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/>.
27 #include <sys/inotify.h>
28 #include <sys/epoll.h>
29 #include <sys/reboot.h>
30 #include <sys/ioctl.h>
34 #include <sys/timerfd.h>
40 #include "sd-daemon.h"
41 #include "sd-messages.h"
44 #include "transaction.h"
51 #include "ratelimit.h"
52 #include "locale-setup.h"
53 #include "unit-name.h"
55 #include "path-lookup.h"
57 #include "exit-status.h"
60 #include "path-util.h"
62 #include "boot-timestamps.h"
64 #include "bus-common-errors.h"
65 #include "bus-error.h"
68 #include "dbus-unit.h"
70 #include "dbus-manager.h"
71 #include "bus-kernel.h"
72 #include "time-util.h"
74 /* Initial delay and the interval for printing status messages about running jobs */
75 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
76 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
77 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
79 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
80 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
81 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
82 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
83 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
84 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
85 static int manager_run_generators(Manager *m);
86 static void manager_undo_generators(Manager *m);
88 static void manager_watch_jobs_in_progress(Manager *m) {
93 if (m->jobs_in_progress_event_source)
96 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
97 (void) sd_event_add_time(
99 &m->jobs_in_progress_event_source,
102 manager_dispatch_jobs_in_progress, m);
105 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
107 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
110 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
111 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
115 p = mempset(p, ' ', pos-2);
116 p = stpcpy(p, ANSI_RED_ON);
120 if (pos > 0 && pos <= width) {
121 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
125 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
128 p = stpcpy(p, ANSI_RED_ON);
131 p = mempset(p, ' ', width-1-pos);
132 strcpy(p, ANSI_HIGHLIGHT_OFF);
136 void manager_flip_auto_status(Manager *m, bool enable) {
140 if (m->show_status == SHOW_STATUS_AUTO)
141 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
143 if (m->show_status == SHOW_STATUS_TEMPORARY)
144 manager_set_show_status(m, SHOW_STATUS_AUTO);
148 static void manager_print_jobs_in_progress(Manager *m) {
149 _cleanup_free_ char *job_of_n = NULL;
152 unsigned counter = 0, print_nr;
153 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
155 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
159 assert(m->n_running_jobs > 0);
161 manager_flip_auto_status(m, true);
163 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
165 HASHMAP_FOREACH(j, m->jobs, i)
166 if (j->state == JOB_RUNNING && counter++ == print_nr)
169 /* m->n_running_jobs must be consistent with the contents of m->jobs,
170 * so the above loop must have succeeded in finding j. */
171 assert(counter == print_nr + 1);
174 cylon_pos = m->jobs_in_progress_iteration % 14;
176 cylon_pos = 14 - cylon_pos;
177 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
179 m->jobs_in_progress_iteration++;
181 if (m->n_running_jobs > 1) {
182 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
186 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
187 if (job_get_timeout(j, &x) > 0)
188 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
190 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
191 "%sA %s job is running for %s (%s / %s)",
193 job_type_to_string(j->type),
194 unit_description(j->unit),
198 static int have_ask_password(void) {
199 _cleanup_closedir_ DIR *dir;
201 dir = opendir("/run/systemd/ask-password");
214 if (!de && errno != 0)
219 if (startswith(de->d_name, "ask."))
224 static int manager_dispatch_ask_password_fd(sd_event_source *source,
225 int fd, uint32_t revents, void *userdata) {
226 Manager *m = userdata;
232 m->have_ask_password = have_ask_password();
233 if (m->have_ask_password < 0)
234 /* Log error but continue. Negative have_ask_password
235 * is treated as unknown status. */
236 log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
241 static void manager_close_ask_password(Manager *m) {
244 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
245 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
246 m->have_ask_password = -EINVAL;
249 static int manager_check_ask_password(Manager *m) {
254 if (!m->ask_password_event_source) {
255 assert(m->ask_password_inotify_fd < 0);
257 mkdir_p_label("/run/systemd/ask-password", 0755);
259 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
260 if (m->ask_password_inotify_fd < 0)
261 return log_error_errno(errno, "inotify_init1() failed: %m");
263 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
264 log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
265 manager_close_ask_password(m);
269 r = sd_event_add_io(m->event, &m->ask_password_event_source,
270 m->ask_password_inotify_fd, EPOLLIN,
271 manager_dispatch_ask_password_fd, m);
273 log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
274 manager_close_ask_password(m);
278 /* Queries might have been added meanwhile... */
279 manager_dispatch_ask_password_fd(m->ask_password_event_source,
280 m->ask_password_inotify_fd, EPOLLIN, m);
283 return m->have_ask_password;
286 static int manager_watch_idle_pipe(Manager *m) {
291 if (m->idle_pipe_event_source)
294 if (m->idle_pipe[2] < 0)
297 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
299 return log_error_errno(r, "Failed to watch idle pipe: %m");
304 static void manager_close_idle_pipe(Manager *m) {
307 safe_close_pair(m->idle_pipe);
308 safe_close_pair(m->idle_pipe + 2);
311 static int manager_setup_time_change(Manager *m) {
314 /* We only care for the cancellation event, hence we set the
315 * timeout to the latest possible value. */
316 struct itimerspec its = {
317 .it_value.tv_sec = TIME_T_MAX,
321 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
326 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
327 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
329 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
330 if (m->time_change_fd < 0)
331 return log_error_errno(errno, "Failed to create timerfd: %m");
333 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
334 log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
335 m->time_change_fd = safe_close(m->time_change_fd);
339 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
341 return log_error_errno(r, "Failed to create time change event source: %m");
343 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
348 static int enable_special_signals(Manager *m) {
349 _cleanup_close_ int fd = -1;
