1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include <sys/reboot.h>
30 #include <sys/ioctl.h>
34 #include <sys/types.h>
37 #include <sys/timerfd.h>
43 #include "sd-daemon.h"
45 #include "sd-messages.h"
48 #include "transaction.h"
55 #include "ratelimit.h"
56 #include "locale-setup.h"
57 #include "mount-setup.h"
58 #include "unit-name.h"
60 #include "path-lookup.h"
62 #include "exit-status.h"
65 #include "cgroup-util.h"
66 #include "path-util.h"
68 #include "boot-timestamps.h"
70 #include "bus-errors.h"
71 #include "bus-error.h"
74 #include "dbus-unit.h"
76 #include "dbus-manager.h"
77 #include "bus-kernel.h"
79 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
80 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
82 /* Initial delay and the interval for printing status messages about running jobs */
83 #define JOBS_IN_PROGRESS_WAIT_SEC 5
84 #define JOBS_IN_PROGRESS_PERIOD_SEC 1
85 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
87 /* Where clients shall send notification messages to */
88 #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify"
90 #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
92 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
93 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
94 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
95 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
96 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
97 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
99 static int manager_setup_notify(Manager *m) {
102 struct sockaddr_un un;
104 .sa.sa_family = AF_UNIX,
108 m->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
109 if (m->notify_fd < 0) {
110 log_error("Failed to allocate notification socket: %m");
114 if (getpid() != 1 || detect_container(NULL) > 0)
115 snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull());
117 strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path));
118 sa.un.sun_path[0] = 0;
120 r = bind(m->notify_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1));
122 log_error("bind() failed: %m");
126 r = setsockopt(m->notify_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
128 log_error("SO_PASSCRED failed: %m");
132 r = sd_event_add_io(m->event, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m, &m->notify_event_source);
134 log_error("Failed to allocate notify event source: %s", strerror(-r));
138 sa.un.sun_path[0] = '@';
139 m->notify_socket = strdup(sa.un.sun_path);
140 if (!m->notify_socket)
143 log_debug("Using notification socket %s", m->notify_socket);
148 static int manager_watch_jobs_in_progress(Manager *m) {
151 if (m->jobs_in_progress_event_source)
154 return sd_event_add_monotonic(m->event, JOBS_IN_PROGRESS_WAIT_SEC, 0, manager_dispatch_jobs_in_progress, m, &m->jobs_in_progress_event_source);
157 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
159 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
162 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
163 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
167 p = mempset(p, ' ', pos-2);
168 p = stpcpy(p, ANSI_RED_ON);
172 if (pos > 0 && pos <= width) {
173 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
177 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
180 p = stpcpy(p, ANSI_RED_ON);
183 p = mempset(p, ' ', width-1-pos);
184 strcpy(p, ANSI_HIGHLIGHT_OFF);
188 static void manager_print_jobs_in_progress(Manager *m) {
189 _cleanup_free_ char *job_of_n = NULL;
192 unsigned counter = 0, print_nr;
193 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
198 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
200 HASHMAP_FOREACH(j, m->jobs, i)
201 if (j->state == JOB_RUNNING && counter++ == print_nr)
204 /* m->n_running_jobs must be consistent with the contents of m->jobs,
205 * so the above loop must have succeeded in finding j. */
206 assert(counter == print_nr + 1);
209 cylon_pos = m->jobs_in_progress_iteration % 14;
211 cylon_pos = 14 - cylon_pos;
212 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
214 if (m->n_running_jobs > 1)
215 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
218 manager_status_printf(m, true, cylon, "%sA %s job is running for %s",
219 strempty(job_of_n), job_type_to_string(j->type), unit_description(j->unit));
221 m->jobs_in_progress_iteration++;
224 static int manager_watch_idle_pipe(Manager *m) {
229 if (m->idle_pipe_event_source)
232 if (m->idle_pipe[2] < 0)
235 r = sd_event_add_io(m->event, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m, &m->idle_pipe_event_source);
237 log_error("Failed to watch idle pipe: %s", strerror(-r));
244 static void manager_close_idle_pipe(Manager *m) {
247 close_pipe(m->idle_pipe);
248 close_pipe(m->idle_pipe + 2);
251 static int manager_setup_time_change(Manager *m) {
254 /* We only care for the cancellation event, hence we set the
255 * timeout to the latest possible value. */
256 struct itimerspec its = {
257 .it_value.tv_sec = TIME_T_MAX,
261 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
263 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
264 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
266 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
267 if (m->time_change_fd < 0) {
268 log_error("Failed to create timerfd: %m");
272 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
273 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
274 close_nointr_nofail(m->time_change_fd);
275 m->time_change_fd = -1;
279 r = sd_event_add_io(m->event, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m, &m->time_change_event_source);
281 log_error("Failed to create time change event source: %s", strerror(-r));
285 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
290 static int enable_special_signals(Manager *m) {
291 _cleanup_close_ int fd = -1;
295 /* Enable that we get SIGINT on control-alt-del. In containers
296 * this will fail with EPERM (older) or EINVAL (newer), so
298 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
299 log_warning("Failed to enable ctrl-alt-del handling: %m");
301 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
