1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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>
31 #include <sys/reboot.h>
32 #include <sys/ioctl.h>
36 #include <sys/types.h>
44 #include <systemd/sd-daemon.h>
53 #include "ratelimit.h"
55 #include "mount-setup.h"
56 #include "unit-name.h"
57 #include "dbus-unit.h"
60 #include "path-lookup.h"
62 #include "bus-errors.h"
63 #include "exit-status.h"
67 /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
68 #define GC_QUEUE_ENTRIES_MAX 16
70 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
71 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
73 /* Where clients shall send notification messages to */
74 #define NOTIFY_SOCKET_SYSTEM "/run/systemd/notify"
75 #define NOTIFY_SOCKET_USER "@/org/freedesktop/systemd1/notify"
77 static int manager_setup_notify(Manager *m) {
80 struct sockaddr_un un;
82 struct epoll_event ev;
88 m->notify_watch.type = WATCH_NOTIFY;
89 if ((m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
90 log_error("Failed to allocate notification socket: %m");
95 sa.sa.sa_family = AF_UNIX;
98 snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET_USER "/%llu", random_ull());
100 unlink(NOTIFY_SOCKET_SYSTEM);
101 strncpy(sa.un.sun_path, NOTIFY_SOCKET_SYSTEM, sizeof(sa.un.sun_path));
104 if (sa.un.sun_path[0] == '@')
105 sa.un.sun_path[0] = 0;
108 r = bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1));
112 log_error("bind() failed: %m");
116 if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
117 log_error("SO_PASSCRED failed: %m");
123 ev.data.ptr = &m->notify_watch;
125 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0)
128 if (sa.un.sun_path[0] == 0)
129 sa.un.sun_path[0] = '@';
131 if (!(m->notify_socket = strdup(sa.un.sun_path)))
134 log_debug("Using notification socket %s", m->notify_socket);
139 static int enable_special_signals(Manager *m) {
144 /* Enable that we get SIGINT on control-alt-del */
145 if (reboot(RB_DISABLE_CAD) < 0)
146 log_warning("Failed to enable ctrl-alt-del handling: %m");
148 if ((fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0)
149 log_warning("Failed to open /dev/tty0: %m");
151 /* Enable that we get SIGWINCH on kbrequest */
152 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
153 log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
155 close_nointr_nofail(fd);
161 static int manager_setup_signals(Manager *m) {
163 struct epoll_event ev;
168 /* We are not interested in SIGSTOP and friends. */
170 sa.sa_handler = SIG_DFL;
171 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
172 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
174 assert_se(sigemptyset(&mask) == 0);
176 sigset_add_many(&mask,
177 SIGCHLD, /* Child died */
178 SIGTERM, /* Reexecute daemon */
179 SIGHUP, /* Reload configuration */
180 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
181 SIGUSR2, /* systemd: dump status */
182 SIGINT, /* Kernel sends us this on control-alt-del */
183 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
184 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
185 SIGRTMIN+0, /* systemd: start default.target */
186 SIGRTMIN+1, /* systemd: isolate rescue.target */
187 SIGRTMIN+2, /* systemd: isolate emergency.target */
188 SIGRTMIN+3, /* systemd: start halt.target */
189 SIGRTMIN+4, /* systemd: start poweroff.target */
190 SIGRTMIN+5, /* systemd: start reboot.target */
191 SIGRTMIN+6, /* systemd: start kexec.target */
192 SIGRTMIN+13, /* systemd: Immediate halt */
193 SIGRTMIN+14, /* systemd: Immediate poweroff */
194 SIGRTMIN+15, /* systemd: Immediate reboot */
195 SIGRTMIN+16, /* systemd: Immediate kexec */
196 SIGRTMIN+20, /* systemd: enable status messages */
197 SIGRTMIN+21, /* systemd: disable status messages */
198 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
199 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
200 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
201 SIGRTMIN+27, /* systemd: set log target to console */
202 SIGRTMIN+28, /* systemd: set log target to kmsg */
203 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */
205 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
207 m->signal_watch.type = WATCH_SIGNAL;
208 if ((m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0)
213 ev.data.ptr = &m->signal_watch;
215 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
218 if (m->running_as == MANAGER_SYSTEM)
219 return enable_special_signals(m);
224 static void manager_strip_environment(Manager *m) {
227 /* Remove variables from the inherited set that are part of
228 * the container interface:
229 * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
230 strv_remove_prefix(m->environment, "container=");
231 strv_remove_prefix(m->environment, "container_");
233 /* Remove variables from the inherited set that are part of
234 * the initrd interface:
235 * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
236 strv_remove_prefix(m->environment, "RD_");
239 int manager_new(ManagerRunningAs running_as, Manager **_m) {
244 assert(running_as >= 0);
245 assert(running_as < _MANAGER_RUNNING_AS_MAX);
247 if (!(m = new0(Manager, 1)))
250 dual_timestamp_get(&m->startup_timestamp);
252 m->running_as = running_as;
253 m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
254 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
255 m->pin_cgroupfs_fd = -1;
261 m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = m->dev_autofs_fd = m->swap_watch.fd = -1;
262 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
264 m->environment = strv_copy(environ);
268 manager_strip_environment(m);
270 if (running_as == MANAGER_SYSTEM) {
271 m->default_controllers = strv_new("cpu", NULL);
272 if (!m->default_controllers)
276 if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
279 if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
282 if (!(m->transaction_jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
285 if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
288 if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
291 if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
294 if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
297 if ((r = lookup_paths_init(&m->lookup_paths, m->running_as, true)) < 0)
300 if ((r = manager_setup_signals(m)) < 0)
303 if ((r = manager_setup_cgroup(m)) < 0)
306 if ((r = manager_setup_notify(m)) < 0)
309 /* Try to connect to the busses, if possible. */
310 if ((r = bus_init(m, running_as != MANAGER_SYSTEM)) < 0)
314 if ((m->audit_fd = audit_open()) < 0 &&
315 /* If the kernel lacks netlink or audit support,
316 * don't worry about it. */
317 errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
318 log_error("Failed to connect to audit log: %m");
321 m->taint_usr = dir_is_empty("/usr") > 0;
331 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
337 while ((u = m->cleanup_queue)) {
338 assert(u->in_cleanup_queue);
348 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
349 GC_OFFSET_UNSURE, /* No clue */
350 GC_OFFSET_GOOD, /* We still need this unit */
351 GC_OFFSET_BAD, /* We don't need this unit anymore */
355 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
362 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
363 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
364 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
367 if (u->in_cleanup_queue)
370 if (unit_check_gc(u))
373 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
377 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
378 unit_gc_sweep(other, gc_marker);
380 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
383 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
390 /* We were unable to find anything out about this entry, so
391 * let's investigate it later */
392 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
393 unit_add_to_gc_queue(u);
397 /* We definitely know that this one is not useful anymore, so
