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 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
1195 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1196 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
1198 log_debug_unit(unit->id,
1199 "Trying to enqueue job %s/%s/%s", unit->id,
1200 job_type_to_string(type), job_mode_to_string(mode));
1202 job_type_collapse(&type, unit);
1204 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
1208 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
1209 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1210 mode == JOB_IGNORE_DEPENDENCIES, e);
1214 if (mode == JOB_ISOLATE) {
1215 r = transaction_add_isolate_jobs(tr, m);
1220 r = transaction_activate(tr, m, mode, e);
1224 log_debug_unit(unit->id,
1225 "Enqueued job %s/%s as %u", unit->id,
1226 job_type_to_string(type), (unsigned) tr->anchor_job->id);
1229 *_ret = tr->anchor_job;
1231 transaction_free(tr);
1235 transaction_abort(tr);
1236 transaction_free(tr);
1240 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1245 assert(type < _JOB_TYPE_MAX);
1247 assert(mode < _JOB_MODE_MAX);
1249 r = manager_load_unit(m, name, NULL, NULL, &unit);
1253 return manager_add_job(m, type, unit, mode, override, e, _ret);
1256 Job *manager_get_job(Manager *m, uint32_t id) {
1259 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1262 Unit *manager_get_unit(Manager *m, const char *name) {
1266 return hashmap_get(m->units, name);
1269 unsigned manager_dispatch_load_queue(Manager *m) {
1275 /* Make sure we are not run recursively */
1276 if (m->dispatching_load_queue)
1279 m->dispatching_load_queue = true;
1281 /* Dispatches the load queue. Takes a unit from the queue and
1282 * tries to load its data until the queue is empty */
1284 while ((u = m->load_queue)) {
1285 assert(u->in_load_queue);
1291 m->dispatching_load_queue = false;
1295 int manager_load_unit_prepare(
1307 assert(name || path);
1309 /* This will prepare the unit for loading, but not actually
1310 * load anything from disk. */
1312 if (path && !is_path(path))
1313 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
1316 name = basename(path);
1318 t = unit_name_to_type(name);
1320 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID))
1321 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
1323 ret = manager_get_unit(m, name);
1329 ret = unit_new(m, unit_vtable[t]->object_size);
1334 ret->fragment_path = strdup(path);
1335 if (!ret->fragment_path) {
1341 r = unit_add_name(ret, name);
1347 unit_add_to_load_queue(ret);
1348 unit_add_to_dbus_queue(ret);
1349 unit_add_to_gc_queue(ret);
1357 int manager_load_unit(
1368 /* This will load the service information files, but not actually
1369 * start any services or anything. */
1371 r = manager_load_unit_prepare(m, name, path, e, _ret);
1375 manager_dispatch_load_queue(m);
1378 *_ret = unit_follow_merge(*_ret);
1383 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1390 HASHMAP_FOREACH(j, s->jobs, i)
1391 job_dump(j, f, prefix);
1394 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1402 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1404 unit_dump(u, f, prefix);
1407 void manager_clear_jobs(Manager *m) {
1412 while ((j = hashmap_first(m->jobs)))
1413 /* No need to recurse. We're cancelling all jobs. */
1414 job_finish_and_invalidate(j, JOB_CANCELED, false);
1417 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1418 Manager *m = userdata;
1424 while ((j = m->run_queue)) {
1425 assert(j->installed);
1426 assert(j->in_run_queue);
1428 job_run_and_invalidate(j);
1431 if (m->n_running_jobs > 0)
1432 manager_watch_jobs_in_progress(m);
1434 if (m->n_on_console > 0)
1435 manager_watch_idle_pipe(m);
1440 static unsigned manager_dispatch_dbus_queue(Manager *m) {
1447 if (m->dispatching_dbus_queue)
1450 m->dispatching_dbus_queue = true;
1452 while ((u = m->dbus_unit_queue)) {
1453 assert(u->in_dbus_queue);
1455 bus_unit_send_change_signal(u);
1459 while ((j = m->dbus_job_queue)) {
1460 assert(j->in_dbus_queue);
1462 bus_job_send_change_signal(j);
1466 m->dispatching_dbus_queue = false;
1468 if (m->send_reloading_done) {
1469 m->send_reloading_done = false;
1471 bus_manager_send_reloading(m, false);
1474 if (m->queued_message)
1475 bus_send_queued_message(m);
1480 static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) {
1481 _cleanup_strv_free_ char **tags = NULL;
1488 tags = strv_split(buf, "\n\r");
1494 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1496 if (UNIT_VTABLE(u)->notify_message)
1497 UNIT_VTABLE(u)->notify_message(u, pid, tags);
1500 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1501 Manager *m = userdata;
1505 assert(m->notify_fd == fd);
1507 if (revents != EPOLLIN) {
1508 log_warning("Got unexpected poll event for notify fd.");
