1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 Copyright 2011 Lennart Poettering
11 #if 0 /// elogind needs the systems udev header
16 #include "sd-daemon.h"
18 #include "alloc-util.h"
19 #include "bus-error.h"
21 //#include "cgroup-util.h"
23 #include "dirent-util.h"
25 #include "format-util.h"
28 //#include "parse-util.h"
29 //#include "process-util.h"
30 #include "selinux-util.h"
31 #include "signal-util.h"
33 #include "udev-util.h"
34 /// Additional includes needed by elogind
35 #include "cgroup.h" // From src/core/
38 #include "musl_missing.h"
39 #include "process-util.h"
40 #include "cgroup-util.h"
42 static Manager* manager_unref(Manager *m);
43 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
45 #if 0 /// elogind does not support autospawning of vts
47 static int manager_new(Manager **ret) {
48 _cleanup_(manager_unrefp) Manager *m = NULL;
57 m->console_active_fd = -1;
58 #if 0 /// UNNEEDED by elogind
59 m->reserve_vt_fd = -1;
62 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
64 m->devices = hashmap_new(&string_hash_ops);
65 m->seats = hashmap_new(&string_hash_ops);
66 m->sessions = hashmap_new(&string_hash_ops);
67 m->users = hashmap_new(NULL);
68 m->inhibitors = hashmap_new(&string_hash_ops);
69 m->buttons = hashmap_new(&string_hash_ops);
71 m->user_units = hashmap_new(&string_hash_ops);
72 m->session_units = hashmap_new(&string_hash_ops);
74 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
77 #if 1 /// elogind needs some more data
78 r = elogind_manager_new(m);
86 r = sd_event_default(&m->event);
90 r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
94 r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
98 (void) sd_event_set_watchdog(m->event, true);
100 manager_reset_config(m);
106 static Manager* manager_unref(Manager *m) {
117 while ((session = hashmap_first(m->sessions)))
118 session_free(session);
120 while ((u = hashmap_first(m->users)))
123 while ((d = hashmap_first(m->devices)))
126 while ((s = hashmap_first(m->seats)))
129 while ((i = hashmap_first(m->inhibitors)))
132 while ((b = hashmap_first(m->buttons)))
135 hashmap_free(m->devices);
136 hashmap_free(m->seats);
137 hashmap_free(m->sessions);
138 hashmap_free(m->users);
139 hashmap_free(m->inhibitors);
140 hashmap_free(m->buttons);
142 hashmap_free(m->user_units);
143 hashmap_free(m->session_units);
145 sd_event_source_unref(m->idle_action_event_source);
146 sd_event_source_unref(m->inhibit_timeout_source);
147 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
148 sd_event_source_unref(m->nologin_timeout_source);
149 sd_event_source_unref(m->wall_message_timeout_source);
151 sd_event_source_unref(m->console_active_event_source);
152 sd_event_source_unref(m->udev_seat_event_source);
153 sd_event_source_unref(m->udev_device_event_source);
154 sd_event_source_unref(m->udev_vcsa_event_source);
155 sd_event_source_unref(m->udev_button_event_source);
156 sd_event_source_unref(m->lid_switch_ignore_event_source);
158 safe_close(m->console_active_fd);
160 udev_monitor_unref(m->udev_seat_monitor);
161 udev_monitor_unref(m->udev_device_monitor);
162 udev_monitor_unref(m->udev_vcsa_monitor);
163 udev_monitor_unref(m->udev_button_monitor);
167 if (m->unlink_nologin)
168 (void) unlink_or_warn("/run/nologin");
170 bus_verify_polkit_async_registry_free(m->polkit_registry);
172 sd_bus_unref(m->bus);
173 sd_event_unref(m->event);
175 #if 0 /// elogind does not support autospawning of vts
176 safe_close(m->reserve_vt_fd);
178 #if 1 /// elogind has to free its own data
179 elogind_manager_free(m);
182 strv_free(m->kill_only_users);
183 strv_free(m->kill_exclude_users);
185 free(m->scheduled_shutdown_type);
186 free(m->scheduled_shutdown_tty);
187 free(m->wall_message);
188 #if 0 /// UNNEEDED by elogind
195 static int manager_enumerate_devices(Manager *m) {
196 struct udev_list_entry *item = NULL, *first = NULL;
197 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
202 /* Loads devices from udev and creates seats for them as
205 e = udev_enumerate_new(m->udev);
209 r = udev_enumerate_add_match_tag(e, "master-of-seat");
