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 manager_connect_bus(Manager *m) {
546 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
552 r = sd_bus_default_system(&m->bus);
554 return log_error_errno(r, "Failed to connect to system bus: %m");
556 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
558 return log_error_errno(r, "Failed to add manager object vtable: %m");
560 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
562 return log_error_errno(r, "Failed to add seat object vtable: %m");
564 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
566 return log_error_errno(r, "Failed to add seat enumerator: %m");
568 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
570 return log_error_errno(r, "Failed to add session object vtable: %m");
572 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
574 return log_error_errno(r, "Failed to add session enumerator: %m");
576 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
578 return log_error_errno(r, "Failed to add user object vtable: %m");
580 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
582 return log_error_errno(r, "Failed to add user enumerator: %m");
584 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
586 return log_error_errno(r, "Failed to register name: %m");
588 r = sd_bus_attach_event(m->bus, m->event, 0);
590 return log_error_errno(r, "Failed to attach bus to event loop: %m");
595 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
597 Session *active, *iter;
600 * We got a VT-switch signal and we have to acknowledge it immediately.
601 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
602 * old user-space might run multiple sessions on a single VT, *sigh*.
603 * Therefore, we have to iterate all sessions and find one with a vtfd
604 * on the requested VT.
605 * As only VTs with active controllers have VT_PROCESS set, our current
606 * notion of the active VT might be wrong (for instance if the switch
607 * happens while we setup VT_PROCESS). Therefore, read the current VT
608 * first and then use s->active->vtnr as reference. Note that this is
609 * not racy, as no further VT-switch can happen as long as we're in
610 * synchronous VT_PROCESS mode.
614 seat_read_active_vt(m->seat0);
616 active = m->seat0->active;
617 if (!active || active->vtnr < 1) {
618 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
622 if (active->vtfd >= 0) {
623 session_leave_vt(active);
625 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
626 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
627 session_leave_vt(iter);
636 static int manager_setup_cgroup(Manager *m) {
637 _cleanup_free_ char *path = NULL;
642 /* 1. Determine hierarchy */
643 free(m->cgroup_root);
644 m->cgroup_root = NULL;
646 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &m->cgroup_root);
648 return log_error_errno(r, "Cannot determine cgroup we are running in: %m");
650 /* Make sure to store away the root value without trailing
651 * slash, even for the root dir, so that we can easily prepend
653 if (streq(m->cgroup_root, "/"))
654 m->cgroup_root[0] = 0;
657 r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, NULL, &path);
659 return log_error_errno(r, "Cannot find cgroup mount point: %m");
661 log_debug("Using cgroup controller " SYSTEMD_CGROUP_CONTROLLER ". File system hierarchy is at %s.", path);
663 /* 3. Install agent */
664 r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, SYSTEMD_CGROUP_AGENT_PATH);
666 log_warning_errno(r, "Failed to install release agent, ignoring: %m");
668 log_debug("Installed release agent.");
670 log_debug("Release agent already installed.");
672 /* 4. Make sure we are in the root cgroup */
673 r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, 0);
675 return log_error_errno(r, "Failed to create root cgroup hierarchy: %m");
677 /* 5. And pin it, so that it cannot be unmounted */
678 safe_close(m->pin_cgroupfs_fd);
680 m->pin_cgroupfs_fd = open(path, O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY|O_NONBLOCK);
681 if (m->pin_cgroupfs_fd < 0)
682 return log_error_errno(errno, "Failed to open pin file: %m");
687 static int manager_connect_console(Manager *m) {
691 assert(m->console_active_fd < 0);
693 /* On certain architectures (S390 and Xen, and containers),
694 /dev/tty0 does not exist, so don't fail if we can't open
696 if (access("/dev/tty0", F_OK) < 0)
699 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
700 if (m->console_active_fd < 0) {
702 /* On some systems the device node /dev/tty0 may exist
703 * even though /sys/class/tty/tty0 does not. */
707 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
711 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
713 log_error("Failed to watch foreground console");
718 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
719 * as VT-acquire signal. We ignore any acquire-events (yes, we still
720 * have to provide a valid signal-number for it!) and acknowledge all
721 * release events immediately.
