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"
74 /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
75 #define GC_QUEUE_ENTRIES_MAX 16
77 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
78 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
80 /* Where clients shall send notification messages to */
81 #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify"
83 static int manager_setup_notify(Manager *m) {
86 struct sockaddr_un un;
88 struct epoll_event ev;
93 m->notify_watch.type = WATCH_NOTIFY;
94 m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
95 if (m->notify_watch.fd < 0) {
96 log_error("Failed to allocate notification socket: %m");
101 sa.sa.sa_family = AF_UNIX;
103 if (getpid() != 1 || detect_container(NULL) > 0)
104 snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull());
106 strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path));
108 sa.un.sun_path[0] = 0;
110 if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
111 log_error("bind() failed: %m");
115 if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
116 log_error("SO_PASSCRED failed: %m");
122 ev.data.ptr = &m->notify_watch;
124 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) {
125 log_error("Failed to add timer change fd to epoll: %m");
129 sa.un.sun_path[0] = '@';
130 m->notify_socket = strdup(sa.un.sun_path);
131 if (!m->notify_socket)
134 log_debug("Using notification socket %s", m->notify_socket);
139 static int manager_setup_time_change(Manager *m) {
140 struct epoll_event ev;
141 struct itimerspec its;
144 assert(m->time_change_watch.type == WATCH_INVALID);
146 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
147 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
149 m->time_change_watch.type = WATCH_TIME_CHANGE;
150 m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
151 if (m->time_change_watch.fd < 0) {
152 log_error("Failed to create timerfd: %m");
158 /* We only care for the cancellation event, hence we set the
159 * timeout to the latest possible value. */
160 assert_cc(sizeof(time_t) == sizeof(long));
161 its.it_value.tv_sec = LONG_MAX;
163 if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
164 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
165 close_nointr_nofail(m->time_change_watch.fd);
166 watch_init(&m->time_change_watch);
172 ev.data.ptr = &m->time_change_watch;
174 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) {
175 log_error("Failed to add timer change fd to epoll: %m");
179 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
184 static int enable_special_signals(Manager *m) {
189 /* Enable that we get SIGINT on control-alt-del. In containers
190 * this will fail with EPERM (older) or EINVAL (newer), so
192 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
193 log_warning("Failed to enable ctrl-alt-del handling: %m");
195 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
197 /* Support systems without virtual console */
199 log_warning("Failed to open /dev/tty0: %m");
201 /* Enable that we get SIGWINCH on kbrequest */
202 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
203 log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
205 close_nointr_nofail(fd);
211 static int manager_setup_signals(Manager *m) {
213 struct epoll_event ev;
218 /* We are not interested in SIGSTOP and friends. */
220 sa.sa_handler = SIG_DFL;
221 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
222 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
224 assert_se(sigemptyset(&mask) == 0);
226 sigset_add_many(&mask,
227 SIGCHLD, /* Child died */
228 SIGTERM, /* Reexecute daemon */
229 SIGHUP, /* Reload configuration */
230 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
231 SIGUSR2, /* systemd: dump status */
232 SIGINT, /* Kernel sends us this on control-alt-del */
233 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
234 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
235 SIGRTMIN+0, /* systemd: start default.target */
236 SIGRTMIN+1, /* systemd: isolate rescue.target */
237 SIGRTMIN+2, /* systemd: isolate emergency.target */
238 SIGRTMIN+3, /* systemd: start halt.target */
239 SIGRTMIN+4, /* systemd: start poweroff.target */
240 SIGRTMIN+5, /* systemd: start reboot.target */
241 SIGRTMIN+6, /* systemd: start kexec.target */
242 SIGRTMIN+13, /* systemd: Immediate halt */
243 SIGRTMIN+14, /* systemd: Immediate poweroff */
244 SIGRTMIN+15, /* systemd: Immediate reboot */
245 SIGRTMIN+16, /* systemd: Immediate kexec */
246 SIGRTMIN+20, /* systemd: enable status messages */
247 SIGRTMIN+21, /* systemd: disable status messages */
248 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
249 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
250 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
251 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
252 SIGRTMIN+27, /* systemd: set log target to console */
253 SIGRTMIN+28, /* systemd: set log target to kmsg */
254 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */
256 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
258 m->signal_watch.type = WATCH_SIGNAL;
