1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include "sd-daemon.h"
30 #include "conf-parser.h"
32 #include "bus-error.h"
34 #include "udev-util.h"
35 #include "formats-util.h"
40 static void manager_free(Manager *m);
42 static Manager *manager_new(void) {
50 m->pin_cgroupfs_fd = -1;
52 m->console_active_fd = -1;
54 /// elogind does not support autospawning of vts
56 m->reserve_vt_fd = -1;
62 m->inhibit_delay_max = 5 * USEC_PER_SEC;
63 m->handle_power_key = HANDLE_POWEROFF;
64 m->handle_suspend_key = HANDLE_SUSPEND;
65 m->handle_hibernate_key = HANDLE_HIBERNATE;
66 m->handle_lid_switch = HANDLE_SUSPEND;
67 m->handle_lid_switch_docked = HANDLE_IGNORE;
68 m->lid_switch_ignore_inhibited = true;
69 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
71 m->idle_action_usec = 30 * USEC_PER_MINUTE;
72 m->idle_action = HANDLE_IGNORE;
73 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
75 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
77 m->devices = hashmap_new(&string_hash_ops);
78 m->seats = hashmap_new(&string_hash_ops);
79 m->sessions = hashmap_new(&string_hash_ops);
80 m->users = hashmap_new(NULL);
81 m->inhibitors = hashmap_new(&string_hash_ops);
82 m->buttons = hashmap_new(&string_hash_ops);
84 m->user_units = hashmap_new(&string_hash_ops);
85 m->session_units = hashmap_new(&string_hash_ops);
87 m->running_as = MANAGER_SYSTEM;
90 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
93 m->kill_exclude_users = strv_new("root", NULL);
94 if (!m->kill_exclude_users)
98 r = manager_setup_cgroup(m);
102 m->udev = udev_new();
106 r = sd_event_default(&m->event);
110 sd_event_set_watchdog(m->event, true);
119 static void manager_free(Manager *m) {
129 while ((session = hashmap_first(m->sessions)))
130 session_free(session);
132 while ((u = hashmap_first(m->users)))
135 while ((d = hashmap_first(m->devices)))
138 while ((s = hashmap_first(m->seats)))
141 while ((i = hashmap_first(m->inhibitors)))
144 while ((b = hashmap_first(m->buttons)))
147 hashmap_free(m->devices);
148 hashmap_free(m->seats);
149 hashmap_free(m->sessions);
150 hashmap_free(m->users);
151 hashmap_free(m->inhibitors);
152 hashmap_free(m->buttons);
154 hashmap_free(m->user_units);
155 hashmap_free(m->session_units);
157 sd_event_source_unref(m->idle_action_event_source);
158 sd_event_source_unref(m->inhibit_timeout_source);
159 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
160 sd_event_source_unref(m->nologin_timeout_source);
161 sd_event_source_unref(m->wall_message_timeout_source);
163 sd_event_source_unref(m->console_active_event_source);
164 sd_event_source_unref(m->udev_seat_event_source);
165 sd_event_source_unref(m->udev_device_event_source);
166 sd_event_source_unref(m->udev_vcsa_event_source);
167 sd_event_source_unref(m->udev_button_event_source);
168 sd_event_source_unref(m->lid_switch_ignore_event_source);
170 safe_close(m->console_active_fd);
172 udev_monitor_unref(m->udev_seat_monitor);
173 udev_monitor_unref(m->udev_device_monitor);
174 udev_monitor_unref(m->udev_vcsa_monitor);
175 udev_monitor_unref(m->udev_button_monitor);
179 if (m->unlink_nologin)
180 unlink("/run/nologin");
182 bus_verify_polkit_async_registry_free(m->polkit_registry);
184 sd_bus_unref(m->bus);
185 sd_event_unref(m->event);
187 /// elogind does not support autospawning of vts
189 safe_close(m->reserve_vt_fd);
192 manager_shutdown_cgroup(m, true);
194 strv_free(m->kill_only_users);
195 strv_free(m->kill_exclude_users);
197 free(m->scheduled_shutdown_type);
198 free(m->scheduled_shutdown_tty);
199 free(m->wall_message);
203 static int manager_enumerate_devices(Manager *m) {
204 struct udev_list_entry *item = NULL, *first = NULL;
205 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
210 /* Loads devices from udev and creates seats for them as
213 e = udev_enumerate_new(m->udev);
217 r = udev_enumerate_add_match_tag(e, "master-of-seat");
221 r = udev_enumerate_add_match_is_initialized(e);
225 r = udev_enumerate_scan_devices(e);
229 first = udev_enumerate_get_list_entry(e);
230 udev_list_entry_foreach(item, first) {
231 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
234 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
238 k = manager_process_seat_device(m, d);
246 static int manager_enumerate_buttons(Manager *m) {
