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/>.
28 #include <sys/inotify.h>
29 #include <sys/epoll.h>
31 #include <sys/reboot.h>
32 #include <sys/ioctl.h>
36 #include <sys/types.h>
39 #include <sys/timerfd.h>
45 #include "sd-daemon.h"
47 #include "sd-messages.h"
50 #include "transaction.h"
57 #include "ratelimit.h"
58 #include "locale-setup.h"
59 #include "mount-setup.h"
60 #include "unit-name.h"
62 #include "path-lookup.h"
64 #include "exit-status.h"
67 #include "cgroup-util.h"
68 #include "path-util.h"
70 #include "boot-timestamps.h"
72 #include "bus-errors.h"
73 #include "bus-error.h"
76 #include "dbus-unit.h"
78 #include "dbus-manager.h"
79 #include "bus-kernel.h"
80 #include "time-util.h"
82 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
83 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
85 /* Initial delay and the interval for printing status messages about running jobs */
86 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
87 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
88 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
90 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
91 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
92 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
93 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
94 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
95 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
97 static int manager_watch_jobs_in_progress(Manager *m) {
102 if (m->jobs_in_progress_event_source)
105 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
106 return sd_event_add_time(
108 &m->jobs_in_progress_event_source,
111 manager_dispatch_jobs_in_progress, m);
114 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
116 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
119 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
120 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
124 p = mempset(p, ' ', pos-2);
125 p = stpcpy(p, ANSI_RED_ON);
129 if (pos > 0 && pos <= width) {
130 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
134 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
137 p = stpcpy(p, ANSI_RED_ON);
140 p = mempset(p, ' ', width-1-pos);
141 strcpy(p, ANSI_HIGHLIGHT_OFF);
145 void manager_flip_auto_status(Manager *m, bool enable) {
149 if (m->show_status == SHOW_STATUS_AUTO)
150 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
152 if (m->show_status == SHOW_STATUS_TEMPORARY)
153 manager_set_show_status(m, SHOW_STATUS_AUTO);
157 static void manager_print_jobs_in_progress(Manager *m) {
158 _cleanup_free_ char *job_of_n = NULL;
161 unsigned counter = 0, print_nr;
162 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
164 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
169 manager_flip_auto_status(m, true);
171 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
173 HASHMAP_FOREACH(j, m->jobs, i)
174 if (j->state == JOB_RUNNING && counter++ == print_nr)
177 /* m->n_running_jobs must be consistent with the contents of m->jobs,
178 * so the above loop must have succeeded in finding j. */
179 assert(counter == print_nr + 1);
182 cylon_pos = m->jobs_in_progress_iteration % 14;
184 cylon_pos = 14 - cylon_pos;
185 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
187 m->jobs_in_progress_iteration++;
189 if (m->n_running_jobs > 1)
190 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
193 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
194 if (job_get_timeout(j, &x) > 0)
195 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
197 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
198 "%sA %s job is running for %s (%s / %s)",
200 job_type_to_string(j->type),
201 unit_description(j->unit),
206 static int have_ask_password(void) {
207 _cleanup_closedir_ DIR *dir;
209 dir = opendir("/run/systemd/ask-password");
222 if (!de && errno != 0)
227 if (startswith(de->d_name, "ask."))
232 static int manager_dispatch_ask_password_fd(sd_event_source *source,
233 int fd, uint32_t revents, void *userdata) {
234 Manager *m = userdata;
240 m->have_ask_password = have_ask_password();
241 if (m->have_ask_password < 0)
242 /* Log error but continue. Negative have_ask_password
243 * is treated as unknown status. */
244 log_error("Failed to list /run/systemd/ask-password: %s", strerror(m->have_ask_password));
249 static void manager_close_ask_password(Manager *m) {
252 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
253 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
254 m->have_ask_password = -EINVAL;
257 static int manager_check_ask_password(Manager *m) {
262 if (!m->ask_password_event_source) {
263 assert(m->ask_password_inotify_fd < 0);
265 mkdir_p_label("/run/systemd/ask-password", 0755);
267 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
268 if (m->ask_password_inotify_fd < 0) {
269 log_error("inotify_init1() failed: %m");
273 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
274 log_error("Failed to add watch on /run/systemd/ask-password: %m");
275 manager_close_ask_password(m);
279 r = sd_event_add_io(m->event, &m->ask_password_event_source,
280 m->ask_password_inotify_fd, EPOLLIN,
281 manager_dispatch_ask_password_fd, m);
283 log_error("Failed to add event source for /run/systemd/ask-password: %m");
284 manager_close_ask_password(m);
288 /* Queries might have been added meanwhile... */
289 manager_dispatch_ask_password_fd(m->ask_password_event_source,
290 m->ask_password_inotify_fd, EPOLLIN, m);
293 return m->have_ask_password;
296 static int manager_watch_idle_pipe(Manager *m) {
301 if (m->idle_pipe_event_source)
304 if (m->idle_pipe[2] < 0)
307 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
309 log_error("Failed to watch idle pipe: %s", strerror(-r));
316 static void manager_close_idle_pipe(Manager *m) {
319 safe_close_pair(m->idle_pipe);
320 safe_close_pair(m->idle_pipe + 2);
323 static int manager_setup_time_change(Manager *m) {
326 /* We only care for the cancellation event, hence we set the
327 * timeout to the latest possible value. */
328 struct itimerspec its = {
329 .it_value.tv_sec = TIME_T_MAX,
333 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
338 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
339 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
341 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
342 if (m->time_change_fd < 0) {
343 log_error("Failed to create timerfd: %m");
347 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
348 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
349 m->time_change_fd = safe_close(m->time_change_fd);
353 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
355 log_error("Failed to create time change event source: %s", strerror(-r));
359 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
364 static int enable_special_signals(Manager *m) {
365 _cleanup_close_ int fd = -1;
369 /* Enable that we get SIGINT on control-alt-del. In containers
370 * this will fail with EPERM (older) or EINVAL (newer), so
372 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