353 /* Enable that we get SIGINT on control-alt-del. In containers
354 * this will fail with EPERM (older) or EINVAL (newer), so
356 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
357 log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
359 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
361 /* Support systems without virtual console */
363 log_warning_errno(errno, "Failed to open /dev/tty0: %m");
365 /* Enable that we get SIGWINCH on kbrequest */
366 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
367 log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
373 static int manager_setup_signals(Manager *m) {
374 struct sigaction sa = {
375 .sa_handler = SIG_DFL,
376 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
383 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
385 /* We make liberal use of realtime signals here. On
386 * Linux/glibc we have 30 of them (with the exception of Linux
387 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
390 assert_se(sigemptyset(&mask) == 0);
391 sigset_add_many(&mask,
392 SIGCHLD, /* Child died */
393 SIGTERM, /* Reexecute daemon */
394 SIGHUP, /* Reload configuration */
395 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
396 SIGUSR2, /* systemd: dump status */
397 SIGINT, /* Kernel sends us this on control-alt-del */
398 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
399 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
401 SIGRTMIN+0, /* systemd: start default.target */
402 SIGRTMIN+1, /* systemd: isolate rescue.target */
403 SIGRTMIN+2, /* systemd: isolate emergency.target */
404 SIGRTMIN+3, /* systemd: start halt.target */
405 SIGRTMIN+4, /* systemd: start poweroff.target */
406 SIGRTMIN+5, /* systemd: start reboot.target */
407 SIGRTMIN+6, /* systemd: start kexec.target */
409 /* ... space for more special targets ... */
411 SIGRTMIN+13, /* systemd: Immediate halt */
412 SIGRTMIN+14, /* systemd: Immediate poweroff */
413 SIGRTMIN+15, /* systemd: Immediate reboot */
414 SIGRTMIN+16, /* systemd: Immediate kexec */
416 /* ... space for more immediate system state changes ... */
418 SIGRTMIN+20, /* systemd: enable status messages */
419 SIGRTMIN+21, /* systemd: disable status messages */
420 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
421 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
422 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
424 /* .. one free signal here ... */
426 #if !defined(__hppa64__) && !defined(__hppa__)
427 /* Apparently Linux on hppa has fewer RT
428 * signals (SIGRTMAX is SIGRTMIN+25 there),
429 * hence let's not try to make use of them
430 * here. Since these commands are accessible
431 * by different means and only really a safety
432 * net, the missing functionality on hppa
433 * shouldn't matter. */
435 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
436 SIGRTMIN+27, /* systemd: set log target to console */
437 SIGRTMIN+28, /* systemd: set log target to kmsg */
438 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
440 /* ... one free signal here SIGRTMIN+30 ... */
443 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
445 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
446 if (m->signal_fd < 0)
449 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
453 /* Process signals a bit earlier than the rest of things, but
454 * later than notify_fd processing, so that the notify
455 * processing can still figure out to which process/service a
456 * message belongs, before we reap the process. */
457 r = sd_event_source_set_priority(m->signal_event_source, -5);
461 if (m->running_as == SYSTEMD_SYSTEM)
462 return enable_special_signals(m);
467 static void manager_clean_environment(Manager *m) {
470 /* Let's remove some environment variables that we
471 * need ourselves to communicate with our clients */
484 static int manager_default_environment(Manager *m) {
487 if (m->running_as == SYSTEMD_SYSTEM) {
488 /* The system manager always starts with a clean
489 * environment for its children. It does not import
490 * the kernel or the parents exported variables.
492 * The initial passed environ is untouched to keep
493 * /proc/self/environ valid; it is used for tagging
494 * the init process inside containers. */
495 m->environment = strv_new("PATH=" DEFAULT_PATH,
498 /* Import locale variables LC_*= from configuration */
499 locale_setup(&m->environment);
501 /* The user manager passes its own environment
502 * along to its children. */
503 m->environment = strv_copy(environ);
509 manager_clean_environment(m);
510 strv_sort(m->environment);
515 int manager_new(SystemdRunningAs running_as, bool test_run, Manager **_m) {
520 assert(running_as >= 0);
521 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
523 m = new0(Manager, 1);
528 if (running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
529 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
532 m->running_as = running_as;
533 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
534 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
536 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
538 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 = m->utab_inotify_fd = -1;
539 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
541 m->ask_password_inotify_fd = -1;
542 m->have_ask_password = -EINVAL; /* we don't know */
544 m->test_run = test_run;
546 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
547 RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
549 r = manager_default_environment(m);
553 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
557 r = hashmap_ensure_allocated(&m->jobs, NULL);
561 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
565 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
569 r = set_ensure_allocated(&m->startup_units, NULL);
573 r = set_ensure_allocated(&m->failed_units, NULL);
577 r = sd_event_default(&m->event);
581 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
585 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
589 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
593 r = manager_setup_signals(m);
597 r = manager_setup_cgroup(m);
601 r = manager_setup_time_change(m);
605 m->udev = udev_new();
611 /* Note that we set up neither kdbus, nor the notify fd
612 * here. We do that after deserialization, since they might
613 * have gotten serialized across the reexec. */
615 m->taint_usr = dir_is_empty("/usr") > 0;
625 static int manager_setup_notify(Manager *m) {
631 if (m->notify_fd < 0) {
632 _cleanup_close_ int fd = -1;
633 union sockaddr_union sa = {
634 .sa.sa_family = AF_UNIX,
636 static const int one = 1;
638 /* First free all secondary fields */
639 free(m->notify_socket);
640 m->notify_socket = NULL;
641 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
643 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
