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"
37 static void manager_free(Manager *m);
39 static Manager *manager_new(void) {
47 m->console_active_fd = -1;
48 m->reserve_vt_fd = -1;
53 m->inhibit_delay_max = 5 * USEC_PER_SEC;
54 m->handle_power_key = HANDLE_POWEROFF;
55 m->handle_suspend_key = HANDLE_SUSPEND;
56 m->handle_hibernate_key = HANDLE_HIBERNATE;
57 m->handle_lid_switch = HANDLE_SUSPEND;
58 m->handle_lid_switch_docked = HANDLE_IGNORE;
59 m->lid_switch_ignore_inhibited = true;
60 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
62 m->idle_action_usec = 30 * USEC_PER_MINUTE;
63 m->idle_action = HANDLE_IGNORE;
64 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
66 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
68 m->devices = hashmap_new(&string_hash_ops);
69 m->seats = hashmap_new(&string_hash_ops);
70 m->sessions = hashmap_new(&string_hash_ops);
71 m->users = hashmap_new(NULL);
72 m->inhibitors = hashmap_new(&string_hash_ops);
73 m->buttons = hashmap_new(&string_hash_ops);
75 m->user_units = hashmap_new(&string_hash_ops);
76 m->session_units = hashmap_new(&string_hash_ops);
78 m->busnames = set_new(&string_hash_ops);
80 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames ||
81 !m->user_units || !m->session_units)
84 m->kill_exclude_users = strv_new("root", NULL);
85 if (!m->kill_exclude_users)
92 r = sd_event_default(&m->event);
96 sd_event_set_watchdog(m->event, true);
105 static void manager_free(Manager *m) {
115 while ((session = hashmap_first(m->sessions)))
116 session_free(session);
118 while ((u = hashmap_first(m->users)))
121 while ((d = hashmap_first(m->devices)))
124 while ((s = hashmap_first(m->seats)))
127 while ((i = hashmap_first(m->inhibitors)))
130 while ((b = hashmap_first(m->buttons)))
133 hashmap_free(m->devices);
134 hashmap_free(m->seats);
135 hashmap_free(m->sessions);
136 hashmap_free(m->users);
137 hashmap_free(m->inhibitors);
138 hashmap_free(m->buttons);
140 hashmap_free(m->user_units);
141 hashmap_free(m->session_units);
143 set_free_free(m->busnames);
145 sd_event_source_unref(m->idle_action_event_source);
146 sd_event_source_unref(m->inhibit_timeout_source);
147 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
148 sd_event_source_unref(m->nologin_timeout_source);
149 sd_event_source_unref(m->wall_message_timeout_source);
151 sd_event_source_unref(m->console_active_event_source);
152 sd_event_source_unref(m->udev_seat_event_source);
153 sd_event_source_unref(m->udev_device_event_source);
154 sd_event_source_unref(m->udev_vcsa_event_source);
155 sd_event_source_unref(m->udev_button_event_source);
156 sd_event_source_unref(m->lid_switch_ignore_event_source);
158 safe_close(m->console_active_fd);
160 if (m->udev_seat_monitor)
161 udev_monitor_unref(m->udev_seat_monitor);
162 if (m->udev_device_monitor)
163 udev_monitor_unref(m->udev_device_monitor);
164 if (m->udev_vcsa_monitor)
165 udev_monitor_unref(m->udev_vcsa_monitor);
166 if (m->udev_button_monitor)
167 udev_monitor_unref(m->udev_button_monitor);
172 if (m->unlink_nologin)
173 unlink("/run/nologin");
175 bus_verify_polkit_async_registry_free(m->polkit_registry);
177 sd_bus_unref(m->bus);
178 sd_event_unref(m->event);
180 safe_close(m->reserve_vt_fd);
182 strv_free(m->kill_only_users);
183 strv_free(m->kill_exclude_users);
185 free(m->scheduled_shutdown_type);
186 free(m->scheduled_shutdown_tty);
187 free(m->wall_message);
192 static int manager_enumerate_devices(Manager *m) {
193 struct udev_list_entry *item = NULL, *first = NULL;
194 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
199 /* Loads devices from udev and creates seats for them as
202 e = udev_enumerate_new(m->udev);
206 r = udev_enumerate_add_match_tag(e, "master-of-seat");
210 r = udev_enumerate_add_match_is_initialized(e);
214 r = udev_enumerate_scan_devices(e);
218 first = udev_enumerate_get_list_entry(e);
219 udev_list_entry_foreach(item, first) {
220 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
223 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
227 k = manager_process_seat_device(m, d);
235 static int manager_enumerate_buttons(Manager *m) {
236 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
237 struct udev_list_entry *item = NULL, *first = NULL;