247 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
248 struct udev_list_entry *item = NULL, *first = NULL;
253 /* Loads buttons from udev */
255 if (m->handle_power_key == HANDLE_IGNORE &&
256 m->handle_suspend_key == HANDLE_IGNORE &&
257 m->handle_hibernate_key == HANDLE_IGNORE &&
258 m->handle_lid_switch == HANDLE_IGNORE &&
259 m->handle_lid_switch_docked == HANDLE_IGNORE)
262 e = udev_enumerate_new(m->udev);
266 r = udev_enumerate_add_match_subsystem(e, "input");
270 r = udev_enumerate_add_match_tag(e, "power-switch");
274 r = udev_enumerate_add_match_is_initialized(e);
278 r = udev_enumerate_scan_devices(e);
282 first = udev_enumerate_get_list_entry(e);
283 udev_list_entry_foreach(item, first) {
284 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
287 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
291 k = manager_process_button_device(m, d);
299 static int manager_enumerate_seats(Manager *m) {
300 _cleanup_closedir_ DIR *d = NULL;
306 /* This loads data about seats stored on disk, but does not
307 * actually create any seats. Removes data of seats that no
310 d = opendir("/run/systemd/seats");
315 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
319 FOREACH_DIRENT(de, d, return -errno) {
323 if (!dirent_is_file(de))
326 s = hashmap_get(m->seats, de->d_name);
328 unlinkat(dirfd(d), de->d_name, 0);
340 static int manager_enumerate_linger_users(Manager *m) {
341 _cleanup_closedir_ DIR *d = NULL;
347 d = opendir("/var/lib/systemd/linger");
352 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
356 FOREACH_DIRENT(de, d, return -errno) {
359 if (!dirent_is_file(de))
362 k = manager_add_user_by_name(m, de->d_name, NULL);
364 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
372 static int manager_enumerate_users(Manager *m) {
373 _cleanup_closedir_ DIR *d = NULL;
379 /* Add lingering users */
380 r = manager_enumerate_linger_users(m);
382 /* Read in user data stored on disk */
383 d = opendir("/run/systemd/users");
388 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
392 FOREACH_DIRENT(de, d, return -errno) {
395 if (!dirent_is_file(de))
398 k = manager_add_user_by_name(m, de->d_name, &u);
400 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
406 user_add_to_gc_queue(u);
416 static int manager_enumerate_sessions(Manager *m) {
417 _cleanup_closedir_ DIR *d = NULL;
423 /* Read in session data stored on disk */
424 d = opendir("/run/systemd/sessions");
429 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
433 FOREACH_DIRENT(de, d, return -errno) {
437 if (!dirent_is_file(de))
440 if (!session_id_valid(de->d_name)) {
441 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
446 k = manager_add_session(m, de->d_name, &s);
448 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
454 session_add_to_gc_queue(s);
464 static int manager_enumerate_inhibitors(Manager *m) {
465 _cleanup_closedir_ DIR *d = NULL;
471 d = opendir("/run/systemd/inhibit");
476 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
480 FOREACH_DIRENT(de, d, return -errno) {
484 if (!dirent_is_file(de))
487 k = manager_add_inhibitor(m, de->d_name, &i);
489 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
494 k = inhibitor_load(i);
502 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
503 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
504 Manager *m = userdata;
508 d = udev_monitor_receive_device(m->udev_seat_monitor);
512 manager_process_seat_device(m, d);
516 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
517 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
518 Manager *m = userdata;
522 d = udev_monitor_receive_device(m->udev_device_monitor);
526 manager_process_seat_device(m, d);
530 /// UNNEEDED by elogind
532 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
533 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
534 Manager *m = userdata;
539 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
543 name = udev_device_get_sysname(d);
545 /* Whenever a VCSA device is removed try to reallocate our
546 * VTs, to make sure our auto VTs never go away. */
548 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
549 seat_preallocate_vts(m->seat0);
555 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
