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"
41 static void manager_free(Manager *m);
43 static Manager *manager_new(void) {
51 m->pin_cgroupfs_fd = -1;
53 m->console_active_fd = -1;
55 /// elogind does not support autospawning of vts
57 m->reserve_vt_fd = -1;
63 m->inhibit_delay_max = 5 * USEC_PER_SEC;
64 m->handle_power_key = HANDLE_POWEROFF;
65 m->handle_suspend_key = HANDLE_SUSPEND;
66 m->handle_hibernate_key = HANDLE_HIBERNATE;
67 m->handle_lid_switch = HANDLE_SUSPEND;
68 m->handle_lid_switch_docked = HANDLE_IGNORE;
69 m->lid_switch_ignore_inhibited = true;
70 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
72 m->idle_action_usec = 30 * USEC_PER_MINUTE;
73 m->idle_action = HANDLE_IGNORE;
74 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
76 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
78 m->devices = hashmap_new(&string_hash_ops);
79 m->seats = hashmap_new(&string_hash_ops);
80 m->sessions = hashmap_new(&string_hash_ops);
81 m->users = hashmap_new(NULL);
82 m->inhibitors = hashmap_new(&string_hash_ops);
83 m->buttons = hashmap_new(&string_hash_ops);
85 m->user_units = hashmap_new(&string_hash_ops);
86 m->session_units = hashmap_new(&string_hash_ops);
88 m->running_as = MANAGER_SYSTEM;
91 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
94 m->kill_exclude_users = strv_new("root", NULL);
95 if (!m->kill_exclude_users)
99 r = manager_setup_cgroup(m);
103 m->suspend_mode = NULL;
104 m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
105 if (!m->suspend_state)
107 m->hibernate_mode = strv_new("platform", "shutdown", NULL);
108 if (!m->hibernate_mode)
110 m->hibernate_state = strv_new("disk", NULL);
111 if (!m->hibernate_state)
113 m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
114 if (!m->hybrid_sleep_mode)
116 m->hybrid_sleep_state = strv_new("disk", NULL);
117 if (!m->hybrid_sleep_state)
120 m->udev = udev_new();
124 r = sd_event_default(&m->event);
128 sd_event_set_watchdog(m->event, true);
137 static void manager_free(Manager *m) {
147 while ((session = hashmap_first(m->sessions)))
148 session_free(session);
150 while ((u = hashmap_first(m->users)))
153 while ((d = hashmap_first(m->devices)))
156 while ((s = hashmap_first(m->seats)))
159 while ((i = hashmap_first(m->inhibitors)))
162 while ((b = hashmap_first(m->buttons)))
165 hashmap_free(m->devices);
166 hashmap_free(m->seats);
167 hashmap_free(m->sessions);
168 hashmap_free(m->users);
169 hashmap_free(m->inhibitors);
170 hashmap_free(m->buttons);
172 hashmap_free(m->user_units);
173 hashmap_free(m->session_units);
175 sd_event_source_unref(m->idle_action_event_source);
176 sd_event_source_unref(m->inhibit_timeout_source);
177 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
178 sd_event_source_unref(m->nologin_timeout_source);
179 sd_event_source_unref(m->wall_message_timeout_source);
181 sd_event_source_unref(m->console_active_event_source);
182 sd_event_source_unref(m->udev_seat_event_source);
183 sd_event_source_unref(m->udev_device_event_source);
184 sd_event_source_unref(m->udev_vcsa_event_source);
185 sd_event_source_unref(m->udev_button_event_source);
186 sd_event_source_unref(m->lid_switch_ignore_event_source);
188 safe_close(m->console_active_fd);
190 udev_monitor_unref(m->udev_seat_monitor);
191 udev_monitor_unref(m->udev_device_monitor);
192 udev_monitor_unref(m->udev_vcsa_monitor);
193 udev_monitor_unref(m->udev_button_monitor);
197 if (m->unlink_nologin)
198 unlink("/run/nologin");
200 bus_verify_polkit_async_registry_free(m->polkit_registry);
202 sd_bus_unref(m->bus);
203 sd_event_unref(m->event);
205 /// elogind does not support autospawning of vts
207 safe_close(m->reserve_vt_fd);
210 /* Avoid the creation of new processes forked by the
211 * kernel; at this point, we will not listen to the
213 if (detect_container(NULL) <= 0)
