 if (!(t = strv_merge_concat(r, config_dirs, "/systemd/session")))
189 if (!(t = strv_append(r, SESSION_CONFIG_UNIT_PATH)))
195 if (!(t = strv_append(r, data_home)))
201 if (!(t = strv_merge_concat(r, data_dirs, "/systemd/session")))
206 if (!(t = strv_append(r, SESSION_DATA_UNIT_PATH)))
211 if (!strv_path_make_absolute_cwd(r))
216 strv_free(config_dirs);
218 strv_free(data_dirs);
228 static int manager_find_paths(Manager *m) {
234 /* First priority is whatever has been passed to us via env
236 if ((e = getenv("SYSTEMD_UNIT_PATH")))
237 if (!(m->unit_path = split_path_and_make_absolute(e)))
240 if (strv_isempty(m->unit_path)) {
242 /* Nothing is set, so let's figure something out. */
243 strv_free(m->unit_path);
245 if (m->running_as == MANAGER_SESSION) {
246 if (!(m->unit_path = session_dirs()))
249 if (!(m->unit_path = strv_new(
250 SYSTEM_CONFIG_UNIT_PATH, /* /etc/systemd/system/ */
251 SYSTEM_DATA_UNIT_PATH, /* /lib/systemd/system/ */
256 if (m->running_as == MANAGER_INIT) {
257 /* /etc/init.d/ compatibility does not matter to users */
259 if ((e = getenv("SYSTEMD_SYSVINIT_PATH")))
260 if (!(m->sysvinit_path = split_path_and_make_absolute(e)))
263 if (strv_isempty(m->sysvinit_path)) {
264 strv_free(m->sysvinit_path);
266 if (!(m->sysvinit_path = strv_new(
267 SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */
272 if ((e = getenv("SYSTEMD_SYSVRCND_PATH")))
273 if (!(m->sysvrcnd_path = split_path_and_make_absolute(e)))
276 if (strv_isempty(m->sysvrcnd_path)) {
277 strv_free(m->sysvrcnd_path);
279 if (!(m->sysvrcnd_path = strv_new(
280 SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */
286 strv_uniq(m->unit_path);
287 strv_uniq(m->sysvinit_path);
288 strv_uniq(m->sysvrcnd_path);
290 assert(!strv_isempty(m->unit_path));
291 if (!(t = strv_join(m->unit_path, "\n\t")))
293 log_debug("Looking for unit files in:\n\t%s", t);
296 if (!strv_isempty(m->sysvinit_path)) {
298 if (!(t = strv_join(m->sysvinit_path, "\n\t")))
301 log_debug("Looking for SysV init scripts in:\n\t%s", t);
304 log_debug("Ignoring SysV init scripts.");
306 if (!strv_isempty(m->sysvrcnd_path)) {
308 if (!(t = strv_join(m->sysvrcnd_path, "\n\t")))
311 log_debug("Looking for SysV rcN.d links in:\n\t%s", t);
314 log_debug("Ignoring SysV rcN.d links.");
319 int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **_m) {
324 assert(running_as >= 0);
325 assert(running_as < _MANAGER_RUNNING_AS_MAX);
327 if (!(m = new0(Manager, 1)))
330 m->boot_timestamp = now(CLOCK_REALTIME);
332 m->running_as = running_as;
333 m->confirm_spawn = confirm_spawn;
334 m->name_data_slot = -1;
335 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
337 m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = m->dev_autofs_fd = -1;
338 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
340 if (!(m->environment = strv_copy(environ)))
343 if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
346 if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
349 if (!(m->transaction_jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
352 if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
355 if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
358 if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
361 if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
364 if ((r = manager_find_paths(m)) < 0)
367 if ((r = manager_setup_signals(m)) < 0)
370 if ((r = manager_setup_cgroup(m)) < 0)
373 /* Try to connect to the busses, if possible. */
374 if ((r = bus_init_system(m)) < 0 ||
375 (r = bus_init_api(m)) < 0)
386 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
392 while ((meta = m->cleanup_queue)) {
393 assert(meta->in_cleanup_queue);
395 unit_free(UNIT(meta));
403 GC_OFFSET_IN_PATH, /* This one is on the path we were travelling */
404 GC_OFFSET_UNSURE, /* No clue */
405 GC_OFFSET_GOOD, /* We still need this unit */
406 GC_OFFSET_BAD, /* We don't need this unit anymore */
410 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
417 if (u->meta.gc_marker == gc_marker + GC_OFFSET_GOOD ||
418 u->meta.gc_marker == gc_marker + GC_OFFSET_BAD ||
419 u->meta.gc_marker == gc_marker + GC_OFFSET_IN_PATH)
422 if (u->meta.in_cleanup_queue)
425 if (unit_check_gc(u))
428 u->meta.gc_marker = gc_marker + GC_OFFSET_IN_PATH;
