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"
58 #include "mount-setup.h"
59 #include "unit-name.h"
60 #include "dbus-unit.h"
63 #include "path-lookup.h"
65 #include "bus-errors.h"
66 #include "exit-status.h"
69 #include "cgroup-util.h"
70 #include "path-util.h"
75 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
76 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
78 /* Initial delay and the interval for printing status messages about running jobs */
79 #define JOBS_IN_PROGRESS_WAIT_SEC 5
80 #define JOBS_IN_PROGRESS_PERIOD_SEC 1
81 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
83 /* Where clients shall send notification messages to */
84 #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify"
86 #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
88 static int manager_setup_notify(Manager *m) {
91 struct sockaddr_un un;
93 .sa.sa_family = AF_UNIX,
95 struct epoll_event ev = {
97 .data.ptr = &m->notify_watch,
101 m->notify_watch.type = WATCH_NOTIFY;
102 m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
103 if (m->notify_watch.fd < 0) {
104 log_error("Failed to allocate notification socket: %m");
108 if (getpid() != 1 || detect_container(NULL) > 0)
109 snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull());
111 strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path));
113 sa.un.sun_path[0] = 0;
115 r = bind(m->notify_watch.fd, &sa.sa,
116 offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1));
118 log_error("bind() failed: %m");
122 r = setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
124 log_error("SO_PASSCRED failed: %m");
128 r = epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev);
130 log_error("Failed to add notification socket fd to epoll: %m");
134 sa.un.sun_path[0] = '@';
135 m->notify_socket = strdup(sa.un.sun_path);
136 if (!m->notify_socket)
139 log_debug("Using notification socket %s", m->notify_socket);
144 static int manager_jobs_in_progress_mod_timer(Manager *m) {
145 struct itimerspec its = {
146 .it_value.tv_sec = JOBS_IN_PROGRESS_WAIT_SEC,
147 .it_interval.tv_sec = JOBS_IN_PROGRESS_PERIOD_SEC,
150 if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS)
153 if (timerfd_settime(m->jobs_in_progress_watch.fd, 0, &its, NULL) < 0)
159 static int manager_watch_jobs_in_progress(Manager *m) {
160 struct epoll_event ev = {
162 .data.ptr = &m->jobs_in_progress_watch,
166 if (m->jobs_in_progress_watch.type != WATCH_INVALID)
169 m->jobs_in_progress_watch.type = WATCH_JOBS_IN_PROGRESS;
170 m->jobs_in_progress_watch.fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
171 if (m->jobs_in_progress_watch.fd < 0) {
172 log_error("Failed to create timerfd: %m");
177 r = manager_jobs_in_progress_mod_timer(m);
179 log_error("Failed to set up timer for jobs progress watch: %s", strerror(-r));
183 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->jobs_in_progress_watch.fd, &ev) < 0) {
184 log_error("Failed to add jobs progress timer fd to epoll: %m");
189 log_debug("Set up jobs progress timerfd.");
194 if (m->jobs_in_progress_watch.fd >= 0)
195 close_nointr_nofail(m->jobs_in_progress_watch.fd);
196 watch_init(&m->jobs_in_progress_watch);
200 static void manager_unwatch_jobs_in_progress(Manager *m) {
201 if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS)
204 assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->jobs_in_progress_watch.fd, NULL) >= 0);
205 close_nointr_nofail(m->jobs_in_progress_watch.fd);
206 watch_init(&m->jobs_in_progress_watch);
207 m->jobs_in_progress_iteration = 0;
209 log_debug("Closed jobs progress timerfd.");
212 #define CYLON_BUFFER_EXTRA (2*strlen(ANSI_RED_ON) + strlen(ANSI_HIGHLIGHT_RED_ON) + 2*strlen(ANSI_HIGHLIGHT_OFF))
213 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
216 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
217 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
221 p = mempset(p, ' ', pos-2);
222 p = stpcpy(p, ANSI_RED_ON);
226 if (pos > 0 && pos <= width) {
227 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
231 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
234 p = stpcpy(p, ANSI_RED_ON);
237 p = mempset(p, ' ', width-1-pos);
238 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
242 static void manager_print_jobs_in_progress(Manager *m) {
245 char *job_of_n = NULL;
246 unsigned counter = 0, print_nr;
247 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
250 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
252 HASHMAP_FOREACH(j, m->jobs, i)
253 if (j->state == JOB_RUNNING && counter++ == print_nr)
256 /* m->n_running_jobs must be consistent with the contents of m->jobs,
257 * so the above loop must have succeeded in finding j. */
258 assert(counter == print_nr + 1);
260 cylon_pos = m->jobs_in_progress_iteration % 14;
262 cylon_pos = 14 - cylon_pos;
263 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
265 if (m->n_running_jobs > 1)
266 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
269 manager_status_printf(m, true, cylon, "%sA %s job is running for %s",
270 strempty(job_of_n), job_type_to_string(j->type), unit_description(j->unit));
273 m->jobs_in_progress_iteration++;
276 static int manager_setup_time_change(Manager *m) {
277 struct epoll_event ev = {
279 .data.ptr = &m->time_change_watch,
282 /* We only care for the cancellation event, hence we set the
283 * timeout to the latest possible value. */
284 struct itimerspec its = {
285 .it_value.tv_sec = TIME_T_MAX,
287 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
289 assert(m->time_change_watch.type == WATCH_INVALID);
