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");
667 if (!m->notify_socket)
672 e = getenv("XDG_RUNTIME_DIR");
674 log_error("XDG_RUNTIME_DIR is not set: %m");
678 m->notify_socket = strappend(e, "/systemd/notify");
679 if (!m->notify_socket)
682 mkdir_parents_label(m->notify_socket, 0755);
685 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
686 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
688 log_error("bind(%s) failed: %m", sa.un.sun_path);
689 if (errno == EADDRINUSE) {
690 log_notice("Removing %s socket and trying again.", m->notify_socket);
691 r = unlink(m->notify_socket);
693 log_error("Failed to remove %s: %m", m->notify_socket);
697 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
699 log_error("bind(%s) failed: %m", sa.un.sun_path);
706 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
708 log_error("SO_PASSCRED failed: %m");
715 log_debug("Using notification socket %s", m->notify_socket);
718 if (!m->notify_event_source) {
719 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
721 log_error("Failed to allocate notify event source: %s", strerror(-r));
725 /* Process signals a bit earlier than SIGCHLD, so that we can
726 * still identify to which service an exit message belongs */
727 r = sd_event_source_set_priority(m->notify_event_source, -7);
729 log_error("Failed to set priority of notify event source: %s", strerror(-r));
737 static int manager_setup_kdbus(Manager *m) {
739 _cleanup_free_ char *p = NULL;
743 if (m->test_run || m->kdbus_fd >= 0)
746 m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", m->running_as == SYSTEMD_SYSTEM, &p);
747 if (m->kdbus_fd < 0) {
748 log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd));
752 log_debug("Successfully set up kdbus on %s", p);
754 /* Create the namespace directory here, so that the contents
755 * of that directory is not visible to non-root users. This is
756 * necessary to ensure that users cannot get access to busses
757 * of virtualized users when no UID namespacing is used. */
758 if (m->running_as == SYSTEMD_SYSTEM)
759 mkdir_p_label("/dev/kdbus/domain", 0700);
765 static int manager_connect_bus(Manager *m, bool reexecuting) {
766 bool try_bus_connect;
776 (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
778 /* Try to connect to the busses, if possible. */
779 return bus_init(m, try_bus_connect);
782 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
788 while ((u = m->cleanup_queue)) {
789 assert(u->in_cleanup_queue);
799 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
800 GC_OFFSET_UNSURE, /* No clue */
801 GC_OFFSET_GOOD, /* We still need this unit */
802 GC_OFFSET_BAD, /* We don't need this unit anymore */
806 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
813 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
814 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
815 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
818 if (u->in_cleanup_queue)
821 if (unit_check_gc(u))
824 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
828 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
829 unit_gc_sweep(other, gc_marker);
831 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
834 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
841 /* We were unable to find anything out about this entry, so
842 * let's investigate it later */
843 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
844 unit_add_to_gc_queue(u);
848 /* We definitely know that this one is not useful anymore, so
849 * let's mark it for deletion */
850 u->gc_marker = gc_marker + GC_OFFSET_BAD;
851 unit_add_to_cleanup_queue(u);
855 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
858 static unsigned manager_dispatch_gc_queue(Manager *m) {
865 /* log_debug("Running GC..."); */
867 m->gc_marker += _GC_OFFSET_MAX;
868 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
871 gc_marker = m->gc_marker;
873 while ((u = m->gc_queue)) {
874 assert(u->in_gc_queue);
876 unit_gc_sweep(u, gc_marker);
878 LIST_REMOVE(gc_queue, m->gc_queue, u);
879 u->in_gc_queue = false;
883 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
884 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
885 log_debug_unit(u->id, "Collecting %s", u->id);
886 u->gc_marker = gc_marker + GC_OFFSET_BAD;
887 unit_add_to_cleanup_queue(u);
891 m->n_in_gc_queue = 0;
896 static void manager_clear_jobs_and_units(Manager *m) {
901 while ((u = hashmap_first(m->units)))
904 manager_dispatch_cleanup_queue(m);
906 assert(!m->load_queue);
907 assert(!m->run_queue);
908 assert(!m->dbus_unit_queue);
909 assert(!m->dbus_job_queue);
910 assert(!m->cleanup_queue);
911 assert(!m->gc_queue);
913 assert(hashmap_isempty(m->jobs));
914 assert(hashmap_isempty(m->units));
917 m->n_running_jobs = 0;
920 void manager_free(Manager *m) {
