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 r = unit_add_name(ret, name);
1046 unit_add_to_load_queue(ret);
1047 unit_add_to_dbus_queue(ret);
1048 unit_add_to_gc_queue(ret);
1056 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1061 /* This will load the service information files, but not actually
1062 * start any services or anything. */
1064 r = manager_load_unit_prepare(m, name, path, e, _ret);
1068 manager_dispatch_load_queue(m);
1071 *_ret = unit_follow_merge(*_ret);
1076 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1083 HASHMAP_FOREACH(j, s->jobs, i)
1084 job_dump(j, f, prefix);
1087 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1095 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1097 unit_dump(u, f, prefix);
1100 void manager_clear_jobs(Manager *m) {
1105 while ((j = hashmap_first(m->jobs)))
1106 /* No need to recurse. We're cancelling all jobs. */
1107 job_finish_and_invalidate(j, JOB_CANCELED, false);
1110 unsigned manager_dispatch_run_queue(Manager *m) {
1114 if (m->dispatching_run_queue)
1117 m->dispatching_run_queue = true;
1119 while ((j = m->run_queue)) {
1120 assert(j->installed);
1121 assert(j->in_run_queue);
1123 job_run_and_invalidate(j);
1127 m->dispatching_run_queue = false;
1129 if (m->n_running_jobs > 0)
1130 manager_watch_jobs_in_progress(m);
1135 unsigned manager_dispatch_dbus_queue(Manager *m) {
1142 if (m->dispatching_dbus_queue)
1145 m->dispatching_dbus_queue = true;
1147 while ((u = m->dbus_unit_queue)) {
1148 assert(u->in_dbus_queue);
1150 bus_unit_send_change_signal(u);
1154 while ((j = m->dbus_job_queue)) {
1155 assert(j->in_dbus_queue);
1157 bus_job_send_change_signal(j);
1161 m->dispatching_dbus_queue = false;
1165 static int manager_process_notify_fd(Manager *m) {
1172 struct iovec iovec = {
1174 .iov_len = sizeof(buf)-1,
1178 struct cmsghdr cmsghdr;
1179 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1182 struct msghdr msghdr = {
1185 .msg_control = &control,
1186 .msg_controllen = sizeof(control),
1188 struct ucred *ucred;
1190 _cleanup_strv_free_ char **tags = NULL;
1192 n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT);
1197 if (errno == EAGAIN || errno == EINTR)
1203 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1204 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1205 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1206 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1207 log_warning("Received notify message without credentials. Ignoring.");
1211 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1213 u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
1215 u = cgroup_unit_by_pid(m, ucred->pid);
1217 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
1222 assert((size_t) n < sizeof(buf));
1224 tags = strv_split(buf, "\n\r");
1228 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1230 if (UNIT_VTABLE(u)->notify_message)
1231 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
1237 static int manager_dispatch_sigchld(Manager *m) {
1245 /* First we call waitd() for a PID and do not reap the
1246 * zombie. That way we can still access /proc/$PID for
1247 * it while it is a zombie. */
1248 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1250 if (errno == ECHILD)
1262 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1263 _cleanup_free_ char *name = NULL;
1265 get_process_comm(si.si_pid, &name);
1266 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
1269 /* Let's flush any message the dying child might still
1270 * have queued for us. This ensures that the process
1271 * still exists in /proc so that we can figure out
1272 * which cgroup and hence unit it belongs to. */
1273 r = manager_process_notify_fd(m);
1277 /* And now figure out the unit this belongs to */
1278 u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
1280 u = cgroup_unit_by_pid(m, si.si_pid);
1282 /* And now, we actually reap the zombie. */
1283 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1290 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1293 log_debug("Child %lu died (code=%s, status=%i/%s)",
1294 (long unsigned) si.si_pid,
1295 sigchld_code_to_string(si.si_code),
1297 strna(si.si_code == CLD_EXITED
1298 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1299 : signal_to_string(si.si_status)));
1304 log_debug_unit(u->id,
1305 "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