1514 struct iovec iovec = {
1516 .iov_len = sizeof(buf)-1,
1521 struct cmsghdr cmsghdr;
1522 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1525 struct msghdr msghdr = {
1528 .msg_control = &control,
1529 .msg_controllen = sizeof(control),
1531 struct ucred *ucred;
1534 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
1539 if (errno == EAGAIN || errno == EINTR)
1545 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1546 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1547 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1548 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1549 log_warning("Received notify message without credentials. Ignoring.");
1553 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1555 assert((size_t) n < sizeof(buf));
1558 /* Notify every unit that might be interested, but try
1559 * to avoid notifying the same one multiple times. */
1560 u1 = manager_get_unit_by_pid(m, ucred->pid);
1562 manager_invoke_notify_message(m, u1, ucred->pid, buf, n);
1566 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
1567 if (u2 && u2 != u1) {
1568 manager_invoke_notify_message(m, u2, ucred->pid, buf, n);
1572 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
1573 if (u3 && u3 != u2 && u3 != u1) {
1574 manager_invoke_notify_message(m, u3, ucred->pid, buf, n);
1579 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
1585 static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
1590 log_debug_unit(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
1592 unit_unwatch_pid(u, si->si_pid);
1593 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1596 static int manager_dispatch_sigchld(Manager *m) {
1602 /* First we call waitd() for a PID and do not reap the
1603 * zombie. That way we can still access /proc/$PID for
1604 * it while it is a zombie. */
1605 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1607 if (errno == ECHILD)
1619 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1620 _cleanup_free_ char *name = NULL;
1623 get_process_comm(si.si_pid, &name);
1625 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1626 si.si_pid, strna(name),
1627 sigchld_code_to_string(si.si_code),
1629 strna(si.si_code == CLD_EXITED
1630 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1631 : signal_to_string(si.si_status)));
1633 /* And now figure out the unit this belongs
1634 * to, it might be multiple... */
1635 u1 = manager_get_unit_by_pid(m, si.si_pid);
1637 invoke_sigchld_event(m, u1, &si);
1638 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid));
1640 invoke_sigchld_event(m, u2, &si);
1641 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid));
1642 if (u3 && u3 != u2 && u3 != u1)
1643 invoke_sigchld_event(m, u3, &si);
1646 /* And now, we actually reap the zombie. */
1647 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1658 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1659 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1662 log_debug_unit(name, "Activating special unit %s", name);
1664 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1666 log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
1671 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1672 Manager *m = userdata;
1674 struct signalfd_siginfo sfsi;
1675 bool sigchld = false;
1678 assert(m->signal_fd == fd);
1680 if (revents != EPOLLIN) {
1681 log_warning("Got unexpected events from signal file descriptor.");
1686 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
1687 if (n != sizeof(sfsi)) {
1692 if (errno == EINTR || errno == EAGAIN)
1698 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
1699 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
1700 ? LOG_DEBUG : LOG_INFO,
1703 switch (sfsi.ssi_signo) {
1710 if (m->running_as == SYSTEMD_SYSTEM) {
1711 /* This is for compatibility with the
1712 * original sysvinit */
1713 m->exit_code = MANAGER_REEXECUTE;
1720 if (m->running_as == SYSTEMD_SYSTEM) {
1721 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1725 /* Run the exit target if there is one, if not, just exit. */
1726 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1727 m->exit_code = MANAGER_EXIT;
1734 if (m->running_as == SYSTEMD_SYSTEM)
1735 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1737 /* This is a nop on non-init */
1741 if (m->running_as == SYSTEMD_SYSTEM)
1742 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1744 /* This is a nop on non-init */
1750 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1752 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1753 log_info("Trying to reconnect to bus...");
1757 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1758 log_info("Loading D-Bus service...");