398 * let's mark it for deletion */
399 u->gc_marker = gc_marker + GC_OFFSET_BAD;
400 unit_add_to_cleanup_queue(u);
404 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
407 static unsigned manager_dispatch_gc_queue(Manager *m) {
414 if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
415 (m->gc_queue_timestamp <= 0 ||
416 (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
419 log_debug("Running GC...");
421 m->gc_marker += _GC_OFFSET_MAX;
422 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
425 gc_marker = m->gc_marker;
427 while ((u = m->gc_queue)) {
428 assert(u->in_gc_queue);
430 unit_gc_sweep(u, gc_marker);
432 LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
433 u->in_gc_queue = false;
437 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
438 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
439 log_debug("Collecting %s", u->id);
440 u->gc_marker = gc_marker + GC_OFFSET_BAD;
441 unit_add_to_cleanup_queue(u);
445 m->n_in_gc_queue = 0;
446 m->gc_queue_timestamp = 0;
451 static void manager_clear_jobs_and_units(Manager *m) {
457 while ((j = hashmap_first(m->transaction_jobs)))
460 while ((u = hashmap_first(m->units)))
463 manager_dispatch_cleanup_queue(m);
465 assert(!m->load_queue);
466 assert(!m->run_queue);
467 assert(!m->dbus_unit_queue);
468 assert(!m->dbus_job_queue);
469 assert(!m->cleanup_queue);
470 assert(!m->gc_queue);
472 assert(hashmap_isempty(m->transaction_jobs));
473 assert(hashmap_isempty(m->jobs));
474 assert(hashmap_isempty(m->units));
477 void manager_free(Manager *m) {
482 manager_clear_jobs_and_units(m);
484 for (c = 0; c < _UNIT_TYPE_MAX; c++)
485 if (unit_vtable[c]->shutdown)
486 unit_vtable[c]->shutdown(m);
488 /* If we reexecute ourselves, we keep the root cgroup
490 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
492 manager_undo_generators(m);
496 hashmap_free(m->units);
497 hashmap_free(m->jobs);
498 hashmap_free(m->transaction_jobs);
499 hashmap_free(m->watch_pids);
500 hashmap_free(m->watch_bus);
502 if (m->epoll_fd >= 0)
503 close_nointr_nofail(m->epoll_fd);
504 if (m->signal_watch.fd >= 0)
505 close_nointr_nofail(m->signal_watch.fd);
506 if (m->notify_watch.fd >= 0)
507 close_nointr_nofail(m->notify_watch.fd);
510 if (m->audit_fd >= 0)
511 audit_close(m->audit_fd);
514 free(m->notify_socket);
516 lookup_paths_free(&m->lookup_paths);
517 strv_free(m->environment);
519 strv_free(m->default_controllers);
521 hashmap_free(m->cgroup_bondings);
522 set_free_free(m->unit_path_cache);
527 int manager_enumerate(Manager *m) {
533 /* Let's ask every type to load all units from disk/kernel
534 * that it might know */
535 for (c = 0; c < _UNIT_TYPE_MAX; c++)
536 if (unit_vtable[c]->enumerate)
537 if ((q = unit_vtable[c]->enumerate(m)) < 0)
540 manager_dispatch_load_queue(m);
544 int manager_coldplug(Manager *m) {
552 /* Then, let's set up their initial state. */
553 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
559 if ((q = unit_coldplug(u)) < 0)
566 static void manager_build_unit_path_cache(Manager *m) {
573 set_free_free(m->unit_path_cache);
575 if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) {
576 log_error("Failed to allocate unit path cache.");
580 /* This simply builds a list of files we know exist, so that
581 * we don't always have to go to disk */
583 STRV_FOREACH(i, m->lookup_paths.unit_path) {
586 if (!(d = opendir(*i))) {
587 log_error("Failed to open directory: %m");
591 while ((de = readdir(d))) {
594 if (ignore_file(de->d_name))
597 p = join(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
603 if ((r = set_put(m->unit_path_cache, p)) < 0) {
616 log_error("Failed to build unit path cache: %s", strerror(-r));
618 set_free_free(m->unit_path_cache);
619 m->unit_path_cache = NULL;
625 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
630 manager_run_generators(m);
632 manager_build_unit_path_cache(m);
634 /* If we will deserialize make sure that during enumeration
635 * this is already known, so we increase the counter here
640 /* First, enumerate what we can from all config files */
641 r = manager_enumerate(m);
643 /* Second, deserialize if there is something to deserialize */
645 if ((q = manager_deserialize(m, serialization, fds)) < 0)
648 /* Third, fire things up! */
649 if ((q = manager_coldplug(m)) < 0)
653 assert(m->n_reloading > 0);
660 static void transaction_delete_job(Manager *m, Job *j, bool delete_dependencies) {
664 /* Deletes one job from the transaction */
666 manager_transaction_unlink_job(m, j, delete_dependencies);
672 static void transaction_delete_unit(Manager *m, Unit *u) {
675 /* Deletes all jobs associated with a certain unit from the
678 while ((j = hashmap_get(m->transaction_jobs, u)))
679 transaction_delete_job(m, j, true);
682 static void transaction_clean_dependencies(Manager *m) {
688 /* Drops all dependencies of all installed jobs */
690 HASHMAP_FOREACH(j, m->jobs, i) {
691 while (j->subject_list)
692 job_dependency_free(j->subject_list);
693 while (j->object_list)
694 job_dependency_free(j->object_list);
697 assert(!m->transaction_anchor);
700 static void transaction_abort(Manager *m) {
705 while ((j = hashmap_first(m->transaction_jobs)))
707 transaction_delete_job(m, j, true);
711 assert(hashmap_isempty(m->transaction_jobs));
713 transaction_clean_dependencies(m);
716 static void transaction_find_jobs_that_matter_to_anchor(Manager *m, Job *j, unsigned generation) {
721 /* A recursive sweep through the graph that marks all units
722 * that matter to the anchor job, i.e. are directly or
723 * indirectly a dependency of the anchor job via paths that
724 * are fully marked as mattering. */
729 l = m->transaction_anchor;
731 LIST_FOREACH(subject, l, l) {
733 /* This link does not matter */
737 /* This unit has already been marked */
738 if (l->object->generation == generation)
741 l->object->matters_to_anchor = true;
742 l->object->generation = generation;
744 transaction_find_jobs_that_matter_to_anchor(m, l->object, generation);
748 static void transaction_merge_and_delete_job(Manager *m, Job *j, Job *other, JobType t) {
749 JobDependency *l, *last;
753 assert(j->unit == other->unit);
754 assert(!j->installed);
756 /* Merges 'other' into 'j' and then deletes j. */
759 j->state = JOB_WAITING;
760 j->override = j->override || other->override;
762 j->matters_to_anchor = j->matters_to_anchor || other->matters_to_anchor;
764 /* Patch us in as new owner of the JobDependency objects */
766 LIST_FOREACH(subject, l, other->subject_list) {
767 assert(l->subject == other);
772 /* Merge both lists */
774 last->subject_next = j->subject_list;
776 j->subject_list->subject_prev = last;
777 j->subject_list = other->subject_list;
780 /* Patch us in as new owner of the JobDependency objects */
782 LIST_FOREACH(object, l, other->object_list) {
783 assert(l->object == other);
788 /* Merge both lists */
790 last->object_next = j->object_list;
792 j->object_list->object_prev = last;
793 j->object_list = other->object_list;
796 /* Kill the other job */
797 other->subject_list = NULL;
798 other->object_list = NULL;
799 transaction_delete_job(m, other, true);
801 static bool job_is_conflicted_by(Job *j) {
806 /* Returns true if this job is pulled in by a least one
807 * ConflictedBy dependency. */
809 LIST_FOREACH(object, l, j->object_list)
816 static int delete_one_unmergeable_job(Manager *m, Job *j) {
821 /* Tries to delete one item in the linked list
822 * j->transaction_next->transaction_next->... that conflicts
823 * with another one, in an attempt to make an inconsistent
824 * transaction work. */
826 /* We rely here on the fact that if a merged with b does not
827 * merge with c, either a or b merge with c neither */
828 LIST_FOREACH(transaction, j, j)
829 LIST_FOREACH(transaction, k, j->transaction_next) {
832 /* Is this one mergeable? Then skip it */
833 if (job_type_is_mergeable(j->type, k->type))
