2 This file is part of systemd.
4 Copyright 2011 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "sd-daemon.h"
28 #include "alloc-util.h"
29 #include "bus-error.h"
31 #include "conf-parser.h"
33 #include "dirent-util.h"
35 #include "formats-util.h"
37 #include "selinux-util.h"
38 #include "signal-util.h"
40 #include "udev-util.h"
42 /// additional includes elogind needs
43 #include "cgroup.h" // From src/core/
45 #include "mount-setup.h" // From src/core
46 #include "musl_missing.h"
48 static void manager_free(Manager *m);
50 static Manager *manager_new(void) {
58 m->pin_cgroupfs_fd = -1;
60 m->console_active_fd = -1;
62 #if 0 /// elogind does not support autospawning of vts
63 m->reserve_vt_fd = -1;
69 m->inhibit_delay_max = 5 * USEC_PER_SEC;
70 m->handle_power_key = HANDLE_POWEROFF;
71 m->handle_suspend_key = HANDLE_SUSPEND;
72 m->handle_hibernate_key = HANDLE_HIBERNATE;
73 m->handle_lid_switch = HANDLE_SUSPEND;
74 m->handle_lid_switch_docked = HANDLE_IGNORE;
75 m->lid_switch_ignore_inhibited = true;
76 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
78 m->idle_action_usec = 30 * USEC_PER_MINUTE;
79 m->idle_action = HANDLE_IGNORE;
80 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
82 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
83 m->user_tasks_max = UINT64_C(12288);
85 m->devices = hashmap_new(&string_hash_ops);
86 m->seats = hashmap_new(&string_hash_ops);
87 m->sessions = hashmap_new(&string_hash_ops);
88 m->users = hashmap_new(NULL);
89 m->inhibitors = hashmap_new(&string_hash_ops);
90 m->buttons = hashmap_new(&string_hash_ops);
92 m->user_units = hashmap_new(&string_hash_ops);
93 m->session_units = hashmap_new(&string_hash_ops);
95 m->running_as = MANAGER_SYSTEM;
98 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
101 m->kill_exclude_users = strv_new("root", NULL);
102 if (!m->kill_exclude_users)
105 /* If elogind should be its own controller, mount its cgroup */
106 if (streq(SYSTEMD_CGROUP_CONTROLLER, "name=elogind")) {
107 r = mount_setup(true);
113 r = manager_setup_cgroup(m);
117 m->suspend_mode = NULL;
118 m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
119 if (!m->suspend_state)
121 m->hibernate_mode = strv_new("platform", "shutdown", NULL);
122 if (!m->hibernate_mode)
124 m->hibernate_state = strv_new("disk", NULL);
125 if (!m->hibernate_state)
127 m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
128 if (!m->hybrid_sleep_mode)
130 m->hybrid_sleep_state = strv_new("disk", NULL);
131 if (!m->hybrid_sleep_state)
134 m->udev = udev_new();
138 r = sd_event_default(&m->event);
142 sd_event_set_watchdog(m->event, true);
151 static void manager_free(Manager *m) {
161 while ((session = hashmap_first(m->sessions)))
162 session_free(session);
164 while ((u = hashmap_first(m->users)))
167 while ((d = hashmap_first(m->devices)))
170 while ((s = hashmap_first(m->seats)))
173 while ((i = hashmap_first(m->inhibitors)))
176 while ((b = hashmap_first(m->buttons)))
179 hashmap_free(m->devices);
180 hashmap_free(m->seats);
181 hashmap_free(m->sessions);
182 hashmap_free(m->users);
183 hashmap_free(m->inhibitors);
184 hashmap_free(m->buttons);
186 hashmap_free(m->user_units);
187 hashmap_free(m->session_units);
189 sd_event_source_unref(m->idle_action_event_source);
190 sd_event_source_unref(m->inhibit_timeout_source);
191 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
192 sd_event_source_unref(m->nologin_timeout_source);
193 sd_event_source_unref(m->wall_message_timeout_source);
195 sd_event_source_unref(m->console_active_event_source);
196 sd_event_source_unref(m->udev_seat_event_source);
197 sd_event_source_unref(m->udev_device_event_source);
198 sd_event_source_unref(m->udev_vcsa_event_source);
199 sd_event_source_unref(m->udev_button_event_source);
200 sd_event_source_unref(m->lid_switch_ignore_event_source);
202 safe_close(m->console_active_fd);
204 udev_monitor_unref(m->udev_seat_monitor);
205 udev_monitor_unref(m->udev_device_monitor);
206 udev_monitor_unref(m->udev_vcsa_monitor);
207 udev_monitor_unref(m->udev_button_monitor);
211 if (m->unlink_nologin)
212 (void) unlink("/run/nologin");
214 bus_verify_polkit_async_registry_free(m->polkit_registry);