432 SET_FOREACH(other, u->meta.dependencies[UNIT_REFERENCED_BY], i) {
433 unit_gc_sweep(other, gc_marker);
435 if (other->meta.gc_marker == gc_marker + GC_OFFSET_GOOD)
438 if (other->meta.gc_marker != gc_marker + GC_OFFSET_BAD)
445 /* We were unable to find anything out about this entry, so
446 * let's investigate it later */
447 u->meta.gc_marker = gc_marker + GC_OFFSET_UNSURE;
448 unit_add_to_gc_queue(u);
452 /* We definitely know that this one is not useful anymore, so
453 * let's mark it for deletion */
454 u->meta.gc_marker = gc_marker + GC_OFFSET_BAD;
455 unit_add_to_cleanup_queue(u);
459 u->meta.gc_marker = gc_marker + GC_OFFSET_GOOD;
462 static unsigned manager_dispatch_gc_queue(Manager *m) {
469 if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
470 (m->gc_queue_timestamp <= 0 ||
471 (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
474 log_debug("Running GC...");
476 m->gc_marker += _GC_OFFSET_MAX;
477 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
480 gc_marker = m->gc_marker;
482 while ((meta = m->gc_queue)) {
483 assert(meta->in_gc_queue);
485 unit_gc_sweep(UNIT(meta), gc_marker);
487 LIST_REMOVE(Meta, gc_queue, m->gc_queue, meta);
488 meta->in_gc_queue = false;
492 if (meta->gc_marker == gc_marker + GC_OFFSET_BAD ||
493 meta->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
494 log_debug("Collecting %s", meta->id);
495 meta->gc_marker = gc_marker + GC_OFFSET_BAD;
496 unit_add_to_cleanup_queue(UNIT(meta));
500 m->n_in_gc_queue = 0;
501 m->gc_queue_timestamp = 0;
506 static void manager_clear_jobs_and_units(Manager *m) {
512 while ((j = hashmap_first(m->transaction_jobs)))
515 while ((u = hashmap_first(m->units)))
519 void manager_free(Manager *m) {
524 manager_dispatch_cleanup_queue(m);
525 manager_clear_jobs_and_units(m);
527 for (c = 0; c < _UNIT_TYPE_MAX; c++)
528 if (unit_vtable[c]->shutdown)
529 unit_vtable[c]->shutdown(m);
531 /* If we reexecute ourselves, we keep the root cgroup
533 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
538 hashmap_free(m->units);
539 hashmap_free(m->jobs);
540 hashmap_free(m->transaction_jobs);
541 hashmap_free(m->watch_pids);
542 hashmap_free(m->watch_bus);
544 if (m->epoll_fd >= 0)
545 close_nointr_nofail(m->epoll_fd);
546 if (m->signal_watch.fd >= 0)
547 close_nointr_nofail(m->signal_watch.fd);
549 strv_free(m->unit_path);
550 strv_free(m->sysvinit_path);
551 strv_free(m->sysvrcnd_path);
552 strv_free(m->environment);
554 free(m->cgroup_controller);
555 free(m->cgroup_hierarchy);
557 hashmap_free(m->cgroup_bondings);
562 int manager_enumerate(Manager *m) {
568 /* Let's ask every type to load all units from disk/kernel
569 * that it might know */
570 for (c = 0; c < _UNIT_TYPE_MAX; c++)
571 if (unit_vtable[c]->enumerate)
572 if ((q = unit_vtable[c]->enumerate(m)) < 0)
575 manager_dispatch_load_queue(m);
579 int manager_coldplug(Manager *m) {
587 /* Then, let's set up their initial state. */
588 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
594 if (UNIT_VTABLE(u)->coldplug)
595 if ((q = UNIT_VTABLE(u)->coldplug(u)) < 0)
602 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
607 /* First, enumerate what we can from all config files */
608 r = manager_enumerate(m);
610 /* Second, deserialize if there is something to deserialize */
612 if ((q = manager_deserialize(m, serialization, fds)) < 0)
615 /* Third, fire things up! */
616 if ((q = manager_coldplug(m)) < 0)
619 /* Now that the initial devices are available, let's see if we
620 * can write the utmp file */
621 manager_write_utmp_reboot(m);
626 static void transaction_delete_job(Manager *m, Job *j, bool delete_dependencies) {
630 /* Deletes one job from the transaction */
632 manager_transaction_unlink_job(m, j, delete_dependencies);
638 static void transaction_delete_unit(Manager *m, Unit *u) {
641 /* Deletes all jobs associated with a certain unit from the
644 while ((j = hashmap_get(m->transaction_jobs, u)))
645 transaction_delete_job(m, j, true);
648 static void transaction_clean_dependencies(Manager *m) {
654 /* Drops all dependencies of all installed jobs */
656 HASHMAP_FOREACH(j, m->jobs, i) {
657 while (j->subject_list)
658 job_dependency_free(j->subject_list);
659 while (j->object_list)