1307 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
1308 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1314 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1318 dbus_error_init(&error);
1320 log_debug_unit(name, "Activating special unit %s", name);
1322 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1324 log_error_unit(name,
1325 "Failed to enqueue %s job: %s", name, bus_error(&error, r));
1327 dbus_error_free(&error);
1332 static int manager_process_signal_fd(Manager *m) {
1334 struct signalfd_siginfo sfsi;
1335 bool sigchld = false;
1340 n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi));
1341 if (n != sizeof(sfsi)) {
1346 if (errno == EINTR || errno == EAGAIN)
1352 if (sfsi.ssi_pid > 0) {
1355 get_process_comm(sfsi.ssi_pid, &p);
1357 log_debug("Received SIG%s from PID %lu (%s).",
1358 signal_to_string(sfsi.ssi_signo),
1359 (unsigned long) sfsi.ssi_pid, strna(p));
1362 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
1364 switch (sfsi.ssi_signo) {
1371 if (m->running_as == SYSTEMD_SYSTEM) {
1372 /* This is for compatibility with the
1373 * original sysvinit */
1374 m->exit_code = MANAGER_REEXECUTE;
1381 if (m->running_as == SYSTEMD_SYSTEM) {
1382 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1386 /* Run the exit target if there is one, if not, just exit. */
1387 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1388 m->exit_code = MANAGER_EXIT;
1395 if (m->running_as == SYSTEMD_SYSTEM)
1396 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1398 /* This is a nop on non-init */
1402 if (m->running_as == SYSTEMD_SYSTEM)
1403 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1405 /* This is a nop on non-init */
1411 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1413 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1414 log_info("Trying to reconnect to bus...");
1418 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1419 log_info("Loading D-Bus service...");
1420 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1431 if (!(f = open_memstream(&dump, &size))) {
1432 log_warning("Failed to allocate memory stream.");
1436 manager_dump_units(m, f, "\t");
1437 manager_dump_jobs(m, f, "\t");
1442 log_warning("Failed to write status stream");
1447 log_dump(LOG_INFO, dump);
1454 m->exit_code = MANAGER_RELOAD;
1459 /* Starting SIGRTMIN+0 */
1460 static const char * const target_table[] = {
1461 [0] = SPECIAL_DEFAULT_TARGET,
1462 [1] = SPECIAL_RESCUE_TARGET,
1463 [2] = SPECIAL_EMERGENCY_TARGET,
1464 [3] = SPECIAL_HALT_TARGET,
1465 [4] = SPECIAL_POWEROFF_TARGET,
1466 [5] = SPECIAL_REBOOT_TARGET,
1467 [6] = SPECIAL_KEXEC_TARGET
1470 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1471 static const ManagerExitCode code_table[] = {
1473 [1] = MANAGER_POWEROFF,
1474 [2] = MANAGER_REBOOT,
1478 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1479 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1480 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1481 manager_start_target(m, target_table[idx],
1482 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1486 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1487 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1488 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1492 switch (sfsi.ssi_signo - SIGRTMIN) {
1495 log_debug("Enabling showing of status.");
1496 manager_set_show_status(m, true);
1500 log_debug("Disabling showing of status.");
1501 manager_set_show_status(m, false);
1505 log_set_max_level(LOG_DEBUG);
1506 log_notice("Setting log level to debug.");
1510 log_set_max_level(LOG_INFO);
1511 log_notice("Setting log level to info.");
1515 if (m->running_as == SYSTEMD_USER) {
1516 m->exit_code = MANAGER_EXIT;
1520 /* This is a nop on init */
1524 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1525 log_notice("Setting log target to journal-or-kmsg.");
1529 log_set_target(LOG_TARGET_CONSOLE);
1530 log_notice("Setting log target to console.");
1534 log_set_target(LOG_TARGET_KMSG);
1535 log_notice("Setting log target to kmsg.");
1539 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1540 log_notice("Setting log target to syslog-or-kmsg.");
1544 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1551 return manager_dispatch_sigchld(m);
1556 static int process_event(Manager *m, struct epoll_event *ev) {
1563 assert_se(w = ev->data.ptr);