259 m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
260 if (m->signal_watch.fd < 0)
265 ev.data.ptr = &m->signal_watch;
267 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
270 if (m->running_as == SYSTEMD_SYSTEM)
271 return enable_special_signals(m);
276 static void manager_strip_environment(Manager *m) {
279 /* Remove variables from the inherited set that are part of
280 * the container interface:
281 * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
282 strv_remove_prefix(m->environment, "container=");
283 strv_remove_prefix(m->environment, "container_");
285 /* Remove variables from the inherited set that are part of
286 * the initrd interface:
287 * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
288 strv_remove_prefix(m->environment, "RD_");
291 int manager_new(SystemdRunningAs running_as, Manager **_m) {
296 assert(running_as >= 0);
297 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
299 m = new0(Manager, 1);
303 dual_timestamp_get(&m->userspace_timestamp);
305 m->running_as = running_as;
306 m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
307 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
308 m->pin_cgroupfs_fd = -1;
309 m->idle_pipe[0] = m->idle_pipe[1] = -1;
311 watch_init(&m->signal_watch);
312 watch_init(&m->mount_watch);
313 watch_init(&m->swap_watch);
314 watch_init(&m->udev_watch);
315 watch_init(&m->time_change_watch);
317 m->epoll_fd = m->dev_autofs_fd = -1;
318 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
320 m->environment = strv_copy(environ);
324 manager_strip_environment(m);
326 if (running_as == SYSTEMD_SYSTEM) {
327 m->default_controllers = strv_new("cpu", NULL);
328 if (!m->default_controllers)
332 if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
335 if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
338 if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
341 if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
344 if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
347 m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
351 r = manager_setup_signals(m);
355 r = manager_setup_cgroup(m);
359 r = manager_setup_notify(m);
363 r = manager_setup_time_change(m);
367 /* Try to connect to the busses, if possible. */
368 r = bus_init(m, running_as != SYSTEMD_SYSTEM);
372 m->taint_usr = dir_is_empty("/usr") > 0;
382 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
388 while ((u = m->cleanup_queue)) {
389 assert(u->in_cleanup_queue);
399 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
400 GC_OFFSET_UNSURE, /* No clue */
401 GC_OFFSET_GOOD, /* We still need this unit */
402 GC_OFFSET_BAD, /* We don't need this unit anymore */
406 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
413 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
414 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
415 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
418 if (u->in_cleanup_queue)
421 if (unit_check_gc(u))
424 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
428 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
429 unit_gc_sweep(other, gc_marker);
431 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
434 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
441 /* We were unable to find anything out about this entry, so
442 * let's investigate it later */
443 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
444 unit_add_to_gc_queue(u);
448 /* We definitely know that this one is not useful anymore, so
449 * let's mark it for deletion */
450 u->gc_marker = gc_marker + GC_OFFSET_BAD;
451 unit_add_to_cleanup_queue(u);
455 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
458 static unsigned manager_dispatch_gc_queue(Manager *m) {
465 if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
466 (m->gc_queue_timestamp <= 0 ||
467 (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
470 log_debug("Running GC...");
472 m->gc_marker += _GC_OFFSET_MAX;
473 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
476 gc_marker = m->gc_marker;
478 while ((u = m->gc_queue)) {
479 assert(u->in_gc_queue);
481 unit_gc_sweep(u, gc_marker);
483 LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
484 u->in_gc_queue = false;
488 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
489 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
490 log_debug("Collecting %s", u->id);
491 u->gc_marker = gc_marker + GC_OFFSET_BAD;
492 unit_add_to_cleanup_queue(u);
496 m->n_in_gc_queue = 0;
497 m->gc_queue_timestamp = 0;
502 static void manager_clear_jobs_and_units(Manager *m) {
507 while ((u = hashmap_first(m->units)))
510 manager_dispatch_cleanup_queue(m);
512 assert(!m->load_queue);
513 assert(!m->run_queue);
514 assert(!m->dbus_unit_queue);
515 assert(!m->dbus_job_queue);
516 assert(!m->cleanup_queue);
517 assert(!m->gc_queue);
519 assert(hashmap_isempty(m->jobs));
520 assert(hashmap_isempty(m->units));
523 void manager_free(Manager *m) {
529 manager_clear_jobs_and_units(m);
531 for (c = 0; c < _UNIT_TYPE_MAX; c++)
532 if (unit_vtable[c]->shutdown)
533 unit_vtable[c]->shutdown(m);
