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 <sys/timerfd.h>
30 #include "sd-daemon.h"
32 #include "conf-parser.h"
35 #include "bus-error.h"
37 #include "udev-util.h"
39 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;
61 m->idle_action_usec = 30 * USEC_PER_MINUTE;
62 m->idle_action = HANDLE_IGNORE;
63 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
65 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
67 m->devices = hashmap_new(&string_hash_ops);
68 m->seats = hashmap_new(&string_hash_ops);
69 m->sessions = hashmap_new(&string_hash_ops);
70 m->users = hashmap_new(NULL);
71 m->inhibitors = hashmap_new(&string_hash_ops);
72 m->buttons = hashmap_new(&string_hash_ops);
74 m->user_units = hashmap_new(&string_hash_ops);
75 m->session_units = hashmap_new(&string_hash_ops);
77 m->busnames = set_new(&string_hash_ops);
79 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->busnames ||
80 !m->user_units || !m->session_units)
83 m->kill_exclude_users = strv_new("root", NULL);
84 if (!m->kill_exclude_users)
91 r = sd_event_default(&m->event);
95 sd_event_set_watchdog(m->event, true);
104 void manager_free(Manager *m) {
114 while ((session = hashmap_first(m->sessions)))
115 session_free(session);
117 while ((u = hashmap_first(m->users)))
120 while ((d = hashmap_first(m->devices)))
123 while ((s = hashmap_first(m->seats)))
126 while ((i = hashmap_first(m->inhibitors)))
129 while ((b = hashmap_first(m->buttons)))
132 hashmap_free(m->devices);
133 hashmap_free(m->seats);
134 hashmap_free(m->sessions);
135 hashmap_free(m->users);
136 hashmap_free(m->inhibitors);
137 hashmap_free(m->buttons);
139 hashmap_free(m->user_units);
140 hashmap_free(m->session_units);
142 set_free_free(m->busnames);
144 sd_event_source_unref(m->idle_action_event_source);
146 sd_event_source_unref(m->console_active_event_source);
147 sd_event_source_unref(m->udev_seat_event_source);
148 sd_event_source_unref(m->udev_device_event_source);
149 sd_event_source_unref(m->udev_vcsa_event_source);
150 sd_event_source_unref(m->udev_button_event_source);
151 sd_event_source_unref(m->lid_switch_ignore_event_source);
153 safe_close(m->console_active_fd);
155 if (m->udev_seat_monitor)
156 udev_monitor_unref(m->udev_seat_monitor);
157 if (m->udev_device_monitor)
158 udev_monitor_unref(m->udev_device_monitor);
159 if (m->udev_vcsa_monitor)
160 udev_monitor_unref(m->udev_vcsa_monitor);
161 if (m->udev_button_monitor)
162 udev_monitor_unref(m->udev_button_monitor);
167 bus_verify_polkit_async_registry_free(m->polkit_registry);
169 sd_bus_unref(m->bus);
170 sd_event_unref(m->event);
172 safe_close(m->reserve_vt_fd);
174 strv_free(m->kill_only_users);
175 strv_free(m->kill_exclude_users);
181 static int manager_enumerate_devices(Manager *m) {
182 struct udev_list_entry *item = NULL, *first = NULL;
183 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
188 /* Loads devices from udev and creates seats for them as
191 e = udev_enumerate_new(m->udev);
195 r = udev_enumerate_add_match_tag(e, "master-of-seat");
199 r = udev_enumerate_add_match_is_initialized(e);
203 r = udev_enumerate_scan_devices(e);
207 first = udev_enumerate_get_list_entry(e);
208 udev_list_entry_foreach(item, first) {
209 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
212 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
216 k = manager_process_seat_device(m, d);
224 static int manager_enumerate_buttons(Manager *m) {
225 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
226 struct udev_list_entry *item = NULL, *first = NULL;
231 /* Loads buttons from udev */
233 if (m->handle_power_key == HANDLE_IGNORE &&
234 m->handle_suspend_key == HANDLE_IGNORE &&
235 m->handle_hibernate_key == HANDLE_IGNORE &&
236 m->handle_lid_switch == HANDLE_IGNORE &&
237 m->handle_lid_switch_docked == HANDLE_IGNORE)
240 e = udev_enumerate_new(m->udev);
244 r = udev_enumerate_add_match_subsystem(e, "input");
248 r = udev_enumerate_add_match_tag(e, "power-switch");
252 r = udev_enumerate_add_match_is_initialized(e);
256 r = udev_enumerate_scan_devices(e);
260 first = udev_enumerate_get_list_entry(e);
261 udev_list_entry_foreach(item, first) {
262 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
265 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
269 k = manager_process_button_device(m, d);
277 static int manager_enumerate_seats(Manager *m) {
278 _cleanup_closedir_ DIR *d = NULL;