1565 if (w->type == WATCH_INVALID)
1572 /* An incoming signal? */
1573 if (ev->events != EPOLLIN)
1576 if ((r = manager_process_signal_fd(m)) < 0)
1583 /* An incoming daemon notification event? */
1584 if (ev->events != EPOLLIN)
1587 if ((r = manager_process_notify_fd(m)) < 0)
1594 /* Some fd event, to be dispatched to the units */
1595 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
1598 case WATCH_UNIT_TIMER:
1599 case WATCH_JOB_TIMER: {
1603 /* Some timer event, to be dispatched to the units */
1604 k = read(w->fd, &v, sizeof(v));
1605 if (k != sizeof(v)) {
1607 if (k < 0 && (errno == EINTR || errno == EAGAIN))
1610 log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read");
1611 return k < 0 ? -errno : -EIO;
1614 if (w->type == WATCH_UNIT_TIMER)
1615 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
1617 job_timer_event(w->data.job, v, w);
1622 /* Some mount table change, intended for the mount subsystem */
1623 mount_fd_event(m, ev->events);
1627 /* Some swap table change, intended for the swap subsystem */
1628 swap_fd_event(m, ev->events);
1632 /* Some notification from udev, intended for the device subsystem */
1633 device_fd_event(m, ev->events);
1636 case WATCH_DBUS_WATCH:
1637 bus_watch_event(m, w, ev->events);
1640 case WATCH_DBUS_TIMEOUT:
1641 bus_timeout_event(m, w, ev->events);
1644 case WATCH_TIME_CHANGE: {
1648 log_struct(LOG_INFO,
1649 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1650 "MESSAGE=Time has been changed",
1653 /* Restart the watch */
1654 epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->time_change_watch.fd,
1656 close_nointr_nofail(m->time_change_watch.fd);
1657 watch_init(&m->time_change_watch);
1658 manager_setup_time_change(m);
1660 HASHMAP_FOREACH(u, m->units, i) {
1661 if (UNIT_VTABLE(u)->time_change)
1662 UNIT_VTABLE(u)->time_change(u);
1668 case WATCH_JOBS_IN_PROGRESS: {
1671 /* not interested in the data */
1672 read(w->fd, &v, sizeof(v));
1674 manager_print_jobs_in_progress(m);
1679 log_error("event type=%i", w->type);
1680 assert_not_reached("Unknown epoll event type.");
1686 int manager_loop(Manager *m) {
1689 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1692 m->exit_code = MANAGER_RUNNING;
1694 /* Release the path cache */
1695 set_free_free(m->unit_path_cache);
1696 m->unit_path_cache = NULL;
1698 manager_check_finished(m);
1700 /* There might still be some zombies hanging around from
1701 * before we were exec()'ed. Leat's reap them */
1702 r = manager_dispatch_sigchld(m);
1706 while (m->exit_code == MANAGER_RUNNING) {
1707 struct epoll_event event;
1711 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1714 if (!ratelimit_test(&rl)) {
1715 /* Yay, something is going seriously wrong, pause a little */
1716 log_warning("Looping too fast. Throttling execution a little.");
1721 if (manager_dispatch_load_queue(m) > 0)
1724 if (manager_dispatch_run_queue(m) > 0)
1727 if (bus_dispatch(m) > 0)
1730 if (manager_dispatch_cleanup_queue(m) > 0)
1733 if (manager_dispatch_gc_queue(m) > 0)
1736 if (manager_dispatch_dbus_queue(m) > 0)
1739 if (swap_dispatch_reload(m) > 0)
1742 /* Sleep for half the watchdog time */
1743 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1744 wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
1750 n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
1762 r = process_event(m, &event);
1767 return m->exit_code;
1770 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) {
1779 if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
1782 n = bus_path_unescape(s+31);
1786 r = manager_load_unit(m, n, NULL, e, &u);
1797 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1806 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
1809 r = safe_atou(s + 30, &id);
1813 j = manager_get_job(m, id);
1822 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
1828 audit_fd = get_audit_fd();
1832 /* Don't generate audit events if the service was already
1833 * started and we're just deserializing */
1834 if (m->n_reloading > 0)
1837 if (m->running_as != SYSTEMD_SYSTEM)
1840 if (u->type != UNIT_SERVICE)
1843 p = unit_name_to_prefix_and_instance(u->id);
1845 log_error_unit(u->id,
1846 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
1850 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
1851 if (errno == EPERM) {
1852 /* We aren't allowed to send audit messages?
