1 /* SPDX-License-Identifier: LGPL-2.1+ */
8 #if 0 /// elogind needs the systems udev header
13 #include "sd-daemon.h"
15 #include "alloc-util.h"
16 #include "bus-error.h"
18 //#include "cgroup-util.h"
20 #include "dirent-util.h"
22 #include "format-util.h"
25 #include "parse-util.h"
26 //#include "process-util.h"
27 #include "selinux-util.h"
28 #include "signal-util.h"
30 #include "udev-util.h"
31 /// Additional includes needed by elogind
32 #include "cgroup.h" // From src/core/
35 #include "musl_missing.h"
36 #include "process-util.h"
37 #include "cgroup-util.h"
39 static Manager* manager_unref(Manager *m);
40 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
42 #if 0 /// elogind does not support autospawning of vts
44 static int manager_new(Manager **ret) {
45 _cleanup_(manager_unrefp) Manager *m = NULL;
54 m->console_active_fd = -1;
55 #if 0 /// UNNEEDED by elogind
56 m->reserve_vt_fd = -1;
59 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
61 m->devices = hashmap_new(&string_hash_ops);
62 m->seats = hashmap_new(&string_hash_ops);
63 m->sessions = hashmap_new(&string_hash_ops);
64 m->users = hashmap_new(NULL);
65 m->inhibitors = hashmap_new(&string_hash_ops);
66 m->buttons = hashmap_new(&string_hash_ops);
68 m->user_units = hashmap_new(&string_hash_ops);
69 m->session_units = hashmap_new(&string_hash_ops);
71 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
74 #if 1 /// elogind needs some more data
75 r = elogind_manager_new(m);
83 r = sd_event_default(&m->event);
87 r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
91 r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
95 (void) sd_event_set_watchdog(m->event, true);
97 manager_reset_config(m);
103 static Manager* manager_unref(Manager *m) {
114 while ((session = hashmap_first(m->sessions)))
115 session_free(session);
117 while ((u = hashmap_first(m->users)))
120 while ((d = hashmap_first(m->devices)))
123 while ((s = hashmap_first(m->seats)))
126 while ((i = hashmap_first(m->inhibitors)))
129 while ((b = hashmap_first(m->buttons)))
132 hashmap_free(m->devices);
133 hashmap_free(m->seats);
134 hashmap_free(m->sessions);
135 hashmap_free(m->users);
136 hashmap_free(m->inhibitors);
137 hashmap_free(m->buttons);
139 hashmap_free(m->user_units);
140 hashmap_free(m->session_units);
142 sd_event_source_unref(m->idle_action_event_source);
143 sd_event_source_unref(m->inhibit_timeout_source);
144 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
145 sd_event_source_unref(m->nologin_timeout_source);
146 sd_event_source_unref(m->wall_message_timeout_source);
148 sd_event_source_unref(m->console_active_event_source);
149 sd_event_source_unref(m->udev_seat_event_source);
150 sd_event_source_unref(m->udev_device_event_source);
151 sd_event_source_unref(m->udev_vcsa_event_source);
152 sd_event_source_unref(m->udev_button_event_source);
153 sd_event_source_unref(m->lid_switch_ignore_event_source);
155 safe_close(m->console_active_fd);
157 udev_monitor_unref(m->udev_seat_monitor);
158 udev_monitor_unref(m->udev_device_monitor);
159 udev_monitor_unref(m->udev_vcsa_monitor);
160 udev_monitor_unref(m->udev_button_monitor);
164 if (m->unlink_nologin)
165 (void) unlink_or_warn("/run/nologin");
167 bus_verify_polkit_async_registry_free(m->polkit_registry);
169 sd_bus_unref(m->bus);
170 sd_event_unref(m->event);
172 #if 0 /// elogind does not support autospawning of vts
173 safe_close(m->reserve_vt_fd);
175 #if 1 /// elogind has to free its own data
176 elogind_manager_free(m);
179 strv_free(m->kill_only_users);
180 strv_free(m->kill_exclude_users);
182 free(m->scheduled_shutdown_type);
183 free(m->scheduled_shutdown_tty);
184 free(m->wall_message);
185 #if 0 /// UNNEEDED by elogind
192 static int manager_enumerate_devices(Manager *m) {
193 struct udev_list_entry *item = NULL, *first = NULL;
194 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
199 /* Loads devices from udev and creates seats for them as
202 e = udev_enumerate_new(m->udev);
206 r = udev_enumerate_add_match_tag(e, "master-of-seat");
210 r = udev_enumerate_add_match_is_initialized(e);