660 job_dependency_free(j->object_list);
663 assert(!m->transaction_anchor);
666 static void transaction_abort(Manager *m) {
671 while ((j = hashmap_first(m->transaction_jobs)))
673 transaction_delete_job(m, j, true);
677 assert(hashmap_isempty(m->transaction_jobs));
679 transaction_clean_dependencies(m);
682 static void transaction_find_jobs_that_matter_to_anchor(Manager *m, Job *j, unsigned generation) {
687 /* A recursive sweep through the graph that marks all units
688 * that matter to the anchor job, i.e. are directly or
689 * indirectly a dependency of the anchor job via paths that
690 * are fully marked as mattering. */
695 l = m->transaction_anchor;
697 LIST_FOREACH(subject, l, l) {
699 /* This link does not matter */
703 /* This unit has already been marked */
704 if (l->object->generation == generation)
707 l->object->matters_to_anchor = true;
708 l->object->generation = generation;
710 transaction_find_jobs_that_matter_to_anchor(m, l->object, generation);
714 static void transaction_merge_and_delete_job(Manager *m, Job *j, Job *other, JobType t) {
715 JobDependency *l, *last;
719 assert(j->unit == other->unit);
720 assert(!j->installed);
722 /* Merges 'other' into 'j' and then deletes j. */
725 j->state = JOB_WAITING;
726 j->override = j->override || other->override;
728 j->matters_to_anchor = j->matters_to_anchor || other->matters_to_anchor;
730 /* Patch us in as new owner of the JobDependency objects */
732 LIST_FOREACH(subject, l, other->subject_list) {
733 assert(l->subject == other);
738 /* Merge both lists */
740 last->subject_next = j->subject_list;
742 j->subject_list->subject_prev = last;
743 j->subject_list = other->subject_list;
746 /* Patch us in as new owner of the JobDependency objects */
748 LIST_FOREACH(object, l, other->object_list) {
749 assert(l->object == other);
754 /* Merge both lists */
756 last->object_next = j->object_list;
758 j->object_list->object_prev = last;
759 j->object_list = other->object_list;
762 /* Kill the other job */
763 other->subject_list = NULL;
764 other->object_list = NULL;
765 transaction_delete_job(m, other, true);
768 static int delete_one_unmergeable_job(Manager *m, Job *j) {
773 /* Tries to delete one item in the linked list
774 * j->transaction_next->transaction_next->... that conflicts
775 * whith another one, in an attempt to make an inconsistent
776 * transaction work. */
778 /* We rely here on the fact that if a merged with b does not
779 * merge with c, either a or b merge with c neither */
780 LIST_FOREACH(transaction, j, j)
781 LIST_FOREACH(transaction, k, j->transaction_next) {
784 /* Is this one mergeable? Then skip it */
785 if (job_type_is_mergeable(j->type, k->type))
788 /* Ok, we found two that conflict, let's see if we can
789 * drop one of them */
790 if (!j->matters_to_anchor)
792 else if (!k->matters_to_anchor)
797 /* Ok, we can drop one, so let's do so. */
798 log_debug("Trying to fix job merging by deleting job %s/%s", d->unit->meta.id, job_type_to_string(d->type));
799 transaction_delete_job(m, d, true);
806 static int transaction_merge_jobs(Manager *m) {
813 /* First step, check whether any of the jobs for one specific
814 * task conflict. If so, try to drop one of them. */
815 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
820 LIST_FOREACH(transaction, k, j->transaction_next) {
821 if ((r = job_type_merge(&t, k->type)) >= 0)
824 /* OK, we could not merge all jobs for this
825 * action. Let's see if we can get rid of one
828 if ((r = delete_one_unmergeable_job(m, j)) >= 0)
829 /* Ok, we managed to drop one, now
830 * let's ask our callers to call us
831 * again after garbage collecting */
834 /* We couldn't merge anything. Failure */
839 /* Second step, merge the jobs. */
840 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
844 /* Merge all transactions */
845 LIST_FOREACH(transaction, k, j->transaction_next)
846 assert_se(job_type_merge(&t, k->type) == 0);
848 /* If an active job is mergeable, merge it too */
849 if (j->unit->meta.job)
850 job_type_merge(&t, j->unit->meta.job->type); /* Might fail. Which is OK */
852 while ((k = j->transaction_next)) {
854 transaction_merge_and_delete_job(m, k, j, t);
857 transaction_merge_and_delete_job(m, j, k, t);
860 assert(!j->transaction_next);
