1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 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/>.
28 #include "sd-daemon.h"
30 #include "conf-parser.h"
32 #include "bus-error.h"
34 #include "udev-util.h"
35 #include "formats-util.h"
40 static void manager_free(Manager *m);
42 static Manager *manager_new(void) {
50 m->pin_cgroupfs_fd = -1;
52 m->console_active_fd = -1;
53 m->reserve_vt_fd = -1;
58 m->inhibit_delay_max = 5 * USEC_PER_SEC;
59 m->handle_power_key = HANDLE_POWEROFF;
60 m->handle_suspend_key = HANDLE_SUSPEND;
61 m->handle_hibernate_key = HANDLE_HIBERNATE;
62 m->handle_lid_switch = HANDLE_SUSPEND;
63 m->handle_lid_switch_docked = HANDLE_IGNORE;
64 m->lid_switch_ignore_inhibited = true;
65 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
67 m->idle_action_usec = 30 * USEC_PER_MINUTE;
68 m->idle_action = HANDLE_IGNORE;
69 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
71 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
73 m->devices = hashmap_new(&string_hash_ops);
74 m->seats = hashmap_new(&string_hash_ops);
75 m->sessions = hashmap_new(&string_hash_ops);
76 m->users = hashmap_new(NULL);
77 m->inhibitors = hashmap_new(&string_hash_ops);
78 m->buttons = hashmap_new(&string_hash_ops);
80 m->user_units = hashmap_new(&string_hash_ops);
81 m->session_units = hashmap_new(&string_hash_ops);
83 m->running_as = MANAGER_SYSTEM;
86 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
89 m->kill_exclude_users = strv_new("root", NULL);
90 if (!m->kill_exclude_users)
94 r = manager_setup_cgroup(m);
102 r = sd_event_default(&m->event);
106 sd_event_set_watchdog(m->event, true);
115 static void manager_free(Manager *m) {
125 while ((session = hashmap_first(m->sessions)))
126 session_free(session);
128 while ((u = hashmap_first(m->users)))
131 while ((d = hashmap_first(m->devices)))
134 while ((s = hashmap_first(m->seats)))
137 while ((i = hashmap_first(m->inhibitors)))
140 while ((b = hashmap_first(m->buttons)))
143 hashmap_free(m->devices);
144 hashmap_free(m->seats);
145 hashmap_free(m->sessions);
146 hashmap_free(m->users);
147 hashmap_free(m->inhibitors);
148 hashmap_free(m->buttons);
150 hashmap_free(m->user_units);
151 hashmap_free(m->session_units);
153 sd_event_source_unref(m->idle_action_event_source);
154 sd_event_source_unref(m->inhibit_timeout_source);
155 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
156 sd_event_source_unref(m->nologin_timeout_source);
157 sd_event_source_unref(m->wall_message_timeout_source);
159 sd_event_source_unref(m->console_active_event_source);
160 sd_event_source_unref(m->udev_seat_event_source);
161 sd_event_source_unref(m->udev_device_event_source);
162 sd_event_source_unref(m->udev_vcsa_event_source);
163 sd_event_source_unref(m->udev_button_event_source);
164 sd_event_source_unref(m->lid_switch_ignore_event_source);
166 safe_close(m->console_active_fd);
168 udev_monitor_unref(m->udev_seat_monitor);
169 udev_monitor_unref(m->udev_device_monitor);
170 udev_monitor_unref(m->udev_vcsa_monitor);
171 udev_monitor_unref(m->udev_button_monitor);
175 if (m->unlink_nologin)
176 unlink("/run/nologin");
178 bus_verify_polkit_async_registry_free(m->polkit_registry);
180 sd_bus_unref(m->bus);
181 sd_event_unref(m->event);
183 safe_close(m->reserve_vt_fd);
185 manager_shutdown_cgroup(m, true);
187 strv_free(m->kill_only_users);
188 strv_free(m->kill_exclude_users);
190 free(m->scheduled_shutdown_type);
191 free(m->scheduled_shutdown_tty);
192 free(m->wall_message);
197 static int manager_enumerate_devices(Manager *m) {
198 struct udev_list_entry *item = NULL, *first = NULL;
199 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
204 /* Loads devices from udev and creates seats for them as
207 e = udev_enumerate_new(m->udev);
211 r = udev_enumerate_add_match_tag(e, "master-of-seat");
215 r = udev_enumerate_add_match_is_initialized(e);
219 r = udev_enumerate_scan_devices(e);
223 first = udev_enumerate_get_list_entry(e);
224 udev_list_entry_foreach(item, first) {
225 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
228 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
232 k = manager_process_seat_device(m, d);
240 static int manager_enumerate_buttons(Manager *m) {
241 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
242 struct udev_list_entry *item = NULL, *first = NULL;
247 /* Loads buttons from udev */
249 if (m->handle_power_key == HANDLE_IGNORE &&
250 m->handle_suspend_key == HANDLE_IGNORE &&
251 m->handle_hibernate_key == HANDLE_IGNORE &&
252 m->handle_lid_switch == HANDLE_IGNORE &&
253 m->handle_lid_switch_docked == HANDLE_IGNORE)