645 return log_error_errno(errno, "Failed to allocate notification socket: %m");
647 if (m->running_as == SYSTEMD_SYSTEM)
648 m->notify_socket = strdup("/run/systemd/notify");
652 e = getenv("XDG_RUNTIME_DIR");
654 log_error_errno(errno, "XDG_RUNTIME_DIR is not set: %m");
658 m->notify_socket = strappend(e, "/systemd/notify");
660 if (!m->notify_socket)
663 (void) mkdir_parents_label(m->notify_socket, 0755);
664 (void) unlink(m->notify_socket);
666 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
667 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
669 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
671 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
673 return log_error_errno(errno, "SO_PASSCRED failed: %m");
678 log_debug("Using notification socket %s", m->notify_socket);
681 if (!m->notify_event_source) {
682 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
684 return log_error_errno(r, "Failed to allocate notify event source: %m");
686 /* Process signals a bit earlier than SIGCHLD, so that we can
687 * still identify to which service an exit message belongs */
688 r = sd_event_source_set_priority(m->notify_event_source, -7);
690 return log_error_errno(r, "Failed to set priority of notify event source: %m");
696 static int manager_setup_kdbus(Manager *m) {
698 _cleanup_free_ char *p = NULL;
702 if (m->test_run || m->kdbus_fd >= 0)
705 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
706 bus_kernel_fix_attach_mask();
708 m->kdbus_fd = bus_kernel_create_bus(
709 m->running_as == SYSTEMD_SYSTEM ? "system" : "user",
710 m->running_as == SYSTEMD_SYSTEM, &p);
713 return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m");
715 log_debug("Successfully set up kdbus on %s", p);
721 static int manager_connect_bus(Manager *m, bool reexecuting) {
722 bool try_bus_connect;
732 (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
734 /* Try to connect to the busses, if possible. */
735 return bus_init(m, try_bus_connect);
738 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
744 while ((u = m->cleanup_queue)) {
745 assert(u->in_cleanup_queue);
755 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
756 GC_OFFSET_UNSURE, /* No clue */
757 GC_OFFSET_GOOD, /* We still need this unit */
758 GC_OFFSET_BAD, /* We don't need this unit anymore */
762 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
769 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
770 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
771 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
774 if (u->in_cleanup_queue)
777 if (unit_check_gc(u))
780 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
784 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
785 unit_gc_sweep(other, gc_marker);
787 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
790 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
797 /* We were unable to find anything out about this entry, so
798 * let's investigate it later */
799 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
800 unit_add_to_gc_queue(u);
804 /* We definitely know that this one is not useful anymore, so
805 * let's mark it for deletion */
806 u->gc_marker = gc_marker + GC_OFFSET_BAD;
807 unit_add_to_cleanup_queue(u);
811 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
814 static unsigned manager_dispatch_gc_queue(Manager *m) {
821 /* log_debug("Running GC..."); */
823 m->gc_marker += _GC_OFFSET_MAX;
824 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
827 gc_marker = m->gc_marker;
829 while ((u = m->gc_queue)) {
830 assert(u->in_gc_queue);
832 unit_gc_sweep(u, gc_marker);
834 LIST_REMOVE(gc_queue, m->gc_queue, u);
835 u->in_gc_queue = false;
839 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
840 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
842 log_unit_debug(u->id, "Collecting %s", u->id);
843 u->gc_marker = gc_marker + GC_OFFSET_BAD;
844 unit_add_to_cleanup_queue(u);
848 m->n_in_gc_queue = 0;
853 static void manager_clear_jobs_and_units(Manager *m) {
858 while ((u = hashmap_first(m->units)))
861 manager_dispatch_cleanup_queue(m);
863 assert(!m->load_queue);
864 assert(!m->run_queue);
865 assert(!m->dbus_unit_queue);
866 assert(!m->dbus_job_queue);
867 assert(!m->cleanup_queue);
868 assert(!m->gc_queue);
870 assert(hashmap_isempty(m->jobs));
871 assert(hashmap_isempty(m->units));
874 m->n_running_jobs = 0;
877 Manager* manager_free(Manager *m) {
884 manager_clear_jobs_and_units(m);
886 for (c = 0; c < _UNIT_TYPE_MAX; c++)
887 if (unit_vtable[c]->shutdown)
888 unit_vtable[c]->shutdown(m);
890 /* If we reexecute ourselves, we keep the root cgroup
892 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
894 manager_undo_generators(m);
898 hashmap_free(m->units);
899 hashmap_free(m->jobs);
900 hashmap_free(m->watch_pids1);
901 hashmap_free(m->watch_pids2);
902 hashmap_free(m->watch_bus);
904 set_free(m->startup_units);
905 set_free(m->failed_units);
907 sd_event_source_unref(m->signal_event_source);
908 sd_event_source_unref(m->notify_event_source);
909 sd_event_source_unref(m->time_change_event_source);
910 sd_event_source_unref(m->jobs_in_progress_event_source);
911 sd_event_source_unref(m->idle_pipe_event_source);
912 sd_event_source_unref(m->run_queue_event_source);
914 safe_close(m->signal_fd);
915 safe_close(m->notify_fd);
916 safe_close(m->time_change_fd);
917 safe_close(m->kdbus_fd);
919 manager_close_ask_password(m);
921 manager_close_idle_pipe(m);
924 sd_event_unref(m->event);
926 free(m->notify_socket);
928 lookup_paths_free(&m->lookup_paths);
929 strv_free(m->environment);
931 hashmap_free(m->cgroup_unit);
932 set_free_free(m->unit_path_cache);
934 free(m->switch_root);
935 free(m->switch_root_init);
937 for (i = 0; i < _RLIMIT_MAX; i++)
940 assert(hashmap_isempty(m->units_requiring_mounts_for));
941 hashmap_free(m->units_requiring_mounts_for);
947 int manager_enumerate(Manager *m) {
953 /* Let's ask every type to load all units from disk/kernel
954 * that it might know */
955 for (c = 0; c < _UNIT_TYPE_MAX; c++) {
958 if (unit_vtable[c]->supported && !unit_vtable[c]->supported(m)) {
959 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
963 if (!unit_vtable[c]->enumerate)
966 q = unit_vtable[c]->enumerate(m);
971 manager_dispatch_load_queue(m);
975 static int manager_coldplug(Manager *m) {
982 * Some unit types tend to spawn jobs or check other units' state
983 * during coldplug. This is wrong because it is undefined whether the
984 * units in question have been already coldplugged (i. e. their state
985 * restored). This way, we can easily re-start an already started unit
986 * or otherwise make a wrong decision based on the unit's state.
988 * Solve this by providing a way for coldplug functions to defer
989 * such actions until after all units have been coldplugged.
991 * We store Unit* -> int(*)(Unit*).