861 assert(!j->transaction_prev);
867 static void transaction_drop_redundant(Manager *m) {
872 /* Goes through the transaction and removes all jobs that are
881 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
882 bool changes_something = false;
885 LIST_FOREACH(transaction, k, j) {
887 if (!job_is_anchor(k) &&
888 job_type_is_redundant(k->type, unit_active_state(k->unit)))
891 changes_something = true;
895 if (changes_something)
898 log_debug("Found redundant job %s/%s, dropping.", j->unit->meta.id, job_type_to_string(j->type));
899 transaction_delete_job(m, j, false);
907 static bool unit_matters_to_anchor(Unit *u, Job *j) {
909 assert(!j->transaction_prev);
911 /* Checks whether at least one of the jobs for this unit
912 * matters to the anchor. */
914 LIST_FOREACH(transaction, j, j)
915 if (j->matters_to_anchor)
921 static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation) {
928 assert(!j->transaction_prev);
930 /* Does a recursive sweep through the ordering graph, looking
931 * for a cycle. If we find cycle we try to break it. */
933 /* Did we find a cycle? */
934 if (j->marker && j->generation == generation) {
937 /* So, we already have been here. We have a
938 * cycle. Let's try to break it. We go backwards in
939 * our path and try to find a suitable job to
940 * remove. We use the marker to find our way back,
941 * since smart how we are we stored our way back in
944 log_debug("Found ordering cycle on %s/%s", j->unit->meta.id, job_type_to_string(j->type));
946 for (k = from; k; k = (k->generation == generation ? k->marker : NULL)) {
948 log_debug("Walked on cycle path to %s/%s", k->unit->meta.id, job_type_to_string(k->type));
951 !unit_matters_to_anchor(k->unit, k)) {
952 /* Ok, we can drop this one, so let's
954 log_debug("Breaking order cycle by deleting job %s/%s", k->unit->meta.id, job_type_to_string(k->type));
955 transaction_delete_unit(m, k->unit);
959 /* Check if this in fact was the beginning of
965 log_debug("Unable to break cycle");
970 /* Make the marker point to where we come from, so that we can
971 * find our way backwards if we want to break a cycle */
973 j->generation = generation;
975 /* We assume that the the dependencies are bidirectional, and
976 * hence can ignore UNIT_AFTER */
977 SET_FOREACH(u, j->unit->meta.dependencies[UNIT_BEFORE], i) {
980 /* Is there a job for this unit? */
981 if (!(o = hashmap_get(m->transaction_jobs, u)))
983 /* Ok, there is no job for this in the
984 * transaction, but maybe there is already one
986 if (!(o = u->meta.job))
989 if ((r = transaction_verify_order_one(m, o, j, generation)) < 0)
993 /* Ok, let's backtrack, and remember that this entry is not on
994 * our path anymore. */
1000 static int transaction_verify_order(Manager *m, unsigned *generation) {
1008 /* Check if the ordering graph is cyclic. If it is, try to fix
1009 * that up by dropping one of the jobs. */
1011 HASHMAP_FOREACH(j, m->transaction_jobs, i)
1012 if ((r = transaction_verify_order_one(m, j, NULL, (*generation)++)) < 0)
1018 static void transaction_collect_garbage(Manager *m) {
1023 /* Drop jobs that are not required by any other job */
1031 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1035 log_debug("Garbage collecting job %s/%s", j->unit->meta.id, job_type_to_string(j->type));
1036 transaction_delete_job(m, j, true);
1044 static int transaction_is_destructive(Manager *m) {
1050 /* Checks whether applying this transaction means that
1051 * existing jobs would be replaced */
1053 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1056 assert(!j->transaction_prev);
1057 assert(!j->transaction_next);
1059 if (j->unit->meta.job &&
1060 j->unit->meta.job != j &&
1061 !job_type_is_superset(j->type, j->unit->meta.job->type))
1068 static void transaction_minimize_impact(Manager *m) {
1072 /* Drops all unnecessary jobs that reverse already active jobs
1073 * or that stop a running service. */
1081 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1082 LIST_FOREACH(transaction, j, j) {
1083 bool stops_running_service, changes_existing_job;
1085 /* If it matters, we shouldn't drop it */
1086 if (j->matters_to_anchor)
1089 /* Would this stop a running service?
1090 * Would this change an existing job?
