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);
204 static int manager_enumerate_devices(Manager *m) {
205 struct udev_list_entry *item = NULL, *first = NULL;
206 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
211 /* Loads devices from udev and creates seats for them as
214 e = udev_enumerate_new(m->udev);
218 r = udev_enumerate_add_match_tag(e, "master-of-seat");
222 r = udev_enumerate_add_match_is_initialized(e);
226 r = udev_enumerate_scan_devices(e);
230 first = udev_enumerate_get_list_entry(e);
231 udev_list_entry_foreach(item, first) {
232 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
235 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
239 k = manager_process_seat_device(m, d);
247 static int manager_enumerate_buttons(Manager *m) {
248 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
249 struct udev_list_entry *item = NULL, *first = NULL;
254 /* Loads buttons from udev */
256 if (m->handle_power_key == HANDLE_IGNORE &&
257 m->handle_suspend_key == HANDLE_IGNORE &&
258 m->handle_hibernate_key == HANDLE_IGNORE &&
259 m->handle_lid_switch == HANDLE_IGNORE &&
260 m->handle_lid_switch_docked == HANDLE_IGNORE)
263 e = udev_enumerate_new(m->udev);
267 r = udev_enumerate_add_match_subsystem(e, "input");
271 r = udev_enumerate_add_match_tag(e, "power-switch");
275 r = udev_enumerate_add_match_is_initialized(e);
279 r = udev_enumerate_scan_devices(e);
283 first = udev_enumerate_get_list_entry(e);
284 udev_list_entry_foreach(item, first) {
285 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
288 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
292 k = manager_process_button_device(m, d);
300 static int manager_enumerate_seats(Manager *m) {
301 _cleanup_closedir_ DIR *d = NULL;
307 /* This loads data about seats stored on disk, but does not
308 * actually create any seats. Removes data of seats that no
311 d = opendir("/run/systemd/seats");
316 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
320 FOREACH_DIRENT(de, d, return -errno) {
324 if (!dirent_is_file(de))
327 s = hashmap_get(m->seats, de->d_name);
329 unlinkat(dirfd(d), de->d_name, 0);
341 static int manager_enumerate_linger_users(Manager *m) {
342 _cleanup_closedir_ DIR *d = NULL;
348 d = opendir("/var/lib/systemd/linger");
353 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
357 FOREACH_DIRENT(de, d, return -errno) {
360 if (!dirent_is_file(de))
363 k = manager_add_user_by_name(m, de->d_name, NULL);
365 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
373 static int manager_enumerate_users(Manager *m) {
374 _cleanup_closedir_ DIR *d = NULL;
380 /* Add lingering users */
381 r = manager_enumerate_linger_users(m);
383 /* Read in user data stored on disk */
384 d = opendir("/run/systemd/users");
389 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
393 FOREACH_DIRENT(de, d, return -errno) {
396 if (!dirent_is_file(de))
399 k = manager_add_user_by_name(m, de->d_name, &u);
401 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
407 user_add_to_gc_queue(u);
417 static int manager_enumerate_sessions(Manager *m) {
418 _cleanup_closedir_ DIR *d = NULL;
424 /* Read in session data stored on disk */
425 d = opendir("/run/systemd/sessions");
430 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
434 FOREACH_DIRENT(de, d, return -errno) {
438 if (!dirent_is_file(de))
441 if (!session_id_valid(de->d_name)) {
442 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
447 k = manager_add_session(m, de->d_name, &s);
449 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
455 session_add_to_gc_queue(s);
465 static int manager_enumerate_inhibitors(Manager *m) {
466 _cleanup_closedir_ DIR *d = NULL;
472 d = opendir("/run/systemd/inhibit");
477 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
481 FOREACH_DIRENT(de, d, return -errno) {
485 if (!dirent_is_file(de))
488 k = manager_add_inhibitor(m, de->d_name, &i);
490 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
495 k = inhibitor_load(i);
503 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
504 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
505 Manager *m = userdata;
509 d = udev_monitor_receive_device(m->udev_seat_monitor);
513 manager_process_seat_device(m, d);
517 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
518 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
519 Manager *m = userdata;
523 d = udev_monitor_receive_device(m->udev_device_monitor);
527 manager_process_seat_device(m, d);
531 /// UNNEEDED by elogind
533 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
534 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