373 log_warning("Failed to enable ctrl-alt-del handling: %m");
375 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
377 /* Support systems without virtual console */
379 log_warning("Failed to open /dev/tty0: %m");
381 /* Enable that we get SIGWINCH on kbrequest */
382 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
383 log_warning("Failed to enable kbrequest handling: %m");
389 static int manager_setup_signals(Manager *m) {
390 struct sigaction sa = {
391 .sa_handler = SIG_DFL,
392 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
402 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
404 /* We make liberal use of realtime signals here. On
405 * Linux/glibc we have 30 of them (with the exception of Linux
406 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
409 assert_se(sigemptyset(&mask) == 0);
410 sigset_add_many(&mask,
411 SIGCHLD, /* Child died */
412 SIGTERM, /* Reexecute daemon */
413 SIGHUP, /* Reload configuration */
414 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
415 SIGUSR2, /* systemd: dump status */
416 SIGINT, /* Kernel sends us this on control-alt-del */
417 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
418 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
420 SIGRTMIN+0, /* systemd: start default.target */
421 SIGRTMIN+1, /* systemd: isolate rescue.target */
422 SIGRTMIN+2, /* systemd: isolate emergency.target */
423 SIGRTMIN+3, /* systemd: start halt.target */
424 SIGRTMIN+4, /* systemd: start poweroff.target */
425 SIGRTMIN+5, /* systemd: start reboot.target */
426 SIGRTMIN+6, /* systemd: start kexec.target */
428 /* ... space for more special targets ... */
430 SIGRTMIN+13, /* systemd: Immediate halt */
431 SIGRTMIN+14, /* systemd: Immediate poweroff */
432 SIGRTMIN+15, /* systemd: Immediate reboot */
433 SIGRTMIN+16, /* systemd: Immediate kexec */
435 /* ... space for more immediate system state changes ... */
437 SIGRTMIN+20, /* systemd: enable status messages */
438 SIGRTMIN+21, /* systemd: disable status messages */
439 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
440 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
441 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
443 /* .. one free signal here ... */
445 #if !defined(__hppa64__) && !defined(__hppa__)
446 /* Apparently Linux on hppa has fewer RT
447 * signals (SIGRTMAX is SIGRTMIN+25 there),
448 * hence let's not try to make use of them
449 * here. Since these commands are accessible
450 * by different means and only really a safety
451 * net, the missing functionality on hppa
452 * shouldn't matter. */
454 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
455 SIGRTMIN+27, /* systemd: set log target to console */
456 SIGRTMIN+28, /* systemd: set log target to kmsg */
457 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete)*/
459 /* ... one free signal here SIGRTMIN+30 ... */
462 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
464 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
465 if (m->signal_fd < 0)
468 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
472 /* Process signals a bit earlier than the rest of things, but
473 * later than notify_fd processing, so that the notify
474 * processing can still figure out to which process/service a
475 * message belongs, before we reap the process. */
476 r = sd_event_source_set_priority(m->signal_event_source, -5);
480 if (m->running_as == SYSTEMD_SYSTEM)
481 return enable_special_signals(m);
486 static void manager_clean_environment(Manager *m) {
489 /* Let's remove some environment variables that we
490 * need ourselves to communicate with our clients */
503 static int manager_default_environment(Manager *m) {
506 if (m->running_as == SYSTEMD_SYSTEM) {
507 /* The system manager always starts with a clean
508 * environment for its children. It does not import
509 * the kernel or the parents exported variables.
511 * The initial passed environ is untouched to keep
512 * /proc/self/environ valid; it is used for tagging
513 * the init process inside containers. */
514 m->environment = strv_new("PATH=" DEFAULT_PATH,
517 /* Import locale variables LC_*= from configuration */
518 locale_setup(&m->environment);
520 /* The user manager passes its own environment
521 * along to its children. */
522 m->environment = strv_copy(environ);
528 manager_clean_environment(m);
529 strv_sort(m->environment);
534 int manager_new(SystemdRunningAs running_as, bool test_run, Manager **_m) {
539 assert(running_as >= 0);
540 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
542 m = new0(Manager, 1);
547 if (running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
548 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
551 m->running_as = running_as;
552 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
553 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
555 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
557 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;
558 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
560 m->ask_password_inotify_fd = -1;
561 m->have_ask_password = -EINVAL; /* we don't know */
563 m->test_run = test_run;
565 r = manager_default_environment(m);
569 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
573 r = hashmap_ensure_allocated(&m->jobs, NULL);
577 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
581 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
585 r = set_ensure_allocated(&m->startup_units, NULL);
589 r = set_ensure_allocated(&m->failed_units, NULL);
593 r = sd_event_default(&m->event);
597 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
601 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
605 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
609 r = manager_setup_signals(m);
613 r = manager_setup_cgroup(m);
617 r = manager_setup_time_change(m);
621 m->udev = udev_new();
627 /* Note that we set up neither kdbus, nor the notify fd
628 * here. We do that after deserialization, since they might
629 * have gotten serialized across the reexec. */
631 m->taint_usr = dir_is_empty("/usr") > 0;
641 static int manager_setup_notify(Manager *m) {
647 if (m->notify_fd < 0) {
648 _cleanup_close_ int fd = -1;
649 union sockaddr_union sa = {
650 .sa.sa_family = AF_UNIX,
652 static const int one = 1;
654 /* First free all secondary fields */
655 free(m->notify_socket);
656 m->notify_socket = NULL;
657 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
659 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
661 log_error("Failed to allocate notification socket: %m");
665 if (m->running_as == SYSTEMD_SYSTEM)
666 m->notify_socket = strdup("/run/systemd/notify");
670 e = getenv("XDG_RUNTIME_DIR");
672 log_error("XDG_RUNTIME_DIR is not set: %m");
676 m->notify_socket = strappend(e, "/systemd/notify");
678 if (!m->notify_socket)
681 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
682 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
684 log_error("bind(%s) failed: %m", sa.un.sun_path);
685 if (errno == EADDRINUSE) {
686 log_notice("Removing %s socket and trying again.", m->notify_socket);