724 if (SIGRTMIN + 1 > SIGRTMAX) {
725 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
729 r = ignore_signals(SIGRTMIN + 1, -1);
731 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
733 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
735 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
737 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
744 static int manager_connect_udev(Manager *m) {
748 assert(!m->udev_seat_monitor);
749 assert(!m->udev_device_monitor);
750 assert(!m->udev_vcsa_monitor);
751 assert(!m->udev_button_monitor);
753 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
754 if (!m->udev_seat_monitor)
757 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
761 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
765 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);
769 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
770 if (!m->udev_device_monitor)
773 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
777 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
781 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
785 r = udev_monitor_enable_receiving(m->udev_device_monitor);
789 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);
793 /* Don't watch keys if nobody cares */
794 if (m->handle_power_key != HANDLE_IGNORE ||
795 m->handle_suspend_key != HANDLE_IGNORE ||
796 m->handle_hibernate_key != HANDLE_IGNORE ||
797 m->handle_lid_switch != HANDLE_IGNORE ||
798 m->handle_lid_switch_docked != HANDLE_IGNORE) {
800 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
801 if (!m->udev_button_monitor)
804 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
808 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
812 r = udev_monitor_enable_receiving(m->udev_button_monitor);
816 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);
824 void manager_gc(Manager *m, bool drop_not_started) {
831 while ((seat = m->seat_gc_queue)) {
832 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
833 seat->in_gc_queue = false;
835 if (!seat_check_gc(seat, drop_not_started)) {
836 seat_stop(seat, false);
841 while ((session = m->session_gc_queue)) {
842 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
843 session->in_gc_queue = false;
845 /* First, if we are not closing yet, initiate stopping */
846 if (!session_check_gc(session, drop_not_started) &&
847 session_get_state(session) != SESSION_CLOSING)
848 session_stop(session, false);
850 /* Normally, this should make the session busy again,
851 * if it doesn't then let's get rid of it
853 if (!session_check_gc(session, drop_not_started)) {
854 session_finalize(session);
855 session_free(session);
859 while ((user = m->user_gc_queue)) {
860 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
861 user->in_gc_queue = false;
863 /* First step: queue stop jobs */
864 if (!user_check_gc(user, drop_not_started))
865 user_stop(user, false);
867 /* Second step: finalize user */
868 if (!user_check_gc(user, drop_not_started)) {
875 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
876 Manager *m = userdata;
877 struct dual_timestamp since;
883 if (m->idle_action == HANDLE_IGNORE ||
884 m->idle_action_usec <= 0)
887 n = now(CLOCK_MONOTONIC);
889 r = manager_get_idle_hint(m, &since);
891 /* Not idle. Let's check if after a timeout it might be idle then. */
892 elapse = n + m->idle_action_usec;
894 /* Idle! Let's see if it's time to do something, or if
895 * we shall sleep for longer. */
897 if (n >= since.monotonic + m->idle_action_usec &&
898 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
899 log_info("System idle. Taking action.");
901 manager_handle_action(m, 0, m->idle_action, false, false);
902 m->idle_action_not_before_usec = n;
905 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
908 if (!m->idle_action_event_source) {
910 r = sd_event_add_time(
912 &m->idle_action_event_source,
914 elapse, USEC_PER_SEC*30,
915 manager_dispatch_idle_action, m);
917 return log_error_errno(r, "Failed to add idle event source: %m");