256 e = udev_enumerate_new(m->udev);
260 r = udev_enumerate_add_match_subsystem(e, "input");
264 r = udev_enumerate_add_match_tag(e, "power-switch");
268 r = udev_enumerate_add_match_is_initialized(e);
272 r = udev_enumerate_scan_devices(e);
276 first = udev_enumerate_get_list_entry(e);
277 udev_list_entry_foreach(item, first) {
278 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
281 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
285 k = manager_process_button_device(m, d);
293 static int manager_enumerate_seats(Manager *m) {
294 _cleanup_closedir_ DIR *d = NULL;
300 /* This loads data about seats stored on disk, but does not
301 * actually create any seats. Removes data of seats that no
304 d = opendir("/run/systemd/seats");
309 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
313 FOREACH_DIRENT(de, d, return -errno) {
317 if (!dirent_is_file(de))
320 s = hashmap_get(m->seats, de->d_name);
322 unlinkat(dirfd(d), de->d_name, 0);
334 static int manager_enumerate_linger_users(Manager *m) {
335 _cleanup_closedir_ DIR *d = NULL;
341 d = opendir("/var/lib/systemd/linger");
346 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
350 FOREACH_DIRENT(de, d, return -errno) {
353 if (!dirent_is_file(de))
356 k = manager_add_user_by_name(m, de->d_name, NULL);
358 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
366 static int manager_enumerate_users(Manager *m) {
367 _cleanup_closedir_ DIR *d = NULL;
373 /* Add lingering users */
374 r = manager_enumerate_linger_users(m);
376 /* Read in user data stored on disk */
377 d = opendir("/run/systemd/users");
382 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
386 FOREACH_DIRENT(de, d, return -errno) {
389 if (!dirent_is_file(de))
392 k = manager_add_user_by_name(m, de->d_name, &u);
394 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
400 user_add_to_gc_queue(u);
410 static int manager_enumerate_sessions(Manager *m) {
411 _cleanup_closedir_ DIR *d = NULL;
417 /* Read in session data stored on disk */
418 d = opendir("/run/systemd/sessions");
423 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
427 FOREACH_DIRENT(de, d, return -errno) {
431 if (!dirent_is_file(de))
434 if (!session_id_valid(de->d_name)) {
435 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
440 k = manager_add_session(m, de->d_name, &s);
442 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
448 session_add_to_gc_queue(s);
458 static int manager_enumerate_inhibitors(Manager *m) {
459 _cleanup_closedir_ DIR *d = NULL;
465 d = opendir("/run/systemd/inhibit");
470 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
474 FOREACH_DIRENT(de, d, return -errno) {
478 if (!dirent_is_file(de))
481 k = manager_add_inhibitor(m, de->d_name, &i);
483 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
488 k = inhibitor_load(i);
496 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
497 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
498 Manager *m = userdata;
502 d = udev_monitor_receive_device(m->udev_seat_monitor);
506 manager_process_seat_device(m, d);
510 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
511 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
512 Manager *m = userdata;
516 d = udev_monitor_receive_device(m->udev_device_monitor);
520 manager_process_seat_device(m, d);
524 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
525 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
526 Manager *m = userdata;
531 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
535 name = udev_device_get_sysname(d);
537 /* Whenever a VCSA device is removed try to reallocate our
538 * VTs, to make sure our auto VTs never go away. */
540 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
541 seat_preallocate_vts(m->seat0);
546 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
547 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
548 Manager *m = userdata;
552 d = udev_monitor_receive_device(m->udev_button_monitor);
556 manager_process_button_device(m, d);
560 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
561 Manager *m = userdata;
565 assert(m->console_active_fd == fd);
567 seat_read_active_vt(m->seat0);
571 static int manager_reserve_vt(Manager *m) {
572 _cleanup_free_ char *p = NULL;
576 if (m->reserve_vt <= 0)
579 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
582 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
583 if (m->reserve_vt_fd < 0) {
585 /* Don't complain on VT-less systems */
587 log_warning_errno(errno, "Failed to pin reserved VT: %m");
594 static int manager_connect_bus(Manager *m) {
595 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