687 r = unlink(m->notify_socket);
689 log_error("Failed to remove %s: %m", m->notify_socket);
693 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
695 log_error("bind(%s) failed: %m", sa.un.sun_path);
702 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
704 log_error("SO_PASSCRED failed: %m");
711 log_debug("Using notification socket %s", m->notify_socket);
714 if (!m->notify_event_source) {
715 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
717 log_error("Failed to allocate notify event source: %s", strerror(-r));
721 /* Process signals a bit earlier than SIGCHLD, so that we can
722 * still identify to which service an exit message belongs */
723 r = sd_event_source_set_priority(m->notify_event_source, -7);
725 log_error("Failed to set priority of notify event source: %s", strerror(-r));
733 static int manager_setup_kdbus(Manager *m) {
735 _cleanup_free_ char *p = NULL;
739 if (m->test_run || m->kdbus_fd >= 0)
742 m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", m->running_as == SYSTEMD_SYSTEM, &p);
743 if (m->kdbus_fd < 0) {
744 log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd));
748 log_debug("Successfully set up kdbus on %s", p);
750 /* Create the namespace directory here, so that the contents
751 * of that directory is not visible to non-root users. This is
752 * necessary to ensure that users cannot get access to busses
753 * of virtualized users when no UID namespacing is used. */
754 if (m->running_as == SYSTEMD_SYSTEM)
755 mkdir_p_label("/dev/kdbus/domain", 0700);
761 static int manager_connect_bus(Manager *m, bool reexecuting) {
762 bool try_bus_connect;
772 (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
774 /* Try to connect to the busses, if possible. */
775 return bus_init(m, try_bus_connect);
778 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
784 while ((u = m->cleanup_queue)) {
785 assert(u->in_cleanup_queue);
795 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
796 GC_OFFSET_UNSURE, /* No clue */
797 GC_OFFSET_GOOD, /* We still need this unit */
798 GC_OFFSET_BAD, /* We don't need this unit anymore */
802 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
809 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
810 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
811 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
814 if (u->in_cleanup_queue)
817 if (unit_check_gc(u))
820 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
824 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
825 unit_gc_sweep(other, gc_marker);
827 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
830 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
837 /* We were unable to find anything out about this entry, so
838 * let's investigate it later */
839 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
840 unit_add_to_gc_queue(u);
844 /* We definitely know that this one is not useful anymore, so
845 * let's mark it for deletion */
846 u->gc_marker = gc_marker + GC_OFFSET_BAD;
847 unit_add_to_cleanup_queue(u);
851 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
854 static unsigned manager_dispatch_gc_queue(Manager *m) {
861 /* log_debug("Running GC..."); */
863 m->gc_marker += _GC_OFFSET_MAX;
864 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
867 gc_marker = m->gc_marker;
869 while ((u = m->gc_queue)) {
870 assert(u->in_gc_queue);
872 unit_gc_sweep(u, gc_marker);
874 LIST_REMOVE(gc_queue, m->gc_queue, u);
875 u->in_gc_queue = false;
879 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
880 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
881 log_debug_unit(u->id, "Collecting %s", u->id);
882 u->gc_marker = gc_marker + GC_OFFSET_BAD;
883 unit_add_to_cleanup_queue(u);
887 m->n_in_gc_queue = 0;
892 static void manager_clear_jobs_and_units(Manager *m) {
897 while ((u = hashmap_first(m->units)))
900 manager_dispatch_cleanup_queue(m);
902 assert(!m->load_queue);
903 assert(!m->run_queue);
904 assert(!m->dbus_unit_queue);
905 assert(!m->dbus_job_queue);
906 assert(!m->cleanup_queue);
907 assert(!m->gc_queue);
909 assert(hashmap_isempty(m->jobs));
910 assert(hashmap_isempty(m->units));
913 m->n_running_jobs = 0;
916 void manager_free(Manager *m) {
922 manager_clear_jobs_and_units(m);
924 for (c = 0; c < _UNIT_TYPE_MAX; c++)
925 if (unit_vtable[c]->shutdown)
926 unit_vtable[c]->shutdown(m);
928 /* If we reexecute ourselves, we keep the root cgroup
930 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
932 manager_undo_generators(m);
936 hashmap_free(m->units);
937 hashmap_free(m->jobs);
938 hashmap_free(m->watch_pids1);
939 hashmap_free(m->watch_pids2);
940 hashmap_free(m->watch_bus);
942 set_free(m->startup_units);
943 set_free(m->failed_units);
945 sd_event_source_unref(m->signal_event_source);
946 sd_event_source_unref(m->notify_event_source);
947 sd_event_source_unref(m->time_change_event_source);
948 sd_event_source_unref(m->jobs_in_progress_event_source);
949 sd_event_source_unref(m->idle_pipe_event_source);
950 sd_event_source_unref(m->run_queue_event_source);
952 safe_close(m->signal_fd);
953 safe_close(m->notify_fd);
954 safe_close(m->time_change_fd);
955 safe_close(m->kdbus_fd);
957 manager_close_ask_password(m);
959 manager_close_idle_pipe(m);
962 sd_event_unref(m->event);
964 free(m->notify_socket);
966 lookup_paths_free(&m->lookup_paths);
967 strv_free(m->environment);
969 hashmap_free(m->cgroup_unit);
970 set_free_free(m->unit_path_cache);
972 free(m->switch_root);
973 free(m->switch_root_init);
975 for (i = 0; i < _RLIMIT_MAX; i++)
978 assert(hashmap_isempty(m->units_requiring_mounts_for));
979 hashmap_free(m->units_requiring_mounts_for);
984 int manager_enumerate(Manager *m) {
990 /* Let's ask every type to load all units from disk/kernel
991 * that it might know */
992 for (c = 0; c < _UNIT_TYPE_MAX; c++)
993 if (unit_vtable[c]->enumerate) {
994 q = unit_vtable[c]->enumerate(m);
999 manager_dispatch_load_queue(m);
1003 static int manager_coldplug(Manager *m) {
1011 /* Then, let's set up their initial state. */
1012 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1015 /* ignore aliases */
1019 q = unit_coldplug(u);
1027 static void manager_build_unit_path_cache(Manager *m) {
1029 _cleanup_closedir_ DIR *d = NULL;
1034 set_free_free(m->unit_path_cache);
1036 m->unit_path_cache = set_new(&string_hash_ops);
1037 if (!m->unit_path_cache) {
1038 log_error("Failed to allocate unit path cache.");
1042 /* This simply builds a list of files we know exist, so that
1043 * we don't always have to go to disk */
1045 STRV_FOREACH(i, m->lookup_paths.unit_path) {
1050 if (errno != ENOENT)
1051 log_error("Failed to open directory %s: %m", *i);
1055 while ((de = readdir(d))) {
1058 if (ignore_file(de->d_name))
1061 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
1067 r = set_consume(m->unit_path_cache, p);
1079 log_error("Failed to build unit path cache: %s", strerror(-r));
1081 set_free_free(m->unit_path_cache);
1082 m->unit_path_cache = NULL;
1086 static int manager_distribute_fds(Manager *m, FDSet *fds) {
1093 HASHMAP_FOREACH(u, m->units, i) {