993 * https://bugs.freedesktop.org/show_bug.cgi?id=88401
995 _cleanup_hashmap_free_ Hashmap *deferred_work = NULL;
1000 deferred_work = hashmap_new(&trivial_hash_ops);
1004 /* Then, let's set up their initial state. */
1005 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1008 /* ignore aliases */
1012 q = unit_coldplug(u, deferred_work);
1017 /* After coldplugging and setting up initial state of the units,
1018 * let's perform operations which spawn jobs or query units' state. */
1019 HASHMAP_FOREACH_KEY(proc, u, deferred_work, i) {
1030 static void manager_build_unit_path_cache(Manager *m) {
1032 _cleanup_closedir_ DIR *d = NULL;
1037 set_free_free(m->unit_path_cache);
1039 m->unit_path_cache = set_new(&string_hash_ops);
1040 if (!m->unit_path_cache) {
1041 log_error("Failed to allocate unit path cache.");
1045 /* This simply builds a list of files we know exist, so that
1046 * we don't always have to go to disk */
1048 STRV_FOREACH(i, m->lookup_paths.unit_path) {
1053 if (errno != ENOENT)
1054 log_error_errno(errno, "Failed to open directory %s: %m", *i);
1058 while ((de = readdir(d))) {
1061 if (hidden_file(de->d_name))
1064 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
1070 r = set_consume(m->unit_path_cache, p);
1082 log_error_errno(r, "Failed to build unit path cache: %m");
1084 set_free_free(m->unit_path_cache);
1085 m->unit_path_cache = NULL;
1089 static int manager_distribute_fds(Manager *m, FDSet *fds) {
1096 HASHMAP_FOREACH(u, m->units, i) {
1098 if (fdset_size(fds) <= 0)
1101 if (UNIT_VTABLE(u)->distribute_fds) {
1102 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
1111 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1116 dual_timestamp_get(&m->generators_start_timestamp);
1117 r = manager_run_generators(m);
1118 dual_timestamp_get(&m->generators_finish_timestamp);
1122 r = lookup_paths_init(
1123 &m->lookup_paths, m->running_as, true,
1125 m->generator_unit_path,
1126 m->generator_unit_path_early,
1127 m->generator_unit_path_late);
1131 manager_build_unit_path_cache(m);
1133 /* If we will deserialize make sure that during enumeration
1134 * this is already known, so we increase the counter here
1139 /* First, enumerate what we can from all config files */
1140 dual_timestamp_get(&m->units_load_start_timestamp);
1141 r = manager_enumerate(m);
1142 dual_timestamp_get(&m->units_load_finish_timestamp);
1144 /* Second, deserialize if there is something to deserialize */
1146 r = manager_deserialize(m, serialization, fds);
1148 /* Any fds left? Find some unit which wants them. This is
1149 * useful to allow container managers to pass some file
1150 * descriptors to us pre-initialized. This enables
1151 * socket-based activation of entire containers. */
1152 if (fdset_size(fds) > 0) {
1153 q = manager_distribute_fds(m, fds);
1154 if (q < 0 && r == 0)
1158 /* We might have deserialized the notify fd, but if we didn't
1159 * then let's create the bus now */
1160 q = manager_setup_notify(m);
1161 if (q < 0 && r == 0)
1164 /* We might have deserialized the kdbus control fd, but if we
1165 * didn't, then let's create the bus now. */
1166 manager_setup_kdbus(m);
1167 manager_connect_bus(m, !!serialization);
1168 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
1170 /* Third, fire things up! */
1171 q = manager_coldplug(m);
1172 if (q < 0 && r == 0)
1175 if (serialization) {
1176 assert(m->n_reloading > 0);
1179 /* Let's wait for the UnitNew/JobNew messages being
1180 * sent, before we notify that the reload is
1182 m->send_reloading_done = true;
1188 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1193 assert(type < _JOB_TYPE_MAX);
1195 assert(mode < _JOB_MODE_MAX);
1197 if (mode == JOB_ISOLATE && type != JOB_START)
1198 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
1200 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1201 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
1203 log_unit_debug(unit->id,
1204 "Trying to enqueue job %s/%s/%s", unit->id,
1205 job_type_to_string(type), job_mode_to_string(mode));
1207 job_type_collapse(&type, unit);
1209 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
1213 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
1214 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1215 mode == JOB_IGNORE_DEPENDENCIES, e);
1219 if (mode == JOB_ISOLATE) {
1220 r = transaction_add_isolate_jobs(tr, m);
1225 r = transaction_activate(tr, m, mode, e);
1229 log_unit_debug(unit->id,
1230 "Enqueued job %s/%s as %u", unit->id,
1231 job_type_to_string(type), (unsigned) tr->anchor_job->id);
1234 *_ret = tr->anchor_job;
1236 transaction_free(tr);
1240 transaction_abort(tr);
1241 transaction_free(tr);
1245 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1250 assert(type < _JOB_TYPE_MAX);
1252 assert(mode < _JOB_MODE_MAX);
1254 r = manager_load_unit(m, name, NULL, NULL, &unit);
1258 return manager_add_job(m, type, unit, mode, override, e, _ret);
1261 Job *manager_get_job(Manager *m, uint32_t id) {
1264 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1267 Unit *manager_get_unit(Manager *m, const char *name) {
1271 return hashmap_get(m->units, name);
1274 unsigned manager_dispatch_load_queue(Manager *m) {
1280 /* Make sure we are not run recursively */
1281 if (m->dispatching_load_queue)
1284 m->dispatching_load_queue = true;
1286 /* Dispatches the load queue. Takes a unit from the queue and
1287 * tries to load its data until the queue is empty */
1289 while ((u = m->load_queue)) {
1290 assert(u->in_load_queue);
1296 m->dispatching_load_queue = false;
1300 int manager_load_unit_prepare(
1312 assert(name || path);
1314 /* This will prepare the unit for loading, but not actually
1315 * load anything from disk. */
1317 if (path && !is_path(path))
1318 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
1321 name = basename(path);
1323 t = unit_name_to_type(name);
1325 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID))
1326 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
1328 ret = manager_get_unit(m, name);
1334 ret = unit_new(m, unit_vtable[t]->object_size);
1339 ret->fragment_path = strdup(path);
1340 if (!ret->fragment_path) {
1346 r = unit_add_name(ret, name);
1352 unit_add_to_load_queue(ret);
1353 unit_add_to_dbus_queue(ret);
1354 unit_add_to_gc_queue(ret);
1362 int manager_load_unit(
1373 /* This will load the service information files, but not actually
1374 * start any services or anything. */
1376 r = manager_load_unit_prepare(m, name, path, e, _ret);
1380 manager_dispatch_load_queue(m);
1383 *_ret = unit_follow_merge(*_ret);
1388 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1395 HASHMAP_FOREACH(j, s->jobs, i)
1396 job_dump(j, f, prefix);
1399 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1407 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1409 unit_dump(u, f, prefix);
1412 void manager_clear_jobs(Manager *m) {
1417 while ((j = hashmap_first(m->jobs)))
1418 /* No need to recurse. We're cancelling all jobs. */
1419 job_finish_and_invalidate(j, JOB_CANCELED, false);
1422 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1423 Manager *m = userdata;
1429 while ((j = m->run_queue)) {
1430 assert(j->installed);
1431 assert(j->in_run_queue);
1433 job_run_and_invalidate(j);
1436 if (m->n_running_jobs > 0)
1437 manager_watch_jobs_in_progress(m);
1439 if (m->n_on_console > 0)
1440 manager_watch_idle_pipe(m);
1445 static unsigned manager_dispatch_dbus_queue(Manager *m) {
1452 if (m->dispatching_dbus_queue)
1455 m->dispatching_dbus_queue = true;
1457 while ((u = m->dbus_unit_queue)) {
1458 assert(u->in_dbus_queue);
1460 bus_unit_send_change_signal(u);
1464 while ((j = m->dbus_job_queue)) {
1465 assert(j->in_dbus_queue);