303 /* Support systems without virtual console */
305 log_warning("Failed to open /dev/tty0: %m");
307 /* Enable that we get SIGWINCH on kbrequest */
308 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
309 log_warning("Failed to enable kbrequest handling: %m");
315 static int manager_setup_signals(Manager *m) {
316 struct sigaction sa = {
317 .sa_handler = SIG_DFL,
318 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
325 /* We are not interested in SIGSTOP and friends. */
326 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
328 assert_se(sigemptyset(&mask) == 0);
330 sigset_add_many(&mask,
331 SIGCHLD, /* Child died */
332 SIGTERM, /* Reexecute daemon */
333 SIGHUP, /* Reload configuration */
334 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
335 SIGUSR2, /* systemd: dump status */
336 SIGINT, /* Kernel sends us this on control-alt-del */
337 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
338 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
339 SIGRTMIN+0, /* systemd: start default.target */
340 SIGRTMIN+1, /* systemd: isolate rescue.target */
341 SIGRTMIN+2, /* systemd: isolate emergency.target */
342 SIGRTMIN+3, /* systemd: start halt.target */
343 SIGRTMIN+4, /* systemd: start poweroff.target */
344 SIGRTMIN+5, /* systemd: start reboot.target */
345 SIGRTMIN+6, /* systemd: start kexec.target */
346 SIGRTMIN+13, /* systemd: Immediate halt */
347 SIGRTMIN+14, /* systemd: Immediate poweroff */
348 SIGRTMIN+15, /* systemd: Immediate reboot */
349 SIGRTMIN+16, /* systemd: Immediate kexec */
350 SIGRTMIN+20, /* systemd: enable status messages */
351 SIGRTMIN+21, /* systemd: disable status messages */
352 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
353 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
354 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
355 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
356 SIGRTMIN+27, /* systemd: set log target to console */
357 SIGRTMIN+28, /* systemd: set log target to kmsg */
358 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */
360 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
362 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
363 if (m->signal_fd < 0)
366 r = sd_event_add_io(m->event, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m, &m->signal_event_source);
370 /* Process signals a bit earlier than the rest of things */
371 r = sd_event_source_set_priority(m->signal_event_source, -5);
375 if (m->running_as == SYSTEMD_SYSTEM)
376 return enable_special_signals(m);
381 static int manager_default_environment(Manager *m) {
384 if (m->running_as == SYSTEMD_SYSTEM) {
385 /* The system manager always starts with a clean
386 * environment for its children. It does not import
387 * the kernel or the parents exported variables.
389 * The initial passed environ is untouched to keep
390 * /proc/self/environ valid; it is used for tagging
391 * the init process inside containers. */
392 m->environment = strv_new("PATH=" DEFAULT_PATH,
395 /* Import locale variables LC_*= from configuration */
396 locale_setup(&m->environment);
398 /* The user manager passes its own environment
399 * along to its children. */
400 m->environment = strv_copy(environ);
405 strv_sort(m->environment);
410 static int manager_setup_kdbus(Manager *m) {
411 _cleanup_free_ char *p = NULL;
416 if (m->kdbus_fd >= 0)
419 /* If there's already a bus address set, don't set up kdbus */
420 if (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"))
423 m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", &p);
424 if (m->kdbus_fd < 0) {
425 log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd));
429 log_debug("Successfully set up kdbus on %s", p);
431 /* Create the namespace directory here, so that the contents
432 * of that directory is not visible to non-root users. This is
433 * necessary to ensure that users cannot get access to busses
434 * of virtualized users when no UID namespacing is used. */
435 mkdir_p_label("/dev/kdbus/ns", 0700);
441 static int manager_connect_bus(Manager *m, bool reexecuting) {
442 bool try_bus_connect;
449 (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
451 /* Try to connect to the busses, if possible. */
452 return bus_init(m, try_bus_connect);
455 int manager_new(SystemdRunningAs running_as, Manager **_m) {
460 assert(running_as >= 0);
461 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
463 m = new0(Manager, 1);
468 if (detect_container(NULL) <= 0)
469 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
472 m->running_as = running_as;
473 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
475 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
477 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;
478 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
480 r = manager_default_environment(m);
484 r = hashmap_ensure_allocated(&m->units, string_hash_func, string_compare_func);
488 r = hashmap_ensure_allocated(&m->jobs, trivial_hash_func, trivial_compare_func);
492 r = hashmap_ensure_allocated(&m->cgroup_unit, string_hash_func, string_compare_func);
496 r = hashmap_ensure_allocated(&m->watch_pids, trivial_hash_func, trivial_compare_func);
500 r = hashmap_ensure_allocated(&m->watch_bus, string_hash_func, string_compare_func);
504 r = sd_event_default(&m->event);
508 r = sd_event_add_defer(m->event, manager_dispatch_run_queue, m, &m->run_queue_event_source);
512 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
516 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
520 r = manager_setup_signals(m);
524 r = manager_setup_cgroup(m);
528 r = manager_setup_notify(m);
532 r = manager_setup_time_change(m);
536 m->udev = udev_new();
542 m->taint_usr = dir_is_empty("/usr") > 0;
552 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
558 while ((u = m->cleanup_queue)) {
559 assert(u->in_cleanup_queue);
569 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
570 GC_OFFSET_UNSURE, /* No clue */
571 GC_OFFSET_GOOD, /* We still need this unit */
572 GC_OFFSET_BAD, /* We don't need this unit anymore */
576 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