556 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
557 Manager *m = userdata;
561 d = udev_monitor_receive_device(m->udev_button_monitor);
565 manager_process_button_device(m, d);
569 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
570 Manager *m = userdata;
574 assert(m->console_active_fd == fd);
576 seat_read_active_vt(m->seat0);
580 /// UNNEEDED by elogind
582 static int manager_reserve_vt(Manager *m) {
583 _cleanup_free_ char *p = NULL;
587 if (m->reserve_vt <= 0)
590 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
593 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
594 if (m->reserve_vt_fd < 0) {
596 /* Don't complain on VT-less systems */
598 log_warning_errno(errno, "Failed to pin reserved VT: %m");
606 static int manager_connect_bus(Manager *m) {
607 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
613 r = sd_bus_default_system(&m->bus);
615 return log_error_errno(r, "Failed to connect to system bus: %m");
617 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
619 return log_error_errno(r, "Failed to add manager object vtable: %m");
621 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
623 return log_error_errno(r, "Failed to add seat object vtable: %m");
625 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
627 return log_error_errno(r, "Failed to add seat enumerator: %m");
629 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
631 return log_error_errno(r, "Failed to add session object vtable: %m");
633 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
635 return log_error_errno(r, "Failed to add session enumerator: %m");
637 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
639 return log_error_errno(r, "Failed to add user object vtable: %m");
641 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
643 return log_error_errno(r, "Failed to add user enumerator: %m");
645 /// elogind does not support systemd action jobs
647 r = sd_bus_add_match(m->bus,
650 "sender='org.freedesktop.systemd1',"
651 "interface='org.freedesktop.systemd1.Manager',"
652 "member='JobRemoved',"
653 "path='/org/freedesktop/systemd1'",
654 match_job_removed, m);
656 log_warning_errno(r, "Failed to add match for JobRemoved: %m");
659 r = sd_bus_add_match(m->bus,
662 "sender='org.freedesktop.systemd1',"
663 "interface='org.freedesktop.systemd1.Manager',"
664 "member='UnitRemoved',"
665 "path='/org/freedesktop/systemd1'",
666 match_unit_removed, m);
668 log_warning_errno(r, "Failed to add match for UnitRemoved: %m");
670 r = sd_bus_add_match(m->bus,
673 "sender='org.freedesktop.systemd1',"
674 "interface='org.freedesktop.DBus.Properties',"
675 "member='PropertiesChanged'",
676 match_properties_changed, m);
678 log_warning_errno(r, "Failed to add match for PropertiesChanged: %m");
680 r = sd_bus_add_match(m->bus,
683 "sender='org.freedesktop.systemd1',"
684 "interface='org.freedesktop.systemd1.Manager',"
685 "member='Reloading',"
686 "path='/org/freedesktop/systemd1'",
689 log_warning_errno(r, "Failed to add match for Reloading: %m");
691 r = sd_bus_call_method(
693 "org.freedesktop.systemd1",
694 "/org/freedesktop/systemd1",
695 "org.freedesktop.systemd1.Manager",
700 log_notice("Failed to enable subscription: %s", bus_error_message(&error, r));
702 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
704 return log_error_errno(r, "Failed to register name: %m");
706 r = sd_bus_attach_event(m->bus, m->event, 0);
708 return log_error_errno(r, "Failed to attach bus to event loop: %m");
713 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
715 Session *active, *iter;
718 * We got a VT-switch signal and we have to acknowledge it immediately.
719 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
720 * old user-space might run multiple sessions on a single VT, *sigh*.
721 * Therefore, we have to iterate all sessions and find one with a vtfd
722 * on the requested VT.
723 * As only VTs with active controllers have VT_PROCESS set, our current
724 * notion of the active VT might be wrong (for instance if the switch
725 * happens while we setup VT_PROCESS). Therefore, read the current VT
726 * first and then use s->active->vtnr as reference. Note that this is
727 * not racy, as no further VT-switch can happen as long as we're in
728 * synchronous VT_PROCESS mode.