1759 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1766 _cleanup_free_ char *dump = NULL;
1767 _cleanup_fclose_ FILE *f = NULL;
1770 f = open_memstream(&dump, &size);
1772 log_warning("Failed to allocate memory stream.");
1776 manager_dump_units(m, f, "\t");
1777 manager_dump_jobs(m, f, "\t");
1780 log_warning("Failed to write status stream");
1785 log_warning("Failed to flush status stream");
1789 log_dump(LOG_INFO, dump);
1794 m->exit_code = MANAGER_RELOAD;
1799 /* Starting SIGRTMIN+0 */
1800 static const char * const target_table[] = {
1801 [0] = SPECIAL_DEFAULT_TARGET,
1802 [1] = SPECIAL_RESCUE_TARGET,
1803 [2] = SPECIAL_EMERGENCY_TARGET,
1804 [3] = SPECIAL_HALT_TARGET,
1805 [4] = SPECIAL_POWEROFF_TARGET,
1806 [5] = SPECIAL_REBOOT_TARGET,
1807 [6] = SPECIAL_KEXEC_TARGET
1810 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1811 static const ManagerExitCode code_table[] = {
1813 [1] = MANAGER_POWEROFF,
1814 [2] = MANAGER_REBOOT,
1818 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1819 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1820 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1821 manager_start_target(m, target_table[idx],
1822 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1826 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1827 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1828 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1832 switch (sfsi.ssi_signo - SIGRTMIN) {
1835 log_debug("Enabling showing of status.");
1836 manager_set_show_status(m, SHOW_STATUS_YES);
1840 log_debug("Disabling showing of status.");
1841 manager_set_show_status(m, SHOW_STATUS_NO);
1845 log_set_max_level(LOG_DEBUG);
1846 log_notice("Setting log level to debug.");
1850 log_set_max_level(LOG_INFO);
1851 log_notice("Setting log level to info.");
1855 if (m->running_as == SYSTEMD_USER) {
1856 m->exit_code = MANAGER_EXIT;
1860 /* This is a nop on init */
1864 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1865 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1866 log_notice("Setting log target to journal-or-kmsg.");
1870 log_set_target(LOG_TARGET_CONSOLE);
1871 log_notice("Setting log target to console.");
1875 log_set_target(LOG_TARGET_KMSG);
1876 log_notice("Setting log target to kmsg.");
1880 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1887 manager_dispatch_sigchld(m);
1892 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1893 Manager *m = userdata;
1898 assert(m->time_change_fd == fd);
1900 log_struct(LOG_INFO,
1901 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1902 "MESSAGE=Time has been changed",
1905 /* Restart the watch */
1906 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
1907 m->time_change_fd = safe_close(m->time_change_fd);
1909 manager_setup_time_change(m);
1911 HASHMAP_FOREACH(u, m->units, i)
1912 if (UNIT_VTABLE(u)->time_change)
1913 UNIT_VTABLE(u)->time_change(u);
1918 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1919 Manager *m = userdata;
1922 assert(m->idle_pipe[2] == fd);
1924 m->no_console_output = m->n_on_console > 0;
1926 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
1927 manager_close_idle_pipe(m);
1932 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1933 Manager *m = userdata;
1940 manager_print_jobs_in_progress(m);
1942 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1943 r = sd_event_source_set_time(source, next);
1947 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
1950 int manager_loop(Manager *m) {
1953 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1956 m->exit_code = MANAGER_OK;
1958 /* Release the path cache */
1959 set_free_free(m->unit_path_cache);
1960 m->unit_path_cache = NULL;
1962 manager_check_finished(m);
1964 /* There might still be some zombies hanging around from
1965 * before we were exec()'ed. Let's reap them. */
1966 r = manager_dispatch_sigchld(m);
1970 while (m->exit_code == MANAGER_OK) {
1973 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1976 if (!ratelimit_test(&rl)) {
1977 /* Yay, something is going seriously wrong, pause a little */
1978 log_warning("Looping too fast. Throttling execution a little.");
1983 if (manager_dispatch_load_queue(m) > 0)
1986 if (manager_dispatch_gc_queue(m) > 0)
1989 if (manager_dispatch_cleanup_queue(m) > 0)
1992 if (manager_dispatch_cgroup_queue(m) > 0)
1995 if (manager_dispatch_dbus_queue(m) > 0)
1998 /* Sleep for half the watchdog time */
1999 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
2000 wait_usec = m->runtime_watchdog / 2;
2004 wait_usec = USEC_INFINITY;
2006 r = sd_event_run(m->event, wait_usec);
2008 log_error("Failed to run event loop: %s", strerror(-r));
2013 return m->exit_code;
2016 int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
2017 _cleanup_free_ char *n = NULL;