836 /* Ok, we found two that conflict, let's see if we can
837 * drop one of them */
838 if (!j->matters_to_anchor && !k->matters_to_anchor) {
840 /* Both jobs don't matter, so let's
841 * find the one that is smarter to
842 * remove. Let's think positive and
843 * rather remove stops then starts --
844 * except if something is being
845 * stopped because it is conflicted by
846 * another unit in which case we
847 * rather remove the start. */
849 log_debug("Looking at job %s/%s conflicted_by=%s", j->unit->id, job_type_to_string(j->type), yes_no(j->type == JOB_STOP && job_is_conflicted_by(j)));
850 log_debug("Looking at job %s/%s conflicted_by=%s", k->unit->id, job_type_to_string(k->type), yes_no(k->type == JOB_STOP && job_is_conflicted_by(k)));
852 if (j->type == JOB_STOP) {
854 if (job_is_conflicted_by(j))
859 } else if (k->type == JOB_STOP) {
861 if (job_is_conflicted_by(k))
868 } else if (!j->matters_to_anchor)
870 else if (!k->matters_to_anchor)
875 /* Ok, we can drop one, so let's do so. */
876 log_debug("Fixing conflicting jobs by deleting job %s/%s", d->unit->id, job_type_to_string(d->type));
877 transaction_delete_job(m, d, true);
884 static int transaction_merge_jobs(Manager *m, DBusError *e) {
891 /* First step, check whether any of the jobs for one specific
892 * task conflict. If so, try to drop one of them. */
893 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
898 LIST_FOREACH(transaction, k, j->transaction_next) {
899 if (job_type_merge(&t, k->type) >= 0)
902 /* OK, we could not merge all jobs for this
903 * action. Let's see if we can get rid of one
906 if ((r = delete_one_unmergeable_job(m, j)) >= 0)
907 /* Ok, we managed to drop one, now
908 * let's ask our callers to call us
909 * again after garbage collecting */
912 /* We couldn't merge anything. Failure */
913 dbus_set_error(e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, "Transaction contains conflicting jobs '%s' and '%s' for %s. Probably contradicting requirement dependencies configured.",
914 job_type_to_string(t), job_type_to_string(k->type), k->unit->id);
919 /* Second step, merge the jobs. */
920 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
924 /* Merge all transactions */
925 LIST_FOREACH(transaction, k, j->transaction_next)
926 assert_se(job_type_merge(&t, k->type) == 0);
928 /* If an active job is mergeable, merge it too */
930 job_type_merge(&t, j->unit->job->type); /* Might fail. Which is OK */
932 while ((k = j->transaction_next)) {
934 transaction_merge_and_delete_job(m, k, j, t);
937 transaction_merge_and_delete_job(m, j, k, t);
940 if (j->unit->job && !j->installed)
941 transaction_merge_and_delete_job(m, j, j->unit->job, t);
943 assert(!j->transaction_next);
944 assert(!j->transaction_prev);
950 static void transaction_drop_redundant(Manager *m) {
955 /* Goes through the transaction and removes all jobs that are
964 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
965 bool changes_something = false;
968 LIST_FOREACH(transaction, k, j) {
970 if (!job_is_anchor(k) &&
971 (k->installed || job_type_is_redundant(k->type, unit_active_state(k->unit))) &&
972 (!k->unit->job || !job_type_is_conflicting(k->type, k->unit->job->type)))
975 changes_something = true;
979 if (changes_something)
982 /* log_debug("Found redundant job %s/%s, dropping.", j->unit->id, job_type_to_string(j->type)); */
983 transaction_delete_job(m, j, false);
991 static bool unit_matters_to_anchor(Unit *u, Job *j) {
993 assert(!j->transaction_prev);
995 /* Checks whether at least one of the jobs for this unit
996 * matters to the anchor. */
998 LIST_FOREACH(transaction, j, j)
999 if (j->matters_to_anchor)
1005 static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation, DBusError *e) {
1012 assert(!j->transaction_prev);
1014 /* Does a recursive sweep through the ordering graph, looking
1015 * for a cycle. If we find cycle we try to break it. */
1017 /* Have we seen this before? */
1018 if (j->generation == generation) {
1021 /* If the marker is NULL we have been here already and
1022 * decided the job was loop-free from here. Hence
1023 * shortcut things and return right-away. */
1027 /* So, the marker is not NULL and we already have been
1028 * here. We have a cycle. Let's try to break it. We go
1029 * backwards in our path and try to find a suitable
1030 * job to remove. We use the marker to find our way
1031 * back, since smart how we are we stored our way back
1033 log_warning("Found ordering cycle on %s/%s", j->unit->id, job_type_to_string(j->type));
1036 for (k = from; k; k = ((k->generation == generation && k->marker != k) ? k->marker : NULL)) {
1038 log_info("Walked on cycle path to %s/%s", k->unit->id, job_type_to_string(k->type));
1042 !unit_matters_to_anchor(k->unit, k)) {
1043 /* Ok, we can drop this one, so let's
1048 /* Check if this in fact was the beginning of
1056 log_warning("Breaking ordering cycle by deleting job %s/%s", delete->unit->id, job_type_to_string(delete->type));
1057 transaction_delete_unit(m, delete->unit);
1061 log_error("Unable to break cycle");
1063 dbus_set_error(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, "Transaction order is cyclic. See system logs for details.");
1067 /* Make the marker point to where we come from, so that we can
1068 * find our way backwards if we want to break a cycle. We use
1069 * a special marker for the beginning: we point to
1071 j->marker = from ? from : j;
1072 j->generation = generation;
1074 /* We assume that the the dependencies are bidirectional, and
1075 * hence can ignore UNIT_AFTER */
1076 SET_FOREACH(u, j->unit->dependencies[UNIT_BEFORE], i) {
1079 /* Is there a job for this unit? */
1080 if (!(o = hashmap_get(m->transaction_jobs, u)))
1082 /* Ok, there is no job for this in the
1083 * transaction, but maybe there is already one
1088 if ((r = transaction_verify_order_one(m, o, j, generation, e)) < 0)
1092 /* Ok, let's backtrack, and remember that this entry is not on
1093 * our path anymore. */
1099 static int transaction_verify_order(Manager *m, unsigned *generation, DBusError *e) {
1108 /* Check if the ordering graph is cyclic. If it is, try to fix
1109 * that up by dropping one of the jobs. */
1111 g = (*generation)++;
1113 HASHMAP_FOREACH(j, m->transaction_jobs, i)
1114 if ((r = transaction_verify_order_one(m, j, NULL, g, e)) < 0)
1120 static void transaction_collect_garbage(Manager *m) {
1125 /* Drop jobs that are not required by any other job */
1133 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1134 if (j->object_list) {
1135 /* log_debug("Keeping job %s/%s because of %s/%s", */
1136 /* j->unit->id, job_type_to_string(j->type), */
1137 /* j->object_list->subject ? j->object_list->subject->unit->id : "root", */
1138 /* j->object_list->subject ? job_type_to_string(j->object_list->subject->type) : "root"); */
1142 /* log_debug("Garbage collecting job %s/%s", j->unit->id, job_type_to_string(j->type)); */
1143 transaction_delete_job(m, j, true);
1151 static int transaction_is_destructive(Manager *m, DBusError *e) {
1157 /* Checks whether applying this transaction means that
1158 * existing jobs would be replaced */
1160 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1163 assert(!j->transaction_prev);
1164 assert(!j->transaction_next);
1167 j->unit->job != j &&
1168 !job_type_is_superset(j->type, j->unit->job->type)) {
1170 dbus_set_error(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, "Transaction is destructive.");
1178 static void transaction_minimize_impact(Manager *m) {
1182 /* Drops all unnecessary jobs that reverse already active jobs
1183 * or that stop a running service. */
1191 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1192 LIST_FOREACH(transaction, j, j) {
1193 bool stops_running_service, changes_existing_job;
1195 /* If it matters, we shouldn't drop it */
1196 if (j->matters_to_anchor)
1199 /* Would this stop a running service?