601 r = sd_bus_default_system(&m->bus);
603 return log_error_errno(r, "Failed to connect to system bus: %m");
605 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
607 return log_error_errno(r, "Failed to add manager object vtable: %m");
609 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
611 return log_error_errno(r, "Failed to add seat object vtable: %m");
613 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
615 return log_error_errno(r, "Failed to add seat enumerator: %m");
617 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
619 return log_error_errno(r, "Failed to add session object vtable: %m");
621 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
623 return log_error_errno(r, "Failed to add session enumerator: %m");
625 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
627 return log_error_errno(r, "Failed to add user object vtable: %m");
629 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
631 return log_error_errno(r, "Failed to add user enumerator: %m");
633 r = sd_bus_add_match(m->bus,
636 "sender='org.freedesktop.systemd1',"
637 "interface='org.freedesktop.systemd1.Manager',"
638 "member='JobRemoved',"
639 "path='/org/freedesktop/systemd1'",
640 match_job_removed, m);
642 log_warning_errno(r, "Failed to add match for JobRemoved: %m");
644 r = sd_bus_add_match(m->bus,
647 "sender='org.freedesktop.systemd1',"
648 "interface='org.freedesktop.systemd1.Manager',"
649 "member='UnitRemoved',"
650 "path='/org/freedesktop/systemd1'",
651 match_unit_removed, m);
653 log_warning_errno(r, "Failed to add match for UnitRemoved: %m");
655 r = sd_bus_add_match(m->bus,
658 "sender='org.freedesktop.systemd1',"
659 "interface='org.freedesktop.DBus.Properties',"
660 "member='PropertiesChanged'",
661 match_properties_changed, m);
663 log_warning_errno(r, "Failed to add match for PropertiesChanged: %m");
665 r = sd_bus_add_match(m->bus,
668 "sender='org.freedesktop.systemd1',"
669 "interface='org.freedesktop.systemd1.Manager',"
670 "member='Reloading',"
671 "path='/org/freedesktop/systemd1'",
674 log_warning_errno(r, "Failed to add match for Reloading: %m");
676 r = sd_bus_call_method(
678 "org.freedesktop.systemd1",
679 "/org/freedesktop/systemd1",
680 "org.freedesktop.systemd1.Manager",
685 log_notice("Failed to enable subscription: %s", bus_error_message(&error, r));
687 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
689 return log_error_errno(r, "Failed to register name: %m");
691 r = sd_bus_attach_event(m->bus, m->event, 0);
693 return log_error_errno(r, "Failed to attach bus to event loop: %m");
698 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
700 Session *active, *iter;
703 * We got a VT-switch signal and we have to acknowledge it immediately.
704 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
705 * old user-space might run multiple sessions on a single VT, *sigh*.
706 * Therefore, we have to iterate all sessions and find one with a vtfd
707 * on the requested VT.
708 * As only VTs with active controllers have VT_PROCESS set, our current
709 * notion of the active VT might be wrong (for instance if the switch
710 * happens while we setup VT_PROCESS). Therefore, read the current VT
711 * first and then use s->active->vtnr as reference. Note that this is
712 * not racy, as no further VT-switch can happen as long as we're in
713 * synchronous VT_PROCESS mode.
717 seat_read_active_vt(m->seat0);
719 active = m->seat0->active;
720 if (!active || active->vtnr < 1) {
721 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
725 if (active->vtfd >= 0) {
726 session_leave_vt(active);
728 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
729 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
730 session_leave_vt(iter);
739 static int manager_connect_console(Manager *m) {
743 assert(m->console_active_fd < 0);
745 /* On certain architectures (S390 and Xen, and containers),
746 /dev/tty0 does not exist, so don't fail if we can't open
748 if (access("/dev/tty0", F_OK) < 0)
751 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
752 if (m->console_active_fd < 0) {
754 /* On some systems the device node /dev/tty0 may exist
755 * even though /sys/class/tty/tty0 does not. */
759 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
763 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
765 log_error("Failed to watch foreground console");
770 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
771 * as VT-acquire signal. We ignore any acquire-events (yes, we still
772 * have to provide a valid signal-number for it!) and acknowledge all
773 * release events immediately.