732 seat_read_active_vt(m->seat0);
734 active = m->seat0->active;
735 if (!active || active->vtnr < 1) {
736 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
740 if (active->vtfd >= 0) {
741 session_leave_vt(active);
743 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
744 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
745 session_leave_vt(iter);
754 static int manager_connect_console(Manager *m) {
758 assert(m->console_active_fd < 0);
760 /* On certain architectures (S390 and Xen, and containers),
761 /dev/tty0 does not exist, so don't fail if we can't open
763 if (access("/dev/tty0", F_OK) < 0)
766 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
767 if (m->console_active_fd < 0) {
769 /* On some systems the device node /dev/tty0 may exist
770 * even though /sys/class/tty/tty0 does not. */
774 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
778 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
780 log_error("Failed to watch foreground console");
785 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
786 * as VT-acquire signal. We ignore any acquire-events (yes, we still
787 * have to provide a valid signal-number for it!) and acknowledge all
788 * release events immediately.
791 if (SIGRTMIN + 1 > SIGRTMAX) {
792 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
796 r = ignore_signals(SIGRTMIN + 1, -1);
798 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
800 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
802 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
804 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
811 static int manager_connect_udev(Manager *m) {
815 assert(!m->udev_seat_monitor);
816 assert(!m->udev_device_monitor);
817 assert(!m->udev_vcsa_monitor);
818 assert(!m->udev_button_monitor);
820 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
821 if (!m->udev_seat_monitor)
824 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
828 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
832 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);
836 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
837 if (!m->udev_device_monitor)
840 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
844 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
848 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
852 r = udev_monitor_enable_receiving(m->udev_device_monitor);
856 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);
860 /* Don't watch keys if nobody cares */
861 if (m->handle_power_key != HANDLE_IGNORE ||
862 m->handle_suspend_key != HANDLE_IGNORE ||
863 m->handle_hibernate_key != HANDLE_IGNORE ||
864 m->handle_lid_switch != HANDLE_IGNORE ||
865 m->handle_lid_switch_docked != HANDLE_IGNORE) {
867 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
868 if (!m->udev_button_monitor)
871 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
875 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
879 r = udev_monitor_enable_receiving(m->udev_button_monitor);
883 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);
888 /* Don't bother watching VCSA devices, if nobody cares */
889 /// elogind does not support autospawning of vts
891 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
893 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
894 if (!m->udev_vcsa_monitor)
897 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
901 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
905 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);
914 static void manager_gc(Manager *m, bool drop_not_started) {
921 while ((seat = m->seat_gc_queue)) {
922 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
923 seat->in_gc_queue = false;
925 if (!seat_check_gc(seat, drop_not_started)) {
926 seat_stop(seat, false);
931 while ((session = m->session_gc_queue)) {
932 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
933 session->in_gc_queue = false;
935 /* First, if we are not closing yet, initiate stopping */
936 if (!session_check_gc(session, drop_not_started) &&
937 session_get_state(session) != SESSION_CLOSING)
938 session_stop(session, false);
940 /* Normally, this should make the session referenced
941 * again, if it doesn't then let's get rid of it
943 if (!session_check_gc(session, drop_not_started)) {
944 session_finalize(session);
945 session_free(session);
949 while ((user = m->user_gc_queue)) {
950 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
951 user->in_gc_queue = false;
953 /* First step: queue stop jobs */
954 if (!user_check_gc(user, drop_not_started))
955 user_stop(user, false);
957 /* Second step: finalize user */
958 if (!user_check_gc(user, drop_not_started)) {
965 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
966 Manager *m = userdata;
967 struct dual_timestamp since;
973 if (m->idle_action == HANDLE_IGNORE ||
974 m->idle_action_usec <= 0)
977 n = now(CLOCK_MONOTONIC);
979 r = manager_get_idle_hint(m, &since);
