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"
37 #include "formats-util.h"
39 Manager *manager_new(void) {
47 m->console_active_fd = -1;
50 m->inhibit_delay_max = 5 * USEC_PER_SEC;
51 m->handle_power_key = HANDLE_POWEROFF;
52 m->handle_suspend_key = HANDLE_SUSPEND;
53 m->handle_hibernate_key = HANDLE_HIBERNATE;
54 m->handle_lid_switch = HANDLE_SUSPEND;
55 m->handle_lid_switch_docked = HANDLE_IGNORE;
56 m->lid_switch_ignore_inhibited = true;
57 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
59 m->idle_action_usec = 30 * USEC_PER_MINUTE;
60 m->idle_action = HANDLE_IGNORE;
61 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
63 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
65 m->devices = hashmap_new(&string_hash_ops);
66 m->seats = hashmap_new(&string_hash_ops);
67 m->sessions = hashmap_new(&string_hash_ops);
68 m->users = hashmap_new(NULL);
69 m->inhibitors = hashmap_new(&string_hash_ops);
70 m->buttons = hashmap_new(&string_hash_ops);
72 m->busnames = set_new(&string_hash_ops);
74 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames)
77 m->kill_exclude_users = strv_new("root", NULL);
78 if (!m->kill_exclude_users)
81 m->suspend_mode = NULL;
82 m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
83 if (!m->suspend_state)
85 m->hibernate_mode = strv_new("platform", "shutdown", NULL);
86 if (!m->hibernate_mode)
88 m->hibernate_state = strv_new("disk", NULL);
89 if (!m->hibernate_state)
91 m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
92 if (!m->hybrid_sleep_mode)
94 m->hybrid_sleep_state = strv_new("disk", NULL);
95 if (!m->hybrid_sleep_state)
102 r = sd_event_default(&m->event);
106 sd_event_set_watchdog(m->event, true);
116 void manager_free(Manager *m) {
126 while ((session = hashmap_first(m->sessions)))
127 session_free(session);
129 while ((u = hashmap_first(m->users)))
132 while ((d = hashmap_first(m->devices)))
135 while ((s = hashmap_first(m->seats)))
138 while ((i = hashmap_first(m->inhibitors)))
141 while ((b = hashmap_first(m->buttons)))
144 hashmap_free(m->devices);
145 hashmap_free(m->seats);
146 hashmap_free(m->sessions);
147 hashmap_free(m->users);
148 hashmap_free(m->inhibitors);
149 hashmap_free(m->buttons);
151 set_free_free(m->busnames);
153 sd_event_source_unref(m->idle_action_event_source);
155 sd_event_source_unref(m->console_active_event_source);
156 sd_event_source_unref(m->udev_seat_event_source);
157 sd_event_source_unref(m->udev_device_event_source);
158 sd_event_source_unref(m->udev_vcsa_event_source);
159 sd_event_source_unref(m->udev_button_event_source);
160 sd_event_source_unref(m->lid_switch_ignore_event_source);
162 safe_close(m->console_active_fd);
164 if (m->udev_seat_monitor)
165 udev_monitor_unref(m->udev_seat_monitor);
166 if (m->udev_device_monitor)
167 udev_monitor_unref(m->udev_device_monitor);
168 if (m->udev_vcsa_monitor)
169 udev_monitor_unref(m->udev_vcsa_monitor);
170 if (m->udev_button_monitor)
171 udev_monitor_unref(m->udev_button_monitor);
176 bus_verify_polkit_async_registry_free(m->polkit_registry);
178 sd_bus_unref(m->bus);
179 sd_event_unref(m->event);
181 strv_free(m->kill_only_users);
182 strv_free(m->kill_exclude_users);
184 strv_free(m->suspend_mode);
185 strv_free(m->suspend_state);
186 strv_free(m->hibernate_mode);
187 strv_free(m->hibernate_state);
188 strv_free(m->hybrid_sleep_mode);
189 strv_free(m->hybrid_sleep_state);
194 static int manager_enumerate_devices(Manager *m) {
195 struct udev_list_entry *item = NULL, *first = NULL;
196 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
201 /* Loads devices from udev and creates seats for them as
204 e = udev_enumerate_new(m->udev);
208 r = udev_enumerate_add_match_tag(e, "master-of-seat");
212 r = udev_enumerate_add_match_is_initialized(e);
216 r = udev_enumerate_scan_devices(e);
220 first = udev_enumerate_get_list_entry(e);
221 udev_list_entry_foreach(item, first) {
222 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
225 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
229 k = manager_process_seat_device(m, d);
237 static int manager_enumerate_buttons(Manager *m) {
238 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
239 struct udev_list_entry *item = NULL, *first = NULL;
244 /* Loads buttons from udev */
246 if (m->handle_power_key == HANDLE_IGNORE &&
247 m->handle_suspend_key == HANDLE_IGNORE &&
248 m->handle_hibernate_key == HANDLE_IGNORE &&
249 m->handle_lid_switch == HANDLE_IGNORE &&
250 m->handle_lid_switch_docked == HANDLE_IGNORE)
253 e = udev_enumerate_new(m->udev);