1095 if (fdset_size(fds) <= 0)
1098 if (UNIT_VTABLE(u)->distribute_fds) {
1099 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
1108 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1113 dual_timestamp_get(&m->generators_start_timestamp);
1114 manager_run_generators(m);
1115 dual_timestamp_get(&m->generators_finish_timestamp);
1117 r = lookup_paths_init(
1118 &m->lookup_paths, m->running_as, true,
1120 m->generator_unit_path,
1121 m->generator_unit_path_early,
1122 m->generator_unit_path_late);
1126 manager_build_unit_path_cache(m);
1128 /* If we will deserialize make sure that during enumeration
1129 * this is already known, so we increase the counter here
1134 /* First, enumerate what we can from all config files */
1135 dual_timestamp_get(&m->units_load_start_timestamp);
1136 r = manager_enumerate(m);
1137 dual_timestamp_get(&m->units_load_finish_timestamp);
1139 /* Second, deserialize if there is something to deserialize */
1141 r = manager_deserialize(m, serialization, fds);
1143 /* Any fds left? Find some unit which wants them. This is
1144 * useful to allow container managers to pass some file
1145 * descriptors to us pre-initialized. This enables
1146 * socket-based activation of entire containers. */
1147 if (fdset_size(fds) > 0) {
1148 q = manager_distribute_fds(m, fds);
1149 if (q < 0 && r == 0)
1153 /* We might have deserialized the notify fd, but if we didn't
1154 * then let's create the bus now */
1155 q = manager_setup_notify(m);
1156 if (q < 0 && r == 0)
1159 /* We might have deserialized the kdbus control fd, but if we
1160 * didn't, then let's create the bus now. */
1161 manager_setup_kdbus(m);
1162 manager_connect_bus(m, !!serialization);
1163 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
1165 /* Third, fire things up! */
1166 q = manager_coldplug(m);
1167 if (q < 0 && r == 0)
1170 if (serialization) {
1171 assert(m->n_reloading > 0);
1174 /* Let's wait for the UnitNew/JobNew messages being
1175 * sent, before we notify that the reload is
1177 m->send_reloading_done = true;
1183 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1188 assert(type < _JOB_TYPE_MAX);
1190 assert(mode < _JOB_MODE_MAX);
1192 if (mode == JOB_ISOLATE && type != JOB_START) {
1193 sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
1197 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
1198 sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
1202 log_debug_unit(unit->id,
1203 "Trying to enqueue job %s/%s/%s", unit->id,
1204 job_type_to_string(type), job_mode_to_string(mode));
1206 job_type_collapse(&type, unit);
1208 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
1212 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
1213 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1214 mode == JOB_IGNORE_DEPENDENCIES, e);
1218 if (mode == JOB_ISOLATE) {
1219 r = transaction_add_isolate_jobs(tr, m);
1224 r = transaction_activate(tr, m, mode, e);
1228 log_debug_unit(unit->id,
1229 "Enqueued job %s/%s as %u", unit->id,
1230 job_type_to_string(type), (unsigned) tr->anchor_job->id);
1233 *_ret = tr->anchor_job;
1235 transaction_free(tr);
1239 transaction_abort(tr);
1240 transaction_free(tr);
1244 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1249 assert(type < _JOB_TYPE_MAX);
1251 assert(mode < _JOB_MODE_MAX);
1253 r = manager_load_unit(m, name, NULL, NULL, &unit);
1257 return manager_add_job(m, type, unit, mode, override, e, _ret);
1260 Job *manager_get_job(Manager *m, uint32_t id) {
1263 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1266 Unit *manager_get_unit(Manager *m, const char *name) {
1270 return hashmap_get(m->units, name);
1273 unsigned manager_dispatch_load_queue(Manager *m) {
1279 /* Make sure we are not run recursively */
1280 if (m->dispatching_load_queue)
1283 m->dispatching_load_queue = true;
1285 /* Dispatches the load queue. Takes a unit from the queue and
1286 * tries to load its data until the queue is empty */
1288 while ((u = m->load_queue)) {
1289 assert(u->in_load_queue);
1295 m->dispatching_load_queue = false;
1299 int manager_load_unit_prepare(
1311 assert(name || path);
1313 /* This will prepare the unit for loading, but not actually
1314 * load anything from disk. */
1316 if (path && !is_path(path))
1317 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
1320 name = basename(path);
1322 t = unit_name_to_type(name);
1324 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID))
1325 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
1327 ret = manager_get_unit(m, name);
1333 ret = unit_new(m, unit_vtable[t]->object_size);
1338 ret->fragment_path = strdup(path);
1339 if (!ret->fragment_path) {
1345 r = unit_add_name(ret, name);
1351 unit_add_to_load_queue(ret);
1352 unit_add_to_dbus_queue(ret);
1353 unit_add_to_gc_queue(ret);
1361 int manager_load_unit(
1372 /* This will load the service information files, but not actually
1373 * start any services or anything. */
1375 r = manager_load_unit_prepare(m, name, path, e, _ret);
1379 manager_dispatch_load_queue(m);
1382 *_ret = unit_follow_merge(*_ret);
1387 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1394 HASHMAP_FOREACH(j, s->jobs, i)
1395 job_dump(j, f, prefix);
1398 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1406 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1408 unit_dump(u, f, prefix);
1411 void manager_clear_jobs(Manager *m) {
1416 while ((j = hashmap_first(m->jobs)))
1417 /* No need to recurse. We're cancelling all jobs. */
1418 job_finish_and_invalidate(j, JOB_CANCELED, false);
1421 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1422 Manager *m = userdata;
1428 while ((j = m->run_queue)) {
1429 assert(j->installed);
1430 assert(j->in_run_queue);
1432 job_run_and_invalidate(j);
1435 if (m->n_running_jobs > 0)
1436 manager_watch_jobs_in_progress(m);
1438 if (m->n_on_console > 0)
1439 manager_watch_idle_pipe(m);
1444 static unsigned manager_dispatch_dbus_queue(Manager *m) {
1451 if (m->dispatching_dbus_queue)
1454 m->dispatching_dbus_queue = true;
1456 while ((u = m->dbus_unit_queue)) {
1457 assert(u->in_dbus_queue);
1459 bus_unit_send_change_signal(u);
1463 while ((j = m->dbus_job_queue)) {
1464 assert(j->in_dbus_queue);
1466 bus_job_send_change_signal(j);
1470 m->dispatching_dbus_queue = false;
1472 if (m->send_reloading_done) {
1473 m->send_reloading_done = false;
1475 bus_manager_send_reloading(m, false);
1478 if (m->queued_message)
1479 bus_send_queued_message(m);
1484 static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) {
1485 _cleanup_strv_free_ char **tags = NULL;
1492 tags = strv_split(buf, "\n\r");
1498 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1500 if (UNIT_VTABLE(u)->notify_message)
1501 UNIT_VTABLE(u)->notify_message(u, pid, tags);
1504 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1505 Manager *m = userdata;
1509 assert(m->notify_fd == fd);
1511 if (revents != EPOLLIN) {
1512 log_warning("Got unexpected poll event for notify fd.");
1518 struct iovec iovec = {
1520 .iov_len = sizeof(buf)-1,
1525 struct cmsghdr cmsghdr;