213 r = udev_enumerate_add_match_is_initialized(e);
217 r = udev_enumerate_scan_devices(e);
221 first = udev_enumerate_get_list_entry(e);
222 udev_list_entry_foreach(item, first) {
223 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
226 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
230 k = manager_process_seat_device(m, d);
238 static int manager_enumerate_buttons(Manager *m) {
239 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
240 struct udev_list_entry *item = NULL, *first = NULL;
245 /* Loads buttons from udev */
247 if (manager_all_buttons_ignored(m))
250 e = udev_enumerate_new(m->udev);
254 r = udev_enumerate_add_match_subsystem(e, "input");
258 r = udev_enumerate_add_match_tag(e, "power-switch");
262 r = udev_enumerate_add_match_is_initialized(e);
266 r = udev_enumerate_scan_devices(e);
270 first = udev_enumerate_get_list_entry(e);
271 udev_list_entry_foreach(item, first) {
272 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
275 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
279 k = manager_process_button_device(m, d);
287 static int manager_enumerate_seats(Manager *m) {
288 _cleanup_closedir_ DIR *d = NULL;
294 /* This loads data about seats stored on disk, but does not
295 * actually create any seats. Removes data of seats that no
298 d = opendir("/run/systemd/seats");
303 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
306 FOREACH_DIRENT(de, d, return -errno) {
310 if (!dirent_is_file(de))
313 s = hashmap_get(m->seats, de->d_name);
315 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
316 log_warning("Failed to remove /run/systemd/seats/%s: %m",
329 static int manager_enumerate_linger_users(Manager *m) {
330 _cleanup_closedir_ DIR *d = NULL;
336 d = opendir("/var/lib/elogind/linger");
341 return log_error_errno(errno, "Failed to open /var/lib/elogind/linger/: %m");
344 FOREACH_DIRENT(de, d, return -errno) {
347 if (!dirent_is_file(de))
350 k = manager_add_user_by_name(m, de->d_name, NULL);
352 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
360 static int manager_enumerate_users(Manager *m) {
361 _cleanup_closedir_ DIR *d = NULL;
367 /* Add lingering users */
368 r = manager_enumerate_linger_users(m);
370 /* Read in user data stored on disk */
371 d = opendir("/run/systemd/users");
376 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
379 FOREACH_DIRENT(de, d, return -errno) {
382 if (!dirent_is_file(de))
385 k = manager_add_user_by_name(m, de->d_name, &u);
387 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
393 user_add_to_gc_queue(u);
403 static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) {
404 _cleanup_strv_free_ char **parts = NULL;
405 _cleanup_free_ char *id = NULL;
406 unsigned int major, minor;
409 parts = strv_split(fdname, "-");
412 if (strv_length(parts) != 5)
415 if (!streq(parts[0], "session"))
418 id = strdup(parts[1]);
422 if (!streq(parts[2], "device"))
425 r = safe_atou(parts[3], &major);
428 r = safe_atou(parts[4], &minor);
432 *dev = makedev(major, minor);
433 *session_id = TAKE_PTR(id);
438 static int manager_attach_fds(Manager *m) {
439 _cleanup_strv_free_ char **fdnames = NULL;
442 /* Upon restart, PID1 will send us back all fds of session devices
443 * that we previously opened. Each file descriptor is associated
444 * with a given session. The session ids are passed through FDNAMES. */
446 n = sd_listen_fds_with_names(true, &fdnames);
450 for (i = 0; i < n; i++) {
451 _cleanup_free_ char *id = NULL;
458 fd = SD_LISTEN_FDS_START + i;
460 r = parse_fdname(fdnames[i], &id, &dev);
462 log_debug_errno(r, "Failed to parse fd name %s: %m", fdnames[i]);
467 s = hashmap_get(m->sessions, id);
469 /* If the session doesn't exist anymore, the associated session
470 * device attached to this fd doesn't either. Let's simply close
472 log_debug("Failed to attach fd for unknown session: %s", id);
477 if (fstat(fd, &st) < 0) {
478 /* The device is allowed to go away at a random point, in which
479 * case fstat failing is expected. */
480 log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id);