583 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
584 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
585 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
588 if (u->in_cleanup_queue)
591 if (unit_check_gc(u))
594 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
598 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
599 unit_gc_sweep(other, gc_marker);
601 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
604 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
611 /* We were unable to find anything out about this entry, so
612 * let's investigate it later */
613 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
614 unit_add_to_gc_queue(u);
618 /* We definitely know that this one is not useful anymore, so
619 * let's mark it for deletion */
620 u->gc_marker = gc_marker + GC_OFFSET_BAD;
621 unit_add_to_cleanup_queue(u);
625 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
628 static unsigned manager_dispatch_gc_queue(Manager *m) {
635 /* log_debug("Running GC..."); */
637 m->gc_marker += _GC_OFFSET_MAX;
638 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
641 gc_marker = m->gc_marker;
643 while ((u = m->gc_queue)) {
644 assert(u->in_gc_queue);
646 unit_gc_sweep(u, gc_marker);
648 LIST_REMOVE(gc_queue, m->gc_queue, u);
649 u->in_gc_queue = false;
653 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
654 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
655 log_debug_unit(u->id, "Collecting %s", u->id);
656 u->gc_marker = gc_marker + GC_OFFSET_BAD;
657 unit_add_to_cleanup_queue(u);
661 m->n_in_gc_queue = 0;
666 static void manager_clear_jobs_and_units(Manager *m) {
671 while ((u = hashmap_first(m->units)))
674 manager_dispatch_cleanup_queue(m);
676 assert(!m->load_queue);
677 assert(!m->run_queue);
678 assert(!m->dbus_unit_queue);
679 assert(!m->dbus_job_queue);
680 assert(!m->cleanup_queue);
681 assert(!m->gc_queue);
683 assert(hashmap_isempty(m->jobs));
684 assert(hashmap_isempty(m->units));
687 m->n_running_jobs = 0;
690 void manager_free(Manager *m) {
696 manager_clear_jobs_and_units(m);
698 for (c = 0; c < _UNIT_TYPE_MAX; c++)
699 if (unit_vtable[c]->shutdown)
700 unit_vtable[c]->shutdown(m);
702 /* If we reexecute ourselves, we keep the root cgroup
704 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
706 manager_undo_generators(m);
710 hashmap_free(m->units);
711 hashmap_free(m->jobs);
712 hashmap_free(m->watch_pids);
713 hashmap_free(m->watch_bus);
715 sd_event_source_unref(m->signal_event_source);
716 sd_event_source_unref(m->notify_event_source);
717 sd_event_source_unref(m->time_change_event_source);
718 sd_event_source_unref(m->jobs_in_progress_event_source);
719 sd_event_source_unref(m->idle_pipe_event_source);
720 sd_event_source_unref(m->run_queue_event_source);
722 if (m->signal_fd >= 0)
723 close_nointr_nofail(m->signal_fd);
724 if (m->notify_fd >= 0)
725 close_nointr_nofail(m->notify_fd);
726 if (m->time_change_fd >= 0)
727 close_nointr_nofail(m->time_change_fd);
728 if (m->kdbus_fd >= 0)
729 close_nointr_nofail(m->kdbus_fd);
731 manager_close_idle_pipe(m);
734 sd_event_unref(m->event);
736 free(m->notify_socket);
738 lookup_paths_free(&m->lookup_paths);
739 strv_free(m->environment);
741 hashmap_free(m->cgroup_unit);
742 set_free_free(m->unit_path_cache);
744 free(m->switch_root);
745 free(m->switch_root_init);
747 for (i = 0; i < RLIMIT_NLIMITS; i++)
750 assert(hashmap_isempty(m->units_requiring_mounts_for));
751 hashmap_free(m->units_requiring_mounts_for);
756 int manager_enumerate(Manager *m) {
762 /* Let's ask every type to load all units from disk/kernel
763 * that it might know */
764 for (c = 0; c < _UNIT_TYPE_MAX; c++)
765 if (unit_vtable[c]->enumerate) {
766 q = unit_vtable[c]->enumerate(m);
771 manager_dispatch_load_queue(m);
775 static int manager_coldplug(Manager *m) {
783 /* Then, let's set up their initial state. */
784 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
790 if ((q = unit_coldplug(u)) < 0)
797 static void manager_build_unit_path_cache(Manager *m) {
799 _cleanup_free_ DIR *d = NULL;
804 set_free_free(m->unit_path_cache);
806 m->unit_path_cache = set_new(string_hash_func, string_compare_func);
807 if (!m->unit_path_cache) {
808 log_error("Failed to allocate unit path cache.");
812 /* This simply builds a list of files we know exist, so that
813 * we don't always have to go to disk */
815 STRV_FOREACH(i, m->lookup_paths.unit_path) {
821 log_error("Failed to open directory %s: %m", *i);
825 while ((de = readdir(d))) {
828 if (ignore_file(de->d_name))
831 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
837 r = set_consume(m->unit_path_cache, p);
849 log_error("Failed to build unit path cache: %s", strerror(-r));
851 set_free_free(m->unit_path_cache);
852 m->unit_path_cache = NULL;
856 static int manager_distribute_fds(Manager *m, FDSet *fds) {
863 HASHMAP_FOREACH(u, m->units, i) {
865 if (fdset_size(fds) <= 0)
868 if (UNIT_VTABLE(u)->distribute_fds) {
869 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
878 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
883 dual_timestamp_get(&m->generators_start_timestamp);
884 manager_run_generators(m);
885 dual_timestamp_get(&m->generators_finish_timestamp);
887 r = lookup_paths_init(
888 &m->lookup_paths, m->running_as, true,
889 m->generator_unit_path,
890 m->generator_unit_path_early,
891 m->generator_unit_path_late);
895 manager_build_unit_path_cache(m);
897 /* If we will deserialize make sure that during enumeration
898 * this is already known, so we increase the counter here
903 /* First, enumerate what we can from all config files */
904 dual_timestamp_get(&m->units_load_start_timestamp);
905 r = manager_enumerate(m);
906 dual_timestamp_get(&m->units_load_finish_timestamp);
908 /* Second, deserialize if there is something to deserialize */
910 q = manager_deserialize(m, serialization, fds);
915 /* Any fds left? Find some unit which wants them. This is
916 * useful to allow container managers to pass some file
917 * descriptors to us pre-initialized. This enables
918 * socket-based activation of entire containers. */
919 if (fdset_size(fds) > 0) {
