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/>.
29 #include "sd-daemon.h"
31 #include "cgroup-util.h"
32 #include "conf-parser.h"
34 #include "bus-error.h"
36 #include "udev-util.h"
38 Manager *manager_new(void) {
46 m->console_active_fd = -1;
49 m->inhibit_delay_max = 5 * USEC_PER_SEC;
50 m->handle_power_key = HANDLE_POWEROFF;
51 m->handle_suspend_key = HANDLE_SUSPEND;
52 m->handle_hibernate_key = HANDLE_HIBERNATE;
53 m->handle_lid_switch = HANDLE_SUSPEND;
54 m->handle_lid_switch_docked = HANDLE_IGNORE;
55 m->lid_switch_ignore_inhibited = true;
56 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
58 m->idle_action_usec = 30 * USEC_PER_MINUTE;
59 m->idle_action = HANDLE_IGNORE;
60 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
62 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
64 m->devices = hashmap_new(&string_hash_ops);
65 m->seats = hashmap_new(&string_hash_ops);
66 m->sessions = hashmap_new(&string_hash_ops);
67 m->users = hashmap_new(NULL);
68 m->inhibitors = hashmap_new(&string_hash_ops);
69 m->buttons = hashmap_new(&string_hash_ops);
71 m->busnames = set_new(&string_hash_ops);
73 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames)
76 m->kill_exclude_users = strv_new("root", NULL);
77 if (!m->kill_exclude_users)
80 m->suspend_mode = NULL;
81 m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
82 if (!m->suspend_state)
84 m->hibernate_mode = strv_new("platform", "shutdown", NULL);
85 if (!m->hibernate_mode)
87 m->hibernate_state = strv_new("disk", NULL);
88 if (!m->hibernate_state)
90 m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
91 if (!m->hybrid_sleep_mode)
93 m->hybrid_sleep_state = strv_new("disk", NULL);
94 if (!m->hybrid_sleep_state)
101 r = sd_event_default(&m->event);
105 sd_event_set_watchdog(m->event, true);
115 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 set_free_free(m->busnames);
152 sd_event_source_unref(m->idle_action_event_source);
154 sd_event_source_unref(m->console_active_event_source);
155 sd_event_source_unref(m->udev_seat_event_source);
156 sd_event_source_unref(m->udev_device_event_source);
157 sd_event_source_unref(m->udev_vcsa_event_source);
158 sd_event_source_unref(m->udev_button_event_source);
159 sd_event_source_unref(m->lid_switch_ignore_event_source);
161 safe_close(m->console_active_fd);
163 if (m->udev_seat_monitor)
164 udev_monitor_unref(m->udev_seat_monitor);
165 if (m->udev_device_monitor)
166 udev_monitor_unref(m->udev_device_monitor);
167 if (m->udev_vcsa_monitor)
168 udev_monitor_unref(m->udev_vcsa_monitor);
169 if (m->udev_button_monitor)
170 udev_monitor_unref(m->udev_button_monitor);
175 bus_verify_polkit_async_registry_free(m->polkit_registry);
177 sd_bus_unref(m->bus);
178 sd_event_unref(m->event);
180 strv_free(m->kill_only_users);
181 strv_free(m->kill_exclude_users);
183 strv_free(m->suspend_mode);
184 strv_free(m->suspend_state);
185 strv_free(m->hibernate_mode);
186 strv_free(m->hibernate_state);
187 strv_free(m->hybrid_sleep_mode);
188 strv_free(m->hybrid_sleep_state);
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_button_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;
526 d = udev_monitor_receive_device(m->udev_button_monitor);
530 manager_process_button_device(m, d);
534 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
535 Manager *m = userdata;
539 assert(m->console_active_fd == fd);
541 seat_read_active_vt(m->seat0);
545 static int signal_agent_released(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
546 Manager *m = userdata;
555 r = sd_bus_message_read(message, "s", &cgroup);
557 bus_log_parse_error(r);
561 s = hashmap_get(m->sessions, cgroup);
564 log_warning("Session not found: %s", cgroup);
574 static int manager_connect_bus(Manager *m) {
575 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
581 r = sd_bus_default_system(&m->bus);
583 return log_error_errno(r, "Failed to connect to system bus: %m");
585 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
587 return log_error_errno(r, "Failed to add manager object vtable: %m");
589 r = sd_bus_add_match(m->bus, NULL,
591 "interface='org.freedesktop.systemd1.Agent',"
593 "path='/org/freedesktop/systemd1/agent'",
594 signal_agent_released, m);
596 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
598 return log_error_errno(r, "Failed to add seat object vtable: %m");
600 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