214 r = udev_enumerate_scan_devices(e);
218 first = udev_enumerate_get_list_entry(e);
219 udev_list_entry_foreach(item, first) {
220 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
223 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
227 k = manager_process_seat_device(m, d);
235 static int manager_enumerate_buttons(Manager *m) {
236 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
237 struct udev_list_entry *item = NULL, *first = NULL;
242 /* Loads buttons from udev */
244 if (manager_all_buttons_ignored(m))
247 e = udev_enumerate_new(m->udev);
251 r = udev_enumerate_add_match_subsystem(e, "input");
255 r = udev_enumerate_add_match_tag(e, "power-switch");
259 r = udev_enumerate_add_match_is_initialized(e);
263 r = udev_enumerate_scan_devices(e);
267 first = udev_enumerate_get_list_entry(e);
268 udev_list_entry_foreach(item, first) {
269 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
272 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
276 k = manager_process_button_device(m, d);
284 static int manager_enumerate_seats(Manager *m) {
285 _cleanup_closedir_ DIR *d = NULL;
291 /* This loads data about seats stored on disk, but does not
292 * actually create any seats. Removes data of seats that no
295 d = opendir("/run/systemd/seats");
300 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
303 FOREACH_DIRENT(de, d, return -errno) {
307 if (!dirent_is_file(de))
310 s = hashmap_get(m->seats, de->d_name);
312 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
313 log_warning("Failed to remove /run/systemd/seats/%s: %m",
326 static int manager_enumerate_linger_users(Manager *m) {
327 _cleanup_closedir_ DIR *d = NULL;
333 d = opendir("/var/lib/elogind/linger");
338 return log_error_errno(errno, "Failed to open /var/lib/elogind/linger/: %m");
341 FOREACH_DIRENT(de, d, return -errno) {
344 if (!dirent_is_file(de))
347 k = manager_add_user_by_name(m, de->d_name, NULL);
349 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
357 static int manager_enumerate_users(Manager *m) {
358 _cleanup_closedir_ DIR *d = NULL;
364 /* Add lingering users */
365 r = manager_enumerate_linger_users(m);
367 /* Read in user data stored on disk */
368 d = opendir("/run/systemd/users");
373 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
376 FOREACH_DIRENT(de, d, return -errno) {
379 if (!dirent_is_file(de))
382 k = manager_add_user_by_name(m, de->d_name, &u);
384 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
390 user_add_to_gc_queue(u);
400 static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) {
401 _cleanup_strv_free_ char **parts = NULL;
402 _cleanup_free_ char *id = NULL;
403 unsigned int major, minor;
406 parts = strv_split(fdname, "-");
409 if (strv_length(parts) != 5)
412 if (!streq(parts[0], "session"))
415 id = strdup(parts[1]);
419 if (!streq(parts[2], "device"))
422 r = safe_atou(parts[3], &major);
425 r = safe_atou(parts[4], &minor);
429 *dev = makedev(major, minor);
430 *session_id = TAKE_PTR(id);
435 static int manager_attach_fds(Manager *m) {
436 _cleanup_strv_free_ char **fdnames = NULL;
439 /* Upon restart, PID1 will send us back all fds of session devices
440 * that we previously opened. Each file descriptor is associated
441 * with a given session. The session ids are passed through FDNAMES. */
443 n = sd_listen_fds_with_names(true, &fdnames);
447 for (i = 0; i < n; i++) {
448 _cleanup_free_ char *id = NULL;
455 fd = SD_LISTEN_FDS_START + i;
457 r = parse_fdname(fdnames[i], &id, &dev);
459 log_debug_errno(r, "Failed to parse fd name %s: %m", fdnames[i]);
464 s = hashmap_get(m->sessions, id);
466 /* If the session doesn't exist anymore, the associated session
467 * device attached to this fd doesn't either. Let's simply close
469 log_debug("Failed to attach fd for unknown session: %s", id);
474 if (fstat(fd, &st) < 0) {
475 /* The device is allowed to go away at a random point, in which
476 * case fstat failing is expected. */
477 log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id);
482 if (!S_ISCHR(st.st_mode) || st.st_rdev != dev) {