535 Manager *m = userdata;
540 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
544 name = udev_device_get_sysname(d);
546 /* Whenever a VCSA device is removed try to reallocate our
547 * VTs, to make sure our auto VTs never go away. */
549 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
550 seat_preallocate_vts(m->seat0);
556 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
557 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
558 Manager *m = userdata;
562 d = udev_monitor_receive_device(m->udev_button_monitor);
566 manager_process_button_device(m, d);
570 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
571 Manager *m = userdata;
575 assert(m->console_active_fd == fd);
577 seat_read_active_vt(m->seat0);
581 /// UNNEEDED by elogind
583 static int manager_reserve_vt(Manager *m) {
584 _cleanup_free_ char *p = NULL;
588 if (m->reserve_vt <= 0)
591 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
594 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
595 if (m->reserve_vt_fd < 0) {
597 /* Don't complain on VT-less systems */
599 log_warning_errno(errno, "Failed to pin reserved VT: %m");
607 static int manager_connect_bus(Manager *m) {
608 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
614 r = sd_bus_default_system(&m->bus);
616 return log_error_errno(r, "Failed to connect to system bus: %m");
618 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
620 return log_error_errno(r, "Failed to add manager object vtable: %m");
622 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
624 return log_error_errno(r, "Failed to add seat object vtable: %m");
626 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
628 return log_error_errno(r, "Failed to add seat enumerator: %m");
630 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
632 return log_error_errno(r, "Failed to add session object vtable: %m");
634 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
636 return log_error_errno(r, "Failed to add session enumerator: %m");
638 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
640 return log_error_errno(r, "Failed to add user object vtable: %m");
642 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
644 return log_error_errno(r, "Failed to add user enumerator: %m");
646 r = sd_bus_add_match(m->bus,
649 "sender='org.freedesktop.systemd1',"
650 "interface='org.freedesktop.systemd1.Manager',"
651 "member='JobRemoved',"
652 "path='/org/freedesktop/systemd1'",
653 match_job_removed, m);
655 log_warning_errno(r, "Failed to add match for JobRemoved: %m");
657 r = sd_bus_add_match(m->bus,
660 "sender='org.freedesktop.systemd1',"
661 "interface='org.freedesktop.systemd1.Manager',"
662 "member='UnitRemoved',"
663 "path='/org/freedesktop/systemd1'",
664 match_unit_removed, m);
666 log_warning_errno(r, "Failed to add match for UnitRemoved: %m");
668 r = sd_bus_add_match(m->bus,
671 "sender='org.freedesktop.systemd1',"
672 "interface='org.freedesktop.DBus.Properties',"
673 "member='PropertiesChanged'",
674 match_properties_changed, m);
676 log_warning_errno(r, "Failed to add match for PropertiesChanged: %m");
678 r = sd_bus_add_match(m->bus,
681 "sender='org.freedesktop.systemd1',"
682 "interface='org.freedesktop.systemd1.Manager',"
683 "member='Reloading',"
684 "path='/org/freedesktop/systemd1'",
687 log_warning_errno(r, "Failed to add match for Reloading: %m");
689 r = sd_bus_call_method(
691 "org.freedesktop.systemd1",
692 "/org/freedesktop/systemd1",
693 "org.freedesktop.systemd1.Manager",
698 log_notice("Failed to enable subscription: %s", bus_error_message(&error, r));
700 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
702 return log_error_errno(r, "Failed to register name: %m");
704 r = sd_bus_attach_event(m->bus, m->event, 0);
706 return log_error_errno(r, "Failed to attach bus to event loop: %m");
711 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
713 Session *active, *iter;
716 * We got a VT-switch signal and we have to acknowledge it immediately.
717 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
718 * old user-space might run multiple sessions on a single VT, *sigh*.
719 * Therefore, we have to iterate all sessions and find one with a vtfd
720 * on the requested VT.
721 * As only VTs with active controllers have VT_PROCESS set, our current
722 * notion of the active VT might be wrong (for instance if the switch
723 * happens while we setup VT_PROCESS). Therefore, read the current VT
724 * first and then use s->active->vtnr as reference. Note that this is
725 * not racy, as no further VT-switch can happen as long as we're in
726 * synchronous VT_PROCESS mode.