926 manager_clear_jobs_and_units(m);
928 for (c = 0; c < _UNIT_TYPE_MAX; c++)
929 if (unit_vtable[c]->shutdown)
930 unit_vtable[c]->shutdown(m);
932 /* If we reexecute ourselves, we keep the root cgroup
934 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
936 manager_undo_generators(m);
940 hashmap_free(m->units);
941 hashmap_free(m->jobs);
942 hashmap_free(m->watch_pids1);
943 hashmap_free(m->watch_pids2);
944 hashmap_free(m->watch_bus);
946 set_free(m->startup_units);
947 set_free(m->failed_units);
949 sd_event_source_unref(m->signal_event_source);
950 sd_event_source_unref(m->notify_event_source);
951 sd_event_source_unref(m->time_change_event_source);
952 sd_event_source_unref(m->jobs_in_progress_event_source);
953 sd_event_source_unref(m->idle_pipe_event_source);
954 sd_event_source_unref(m->run_queue_event_source);
956 safe_close(m->signal_fd);
957 safe_close(m->notify_fd);
958 safe_close(m->time_change_fd);
959 safe_close(m->kdbus_fd);
961 manager_close_ask_password(m);
963 manager_close_idle_pipe(m);
966 sd_event_unref(m->event);
968 free(m->notify_socket);
970 lookup_paths_free(&m->lookup_paths);
971 strv_free(m->environment);
973 hashmap_free(m->cgroup_unit);
974 set_free_free(m->unit_path_cache);
976 free(m->switch_root);
977 free(m->switch_root_init);
979 for (i = 0; i < _RLIMIT_MAX; i++)
982 assert(hashmap_isempty(m->units_requiring_mounts_for));
983 hashmap_free(m->units_requiring_mounts_for);
988 int manager_enumerate(Manager *m) {
994 /* Let's ask every type to load all units from disk/kernel
995 * that it might know */
996 for (c = 0; c < _UNIT_TYPE_MAX; c++)
997 if (unit_vtable[c]->enumerate) {
998 q = unit_vtable[c]->enumerate(m);
1003 manager_dispatch_load_queue(m);
1007 static int manager_coldplug(Manager *m) {
1015 /* Then, let's set up their initial state. */
1016 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1019 /* ignore aliases */
1023 q = unit_coldplug(u);
1031 static void manager_build_unit_path_cache(Manager *m) {
1033 _cleanup_closedir_ DIR *d = NULL;
1038 set_free_free(m->unit_path_cache);
1040 m->unit_path_cache = set_new(&string_hash_ops);
1041 if (!m->unit_path_cache) {
1042 log_error("Failed to allocate unit path cache.");
1046 /* This simply builds a list of files we know exist, so that
1047 * we don't always have to go to disk */
1049 STRV_FOREACH(i, m->lookup_paths.unit_path) {
1054 if (errno != ENOENT)
1055 log_error("Failed to open directory %s: %m", *i);
1059 while ((de = readdir(d))) {
1062 if (ignore_file(de->d_name))
1065 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
1071 r = set_consume(m->unit_path_cache, p);
1083 log_error("Failed to build unit path cache: %s", strerror(-r));
1085 set_free_free(m->unit_path_cache);
1086 m->unit_path_cache = NULL;
1090 static int manager_distribute_fds(Manager *m, FDSet *fds) {
1097 HASHMAP_FOREACH(u, m->units, i) {
1099 if (fdset_size(fds) <= 0)
1102 if (UNIT_VTABLE(u)->distribute_fds) {
1103 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
1112 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1117 dual_timestamp_get(&m->generators_start_timestamp);
1118 manager_run_generators(m);
1119 dual_timestamp_get(&m->generators_finish_timestamp);
1121 r = lookup_paths_init(
1122 &m->lookup_paths, m->running_as, true,
1124 m->generator_unit_path,
1125 m->generator_unit_path_early,
1126 m->generator_unit_path_late);
1130 manager_build_unit_path_cache(m);
1132 /* If we will deserialize make sure that during enumeration
1133 * this is already known, so we increase the counter here
1138 /* First, enumerate what we can from all config files */
1139 dual_timestamp_get(&m->units_load_start_timestamp);
1140 r = manager_enumerate(m);
1141 dual_timestamp_get(&m->units_load_finish_timestamp);
1143 /* Second, deserialize if there is something to deserialize */
1145 r = manager_deserialize(m, serialization, fds);
1147 /* Any fds left? Find some unit which wants them. This is
1148 * useful to allow container managers to pass some file
1149 * descriptors to us pre-initialized. This enables
1150 * socket-based activation of entire containers. */
1151 if (fdset_size(fds) > 0) {
1152 q = manager_distribute_fds(m, fds);
1153 if (q < 0 && r == 0)
1157 /* We might have deserialized the notify fd, but if we didn't
1158 * then let's create the bus now */
1159 q = manager_setup_notify(m);
1160 if (q < 0 && r == 0)
1163 /* We might have deserialized the kdbus control fd, but if we
1164 * didn't, then let's create the bus now. */
1165 manager_setup_kdbus(m);
1166 manager_connect_bus(m, !!serialization);
1167 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
1169 /* Third, fire things up! */
1170 q = manager_coldplug(m);
1171 if (q < 0 && r == 0)
1174 if (serialization) {
1175 assert(m->n_reloading > 0);