920 q = manager_distribute_fds(m, fds);
925 /* We might have deserialized the kdbus control fd, but if we
926 * didn't, then let's create the bus now. */
927 manager_setup_kdbus(m);
928 manager_connect_bus(m, !!serialization);
930 /* Third, fire things up! */
931 q = manager_coldplug(m);
936 assert(m->n_reloading > 0);
939 /* Let's wait for the UnitNew/JobNew messages being
940 * sent, before we notify that the reload is
942 m->send_reloading_done = true;
948 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
953 assert(type < _JOB_TYPE_MAX);
955 assert(mode < _JOB_MODE_MAX);
957 if (mode == JOB_ISOLATE && type != JOB_START) {
958 sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
962 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
963 sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
967 log_debug_unit(unit->id,
968 "Trying to enqueue job %s/%s/%s", unit->id,
969 job_type_to_string(type), job_mode_to_string(mode));
971 job_type_collapse(&type, unit);
973 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
977 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
978 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
979 mode == JOB_IGNORE_DEPENDENCIES, e);
983 if (mode == JOB_ISOLATE) {
984 r = transaction_add_isolate_jobs(tr, m);
989 r = transaction_activate(tr, m, mode, e);
993 log_debug_unit(unit->id,
994 "Enqueued job %s/%s as %u", unit->id,
995 job_type_to_string(type), (unsigned) tr->anchor_job->id);
998 *_ret = tr->anchor_job;
1000 transaction_free(tr);
1004 transaction_abort(tr);
1005 transaction_free(tr);
1009 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1014 assert(type < _JOB_TYPE_MAX);
1016 assert(mode < _JOB_MODE_MAX);
1018 r = manager_load_unit(m, name, NULL, NULL, &unit);
1022 return manager_add_job(m, type, unit, mode, override, e, _ret);
1025 Job *manager_get_job(Manager *m, uint32_t id) {
1028 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1031 Unit *manager_get_unit(Manager *m, const char *name) {
1035 return hashmap_get(m->units, name);
1038 unsigned manager_dispatch_load_queue(Manager *m) {
1044 /* Make sure we are not run recursively */
1045 if (m->dispatching_load_queue)
1048 m->dispatching_load_queue = true;
1050 /* Dispatches the load queue. Takes a unit from the queue and
1051 * tries to load its data until the queue is empty */
1053 while ((u = m->load_queue)) {
1054 assert(u->in_load_queue);
1060 m->dispatching_load_queue = false;
1064 int manager_load_unit_prepare(
1076 assert(name || path);
1078 /* This will prepare the unit for loading, but not actually
1079 * load anything from disk. */
1081 if (path && !is_path(path))
1082 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
1085 name = basename(path);
1087 t = unit_name_to_type(name);
1089 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false))
1090 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
1092 ret = manager_get_unit(m, name);
1098 ret = unit_new(m, unit_vtable[t]->object_size);
1103 ret->fragment_path = strdup(path);
1104 if (!ret->fragment_path) {
1110 r = unit_add_name(ret, name);
1116 unit_add_to_load_queue(ret);
1117 unit_add_to_dbus_queue(ret);
1118 unit_add_to_gc_queue(ret);
1126 int manager_load_unit(
1137 /* This will load the service information files, but not actually
1138 * start any services or anything. */
1140 r = manager_load_unit_prepare(m, name, path, e, _ret);
1144 manager_dispatch_load_queue(m);
1147 *_ret = unit_follow_merge(*_ret);
1152 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1159 HASHMAP_FOREACH(j, s->jobs, i)
1160 job_dump(j, f, prefix);
1163 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1171 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1173 unit_dump(u, f, prefix);
1176 void manager_clear_jobs(Manager *m) {
1181 while ((j = hashmap_first(m->jobs)))
1182 /* No need to recurse. We're cancelling all jobs. */
1183 job_finish_and_invalidate(j, JOB_CANCELED, false);
1186 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1187 Manager *m = userdata;
1193 while ((j = m->run_queue)) {
1194 assert(j->installed);
1195 assert(j->in_run_queue);
1197 job_run_and_invalidate(j);
1200 if (m->n_running_jobs > 0)
1201 manager_watch_jobs_in_progress(m);
1203 if (m->n_on_console > 0)
1204 manager_watch_idle_pipe(m);
1209 static unsigned manager_dispatch_dbus_queue(Manager *m) {
1216 if (m->dispatching_dbus_queue)
1219 m->dispatching_dbus_queue = true;
1221 while ((u = m->dbus_unit_queue)) {
1222 assert(u->in_dbus_queue);
1224 bus_unit_send_change_signal(u);
1228 while ((j = m->dbus_job_queue)) {
1229 assert(j->in_dbus_queue);
1231 bus_job_send_change_signal(j);
1235 m->dispatching_dbus_queue = false;
1237 if (m->send_reloading_done) {
1238 m->send_reloading_done = false;
1240 bus_manager_send_reloading(m, false);
1243 if (m->queued_message)
1244 bus_send_queued_message(m);
1249 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1250 Manager *m = userdata;
1254 assert(m->notify_fd == fd);
1256 if (revents != EPOLLIN) {
1257 log_warning("Got unexpected poll event for notify fd.");
1263 struct iovec iovec = {
1265 .iov_len = sizeof(buf)-1,
1269 struct cmsghdr cmsghdr;
1270 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1273 struct msghdr msghdr = {
1276 .msg_control = &control,
1277 .msg_controllen = sizeof(control),
1279 struct ucred *ucred;
1281 _cleanup_strv_free_ char **tags = NULL;
1283 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
1288 if (errno == EAGAIN || errno == EINTR)
1294 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1295 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1296 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1297 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1298 log_warning("Received notify message without credentials. Ignoring.");
1302 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1304 u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
1306 u = manager_get_unit_by_pid(m, ucred->pid);
1308 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
1313 assert((size_t) n < sizeof(buf));
1315 tags = strv_split(buf, "\n\r");