284 /* This loads data about seats stored on disk, but does not
285 * actually create any seats. Removes data of seats that no
288 d = opendir("/run/systemd/seats");
293 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
297 FOREACH_DIRENT(de, d, return -errno) {
301 if (!dirent_is_file(de))
304 s = hashmap_get(m->seats, de->d_name);
306 unlinkat(dirfd(d), de->d_name, 0);
318 static int manager_enumerate_linger_users(Manager *m) {
319 _cleanup_closedir_ DIR *d = NULL;
325 d = opendir("/var/lib/systemd/linger");
330 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
334 FOREACH_DIRENT(de, d, return -errno) {
337 if (!dirent_is_file(de))
340 k = manager_add_user_by_name(m, de->d_name, NULL);
342 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
350 static int manager_enumerate_users(Manager *m) {
351 _cleanup_closedir_ DIR *d = NULL;
357 /* Add lingering users */
358 r = manager_enumerate_linger_users(m);
360 /* Read in user data stored on disk */
361 d = opendir("/run/systemd/users");
366 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
370 FOREACH_DIRENT(de, d, return -errno) {
373 if (!dirent_is_file(de))
376 k = manager_add_user_by_name(m, de->d_name, &u);
378 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
384 user_add_to_gc_queue(u);
394 static int manager_enumerate_sessions(Manager *m) {
395 _cleanup_closedir_ DIR *d = NULL;
401 /* Read in session data stored on disk */
402 d = opendir("/run/systemd/sessions");
407 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
411 FOREACH_DIRENT(de, d, return -errno) {
415 if (!dirent_is_file(de))
418 if (!session_id_valid(de->d_name)) {
419 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
424 k = manager_add_session(m, de->d_name, &s);
426 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
432 session_add_to_gc_queue(s);
442 static int manager_enumerate_inhibitors(Manager *m) {
443 _cleanup_closedir_ DIR *d = NULL;
449 d = opendir("/run/systemd/inhibit");
454 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
458 FOREACH_DIRENT(de, d, return -errno) {
462 if (!dirent_is_file(de))
465 k = manager_add_inhibitor(m, de->d_name, &i);
467 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
472 k = inhibitor_load(i);
480 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
481 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
482 Manager *m = userdata;
486 d = udev_monitor_receive_device(m->udev_seat_monitor);
490 manager_process_seat_device(m, d);
494 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
495 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
496 Manager *m = userdata;
500 d = udev_monitor_receive_device(m->udev_device_monitor);
504 manager_process_seat_device(m, d);
508 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
509 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
510 Manager *m = userdata;
515 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
519 name = udev_device_get_sysname(d);
521 /* Whenever a VCSA device is removed try to reallocate our
522 * VTs, to make sure our auto VTs never go away. */
524 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
525 seat_preallocate_vts(m->seat0);
530 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
531 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
532 Manager *m = userdata;
536 d = udev_monitor_receive_device(m->udev_button_monitor);
540 manager_process_button_device(m, d);
544 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
545 Manager *m = userdata;
549 assert(m->console_active_fd == fd);
551 seat_read_active_vt(m->seat0);
555 static int manager_reserve_vt(Manager *m) {
556 _cleanup_free_ char *p = NULL;
560 if (m->reserve_vt <= 0)
563 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
566 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
567 if (m->reserve_vt_fd < 0) {
569 /* Don't complain on VT-less systems */
571 log_warning_errno(errno, "Failed to pin reserved VT: %m");
578 static int manager_connect_bus(Manager *m) {
579 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
585 r = sd_bus_default_system(&m->bus);
587 return log_error_errno(r, "Failed to connect to system bus: %m");
589 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
591 return log_error_errno(r, "Failed to add manager object vtable: %m");
593 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
595 return log_error_errno(r, "Failed to add seat object vtable: %m");
597 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