1526 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1529 struct msghdr msghdr = {
1532 .msg_control = &control,
1533 .msg_controllen = sizeof(control),
1535 struct ucred *ucred;
1538 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
1543 if (errno == EAGAIN || errno == EINTR)
1549 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1550 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1551 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1552 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1553 log_warning("Received notify message without credentials. Ignoring.");
1557 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1559 assert((size_t) n < sizeof(buf));
1562 /* Notify every unit that might be interested, but try
1563 * to avoid notifying the same one multiple times. */
1564 u1 = manager_get_unit_by_pid(m, ucred->pid);
1566 manager_invoke_notify_message(m, u1, ucred->pid, buf, n);
1570 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
1571 if (u2 && u2 != u1) {
1572 manager_invoke_notify_message(m, u2, ucred->pid, buf, n);
1576 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
1577 if (u3 && u3 != u2 && u3 != u1) {
1578 manager_invoke_notify_message(m, u3, ucred->pid, buf, n);
1583 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
1589 static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
1594 log_debug_unit(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
1596 unit_unwatch_pid(u, si->si_pid);
1597 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1600 static int manager_dispatch_sigchld(Manager *m) {
1606 /* First we call waitd() for a PID and do not reap the
1607 * zombie. That way we can still access /proc/$PID for
1608 * it while it is a zombie. */
1609 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1611 if (errno == ECHILD)
1623 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1624 _cleanup_free_ char *name = NULL;
1627 get_process_comm(si.si_pid, &name);
1629 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1630 si.si_pid, strna(name),
1631 sigchld_code_to_string(si.si_code),
1633 strna(si.si_code == CLD_EXITED
1634 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1635 : signal_to_string(si.si_status)));
1637 /* And now figure out the unit this belongs
1638 * to, it might be multiple... */
1639 u1 = manager_get_unit_by_pid(m, si.si_pid);
1641 invoke_sigchld_event(m, u1, &si);
1642 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid));
1644 invoke_sigchld_event(m, u2, &si);
1645 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid));
1646 if (u3 && u3 != u2 && u3 != u1)
1647 invoke_sigchld_event(m, u3, &si);
1650 /* And now, we actually reap the zombie. */
1651 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1662 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1663 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1666 log_debug_unit(name, "Activating special unit %s", name);
1668 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1670 log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
1675 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1676 Manager *m = userdata;
1678 struct signalfd_siginfo sfsi;
1679 bool sigchld = false;
1682 assert(m->signal_fd == fd);
1684 if (revents != EPOLLIN) {
1685 log_warning("Got unexpected events from signal file descriptor.");
1690 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
1691 if (n != sizeof(sfsi)) {
1696 if (errno == EINTR || errno == EAGAIN)
1702 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
1703 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
1704 ? LOG_DEBUG : LOG_INFO,
1707 switch (sfsi.ssi_signo) {
1714 if (m->running_as == SYSTEMD_SYSTEM) {
1715 /* This is for compatibility with the
1716 * original sysvinit */
1717 m->exit_code = MANAGER_REEXECUTE;
1724 if (m->running_as == SYSTEMD_SYSTEM) {
1725 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1729 /* Run the exit target if there is one, if not, just exit. */
1730 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1731 m->exit_code = MANAGER_EXIT;
1738 if (m->running_as == SYSTEMD_SYSTEM)
1739 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1741 /* This is a nop on non-init */
1745 if (m->running_as == SYSTEMD_SYSTEM)
1746 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1748 /* This is a nop on non-init */
1754 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1756 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1757 log_info("Trying to reconnect to bus...");
1761 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1762 log_info("Loading D-Bus service...");
1763 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1770 _cleanup_free_ char *dump = NULL;
1771 _cleanup_fclose_ FILE *f = NULL;
1774 f = open_memstream(&dump, &size);
1776 log_warning("Failed to allocate memory stream.");
1780 manager_dump_units(m, f, "\t");
1781 manager_dump_jobs(m, f, "\t");
1784 log_warning("Failed to write status stream");
1789 log_warning("Failed to flush status stream");
1793 log_dump(LOG_INFO, dump);
1798 m->exit_code = MANAGER_RELOAD;
1803 /* Starting SIGRTMIN+0 */
1804 static const char * const target_table[] = {
1805 [0] = SPECIAL_DEFAULT_TARGET,
1806 [1] = SPECIAL_RESCUE_TARGET,
1807 [2] = SPECIAL_EMERGENCY_TARGET,
1808 [3] = SPECIAL_HALT_TARGET,
1809 [4] = SPECIAL_POWEROFF_TARGET,
1810 [5] = SPECIAL_REBOOT_TARGET,
1811 [6] = SPECIAL_KEXEC_TARGET
1814 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1815 static const ManagerExitCode code_table[] = {
1817 [1] = MANAGER_POWEROFF,
1818 [2] = MANAGER_REBOOT,
1822 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1823 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1824 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1825 manager_start_target(m, target_table[idx],
1826 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1830 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1831 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1832 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1836 switch (sfsi.ssi_signo - SIGRTMIN) {
1839 log_debug("Enabling showing of status.");
1840 manager_set_show_status(m, SHOW_STATUS_YES);
1844 log_debug("Disabling showing of status.");
1845 manager_set_show_status(m, SHOW_STATUS_NO);
1849 log_set_max_level(LOG_DEBUG);
1850 log_notice("Setting log level to debug.");
1854 log_set_max_level(LOG_INFO);
1855 log_notice("Setting log level to info.");
1859 if (m->running_as == SYSTEMD_USER) {
1860 m->exit_code = MANAGER_EXIT;
1864 /* This is a nop on init */
1868 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1869 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1870 log_notice("Setting log target to journal-or-kmsg.");
1874 log_set_target(LOG_TARGET_CONSOLE);
1875 log_notice("Setting log target to console.");
1879 log_set_target(LOG_TARGET_KMSG);
1880 log_notice("Setting log target to kmsg.");
1884 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1891 manager_dispatch_sigchld(m);
1896 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1897 Manager *m = userdata;
1902 assert(m->time_change_fd == fd);
1904 log_struct(LOG_INFO,