291 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
292 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
294 m->time_change_watch.type = WATCH_TIME_CHANGE;
295 m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
296 if (m->time_change_watch.fd < 0) {
297 log_error("Failed to create timerfd: %m");
301 if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
302 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
303 close_nointr_nofail(m->time_change_watch.fd);
304 watch_init(&m->time_change_watch);
308 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) {
309 log_error("Failed to add timer change fd to epoll: %m");
313 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
318 static int enable_special_signals(Manager *m) {
323 /* Enable that we get SIGINT on control-alt-del. In containers
324 * this will fail with EPERM (older) or EINVAL (newer), so
326 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
327 log_warning("Failed to enable ctrl-alt-del handling: %m");
329 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
331 /* Support systems without virtual console */
333 log_warning("Failed to open /dev/tty0: %m");
335 /* Enable that we get SIGWINCH on kbrequest */
336 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
337 log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
339 close_nointr_nofail(fd);
345 static int manager_setup_signals(Manager *m) {
347 struct epoll_event ev = {
349 .data.ptr = &m->signal_watch,
351 struct sigaction sa = {
352 .sa_handler = SIG_DFL,
353 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
358 /* We are not interested in SIGSTOP and friends. */
359 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
361 assert_se(sigemptyset(&mask) == 0);
363 sigset_add_many(&mask,
364 SIGCHLD, /* Child died */
365 SIGTERM, /* Reexecute daemon */
366 SIGHUP, /* Reload configuration */
367 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
368 SIGUSR2, /* systemd: dump status */
369 SIGINT, /* Kernel sends us this on control-alt-del */
370 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
371 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
372 SIGRTMIN+0, /* systemd: start default.target */
373 SIGRTMIN+1, /* systemd: isolate rescue.target */
374 SIGRTMIN+2, /* systemd: isolate emergency.target */
375 SIGRTMIN+3, /* systemd: start halt.target */
376 SIGRTMIN+4, /* systemd: start poweroff.target */
377 SIGRTMIN+5, /* systemd: start reboot.target */
378 SIGRTMIN+6, /* systemd: start kexec.target */
379 SIGRTMIN+13, /* systemd: Immediate halt */
380 SIGRTMIN+14, /* systemd: Immediate poweroff */
381 SIGRTMIN+15, /* systemd: Immediate reboot */
382 SIGRTMIN+16, /* systemd: Immediate kexec */
383 SIGRTMIN+20, /* systemd: enable status messages */
384 SIGRTMIN+21, /* systemd: disable status messages */
385 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
386 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
387 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
388 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
389 SIGRTMIN+27, /* systemd: set log target to console */
390 SIGRTMIN+28, /* systemd: set log target to kmsg */
391 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */
393 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
395 m->signal_watch.type = WATCH_SIGNAL;
396 m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
397 if (m->signal_watch.fd < 0)
400 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
403 if (m->running_as == SYSTEMD_SYSTEM)
404 return enable_special_signals(m);
409 static void manager_strip_environment(Manager *m) {
412 /* Remove variables from the inherited set that are part of
413 * the container interface:
414 * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
415 strv_remove_prefix(m->environment, "container=");
416 strv_remove_prefix(m->environment, "container_");
418 /* Remove variables from the inherited set that are part of
419 * the initrd interface:
420 * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
421 strv_remove_prefix(m->environment, "RD_");
423 /* Drop invalid entries */
424 strv_env_clean(m->environment);
427 int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **_m) {
432 assert(running_as >= 0);
433 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
435 m = new0(Manager, 1);
440 if (detect_container(NULL) <= 0)
441 efi_get_boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
444 m->running_as = running_as;
445 m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
446 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
447 m->pin_cgroupfs_fd = -1;
448 m->idle_pipe[0] = m->idle_pipe[1] = -1;
450 watch_init(&m->signal_watch);
451 watch_init(&m->mount_watch);
452 watch_init(&m->swap_watch);
453 watch_init(&m->udev_watch);
454 watch_init(&m->time_change_watch);
455 watch_init(&m->jobs_in_progress_watch);
457 m->epoll_fd = m->dev_autofs_fd = -1;
458 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
460 m->environment = strv_copy(environ);
464 manager_strip_environment(m);
466 if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
469 if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
472 if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
475 m->cgroup_unit = hashmap_new(string_hash_func, string_compare_func);
479 m->watch_bus = hashmap_new(string_hash_func, string_compare_func);
483 m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
487 r = manager_setup_signals(m);
491 r = manager_setup_cgroup(m);
495 r = manager_setup_notify(m);