214 (void) cg_uninstall_release_agent(ELOGIND_CGROUP_CONTROLLER);
216 manager_shutdown_cgroup(m, true);
218 strv_free(m->kill_only_users);
219 strv_free(m->kill_exclude_users);
221 free(m->scheduled_shutdown_type);
222 free(m->scheduled_shutdown_tty);
223 free(m->wall_message);
225 strv_free(m->suspend_mode);
226 strv_free(m->suspend_state);
227 strv_free(m->hibernate_mode);
228 strv_free(m->hibernate_state);
229 strv_free(m->hybrid_sleep_mode);
230 strv_free(m->hybrid_sleep_state);
235 static int manager_enumerate_devices(Manager *m) {
236 struct udev_list_entry *item = NULL, *first = NULL;
237 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
242 /* Loads devices from udev and creates seats for them as
245 e = udev_enumerate_new(m->udev);
249 r = udev_enumerate_add_match_tag(e, "master-of-seat");
253 r = udev_enumerate_add_match_is_initialized(e);
257 r = udev_enumerate_scan_devices(e);
261 first = udev_enumerate_get_list_entry(e);
262 udev_list_entry_foreach(item, first) {
263 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
266 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
270 k = manager_process_seat_device(m, d);
278 static int manager_enumerate_buttons(Manager *m) {
279 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
280 struct udev_list_entry *item = NULL, *first = NULL;
285 /* Loads buttons from udev */
287 if (m->handle_power_key == HANDLE_IGNORE &&
288 m->handle_suspend_key == HANDLE_IGNORE &&
289 m->handle_hibernate_key == HANDLE_IGNORE &&
290 m->handle_lid_switch == HANDLE_IGNORE &&
291 m->handle_lid_switch_docked == HANDLE_IGNORE)
294 e = udev_enumerate_new(m->udev);
298 r = udev_enumerate_add_match_subsystem(e, "input");
302 r = udev_enumerate_add_match_tag(e, "power-switch");
306 r = udev_enumerate_add_match_is_initialized(e);
310 r = udev_enumerate_scan_devices(e);
314 first = udev_enumerate_get_list_entry(e);
315 udev_list_entry_foreach(item, first) {
316 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
319 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
323 k = manager_process_button_device(m, d);
331 static int manager_enumerate_seats(Manager *m) {
332 _cleanup_closedir_ DIR *d = NULL;
338 /* This loads data about seats stored on disk, but does not
339 * actually create any seats. Removes data of seats that no
342 d = opendir("/run/systemd/seats");
347 log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
351 FOREACH_DIRENT(de, d, return -errno) {
355 if (!dirent_is_file(de))
358 s = hashmap_get(m->seats, de->d_name);
360 unlinkat(dirfd(d), de->d_name, 0);
372 static int manager_enumerate_linger_users(Manager *m) {
373 _cleanup_closedir_ DIR *d = NULL;
379 d = opendir("/var/lib/systemd/linger");
384 log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
388 FOREACH_DIRENT(de, d, return -errno) {
391 if (!dirent_is_file(de))
394 k = manager_add_user_by_name(m, de->d_name, NULL);
396 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
404 static int manager_enumerate_users(Manager *m) {
405 _cleanup_closedir_ DIR *d = NULL;
411 /* Add lingering users */
412 r = manager_enumerate_linger_users(m);
414 /* Read in user data stored on disk */
415 d = opendir("/run/systemd/users");
420 log_error_errno(errno, "Failed to open /run/systemd/users: %m");
424 FOREACH_DIRENT(de, d, return -errno) {
427 if (!dirent_is_file(de))
430 k = manager_add_user_by_name(m, de->d_name, &u);
432 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
438 user_add_to_gc_queue(u);
448 static int manager_enumerate_sessions(Manager *m) {
449 _cleanup_closedir_ DIR *d = NULL;
455 /* Read in session data stored on disk */
456 d = opendir("/run/systemd/sessions");
461 log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
465 FOREACH_DIRENT(de, d, return -errno) {
469 if (!dirent_is_file(de))
472 if (!session_id_valid(de->d_name)) {