257 r = udev_enumerate_add_match_subsystem(e, "input");
261 r = udev_enumerate_add_match_tag(e, "power-switch");
265 r = udev_enumerate_add_match_is_initialized(e);
269 r = udev_enumerate_scan_devices(e);
273 first = udev_enumerate_get_list_entry(e);
274 udev_list_entry_foreach(item, first) {
275 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
278 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
282 k = manager_process_button_device(m, d);
290 static int manager_enumerate_seats(Manager *m) {
291 _cleanup_closedir_ DIR *d = NULL;
297 /* This loads data about seats stored on disk, but does not
298 * actually create any seats. Removes data of seats that no
301 d = opendir("/run/systemd/seats");
306 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
310 FOREACH_DIRENT(de, d, return -errno) {
314 if (!dirent_is_file(de))
317 s = hashmap_get(m->seats, de->d_name);
319 unlinkat(dirfd(d), de->d_name, 0);
331 static int manager_enumerate_linger_users(Manager *m) {
332 _cleanup_closedir_ DIR *d = NULL;
338 d = opendir("/var/lib/systemd/linger");
343 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
347 FOREACH_DIRENT(de, d, return -errno) {
350 if (!dirent_is_file(de))
353 k = manager_add_user_by_name(m, de->d_name, NULL);
355 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
363 static int manager_enumerate_users(Manager *m) {
364 _cleanup_closedir_ DIR *d = NULL;
370 /* Add lingering users */
371 r = manager_enumerate_linger_users(m);
373 /* Read in user data stored on disk */
374 d = opendir("/run/systemd/users");
379 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
383 FOREACH_DIRENT(de, d, return -errno) {
386 if (!dirent_is_file(de))
389 k = manager_add_user_by_name(m, de->d_name, &u);
391 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
397 user_add_to_gc_queue(u);
407 static int manager_enumerate_sessions(Manager *m) {
408 _cleanup_closedir_ DIR *d = NULL;
414 /* Read in session data stored on disk */
415 d = opendir("/run/systemd/sessions");
420 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
424 FOREACH_DIRENT(de, d, return -errno) {
428 if (!dirent_is_file(de))
431 if (!session_id_valid(de->d_name)) {
432 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
437 k = manager_add_session(m, de->d_name, &s);
439 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
445 session_add_to_gc_queue(s);
455 static int manager_enumerate_inhibitors(Manager *m) {
456 _cleanup_closedir_ DIR *d = NULL;
462 d = opendir("/run/systemd/inhibit");
467 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
471 FOREACH_DIRENT(de, d, return -errno) {
475 if (!dirent_is_file(de))
478 k = manager_add_inhibitor(m, de->d_name, &i);
480 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
485 k = inhibitor_load(i);
493 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
494 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
495 Manager *m = userdata;
499 d = udev_monitor_receive_device(m->udev_seat_monitor);
503 manager_process_seat_device(m, d);
507 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
508 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
509 Manager *m = userdata;
513 d = udev_monitor_receive_device(m->udev_device_monitor);
517 manager_process_seat_device(m, d);
521 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
522 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
523 Manager *m = userdata;
527 d = udev_monitor_receive_device(m->udev_button_monitor);
531 manager_process_button_device(m, d);
535 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
536 Manager *m = userdata;
540 assert(m->console_active_fd == fd);
542 seat_read_active_vt(m->seat0);
546 static int signal_agent_released(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
547 Manager *m = userdata;
556 r = sd_bus_message_read(message, "s", &cgroup);
558 bus_log_parse_error(r);
562 s = hashmap_get(m->sessions, cgroup);
565 log_warning("Session not found: %s", cgroup);
575 static int manager_connect_bus(Manager *m) {
576 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
582 r = sd_bus_default_system(&m->bus);
584 return log_error_errno(r, "Failed to connect to system bus: %m");
586 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
588 return log_error_errno(r, "Failed to add manager object vtable: %m");
590 r = sd_bus_add_match(m->bus, NULL,
592 "interface='org.freedesktop.systemd1.Agent',"
594 "path='/org/freedesktop/systemd1/agent'",
595 signal_agent_released, m);
597 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
