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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include <sys/reboot.h>
30 #include <sys/ioctl.h>
34 #include <sys/types.h>
37 #include <sys/timerfd.h>
43 #include "sd-daemon.h"
45 #include "sd-messages.h"
48 #include "transaction.h"
55 #include "ratelimit.h"
56 #include "locale-setup.h"
57 #include "mount-setup.h"
58 #include "unit-name.h"
60 #include "path-lookup.h"
62 #include "exit-status.h"
65 #include "cgroup-util.h"
66 #include "path-util.h"
68 #include "boot-timestamps.h"
70 #include "bus-errors.h"
71 #include "bus-error.h"
74 #include "dbus-unit.h"
76 #include "dbus-manager.h"
77 #include "bus-kernel.h"
78 #include "time-util.h"
80 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
81 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
83 /* Initial delay and the interval for printing status messages about running jobs */
84 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
85 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
86 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
88 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
89 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
90 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
91 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
92 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
93 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
95 static int manager_watch_jobs_in_progress(Manager *m) {
100 if (m->jobs_in_progress_event_source)
103 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
104 return sd_event_add_time(
106 &m->jobs_in_progress_event_source,
109 manager_dispatch_jobs_in_progress, m);
112 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
114 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
117 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
118 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
122 p = mempset(p, ' ', pos-2);
123 p = stpcpy(p, ANSI_RED_ON);
127 if (pos > 0 && pos <= width) {
128 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
132 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
135 p = stpcpy(p, ANSI_RED_ON);
138 p = mempset(p, ' ', width-1-pos);
139 strcpy(p, ANSI_HIGHLIGHT_OFF);
143 void manager_flip_auto_status(Manager *m, bool enable) {
147 if (m->show_status == SHOW_STATUS_AUTO)
148 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
150 if (m->show_status == SHOW_STATUS_TEMPORARY)
151 manager_set_show_status(m, SHOW_STATUS_AUTO);
155 static void manager_print_jobs_in_progress(Manager *m) {
156 _cleanup_free_ char *job_of_n = NULL;
159 unsigned counter = 0, print_nr;
160 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
162 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
167 manager_flip_auto_status(m, true);
169 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
171 HASHMAP_FOREACH(j, m->jobs, i)
172 if (j->state == JOB_RUNNING && counter++ == print_nr)
175 /* m->n_running_jobs must be consistent with the contents of m->jobs,
176 * so the above loop must have succeeded in finding j. */
177 assert(counter == print_nr + 1);
180 cylon_pos = m->jobs_in_progress_iteration % 14;
182 cylon_pos = 14 - cylon_pos;
183 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
185 m->jobs_in_progress_iteration++;
187 if (m->n_running_jobs > 1)
188 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
191 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
192 if (job_get_timeout(j, &x) > 0)
193 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
195 manager_status_printf(m, true, cylon,
196 "%sA %s job is running for %s (%s / %s)",
198 job_type_to_string(j->type),
199 unit_description(j->unit),
204 static int manager_watch_idle_pipe(Manager *m) {
209 if (m->idle_pipe_event_source)
212 if (m->idle_pipe[2] < 0)
215 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
217 log_error("Failed to watch idle pipe: %s", strerror(-r));
224 static void manager_close_idle_pipe(Manager *m) {
227 safe_close_pair(m->idle_pipe);
228 safe_close_pair(m->idle_pipe + 2);
231 static int manager_setup_time_change(Manager *m) {
234 /* We only care for the cancellation event, hence we set the
235 * timeout to the latest possible value. */
236 struct itimerspec its = {
237 .it_value.tv_sec = TIME_T_MAX,
241 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
246 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
247 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
249 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
250 if (m->time_change_fd < 0) {
251 log_error("Failed to create timerfd: %m");
255 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
256 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
257 m->time_change_fd = safe_close(m->time_change_fd);
261 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
263 log_error("Failed to create time change event source: %s", strerror(-r));
267 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
272 static int enable_special_signals(Manager *m) {
273 _cleanup_close_ int fd = -1;
277 /* Enable that we get SIGINT on control-alt-del. In containers
278 * this will fail with EPERM (older) or EINVAL (newer), so
280 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
281 log_warning("Failed to enable ctrl-alt-del handling: %m");
283 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
285 /* Support systems without virtual console */
287 log_warning("Failed to open /dev/tty0: %m");
289 /* Enable that we get SIGWINCH on kbrequest */
290 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
291 log_warning("Failed to enable kbrequest handling: %m");
297 static int manager_setup_signals(Manager *m) {
298 struct sigaction sa = {
299 .sa_handler = SIG_DFL,
300 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
310 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
312 /* We make liberal use of realtime signals here. On
313 * Linux/glibc we have 30 of them (with the exception of Linux
314 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
317 assert_se(sigemptyset(&mask) == 0);
318 sigset_add_many(&mask,
319 SIGCHLD, /* Child died */
320 SIGTERM, /* Reexecute daemon */
321 SIGHUP, /* Reload configuration */
322 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
323 SIGUSR2, /* systemd: dump status */
324 SIGINT, /* Kernel sends us this on control-alt-del */
325 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
326 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
328 SIGRTMIN+0, /* systemd: start default.target */
329 SIGRTMIN+1, /* systemd: isolate rescue.target */
330 SIGRTMIN+2, /* systemd: isolate emergency.target */
331 SIGRTMIN+3, /* systemd: start halt.target */
332 SIGRTMIN+4, /* systemd: start poweroff.target */
333 SIGRTMIN+5, /* systemd: start reboot.target */
334 SIGRTMIN+6, /* systemd: start kexec.target */
336 /* ... space for more special targets ... */
338 SIGRTMIN+13, /* systemd: Immediate halt */
339 SIGRTMIN+14, /* systemd: Immediate poweroff */
340 SIGRTMIN+15, /* systemd: Immediate reboot */
341 SIGRTMIN+16, /* systemd: Immediate kexec */
343 /* ... space for more immediate system state changes ... */
345 SIGRTMIN+20, /* systemd: enable status messages */
346 SIGRTMIN+21, /* systemd: disable status messages */
347 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
348 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
349 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
351 /* .. one free signal here ... */
353 #if !defined(__hppa64__) && !defined(__hppa__)
354 /* Apparently Linux on hppa has fewer RT
355 * signals (SIGRTMAX is SIGRTMIN+25 there),
356 * hence let's not try to make use of them
357 * here. Since these commands are accessible
358 * by different means and only really a safety
359 * net, the missing functionality on hppa
360 * shouldn't matter. */
362 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
363 SIGRTMIN+27, /* systemd: set log target to console */
364 SIGRTMIN+28, /* systemd: set log target to kmsg */
365 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete)*/
367 /* ... one free signal here SIGRTMIN+30 ... */
370 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
372 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
373 if (m->signal_fd < 0)
376 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
380 /* Process signals a bit earlier than the rest of things, but
381 * later than notify_fd processing, so that the notify
382 * processing can still figure out to which process/service a
383 * message belongs, before we reap the process. */
384 r = sd_event_source_set_priority(m->signal_event_source, -5);
388 if (m->running_as == SYSTEMD_SYSTEM)
389 return enable_special_signals(m);
394 static void manager_clean_environment(Manager *m) {
397 /* Let's remove some environment variables that we
398 * need ourselves to communicate with our clients */
411 static int manager_default_environment(Manager *m) {
414 if (m->running_as == SYSTEMD_SYSTEM) {
415 /* The system manager always starts with a clean
416 * environment for its children. It does not import
417 * the kernel or the parents exported variables.