473 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
478 k = manager_add_session(m, de->d_name, &s);
480 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
486 session_add_to_gc_queue(s);
496 static int manager_enumerate_inhibitors(Manager *m) {
497 _cleanup_closedir_ DIR *d = NULL;
503 d = opendir("/run/systemd/inhibit");
508 log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
512 FOREACH_DIRENT(de, d, return -errno) {
516 if (!dirent_is_file(de))
519 k = manager_add_inhibitor(m, de->d_name, &i);
521 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
526 k = inhibitor_load(i);
534 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
535 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
536 Manager *m = userdata;
540 d = udev_monitor_receive_device(m->udev_seat_monitor);
544 manager_process_seat_device(m, d);
548 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
549 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
550 Manager *m = userdata;
554 d = udev_monitor_receive_device(m->udev_device_monitor);
558 manager_process_seat_device(m, d);
562 /// UNNEEDED by elogind
564 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
565 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
566 Manager *m = userdata;
571 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
575 name = udev_device_get_sysname(d);
577 /* Whenever a VCSA device is removed try to reallocate our
578 * VTs, to make sure our auto VTs never go away. */
580 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
581 seat_preallocate_vts(m->seat0);
587 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
588 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
589 Manager *m = userdata;
593 d = udev_monitor_receive_device(m->udev_button_monitor);
597 manager_process_button_device(m, d);
601 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
602 Manager *m = userdata;
606 assert(m->console_active_fd == fd);
608 seat_read_active_vt(m->seat0);
612 /// UNNEEDED by elogind
614 static int manager_reserve_vt(Manager *m) {
615 _cleanup_free_ char *p = NULL;
619 if (m->reserve_vt <= 0)
622 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
625 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
626 if (m->reserve_vt_fd < 0) {
628 /* Don't complain on VT-less systems */
630 log_warning_errno(errno, "Failed to pin reserved VT: %m");
638 static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) {
639 Manager *m = userdata;
647 r = sd_bus_message_read(message, "s", &cgroup);
649 bus_log_parse_error(r);
653 s = hashmap_get(m->sessions, cgroup);
656 log_warning("Session not found: %s", cgroup);
666 static int manager_connect_bus(Manager *m) {
667 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
673 r = sd_bus_default_system(&m->bus);
675 return log_error_errno(r, "Failed to connect to system bus: %m");
677 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
679 return log_error_errno(r, "Failed to add manager object vtable: %m");
681 /* elogind relies on signals from its release agent */
682 r = sd_bus_add_match(m->bus, NULL,
684 "interface='org.freedesktop.systemd1.Agent',"
686 "path='/org/freedesktop/systemd1/agent'",
687 signal_agent_released, m);
689 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
691 return log_error_errno(r, "Failed to add seat object vtable: %m");
693 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
695 return log_error_errno(r, "Failed to add seat enumerator: %m");
697 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
699 return log_error_errno(r, "Failed to add session object vtable: %m");
701 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
703 return log_error_errno(r, "Failed to add session enumerator: %m");
705 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
