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 "alloc-util.h"
31 #include "bus-error.h"
33 #include "conf-parser.h"
35 #include "dirent-util.h"
37 #include "formats-util.h"
39 #include "signal-util.h"
41 #include "udev-util.h"
43 /// additional includes elogind needs
44 #include "cgroup.h" // From src/core/
46 #include "mount-setup.h" // From src/core
47 #include "musl_missing.h"
49 static void manager_free(Manager *m);
51 static Manager *manager_new(void) {
59 m->pin_cgroupfs_fd = -1;
61 m->console_active_fd = -1;
63 #if 0 /// elogind does not support autospawning of vts
64 m->reserve_vt_fd = -1;
70 m->inhibit_delay_max = 5 * USEC_PER_SEC;
71 m->handle_power_key = HANDLE_POWEROFF;
72 m->handle_suspend_key = HANDLE_SUSPEND;
73 m->handle_hibernate_key = HANDLE_HIBERNATE;
74 m->handle_lid_switch = HANDLE_SUSPEND;
75 m->handle_lid_switch_docked = HANDLE_IGNORE;
76 m->lid_switch_ignore_inhibited = true;
77 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
79 m->idle_action_usec = 30 * USEC_PER_MINUTE;
80 m->idle_action = HANDLE_IGNORE;
81 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
83 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
84 m->user_tasks_max = UINT64_C(4096);
86 m->devices = hashmap_new(&string_hash_ops);
87 m->seats = hashmap_new(&string_hash_ops);
88 m->sessions = hashmap_new(&string_hash_ops);
89 m->users = hashmap_new(NULL);
90 m->inhibitors = hashmap_new(&string_hash_ops);
91 m->buttons = hashmap_new(&string_hash_ops);
93 m->user_units = hashmap_new(&string_hash_ops);
94 m->session_units = hashmap_new(&string_hash_ops);
96 m->running_as = MANAGER_SYSTEM;
99 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
102 m->kill_exclude_users = strv_new("root", NULL);
103 if (!m->kill_exclude_users)
106 /* If elogind should be its own controller, mount its cgroup */
107 if (streq(SYSTEMD_CGROUP_CONTROLLER, "name=elogind")) {
108 r = mount_setup(true);
114 r = manager_setup_cgroup(m);
118 m->suspend_mode = NULL;
119 m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
120 if (!m->suspend_state)
122 m->hibernate_mode = strv_new("platform", "shutdown", NULL);
123 if (!m->hibernate_mode)
125 m->hibernate_state = strv_new("disk", NULL);
126 if (!m->hibernate_state)
128 m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
129 if (!m->hybrid_sleep_mode)
131 m->hybrid_sleep_state = strv_new("disk", NULL);
132 if (!m->hybrid_sleep_state)
135 m->udev = udev_new();
139 r = sd_event_default(&m->event);
143 sd_event_set_watchdog(m->event, true);
152 static void manager_free(Manager *m) {
162 while ((session = hashmap_first(m->sessions)))
163 session_free(session);
165 while ((u = hashmap_first(m->users)))
168 while ((d = hashmap_first(m->devices)))
171 while ((s = hashmap_first(m->seats)))
174 while ((i = hashmap_first(m->inhibitors)))
177 while ((b = hashmap_first(m->buttons)))
180 hashmap_free(m->devices);
181 hashmap_free(m->seats);
182 hashmap_free(m->sessions);
183 hashmap_free(m->users);
184 hashmap_free(m->inhibitors);
185 hashmap_free(m->buttons);
187 hashmap_free(m->user_units);
188 hashmap_free(m->session_units);
190 sd_event_source_unref(m->idle_action_event_source);
191 sd_event_source_unref(m->inhibit_timeout_source);
192 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
193 sd_event_source_unref(m->nologin_timeout_source);
194 sd_event_source_unref(m->wall_message_timeout_source);
196 sd_event_source_unref(m->console_active_event_source);
197 sd_event_source_unref(m->udev_seat_event_source);
198 sd_event_source_unref(m->udev_device_event_source);
199 sd_event_source_unref(m->udev_vcsa_event_source);
200 sd_event_source_unref(m->udev_button_event_source);
201 sd_event_source_unref(m->lid_switch_ignore_event_source);
203 safe_close(m->console_active_fd);
205 udev_monitor_unref(m->udev_seat_monitor);
206 udev_monitor_unref(m->udev_device_monitor);
207 udev_monitor_unref(m->udev_vcsa_monitor);
208 udev_monitor_unref(m->udev_button_monitor);
212 if (m->unlink_nologin)
213 (void) unlink("/run/nologin");
215 bus_verify_polkit_async_registry_free(m->polkit_registry);
217 sd_bus_unref(m->bus);
218 sd_event_unref(m->event);
220 #if 0 /// elogind does not support autospawning of vts
221 safe_close(m->reserve_vt_fd);
224 manager_shutdown_cgroup(m, true);
226 strv_free(m->kill_only_users);
227 strv_free(m->kill_exclude_users);
229 free(m->scheduled_shutdown_type);
230 free(m->scheduled_shutdown_tty);
231 free(m->wall_message);
233 strv_free(m->suspend_mode);
234 strv_free(m->suspend_state);
235 strv_free(m->hibernate_mode);
236 strv_free(m->hibernate_state);
237 strv_free(m->hybrid_sleep_mode);
238 strv_free(m->hybrid_sleep_state);
243 static int manager_enumerate_devices(Manager *m) {
244 struct udev_list_entry *item = NULL, *first = NULL;
245 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
250 /* Loads devices from udev and creates seats for them as