419 * The initial passed environ is untouched to keep
420 * /proc/self/environ valid; it is used for tagging
421 * the init process inside containers. */
422 m->environment = strv_new("PATH=" DEFAULT_PATH,
425 /* Import locale variables LC_*= from configuration */
426 locale_setup(&m->environment);
428 /* The user manager passes its own environment
429 * along to its children. */
430 m->environment = strv_copy(environ);
436 manager_clean_environment(m);
437 strv_sort(m->environment);
442 int manager_new(SystemdRunningAs running_as, bool test_run, Manager **_m) {
447 assert(running_as >= 0);
448 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
450 m = new0(Manager, 1);
455 if (running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
456 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
459 m->running_as = running_as;
460 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
461 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
462 m->start_timeout_usec = DEFAULT_MANAGER_START_TIMEOUT_USEC;
463 m->start_timeout_action = FAILURE_ACTION_POWEROFF_FORCE;
465 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
467 m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = -1;
468 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
470 m->test_run = test_run;
472 r = manager_default_environment(m);
476 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
480 r = hashmap_ensure_allocated(&m->jobs, NULL);
484 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
488 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
492 r = set_ensure_allocated(&m->startup_units, NULL);
496 r = set_ensure_allocated(&m->failed_units, NULL);
500 r = sd_event_default(&m->event);
504 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
508 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
512 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
516 r = manager_setup_signals(m);
520 r = manager_setup_cgroup(m);
524 r = manager_setup_time_change(m);
528 m->udev = udev_new();
534 /* Note that we set up neither kdbus, nor the notify fd
535 * here. We do that after deserialization, since they might
536 * have gotten serialized across the reexec. */
538 m->taint_usr = dir_is_empty("/usr") > 0;
548 static int manager_setup_notify(Manager *m) {
554 if (m->notify_fd < 0) {
555 _cleanup_close_ int fd = -1;
556 union sockaddr_union sa = {
557 .sa.sa_family = AF_UNIX,
559 static const int one = 1;
561 /* First free all secondary fields */
562 free(m->notify_socket);
563 m->notify_socket = NULL;
564 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
566 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
568 log_error("Failed to allocate notification socket: %m");
572 if (m->running_as == SYSTEMD_SYSTEM)
573 m->notify_socket = strdup("/run/systemd/notify");
577 e = getenv("XDG_RUNTIME_DIR");
579 log_error("XDG_RUNTIME_DIR is not set: %m");
583 m->notify_socket = strappend(e, "/systemd/notify");
585 if (!m->notify_socket)
588 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
589 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
591 log_error("bind(%s) failed: %m", sa.un.sun_path);
592 if (errno == EADDRINUSE) {
593 log_notice("Removing %s socket and trying again.", m->notify_socket);
594 r = unlink(m->notify_socket);
596 log_error("Failed to remove %s: %m", m->notify_socket);
600 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
602 log_error("bind(%s) failed: %m", sa.un.sun_path);
609 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
611 log_error("SO_PASSCRED failed: %m");
618 log_debug("Using notification socket %s", m->notify_socket);
621 if (!m->notify_event_source) {
622 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
624 log_error("Failed to allocate notify event source: %s", strerror(-r));
628 /* Process signals a bit earlier than SIGCHLD, so that we can
629 * still identify to which service an exit message belongs */
630 r = sd_event_source_set_priority(m->notify_event_source, -7);
632 log_error("Failed to set priority of notify event source: %s", strerror(-r));
640 static int manager_setup_kdbus(Manager *m) {
642 _cleanup_free_ char *p = NULL;
646 if (m->test_run || m->kdbus_fd >= 0)
649 m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", m->running_as == SYSTEMD_SYSTEM, &p);
650 if (m->kdbus_fd < 0) {
651 log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd));
655 log_debug("Successfully set up kdbus on %s", p);
657 /* Create the namespace directory here, so that the contents
658 * of that directory is not visible to non-root users. This is
659 * necessary to ensure that users cannot get access to busses
660 * of virtualized users when no UID namespacing is used. */
661 if (m->running_as == SYSTEMD_SYSTEM)
662 mkdir_p_label("/dev/kdbus/domain", 0700);
668 static int manager_connect_bus(Manager *m, bool reexecuting) {
669 bool try_bus_connect;
679 (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
681 /* Try to connect to the busses, if possible. */
682 return bus_init(m, try_bus_connect);
685 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
691 while ((u = m->cleanup_queue)) {
692 assert(u->in_cleanup_queue);
702 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
703 GC_OFFSET_UNSURE, /* No clue */
704 GC_OFFSET_GOOD, /* We still need this unit */
705 GC_OFFSET_BAD, /* We don't need this unit anymore */
709 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
716 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
717 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
718 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
721 if (u->in_cleanup_queue)
724 if (unit_check_gc(u))
727 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
731 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
732 unit_gc_sweep(other, gc_marker);
734 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
737 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
744 /* We were unable to find anything out about this entry, so
745 * let's investigate it later */
746 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
747 unit_add_to_gc_queue(u);
751 /* We definitely know that this one is not useful anymore, so
752 * let's mark it for deletion */
753 u->gc_marker = gc_marker + GC_OFFSET_BAD;
754 unit_add_to_cleanup_queue(u);
758 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
761 static unsigned manager_dispatch_gc_queue(Manager *m) {
768 /* log_debug("Running GC..."); */
770 m->gc_marker += _GC_OFFSET_MAX;
771 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
774 gc_marker = m->gc_marker;
776 while ((u = m->gc_queue)) {
777 assert(u->in_gc_queue);