216 sd_bus_unref(m->bus);
217 sd_event_unref(m->event);
219 #if 0 /// elogind does not support autospawning of vts
220 safe_close(m->reserve_vt_fd);
223 manager_shutdown_cgroup(m, true);
225 strv_free(m->kill_only_users);
226 strv_free(m->kill_exclude_users);
228 free(m->scheduled_shutdown_type);
229 free(m->scheduled_shutdown_tty);
230 free(m->wall_message);
232 strv_free(m->suspend_mode);
233 strv_free(m->suspend_state);
234 strv_free(m->hibernate_mode);
235 strv_free(m->hibernate_state);
236 strv_free(m->hybrid_sleep_mode);
237 strv_free(m->hybrid_sleep_state);
242 static int manager_enumerate_devices(Manager *m) {
243 struct udev_list_entry *item = NULL, *first = NULL;
244 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
249 /* Loads devices from udev and creates seats for them as
252 e = udev_enumerate_new(m->udev);
256 r = udev_enumerate_add_match_tag(e, "master-of-seat");
260 r = udev_enumerate_add_match_is_initialized(e);
264 r = udev_enumerate_scan_devices(e);
268 first = udev_enumerate_get_list_entry(e);
269 udev_list_entry_foreach(item, first) {
270 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
273 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
277 k = manager_process_seat_device(m, d);
285 static int manager_enumerate_buttons(Manager *m) {
286 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
287 struct udev_list_entry *item = NULL, *first = NULL;
292 /* Loads buttons from udev */
294 if (m->handle_power_key == HANDLE_IGNORE &&
295 m->handle_suspend_key == HANDLE_IGNORE &&
296 m->handle_hibernate_key == HANDLE_IGNORE &&
297 m->handle_lid_switch == HANDLE_IGNORE &&
298 m->handle_lid_switch_docked == HANDLE_IGNORE)
301 e = udev_enumerate_new(m->udev);
305 r = udev_enumerate_add_match_subsystem(e, "input");
309 r = udev_enumerate_add_match_tag(e, "power-switch");
313 r = udev_enumerate_add_match_is_initialized(e);
317 r = udev_enumerate_scan_devices(e);
321 first = udev_enumerate_get_list_entry(e);
322 udev_list_entry_foreach(item, first) {
323 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
326 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
330 k = manager_process_button_device(m, d);
338 static int manager_enumerate_seats(Manager *m) {
339 _cleanup_closedir_ DIR *d = NULL;
345 /* This loads data about seats stored on disk, but does not
346 * actually create any seats. Removes data of seats that no
349 d = opendir("/run/systemd/seats");
354 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
357 FOREACH_DIRENT(de, d, return -errno) {
361 if (!dirent_is_file(de))
364 s = hashmap_get(m->seats, de->d_name);
366 unlinkat(dirfd(d), de->d_name, 0);
378 static int manager_enumerate_linger_users(Manager *m) {
379 _cleanup_closedir_ DIR *d = NULL;
385 d = opendir("/var/lib/systemd/linger");
390 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %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, NULL);
401 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
409 static int manager_enumerate_users(Manager *m) {
410 _cleanup_closedir_ DIR *d = NULL;
416 /* Add lingering users */
417 r = manager_enumerate_linger_users(m);
419 /* Read in user data stored on disk */
420 d = opendir("/run/systemd/users");
425 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
428 FOREACH_DIRENT(de, d, return -errno) {
431 if (!dirent_is_file(de))
434 k = manager_add_user_by_name(m, de->d_name, &u);
436 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
442 user_add_to_gc_queue(u);
452 static int manager_enumerate_sessions(Manager *m) {
453 _cleanup_closedir_ DIR *d = NULL;
459 /* Read in session data stored on disk */
460 d = opendir("/run/systemd/sessions");
465 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
468 FOREACH_DIRENT(de, d, return -errno) {
472 if (!dirent_is_file(de))
475 if (!session_id_valid(de->d_name)) {
476 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
481 k = manager_add_session(m, de->d_name, &s);
483 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
489 session_add_to_gc_queue(s);
499 static int manager_enumerate_inhibitors(Manager *m) {
500 _cleanup_closedir_ DIR *d = NULL;
506 d = opendir("/run/systemd/inhibit");
511 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