1905 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1906 "MESSAGE=Time has been changed",
1909 /* Restart the watch */
1910 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
1911 m->time_change_fd = safe_close(m->time_change_fd);
1913 manager_setup_time_change(m);
1915 HASHMAP_FOREACH(u, m->units, i)
1916 if (UNIT_VTABLE(u)->time_change)
1917 UNIT_VTABLE(u)->time_change(u);
1922 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1923 Manager *m = userdata;
1926 assert(m->idle_pipe[2] == fd);
1928 m->no_console_output = m->n_on_console > 0;
1930 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
1931 manager_close_idle_pipe(m);
1936 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1937 Manager *m = userdata;
1944 manager_print_jobs_in_progress(m);
1946 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1947 r = sd_event_source_set_time(source, next);
1951 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
1954 int manager_loop(Manager *m) {
1957 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1960 m->exit_code = MANAGER_OK;
1962 /* Release the path cache */
1963 set_free_free(m->unit_path_cache);
1964 m->unit_path_cache = NULL;
1966 manager_check_finished(m);
1968 /* There might still be some zombies hanging around from
1969 * before we were exec()'ed. Let's reap them. */
1970 r = manager_dispatch_sigchld(m);
1974 while (m->exit_code == MANAGER_OK) {
1977 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1980 if (!ratelimit_test(&rl)) {
1981 /* Yay, something is going seriously wrong, pause a little */
1982 log_warning("Looping too fast. Throttling execution a little.");
1987 if (manager_dispatch_load_queue(m) > 0)
1990 if (manager_dispatch_gc_queue(m) > 0)
1993 if (manager_dispatch_cleanup_queue(m) > 0)
1996 if (manager_dispatch_cgroup_queue(m) > 0)
1999 if (manager_dispatch_dbus_queue(m) > 0)
2002 /* Sleep for half the watchdog time */
2003 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
2004 wait_usec = m->runtime_watchdog / 2;
2008 wait_usec = USEC_INFINITY;
2010 r = sd_event_run(m->event, wait_usec);
2012 log_error("Failed to run event loop: %s", strerror(-r));
2017 return m->exit_code;
2020 int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
2021 _cleanup_free_ char *n = NULL;
2029 r = unit_name_from_dbus_path(s, &n);
2033 r = manager_load_unit(m, n, NULL, e, &u);
2042 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
2052 p = startswith(s, "/org/freedesktop/systemd1/job/");
2056 r = safe_atou(p, &id);
2060 j = manager_get_job(m, id);
2069 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2072 _cleanup_free_ char *p = NULL;
2075 audit_fd = get_audit_fd();
2079 /* Don't generate audit events if the service was already
2080 * started and we're just deserializing */
2081 if (m->n_reloading > 0)
2084 if (m->running_as != SYSTEMD_SYSTEM)
2087 if (u->type != UNIT_SERVICE)
2090 p = unit_name_to_prefix_and_instance(u->id);
2092 log_error_unit(u->id,
2093 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
2097 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
2098 if (errno == EPERM) {
2099 /* We aren't allowed to send audit messages?
2100 * Then let's not retry again. */
2103 log_warning("Failed to send audit message: %m");
2109 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2110 union sockaddr_union sa = PLYMOUTH_SOCKET;
2113 _cleanup_free_ char *message = NULL;
2114 _cleanup_close_ int fd = -1;
2116 /* Don't generate plymouth events if the service was already
2117 * started and we're just deserializing */
2118 if (m->n_reloading > 0)
2121 if (m->running_as != SYSTEMD_SYSTEM)
2124 if (detect_container(NULL) > 0)
2127 if (u->type != UNIT_SERVICE &&
2128 u->type != UNIT_MOUNT &&
2129 u->type != UNIT_SWAP)
2132 /* We set SOCK_NONBLOCK here so that we rather drop the
2133 * message then wait for plymouth */
2134 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2136 log_error("socket() failed: %m");
2140 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2142 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2143 log_error("connect() failed: %m");
2147 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2153 if (write(fd, message, n + 1) != n + 1)
2154 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2155 log_error("Failed to write Plymouth message: %m");
2158 void manager_dispatch_bus_name_owner_changed(
2161 const char* old_owner,
2162 const char *new_owner) {
2169 u = hashmap_get(m->watch_bus, name);
2173 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2176 int manager_open_serialization(Manager *m, FILE **_f) {
2183 path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
2184 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
2188 log_debug("Serializing state to %s", path);
2190 f = fdopen(fd, "w+");
2201 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2214 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2215 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2216 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2217 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2219 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2220 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2221 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2222 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2225 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2226 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2227 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2228 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2229 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2230 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2231 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2232 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2235 if (!switching_root) {
2236 STRV_FOREACH(e, m->environment) {
2237 _cleanup_free_ char *ce;
2243 fprintf(f, "env=%s\n", *e);
2247 if (m->notify_fd >= 0) {
2250 copy = fdset_put_dup(fds, m->notify_fd);
2254 fprintf(f, "notify-fd=%i\n", copy);
2255 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2258 if (m->kdbus_fd >= 0) {
2261 copy = fdset_put_dup(fds, m->kdbus_fd);
2265 fprintf(f, "kdbus-fd=%i\n", copy);
2268 bus_track_serialize(m->subscribed, f);
2272 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2280 r = unit_serialize(u, f, fds, !switching_root);
2287 assert(m->n_reloading > 0);
2293 r = bus_fdset_add_all(m, fds);
2300 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2306 log_debug("Deserializing state...");
2311 char line[LINE_MAX], *l;
2313 if (!fgets(line, sizeof(line), f)) {
2328 if (startswith(l, "current-job-id=")) {
2331 if (safe_atou32(l+15, &id) < 0)
2332 log_warning("Failed to parse current job id value %s", l+15);
2334 m->current_job_id = MAX(m->current_job_id, id);
2336 } else if (startswith(l, "n-installed-jobs=")) {
2339 if (safe_atou32(l+17, &n) < 0)
2340 log_warning("Failed to parse installed jobs counter %s", l+17);
2342 m->n_installed_jobs += n;
2344 } else if (startswith(l, "n-failed-jobs=")) {
2347 if (safe_atou32(l+14, &n) < 0)