779 unit_gc_sweep(u, gc_marker);
781 LIST_REMOVE(gc_queue, m->gc_queue, u);
782 u->in_gc_queue = false;
786 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
787 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
788 log_debug_unit(u->id, "Collecting %s", u->id);
789 u->gc_marker = gc_marker + GC_OFFSET_BAD;
790 unit_add_to_cleanup_queue(u);
794 m->n_in_gc_queue = 0;
799 static void manager_clear_jobs_and_units(Manager *m) {
804 while ((u = hashmap_first(m->units)))
807 manager_dispatch_cleanup_queue(m);
809 assert(!m->load_queue);
810 assert(!m->run_queue);
811 assert(!m->dbus_unit_queue);
812 assert(!m->dbus_job_queue);
813 assert(!m->cleanup_queue);
814 assert(!m->gc_queue);
816 assert(hashmap_isempty(m->jobs));
817 assert(hashmap_isempty(m->units));
820 m->n_running_jobs = 0;
823 void manager_free(Manager *m) {
829 manager_clear_jobs_and_units(m);
831 for (c = 0; c < _UNIT_TYPE_MAX; c++)
832 if (unit_vtable[c]->shutdown)
833 unit_vtable[c]->shutdown(m);
835 /* If we reexecute ourselves, we keep the root cgroup
837 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
839 manager_undo_generators(m);
843 hashmap_free(m->units);
844 hashmap_free(m->jobs);
845 hashmap_free(m->watch_pids1);
846 hashmap_free(m->watch_pids2);
847 hashmap_free(m->watch_bus);
849 set_free(m->startup_units);
850 set_free(m->failed_units);
852 sd_event_source_unref(m->signal_event_source);
853 sd_event_source_unref(m->notify_event_source);
854 sd_event_source_unref(m->time_change_event_source);
855 sd_event_source_unref(m->jobs_in_progress_event_source);
856 sd_event_source_unref(m->idle_pipe_event_source);
857 sd_event_source_unref(m->run_queue_event_source);
859 safe_close(m->signal_fd);
860 safe_close(m->notify_fd);
861 safe_close(m->time_change_fd);
862 safe_close(m->kdbus_fd);
864 manager_close_idle_pipe(m);
866 sd_event_source_unref(m->start_timeout_event_source);
867 free(m->start_timeout_reboot_arg);
870 sd_event_unref(m->event);
872 free(m->notify_socket);
874 lookup_paths_free(&m->lookup_paths);
875 strv_free(m->environment);
877 hashmap_free(m->cgroup_unit);
878 set_free_free(m->unit_path_cache);
880 free(m->switch_root);
881 free(m->switch_root_init);
883 for (i = 0; i < _RLIMIT_MAX; i++)
886 assert(hashmap_isempty(m->units_requiring_mounts_for));
887 hashmap_free(m->units_requiring_mounts_for);
892 int manager_enumerate(Manager *m) {
898 /* Let's ask every type to load all units from disk/kernel
899 * that it might know */
900 for (c = 0; c < _UNIT_TYPE_MAX; c++)
901 if (unit_vtable[c]->enumerate) {
902 q = unit_vtable[c]->enumerate(m);
907 manager_dispatch_load_queue(m);
911 static int manager_coldplug(Manager *m) {
919 /* Then, let's set up their initial state. */
920 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
927 q = unit_coldplug(u);
935 static void manager_build_unit_path_cache(Manager *m) {
937 _cleanup_closedir_ DIR *d = NULL;
942 set_free_free(m->unit_path_cache);
944 m->unit_path_cache = set_new(&string_hash_ops);
945 if (!m->unit_path_cache) {
946 log_error("Failed to allocate unit path cache.");
950 /* This simply builds a list of files we know exist, so that
951 * we don't always have to go to disk */
953 STRV_FOREACH(i, m->lookup_paths.unit_path) {
959 log_error("Failed to open directory %s: %m", *i);
963 while ((de = readdir(d))) {
966 if (ignore_file(de->d_name))
969 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
975 r = set_consume(m->unit_path_cache, p);
987 log_error("Failed to build unit path cache: %s", strerror(-r));
989 set_free_free(m->unit_path_cache);
990 m->unit_path_cache = NULL;
994 static int manager_distribute_fds(Manager *m, FDSet *fds) {
1001 HASHMAP_FOREACH(u, m->units, i) {
1003 if (fdset_size(fds) <= 0)
1006 if (UNIT_VTABLE(u)->distribute_fds) {
1007 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
1016 static int on_start_timeout(sd_event_source *s, usec_t usec, void *userdata) {
1017 Manager *m = userdata;
1022 m->start_timeout_event_source = sd_event_source_unref(m->start_timeout_event_source);
1024 log_error("Startup timed out.");
1026 failure_action(m, m->start_timeout_action, m->start_timeout_reboot_arg);
1030 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1035 dual_timestamp_get(&m->generators_start_timestamp);
1036 manager_run_generators(m);
1037 dual_timestamp_get(&m->generators_finish_timestamp);
1039 r = lookup_paths_init(
1040 &m->lookup_paths, m->running_as, true,
1042 m->generator_unit_path,
1043 m->generator_unit_path_early,
1044 m->generator_unit_path_late);
1048 manager_build_unit_path_cache(m);
1050 /* If we will deserialize make sure that during enumeration
1051 * this is already known, so we increase the counter here
1056 /* First, enumerate what we can from all config files */
1057 dual_timestamp_get(&m->units_load_start_timestamp);
1058 r = manager_enumerate(m);
1059 dual_timestamp_get(&m->units_load_finish_timestamp);
1061 /* Second, deserialize if there is something to deserialize */
1063 r = manager_deserialize(m, serialization, fds);
1065 /* Any fds left? Find some unit which wants them. This is
1066 * useful to allow container managers to pass some file
1067 * descriptors to us pre-initialized. This enables
1068 * socket-based activation of entire containers. */
1069 if (fdset_size(fds) > 0) {
1070 q = manager_distribute_fds(m, fds);
1071 if (q < 0 && r == 0)
1075 /* We might have deserialized the notify fd, but if we didn't
1076 * then let's create the bus now */
1077 q = manager_setup_notify(m);
1078 if (q < 0 && r == 0)
1081 /* We might have deserialized the kdbus control fd, but if we
1082 * didn't, then let's create the bus now. */
1083 manager_setup_kdbus(m);
1084 manager_connect_bus(m, !!serialization);
1085 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
1087 /* Third, fire things up! */
1088 q = manager_coldplug(m);
1089 if (q < 0 && r == 0)
1092 if (serialization) {
1093 assert(m->n_reloading > 0);
1096 /* Let's wait for the UnitNew/JobNew messages being
1097 * sent, before we notify that the reload is
1099 m->send_reloading_done = true;
1102 /* Possibly set up a start timeout */
1103 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
1104 m->start_timeout_event_source = sd_event_source_unref(m->start_timeout_event_source);
1106 if (m->start_timeout_usec) {
1107 r = sd_event_add_time(
1109 &m->start_timeout_event_source,
1111 now(CLOCK_MONOTONIC) + m->start_timeout_usec, 0,
1112 on_start_timeout, m);
1114 log_error("Failed to add start timeout event: %s", strerror(-r));
1121 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1126 assert(type < _JOB_TYPE_MAX);
