1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2011 Lennart Poettering
13 #if 0 /// elogind needs the systems udev header
18 #include "sd-daemon.h"
20 #include "alloc-util.h"
21 #include "bus-error.h"
23 //#include "cgroup-util.h"
25 #include "dirent-util.h"
27 #include "format-util.h"
30 //#include "parse-util.h"
31 //#include "process-util.h"
32 #include "selinux-util.h"
33 #include "signal-util.h"
35 #include "udev-util.h"
36 /// Additional includes needed by elogind
37 #include "cgroup.h" // From src/core/
40 #include "musl_missing.h"
41 #include "process-util.h"
42 #include "cgroup-util.h"
44 static Manager* manager_unref(Manager *m);
45 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
47 #if 0 /// elogind does not support autospawning of vts
49 static int manager_new(Manager **ret) {
50 _cleanup_(manager_unrefp) Manager *m = NULL;
59 m->console_active_fd = -1;
60 #if 0 /// UNNEEDED by elogind
61 m->reserve_vt_fd = -1;
64 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
66 m->devices = hashmap_new(&string_hash_ops);
67 m->seats = hashmap_new(&string_hash_ops);
68 m->sessions = hashmap_new(&string_hash_ops);
69 m->users = hashmap_new(NULL);
70 m->inhibitors = hashmap_new(&string_hash_ops);
71 m->buttons = hashmap_new(&string_hash_ops);
73 m->user_units = hashmap_new(&string_hash_ops);
74 m->session_units = hashmap_new(&string_hash_ops);
76 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
79 #if 1 /// elogind needs some more data
80 r = elogind_manager_new(m);
88 r = sd_event_default(&m->event);
92 r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
96 r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
100 (void) sd_event_set_watchdog(m->event, true);
102 manager_reset_config(m);
108 static Manager* manager_unref(Manager *m) {
119 while ((session = hashmap_first(m->sessions)))
120 session_free(session);
122 while ((u = hashmap_first(m->users)))
125 while ((d = hashmap_first(m->devices)))
128 while ((s = hashmap_first(m->seats)))
131 while ((i = hashmap_first(m->inhibitors)))
134 while ((b = hashmap_first(m->buttons)))
137 hashmap_free(m->devices);
138 hashmap_free(m->seats);
139 hashmap_free(m->sessions);
140 hashmap_free(m->users);
141 hashmap_free(m->inhibitors);
142 hashmap_free(m->buttons);
144 hashmap_free(m->user_units);
145 hashmap_free(m->session_units);
147 sd_event_source_unref(m->idle_action_event_source);
148 sd_event_source_unref(m->inhibit_timeout_source);
149 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
150 sd_event_source_unref(m->nologin_timeout_source);
151 sd_event_source_unref(m->wall_message_timeout_source);
153 sd_event_source_unref(m->console_active_event_source);
154 sd_event_source_unref(m->udev_seat_event_source);
155 sd_event_source_unref(m->udev_device_event_source);
156 sd_event_source_unref(m->udev_vcsa_event_source);
157 sd_event_source_unref(m->udev_button_event_source);
158 sd_event_source_unref(m->lid_switch_ignore_event_source);
160 safe_close(m->console_active_fd);
162 udev_monitor_unref(m->udev_seat_monitor);
163 udev_monitor_unref(m->udev_device_monitor);
164 udev_monitor_unref(m->udev_vcsa_monitor);
165 udev_monitor_unref(m->udev_button_monitor);
169 if (m->unlink_nologin)
170 (void) unlink_or_warn("/run/nologin");
172 bus_verify_polkit_async_registry_free(m->polkit_registry);
174 sd_bus_unref(m->bus);
175 sd_event_unref(m->event);
177 #if 0 /// elogind does not support autospawning of vts
178 safe_close(m->reserve_vt_fd);
180 #if 1 /// elogind has to free its own data
181 elogind_manager_free(m);
184 strv_free(m->kill_only_users);
185 strv_free(m->kill_exclude_users);
187 free(m->scheduled_shutdown_type);
188 free(m->scheduled_shutdown_tty);
189 free(m->wall_message);
190 #if 0 /// UNNEEDED by elogind
197 static int manager_enumerate_devices(Manager *m) {
198 struct udev_list_entry *item = NULL, *first = NULL;
199 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
204 /* Loads devices from udev and creates seats for them as
207 e = udev_enumerate_new(m->udev);
211 r = udev_enumerate_add_match_tag(e, "master-of-seat");