483 log_debug("Device fd doesn't point to the expected character device node");
488 sd = hashmap_get(s->devices, &dev);
490 /* Weird, we got an fd for a session device which wasn't
491 * recorded in the session state file... */
492 log_warning("Got fd for missing session device [%u:%u] in session %s",
493 major(dev), minor(dev), s->id);
498 log_debug("Attaching fd to session device [%u:%u] for session %s",
499 major(dev), minor(dev), s->id);
501 session_device_attach_fd(sd, fd, s->was_active);
507 static int manager_enumerate_sessions(Manager *m) {
508 _cleanup_closedir_ DIR *d = NULL;
514 /* Read in session data stored on disk */
515 d = opendir("/run/systemd/sessions");
520 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
523 FOREACH_DIRENT(de, d, return -errno) {
526 if (!dirent_is_file(de))
529 if (!session_id_valid(de->d_name)) {
530 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
535 k = manager_add_session(m, de->d_name, &s);
537 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
542 session_add_to_gc_queue(s);
549 /* We might be restarted and PID1 could have sent us back the
550 * session device fds we previously saved. */
551 k = manager_attach_fds(m);
553 log_warning_errno(k, "Failed to reattach session device fds: %m");
558 static int manager_enumerate_inhibitors(Manager *m) {
559 _cleanup_closedir_ DIR *d = NULL;
565 d = opendir("/run/systemd/inhibit");
570 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
573 FOREACH_DIRENT(de, d, return -errno) {
577 if (!dirent_is_file(de))
580 k = manager_add_inhibitor(m, de->d_name, &i);
582 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
587 k = inhibitor_load(i);
595 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
596 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
597 Manager *m = userdata;
601 d = udev_monitor_receive_device(m->udev_seat_monitor);
605 manager_process_seat_device(m, d);
609 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
610 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
611 Manager *m = userdata;
615 d = udev_monitor_receive_device(m->udev_device_monitor);
619 manager_process_seat_device(m, d);
623 #if 0 /// UNNEEDED by elogind
624 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
625 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
626 Manager *m = userdata;
631 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
635 name = udev_device_get_sysname(d);
637 /* Whenever a VCSA device is removed try to reallocate our
638 * VTs, to make sure our auto VTs never go away. */
640 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
641 seat_preallocate_vts(m->seat0);
647 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
648 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
649 Manager *m = userdata;
653 d = udev_monitor_receive_device(m->udev_button_monitor);
657 manager_process_button_device(m, d);
661 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
662 Manager *m = userdata;
666 assert(m->console_active_fd == fd);
668 seat_read_active_vt(m->seat0);
672 #if 0 /// UNNEEDED by elogind
673 static int manager_reserve_vt(Manager *m) {
674 _cleanup_free_ char *p = NULL;
678 if (m->reserve_vt <= 0)
681 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
684 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
685 if (m->reserve_vt_fd < 0) {
687 /* Don't complain on VT-less systems */
689 log_warning_errno(errno, "Failed to pin reserved VT: %m");
697 static int manager_connect_bus(Manager *m) {
703 r = sd_bus_default_system(&m->bus);
705 return log_error_errno(r, "Failed to connect to system bus: %m");
707 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
709 return log_error_errno(r, "Failed to add manager object vtable: %m");
711 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
713 return log_error_errno(r, "Failed to add seat object vtable: %m");
715 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
717 return log_error_errno(r, "Failed to add seat enumerator: %m");
719 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