499 r = manager_setup_time_change(m);
503 /* Try to connect to the busses, if possible. */
504 if ((running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS")) ||
505 running_as == SYSTEMD_SYSTEM) {
506 r = bus_init(m, reexecuting || running_as != SYSTEMD_SYSTEM);
510 log_debug("Skipping DBus session bus connection attempt - no DBUS_SESSION_BUS_ADDRESS set...");
512 m->taint_usr = dir_is_empty("/usr") > 0;
522 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
528 while ((u = m->cleanup_queue)) {
529 assert(u->in_cleanup_queue);
539 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
540 GC_OFFSET_UNSURE, /* No clue */
541 GC_OFFSET_GOOD, /* We still need this unit */
542 GC_OFFSET_BAD, /* We don't need this unit anymore */
546 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
553 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
554 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
555 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
558 if (u->in_cleanup_queue)
561 if (unit_check_gc(u))
564 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
568 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
569 unit_gc_sweep(other, gc_marker);
571 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
574 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
581 /* We were unable to find anything out about this entry, so
582 * let's investigate it later */
583 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
584 unit_add_to_gc_queue(u);
588 /* We definitely know that this one is not useful anymore, so
589 * let's mark it for deletion */
590 u->gc_marker = gc_marker + GC_OFFSET_BAD;
591 unit_add_to_cleanup_queue(u);
595 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
598 static unsigned manager_dispatch_gc_queue(Manager *m) {
605 /* log_debug("Running GC..."); */
607 m->gc_marker += _GC_OFFSET_MAX;
608 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
611 gc_marker = m->gc_marker;
613 while ((u = m->gc_queue)) {
614 assert(u->in_gc_queue);
616 unit_gc_sweep(u, gc_marker);
618 LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
619 u->in_gc_queue = false;
623 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
624 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
625 log_debug_unit(u->id, "Collecting %s", u->id);
626 u->gc_marker = gc_marker + GC_OFFSET_BAD;
627 unit_add_to_cleanup_queue(u);
631 m->n_in_gc_queue = 0;
636 static void manager_clear_jobs_and_units(Manager *m) {
641 while ((u = hashmap_first(m->units)))
644 manager_dispatch_cleanup_queue(m);
646 assert(!m->load_queue);
647 assert(!m->run_queue);
648 assert(!m->dbus_unit_queue);
649 assert(!m->dbus_job_queue);
650 assert(!m->cleanup_queue);
651 assert(!m->gc_queue);
653 assert(hashmap_isempty(m->jobs));
654 assert(hashmap_isempty(m->units));
657 m->n_running_jobs = 0;
660 void manager_free(Manager *m) {
666 manager_clear_jobs_and_units(m);
668 for (c = 0; c < _UNIT_TYPE_MAX; c++)
669 if (unit_vtable[c]->shutdown)
670 unit_vtable[c]->shutdown(m);
672 /* If we reexecute ourselves, we keep the root cgroup
674 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
676 manager_undo_generators(m);
680 hashmap_free(m->units);
681 hashmap_free(m->jobs);
682 hashmap_free(m->watch_pids);
683 hashmap_free(m->watch_bus);
685 if (m->epoll_fd >= 0)
686 close_nointr_nofail(m->epoll_fd);
687 if (m->signal_watch.fd >= 0)
688 close_nointr_nofail(m->signal_watch.fd);
689 if (m->notify_watch.fd >= 0)
690 close_nointr_nofail(m->notify_watch.fd);
691 if (m->time_change_watch.fd >= 0)
692 close_nointr_nofail(m->time_change_watch.fd);
693 if (m->jobs_in_progress_watch.fd >= 0)
694 close_nointr_nofail(m->jobs_in_progress_watch.fd);
696 free(m->notify_socket);
698 lookup_paths_free(&m->lookup_paths);
699 strv_free(m->environment);
701 hashmap_free(m->cgroup_unit);
702 set_free_free(m->unit_path_cache);
704 close_pipe(m->idle_pipe);
706 free(m->switch_root);
707 free(m->switch_root_init);
709 for (i = 0; i < RLIMIT_NLIMITS; i++)
715 int manager_enumerate(Manager *m) {
721 /* Let's ask every type to load all units from disk/kernel
722 * that it might know */
723 for (c = 0; c < _UNIT_TYPE_MAX; c++)
724 if (unit_vtable[c]->enumerate)
725 if ((q = unit_vtable[c]->enumerate(m)) < 0)
728 manager_dispatch_load_queue(m);
732 int manager_coldplug(Manager *m) {
740 /* Then, let's set up their initial state. */
741 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
747 if ((q = unit_coldplug(u)) < 0)
754 static void manager_build_unit_path_cache(Manager *m) {
756 _cleanup_free_ DIR *d = NULL;
761 set_free_free(m->unit_path_cache);
763 m->unit_path_cache = set_new(string_hash_func, string_compare_func);
764 if (!m->unit_path_cache) {
765 log_error("Failed to allocate unit path cache.");
769 /* This simply builds a list of files we know exist, so that
770 * we don't always have to go to disk */
772 STRV_FOREACH(i, m->lookup_paths.unit_path) {
778 log_error("Failed to open directory %s: %m", *i);
782 while ((de = readdir(d))) {
785 if (ignore_file(de->d_name))
788 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
794 r = set_consume(m->unit_path_cache, p);
806 log_error("Failed to build unit path cache: %s", strerror(-r));
808 set_free_free(m->unit_path_cache);
809 m->unit_path_cache = NULL;
812 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
817 dual_timestamp_get(&m->generators_start_timestamp);
818 manager_run_generators(m);
819 dual_timestamp_get(&m->generators_finish_timestamp);
821 r = lookup_paths_init(
822 &m->lookup_paths, m->running_as, true,