599 return log_error_errno(r, "Failed to add seat enumerator: %m");
601 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
603 return log_error_errno(r, "Failed to add session object vtable: %m");
605 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
607 return log_error_errno(r, "Failed to add session enumerator: %m");
609 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
611 return log_error_errno(r, "Failed to add user object vtable: %m");
613 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
615 return log_error_errno(r, "Failed to add user enumerator: %m");
617 r = sd_bus_add_match(m->bus,
620 "sender='org.freedesktop.DBus',"
621 "interface='org.freedesktop.DBus',"
622 "member='NameOwnerChanged',"
623 "path='/org/freedesktop/DBus'",
624 match_name_owner_changed, m);
626 return log_error_errno(r, "Failed to add match for NameOwnerChanged: %m");
628 r = sd_bus_add_match(m->bus,
631 "sender='org.freedesktop.systemd1',"
632 "interface='org.freedesktop.systemd1.Manager',"
633 "member='JobRemoved',"
634 "path='/org/freedesktop/systemd1'",
635 match_job_removed, m);
637 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
639 r = sd_bus_add_match(m->bus,
642 "sender='org.freedesktop.systemd1',"
643 "interface='org.freedesktop.systemd1.Manager',"
644 "member='UnitRemoved',"
645 "path='/org/freedesktop/systemd1'",
646 match_unit_removed, m);
648 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
650 r = sd_bus_add_match(m->bus,
653 "sender='org.freedesktop.systemd1',"
654 "interface='org.freedesktop.DBus.Properties',"
655 "member='PropertiesChanged'",
656 match_properties_changed, m);
658 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
660 r = sd_bus_add_match(m->bus,
663 "sender='org.freedesktop.systemd1',"
664 "interface='org.freedesktop.systemd1.Manager',"
665 "member='Reloading',"
666 "path='/org/freedesktop/systemd1'",
669 return log_error_errno(r, "Failed to add match for Reloading: %m");
671 r = sd_bus_call_method(
673 "org.freedesktop.systemd1",
674 "/org/freedesktop/systemd1",
675 "org.freedesktop.systemd1.Manager",
680 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
684 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
686 return log_error_errno(r, "Failed to register name: %m");
688 r = sd_bus_attach_event(m->bus, m->event, 0);
690 return log_error_errno(r, "Failed to attach bus to event loop: %m");
695 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
697 Session *active, *iter;
700 * We got a VT-switch signal and we have to acknowledge it immediately.
701 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
702 * old user-space might run multiple sessions on a single VT, *sigh*.
703 * Therefore, we have to iterate all sessions and find one with a vtfd
704 * on the requested VT.
705 * As only VTs with active controllers have VT_PROCESS set, our current
706 * notion of the active VT might be wrong (for instance if the switch
707 * happens while we setup VT_PROCESS). Therefore, read the current VT
708 * first and then use s->active->vtnr as reference. Note that this is
709 * not racy, as no further VT-switch can happen as long as we're in
710 * synchronous VT_PROCESS mode.
714 seat_read_active_vt(m->seat0);
716 active = m->seat0->active;
717 if (!active || active->vtnr < 1) {
718 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
722 if (active->vtfd >= 0) {
723 session_leave_vt(active);
725 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
726 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
727 session_leave_vt(iter);
736 static int manager_connect_console(Manager *m) {
740 assert(m->console_active_fd < 0);
742 /* On certain architectures (S390 and Xen, and containers),
743 /dev/tty0 does not exist, so don't fail if we can't open
745 if (access("/dev/tty0", F_OK) < 0)
748 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
749 if (m->console_active_fd < 0) {
751 /* On some systems the device node /dev/tty0 may exist
752 * even though /sys/class/tty/tty0 does not. */
756 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
760 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
762 log_error("Failed to watch foreground console");
767 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
768 * as VT-acquire signal. We ignore any acquire-events (yes, we still
769 * have to provide a valid signal-number for it!) and acknowledge all
770 * release events immediately.
