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 manager_connect_bus(Manager *m) {
639 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
645 r = sd_bus_default_system(&m->bus);
647 return log_error_errno(r, "Failed to connect to system bus: %m");
649 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
651 return log_error_errno(r, "Failed to add manager object vtable: %m");
653 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
655 return log_error_errno(r, "Failed to add seat object vtable: %m");
657 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
659 return log_error_errno(r, "Failed to add seat enumerator: %m");
661 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
663 return log_error_errno(r, "Failed to add session object vtable: %m");
665 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
667 return log_error_errno(r, "Failed to add session enumerator: %m");
669 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
671 return log_error_errno(r, "Failed to add user object vtable: %m");
673 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
675 return log_error_errno(r, "Failed to add user enumerator: %m");
677 /// elogind does not support systemd action jobs
679 r = sd_bus_add_match(m->bus,
682 "sender='org.freedesktop.systemd1',"
683 "interface='org.freedesktop.systemd1.Manager',"
684 "member='JobRemoved',"
685 "path='/org/freedesktop/systemd1'",
686 match_job_removed, m);
688 log_warning_errno(r, "Failed to add match for JobRemoved: %m");
691 r = sd_bus_add_match(m->bus,
694 "sender='org.freedesktop.systemd1',"
695 "interface='org.freedesktop.systemd1.Manager',"
696 "member='UnitRemoved',"
697 "path='/org/freedesktop/systemd1'",
698 match_unit_removed, m);
700 log_warning_errno(r, "Failed to add match for UnitRemoved: %m");
702 r = sd_bus_add_match(m->bus,
705 "sender='org.freedesktop.systemd1',"
706 "interface='org.freedesktop.DBus.Properties',"
707 "member='PropertiesChanged'",
708 match_properties_changed, m);
710 log_warning_errno(r, "Failed to add match for PropertiesChanged: %m");
712 r = sd_bus_add_match(m->bus,
715 "sender='org.freedesktop.systemd1',"
716 "interface='org.freedesktop.systemd1.Manager',"
717 "member='Reloading',"
718 "path='/org/freedesktop/systemd1'",
721 log_warning_errno(r, "Failed to add match for Reloading: %m");
723 r = sd_bus_call_method(
725 "org.freedesktop.systemd1",
726 "/org/freedesktop/systemd1",
727 "org.freedesktop.systemd1.Manager",
732 log_notice("Failed to enable subscription: %s", bus_error_message(&error, r));
734 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
736 return log_error_errno(r, "Failed to register name: %m");
738 r = sd_bus_attach_event(m->bus, m->event, 0);
740 return log_error_errno(r, "Failed to attach bus to event loop: %m");
745 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
747 Session *active, *iter;
750 * We got a VT-switch signal and we have to acknowledge it immediately.
751 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
752 * old user-space might run multiple sessions on a single VT, *sigh*.
753 * Therefore, we have to iterate all sessions and find one with a vtfd
754 * on the requested VT.
755 * As only VTs with active controllers have VT_PROCESS set, our current
756 * notion of the active VT might be wrong (for instance if the switch
757 * happens while we setup VT_PROCESS). Therefore, read the current VT
758 * first and then use s->active->vtnr as reference. Note that this is
759 * not racy, as no further VT-switch can happen as long as we're in
760 * synchronous VT_PROCESS mode.
764 seat_read_active_vt(m->seat0);
766 active = m->seat0->active;
767 if (!active || active->vtnr < 1) {
768 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
772 if (active->vtfd >= 0) {
773 session_leave_vt(active);
775 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
776 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
777 session_leave_vt(iter);
786 static int manager_connect_console(Manager *m) {
790 assert(m->console_active_fd < 0);
792 /* On certain architectures (S390 and Xen, and containers),
793 /dev/tty0 does not exist, so don't fail if we can't open
795 if (access("/dev/tty0", F_OK) < 0)
798 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
799 if (m->console_active_fd < 0) {
801 /* On some systems the device node /dev/tty0 may exist
802 * even though /sys/class/tty/tty0 does not. */
806 log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
810 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
812 log_error("Failed to watch foreground console");
817 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
818 * as VT-acquire signal. We ignore any acquire-events (yes, we still
819 * have to provide a valid signal-number for it!) and acknowledge all
820 * release events immediately.