2348 log_warning("Failed to parse failed jobs counter %s", l+14);
2350 m->n_failed_jobs += n;
2352 } else if (startswith(l, "taint-usr=")) {
2355 b = parse_boolean(l+10);
2357 log_warning("Failed to parse taint /usr flag %s", l+10);
2359 m->taint_usr = m->taint_usr || b;
2361 } else if (startswith(l, "firmware-timestamp="))
2362 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2363 else if (startswith(l, "loader-timestamp="))
2364 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2365 else if (startswith(l, "kernel-timestamp="))
2366 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2367 else if (startswith(l, "initrd-timestamp="))
2368 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2369 else if (startswith(l, "userspace-timestamp="))
2370 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2371 else if (startswith(l, "finish-timestamp="))
2372 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2373 else if (startswith(l, "security-start-timestamp="))
2374 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2375 else if (startswith(l, "security-finish-timestamp="))
2376 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2377 else if (startswith(l, "generators-start-timestamp="))
2378 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2379 else if (startswith(l, "generators-finish-timestamp="))
2380 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2381 else if (startswith(l, "units-load-start-timestamp="))
2382 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2383 else if (startswith(l, "units-load-finish-timestamp="))
2384 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2385 else if (startswith(l, "env=")) {
2386 _cleanup_free_ char *uce = NULL;
2389 uce = cunescape(l+4);
2395 e = strv_env_set(m->environment, uce);
2401 strv_free(m->environment);
2404 } else if (startswith(l, "notify-fd=")) {
2407 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2408 log_warning("Failed to parse notify fd: %s", l + 10);
2410 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2411 safe_close(m->notify_fd);
2412 m->notify_fd = fdset_remove(fds, fd);
2415 } else if (startswith(l, "notify-socket=")) {
2424 free(m->notify_socket);
2425 m->notify_socket = n;
2427 } else if (startswith(l, "kdbus-fd=")) {
2430 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2431 log_warning("Failed to parse kdbus fd: %s", l + 9);
2433 safe_close(m->kdbus_fd);
2434 m->kdbus_fd = fdset_remove(fds, fd);
2437 } else if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0)
2438 log_warning("Unknown serialization item '%s'", l);
2443 char name[UNIT_NAME_MAX+2];
2446 if (!fgets(name, sizeof(name), f)) {
2457 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2461 r = unit_deserialize(u, f, fds);
2470 assert(m->n_reloading > 0);
2476 int manager_reload(Manager *m) {
2478 _cleanup_fclose_ FILE *f = NULL;
2479 _cleanup_fdset_free_ FDSet *fds = NULL;
2483 r = manager_open_serialization(m, &f);
2488 bus_manager_send_reloading(m, true);
2496 r = manager_serialize(m, f, fds, false);
2502 if (fseeko(f, 0, SEEK_SET) < 0) {
2507 /* From here on there is no way back. */
2508 manager_clear_jobs_and_units(m);
2509 manager_undo_generators(m);
2510 lookup_paths_free(&m->lookup_paths);
2512 /* Find new unit paths */
2513 manager_run_generators(m);
2515 q = lookup_paths_init(
2516 &m->lookup_paths, m->running_as, true,
2518 m->generator_unit_path,
2519 m->generator_unit_path_early,
2520 m->generator_unit_path_late);
2524 manager_build_unit_path_cache(m);
2526 /* First, enumerate what we can from all config files */
2527 q = manager_enumerate(m);
2531 /* Second, deserialize our stored data */
2532 q = manager_deserialize(m, f, fds);
2539 /* Re-register notify_fd as event source */
2540 q = manager_setup_notify(m);
2544 /* Third, fire things up! */
2545 q = manager_coldplug(m);
2549 assert(m->n_reloading > 0);
2552 m->send_reloading_done = true;
2557 bool manager_is_reloading_or_reexecuting(Manager *m) {
2560 return m->n_reloading != 0;
2563 void manager_reset_failed(Manager *m) {
2569 HASHMAP_FOREACH(u, m->units, i)
2570 unit_reset_failed(u);
2573 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2579 /* Returns true if the unit is inactive or going down */
2580 u = manager_get_unit(m, name);
2584 return unit_inactive_or_pending(u);
2587 void manager_check_finished(Manager *m) {
2588 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2589 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2595 if (m->n_running_jobs == 0)
2596 m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
2598 if (hashmap_size(m->jobs) > 0) {
2600 if (m->jobs_in_progress_event_source)
2601 sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
2606 manager_flip_auto_status(m, false);
2608 /* Notify Type=idle units that we are done now */
2609 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2610 manager_close_idle_pipe(m);
2612 /* Turn off confirm spawn now */
2613 m->confirm_spawn = false;
2615 /* No need to update ask password status when we're going non-interactive */
2616 manager_close_ask_password(m);
2618 /* This is no longer the first boot */
2619 manager_set_first_boot(m, false);
2621 if (dual_timestamp_is_set(&m->finish_timestamp))
2624 dual_timestamp_get(&m->finish_timestamp);
2626 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2628 /* Note that m->kernel_usec.monotonic is always at 0,
2629 * and m->firmware_usec.monotonic and
2630 * m->loader_usec.monotonic should be considered
2631 * negative values. */
2633 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2634 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2635 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2636 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2638 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2640 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2641 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2643 log_struct(LOG_INFO,
2644 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2645 "KERNEL_USEC="USEC_FMT, kernel_usec,
2646 "INITRD_USEC="USEC_FMT, initrd_usec,
2647 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2648 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2649 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2650 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2651 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2652 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2655 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2658 log_struct(LOG_INFO,
2659 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2660 "KERNEL_USEC="USEC_FMT, kernel_usec,
2661 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2662 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2663 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2664 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2665 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2669 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2670 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2672 log_struct(LOG_INFO,