599 return log_error_errno(r, "Failed to add seat object vtable: %m");
601 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
603 return log_error_errno(r, "Failed to add seat enumerator: %m");
605 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
607 return log_error_errno(r, "Failed to add session object vtable: %m");
609 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
611 return log_error_errno(r, "Failed to add session enumerator: %m");
613 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
615 return log_error_errno(r, "Failed to add user object vtable: %m");
617 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
619 return log_error_errno(r, "Failed to add user enumerator: %m");
621 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
623 return log_error_errno(r, "Failed to register name: %m");
625 r = sd_bus_attach_event(m->bus, m->event, 0);
627 return log_error_errno(r, "Failed to attach bus to event loop: %m");
632 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
634 Session *active, *iter;
637 * We got a VT-switch signal and we have to acknowledge it immediately.
638 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
639 * old user-space might run multiple sessions on a single VT, *sigh*.
640 * Therefore, we have to iterate all sessions and find one with a vtfd
641 * on the requested VT.
642 * As only VTs with active controllers have VT_PROCESS set, our current
643 * notion of the active VT might be wrong (for instance if the switch
644 * happens while we setup VT_PROCESS). Therefore, read the current VT
645 * first and then use s->active->vtnr as reference. Note that this is
646 * not racy, as no further VT-switch can happen as long as we're in
647 * synchronous VT_PROCESS mode.
651 seat_read_active_vt(m->seat0);
653 active = m->seat0->active;
654 if (!active || active->vtnr < 1) {
655 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
659 if (active->vtfd >= 0) {
660 session_leave_vt(active);
662 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
663 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
664 session_leave_vt(iter);
673 static int manager_setup_cgroup(Manager *m) {
674 _cleanup_free_ char *path = NULL;
679 /* 1. Determine hierarchy */
680 free(m->cgroup_root);
681 m->cgroup_root = NULL;
683 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &m->cgroup_root);
685 return log_error_errno(r, "Cannot determine cgroup we are running in: %m");
687 /* Make sure to store away the root value without trailing
688 * slash, even for the root dir, so that we can easily prepend
690 if (streq(m->cgroup_root, "/"))
691 m->cgroup_root[0] = 0;
694 r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, NULL, &path);
696 return log_error_errno(r, "Cannot find cgroup mount point: %m");
698 log_debug("Using cgroup controller " SYSTEMD_CGROUP_CONTROLLER ". File system hierarchy is at %s.", path);
700 /* 3. Install agent */
701 r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, SYSTEMD_CGROUP_AGENT_PATH);
703 log_warning_errno(r, "Failed to install release agent, ignoring: %m");
705 log_debug("Installed release agent.");
707 log_debug("Release agent already installed.");
709 /* 4. Make sure we are in the root cgroup */
710 r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, 0);
712 return log_error_errno(r, "Failed to create root cgroup hierarchy: %m");
714 /* 5. And pin it, so that it cannot be unmounted */
715 safe_close(m->pin_cgroupfs_fd);
717 m->pin_cgroupfs_fd = open(path, O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY|O_NONBLOCK);
718 if (m->pin_cgroupfs_fd < 0)
719 return log_error_errno(errno, "Failed to open pin file: %m");
724 static int manager_connect_console(Manager *m) {
728 assert(m->console_active_fd < 0);
730 /* On certain architectures (S390 and Xen, and containers),
731 /dev/tty0 does not exist, so don't fail if we can't open
733 if (access("/dev/tty0", F_OK) < 0)
736 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
737 if (m->console_active_fd < 0) {
739 /* On some systems the device node /dev/tty0 may exist
740 * even though /sys/class/tty/tty0 does not. */
744 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
748 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
750 log_error("Failed to watch foreground console");
755 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
756 * as VT-acquire signal. We ignore any acquire-events (yes, we still
757 * have to provide a valid signal-number for it!) and acknowledge all
758 * release events immediately.