535 /* If we reexecute ourselves, we keep the root cgroup
537 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
539 manager_undo_generators(m);
543 hashmap_free(m->units);
544 hashmap_free(m->jobs);
545 hashmap_free(m->watch_pids);
546 hashmap_free(m->watch_bus);
548 if (m->epoll_fd >= 0)
549 close_nointr_nofail(m->epoll_fd);
550 if (m->signal_watch.fd >= 0)
551 close_nointr_nofail(m->signal_watch.fd);
552 if (m->notify_watch.fd >= 0)
553 close_nointr_nofail(m->notify_watch.fd);
554 if (m->time_change_watch.fd >= 0)
555 close_nointr_nofail(m->time_change_watch.fd);
557 free(m->notify_socket);
559 lookup_paths_free(&m->lookup_paths);
560 strv_free(m->environment);
562 strv_free(m->default_controllers);
564 hashmap_free(m->cgroup_bondings);
565 set_free_free(m->unit_path_cache);
567 close_pipe(m->idle_pipe);
569 free(m->switch_root);
570 free(m->switch_root_init);
572 for (i = 0; i < RLIMIT_NLIMITS; i++)
578 int manager_enumerate(Manager *m) {
584 /* Let's ask every type to load all units from disk/kernel
585 * that it might know */
586 for (c = 0; c < _UNIT_TYPE_MAX; c++)
587 if (unit_vtable[c]->enumerate)
588 if ((q = unit_vtable[c]->enumerate(m)) < 0)
591 manager_dispatch_load_queue(m);
595 int manager_coldplug(Manager *m) {
603 /* Then, let's set up their initial state. */
604 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
610 if ((q = unit_coldplug(u)) < 0)
617 static void manager_build_unit_path_cache(Manager *m) {
624 set_free_free(m->unit_path_cache);
626 if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) {
627 log_error("Failed to allocate unit path cache.");
631 /* This simply builds a list of files we know exist, so that
632 * we don't always have to go to disk */
634 STRV_FOREACH(i, m->lookup_paths.unit_path) {
639 log_error("Failed to open directory: %m");
643 while ((de = readdir(d))) {
646 if (ignore_file(de->d_name))
649 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
655 if ((r = set_put(m->unit_path_cache, p)) < 0) {
668 log_error("Failed to build unit path cache: %s", strerror(-r));
670 set_free_free(m->unit_path_cache);
671 m->unit_path_cache = NULL;
677 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
682 manager_run_generators(m);
684 r = lookup_paths_init(
685 &m->lookup_paths, m->running_as, true,
686 m->generator_unit_path,
687 m->generator_unit_path_early,
688 m->generator_unit_path_late);
692 manager_build_unit_path_cache(m);
694 /* If we will deserialize make sure that during enumeration
695 * this is already known, so we increase the counter here
700 /* First, enumerate what we can from all config files */
701 r = manager_enumerate(m);
703 /* Second, deserialize if there is something to deserialize */
705 q = manager_deserialize(m, serialization, fds);
710 /* Any fds left? Find some unit which wants them. This is
711 * useful to allow container managers to pass some file
712 * descriptors to us pre-initialized. This enables
713 * socket-based activation of entire containers. */
714 if (fdset_size(fds) > 0) {
715 q = manager_distribute_fds(m, fds);
720 /* Third, fire things up! */
721 q = manager_coldplug(m);
726 assert(m->n_reloading > 0);
733 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
738 assert(type < _JOB_TYPE_MAX);
740 assert(mode < _JOB_MODE_MAX);
742 if (mode == JOB_ISOLATE && type != JOB_START) {
743 dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
747 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
748 dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
752 log_debug("Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
754 job_type_collapse(&type, unit);
756 tr = transaction_new();
760 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
761 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
762 mode == JOB_IGNORE_DEPENDENCIES, e);
766 if (mode == JOB_ISOLATE) {
767 r = transaction_add_isolate_jobs(tr, m);
772 r = transaction_activate(tr, m, mode, e);
776 log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) tr->anchor_job->id);
779 *_ret = tr->anchor_job;
781 transaction_free(tr);
785 transaction_abort(tr);
786 transaction_free(tr);
790 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
795 assert(type < _JOB_TYPE_MAX);
797 assert(mode < _JOB_MODE_MAX);
799 r = manager_load_unit(m, name, NULL, NULL, &unit);
803 return manager_add_job(m, type, unit, mode, override, e, _ret);
806 Job *manager_get_job(Manager *m, uint32_t id) {
809 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
812 Unit *manager_get_unit(Manager *m, const char *name) {
816 return hashmap_get(m->units, name);
819 unsigned manager_dispatch_load_queue(Manager *m) {
825 /* Make sure we are not run recursively */
826 if (m->dispatching_load_queue)
829 m->dispatching_load_queue = true;
831 /* Dispatches the load queue. Takes a unit from the queue and
832 * tries to load its data until the queue is empty */
834 while ((u = m->load_queue)) {
835 assert(u->in_load_queue);
841 m->dispatching_load_queue = false;
845 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
851 assert(name || path);
853 /* This will prepare the unit for loading, but not actually