253 e = udev_enumerate_new(m->udev);
257 r = udev_enumerate_add_match_tag(e, "master-of-seat");
261 r = udev_enumerate_add_match_is_initialized(e);
265 r = udev_enumerate_scan_devices(e);
269 first = udev_enumerate_get_list_entry(e);
270 udev_list_entry_foreach(item, first) {
271 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
274 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
278 k = manager_process_seat_device(m, d);
286 static int manager_enumerate_buttons(Manager *m) {
287 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
288 struct udev_list_entry *item = NULL, *first = NULL;
293 /* Loads buttons from udev */
295 if (m->handle_power_key == HANDLE_IGNORE &&
296 m->handle_suspend_key == HANDLE_IGNORE &&
297 m->handle_hibernate_key == HANDLE_IGNORE &&
298 m->handle_lid_switch == HANDLE_IGNORE &&
299 m->handle_lid_switch_docked == HANDLE_IGNORE)
302 e = udev_enumerate_new(m->udev);
306 r = udev_enumerate_add_match_subsystem(e, "input");
310 r = udev_enumerate_add_match_tag(e, "power-switch");
314 r = udev_enumerate_add_match_is_initialized(e);
318 r = udev_enumerate_scan_devices(e);
322 first = udev_enumerate_get_list_entry(e);
323 udev_list_entry_foreach(item, first) {
324 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
327 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
331 k = manager_process_button_device(m, d);
339 static int manager_enumerate_seats(Manager *m) {
340 _cleanup_closedir_ DIR *d = NULL;
346 /* This loads data about seats stored on disk, but does not
347 * actually create any seats. Removes data of seats that no
350 d = opendir("/run/systemd/seats");
355 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
358 FOREACH_DIRENT(de, d, return -errno) {
362 if (!dirent_is_file(de))
365 s = hashmap_get(m->seats, de->d_name);
367 unlinkat(dirfd(d), de->d_name, 0);
379 static int manager_enumerate_linger_users(Manager *m) {
380 _cleanup_closedir_ DIR *d = NULL;
386 d = opendir("/var/lib/systemd/linger");
391 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
394 FOREACH_DIRENT(de, d, return -errno) {
397 if (!dirent_is_file(de))
400 k = manager_add_user_by_name(m, de->d_name, NULL);
402 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
410 static int manager_enumerate_users(Manager *m) {
411 _cleanup_closedir_ DIR *d = NULL;
417 /* Add lingering users */
418 r = manager_enumerate_linger_users(m);
420 /* Read in user data stored on disk */
421 d = opendir("/run/systemd/users");
426 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
429 FOREACH_DIRENT(de, d, return -errno) {
432 if (!dirent_is_file(de))
435 k = manager_add_user_by_name(m, de->d_name, &u);
437 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
443 user_add_to_gc_queue(u);
453 static int manager_enumerate_sessions(Manager *m) {
454 _cleanup_closedir_ DIR *d = NULL;
460 /* Read in session data stored on disk */
461 d = opendir("/run/systemd/sessions");
466 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
469 FOREACH_DIRENT(de, d, return -errno) {
473 if (!dirent_is_file(de))
476 if (!session_id_valid(de->d_name)) {
477 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
482 k = manager_add_session(m, de->d_name, &s);
484 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
490 session_add_to_gc_queue(s);
500 static int manager_enumerate_inhibitors(Manager *m) {
501 _cleanup_closedir_ DIR *d = NULL;
507 d = opendir("/run/systemd/inhibit");
512 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
515 FOREACH_DIRENT(de, d, return -errno) {
519 if (!dirent_is_file(de))
522 k = manager_add_inhibitor(m, de->d_name, &i);
524 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
529 k = inhibitor_load(i);
537 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
538 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
539 Manager *m = userdata;
543 d = udev_monitor_receive_device(m->udev_seat_monitor);
547 manager_process_seat_device(m, d);
551 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
552 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
553 Manager *m = userdata;
557 d = udev_monitor_receive_device(m->udev_device_monitor);
561 manager_process_seat_device(m, d);
565 #if 0 /// UNNEEDED by elogind
566 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
567 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
568 Manager *m = userdata;
573 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
577 name = udev_device_get_sysname(d);
579 /* Whenever a VCSA device is removed try to reallocate our
580 * VTs, to make sure our auto VTs never go away. */
582 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
583 seat_preallocate_vts(m->seat0);
589 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
590 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
591 Manager *m = userdata;
595 d = udev_monitor_receive_device(m->udev_button_monitor);
599 manager_process_button_device(m, d);