773 if (SIGRTMIN + 1 > SIGRTMAX) {
774 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
778 r = ignore_signals(SIGRTMIN + 1, -1);
780 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
782 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
784 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
786 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
793 static int manager_connect_udev(Manager *m) {
797 assert(!m->udev_seat_monitor);
798 assert(!m->udev_device_monitor);
799 assert(!m->udev_vcsa_monitor);
800 assert(!m->udev_button_monitor);
802 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
803 if (!m->udev_seat_monitor)
806 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
810 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
814 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);
818 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
819 if (!m->udev_device_monitor)
822 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
826 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
830 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
834 r = udev_monitor_enable_receiving(m->udev_device_monitor);
838 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);
842 /* Don't watch keys if nobody cares */
843 if (m->handle_power_key != HANDLE_IGNORE ||
844 m->handle_suspend_key != HANDLE_IGNORE ||
845 m->handle_hibernate_key != HANDLE_IGNORE ||
846 m->handle_lid_switch != HANDLE_IGNORE ||
847 m->handle_lid_switch_docked != HANDLE_IGNORE) {
849 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
850 if (!m->udev_button_monitor)
853 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
857 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
861 r = udev_monitor_enable_receiving(m->udev_button_monitor);
865 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);
870 /* Don't bother watching VCSA devices, if nobody cares */
871 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
873 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
874 if (!m->udev_vcsa_monitor)
877 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
881 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
885 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);
893 void manager_gc(Manager *m, bool drop_not_started) {
900 while ((seat = m->seat_gc_queue)) {
901 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
902 seat->in_gc_queue = false;
904 if (!seat_check_gc(seat, drop_not_started)) {
905 seat_stop(seat, false);
910 while ((session = m->session_gc_queue)) {
911 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
912 session->in_gc_queue = false;
914 /* First, if we are not closing yet, initiate stopping */
915 if (!session_check_gc(session, drop_not_started) &&
916 session_get_state(session) != SESSION_CLOSING)
917 session_stop(session, false);
919 /* Normally, this should make the session busy again,
920 * if it doesn't then let's get rid of it
922 if (!session_check_gc(session, drop_not_started)) {
923 session_finalize(session);
924 session_free(session);
928 while ((user = m->user_gc_queue)) {
929 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
930 user->in_gc_queue = false;
932 /* First step: queue stop jobs */
933 if (!user_check_gc(user, drop_not_started))
934 user_stop(user, false);
936 /* Second step: finalize user */
937 if (!user_check_gc(user, drop_not_started)) {
944 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
945 Manager *m = userdata;
946 struct dual_timestamp since;
952 if (m->idle_action == HANDLE_IGNORE ||
953 m->idle_action_usec <= 0)
956 n = now(CLOCK_MONOTONIC);
958 r = manager_get_idle_hint(m, &since);
960 /* Not idle. Let's check if after a timeout it might be idle then. */
961 elapse = n + m->idle_action_usec;
963 /* Idle! Let's see if it's time to do something, or if
964 * we shall sleep for longer. */
966 if (n >= since.monotonic + m->idle_action_usec &&
967 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
968 log_info("System idle. Taking action.");
970 manager_handle_action(m, 0, m->idle_action, false, false);
971 m->idle_action_not_before_usec = n;