1128 assert(mode < _JOB_MODE_MAX);
1130 if (mode == JOB_ISOLATE && type != JOB_START) {
1131 sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
1135 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
1136 sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
1140 log_debug_unit(unit->id,
1141 "Trying to enqueue job %s/%s/%s", unit->id,
1142 job_type_to_string(type), job_mode_to_string(mode));
1144 job_type_collapse(&type, unit);
1146 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
1150 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
1151 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1152 mode == JOB_IGNORE_DEPENDENCIES, e);
1156 if (mode == JOB_ISOLATE) {
1157 r = transaction_add_isolate_jobs(tr, m);
1162 r = transaction_activate(tr, m, mode, e);
1166 log_debug_unit(unit->id,
1167 "Enqueued job %s/%s as %u", unit->id,
1168 job_type_to_string(type), (unsigned) tr->anchor_job->id);
1171 *_ret = tr->anchor_job;
1173 transaction_free(tr);
1177 transaction_abort(tr);
1178 transaction_free(tr);
1182 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1187 assert(type < _JOB_TYPE_MAX);
1189 assert(mode < _JOB_MODE_MAX);
1191 r = manager_load_unit(m, name, NULL, NULL, &unit);
1195 return manager_add_job(m, type, unit, mode, override, e, _ret);
1198 Job *manager_get_job(Manager *m, uint32_t id) {
1201 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1204 Unit *manager_get_unit(Manager *m, const char *name) {
1208 return hashmap_get(m->units, name);
1211 unsigned manager_dispatch_load_queue(Manager *m) {
1217 /* Make sure we are not run recursively */
1218 if (m->dispatching_load_queue)
1221 m->dispatching_load_queue = true;
1223 /* Dispatches the load queue. Takes a unit from the queue and
1224 * tries to load its data until the queue is empty */
1226 while ((u = m->load_queue)) {
1227 assert(u->in_load_queue);
1233 m->dispatching_load_queue = false;
1237 int manager_load_unit_prepare(
1249 assert(name || path);
1251 /* This will prepare the unit for loading, but not actually
1252 * load anything from disk. */
1254 if (path && !is_path(path))
1255 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
1258 name = basename(path);
1260 t = unit_name_to_type(name);
1262 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID))
1263 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
1265 ret = manager_get_unit(m, name);
1271 ret = unit_new(m, unit_vtable[t]->object_size);
1276 ret->fragment_path = strdup(path);
1277 if (!ret->fragment_path) {
1283 r = unit_add_name(ret, name);
1289 unit_add_to_load_queue(ret);
1290 unit_add_to_dbus_queue(ret);
1291 unit_add_to_gc_queue(ret);
1299 int manager_load_unit(
1310 /* This will load the service information files, but not actually
1311 * start any services or anything. */
1313 r = manager_load_unit_prepare(m, name, path, e, _ret);
1317 manager_dispatch_load_queue(m);
1320 *_ret = unit_follow_merge(*_ret);
1325 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1332 HASHMAP_FOREACH(j, s->jobs, i)
1333 job_dump(j, f, prefix);
1336 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1344 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1346 unit_dump(u, f, prefix);
1349 void manager_clear_jobs(Manager *m) {
1354 while ((j = hashmap_first(m->jobs)))
1355 /* No need to recurse. We're cancelling all jobs. */
1356 job_finish_and_invalidate(j, JOB_CANCELED, false);
1359 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1360 Manager *m = userdata;
1366 while ((j = m->run_queue)) {
1367 assert(j->installed);
1368 assert(j->in_run_queue);
1370 job_run_and_invalidate(j);
1373 if (m->n_running_jobs > 0)
1374 manager_watch_jobs_in_progress(m);
1376 if (m->n_on_console > 0)
1377 manager_watch_idle_pipe(m);
1382 static unsigned manager_dispatch_dbus_queue(Manager *m) {
1389 if (m->dispatching_dbus_queue)
1392 m->dispatching_dbus_queue = true;
1394 while ((u = m->dbus_unit_queue)) {
1395 assert(u->in_dbus_queue);
1397 bus_unit_send_change_signal(u);
1401 while ((j = m->dbus_job_queue)) {
1402 assert(j->in_dbus_queue);
1404 bus_job_send_change_signal(j);
1408 m->dispatching_dbus_queue = false;
1410 if (m->send_reloading_done) {
1411 m->send_reloading_done = false;
1413 bus_manager_send_reloading(m, false);
1416 if (m->queued_message)
1417 bus_send_queued_message(m);
1422 static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) {
1423 _cleanup_strv_free_ char **tags = NULL;
1430 tags = strv_split(buf, "\n\r");
1436 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1438 if (UNIT_VTABLE(u)->notify_message)
1439 UNIT_VTABLE(u)->notify_message(u, pid, tags);
1442 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1443 Manager *m = userdata;
1447 assert(m->notify_fd == fd);
1449 if (revents != EPOLLIN) {
1450 log_warning("Got unexpected poll event for notify fd.");
1456 struct iovec iovec = {
1458 .iov_len = sizeof(buf)-1,
1463 struct cmsghdr cmsghdr;
1464 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1467 struct msghdr msghdr = {
1470 .msg_control = &control,
1471 .msg_controllen = sizeof(control),
1473 struct ucred *ucred;
1476 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
1481 if (errno == EAGAIN || errno == EINTR)
1487 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1488 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1489 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1490 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1491 log_warning("Received notify message without credentials. Ignoring.");
1495 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1497 assert((size_t) n < sizeof(buf));
1500 /* Notify every unit that might be interested, but try
1501 * to avoid notifying the same one multiple times. */
1502 u1 = manager_get_unit_by_pid(m, ucred->pid);
1504 manager_invoke_notify_message(m, u1, ucred->pid, buf, n);
1508 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
1509 if (u2 && u2 != u1) {
1510 manager_invoke_notify_message(m, u2, ucred->pid, buf, n);
1514 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
1515 if (u3 && u3 != u2 && u3 != u1) {
1516 manager_invoke_notify_message(m, u3, ucred->pid, buf, n);
1521 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
1527 static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
1532 log_debug_unit(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
1534 unit_unwatch_pid(u, si->si_pid);
1535 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1538 static int manager_dispatch_sigchld(Manager *m) {
1544 /* First we call waitd() for a PID and do not reap the
1545 * zombie. That way we can still access /proc/$PID for