1200 * Would this change an existing job?
1201 * If so, let's drop this entry */
1203 stops_running_service =
1204 j->type == JOB_STOP && UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(j->unit));
1206 changes_existing_job =
1208 job_type_is_conflicting(j->type, j->unit->job->type);
1210 if (!stops_running_service && !changes_existing_job)
1213 if (stops_running_service)
1214 log_debug("%s/%s would stop a running service.", j->unit->id, job_type_to_string(j->type));
1216 if (changes_existing_job)
1217 log_debug("%s/%s would change existing job.", j->unit->id, job_type_to_string(j->type));
1219 /* Ok, let's get rid of this */
1220 log_debug("Deleting %s/%s to minimize impact.", j->unit->id, job_type_to_string(j->type));
1222 transaction_delete_job(m, j, true);
1234 static int transaction_apply(Manager *m, JobMode mode) {
1239 /* Moves the transaction jobs to the set of active jobs */
1241 if (mode == JOB_ISOLATE) {
1243 /* When isolating first kill all installed jobs which
1244 * aren't part of the new transaction */
1246 HASHMAP_FOREACH(j, m->jobs, i) {
1247 assert(j->installed);
1249 if (hashmap_get(m->transaction_jobs, j->unit))
1252 /* 'j' itself is safe to remove, but if other jobs
1253 are invalidated recursively, our iterator may become
1254 invalid and we need to start over. */
1255 if (job_finish_and_invalidate(j, JOB_CANCELED) > 0)
1260 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1262 assert(!j->transaction_prev);
1263 assert(!j->transaction_next);
1268 if ((r = hashmap_put(m->jobs, UINT32_TO_PTR(j->id), j)) < 0)
1272 while ((j = hashmap_steal_first(m->transaction_jobs))) {
1274 /* log_debug("Skipping already installed job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id); */
1279 job_free(j->unit->job);
1282 j->installed = true;
1283 m->n_installed_jobs ++;
1285 /* We're fully installed. Now let's free data we don't
1288 assert(!j->transaction_next);
1289 assert(!j->transaction_prev);
1291 job_add_to_run_queue(j);
1292 job_add_to_dbus_queue(j);
1295 log_debug("Installed new job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
1298 /* As last step, kill all remaining job dependencies. */
1299 transaction_clean_dependencies(m);
1305 HASHMAP_FOREACH(j, m->transaction_jobs, i) {
1309 hashmap_remove(m->jobs, UINT32_TO_PTR(j->id));
1315 static int transaction_activate(Manager *m, JobMode mode, DBusError *e) {
1317 unsigned generation = 1;
1321 /* This applies the changes recorded in transaction_jobs to
1322 * the actual list of jobs, if possible. */
1324 /* First step: figure out which jobs matter */
1325 transaction_find_jobs_that_matter_to_anchor(m, NULL, generation++);
1327 /* Second step: Try not to stop any running services if
1328 * we don't have to. Don't try to reverse running
1329 * jobs if we don't have to. */
1330 if (mode == JOB_FAIL)
1331 transaction_minimize_impact(m);
1333 /* Third step: Drop redundant jobs */
1334 transaction_drop_redundant(m);
1337 /* Fourth step: Let's remove unneeded jobs that might
1339 if (mode != JOB_ISOLATE)
1340 transaction_collect_garbage(m);
1342 /* Fifth step: verify order makes sense and correct
1343 * cycles if necessary and possible */
1344 if ((r = transaction_verify_order(m, &generation, e)) >= 0)
1348 log_warning("Requested transaction contains an unfixable cyclic ordering dependency: %s", bus_error(e, r));
1352 /* Let's see if the resulting transaction ordering
1353 * graph is still cyclic... */
1357 /* Sixth step: let's drop unmergeable entries if
1358 * necessary and possible, merge entries we can
1360 if ((r = transaction_merge_jobs(m, e)) >= 0)
1364 log_warning("Requested transaction contains unmergeable jobs: %s", bus_error(e, r));
1368 /* Seventh step: an entry got dropped, let's garbage
1369 * collect its dependencies. */
1370 if (mode != JOB_ISOLATE)
1371 transaction_collect_garbage(m);
1373 /* Let's see if the resulting transaction still has
1374 * unmergeable entries ... */
1377 /* Eights step: Drop redundant jobs again, if the merging now allows us to drop more. */
1378 transaction_drop_redundant(m);
1380 /* Ninth step: check whether we can actually apply this */
1381 if (mode == JOB_FAIL)
1382 if ((r = transaction_is_destructive(m, e)) < 0) {
1383 log_notice("Requested transaction contradicts existing jobs: %s", bus_error(e, r));
1387 /* Tenth step: apply changes */
1388 if ((r = transaction_apply(m, mode)) < 0) {
1389 log_warning("Failed to apply transaction: %s", strerror(-r));
1393 assert(hashmap_isempty(m->transaction_jobs));
1394 assert(!m->transaction_anchor);
1399 transaction_abort(m);
1403 static Job* transaction_add_one_job(Manager *m, JobType type, Unit *unit, bool override, bool *is_new) {
1409 /* Looks for an existing prospective job and returns that. If
1410 * it doesn't exist it is created and added to the prospective
1413 f = hashmap_get(m->transaction_jobs, unit);
1415 LIST_FOREACH(transaction, j, f) {
1416 assert(j->unit == unit);
1418 if (j->type == type) {
1425 if (unit->job && unit->job->type == type)
1427 else if (!(j = job_new(m, type, unit)))
1432 j->matters_to_anchor = false;
1433 j->override = override;
1435 LIST_PREPEND(Job, transaction, f, j);
1437 if (hashmap_replace(m->transaction_jobs, unit, f) < 0) {
1445 /* log_debug("Added job %s/%s to transaction.", unit->id, job_type_to_string(type)); */
1450 void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies) {
1454 if (j->transaction_prev)
1455 j->transaction_prev->transaction_next = j->transaction_next;
1456 else if (j->transaction_next)
1457 hashmap_replace(m->transaction_jobs, j->unit, j->transaction_next);
1459 hashmap_remove_value(m->transaction_jobs, j->unit, j);
1461 if (j->transaction_next)
1462 j->transaction_next->transaction_prev = j->transaction_prev;
1464 j->transaction_prev = j->transaction_next = NULL;
1466 while (j->subject_list)
1467 job_dependency_free(j->subject_list);
1469 while (j->object_list) {
1470 Job *other = j->object_list->matters ? j->object_list->subject : NULL;
1472 job_dependency_free(j->object_list);
1474 if (other && delete_dependencies) {
1475 log_debug("Deleting job %s/%s as dependency of job %s/%s",
1476 other->unit->id, job_type_to_string(other->type),
1477 j->unit->id, job_type_to_string(j->type));
1478 transaction_delete_job(m, other, delete_dependencies);
1483 static int transaction_add_job_and_dependencies(
1491 bool ignore_requirements,
1502 assert(type < _JOB_TYPE_MAX);
1505 /* log_debug("Pulling in %s/%s from %s/%s", */
1506 /* unit->id, job_type_to_string(type), */
1507 /* by ? by->unit->id : "NA", */
1508 /* by ? job_type_to_string(by->type) : "NA"); */
1510 if (unit->load_state != UNIT_LOADED &&
1511 unit->load_state != UNIT_ERROR &&
1512 unit->load_state != UNIT_MASKED) {
1513 dbus_set_error(e, BUS_ERROR_LOAD_FAILED, "Unit %s is not loaded properly.", unit->id);
1517 if (type != JOB_STOP && unit->load_state == UNIT_ERROR) {
1518 dbus_set_error(e, BUS_ERROR_LOAD_FAILED,
1519 "Unit %s failed to load: %s. "
1520 "See system logs and 'systemctl status %s' for details.",
1522 strerror(-unit->load_error),
1527 if (type != JOB_STOP && unit->load_state == UNIT_MASKED) {