242 /* Loads buttons from udev */
244 if (m->handle_power_key == HANDLE_IGNORE &&
245 m->handle_suspend_key == HANDLE_IGNORE &&
246 m->handle_hibernate_key == HANDLE_IGNORE &&
247 m->handle_lid_switch == HANDLE_IGNORE &&
248 m->handle_lid_switch_docked == HANDLE_IGNORE)
251 e = udev_enumerate_new(m->udev);
255 r = udev_enumerate_add_match_subsystem(e, "input");
259 r = udev_enumerate_add_match_tag(e, "power-switch");
263 r = udev_enumerate_add_match_is_initialized(e);
267 r = udev_enumerate_scan_devices(e);
271 first = udev_enumerate_get_list_entry(e);
272 udev_list_entry_foreach(item, first) {
273 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
276 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
280 k = manager_process_button_device(m, d);
288 static int manager_enumerate_seats(Manager *m) {
289 _cleanup_closedir_ DIR *d = NULL;
295 /* This loads data about seats stored on disk, but does not
296 * actually create any seats. Removes data of seats that no
299 d = opendir("/run/systemd/seats");
304 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
308 FOREACH_DIRENT(de, d, return -errno) {
312 if (!dirent_is_file(de))
315 s = hashmap_get(m->seats, de->d_name);
317 unlinkat(dirfd(d), de->d_name, 0);
329 static int manager_enumerate_linger_users(Manager *m) {
330 _cleanup_closedir_ DIR *d = NULL;
336 d = opendir("/var/lib/systemd/linger");
341 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
345 FOREACH_DIRENT(de, d, return -errno) {
348 if (!dirent_is_file(de))
351 k = manager_add_user_by_name(m, de->d_name, NULL);
353 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
361 static int manager_enumerate_users(Manager *m) {
362 _cleanup_closedir_ DIR *d = NULL;
368 /* Add lingering users */
369 r = manager_enumerate_linger_users(m);
371 /* Read in user data stored on disk */
372 d = opendir("/run/systemd/users");
377 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
381 FOREACH_DIRENT(de, d, return -errno) {
384 if (!dirent_is_file(de))
387 k = manager_add_user_by_name(m, de->d_name, &u);
389 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
395 user_add_to_gc_queue(u);
405 static int manager_enumerate_sessions(Manager *m) {
406 _cleanup_closedir_ DIR *d = NULL;
412 /* Read in session data stored on disk */
413 d = opendir("/run/systemd/sessions");
418 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
422 FOREACH_DIRENT(de, d, return -errno) {
426 if (!dirent_is_file(de))
429 if (!session_id_valid(de->d_name)) {
430 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
435 k = manager_add_session(m, de->d_name, &s);
437 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
443 session_add_to_gc_queue(s);
453 static int manager_enumerate_inhibitors(Manager *m) {
454 _cleanup_closedir_ DIR *d = NULL;
460 d = opendir("/run/systemd/inhibit");
465 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
469 FOREACH_DIRENT(de, d, return -errno) {
473 if (!dirent_is_file(de))
476 k = manager_add_inhibitor(m, de->d_name, &i);
478 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
483 k = inhibitor_load(i);
491 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
492 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
493 Manager *m = userdata;
497 d = udev_monitor_receive_device(m->udev_seat_monitor);
501 manager_process_seat_device(m, d);
505 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
506 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
507 Manager *m = userdata;
511 d = udev_monitor_receive_device(m->udev_device_monitor);
515 manager_process_seat_device(m, d);
519 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
520 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
521 Manager *m = userdata;
526 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
530 name = udev_device_get_sysname(d);
532 /* Whenever a VCSA device is removed try to reallocate our
533 * VTs, to make sure our auto VTs never go away. */
535 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
536 seat_preallocate_vts(m->seat0);
541 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
542 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
543 Manager *m = userdata;
547 d = udev_monitor_receive_device(m->udev_button_monitor);
551 manager_process_button_device(m, d);