1091 * If so, let's drop this entry */
1093 stops_running_service =
1094 j->type == JOB_STOP && UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(j->unit));
1096 changes_existing_job =
1097 j->unit->meta.job && job_type_is_conflicting(j->type, j->unit->meta.job->state);
1099 if (!stops_running_service && !changes_existing_job)
1102 if (stops_running_service)
1103 log_debug("%s/%s would stop a running service.", j->unit->meta.id, job_type_to_string(j->type));
1105 if (changes_existing_job)
1106 log_debug("%s/%s would change existing job.", j->unit->meta.id, job_type_to_string(j->type));
1108 /* Ok, let's get rid of this */
1109 log_debug("Deleting %s/%s to minimize impact.", j->unit->meta.id, job_type_to_string(j->type));
1111 transaction_delete_job(m, j, true);
1123 static int transaction_apply(Manager *m) {
1128 /* Moves the transaction jobs to the set of active jobs */
1130 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1132 assert(!j->transaction_prev);
1133 assert(!j->transaction_next);
1138 if ((r = hashmap_put(m->jobs, UINT32_TO_PTR(j->id), j)) < 0)
1142 while ((j = hashmap_steal_first(m->transaction_jobs))) {
1146 if (j->unit->meta.job)
1147 job_free(j->unit->meta.job);
1149 j->unit->meta.job = j;
1150 j->installed = true;
1152 /* We're fully installed. Now let's free data we don't
1155 assert(!j->transaction_next);
1156 assert(!j->transaction_prev);
1158 job_add_to_run_queue(j);
1159 job_add_to_dbus_queue(j);
1162 /* As last step, kill all remaining job dependencies. */
1163 transaction_clean_dependencies(m);
1169 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1173 hashmap_remove(m->jobs, UINT32_TO_PTR(j->id));
1179 static int transaction_activate(Manager *m, JobMode mode) {
1181 unsigned generation = 1;
1185 /* This applies the changes recorded in transaction_jobs to
1186 * the actual list of jobs, if possible. */
1188 /* First step: figure out which jobs matter */
1189 transaction_find_jobs_that_matter_to_anchor(m, NULL, generation++);
1191 /* Second step: Try not to stop any running services if
1192 * we don't have to. Don't try to reverse running
1193 * jobs if we don't have to. */
1194 transaction_minimize_impact(m);
1196 /* Third step: Drop redundant jobs */
1197 transaction_drop_redundant(m);
1200 /* Fourth step: Let's remove unneeded jobs that might
1202 transaction_collect_garbage(m);
1204 /* Fifth step: verify order makes sense and correct
1205 * cycles if necessary and possible */
1206 if ((r = transaction_verify_order(m, &generation)) >= 0)
1210 log_debug("Requested transaction contains an unfixable cyclic ordering dependency: %s", strerror(-r));
1214 /* Let's see if the resulting transaction ordering
1215 * graph is still cyclic... */
1219 /* Sixth step: let's drop unmergeable entries if
1220 * necessary and possible, merge entries we can
1222 if ((r = transaction_merge_jobs(m)) >= 0)
1226 log_debug("Requested transaction contains unmergable jobs: %s", strerror(-r));
1230 /* Seventh step: an entry got dropped, let's garbage
1231 * collect its dependencies. */
1232 transaction_collect_garbage(m);
1234 /* Let's see if the resulting transaction still has
1235 * unmergeable entries ... */
1238 /* Eights step: Drop redundant jobs again, if the merging now allows us to drop more. */
1239 transaction_drop_redundant(m);
1241 /* Ninth step: check whether we can actually apply this */
1242 if (mode == JOB_FAIL)
1243 if ((r = transaction_is_destructive(m)) < 0) {
1244 log_debug("Requested transaction contradicts existing jobs: %s", strerror(-r));
1248 /* Tenth step: apply changes */
1249 if ((r = transaction_apply(m)) < 0) {
1250 log_debug("Failed to apply transaction: %s", strerror(-r));
1254 assert(hashmap_isempty(m->transaction_jobs));
1255 assert(!m->transaction_anchor);
1260 transaction_abort(m);
1264 static Job* transaction_add_one_job(Manager *m, JobType type, Unit *unit, bool override, bool *is_new) {
1271 /* Looks for an axisting prospective job and returns that. If
1272 * it doesn't exist it is created and added to the prospective
1275 f = hashmap_get(m->transaction_jobs, unit);
1277 LIST_FOREACH(transaction, j, f) {
1278 assert(j->unit == unit);
1280 if (j->type == type) {
1287 if (unit->meta.job && unit->meta.job->type == type)
1289 else if (!(j = job_new(m, type, unit)))
1294 j->matters_to_anchor = false;
1295 j->override = override;
1297 LIST_PREPEND(Job, transaction, f, j);
1299 if ((r = hashmap_replace(m->transaction_jobs, unit, f)) < 0) {
1307 log_debug("Added job %s/%s to transaction.", unit->meta.id, job_type_to_string(type));
1312 void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies) {
1316 if (j->transaction_prev)
1317 j->transaction_prev->transaction_next = j->transaction_next;
1318 else if (j->transaction_next)
1319 hashmap_replace(m->transaction_jobs, j->unit, j->transaction_next);