1528 dbus_set_error(e, BUS_ERROR_MASKED, "Unit %s is masked.", unit->id);
1532 if (!unit_job_is_applicable(unit, type)) {
1533 dbus_set_error(e, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, "Job type %s is not applicable for unit %s.", job_type_to_string(type), unit->id);
1537 /* First add the job. */
1538 if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new)))
1541 ret->ignore_order = ret->ignore_order || ignore_order;
1543 /* Then, add a link to the job. */
1544 if (!job_dependency_new(by, ret, matters, conflicts))
1547 if (is_new && !ignore_requirements) {
1550 /* If we are following some other unit, make sure we
1551 * add all dependencies of everybody following. */
1552 if (unit_following_set(ret->unit, &following) > 0) {
1553 SET_FOREACH(dep, following, i)
1554 if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) {
1555 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
1561 set_free(following);
1564 /* Finally, recursively add in all dependencies. */
1565 if (type == JOB_START || type == JOB_RELOAD_OR_START) {
1566 SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRES], i)
1567 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
1575 SET_FOREACH(dep, ret->unit->dependencies[UNIT_BIND_TO], i)
1576 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
1585 SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
1586 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) {
1587 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
1593 SET_FOREACH(dep, ret->unit->dependencies[UNIT_WANTS], i)
1594 if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, false, ignore_order, e, NULL)) < 0) {
1595 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
1601 SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUISITE], i)
1602 if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
1611 SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
1612 if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) {
1613 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
1619 SET_FOREACH(dep, ret->unit->dependencies[UNIT_CONFLICTS], i)
1620 if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, false, ignore_order, e, NULL)) < 0) {
1629 SET_FOREACH(dep, ret->unit->dependencies[UNIT_CONFLICTED_BY], i)
1630 if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) {
1631 log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
1639 if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
1641 SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRED_BY], i)
1642 if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
1651 SET_FOREACH(dep, ret->unit->dependencies[UNIT_BOUND_BY], i)
1652 if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) {
1662 if (type == JOB_RELOAD || type == JOB_RELOAD_OR_START) {
1664 SET_FOREACH(dep, ret->unit->dependencies[UNIT_PROPAGATE_RELOAD_TO], i) {
1665 r = transaction_add_job_and_dependencies(m, JOB_RELOAD, dep, ret, false, override, false, false, ignore_order, e, NULL);
1668 log_warning("Cannot add dependency reload job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
1676 /* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */
1688 static int transaction_add_isolate_jobs(Manager *m) {
1696 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1698 /* ignore aliases */
1702 if (u->ignore_on_isolate)
1705 /* No need to stop inactive jobs */
1706 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)) && !u->job)
1709 /* Is there already something listed for this? */
1710 if (hashmap_get(m->transaction_jobs, u))
1713 if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, false, false, NULL, NULL)) < 0)
1714 log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->id, strerror(-r));
1720 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
1725 assert(type < _JOB_TYPE_MAX);
1727 assert(mode < _JOB_MODE_MAX);
1729 if (mode == JOB_ISOLATE && type != JOB_START) {
1730 dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
1734 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
1735 dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
1739 log_debug("Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
1741 if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false,
1742 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1743 mode == JOB_IGNORE_DEPENDENCIES, e, &ret)) < 0) {
1744 transaction_abort(m);
1748 if (mode == JOB_ISOLATE)
1749 if ((r = transaction_add_isolate_jobs(m)) < 0) {
1750 transaction_abort(m);
1754 if ((r = transaction_activate(m, mode, e)) < 0)
1757 log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) ret->id);
1765 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
1770 assert(type < _JOB_TYPE_MAX);
1772 assert(mode < _JOB_MODE_MAX);
1774 if ((r = manager_load_unit(m, name, NULL, NULL, &unit)) < 0)
1777 return manager_add_job(m, type, unit, mode, override, e, _ret);
1780 Job *manager_get_job(Manager *m, uint32_t id) {
1783 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1786 Unit *manager_get_unit(Manager *m, const char *name) {
1790 return hashmap_get(m->units, name);
1793 unsigned manager_dispatch_load_queue(Manager *m) {
1799 /* Make sure we are not run recursively */
1800 if (m->dispatching_load_queue)
1803 m->dispatching_load_queue = true;
1805 /* Dispatches the load queue. Takes a unit from the queue and
1806 * tries to load its data until the queue is empty */
1808 while ((u = m->load_queue)) {
1809 assert(u->in_load_queue);
1815 m->dispatching_load_queue = false;
1819 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1825 assert(name || path);
1827 /* This will prepare the unit for loading, but not actually
1828 * load anything from disk. */
1830 if (path && !is_path(path)) {
1831 dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
1836 name = file_name_from_path(path);
1838 t = unit_name_to_type(name);
1840 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid_no_type(name, false)) {
1841 dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
1845 ret = manager_get_unit(m, name);
1851 ret = unit_new(m, unit_vtable[t]->object_size);
1856 ret->fragment_path = strdup(path);
1857 if (!ret->fragment_path) {
1863 if ((r = unit_add_name(ret, name)) < 0) {
1868 unit_add_to_load_queue(ret);
1869 unit_add_to_dbus_queue(ret);
1870 unit_add_to_gc_queue(ret);
1878 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1883 /* This will load the service information files, but not actually
1884 * start any services or anything. */
1886 if ((r = manager_load_unit_prepare(m, name, path, e, _ret)) != 0)
1889 manager_dispatch_load_queue(m);
1892 *_ret = unit_follow_merge(*_ret);
1897 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1904 HASHMAP_FOREACH(j, s->jobs, i)
1905 job_dump(j, f, prefix);
1908 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1916 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1918 unit_dump(u, f, prefix);
1921 void manager_clear_jobs(Manager *m) {
1926 transaction_abort(m);
1928 while ((j = hashmap_first(m->jobs)))
1929 job_finish_and_invalidate(j, JOB_CANCELED);
1932 unsigned manager_dispatch_run_queue(Manager *m) {
1936 if (m->dispatching_run_queue)