981 /* Not idle. Let's check if after a timeout it might be idle then. */
982 elapse = n + m->idle_action_usec;
984 /* Idle! Let's see if it's time to do something, or if
985 * we shall sleep for longer. */
987 if (n >= since.monotonic + m->idle_action_usec &&
988 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
989 log_info("System idle. Taking action.");
991 manager_handle_action(m, 0, m->idle_action, false, false);
992 m->idle_action_not_before_usec = n;
995 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
998 if (!m->idle_action_event_source) {
1000 r = sd_event_add_time(
1002 &m->idle_action_event_source,
1004 elapse, USEC_PER_SEC*30,
1005 manager_dispatch_idle_action, m);
1007 return log_error_errno(r, "Failed to add idle event source: %m");
1009 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1011 return log_error_errno(r, "Failed to set idle event source priority: %m");
1013 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1015 return log_error_errno(r, "Failed to set idle event timer: %m");
1017 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1019 return log_error_errno(r, "Failed to enable idle event timer: %m");
1025 static int manager_startup(Manager *m) {
1031 Inhibitor *inhibitor;
1036 /* Connect to console */
1037 r = manager_connect_console(m);
1041 /* Connect to udev */
1042 r = manager_connect_udev(m);
1044 return log_error_errno(r, "Failed to create udev watchers: %m");
1046 /* Connect to the bus */
1047 r = manager_connect_bus(m);
1051 /* Instantiate magic seat 0 */
1052 r = manager_add_seat(m, "seat0", &m->seat0);
1054 return log_error_errno(r, "Failed to add seat0: %m");
1056 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1058 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1060 /* Deserialize state */
1061 r = manager_enumerate_devices(m);
1063 log_warning_errno(r, "Device enumeration failed: %m");
1065 r = manager_enumerate_seats(m);
1067 log_warning_errno(r, "Seat enumeration failed: %m");
1069 r = manager_enumerate_users(m);
1071 log_warning_errno(r, "User enumeration failed: %m");
1073 r = manager_enumerate_sessions(m);
1075 log_warning_errno(r, "Session enumeration failed: %m");
1077 r = manager_enumerate_inhibitors(m);
1079 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1081 r = manager_enumerate_buttons(m);
1083 log_warning_errno(r, "Button enumeration failed: %m");
1085 /* Remove stale objects before we start them */
1086 manager_gc(m, false);
1088 /* Reserve the special reserved VT */
1089 /// elogind does not support autospawning of vts
1091 manager_reserve_vt(m);
1094 /* And start everything */
1095 HASHMAP_FOREACH(seat, m->seats, i)
1098 HASHMAP_FOREACH(user, m->users, i)
1101 HASHMAP_FOREACH(session, m->sessions, i)
1102 session_start(session);
1104 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1105 inhibitor_start(inhibitor);
1107 HASHMAP_FOREACH(button, m->buttons, i)
1108 button_check_switches(button);
1110 manager_dispatch_idle_action(NULL, 0, m);
1115 static int manager_run(Manager *m) {
1121 r = sd_event_get_state(m->event);
1124 if (r == SD_EVENT_FINISHED)
1127 manager_gc(m, true);
1129 r = sd_event_run(m->event, (uint64_t) -1);
1135 static int manager_parse_config_file(Manager *m) {
1138 return config_parse_many("/etc/systemd/logind.conf",
1139 CONF_DIRS_NULSTR("systemd/logind.conf"),
1141 config_item_perf_lookup, logind_gperf_lookup,
1145 int main(int argc, char *argv[]) {
1149 log_set_target(LOG_TARGET_AUTO);
1150 log_set_facility(LOG_AUTH);
1151 log_parse_environment();
1157 log_error("This program takes no arguments.");
1162 /* Always create the directories people can create inotify
1163 * watches in. Note that some applications might check for the
1164 * existence of /run/systemd/seats/ to determine whether
1165 * logind is available, so please always make sure this check
1167 r = mkdir_label("/run/systemd", 0755);
1168 if ( (r < 0) && (-EEXIST != r) )
1169 return log_error_errno(r, "Failed to create /run/systemd : %m");
1170 r = mkdir_label("/run/systemd/seats", 0755);
1171 if ( r < 0 && (-EEXIST != r) )
1172 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1173 r = mkdir_label("/run/systemd/users", 0755);
1174 if ( r < 0 && (-EEXIST != r) )
1175 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1176 r = mkdir_label("/run/systemd/sessions", 0755);
1177 if ( r < 0 && (-EEXIST != r) )
1178 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1179 r = mkdir_label("/run/systemd/machines", 0755);
1180 if ( r < 0 && (-EEXIST != r) )
1181 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1189 manager_parse_config_file(m);
1191 r = manager_startup(m);
1193 log_error_errno(r, "Failed to fully start up daemon: %m");
1197 log_debug("logind running as pid "PID_FMT, getpid());
1201 "STATUS=Processing requests...");
1205 log_debug("logind stopped as pid "PID_FMT, getpid());
1210 "STATUS=Shutting down...");
1214 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;