707 return log_error_errno(r, "Failed to add user object vtable: %m");
709 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
711 return log_error_errno(r, "Failed to add user enumerator: %m");
713 /// elogind does not support systemd as PID 1
715 r = sd_bus_add_match(m->bus,
718 "sender='org.freedesktop.systemd1',"
719 "interface='org.freedesktop.systemd1.Manager',"
720 "member='JobRemoved',"
721 "path='/org/freedesktop/systemd1'",
722 match_job_removed, m);
724 log_warning_errno(r, "Failed to add match for JobRemoved: %m");
726 r = sd_bus_add_match(m->bus,
729 "sender='org.freedesktop.systemd1',"
730 "interface='org.freedesktop.systemd1.Manager',"
731 "member='UnitRemoved',"
732 "path='/org/freedesktop/systemd1'",
733 match_unit_removed, m);
735 log_warning_errno(r, "Failed to add match for UnitRemoved: %m");
737 r = sd_bus_add_match(m->bus,
740 "sender='org.freedesktop.systemd1',"
741 "interface='org.freedesktop.DBus.Properties',"
742 "member='PropertiesChanged'",
743 match_properties_changed, m);
745 log_warning_errno(r, "Failed to add match for PropertiesChanged: %m");
747 r = sd_bus_add_match(m->bus,
750 "sender='org.freedesktop.systemd1',"
751 "interface='org.freedesktop.systemd1.Manager',"
752 "member='Reloading',"
753 "path='/org/freedesktop/systemd1'",
756 log_warning_errno(r, "Failed to add match for Reloading: %m");
758 r = sd_bus_call_method(
760 "org.freedesktop.systemd1",
761 "/org/freedesktop/systemd1",
762 "org.freedesktop.systemd1.Manager",
767 log_notice("Failed to enable subscription: %s", bus_error_message(&error, r));
770 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
772 return log_error_errno(r, "Failed to register name: %m");
774 r = sd_bus_attach_event(m->bus, m->event, 0);
776 return log_error_errno(r, "Failed to attach bus to event loop: %m");
781 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
783 Session *active, *iter;
786 * We got a VT-switch signal and we have to acknowledge it immediately.
787 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
788 * old user-space might run multiple sessions on a single VT, *sigh*.
789 * Therefore, we have to iterate all sessions and find one with a vtfd
790 * on the requested VT.
791 * As only VTs with active controllers have VT_PROCESS set, our current
792 * notion of the active VT might be wrong (for instance if the switch
793 * happens while we setup VT_PROCESS). Therefore, read the current VT
794 * first and then use s->active->vtnr as reference. Note that this is
795 * not racy, as no further VT-switch can happen as long as we're in
796 * synchronous VT_PROCESS mode.
800 seat_read_active_vt(m->seat0);
802 active = m->seat0->active;
803 if (!active || active->vtnr < 1) {
804 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
808 if (active->vtfd >= 0) {
809 session_leave_vt(active);
811 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
812 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
813 session_leave_vt(iter);
822 static int manager_connect_console(Manager *m) {
826 assert(m->console_active_fd < 0);
828 /* On certain architectures (S390 and Xen, and containers),
829 /dev/tty0 does not exist, so don't fail if we can't open
831 if (access("/dev/tty0", F_OK) < 0)
834 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
835 if (m->console_active_fd < 0) {
837 /* On some systems the device node /dev/tty0 may exist
838 * even though /sys/class/tty/tty0 does not. */
842 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
846 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
848 log_error("Failed to watch foreground console");
853 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
854 * as VT-acquire signal. We ignore any acquire-events (yes, we still
855 * have to provide a valid signal-number for it!) and acknowledge all
856 * release events immediately.