1178 /* Let's wait for the UnitNew/JobNew messages being
1179 * sent, before we notify that the reload is
1181 m->send_reloading_done = true;
1187 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1192 assert(type < _JOB_TYPE_MAX);
1194 assert(mode < _JOB_MODE_MAX);
1196 if (mode == JOB_ISOLATE && type != JOB_START)
1197 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
1199 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1200 return 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;
2076 audit_fd = get_audit_fd();
2080 /* Don't generate audit events if the service was already
2081 * started and we're just deserializing */
2082 if (m->n_reloading > 0)
2085 if (m->running_as != SYSTEMD_SYSTEM)
2088 if (u->type != UNIT_SERVICE)
2091 p = unit_name_to_prefix_and_instance(u->id);
2097 msg = strappenda("unit=", p);
2099 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2101 /* We aren't allowed to send audit messages?
2102 * Then let's not retry again. */
2105 log_warning("Failed to send audit message: %m");
2111 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2112 union sockaddr_union sa = PLYMOUTH_SOCKET;
2115 _cleanup_free_ char *message = NULL;
2116 _cleanup_close_ int fd = -1;
2118 /* Don't generate plymouth events if the service was already
2119 * started and we're just deserializing */
2120 if (m->n_reloading > 0)
2123 if (m->running_as != SYSTEMD_SYSTEM)
2126 if (detect_container(NULL) > 0)
2129 if (u->type != UNIT_SERVICE &&
2130 u->type != UNIT_MOUNT &&
2131 u->type != UNIT_SWAP)
2134 /* We set SOCK_NONBLOCK here so that we rather drop the
2135 * message then wait for plymouth */
2136 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2138 log_error("socket() failed: %m");
2142 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2144 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2145 log_error("connect() failed: %m");
2149 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2155 if (write(fd, message, n + 1) != n + 1)
2156 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2157 log_error("Failed to write Plymouth message: %m");
2160 void manager_dispatch_bus_name_owner_changed(
2163 const char* old_owner,
2164 const char *new_owner) {
2171 u = hashmap_get(m->watch_bus, name);
2175 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2178 int manager_open_serialization(Manager *m, FILE **_f) {
2185 path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
2186 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
2190 log_debug("Serializing state to %s", path);
2192 f = fdopen(fd, "w+");
2203 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2216 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2217 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2218 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2219 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2221 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2222 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2223 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2224 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2227 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2228 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2229 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2230 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2231 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2232 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2233 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2234 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2237 if (!switching_root) {
2238 STRV_FOREACH(e, m->environment) {
2239 _cleanup_free_ char *ce;
2245 fprintf(f, "env=%s\n", *e);
2249 if (m->notify_fd >= 0) {
2252 copy = fdset_put_dup(fds, m->notify_fd);
2256 fprintf(f, "notify-fd=%i\n", copy);
2257 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2260 if (m->kdbus_fd >= 0) {
2263 copy = fdset_put_dup(fds, m->kdbus_fd);
2267 fprintf(f, "kdbus-fd=%i\n", copy);
2270 bus_track_serialize(m->subscribed, f);
2274 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2282 r = unit_serialize(u, f, fds, !switching_root);
2289 assert(m->n_reloading > 0);
2295 r = bus_fdset_add_all(m, fds);
2302 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2308 log_debug("Deserializing state...");
2313 char line[LINE_MAX], *l;
2315 if (!fgets(line, sizeof(line), f)) {
2330 if (startswith(l, "current-job-id=")) {
2333 if (safe_atou32(l+15, &id) < 0)
2334 log_warning("Failed to parse current job id value %s", l+15);
2336 m->current_job_id = MAX(m->current_job_id, id);
2338 } else if (startswith(l, "n-installed-jobs=")) {
2341 if (safe_atou32(l+17, &n) < 0)
2342 log_warning("Failed to parse installed jobs counter %s", l+17);
2344 m->n_installed_jobs += n;