215 r = udev_enumerate_add_match_is_initialized(e);
219 r = udev_enumerate_scan_devices(e);
223 first = udev_enumerate_get_list_entry(e);
224 udev_list_entry_foreach(item, first) {
225 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
228 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
232 k = manager_process_seat_device(m, d);
240 static int manager_enumerate_buttons(Manager *m) {
241 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
242 struct udev_list_entry *item = NULL, *first = NULL;
247 /* Loads buttons from udev */
249 if (manager_all_buttons_ignored(m))
252 e = udev_enumerate_new(m->udev);
256 r = udev_enumerate_add_match_subsystem(e, "input");
260 r = udev_enumerate_add_match_tag(e, "power-switch");
264 r = udev_enumerate_add_match_is_initialized(e);
268 r = udev_enumerate_scan_devices(e);
272 first = udev_enumerate_get_list_entry(e);
273 udev_list_entry_foreach(item, first) {
274 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
277 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
281 k = manager_process_button_device(m, d);
289 static int manager_enumerate_seats(Manager *m) {
290 _cleanup_closedir_ DIR *d = NULL;
296 /* This loads data about seats stored on disk, but does not
297 * actually create any seats. Removes data of seats that no
300 d = opendir("/run/systemd/seats");
305 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
308 FOREACH_DIRENT(de, d, return -errno) {
312 if (!dirent_is_file(de))
315 s = hashmap_get(m->seats, de->d_name);
317 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
318 log_warning("Failed to remove /run/systemd/seats/%s: %m",
331 static int manager_enumerate_linger_users(Manager *m) {
332 _cleanup_closedir_ DIR *d = NULL;
338 d = opendir("/var/lib/elogind/linger");
343 return log_error_errno(errno, "Failed to open /var/lib/elogind/linger/: %m");
346 FOREACH_DIRENT(de, d, return -errno) {
349 if (!dirent_is_file(de))
352 k = manager_add_user_by_name(m, de->d_name, NULL);
354 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
362 static int manager_enumerate_users(Manager *m) {
363 _cleanup_closedir_ DIR *d = NULL;
369 /* Add lingering users */
370 r = manager_enumerate_linger_users(m);
372 /* Read in user data stored on disk */
373 d = opendir("/run/systemd/users");
378 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
381 FOREACH_DIRENT(de, d, return -errno) {
384 if (!dirent_is_file(de))
387 k = manager_add_user_by_name(m, de->d_name, &u);
389 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
395 user_add_to_gc_queue(u);
405 static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) {
406 _cleanup_strv_free_ char **parts = NULL;
407 _cleanup_free_ char *id = NULL;
408 unsigned int major, minor;
411 parts = strv_split(fdname, "-");
414 if (strv_length(parts) != 5)
417 if (!streq(parts[0], "session"))
420 id = strdup(parts[1]);
424 if (!streq(parts[2], "device"))
427 r = safe_atou(parts[3], &major);
430 r = safe_atou(parts[4], &minor);
434 *dev = makedev(major, minor);
435 *session_id = TAKE_PTR(id);
440 static int manager_attach_fds(Manager *m) {
441 _cleanup_strv_free_ char **fdnames = NULL;
444 /* Upon restart, PID1 will send us back all fds of session devices
445 * that we previously opened. Each file descriptor is associated
446 * with a given session. The session ids are passed through FDNAMES. */
448 n = sd_listen_fds_with_names(true, &fdnames);
452 for (i = 0; i < n; i++) {
453 _cleanup_free_ char *id = NULL;
460 fd = SD_LISTEN_FDS_START + i;
462 r = parse_fdname(fdnames[i], &id, &dev);
464 log_debug_errno(r, "Failed to parse fd name %s: %m", fdnames[i]);
469 s = hashmap_get(m->sessions, id);
471 /* If the session doesn't exist anymore, the associated session
472 * device attached to this fd doesn't either. Let's simply close
474 log_debug("Failed to attach fd for unknown session: %s", id);
479 if (fstat(fd, &st) < 0) {
480 /* The device is allowed to go away at a random point, in which
481 * case fstat failing is expected. */
482 log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id);
487 if (!S_ISCHR(st.st_mode) || st.st_rdev != dev) {