721 return log_error_errno(r, "Failed to add session object vtable: %m");
723 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
725 return log_error_errno(r, "Failed to add session enumerator: %m");
727 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
729 return log_error_errno(r, "Failed to add user object vtable: %m");
731 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
733 return log_error_errno(r, "Failed to add user enumerator: %m");
735 #if 0 /// elogind does not support systemd as PID 1
736 r = sd_bus_match_signal_async(
739 "org.freedesktop.systemd1",
740 "/org/freedesktop/systemd1",
741 "org.freedesktop.systemd1.Manager",
743 match_job_removed, NULL, m);
745 return log_error_errno(r, "Failed to request match for JobRemoved: %m");
747 r = sd_bus_match_signal_async(
750 "org.freedesktop.systemd1",
751 "/org/freedesktop/systemd1",
752 "org.freedesktop.systemd1.Manager",
754 match_unit_removed, NULL, m);
756 return log_error_errno(r, "Failed to request match for UnitRemoved: %m");
758 r = sd_bus_match_signal_async(
761 "org.freedesktop.systemd1",
763 "org.freedesktop.DBus.Properties",
765 match_properties_changed, NULL, m);
767 return log_error_errno(r, "Failed to request match for PropertiesChanged: %m");
769 r = sd_bus_match_signal_async(
772 "org.freedesktop.systemd1",
773 "/org/freedesktop/systemd1",
774 "org.freedesktop.systemd1.Manager",
776 match_reloading, NULL, m);
778 return log_error_errno(r, "Failed to request match for Reloading: %m");
780 r = sd_bus_call_method_async(
783 "org.freedesktop.systemd1",
784 "/org/freedesktop/systemd1",
785 "org.freedesktop.systemd1.Manager",
791 return log_error_errno(r, "Failed to enable subscription: %m");
793 r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.login1", 0, NULL, NULL);
795 return log_error_errno(r, "Failed to request name: %m");
797 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
799 return log_error_errno(r, "Failed to attach bus to event loop: %m");
801 #if 0 /// elogind has to setup its release agent
804 r = elogind_setup_cgroups_agent(m);
810 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
812 Session *active, *iter;
815 * We got a VT-switch signal and we have to acknowledge it immediately.
816 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
817 * old user-space might run multiple sessions on a single VT, *sigh*.
818 * Therefore, we have to iterate all sessions and find one with a vtfd
819 * on the requested VT.
820 * As only VTs with active controllers have VT_PROCESS set, our current
821 * notion of the active VT might be wrong (for instance if the switch
822 * happens while we setup VT_PROCESS). Therefore, read the current VT
823 * first and then use s->active->vtnr as reference. Note that this is
824 * not racy, as no further VT-switch can happen as long as we're in
825 * synchronous VT_PROCESS mode.
829 seat_read_active_vt(m->seat0);
831 active = m->seat0->active;
832 if (!active || active->vtnr < 1) {
833 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
837 if (active->vtfd >= 0) {
838 session_leave_vt(active);
840 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
841 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
842 session_leave_vt(iter);
851 static int manager_connect_console(Manager *m) {
855 assert(m->console_active_fd < 0);
857 /* On certain architectures (S390 and Xen, and containers),
858 /dev/tty0 does not exist, so don't fail if we can't open
860 if (access("/dev/tty0", F_OK) < 0)
863 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
864 if (m->console_active_fd < 0) {
866 /* On some systems the device node /dev/tty0 may exist
867 * even though /sys/class/tty/tty0 does not. */
871 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
874 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
876 log_error("Failed to watch foreground console");
881 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
882 * as VT-acquire signal. We ignore any acquire-events (yes, we still
883 * have to provide a valid signal-number for it!) and acknowledge all
884 * release events immediately.