603 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
604 Manager *m = userdata;
608 assert(m->console_active_fd == fd);
610 seat_read_active_vt(m->seat0);
614 #if 0 /// UNNEEDED by elogind
615 static int manager_reserve_vt(Manager *m) {
616 _cleanup_free_ char *p = NULL;
620 if (m->reserve_vt <= 0)
623 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
626 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
627 if (m->reserve_vt_fd < 0) {
629 /* Don't complain on VT-less systems */
631 log_warning_errno(errno, "Failed to pin reserved VT: %m");
639 static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) {
640 Manager *m = userdata;
648 r = sd_bus_message_read(message, "s", &cgroup);
650 bus_log_parse_error(r);
654 s = hashmap_get(m->sessions, cgroup);
657 log_warning("Session not found: %s", cgroup);
667 static int manager_connect_bus(Manager *m) {
668 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
674 r = sd_bus_default_system(&m->bus);
676 return log_error_errno(r, "Failed to connect to system bus: %m");
678 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
680 return log_error_errno(r, "Failed to add manager object vtable: %m");
682 /* elogind relies on signals from its release agent */
683 r = sd_bus_add_match(m->bus, NULL,
685 "interface='org.freedesktop.elogind.Agent',"
687 "path='/org/freedesktop/elogind/agent'",
688 signal_agent_released, m);
690 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
692 return log_error_errno(r, "Failed to add seat object vtable: %m");
694 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
696 return log_error_errno(r, "Failed to add seat enumerator: %m");
698 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
700 return log_error_errno(r, "Failed to add session object vtable: %m");
702 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
704 return log_error_errno(r, "Failed to add session enumerator: %m");
706 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
708 return log_error_errno(r, "Failed to add user object vtable: %m");
710 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
712 return log_error_errno(r, "Failed to add user enumerator: %m");
714 #if 0 /// 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 return log_error_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 return log_error_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 return log_error_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 return log_error_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_error("Failed to enable subscription: %s", bus_error_message(&error, r));
772 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
774 return log_error_errno(r, "Failed to register name: %m");
776 r = sd_bus_attach_event(m->bus, m->event, 0);
778 return log_error_errno(r, "Failed to attach bus to event loop: %m");
783 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
785 Session *active, *iter;
788 * We got a VT-switch signal and we have to acknowledge it immediately.
789 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
790 * old user-space might run multiple sessions on a single VT, *sigh*.
791 * Therefore, we have to iterate all sessions and find one with a vtfd
792 * on the requested VT.
793 * As only VTs with active controllers have VT_PROCESS set, our current
794 * notion of the active VT might be wrong (for instance if the switch
795 * happens while we setup VT_PROCESS). Therefore, read the current VT
796 * first and then use s->active->vtnr as reference. Note that this is
797 * not racy, as no further VT-switch can happen as long as we're in
798 * synchronous VT_PROCESS mode.
802 seat_read_active_vt(m->seat0);
804 active = m->seat0->active;
805 if (!active || active->vtnr < 1) {
806 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
810 if (active->vtfd >= 0) {
811 session_leave_vt(active);
813 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
814 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
815 session_leave_vt(iter);
824 static int manager_connect_console(Manager *m) {
828 assert(m->console_active_fd < 0);
830 /* On certain architectures (S390 and Xen, and containers),
831 /dev/tty0 does not exist, so don't fail if we can't open
833 if (access("/dev/tty0", F_OK) < 0)
836 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
837 if (m->console_active_fd < 0) {
839 /* On some systems the device node /dev/tty0 may exist
840 * even though /sys/class/tty/tty0 does not. */
844 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
847 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
849 log_error("Failed to watch foreground console");
854 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
855 * as VT-acquire signal. We ignore any acquire-events (yes, we still
856 * have to provide a valid signal-number for it!) and acknowledge all
857 * release events immediately.