485 if (!S_ISCHR(st.st_mode) || st.st_rdev != dev) {
486 log_debug("Device fd doesn't point to the expected character device node");
491 sd = hashmap_get(s->devices, &dev);
493 /* Weird, we got an fd for a session device which wasn't
494 * recorded in the session state file... */
495 log_warning("Got fd for missing session device [%u:%u] in session %s",
496 major(dev), minor(dev), s->id);
501 log_debug("Attaching fd to session device [%u:%u] for session %s",
502 major(dev), minor(dev), s->id);
504 session_device_attach_fd(sd, fd, s->was_active);
510 static int manager_enumerate_sessions(Manager *m) {
511 _cleanup_closedir_ DIR *d = NULL;
517 /* Read in session data stored on disk */
518 d = opendir("/run/systemd/sessions");
523 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
526 FOREACH_DIRENT(de, d, return -errno) {
529 if (!dirent_is_file(de))
532 if (!session_id_valid(de->d_name)) {
533 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
538 k = manager_add_session(m, de->d_name, &s);
540 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
545 session_add_to_gc_queue(s);
552 /* We might be restarted and PID1 could have sent us back the
553 * session device fds we previously saved. */
554 k = manager_attach_fds(m);
556 log_warning_errno(k, "Failed to reattach session device fds: %m");
561 static int manager_enumerate_inhibitors(Manager *m) {
562 _cleanup_closedir_ DIR *d = NULL;
568 d = opendir("/run/systemd/inhibit");
573 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
576 FOREACH_DIRENT(de, d, return -errno) {
580 if (!dirent_is_file(de))
583 k = manager_add_inhibitor(m, de->d_name, &i);
585 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
590 k = inhibitor_load(i);
598 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
599 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
600 Manager *m = userdata;
604 d = udev_monitor_receive_device(m->udev_seat_monitor);
608 manager_process_seat_device(m, d);
612 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
613 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
614 Manager *m = userdata;
618 d = udev_monitor_receive_device(m->udev_device_monitor);
622 manager_process_seat_device(m, d);
626 #if 0 /// UNNEEDED by elogind
627 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
628 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
629 Manager *m = userdata;
634 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
638 name = udev_device_get_sysname(d);
640 /* Whenever a VCSA device is removed try to reallocate our
641 * VTs, to make sure our auto VTs never go away. */
643 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
644 seat_preallocate_vts(m->seat0);
650 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
651 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
652 Manager *m = userdata;
656 d = udev_monitor_receive_device(m->udev_button_monitor);
660 manager_process_button_device(m, d);
664 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
665 Manager *m = userdata;
669 assert(m->console_active_fd == fd);
671 seat_read_active_vt(m->seat0);
675 #if 0 /// UNNEEDED by elogind
676 static int manager_reserve_vt(Manager *m) {
677 _cleanup_free_ char *p = NULL;
681 if (m->reserve_vt <= 0)
684 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
687 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
688 if (m->reserve_vt_fd < 0) {
690 /* Don't complain on VT-less systems */
692 log_warning_errno(errno, "Failed to pin reserved VT: %m");
700 static int manager_connect_bus(Manager *m) {
706 r = sd_bus_default_system(&m->bus);
708 return log_error_errno(r, "Failed to connect to system bus: %m");
710 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
712 return log_error_errno(r, "Failed to add manager object vtable: %m");
714 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
716 return log_error_errno(r, "Failed to add seat object vtable: %m");
718 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
720 return log_error_errno(r, "Failed to add seat enumerator: %m");
722 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