823 m->generator_unit_path,
824 m->generator_unit_path_early,
825 m->generator_unit_path_late);
829 manager_build_unit_path_cache(m);
831 /* If we will deserialize make sure that during enumeration
832 * this is already known, so we increase the counter here
837 /* First, enumerate what we can from all config files */
838 dual_timestamp_get(&m->unitsload_start_timestamp);
839 r = manager_enumerate(m);
840 dual_timestamp_get(&m->unitsload_finish_timestamp);
842 /* Second, deserialize if there is something to deserialize */
844 q = manager_deserialize(m, serialization, fds);
849 /* Any fds left? Find some unit which wants them. This is
850 * useful to allow container managers to pass some file
851 * descriptors to us pre-initialized. This enables
852 * socket-based activation of entire containers. */
853 if (fdset_size(fds) > 0) {
854 q = manager_distribute_fds(m, fds);
859 /* Third, fire things up! */
860 q = manager_coldplug(m);
865 assert(m->n_reloading > 0);
872 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
877 assert(type < _JOB_TYPE_MAX);
879 assert(mode < _JOB_MODE_MAX);
881 if (mode == JOB_ISOLATE && type != JOB_START) {
882 dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
886 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
887 dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
891 log_debug_unit(unit->id,
892 "Trying to enqueue job %s/%s/%s", unit->id,
893 job_type_to_string(type), job_mode_to_string(mode));
895 job_type_collapse(&type, unit);
897 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
901 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
902 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
903 mode == JOB_IGNORE_DEPENDENCIES, e);
907 if (mode == JOB_ISOLATE) {
908 r = transaction_add_isolate_jobs(tr, m);
913 r = transaction_activate(tr, m, mode, e);
917 log_debug_unit(unit->id,
918 "Enqueued job %s/%s as %u", unit->id,
919 job_type_to_string(type), (unsigned) tr->anchor_job->id);
922 *_ret = tr->anchor_job;
924 transaction_free(tr);
928 transaction_abort(tr);
929 transaction_free(tr);
933 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
938 assert(type < _JOB_TYPE_MAX);
940 assert(mode < _JOB_MODE_MAX);
942 r = manager_load_unit(m, name, NULL, NULL, &unit);
946 return manager_add_job(m, type, unit, mode, override, e, _ret);
949 Job *manager_get_job(Manager *m, uint32_t id) {
952 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
955 Unit *manager_get_unit(Manager *m, const char *name) {
959 return hashmap_get(m->units, name);
962 unsigned manager_dispatch_load_queue(Manager *m) {
968 /* Make sure we are not run recursively */
969 if (m->dispatching_load_queue)
972 m->dispatching_load_queue = true;
974 /* Dispatches the load queue. Takes a unit from the queue and
975 * tries to load its data until the queue is empty */
977 while ((u = m->load_queue)) {
978 assert(u->in_load_queue);
984 m->dispatching_load_queue = false;
988 int manager_load_unit_prepare(
1000 assert(name || path);
1002 /* This will prepare the unit for loading, but not actually
1003 * load anything from disk. */
1005 if (path && !is_path(path)) {
1006 dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
1011 name = path_get_file_name(path);
1013 t = unit_name_to_type(name);
1015 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) {
1016 dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
1020 ret = manager_get_unit(m, name);
1026 ret = unit_new(m, unit_vtable[t]->object_size);
1031 ret->fragment_path = strdup(path);
1032 if (!ret->fragment_path) {
1038 r = unit_add_name(ret, name);
1044 unit_add_to_load_queue(ret);
1045 unit_add_to_dbus_queue(ret);
1046 unit_add_to_gc_queue(ret);
1054 int manager_load_unit(
1065 /* This will load the service information files, but not actually
1066 * start any services or anything. */
1068 r = manager_load_unit_prepare(m, name, path, e, _ret);
1072 manager_dispatch_load_queue(m);
1075 *_ret = unit_follow_merge(*_ret);
1080 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1087 HASHMAP_FOREACH(j, s->jobs, i)
1088 job_dump(j, f, prefix);
1091 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1099 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1101 unit_dump(u, f, prefix);
1104 void manager_clear_jobs(Manager *m) {
1109 while ((j = hashmap_first(m->jobs)))
1110 /* No need to recurse. We're cancelling all jobs. */
1111 job_finish_and_invalidate(j, JOB_CANCELED, false);
1114 unsigned manager_dispatch_run_queue(Manager *m) {
1118 if (m->dispatching_run_queue)
1121 m->dispatching_run_queue = true;
1123 while ((j = m->run_queue)) {
1124 assert(j->installed);
1125 assert(j->in_run_queue);
1127 job_run_and_invalidate(j);
1131 m->dispatching_run_queue = false;
1133 if (m->n_running_jobs > 0)
1134 manager_watch_jobs_in_progress(m);
1139 unsigned manager_dispatch_dbus_queue(Manager *m) {
1146 if (m->dispatching_dbus_queue)
1149 m->dispatching_dbus_queue = true;
1151 while ((u = m->dbus_unit_queue)) {
1152 assert(u->in_dbus_queue);
1154 bus_unit_send_change_signal(u);
1158 while ((j = m->dbus_job_queue)) {
1159 assert(j->in_dbus_queue);
1161 bus_job_send_change_signal(j);
1165 m->dispatching_dbus_queue = false;
1169 static int manager_process_notify_fd(Manager *m) {
1176 struct iovec iovec = {
1178 .iov_len = sizeof(buf)-1,
1182 struct cmsghdr cmsghdr;
1183 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1186 struct msghdr msghdr = {
1189 .msg_control = &control,
1190 .msg_controllen = sizeof(control),
1192 struct ucred *ucred;