514 FOREACH_DIRENT(de, d, return -errno) {
518 if (!dirent_is_file(de))
521 k = manager_add_inhibitor(m, de->d_name, &i);
523 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
528 k = inhibitor_load(i);
536 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
537 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
538 Manager *m = userdata;
542 d = udev_monitor_receive_device(m->udev_seat_monitor);
546 manager_process_seat_device(m, d);
550 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
551 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
552 Manager *m = userdata;
556 d = udev_monitor_receive_device(m->udev_device_monitor);
560 manager_process_seat_device(m, d);
564 #if 0 /// UNNEEDED by elogind
565 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
566 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
567 Manager *m = userdata;
572 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
576 name = udev_device_get_sysname(d);
578 /* Whenever a VCSA device is removed try to reallocate our
579 * VTs, to make sure our auto VTs never go away. */
581 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
582 seat_preallocate_vts(m->seat0);
588 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
589 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
590 Manager *m = userdata;
594 d = udev_monitor_receive_device(m->udev_button_monitor);
598 manager_process_button_device(m, d);
602 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
603 Manager *m = userdata;
607 assert(m->console_active_fd == fd);
609 seat_read_active_vt(m->seat0);
613 #if 0 /// 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_(sd_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.elogind.Agent',"
686 "path='/org/freedesktop/elogind/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 #if 0 /// elogind does not support systemd as PID 1
714 r = sd_bus_add_match(m->bus,
717 "sender='org.freedesktop.systemd1',"
718 "interface='org.freedesktop.systemd1.Manager',"
719 "member='JobRemoved',"
720 "path='/org/freedesktop/systemd1'",
721 match_job_removed, m);
723 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
725 r = sd_bus_add_match(m->bus,
728 "sender='org.freedesktop.systemd1',"
729 "interface='org.freedesktop.systemd1.Manager',"
730 "member='UnitRemoved',"
731 "path='/org/freedesktop/systemd1'",
732 match_unit_removed, m);
734 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
736 r = sd_bus_add_match(m->bus,
739 "sender='org.freedesktop.systemd1',"
740 "interface='org.freedesktop.DBus.Properties',"
741 "member='PropertiesChanged'",
742 match_properties_changed, m);
744 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
746 r = sd_bus_add_match(m->bus,
749 "sender='org.freedesktop.systemd1',"
750 "interface='org.freedesktop.systemd1.Manager',"
751 "member='Reloading',"
752 "path='/org/freedesktop/systemd1'",
755 return log_error_errno(r, "Failed to add match for Reloading: %m");
757 r = sd_bus_call_method(
759 "org.freedesktop.systemd1",
760 "/org/freedesktop/systemd1",
761 "org.freedesktop.systemd1.Manager",
766 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
771 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
773 return log_error_errno(r, "Failed to register name: %m");
775 r = sd_bus_attach_event(m->bus, m->event, 0);
777 return log_error_errno(r, "Failed to attach bus to event loop: %m");
782 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
784 Session *active, *iter;
787 * We got a VT-switch signal and we have to acknowledge it immediately.
788 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
789 * old user-space might run multiple sessions on a single VT, *sigh*.
790 * Therefore, we have to iterate all sessions and find one with a vtfd
791 * on the requested VT.
792 * As only VTs with active controllers have VT_PROCESS set, our current
793 * notion of the active VT might be wrong (for instance if the switch
794 * happens while we setup VT_PROCESS). Therefore, read the current VT
795 * first and then use s->active->vtnr as reference. Note that this is
796 * not racy, as no further VT-switch can happen as long as we're in
797 * synchronous VT_PROCESS mode.