1321 hashmap_remove_value(m->transaction_jobs, j->unit, j);
1323 if (j->transaction_next)
1324 j->transaction_next->transaction_prev = j->transaction_prev;
1326 j->transaction_prev = j->transaction_next = NULL;
1328 while (j->subject_list)
1329 job_dependency_free(j->subject_list);
1331 while (j->object_list) {
1332 Job *other = j->object_list->matters ? j->object_list->subject : NULL;
1334 job_dependency_free(j->object_list);
1336 if (other && delete_dependencies) {
1337 log_debug("Deleting job %s/%s as dependency of job %s/%s",
1338 other->unit->meta.id, job_type_to_string(other->type),
1339 j->unit->meta.id, job_type_to_string(j->type));
1340 transaction_delete_job(m, other, delete_dependencies);
1345 static int transaction_add_job_and_dependencies(
1360 assert(type < _JOB_TYPE_MAX);
1363 if (unit->meta.load_state != UNIT_LOADED)
1366 if (!unit_job_is_applicable(unit, type))
1369 /* First add the job. */
1370 if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new)))
1373 /* Then, add a link to the job. */
1374 if (!job_dependency_new(by, ret, matters))
1378 /* Finally, recursively add in all dependencies. */
1379 if (type == JOB_START || type == JOB_RELOAD_OR_START) {
1380 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES], i)
1381 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
1384 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
1385 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, NULL)) < 0 && r != -EBADR)
1386 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, strerror(-r));
1388 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_WANTS], i)
1389 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, NULL)) < 0)
1390 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, strerror(-r));
1392 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE], i)
1393 if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
1396 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
1397 if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, NULL)) < 0 && r != -EBADR)
1398 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, strerror(-r));
1400 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTS], i)
1401 if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
1404 } else if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
1406 SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRED_BY], i)
1407 if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
1411 /* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */
1423 static int transaction_add_isolate_jobs(Manager *m) {
1431 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1433 /* ignore aliases */
1434 if (u->meta.id != k)
1437 if (UNIT_VTABLE(u)->no_isolate)
1440 /* No need to stop inactive jobs */
1441 if (unit_active_state(u) == UNIT_INACTIVE)
1444 /* Is there already something listed for this? */
1445 if (hashmap_get(m->transaction_jobs, u))
1448 if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, NULL)) < 0)
1449 log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->meta.id, strerror(-r));
1455 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, Job **_ret) {
1460 assert(type < _JOB_TYPE_MAX);
1462 assert(mode < _JOB_MODE_MAX);
1464 if (mode == JOB_ISOLATE && type != JOB_START)
1467 log_debug("Trying to enqueue job %s/%s", unit->meta.id, job_type_to_string(type));
1469 if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, &ret)) < 0) {
1470 transaction_abort(m);
1474 if (mode == JOB_ISOLATE)
1475 if ((r = transaction_add_isolate_jobs(m)) < 0) {
1476 transaction_abort(m);
1480 if ((r = transaction_activate(m, mode)) < 0)
1483 log_debug("Enqueued job %s/%s as %u", unit->meta.id, job_type_to_string(type), (unsigned) ret->id);
1491 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, Job **_ret) {
1496 assert(type < _JOB_TYPE_MAX);
1498 assert(mode < _JOB_MODE_MAX);
1500 if ((r = manager_load_unit(m, name, NULL, &unit)) < 0)
1503 return manager_add_job(m, type, unit, mode, override, _ret);
1506 Job *manager_get_job(Manager *m, uint32_t id) {
1509 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1512 Unit *manager_get_unit(Manager *m, const char *name) {
1516 return hashmap_get(m->units, name);
1519 unsigned manager_dispatch_load_queue(Manager *m) {
1525 /* Make sure we are not run recursively */
1526 if (m->dispatching_load_queue)
1529 m->dispatching_load_queue = true;
1531 /* Dispatches the load queue. Takes a unit from the queue and
1532 * tries to load its data until the queue is empty */
1534 while ((meta = m->load_queue)) {
1535 assert(meta->in_load_queue);
1537 unit_load(UNIT(meta));
1541 m->dispatching_load_queue = false;
1545 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, Unit **_ret) {
1550 assert(name || path);
1552 /* This will prepare the unit for loading, but not actually
1553 * load anything from disk. */