887 if (SIGRTMIN + 1 > SIGRTMAX) {
888 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
892 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
893 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
895 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
902 static int manager_connect_udev(Manager *m) {
906 assert(!m->udev_seat_monitor);
907 assert(!m->udev_device_monitor);
908 assert(!m->udev_vcsa_monitor);
909 assert(!m->udev_button_monitor);
911 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
912 if (!m->udev_seat_monitor)
915 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
919 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
923 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);
927 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
928 if (!m->udev_device_monitor)
931 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
935 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
939 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
943 r = udev_monitor_enable_receiving(m->udev_device_monitor);
947 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);
951 /* Don't watch keys if nobody cares */
952 if (!manager_all_buttons_ignored(m)) {
953 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
954 if (!m->udev_button_monitor)
957 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
961 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
965 r = udev_monitor_enable_receiving(m->udev_button_monitor);
969 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);
974 /* Don't bother watching VCSA devices, if nobody cares */
975 #if 0 /// elogind does not support autospawning of vts
976 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
978 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
979 if (!m->udev_vcsa_monitor)
982 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
986 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
990 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);
999 static void manager_gc(Manager *m, bool drop_not_started) {
1006 while ((seat = m->seat_gc_queue)) {
1007 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
1008 seat->in_gc_queue = false;
1010 if (seat_may_gc(seat, drop_not_started)) {
1011 seat_stop(seat, false);
1016 while ((session = m->session_gc_queue)) {
1017 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
1018 session->in_gc_queue = false;
1020 /* First, if we are not closing yet, initiate stopping */
1021 if (session_may_gc(session, drop_not_started) &&
1022 session_get_state(session) != SESSION_CLOSING)
1023 session_stop(session, false);
1025 /* Normally, this should make the session referenced
1026 * again, if it doesn't then let's get rid of it
1028 if (session_may_gc(session, drop_not_started)) {
1029 session_finalize(session);
1030 session_free(session);
1034 while ((user = m->user_gc_queue)) {
1035 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1036 user->in_gc_queue = false;
1038 /* First step: queue stop jobs */
1039 if (user_may_gc(user, drop_not_started))
1040 user_stop(user, false);
1042 /* Second step: finalize user */
1043 if (user_may_gc(user, drop_not_started)) {
1044 user_finalize(user);
1050 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1051 Manager *m = userdata;
1052 struct dual_timestamp since;
1058 if (m->idle_action == HANDLE_IGNORE ||
1059 m->idle_action_usec <= 0)
1062 n = now(CLOCK_MONOTONIC);
1064 r = manager_get_idle_hint(m, &since);
1066 /* Not idle. Let's check if after a timeout it might be idle then. */
1067 elapse = n + m->idle_action_usec;
1069 /* Idle! Let's see if it's time to do something, or if
1070 * we shall sleep for longer. */
1072 if (n >= since.monotonic + m->idle_action_usec &&
1073 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1074 log_info("System idle. Taking action.");
1076 manager_handle_action(m, 0, m->idle_action, false, false);
1077 m->idle_action_not_before_usec = n;
1080 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1083 if (!m->idle_action_event_source) {
1085 r = sd_event_add_time(
1087 &m->idle_action_event_source,
1089 elapse, USEC_PER_SEC*30,
1090 manager_dispatch_idle_action, m);
1092 return log_error_errno(r, "Failed to add idle event source: %m");
1094 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1096 return log_error_errno(r, "Failed to set idle event source priority: %m");
1098 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1100 return log_error_errno(r, "Failed to set idle event timer: %m");
1102 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1104 return log_error_errno(r, "Failed to enable idle event timer: %m");
1110 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1111 Manager *m = userdata;
1114 manager_reset_config(m);
1115 r = manager_parse_config_file(m);
1117 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1119 log_info("Config file reloaded.");
1121 #if 1 /// elogind needs an Add-On for sleep configuration
1122 elogind_manager_reset_config(m);
1127 static int manager_startup(Manager *m) {
1133 Inhibitor *inhibitor;
1138 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1140 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1142 #if 1 /// elogind needs some extra preparations before connecting...