801 seat_read_active_vt(m->seat0);
803 active = m->seat0->active;
804 if (!active || active->vtnr < 1) {
805 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
809 if (active->vtfd >= 0) {
810 session_leave_vt(active);
812 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
813 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
814 session_leave_vt(iter);
823 static int manager_connect_console(Manager *m) {
827 assert(m->console_active_fd < 0);
829 /* On certain architectures (S390 and Xen, and containers),
830 /dev/tty0 does not exist, so don't fail if we can't open
832 if (access("/dev/tty0", F_OK) < 0)
835 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
836 if (m->console_active_fd < 0) {
838 /* On some systems the device node /dev/tty0 may exist
839 * even though /sys/class/tty/tty0 does not. */
843 return 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 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
865 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
867 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
874 static int manager_connect_udev(Manager *m) {
878 assert(!m->udev_seat_monitor);
879 assert(!m->udev_device_monitor);
880 assert(!m->udev_vcsa_monitor);
881 assert(!m->udev_button_monitor);
883 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
884 if (!m->udev_seat_monitor)
887 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
891 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
895 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);
899 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
900 if (!m->udev_device_monitor)
903 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
907 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
911 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
915 r = udev_monitor_enable_receiving(m->udev_device_monitor);
919 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);
923 /* Don't watch keys if nobody cares */
924 if (m->handle_power_key != HANDLE_IGNORE ||
925 m->handle_suspend_key != HANDLE_IGNORE ||
926 m->handle_hibernate_key != HANDLE_IGNORE ||
927 m->handle_lid_switch != HANDLE_IGNORE ||
928 m->handle_lid_switch_docked != HANDLE_IGNORE) {
930 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
931 if (!m->udev_button_monitor)
934 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
938 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
942 r = udev_monitor_enable_receiving(m->udev_button_monitor);
946 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);
951 /* Don't bother watching VCSA devices, if nobody cares */
952 #if 0 /// elogind does not support autospawning of vts
953 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
955 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
956 if (!m->udev_vcsa_monitor)
959 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
963 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
967 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);
976 static void manager_gc(Manager *m, bool drop_not_started) {
983 while ((seat = m->seat_gc_queue)) {
984 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
985 seat->in_gc_queue = false;
987 if (!seat_check_gc(seat, drop_not_started)) {
988 seat_stop(seat, false);
993 while ((session = m->session_gc_queue)) {
994 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
995 session->in_gc_queue = false;
997 /* First, if we are not closing yet, initiate stopping */
998 if (!session_check_gc(session, drop_not_started) &&
999 session_get_state(session) != SESSION_CLOSING)
1000 session_stop(session, false);
1002 /* Normally, this should make the session referenced
1003 * again, if it doesn't then let's get rid of it
1005 if (!session_check_gc(session, drop_not_started)) {
1006 session_finalize(session);
1007 session_free(session);
1011 while ((user = m->user_gc_queue)) {
1012 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1013 user->in_gc_queue = false;
1015 /* First step: queue stop jobs */
1016 if (!user_check_gc(user, drop_not_started))
1017 user_stop(user, false);
1019 /* Second step: finalize user */
1020 if (!user_check_gc(user, drop_not_started)) {
1021 user_finalize(user);
1027 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1028 Manager *m = userdata;
1029 struct dual_timestamp since;
1035 if (m->idle_action == HANDLE_IGNORE ||
1036 m->idle_action_usec <= 0)
1039 n = now(CLOCK_MONOTONIC);
1041 r = manager_get_idle_hint(m, &since);
1043 /* Not idle. Let's check if after a timeout it might be idle then. */
1044 elapse = n + m->idle_action_usec;
1046 /* Idle! Let's see if it's time to do something, or if
1047 * we shall sleep for longer. */
1049 if (n >= since.monotonic + m->idle_action_usec &&
1050 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1051 log_info("System idle. Taking action.");
1053 manager_handle_action(m, 0, m->idle_action, false, false);
1054 m->idle_action_not_before_usec = n;
1057 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1060 if (!m->idle_action_event_source) {
1062 r = sd_event_add_time(
1064 &m->idle_action_event_source,