555 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
556 Manager *m = userdata;
560 assert(m->console_active_fd == fd);
562 seat_read_active_vt(m->seat0);
566 static int manager_reserve_vt(Manager *m) {
567 _cleanup_free_ char *p = NULL;
571 if (m->reserve_vt <= 0)
574 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
577 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
578 if (m->reserve_vt_fd < 0) {
580 /* Don't complain on VT-less systems */
582 log_warning_errno(errno, "Failed to pin reserved VT: %m");
589 static int manager_connect_bus(Manager *m) {
590 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
596 r = sd_bus_default_system(&m->bus);
598 return log_error_errno(r, "Failed to connect to system bus: %m");
600 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
602 return log_error_errno(r, "Failed to add manager object vtable: %m");
604 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
606 return log_error_errno(r, "Failed to add seat object vtable: %m");
608 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
610 return log_error_errno(r, "Failed to add seat enumerator: %m");
612 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
614 return log_error_errno(r, "Failed to add session object vtable: %m");
616 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
618 return log_error_errno(r, "Failed to add session enumerator: %m");
620 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
622 return log_error_errno(r, "Failed to add user object vtable: %m");
624 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
626 return log_error_errno(r, "Failed to add user enumerator: %m");
628 r = sd_bus_add_match(m->bus,
631 "sender='org.freedesktop.DBus',"
632 "interface='org.freedesktop.DBus',"
633 "member='NameOwnerChanged',"
634 "path='/org/freedesktop/DBus'",
635 match_name_owner_changed, m);
637 return log_error_errno(r, "Failed to add match for NameOwnerChanged: %m");
639 r = sd_bus_add_match(m->bus,
642 "sender='org.freedesktop.systemd1',"
643 "interface='org.freedesktop.systemd1.Manager',"
644 "member='JobRemoved',"
645 "path='/org/freedesktop/systemd1'",
646 match_job_removed, m);
648 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
650 r = sd_bus_add_match(m->bus,
653 "sender='org.freedesktop.systemd1',"
654 "interface='org.freedesktop.systemd1.Manager',"
655 "member='UnitRemoved',"
656 "path='/org/freedesktop/systemd1'",
657 match_unit_removed, m);
659 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
661 r = sd_bus_add_match(m->bus,
664 "sender='org.freedesktop.systemd1',"
665 "interface='org.freedesktop.DBus.Properties',"
666 "member='PropertiesChanged'",
667 match_properties_changed, m);
669 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
671 r = sd_bus_add_match(m->bus,
674 "sender='org.freedesktop.systemd1',"
675 "interface='org.freedesktop.systemd1.Manager',"
676 "member='Reloading',"
677 "path='/org/freedesktop/systemd1'",
680 return log_error_errno(r, "Failed to add match for Reloading: %m");
682 r = sd_bus_call_method(
684 "org.freedesktop.systemd1",
685 "/org/freedesktop/systemd1",
686 "org.freedesktop.systemd1.Manager",
691 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
695 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
697 return log_error_errno(r, "Failed to register name: %m");
699 r = sd_bus_attach_event(m->bus, m->event, 0);
701 return log_error_errno(r, "Failed to attach bus to event loop: %m");
706 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
708 Session *active, *iter;
711 * We got a VT-switch signal and we have to acknowledge it immediately.
712 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
713 * old user-space might run multiple sessions on a single VT, *sigh*.
714 * Therefore, we have to iterate all sessions and find one with a vtfd
715 * on the requested VT.
716 * As only VTs with active controllers have VT_PROCESS set, our current
717 * notion of the active VT might be wrong (for instance if the switch
718 * happens while we setup VT_PROCESS). Therefore, read the current VT
719 * first and then use s->active->vtnr as reference. Note that this is
720 * not racy, as no further VT-switch can happen as long as we're in
721 * synchronous VT_PROCESS mode.