1467 bus_job_send_change_signal(j);
1471 m->dispatching_dbus_queue = false;
1473 if (m->send_reloading_done) {
1474 m->send_reloading_done = false;
1476 bus_manager_send_reloading(m, false);
1479 if (m->queued_message)
1480 bus_send_queued_message(m);
1485 static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n, FDSet *fds) {
1486 _cleanup_strv_free_ char **tags = NULL;
1493 tags = strv_split(buf, "\n\r");
1499 log_unit_debug(u->id, "Got notification message for unit %s", u->id);
1501 if (UNIT_VTABLE(u)->notify_message)
1502 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
1505 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1506 Manager *m = userdata;
1511 assert(m->notify_fd == fd);
1513 if (revents != EPOLLIN) {
1514 log_warning("Got unexpected poll event for notify fd.");
1519 _cleanup_fdset_free_ FDSet *fds = NULL;
1520 char buf[NOTIFY_BUFFER_MAX+1];
1521 struct iovec iovec = {
1523 .iov_len = sizeof(buf)-1,
1526 struct cmsghdr cmsghdr;
1527 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
1528 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
1530 struct msghdr msghdr = {
1533 .msg_control = &control,
1534 .msg_controllen = sizeof(control),
1536 struct cmsghdr *cmsg;
1537 struct ucred *ucred = NULL;
1540 int *fd_array = NULL;
1543 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
1545 if (errno == EAGAIN || errno == EINTR)
1551 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1552 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1554 fd_array = (int*) CMSG_DATA(cmsg);
1555 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
1557 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1558 cmsg->cmsg_type == SCM_CREDENTIALS &&
1559 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
1561 ucred = (struct ucred*) CMSG_DATA(cmsg);
1568 r = fdset_new_array(&fds, fd_array, n_fds);
1570 close_many(fd_array, n_fds);
1575 if (!ucred || ucred->pid <= 0) {
1576 log_warning("Received notify message without valid credentials. Ignoring.");
1580 if ((size_t) n >= sizeof(buf)) {
1581 log_warning("Received notify message exceeded maximum size. Ignoring.");
1587 /* Notify every unit that might be interested, but try
1588 * to avoid notifying the same one multiple times. */
1589 u1 = manager_get_unit_by_pid(m, ucred->pid);
1591 manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
1595 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
1596 if (u2 && u2 != u1) {
1597 manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
1601 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
1602 if (u3 && u3 != u2 && u3 != u1) {
1603 manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
1608 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
1610 if (fdset_size(fds) > 0)
1611 log_warning("Got auxiliary fds with notification message, closing all.");
1617 static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
1622 log_unit_debug(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
1624 unit_unwatch_pid(u, si->si_pid);
1625 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1628 static int manager_dispatch_sigchld(Manager *m) {
1634 /* First we call waitd() for a PID and do not reap the
1635 * zombie. That way we can still access /proc/$PID for
1636 * it while it is a zombie. */
1637 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1639 if (errno == ECHILD)
1651 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1652 _cleanup_free_ char *name = NULL;
1655 get_process_comm(si.si_pid, &name);
1657 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1658 si.si_pid, strna(name),
1659 sigchld_code_to_string(si.si_code),
1661 strna(si.si_code == CLD_EXITED
1662 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1663 : signal_to_string(si.si_status)));
1665 /* And now figure out the unit this belongs
1666 * to, it might be multiple... */
1667 u1 = manager_get_unit_by_pid(m, si.si_pid);
1669 invoke_sigchld_event(m, u1, &si);
1670 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid));
1672 invoke_sigchld_event(m, u2, &si);
1673 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid));
1674 if (u3 && u3 != u2 && u3 != u1)
1675 invoke_sigchld_event(m, u3, &si);
1678 /* And now, we actually reap the zombie. */
1679 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1690 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1691 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1694 log_unit_debug(name, "Activating special unit %s", name);
1696 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1698 log_unit_error(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
1703 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1704 Manager *m = userdata;
1706 struct signalfd_siginfo sfsi;
1707 bool sigchld = false;
1710 assert(m->signal_fd == fd);
1712 if (revents != EPOLLIN) {
1713 log_warning("Got unexpected events from signal file descriptor.");
1718 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
1719 if (n != sizeof(sfsi)) {
1724 if (errno == EINTR || errno == EAGAIN)
1730 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
1731 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
1732 ? LOG_DEBUG : LOG_INFO,
1735 switch (sfsi.ssi_signo) {
1742 if (m->running_as == SYSTEMD_SYSTEM) {
1743 /* This is for compatibility with the
1744 * original sysvinit */
1745 m->exit_code = MANAGER_REEXECUTE;
1752 if (m->running_as == SYSTEMD_SYSTEM) {
1754 /* If the user presses C-A-D more than
1755 * 7 times within 2s, we reboot
1758 if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
1759 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1761 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1762 status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1763 m->exit_code = MANAGER_REBOOT;
1769 /* Run the exit target if there is one, if not, just exit. */
1770 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1771 m->exit_code = MANAGER_EXIT;
1778 if (m->running_as == SYSTEMD_SYSTEM)
1779 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1781 /* This is a nop on non-init */
1785 if (m->running_as == SYSTEMD_SYSTEM)
1786 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1788 /* This is a nop on non-init */
1794 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1796 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1797 log_info("Trying to reconnect to bus...");
1801 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1802 log_info("Loading D-Bus service...");
1803 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1810 _cleanup_free_ char *dump = NULL;
1811 _cleanup_fclose_ FILE *f = NULL;
1814 f = open_memstream(&dump, &size);
1816 log_warning("Failed to allocate memory stream.");
1820 manager_dump_units(m, f, "\t");
1821 manager_dump_jobs(m, f, "\t");
1824 log_warning("Failed to write status stream");
1829 log_warning("Failed to flush status stream");
1833 log_dump(LOG_INFO, dump);
1838 m->exit_code = MANAGER_RELOAD;
1843 /* Starting SIGRTMIN+0 */
1844 static const char * const target_table[] = {
1845 [0] = SPECIAL_DEFAULT_TARGET,
1846 [1] = SPECIAL_RESCUE_TARGET,
1847 [2] = SPECIAL_EMERGENCY_TARGET,
1848 [3] = SPECIAL_HALT_TARGET,
1849 [4] = SPECIAL_POWEROFF_TARGET,
1850 [5] = SPECIAL_REBOOT_TARGET,
1851 [6] = SPECIAL_KEXEC_TARGET
1854 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1855 static const ManagerExitCode code_table[] = {
1857 [1] = MANAGER_POWEROFF,
1858 [2] = MANAGER_REBOOT,
1862 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1863 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1864 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1865 manager_start_target(m, target_table[idx],