1546 * it while it is a zombie. */
1547 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1549 if (errno == ECHILD)
1561 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1562 _cleanup_free_ char *name = NULL;
1565 get_process_comm(si.si_pid, &name);
1567 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1568 si.si_pid, strna(name),
1569 sigchld_code_to_string(si.si_code),
1571 strna(si.si_code == CLD_EXITED
1572 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1573 : signal_to_string(si.si_status)));
1575 /* And now figure out the unit this belongs
1576 * to, it might be multiple... */
1577 u1 = manager_get_unit_by_pid(m, si.si_pid);
1579 invoke_sigchld_event(m, u1, &si);
1580 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid));
1582 invoke_sigchld_event(m, u2, &si);
1583 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid));
1584 if (u3 && u3 != u2 && u3 != u1)
1585 invoke_sigchld_event(m, u3, &si);
1588 /* And now, we actually reap the zombie. */
1589 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1600 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1601 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1604 log_debug_unit(name, "Activating special unit %s", name);
1606 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1608 log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
1613 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1614 Manager *m = userdata;
1616 struct signalfd_siginfo sfsi;
1617 bool sigchld = false;
1620 assert(m->signal_fd == fd);
1622 if (revents != EPOLLIN) {
1623 log_warning("Got unexpected events from signal file descriptor.");
1628 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
1629 if (n != sizeof(sfsi)) {
1634 if (errno == EINTR || errno == EAGAIN)
1640 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
1641 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
1642 ? LOG_DEBUG : LOG_INFO,
1645 switch (sfsi.ssi_signo) {
1652 if (m->running_as == SYSTEMD_SYSTEM) {
1653 /* This is for compatibility with the
1654 * original sysvinit */
1655 m->exit_code = MANAGER_REEXECUTE;
1662 if (m->running_as == SYSTEMD_SYSTEM) {
1663 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1667 /* Run the exit target if there is one, if not, just exit. */
1668 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1669 m->exit_code = MANAGER_EXIT;
1676 if (m->running_as == SYSTEMD_SYSTEM)
1677 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1679 /* This is a nop on non-init */
1683 if (m->running_as == SYSTEMD_SYSTEM)
1684 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1686 /* This is a nop on non-init */
1692 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1694 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1695 log_info("Trying to reconnect to bus...");
1699 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1700 log_info("Loading D-Bus service...");
1701 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1708 _cleanup_free_ char *dump = NULL;
1709 _cleanup_fclose_ FILE *f = NULL;
1712 f = open_memstream(&dump, &size);
1714 log_warning("Failed to allocate memory stream.");
1718 manager_dump_units(m, f, "\t");
1719 manager_dump_jobs(m, f, "\t");
1722 log_warning("Failed to write status stream");
1727 log_warning("Failed to flush status stream");
1731 log_dump(LOG_INFO, dump);
1736 m->exit_code = MANAGER_RELOAD;
1741 /* Starting SIGRTMIN+0 */
1742 static const char * const target_table[] = {
1743 [0] = SPECIAL_DEFAULT_TARGET,
1744 [1] = SPECIAL_RESCUE_TARGET,
1745 [2] = SPECIAL_EMERGENCY_TARGET,
1746 [3] = SPECIAL_HALT_TARGET,
1747 [4] = SPECIAL_POWEROFF_TARGET,
1748 [5] = SPECIAL_REBOOT_TARGET,
1749 [6] = SPECIAL_KEXEC_TARGET
1752 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1753 static const ManagerExitCode code_table[] = {
1755 [1] = MANAGER_POWEROFF,
1756 [2] = MANAGER_REBOOT,
1760 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1761 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1762 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1763 manager_start_target(m, target_table[idx],
1764 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1768 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1769 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1770 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1774 switch (sfsi.ssi_signo - SIGRTMIN) {
1777 log_debug("Enabling showing of status.");
1778 manager_set_show_status(m, SHOW_STATUS_YES);
1782 log_debug("Disabling showing of status.");
1783 manager_set_show_status(m, SHOW_STATUS_NO);
1787 log_set_max_level(LOG_DEBUG);
1788 log_notice("Setting log level to debug.");
1792 log_set_max_level(LOG_INFO);
1793 log_notice("Setting log level to info.");
1797 if (m->running_as == SYSTEMD_USER) {
1798 m->exit_code = MANAGER_EXIT;
1802 /* This is a nop on init */
1806 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1807 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1808 log_notice("Setting log target to journal-or-kmsg.");
1812 log_set_target(LOG_TARGET_CONSOLE);
1813 log_notice("Setting log target to console.");
1817 log_set_target(LOG_TARGET_KMSG);
1818 log_notice("Setting log target to kmsg.");
1822 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1829 manager_dispatch_sigchld(m);
1834 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1835 Manager *m = userdata;
1840 assert(m->time_change_fd == fd);
1842 log_struct(LOG_INFO,
1843 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1844 "MESSAGE=Time has been changed",
1847 /* Restart the watch */
1848 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
1849 m->time_change_fd = safe_close(m->time_change_fd);
1851 manager_setup_time_change(m);
1853 HASHMAP_FOREACH(u, m->units, i)
1854 if (UNIT_VTABLE(u)->time_change)
1855 UNIT_VTABLE(u)->time_change(u);
1860 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1861 Manager *m = userdata;
1864 assert(m->idle_pipe[2] == fd);
1866 m->no_console_output = m->n_on_console > 0;
1868 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
1869 manager_close_idle_pipe(m);
1874 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1875 Manager *m = userdata;
1882 manager_print_jobs_in_progress(m);
1884 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1885 r = sd_event_source_set_time(source, next);
1889 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
1892 int manager_loop(Manager *m) {
1895 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1898 m->exit_code = MANAGER_OK;
1900 /* Release the path cache */
1901 set_free_free(m->unit_path_cache);
1902 m->unit_path_cache = NULL;
1904 manager_check_finished(m);