761 if (SIGRTMIN + 1 > SIGRTMAX) {
762 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
766 r = ignore_signals(SIGRTMIN + 1, -1);
768 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
770 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
772 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
774 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
781 static int manager_connect_udev(Manager *m) {
785 assert(!m->udev_seat_monitor);
786 assert(!m->udev_device_monitor);
787 assert(!m->udev_vcsa_monitor);
788 assert(!m->udev_button_monitor);
790 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
791 if (!m->udev_seat_monitor)
794 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
798 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
802 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);
806 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
807 if (!m->udev_device_monitor)
810 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
814 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
818 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
822 r = udev_monitor_enable_receiving(m->udev_device_monitor);
826 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);
830 /* Don't watch keys if nobody cares */
831 if (m->handle_power_key != HANDLE_IGNORE ||
832 m->handle_suspend_key != HANDLE_IGNORE ||
833 m->handle_hibernate_key != HANDLE_IGNORE ||
834 m->handle_lid_switch != HANDLE_IGNORE ||
835 m->handle_lid_switch_docked != HANDLE_IGNORE) {
837 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
838 if (!m->udev_button_monitor)
841 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
845 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
849 r = udev_monitor_enable_receiving(m->udev_button_monitor);
853 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);
861 void manager_gc(Manager *m, bool drop_not_started) {
868 while ((seat = m->seat_gc_queue)) {
869 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
870 seat->in_gc_queue = false;
872 if (!seat_check_gc(seat, drop_not_started)) {
873 seat_stop(seat, false);
878 while ((session = m->session_gc_queue)) {
879 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
880 session->in_gc_queue = false;
882 /* First, if we are not closing yet, initiate stopping */
883 if (!session_check_gc(session, drop_not_started) &&
884 session_get_state(session) != SESSION_CLOSING)
885 session_stop(session, false);
887 /* Normally, this should make the session busy again,
888 * if it doesn't then let's get rid of it
890 if (!session_check_gc(session, drop_not_started)) {
891 session_finalize(session);
892 session_free(session);
896 while ((user = m->user_gc_queue)) {
897 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
898 user->in_gc_queue = false;
900 /* First step: queue stop jobs */
901 if (!user_check_gc(user, drop_not_started))
902 user_stop(user, false);
904 /* Second step: finalize user */
905 if (!user_check_gc(user, drop_not_started)) {
912 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
913 Manager *m = userdata;
914 struct dual_timestamp since;
920 if (m->idle_action == HANDLE_IGNORE ||
921 m->idle_action_usec <= 0)
924 n = now(CLOCK_MONOTONIC);
926 r = manager_get_idle_hint(m, &since);
928 /* Not idle. Let's check if after a timeout it might be idle then. */
929 elapse = n + m->idle_action_usec;
931 /* Idle! Let's see if it's time to do something, or if
932 * we shall sleep for longer. */
934 if (n >= since.monotonic + m->idle_action_usec &&
935 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
936 log_info("System idle. Taking action.");
938 manager_handle_action(m, 0, m->idle_action, false, false);
939 m->idle_action_not_before_usec = n;
942 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
945 if (!m->idle_action_event_source) {
947 r = sd_event_add_time(
949 &m->idle_action_event_source,
951 elapse, USEC_PER_SEC*30,
952 manager_dispatch_idle_action, m);
954 return log_error_errno(r, "Failed to add idle event source: %m");