859 if (SIGRTMIN + 1 > SIGRTMAX) {
860 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
864 r = ignore_signals(SIGRTMIN + 1, -1);
866 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
868 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
870 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
872 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
879 static int manager_connect_udev(Manager *m) {
883 assert(!m->udev_seat_monitor);
884 assert(!m->udev_device_monitor);
885 assert(!m->udev_vcsa_monitor);
886 assert(!m->udev_button_monitor);
888 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
889 if (!m->udev_seat_monitor)
892 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
896 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
900 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);
904 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
905 if (!m->udev_device_monitor)
908 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
912 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
916 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
920 r = udev_monitor_enable_receiving(m->udev_device_monitor);
924 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);
928 /* Don't watch keys if nobody cares */
929 if (m->handle_power_key != HANDLE_IGNORE ||
930 m->handle_suspend_key != HANDLE_IGNORE ||
931 m->handle_hibernate_key != HANDLE_IGNORE ||
932 m->handle_lid_switch != HANDLE_IGNORE ||
933 m->handle_lid_switch_docked != HANDLE_IGNORE) {
935 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
936 if (!m->udev_button_monitor)
939 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
943 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
947 r = udev_monitor_enable_receiving(m->udev_button_monitor);
951 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);
956 /* Don't bother watching VCSA devices, if nobody cares */
957 /// elogind does not support autospawning of vts
959 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
961 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
962 if (!m->udev_vcsa_monitor)
965 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
969 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
973 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);
982 static void manager_gc(Manager *m, bool drop_not_started) {
989 while ((seat = m->seat_gc_queue)) {
990 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
991 seat->in_gc_queue = false;
993 if (!seat_check_gc(seat, drop_not_started)) {
994 seat_stop(seat, false);
999 while ((session = m->session_gc_queue)) {
1000 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
1001 session->in_gc_queue = false;
1003 /* First, if we are not closing yet, initiate stopping */
1004 if (!session_check_gc(session, drop_not_started) &&
1005 session_get_state(session) != SESSION_CLOSING)
1006 session_stop(session, false);
1008 /* Normally, this should make the session referenced
1009 * again, if it doesn't then let's get rid of it
1011 if (!session_check_gc(session, drop_not_started)) {
1012 session_finalize(session);
1013 session_free(session);
1017 while ((user = m->user_gc_queue)) {
1018 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1019 user->in_gc_queue = false;
1021 /* First step: queue stop jobs */
1022 if (!user_check_gc(user, drop_not_started))
1023 user_stop(user, false);
1025 /* Second step: finalize user */
1026 if (!user_check_gc(user, drop_not_started)) {
1027 user_finalize(user);
1033 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1034 Manager *m = userdata;
1035 struct dual_timestamp since;
1041 if (m->idle_action == HANDLE_IGNORE ||
1042 m->idle_action_usec <= 0)
1045 n = now(CLOCK_MONOTONIC);
1047 r = manager_get_idle_hint(m, &since);
1049 /* Not idle. Let's check if after a timeout it might be idle then. */
1050 elapse = n + m->idle_action_usec;
1052 /* Idle! Let's see if it's time to do something, or if
1053 * we shall sleep for longer. */
1055 if (n >= since.monotonic + m->idle_action_usec &&
1056 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1057 log_info("System idle. Taking action.");
1059 manager_handle_action(m, 0, m->idle_action, false, false);
1060 m->idle_action_not_before_usec = n;
1063 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1066 if (!m->idle_action_event_source) {
1068 r = sd_event_add_time(
1070 &m->idle_action_event_source,
1072 elapse, USEC_PER_SEC*30,
1073 manager_dispatch_idle_action, m);
1075 return log_error_errno(r, "Failed to add idle event source: %m");