724 return log_error_errno(r, "Failed to add session object vtable: %m");
726 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
728 return log_error_errno(r, "Failed to add session enumerator: %m");
730 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
732 return log_error_errno(r, "Failed to add user object vtable: %m");
734 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
736 return log_error_errno(r, "Failed to add user enumerator: %m");
738 #if 0 /// elogind does not support systemd as PID 1
739 r = sd_bus_match_signal_async(
742 "org.freedesktop.systemd1",
743 "/org/freedesktop/systemd1",
744 "org.freedesktop.systemd1.Manager",
746 match_job_removed, NULL, m);
748 return log_error_errno(r, "Failed to request match for JobRemoved: %m");
750 r = sd_bus_match_signal_async(
753 "org.freedesktop.systemd1",
754 "/org/freedesktop/systemd1",
755 "org.freedesktop.systemd1.Manager",
757 match_unit_removed, NULL, m);
759 return log_error_errno(r, "Failed to request match for UnitRemoved: %m");
761 r = sd_bus_match_signal_async(
764 "org.freedesktop.systemd1",
766 "org.freedesktop.DBus.Properties",
768 match_properties_changed, NULL, m);
770 return log_error_errno(r, "Failed to request match for PropertiesChanged: %m");
772 r = sd_bus_match_signal_async(
775 "org.freedesktop.systemd1",
776 "/org/freedesktop/systemd1",
777 "org.freedesktop.systemd1.Manager",
779 match_reloading, NULL, m);
781 return log_error_errno(r, "Failed to request match for Reloading: %m");
783 r = sd_bus_call_method_async(
786 "org.freedesktop.systemd1",
787 "/org/freedesktop/systemd1",
788 "org.freedesktop.systemd1.Manager",
794 return log_error_errno(r, "Failed to enable subscription: %m");
796 r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.login1", 0, NULL, NULL);
798 return log_error_errno(r, "Failed to request name: %m");
800 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
802 return log_error_errno(r, "Failed to attach bus to event loop: %m");
804 #if 0 /// elogind has to setup its release agent
807 r = elogind_setup_cgroups_agent(m);
813 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
815 Session *active, *iter;
818 * We got a VT-switch signal and we have to acknowledge it immediately.
819 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
820 * old user-space might run multiple sessions on a single VT, *sigh*.
821 * Therefore, we have to iterate all sessions and find one with a vtfd
822 * on the requested VT.
823 * As only VTs with active controllers have VT_PROCESS set, our current
824 * notion of the active VT might be wrong (for instance if the switch
825 * happens while we setup VT_PROCESS). Therefore, read the current VT
826 * first and then use s->active->vtnr as reference. Note that this is
827 * not racy, as no further VT-switch can happen as long as we're in
828 * synchronous VT_PROCESS mode.
832 seat_read_active_vt(m->seat0);
834 active = m->seat0->active;
835 if (!active || active->vtnr < 1) {
836 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
840 if (active->vtfd >= 0) {
841 session_leave_vt(active);
843 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
844 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
845 session_leave_vt(iter);
854 static int manager_connect_console(Manager *m) {
858 assert(m->console_active_fd < 0);
860 /* On certain architectures (S390 and Xen, and containers),
861 /dev/tty0 does not exist, so don't fail if we can't open
863 if (access("/dev/tty0", F_OK) < 0)
866 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
867 if (m->console_active_fd < 0) {
869 /* On some systems the device node /dev/tty0 may exist
870 * even though /sys/class/tty/tty0 does not. */
874 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
877 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
879 log_error("Failed to watch foreground console");
884 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
885 * as VT-acquire signal. We ignore any acquire-events (yes, we still
886 * have to provide a valid signal-number for it!) and acknowledge all
887 * release events immediately.