1906 /* There might still be some zombies hanging around from
1907 * before we were exec()'ed. Let's reap them. */
1908 r = manager_dispatch_sigchld(m);
1912 while (m->exit_code == MANAGER_OK) {
1915 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1918 if (!ratelimit_test(&rl)) {
1919 /* Yay, something is going seriously wrong, pause a little */
1920 log_warning("Looping too fast. Throttling execution a little.");
1925 if (manager_dispatch_load_queue(m) > 0)
1928 if (manager_dispatch_gc_queue(m) > 0)
1931 if (manager_dispatch_cleanup_queue(m) > 0)
1934 if (manager_dispatch_cgroup_queue(m) > 0)
1937 if (manager_dispatch_dbus_queue(m) > 0)
1940 /* Sleep for half the watchdog time */
1941 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1942 wait_usec = m->runtime_watchdog / 2;
1946 wait_usec = USEC_INFINITY;
1948 r = sd_event_run(m->event, wait_usec);
1950 log_error("Failed to run event loop: %s", strerror(-r));
1955 return m->exit_code;
1958 int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
1959 _cleanup_free_ char *n = NULL;
1967 r = unit_name_from_dbus_path(s, &n);
1971 r = manager_load_unit(m, n, NULL, e, &u);
1980 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1990 p = startswith(s, "/org/freedesktop/systemd1/job/");
1994 r = safe_atou(p, &id);
1998 j = manager_get_job(m, id);
2007 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2010 _cleanup_free_ char *p = NULL;
2013 audit_fd = get_audit_fd();
2017 /* Don't generate audit events if the service was already
2018 * started and we're just deserializing */
2019 if (m->n_reloading > 0)
2022 if (m->running_as != SYSTEMD_SYSTEM)
2025 if (u->type != UNIT_SERVICE)
2028 p = unit_name_to_prefix_and_instance(u->id);
2030 log_error_unit(u->id,
2031 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
2035 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
2036 if (errno == EPERM) {
2037 /* We aren't allowed to send audit messages?
2038 * Then let's not retry again. */
2041 log_warning("Failed to send audit message: %m");
2047 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2048 union sockaddr_union sa = PLYMOUTH_SOCKET;
2051 _cleanup_free_ char *message = NULL;
2052 _cleanup_close_ int fd = -1;
2054 /* Don't generate plymouth events if the service was already
2055 * started and we're just deserializing */
2056 if (m->n_reloading > 0)
2059 if (m->running_as != SYSTEMD_SYSTEM)
2062 if (detect_container(NULL) > 0)
2065 if (u->type != UNIT_SERVICE &&
2066 u->type != UNIT_MOUNT &&
2067 u->type != UNIT_SWAP)
2070 /* We set SOCK_NONBLOCK here so that we rather drop the
2071 * message then wait for plymouth */
2072 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2074 log_error("socket() failed: %m");
2078 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2080 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2081 log_error("connect() failed: %m");
2085 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2091 if (write(fd, message, n + 1) != n + 1)
2092 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2093 log_error("Failed to write Plymouth message: %m");
2096 void manager_dispatch_bus_name_owner_changed(
2099 const char* old_owner,
2100 const char *new_owner) {
2107 u = hashmap_get(m->watch_bus, name);
2111 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2114 int manager_open_serialization(Manager *m, FILE **_f) {
2121 path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
2122 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
2126 log_debug("Serializing state to %s", path);
2128 f = fdopen(fd, "w+");
2139 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2152 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2153 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2154 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2155 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2157 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2158 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2159 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2160 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2163 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2164 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2165 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2166 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2167 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2168 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2169 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2170 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2173 if (!switching_root) {
2174 STRV_FOREACH(e, m->environment) {
2175 _cleanup_free_ char *ce;
2181 fprintf(f, "env=%s\n", *e);
2185 if (m->notify_fd >= 0) {
2188 copy = fdset_put_dup(fds, m->notify_fd);
2192 fprintf(f, "notify-fd=%i\n", copy);
2193 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2196 if (m->kdbus_fd >= 0) {
2199 copy = fdset_put_dup(fds, m->kdbus_fd);
2203 fprintf(f, "kdbus-fd=%i\n", copy);
2206 bus_track_serialize(m->subscribed, f);
2210 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2218 r = unit_serialize(u, f, fds, !switching_root);
2225 assert(m->n_reloading > 0);
2231 r = bus_fdset_add_all(m, fds);
2238 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2244 log_debug("Deserializing state...");
2249 char line[LINE_MAX], *l;
2251 if (!fgets(line, sizeof(line), f)) {
2266 if (startswith(l, "current-job-id=")) {
2269 if (safe_atou32(l+15, &id) < 0)
2270 log_warning("Failed to parse current job id value %s", l+15);
2272 m->current_job_id = MAX(m->current_job_id, id);
2274 } else if (startswith(l, "n-installed-jobs=")) {
2277 if (safe_atou32(l+17, &n) < 0)
2278 log_warning("Failed to parse installed jobs counter %s", l+17);
2280 m->n_installed_jobs += n;
2282 } else if (startswith(l, "n-failed-jobs=")) {
2285 if (safe_atou32(l+14, &n) < 0)
2286 log_warning("Failed to parse failed jobs counter %s", l+14);
2288 m->n_failed_jobs += n;
2290 } else if (startswith(l, "taint-usr=")) {
2293 b = parse_boolean(l+10);
2295 log_warning("Failed to parse taint /usr flag %s", l+10);
2297 m->taint_usr = m->taint_usr || b;
2299 } else if (startswith(l, "firmware-timestamp="))
2300 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2301 else if (startswith(l, "loader-timestamp="))
2302 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2303 else if (startswith(l, "kernel-timestamp="))
2304 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2305 else if (startswith(l, "initrd-timestamp="))
2306 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2307 else if (startswith(l, "userspace-timestamp="))