854 * load anything from disk. */
856 if (path && !is_path(path)) {
857 dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
862 name = path_get_file_name(path);
864 t = unit_name_to_type(name);
866 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) {
867 dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
871 ret = manager_get_unit(m, name);
877 ret = unit_new(m, unit_vtable[t]->object_size);
882 ret->fragment_path = strdup(path);
883 if (!ret->fragment_path) {
889 if ((r = unit_add_name(ret, name)) < 0) {
894 unit_add_to_load_queue(ret);
895 unit_add_to_dbus_queue(ret);
896 unit_add_to_gc_queue(ret);
904 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
909 /* This will load the service information files, but not actually
910 * start any services or anything. */
912 r = manager_load_unit_prepare(m, name, path, e, _ret);
916 manager_dispatch_load_queue(m);
919 *_ret = unit_follow_merge(*_ret);
924 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
931 HASHMAP_FOREACH(j, s->jobs, i)
932 job_dump(j, f, prefix);
935 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
943 HASHMAP_FOREACH_KEY(u, t, s->units, i)
945 unit_dump(u, f, prefix);
948 void manager_clear_jobs(Manager *m) {
953 while ((j = hashmap_first(m->jobs)))
954 /* No need to recurse. We're cancelling all jobs. */
955 job_finish_and_invalidate(j, JOB_CANCELED, false);
958 unsigned manager_dispatch_run_queue(Manager *m) {
962 if (m->dispatching_run_queue)
965 m->dispatching_run_queue = true;
967 while ((j = m->run_queue)) {
968 assert(j->installed);
969 assert(j->in_run_queue);
971 job_run_and_invalidate(j);
975 m->dispatching_run_queue = false;
979 unsigned manager_dispatch_dbus_queue(Manager *m) {
986 if (m->dispatching_dbus_queue)
989 m->dispatching_dbus_queue = true;
991 while ((u = m->dbus_unit_queue)) {
992 assert(u->in_dbus_queue);
994 bus_unit_send_change_signal(u);
998 while ((j = m->dbus_job_queue)) {
999 assert(j->in_dbus_queue);
1001 bus_job_send_change_signal(j);
1005 m->dispatching_dbus_queue = false;
1009 static int manager_process_notify_fd(Manager *m) {
1016 struct msghdr msghdr;
1018 struct ucred *ucred;
1020 struct cmsghdr cmsghdr;
1021 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1027 iovec.iov_base = buf;
1028 iovec.iov_len = sizeof(buf)-1;
1032 msghdr.msg_iov = &iovec;
1033 msghdr.msg_iovlen = 1;
1034 msghdr.msg_control = &control;
1035 msghdr.msg_controllen = sizeof(control);
1037 n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT);
1042 if (errno == EAGAIN || errno == EINTR)
1048 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1049 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1050 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1051 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1052 log_warning("Received notify message without credentials. Ignoring.");
1056 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1058 u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
1060 u = cgroup_unit_by_pid(m, ucred->pid);
1062 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
1067 assert((size_t) n < sizeof(buf));
1069 tags = strv_split(buf, "\n\r");
1073 log_debug("Got notification message for unit %s", u->id);
1075 if (UNIT_VTABLE(u)->notify_message)
1076 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
1084 static int manager_dispatch_sigchld(Manager *m) {
1094 /* First we call waitd() for a PID and do not reap the
1095 * zombie. That way we can still access /proc/$PID for
1096 * it while it is a zombie. */
1097 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1099 if (errno == ECHILD)
1111 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1112 char _cleanup_free_ *name = NULL;
1114 get_process_comm(si.si_pid, &name);
1115 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
1118 /* Let's flush any message the dying child might still
1119 * have queued for us. This ensures that the process
1120 * still exists in /proc so that we can figure out
1121 * which cgroup and hence unit it belongs to. */
1122 r = manager_process_notify_fd(m);
1126 /* And now figure out the unit this belongs to */
1127 u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
1129 u = cgroup_unit_by_pid(m, si.si_pid);
1131 /* And now, we actually reap the zombie. */
1132 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1139 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1142 log_debug("Child %lu died (code=%s, status=%i/%s)",
1143 (long unsigned) si.si_pid,
1144 sigchld_code_to_string(si.si_code),
1146 strna(si.si_code == CLD_EXITED
1147 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1148 : signal_to_string(si.si_status)));
1153 log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
1155 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
1156 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1162 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1166 dbus_error_init(&error);
1168 log_debug("Activating special unit %s", name);
1170 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1172 log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r));
1174 dbus_error_free(&error);
1179 static int manager_process_signal_fd(Manager *m) {
1181 struct signalfd_siginfo sfsi;
1182 bool sigchld = false;
1187 n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi));
1188 if (n != sizeof(sfsi)) {
1193 if (errno == EINTR || errno == EAGAIN)
1199 if (sfsi.ssi_pid > 0) {
1202 get_process_comm(sfsi.ssi_pid, &p);
1204 log_debug("Received SIG%s from PID %lu (%s).",
1205 signal_to_string(sfsi.ssi_signo),
1206 (unsigned long) sfsi.ssi_pid, strna(p));
1209 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
1211 switch (sfsi.ssi_signo) {
1218 if (m->running_as == SYSTEMD_SYSTEM) {
1219 /* This is for compatibility with the
1220 * original sysvinit */
1221 m->exit_code = MANAGER_REEXECUTE;
1228 if (m->running_as == SYSTEMD_SYSTEM) {
1229 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
1233 /* Run the exit target if there is one, if not, just exit. */
1234 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1235 m->exit_code = MANAGER_EXIT;
1242 if (m->running_as == SYSTEMD_SYSTEM)
1243 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1245 /* This is a nop on non-init */
1249 if (m->running_as == SYSTEMD_SYSTEM)
1250 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1252 /* This is a nop on non-init */
1258 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1260 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1261 log_info("Trying to reconnect to bus...");
1265 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1266 log_info("Loading D-Bus service...");
1267 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1278 if (!(f = open_memstream(&dump, &size))) {
1279 log_warning("Failed to allocate memory stream.");
1283 manager_dump_units(m, f, "\t");
1284 manager_dump_jobs(m, f, "\t");
1289 log_warning("Failed to write status stream");
1294 log_dump(LOG_INFO, dump);
1301 m->exit_code = MANAGER_RELOAD;
1306 /* Starting SIGRTMIN+0 */
1307 static const char * const target_table[] = {
1308 [0] = SPECIAL_DEFAULT_TARGET,
1309 [1] = SPECIAL_RESCUE_TARGET,
1310 [2] = SPECIAL_EMERGENCY_TARGET,
1311 [3] = SPECIAL_HALT_TARGET,
1312 [4] = SPECIAL_POWEROFF_TARGET,
1313 [5] = SPECIAL_REBOOT_TARGET,
1314 [6] = SPECIAL_KEXEC_TARGET
1317 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1318 static const ManagerExitCode code_table[] = {
1320 [1] = MANAGER_POWEROFF,
1321 [2] = MANAGER_REBOOT,
1325 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1326 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1327 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1328 manager_start_target(m, target_table[idx],
1329 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1333 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1334 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1335 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1339 switch (sfsi.ssi_signo - SIGRTMIN) {
1342 log_debug("Enabling showing of status.");
1343 manager_set_show_status(m, true);
1347 log_debug("Disabling showing of status.");
1348 manager_set_show_status(m, false);
1352 log_set_max_level(LOG_DEBUG);
1353 log_notice("Setting log level to debug.");
1357 log_set_max_level(LOG_INFO);
1358 log_notice("Setting log level to info.");
1362 if (m->running_as == SYSTEMD_USER) {
1363 m->exit_code = MANAGER_EXIT;
1367 /* This is a nop on init */
1371 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1372 log_notice("Setting log target to journal-or-kmsg.");
1376 log_set_target(LOG_TARGET_CONSOLE);
1377 log_notice("Setting log target to console.");
1381 log_set_target(LOG_TARGET_KMSG);
1382 log_notice("Setting log target to kmsg.");
1386 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1387 log_notice("Setting log target to syslog-or-kmsg.");
1391 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1398 return manager_dispatch_sigchld(m);
1403 static int process_event(Manager *m, struct epoll_event *ev) {
1410 assert_se(w = ev->data.ptr);
1412 if (w->type == WATCH_INVALID)
1419 /* An incoming signal? */
1420 if (ev->events != EPOLLIN)
1423 if ((r = manager_process_signal_fd(m)) < 0)
1430 /* An incoming daemon notification event? */
1431 if (ev->events != EPOLLIN)
1434 if ((r = manager_process_notify_fd(m)) < 0)
1441 /* Some fd event, to be dispatched to the units */
1442 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
1445 case WATCH_UNIT_TIMER:
1446 case WATCH_JOB_TIMER: {
1450 /* Some timer event, to be dispatched to the units */
1451 k = read(w->fd, &v, sizeof(v));
1452 if (k != sizeof(v)) {
1454 if (k < 0 && (errno == EINTR || errno == EAGAIN))
1457 log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read");
1458 return k < 0 ? -errno : -EIO;
1461 if (w->type == WATCH_UNIT_TIMER)
1462 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
1464 job_timer_event(w->data.job, v, w);
1469 /* Some mount table change, intended for the mount subsystem */
1470 mount_fd_event(m, ev->events);
1474 /* Some swap table change, intended for the swap subsystem */
1475 swap_fd_event(m, ev->events);
1479 /* Some notification from udev, intended for the device subsystem */
1480 device_fd_event(m, ev->events);
1483 case WATCH_DBUS_WATCH:
1484 bus_watch_event(m, w, ev->events);
1487 case WATCH_DBUS_TIMEOUT:
1488 bus_timeout_event(m, w, ev->events);
1491 case WATCH_TIME_CHANGE: {
1495 log_struct(LOG_INFO,
1496 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1497 "MESSAGE=Time has been changed",
1500 /* Restart the watch */
1501 close_nointr_nofail(m->time_change_watch.fd);
1502 watch_init(&m->time_change_watch);
1503 manager_setup_time_change(m);
1505 HASHMAP_FOREACH(u, m->units, i) {
1506 if (UNIT_VTABLE(u)->time_change)
1507 UNIT_VTABLE(u)->time_change(u);
1514 log_error("event type=%i", w->type);
1515 assert_not_reached("Unknown epoll event type.");
1521 int manager_loop(Manager *m) {
1524 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1527 m->exit_code = MANAGER_RUNNING;
1529 /* Release the path cache */
1530 set_free_free(m->unit_path_cache);
1531 m->unit_path_cache = NULL;
1533 manager_check_finished(m);
1535 /* There might still be some zombies hanging around from
1536 * before we were exec()'ed. Leat's reap them */
1537 r = manager_dispatch_sigchld(m);
1541 while (m->exit_code == MANAGER_RUNNING) {
1542 struct epoll_event event;
1546 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1549 if (!ratelimit_test(&rl)) {
1550 /* Yay, something is going seriously wrong, pause a little */
1551 log_warning("Looping too fast. Throttling execution a little.");
1556 if (manager_dispatch_load_queue(m) > 0)
1559 if (manager_dispatch_run_queue(m) > 0)
1562 if (bus_dispatch(m) > 0)
1565 if (manager_dispatch_cleanup_queue(m) > 0)
1568 if (manager_dispatch_gc_queue(m) > 0)
1571 if (manager_dispatch_dbus_queue(m) > 0)
1574 if (swap_dispatch_reload(m) > 0)
1577 /* Sleep for half the watchdog time */
1578 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1579 wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
1585 n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
1597 r = process_event(m, &event);
1602 return m->exit_code;
1605 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) {
1614 if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
1617 n = bus_path_unescape(s+31);
1621 r = manager_load_unit(m, n, NULL, e, &u);
1632 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1641 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
1644 r = safe_atou(s + 30, &id);
1648 j = manager_get_job(m, id);
1657 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
1663 audit_fd = get_audit_fd();
1667 /* Don't generate audit events if the service was already
1668 * started and we're just deserializing */
1669 if (m->n_reloading > 0)
1672 if (m->running_as != SYSTEMD_SYSTEM)
1675 if (u->type != UNIT_SERVICE)
1678 p = unit_name_to_prefix_and_instance(u->id);
1680 log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
1684 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
1685 if (errno == EPERM) {
1686 /* We aren't allowed to send audit messages?
1687 * Then let's not retry again. */
1690 log_warning("Failed to send audit message: %m");
1698 void manager_send_unit_plymouth(Manager *m, Unit *u) {
1700 union sockaddr_union sa;
1702 char *message = NULL;
1704 /* Don't generate plymouth events if the service was already
1705 * started and we're just deserializing */
1706 if (m->n_reloading > 0)
1709 if (m->running_as != SYSTEMD_SYSTEM)
1712 if (u->type != UNIT_SERVICE &&
1713 u->type != UNIT_MOUNT &&
1714 u->type != UNIT_SWAP)
1717 /* We set SOCK_NONBLOCK here so that we rather drop the
1718 * message then wait for plymouth */
1719 if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
1720 log_error("socket() failed: %m");
1725 sa.sa.sa_family = AF_UNIX;
1726 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
1727 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
1729 if (errno != EPIPE &&
1732 errno != ECONNREFUSED &&
1733 errno != ECONNRESET &&
1734 errno != ECONNABORTED)
1735 log_error("connect() failed: %m");
1740 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
1746 if (write(fd, message, n + 1) != n + 1) {
1748 if (errno != EPIPE &&
1751 errno != ECONNREFUSED &&
1752 errno != ECONNRESET &&
1753 errno != ECONNABORTED)
1754 log_error("Failed to write Plymouth message: %m");
1761 close_nointr_nofail(fd);
1766 void manager_dispatch_bus_name_owner_changed(
1769 const char* old_owner,
1770 const char *new_owner) {
1777 if (!(u = hashmap_get(m->watch_bus, name)))
1780 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
1783 void manager_dispatch_bus_query_pid_done(
1794 if (!(u = hashmap_get(m->watch_bus, name)))
1797 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
1800 int manager_open_serialization(Manager *m, FILE **_f) {
1808 if (m->running_as == SYSTEMD_SYSTEM)
1809 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
1811 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
1816 saved_umask = umask(0077);
1817 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
1827 log_debug("Serializing state to %s", path);
1830 f = fdopen(fd, "w+");
1839 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) {
1851 fprintf(f, "current-job-id=%i\n", m->current_job_id);
1852 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
1853 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
1854 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
1856 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
1857 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
1858 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
1859 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
1862 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
1863 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
1868 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
1872 if (!unit_can_serialize(u))
1879 if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) {
1885 assert(m->n_reloading > 0);
1891 r = bus_fdset_add_all(m, fds);
1898 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
1904 log_debug("Deserializing state...");
1909 char line[LINE_MAX], *l;
1911 if (!fgets(line, sizeof(line), f)) {
1926 if (startswith(l, "current-job-id=")) {
1929 if (safe_atou32(l+15, &id) < 0)
1930 log_debug("Failed to parse current job id value %s", l+15);
1932 m->current_job_id = MAX(m->current_job_id, id);
1933 } else if (startswith(l, "n-installed-jobs=")) {
1936 if (safe_atou32(l+17, &n) < 0)
1937 log_debug("Failed to parse installed jobs counter %s", l+17);
1939 m->n_installed_jobs += n;
1940 } else if (startswith(l, "n-failed-jobs=")) {
1943 if (safe_atou32(l+14, &n) < 0)
1944 log_debug("Failed to parse failed jobs counter %s", l+14);
1946 m->n_failed_jobs += n;
1947 } else if (startswith(l, "taint-usr=")) {
1950 if ((b = parse_boolean(l+10)) < 0)
1951 log_debug("Failed to parse taint /usr flag %s", l+10);
1953 m->taint_usr = m->taint_usr || b;
1954 } else if (startswith(l, "firmware-timestamp="))
1955 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
1956 else if (startswith(l, "loader-timestamp="))
1957 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
1958 else if (startswith(l, "kernel-timestamp="))
1959 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
1960 else if (startswith(l, "initrd-timestamp="))
1961 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
1962 else if (startswith(l, "userspace-timestamp="))
1963 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
1964 else if (startswith(l, "finish-timestamp="))
1965 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
1967 log_debug("Unknown serialization item '%s'", l);
1972 char name[UNIT_NAME_MAX+2];
1975 if (!fgets(name, sizeof(name), f)) {
1986 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
1990 r = unit_deserialize(u, f, fds);
2001 assert(m->n_reloading > 0);
2007 int manager_distribute_fds(Manager *m, FDSet *fds) {
2014 HASHMAP_FOREACH(u, m->units, i) {
2016 if (fdset_size(fds) <= 0)
2019 if (UNIT_VTABLE(u)->distribute_fds) {
2020 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
2029 int manager_reload(Manager *m) {
2036 r = manager_open_serialization(m, &f);
2049 r = manager_serialize(m, f, fds, true);
2055 if (fseeko(f, 0, SEEK_SET) < 0) {
2061 /* From here on there is no way back. */
2062 manager_clear_jobs_and_units(m);
2063 manager_undo_generators(m);
2064 lookup_paths_free(&m->lookup_paths);
2066 /* Find new unit paths */
2067 manager_run_generators(m);
2069 q = lookup_paths_init(
2070 &m->lookup_paths, m->running_as, true,
2071 m->generator_unit_path,
2072 m->generator_unit_path_early,
2073 m->generator_unit_path_late);
2077 manager_build_unit_path_cache(m);
2079 /* First, enumerate what we can from all config files */
2080 q = manager_enumerate(m);
2084 /* Second, deserialize our stored data */
2085 q = manager_deserialize(m, f, fds);
2092 /* Third, fire things up! */
2093 q = manager_coldplug(m);
2097 assert(m->n_reloading > 0);
2110 bool manager_is_booting_or_shutting_down(Manager *m) {
2115 /* Is the initial job still around? */
2116 if (manager_get_job(m, m->default_unit_job_id))
2119 /* Is there a job for the shutdown target? */
2120 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2127 void manager_reset_failed(Manager *m) {
2133 HASHMAP_FOREACH(u, m->units, i)
2134 unit_reset_failed(u);
2137 bool manager_unit_pending_inactive(Manager *m, const char *name) {
2143 /* Returns true if the unit is inactive or going down */
2144 u = manager_get_unit(m, name);
2148 return unit_pending_inactive(u);
2151 void manager_check_finished(Manager *m) {
2152 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2153 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2157 if (hashmap_size(m->jobs) > 0)
2160 /* Notify Type=idle units that we are done now */
2161 close_pipe(m->idle_pipe);
2163 /* Turn off confirm spawn now */
2164 m->confirm_spawn = false;
2166 if (dual_timestamp_is_set(&m->finish_timestamp))
2169 dual_timestamp_get(&m->finish_timestamp);
2171 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2173 /* Note that m->kernel_usec.monotonic is always at 0,
2174 * and m->firmware_usec.monotonic and
2175 * m->loader_usec.monotonic should be considered
2176 * negative values. */
2178 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2179 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2180 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2181 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2183 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2185 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2186 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2188 if (!log_on_console())
2189 log_struct(LOG_INFO,
2190 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2191 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2192 "INITRD_USEC=%llu", (unsigned long long) initrd_usec,
2193 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2194 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2195 format_timespan(kernel, sizeof(kernel), kernel_usec),
2196 format_timespan(initrd, sizeof(initrd), initrd_usec),
2197 format_timespan(userspace, sizeof(userspace), userspace_usec),
2198 format_timespan(sum, sizeof(sum), total_usec),
2201 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2204 if (!log_on_console())
2205 log_struct(LOG_INFO,
2206 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2207 "KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
2208 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2209 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2210 format_timespan(kernel, sizeof(kernel), kernel_usec),
2211 format_timespan(userspace, sizeof(userspace), userspace_usec),
2212 format_timespan(sum, sizeof(sum), total_usec),
2216 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2217 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2219 if (!log_on_console())
2220 log_struct(LOG_INFO,
2221 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2222 "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
2223 "MESSAGE=Startup finished in %s.",
2224 format_timespan(sum, sizeof(sum), total_usec),
2228 bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2231 "READY=1\nSTATUS=Startup finished in %s.",
2232 format_timespan(sum, sizeof(sum), total_usec));
2235 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2246 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2248 p = strappend("/run/systemd/", name);
2252 r = mkdir_p_label(p, 0755);
2254 log_error("Failed to create generator directory: %s", strerror(-r));
2259 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2265 log_error("Failed to create generator directory: %m");
2274 static void trim_generator_dir(Manager *m, char **generator) {
2281 if (rmdir(*generator) >= 0) {
2289 void manager_run_generators(Manager *m) {
2291 const char *generator_path;
2292 const char *argv[5];
2298 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2299 d = opendir(generator_path);
2301 if (errno == ENOENT)
2304 log_error("Failed to enumerate generator directory: %m");
2308 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2312 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2316 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2320 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2321 argv[1] = m->generator_unit_path;
2322 argv[2] = m->generator_unit_path_early;
2323 argv[3] = m->generator_unit_path_late;
2327 execute_directory(generator_path, d, (char**) argv);
2330 trim_generator_dir(m, &m->generator_unit_path);
2331 trim_generator_dir(m, &m->generator_unit_path_early);
2332 trim_generator_dir(m, &m->generator_unit_path_late);
2339 static void remove_generator_dir(Manager *m, char **generator) {
2346 strv_remove(m->lookup_paths.unit_path, *generator);
2347 rm_rf(*generator, false, true, false);
2353 void manager_undo_generators(Manager *m) {
2356 remove_generator_dir(m, &m->generator_unit_path);
2357 remove_generator_dir(m, &m->generator_unit_path_early);
2358 remove_generator_dir(m, &m->generator_unit_path_late);
2361 int manager_set_default_controllers(Manager *m, char **controllers) {
2366 l = strv_copy(controllers);
2370 strv_free(m->default_controllers);
2371 m->default_controllers = l;
2373 cg_shorten_controllers(m->default_controllers);
2378 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2383 for (i = 0; i < RLIMIT_NLIMITS; i++) {
2384 if (!default_rlimit[i])
2387 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2395 void manager_recheck_journal(Manager *m) {
2400 if (m->running_as != SYSTEMD_SYSTEM)
2403 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2404 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2405 log_close_journal();
2409 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2410 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2411 log_close_journal();
2415 /* Hmm, OK, so the socket is fully up and the service is up
2416 * too, then let's make use of the thing. */
2420 void manager_set_show_status(Manager *m, bool b) {
2423 if (m->running_as != SYSTEMD_SYSTEM)
2429 touch("/run/systemd/show-status");
2431 unlink("/run/systemd/show-status");
2434 bool manager_get_show_status(Manager *m) {
2437 if (m->running_as != SYSTEMD_SYSTEM)
2443 /* If Plymouth is running make sure we show the status, so
2444 * that there's something nice to see when people press Esc */
2446 return plymouth_running();
2449 void watch_init(Watch *w) {
2452 w->type = WATCH_INVALID;