1853 * Then let's not retry again. */
1856 log_warning("Failed to send audit message: %m");
1864 void manager_send_unit_plymouth(Manager *m, Unit *u) {
1866 union sockaddr_union sa;
1868 char *message = NULL;
1870 /* Don't generate plymouth events if the service was already
1871 * started and we're just deserializing */
1872 if (m->n_reloading > 0)
1875 if (m->running_as != SYSTEMD_SYSTEM)
1878 if (u->type != UNIT_SERVICE &&
1879 u->type != UNIT_MOUNT &&
1880 u->type != UNIT_SWAP)
1883 /* We set SOCK_NONBLOCK here so that we rather drop the
1884 * message then wait for plymouth */
1885 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
1887 log_error("socket() failed: %m");
1892 sa.sa.sa_family = AF_UNIX;
1893 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
1894 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
1896 if (errno != EPIPE &&
1899 errno != ECONNREFUSED &&
1900 errno != ECONNRESET &&
1901 errno != ECONNABORTED)
1902 log_error("connect() failed: %m");
1907 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
1913 if (write(fd, message, n + 1) != n + 1) {
1915 if (errno != EPIPE &&
1918 errno != ECONNREFUSED &&
1919 errno != ECONNRESET &&
1920 errno != ECONNABORTED)
1921 log_error("Failed to write Plymouth message: %m");
1928 close_nointr_nofail(fd);
1933 void manager_dispatch_bus_name_owner_changed(
1936 const char* old_owner,
1937 const char *new_owner) {
1944 if (!(u = hashmap_get(m->watch_bus, name)))
1947 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
1950 void manager_dispatch_bus_query_pid_done(
1961 if (!(u = hashmap_get(m->watch_bus, name)))
1964 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
1967 int manager_open_serialization(Manager *m, FILE **_f) {
1974 if (m->running_as == SYSTEMD_SYSTEM)
1975 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
1977 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
1982 RUN_WITH_UMASK(0077) {
1983 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
1993 log_debug("Serializing state to %s", path);
1996 f = fdopen(fd, "w+");
2005 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2018 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2019 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2020 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2021 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2023 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2024 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2025 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2026 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2029 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2030 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2033 if (!switching_root) {
2034 STRV_FOREACH(e, m->environment) {
2035 _cleanup_free_ char *ce;
2039 fprintf(f, "env=%s\n", *e);
2045 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2049 if (!unit_can_serialize(u))
2056 if ((r = unit_serialize(u, f, fds, !switching_root)) < 0) {
2062 assert(m->n_reloading > 0);
2068 r = bus_fdset_add_all(m, fds);
2075 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2081 log_debug("Deserializing state...");
2086 char line[LINE_MAX], *l;
2088 if (!fgets(line, sizeof(line), f)) {
2103 if (startswith(l, "current-job-id=")) {
2106 if (safe_atou32(l+15, &id) < 0)
2107 log_debug("Failed to parse current job id value %s", l+15);
2109 m->current_job_id = MAX(m->current_job_id, id);
2110 } else if (startswith(l, "n-installed-jobs=")) {
2113 if (safe_atou32(l+17, &n) < 0)
2114 log_debug("Failed to parse installed jobs counter %s", l+17);
2116 m->n_installed_jobs += n;
2117 } else if (startswith(l, "n-failed-jobs=")) {
2120 if (safe_atou32(l+14, &n) < 0)
2121 log_debug("Failed to parse failed jobs counter %s", l+14);
2123 m->n_failed_jobs += n;
2124 } else if (startswith(l, "taint-usr=")) {
2127 if ((b = parse_boolean(l+10)) < 0)
2128 log_debug("Failed to parse taint /usr flag %s", l+10);
2130 m->taint_usr = m->taint_usr || b;
2131 } else if (startswith(l, "firmware-timestamp="))
2132 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2133 else if (startswith(l, "loader-timestamp="))
2134 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2135 else if (startswith(l, "kernel-timestamp="))
2136 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2137 else if (startswith(l, "initrd-timestamp="))
2138 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2139 else if (startswith(l, "userspace-timestamp="))