2673 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2674 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2675 "MESSAGE=Startup finished in %s.",
2676 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2680 SET_FOREACH(u, m->startup_units, i)
2682 cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
2684 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2688 "STATUS=Startup finished in %s.",
2689 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2692 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2703 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2704 /* systemd --system, not running --test */
2706 p = strappend("/run/systemd/", name);
2710 r = mkdir_p_label(p, 0755);
2712 log_error("Failed to create generator directory %s: %s",
2717 } else if (m->running_as == SYSTEMD_USER) {
2718 const char *s = NULL;
2720 s = getenv("XDG_RUNTIME_DIR");
2723 p = strjoin(s, "/systemd/", name, NULL);
2727 r = mkdir_p_label(p, 0755);
2729 log_error("Failed to create generator directory %s: %s",
2735 /* systemd --system --test */
2737 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2742 log_error("Failed to create generator directory %s: %m",
2753 static void trim_generator_dir(Manager *m, char **generator) {
2760 if (rmdir(*generator) >= 0) {
2768 void manager_run_generators(Manager *m) {
2769 _cleanup_closedir_ DIR *d = NULL;
2770 const char *generator_path;
2771 const char *argv[5];
2779 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2780 d = opendir(generator_path);
2782 if (errno == ENOENT)
2785 log_error("Failed to enumerate generator directory %s: %m",
2790 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2794 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2798 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2802 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2803 argv[1] = m->generator_unit_path;
2804 argv[2] = m->generator_unit_path_early;
2805 argv[3] = m->generator_unit_path_late;
2808 RUN_WITH_UMASK(0022)
2809 execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
2812 trim_generator_dir(m, &m->generator_unit_path);
2813 trim_generator_dir(m, &m->generator_unit_path_early);
2814 trim_generator_dir(m, &m->generator_unit_path_late);
2817 static void remove_generator_dir(Manager *m, char **generator) {
2824 strv_remove(m->lookup_paths.unit_path, *generator);
2825 rm_rf(*generator, false, true, false);
2831 void manager_undo_generators(Manager *m) {
2834 remove_generator_dir(m, &m->generator_unit_path);
2835 remove_generator_dir(m, &m->generator_unit_path_early);
2836 remove_generator_dir(m, &m->generator_unit_path_late);
2839 int manager_environment_add(Manager *m, char **minus, char **plus) {
2840 char **a = NULL, **b = NULL, **l;
2845 if (!strv_isempty(minus)) {
2846 a = strv_env_delete(l, 1, minus);
2853 if (!strv_isempty(plus)) {
2854 b = strv_env_merge(2, l, plus);
2863 if (m->environment != l)
2864 strv_free(m->environment);
2871 manager_clean_environment(m);
2872 strv_sort(m->environment);
2877 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2882 for (i = 0; i < _RLIMIT_MAX; i++) {
2883 if (!default_rlimit[i])
2886 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2894 void manager_recheck_journal(Manager *m) {
2899 if (m->running_as != SYSTEMD_SYSTEM)
2902 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2903 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2904 log_close_journal();
2908 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2909 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2910 log_close_journal();
2914 /* Hmm, OK, so the socket is fully up and the service is up
2915 * too, then let's make use of the thing. */
2919 void manager_set_show_status(Manager *m, ShowStatus mode) {
2921 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
2923 if (m->running_as != SYSTEMD_SYSTEM)
2926 m->show_status = mode;
2929 touch("/run/systemd/show-status");
2931 unlink("/run/systemd/show-status");
2934 static bool manager_get_show_status(Manager *m, StatusType type) {
2937 if (m->running_as != SYSTEMD_SYSTEM)
2940 if (m->no_console_output)
2943 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
2946 /* If we cannot find out the status properly, just proceed. */
2947 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
2950 if (m->show_status > 0)
2953 /* If Plymouth is running make sure we show the status, so
2954 * that there's something nice to see when people press Esc */
2955 return plymouth_running();
2958 void manager_set_first_boot(Manager *m, bool b) {
2961 if (m->running_as != SYSTEMD_SYSTEM)
2967 touch("/run/systemd/first-boot");
2969 unlink("/run/systemd/first-boot");
2972 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
2975 if (!manager_get_show_status(m, type))
2978 /* XXX We should totally drop the check for ephemeral here
2979 * and thus effectively make 'Type=idle' pointless. */
2980 if (type == STATUS_TYPE_EPHEMERAL && m->n_on_console > 0)
2983 va_start(ap, format);
2984 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
2988 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
2989 _cleanup_free_ char *p = NULL;
2997 p = unit_name_from_path(path, suffix);
3001 found = manager_get_unit(m, p);
3011 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3012 char p[strlen(path)+1];
3018 path_kill_slashes(p);
3020 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3023 const char *manager_get_runtime_prefix(Manager *m) {
3026 return m->running_as == SYSTEMD_SYSTEM ?
3028 getenv("XDG_RUNTIME_DIR");
3031 ManagerState manager_state(Manager *m) {
3036 /* Did we ever finish booting? If not then we are still starting up */
3037 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3039 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3040 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3041 return MANAGER_INITIALIZING;
3043 return MANAGER_STARTING;
3046 /* Is the special shutdown target queued? If so, we are in shutdown state */
3047 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
3048 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
3049 return MANAGER_STOPPING;
3051 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3052 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3053 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3054 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3055 return MANAGER_MAINTENANCE;
3057 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3058 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3059 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3060 return MANAGER_MAINTENANCE;
3062 /* Are there any failed units? If so, we are in degraded mode */
3063 if (set_size(m->failed_units) > 0)
3064 return MANAGER_DEGRADED;
3066 return MANAGER_RUNNING;
3069 static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
3070 [MANAGER_INITIALIZING] = "initializing",
3071 [MANAGER_STARTING] = "starting",
3072 [MANAGER_RUNNING] = "running",
3073 [MANAGER_DEGRADED] = "degraded",
3074 [MANAGER_MAINTENANCE] = "maintenance",
3075 [MANAGER_STOPPING] = "stopping",
3078 DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);