974 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
977 if (!m->idle_action_event_source) {
979 r = sd_event_add_time(
981 &m->idle_action_event_source,
983 elapse, USEC_PER_SEC*30,
984 manager_dispatch_idle_action, m);
986 return log_error_errno(r, "Failed to add idle event source: %m");
988 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
990 return log_error_errno(r, "Failed to set idle event source priority: %m");
992 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
994 return log_error_errno(r, "Failed to set idle event timer: %m");
996 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
998 return log_error_errno(r, "Failed to enable idle event timer: %m");
1004 int manager_startup(Manager *m) {
1010 Inhibitor *inhibitor;
1015 /* Connect to console */
1016 r = manager_connect_console(m);
1020 /* Connect to udev */
1021 r = manager_connect_udev(m);
1023 return log_error_errno(r, "Failed to create udev watchers: %m");
1025 /* Connect to the bus */
1026 r = manager_connect_bus(m);
1030 /* Instantiate magic seat 0 */
1031 r = manager_add_seat(m, "seat0", &m->seat0);
1033 return log_error_errno(r, "Failed to add seat0: %m");
1035 r = manager_set_lid_switch_ignore(m, 0 + IGNORE_LID_SWITCH_STARTUP_USEC);
1037 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1039 /* Deserialize state */
1040 r = manager_enumerate_devices(m);
1042 log_warning_errno(r, "Device enumeration failed: %m");
1044 r = manager_enumerate_seats(m);
1046 log_warning_errno(r, "Seat enumeration failed: %m");
1048 r = manager_enumerate_users(m);
1050 log_warning_errno(r, "User enumeration failed: %m");
1052 r = manager_enumerate_sessions(m);
1054 log_warning_errno(r, "Session enumeration failed: %m");
1056 r = manager_enumerate_inhibitors(m);
1058 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1060 r = manager_enumerate_buttons(m);
1062 log_warning_errno(r, "Button enumeration failed: %m");
1064 /* Remove stale objects before we start them */
1065 manager_gc(m, false);
1067 /* Reserve the special reserved VT */
1068 manager_reserve_vt(m);
1070 /* And start everything */
1071 HASHMAP_FOREACH(seat, m->seats, i)
1074 HASHMAP_FOREACH(user, m->users, i)
1077 HASHMAP_FOREACH(session, m->sessions, i)
1078 session_start(session);
1080 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1081 inhibitor_start(inhibitor);
1083 HASHMAP_FOREACH(button, m->buttons, i)
1084 button_check_switches(button);
1086 manager_dispatch_idle_action(NULL, 0, m);
1091 int manager_run(Manager *m) {
1097 usec_t us = (uint64_t) -1;
1099 r = sd_event_get_state(m->event);
1102 if (r == SD_EVENT_FINISHED)
1105 manager_gc(m, true);
1107 if (manager_dispatch_delayed(m) > 0)
1110 if (m->action_what != 0 && !m->action_job) {
1113 x = now(CLOCK_MONOTONIC);
1114 y = m->action_timestamp + m->inhibit_delay_max;
1116 us = x >= y ? 0 : y - x;
1119 r = sd_event_run(m->event, us);
1125 static int manager_parse_config_file(Manager *m) {
1128 return config_parse_many("/etc/systemd/logind.conf",
1129 CONF_DIRS_NULSTR("systemd/logind.conf"),
1131 config_item_perf_lookup, logind_gperf_lookup,
1135 int main(int argc, char *argv[]) {
1139 log_set_target(LOG_TARGET_AUTO);
1140 log_set_facility(LOG_AUTH);
1141 log_parse_environment();
1147 log_error("This program takes no arguments.");
1152 /* Always create the directories people can create inotify
1153 * watches in. Note that some applications might check for the
1154 * existence of /run/systemd/seats/ to determine whether
1155 * logind is available, so please always make sure this check
1157 mkdir_label("/run/systemd/seats", 0755);
1158 mkdir_label("/run/systemd/users", 0755);
1159 mkdir_label("/run/systemd/sessions", 0755);
1167 manager_parse_config_file(m);
1169 r = manager_startup(m);
1171 log_error_errno(r, "Failed to fully start up daemon: %m");
1175 log_debug("systemd-logind running as pid "PID_FMT, getpid());
1179 "STATUS=Processing requests...");
1183 log_debug("systemd-logind stopped as pid "PID_FMT, getpid());
1188 "STATUS=Shutting down...");
1193 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;