2346 } else if (startswith(l, "n-failed-jobs=")) {
2349 if (safe_atou32(l+14, &n) < 0)
2350 log_warning("Failed to parse failed jobs counter %s", l+14);
2352 m->n_failed_jobs += n;
2354 } else if (startswith(l, "taint-usr=")) {
2357 b = parse_boolean(l+10);
2359 log_warning("Failed to parse taint /usr flag %s", l+10);
2361 m->taint_usr = m->taint_usr || b;
2363 } else if (startswith(l, "firmware-timestamp="))
2364 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2365 else if (startswith(l, "loader-timestamp="))
2366 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2367 else if (startswith(l, "kernel-timestamp="))
2368 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2369 else if (startswith(l, "initrd-timestamp="))
2370 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2371 else if (startswith(l, "userspace-timestamp="))
2372 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2373 else if (startswith(l, "finish-timestamp="))
2374 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2375 else if (startswith(l, "security-start-timestamp="))
2376 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2377 else if (startswith(l, "security-finish-timestamp="))
2378 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2379 else if (startswith(l, "generators-start-timestamp="))
2380 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2381 else if (startswith(l, "generators-finish-timestamp="))
2382 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2383 else if (startswith(l, "units-load-start-timestamp="))
2384 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2385 else if (startswith(l, "units-load-finish-timestamp="))
2386 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2387 else if (startswith(l, "env=")) {
2388 _cleanup_free_ char *uce = NULL;
2391 uce = cunescape(l+4);
2397 e = strv_env_set(m->environment, uce);
2403 strv_free(m->environment);
2406 } else if (startswith(l, "notify-fd=")) {
2409 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2410 log_warning("Failed to parse notify fd: %s", l + 10);
2412 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2413 safe_close(m->notify_fd);
2414 m->notify_fd = fdset_remove(fds, fd);
2417 } else if (startswith(l, "notify-socket=")) {
2426 free(m->notify_socket);
2427 m->notify_socket = n;
2429 } else if (startswith(l, "kdbus-fd=")) {
2432 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2433 log_warning("Failed to parse kdbus fd: %s", l + 9);
2435 safe_close(m->kdbus_fd);
2436 m->kdbus_fd = fdset_remove(fds, fd);
2439 } else if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0)
2440 log_warning("Unknown serialization item '%s'", l);
2445 char name[UNIT_NAME_MAX+2];
2448 if (!fgets(name, sizeof(name), f)) {
2459 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2463 r = unit_deserialize(u, f, fds);
2472 assert(m->n_reloading > 0);
2478 int manager_reload(Manager *m) {
2480 _cleanup_fclose_ FILE *f = NULL;
2481 _cleanup_fdset_free_ FDSet *fds = NULL;
2485 r = manager_open_serialization(m, &f);
2490 bus_manager_send_reloading(m, true);
2498 r = manager_serialize(m, f, fds, false);
2504 if (fseeko(f, 0, SEEK_SET) < 0) {
2509 /* From here on there is no way back. */
2510 manager_clear_jobs_and_units(m);
2511 manager_undo_generators(m);
2512 lookup_paths_free(&m->lookup_paths);
2514 /* Find new unit paths */
2515 manager_run_generators(m);
2517 q = lookup_paths_init(
2518 &m->lookup_paths, m->running_as, true,
2520 m->generator_unit_path,
2521 m->generator_unit_path_early,
2522 m->generator_unit_path_late);
2526 manager_build_unit_path_cache(m);
2528 /* First, enumerate what we can from all config files */
2529 q = manager_enumerate(m);
2533 /* Second, deserialize our stored data */
2534 q = manager_deserialize(m, f, fds);
2541 /* Re-register notify_fd as event source */
2542 q = manager_setup_notify(m);
2546 /* Third, fire things up! */
2547 q = manager_coldplug(m);
2551 assert(m->n_reloading > 0);
2554 m->send_reloading_done = true;
2559 bool manager_is_reloading_or_reexecuting(Manager *m) {
2562 return m->n_reloading != 0;
2565 void manager_reset_failed(Manager *m) {
2571 HASHMAP_FOREACH(u, m->units, i)
2572 unit_reset_failed(u);
2575 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2581 /* Returns true if the unit is inactive or going down */
2582 u = manager_get_unit(m, name);
2586 return unit_inactive_or_pending(u);
2589 static void manager_notify_finished(Manager *m) {
2590 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2591 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2596 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2598 /* Note that m->kernel_usec.monotonic is always at 0,
2599 * and m->firmware_usec.monotonic and
2600 * m->loader_usec.monotonic should be considered