1143 elogind_manager_startup(m);
1145 /* Connect to console */
1146 r = manager_connect_console(m);
1150 /* Connect to udev */
1151 r = manager_connect_udev(m);
1153 return log_error_errno(r, "Failed to create udev watchers: %m");
1155 /* Connect to the bus */
1156 r = manager_connect_bus(m);
1160 /* Instantiate magic seat 0 */
1161 r = manager_add_seat(m, "seat0", &m->seat0);
1163 return log_error_errno(r, "Failed to add seat0: %m");
1165 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1167 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1169 /* Deserialize state */
1170 r = manager_enumerate_devices(m);
1172 log_warning_errno(r, "Device enumeration failed: %m");
1174 r = manager_enumerate_seats(m);
1176 log_warning_errno(r, "Seat enumeration failed: %m");
1178 r = manager_enumerate_users(m);
1180 log_warning_errno(r, "User enumeration failed: %m");
1182 r = manager_enumerate_sessions(m);
1184 log_warning_errno(r, "Session enumeration failed: %m");
1186 r = manager_enumerate_inhibitors(m);
1188 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1190 r = manager_enumerate_buttons(m);
1192 log_warning_errno(r, "Button enumeration failed: %m");
1194 /* Remove stale objects before we start them */
1195 manager_gc(m, false);
1197 /* Reserve the special reserved VT */
1198 #if 0 /// elogind does not support autospawning of vts
1199 manager_reserve_vt(m);
1202 /* And start everything */
1203 HASHMAP_FOREACH(seat, m->seats, i)
1206 HASHMAP_FOREACH(user, m->users, i)
1209 HASHMAP_FOREACH(session, m->sessions, i)
1210 session_start(session, NULL);
1212 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1213 inhibitor_start(inhibitor);
1215 HASHMAP_FOREACH(button, m->buttons, i)
1216 button_check_switches(button);
1218 manager_dispatch_idle_action(NULL, 0, m);
1223 static int manager_run(Manager *m) {
1229 r = sd_event_get_state(m->event);
1232 if (r == SD_EVENT_FINISHED)
1235 manager_gc(m, true);
1237 r = manager_dispatch_delayed(m, false);
1243 r = sd_event_run(m->event, (uint64_t) -1);
1249 int main(int argc, char *argv[]) {
1250 _cleanup_(manager_unrefp) Manager *m = NULL;
1253 #if 1 /// perform extra checks for elogind startup
1254 r = elogind_startup(argc, argv);
1256 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1258 elogind_set_program_name(argv[0]);
1259 log_set_target(LOG_TARGET_AUTO);
1260 log_set_facility(LOG_AUTH);
1261 log_parse_environment();
1262 #if ENABLE_DEBUG_ELOGIND
1263 log_set_max_level(LOG_DEBUG);
1264 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1265 #endif // ENABLE_DEBUG_ELOGIND
1270 #if 0 /// elogind has some extra functionality at startup, argc can be != 1
1272 log_error("This program takes no arguments.");
1278 r = mac_selinux_init();
1280 log_error_errno(r, "Could not initialize labelling: %m");
1284 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1285 mkdir_label("/run/systemd/seats", 0755);
1286 mkdir_label("/run/systemd/users", 0755);
1287 mkdir_label("/run/systemd/sessions", 0755);
1288 /* Always create the directories people can create inotify watches in. Note that some applications might check
1289 * for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
1290 * sure these directories are created early on and unconditionally. */
1291 (void) mkdir_label("/run/systemd/seats", 0755);
1292 (void) mkdir_label("/run/systemd/users", 0755);
1293 (void) mkdir_label("/run/systemd/sessions", 0755);
1295 r = mkdir_label("/run/systemd", 0755);
1296 if ( (r < 0) && (-EEXIST != r) )
1297 return log_error_errno(r, "Failed to create /run/systemd : %m");
1298 r = mkdir_label("/run/systemd/seats", 0755);
1299 if ( r < 0 && (-EEXIST != r) )
1300 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1301 r = mkdir_label("/run/systemd/users", 0755);
1302 if ( r < 0 && (-EEXIST != r) )
1303 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1304 r = mkdir_label("/run/systemd/sessions", 0755);
1305 if ( r < 0 && (-EEXIST != r) )
1306 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1307 r = mkdir_label("/run/systemd/machines", 0755);
1308 if ( r < 0 && (-EEXIST != r) )
1309 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
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");
1320 (void) manager_parse_config_file(m);
1322 #if 1 /// elogind needs an Add-On for sleep configuration
1323 elogind_manager_reset_config(m);
1325 r = manager_startup(m);
1327 log_error_errno(r, "Failed to fully start up daemon: %m");
1331 log_debug("elogind running as pid "PID_FMT, getpid_cached());
1333 (void) sd_notify(false,
1335 "STATUS=Processing requests...");
1339 log_debug("elogind stopped as pid "PID_FMT, getpid_cached());
1341 (void) sd_notify(false,
1343 "STATUS=Shutting down...");
1346 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;