823 if (SIGRTMIN + 1 > SIGRTMAX) {
824 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
828 r = ignore_signals(SIGRTMIN + 1, -1);
830 return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
832 r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
834 return log_error_errno(r, "Cannot block SIGRTMIN: %m");
836 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
843 static int manager_connect_udev(Manager *m) {
847 assert(!m->udev_seat_monitor);
848 assert(!m->udev_device_monitor);
849 assert(!m->udev_vcsa_monitor);
850 assert(!m->udev_button_monitor);
852 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
853 if (!m->udev_seat_monitor)
856 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
860 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
864 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);
868 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
869 if (!m->udev_device_monitor)
872 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
876 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
880 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
884 r = udev_monitor_enable_receiving(m->udev_device_monitor);
888 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);
892 /* Don't watch keys if nobody cares */
893 if (m->handle_power_key != HANDLE_IGNORE ||
894 m->handle_suspend_key != HANDLE_IGNORE ||
895 m->handle_hibernate_key != HANDLE_IGNORE ||
896 m->handle_lid_switch != HANDLE_IGNORE ||
897 m->handle_lid_switch_docked != HANDLE_IGNORE) {
899 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
900 if (!m->udev_button_monitor)
903 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
907 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
911 r = udev_monitor_enable_receiving(m->udev_button_monitor);
915 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);
920 /* Don't bother watching VCSA devices, if nobody cares */
921 /// elogind does not support autospawning of vts
923 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
925 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
926 if (!m->udev_vcsa_monitor)
929 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
933 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
937 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);
946 static void manager_gc(Manager *m, bool drop_not_started) {
953 while ((seat = m->seat_gc_queue)) {
954 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
955 seat->in_gc_queue = false;
957 if (!seat_check_gc(seat, drop_not_started)) {
958 seat_stop(seat, false);
963 while ((session = m->session_gc_queue)) {
964 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
965 session->in_gc_queue = false;
967 /* First, if we are not closing yet, initiate stopping */
968 if (!session_check_gc(session, drop_not_started) &&
969 session_get_state(session) != SESSION_CLOSING)
970 session_stop(session, false);
972 /* Normally, this should make the session referenced
973 * again, if it doesn't then let's get rid of it
975 if (!session_check_gc(session, drop_not_started)) {
976 session_finalize(session);
977 session_free(session);
981 while ((user = m->user_gc_queue)) {
982 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
983 user->in_gc_queue = false;
985 /* First step: queue stop jobs */
986 if (!user_check_gc(user, drop_not_started))
987 user_stop(user, false);
989 /* Second step: finalize user */
990 if (!user_check_gc(user, drop_not_started)) {
997 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
998 Manager *m = userdata;
999 struct dual_timestamp since;
1005 if (m->idle_action == HANDLE_IGNORE ||
1006 m->idle_action_usec <= 0)
1009 n = now(CLOCK_MONOTONIC);
1011 r = manager_get_idle_hint(m, &since);
1013 /* Not idle. Let's check if after a timeout it might be idle then. */
1014 elapse = n + m->idle_action_usec;
1016 /* Idle! Let's see if it's time to do something, or if
1017 * we shall sleep for longer. */
1019 if (n >= since.monotonic + m->idle_action_usec &&
1020 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1021 log_info("System idle. Taking action.");
1023 manager_handle_action(m, 0, m->idle_action, false, false);
1024 m->idle_action_not_before_usec = n;
1027 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1030 if (!m->idle_action_event_source) {
1032 r = sd_event_add_time(
1034 &m->idle_action_event_source,
1036 elapse, USEC_PER_SEC*30,
1037 manager_dispatch_idle_action, m);
1039 return log_error_errno(r, "Failed to add idle event source: %m");
1041 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1043 return log_error_errno(r, "Failed to set idle event source priority: %m");