1939 m->dispatching_run_queue = true;
1941 while ((j = m->run_queue)) {
1942 assert(j->installed);
1943 assert(j->in_run_queue);
1945 job_run_and_invalidate(j);
1949 m->dispatching_run_queue = false;
1953 unsigned manager_dispatch_dbus_queue(Manager *m) {
1960 if (m->dispatching_dbus_queue)
1963 m->dispatching_dbus_queue = true;
1965 while ((u = m->dbus_unit_queue)) {
1966 assert(u->in_dbus_queue);
1968 bus_unit_send_change_signal(u);
1972 while ((j = m->dbus_job_queue)) {
1973 assert(j->in_dbus_queue);
1975 bus_job_send_change_signal(j);
1979 m->dispatching_dbus_queue = false;
1983 static int manager_process_notify_fd(Manager *m) {
1990 struct msghdr msghdr;
1992 struct ucred *ucred;
1994 struct cmsghdr cmsghdr;
1995 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
2001 iovec.iov_base = buf;
2002 iovec.iov_len = sizeof(buf)-1;
2006 msghdr.msg_iov = &iovec;
2007 msghdr.msg_iovlen = 1;
2008 msghdr.msg_control = &control;
2009 msghdr.msg_controllen = sizeof(control);
2011 if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 0) {
2015 if (errno == EAGAIN || errno == EINTR)
2021 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
2022 control.cmsghdr.cmsg_level != SOL_SOCKET ||
2023 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
2024 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
2025 log_warning("Received notify message without credentials. Ignoring.");
2029 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
2031 if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid))))
2032 if (!(u = cgroup_unit_by_pid(m, ucred->pid))) {
2033 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
2037 assert((size_t) n < sizeof(buf));
2039 if (!(tags = strv_split(buf, "\n\r")))
2042 log_debug("Got notification message for unit %s", u->id);
2044 if (UNIT_VTABLE(u)->notify_message)
2045 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
2053 static int manager_dispatch_sigchld(Manager *m) {
2063 /* First we call waitd() for a PID and do not reap the
2064 * zombie. That way we can still access /proc/$PID for
2065 * it while it is a zombie. */
2066 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
2068 if (errno == ECHILD)
2080 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
2083 get_process_comm(si.si_pid, &name);
2084 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
2088 /* Let's flush any message the dying child might still
2089 * have queued for us. This ensures that the process
2090 * still exists in /proc so that we can figure out
2091 * which cgroup and hence unit it belongs to. */
2092 if ((r = manager_process_notify_fd(m)) < 0)
2095 /* And now figure out the unit this belongs to */
2096 if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid))))
2097 u = cgroup_unit_by_pid(m, si.si_pid);
2099 /* And now, we actually reap the zombie. */
2100 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
2107 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
2110 log_debug("Child %lu died (code=%s, status=%i/%s)",
2111 (long unsigned) si.si_pid,
2112 sigchld_code_to_string(si.si_code),
2114 strna(si.si_code == CLD_EXITED
2115 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
2116 : signal_to_string(si.si_status)));
2121 log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
2123 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
2124 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
2130 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
2134 dbus_error_init(&error);
2136 log_debug("Activating special unit %s", name);
2138 if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0)
2139 log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r));
2141 dbus_error_free(&error);
2146 static int manager_process_signal_fd(Manager *m) {
2148 struct signalfd_siginfo sfsi;
2149 bool sigchld = false;
2154 if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) {
2159 if (errno == EINTR || errno == EAGAIN)
2165 if (sfsi.ssi_pid > 0) {
2168 get_process_comm(sfsi.ssi_pid, &p);
2170 log_debug("Received SIG%s from PID %lu (%s).",
2171 signal_to_string(sfsi.ssi_signo),
2172 (unsigned long) sfsi.ssi_pid, strna(p));
2175 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
2177 switch (sfsi.ssi_signo) {
2184 if (m->running_as == MANAGER_SYSTEM) {
2185 /* This is for compatibility with the
2186 * original sysvinit */
2187 m->exit_code = MANAGER_REEXECUTE;
2194 if (m->running_as == MANAGER_SYSTEM) {
2195 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
2199 /* Run the exit target if there is one, if not, just exit. */
2200 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
2201 m->exit_code = MANAGER_EXIT;
2208 if (m->running_as == MANAGER_SYSTEM)
2209 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
2211 /* This is a nop on non-init */
2215 if (m->running_as == MANAGER_SYSTEM)
2216 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
2218 /* This is a nop on non-init */
2224 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
2226 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
2227 log_info("Trying to reconnect to bus...");
2231 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
2232 log_info("Loading D-Bus service...");
2233 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
2244 if (!(f = open_memstream(&dump, &size))) {
2245 log_warning("Failed to allocate memory stream.");
2249 manager_dump_units(m, f, "\t");
2250 manager_dump_jobs(m, f, "\t");
2255 log_warning("Failed to write status stream");
2260 log_dump(LOG_INFO, dump);
2267 m->exit_code = MANAGER_RELOAD;
2272 /* Starting SIGRTMIN+0 */
2273 static const char * const target_table[] = {
2274 [0] = SPECIAL_DEFAULT_TARGET,
2275 [1] = SPECIAL_RESCUE_TARGET,
2276 [2] = SPECIAL_EMERGENCY_TARGET,
2277 [3] = SPECIAL_HALT_TARGET,
2278 [4] = SPECIAL_POWEROFF_TARGET,
2279 [5] = SPECIAL_REBOOT_TARGET,
2280 [6] = SPECIAL_KEXEC_TARGET
2283 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2284 static const ManagerExitCode code_table[] = {
2286 [1] = MANAGER_POWEROFF,
2287 [2] = MANAGER_REBOOT,
2291 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
2292 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
2293 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
2294 manager_start_target(m, target_table[idx],
2295 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
2299 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
2300 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
2301 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
2305 switch (sfsi.ssi_signo - SIGRTMIN) {
2308 log_debug("Enabling showing of status.");
2309 manager_set_show_status(m, true);
2313 log_debug("Disabling showing of status.");
2314 manager_set_show_status(m, false);
2318 log_set_max_level(LOG_DEBUG);
2319 log_notice("Setting log level to debug.");
2323 log_set_max_level(LOG_INFO);
2324 log_notice("Setting log level to info.");
2328 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2329 log_notice("Setting log target to journal-or-kmsg.");
2333 log_set_target(LOG_TARGET_CONSOLE);
2334 log_notice("Setting log target to console.");
2338 log_set_target(LOG_TARGET_KMSG);
2339 log_notice("Setting log target to kmsg.");