1319 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1321 if (UNIT_VTABLE(u)->notify_message)
1322 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
1328 static int manager_dispatch_sigchld(Manager *m) {
1336 /* First we call waitd() for a PID and do not reap the
1337 * zombie. That way we can still access /proc/$PID for
1338 * it while it is a zombie. */
1339 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1341 if (errno == ECHILD)
1353 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1354 _cleanup_free_ char *name = NULL;
1356 get_process_comm(si.si_pid, &name);
1357 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
1360 /* Let's flush any message the dying child might still
1361 * have queued for us. This ensures that the process
1362 * still exists in /proc so that we can figure out
1363 * which cgroup and hence unit it belongs to. */
1364 r = manager_dispatch_notify_fd(m->notify_event_source, m->notify_fd, EPOLLIN, m);
1368 /* And now figure out the unit this belongs to */
1369 u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
1371 u = manager_get_unit_by_pid(m, si.si_pid);
1373 /* And now, we actually reap the zombie. */
1374 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1381 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1384 log_debug("Child %lu died (code=%s, status=%i/%s)",
1385 (long unsigned) si.si_pid,
1386 sigchld_code_to_string(si.si_code),
1388 strna(si.si_code == CLD_EXITED
1389 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1390 : signal_to_string(si.si_status)));
1395 log_debug_unit(u->id,
1396 "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
1398 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
1399 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1405 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1406 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1409 log_debug_unit(name, "Activating special unit %s", name);
1411 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1413 log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
1418 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1419 Manager *m = userdata;
1421 struct signalfd_siginfo sfsi;
1422 bool sigchld = false;
1425 assert(m->signal_fd == fd);
1427 if (revents != EPOLLIN) {
1428 log_warning("Got unexpected events from signal file descriptor.");
1433 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
1434 if (n != sizeof(sfsi)) {
1439 if (errno == EINTR || errno == EAGAIN)
1445 if (sfsi.ssi_pid > 0) {
1448 get_process_comm(sfsi.ssi_pid, &p);
1450 log_debug("Received SIG%s from PID %lu (%s).",
1451 signal_to_string(sfsi.ssi_signo),
1452 (unsigned long) sfsi.ssi_pid, strna(p));
1455 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
1457 switch (sfsi.ssi_signo) {
1464 if (m->running_as == SYSTEMD_SYSTEM) {
1465 /* This is for compatibility with the
1466 * original sysvinit */
1467 m->exit_code = MANAGER_REEXECUTE;
1474 if (m->running_as == SYSTEMD_SYSTEM) {
1475 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1479 /* Run the exit target if there is one, if not, just exit. */
1480 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1481 m->exit_code = MANAGER_EXIT;
1488 if (m->running_as == SYSTEMD_SYSTEM)
1489 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1491 /* This is a nop on non-init */
1495 if (m->running_as == SYSTEMD_SYSTEM)
1496 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1498 /* This is a nop on non-init */
1504 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1506 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1507 log_info("Trying to reconnect to bus...");
1511 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1512 log_info("Loading D-Bus service...");
1513 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1520 _cleanup_free_ char *dump = NULL;
1521 _cleanup_fclose_ FILE *f = NULL;
1524 f = open_memstream(&dump, &size);
1526 log_warning("Failed to allocate memory stream.");
1530 manager_dump_units(m, f, "\t");
1531 manager_dump_jobs(m, f, "\t");
1534 log_warning("Failed to write status stream");
1538 log_dump(LOG_INFO, dump);
1543 m->exit_code = MANAGER_RELOAD;
1548 /* Starting SIGRTMIN+0 */
1549 static const char * const target_table[] = {
1550 [0] = SPECIAL_DEFAULT_TARGET,
1551 [1] = SPECIAL_RESCUE_TARGET,
1552 [2] = SPECIAL_EMERGENCY_TARGET,
1553 [3] = SPECIAL_HALT_TARGET,
1554 [4] = SPECIAL_POWEROFF_TARGET,
1555 [5] = SPECIAL_REBOOT_TARGET,
1556 [6] = SPECIAL_KEXEC_TARGET
1559 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1560 static const ManagerExitCode code_table[] = {
1562 [1] = MANAGER_POWEROFF,
1563 [2] = MANAGER_REBOOT,
1567 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1568 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1569 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1570 manager_start_target(m, target_table[idx],
1571 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1575 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1576 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1577 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1581 switch (sfsi.ssi_signo - SIGRTMIN) {
1584 log_debug("Enabling showing of status.");
1585 manager_set_show_status(m, true);
1589 log_debug("Disabling showing of status.");
1590 manager_set_show_status(m, false);
1594 log_set_max_level(LOG_DEBUG);
1595 log_notice("Setting log level to debug.");
1599 log_set_max_level(LOG_INFO);
1600 log_notice("Setting log level to info.");
1604 if (m->running_as == SYSTEMD_USER) {
1605 m->exit_code = MANAGER_EXIT;
1609 /* This is a nop on init */
1613 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1614 log_notice("Setting log target to journal-or-kmsg.");
1618 log_set_target(LOG_TARGET_CONSOLE);
1619 log_notice("Setting log target to console.");
1623 log_set_target(LOG_TARGET_KMSG);
1624 log_notice("Setting log target to kmsg.");
1628 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1629 log_notice("Setting log target to syslog-or-kmsg.");
1633 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1640 manager_dispatch_sigchld(m);
1645 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1646 Manager *m = userdata;
1651 assert(m->time_change_fd == fd);
1653 log_struct(LOG_INFO,
1654 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1655 "MESSAGE=Time has been changed",
1658 /* Restart the watch */
1659 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
1661 close_nointr_nofail(m->time_change_fd);
1662 m->time_change_fd = -1;
1664 manager_setup_time_change(m);
1666 HASHMAP_FOREACH(u, m->units, i)
1667 if (UNIT_VTABLE(u)->time_change)
1668 UNIT_VTABLE(u)->time_change(u);
1673 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1674 Manager *m = userdata;
1677 assert(m->idle_pipe[2] == fd);
1679 m->no_console_output = m->n_on_console > 0;
1681 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
1682 manager_close_idle_pipe(m);
1687 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1688 Manager *m = userdata;
1692 manager_print_jobs_in_progress(m);
1696 int manager_loop(Manager *m) {
1699 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1702 m->exit_code = MANAGER_RUNNING;
1704 /* Release the path cache */
1705 set_free_free(m->unit_path_cache);
1706 m->unit_path_cache = NULL;
1708 manager_check_finished(m);
1710 /* There might still be some zombies hanging around from
1711 * before we were exec()'ed. Let's reap them. */
1712 r = manager_dispatch_sigchld(m);
1716 while (m->exit_code == MANAGER_RUNNING) {
1719 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1722 if (!ratelimit_test(&rl)) {
1723 /* Yay, something is going seriously wrong, pause a little */
1724 log_warning("Looping too fast. Throttling execution a little.");
1729 if (manager_dispatch_load_queue(m) > 0)
1732 if (manager_dispatch_gc_queue(m) > 0)
1735 if (manager_dispatch_cleanup_queue(m) > 0)
1738 if (manager_dispatch_cgroup_queue(m) > 0)
1741 if (manager_dispatch_dbus_queue(m) > 0)
1744 /* Sleep for half the watchdog time */
1745 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1746 wait_usec = m->runtime_watchdog / 2;
1750 wait_usec = (usec_t) -1;
1752 r = sd_event_run(m->event, wait_usec);
1754 log_error("Failed to run event loop: %s", strerror(-r));
1759 return m->exit_code;
1762 int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
1763 _cleanup_free_ char *n = NULL;
1771 r = unit_name_from_dbus_path(s, &n);
1775 r = manager_load_unit(m, n, NULL, e, &u);
1784 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1794 p = startswith(s, "/org/freedesktop/systemd1/job/");
1798 r = safe_atou(p, &id);
1802 j = manager_get_job(m, id);
1811 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
1817 audit_fd = get_audit_fd();
1821 /* Don't generate audit events if the service was already
1822 * started and we're just deserializing */
1823 if (m->n_reloading > 0)
1826 if (m->running_as != SYSTEMD_SYSTEM)
1829 if (u->type != UNIT_SERVICE)
1832 p = unit_name_to_prefix_and_instance(u->id);
1834 log_error_unit(u->id,
1835 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
1839 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
1840 if (errno == EPERM) {
1841 /* We aren't allowed to send audit messages?
1842 * Then let's not retry again. */
1845 log_warning("Failed to send audit message: %m");
1853 void manager_send_unit_plymouth(Manager *m, Unit *u) {
1855 union sockaddr_union sa;
1857 char *message = NULL;
1859 /* Don't generate plymouth events if the service was already
1860 * started and we're just deserializing */
1861 if (m->n_reloading > 0)
1864 if (m->running_as != SYSTEMD_SYSTEM)
1867 if (detect_container(NULL) > 0)
1870 if (u->type != UNIT_SERVICE &&
1871 u->type != UNIT_MOUNT &&
1872 u->type != UNIT_SWAP)
1875 /* We set SOCK_NONBLOCK here so that we rather drop the
1876 * message then wait for plymouth */
1877 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
1879 log_error("socket() failed: %m");
1884 sa.sa.sa_family = AF_UNIX;
1885 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
1886 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
1888 if (errno != EPIPE &&
1891 errno != ECONNREFUSED &&
1892 errno != ECONNRESET &&
1893 errno != ECONNABORTED)
1894 log_error("connect() failed: %m");
1899 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
1905 if (write(fd, message, n + 1) != n + 1) {
1907 if (errno != EPIPE &&
1910 errno != ECONNREFUSED &&
1911 errno != ECONNRESET &&
1912 errno != ECONNABORTED)
1913 log_error("Failed to write Plymouth message: %m");
1920 close_nointr_nofail(fd);
1925 void manager_dispatch_bus_name_owner_changed(
1928 const char* old_owner,
1929 const char *new_owner) {
1936 u = hashmap_get(m->watch_bus, name);
1940 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
1943 int manager_open_serialization(Manager *m, FILE **_f) {
1950 if (m->running_as == SYSTEMD_SYSTEM)
1951 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
1953 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
1958 RUN_WITH_UMASK(0077) {
1959 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
1969 log_debug("Serializing state to %s", path);
1972 f = fdopen(fd, "w+");
1981 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
1994 fprintf(f, "current-job-id=%i\n", m->current_job_id);
1995 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
1996 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
1997 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
1999 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2000 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2001 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2002 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2005 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2006 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2007 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2008 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2009 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2010 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2011 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2012 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2015 if (!switching_root) {
2016 STRV_FOREACH(e, m->environment) {
2017 _cleanup_free_ char *ce;
2023 fprintf(f, "env=%s\n", *e);
2027 if (m->kdbus_fd >= 0) {
2030 copy = fdset_put_dup(fds, m->kdbus_fd);
2034 fprintf(f, "kdbus-fd=%i\n", copy);
2037 bus_serialize(m, f);
2041 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2045 if (!unit_can_serialize(u))
2052 r = unit_serialize(u, f, fds, !switching_root);
2059 assert(m->n_reloading > 0);
2065 r = bus_fdset_add_all(m, fds);
2072 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2078 log_debug("Deserializing state...");
2083 char line[LINE_MAX], *l;
2085 if (!fgets(line, sizeof(line), f)) {
2100 if (startswith(l, "current-job-id=")) {
2103 if (safe_atou32(l+15, &id) < 0)
2104 log_debug("Failed to parse current job id value %s", l+15);
2106 m->current_job_id = MAX(m->current_job_id, id);
2108 } else if (startswith(l, "n-installed-jobs=")) {
2111 if (safe_atou32(l+17, &n) < 0)
2112 log_debug("Failed to parse installed jobs counter %s", l+17);
2114 m->n_installed_jobs += n;
2116 } else if (startswith(l, "n-failed-jobs=")) {
2119 if (safe_atou32(l+14, &n) < 0)
2120 log_debug("Failed to parse failed jobs counter %s", l+14);
2122 m->n_failed_jobs += n;
2124 } else if (startswith(l, "taint-usr=")) {
2127 b = parse_boolean(l+10);
2129 log_debug("Failed to parse taint /usr flag %s", l+10);
2131 m->taint_usr = m->taint_usr || b;
2133 } else if (startswith(l, "firmware-timestamp="))
2134 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2135 else if (startswith(l, "loader-timestamp="))
2136 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2137 else if (startswith(l, "kernel-timestamp="))
2138 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2139 else if (startswith(l, "initrd-timestamp="))
2140 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2141 else if (startswith(l, "userspace-timestamp="))
2142 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2143 else if (startswith(l, "finish-timestamp="))
2144 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2145 else if (startswith(l, "security-start-timestamp="))
2146 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2147 else if (startswith(l, "security-finish-timestamp="))
2148 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2149 else if (startswith(l, "generators-start-timestamp="))
2150 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2151 else if (startswith(l, "generators-finish-timestamp="))
2152 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2153 else if (startswith(l, "units-load-start-timestamp="))
2154 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2155 else if (startswith(l, "units-load-finish-timestamp="))
2156 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2157 else if (startswith(l, "env=")) {
2158 _cleanup_free_ char *uce = NULL;
2161 uce = cunescape(l+4);
2167 e = strv_env_set(m->environment, uce);
2173 strv_free(m->environment);
2176 } else if (startswith(l, "kdbus-fd=")) {
2179 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2180 log_debug("Failed to parse kdbus fd: %s", l + 9);
2182 if (m->kdbus_fd >= 0)
2183 close_nointr_nofail(m->kdbus_fd);
2185 m->kdbus_fd = fdset_remove(fds, fd);
2188 } else if (bus_deserialize_item(m, l) == 0)
2189 log_debug("Unknown serialization item '%s'", l);
2194 char name[UNIT_NAME_MAX+2];
2197 if (!fgets(name, sizeof(name), f)) {
2208 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2212 r = unit_deserialize(u, f, fds);
2221 assert(m->n_reloading > 0);
2227 int manager_reload(Manager *m) {
2229 _cleanup_fclose_ FILE *f = NULL;
2230 _cleanup_fdset_free_ FDSet *fds = NULL;
2234 r = manager_open_serialization(m, &f);
2239 bus_manager_send_reloading(m, true);
2247 r = manager_serialize(m, f, fds, false);
2253 if (fseeko(f, 0, SEEK_SET) < 0) {
2258 /* From here on there is no way back. */
2259 manager_clear_jobs_and_units(m);
2260 manager_undo_generators(m);
2261 lookup_paths_free(&m->lookup_paths);
2263 /* Find new unit paths */
2264 manager_run_generators(m);
2266 q = lookup_paths_init(
2267 &m->lookup_paths, m->running_as, true,
2268 m->generator_unit_path,
2269 m->generator_unit_path_early,
2270 m->generator_unit_path_late);
2274 manager_build_unit_path_cache(m);
2276 /* First, enumerate what we can from all config files */
2277 q = manager_enumerate(m);
2281 /* Second, deserialize our stored data */
2282 q = manager_deserialize(m, f, fds);
2289 /* Third, fire things up! */
2290 q = manager_coldplug(m);
2294 assert(m->n_reloading > 0);
2297 m->send_reloading_done = true;
2302 static bool manager_is_booting_or_shutting_down(Manager *m) {
2307 /* Is the initial job still around? */
2308 if (manager_get_job(m, m->default_unit_job_id))
2311 /* Is there a job for the shutdown target? */
2312 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2319 bool manager_is_reloading_or_reexecuting(Manager *m) {
2322 return m->n_reloading != 0;
2325 void manager_reset_failed(Manager *m) {
2331 HASHMAP_FOREACH(u, m->units, i)
2332 unit_reset_failed(u);
2335 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2341 /* Returns true if the unit is inactive or going down */
2342 u = manager_get_unit(m, name);
2346 return unit_inactive_or_pending(u);
2349 void manager_check_finished(Manager *m) {
2350 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2351 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2355 if (m->n_running_jobs == 0)
2356 m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
2358 if (hashmap_size(m->jobs) > 0) {
2359 if (m->jobs_in_progress_event_source)
2360 sd_event_source_set_time(m->jobs_in_progress_event_source, JOBS_IN_PROGRESS_PERIOD_SEC);
2364 /* Notify Type=idle units that we are done now */
2365 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2366 manager_close_idle_pipe(m);
2368 /* Turn off confirm spawn now */
2369 m->confirm_spawn = false;
2371 if (dual_timestamp_is_set(&m->finish_timestamp))
2374 dual_timestamp_get(&m->finish_timestamp);
2376 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2378 /* Note that m->kernel_usec.monotonic is always at 0,
2379 * and m->firmware_usec.monotonic and
2380 * m->loader_usec.monotonic should be considered
2381 * negative values. */