602 return log_error_errno(r, "Failed to add seat enumerator: %m");
604 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
606 return log_error_errno(r, "Failed to add session object vtable: %m");
608 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
610 return log_error_errno(r, "Failed to add session enumerator: %m");
612 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
614 return log_error_errno(r, "Failed to add user object vtable: %m");
616 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
618 return log_error_errno(r, "Failed to add user enumerator: %m");
620 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
622 return log_error_errno(r, "Failed to register name: %m");
624 r = sd_bus_attach_event(m->bus, m->event, 0);
626 return log_error_errno(r, "Failed to attach bus to event loop: %m");
631 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
633 Session *active, *iter;
636 * We got a VT-switch signal and we have to acknowledge it immediately.
637 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
638 * old user-space might run multiple sessions on a single VT, *sigh*.
639 * Therefore, we have to iterate all sessions and find one with a vtfd
640 * on the requested VT.
641 * As only VTs with active controllers have VT_PROCESS set, our current
642 * notion of the active VT might be wrong (for instance if the switch
643 * happens while we setup VT_PROCESS). Therefore, read the current VT
644 * first and then use s->active->vtnr as reference. Note that this is
645 * not racy, as no further VT-switch can happen as long as we're in
646 * synchronous VT_PROCESS mode.
650 seat_read_active_vt(m->seat0);
652 active = m->seat0->active;
653 if (!active || active->vtnr < 1) {
654 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
658 if (active->vtfd >= 0) {
659 session_leave_vt(active);
661 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
662 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
663 session_leave_vt(iter);
672 static int manager_setup_cgroup(Manager *m) {
673 _cleanup_free_ char *path = NULL;
678 /* 1. Determine hierarchy */
679 free(m->cgroup_root);
680 m->cgroup_root = NULL;
682 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &m->cgroup_root);
684 return log_error_errno(r, "Cannot determine cgroup we are running in: %m");
686 /* Make sure to store away the root value without trailing
687 * slash, even for the root dir, so that we can easily prepend
689 if (streq(m->cgroup_root, "/"))
690 m->cgroup_root[0] = 0;
693 r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, NULL, &path);
695 return log_error_errno(r, "Cannot find cgroup mount point: %m");
697 log_debug("Using cgroup controller " SYSTEMD_CGROUP_CONTROLLER ". File system hierarchy is at %s.", path);
699 /* 3. Install agent */
700 r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, SYSTEMD_CGROUP_AGENT_PATH);
702 log_warning_errno(r, "Failed to install release agent, ignoring: %m");
704 log_debug("Installed release agent.");
706 log_debug("Release agent already installed.");
708 /* 4. Make sure we are in the root cgroup */
709 r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, 0);
711 return log_error_errno(r, "Failed to create root cgroup hierarchy: %m");
713 /* 5. And pin it, so that it cannot be unmounted */
714 safe_close(m->pin_cgroupfs_fd);
716 m->pin_cgroupfs_fd = open(path, O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY|O_NONBLOCK);
717 if (m->pin_cgroupfs_fd < 0)
718 return log_error_errno(errno, "Failed to open pin file: %m");
723 static int manager_connect_console(Manager *m) {
727 assert(m->console_active_fd < 0);
729 /* On certain architectures (S390 and Xen, and containers),
730 /dev/tty0 does not exist, so don't fail if we can't open
732 if (access("/dev/tty0", F_OK) < 0)
735 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
736 if (m->console_active_fd < 0) {
738 /* On some systems the device node /dev/tty0 may exist
739 * even though /sys/class/tty/tty0 does not. */
743 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
747 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
749 log_error("Failed to watch foreground console");
754 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
755 * as VT-acquire signal. We ignore any acquire-events (yes, we still
756 * have to provide a valid signal-number for it!) and acknowledge all
757 * release events immediately.