956 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
958 return log_error_errno(r, "Failed to set idle event source priority: %m");
960 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
962 return log_error_errno(r, "Failed to set idle event timer: %m");
964 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
966 return log_error_errno(r, "Failed to enable idle event timer: %m");
972 int manager_startup(Manager *m) {
978 Inhibitor *inhibitor;
984 r = manager_setup_cgroup(m);
988 /* Connect to console */
989 r = manager_connect_console(m);
993 /* Connect to udev */
994 r = manager_connect_udev(m);
996 return log_error_errno(r, "Failed to create udev watchers: %m");
998 /* Connect to the bus */
999 r = manager_connect_bus(m);
1003 /* Instantiate magic seat 0 */
1004 r = manager_add_seat(m, "seat0", &m->seat0);
1006 return log_error_errno(r, "Failed to add seat0: %m");
1008 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1010 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1012 /* Deserialize state */
1013 r = manager_enumerate_devices(m);
1015 log_warning_errno(r, "Device enumeration failed: %m");
1017 r = manager_enumerate_seats(m);
1019 log_warning_errno(r, "Seat enumeration failed: %m");
1021 r = manager_enumerate_users(m);
1023 log_warning_errno(r, "User enumeration failed: %m");
1025 r = manager_enumerate_sessions(m);
1027 log_warning_errno(r, "Session enumeration failed: %m");
1029 r = manager_enumerate_inhibitors(m);
1031 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1033 r = manager_enumerate_buttons(m);
1035 log_warning_errno(r, "Button enumeration failed: %m");
1037 /* Remove stale objects before we start them */
1038 manager_gc(m, false);
1040 /* And start everything */
1041 HASHMAP_FOREACH(seat, m->seats, i)
1044 HASHMAP_FOREACH(user, m->users, i)
1047 HASHMAP_FOREACH(session, m->sessions, i)
1048 session_start(session);
1050 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1051 inhibitor_start(inhibitor);
1053 HASHMAP_FOREACH(button, m->buttons, i)
1054 button_check_switches(button);
1056 manager_dispatch_idle_action(NULL, 0, m);
1061 int manager_run(Manager *m) {
1067 usec_t us = (uint64_t) -1;
1069 r = sd_event_get_state(m->event);
1072 if (r == SD_EVENT_FINISHED)
1075 manager_gc(m, true);
1077 if (manager_dispatch_delayed(m) > 0)
1080 if (m->action_what != 0) {
1083 x = now(CLOCK_MONOTONIC);
1084 y = m->action_timestamp + m->inhibit_delay_max;
1086 us = x >= y ? 0 : y - x;
1089 r = sd_event_run(m->event, us);
1095 static int manager_parse_config_file(Manager *m) {
1096 const char *unit, *logind_conf, *sections;
1098 bool relaxed, allow_include, warn;
1103 logind_conf = getenv("ELOGIND_CONF_FILE");
1105 logind_conf = PKGSYSCONFDIR "/logind.conf";
1106 sections = "Login\0Sleep\0";
1109 allow_include = false;
1112 return config_parse(unit, logind_conf, file, sections,
1113 config_item_perf_lookup, logind_gperf_lookup,
1114 relaxed, allow_include, warn, m);
1117 int main(int argc, char *argv[]) {
1121 log_set_target(LOG_TARGET_AUTO);
1122 log_set_facility(LOG_AUTH);
1123 log_parse_environment();
1129 log_error("This program takes no arguments.");
1134 /* Always create the directories people can create inotify
1135 * watches in. Note that some applications might check for the
1136 * existence of /run/systemd/seats/ to determine whether
1137 * logind is available, so please always make sure this check
1139 mkdir_label("/run/systemd/seats", 0755);
1140 mkdir_label("/run/systemd/users", 0755);
1141 mkdir_label("/run/systemd/sessions", 0755);
1142 mkdir_label("/run/systemd/machines", 0755);
1150 manager_parse_config_file(m);
1152 r = manager_startup(m);
1154 log_error_errno(r, "Failed to fully start up daemon: %m");
1158 log_debug("logind running as pid "PID_FMT, getpid());
1162 "STATUS=Processing requests...");
1166 log_debug("logind stopped as pid "PID_FMT, getpid());
1171 "STATUS=Shutting down...");
1176 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;