2025 r = unit_name_from_dbus_path(s, &n);
2029 r = manager_load_unit(m, n, NULL, e, &u);
2038 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
2048 p = startswith(s, "/org/freedesktop/systemd1/job/");
2052 r = safe_atou(p, &id);
2056 j = manager_get_job(m, id);
2065 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2068 _cleanup_free_ char *p = NULL;
2071 audit_fd = get_audit_fd();
2075 /* Don't generate audit events if the service was already
2076 * started and we're just deserializing */
2077 if (m->n_reloading > 0)
2080 if (m->running_as != SYSTEMD_SYSTEM)
2083 if (u->type != UNIT_SERVICE)
2086 p = unit_name_to_prefix_and_instance(u->id);
2088 log_error_unit(u->id,
2089 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
2093 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
2094 if (errno == EPERM) {
2095 /* We aren't allowed to send audit messages?
2096 * Then let's not retry again. */
2099 log_warning("Failed to send audit message: %m");
2105 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2106 union sockaddr_union sa = PLYMOUTH_SOCKET;
2109 _cleanup_free_ char *message = NULL;
2110 _cleanup_close_ int fd = -1;
2112 /* Don't generate plymouth events if the service was already
2113 * started and we're just deserializing */
2114 if (m->n_reloading > 0)
2117 if (m->running_as != SYSTEMD_SYSTEM)
2120 if (detect_container(NULL) > 0)
2123 if (u->type != UNIT_SERVICE &&
2124 u->type != UNIT_MOUNT &&
2125 u->type != UNIT_SWAP)
2128 /* We set SOCK_NONBLOCK here so that we rather drop the
2129 * message then wait for plymouth */
2130 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2132 log_error("socket() failed: %m");
2136 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2138 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2139 log_error("connect() failed: %m");
2143 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2149 if (write(fd, message, n + 1) != n + 1)
2150 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2151 log_error("Failed to write Plymouth message: %m");
2154 void manager_dispatch_bus_name_owner_changed(
2157 const char* old_owner,
2158 const char *new_owner) {
2165 u = hashmap_get(m->watch_bus, name);
2169 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2172 int manager_open_serialization(Manager *m, FILE **_f) {
2179 path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
2180 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
2184 log_debug("Serializing state to %s", path);
2186 f = fdopen(fd, "w+");
2197 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2210 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2211 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2212 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2213 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2215 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2216 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2217 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2218 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2221 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2222 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2223 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2224 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2225 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2226 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2227 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2228 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2231 if (!switching_root) {
2232 STRV_FOREACH(e, m->environment) {
2233 _cleanup_free_ char *ce;
2239 fprintf(f, "env=%s\n", *e);
2243 if (m->notify_fd >= 0) {
2246 copy = fdset_put_dup(fds, m->notify_fd);
2250 fprintf(f, "notify-fd=%i\n", copy);
2251 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2254 if (m->kdbus_fd >= 0) {
2257 copy = fdset_put_dup(fds, m->kdbus_fd);
2261 fprintf(f, "kdbus-fd=%i\n", copy);
2264 bus_track_serialize(m->subscribed, f);
2268 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2276 r = unit_serialize(u, f, fds, !switching_root);
2283 assert(m->n_reloading > 0);
2289 r = bus_fdset_add_all(m, fds);
2296 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2302 log_debug("Deserializing state...");
2307 char line[LINE_MAX], *l;
2309 if (!fgets(line, sizeof(line), f)) {
2324 if (startswith(l, "current-job-id=")) {
2327 if (safe_atou32(l+15, &id) < 0)
2328 log_warning("Failed to parse current job id value %s", l+15);
2330 m->current_job_id = MAX(m->current_job_id, id);
2332 } else if (startswith(l, "n-installed-jobs=")) {
2335 if (safe_atou32(l+17, &n) < 0)
2336 log_warning("Failed to parse installed jobs counter %s", l+17);
2338 m->n_installed_jobs += n;
2340 } else if (startswith(l, "n-failed-jobs=")) {