488 log_debug("Device fd doesn't point to the expected character device node");
493 sd = hashmap_get(s->devices, &dev);
495 /* Weird, we got an fd for a session device which wasn't
496 * recorded in the session state file... */
497 log_warning("Got fd for missing session device [%u:%u] in session %s",
498 major(dev), minor(dev), s->id);
503 log_debug("Attaching fd to session device [%u:%u] for session %s",
504 major(dev), minor(dev), s->id);
506 session_device_attach_fd(sd, fd, s->was_active);
512 static int manager_enumerate_sessions(Manager *m) {
513 _cleanup_closedir_ DIR *d = NULL;
519 /* Read in session data stored on disk */
520 d = opendir("/run/systemd/sessions");
525 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
528 FOREACH_DIRENT(de, d, return -errno) {
531 if (!dirent_is_file(de))
534 if (!session_id_valid(de->d_name)) {
535 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
540 k = manager_add_session(m, de->d_name, &s);
542 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
547 session_add_to_gc_queue(s);
554 /* We might be restarted and PID1 could have sent us back the
555 * session device fds we previously saved. */
556 k = manager_attach_fds(m);
558 log_warning_errno(k, "Failed to reattach session device fds: %m");
563 static int manager_enumerate_inhibitors(Manager *m) {
564 _cleanup_closedir_ DIR *d = NULL;
570 d = opendir("/run/systemd/inhibit");
575 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
578 FOREACH_DIRENT(de, d, return -errno) {
582 if (!dirent_is_file(de))
585 k = manager_add_inhibitor(m, de->d_name, &i);
587 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
592 k = inhibitor_load(i);
600 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
601 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
602 Manager *m = userdata;
606 d = udev_monitor_receive_device(m->udev_seat_monitor);
610 manager_process_seat_device(m, d);
614 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
615 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
616 Manager *m = userdata;
620 d = udev_monitor_receive_device(m->udev_device_monitor);
624 manager_process_seat_device(m, d);
628 #if 0 /// UNNEEDED by elogind
629 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
630 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
631 Manager *m = userdata;
636 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
640 name = udev_device_get_sysname(d);
642 /* Whenever a VCSA device is removed try to reallocate our
643 * VTs, to make sure our auto VTs never go away. */
645 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
646 seat_preallocate_vts(m->seat0);
652 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
653 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
654 Manager *m = userdata;
658 d = udev_monitor_receive_device(m->udev_button_monitor);
662 manager_process_button_device(m, d);
666 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
667 Manager *m = userdata;
671 assert(m->console_active_fd == fd);
673 seat_read_active_vt(m->seat0);
677 #if 0 /// UNNEEDED by elogind
678 static int manager_reserve_vt(Manager *m) {
679 _cleanup_free_ char *p = NULL;
683 if (m->reserve_vt <= 0)
686 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
689 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
690 if (m->reserve_vt_fd < 0) {
692 /* Don't complain on VT-less systems */
694 log_warning_errno(errno, "Failed to pin reserved VT: %m");
702 static int manager_connect_bus(Manager *m) {
708 r = sd_bus_default_system(&m->bus);
710 return log_error_errno(r, "Failed to connect to system bus: %m");
712 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
714 return log_error_errno(r, "Failed to add manager object vtable: %m");
716 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
718 return log_error_errno(r, "Failed to add seat object vtable: %m");
720 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
722 return log_error_errno(r, "Failed to add seat enumerator: %m");
724 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