730 seat_read_active_vt(m->seat0);
732 active = m->seat0->active;
733 if (!active || active->vtnr < 1) {
734 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
738 if (active->vtfd >= 0) {
739 session_leave_vt(active);
741 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
742 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
743 session_leave_vt(iter);
752 static int manager_connect_console(Manager *m) {
756 assert(m->console_active_fd < 0);
758 /* On certain architectures (S390 and Xen, and containers),
759 /dev/tty0 does not exist, so don't fail if we can't open
761 if (access("/dev/tty0", F_OK) < 0)
764 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
765 if (m->console_active_fd < 0) {
767 /* On some systems the device node /dev/tty0 may exist
768 * even though /sys/class/tty/tty0 does not. */
772 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
776 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
778 log_error("Failed to watch foreground console");
783 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
784 * as VT-acquire signal. We ignore any acquire-events (yes, we still
785 * have to provide a valid signal-number for it!) and acknowledge all
786 * release events immediately.
789 if (SIGRTMIN + 1 > SIGRTMAX) {
790 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
794 r = ignore_signals(SIGRTMIN + 1, -1);
796 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
798 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
800 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
802 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
809 static int manager_connect_udev(Manager *m) {
813 assert(!m->udev_seat_monitor);
814 assert(!m->udev_device_monitor);
815 assert(!m->udev_vcsa_monitor);
816 assert(!m->udev_button_monitor);
818 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
819 if (!m->udev_seat_monitor)
822 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
826 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
830 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);
834 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
835 if (!m->udev_device_monitor)
838 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
842 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
846 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
850 r = udev_monitor_enable_receiving(m->udev_device_monitor);
854 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);
858 /* Don't watch keys if nobody cares */
859 if (m->handle_power_key != HANDLE_IGNORE ||
860 m->handle_suspend_key != HANDLE_IGNORE ||
861 m->handle_hibernate_key != HANDLE_IGNORE ||
862 m->handle_lid_switch != HANDLE_IGNORE ||
863 m->handle_lid_switch_docked != HANDLE_IGNORE) {
865 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
866 if (!m->udev_button_monitor)
869 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
873 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
877 r = udev_monitor_enable_receiving(m->udev_button_monitor);
881 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);
886 /* Don't bother watching VCSA devices, if nobody cares */
887 /// elogind does not support autospawning of vts
889 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
891 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
892 if (!m->udev_vcsa_monitor)
895 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
899 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
903 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);
912 static void manager_gc(Manager *m, bool drop_not_started) {
919 while ((seat = m->seat_gc_queue)) {
920 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
921 seat->in_gc_queue = false;
923 if (!seat_check_gc(seat, drop_not_started)) {
924 seat_stop(seat, false);
929 while ((session = m->session_gc_queue)) {
930 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
931 session->in_gc_queue = false;
933 /* First, if we are not closing yet, initiate stopping */
934 if (!session_check_gc(session, drop_not_started) &&
935 session_get_state(session) != SESSION_CLOSING)
936 session_stop(session, false);
938 /* Normally, this should make the session referenced
939 * again, if it doesn't then let's get rid of it
941 if (!session_check_gc(session, drop_not_started)) {
942 session_finalize(session);
943 session_free(session);
947 while ((user = m->user_gc_queue)) {
948 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
949 user->in_gc_queue = false;
951 /* First step: queue stop jobs */
952 if (!user_check_gc(user, drop_not_started))
953 user_stop(user, false);
955 /* Second step: finalize user */
956 if (!user_check_gc(user, drop_not_started)) {
963 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
964 Manager *m = userdata;
965 struct dual_timestamp since;
971 if (m->idle_action == HANDLE_IGNORE ||
972 m->idle_action_usec <= 0)
975 n = now(CLOCK_MONOTONIC);
977 r = manager_get_idle_hint(m, &since);