2343 if (safe_atou32(l+14, &n) < 0)
2344 log_warning("Failed to parse failed jobs counter %s", l+14);
2346 m->n_failed_jobs += n;
2348 } else if (startswith(l, "taint-usr=")) {
2351 b = parse_boolean(l+10);
2353 log_warning("Failed to parse taint /usr flag %s", l+10);
2355 m->taint_usr = m->taint_usr || b;
2357 } else if (startswith(l, "firmware-timestamp="))
2358 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2359 else if (startswith(l, "loader-timestamp="))
2360 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2361 else if (startswith(l, "kernel-timestamp="))
2362 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2363 else if (startswith(l, "initrd-timestamp="))
2364 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2365 else if (startswith(l, "userspace-timestamp="))
2366 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2367 else if (startswith(l, "finish-timestamp="))
2368 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2369 else if (startswith(l, "security-start-timestamp="))
2370 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2371 else if (startswith(l, "security-finish-timestamp="))
2372 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2373 else if (startswith(l, "generators-start-timestamp="))
2374 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2375 else if (startswith(l, "generators-finish-timestamp="))
2376 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2377 else if (startswith(l, "units-load-start-timestamp="))
2378 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2379 else if (startswith(l, "units-load-finish-timestamp="))
2380 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2381 else if (startswith(l, "env=")) {
2382 _cleanup_free_ char *uce = NULL;
2385 uce = cunescape(l+4);
2391 e = strv_env_set(m->environment, uce);
2397 strv_free(m->environment);
2400 } else if (startswith(l, "notify-fd=")) {
2403 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2404 log_warning("Failed to parse notify fd: %s", l + 10);
2406 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2407 safe_close(m->notify_fd);
2408 m->notify_fd = fdset_remove(fds, fd);
2411 } else if (startswith(l, "notify-socket=")) {
2420 free(m->notify_socket);
2421 m->notify_socket = n;
2423 } else if (startswith(l, "kdbus-fd=")) {
2426 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2427 log_warning("Failed to parse kdbus fd: %s", l + 9);
2429 safe_close(m->kdbus_fd);
2430 m->kdbus_fd = fdset_remove(fds, fd);
2433 } else if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0)
2434 log_warning("Unknown serialization item '%s'", l);
2439 char name[UNIT_NAME_MAX+2];
2442 if (!fgets(name, sizeof(name), f)) {
2453 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2457 r = unit_deserialize(u, f, fds);
2466 assert(m->n_reloading > 0);
2472 int manager_reload(Manager *m) {
2474 _cleanup_fclose_ FILE *f = NULL;
2475 _cleanup_fdset_free_ FDSet *fds = NULL;
2479 r = manager_open_serialization(m, &f);
2484 bus_manager_send_reloading(m, true);
2492 r = manager_serialize(m, f, fds, false);
2498 if (fseeko(f, 0, SEEK_SET) < 0) {
2503 /* From here on there is no way back. */
2504 manager_clear_jobs_and_units(m);
2505 manager_undo_generators(m);
2506 lookup_paths_free(&m->lookup_paths);
2508 /* Find new unit paths */
2509 manager_run_generators(m);
2511 q = lookup_paths_init(
2512 &m->lookup_paths, m->running_as, true,
2514 m->generator_unit_path,
2515 m->generator_unit_path_early,
2516 m->generator_unit_path_late);
2520 manager_build_unit_path_cache(m);
2522 /* First, enumerate what we can from all config files */
2523 q = manager_enumerate(m);
2527 /* Second, deserialize our stored data */
2528 q = manager_deserialize(m, f, fds);
2535 /* Re-register notify_fd as event source */
2536 q = manager_setup_notify(m);
2540 /* Third, fire things up! */
2541 q = manager_coldplug(m);
2545 assert(m->n_reloading > 0);
2548 m->send_reloading_done = true;
2553 bool manager_is_reloading_or_reexecuting(Manager *m) {
2556 return m->n_reloading != 0;
2559 void manager_reset_failed(Manager *m) {
2565 HASHMAP_FOREACH(u, m->units, i)
2566 unit_reset_failed(u);
2569 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2575 /* Returns true if the unit is inactive or going down */
2576 u = manager_get_unit(m, name);
2580 return unit_inactive_or_pending(u);
2583 static void manager_notify_finished(Manager *m) {
2584 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2585 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2590 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2592 /* Note that m->kernel_usec.monotonic is always at 0,
2593 * and m->firmware_usec.monotonic and
2594 * m->loader_usec.monotonic should be considered
2595 * negative values. */