1066 elapse, USEC_PER_SEC*30,
1067 manager_dispatch_idle_action, m);
1069 return log_error_errno(r, "Failed to add idle event source: %m");
1071 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1073 return log_error_errno(r, "Failed to set idle event source priority: %m");
1075 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1077 return log_error_errno(r, "Failed to set idle event timer: %m");
1079 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1081 return log_error_errno(r, "Failed to enable idle event timer: %m");
1087 static int manager_startup(Manager *m) {
1093 Inhibitor *inhibitor;
1098 /* Connect to console */
1099 r = manager_connect_console(m);
1103 /* Connect to udev */
1104 r = manager_connect_udev(m);
1106 return log_error_errno(r, "Failed to create udev watchers: %m");
1108 /* Connect to the bus */
1109 r = manager_connect_bus(m);
1113 /* Instantiate magic seat 0 */
1114 r = manager_add_seat(m, "seat0", &m->seat0);
1116 return log_error_errno(r, "Failed to add seat0: %m");
1118 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1120 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1122 /* Deserialize state */
1123 r = manager_enumerate_devices(m);
1125 log_warning_errno(r, "Device enumeration failed: %m");
1127 r = manager_enumerate_seats(m);
1129 log_warning_errno(r, "Seat enumeration failed: %m");
1131 r = manager_enumerate_users(m);
1133 log_warning_errno(r, "User enumeration failed: %m");
1135 r = manager_enumerate_sessions(m);
1137 log_warning_errno(r, "Session enumeration failed: %m");
1139 r = manager_enumerate_inhibitors(m);
1141 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1143 r = manager_enumerate_buttons(m);
1145 log_warning_errno(r, "Button enumeration failed: %m");
1147 /* Remove stale objects before we start them */
1148 manager_gc(m, false);
1150 /* Reserve the special reserved VT */
1151 #if 0 /// elogind does not support autospawning of vts
1152 manager_reserve_vt(m);
1155 /* And start everything */
1156 HASHMAP_FOREACH(seat, m->seats, i)
1159 HASHMAP_FOREACH(user, m->users, i)
1162 HASHMAP_FOREACH(session, m->sessions, i)
1163 session_start(session);
1165 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1166 inhibitor_start(inhibitor);
1168 HASHMAP_FOREACH(button, m->buttons, i)
1169 button_check_switches(button);
1171 manager_dispatch_idle_action(NULL, 0, m);
1176 static int manager_run(Manager *m) {
1182 r = sd_event_get_state(m->event);
1185 if (r == SD_EVENT_FINISHED)
1188 manager_gc(m, true);
1190 r = manager_dispatch_delayed(m, false);
1196 r = sd_event_run(m->event, (uint64_t) -1);
1202 static int manager_parse_config_file(Manager *m) {
1203 #if 0 /// elogind parses its own config file
1207 return config_parse_many(PKGSYSCONFDIR "/logind.conf",
1208 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
1210 config_item_perf_lookup, logind_gperf_lookup,
1213 const char *unit = NULL, *logind_conf, *sections;
1215 bool relaxed = false, allow_include = false, warn = true;
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);
1230 int main(int argc, char *argv[]) {
1234 elogind_set_program_name(argv[0]);
1235 log_set_target(LOG_TARGET_AUTO);
1236 log_set_facility(LOG_AUTH);
1237 log_parse_environment();
1240 #ifdef ENABLE_DEBUG_ELOGIND
1241 log_set_max_level(LOG_DEBUG);
1242 #endif // ENABLE_DEBUG_ELOGIND
1247 log_error("This program takes no arguments.");
1252 r = mac_selinux_init("/run");
1254 log_error_errno(r, "Could not initialize labelling: %m");
1258 /* Always create the directories people can create inotify
1259 * watches in. Note that some applications might check for the
1260 * existence of /run/systemd/seats/ to determine whether
1261 * logind is available, so please always make sure this check
1263 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1264 mkdir_label("/run/systemd/seats", 0755);
1265 mkdir_label("/run/systemd/users", 0755);
1266 mkdir_label("/run/systemd/sessions", 0755);
1268 r = mkdir_label("/run/systemd", 0755);
1269 if ( (r < 0) && (-EEXIST != r) )
1270 return log_error_errno(r, "Failed to create /run/systemd : %m");
1271 r = mkdir_label("/run/systemd/seats", 0755);
1272 if ( r < 0 && (-EEXIST != r) )
1273 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1274 r = mkdir_label("/run/systemd/users", 0755);
1275 if ( r < 0 && (-EEXIST != r) )
1276 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1277 r = mkdir_label("/run/systemd/sessions", 0755);
1278 if ( r < 0 && (-EEXIST != r) )
1279 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1280 r = mkdir_label("/run/systemd/machines", 0755);
1281 if ( r < 0 && (-EEXIST != r) )
1282 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1291 manager_parse_config_file(m);
1293 r = manager_startup(m);
1295 log_error_errno(r, "Failed to fully start up daemon: %m");
1299 log_debug("elogind running as pid "PID_FMT, getpid());
1303 "STATUS=Processing requests...");
1307 log_debug("elogind stopped as pid "PID_FMT, getpid());
1312 "STATUS=Shutting down...");
1316 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;