890 if (SIGRTMIN + 1 > SIGRTMAX) {
891 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
895 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
896 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
898 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
905 static int manager_connect_udev(Manager *m) {
909 assert(!m->udev_seat_monitor);
910 assert(!m->udev_device_monitor);
911 assert(!m->udev_vcsa_monitor);
912 assert(!m->udev_button_monitor);
914 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
915 if (!m->udev_seat_monitor)
918 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
922 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
926 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);
930 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
931 if (!m->udev_device_monitor)
934 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
938 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
942 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
946 r = udev_monitor_enable_receiving(m->udev_device_monitor);
950 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);
954 /* Don't watch keys if nobody cares */
955 if (!manager_all_buttons_ignored(m)) {
956 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
957 if (!m->udev_button_monitor)
960 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
964 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
968 r = udev_monitor_enable_receiving(m->udev_button_monitor);
972 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);
977 /* Don't bother watching VCSA devices, if nobody cares */
978 #if 0 /// elogind does not support autospawning of vts
979 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
981 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
982 if (!m->udev_vcsa_monitor)
985 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
989 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
993 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);
1002 static void manager_gc(Manager *m, bool drop_not_started) {
1009 while ((seat = m->seat_gc_queue)) {
1010 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
1011 seat->in_gc_queue = false;
1013 if (seat_may_gc(seat, drop_not_started)) {
1014 seat_stop(seat, false);
1019 while ((session = m->session_gc_queue)) {
1020 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
1021 session->in_gc_queue = false;
1023 /* First, if we are not closing yet, initiate stopping */
1024 if (session_may_gc(session, drop_not_started) &&
1025 session_get_state(session) != SESSION_CLOSING)
1026 session_stop(session, false);
1028 /* Normally, this should make the session referenced
1029 * again, if it doesn't then let's get rid of it
1031 if (session_may_gc(session, drop_not_started)) {
1032 session_finalize(session);
1033 session_free(session);
1037 while ((user = m->user_gc_queue)) {
1038 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1039 user->in_gc_queue = false;
1041 /* First step: queue stop jobs */
1042 if (user_may_gc(user, drop_not_started))
1043 user_stop(user, false);
1045 /* Second step: finalize user */
1046 if (user_may_gc(user, drop_not_started)) {
1047 user_finalize(user);
1053 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1054 Manager *m = userdata;
1055 struct dual_timestamp since;
1061 if (m->idle_action == HANDLE_IGNORE ||
1062 m->idle_action_usec <= 0)
1065 n = now(CLOCK_MONOTONIC);
1067 r = manager_get_idle_hint(m, &since);
1069 /* Not idle. Let's check if after a timeout it might be idle then. */
1070 elapse = n + m->idle_action_usec;
1072 /* Idle! Let's see if it's time to do something, or if
1073 * we shall sleep for longer. */
1075 if (n >= since.monotonic + m->idle_action_usec &&
1076 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1077 log_info("System idle. Taking action.");
1079 manager_handle_action(m, 0, m->idle_action, false, false);
1080 m->idle_action_not_before_usec = n;
1083 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1086 if (!m->idle_action_event_source) {
1088 r = sd_event_add_time(
1090 &m->idle_action_event_source,
1092 elapse, USEC_PER_SEC*30,
1093 manager_dispatch_idle_action, m);
1095 return log_error_errno(r, "Failed to add idle event source: %m");
1097 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1099 return log_error_errno(r, "Failed to set idle event source priority: %m");
1101 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1103 return log_error_errno(r, "Failed to set idle event timer: %m");
1105 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1107 return log_error_errno(r, "Failed to enable idle event timer: %m");
1113 #if 0 /// elogind parses its own config file
1115 const char* logind_conf = getenv("ELOGIND_CONF_FILE");
1120 logind_conf = PKGSYSCONFDIR "/logind.conf";
1122 return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
1123 config_item_perf_lookup, logind_gperf_lookup,
1125 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1126 Manager *m = userdata;
1129 manager_reset_config(m);
1130 r = manager_parse_config_file(m);
1132 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1134 log_info("Config file reloaded.");
1136 #if 1 /// elogind needs an Add-On for sleep configuration
1137 elogind_manager_reset_config(m);
1142 static int manager_startup(Manager *m) {
1148 Inhibitor *inhibitor;
1153 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1155 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1157 #if 1 /// elogind needs some extra preparations before connecting...