2343 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
2344 log_notice("Setting log target to syslog-or-kmsg.");
2348 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
2355 return manager_dispatch_sigchld(m);
2360 static int process_event(Manager *m, struct epoll_event *ev) {
2367 assert_se(w = ev->data.ptr);
2369 if (w->type == WATCH_INVALID)
2376 /* An incoming signal? */
2377 if (ev->events != EPOLLIN)
2380 if ((r = manager_process_signal_fd(m)) < 0)
2387 /* An incoming daemon notification event? */
2388 if (ev->events != EPOLLIN)
2391 if ((r = manager_process_notify_fd(m)) < 0)
2398 /* Some fd event, to be dispatched to the units */
2399 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
2402 case WATCH_UNIT_TIMER:
2403 case WATCH_JOB_TIMER: {
2407 /* Some timer event, to be dispatched to the units */
2408 if ((k = read(w->fd, &v, sizeof(v))) != sizeof(v)) {
2410 if (k < 0 && (errno == EINTR || errno == EAGAIN))
2413 return k < 0 ? -errno : -EIO;
2416 if (w->type == WATCH_UNIT_TIMER)
2417 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
2419 job_timer_event(w->data.job, v, w);
2424 /* Some mount table change, intended for the mount subsystem */
2425 mount_fd_event(m, ev->events);
2429 /* Some swap table change, intended for the swap subsystem */
2430 swap_fd_event(m, ev->events);
2434 /* Some notification from udev, intended for the device subsystem */
2435 device_fd_event(m, ev->events);
2438 case WATCH_DBUS_WATCH:
2439 bus_watch_event(m, w, ev->events);
2442 case WATCH_DBUS_TIMEOUT:
2443 bus_timeout_event(m, w, ev->events);
2447 log_error("event type=%i", w->type);
2448 assert_not_reached("Unknown epoll event type.");
2454 int manager_loop(Manager *m) {
2458 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
2461 m->exit_code = MANAGER_RUNNING;
2463 /* Release the path cache */
2464 set_free_free(m->unit_path_cache);
2465 m->unit_path_cache = NULL;
2467 manager_check_finished(m);
2469 /* There might still be some zombies hanging around from
2470 * before we were exec()'ed. Leat's reap them */
2471 r = manager_dispatch_sigchld(m);
2475 /* Sleep for half the watchdog time */
2476 if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) {
2477 wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
2482 while (m->exit_code == MANAGER_RUNNING) {
2483 struct epoll_event event;
2489 if (!ratelimit_test(&rl)) {
2490 /* Yay, something is going seriously wrong, pause a little */
2491 log_warning("Looping too fast. Throttling execution a little.");
2496 if (manager_dispatch_load_queue(m) > 0)
2499 if (manager_dispatch_run_queue(m) > 0)
2502 if (bus_dispatch(m) > 0)
2505 if (manager_dispatch_cleanup_queue(m) > 0)
2508 if (manager_dispatch_gc_queue(m) > 0)
2511 if (manager_dispatch_dbus_queue(m) > 0)
2514 if (swap_dispatch_reload(m) > 0)
2517 n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
2529 r = process_event(m, &event);
2534 return m->exit_code;
2537 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u) {
2545 if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
2548 if (!(n = bus_path_unescape(s+31)))
2551 u = manager_get_unit(m, n);
2562 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
2571 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
2574 if ((r = safe_atou(s + 30, &id)) < 0)
2577 if (!(j = manager_get_job(m, id)))
2585 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2590 if (m->audit_fd < 0)
2593 /* Don't generate audit events if the service was already
2594 * started and we're just deserializing */
2595 if (m->n_reloading > 0)
2598 if (m->running_as != MANAGER_SYSTEM)
2601 if (u->type != UNIT_SERVICE)
2604 if (!(p = unit_name_to_prefix_and_instance(u->id))) {
2605 log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
2609 if (audit_log_user_comm_message(m->audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
2610 log_warning("Failed to send audit message: %m");
2612 if (errno == EPERM) {
2613 /* We aren't allowed to send audit messages?
2614 * Then let's not retry again, to avoid
2615 * spamming the user with the same and same
2616 * messages over and over. */
2618 audit_close(m->audit_fd);
2628 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2630 union sockaddr_union sa;
2632 char *message = NULL;
2634 /* Don't generate plymouth events if the service was already
2635 * started and we're just deserializing */
2636 if (m->n_reloading > 0)
2639 if (m->running_as != MANAGER_SYSTEM)
2642 if (u->type != UNIT_SERVICE &&
2643 u->type != UNIT_MOUNT &&
2644 u->type != UNIT_SWAP)
2647 /* We set SOCK_NONBLOCK here so that we rather drop the
2648 * message then wait for plymouth */
2649 if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
2650 log_error("socket() failed: %m");
2655 sa.sa.sa_family = AF_UNIX;
2656 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
2657 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2659 if (errno != EPIPE &&
2662 errno != ECONNREFUSED &&
2663 errno != ECONNRESET &&
2664 errno != ECONNABORTED)
2665 log_error("connect() failed: %m");
2670 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2671 log_error("Out of memory");
2676 if (write(fd, message, n + 1) != n + 1) {
2678 if (errno != EPIPE &&
2681 errno != ECONNREFUSED &&
2682 errno != ECONNRESET &&
2683 errno != ECONNABORTED)
2684 log_error("Failed to write Plymouth message: %m");
2691 close_nointr_nofail(fd);
2696 void manager_dispatch_bus_name_owner_changed(
2699 const char* old_owner,
2700 const char *new_owner) {
2707 if (!(u = hashmap_get(m->watch_bus, name)))
2710 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2713 void manager_dispatch_bus_query_pid_done(
2724 if (!(u = hashmap_get(m->watch_bus, name)))
2727 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
2730 int manager_open_serialization(Manager *m, FILE **_f) {
2738 if (m->running_as == MANAGER_SYSTEM)
2739 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
2741 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
2746 saved_umask = umask(0077);
2747 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
2757 log_debug("Serializing state to %s", path);
2760 if (!(f = fdopen(fd, "w+")))
2768 int manager_serialize(Manager *m, FILE *f, FDSet *fds) {
2780 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2781 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2783 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2784 dual_timestamp_serialize(f, "startup-timestamp", &m->startup_timestamp);
2785 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2789 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2793 if (!unit_can_serialize(u))
2800 if ((r = unit_serialize(u, f, fds)) < 0) {
2806 assert(m->n_reloading > 0);
2812 r = bus_fdset_add_all(m, fds);
2819 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2825 log_debug("Deserializing state...");
2830 char line[LINE_MAX], *l;
2832 if (!fgets(line, sizeof(line), f)) {
2847 if (startswith(l, "current-job-id=")) {
2850 if (safe_atou32(l+15, &id) < 0)
2851 log_debug("Failed to parse current job id value %s", l+15);
2853 m->current_job_id = MAX(m->current_job_id, id);
2854 } else if (startswith(l, "taint-usr=")) {