860 if (SIGRTMIN + 1 > SIGRTMAX) {
861 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
865 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
866 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
868 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
875 static int manager_connect_udev(Manager *m) {
879 assert(!m->udev_seat_monitor);
880 assert(!m->udev_device_monitor);
881 assert(!m->udev_vcsa_monitor);
882 assert(!m->udev_button_monitor);
884 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
885 if (!m->udev_seat_monitor)
888 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
892 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
896 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);
900 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
901 if (!m->udev_device_monitor)
904 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
908 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
912 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
916 r = udev_monitor_enable_receiving(m->udev_device_monitor);
920 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);
924 /* Don't watch keys if nobody cares */
925 if (m->handle_power_key != HANDLE_IGNORE ||
926 m->handle_suspend_key != HANDLE_IGNORE ||
927 m->handle_hibernate_key != HANDLE_IGNORE ||
928 m->handle_lid_switch != HANDLE_IGNORE ||
929 m->handle_lid_switch_docked != HANDLE_IGNORE) {
931 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
932 if (!m->udev_button_monitor)
935 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
939 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
943 r = udev_monitor_enable_receiving(m->udev_button_monitor);
947 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);
952 /* Don't bother watching VCSA devices, if nobody cares */
953 #if 0 /// elogind does not support autospawning of vts
954 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
956 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
957 if (!m->udev_vcsa_monitor)
960 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
964 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
968 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);
977 static void manager_gc(Manager *m, bool drop_not_started) {
984 while ((seat = m->seat_gc_queue)) {
985 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
986 seat->in_gc_queue = false;
988 if (!seat_check_gc(seat, drop_not_started)) {
989 seat_stop(seat, false);
994 while ((session = m->session_gc_queue)) {
995 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
996 session->in_gc_queue = false;
998 /* First, if we are not closing yet, initiate stopping */
999 if (!session_check_gc(session, drop_not_started) &&
1000 session_get_state(session) != SESSION_CLOSING)
1001 session_stop(session, false);
1003 /* Normally, this should make the session referenced
1004 * again, if it doesn't then let's get rid of it
1006 if (!session_check_gc(session, drop_not_started)) {
1007 session_finalize(session);
1008 session_free(session);
1012 while ((user = m->user_gc_queue)) {
1013 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1014 user->in_gc_queue = false;
1016 /* First step: queue stop jobs */
1017 if (!user_check_gc(user, drop_not_started))
1018 user_stop(user, false);
1020 /* Second step: finalize user */
1021 if (!user_check_gc(user, drop_not_started)) {
1022 user_finalize(user);
1028 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1029 Manager *m = userdata;
1030 struct dual_timestamp since;
1036 if (m->idle_action == HANDLE_IGNORE ||
1037 m->idle_action_usec <= 0)
1040 n = now(CLOCK_MONOTONIC);
1042 r = manager_get_idle_hint(m, &since);
1044 /* Not idle. Let's check if after a timeout it might be idle then. */
1045 elapse = n + m->idle_action_usec;
1047 /* Idle! Let's see if it's time to do something, or if
1048 * we shall sleep for longer. */
1050 if (n >= since.monotonic + m->idle_action_usec &&
1051 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1052 log_info("System idle. Taking action.");
1054 manager_handle_action(m, 0, m->idle_action, false, false);
1055 m->idle_action_not_before_usec = n;
1058 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1061 if (!m->idle_action_event_source) {
1063 r = sd_event_add_time(
1065 &m->idle_action_event_source,
1067 elapse, USEC_PER_SEC*30,
1068 manager_dispatch_idle_action, m);
1070 return log_error_errno(r, "Failed to add idle event source: %m");
1072 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1074 return log_error_errno(r, "Failed to set idle event source priority: %m");
1076 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1078 return log_error_errno(r, "Failed to set idle event timer: %m");