919 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
921 return log_error_errno(r, "Failed to set idle event source priority: %m");
923 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
925 return log_error_errno(r, "Failed to set idle event timer: %m");
927 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
929 return log_error_errno(r, "Failed to enable idle event timer: %m");
935 int manager_startup(Manager *m) {
941 Inhibitor *inhibitor;
947 r = manager_setup_cgroup(m);
951 /* Connect to console */
952 r = manager_connect_console(m);
956 /* Connect to udev */
957 r = manager_connect_udev(m);
959 return log_error_errno(r, "Failed to create udev watchers: %m");
961 /* Connect to the bus */
962 r = manager_connect_bus(m);
966 /* Instantiate magic seat 0 */
967 r = manager_add_seat(m, "seat0", &m->seat0);
969 return log_error_errno(r, "Failed to add seat0: %m");
971 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
973 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
975 /* Deserialize state */
976 r = manager_enumerate_devices(m);
978 log_warning_errno(r, "Device enumeration failed: %m");
980 r = manager_enumerate_seats(m);
982 log_warning_errno(r, "Seat enumeration failed: %m");
984 r = manager_enumerate_users(m);
986 log_warning_errno(r, "User enumeration failed: %m");
988 r = manager_enumerate_sessions(m);
990 log_warning_errno(r, "Session enumeration failed: %m");
992 r = manager_enumerate_inhibitors(m);
994 log_warning_errno(r, "Inhibitor enumeration failed: %m");
996 r = manager_enumerate_buttons(m);
998 log_warning_errno(r, "Button enumeration failed: %m");
1000 /* Remove stale objects before we start them */
1001 manager_gc(m, false);
1003 /* And start everything */
1004 HASHMAP_FOREACH(seat, m->seats, i)
1007 HASHMAP_FOREACH(user, m->users, i)
1010 HASHMAP_FOREACH(session, m->sessions, i)
1011 session_start(session);
1013 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1014 inhibitor_start(inhibitor);
1016 HASHMAP_FOREACH(button, m->buttons, i)
1017 button_check_switches(button);
1019 manager_dispatch_idle_action(NULL, 0, m);
1024 int manager_run(Manager *m) {
1030 usec_t us = (uint64_t) -1;
1032 r = sd_event_get_state(m->event);
1035 if (r == SD_EVENT_FINISHED)
1038 manager_gc(m, true);
1040 if (manager_dispatch_delayed(m) > 0)
1043 if (m->action_what != 0) {
1046 x = now(CLOCK_MONOTONIC);
1047 y = m->action_timestamp + m->inhibit_delay_max;
1049 us = x >= y ? 0 : y - x;
1052 r = sd_event_run(m->event, us);
1058 static int manager_parse_config_file(Manager *m) {
1059 const char *unit, *logind_conf, *sections;
1061 bool relaxed, allow_include, warn;
1066 logind_conf = getenv("ELOGIND_CONF_FILE");
1068 logind_conf = PKGSYSCONFDIR "/logind.conf";
1069 sections = "Login\0Sleep\0";
1072 allow_include = false;
1075 return config_parse(unit, logind_conf, file, sections,
1076 config_item_perf_lookup, logind_gperf_lookup,
1077 relaxed, allow_include, warn, m);
1080 int main(int argc, char *argv[]) {
1084 log_set_target(LOG_TARGET_AUTO);
1085 log_set_facility(LOG_AUTH);
1086 log_parse_environment();
1092 log_error("This program takes no arguments.");
1097 /* Always create the directories people can create inotify
1098 * watches in. Note that some applications might check for the
1099 * existence of /run/systemd/seats/ to determine whether
1100 * logind is available, so please always make sure this check
1102 mkdir_label("/run/systemd/seats", 0755);
1103 mkdir_label("/run/systemd/users", 0755);
1104 mkdir_label("/run/systemd/sessions", 0755);
1105 mkdir_label("/run/systemd/machines", 0755);
1113 manager_parse_config_file(m);
1115 r = manager_startup(m);
1117 log_error_errno(r, "Failed to fully start up daemon: %m");
1121 log_debug("logind running as pid "PID_FMT, getpid());
1125 "STATUS=Processing requests...");
1129 log_debug("logind stopped as pid "PID_FMT, getpid());
1134 "STATUS=Shutting down...");
1139 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;