2308 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2309 else if (startswith(l, "finish-timestamp="))
2310 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2311 else if (startswith(l, "security-start-timestamp="))
2312 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2313 else if (startswith(l, "security-finish-timestamp="))
2314 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2315 else if (startswith(l, "generators-start-timestamp="))
2316 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2317 else if (startswith(l, "generators-finish-timestamp="))
2318 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2319 else if (startswith(l, "units-load-start-timestamp="))
2320 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2321 else if (startswith(l, "units-load-finish-timestamp="))
2322 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2323 else if (startswith(l, "env=")) {
2324 _cleanup_free_ char *uce = NULL;
2327 uce = cunescape(l+4);
2333 e = strv_env_set(m->environment, uce);
2339 strv_free(m->environment);
2342 } else if (startswith(l, "notify-fd=")) {
2345 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2346 log_warning("Failed to parse notify fd: %s", l + 10);
2348 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2349 safe_close(m->notify_fd);
2350 m->notify_fd = fdset_remove(fds, fd);
2353 } else if (startswith(l, "notify-socket=")) {
2362 free(m->notify_socket);
2363 m->notify_socket = n;
2365 } else if (startswith(l, "kdbus-fd=")) {
2368 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2369 log_warning("Failed to parse kdbus fd: %s", l + 9);
2371 safe_close(m->kdbus_fd);
2372 m->kdbus_fd = fdset_remove(fds, fd);
2375 } else if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0)
2376 log_warning("Unknown serialization item '%s'", l);
2381 char name[UNIT_NAME_MAX+2];
2384 if (!fgets(name, sizeof(name), f)) {
2395 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2399 r = unit_deserialize(u, f, fds);
2408 assert(m->n_reloading > 0);
2414 int manager_reload(Manager *m) {
2416 _cleanup_fclose_ FILE *f = NULL;
2417 _cleanup_fdset_free_ FDSet *fds = NULL;
2421 r = manager_open_serialization(m, &f);
2426 bus_manager_send_reloading(m, true);
2434 r = manager_serialize(m, f, fds, false);
2440 if (fseeko(f, 0, SEEK_SET) < 0) {
2445 /* From here on there is no way back. */
2446 manager_clear_jobs_and_units(m);
2447 manager_undo_generators(m);
2448 lookup_paths_free(&m->lookup_paths);
2450 /* Find new unit paths */
2451 manager_run_generators(m);
2453 q = lookup_paths_init(
2454 &m->lookup_paths, m->running_as, true,
2456 m->generator_unit_path,
2457 m->generator_unit_path_early,
2458 m->generator_unit_path_late);
2462 manager_build_unit_path_cache(m);
2464 /* First, enumerate what we can from all config files */
2465 q = manager_enumerate(m);
2469 /* Second, deserialize our stored data */
2470 q = manager_deserialize(m, f, fds);
2477 /* Re-register notify_fd as event source */
2478 q = manager_setup_notify(m);
2482 /* Third, fire things up! */
2483 q = manager_coldplug(m);
2487 assert(m->n_reloading > 0);
2490 m->send_reloading_done = true;
2495 bool manager_is_reloading_or_reexecuting(Manager *m) {
2498 return m->n_reloading != 0;
2501 void manager_reset_failed(Manager *m) {
2507 HASHMAP_FOREACH(u, m->units, i)
2508 unit_reset_failed(u);
2511 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2517 /* Returns true if the unit is inactive or going down */
2518 u = manager_get_unit(m, name);
2522 return unit_inactive_or_pending(u);
2525 void manager_check_finished(Manager *m) {
2526 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2527 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2533 if (m->n_running_jobs == 0)
2534 m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
2536 if (hashmap_size(m->jobs) > 0) {
2538 if (m->jobs_in_progress_event_source)
2539 sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
2544 manager_flip_auto_status(m, false);
2546 /* Notify Type=idle units that we are done now */
2547 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2548 manager_close_idle_pipe(m);
2550 /* Turn off confirm spawn now */
2551 m->confirm_spawn = false;
2553 /* This is no longer the first boot */
2554 manager_set_first_boot(m, false);
2556 if (dual_timestamp_is_set(&m->finish_timestamp))
2559 dual_timestamp_get(&m->finish_timestamp);
2561 m->start_timeout_event_source = sd_event_source_unref(m->start_timeout_event_source);
2563 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2565 /* Note that m->kernel_usec.monotonic is always at 0,
2566 * and m->firmware_usec.monotonic and
2567 * m->loader_usec.monotonic should be considered
2568 * negative values. */
2570 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2571 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2572 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2573 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2575 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2577 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2578 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2580 log_struct(LOG_INFO,
2581 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2582 "KERNEL_USEC="USEC_FMT, kernel_usec,
2583 "INITRD_USEC="USEC_FMT, initrd_usec,
2584 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2585 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2586 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2587 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2588 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2589 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2592 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2595 log_struct(LOG_INFO,
2596 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2597 "KERNEL_USEC="USEC_FMT, kernel_usec,
2598 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2599 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2600 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2601 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2602 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2606 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2607 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2609 log_struct(LOG_INFO,
2610 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2611 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2612 "MESSAGE=Startup finished in %s.",
2613 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2617 SET_FOREACH(u, m->startup_units, i)
2619 cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