2597 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2598 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2599 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2600 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2602 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2604 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2605 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2607 log_struct(LOG_INFO,
2608 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2609 "KERNEL_USEC="USEC_FMT, kernel_usec,
2610 "INITRD_USEC="USEC_FMT, initrd_usec,
2611 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2612 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2613 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2614 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2615 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2616 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2619 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2622 log_struct(LOG_INFO,
2623 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2624 "KERNEL_USEC="USEC_FMT, kernel_usec,
2625 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2626 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2627 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2628 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2629 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2633 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2634 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2636 log_struct(LOG_INFO,
2637 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2638 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2639 "MESSAGE=Startup finished in %s.",
2640 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2644 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2648 "STATUS=Startup finished in %s.",
2649 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2652 void manager_check_finished(Manager *m) {
2658 if (m->n_running_jobs == 0)
2659 m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
2661 if (hashmap_size(m->jobs) > 0) {
2663 if (m->jobs_in_progress_event_source)
2664 sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
2669 manager_flip_auto_status(m, false);
2671 /* Notify Type=idle units that we are done now */
2672 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2673 manager_close_idle_pipe(m);
2675 /* Turn off confirm spawn now */
2676 m->confirm_spawn = false;
2678 /* No need to update ask password status when we're going non-interactive */
2679 manager_close_ask_password(m);
2681 /* This is no longer the first boot */
2682 manager_set_first_boot(m, false);
2684 if (dual_timestamp_is_set(&m->finish_timestamp))
2687 dual_timestamp_get(&m->finish_timestamp);
2689 manager_notify_finished(m);
2691 SET_FOREACH(u, m->startup_units, i)
2693 cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
2696 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2707 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2708 /* systemd --system, not running --test */
2710 p = strappend("/run/systemd/", name);
2714 r = mkdir_p_label(p, 0755);
2716 log_error("Failed to create generator directory %s: %s",
2721 } else if (m->running_as == SYSTEMD_USER) {
2722 const char *s = NULL;
2724 s = getenv("XDG_RUNTIME_DIR");
2727 p = strjoin(s, "/systemd/", name, NULL);
2731 r = mkdir_p_label(p, 0755);
2733 log_error("Failed to create generator directory %s: %s",
2739 /* systemd --system --test */
2741 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2746 log_error("Failed to create generator directory %s: %m",
2757 static void trim_generator_dir(Manager *m, char **generator) {
2764 if (rmdir(*generator) >= 0) {
2772 void manager_run_generators(Manager *m) {
2773 _cleanup_closedir_ DIR *d = NULL;
2774 const char *generator_path;
2775 const char *argv[5];
2783 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2784 d = opendir(generator_path);
2786 if (errno == ENOENT)
2789 log_error("Failed to enumerate generator directory %s: %m",
2794 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2798 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2802 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2806 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2807 argv[1] = m->generator_unit_path;
2808 argv[2] = m->generator_unit_path_early;
2809 argv[3] = m->generator_unit_path_late;
2812 RUN_WITH_UMASK(0022)
2813 execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
2816 trim_generator_dir(m, &m->generator_unit_path);
2817 trim_generator_dir(m, &m->generator_unit_path_early);
2818 trim_generator_dir(m, &m->generator_unit_path_late);
2821 static void remove_generator_dir(Manager *m, char **generator) {
2828 strv_remove(m->lookup_paths.unit_path, *generator);