979 /* Not idle. Let's check if after a timeout it might be idle then. */
980 elapse = n + m->idle_action_usec;
982 /* Idle! Let's see if it's time to do something, or if
983 * we shall sleep for longer. */
985 if (n >= since.monotonic + m->idle_action_usec &&
986 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
987 log_info("System idle. Taking action.");
989 manager_handle_action(m, 0, m->idle_action, false, false);
990 m->idle_action_not_before_usec = n;
993 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
996 if (!m->idle_action_event_source) {
998 r = sd_event_add_time(
1000 &m->idle_action_event_source,
1002 elapse, USEC_PER_SEC*30,
1003 manager_dispatch_idle_action, m);
1005 return log_error_errno(r, "Failed to add idle event source: %m");
1007 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1009 return log_error_errno(r, "Failed to set idle event source priority: %m");
1011 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1013 return log_error_errno(r, "Failed to set idle event timer: %m");
1015 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1017 return log_error_errno(r, "Failed to enable idle event timer: %m");
1023 static int manager_startup(Manager *m) {
1029 Inhibitor *inhibitor;
1034 /* Connect to console */
1035 r = manager_connect_console(m);
1039 /* Connect to udev */
1040 r = manager_connect_udev(m);
1042 return log_error_errno(r, "Failed to create udev watchers: %m");
1044 /* Connect to the bus */
1045 r = manager_connect_bus(m);
1049 /* Instantiate magic seat 0 */
1050 r = manager_add_seat(m, "seat0", &m->seat0);
1052 return log_error_errno(r, "Failed to add seat0: %m");
1054 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1056 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1058 /* Deserialize state */
1059 r = manager_enumerate_devices(m);
1061 log_warning_errno(r, "Device enumeration failed: %m");
1063 r = manager_enumerate_seats(m);
1065 log_warning_errno(r, "Seat enumeration failed: %m");
1067 r = manager_enumerate_users(m);
1069 log_warning_errno(r, "User enumeration failed: %m");
1071 r = manager_enumerate_sessions(m);
1073 log_warning_errno(r, "Session enumeration failed: %m");
1075 r = manager_enumerate_inhibitors(m);
1077 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1079 r = manager_enumerate_buttons(m);
1081 log_warning_errno(r, "Button enumeration failed: %m");
1083 /* Remove stale objects before we start them */
1084 manager_gc(m, false);
1086 /* Reserve the special reserved VT */
1087 /// elogind does not support autospawning of vts
1089 manager_reserve_vt(m);
1092 /* And start everything */
1093 HASHMAP_FOREACH(seat, m->seats, i)
1096 HASHMAP_FOREACH(user, m->users, i)
1099 HASHMAP_FOREACH(session, m->sessions, i)
1100 session_start(session);
1102 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1103 inhibitor_start(inhibitor);
1105 HASHMAP_FOREACH(button, m->buttons, i)
1106 button_check_switches(button);
1108 manager_dispatch_idle_action(NULL, 0, m);
1113 static int manager_run(Manager *m) {
1119 r = sd_event_get_state(m->event);
1122 if (r == SD_EVENT_FINISHED)
1125 manager_gc(m, true);
1127 r = sd_event_run(m->event, (uint64_t) -1);
1133 static int manager_parse_config_file(Manager *m) {
1136 return config_parse_many("/etc/systemd/logind.conf",
1137 CONF_DIRS_NULSTR("systemd/logind.conf"),
1139 config_item_perf_lookup, logind_gperf_lookup,
1143 int main(int argc, char *argv[]) {
1147 log_set_target(LOG_TARGET_AUTO);
1148 log_set_facility(LOG_AUTH);
1149 log_parse_environment();
1155 log_error("This program takes no arguments.");
1160 /* Always create the directories people can create inotify
1161 * watches in. Note that some applications might check for the
1162 * existence of /run/systemd/seats/ to determine whether
1163 * logind is available, so please always make sure this check
1165 r = mkdir_label("/run/systemd", 0755);
1166 if ( (r < 0) && (-EEXIST != r) )
1167 return log_error_errno(r, "Failed to create /run/systemd : %m");
1168 r = mkdir_label("/run/systemd/seats", 0755);
1169 if ( r < 0 && (-EEXIST != r) )
1170 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1171 r = mkdir_label("/run/systemd/users", 0755);
1172 if ( r < 0 && (-EEXIST != r) )
1173 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1174 r = mkdir_label("/run/systemd/sessions", 0755);
1175 if ( r < 0 && (-EEXIST != r) )
1176 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1177 r = mkdir_label("/run/systemd/machines", 0755);
1178 if ( r < 0 && (-EEXIST != r) )
1179 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1187 manager_parse_config_file(m);
1189 r = manager_startup(m);
1191 log_error_errno(r, "Failed to fully start up daemon: %m");
1195 log_debug("logind running as pid "PID_FMT, getpid());
1199 "STATUS=Processing requests...");
1203 log_debug("logind stopped as pid "PID_FMT, getpid());
1208 "STATUS=Shutting down...");
1212 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;