1194 _cleanup_strv_free_ char **tags = NULL;
1196 n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT);
1201 if (errno == EAGAIN || errno == EINTR)
1207 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1208 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1209 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1210 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1211 log_warning("Received notify message without credentials. Ignoring.");
1215 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1217 u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
1219 u = manager_get_unit_by_pid(m, ucred->pid);
1221 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
1226 assert((size_t) n < sizeof(buf));
1228 tags = strv_split(buf, "\n\r");
1232 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1234 if (UNIT_VTABLE(u)->notify_message)
1235 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
1241 static int manager_dispatch_sigchld(Manager *m) {
1249 /* First we call waitd() for a PID and do not reap the
1250 * zombie. That way we can still access /proc/$PID for
1251 * it while it is a zombie. */
1252 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1254 if (errno == ECHILD)
1266 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1267 _cleanup_free_ char *name = NULL;
1269 get_process_comm(si.si_pid, &name);
1270 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
1273 /* Let's flush any message the dying child might still
1274 * have queued for us. This ensures that the process
1275 * still exists in /proc so that we can figure out
1276 * which cgroup and hence unit it belongs to. */
1277 r = manager_process_notify_fd(m);
1281 /* And now figure out the unit this belongs to */
1282 u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
1284 u = manager_get_unit_by_pid(m, si.si_pid);
1286 /* And now, we actually reap the zombie. */
1287 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1294 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1297 log_debug("Child %lu died (code=%s, status=%i/%s)",
1298 (long unsigned) si.si_pid,
1299 sigchld_code_to_string(si.si_code),
1301 strna(si.si_code == CLD_EXITED
1302 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1303 : signal_to_string(si.si_status)));
1308 log_debug_unit(u->id,
1309 "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
1311 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
1312 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1318 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1322 dbus_error_init(&error);
1324 log_debug_unit(name, "Activating special unit %s", name);
1326 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1328 log_error_unit(name,
1329 "Failed to enqueue %s job: %s", name, bus_error(&error, r));
1331 dbus_error_free(&error);
1336 static int manager_process_signal_fd(Manager *m) {
1338 struct signalfd_siginfo sfsi;
1339 bool sigchld = false;
1344 n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi));
1345 if (n != sizeof(sfsi)) {
1350 if (errno == EINTR || errno == EAGAIN)
1356 if (sfsi.ssi_pid > 0) {
1359 get_process_comm(sfsi.ssi_pid, &p);
1361 log_debug("Received SIG%s from PID %lu (%s).",
1362 signal_to_string(sfsi.ssi_signo),
1363 (unsigned long) sfsi.ssi_pid, strna(p));
1366 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
1368 switch (sfsi.ssi_signo) {
1375 if (m->running_as == SYSTEMD_SYSTEM) {
1376 /* This is for compatibility with the
1377 * original sysvinit */
1378 m->exit_code = MANAGER_REEXECUTE;
1385 if (m->running_as == SYSTEMD_SYSTEM) {
1386 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1390 /* Run the exit target if there is one, if not, just exit. */
1391 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1392 m->exit_code = MANAGER_EXIT;
1399 if (m->running_as == SYSTEMD_SYSTEM)
1400 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1402 /* This is a nop on non-init */
1406 if (m->running_as == SYSTEMD_SYSTEM)
1407 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1409 /* This is a nop on non-init */
1415 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1417 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1418 log_info("Trying to reconnect to bus...");
1422 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1423 log_info("Loading D-Bus service...");
1424 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1435 if (!(f = open_memstream(&dump, &size))) {
1436 log_warning("Failed to allocate memory stream.");
1440 manager_dump_units(m, f, "\t");
1441 manager_dump_jobs(m, f, "\t");
1446 log_warning("Failed to write status stream");
1451 log_dump(LOG_INFO, dump);
1458 m->exit_code = MANAGER_RELOAD;
1463 /* Starting SIGRTMIN+0 */
1464 static const char * const target_table[] = {
1465 [0] = SPECIAL_DEFAULT_TARGET,
1466 [1] = SPECIAL_RESCUE_TARGET,
1467 [2] = SPECIAL_EMERGENCY_TARGET,
1468 [3] = SPECIAL_HALT_TARGET,
1469 [4] = SPECIAL_POWEROFF_TARGET,
1470 [5] = SPECIAL_REBOOT_TARGET,
1471 [6] = SPECIAL_KEXEC_TARGET
1474 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1475 static const ManagerExitCode code_table[] = {
1477 [1] = MANAGER_POWEROFF,
1478 [2] = MANAGER_REBOOT,
1482 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1483 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1484 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1485 manager_start_target(m, target_table[idx],
1486 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1490 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1491 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1492 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1496 switch (sfsi.ssi_signo - SIGRTMIN) {
1499 log_debug("Enabling showing of status.");
1500 manager_set_show_status(m, true);
1504 log_debug("Disabling showing of status.");
1505 manager_set_show_status(m, false);
1509 log_set_max_level(LOG_DEBUG);
1510 log_notice("Setting log level to debug.");
1514 log_set_max_level(LOG_INFO);
1515 log_notice("Setting log level to info.");
1519 if (m->running_as == SYSTEMD_USER) {
1520 m->exit_code = MANAGER_EXIT;
1524 /* This is a nop on init */
1528 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1529 log_notice("Setting log target to journal-or-kmsg.");
1533 log_set_target(LOG_TARGET_CONSOLE);
1534 log_notice("Setting log target to console.");
1538 log_set_target(LOG_TARGET_KMSG);
1539 log_notice("Setting log target to kmsg.");
1543 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1544 log_notice("Setting log target to syslog-or-kmsg.");
1548 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1555 return manager_dispatch_sigchld(m);
1560 static int process_event(Manager *m, struct epoll_event *ev) {
1567 assert_se(w = ev->data.ptr);
1569 if (w->type == WATCH_INVALID)
1576 /* An incoming signal? */
1577 if (ev->events != EPOLLIN)
1580 if ((r = manager_process_signal_fd(m)) < 0)
1587 /* An incoming daemon notification event? */
1588 if (ev->events != EPOLLIN)
1591 if ((r = manager_process_notify_fd(m)) < 0)
1598 /* Some fd event, to be dispatched to the units */
1599 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
1602 case WATCH_UNIT_TIMER:
1603 case WATCH_JOB_TIMER: {
1607 /* Some timer event, to be dispatched to the units */
1608 k = read(w->fd, &v, sizeof(v));
1609 if (k != sizeof(v)) {
1611 if (k < 0 && (errno == EINTR || errno == EAGAIN))
1614 log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read");
1615 return k < 0 ? -errno : -EIO;
1618 if (w->type == WATCH_UNIT_TIMER)
1619 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
1621 job_timer_event(w->data.job, v, w);
1626 /* Some mount table change, intended for the mount subsystem */
1627 mount_fd_event(m, ev->events);
1631 /* Some swap table change, intended for the swap subsystem */
1632 swap_fd_event(m, ev->events);
1636 /* Some notification from udev, intended for the device subsystem */
1637 device_fd_event(m, ev->events);
1640 case WATCH_DBUS_WATCH:
1641 bus_watch_event(m, w, ev->events);
1644 case WATCH_DBUS_TIMEOUT:
1645 bus_timeout_event(m, w, ev->events);
1648 case WATCH_TIME_CHANGE: {
1652 log_struct(LOG_INFO,
1653 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1654 "MESSAGE=Time has been changed",
1657 /* Restart the watch */
1658 epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->time_change_watch.fd,
1660 close_nointr_nofail(m->time_change_watch.fd);
1661 watch_init(&m->time_change_watch);
1662 manager_setup_time_change(m);
1664 HASHMAP_FOREACH(u, m->units, i) {
1665 if (UNIT_VTABLE(u)->time_change)
1666 UNIT_VTABLE(u)->time_change(u);
1672 case WATCH_JOBS_IN_PROGRESS: {
1675 /* not interested in the data */
1676 read(w->fd, &v, sizeof(v));
1678 manager_print_jobs_in_progress(m);
1683 log_error("event type=%i", w->type);
1684 assert_not_reached("Unknown epoll event type.");
1690 int manager_loop(Manager *m) {
1693 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1696 m->exit_code = MANAGER_RUNNING;
1698 /* Release the path cache */
1699 set_free_free(m->unit_path_cache);
1700 m->unit_path_cache = NULL;
1702 manager_check_finished(m);
1704 /* There might still be some zombies hanging around from
1705 * before we were exec()'ed. Leat's reap them */
1706 r = manager_dispatch_sigchld(m);
1710 while (m->exit_code == MANAGER_RUNNING) {
1711 struct epoll_event event;
1715 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1718 if (!ratelimit_test(&rl)) {
1719 /* Yay, something is going seriously wrong, pause a little */
1720 log_warning("Looping too fast. Throttling execution a little.");
1725 if (manager_dispatch_load_queue(m) > 0)
1728 if (manager_dispatch_gc_queue(m) > 0)
1731 if (manager_dispatch_cleanup_queue(m) > 0)
1734 if (manager_dispatch_cgroup_queue(m) > 0)
1737 if (manager_dispatch_run_queue(m) > 0)
1740 if (bus_dispatch(m) > 0)
1743 if (manager_dispatch_dbus_queue(m) > 0)
1746 if (swap_dispatch_reload(m) > 0)
1749 /* Sleep for half the watchdog time */
1750 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1751 wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
1757 n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
1769 r = process_event(m, &event);
1774 return m->exit_code;
1777 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) {
1778 _cleanup_free_ char *n = NULL;
1786 r = unit_name_from_dbus_path(s, &n);
1790 r = manager_load_unit(m, n, NULL, e, &u);
1799 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1808 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
1811 r = safe_atou(s + 30, &id);
1815 j = manager_get_job(m, id);
1824 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
1830 audit_fd = get_audit_fd();
1834 /* Don't generate audit events if the service was already
1835 * started and we're just deserializing */
1836 if (m->n_reloading > 0)
1839 if (m->running_as != SYSTEMD_SYSTEM)
1842 if (u->type != UNIT_SERVICE)
1845 p = unit_name_to_prefix_and_instance(u->id);
1847 log_error_unit(u->id,
1848 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
1852 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
1853 if (errno == EPERM) {
1854 /* We aren't allowed to send audit messages?
1855 * Then let's not retry again. */
1858 log_warning("Failed to send audit message: %m");
1866 void manager_send_unit_plymouth(Manager *m, Unit *u) {
1868 union sockaddr_union sa;
1870 char *message = NULL;
1872 /* Don't generate plymouth events if the service was already
1873 * started and we're just deserializing */
1874 if (m->n_reloading > 0)
1877 if (m->running_as != SYSTEMD_SYSTEM)
1880 if (u->type != UNIT_SERVICE &&
1881 u->type != UNIT_MOUNT &&
1882 u->type != UNIT_SWAP)
1885 /* We set SOCK_NONBLOCK here so that we rather drop the
1886 * message then wait for plymouth */
1887 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
1889 log_error("socket() failed: %m");
1894 sa.sa.sa_family = AF_UNIX;
1895 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
1896 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
1898 if (errno != EPIPE &&
1901 errno != ECONNREFUSED &&
1902 errno != ECONNRESET &&
1903 errno != ECONNABORTED)
1904 log_error("connect() failed: %m");
1909 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
1915 if (write(fd, message, n + 1) != n + 1) {
1917 if (errno != EPIPE &&
1920 errno != ECONNREFUSED &&
1921 errno != ECONNRESET &&
1922 errno != ECONNABORTED)
1923 log_error("Failed to write Plymouth message: %m");
1930 close_nointr_nofail(fd);
1935 void manager_dispatch_bus_name_owner_changed(
1938 const char* old_owner,
1939 const char *new_owner) {
1946 if (!(u = hashmap_get(m->watch_bus, name)))
1949 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
1952 void manager_dispatch_bus_query_pid_done(
1963 if (!(u = hashmap_get(m->watch_bus, name)))
1966 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
1969 int manager_open_serialization(Manager *m, FILE **_f) {
1976 if (m->running_as == SYSTEMD_SYSTEM)
1977 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
1979 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
1984 RUN_WITH_UMASK(0077) {
1985 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
1995 log_debug("Serializing state to %s", path);
1998 f = fdopen(fd, "w+");
2007 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2020 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2021 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2022 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2023 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2025 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2026 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2027 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2028 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2031 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2032 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2035 if (!switching_root) {
2036 STRV_FOREACH(e, m->environment) {
2037 _cleanup_free_ char *ce;
2041 fprintf(f, "env=%s\n", *e);
2045 bus_serialize(m, f);
2049 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2053 if (!unit_can_serialize(u))
2060 r = unit_serialize(u, f, fds, !switching_root);
2067 assert(m->n_reloading > 0);
2073 r = bus_fdset_add_all(m, fds);
2080 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2086 log_debug("Deserializing state...");
2091 char line[LINE_MAX], *l;
2093 if (!fgets(line, sizeof(line), f)) {
2108 if (startswith(l, "current-job-id=")) {
2111 if (safe_atou32(l+15, &id) < 0)
2112 log_debug("Failed to parse current job id value %s", l+15);
2114 m->current_job_id = MAX(m->current_job_id, id);
2115 } else if (startswith(l, "n-installed-jobs=")) {
2118 if (safe_atou32(l+17, &n) < 0)
2119 log_debug("Failed to parse installed jobs counter %s", l+17);
2121 m->n_installed_jobs += n;
2122 } else if (startswith(l, "n-failed-jobs=")) {
2125 if (safe_atou32(l+14, &n) < 0)
2126 log_debug("Failed to parse failed jobs counter %s", l+14);
2128 m->n_failed_jobs += n;
2129 } else if (startswith(l, "taint-usr=")) {
2132 if ((b = parse_boolean(l+10)) < 0)
2133 log_debug("Failed to parse taint /usr flag %s", l+10);
2135 m->taint_usr = m->taint_usr || b;
2136 } else if (startswith(l, "firmware-timestamp="))
2137 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2138 else if (startswith(l, "loader-timestamp="))
2139 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2140 else if (startswith(l, "kernel-timestamp="))
2141 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2142 else if (startswith(l, "initrd-timestamp="))
2143 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2144 else if (startswith(l, "userspace-timestamp="))
2145 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2146 else if (startswith(l, "finish-timestamp="))
2147 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2148 else if (startswith(l, "env=")) {
2149 _cleanup_free_ char *uce = NULL;
2152 uce = cunescape(l+4);
2158 e = strv_env_set(m->environment, uce);
2164 strv_free(m->environment);
2166 } else if (bus_deserialize_item(m, l) == 0)
2167 log_debug("Unknown serialization item '%s'", l);
2172 char name[UNIT_NAME_MAX+2];
2175 if (!fgets(name, sizeof(name), f)) {
2186 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2190 r = unit_deserialize(u, f, fds);
2201 assert(m->n_reloading > 0);
2207 int manager_distribute_fds(Manager *m, FDSet *fds) {
2214 HASHMAP_FOREACH(u, m->units, i) {
2216 if (fdset_size(fds) <= 0)
2219 if (UNIT_VTABLE(u)->distribute_fds) {
2220 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
2229 int manager_reload(Manager *m) {
2236 r = manager_open_serialization(m, &f);
2249 r = manager_serialize(m, f, fds, false);
2255 if (fseeko(f, 0, SEEK_SET) < 0) {
2261 /* From here on there is no way back. */
2262 manager_clear_jobs_and_units(m);
2263 manager_undo_generators(m);
2264 lookup_paths_free(&m->lookup_paths);
2266 /* Find new unit paths */
2267 manager_run_generators(m);
2269 q = lookup_paths_init(
2270 &m->lookup_paths, m->running_as, true,
2271 m->generator_unit_path,
2272 m->generator_unit_path_early,
2273 m->generator_unit_path_late);
2277 manager_build_unit_path_cache(m);
2279 /* First, enumerate what we can from all config files */
2280 q = manager_enumerate(m);
2284 /* Second, deserialize our stored data */
2285 q = manager_deserialize(m, f, fds);
2292 /* Third, fire things up! */
2293 q = manager_coldplug(m);
2297 assert(m->n_reloading > 0);
2310 static bool manager_is_booting_or_shutting_down(Manager *m) {
2315 /* Is the initial job still around? */
2316 if (manager_get_job(m, m->default_unit_job_id))
2319 /* Is there a job for the shutdown target? */
2320 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2327 bool manager_is_reloading_or_reexecuting(Manager *m) {
2330 return m->n_reloading != 0;
2333 void manager_reset_failed(Manager *m) {
2339 HASHMAP_FOREACH(u, m->units, i)
2340 unit_reset_failed(u);
2343 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2349 /* Returns true if the unit is inactive or going down */
2350 u = manager_get_unit(m, name);
2354 return unit_inactive_or_pending(u);
2357 void manager_check_finished(Manager *m) {
2358 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2359 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2363 if (m->n_running_jobs == 0)
2364 manager_unwatch_jobs_in_progress(m);
2366 if (hashmap_size(m->jobs) > 0) {
2367 manager_jobs_in_progress_mod_timer(m);
2371 /* Notify Type=idle units that we are done now */
2372 close_pipe(m->idle_pipe);
2374 /* Turn off confirm spawn now */
2375 m->confirm_spawn = false;
2377 if (dual_timestamp_is_set(&m->finish_timestamp))
2380 dual_timestamp_get(&m->finish_timestamp);
2382 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2384 /* Note that m->kernel_usec.monotonic is always at 0,
2385 * and m->firmware_usec.monotonic and
2386 * m->loader_usec.monotonic should be considered
2387 * negative values. */
2389 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2390 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2391 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2392 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2394 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2396 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2397 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2399 if (!log_on_console())
2400 log_struct(LOG_INFO,
2401 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2402 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2403 "INITRD_USEC=%llu", (unsigned long long) initrd_usec,
2404 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2405 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2406 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2407 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2408 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2409 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2412 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2415 if (!log_on_console())
2416 log_struct(LOG_INFO,
2417 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2418 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2419 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2420 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2421 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2422 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2423 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2427 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2428 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2430 if (!log_on_console())
2431 log_struct(LOG_INFO,
2432 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2433 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2434 "MESSAGE=Startup finished in %s.",
2435 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2439 bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2442 "READY=1\nSTATUS=Startup finished in %s.",
2443 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2446 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2457 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2459 p = strappend("/run/systemd/", name);
2463 r = mkdir_p_label(p, 0755);
2465 log_error("Failed to create generator directory %s: %s",
2471 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2476 log_error("Failed to create generator directory %s: %m",
2487 static void trim_generator_dir(Manager *m, char **generator) {
2494 if (rmdir(*generator) >= 0) {
2502 void manager_run_generators(Manager *m) {
2504 const char *generator_path;
2505 const char *argv[5];
2510 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2511 d = opendir(generator_path);
2513 if (errno == ENOENT)
2516 log_error("Failed to enumerate generator directory %s: %m",
2521 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2525 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2529 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2533 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2534 argv[1] = m->generator_unit_path;
2535 argv[2] = m->generator_unit_path_early;
2536 argv[3] = m->generator_unit_path_late;
2539 RUN_WITH_UMASK(0022) {
2540 execute_directory(generator_path, d, (char**) argv);
2543 trim_generator_dir(m, &m->generator_unit_path);
2544 trim_generator_dir(m, &m->generator_unit_path_early);
2545 trim_generator_dir(m, &m->generator_unit_path_late);
2552 static void remove_generator_dir(Manager *m, char **generator) {
2559 strv_remove(m->lookup_paths.unit_path, *generator);
2560 rm_rf(*generator, false, true, false);
2566 void manager_undo_generators(Manager *m) {
2569 remove_generator_dir(m, &m->generator_unit_path);
2570 remove_generator_dir(m, &m->generator_unit_path_early);
2571 remove_generator_dir(m, &m->generator_unit_path_late);
2574 int manager_set_default_environment(Manager *m, char **environment) {
2578 e = strv_env_merge(2, m->environment, environment);
2581 strv_free(m->environment);
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;