2829 rm_rf(*generator, false, true, false);
2835 void manager_undo_generators(Manager *m) {
2838 remove_generator_dir(m, &m->generator_unit_path);
2839 remove_generator_dir(m, &m->generator_unit_path_early);
2840 remove_generator_dir(m, &m->generator_unit_path_late);
2843 int manager_environment_add(Manager *m, char **minus, char **plus) {
2844 char **a = NULL, **b = NULL, **l;
2849 if (!strv_isempty(minus)) {
2850 a = strv_env_delete(l, 1, minus);
2857 if (!strv_isempty(plus)) {
2858 b = strv_env_merge(2, l, plus);
2867 if (m->environment != l)
2868 strv_free(m->environment);
2875 manager_clean_environment(m);
2876 strv_sort(m->environment);
2881 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2886 for (i = 0; i < _RLIMIT_MAX; i++) {
2887 if (!default_rlimit[i])
2890 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2898 void manager_recheck_journal(Manager *m) {
2903 if (m->running_as != SYSTEMD_SYSTEM)
2906 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2907 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2908 log_close_journal();
2912 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2913 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2914 log_close_journal();
2918 /* Hmm, OK, so the socket is fully up and the service is up
2919 * too, then let's make use of the thing. */
2923 void manager_set_show_status(Manager *m, ShowStatus mode) {
2925 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
2927 if (m->running_as != SYSTEMD_SYSTEM)
2930 m->show_status = mode;
2933 touch("/run/systemd/show-status");
2935 unlink("/run/systemd/show-status");
2938 static bool manager_get_show_status(Manager *m, StatusType type) {
2941 if (m->running_as != SYSTEMD_SYSTEM)
2944 if (m->no_console_output)
2947 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
2950 /* If we cannot find out the status properly, just proceed. */
2951 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
2954 if (m->show_status > 0)
2957 /* If Plymouth is running make sure we show the status, so
2958 * that there's something nice to see when people press Esc */
2959 return plymouth_running();
2962 void manager_set_first_boot(Manager *m, bool b) {
2965 if (m->running_as != SYSTEMD_SYSTEM)
2971 touch("/run/systemd/first-boot");
2973 unlink("/run/systemd/first-boot");
2976 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
2979 if (!manager_get_show_status(m, type))
2982 /* XXX We should totally drop the check for ephemeral here
2983 * and thus effectively make 'Type=idle' pointless. */
2984 if (type == STATUS_TYPE_EPHEMERAL && m->n_on_console > 0)
2987 va_start(ap, format);
2988 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
2992 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
2993 _cleanup_free_ char *p = NULL;
3001 p = unit_name_from_path(path, suffix);
3005 found = manager_get_unit(m, p);
3015 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3016 char p[strlen(path)+1];
3022 path_kill_slashes(p);
3024 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3027 const char *manager_get_runtime_prefix(Manager *m) {
3030 return m->running_as == SYSTEMD_SYSTEM ?
3032 getenv("XDG_RUNTIME_DIR");
3035 ManagerState manager_state(Manager *m) {
3040 /* Did we ever finish booting? If not then we are still starting up */
3041 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3043 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3044 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3045 return MANAGER_INITIALIZING;
3047 return MANAGER_STARTING;
3050 /* Is the special shutdown target queued? If so, we are in shutdown state */
3051 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
3052 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
3053 return MANAGER_STOPPING;
3055 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3056 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3057 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3058 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3059 return MANAGER_MAINTENANCE;
3061 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3062 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3063 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3064 return MANAGER_MAINTENANCE;
3066 /* Are there any failed units? If so, we are in degraded mode */
3067 if (set_size(m->failed_units) > 0)
3068 return MANAGER_DEGRADED;
3070 return MANAGER_RUNNING;
3073 static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
3074 [MANAGER_INITIALIZING] = "initializing",
3075 [MANAGER_STARTING] = "starting",
3076 [MANAGER_RUNNING] = "running",
3077 [MANAGER_DEGRADED] = "degraded",
3078 [MANAGER_MAINTENANCE] = "maintenance",
3079 [MANAGER_STOPPING] = "stopping",
3082 DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);