1045 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1047 return log_error_errno(r, "Failed to set idle event timer: %m");
1049 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1051 return log_error_errno(r, "Failed to enable idle event timer: %m");
1057 static int manager_startup(Manager *m) {
1063 Inhibitor *inhibitor;
1068 /* Connect to console */
1069 r = manager_connect_console(m);
1073 /* Connect to udev */
1074 r = manager_connect_udev(m);
1076 return log_error_errno(r, "Failed to create udev watchers: %m");
1078 /* Connect to the bus */
1079 r = manager_connect_bus(m);
1083 /* Instantiate magic seat 0 */
1084 r = manager_add_seat(m, "seat0", &m->seat0);
1086 return log_error_errno(r, "Failed to add seat0: %m");
1088 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1090 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1092 /* Deserialize state */
1093 r = manager_enumerate_devices(m);
1095 log_warning_errno(r, "Device enumeration failed: %m");
1097 r = manager_enumerate_seats(m);
1099 log_warning_errno(r, "Seat enumeration failed: %m");
1101 r = manager_enumerate_users(m);
1103 log_warning_errno(r, "User enumeration failed: %m");
1105 r = manager_enumerate_sessions(m);
1107 log_warning_errno(r, "Session enumeration failed: %m");
1109 r = manager_enumerate_inhibitors(m);
1111 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1113 r = manager_enumerate_buttons(m);
1115 log_warning_errno(r, "Button enumeration failed: %m");
1117 /* Remove stale objects before we start them */
1118 manager_gc(m, false);
1120 /* Reserve the special reserved VT */
1121 /// elogind does not support autospawning of vts
1123 manager_reserve_vt(m);
1126 /* And start everything */
1127 HASHMAP_FOREACH(seat, m->seats, i)
1130 HASHMAP_FOREACH(user, m->users, i)
1133 HASHMAP_FOREACH(session, m->sessions, i)
1134 session_start(session);
1136 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1137 inhibitor_start(inhibitor);
1139 HASHMAP_FOREACH(button, m->buttons, i)
1140 button_check_switches(button);
1142 manager_dispatch_idle_action(NULL, 0, m);
1147 static int manager_run(Manager *m) {
1153 r = sd_event_get_state(m->event);
1156 if (r == SD_EVENT_FINISHED)
1159 manager_gc(m, true);
1161 r = sd_event_run(m->event, (uint64_t) -1);
1167 static int manager_parse_config_file(Manager *m) {
1168 const char *unit = NULL, *logind_conf, *sections;
1170 bool relaxed = false, allow_include = false, warn = true;
1174 /// elogind parses its own config file
1176 return config_parse_many("/etc/systemd/logind.conf",
1177 CONF_DIRS_NULSTR("systemd/logind.conf"),
1179 config_item_perf_lookup, logind_gperf_lookup,
1183 logind_conf = getenv("ELOGIND_CONF_FILE");
1185 logind_conf = PKGSYSCONFDIR "/logind.conf";
1186 sections = "Login\0Sleep\0";
1188 return config_parse(unit, logind_conf, file, sections,
1189 config_item_perf_lookup, logind_gperf_lookup,
1190 relaxed, allow_include, warn, m);
1193 int main(int argc, char *argv[]) {
1197 log_set_target(LOG_TARGET_AUTO);
1198 log_set_facility(LOG_AUTH);
1199 log_parse_environment();
1205 log_error("This program takes no arguments.");
1210 /* Always create the directories people can create inotify
1211 * watches in. Note that some applications might check for the
1212 * existence of /run/systemd/seats/ to determine whether
1213 * logind is available, so please always make sure this check
1215 r = mkdir_label("/run/systemd", 0755);
1216 if ( (r < 0) && (-EEXIST != r) )
1217 return log_error_errno(r, "Failed to create /run/systemd : %m");
1218 r = mkdir_label("/run/systemd/seats", 0755);
1219 if ( r < 0 && (-EEXIST != r) )
1220 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1221 r = mkdir_label("/run/systemd/users", 0755);
1222 if ( r < 0 && (-EEXIST != r) )
1223 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1224 r = mkdir_label("/run/systemd/sessions", 0755);
1225 if ( r < 0 && (-EEXIST != r) )
1226 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1227 r = mkdir_label("/run/systemd/machines", 0755);
1228 if ( r < 0 && (-EEXIST != r) )
1229 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1237 manager_parse_config_file(m);
1239 r = manager_startup(m);
1241 log_error_errno(r, "Failed to fully start up daemon: %m");
1245 log_debug("logind running as pid "PID_FMT, getpid());
1249 "STATUS=Processing requests...");
1253 log_debug("logind stopped as pid "PID_FMT, getpid());
1258 "STATUS=Shutting down...");
1262 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;