2621 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2625 "STATUS=Startup finished in %s.",
2626 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2629 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2640 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2641 /* systemd --system, not running --test */
2643 p = strappend("/run/systemd/", name);
2647 r = mkdir_p_label(p, 0755);
2649 log_error("Failed to create generator directory %s: %s",
2654 } else if (m->running_as == SYSTEMD_USER) {
2655 const char *s = NULL;
2657 s = getenv("XDG_RUNTIME_DIR");
2660 p = strjoin(s, "/systemd/", name, NULL);
2664 r = mkdir_p_label(p, 0755);
2666 log_error("Failed to create generator directory %s: %s",
2672 /* systemd --system --test */
2674 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2679 log_error("Failed to create generator directory %s: %m",
2690 static void trim_generator_dir(Manager *m, char **generator) {
2697 if (rmdir(*generator) >= 0) {
2705 void manager_run_generators(Manager *m) {
2706 _cleanup_closedir_ DIR *d = NULL;
2707 const char *generator_path;
2708 const char *argv[5];
2716 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2717 d = opendir(generator_path);
2719 if (errno == ENOENT)
2722 log_error("Failed to enumerate generator directory %s: %m",
2727 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2731 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2735 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2739 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2740 argv[1] = m->generator_unit_path;
2741 argv[2] = m->generator_unit_path_early;
2742 argv[3] = m->generator_unit_path_late;
2745 RUN_WITH_UMASK(0022)
2746 execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
2749 trim_generator_dir(m, &m->generator_unit_path);
2750 trim_generator_dir(m, &m->generator_unit_path_early);
2751 trim_generator_dir(m, &m->generator_unit_path_late);
2754 static void remove_generator_dir(Manager *m, char **generator) {
2761 strv_remove(m->lookup_paths.unit_path, *generator);
2762 rm_rf(*generator, false, true, false);
2768 void manager_undo_generators(Manager *m) {
2771 remove_generator_dir(m, &m->generator_unit_path);
2772 remove_generator_dir(m, &m->generator_unit_path_early);
2773 remove_generator_dir(m, &m->generator_unit_path_late);
2776 int manager_environment_add(Manager *m, char **minus, char **plus) {
2777 char **a = NULL, **b = NULL, **l;
2782 if (!strv_isempty(minus)) {
2783 a = strv_env_delete(l, 1, minus);
2790 if (!strv_isempty(plus)) {
2791 b = strv_env_merge(2, l, plus);
2800 if (m->environment != l)
2801 strv_free(m->environment);
2808 manager_clean_environment(m);
2809 strv_sort(m->environment);
2814 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2819 for (i = 0; i < _RLIMIT_MAX; i++) {
2820 if (!default_rlimit[i])
2823 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2831 void manager_recheck_journal(Manager *m) {
2836 if (m->running_as != SYSTEMD_SYSTEM)
2839 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2840 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2841 log_close_journal();
2845 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2846 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2847 log_close_journal();
2851 /* Hmm, OK, so the socket is fully up and the service is up
2852 * too, then let's make use of the thing. */
2856 void manager_set_show_status(Manager *m, ShowStatus mode) {
2858 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
2860 if (m->running_as != SYSTEMD_SYSTEM)
2863 m->show_status = mode;
2866 touch("/run/systemd/show-status");
2868 unlink("/run/systemd/show-status");
2871 static bool manager_get_show_status(Manager *m) {
2874 if (m->running_as != SYSTEMD_SYSTEM)
2877 if (m->no_console_output)
2880 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
2883 if (m->show_status > 0)
2886 /* If Plymouth is running make sure we show the status, so
2887 * that there's something nice to see when people press Esc */
2889 return plymouth_running();
2892 void manager_set_first_boot(Manager *m, bool b) {
2895 if (m->running_as != SYSTEMD_SYSTEM)
2901 touch("/run/systemd/first-boot");
2903 unlink("/run/systemd/first-boot");
2906 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
2909 if (!manager_get_show_status(m))
2912 /* XXX We should totally drop the check for ephemeral here
2913 * and thus effectively make 'Type=idle' pointless. */
2914 if (ephemeral && m->n_on_console > 0)
2917 va_start(ap, format);
2918 status_vprintf(status, true, ephemeral, format, ap);
2922 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
2923 _cleanup_free_ char *p = NULL;
2931 p = unit_name_from_path(path, suffix);
2935 found = manager_get_unit(m, p);
2945 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
2946 char p[strlen(path)+1];
2952 path_kill_slashes(p);
2954 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
2957 const char *manager_get_runtime_prefix(Manager *m) {
2960 return m->running_as == SYSTEMD_SYSTEM ?
2962 getenv("XDG_RUNTIME_DIR");
2965 ManagerState manager_state(Manager *m) {
2970 /* Did we ever finish booting? If not then we are still starting up */
2971 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
2973 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
2974 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
2975 return MANAGER_INITIALIZING;
2977 return MANAGER_STARTING;
2980 /* Is the special shutdown target queued? If so, we are in shutdown state */
2981 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2982 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
2983 return MANAGER_STOPPING;
2985 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
2986 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
2987 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
2988 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
2989 return MANAGER_MAINTENANCE;
2991 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
2992 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
2993 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
2994 return MANAGER_MAINTENANCE;
2996 /* Are there any failed units? If so, we are in degraded mode */
2997 if (set_size(m->failed_units) > 0)
2998 return MANAGER_DEGRADED;
3000 return MANAGER_RUNNING;
3003 static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
3004 [MANAGER_INITIALIZING] = "initializing",
3005 [MANAGER_STARTING] = "starting",
3006 [MANAGER_RUNNING] = "running",
3007 [MANAGER_DEGRADED] = "degraded",
3008 [MANAGER_MAINTENANCE] = "maintenance",
3009 [MANAGER_STOPPING] = "stopping",
3012 DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);