2140 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2141 else if (startswith(l, "finish-timestamp="))
2142 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2143 else if (startswith(l, "env=")) {
2144 _cleanup_free_ char *uce = NULL;
2147 uce = cunescape(l+4);
2153 e = strv_env_set(m->environment, uce);
2159 strv_free(m->environment);
2162 log_debug("Unknown serialization item '%s'", l);
2167 char name[UNIT_NAME_MAX+2];
2170 if (!fgets(name, sizeof(name), f)) {
2181 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2185 r = unit_deserialize(u, f, fds);
2196 assert(m->n_reloading > 0);
2202 int manager_distribute_fds(Manager *m, FDSet *fds) {
2209 HASHMAP_FOREACH(u, m->units, i) {
2211 if (fdset_size(fds) <= 0)
2214 if (UNIT_VTABLE(u)->distribute_fds) {
2215 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
2224 int manager_reload(Manager *m) {
2231 r = manager_open_serialization(m, &f);
2244 r = manager_serialize(m, f, fds, false);
2250 if (fseeko(f, 0, SEEK_SET) < 0) {
2256 /* From here on there is no way back. */
2257 manager_clear_jobs_and_units(m);
2258 manager_undo_generators(m);
2259 lookup_paths_free(&m->lookup_paths);
2261 /* Find new unit paths */
2262 manager_run_generators(m);
2264 q = lookup_paths_init(
2265 &m->lookup_paths, m->running_as, true,
2266 m->generator_unit_path,
2267 m->generator_unit_path_early,
2268 m->generator_unit_path_late);
2272 manager_build_unit_path_cache(m);
2274 /* First, enumerate what we can from all config files */
2275 q = manager_enumerate(m);
2279 /* Second, deserialize our stored data */
2280 q = manager_deserialize(m, f, fds);
2287 /* Third, fire things up! */
2288 q = manager_coldplug(m);
2292 assert(m->n_reloading > 0);
2305 static bool manager_is_booting_or_shutting_down(Manager *m) {
2310 /* Is the initial job still around? */
2311 if (manager_get_job(m, m->default_unit_job_id))
2314 /* Is there a job for the shutdown target? */
2315 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2322 bool manager_is_reloading_or_reexecuting(Manager *m) {
2325 return m->n_reloading != 0;
2328 void manager_reset_failed(Manager *m) {
2334 HASHMAP_FOREACH(u, m->units, i)
2335 unit_reset_failed(u);
2338 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2344 /* Returns true if the unit is inactive or going down */
2345 u = manager_get_unit(m, name);
2349 return unit_inactive_or_pending(u);
2352 void manager_check_finished(Manager *m) {
2353 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2354 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2358 if (m->n_running_jobs == 0)
2359 manager_unwatch_jobs_in_progress(m);
2361 if (hashmap_size(m->jobs) > 0) {
2362 manager_jobs_in_progress_mod_timer(m);
2366 /* Notify Type=idle units that we are done now */
2367 close_pipe(m->idle_pipe);
2369 /* Turn off confirm spawn now */
2370 m->confirm_spawn = false;
2372 if (dual_timestamp_is_set(&m->finish_timestamp))
2375 dual_timestamp_get(&m->finish_timestamp);
2377 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2379 /* Note that m->kernel_usec.monotonic is always at 0,
2380 * and m->firmware_usec.monotonic and
2381 * m->loader_usec.monotonic should be considered
2382 * negative values. */
2384 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2385 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2386 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2387 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2389 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2391 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2392 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2394 if (!log_on_console())
2395 log_struct(LOG_INFO,
2396 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2397 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2398 "INITRD_USEC=%llu", (unsigned long long) initrd_usec,
2399 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2400 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2401 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2402 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2403 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2404 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2407 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2410 if (!log_on_console())
2411 log_struct(LOG_INFO,
2412 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2413 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2414 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2415 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2416 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2417 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2418 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2422 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2423 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2425 if (!log_on_console())
2426 log_struct(LOG_INFO,
2427 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2428 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2429 "MESSAGE=Startup finished in %s.",
2430 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2434 bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2437 "READY=1\nSTATUS=Startup finished in %s.",
2438 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2441 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2452 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2454 p = strappend("/run/systemd/", name);
2458 r = mkdir_p_label(p, 0755);
2460 log_error("Failed to create generator directory %s: %s",
2466 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2471 log_error("Failed to create generator directory %s: %m",
2482 static void trim_generator_dir(Manager *m, char **generator) {
2489 if (rmdir(*generator) >= 0) {
2497 void manager_run_generators(Manager *m) {
2499 const char *generator_path;
2500 const char *argv[5];
2505 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2506 d = opendir(generator_path);
2508 if (errno == ENOENT)
2511 log_error("Failed to enumerate generator directory %s: %m",
2516 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2520 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2524 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2528 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2529 argv[1] = m->generator_unit_path;
2530 argv[2] = m->generator_unit_path_early;
2531 argv[3] = m->generator_unit_path_late;
2534 RUN_WITH_UMASK(0022) {
2535 execute_directory(generator_path, d, (char**) argv);
2538 trim_generator_dir(m, &m->generator_unit_path);
2539 trim_generator_dir(m, &m->generator_unit_path_early);
2540 trim_generator_dir(m, &m->generator_unit_path_late);
2547 static void remove_generator_dir(Manager *m, char **generator) {
2554 strv_remove(m->lookup_paths.unit_path, *generator);
2555 rm_rf(*generator, false, true, false);
2561 void manager_undo_generators(Manager *m) {
2564 remove_generator_dir(m, &m->generator_unit_path);
2565 remove_generator_dir(m, &m->generator_unit_path_early);
2566 remove_generator_dir(m, &m->generator_unit_path_late);
2569 int manager_set_default_controllers(Manager *m, char **controllers) {
2574 l = strv_copy(controllers);
2578 strv_free(m->default_controllers);
2579 m->default_controllers = l;
2581 cg_shorten_controllers(m->default_controllers);
2586 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2591 for (i = 0; i < RLIMIT_NLIMITS; i++) {
2592 if (!default_rlimit[i])
2595 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2603 void manager_recheck_journal(Manager *m) {
2608 if (m->running_as != SYSTEMD_SYSTEM)
2611 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2612 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2613 log_close_journal();
2617 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2618 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2619 log_close_journal();
2623 /* Hmm, OK, so the socket is fully up and the service is up
2624 * too, then let's make use of the thing. */
2628 void manager_set_show_status(Manager *m, bool b) {
2631 if (m->running_as != SYSTEMD_SYSTEM)
2637 touch("/run/systemd/show-status");
2639 unlink("/run/systemd/show-status");
2642 static bool manager_get_show_status(Manager *m) {
2645 if (m->running_as != SYSTEMD_SYSTEM)
2651 /* If Plymouth is running make sure we show the status, so
2652 * that there's something nice to see when people press Esc */
2654 return plymouth_running();
2657 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
2660 if (!manager_get_show_status(m))
2663 /* XXX We should totally drop the check for ephemeral here
2664 * and thus effectively make 'Type=idle' pointless. */
2665 if (ephemeral && m->n_on_console > 0)
2668 if (!manager_is_booting_or_shutting_down(m))
2671 va_start(ap, format);
2672 status_vprintf(status, true, ephemeral, format, ap);
2676 void watch_init(Watch *w) {
2679 w->type = WATCH_INVALID;