760 if (SIGRTMIN + 1 > SIGRTMAX) {
761 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
765 r = ignore_signals(SIGRTMIN + 1, -1);
767 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
769 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
771 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
773 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
780 static int manager_connect_udev(Manager *m) {
784 assert(!m->udev_seat_monitor);
785 assert(!m->udev_device_monitor);
786 assert(!m->udev_vcsa_monitor);
787 assert(!m->udev_button_monitor);
789 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
790 if (!m->udev_seat_monitor)
793 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
797 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
801 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);
805 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
806 if (!m->udev_device_monitor)
809 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
813 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
817 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
821 r = udev_monitor_enable_receiving(m->udev_device_monitor);
825 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);
829 /* Don't watch keys if nobody cares */
830 if (m->handle_power_key != HANDLE_IGNORE ||
831 m->handle_suspend_key != HANDLE_IGNORE ||
832 m->handle_hibernate_key != HANDLE_IGNORE ||
833 m->handle_lid_switch != HANDLE_IGNORE ||
834 m->handle_lid_switch_docked != HANDLE_IGNORE) {
836 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
837 if (!m->udev_button_monitor)
840 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
844 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
848 r = udev_monitor_enable_receiving(m->udev_button_monitor);
852 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);
860 void manager_gc(Manager *m, bool drop_not_started) {
867 while ((seat = m->seat_gc_queue)) {
868 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
869 seat->in_gc_queue = false;
871 if (!seat_check_gc(seat, drop_not_started)) {
872 seat_stop(seat, false);
877 while ((session = m->session_gc_queue)) {
878 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
879 session->in_gc_queue = false;
881 /* First, if we are not closing yet, initiate stopping */
882 if (!session_check_gc(session, drop_not_started) &&
883 session_get_state(session) != SESSION_CLOSING)
884 session_stop(session, false);
886 /* Normally, this should make the session busy again,
887 * if it doesn't then let's get rid of it
889 if (!session_check_gc(session, drop_not_started)) {
890 session_finalize(session);
891 session_free(session);
895 while ((user = m->user_gc_queue)) {
896 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
897 user->in_gc_queue = false;
899 /* First step: queue stop jobs */
900 if (!user_check_gc(user, drop_not_started))
901 user_stop(user, false);
903 /* Second step: finalize user */
904 if (!user_check_gc(user, drop_not_started)) {
911 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
912 Manager *m = userdata;
913 struct dual_timestamp since;
919 if (m->idle_action == HANDLE_IGNORE ||
920 m->idle_action_usec <= 0)
923 n = now(CLOCK_MONOTONIC);
925 r = manager_get_idle_hint(m, &since);
927 /* Not idle. Let's check if after a timeout it might be idle then. */
928 elapse = n + m->idle_action_usec;
930 /* Idle! Let's see if it's time to do something, or if
931 * we shall sleep for longer. */
933 if (n >= since.monotonic + m->idle_action_usec &&
934 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
935 log_info("System idle. Taking action.");
937 manager_handle_action(m, 0, m->idle_action, false, false);
938 m->idle_action_not_before_usec = n;
941 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
944 if (!m->idle_action_event_source) {
946 r = sd_event_add_time(
948 &m->idle_action_event_source,
950 elapse, USEC_PER_SEC*30,
951 manager_dispatch_idle_action, m);
953 return log_error_errno(r, "Failed to add idle event source: %m");