726 return log_error_errno(r, "Failed to add session object vtable: %m");
728 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
730 return log_error_errno(r, "Failed to add session enumerator: %m");
732 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
734 return log_error_errno(r, "Failed to add user object vtable: %m");
736 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
738 return log_error_errno(r, "Failed to add user enumerator: %m");
740 #if 0 /// elogind does not support systemd as PID 1
741 r = sd_bus_match_signal_async(
744 "org.freedesktop.systemd1",
745 "/org/freedesktop/systemd1",
746 "org.freedesktop.systemd1.Manager",
748 match_job_removed, NULL, m);
750 return log_error_errno(r, "Failed to request match for JobRemoved: %m");
752 r = sd_bus_match_signal_async(
755 "org.freedesktop.systemd1",
756 "/org/freedesktop/systemd1",
757 "org.freedesktop.systemd1.Manager",
759 match_unit_removed, NULL, m);
761 return log_error_errno(r, "Failed to request match for UnitRemoved: %m");
763 r = sd_bus_match_signal_async(
766 "org.freedesktop.systemd1",
768 "org.freedesktop.DBus.Properties",
770 match_properties_changed, NULL, m);
772 return log_error_errno(r, "Failed to request match for PropertiesChanged: %m");
774 r = sd_bus_match_signal_async(
777 "org.freedesktop.systemd1",
778 "/org/freedesktop/systemd1",
779 "org.freedesktop.systemd1.Manager",
781 match_reloading, NULL, m);
783 return log_error_errno(r, "Failed to request match for Reloading: %m");
785 r = sd_bus_call_method_async(
788 "org.freedesktop.systemd1",
789 "/org/freedesktop/systemd1",
790 "org.freedesktop.systemd1.Manager",
796 return log_error_errno(r, "Failed to enable subscription: %m");
798 r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.login1", 0, NULL, NULL);
800 return log_error_errno(r, "Failed to request name: %m");
802 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
804 return log_error_errno(r, "Failed to attach bus to event loop: %m");
806 #if 0 /// elogind has to setup its release agent
809 r = elogind_setup_cgroups_agent(m);
815 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
817 Session *active, *iter;
820 * We got a VT-switch signal and we have to acknowledge it immediately.
821 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
822 * old user-space might run multiple sessions on a single VT, *sigh*.
823 * Therefore, we have to iterate all sessions and find one with a vtfd
824 * on the requested VT.
825 * As only VTs with active controllers have VT_PROCESS set, our current
826 * notion of the active VT might be wrong (for instance if the switch
827 * happens while we setup VT_PROCESS). Therefore, read the current VT
828 * first and then use s->active->vtnr as reference. Note that this is
829 * not racy, as no further VT-switch can happen as long as we're in
830 * synchronous VT_PROCESS mode.
834 seat_read_active_vt(m->seat0);
836 active = m->seat0->active;
837 if (!active || active->vtnr < 1) {
838 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
842 if (active->vtfd >= 0) {
843 session_leave_vt(active);
845 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
846 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
847 session_leave_vt(iter);
856 static int manager_connect_console(Manager *m) {
860 assert(m->console_active_fd < 0);
862 /* On certain architectures (S390 and Xen, and containers),
863 /dev/tty0 does not exist, so don't fail if we can't open
865 if (access("/dev/tty0", F_OK) < 0)
868 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
869 if (m->console_active_fd < 0) {
871 /* On some systems the device node /dev/tty0 may exist
872 * even though /sys/class/tty/tty0 does not. */
876 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
879 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
881 log_error("Failed to watch foreground console");
886 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
887 * as VT-acquire signal. We ignore any acquire-events (yes, we still
888 * have to provide a valid signal-number for it!) and acknowledge all
889 * release events immediately.