1866 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1870 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1871 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1872 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1876 switch (sfsi.ssi_signo - SIGRTMIN) {
1879 log_debug("Enabling showing of status.");
1880 manager_set_show_status(m, SHOW_STATUS_YES);
1884 log_debug("Disabling showing of status.");
1885 manager_set_show_status(m, SHOW_STATUS_NO);
1889 log_set_max_level(LOG_DEBUG);
1890 log_notice("Setting log level to debug.");
1894 log_set_max_level(LOG_INFO);
1895 log_notice("Setting log level to info.");
1899 if (m->running_as == SYSTEMD_USER) {
1900 m->exit_code = MANAGER_EXIT;
1904 /* This is a nop on init */
1908 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1909 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1910 log_notice("Setting log target to journal-or-kmsg.");
1914 log_set_target(LOG_TARGET_CONSOLE);
1915 log_notice("Setting log target to console.");
1919 log_set_target(LOG_TARGET_KMSG);
1920 log_notice("Setting log target to kmsg.");
1924 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1931 manager_dispatch_sigchld(m);
1936 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1937 Manager *m = userdata;
1942 assert(m->time_change_fd == fd);
1944 log_struct(LOG_INFO,
1945 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1946 LOG_MESSAGE("Time has been changed"),
1949 /* Restart the watch */
1950 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
1951 m->time_change_fd = safe_close(m->time_change_fd);
1953 manager_setup_time_change(m);
1955 HASHMAP_FOREACH(u, m->units, i)
1956 if (UNIT_VTABLE(u)->time_change)
1957 UNIT_VTABLE(u)->time_change(u);
1962 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1963 Manager *m = userdata;
1966 assert(m->idle_pipe[2] == fd);
1968 m->no_console_output = m->n_on_console > 0;
1970 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
1971 manager_close_idle_pipe(m);
1976 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1977 Manager *m = userdata;
1984 manager_print_jobs_in_progress(m);
1986 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1987 r = sd_event_source_set_time(source, next);
1991 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
1994 int manager_loop(Manager *m) {
1997 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
2000 m->exit_code = MANAGER_OK;
2002 /* Release the path cache */
2003 set_free_free(m->unit_path_cache);
2004 m->unit_path_cache = NULL;
2006 manager_check_finished(m);
2008 /* There might still be some zombies hanging around from
2009 * before we were exec()'ed. Let's reap them. */
2010 r = manager_dispatch_sigchld(m);
2014 while (m->exit_code == MANAGER_OK) {
2017 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
2020 if (!ratelimit_test(&rl)) {
2021 /* Yay, something is going seriously wrong, pause a little */
2022 log_warning("Looping too fast. Throttling execution a little.");
2027 if (manager_dispatch_load_queue(m) > 0)
2030 if (manager_dispatch_gc_queue(m) > 0)
2033 if (manager_dispatch_cleanup_queue(m) > 0)
2036 if (manager_dispatch_cgroup_queue(m) > 0)
2039 if (manager_dispatch_dbus_queue(m) > 0)
2042 /* Sleep for half the watchdog time */
2043 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
2044 wait_usec = m->runtime_watchdog / 2;
2048 wait_usec = USEC_INFINITY;
2050 r = sd_event_run(m->event, wait_usec);
2052 return log_error_errno(r, "Failed to run event loop: %m");
2055 return m->exit_code;
2058 int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
2059 _cleanup_free_ char *n = NULL;
2067 r = unit_name_from_dbus_path(s, &n);
2071 r = manager_load_unit(m, n, NULL, e, &u);
2080 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
2090 p = startswith(s, "/org/freedesktop/systemd1/job/");
2094 r = safe_atou(p, &id);
2098 j = manager_get_job(m, id);
2107 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2110 _cleanup_free_ char *p = NULL;
2114 audit_fd = get_audit_fd();
2118 /* Don't generate audit 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 (u->type != UNIT_SERVICE)
2129 p = unit_name_to_prefix_and_instance(u->id);
2135 msg = strjoina("unit=", p);
2136 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2138 /* We aren't allowed to send audit messages?
2139 * Then let's not retry again. */
2142 log_warning_errno(errno, "Failed to send audit message: %m");
2148 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2149 union sockaddr_union sa = PLYMOUTH_SOCKET;
2152 _cleanup_free_ char *message = NULL;
2153 _cleanup_close_ int fd = -1;
2155 /* Don't generate plymouth events if the service was already
2156 * started and we're just deserializing */
2157 if (m->n_reloading > 0)
2160 if (m->running_as != SYSTEMD_SYSTEM)
2163 if (detect_container(NULL) > 0)
2166 if (u->type != UNIT_SERVICE &&
2167 u->type != UNIT_MOUNT &&
2168 u->type != UNIT_SWAP)
2171 /* We set SOCK_NONBLOCK here so that we rather drop the
2172 * message then wait for plymouth */
2173 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2175 log_error_errno(errno, "socket() failed: %m");
2179 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2181 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2182 log_error_errno(errno, "connect() failed: %m");
2186 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2192 if (write(fd, message, n + 1) != n + 1)
2193 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2194 log_error_errno(errno, "Failed to write Plymouth message: %m");
2197 void manager_dispatch_bus_name_owner_changed(
2200 const char* old_owner,
2201 const char *new_owner) {
2208 u = hashmap_get(m->watch_bus, name);
2212 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2215 int manager_open_serialization(Manager *m, FILE **_f) {
2222 path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
2223 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
2227 log_debug("Serializing state to %s", path);
2229 f = fdopen(fd, "w+");
2240 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2253 fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
2254 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2255 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2256 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2258 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2259 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2260 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2261 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2264 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2265 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2266 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2267 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2268 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2269 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2270 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2271 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2274 if (!switching_root) {
2275 STRV_FOREACH(e, m->environment) {
2276 _cleanup_free_ char *ce;
2282 fprintf(f, "env=%s\n", *e);
2286 if (m->notify_fd >= 0) {
2289 copy = fdset_put_dup(fds, m->notify_fd);
2293 fprintf(f, "notify-fd=%i\n", copy);
2294 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2297 if (m->kdbus_fd >= 0) {
2300 copy = fdset_put_dup(fds, m->kdbus_fd);
2304 fprintf(f, "kdbus-fd=%i\n", copy);
2307 bus_track_serialize(m->subscribed, f);
2311 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2319 r = unit_serialize(u, f, fds, !switching_root);
2326 assert(m->n_reloading > 0);
2332 r = bus_fdset_add_all(m, fds);
2339 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2345 log_debug("Deserializing state...");
2350 char line[LINE_MAX], *l;