1555 if (path && !is_path(path))
1559 name = file_name_from_path(path);
1561 if (!unit_name_is_valid(name))
1564 if ((ret = manager_get_unit(m, name))) {
1569 if (!(ret = unit_new(m)))
1573 if (!(ret->meta.fragment_path = strdup(path))) {
1578 if ((r = unit_add_name(ret, name)) < 0) {
1583 unit_add_to_load_queue(ret);
1584 unit_add_to_dbus_queue(ret);
1585 unit_add_to_gc_queue(ret);
1593 int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret) {
1598 /* This will load the service information files, but not actually
1599 * start any services or anything. */
1601 if ((r = manager_load_unit_prepare(m, name, path, _ret)) != 0)
1604 manager_dispatch_load_queue(m);
1607 *_ret = unit_follow_merge(*_ret);
1612 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1619 HASHMAP_FOREACH(j, s->jobs, i)
1620 job_dump(j, f, prefix);
1623 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1631 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1632 if (u->meta.id == t)
1633 unit_dump(u, f, prefix);
1636 void manager_clear_jobs(Manager *m) {
1641 transaction_abort(m);
1643 while ((j = hashmap_first(m->jobs)))
1647 unsigned manager_dispatch_run_queue(Manager *m) {
1651 if (m->dispatching_run_queue)
1654 m->dispatching_run_queue = true;
1656 while ((j = m->run_queue)) {
1657 assert(j->installed);
1658 assert(j->in_run_queue);
1660 job_run_and_invalidate(j);
1664 m->dispatching_run_queue = false;
1668 unsigned manager_dispatch_dbus_queue(Manager *m) {
1675 if (m->dispatching_dbus_queue)
1678 m->dispatching_dbus_queue = true;
1680 while ((meta = m->dbus_unit_queue)) {
1681 assert(meta->in_dbus_queue);
1683 bus_unit_send_change_signal(UNIT(meta));
1687 while ((j = m->dbus_job_queue)) {
1688 assert(j->in_dbus_queue);
1690 bus_job_send_change_signal(j);
1694 m->dispatching_dbus_queue = false;
1698 static int manager_dispatch_sigchld(Manager *m) {
1707 /* First we call waitd() for a PID and do not reap the
1708 * zombie. That way we can still access /proc/$PID for
1709 * it while it is a zombie. */
1710 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1712 if (errno == ECHILD)
1724 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1727 get_process_name(si.si_pid, &name);
1728 log_debug("Got SIGCHLD for process %llu (%s)", (unsigned long long) si.si_pid, strna(name));
1732 /* And now, we actually reap the zombie. */
1733 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1740 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1743 log_debug("Child %llu died (code=%s, status=%i/%s)",
1744 (long long unsigned) si.si_pid,
1745 sigchld_code_to_string(si.si_code),
1747 strna(si.si_code == CLD_EXITED ? exit_status_to_string(si.si_status) : strsignal(si.si_status)));
1749 if (!(u = hashmap_remove(m->watch_pids, UINT32_TO_PTR(si.si_pid))))
1752 log_debug("Child %llu belongs to %s", (long long unsigned) si.si_pid, u->meta.id);
1754 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1760 static void manager_start_target(Manager *m, const char *name) {
1763 if ((r = manager_add_job_by_name(m, JOB_START, name, JOB_REPLACE, true, NULL)) < 0)
1764 log_error("Failed to enqueue %s job: %s", name, strerror(-r));
1767 static int manager_process_signal_fd(Manager *m) {
1769 struct signalfd_siginfo sfsi;
1770 bool sigchld = false;
1775 if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) {
1780 if (errno == EAGAIN)
1786 switch (sfsi.ssi_signo) {
1793 if (m->running_as == MANAGER_INIT)
1794 /* This is for compatibility with the
1795 * original sysvinit */
1796 m->exit_code = MANAGER_REEXECUTE;
1798 m->exit_code = MANAGER_EXIT;
1803 if (m->running_as == MANAGER_INIT) {
1804 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET);
1808 m->exit_code = MANAGER_EXIT;
1812 if (m->running_as == MANAGER_INIT)
1813 manager_start_target(m, SPECIAL_KBREQUEST_TARGET);
1815 /* This is a nop on non-init */
1819 if (m->running_as == MANAGER_INIT)
1820 manager_start_target(m, SPECIAL_SIGPWR_TARGET);
1822 /* This is a nop on non-init */
1828 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1830 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1831 log_info("Trying to reconnect to bus...");
1836 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1837 log_info("Loading D-Bus service...");
1838 manager_start_target(m, SPECIAL_DBUS_SERVICE);
1845 manager_dump_units(m, stdout, "\t");
1846 manager_dump_jobs(m, stdout, "\t");
1850 m->exit_code = MANAGER_RELOAD;
1854 log_info("Got unhandled signal <%s>.", strsignal(sfsi.ssi_signo));
1859 return manager_dispatch_sigchld(m);
1864 static int process_event(Manager *m, struct epoll_event *ev) {
1871 assert(w = ev->data.ptr);
1877 /* An incoming signal? */
1878 if (ev->events != EPOLLIN)
1881 if ((r = manager_process_signal_fd(m)) < 0)
1888 /* Some fd event, to be dispatched to the units */
1889 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