725 seat_read_active_vt(m->seat0);
727 active = m->seat0->active;
728 if (!active || active->vtnr < 1) {
729 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
733 if (active->vtfd >= 0) {
734 session_leave_vt(active);
736 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
737 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
738 session_leave_vt(iter);
747 static int manager_connect_console(Manager *m) {
751 assert(m->console_active_fd < 0);
753 /* On certain architectures (S390 and Xen, and containers),
754 /dev/tty0 does not exist, so don't fail if we can't open
756 if (access("/dev/tty0", F_OK) < 0)
759 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
760 if (m->console_active_fd < 0) {
762 /* On some systems the device node /dev/tty0 may exist
763 * even though /sys/class/tty/tty0 does not. */
767 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
771 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
773 log_error("Failed to watch foreground console");
778 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
779 * as VT-acquire signal. We ignore any acquire-events (yes, we still
780 * have to provide a valid signal-number for it!) and acknowledge all
781 * release events immediately.
784 if (SIGRTMIN + 1 > SIGRTMAX) {
785 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
789 r = ignore_signals(SIGRTMIN + 1, -1);
791 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
793 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
795 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
797 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
804 static int manager_connect_udev(Manager *m) {
808 assert(!m->udev_seat_monitor);
809 assert(!m->udev_device_monitor);
810 assert(!m->udev_vcsa_monitor);
811 assert(!m->udev_button_monitor);
813 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
814 if (!m->udev_seat_monitor)
817 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
821 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
825 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);
829 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
830 if (!m->udev_device_monitor)
833 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
837 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
841 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
845 r = udev_monitor_enable_receiving(m->udev_device_monitor);
849 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);
853 /* Don't watch keys if nobody cares */
854 if (m->handle_power_key != HANDLE_IGNORE ||
855 m->handle_suspend_key != HANDLE_IGNORE ||
856 m->handle_hibernate_key != HANDLE_IGNORE ||
857 m->handle_lid_switch != HANDLE_IGNORE ||
858 m->handle_lid_switch_docked != HANDLE_IGNORE) {
860 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
861 if (!m->udev_button_monitor)
864 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
868 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
872 r = udev_monitor_enable_receiving(m->udev_button_monitor);
876 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);
881 /* Don't bother watching VCSA devices, if nobody cares */
882 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
884 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
885 if (!m->udev_vcsa_monitor)
888 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
892 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
896 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);
904 static void manager_gc(Manager *m, bool drop_not_started) {
911 while ((seat = m->seat_gc_queue)) {
912 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
913 seat->in_gc_queue = false;
915 if (!seat_check_gc(seat, drop_not_started)) {
916 seat_stop(seat, false);
921 while ((session = m->session_gc_queue)) {
922 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
923 session->in_gc_queue = false;
925 /* First, if we are not closing yet, initiate stopping */
926 if (!session_check_gc(session, drop_not_started) &&
927 session_get_state(session) != SESSION_CLOSING)
928 session_stop(session, false);
930 /* Normally, this should make the session busy again,
931 * if it doesn't then let's get rid of it
933 if (!session_check_gc(session, drop_not_started)) {
934 session_finalize(session);
935 session_free(session);
939 while ((user = m->user_gc_queue)) {
940 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
941 user->in_gc_queue = false;
943 /* First step: queue stop jobs */
944 if (!user_check_gc(user, drop_not_started))
945 user_stop(user, false);
947 /* Second step: finalize user */
948 if (!user_check_gc(user, drop_not_started)) {