2352 if (!fgets(line, sizeof(line), f)) {
2367 if (startswith(l, "current-job-id=")) {
2370 if (safe_atou32(l+15, &id) < 0)
2371 log_debug("Failed to parse current job id value %s", l+15);
2373 m->current_job_id = MAX(m->current_job_id, id);
2375 } else if (startswith(l, "n-installed-jobs=")) {
2378 if (safe_atou32(l+17, &n) < 0)
2379 log_debug("Failed to parse installed jobs counter %s", l+17);
2381 m->n_installed_jobs += n;
2383 } else if (startswith(l, "n-failed-jobs=")) {
2386 if (safe_atou32(l+14, &n) < 0)
2387 log_debug("Failed to parse failed jobs counter %s", l+14);
2389 m->n_failed_jobs += n;
2391 } else if (startswith(l, "taint-usr=")) {
2394 b = parse_boolean(l+10);
2396 log_debug("Failed to parse taint /usr flag %s", l+10);
2398 m->taint_usr = m->taint_usr || b;
2400 } else if (startswith(l, "firmware-timestamp="))
2401 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2402 else if (startswith(l, "loader-timestamp="))
2403 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2404 else if (startswith(l, "kernel-timestamp="))
2405 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2406 else if (startswith(l, "initrd-timestamp="))
2407 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2408 else if (startswith(l, "userspace-timestamp="))
2409 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2410 else if (startswith(l, "finish-timestamp="))
2411 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2412 else if (startswith(l, "security-start-timestamp="))
2413 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2414 else if (startswith(l, "security-finish-timestamp="))
2415 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2416 else if (startswith(l, "generators-start-timestamp="))
2417 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2418 else if (startswith(l, "generators-finish-timestamp="))
2419 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2420 else if (startswith(l, "units-load-start-timestamp="))
2421 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2422 else if (startswith(l, "units-load-finish-timestamp="))
2423 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2424 else if (startswith(l, "env=")) {
2425 _cleanup_free_ char *uce = NULL;
2428 uce = cunescape(l+4);
2434 e = strv_env_set(m->environment, uce);
2440 strv_free(m->environment);
2443 } else if (startswith(l, "notify-fd=")) {
2446 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2447 log_debug("Failed to parse notify fd: %s", l + 10);
2449 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2450 safe_close(m->notify_fd);
2451 m->notify_fd = fdset_remove(fds, fd);
2454 } else if (startswith(l, "notify-socket=")) {
2463 free(m->notify_socket);
2464 m->notify_socket = n;
2466 } else if (startswith(l, "kdbus-fd=")) {
2469 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2470 log_debug("Failed to parse kdbus fd: %s", l + 9);
2472 safe_close(m->kdbus_fd);
2473 m->kdbus_fd = fdset_remove(fds, fd);
2479 k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
2481 log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
2483 log_debug("Unknown serialization item '%s'", l);
2489 char name[UNIT_NAME_MAX+2];
2492 if (!fgets(name, sizeof(name), f)) {
2503 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2507 r = unit_deserialize(u, f, fds);
2516 assert(m->n_reloading > 0);
2522 int manager_reload(Manager *m) {
2524 _cleanup_fclose_ FILE *f = NULL;
2525 _cleanup_fdset_free_ FDSet *fds = NULL;
2529 r = manager_open_serialization(m, &f);
2534 bus_manager_send_reloading(m, true);
2542 r = manager_serialize(m, f, fds, false);
2548 if (fseeko(f, 0, SEEK_SET) < 0) {
2553 /* From here on there is no way back. */
2554 manager_clear_jobs_and_units(m);
2555 manager_undo_generators(m);
2556 lookup_paths_free(&m->lookup_paths);
2558 /* Find new unit paths */
2559 q = manager_run_generators(m);
2560 if (q < 0 && r >= 0)
2563 q = lookup_paths_init(
2564 &m->lookup_paths, m->running_as, true,
2566 m->generator_unit_path,
2567 m->generator_unit_path_early,
2568 m->generator_unit_path_late);
2569 if (q < 0 && r >= 0)
2572 manager_build_unit_path_cache(m);
2574 /* First, enumerate what we can from all config files */
2575 q = manager_enumerate(m);
2576 if (q < 0 && r >= 0)
2579 /* Second, deserialize our stored data */
2580 q = manager_deserialize(m, f, fds);
2581 if (q < 0 && r >= 0)
2587 /* Re-register notify_fd as event source */
2588 q = manager_setup_notify(m);
2589 if (q < 0 && r >= 0)
2592 /* Third, fire things up! */
2593 q = manager_coldplug(m);
2594 if (q < 0 && r >= 0)
2597 assert(m->n_reloading > 0);
2600 m->send_reloading_done = true;
2605 bool manager_is_reloading_or_reexecuting(Manager *m) {
2608 return m->n_reloading != 0;
2611 void manager_reset_failed(Manager *m) {
2617 HASHMAP_FOREACH(u, m->units, i)
2618 unit_reset_failed(u);
2621 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2627 /* Returns true if the unit is inactive or going down */
2628 u = manager_get_unit(m, name);
2632 return unit_inactive_or_pending(u);
2635 static void manager_notify_finished(Manager *m) {
2636 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2637 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2642 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2644 /* Note that m->kernel_usec.monotonic is always at 0,
2645 * and m->firmware_usec.monotonic and
2646 * m->loader_usec.monotonic should be considered
2647 * negative values. */
2649 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2650 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2651 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2652 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2654 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2656 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2657 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2659 log_struct(LOG_INFO,
2660 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2661 "KERNEL_USEC="USEC_FMT, kernel_usec,
2662 "INITRD_USEC="USEC_FMT, initrd_usec,
2663 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2664 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2665 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2666 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2667 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2668 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
2671 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2674 log_struct(LOG_INFO,
2675 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2676 "KERNEL_USEC="USEC_FMT, kernel_usec,
2677 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2678 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2679 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2680 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2681 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
2685 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2686 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2688 log_struct(LOG_INFO,
2689 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2690 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2691 LOG_MESSAGE("Startup finished in %s.",
2692 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
2696 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2700 "STATUS=Startup finished in %s.",
2701 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2704 void manager_check_finished(Manager *m) {
2710 if (hashmap_size(m->jobs) > 0) {
2712 if (m->jobs_in_progress_event_source)
2713 /* Ignore any failure, this is only for feedback */
2714 (void) sd_event_source_set_time(m->jobs_in_progress_event_source,
2715 now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
2720 manager_flip_auto_status(m, false);