2601 * negative values. */
2603 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2604 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2605 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2606 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2608 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2610 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2611 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2613 log_struct(LOG_INFO,
2614 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2615 "KERNEL_USEC="USEC_FMT, kernel_usec,
2616 "INITRD_USEC="USEC_FMT, initrd_usec,
2617 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2618 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2619 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2620 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2621 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2622 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2625 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2628 log_struct(LOG_INFO,
2629 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2630 "KERNEL_USEC="USEC_FMT, kernel_usec,
2631 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2632 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2633 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2634 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2635 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2639 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2640 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2642 log_struct(LOG_INFO,
2643 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2644 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2645 "MESSAGE=Startup finished in %s.",
2646 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2650 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2654 "STATUS=Startup finished in %s.",
2655 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2658 void manager_check_finished(Manager *m) {
2664 if (m->n_running_jobs == 0)
2665 m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
2667 if (hashmap_size(m->jobs) > 0) {
2669 if (m->jobs_in_progress_event_source)
2670 sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
2675 manager_flip_auto_status(m, false);
2677 /* Notify Type=idle units that we are done now */
2678 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2679 manager_close_idle_pipe(m);
2681 /* Turn off confirm spawn now */
2682 m->confirm_spawn = false;
2684 /* No need to update ask password status when we're going non-interactive */
2685 manager_close_ask_password(m);
2687 /* This is no longer the first boot */
2688 manager_set_first_boot(m, false);
2690 if (dual_timestamp_is_set(&m->finish_timestamp))
2693 dual_timestamp_get(&m->finish_timestamp);
2695 manager_notify_finished(m);
2697 SET_FOREACH(u, m->startup_units, i)
2699 cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
2702 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2713 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2714 /* systemd --system, not running --test */
2716 p = strappend("/run/systemd/", name);
2720 r = mkdir_p_label(p, 0755);
2722 log_error("Failed to create generator directory %s: %s",
2727 } else if (m->running_as == SYSTEMD_USER) {
2728 const char *s = NULL;
2730 s = getenv("XDG_RUNTIME_DIR");
2733 p = strjoin(s, "/systemd/", name, NULL);
2737 r = mkdir_p_label(p, 0755);
2739 log_error("Failed to create generator directory %s: %s",
2745 /* systemd --system --test */
2747 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2752 log_error("Failed to create generator directory %s: %m",
2763 static void trim_generator_dir(Manager *m, char **generator) {
2770 if (rmdir(*generator) >= 0) {
2778 void manager_run_generators(Manager *m) {
2779 _cleanup_closedir_ DIR *d = NULL;
2780 const char *generator_path;
2781 const char *argv[5];
2789 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2790 d = opendir(generator_path);
2792 if (errno == ENOENT)
2795 log_error("Failed to enumerate generator directory %s: %m",
2800 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2804 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2808 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2812 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2813 argv[1] = m->generator_unit_path;
2814 argv[2] = m->generator_unit_path_early;
2815 argv[3] = m->generator_unit_path_late;
2818 RUN_WITH_UMASK(0022)
2819 execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
2822 trim_generator_dir(m, &m->generator_unit_path);
2823 trim_generator_dir(m, &m->generator_unit_path_early);
2824 trim_generator_dir(m, &m->generator_unit_path_late);
2827 static void remove_generator_dir(Manager *m, char **generator) {
2834 strv_remove(m->lookup_paths.unit_path, *generator);
