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"
33 #include "udev-util.h"
34 #include "formats-util.h"
35 #include "signal-util.h"
38 static void manager_free(Manager *m);
40 static Manager *manager_new(void) {
48 m->console_active_fd = -1;
49 m->reserve_vt_fd = -1;
54 m->inhibit_delay_max = 5 * USEC_PER_SEC;
55 m->handle_power_key = HANDLE_POWEROFF;
56 m->handle_suspend_key = HANDLE_SUSPEND;
57 m->handle_hibernate_key = HANDLE_HIBERNATE;
58 m->handle_lid_switch = HANDLE_SUSPEND;
59 m->handle_lid_switch_docked = HANDLE_IGNORE;
60 m->lid_switch_ignore_inhibited = true;
61 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
63 m->idle_action_usec = 30 * USEC_PER_MINUTE;
64 m->idle_action = HANDLE_IGNORE;
65 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
67 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
69 m->devices = hashmap_new(&string_hash_ops);
70 m->seats = hashmap_new(&string_hash_ops);
71 m->sessions = hashmap_new(&string_hash_ops);
72 m->users = hashmap_new(NULL);
73 m->inhibitors = hashmap_new(&string_hash_ops);
74 m->buttons = hashmap_new(&string_hash_ops);
76 m->user_units = hashmap_new(&string_hash_ops);
77 m->session_units = hashmap_new(&string_hash_ops);
79 m->busnames = set_new(&string_hash_ops);
81 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames ||
82 !m->user_units || !m->session_units)
85 m->kill_exclude_users = strv_new("root", NULL);
86 if (!m->kill_exclude_users)
93 r = sd_event_default(&m->event);
97 sd_event_set_watchdog(m->event, true);
106 static void manager_free(Manager *m) {
116 while ((session = hashmap_first(m->sessions)))
117 session_free(session);
119 while ((u = hashmap_first(m->users)))
122 while ((d = hashmap_first(m->devices)))
125 while ((s = hashmap_first(m->seats)))
128 while ((i = hashmap_first(m->inhibitors)))
131 while ((b = hashmap_first(m->buttons)))
134 hashmap_free(m->devices);
135 hashmap_free(m->seats);
136 hashmap_free(m->sessions);
137 hashmap_free(m->users);
138 hashmap_free(m->inhibitors);
139 hashmap_free(m->buttons);
141 hashmap_free(m->user_units);
142 hashmap_free(m->session_units);
144 set_free_free(m->busnames);
146 sd_event_source_unref(m->idle_action_event_source);
147 sd_event_source_unref(m->inhibit_timeout_source);
148 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
149 sd_event_source_unref(m->nologin_timeout_source);
150 sd_event_source_unref(m->wall_message_timeout_source);
152 sd_event_source_unref(m->console_active_event_source);
153 sd_event_source_unref(m->udev_seat_event_source);
154 sd_event_source_unref(m->udev_device_event_source);
155 sd_event_source_unref(m->udev_vcsa_event_source);
156 sd_event_source_unref(m->udev_button_event_source);
157 sd_event_source_unref(m->lid_switch_ignore_event_source);
159 safe_close(m->console_active_fd);
161 if (m->udev_seat_monitor)
162 udev_monitor_unref(m->udev_seat_monitor);
163 if (m->udev_device_monitor)
164 udev_monitor_unref(m->udev_device_monitor);
165 if (m->udev_vcsa_monitor)
166 udev_monitor_unref(m->udev_vcsa_monitor);
167 if (m->udev_button_monitor)
168 udev_monitor_unref(m->udev_button_monitor);
173 if (m->unlink_nologin)
174 (void) unlink("/run/nologin");
176 bus_verify_polkit_async_registry_free(m->polkit_registry);
178 sd_bus_unref(m->bus);
179 sd_event_unref(m->event);
181 safe_close(m->reserve_vt_fd);
183 strv_free(m->kill_only_users);
184 strv_free(m->kill_exclude_users);
186 free(m->scheduled_shutdown_type);
187 free(m->scheduled_shutdown_tty);
188 free(m->wall_message);
193 static int manager_enumerate_devices(Manager *m) {
194 struct udev_list_entry *item = NULL, *first = NULL;
195 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
200 /* Loads devices from udev and creates seats for them as
203 e = udev_enumerate_new(m->udev);
207 r = udev_enumerate_add_match_tag(e, "master-of-seat");
211 r = udev_enumerate_add_match_is_initialized(e);
215 r = udev_enumerate_scan_devices(e);
219 first = udev_enumerate_get_list_entry(e);
220 udev_list_entry_foreach(item, first) {
221 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
224 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
228 k = manager_process_seat_device(m, d);
236 static int manager_enumerate_buttons(Manager *m) {
237 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