2722 /* Notify Type=idle units that we are done now */
2723 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2724 manager_close_idle_pipe(m);
2726 /* Turn off confirm spawn now */
2727 m->confirm_spawn = false;
2729 /* No need to update ask password status when we're going non-interactive */
2730 manager_close_ask_password(m);
2732 /* This is no longer the first boot */
2733 manager_set_first_boot(m, false);
2735 if (dual_timestamp_is_set(&m->finish_timestamp))
2738 dual_timestamp_get(&m->finish_timestamp);
2740 manager_notify_finished(m);
2742 SET_FOREACH(u, m->startup_units, i)
2744 cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
2747 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2758 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2759 /* systemd --system, not running --test */
2761 p = strappend("/run/systemd/", name);
2765 r = mkdir_p_label(p, 0755);
2767 log_error_errno(r, "Failed to create generator directory %s: %m", p);
2771 } else if (m->running_as == SYSTEMD_USER) {
2772 const char *s = NULL;
2774 s = getenv("XDG_RUNTIME_DIR");
2777 p = strjoin(s, "/systemd/", name, NULL);
2781 r = mkdir_p_label(p, 0755);
2783 log_error_errno(r, "Failed to create generator directory %s: %m", p);
2788 /* systemd --system --test */
2790 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2795 log_error_errno(errno, "Failed to create generator directory %s: %m",
2806 static void trim_generator_dir(Manager *m, char **generator) {
2813 if (rmdir(*generator) >= 0) {
2821 static int manager_run_generators(Manager *m) {
2822 _cleanup_free_ char **paths = NULL;
2823 const char *argv[5];
2832 paths = generator_paths(m->running_as);
2836 /* Optimize by skipping the whole process by not creating output directories
2837 * if no generators are found. */
2838 STRV_FOREACH(path, paths) {
2839 r = access(*path, F_OK);
2842 if (errno != ENOENT)
2843 log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
2848 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2852 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2856 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2860 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2861 argv[1] = m->generator_unit_path;
2862 argv[2] = m->generator_unit_path_early;
2863 argv[3] = m->generator_unit_path_late;
2866 RUN_WITH_UMASK(0022)
2867 execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
2870 trim_generator_dir(m, &m->generator_unit_path);
2871 trim_generator_dir(m, &m->generator_unit_path_early);
2872 trim_generator_dir(m, &m->generator_unit_path_late);
2876 static void remove_generator_dir(Manager *m, char **generator) {
2883 strv_remove(m->lookup_paths.unit_path, *generator);
2884 rm_rf(*generator, false, true, false);
2890 static void manager_undo_generators(Manager *m) {
2893 remove_generator_dir(m, &m->generator_unit_path);
2894 remove_generator_dir(m, &m->generator_unit_path_early);
2895 remove_generator_dir(m, &m->generator_unit_path_late);
2898 int manager_environment_add(Manager *m, char **minus, char **plus) {
2899 char **a = NULL, **b = NULL, **l;
2904 if (!strv_isempty(minus)) {
2905 a = strv_env_delete(l, 1, minus);
2912 if (!strv_isempty(plus)) {
2913 b = strv_env_merge(2, l, plus);
2922 if (m->environment != l)
2923 strv_free(m->environment);
2930 manager_clean_environment(m);
2931 strv_sort(m->environment);
2936 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2941 for (i = 0; i < _RLIMIT_MAX; i++) {
2942 if (!default_rlimit[i])
2945 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2953 void manager_recheck_journal(Manager *m) {
2958 if (m->running_as != SYSTEMD_SYSTEM)
2961 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2962 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2963 log_close_journal();
2967 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2968 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2969 log_close_journal();
2973 /* Hmm, OK, so the socket is fully up and the service is up
2974 * too, then let's make use of the thing. */
2978 void manager_set_show_status(Manager *m, ShowStatus mode) {
2980 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
2982 if (m->running_as != SYSTEMD_SYSTEM)
2985 m->show_status = mode;
2988 touch("/run/systemd/show-status");
2990 unlink("/run/systemd/show-status");
2993 static bool manager_get_show_status(Manager *m, StatusType type) {
2996 if (m->running_as != SYSTEMD_SYSTEM)
2999 if (m->no_console_output)
3002 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
3005 /* If we cannot find out the status properly, just proceed. */
3006 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
3009 if (m->show_status > 0)
3015 void manager_set_first_boot(Manager *m, bool b) {
3018 if (m->running_as != SYSTEMD_SYSTEM)
3024 touch("/run/systemd/first-boot");
3026 unlink("/run/systemd/first-boot");
3029 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
3032 /* If m is NULL, assume we're after shutdown and let the messages through. */
3034 if (m && !manager_get_show_status(m, type))
3037 /* XXX We should totally drop the check for ephemeral here
3038 * and thus effectively make 'Type=idle' pointless. */
3039 if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
3042 va_start(ap, format);
3043 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
3047 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
3048 _cleanup_free_ char *p = NULL;
3056 p = unit_name_from_path(path, suffix);
3060 found = manager_get_unit(m, p);
3070 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3071 char p[strlen(path)+1];
3077 path_kill_slashes(p);
3079 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3082 const char *manager_get_runtime_prefix(Manager *m) {
3085 return m->running_as == SYSTEMD_SYSTEM ?
3087 getenv("XDG_RUNTIME_DIR");
3090 void manager_update_failed_units(Manager *m, Unit *u, bool failed) {
3094 assert(u->manager == m);
3096 size = set_size(m->failed_units);
3099 if (set_put(m->failed_units, u) < 0)
3102 set_remove(m->failed_units, u);
3104 if (set_size(m->failed_units) != size)
3105 bus_manager_send_change_signal(m);
3108 ManagerState manager_state(Manager *m) {
3113 /* Did we ever finish booting? If not then we are still starting up */
3114 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3116 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3117 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3118 return MANAGER_INITIALIZING;
3120 return MANAGER_STARTING;
3123 /* Is the special shutdown target queued? If so, we are in shutdown state */
3124 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
3125 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
3126 return MANAGER_STOPPING;
3128 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3129 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3130 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3131 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3132 return MANAGER_MAINTENANCE;
3134 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3135 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3136 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3137 return MANAGER_MAINTENANCE;
3139 /* Are there any failed units? If so, we are in degraded mode */
3140 if (set_size(m->failed_units) > 0)
3141 return MANAGER_DEGRADED;
3143 return MANAGER_RUNNING;
3146 static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
3147 [MANAGER_INITIALIZING] = "initializing",
3148 [MANAGER_STARTING] = "starting",
3149 [MANAGER_RUNNING] = "running",
3150 [MANAGER_DEGRADED] = "degraded",
3151 [MANAGER_MAINTENANCE] = "maintenance",
3152 [MANAGER_STOPPING] = "stopping",
3155 DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);