2835 rm_rf(*generator, false, true, false);
2841 void manager_undo_generators(Manager *m) {
2844 remove_generator_dir(m, &m->generator_unit_path);
2845 remove_generator_dir(m, &m->generator_unit_path_early);
2846 remove_generator_dir(m, &m->generator_unit_path_late);
2849 int manager_environment_add(Manager *m, char **minus, char **plus) {
2850 char **a = NULL, **b = NULL, **l;
2855 if (!strv_isempty(minus)) {
2856 a = strv_env_delete(l, 1, minus);
2863 if (!strv_isempty(plus)) {
2864 b = strv_env_merge(2, l, plus);
2873 if (m->environment != l)
2874 strv_free(m->environment);
2881 manager_clean_environment(m);
2882 strv_sort(m->environment);
2887 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2892 for (i = 0; i < _RLIMIT_MAX; i++) {
2893 if (!default_rlimit[i])
2896 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2904 void manager_recheck_journal(Manager *m) {
2909 if (m->running_as != SYSTEMD_SYSTEM)
2912 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2913 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2914 log_close_journal();
2918 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2919 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2920 log_close_journal();
2924 /* Hmm, OK, so the socket is fully up and the service is up
2925 * too, then let's make use of the thing. */
2929 void manager_set_show_status(Manager *m, ShowStatus mode) {
2931 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
2933 if (m->running_as != SYSTEMD_SYSTEM)
2936 m->show_status = mode;
2939 touch("/run/systemd/show-status");
2941 unlink("/run/systemd/show-status");
2944 static bool manager_get_show_status(Manager *m, StatusType type) {
2947 if (m->running_as != SYSTEMD_SYSTEM)
2950 if (m->no_console_output)
2953 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
2956 /* If we cannot find out the status properly, just proceed. */
2957 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
2960 if (m->show_status > 0)
2963 /* If Plymouth is running make sure we show the status, so
2964 * that there's something nice to see when people press Esc */
2965 return plymouth_running();
2968 void manager_set_first_boot(Manager *m, bool b) {
2971 if (m->running_as != SYSTEMD_SYSTEM)
2977 touch("/run/systemd/first-boot");
2979 unlink("/run/systemd/first-boot");
2982 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
2985 if (!manager_get_show_status(m, type))
2988 /* XXX We should totally drop the check for ephemeral here
2989 * and thus effectively make 'Type=idle' pointless. */
2990 if (type == STATUS_TYPE_EPHEMERAL && m->n_on_console > 0)
2993 va_start(ap, format);
2994 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
2998 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
2999 _cleanup_free_ char *p = NULL;
3007 p = unit_name_from_path(path, suffix);
3011 found = manager_get_unit(m, p);
3021 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3022 char p[strlen(path)+1];
3028 path_kill_slashes(p);
3030 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3033 const char *manager_get_runtime_prefix(Manager *m) {
3036 return m->running_as == SYSTEMD_SYSTEM ?
3038 getenv("XDG_RUNTIME_DIR");
3041 ManagerState manager_state(Manager *m) {
3046 /* Did we ever finish booting? If not then we are still starting up */
3047 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3049 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3050 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3051 return MANAGER_INITIALIZING;
3053 return MANAGER_STARTING;
3056 /* Is the special shutdown target queued? If so, we are in shutdown state */
3057 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
3058 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
3059 return MANAGER_STOPPING;
3061 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3062 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3063 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3064 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3065 return MANAGER_MAINTENANCE;
3067 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3068 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3069 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3070 return MANAGER_MAINTENANCE;
3072 /* Are there any failed units? If so, we are in degraded mode */
3073 if (set_size(m->failed_units) > 0)
3074 return MANAGER_DEGRADED;
3076 return MANAGER_RUNNING;
3079 static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
3080 [MANAGER_INITIALIZING] = "initializing",
3081 [MANAGER_STARTING] = "starting",
3082 [MANAGER_RUNNING] = "running",
3083 [MANAGER_DEGRADED] = "degraded",
3084 [MANAGER_MAINTENANCE] = "maintenance",
3085 [MANAGER_STOPPING] = "stopping",
3088 DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);