238 struct udev_list_entry *item = NULL, *first = NULL;
243 /* Loads buttons from udev */
245 if (m->handle_power_key == HANDLE_IGNORE &&
246 m->handle_suspend_key == HANDLE_IGNORE &&
247 m->handle_hibernate_key == HANDLE_IGNORE &&
248 m->handle_lid_switch == HANDLE_IGNORE &&
249 m->handle_lid_switch_docked == HANDLE_IGNORE)
252 e = udev_enumerate_new(m->udev);
256 r = udev_enumerate_add_match_subsystem(e, "input");
260 r = udev_enumerate_add_match_tag(e, "power-switch");
264 r = udev_enumerate_add_match_is_initialized(e);
268 r = udev_enumerate_scan_devices(e);
272 first = udev_enumerate_get_list_entry(e);
273 udev_list_entry_foreach(item, first) {
274 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
277 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
281 k = manager_process_button_device(m, d);
289 static int manager_enumerate_seats(Manager *m) {
290 _cleanup_closedir_ DIR *d = NULL;
296 /* This loads data about seats stored on disk, but does not
297 * actually create any seats. Removes data of seats that no
300 d = opendir("/run/systemd/seats");
305 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
309 FOREACH_DIRENT(de, d, return -errno) {
313 if (!dirent_is_file(de))
316 s = hashmap_get(m->seats, de->d_name);
318 unlinkat(dirfd(d), de->d_name, 0);
330 static int manager_enumerate_linger_users(Manager *m) {
331 _cleanup_closedir_ DIR *d = NULL;
337 d = opendir("/var/lib/systemd/linger");
342 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
346 FOREACH_DIRENT(de, d, return -errno) {
349 if (!dirent_is_file(de))
352 k = manager_add_user_by_name(m, de->d_name, NULL);
354 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
362 static int manager_enumerate_users(Manager *m) {
363 _cleanup_closedir_ DIR *d = NULL;
369 /* Add lingering users */
370 r = manager_enumerate_linger_users(m);
372 /* Read in user data stored on disk */
373 d = opendir("/run/systemd/users");
378 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
382 FOREACH_DIRENT(de, d, return -errno) {
385 if (!dirent_is_file(de))
388 k = manager_add_user_by_name(m, de->d_name, &u);
390 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
396 user_add_to_gc_queue(u);
406 static int manager_enumerate_sessions(Manager *m) {
407 _cleanup_closedir_ DIR *d = NULL;
413 /* Read in session data stored on disk */
414 d = opendir("/run/systemd/sessions");
419 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
423 FOREACH_DIRENT(de, d, return -errno) {
427 if (!dirent_is_file(de))
430 if (!session_id_valid(de->d_name)) {
431 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
436 k = manager_add_session(m, de->d_name, &s);
438 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
444 session_add_to_gc_queue(s);
454 static int manager_enumerate_inhibitors(Manager *m) {
455 _cleanup_closedir_ DIR *d = NULL;
461 d = opendir("/run/systemd/inhibit");
466 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
470 FOREACH_DIRENT(de, d, return -errno) {
474 if (!dirent_is_file(de))
477 k = manager_add_inhibitor(m, de->d_name, &i);
479 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
484 k = inhibitor_load(i);
492 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
493 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
494 Manager *m = userdata;
498 d = udev_monitor_receive_device(m->udev_seat_monitor);
502 manager_process_seat_device(m, d);
506 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
507 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
508 Manager *m = userdata;
512 d = udev_monitor_receive_device(m->udev_device_monitor);
516 manager_process_seat_device(m, d);
520 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
521 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
522 Manager *m = userdata;
527 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
531 name = udev_device_get_sysname(d);
533 /* Whenever a VCSA device is removed try to reallocate our
534 * VTs, to make sure our auto VTs never go away. */
536 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
537 seat_preallocate_vts(m->seat0);
542 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
543 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
544 Manager *m = userdata;
548 d = udev_monitor_receive_device(m->udev_button_monitor);
552 manager_process_button_device(m, d);
556 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
557 Manager *m = userdata;
561 assert(m->console_active_fd == fd);
563 seat_read_active_vt(m->seat0);
567 static int manager_reserve_vt(Manager *m) {
568 _cleanup_free_ char *p = NULL;
572 if (m->reserve_vt <= 0)
575 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
578 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
579 if (m->reserve_vt_fd < 0) {
581 /* Don't complain on VT-less systems */
583 log_warning_errno(errno, "Failed to pin reserved VT: %m");
590 static int manager_connect_bus(Manager *m) {
591 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
597 r = sd_bus_default_system(&m->bus);
599 return log_error_errno(r, "Failed to connect to system bus: %m");
601 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
603 return log_error_errno(r, "Failed to add manager object vtable: %m");
605 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
607 return log_error_errno(r, "Failed to add seat object vtable: %m");
609 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
611 return log_error_errno(r, "Failed to add seat enumerator: %m");
613 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
615 return log_error_errno(r, "Failed to add session object vtable: %m");
617 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
619 return log_error_errno(r, "Failed to add session enumerator: %m");
621 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
623 return log_error_errno(r, "Failed to add user object vtable: %m");
625 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
627 return log_error_errno(r, "Failed to add user enumerator: %m");
629 r = sd_bus_add_match(m->bus,
632 "sender='org.freedesktop.DBus',"
633 "interface='org.freedesktop.DBus',"
634 "member='NameOwnerChanged',"
635 "path='/org/freedesktop/DBus'",
636 match_name_owner_changed, m);
638 return log_error_errno(r, "Failed to add match for NameOwnerChanged: %m");
640 r = sd_bus_add_match(m->bus,
643 "sender='org.freedesktop.systemd1',"
644 "interface='org.freedesktop.systemd1.Manager',"
645 "member='JobRemoved',"
646 "path='/org/freedesktop/systemd1'",
647 match_job_removed, m);
649 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
651 r = sd_bus_add_match(m->bus,
654 "sender='org.freedesktop.systemd1',"
655 "interface='org.freedesktop.systemd1.Manager',"
656 "member='UnitRemoved',"
657 "path='/org/freedesktop/systemd1'",
658 match_unit_removed, m);
660 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
662 r = sd_bus_add_match(m->bus,
665 "sender='org.freedesktop.systemd1',"
666 "interface='org.freedesktop.DBus.Properties',"
667 "member='PropertiesChanged'",
668 match_properties_changed, m);
670 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
672 r = sd_bus_add_match(m->bus,
675 "sender='org.freedesktop.systemd1',"
676 "interface='org.freedesktop.systemd1.Manager',"
677 "member='Reloading',"
678 "path='/org/freedesktop/systemd1'",
681 return log_error_errno(r, "Failed to add match for Reloading: %m");
683 r = sd_bus_call_method(
685 "org.freedesktop.systemd1",
686 "/org/freedesktop/systemd1",
687 "org.freedesktop.systemd1.Manager",
692 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
696 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
698 return log_error_errno(r, "Failed to register name: %m");
700 r = sd_bus_attach_event(m->bus, m->event, 0);
702 return log_error_errno(r, "Failed to attach bus to event loop: %m");
707 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
709 Session *active, *iter;
712 * We got a VT-switch signal and we have to acknowledge it immediately.
713 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
714 * old user-space might run multiple sessions on a single VT, *sigh*.
715 * Therefore, we have to iterate all sessions and find one with a vtfd
716 * on the requested VT.
717 * As only VTs with active controllers have VT_PROCESS set, our current
718 * notion of the active VT might be wrong (for instance if the switch
719 * happens while we setup VT_PROCESS). Therefore, read the current VT
720 * first and then use s->active->vtnr as reference. Note that this is
721 * not racy, as no further VT-switch can happen as long as we're in
722 * synchronous VT_PROCESS mode.
726 seat_read_active_vt(m->seat0);
728 active = m->seat0->active;
729 if (!active || active->vtnr < 1) {
730 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
734 if (active->vtfd >= 0) {
735 session_leave_vt(active);
737 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
738 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
739 session_leave_vt(iter);
748 static int manager_connect_console(Manager *m) {
752 assert(m->console_active_fd < 0);
754 /* On certain architectures (S390 and Xen, and containers),
755 /dev/tty0 does not exist, so don't fail if we can't open
757 if (access("/dev/tty0", F_OK) < 0)
760 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
761 if (m->console_active_fd < 0) {
763 /* On some systems the device node /dev/tty0 may exist
764 * even though /sys/class/tty/tty0 does not. */
768 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
772 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
774 log_error("Failed to watch foreground console");
779 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
780 * as VT-acquire signal. We ignore any acquire-events (yes, we still
781 * have to provide a valid signal-number for it!) and acknowledge all
782 * release events immediately.
785 if (SIGRTMIN + 1 > SIGRTMAX) {
786 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
790 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
791 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
793 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
800 static int manager_connect_udev(Manager *m) {
804 assert(!m->udev_seat_monitor);
805 assert(!m->udev_device_monitor);
806 assert(!m->udev_vcsa_monitor);
807 assert(!m->udev_button_monitor);
809 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
810 if (!m->udev_seat_monitor)
813 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
817 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
821 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);
825 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
826 if (!m->udev_device_monitor)
829 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
833 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
837 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
841 r = udev_monitor_enable_receiving(m->udev_device_monitor);
845 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);
849 /* Don't watch keys if nobody cares */
850 if (m->handle_power_key != HANDLE_IGNORE ||
851 m->handle_suspend_key != HANDLE_IGNORE ||
852 m->handle_hibernate_key != HANDLE_IGNORE ||
853 m->handle_lid_switch != HANDLE_IGNORE ||
854 m->handle_lid_switch_docked != HANDLE_IGNORE) {
856 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
857 if (!m->udev_button_monitor)
860 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
864 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
868 r = udev_monitor_enable_receiving(m->udev_button_monitor);
872 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);
877 /* Don't bother watching VCSA devices, if nobody cares */
878 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
880 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
881 if (!m->udev_vcsa_monitor)
884 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
888 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
892 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);
900 static void manager_gc(Manager *m, bool drop_not_started) {
907 while ((seat = m->seat_gc_queue)) {
908 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
909 seat->in_gc_queue = false;
911 if (!seat_check_gc(seat, drop_not_started)) {
912 seat_stop(seat, false);
917 while ((session = m->session_gc_queue)) {
918 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
919 session->in_gc_queue = false;
921 /* First, if we are not closing yet, initiate stopping */
922 if (!session_check_gc(session, drop_not_started) &&
923 session_get_state(session) != SESSION_CLOSING)
924 session_stop(session, false);
926 /* Normally, this should make the session busy again,
927 * if it doesn't then let's get rid of it
929 if (!session_check_gc(session, drop_not_started)) {
930 session_finalize(session);
931 session_free(session);
935 while ((user = m->user_gc_queue)) {
936 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
937 user->in_gc_queue = false;
939 /* First step: queue stop jobs */
940 if (!user_check_gc(user, drop_not_started))
941 user_stop(user, false);
943 /* Second step: finalize user */
944 if (!user_check_gc(user, drop_not_started)) {
951 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
952 Manager *m = userdata;
953 struct dual_timestamp since;
959 if (m->idle_action == HANDLE_IGNORE ||
960 m->idle_action_usec <= 0)
963 n = now(CLOCK_MONOTONIC);
965 r = manager_get_idle_hint(m, &since);
967 /* Not idle. Let's check if after a timeout it might be idle then. */
968 elapse = n + m->idle_action_usec;
970 /* Idle! Let's see if it's time to do something, or if
971 * we shall sleep for longer. */
973 if (n >= since.monotonic + m->idle_action_usec &&
974 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
975 log_info("System idle. Taking action.");
977 manager_handle_action(m, 0, m->idle_action, false, false);
978 m->idle_action_not_before_usec = n;
981 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
984 if (!m->idle_action_event_source) {
986 r = sd_event_add_time(
988 &m->idle_action_event_source,
990 elapse, USEC_PER_SEC*30,
991 manager_dispatch_idle_action, m);
993 return log_error_errno(r, "Failed to add idle event source: %m");
995 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
997 return log_error_errno(r, "Failed to set idle event source priority: %m");
999 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1001 return log_error_errno(r, "Failed to set idle event timer: %m");
1003 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1005 return log_error_errno(r, "Failed to enable idle event timer: %m");
1011 static int manager_startup(Manager *m) {
1017 Inhibitor *inhibitor;
1022 /* Connect to console */
1023 r = manager_connect_console(m);
1027 /* Connect to udev */
1028 r = manager_connect_udev(m);
1030 return log_error_errno(r, "Failed to create udev watchers: %m");
1032 /* Connect to the bus */
1033 r = manager_connect_bus(m);
1037 /* Instantiate magic seat 0 */
1038 r = manager_add_seat(m, "seat0", &m->seat0);
1040 return log_error_errno(r, "Failed to add seat0: %m");
1042 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1044 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1046 /* Deserialize state */
1047 r = manager_enumerate_devices(m);
1049 log_warning_errno(r, "Device enumeration failed: %m");
1051 r = manager_enumerate_seats(m);
1053 log_warning_errno(r, "Seat enumeration failed: %m");
1055 r = manager_enumerate_users(m);
1057 log_warning_errno(r, "User enumeration failed: %m");
1059 r = manager_enumerate_sessions(m);
1061 log_warning_errno(r, "Session enumeration failed: %m");
1063 r = manager_enumerate_inhibitors(m);
1065 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1067 r = manager_enumerate_buttons(m);
1069 log_warning_errno(r, "Button enumeration failed: %m");
1071 /* Remove stale objects before we start them */
1072 manager_gc(m, false);
1074 /* Reserve the special reserved VT */
1075 manager_reserve_vt(m);
1077 /* And start everything */
1078 HASHMAP_FOREACH(seat, m->seats, i)
1081 HASHMAP_FOREACH(user, m->users, i)
1084 HASHMAP_FOREACH(session, m->sessions, i)
1085 session_start(session);
1087 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1088 inhibitor_start(inhibitor);
1090 HASHMAP_FOREACH(button, m->buttons, i)
1091 button_check_switches(button);
1093 manager_dispatch_idle_action(NULL, 0, m);
1098 static int manager_run(Manager *m) {
1104 r = sd_event_get_state(m->event);
1107 if (r == SD_EVENT_FINISHED)
1110 manager_gc(m, true);
1112 r = manager_dispatch_delayed(m, false);
1118 r = sd_event_run(m->event, (uint64_t) -1);
1124 static int manager_parse_config_file(Manager *m) {
1127 return config_parse_many("/etc/systemd/logind.conf",
1128 CONF_DIRS_NULSTR("systemd/logind.conf"),
1130 config_item_perf_lookup, logind_gperf_lookup,
1134 int main(int argc, char *argv[]) {
1138 log_set_target(LOG_TARGET_AUTO);
1139 log_set_facility(LOG_AUTH);
1140 log_parse_environment();
1146 log_error("This program takes no arguments.");
1151 /* Always create the directories people can create inotify
1152 * watches in. Note that some applications might check for the
1153 * existence of /run/systemd/seats/ to determine whether
1154 * logind is available, so please always make sure this check
1156 mkdir_label("/run/systemd/seats", 0755);
1157 mkdir_label("/run/systemd/users", 0755);
1158 mkdir_label("/run/systemd/sessions", 0755);
1166 manager_parse_config_file(m);
1168 r = manager_startup(m);
1170 log_error_errno(r, "Failed to fully start up daemon: %m");
1174 log_debug("logind running as pid "PID_FMT, getpid());
1178 "STATUS=Processing requests...");
1182 log_debug("logind stopped as pid "PID_FMT, getpid());
1187 "STATUS=Shutting down...");
1192 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;