955 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
956 Manager *m = userdata;
957 struct dual_timestamp since;
963 if (m->idle_action == HANDLE_IGNORE ||
964 m->idle_action_usec <= 0)
967 n = now(CLOCK_MONOTONIC);
969 r = manager_get_idle_hint(m, &since);
971 /* Not idle. Let's check if after a timeout it might be idle then. */
972 elapse = n + m->idle_action_usec;
974 /* Idle! Let's see if it's time to do something, or if
975 * we shall sleep for longer. */
977 if (n >= since.monotonic + m->idle_action_usec &&
978 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
979 log_info("System idle. Taking action.");
981 manager_handle_action(m, 0, m->idle_action, false, false);
982 m->idle_action_not_before_usec = n;
985 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
988 if (!m->idle_action_event_source) {
990 r = sd_event_add_time(
992 &m->idle_action_event_source,
994 elapse, USEC_PER_SEC*30,
995 manager_dispatch_idle_action, m);
997 return log_error_errno(r, "Failed to add idle event source: %m");
999 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1001 return log_error_errno(r, "Failed to set idle event source priority: %m");
1003 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1005 return log_error_errno(r, "Failed to set idle event timer: %m");
1007 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1009 return log_error_errno(r, "Failed to enable idle event timer: %m");
1015 static int manager_startup(Manager *m) {
1021 Inhibitor *inhibitor;
1026 /* Connect to console */
1027 r = manager_connect_console(m);
1031 /* Connect to udev */
1032 r = manager_connect_udev(m);
1034 return log_error_errno(r, "Failed to create udev watchers: %m");
1036 /* Connect to the bus */
1037 r = manager_connect_bus(m);
1041 /* Instantiate magic seat 0 */
1042 r = manager_add_seat(m, "seat0", &m->seat0);
1044 return log_error_errno(r, "Failed to add seat0: %m");
1046 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1048 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1050 /* Deserialize state */
1051 r = manager_enumerate_devices(m);
1053 log_warning_errno(r, "Device enumeration failed: %m");
1055 r = manager_enumerate_seats(m);
1057 log_warning_errno(r, "Seat enumeration failed: %m");
1059 r = manager_enumerate_users(m);
1061 log_warning_errno(r, "User enumeration failed: %m");
1063 r = manager_enumerate_sessions(m);
1065 log_warning_errno(r, "Session enumeration failed: %m");
1067 r = manager_enumerate_inhibitors(m);
1069 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1071 r = manager_enumerate_buttons(m);
1073 log_warning_errno(r, "Button enumeration failed: %m");
1075 /* Remove stale objects before we start them */
1076 manager_gc(m, false);
1078 /* Reserve the special reserved VT */
1079 manager_reserve_vt(m);
1081 /* And start everything */
1082 HASHMAP_FOREACH(seat, m->seats, i)
1085 HASHMAP_FOREACH(user, m->users, i)
1088 HASHMAP_FOREACH(session, m->sessions, i)
1089 session_start(session);
1091 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1092 inhibitor_start(inhibitor);
1094 HASHMAP_FOREACH(button, m->buttons, i)
1095 button_check_switches(button);
1097 manager_dispatch_idle_action(NULL, 0, m);
1102 static int manager_run(Manager *m) {
1108 r = sd_event_get_state(m->event);
1111 if (r == SD_EVENT_FINISHED)
1114 manager_gc(m, true);
1116 r = sd_event_run(m->event, (uint64_t) -1);
1122 static int manager_parse_config_file(Manager *m) {
1125 return config_parse_many("/etc/systemd/logind.conf",
1126 CONF_DIRS_NULSTR("systemd/logind.conf"),
1128 config_item_perf_lookup, logind_gperf_lookup,
1132 int main(int argc, char *argv[]) {
1136 log_set_target(LOG_TARGET_AUTO);
1137 log_set_facility(LOG_AUTH);
1138 log_parse_environment();
1144 log_error("This program takes no arguments.");
1149 /* Always create the directories people can create inotify
1150 * watches in. Note that some applications might check for the
1151 * existence of /run/systemd/seats/ to determine whether
1152 * logind is available, so please always make sure this check
1154 mkdir_label("/run/systemd/seats", 0755);
1155 mkdir_label("/run/systemd/users", 0755);
1156 mkdir_label("/run/systemd/sessions", 0755);
1164 manager_parse_config_file(m);
1166 r = manager_startup(m);
1168 log_error_errno(r, "Failed to fully start up daemon: %m");
1172 log_debug("systemd-logind running as pid "PID_FMT, getpid());
1176 "STATUS=Processing requests...");
1180 log_debug("systemd-logind stopped as pid "PID_FMT, getpid());
1185 "STATUS=Shutting down...");
1190 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;