1077 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1079 return log_error_errno(r, "Failed to set idle event source priority: %m");
1081 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1083 return log_error_errno(r, "Failed to set idle event timer: %m");
1085 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1087 return log_error_errno(r, "Failed to enable idle event timer: %m");
1093 static int manager_startup(Manager *m) {
1099 Inhibitor *inhibitor;
1104 /* Connect to console */
1105 r = manager_connect_console(m);
1109 /* Connect to udev */
1110 r = manager_connect_udev(m);
1112 return log_error_errno(r, "Failed to create udev watchers: %m");
1114 /* Connect to the bus */
1115 r = manager_connect_bus(m);
1119 /* Instantiate magic seat 0 */
1120 r = manager_add_seat(m, "seat0", &m->seat0);
1122 return log_error_errno(r, "Failed to add seat0: %m");
1124 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1126 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1128 /* Deserialize state */
1129 r = manager_enumerate_devices(m);
1131 log_warning_errno(r, "Device enumeration failed: %m");
1133 r = manager_enumerate_seats(m);
1135 log_warning_errno(r, "Seat enumeration failed: %m");
1137 r = manager_enumerate_users(m);
1139 log_warning_errno(r, "User enumeration failed: %m");
1141 r = manager_enumerate_sessions(m);
1143 log_warning_errno(r, "Session enumeration failed: %m");
1145 r = manager_enumerate_inhibitors(m);
1147 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1149 r = manager_enumerate_buttons(m);
1151 log_warning_errno(r, "Button enumeration failed: %m");
1153 /* Remove stale objects before we start them */
1154 manager_gc(m, false);
1156 /* Reserve the special reserved VT */
1157 /// elogind does not support autospawning of vts
1159 manager_reserve_vt(m);
1162 /* And start everything */
1163 HASHMAP_FOREACH(seat, m->seats, i)
1166 HASHMAP_FOREACH(user, m->users, i)
1169 HASHMAP_FOREACH(session, m->sessions, i)
1170 session_start(session);
1172 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1173 inhibitor_start(inhibitor);
1175 HASHMAP_FOREACH(button, m->buttons, i)
1176 button_check_switches(button);
1178 manager_dispatch_idle_action(NULL, 0, m);
1183 static int manager_run(Manager *m) {
1189 r = sd_event_get_state(m->event);
1192 if (r == SD_EVENT_FINISHED)
1195 manager_gc(m, true);
1197 r = sd_event_run(m->event, (uint64_t) -1);
1203 static int manager_parse_config_file(Manager *m) {
1204 const char *unit = NULL, *logind_conf, *sections;
1206 bool relaxed = false, allow_include = false, warn = true;
1210 /// elogind parses its own config file
1212 return config_parse_many("/etc/systemd/logind.conf",
1213 CONF_DIRS_NULSTR("systemd/logind.conf"),
1215 config_item_perf_lookup, logind_gperf_lookup,
1219 logind_conf = getenv("ELOGIND_CONF_FILE");
1221 logind_conf = PKGSYSCONFDIR "/logind.conf";
1222 sections = "Login\0Sleep\0";
1224 return config_parse(unit, logind_conf, file, sections,
1225 config_item_perf_lookup, logind_gperf_lookup,
1226 relaxed, allow_include, warn, m);
1229 int main(int argc, char *argv[]) {
1233 log_set_target(LOG_TARGET_AUTO);
1234 log_set_facility(LOG_AUTH);
1235 log_parse_environment();
1241 log_error("This program takes no arguments.");
1246 /* Always create the directories people can create inotify
1247 * watches in. Note that some applications might check for the
1248 * existence of /run/systemd/seats/ to determine whether
1249 * logind is available, so please always make sure this check
1251 r = mkdir_label("/run/systemd", 0755);
1252 if ( (r < 0) && (-EEXIST != r) )
1253 return log_error_errno(r, "Failed to create /run/systemd : %m");
1254 r = mkdir_label("/run/systemd/seats", 0755);
1255 if ( r < 0 && (-EEXIST != r) )
1256 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1257 r = mkdir_label("/run/systemd/users", 0755);
1258 if ( r < 0 && (-EEXIST != r) )
1259 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1260 r = mkdir_label("/run/systemd/sessions", 0755);
1261 if ( r < 0 && (-EEXIST != r) )
1262 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1263 r = mkdir_label("/run/systemd/machines", 0755);
1264 if ( r < 0 && (-EEXIST != r) )
1265 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1273 manager_parse_config_file(m);
1275 r = manager_startup(m);
1277 log_error_errno(r, "Failed to fully start up daemon: %m");
1281 log_debug("logind running as pid "PID_FMT, getpid());
1285 "STATUS=Processing requests...");
1289 log_debug("logind stopped as pid "PID_FMT, getpid());
1294 "STATUS=Shutting down...");
1298 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;