2857 if ((b = parse_boolean(l+10)) < 0)
2858 log_debug("Failed to parse taint /usr flag %s", l+10);
2860 m->taint_usr = m->taint_usr || b;
2861 } else if (startswith(l, "initrd-timestamp="))
2862 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2863 else if (startswith(l, "startup-timestamp="))
2864 dual_timestamp_deserialize(l+18, &m->startup_timestamp);
2865 else if (startswith(l, "finish-timestamp="))
2866 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2868 log_debug("Unknown serialization item '%s'", l);
2873 char name[UNIT_NAME_MAX+2];
2876 if (!fgets(name, sizeof(name), f)) {
2887 if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0)
2890 if ((r = unit_deserialize(u, f, fds)) < 0)
2900 assert(m->n_reloading > 0);
2906 int manager_reload(Manager *m) {
2913 if ((r = manager_open_serialization(m, &f)) < 0)
2918 if (!(fds = fdset_new())) {
2924 if ((r = manager_serialize(m, f, fds)) < 0) {
2929 if (fseeko(f, 0, SEEK_SET) < 0) {
2935 /* From here on there is no way back. */
2936 manager_clear_jobs_and_units(m);
2937 manager_undo_generators(m);
2939 /* Find new unit paths */
2940 lookup_paths_free(&m->lookup_paths);
2941 if ((q = lookup_paths_init(&m->lookup_paths, m->running_as, true)) < 0)
2944 manager_run_generators(m);
2946 manager_build_unit_path_cache(m);
2948 /* First, enumerate what we can from all config files */
2949 if ((q = manager_enumerate(m)) < 0)
2952 /* Second, deserialize our stored data */
2953 if ((q = manager_deserialize(m, f, fds)) < 0)
2959 /* Third, fire things up! */
2960 if ((q = manager_coldplug(m)) < 0)
2963 assert(m->n_reloading > 0);
2976 bool manager_is_booting_or_shutting_down(Manager *m) {
2981 /* Is the initial job still around? */
2982 if (manager_get_job(m, m->default_unit_job_id))
2985 /* Is there a job for the shutdown target? */
2986 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2993 void manager_reset_failed(Manager *m) {
2999 HASHMAP_FOREACH(u, m->units, i)
3000 unit_reset_failed(u);
3003 bool manager_unit_pending_inactive(Manager *m, const char *name) {
3009 /* Returns true if the unit is inactive or going down */
3010 if (!(u = manager_get_unit(m, name)))
3013 return unit_pending_inactive(u);
3016 void manager_check_finished(Manager *m) {
3017 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
3018 usec_t kernel_usec = 0, initrd_usec = 0, userspace_usec = 0, total_usec = 0;
3022 if (dual_timestamp_is_set(&m->finish_timestamp))
3025 if (hashmap_size(m->jobs) > 0)
3028 dual_timestamp_get(&m->finish_timestamp);
3030 if (m->running_as == MANAGER_SYSTEM && detect_container(NULL) <= 0) {
3032 userspace_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic;
3033 total_usec = m->finish_timestamp.monotonic;
3035 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
3037 kernel_usec = m->initrd_timestamp.monotonic;
3038 initrd_usec = m->startup_timestamp.monotonic - m->initrd_timestamp.monotonic;
3040 log_info("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
3041 format_timespan(kernel, sizeof(kernel), kernel_usec),
3042 format_timespan(initrd, sizeof(initrd), initrd_usec),
3043 format_timespan(userspace, sizeof(userspace), userspace_usec),
3044 format_timespan(sum, sizeof(sum), total_usec));
3046 kernel_usec = m->startup_timestamp.monotonic;
3049 log_info("Startup finished in %s (kernel) + %s (userspace) = %s.",
3050 format_timespan(kernel, sizeof(kernel), kernel_usec),
3051 format_timespan(userspace, sizeof(userspace), userspace_usec),
3052 format_timespan(sum, sizeof(sum), total_usec));
3055 userspace_usec = initrd_usec = kernel_usec = 0;
3056 total_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic;
3058 log_debug("Startup finished in %s.",
3059 format_timespan(sum, sizeof(sum), total_usec));
3062 bus_broadcast_finished(m, kernel_usec, initrd_usec, userspace_usec, total_usec);
3065 "READY=1\nSTATUS=Startup finished in %s.",
3066 format_timespan(sum, sizeof(sum), total_usec));
3069 void manager_run_generators(Manager *m) {
3071 const char *generator_path;
3072 const char *argv[3];
3077 generator_path = m->running_as == MANAGER_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
3078 if (!(d = opendir(generator_path))) {
3080 if (errno == ENOENT)
3083 log_error("Failed to enumerate generator directory: %m");
3087 if (!m->generator_unit_path) {
3089 char user_path[] = "/tmp/systemd-generator-XXXXXX";
3091 if (m->running_as == MANAGER_SYSTEM && getpid() == 1) {
3092 p = "/run/systemd/generator";
3094 if (mkdir_p(p, 0755) < 0) {
3095 log_error("Failed to create generator directory: %m");
3100 if (!(p = mkdtemp(user_path))) {
3101 log_error("Failed to create generator directory: %m");
3106 if (!(m->generator_unit_path = strdup(p))) {
3107 log_error("Failed to allocate generator unit path.");
3112 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
3113 argv[1] = m->generator_unit_path;
3117 execute_directory(generator_path, d, (char**) argv);
3120 if (rmdir(m->generator_unit_path) >= 0) {
3121 /* Uh? we were able to remove this dir? I guess that
3122 * means the directory was empty, hence let's shortcut
3125 free(m->generator_unit_path);
3126 m->generator_unit_path = NULL;
3130 if (!strv_find(m->lookup_paths.unit_path, m->generator_unit_path)) {
3133 if (!(l = strv_append(m->lookup_paths.unit_path, m->generator_unit_path))) {
3134 log_error("Failed to add generator directory to unit search path: %m");
3138 strv_free(m->lookup_paths.unit_path);
3139 m->lookup_paths.unit_path = l;
3141 log_debug("Added generator unit path %s to search path.", m->generator_unit_path);
3149 void manager_undo_generators(Manager *m) {
3152 if (!m->generator_unit_path)
3155 strv_remove(m->lookup_paths.unit_path, m->generator_unit_path);
3156 rm_rf(m->generator_unit_path, false, true, false);
3158 free(m->generator_unit_path);
3159 m->generator_unit_path = NULL;
3162 int manager_set_default_controllers(Manager *m, char **controllers) {
3167 if (!(l = strv_copy(controllers)))
3170 strv_free(m->default_controllers);
3171 m->default_controllers = l;
3176 void manager_recheck_journal(Manager *m) {
3181 if (m->running_as != MANAGER_SYSTEM)
3184 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
3185 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
3186 log_close_journal();
3190 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
3191 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
3192 log_close_journal();
3196 /* Hmm, OK, so the socket is fully up and the service is up
3197 * too, then let's make use of the thing. */
3201 void manager_set_show_status(Manager *m, bool b) {
3204 if (m->running_as != MANAGER_SYSTEM)
3210 touch("/run/systemd/show-status");
3212 unlink("/run/systemd/show-status");
3215 bool manager_get_show_status(Manager *m) {
3218 if (m->running_as != MANAGER_SYSTEM)
3224 /* If Plymouth is running make sure we show the status, so
3225 * that there's something nice to see when people press Esc */
3227 return plymouth_running();
3230 static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
3231 [MANAGER_SYSTEM] = "system",
3232 [MANAGER_USER] = "user"
3235 DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs);