1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include <sys/epoll.h>
27 #include <sys/signalfd.h>
31 #include <sys/reboot.h>
32 #include <sys/ioctl.h>
36 #include <sys/types.h>
39 #include <sys/timerfd.h>
45 #include "systemd/sd-daemon.h"
46 #include "systemd/sd-id128.h"
47 #include "systemd/sd-messages.h"
50 #include "transaction.h"
57 #include "ratelimit.h"
59 #include "mount-setup.h"
60 #include "unit-name.h"
61 #include "dbus-unit.h"
64 #include "path-lookup.h"
66 #include "bus-errors.h"
67 #include "exit-status.h"
70 #include "cgroup-util.h"
71 #include "path-util.h"
76 /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
77 #define GC_QUEUE_ENTRIES_MAX 16
79 /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
80 #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
82 /* Initial delay and the interval for printing status messages about running jobs */
83 #define JOBS_IN_PROGRESS_WAIT_SEC 5
84 #define JOBS_IN_PROGRESS_PERIOD_SEC 1
85 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
87 /* Where clients shall send notification messages to */
88 #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify"
90 #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
92 static int manager_setup_notify(Manager *m) {
95 struct sockaddr_un un;
97 struct epoll_event ev;
102 m->notify_watch.type = WATCH_NOTIFY;
103 m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
104 if (m->notify_watch.fd < 0) {
105 log_error("Failed to allocate notification socket: %m");
110 sa.sa.sa_family = AF_UNIX;
112 if (getpid() != 1 || detect_container(NULL) > 0)
113 snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull());
115 strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path));
117 sa.un.sun_path[0] = 0;
119 if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
120 log_error("bind() failed: %m");
124 if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
125 log_error("SO_PASSCRED failed: %m");
131 ev.data.ptr = &m->notify_watch;
133 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) {
134 log_error("Failed to add notification socket fd to epoll: %m");
138 sa.un.sun_path[0] = '@';
139 m->notify_socket = strdup(sa.un.sun_path);
140 if (!m->notify_socket)
143 log_debug("Using notification socket %s", m->notify_socket);
148 static int manager_jobs_in_progress_mod_timer(Manager *m) {
149 struct itimerspec its;
153 its.it_value.tv_sec = JOBS_IN_PROGRESS_WAIT_SEC;
154 its.it_interval.tv_sec = JOBS_IN_PROGRESS_PERIOD_SEC;
156 if (timerfd_settime(m->jobs_in_progress_watch.fd, 0, &its, NULL) < 0)
162 static int manager_watch_jobs_in_progress(Manager *m) {
163 struct epoll_event ev;
168 if (m->jobs_in_progress_watch.type != WATCH_INVALID)
171 m->jobs_in_progress_watch.type = WATCH_JOBS_IN_PROGRESS;
172 m->jobs_in_progress_watch.fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
173 if (m->jobs_in_progress_watch.fd < 0) {
174 log_error("Failed to create timerfd: %m");
179 r = manager_jobs_in_progress_mod_timer(m);
181 log_error("Failed to set up timer for jobs progress watch: %s", strerror(-r));
187 ev.data.ptr = &m->jobs_in_progress_watch;
189 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->jobs_in_progress_watch.fd, &ev) < 0) {
190 log_error("Failed to add jobs progress timer fd to epoll: %m");
195 log_debug("Set up jobs progress timerfd.");
200 if (m->jobs_in_progress_watch.fd >= 0)
201 close_nointr_nofail(m->jobs_in_progress_watch.fd);
202 watch_init(&m->jobs_in_progress_watch);
206 static void manager_unwatch_jobs_in_progress(Manager *m) {
207 if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS)
210 assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->jobs_in_progress_watch.fd, NULL) >= 0);
211 close_nointr_nofail(m->jobs_in_progress_watch.fd);
212 watch_init(&m->jobs_in_progress_watch);
213 m->jobs_in_progress_iteration = 0;
215 log_debug("Closed jobs progress timerfd.");
218 #define CYLON_BUFFER_EXTRA (2*strlen(ANSI_RED_ON) + strlen(ANSI_HIGHLIGHT_RED_ON) + 2*strlen(ANSI_HIGHLIGHT_OFF))
219 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
222 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
223 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
227 memset(p, ' ', pos-2);
230 memcpy(p, ANSI_RED_ON, strlen(ANSI_RED_ON));
231 p += strlen(ANSI_RED_ON);
235 if (pos > 0 && pos <= width) {
236 memcpy(p, ANSI_HIGHLIGHT_RED_ON, strlen(ANSI_HIGHLIGHT_RED_ON));
237 p += strlen(ANSI_HIGHLIGHT_RED_ON);
241 memcpy(p, ANSI_HIGHLIGHT_OFF, strlen(ANSI_HIGHLIGHT_OFF));
242 p += strlen(ANSI_HIGHLIGHT_OFF);
245 memcpy(p, ANSI_RED_ON, strlen(ANSI_RED_ON));
246 p += strlen(ANSI_RED_ON);
249 memset(p, ' ', width-1-pos);
252 memcpy(p, ANSI_HIGHLIGHT_OFF, strlen(ANSI_HIGHLIGHT_OFF));
253 p += strlen(ANSI_HIGHLIGHT_OFF);
258 static void manager_print_jobs_in_progress(Manager *m) {
261 char *job_of_n = NULL;
262 unsigned counter = 0, print_nr;
263 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
266 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
268 HASHMAP_FOREACH(j, m->jobs, i)
269 if (j->state == JOB_RUNNING && counter++ == print_nr)
272 cylon_pos = m->jobs_in_progress_iteration % 14;
274 cylon_pos = 14 - cylon_pos;
275 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
277 if (m->n_running_jobs > 1)
278 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
281 manager_status_printf(m, true, cylon, "%sA %s job is running for %s",
282 strempty(job_of_n), job_type_to_string(j->type), unit_description(j->unit));
285 m->jobs_in_progress_iteration++;
288 static int manager_setup_time_change(Manager *m) {
289 struct epoll_event ev;
290 struct itimerspec its;
293 assert(m->time_change_watch.type == WATCH_INVALID);
295 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
296 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
298 m->time_change_watch.type = WATCH_TIME_CHANGE;
299 m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
300 if (m->time_change_watch.fd < 0) {
301 log_error("Failed to create timerfd: %m");
307 /* We only care for the cancellation event, hence we set the
308 * timeout to the latest possible value. */
309 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
310 its.it_value.tv_sec = TIME_T_MAX;
312 if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
313 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
314 close_nointr_nofail(m->time_change_watch.fd);
315 watch_init(&m->time_change_watch);
321 ev.data.ptr = &m->time_change_watch;
323 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) {
324 log_error("Failed to add timer change fd to epoll: %m");
328 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
333 static int enable_special_signals(Manager *m) {
338 /* Enable that we get SIGINT on control-alt-del. In containers
339 * this will fail with EPERM (older) or EINVAL (newer), so
341 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
342 log_warning("Failed to enable ctrl-alt-del handling: %m");
344 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
346 /* Support systems without virtual console */
348 log_warning("Failed to open /dev/tty0: %m");
350 /* Enable that we get SIGWINCH on kbrequest */
351 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
352 log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
354 close_nointr_nofail(fd);
360 static int manager_setup_signals(Manager *m) {
362 struct epoll_event ev;
367 /* We are not interested in SIGSTOP and friends. */
369 sa.sa_handler = SIG_DFL;
370 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
371 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
373 assert_se(sigemptyset(&mask) == 0);
375 sigset_add_many(&mask,
376 SIGCHLD, /* Child died */
377 SIGTERM, /* Reexecute daemon */
378 SIGHUP, /* Reload configuration */
379 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
380 SIGUSR2, /* systemd: dump status */
381 SIGINT, /* Kernel sends us this on control-alt-del */
382 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
383 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
384 SIGRTMIN+0, /* systemd: start default.target */
385 SIGRTMIN+1, /* systemd: isolate rescue.target */
386 SIGRTMIN+2, /* systemd: isolate emergency.target */
387 SIGRTMIN+3, /* systemd: start halt.target */
388 SIGRTMIN+4, /* systemd: start poweroff.target */
389 SIGRTMIN+5, /* systemd: start reboot.target */
390 SIGRTMIN+6, /* systemd: start kexec.target */
391 SIGRTMIN+13, /* systemd: Immediate halt */
392 SIGRTMIN+14, /* systemd: Immediate poweroff */
393 SIGRTMIN+15, /* systemd: Immediate reboot */
394 SIGRTMIN+16, /* systemd: Immediate kexec */
395 SIGRTMIN+20, /* systemd: enable status messages */
396 SIGRTMIN+21, /* systemd: disable status messages */
397 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
398 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
399 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
400 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
401 SIGRTMIN+27, /* systemd: set log target to console */
402 SIGRTMIN+28, /* systemd: set log target to kmsg */
403 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */
405 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
407 m->signal_watch.type = WATCH_SIGNAL;
408 m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
409 if (m->signal_watch.fd < 0)
414 ev.data.ptr = &m->signal_watch;
416 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
419 if (m->running_as == SYSTEMD_SYSTEM)
420 return enable_special_signals(m);
425 static void manager_strip_environment(Manager *m) {
428 /* Remove variables from the inherited set that are part of
429 * the container interface:
430 * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
431 strv_remove_prefix(m->environment, "container=");
432 strv_remove_prefix(m->environment, "container_");
434 /* Remove variables from the inherited set that are part of
435 * the initrd interface:
436 * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
437 strv_remove_prefix(m->environment, "RD_");
439 /* Drop invalid entries */
440 strv_env_clean(m->environment);
443 int manager_new(SystemdRunningAs running_as, Manager **_m) {
448 assert(running_as >= 0);
449 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
451 m = new0(Manager, 1);
455 dual_timestamp_get(&m->userspace_timestamp);
456 dual_timestamp_from_monotonic(&m->kernel_timestamp, 0);
458 efi_get_boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
461 m->running_as = running_as;
462 m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
463 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
464 m->pin_cgroupfs_fd = -1;
465 m->idle_pipe[0] = m->idle_pipe[1] = -1;
467 watch_init(&m->signal_watch);
468 watch_init(&m->mount_watch);
469 watch_init(&m->swap_watch);
470 watch_init(&m->udev_watch);
471 watch_init(&m->time_change_watch);
472 watch_init(&m->jobs_in_progress_watch);
474 m->epoll_fd = m->dev_autofs_fd = -1;
475 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
477 m->environment = strv_copy(environ);
481 manager_strip_environment(m);
483 if (running_as == SYSTEMD_SYSTEM) {
484 m->default_controllers = strv_new("cpu", NULL);
485 if (!m->default_controllers)
489 if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
492 if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
495 if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
498 if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
501 if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
504 m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
508 r = manager_setup_signals(m);
512 r = manager_setup_cgroup(m);
516 r = manager_setup_notify(m);
520 r = manager_setup_time_change(m);
524 /* Try to connect to the busses, if possible. */
525 r = bus_init(m, running_as != SYSTEMD_SYSTEM);
529 m->taint_usr = dir_is_empty("/usr") > 0;
539 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
545 while ((u = m->cleanup_queue)) {
546 assert(u->in_cleanup_queue);
556 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
557 GC_OFFSET_UNSURE, /* No clue */
558 GC_OFFSET_GOOD, /* We still need this unit */
559 GC_OFFSET_BAD, /* We don't need this unit anymore */
563 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
570 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
571 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
572 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
575 if (u->in_cleanup_queue)
578 if (unit_check_gc(u))
581 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
585 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
586 unit_gc_sweep(other, gc_marker);
588 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
591 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
598 /* We were unable to find anything out about this entry, so
599 * let's investigate it later */
600 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
601 unit_add_to_gc_queue(u);
605 /* We definitely know that this one is not useful anymore, so
606 * let's mark it for deletion */
607 u->gc_marker = gc_marker + GC_OFFSET_BAD;
608 unit_add_to_cleanup_queue(u);
612 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
615 static unsigned manager_dispatch_gc_queue(Manager *m) {
622 if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
623 (m->gc_queue_timestamp <= 0 ||
624 (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
627 log_debug("Running GC...");
629 m->gc_marker += _GC_OFFSET_MAX;
630 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
633 gc_marker = m->gc_marker;
635 while ((u = m->gc_queue)) {
636 assert(u->in_gc_queue);
638 unit_gc_sweep(u, gc_marker);
640 LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
641 u->in_gc_queue = false;
645 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
646 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
647 log_debug_unit(u->id, "Collecting %s", u->id);
648 u->gc_marker = gc_marker + GC_OFFSET_BAD;
649 unit_add_to_cleanup_queue(u);
653 m->n_in_gc_queue = 0;
654 m->gc_queue_timestamp = 0;
659 static void manager_clear_jobs_and_units(Manager *m) {
664 while ((u = hashmap_first(m->units)))
667 manager_dispatch_cleanup_queue(m);
669 assert(!m->load_queue);
670 assert(!m->run_queue);
671 assert(!m->dbus_unit_queue);
672 assert(!m->dbus_job_queue);
673 assert(!m->cleanup_queue);
674 assert(!m->gc_queue);
676 assert(hashmap_isempty(m->jobs));
677 assert(hashmap_isempty(m->units));
680 void manager_free(Manager *m) {
686 manager_clear_jobs_and_units(m);
688 for (c = 0; c < _UNIT_TYPE_MAX; c++)
689 if (unit_vtable[c]->shutdown)
690 unit_vtable[c]->shutdown(m);
692 /* If we reexecute ourselves, we keep the root cgroup
694 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
696 manager_undo_generators(m);
700 hashmap_free(m->units);
701 hashmap_free(m->jobs);
702 hashmap_free(m->watch_pids);
703 hashmap_free(m->watch_bus);
705 if (m->epoll_fd >= 0)
706 close_nointr_nofail(m->epoll_fd);
707 if (m->signal_watch.fd >= 0)
708 close_nointr_nofail(m->signal_watch.fd);
709 if (m->notify_watch.fd >= 0)
710 close_nointr_nofail(m->notify_watch.fd);
711 if (m->time_change_watch.fd >= 0)
712 close_nointr_nofail(m->time_change_watch.fd);
713 if (m->jobs_in_progress_watch.fd >= 0)
714 close_nointr_nofail(m->jobs_in_progress_watch.fd);
716 free(m->notify_socket);
718 lookup_paths_free(&m->lookup_paths);
719 strv_free(m->environment);
721 strv_free(m->default_controllers);
723 hashmap_free(m->cgroup_bondings);
724 set_free_free(m->unit_path_cache);
726 close_pipe(m->idle_pipe);
728 free(m->switch_root);
729 free(m->switch_root_init);
731 for (i = 0; i < RLIMIT_NLIMITS; i++)
737 int manager_enumerate(Manager *m) {
743 /* Let's ask every type to load all units from disk/kernel
744 * that it might know */
745 for (c = 0; c < _UNIT_TYPE_MAX; c++)
746 if (unit_vtable[c]->enumerate)
747 if ((q = unit_vtable[c]->enumerate(m)) < 0)
750 manager_dispatch_load_queue(m);
754 int manager_coldplug(Manager *m) {
762 /* Then, let's set up their initial state. */
763 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
769 if ((q = unit_coldplug(u)) < 0)
776 static void manager_build_unit_path_cache(Manager *m) {
778 DIR _cleanup_free_ *d = NULL;
783 set_free_free(m->unit_path_cache);
785 m->unit_path_cache = set_new(string_hash_func, string_compare_func);
786 if (!m->unit_path_cache) {
787 log_error("Failed to allocate unit path cache.");
791 /* This simply builds a list of files we know exist, so that
792 * we don't always have to go to disk */
794 STRV_FOREACH(i, m->lookup_paths.unit_path) {
800 log_error("Failed to open directory %s: %m", *i);
804 while ((de = readdir(d))) {
807 if (ignore_file(de->d_name))
810 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
816 r = set_put(m->unit_path_cache, p);
830 log_error("Failed to build unit path cache: %s", strerror(-r));
832 set_free_free(m->unit_path_cache);
833 m->unit_path_cache = NULL;
836 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
841 manager_run_generators(m);
843 r = lookup_paths_init(
844 &m->lookup_paths, m->running_as, true,
845 m->generator_unit_path,
846 m->generator_unit_path_early,
847 m->generator_unit_path_late);
851 manager_build_unit_path_cache(m);
853 /* If we will deserialize make sure that during enumeration
854 * this is already known, so we increase the counter here
859 /* First, enumerate what we can from all config files */
860 r = manager_enumerate(m);
862 /* Second, deserialize if there is something to deserialize */
864 q = manager_deserialize(m, serialization, fds);
869 /* Any fds left? Find some unit which wants them. This is
870 * useful to allow container managers to pass some file
871 * descriptors to us pre-initialized. This enables
872 * socket-based activation of entire containers. */
873 if (fdset_size(fds) > 0) {
874 q = manager_distribute_fds(m, fds);
879 /* Third, fire things up! */
880 q = manager_coldplug(m);
885 assert(m->n_reloading > 0);
892 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
897 assert(type < _JOB_TYPE_MAX);
899 assert(mode < _JOB_MODE_MAX);
901 if (mode == JOB_ISOLATE && type != JOB_START) {
902 dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
906 if (mode == JOB_ISOLATE && !unit->allow_isolate) {
907 dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
911 log_debug_unit(unit->id,
912 "Trying to enqueue job %s/%s/%s", unit->id,
913 job_type_to_string(type), job_mode_to_string(mode));
915 job_type_collapse(&type, unit);
917 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
921 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
922 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
923 mode == JOB_IGNORE_DEPENDENCIES, e);
927 if (mode == JOB_ISOLATE) {
928 r = transaction_add_isolate_jobs(tr, m);
933 r = transaction_activate(tr, m, mode, e);
937 log_debug_unit(unit->id,
938 "Enqueued job %s/%s as %u", unit->id,
939 job_type_to_string(type), (unsigned) tr->anchor_job->id);
942 *_ret = tr->anchor_job;
944 transaction_free(tr);
948 transaction_abort(tr);
949 transaction_free(tr);
953 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
958 assert(type < _JOB_TYPE_MAX);
960 assert(mode < _JOB_MODE_MAX);
962 r = manager_load_unit(m, name, NULL, NULL, &unit);
966 return manager_add_job(m, type, unit, mode, override, e, _ret);
969 Job *manager_get_job(Manager *m, uint32_t id) {
972 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
975 Unit *manager_get_unit(Manager *m, const char *name) {
979 return hashmap_get(m->units, name);
982 unsigned manager_dispatch_load_queue(Manager *m) {
988 /* Make sure we are not run recursively */
989 if (m->dispatching_load_queue)
992 m->dispatching_load_queue = true;
994 /* Dispatches the load queue. Takes a unit from the queue and
995 * tries to load its data until the queue is empty */
997 while ((u = m->load_queue)) {
998 assert(u->in_load_queue);
1004 m->dispatching_load_queue = false;
1008 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1014 assert(name || path);
1016 /* This will prepare the unit for loading, but not actually
1017 * load anything from disk. */
1019 if (path && !is_path(path)) {
1020 dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
1025 name = path_get_file_name(path);
1027 t = unit_name_to_type(name);
1029 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) {
1030 dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
1034 ret = manager_get_unit(m, name);
1040 ret = unit_new(m, unit_vtable[t]->object_size);
1045 ret->fragment_path = strdup(path);
1046 if (!ret->fragment_path) {
1052 if ((r = unit_add_name(ret, name)) < 0) {
1057 unit_add_to_load_queue(ret);
1058 unit_add_to_dbus_queue(ret);
1059 unit_add_to_gc_queue(ret);
1067 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
1072 /* This will load the service information files, but not actually
1073 * start any services or anything. */
1075 r = manager_load_unit_prepare(m, name, path, e, _ret);
1079 manager_dispatch_load_queue(m);
1082 *_ret = unit_follow_merge(*_ret);
1087 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1094 HASHMAP_FOREACH(j, s->jobs, i)
1095 job_dump(j, f, prefix);
1098 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1106 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1108 unit_dump(u, f, prefix);
1111 void manager_clear_jobs(Manager *m) {
1116 while ((j = hashmap_first(m->jobs)))
1117 /* No need to recurse. We're cancelling all jobs. */
1118 job_finish_and_invalidate(j, JOB_CANCELED, false);
1121 unsigned manager_dispatch_run_queue(Manager *m) {
1125 if (m->dispatching_run_queue)
1128 m->dispatching_run_queue = true;
1130 while ((j = m->run_queue)) {
1131 assert(j->installed);
1132 assert(j->in_run_queue);
1134 job_run_and_invalidate(j);
1138 m->dispatching_run_queue = false;
1140 if (hashmap_size(m->jobs) > 0)
1141 manager_watch_jobs_in_progress(m);
1146 unsigned manager_dispatch_dbus_queue(Manager *m) {
1153 if (m->dispatching_dbus_queue)
1156 m->dispatching_dbus_queue = true;
1158 while ((u = m->dbus_unit_queue)) {
1159 assert(u->in_dbus_queue);
1161 bus_unit_send_change_signal(u);
1165 while ((j = m->dbus_job_queue)) {
1166 assert(j->in_dbus_queue);
1168 bus_job_send_change_signal(j);
1172 m->dispatching_dbus_queue = false;
1176 static int manager_process_notify_fd(Manager *m) {
1183 struct msghdr msghdr;
1185 struct ucred *ucred;
1187 struct cmsghdr cmsghdr;
1188 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1194 iovec.iov_base = buf;
1195 iovec.iov_len = sizeof(buf)-1;
1199 msghdr.msg_iov = &iovec;
1200 msghdr.msg_iovlen = 1;
1201 msghdr.msg_control = &control;
1202 msghdr.msg_controllen = sizeof(control);
1204 n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT);
1209 if (errno == EAGAIN || errno == EINTR)
1215 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1216 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1217 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1218 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1219 log_warning("Received notify message without credentials. Ignoring.");
1223 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1225 u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
1227 u = cgroup_unit_by_pid(m, ucred->pid);
1229 log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
1234 assert((size_t) n < sizeof(buf));
1236 tags = strv_split(buf, "\n\r");
1240 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1242 if (UNIT_VTABLE(u)->notify_message)
1243 UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
1251 static int manager_dispatch_sigchld(Manager *m) {
1261 /* First we call waitd() for a PID and do not reap the
1262 * zombie. That way we can still access /proc/$PID for
1263 * it while it is a zombie. */
1264 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1266 if (errno == ECHILD)
1278 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1279 char _cleanup_free_ *name = NULL;
1281 get_process_comm(si.si_pid, &name);
1282 log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
1285 /* Let's flush any message the dying child might still
1286 * have queued for us. This ensures that the process
1287 * still exists in /proc so that we can figure out
1288 * which cgroup and hence unit it belongs to. */
1289 r = manager_process_notify_fd(m);
1293 /* And now figure out the unit this belongs to */
1294 u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
1296 u = cgroup_unit_by_pid(m, si.si_pid);
1298 /* And now, we actually reap the zombie. */
1299 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1306 if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
1309 log_debug("Child %lu died (code=%s, status=%i/%s)",
1310 (long unsigned) si.si_pid,
1311 sigchld_code_to_string(si.si_code),
1313 strna(si.si_code == CLD_EXITED
1314 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1315 : signal_to_string(si.si_status)));
1320 log_debug_unit(u->id,
1321 "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
1323 hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
1324 UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
1330 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1334 dbus_error_init(&error);
1336 log_debug_unit(name, "Activating special unit %s", name);
1338 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1340 log_error_unit(name,
1341 "Failed to enqueue %s job: %s", name, bus_error(&error, r));
1343 dbus_error_free(&error);
1348 static int manager_process_signal_fd(Manager *m) {
1350 struct signalfd_siginfo sfsi;
1351 bool sigchld = false;
1356 n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi));
1357 if (n != sizeof(sfsi)) {
1362 if (errno == EINTR || errno == EAGAIN)
1368 if (sfsi.ssi_pid > 0) {
1371 get_process_comm(sfsi.ssi_pid, &p);
1373 log_debug("Received SIG%s from PID %lu (%s).",
1374 signal_to_string(sfsi.ssi_signo),
1375 (unsigned long) sfsi.ssi_pid, strna(p));
1378 log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
1380 switch (sfsi.ssi_signo) {
1387 if (m->running_as == SYSTEMD_SYSTEM) {
1388 /* This is for compatibility with the
1389 * original sysvinit */
1390 m->exit_code = MANAGER_REEXECUTE;
1397 if (m->running_as == SYSTEMD_SYSTEM) {
1398 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
1402 /* Run the exit target if there is one, if not, just exit. */
1403 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1404 m->exit_code = MANAGER_EXIT;
1411 if (m->running_as == SYSTEMD_SYSTEM)
1412 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1414 /* This is a nop on non-init */
1418 if (m->running_as == SYSTEMD_SYSTEM)
1419 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1421 /* This is a nop on non-init */
1427 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1429 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1430 log_info("Trying to reconnect to bus...");
1434 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1435 log_info("Loading D-Bus service...");
1436 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1447 if (!(f = open_memstream(&dump, &size))) {
1448 log_warning("Failed to allocate memory stream.");
1452 manager_dump_units(m, f, "\t");
1453 manager_dump_jobs(m, f, "\t");
1458 log_warning("Failed to write status stream");
1463 log_dump(LOG_INFO, dump);
1470 m->exit_code = MANAGER_RELOAD;
1475 /* Starting SIGRTMIN+0 */
1476 static const char * const target_table[] = {
1477 [0] = SPECIAL_DEFAULT_TARGET,
1478 [1] = SPECIAL_RESCUE_TARGET,
1479 [2] = SPECIAL_EMERGENCY_TARGET,
1480 [3] = SPECIAL_HALT_TARGET,
1481 [4] = SPECIAL_POWEROFF_TARGET,
1482 [5] = SPECIAL_REBOOT_TARGET,
1483 [6] = SPECIAL_KEXEC_TARGET
1486 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1487 static const ManagerExitCode code_table[] = {
1489 [1] = MANAGER_POWEROFF,
1490 [2] = MANAGER_REBOOT,
1494 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1495 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1496 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1497 manager_start_target(m, target_table[idx],
1498 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1502 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1503 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1504 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1508 switch (sfsi.ssi_signo - SIGRTMIN) {
1511 log_debug("Enabling showing of status.");
1512 manager_set_show_status(m, true);
1516 log_debug("Disabling showing of status.");
1517 manager_set_show_status(m, false);
1521 log_set_max_level(LOG_DEBUG);
1522 log_notice("Setting log level to debug.");
1526 log_set_max_level(LOG_INFO);
1527 log_notice("Setting log level to info.");
1531 if (m->running_as == SYSTEMD_USER) {
1532 m->exit_code = MANAGER_EXIT;
1536 /* This is a nop on init */
1540 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1541 log_notice("Setting log target to journal-or-kmsg.");
1545 log_set_target(LOG_TARGET_CONSOLE);
1546 log_notice("Setting log target to console.");
1550 log_set_target(LOG_TARGET_KMSG);
1551 log_notice("Setting log target to kmsg.");
1555 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1556 log_notice("Setting log target to syslog-or-kmsg.");
1560 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1567 return manager_dispatch_sigchld(m);
1572 static int process_event(Manager *m, struct epoll_event *ev) {
1579 assert_se(w = ev->data.ptr);
1581 if (w->type == WATCH_INVALID)
1588 /* An incoming signal? */
1589 if (ev->events != EPOLLIN)
1592 if ((r = manager_process_signal_fd(m)) < 0)
1599 /* An incoming daemon notification event? */
1600 if (ev->events != EPOLLIN)
1603 if ((r = manager_process_notify_fd(m)) < 0)
1610 /* Some fd event, to be dispatched to the units */
1611 UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
1614 case WATCH_UNIT_TIMER:
1615 case WATCH_JOB_TIMER: {
1619 /* Some timer event, to be dispatched to the units */
1620 k = read(w->fd, &v, sizeof(v));
1621 if (k != sizeof(v)) {
1623 if (k < 0 && (errno == EINTR || errno == EAGAIN))
1626 log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read");
1627 return k < 0 ? -errno : -EIO;
1630 if (w->type == WATCH_UNIT_TIMER)
1631 UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
1633 job_timer_event(w->data.job, v, w);
1638 /* Some mount table change, intended for the mount subsystem */
1639 mount_fd_event(m, ev->events);
1643 /* Some swap table change, intended for the swap subsystem */
1644 swap_fd_event(m, ev->events);
1648 /* Some notification from udev, intended for the device subsystem */
1649 device_fd_event(m, ev->events);
1652 case WATCH_DBUS_WATCH:
1653 bus_watch_event(m, w, ev->events);
1656 case WATCH_DBUS_TIMEOUT:
1657 bus_timeout_event(m, w, ev->events);
1660 case WATCH_TIME_CHANGE: {
1664 log_struct(LOG_INFO,
1665 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1666 "MESSAGE=Time has been changed",
1669 /* Restart the watch */
1670 close_nointr_nofail(m->time_change_watch.fd);
1671 watch_init(&m->time_change_watch);
1672 manager_setup_time_change(m);
1674 HASHMAP_FOREACH(u, m->units, i) {
1675 if (UNIT_VTABLE(u)->time_change)
1676 UNIT_VTABLE(u)->time_change(u);
1682 case WATCH_JOBS_IN_PROGRESS: {
1685 /* not interested in the data */
1686 read(w->fd, &v, sizeof(v));
1688 manager_print_jobs_in_progress(m);
1693 log_error("event type=%i", w->type);
1694 assert_not_reached("Unknown epoll event type.");
1700 int manager_loop(Manager *m) {
1703 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1706 m->exit_code = MANAGER_RUNNING;
1708 /* Release the path cache */
1709 set_free_free(m->unit_path_cache);
1710 m->unit_path_cache = NULL;
1712 manager_check_finished(m);
1714 /* There might still be some zombies hanging around from
1715 * before we were exec()'ed. Leat's reap them */
1716 r = manager_dispatch_sigchld(m);
1720 while (m->exit_code == MANAGER_RUNNING) {
1721 struct epoll_event event;
1725 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1728 if (!ratelimit_test(&rl)) {
1729 /* Yay, something is going seriously wrong, pause a little */
1730 log_warning("Looping too fast. Throttling execution a little.");
1735 if (manager_dispatch_load_queue(m) > 0)
1738 if (manager_dispatch_run_queue(m) > 0)
1741 if (bus_dispatch(m) > 0)
1744 if (manager_dispatch_cleanup_queue(m) > 0)
1747 if (manager_dispatch_gc_queue(m) > 0)
1750 if (manager_dispatch_dbus_queue(m) > 0)
1753 if (swap_dispatch_reload(m) > 0)
1756 /* Sleep for half the watchdog time */
1757 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1758 wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
1764 n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
1776 r = process_event(m, &event);
1781 return m->exit_code;
1784 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) {
1793 if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
1796 n = bus_path_unescape(s+31);
1800 r = manager_load_unit(m, n, NULL, e, &u);
1811 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
1820 if (!startswith(s, "/org/freedesktop/systemd1/job/"))
1823 r = safe_atou(s + 30, &id);
1827 j = manager_get_job(m, id);
1836 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
1842 audit_fd = get_audit_fd();
1846 /* Don't generate audit events if the service was already
1847 * started and we're just deserializing */
1848 if (m->n_reloading > 0)
1851 if (m->running_as != SYSTEMD_SYSTEM)
1854 if (u->type != UNIT_SERVICE)
1857 p = unit_name_to_prefix_and_instance(u->id);
1859 log_error_unit(u->id,
1860 "Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
1864 if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
1865 if (errno == EPERM) {
1866 /* We aren't allowed to send audit messages?
1867 * Then let's not retry again. */
1870 log_warning("Failed to send audit message: %m");
1878 void manager_send_unit_plymouth(Manager *m, Unit *u) {
1880 union sockaddr_union sa;
1882 char *message = NULL;
1884 /* Don't generate plymouth events if the service was already
1885 * started and we're just deserializing */
1886 if (m->n_reloading > 0)
1889 if (m->running_as != SYSTEMD_SYSTEM)
1892 if (u->type != UNIT_SERVICE &&
1893 u->type != UNIT_MOUNT &&
1894 u->type != UNIT_SWAP)
1897 /* We set SOCK_NONBLOCK here so that we rather drop the
1898 * message then wait for plymouth */
1899 if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
1900 log_error("socket() failed: %m");
1905 sa.sa.sa_family = AF_UNIX;
1906 strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
1907 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
1909 if (errno != EPIPE &&
1912 errno != ECONNREFUSED &&
1913 errno != ECONNRESET &&
1914 errno != ECONNABORTED)
1915 log_error("connect() failed: %m");
1920 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
1926 if (write(fd, message, n + 1) != n + 1) {
1928 if (errno != EPIPE &&
1931 errno != ECONNREFUSED &&
1932 errno != ECONNRESET &&
1933 errno != ECONNABORTED)
1934 log_error("Failed to write Plymouth message: %m");
1941 close_nointr_nofail(fd);
1946 void manager_dispatch_bus_name_owner_changed(
1949 const char* old_owner,
1950 const char *new_owner) {
1957 if (!(u = hashmap_get(m->watch_bus, name)))
1960 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
1963 void manager_dispatch_bus_query_pid_done(
1974 if (!(u = hashmap_get(m->watch_bus, name)))
1977 UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
1980 int manager_open_serialization(Manager *m, FILE **_f) {
1988 if (m->running_as == SYSTEMD_SYSTEM)
1989 asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
1991 asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
1996 saved_umask = umask(0077);
1997 fd = mkostemp(path, O_RDWR|O_CLOEXEC);
2007 log_debug("Serializing state to %s", path);
2010 f = fdopen(fd, "w+");
2019 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) {
2032 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2033 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2034 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2035 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2037 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2038 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2039 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2040 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2043 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2044 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2047 STRV_FOREACH(e, m->environment) {
2048 _cleanup_free_ char *ce;
2052 fprintf(f, "env=%s\n", *e);
2057 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2061 if (!unit_can_serialize(u))
2068 if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) {
2074 assert(m->n_reloading > 0);
2080 r = bus_fdset_add_all(m, fds);
2087 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2093 log_debug("Deserializing state...");
2098 char line[LINE_MAX], *l;
2100 if (!fgets(line, sizeof(line), f)) {
2115 if (startswith(l, "current-job-id=")) {
2118 if (safe_atou32(l+15, &id) < 0)
2119 log_debug("Failed to parse current job id value %s", l+15);
2121 m->current_job_id = MAX(m->current_job_id, id);
2122 } else if (startswith(l, "n-installed-jobs=")) {
2125 if (safe_atou32(l+17, &n) < 0)
2126 log_debug("Failed to parse installed jobs counter %s", l+17);
2128 m->n_installed_jobs += n;
2129 } else if (startswith(l, "n-failed-jobs=")) {
2132 if (safe_atou32(l+14, &n) < 0)
2133 log_debug("Failed to parse failed jobs counter %s", l+14);
2135 m->n_failed_jobs += n;
2136 } else if (startswith(l, "taint-usr=")) {
2139 if ((b = parse_boolean(l+10)) < 0)
2140 log_debug("Failed to parse taint /usr flag %s", l+10);
2142 m->taint_usr = m->taint_usr || b;
2143 } else if (startswith(l, "firmware-timestamp="))
2144 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2145 else if (startswith(l, "loader-timestamp="))
2146 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2147 else if (startswith(l, "kernel-timestamp="))
2148 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2149 else if (startswith(l, "initrd-timestamp="))
2150 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2151 else if (startswith(l, "userspace-timestamp="))
2152 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2153 else if (startswith(l, "finish-timestamp="))
2154 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2155 else if (startswith(l, "env=")) {
2156 _cleanup_free_ char *uce = NULL;
2159 uce = cunescape(l+4);
2165 e = strv_env_set(m->environment, uce);
2171 strv_free(m->environment);
2174 log_debug("Unknown serialization item '%s'", l);
2179 char name[UNIT_NAME_MAX+2];
2182 if (!fgets(name, sizeof(name), f)) {
2193 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2197 r = unit_deserialize(u, f, fds);
2208 assert(m->n_reloading > 0);
2214 int manager_distribute_fds(Manager *m, FDSet *fds) {
2221 HASHMAP_FOREACH(u, m->units, i) {
2223 if (fdset_size(fds) <= 0)
2226 if (UNIT_VTABLE(u)->distribute_fds) {
2227 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
2236 int manager_reload(Manager *m) {
2243 r = manager_open_serialization(m, &f);
2256 r = manager_serialize(m, f, fds, true);
2262 if (fseeko(f, 0, SEEK_SET) < 0) {
2268 /* From here on there is no way back. */
2269 manager_clear_jobs_and_units(m);
2270 manager_undo_generators(m);
2271 lookup_paths_free(&m->lookup_paths);
2273 /* Find new unit paths */
2274 manager_run_generators(m);
2276 q = lookup_paths_init(
2277 &m->lookup_paths, m->running_as, true,
2278 m->generator_unit_path,
2279 m->generator_unit_path_early,
2280 m->generator_unit_path_late);
2284 manager_build_unit_path_cache(m);
2286 /* First, enumerate what we can from all config files */
2287 q = manager_enumerate(m);
2291 /* Second, deserialize our stored data */
2292 q = manager_deserialize(m, f, fds);
2299 /* Third, fire things up! */
2300 q = manager_coldplug(m);
2304 assert(m->n_reloading > 0);
2317 static bool manager_is_booting_or_shutting_down(Manager *m) {
2322 /* Is the initial job still around? */
2323 if (manager_get_job(m, m->default_unit_job_id))
2326 /* Is there a job for the shutdown target? */
2327 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
2334 void manager_reset_failed(Manager *m) {
2340 HASHMAP_FOREACH(u, m->units, i)
2341 unit_reset_failed(u);
2344 bool manager_unit_pending_inactive(Manager *m, const char *name) {
2350 /* Returns true if the unit is inactive or going down */
2351 u = manager_get_unit(m, name);
2355 return unit_pending_inactive(u);
2358 void manager_check_finished(Manager *m) {
2359 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2360 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2364 if (hashmap_size(m->jobs) > 0) {
2365 manager_jobs_in_progress_mod_timer(m);
2369 /* Notify Type=idle units that we are done now */
2370 close_pipe(m->idle_pipe);
2372 /* Turn off confirm spawn now */
2373 m->confirm_spawn = false;
2375 manager_unwatch_jobs_in_progress(m);
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),
2407 format_timespan(initrd, sizeof(initrd), initrd_usec),
2408 format_timespan(userspace, sizeof(userspace), userspace_usec),
2409 format_timespan(sum, sizeof(sum), total_usec),
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),
2422 format_timespan(userspace, sizeof(userspace), userspace_usec),
2423 format_timespan(sum, sizeof(sum), total_usec),
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),
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));
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);
2477 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];
2511 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2512 d = opendir(generator_path);
2514 if (errno == ENOENT)
2517 log_error("Failed to enumerate generator directory %s: %m",
2522 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2526 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2530 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2534 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2535 argv[1] = m->generator_unit_path;
2536 argv[2] = m->generator_unit_path_early;
2537 argv[3] = m->generator_unit_path_late;
2541 execute_directory(generator_path, d, (char**) argv);
2544 trim_generator_dir(m, &m->generator_unit_path);
2545 trim_generator_dir(m, &m->generator_unit_path_early);
2546 trim_generator_dir(m, &m->generator_unit_path_late);
2553 static void remove_generator_dir(Manager *m, char **generator) {
2560 strv_remove(m->lookup_paths.unit_path, *generator);
2561 rm_rf(*generator, false, true, false);
2567 void manager_undo_generators(Manager *m) {
2570 remove_generator_dir(m, &m->generator_unit_path);
2571 remove_generator_dir(m, &m->generator_unit_path_early);
2572 remove_generator_dir(m, &m->generator_unit_path_late);
2575 int manager_set_default_controllers(Manager *m, char **controllers) {
2580 l = strv_copy(controllers);
2584 strv_free(m->default_controllers);
2585 m->default_controllers = l;
2587 cg_shorten_controllers(m->default_controllers);
2592 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2597 for (i = 0; i < RLIMIT_NLIMITS; i++) {
2598 if (!default_rlimit[i])
2601 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2609 void manager_recheck_journal(Manager *m) {
2614 if (m->running_as != SYSTEMD_SYSTEM)
2617 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2618 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2619 log_close_journal();
2623 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2624 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2625 log_close_journal();
2629 /* Hmm, OK, so the socket is fully up and the service is up
2630 * too, then let's make use of the thing. */
2634 void manager_set_show_status(Manager *m, bool b) {
2637 if (m->running_as != SYSTEMD_SYSTEM)
2643 touch("/run/systemd/show-status");
2645 unlink("/run/systemd/show-status");
2648 static bool manager_get_show_status(Manager *m) {
2651 if (m->running_as != SYSTEMD_SYSTEM)
2657 /* If Plymouth is running make sure we show the status, so
2658 * that there's something nice to see when people press Esc */
2660 return plymouth_running();
2663 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
2666 if (!manager_get_show_status(m))
2669 /* XXX We should totally drop the check for ephemeral here
2670 * and thus effectively make 'Type=idle' pointless. */
2671 if (ephemeral && m->n_on_console > 0)
2674 if (!manager_is_booting_or_shutting_down(m))
2677 va_start(ap, format);
2678 status_vprintf(status, true, ephemeral, format, ap);
2682 void watch_init(Watch *w) {
2685 w->type = WATCH_INVALID;