955 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
957 return log_error_errno(r, "Failed to set idle event source priority: %m");
959 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
961 return log_error_errno(r, "Failed to set idle event timer: %m");
963 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
965 return log_error_errno(r, "Failed to enable idle event timer: %m");
971 int manager_startup(Manager *m) {
977 Inhibitor *inhibitor;
983 r = manager_setup_cgroup(m);
987 /* Connect to console */
988 r = manager_connect_console(m);
992 /* Connect to udev */
993 r = manager_connect_udev(m);
995 return log_error_errno(r, "Failed to create udev watchers: %m");
997 /* Connect to the bus */
998 r = manager_connect_bus(m);
1002 /* Instantiate magic seat 0 */
1003 r = manager_add_seat(m, "seat0", &m->seat0);
1005 return log_error_errno(r, "Failed to add seat0: %m");
1007 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1009 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1011 /* Deserialize state */
1012 r = manager_enumerate_devices(m);
1014 log_warning_errno(r, "Device enumeration failed: %m");
1016 r = manager_enumerate_seats(m);
1018 log_warning_errno(r, "Seat enumeration failed: %m");
1020 r = manager_enumerate_users(m);
1022 log_warning_errno(r, "User enumeration failed: %m");
1024 r = manager_enumerate_sessions(m);
1026 log_warning_errno(r, "Session enumeration failed: %m");
1028 r = manager_enumerate_inhibitors(m);
1030 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1032 r = manager_enumerate_buttons(m);
1034 log_warning_errno(r, "Button enumeration failed: %m");
1036 /* Remove stale objects before we start them */
1037 manager_gc(m, false);
1039 /* And start everything */
1040 HASHMAP_FOREACH(seat, m->seats, i)
1043 HASHMAP_FOREACH(user, m->users, i)
1046 HASHMAP_FOREACH(session, m->sessions, i)
1047 session_start(session);
1049 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1050 inhibitor_start(inhibitor);
1052 HASHMAP_FOREACH(button, m->buttons, i)
1053 button_check_switches(button);
1055 manager_dispatch_idle_action(NULL, 0, m);
1060 int manager_run(Manager *m) {
1066 usec_t us = (uint64_t) -1;
1068 r = sd_event_get_state(m->event);
1071 if (r == SD_EVENT_FINISHED)
1074 manager_gc(m, true);
1076 if (manager_dispatch_delayed(m) > 0)
1079 if (m->action_what != 0) {
1082 x = now(CLOCK_MONOTONIC);
1083 y = m->action_timestamp + m->inhibit_delay_max;
1085 us = x >= y ? 0 : y - x;
1088 r = sd_event_run(m->event, us);
1094 static int manager_parse_config_file(Manager *m) {
1095 const char *unit, *logind_conf, *sections;
1097 bool relaxed, allow_include, warn;
1102 logind_conf = getenv("ELOGIND_CONF_FILE");
1104 logind_conf = PKGSYSCONFDIR "/logind.conf";
1105 sections = "Login\0Sleep\0";
1108 allow_include = false;
1111 return config_parse(unit, logind_conf, file, sections,
1112 config_item_perf_lookup, logind_gperf_lookup,
1113 relaxed, allow_include, warn, m);
1116 int main(int argc, char *argv[]) {
1120 log_set_target(LOG_TARGET_AUTO);
1121 log_set_facility(LOG_AUTH);
1122 log_parse_environment();
1128 log_error("This program takes no arguments.");
1133 /* Always create the directories people can create inotify
1134 * watches in. Note that some applications might check for the
1135 * existence of /run/systemd/seats/ to determine whether
1136 * logind is available, so please always make sure this check
1138 mkdir_label("/run/systemd/seats", 0755);
1139 mkdir_label("/run/systemd/users", 0755);
1140 mkdir_label("/run/systemd/sessions", 0755);
1141 mkdir_label("/run/systemd/machines", 0755);
1149 manager_parse_config_file(m);
1151 r = manager_startup(m);
1153 log_error_errno(r, "Failed to fully start up daemon: %m");
1157 log_debug("logind running as pid "PID_FMT, getpid());
1161 "STATUS=Processing requests...");
1165 log_debug("logind stopped as pid "PID_FMT, getpid());
1170 "STATUS=Shutting down...");
1175 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;