1896 /* Some timer event, to be dispatched to the units */
1897 if ((k = read(w->fd, &v, sizeof(v))) != sizeof(v)) {
1899 if (k < 0 && (errno == EINTR || errno == EAGAIN))
1902 return k < 0 ? -errno : -EIO;
1905 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
1910 /* Some mount table change, intended for the mount subsystem */
1911 mount_fd_event(m, ev->events);
1915 /* Some notification from udev, intended for the device subsystem */
1916 device_fd_event(m, ev->events);
1919 case WATCH_DBUS_WATCH:
1920 bus_watch_event(m, w, ev->events);
1923 case WATCH_DBUS_TIMEOUT:
1924 bus_timeout_event(m, w, ev->events);
1928 assert_not_reached("Unknown epoll event type.");
1934 int manager_loop(Manager *m) {
1937 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 1000);
1940 m->exit_code = MANAGER_RUNNING;
1942 while (m->exit_code == MANAGER_RUNNING) {
1943 struct epoll_event event;
1946 if (!ratelimit_test(&rl)) {
1947 /* Yay, something is going seriously wrong, pause a little */
1948 log_warning("Looping too fast. Throttling execution a little.");
1952 if (manager_dispatch_load_queue(m) > 0)
1955 if (manager_dispatch_run_queue(m) > 0)
1958 if (bus_dispatch(m) > 0)
1961 if (manager_dispatch_cleanup_queue(m) > 0)
1964 if (manager_dispatch_gc_queue(m) > 0)
1967 if (manager_dispatch_dbus_queue(m) > 0)
1970 if ((n = epoll_wait(m->epoll_fd, &event, 1, -1)) < 0) {
1980 if ((r = process_event(m, &event)) < 0)
1984 return m->exit_code;
1987 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u) {
1995 if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
1998 if (!(n = bus_path_unescape(s+31)))
2001 u = manager_get_unit(m, n);
2012 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
2021 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
2024 if ((r = safe_atou(s + 30, &id)) < 0)
2027 if (!(j = manager_get_job(m, id)))
2035 static bool manager_utmp_good(Manager *m) {
2040 if ((r = mount_path_is_mounted(m, _PATH_UTMPX)) <= 0) {
2043 log_warning("Failed to determine whether " _PATH_UTMPX " is mounted: %s", strerror(-r));
2051 void manager_write_utmp_reboot(Manager *m) {
2056 if (m->utmp_reboot_written)
2059 if (m->running_as != MANAGER_INIT)
2062 if (!manager_utmp_good(m))
2065 if ((r = utmp_put_reboot(m->boot_timestamp)) < 0) {
2067 if (r != -ENOENT && r != -EROFS)
2068 log_warning("Failed to write utmp/wtmp: %s", strerror(-r));
2073 m->utmp_reboot_written = true;
2076 void manager_write_utmp_runlevel(Manager *m, Unit *u) {
2082 if (u->meta.type != UNIT_TARGET)
2085 if (m->running_as != MANAGER_INIT)
2088 if (!manager_utmp_good(m))
2091 if ((runlevel = target_get_runlevel(TARGET(u))) <= 0)
2094 if ((r = utmp_put_runlevel(0, runlevel, 0)) < 0) {
2096 if (r != -ENOENT && r != -EROFS)
2097 log_warning("Failed to write utmp/wtmp: %s", strerror(-r));
2101 void manager_dispatch_bus_name_owner_changed(
2104 const char* old_owner,
2105 const char *new_owner) {
2112 if (!(u = hashmap_get(m->watch_bus, name)))
2115 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2118 void manager_dispatch_bus_query_pid_done(
2129 if (!(u = hashmap_get(m->watch_bus, name)))
2132 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
2135 int manager_open_serialization(FILE **_f) {
2143 if (asprintf(&path, "/dev/shm/systemd-%u.dump-XXXXXX", (unsigned) getpid()) < 0)
2146 saved_umask = umask(0077);
2147 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
2157 log_debug("Serializing state to %s", path);
2160 if (!(f = fdopen(fd, "w+")) < 0)
2168 int manager_serialize(Manager *m, FILE *f, FDSet *fds) {
2178 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2179 if (u->meta.id != t)
2182 if (!unit_can_serialize(u))
2186 fputs(u->meta.id, f);
2189 if ((r = unit_serialize(u, f, fds)) < 0)
2199 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2205 log_debug("Deserializing state...");
2209 char name[UNIT_NAME_MAX+2];
2212 if (!fgets(name, sizeof(name), f)) {
2221 if ((r = manager_load_unit(m, strstrip(name), NULL, &u)) < 0)
2224 if ((r = unit_deserialize(u, f, fds)) < 0)
2234 int manager_reload(Manager *m) {
2241 if ((r = manager_open_serialization(&f)) < 0)
2244 if (!(fds = fdset_new())) {
2249 if ((r = manager_serialize(m, f, fds)) < 0)
2252 if (fseeko(f, 0, SEEK_SET) < 0) {
2257 /* From here on there is no way back. */
2258 manager_clear_jobs_and_units(m);
2260 /* First, enumerate what we can from all config files */
2261 if ((q = manager_enumerate(m)) < 0)
2264 /* Second, deserialize our stored data */
2265 if ((q = manager_deserialize(m, f, fds)) < 0)
2271 /* Third, fire things up! */
2272 if ((q = manager_coldplug(m)) < 0)
2285 static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
2286 [MANAGER_INIT] = "init",
2287 [MANAGER_SYSTEM] = "system",
2288 [MANAGER_SESSION] = "session"
2291 DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs);