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/>.
25 #include <sys/epoll.h>
27 #include <sys/signalfd.h>
31 #include <sys/reboot.h>
32 #include <sys/ioctl.h>
36 #include <sys/types.h>
39 #include <sys/timerfd.h>
45 #include "systemd/sd-daemon.h"
46 #include "systemd/sd-id128.h"
47 #include "systemd/sd-messages.h"
50 #include "transaction.h"
57 #include "ratelimit.h"
59 #include "mount-setup.h"
60 #include "unit-name.h"
61 #include "dbus-unit.h"
64 #include "path-lookup.h"
66 #include "bus-errors.h"
67 #include "exit-status.h"
70 #include "cgroup-util.h"
71 #include "path-util.h"
76 /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
77 #define GC_QUEUE_ENTRIES_MAX 16
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_setup_notify(Manager *m) {
95 struct sockaddr_un un;
97 .sa.sa_family = AF_UNIX,
99 struct epoll_event ev = {
101 .data.ptr = &m->notify_watch,
105 m->notify_watch.type = WATCH_NOTIFY;
106 m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
107 if (m->notify_watch.fd < 0) {
108 log_error("Failed to allocate notification socket: %m");
112 if (getpid() != 1 || detect_container(NULL) > 0)
113 snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull());
115 strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path));
117 sa.un.sun_path[0] = 0;
119 r = bind(m->notify_watch.fd, &sa.sa,
120 offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1));
122 log_error("bind() failed: %m");
126 r = setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
128 log_error("SO_PASSCRED failed: %m");
132 r = epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev);
134 log_error("Failed to add notification socket fd to epoll: %m");
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_jobs_in_progress_mod_timer(Manager *m) {
149 struct itimerspec its = {
150 .it_value.tv_sec = JOBS_IN_PROGRESS_WAIT_SEC,
151 .it_interval.tv_sec = JOBS_IN_PROGRESS_PERIOD_SEC,
154 if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS)
157 if (timerfd_settime(m->jobs_in_progress_watch.fd, 0, &its, NULL) < 0)
163 static int manager_watch_jobs_in_progress(Manager *m) {
164 struct epoll_event ev = {
166 .data.ptr = &m->jobs_in_progress_watch,
170 if (m->jobs_in_progress_watch.type != WATCH_INVALID)
173 m->jobs_in_progress_watch.type = WATCH_JOBS_IN_PROGRESS;
174 m->jobs_in_progress_watch.fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
175 if (m->jobs_in_progress_watch.fd < 0) {
176 log_error("Failed to create timerfd: %m");
181 r = manager_jobs_in_progress_mod_timer(m);
183 log_error("Failed to set up timer for jobs progress watch: %s", strerror(-r));
187 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->jobs_in_progress_watch.fd, &ev) < 0) {
188 log_error("Failed to add jobs progress timer fd to epoll: %m");
193 log_debug("Set up jobs progress timerfd.");
198 if (m->jobs_in_progress_watch.fd >= 0)
199 close_nointr_nofail(m->jobs_in_progress_watch.fd);
200 watch_init(&m->jobs_in_progress_watch);
204 static void manager_unwatch_jobs_in_progress(Manager *m) {
205 if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS)
208 assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->jobs_in_progress_watch.fd, NULL) >= 0);
209 close_nointr_nofail(m->jobs_in_progress_watch.fd);
210 watch_init(&m->jobs_in_progress_watch);
211 m->jobs_in_progress_iteration = 0;
213 log_debug("Closed jobs progress timerfd.");
216 #define CYLON_BUFFER_EXTRA (2*strlen(ANSI_RED_ON) + strlen(ANSI_HIGHLIGHT_RED_ON) + 2*strlen(ANSI_HIGHLIGHT_OFF))
217 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
220 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
221 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
225 p = mempset(p, ' ', pos-2);
226 p = stpcpy(p, ANSI_RED_ON);
230 if (pos > 0 && pos <= width) {
231 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
235 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
238 p = stpcpy(p, ANSI_RED_ON);
241 p = mempset(p, ' ', width-1-pos);
242 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
246 static void manager_print_jobs_in_progress(Manager *m) {
249 char *job_of_n = NULL;
250 unsigned counter = 0, print_nr;
251 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
254 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
256 HASHMAP_FOREACH(j, m->jobs, i)
257 if (j->state == JOB_RUNNING && counter++ == print_nr)
260 /* m->n_running_jobs must be consistent with the contents of m->jobs,
261 * so the above loop must have succeeded in finding j. */
262 assert(counter == print_nr + 1);
264 cylon_pos = m->jobs_in_progress_iteration % 14;
266 cylon_pos = 14 - cylon_pos;
267 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
269 if (m->n_running_jobs > 1)
270 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
273 manager_status_printf(m, true, cylon, "%sA %s job is running for %s",
274 strempty(job_of_n), job_type_to_string(j->type), unit_description(j->unit));
277 m->jobs_in_progress_iteration++;
280 static int manager_setup_time_change(Manager *m) {
281 struct epoll_event ev = {
283 .data.ptr = &m->time_change_watch,
286 /* We only care for the cancellation event, hence we set the
287 * timeout to the latest possible value. */
288 struct itimerspec its = {
289 .it_value.tv_sec = TIME_T_MAX,
291 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
293 assert(m->time_change_watch.type == WATCH_INVALID);
295 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
296 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
298 m->time_change_watch.type = WATCH_TIME_CHANGE;
299 m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
300 if (m->time_change_watch.fd < 0) {
301 log_error("Failed to create timerfd: %m");
305 if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
306 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
307 close_nointr_nofail(m->time_change_watch.fd);
308 watch_init(&m->time_change_watch);
312 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) {
313 log_error("Failed to add timer change fd to epoll: %m");
317 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
322 static int enable_special_signals(Manager *m) {
327 /* Enable that we get SIGINT on control-alt-del. In containers
328 * this will fail with EPERM (older) or EINVAL (newer), so
330 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
331 log_warning("Failed to enable ctrl-alt-del handling: %m");
333 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
335 /* Support systems without virtual console */
337 log_warning("Failed to open /dev/tty0: %m");
339 /* Enable that we get SIGWINCH on kbrequest */
340 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
341 log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
343 close_nointr_nofail(fd);
349 static int manager_setup_signals(Manager *m) {
351 struct epoll_event ev = {
353 .data.ptr = &m->signal_watch,
355 struct sigaction sa = {
356 .sa_handler = SIG_DFL,
357 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
362 /* We are not interested in SIGSTOP and friends. */
363 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
365 assert_se(sigemptyset(&mask) == 0);
367 sigset_add_many(&mask,
368 SIGCHLD, /* Child died */
369 SIGTERM, /* Reexecute daemon */
370 SIGHUP, /* Reload configuration */
371 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
372 SIGUSR2, /* systemd: dump status */
373 SIGINT, /* Kernel sends us this on control-alt-del */
374 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
375 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
376 SIGRTMIN+0, /* systemd: start default.target */
377 SIGRTMIN+1, /* systemd: isolate rescue.target */
378 SIGRTMIN+2, /* systemd: isolate emergency.target */
379 SIGRTMIN+3, /* systemd: start halt.target */
380 SIGRTMIN+4, /* systemd: start poweroff.target */
381 SIGRTMIN+5, /* systemd: start reboot.target */
382 SIGRTMIN+6, /* systemd: start kexec.target */
383 SIGRTMIN+13, /* systemd: Immediate halt */
384 SIGRTMIN+14, /* systemd: Immediate poweroff */
385 SIGRTMIN+15, /* systemd: Immediate reboot */
386 SIGRTMIN+16, /* systemd: Immediate kexec */
387 SIGRTMIN+20, /* systemd: enable status messages */
388 SIGRTMIN+21, /* systemd: disable status messages */
389 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
390 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
391 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
392 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
393 SIGRTMIN+27, /* systemd: set log target to console */
394 SIGRTMIN+28, /* systemd: set log target to kmsg */
395 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */
397 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
399 m->signal_watch.type = WATCH_SIGNAL;
400 m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
401 if (m->signal_watch.fd < 0)
404 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
407 if (m->running_as == SYSTEMD_SYSTEM)
408 return enable_special_signals(m);
413 static void manager_strip_environment(Manager *m) {
416 /* Remove variables from the inherited set that are part of
417 * the container interface:
418 * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
419 strv_remove_prefix(m->environment, "container=");
420 strv_remove_prefix(m->environment, "container_");
422 /* Remove variables from the inherited set that are part of
423 * the initrd interface:
424 * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
425 strv_remove_prefix(m->environment, "RD_");
427 /* Drop invalid entries */
428 strv_env_clean(m->environment);
431 int manager_new(SystemdRunningAs running_as, Manager **_m) {
436 assert(running_as >= 0);
437 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
439 m = new0(Manager, 1);
444 if (detect_container(NULL) <= 0)
445 efi_get_boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
448 m->running_as = running_as;
449 m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
450 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
451 m->pin_cgroupfs_fd = -1;
452 m->idle_pipe[0] = m->idle_pipe[1] = -1;
454 watch_init(&m->signal_watch);
455 watch_init(&m->mount_watch);
456 watch_init(&m->swap_watch);
457 watch_init(&m->udev_watch);
458 watch_init(&m->time_change_watch);
459 watch_init(&m->jobs_in_progress_watch);
461 m->epoll_fd = m->dev_autofs_fd = -1;
462 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
464 m->environment = strv_copy(environ);
468 manager_strip_environment(m);
470 if (running_as == SYSTEMD_SYSTEM) {
471 m->default_controllers = strv_new("cpu", NULL);
472 if (!m->default_controllers)
476 if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
479 if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
482 if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
485 if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
488 if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
491 m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
495 r = manager_setup_signals(m);
499 r = manager_setup_cgroup(m);
503 r = manager_setup_notify(m);
507 r = manager_setup_time_change(m);
511 /* Try to connect to the busses, if possible. */
512 r = bus_init(m, running_as != SYSTEMD_SYSTEM);
516 m->taint_usr = dir_is_empty("/usr") > 0;
526 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
532 while ((u = m->cleanup_queue)) {
533 assert(u->in_cleanup_queue);
543 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
544 GC_OFFSET_UNSURE, /* No clue */
545 GC_OFFSET_GOOD, /* We still need this unit */
546 GC_OFFSET_BAD, /* We don't need this unit anymore */
550 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
557 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
558 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
559 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
562 if (u->in_cleanup_queue)
565 if (unit_check_gc(u))
568 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
572 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
573 unit_gc_sweep(other, gc_marker);
575 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
578 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
585 /* We were unable to find anything out about this entry, so
586 * let's investigate it later */
587 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
588 unit_add_to_gc_queue(u);
592 /* We definitely know that this one is not useful anymore, so
593 * let's mark it for deletion */
594 u->gc_marker = gc_marker + GC_OFFSET_BAD;
595 unit_add_to_cleanup_queue(u);
599 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
602 static unsigned manager_dispatch_gc_queue(Manager *m) {
609 if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
610 (m->gc_queue_timestamp <= 0 ||
611 (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
614 log_debug("Running GC...");
616 m->gc_marker += _GC_OFFSET_MAX;
617 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
620 gc_marker = m->gc_marker;
622 while ((u = m->gc_queue)) {
623 assert(u->in_gc_queue);
625 unit_gc_sweep(u, gc_marker);
627 LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
628 u->in_gc_queue = false;
632 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
633 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
634 log_debug_unit(u->id, "Collecting %s", u->id);
635 u->gc_marker = gc_marker + GC_OFFSET_BAD;
636 unit_add_to_cleanup_queue(u);
640 m->n_in_gc_queue = 0;
641 m->gc_queue_timestamp = 0;
646 static void manager_clear_jobs_and_units(Manager *m) {
651 while ((u = hashmap_first(m->units)))
654 manager_dispatch_cleanup_queue(m);
656 assert(!m->load_queue);
657 assert(!m->run_queue);
658 assert(!m->dbus_unit_queue);
659 assert(!m->dbus_job_queue);
660 assert(!m->cleanup_queue);
661 assert(!m->gc_queue);
663 assert(hashmap_isempty(m->jobs));
664 assert(hashmap_isempty(m->units));
667 m->n_running_jobs = 0;
670 void manager_free(Manager *m) {
676 manager_clear_jobs_and_units(m);
678 for (c = 0; c < _UNIT_TYPE_MAX; c++)
679 if (unit_vtable[c]->shutdown)
680 unit_vtable[c]->shutdown(m);
682 /* If we reexecute ourselves, we keep the root cgroup
684 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
686 manager_undo_generators(m);
690 hashmap_free(m->units);
691 hashmap_free(m->jobs);
692 hashmap_free(m->watch_pids);
693 hashmap_free(m->watch_bus);
695 if (m->epoll_fd >= 0)
696 close_nointr_nofail(m->epoll_fd);
697 if (m->signal_watch.fd >= 0)
698 close_nointr_nofail(m->signal_watch.fd);
699 if (m->notify_watch.fd >= 0)
700 close_nointr_nofail(m->notify_watch.fd);
701 if (m->time_change_watch.fd >= 0)
702 close_nointr_nofail(m->time_change_watch.fd);
703 if (m->jobs_in_progress_watch.fd >= 0)
704 close_nointr_nofail(m->jobs_in_progress_watch.fd);
706 free(m->notify_socket);
708 lookup_paths_free(&m->lookup_paths);
709 strv_free(m->environment);
711 strv_free(m->default_controllers);
713 hashmap_free(m->cgroup_bondings);
714 set_free_free(m->unit_path_cache);
716 close_pipe(m->idle_pipe);
718 free(m->switch_root);
719 free(m->switch_root_init);
721 for (i = 0; i < RLIMIT_NLIMITS; i++)
727 int manager_enumerate(Manager *m) {
733 /* Let's ask every type to load all units from disk/kernel
734 * that it might know */
735 for (c = 0; c < _UNIT_TYPE_MAX; c++)
736 if (unit_vtable[c]->enumerate)
737 if ((q = unit_vtable[c]->enumerate(m)) < 0)
740 manager_dispatch_load_queue(m);
744 int manager_coldplug(Manager *m) {
752 /* Then, let's set up their initial state. */
753 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
759 if ((q = unit_coldplug(u)) < 0)
766 static void manager_build_unit_path_cache(Manager *m) {
768 _cleanup_free_ DIR *d = NULL;
773 set_free_free(m->unit_path_cache);
775 m->unit_path_cache = set_new(string_hash_func, string_compare_func);
776 if (!m->unit_path_cache) {
777 log_error("Failed to allocate unit path cache.");
781 /* This simply builds a list of files we know exist, so that
782 * we don't always have to go to disk */
784 STRV_FOREACH(i, m->lookup_paths.unit_path) {
790 log_error("Failed to open directory %s: %m", *i);
794 while ((de = readdir(d))) {
797 if (ignore_file(de->d_name))
800 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
806 r = set_consume(m->unit_path_cache, p);
818 log_error("Failed to build unit path cache: %s", strerror(-r));
820 set_free_free(m->unit_path_cache);
821 m->unit_path_cache = NULL;
824 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
829 manager_run_generators(m);
831 r = lookup_paths_init(
832 &m->lookup_paths, m->running_as, true,
833 m->generator_unit_path,
834 m->generator_unit_path_early,
835 m->generator_unit_path_late);
839 manager_build_unit_path_cache(m);
841 /* If we will deserialize make sure that during enumeration
842 * this is already known, so we increase the counter here
847 /* First, enumerate what we can from all config files */
848 r = manager_enumerate(m);
850 /* Second, deserialize if there is something to deserialize */
852 q = manager_deserialize(m, serialization, fds);
857 /* Any fds left? Find some unit which wants them. This is
858 * useful to allow container managers to pass some file
859 * descriptors to us pre-initialized. This enables
860 * socket-based activation of entire containers. */
861 if (fdset_size(fds) > 0) {
862 q = manager_distribute_fds(m, fds);
867 /* Third, fire things up! */
868 q = manager_coldplug(m);
873 assert(m->n_reloading > 0);
880 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
885 assert(type < _JOB_TYPE_MAX);
887 assert(mode < _JOB_MODE_MAX);
889 if (mode == JOB_ISOLATE && type != JOB_START) {
890 dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
894 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
895 dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
899 log_debug_unit(unit->id,
900 "Trying to enqueue job %s/%s/%s", unit->id,
901 job_type_to_string(type), job_mode_to_string(mode));
903 job_type_collapse(&type, unit);
905 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
909 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
910 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
911 mode == JOB_IGNORE_DEPENDENCIES, e);
915 if (mode == JOB_ISOLATE) {
916 r = transaction_add_isolate_jobs(tr, m);
921 r = transaction_activate(tr, m, mode, e);
925 log_debug_unit(unit->id,
926 "Enqueued job %s/%s as %u", unit->id,
927 job_type_to_string(type), (unsigned) tr->anchor_job->id);
930 *_ret = tr->anchor_job;
932 transaction_free(tr);
936 transaction_abort(tr);
937 transaction_free(tr);
941 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
946 assert(type < _JOB_TYPE_MAX);
948 assert(mode < _JOB_MODE_MAX);
950 r = manager_load_unit(m, name, NULL, NULL, &unit);
954 return manager_add_job(m, type, unit, mode, override, e, _ret);
957 Job *manager_get_job(Manager *m, uint32_t id) {
960 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
963 Unit *manager_get_unit(Manager *m, const char *name) {
967 return hashmap_get(m->units, name);
970 unsigned manager_dispatch_load_queue(Manager *m) {
976 /* Make sure we are not run recursively */
977 if (m->dispatching_load_queue)
980 m->dispatching_load_queue = true;
982 /* Dispatches the load queue. Takes a unit from the queue and
983 * tries to load its data until the queue is empty */
985 while ((u = m->load_queue)) {
986 assert(u->in_load_queue);
992 m->dispatching_load_queue = false;
996 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1002 assert(name || path);
1004 /* This will prepare the unit for loading, but not actually
1005 * load anything from disk. */
1007 if (path && !is_path(path)) {
1008 dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
1013 name = path_get_file_name(path);
1015 t = unit_name_to_type(name);
1017 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) {
1018 dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
1022 ret = manager_get_unit(m, name);
1028 ret = unit_new(m, unit_vtable[t]->object_size);
1033 ret->fragment_path = strdup(path);
1034 if (!ret->fragment_path) {
1040 if ((r = unit_add_name(ret, name)) < 0) {
1045 unit_add_to_load_queue(ret);
1046 unit_add_to_dbus_queue(ret);
1047 unit_add_to_gc_queue(ret);
1055 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1060 /* This will load the service information files, but not actually
1061 * start any services or anything. */
1063 r = manager_load_unit_prepare(m, name, path, e, _ret);
1067 manager_dispatch_load_queue(m);
1070 *_ret = unit_follow_merge(*_ret);
1075 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1082 HASHMAP_FOREACH(j, s->jobs, i)
1083 job_dump(j, f, prefix);
1086 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1094 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1096 unit_dump(u, f, prefix);
1099 void manager_clear_jobs(Manager *m) {
1104 while ((j = hashmap_first(m->jobs)))
1105 /* No need to recurse. We're cancelling all jobs. */
1106 job_finish_and_invalidate(j, JOB_CANCELED, false);
1109 unsigned manager_dispatch_run_queue(Manager *m) {
1113 if (m->dispatching_run_queue)
1116 m->dispatching_run_queue = true;
1118 while ((j = m->run_queue)) {
1119 assert(j->installed);
1120 assert(j->in_run_queue);
1122 job_run_and_invalidate(j);
1126 m->dispatching_run_queue = false;
1128 if (m->n_running_jobs > 0)
1129 manager_watch_jobs_in_progress(m);
1134 unsigned manager_dispatch_dbus_queue(Manager *m) {
1141 if (m->dispatching_dbus_queue)
1144 m->dispatching_dbus_queue = true;
1146 while ((u = m->dbus_unit_queue)) {
1147 assert(u->in_dbus_queue);
1149 bus_unit_send_change_signal(u);
1153 while ((j = m->dbus_job_queue)) {
1154 assert(j->in_dbus_queue);
1156 bus_job_send_change_signal(j);
1160 m->dispatching_dbus_queue = false;
1164 static int manager_process_notify_fd(Manager *m) {
1171 struct iovec iovec = {
1173 .iov_len = sizeof(buf)-1,
1177 struct cmsghdr cmsghdr;
1178 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1181 struct msghdr msghdr = {
1184 .msg_control = &control,
1185 .msg_controllen = sizeof(control),
1187 struct ucred *ucred;
1189 _cleanup_strv_free_ char **tags = NULL;
1191 n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT);
1196 if (errno == EAGAIN || errno == EINTR)
1202 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1203 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1204 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1205 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1206 log_warning("Received notify message without credentials. Ignoring.");
1210 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1212 u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
1214 u = cgroup_unit_by_pid(m, ucred->pid);
1216 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
1221 assert((size_t) n < sizeof(buf));
1223 tags = strv_split(buf, "\n\r");
1227 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1229 if (UNIT_VTABLE(u)->notify_message)
1230 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
1236 static int manager_dispatch_sigchld(Manager *m) {
1244 /* First we call waitd() for a PID and do not reap the
1245 * zombie. That way we can still access /proc/$PID for
1246 * it while it is a zombie. */
1247 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1249 if (errno == ECHILD)
1261 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1262 _cleanup_free_ char *name = NULL;
1264 get_process_comm(si.si_pid, &name);
1265 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
1268 /* Let's flush any message the dying child might still
1269 * have queued for us. This ensures that the process
1270 * still exists in /proc so that we can figure out
1271 * which cgroup and hence unit it belongs to. */
1272 r = manager_process_notify_fd(m);
1276 /* And now figure out the unit this belongs to */
1277 u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
1279 u = cgroup_unit_by_pid(m, si.si_pid);
1281 /* And now, we actually reap the zombie. */
1282 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1289 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1292 log_debug("Child %lu died (code=%s, status=%i/%s)",
1293 (long unsigned) si.si_pid,
1294 sigchld_code_to_string(si.si_code),
1296 strna(si.si_code == CLD_EXITED
1297 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1298 : signal_to_string(si.si_status)));
1303 log_debug_unit(u->id,
1304 "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
1306 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
1307 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1313 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1317 dbus_error_init(&error);
1319 log_debug_unit(name, "Activating special unit %s", name);
1321 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1323 log_error_unit(name,
1324 "Failed to enqueue %s job: %s", name, bus_error(&error, r));
1326 dbus_error_free(&error);
1331 static int manager_process_signal_fd(Manager *m) {
1333 struct signalfd_siginfo sfsi;
1334 bool sigchld = false;
1339 n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi));
1340 if (n != sizeof(sfsi)) {
1345 if (errno == EINTR || errno == EAGAIN)
1351 if (sfsi.ssi_pid > 0) {
1354 get_process_comm(sfsi.ssi_pid, &p);
1356 log_debug("Received SIG%s from PID %lu (%s).",
1357 signal_to_string(sfsi.ssi_signo),
1358 (unsigned long) sfsi.ssi_pid, strna(p));
1361 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
1363 switch (sfsi.ssi_signo) {
1370 if (m->running_as == SYSTEMD_SYSTEM) {
1371 /* This is for compatibility with the
1372 * original sysvinit */
1373 m->exit_code = MANAGER_REEXECUTE;
1380 if (m->running_as == SYSTEMD_SYSTEM) {
1381 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1385 /* Run the exit target if there is one, if not, just exit. */
1386 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1387 m->exit_code = MANAGER_EXIT;
1394 if (m->running_as == SYSTEMD_SYSTEM)
1395 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1397 /* This is a nop on non-init */
1401 if (m->running_as == SYSTEMD_SYSTEM)
1402 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1404 /* This is a nop on non-init */
1410 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1412 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1413 log_info("Trying to reconnect to bus...");
1417 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1418 log_info("Loading D-Bus service...");
1419 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1430 if (!(f = open_memstream(&dump, &size))) {
1431 log_warning("Failed to allocate memory stream.");
1435 manager_dump_units(m, f, "\t");
1436 manager_dump_jobs(m, f, "\t");
1441 log_warning("Failed to write status stream");
1446 log_dump(LOG_INFO, dump);
1453 m->exit_code = MANAGER_RELOAD;
1458 /* Starting SIGRTMIN+0 */
1459 static const char * const target_table[] = {
1460 [0] = SPECIAL_DEFAULT_TARGET,
1461 [1] = SPECIAL_RESCUE_TARGET,
1462 [2] = SPECIAL_EMERGENCY_TARGET,
1463 [3] = SPECIAL_HALT_TARGET,
1464 [4] = SPECIAL_POWEROFF_TARGET,
1465 [5] = SPECIAL_REBOOT_TARGET,
1466 [6] = SPECIAL_KEXEC_TARGET
1469 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1470 static const ManagerExitCode code_table[] = {
1472 [1] = MANAGER_POWEROFF,
1473 [2] = MANAGER_REBOOT,
1477 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1478 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1479 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1480 manager_start_target(m, target_table[idx],
1481 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1485 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1486 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1487 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1491 switch (sfsi.ssi_signo - SIGRTMIN) {
1494 log_debug("Enabling showing of status.");
1495 manager_set_show_status(m, true);
1499 log_debug("Disabling showing of status.");
1500 manager_set_show_status(m, false);
1504 log_set_max_level(LOG_DEBUG);
1505 log_notice("Setting log level to debug.");
1509 log_set_max_level(LOG_INFO);
1510 log_notice("Setting log level to info.");
1514 if (m->running_as == SYSTEMD_USER) {
1515 m->exit_code = MANAGER_EXIT;
1519 /* This is a nop on init */
1523 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1524 log_notice("Setting log target to journal-or-kmsg.");
1528 log_set_target(LOG_TARGET_CONSOLE);
1529 log_notice("Setting log target to console.");
1533 log_set_target(LOG_TARGET_KMSG);
1534 log_notice("Setting log target to kmsg.");
1538 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1539 log_notice("Setting log target to syslog-or-kmsg.");
1543 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1550 return manager_dispatch_sigchld(m);
1555 static int process_event(Manager *m, struct epoll_event *ev) {
1562 assert_se(w = ev->data.ptr);
1564 if (w->type == WATCH_INVALID)
1571 /* An incoming signal? */
1572 if (ev->events != EPOLLIN)
1575 if ((r = manager_process_signal_fd(m)) < 0)
1582 /* An incoming daemon notification event? */
1583 if (ev->events != EPOLLIN)
1586 if ((r = manager_process_notify_fd(m)) < 0)
1593 /* Some fd event, to be dispatched to the units */
1594 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
1597 case WATCH_UNIT_TIMER:
1598 case WATCH_JOB_TIMER: {
1602 /* Some timer event, to be dispatched to the units */
1603 k = read(w->fd, &v, sizeof(v));
1604 if (k != sizeof(v)) {
1606 if (k < 0 && (errno == EINTR || errno == EAGAIN))
1609 log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read");
1610 return k < 0 ? -errno : -EIO;
1613 if (w->type == WATCH_UNIT_TIMER)
1614 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
1616 job_timer_event(w->data.job, v, w);
1621 /* Some mount table change, intended for the mount subsystem */
1622 mount_fd_event(m, ev->events);
1626 /* Some swap table change, intended for the swap subsystem */
1627 swap_fd_event(m, ev->events);
1631 /* Some notification from udev, intended for the device subsystem */
1632 device_fd_event(m, ev->events);
1635 case WATCH_DBUS_WATCH:
1636 bus_watch_event(m, w, ev->events);
1639 case WATCH_DBUS_TIMEOUT:
1640 bus_timeout_event(m, w, ev->events);
1643 case WATCH_TIME_CHANGE: {
1647 log_struct(LOG_INFO,
1648 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1649 "MESSAGE=Time has been changed",
1652 /* Restart the watch */
1653 epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->time_change_watch.fd,
1655 close_nointr_nofail(m->time_change_watch.fd);
1656 watch_init(&m->time_change_watch);
1657 manager_setup_time_change(m);
1659 HASHMAP_FOREACH(u, m->units, i) {
1660 if (UNIT_VTABLE(u)->time_change)
1661 UNIT_VTABLE(u)->time_change(u);
1667 case WATCH_JOBS_IN_PROGRESS: {
1670 /* not interested in the data */
1671 read(w->fd, &v, sizeof(v));
1673 manager_print_jobs_in_progress(m);
1678 log_error("event type=%i", w->type);
1679 assert_not_reached("Unknown epoll event type.");
1685 int manager_loop(Manager *m) {
1688 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1691 m->exit_code = MANAGER_RUNNING;
1693 /* Release the path cache */
1694 set_free_free(m->unit_path_cache);
1695 m->unit_path_cache = NULL;
1697 manager_check_finished(m);
1699 /* There might still be some zombies hanging around from
1700 * before we were exec()'ed. Leat's reap them */
1701 r = manager_dispatch_sigchld(m);
1705 while (m->exit_code == MANAGER_RUNNING) {
1706 struct epoll_event event;
1710 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1713 if (!ratelimit_test(&rl)) {
1714 /* Yay, something is going seriously wrong, pause a little */
1715 log_warning("Looping too fast. Throttling execution a little.");
1720 if (manager_dispatch_load_queue(m) > 0)
1723 if (manager_dispatch_run_queue(m) > 0)
1726 if (bus_dispatch(m) > 0)
1729 if (manager_dispatch_cleanup_queue(m) > 0)
1732 if (manager_dispatch_gc_queue(m) > 0)
1735 if (manager_dispatch_dbus_queue(m) > 0)
1738 if (swap_dispatch_reload(m) > 0)
1741 /* Sleep for half the watchdog time */
1742 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1743 wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
1749 n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
1761 r = process_event(m, &event);
1766 return m->exit_code;
1769 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) {
1778 if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
1781 n = bus_path_unescape(s+31);
1785 r = manager_load_unit(m, n, NULL, e, &u);
1796 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1805 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
1808 r = safe_atou(s + 30, &id);
1812 j = manager_get_job(m, id);
1821 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
1827 audit_fd = get_audit_fd();
1831 /* Don't generate audit events if the service was already
1832 * started and we're just deserializing */
1833 if (m->n_reloading > 0)
1836 if (m->running_as != SYSTEMD_SYSTEM)
1839 if (u->type != UNIT_SERVICE)
1842 p = unit_name_to_prefix_and_instance(u->id);
1844 log_error_unit(u->id,
1845 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
1849 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
1850 if (errno == EPERM) {
1851 /* We aren't allowed to send audit messages?
1852 * Then let's not retry again. */
1855 log_warning("Failed to send audit message: %m");
1863 void manager_send_unit_plymouth(Manager *m, Unit *u) {
1865 union sockaddr_union sa;
1867 char *message = NULL;
1869 /* Don't generate plymouth events if the service was already
1870 * started and we're just deserializing */
1871 if (m->n_reloading > 0)
1874 if (m->running_as != SYSTEMD_SYSTEM)
1877 if (u->type != UNIT_SERVICE &&
1878 u->type != UNIT_MOUNT &&
1879 u->type != UNIT_SWAP)
1882 /* We set SOCK_NONBLOCK here so that we rather drop the
1883 * message then wait for plymouth */
1884 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
1886 log_error("socket() failed: %m");
1891 sa.sa.sa_family = AF_UNIX;
1892 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
1893 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
1895 if (errno != EPIPE &&
1898 errno != ECONNREFUSED &&
1899 errno != ECONNRESET &&
1900 errno != ECONNABORTED)
1901 log_error("connect() failed: %m");
1906 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
1912 if (write(fd, message, n + 1) != n + 1) {
1914 if (errno != EPIPE &&
1917 errno != ECONNREFUSED &&
1918 errno != ECONNRESET &&
1919 errno != ECONNABORTED)
1920 log_error("Failed to write Plymouth message: %m");
1927 close_nointr_nofail(fd);
1932 void manager_dispatch_bus_name_owner_changed(
1935 const char* old_owner,
1936 const char *new_owner) {
1943 if (!(u = hashmap_get(m->watch_bus, name)))
1946 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
1949 void manager_dispatch_bus_query_pid_done(
1960 if (!(u = hashmap_get(m->watch_bus, name)))
1963 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
1966 int manager_open_serialization(Manager *m, FILE **_f) {
1973 if (m->running_as == SYSTEMD_SYSTEM)
1974 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
1976 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
1981 RUN_WITH_UMASK(0077) {
1982 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
1992 log_debug("Serializing state to %s", path);
1995 f = fdopen(fd, "w+");
2004 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2017 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2018 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2019 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2020 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2022 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2023 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2024 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2025 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2028 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2029 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2032 if (!switching_root) {
2033 STRV_FOREACH(e, m->environment) {
2034 _cleanup_free_ char *ce;
2038 fprintf(f, "env=%s\n", *e);
2044 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2048 if (!unit_can_serialize(u))
2055 if ((r = unit_serialize(u, f, fds, !switching_root)) < 0) {
2061 assert(m->n_reloading > 0);
2067 r = bus_fdset_add_all(m, fds);
2074 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2080 log_debug("Deserializing state...");
2085 char line[LINE_MAX], *l;
2087 if (!fgets(line, sizeof(line), f)) {
2102 if (startswith(l, "current-job-id=")) {
2105 if (safe_atou32(l+15, &id) < 0)
2106 log_debug("Failed to parse current job id value %s", l+15);
2108 m->current_job_id = MAX(m->current_job_id, id);
2109 } else if (startswith(l, "n-installed-jobs=")) {
2112 if (safe_atou32(l+17, &n) < 0)
2113 log_debug("Failed to parse installed jobs counter %s", l+17);
2115 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;
2123 } else if (startswith(l, "taint-usr=")) {
2126 if ((b = parse_boolean(l+10)) < 0)
2127 log_debug("Failed to parse taint /usr flag %s", l+10);
2129 m->taint_usr = m->taint_usr || b;
2130 } else if (startswith(l, "firmware-timestamp="))
2131 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2132 else if (startswith(l, "loader-timestamp="))
2133 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2134 else if (startswith(l, "kernel-timestamp="))
2135 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2136 else if (startswith(l, "initrd-timestamp="))
2137 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2138 else if (startswith(l, "userspace-timestamp="))
2139 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2140 else if (startswith(l, "finish-timestamp="))
2141 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2142 else if (startswith(l, "env=")) {
2143 _cleanup_free_ char *uce = NULL;
2146 uce = cunescape(l+4);
2152 e = strv_env_set(m->environment, uce);
2158 strv_free(m->environment);
2161 log_debug("Unknown serialization item '%s'", l);
2166 char name[UNIT_NAME_MAX+2];
2169 if (!fgets(name, sizeof(name), f)) {
2180 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2184 r = unit_deserialize(u, f, fds);
2195 assert(m->n_reloading > 0);
2201 int manager_distribute_fds(Manager *m, FDSet *fds) {
2208 HASHMAP_FOREACH(u, m->units, i) {
2210 if (fdset_size(fds) <= 0)
2213 if (UNIT_VTABLE(u)->distribute_fds) {
2214 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
2223 int manager_reload(Manager *m) {
2230 r = manager_open_serialization(m, &f);
2243 r = manager_serialize(m, f, fds, false);
2249 if (fseeko(f, 0, SEEK_SET) < 0) {
2255 /* From here on there is no way back. */
2256 manager_clear_jobs_and_units(m);
2257 manager_undo_generators(m);
2258 lookup_paths_free(&m->lookup_paths);
2260 /* Find new unit paths */
2261 manager_run_generators(m);
2263 q = lookup_paths_init(
2264 &m->lookup_paths, m->running_as, true,
2265 m->generator_unit_path,
2266 m->generator_unit_path_early,
2267 m->generator_unit_path_late);
2271 manager_build_unit_path_cache(m);
2273 /* First, enumerate what we can from all config files */
2274 q = manager_enumerate(m);
2278 /* Second, deserialize our stored data */
2279 q = manager_deserialize(m, f, fds);
2286 /* Third, fire things up! */
2287 q = manager_coldplug(m);
2291 assert(m->n_reloading > 0);
2304 static bool manager_is_booting_or_shutting_down(Manager *m) {
2309 /* Is the initial job still around? */
2310 if (manager_get_job(m, m->default_unit_job_id))
2313 /* Is there a job for the shutdown target? */
2314 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2321 bool manager_is_reloading_or_reexecuting(Manager *m) {
2324 return m->n_reloading != 0;
2327 void manager_reset_failed(Manager *m) {
2333 HASHMAP_FOREACH(u, m->units, i)
2334 unit_reset_failed(u);
2337 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2343 /* Returns true if the unit is inactive or going down */
2344 u = manager_get_unit(m, name);
2348 return unit_inactive_or_pending(u);
2351 void manager_check_finished(Manager *m) {
2352 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2353 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2357 if (m->n_running_jobs == 0)
2358 manager_unwatch_jobs_in_progress(m);
2360 if (hashmap_size(m->jobs) > 0) {
2361 manager_jobs_in_progress_mod_timer(m);
2365 /* Notify Type=idle units that we are done now */
2366 close_pipe(m->idle_pipe);
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_broadcast_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) {
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);
2546 static void remove_generator_dir(Manager *m, char **generator) {
2553 strv_remove(m->lookup_paths.unit_path, *generator);
2554 rm_rf(*generator, false, true, false);
2560 void manager_undo_generators(Manager *m) {
2563 remove_generator_dir(m, &m->generator_unit_path);
2564 remove_generator_dir(m, &m->generator_unit_path_early);
2565 remove_generator_dir(m, &m->generator_unit_path_late);
2568 int manager_set_default_controllers(Manager *m, char **controllers) {
2573 l = strv_copy(controllers);
2577 strv_free(m->default_controllers);
2578 m->default_controllers = l;
2580 cg_shorten_controllers(m->default_controllers);
2585 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2590 for (i = 0; i < RLIMIT_NLIMITS; i++) {
2591 if (!default_rlimit[i])
2594 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2602 void manager_recheck_journal(Manager *m) {
2607 if (m->running_as != SYSTEMD_SYSTEM)
2610 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2611 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2612 log_close_journal();
2616 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2617 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2618 log_close_journal();
2622 /* Hmm, OK, so the socket is fully up and the service is up
2623 * too, then let's make use of the thing. */
2627 void manager_set_show_status(Manager *m, bool b) {
2630 if (m->running_as != SYSTEMD_SYSTEM)
2636 touch("/run/systemd/show-status");
2638 unlink("/run/systemd/show-status");
2641 static bool manager_get_show_status(Manager *m) {
2644 if (m->running_as != SYSTEMD_SYSTEM)
2650 /* If Plymouth is running make sure we show the status, so
2651 * that there's something nice to see when people press Esc */
2653 return plymouth_running();
2656 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
2659 if (!manager_get_show_status(m))
2662 /* XXX We should totally drop the check for ephemeral here
2663 * and thus effectively make 'Type=idle' pointless. */
2664 if (ephemeral && m->n_on_console > 0)
2667 if (!manager_is_booting_or_shutting_down(m))
2670 va_start(ap, format);
2671 status_vprintf(status, true, ephemeral, format, ap);
2675 void watch_init(Watch *w) {
2678 w->type = WATCH_INVALID;