892 if (SIGRTMIN + 1 > SIGRTMAX) {
893 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
897 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
898 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
900 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
907 static int manager_connect_udev(Manager *m) {
911 assert(!m->udev_seat_monitor);
912 assert(!m->udev_device_monitor);
913 assert(!m->udev_vcsa_monitor);
914 assert(!m->udev_button_monitor);
916 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
917 if (!m->udev_seat_monitor)
920 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
924 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
928 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);
932 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
933 if (!m->udev_device_monitor)
936 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
940 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
944 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
948 r = udev_monitor_enable_receiving(m->udev_device_monitor);
952 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);
956 /* Don't watch keys if nobody cares */
957 if (!manager_all_buttons_ignored(m)) {
958 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
959 if (!m->udev_button_monitor)
962 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
966 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
970 r = udev_monitor_enable_receiving(m->udev_button_monitor);
974 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);
979 /* Don't bother watching VCSA devices, if nobody cares */
980 #if 0 /// elogind does not support autospawning of vts
981 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
983 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
984 if (!m->udev_vcsa_monitor)
987 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
991 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
995 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);
1004 static void manager_gc(Manager *m, bool drop_not_started) {
1011 while ((seat = m->seat_gc_queue)) {
1012 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
1013 seat->in_gc_queue = false;
1015 if (seat_may_gc(seat, drop_not_started)) {
1016 seat_stop(seat, false);
1021 while ((session = m->session_gc_queue)) {
1022 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
1023 session->in_gc_queue = false;
1025 /* First, if we are not closing yet, initiate stopping */
1026 if (session_may_gc(session, drop_not_started) &&
1027 session_get_state(session) != SESSION_CLOSING)
1028 session_stop(session, false);
1030 /* Normally, this should make the session referenced
1031 * again, if it doesn't then let's get rid of it
1033 if (session_may_gc(session, drop_not_started)) {
1034 session_finalize(session);
1035 session_free(session);
1039 while ((user = m->user_gc_queue)) {
1040 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1041 user->in_gc_queue = false;
1043 /* First step: queue stop jobs */
1044 if (user_may_gc(user, drop_not_started))
1045 user_stop(user, false);
1047 /* Second step: finalize user */
1048 if (user_may_gc(user, drop_not_started)) {
1049 user_finalize(user);
1055 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1056 Manager *m = userdata;
1057 struct dual_timestamp since;
1063 if (m->idle_action == HANDLE_IGNORE ||
1064 m->idle_action_usec <= 0)
1067 n = now(CLOCK_MONOTONIC);
1069 r = manager_get_idle_hint(m, &since);
1071 /* Not idle. Let's check if after a timeout it might be idle then. */
1072 elapse = n + m->idle_action_usec;
1074 /* Idle! Let's see if it's time to do something, or if
1075 * we shall sleep for longer. */
1077 if (n >= since.monotonic + m->idle_action_usec &&
1078 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1079 log_info("System idle. Taking action.");
1081 manager_handle_action(m, 0, m->idle_action, false, false);
1082 m->idle_action_not_before_usec = n;
1085 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1088 if (!m->idle_action_event_source) {
1090 r = sd_event_add_time(
1092 &m->idle_action_event_source,
1094 elapse, USEC_PER_SEC*30,
1095 manager_dispatch_idle_action, m);
1097 return log_error_errno(r, "Failed to add idle event source: %m");
1099 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1101 return log_error_errno(r, "Failed to set idle event source priority: %m");
1103 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1105 return log_error_errno(r, "Failed to set idle event timer: %m");
1107 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1109 return log_error_errno(r, "Failed to enable idle event timer: %m");
1115 #if 0 /// elogind parses its own config file
1117 const char* logind_conf = getenv("ELOGIND_CONF_FILE");
1122 logind_conf = PKGSYSCONFDIR "/logind.conf";
1124 return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
1125 config_item_perf_lookup, logind_gperf_lookup,
1127 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1128 Manager *m = userdata;
1131 manager_reset_config(m);
1132 r = manager_parse_config_file(m);
1134 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1136 log_info("Config file reloaded.");
1138 #if 1 /// elogind needs an Add-On for sleep configuration
1139 elogind_manager_reset_config(m);
1144 static int manager_startup(Manager *m) {
1150 Inhibitor *inhibitor;
1155 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1157 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1159 #if 1 /// elogind needs some extra preparations before connecting...