2383 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2384 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2385 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2386 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2388 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2390 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2391 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2393 if (!log_on_console())
2394 log_struct(LOG_INFO,
2395 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2396 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2397 "INITRD_USEC=%llu", (unsigned long long) initrd_usec,
2398 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2399 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2400 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2401 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2402 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2403 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2406 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2409 if (!log_on_console())
2410 log_struct(LOG_INFO,
2411 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2412 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2413 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2414 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2415 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2416 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2417 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2421 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2422 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2424 if (!log_on_console())
2425 log_struct(LOG_INFO,
2426 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2427 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2428 "MESSAGE=Startup finished in %s.",
2429 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2433 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2436 "READY=1\nSTATUS=Startup finished in %s.",
2437 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2440 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2451 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2453 p = strappend("/run/systemd/", name);
2457 r = mkdir_p_label(p, 0755);
2459 log_error("Failed to create generator directory %s: %s",
2465 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2470 log_error("Failed to create generator directory %s: %m",
2481 static void trim_generator_dir(Manager *m, char **generator) {
2488 if (rmdir(*generator) >= 0) {
2496 void manager_run_generators(Manager *m) {
2497 _cleanup_closedir_ DIR *d = NULL;
2498 const char *generator_path;
2499 const char *argv[5];
2504 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2505 d = opendir(generator_path);
2507 if (errno == ENOENT)
2510 log_error("Failed to enumerate generator directory %s: %m",
2515 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2519 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2523 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2527 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2528 argv[1] = m->generator_unit_path;
2529 argv[2] = m->generator_unit_path_early;
2530 argv[3] = m->generator_unit_path_late;
2533 RUN_WITH_UMASK(0022)
2534 execute_directory(generator_path, d, (char**) argv);
2537 trim_generator_dir(m, &m->generator_unit_path);
2538 trim_generator_dir(m, &m->generator_unit_path_early);
2539 trim_generator_dir(m, &m->generator_unit_path_late);
2542 static void remove_generator_dir(Manager *m, char **generator) {
2549 strv_remove(m->lookup_paths.unit_path, *generator);
2550 rm_rf(*generator, false, true, false);
2556 void manager_undo_generators(Manager *m) {
2559 remove_generator_dir(m, &m->generator_unit_path);
2560 remove_generator_dir(m, &m->generator_unit_path_early);
2561 remove_generator_dir(m, &m->generator_unit_path_late);
2564 int manager_environment_add(Manager *m, char **minus, char **plus) {
2565 char **a = NULL, **b = NULL, **l;
2570 if (!strv_isempty(minus)) {
2571 a = strv_env_delete(l, 1, minus);
2578 if (!strv_isempty(plus)) {
2579 b = strv_env_merge(2, l, plus);
2586 if (m->environment != l)
2587 strv_free(m->environment);
2593 m->environment = strv_sort(l);
2597 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2602 for (i = 0; i < RLIMIT_NLIMITS; i++) {
2603 if (!default_rlimit[i])
2606 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2614 void manager_recheck_journal(Manager *m) {
2619 if (m->running_as != SYSTEMD_SYSTEM)
2622 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2623 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2624 log_close_journal();
2628 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2629 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2630 log_close_journal();
2634 /* Hmm, OK, so the socket is fully up and the service is up
2635 * too, then let's make use of the thing. */
2639 void manager_set_show_status(Manager *m, bool b) {
2642 if (m->running_as != SYSTEMD_SYSTEM)
2648 touch("/run/systemd/show-status");
2650 unlink("/run/systemd/show-status");
2653 static bool manager_get_show_status(Manager *m) {
2656 if (m->running_as != SYSTEMD_SYSTEM)
2659 if (m->no_console_output)
2665 /* If Plymouth is running make sure we show the status, so
2666 * that there's something nice to see when people press Esc */
2668 return plymouth_running();
2671 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
2674 if (!manager_get_show_status(m))
2677 /* XXX We should totally drop the check for ephemeral here
2678 * and thus effectively make 'Type=idle' pointless. */
2679 if (ephemeral && m->n_on_console > 0)
2682 if (!manager_is_booting_or_shutting_down(m))
2685 va_start(ap, format);
2686 status_vprintf(status, true, ephemeral, format, ap);
2690 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
2691 _cleanup_free_ char *p = NULL;
2699 p = unit_name_from_path(path, suffix);
2703 found = manager_get_unit(m, p);
2713 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
2714 char p[strlen(path)+1];
2720 path_kill_slashes(p);
2722 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);