776 if (SIGRTMIN + 1 > SIGRTMAX) {
777 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
781 r = ignore_signals(SIGRTMIN + 1, -1);
783 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
785 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
787 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
789 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
796 static int manager_connect_udev(Manager *m) {
800 assert(!m->udev_seat_monitor);
801 assert(!m->udev_device_monitor);
802 assert(!m->udev_vcsa_monitor);
803 assert(!m->udev_button_monitor);
805 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
806 if (!m->udev_seat_monitor)
809 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
813 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
817 r = sd_event_add_io(m->event, &m->udev_seat_event_source, udev_monitor_get_fd(m->udev_seat_monitor), EPOLLIN, manager_dispatch_seat_udev, m);
821 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
822 if (!m->udev_device_monitor)
825 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
829 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
833 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
837 r = udev_monitor_enable_receiving(m->udev_device_monitor);
841 r = sd_event_add_io(m->event, &m->udev_device_event_source, udev_monitor_get_fd(m->udev_device_monitor), EPOLLIN, manager_dispatch_device_udev, m);
845 /* Don't watch keys if nobody cares */
846 if (m->handle_power_key != HANDLE_IGNORE ||
847 m->handle_suspend_key != HANDLE_IGNORE ||
848 m->handle_hibernate_key != HANDLE_IGNORE ||
849 m->handle_lid_switch != HANDLE_IGNORE ||
850 m->handle_lid_switch_docked != HANDLE_IGNORE) {
852 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
853 if (!m->udev_button_monitor)
856 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
860 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
864 r = udev_monitor_enable_receiving(m->udev_button_monitor);
868 r = sd_event_add_io(m->event, &m->udev_button_event_source, udev_monitor_get_fd(m->udev_button_monitor), EPOLLIN, manager_dispatch_button_udev, m);
873 /* Don't bother watching VCSA devices, if nobody cares */
874 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
876 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
877 if (!m->udev_vcsa_monitor)
880 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
884 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
888 r = sd_event_add_io(m->event, &m->udev_vcsa_event_source, udev_monitor_get_fd(m->udev_vcsa_monitor), EPOLLIN, manager_dispatch_vcsa_udev, m);
896 static void manager_gc(Manager *m, bool drop_not_started) {
903 while ((seat = m->seat_gc_queue)) {
904 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
905 seat->in_gc_queue = false;
907 if (!seat_check_gc(seat, drop_not_started)) {
908 seat_stop(seat, false);
913 while ((session = m->session_gc_queue)) {
914 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
915 session->in_gc_queue = false;
917 /* First, if we are not closing yet, initiate stopping */
918 if (!session_check_gc(session, drop_not_started) &&
919 session_get_state(session) != SESSION_CLOSING)
920 session_stop(session, false);
922 /* Normally, this should make the session referenced
923 * again, if it doesn't then let's get rid of it
925 if (!session_check_gc(session, drop_not_started)) {
926 session_finalize(session);
927 session_free(session);
931 while ((user = m->user_gc_queue)) {
932 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
933 user->in_gc_queue = false;
935 /* First step: queue stop jobs */
936 if (!user_check_gc(user, drop_not_started))
937 user_stop(user, false);
939 /* Second step: finalize user */
940 if (!user_check_gc(user, drop_not_started)) {
947 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
948 Manager *m = userdata;
949 struct dual_timestamp since;
955 if (m->idle_action == HANDLE_IGNORE ||
956 m->idle_action_usec <= 0)
959 n = now(CLOCK_MONOTONIC);
961 r = manager_get_idle_hint(m, &since);
963 /* Not idle. Let's check if after a timeout it might be idle then. */
964 elapse = n + m->idle_action_usec;
966 /* Idle! Let's see if it's time to do something, or if
967 * we shall sleep for longer. */
969 if (n >= since.monotonic + m->idle_action_usec &&
970 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
971 log_info("System idle. Taking action.");
973 manager_handle_action(m, 0, m->idle_action, false, false);
974 m->idle_action_not_before_usec = n;
977 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
980 if (!m->idle_action_event_source) {
982 r = sd_event_add_time(
984 &m->idle_action_event_source,
986 elapse, USEC_PER_SEC*30,
987 manager_dispatch_idle_action, m);
989 return log_error_errno(r, "Failed to add idle event source: %m");
991 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
993 return log_error_errno(r, "Failed to set idle event source priority: %m");
995 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
997 return log_error_errno(r, "Failed to set idle event timer: %m");
999 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1001 return log_error_errno(r, "Failed to enable idle event timer: %m");
1007 static int manager_startup(Manager *m) {
1013 Inhibitor *inhibitor;
1018 /* Connect to console */
1019 r = manager_connect_console(m);
1023 /* Connect to udev */
1024 r = manager_connect_udev(m);
1026 return log_error_errno(r, "Failed to create udev watchers: %m");
1028 /* Connect to the bus */
1029 r = manager_connect_bus(m);
1033 /* Instantiate magic seat 0 */
1034 r = manager_add_seat(m, "seat0", &m->seat0);
1036 return log_error_errno(r, "Failed to add seat0: %m");
1038 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1040 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1042 /* Deserialize state */
1043 r = manager_enumerate_devices(m);
1045 log_warning_errno(r, "Device enumeration failed: %m");
1047 r = manager_enumerate_seats(m);
1049 log_warning_errno(r, "Seat enumeration failed: %m");
1051 r = manager_enumerate_users(m);
1053 log_warning_errno(r, "User enumeration failed: %m");
1055 r = manager_enumerate_sessions(m);
1057 log_warning_errno(r, "Session enumeration failed: %m");
1059 r = manager_enumerate_inhibitors(m);
1061 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1063 r = manager_enumerate_buttons(m);
1065 log_warning_errno(r, "Button enumeration failed: %m");
1067 /* Remove stale objects before we start them */
1068 manager_gc(m, false);
1070 /* Reserve the special reserved VT */
1071 manager_reserve_vt(m);
1073 /* And start everything */
1074 HASHMAP_FOREACH(seat, m->seats, i)
1077 HASHMAP_FOREACH(user, m->users, i)
1080 HASHMAP_FOREACH(session, m->sessions, i)
1081 session_start(session);
1083 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1084 inhibitor_start(inhibitor);
1086 HASHMAP_FOREACH(button, m->buttons, i)
1087 button_check_switches(button);
1089 manager_dispatch_idle_action(NULL, 0, m);
1094 static int manager_run(Manager *m) {
1100 r = sd_event_get_state(m->event);
1103 if (r == SD_EVENT_FINISHED)
1106 manager_gc(m, true);
1108 r = sd_event_run(m->event, (uint64_t) -1);
1114 static int manager_parse_config_file(Manager *m) {
1117 return config_parse_many("/etc/systemd/logind.conf",
1118 CONF_DIRS_NULSTR("systemd/logind.conf"),
1120 config_item_perf_lookup, logind_gperf_lookup,
1124 int main(int argc, char *argv[]) {
1128 log_set_target(LOG_TARGET_AUTO);
1129 log_set_facility(LOG_AUTH);
1130 log_parse_environment();
1136 log_error("This program takes no arguments.");
1141 /* Always create the directories people can create inotify
1142 * watches in. Note that some applications might check for the
1143 * existence of /run/systemd/seats/ to determine whether
1144 * logind is available, so please always make sure this check
1146 r = mkdir_label("/run/systemd", 0755);
1147 if ( (r < 0) && (-EEXIST != r) )
1148 return log_error_errno(r, "Failed to create /run/systemd : %m");
1149 r = mkdir_label("/run/systemd/seats", 0755);
1150 if ( r < 0 && (-EEXIST != r) )
1151 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1152 r = mkdir_label("/run/systemd/users", 0755);
1153 if ( r < 0 && (-EEXIST != r) )
1154 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1155 r = mkdir_label("/run/systemd/sessions", 0755);
1156 if ( r < 0 && (-EEXIST != r) )
1157 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1158 r = mkdir_label("/run/systemd/machines", 0755);
1159 if ( r < 0 && (-EEXIST != r) )
1160 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1168 manager_parse_config_file(m);
1170 r = manager_startup(m);
1172 log_error_errno(r, "Failed to fully start up daemon: %m");
1176 log_debug("logind running as pid "PID_FMT, getpid());
1180 "STATUS=Processing requests...");
1184 log_debug("logind stopped as pid "PID_FMT, getpid());
1189 "STATUS=Shutting down...");
1193 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;