1160 elogind_manager_startup(m);
1162 /* Connect to console */
1163 r = manager_connect_console(m);
1167 /* Connect to udev */
1168 r = manager_connect_udev(m);
1170 return log_error_errno(r, "Failed to create udev watchers: %m");
1172 /* Connect to the bus */
1173 r = manager_connect_bus(m);
1177 /* Instantiate magic seat 0 */
1178 r = manager_add_seat(m, "seat0", &m->seat0);
1180 return log_error_errno(r, "Failed to add seat0: %m");
1182 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1184 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1186 /* Deserialize state */
1187 r = manager_enumerate_devices(m);
1189 log_warning_errno(r, "Device enumeration failed: %m");
1191 r = manager_enumerate_seats(m);
1193 log_warning_errno(r, "Seat enumeration failed: %m");
1195 r = manager_enumerate_users(m);
1197 log_warning_errno(r, "User enumeration failed: %m");
1199 r = manager_enumerate_sessions(m);
1201 log_warning_errno(r, "Session enumeration failed: %m");
1203 r = manager_enumerate_inhibitors(m);
1205 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1207 r = manager_enumerate_buttons(m);
1209 log_warning_errno(r, "Button enumeration failed: %m");
1211 /* Remove stale objects before we start them */
1212 manager_gc(m, false);
1214 /* Reserve the special reserved VT */
1215 #if 0 /// elogind does not support autospawning of vts
1216 manager_reserve_vt(m);
1219 /* And start everything */
1220 HASHMAP_FOREACH(seat, m->seats, i)
1223 HASHMAP_FOREACH(user, m->users, i)
1226 HASHMAP_FOREACH(session, m->sessions, i)
1227 session_start(session, NULL);
1229 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1230 inhibitor_start(inhibitor);
1232 HASHMAP_FOREACH(button, m->buttons, i)
1233 button_check_switches(button);
1235 manager_dispatch_idle_action(NULL, 0, m);
1240 static int manager_run(Manager *m) {
1246 r = sd_event_get_state(m->event);
1249 if (r == SD_EVENT_FINISHED)
1252 manager_gc(m, true);
1254 r = manager_dispatch_delayed(m, false);
1260 r = sd_event_run(m->event, (uint64_t) -1);
1266 int main(int argc, char *argv[]) {
1267 _cleanup_(manager_unrefp) Manager *m = NULL;
1270 #if 1 /// perform extra checks for elogind startup
1271 r = elogind_startup(argc, argv);
1273 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1275 elogind_set_program_name(argv[0]);
1276 log_set_target(LOG_TARGET_AUTO);
1277 log_set_facility(LOG_AUTH);
1278 log_parse_environment();
1279 #if ENABLE_DEBUG_ELOGIND
1280 log_set_max_level(LOG_DEBUG);
1281 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1282 #endif // ENABLE_DEBUG_ELOGIND
1287 #if 0 /// elogind has some extra functionality at startup, argc can be != 1
1289 log_error("This program takes no arguments.");
1295 r = mac_selinux_init();
1297 log_error_errno(r, "Could not initialize labelling: %m");
1301 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1302 mkdir_label("/run/systemd/seats", 0755);
1303 mkdir_label("/run/systemd/users", 0755);
1304 mkdir_label("/run/systemd/sessions", 0755);
1305 /* Always create the directories people can create inotify watches in. Note that some applications might check
1306 * for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
1307 * sure these directories are created early on and unconditionally. */
1308 (void) mkdir_label("/run/systemd/seats", 0755);
1309 (void) mkdir_label("/run/systemd/users", 0755);
1310 (void) mkdir_label("/run/systemd/sessions", 0755);
1312 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, -1) >= 0);
1314 r = manager_new(&m);
1316 log_error_errno(r, "Failed to allocate manager object: %m");
1318 r = mkdir_label("/run/systemd", 0755);
1319 if ( (r < 0) && (-EEXIST != r) )
1320 return log_error_errno(r, "Failed to create /run/systemd : %m");
1321 r = mkdir_label("/run/systemd/seats", 0755);
1322 if ( r < 0 && (-EEXIST != r) )
1323 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1324 r = mkdir_label("/run/systemd/users", 0755);
1325 if ( r < 0 && (-EEXIST != r) )
1326 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1327 r = mkdir_label("/run/systemd/sessions", 0755);
1328 if ( r < 0 && (-EEXIST != r) )
1329 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1330 r = mkdir_label("/run/systemd/machines", 0755);
1331 if ( r < 0 && (-EEXIST != r) )
1332 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1337 (void) manager_parse_config_file(m);
1339 #if 1 /// elogind needs an Add-On for sleep configuration
1340 elogind_manager_reset_config(m);
1342 r = manager_startup(m);
1344 log_error_errno(r, "Failed to fully start up daemon: %m");
1348 log_debug("elogind running as pid "PID_FMT, getpid_cached());
1350 (void) sd_notify(false,
1352 "STATUS=Processing requests...");
1356 log_debug("elogind stopped as pid "PID_FMT, getpid_cached());
1358 (void) sd_notify(false,
1360 "STATUS=Shutting down...");
1363 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;