1080 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1082 return log_error_errno(r, "Failed to enable idle event timer: %m");
1088 static int manager_startup(Manager *m) {
1094 Inhibitor *inhibitor;
1099 /* Connect to console */
1100 r = manager_connect_console(m);
1104 /* Connect to udev */
1105 r = manager_connect_udev(m);
1107 return log_error_errno(r, "Failed to create udev watchers: %m");
1109 /* Connect to the bus */
1110 r = manager_connect_bus(m);
1114 /* Instantiate magic seat 0 */
1115 r = manager_add_seat(m, "seat0", &m->seat0);
1117 return log_error_errno(r, "Failed to add seat0: %m");
1119 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1121 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1123 /* Deserialize state */
1124 r = manager_enumerate_devices(m);
1126 log_warning_errno(r, "Device enumeration failed: %m");
1128 r = manager_enumerate_seats(m);
1130 log_warning_errno(r, "Seat enumeration failed: %m");
1132 r = manager_enumerate_users(m);
1134 log_warning_errno(r, "User enumeration failed: %m");
1136 r = manager_enumerate_sessions(m);
1138 log_warning_errno(r, "Session enumeration failed: %m");
1140 r = manager_enumerate_inhibitors(m);
1142 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1144 r = manager_enumerate_buttons(m);
1146 log_warning_errno(r, "Button enumeration failed: %m");
1148 /* Remove stale objects before we start them */
1149 manager_gc(m, false);
1151 /* Reserve the special reserved VT */
1152 #if 0 /// elogind does not support autospawning of vts
1153 manager_reserve_vt(m);
1156 /* And start everything */
1157 HASHMAP_FOREACH(seat, m->seats, i)
1160 HASHMAP_FOREACH(user, m->users, i)
1163 HASHMAP_FOREACH(session, m->sessions, i)
1164 session_start(session);
1166 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1167 inhibitor_start(inhibitor);
1169 HASHMAP_FOREACH(button, m->buttons, i)
1170 button_check_switches(button);
1172 manager_dispatch_idle_action(NULL, 0, m);
1177 static int manager_run(Manager *m) {
1183 r = sd_event_get_state(m->event);
1186 if (r == SD_EVENT_FINISHED)
1189 manager_gc(m, true);
1191 r = manager_dispatch_delayed(m, false);
1197 r = sd_event_run(m->event, (uint64_t) -1);
1203 static int manager_parse_config_file(Manager *m) {
1204 #if 0 /// elogind parses its own config file
1208 return config_parse_many(PKGSYSCONFDIR "/logind.conf",
1209 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
1211 config_item_perf_lookup, logind_gperf_lookup,
1214 const char *unit = NULL, *logind_conf, *sections;
1216 bool relaxed = false, allow_include = false, warn = true;
1220 logind_conf = getenv("ELOGIND_CONF_FILE");
1222 logind_conf = PKGSYSCONFDIR "/logind.conf";
1223 sections = "Login\0Sleep\0";
1225 return config_parse(unit, logind_conf, file, sections,
1226 config_item_perf_lookup, logind_gperf_lookup,
1227 relaxed, allow_include, warn, m);
1231 int main(int argc, char *argv[]) {
1235 elogind_set_program_name(argv[0]);
1236 log_set_target(LOG_TARGET_AUTO);
1237 log_set_facility(LOG_AUTH);
1238 log_parse_environment();
1241 #ifdef ENABLE_DEBUG_ELOGIND
1242 log_set_max_level(LOG_DEBUG);
1243 #endif // ENABLE_DEBUG_ELOGIND
1248 log_error("This program takes no arguments.");
1253 /* Always create the directories people can create inotify
1254 * watches in. Note that some applications might check for the
1255 * existence of /run/systemd/seats/ to determine whether
1256 * logind is available, so please always make sure this check
1258 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1259 mkdir_label("/run/systemd/seats", 0755);
1260 mkdir_label("/run/systemd/users", 0755);
1261 mkdir_label("/run/systemd/sessions", 0755);
1263 r = mkdir_label("/run/systemd", 0755);
1264 if ( (r < 0) && (-EEXIST != r) )
1265 return log_error_errno(r, "Failed to create /run/systemd : %m");
1266 r = mkdir_label("/run/systemd/seats", 0755);
1267 if ( r < 0 && (-EEXIST != r) )
1268 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1269 r = mkdir_label("/run/systemd/users", 0755);
1270 if ( r < 0 && (-EEXIST != r) )
1271 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1272 r = mkdir_label("/run/systemd/sessions", 0755);
1273 if ( r < 0 && (-EEXIST != r) )
1274 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1275 r = mkdir_label("/run/systemd/machines", 0755);
1276 if ( r < 0 && (-EEXIST != r) )
1277 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1286 manager_parse_config_file(m);
1288 r = manager_startup(m);
1290 log_error_errno(r, "Failed to fully start up daemon: %m");
1294 log_debug("elogind running as pid "PID_FMT, getpid());
1298 "STATUS=Processing requests...");
1302 log_debug("elogind stopped as pid "PID_FMT, getpid());
1307 "STATUS=Shutting down...");
1311 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;