1158 elogind_manager_startup(m);
1160 /* Connect to console */
1161 r = manager_connect_console(m);
1165 /* Connect to udev */
1166 r = manager_connect_udev(m);
1168 return log_error_errno(r, "Failed to create udev watchers: %m");
1170 /* Connect to the bus */
1171 r = manager_connect_bus(m);
1175 /* Instantiate magic seat 0 */
1176 r = manager_add_seat(m, "seat0", &m->seat0);
1178 return log_error_errno(r, "Failed to add seat0: %m");
1180 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1182 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1184 /* Deserialize state */
1185 r = manager_enumerate_devices(m);
1187 log_warning_errno(r, "Device enumeration failed: %m");
1189 r = manager_enumerate_seats(m);
1191 log_warning_errno(r, "Seat enumeration failed: %m");
1193 r = manager_enumerate_users(m);
1195 log_warning_errno(r, "User enumeration failed: %m");
1197 r = manager_enumerate_sessions(m);
1199 log_warning_errno(r, "Session enumeration failed: %m");
1201 r = manager_enumerate_inhibitors(m);
1203 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1205 r = manager_enumerate_buttons(m);
1207 log_warning_errno(r, "Button enumeration failed: %m");
1209 /* Remove stale objects before we start them */
1210 manager_gc(m, false);
1212 /* Reserve the special reserved VT */
1213 #if 0 /// elogind does not support autospawning of vts
1214 manager_reserve_vt(m);
1217 /* And start everything */
1218 HASHMAP_FOREACH(seat, m->seats, i)
1221 HASHMAP_FOREACH(user, m->users, i)
1224 HASHMAP_FOREACH(session, m->sessions, i)
1225 session_start(session, NULL);
1227 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1228 inhibitor_start(inhibitor);
1230 HASHMAP_FOREACH(button, m->buttons, i)
1231 button_check_switches(button);
1233 manager_dispatch_idle_action(NULL, 0, m);
1238 static int manager_run(Manager *m) {
1244 r = sd_event_get_state(m->event);
1247 if (r == SD_EVENT_FINISHED)
1250 manager_gc(m, true);
1252 r = manager_dispatch_delayed(m, false);
1258 r = sd_event_run(m->event, (uint64_t) -1);
1264 int main(int argc, char *argv[]) {
1265 _cleanup_(manager_unrefp) Manager *m = NULL;
1268 #if 1 /// perform extra checks for elogind startup
1269 r = elogind_startup(argc, argv);
1271 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1273 elogind_set_program_name(argv[0]);
1274 log_set_target(LOG_TARGET_AUTO);
1275 log_set_facility(LOG_AUTH);
1276 log_parse_environment();
1277 #if ENABLE_DEBUG_ELOGIND
1278 log_set_max_level(LOG_DEBUG);
1279 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1280 #endif // ENABLE_DEBUG_ELOGIND
1285 #if 0 /// elogind has some extra functionality at startup, argc can be != 1
1287 log_error("This program takes no arguments.");
1293 r = mac_selinux_init();
1295 log_error_errno(r, "Could not initialize labelling: %m");
1299 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1300 mkdir_label("/run/systemd/seats", 0755);
1301 mkdir_label("/run/systemd/users", 0755);
1302 mkdir_label("/run/systemd/sessions", 0755);
1303 /* Always create the directories people can create inotify watches in. Note that some applications might check
1304 * for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
1305 * sure these directories are created early on and unconditionally. */
1306 (void) mkdir_label("/run/systemd/seats", 0755);
1307 (void) mkdir_label("/run/systemd/users", 0755);
1308 (void) mkdir_label("/run/systemd/sessions", 0755);
1310 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGHUP, SIGTERM, SIGINT, -1) >= 0);
1312 r = manager_new(&m);
1314 log_error_errno(r, "Failed to allocate manager object: %m");
1316 r = mkdir_label("/run/systemd", 0755);
1317 if ( (r < 0) && (-EEXIST != r) )
1318 return log_error_errno(r, "Failed to create /run/systemd : %m");
1319 r = mkdir_label("/run/systemd/seats", 0755);
1320 if ( r < 0 && (-EEXIST != r) )
1321 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1322 r = mkdir_label("/run/systemd/users", 0755);
1323 if ( r < 0 && (-EEXIST != r) )
1324 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1325 r = mkdir_label("/run/systemd/sessions", 0755);
1326 if ( r < 0 && (-EEXIST != r) )
1327 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1328 r = mkdir_label("/run/systemd/machines", 0755);
1329 if ( r < 0 && (-EEXIST != r) )
1330 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1335 (void) manager_parse_config_file(m);
1337 #if 1 /// elogind needs an Add-On for sleep configuration
1338 elogind_manager_reset_config(m);
1340 r = manager_startup(m);
1342 log_error_errno(r, "Failed to fully start up daemon: %m");
1346 log_debug("elogind running as pid "PID_FMT, getpid_cached());
1348 (void) sd_notify(false,
1350 "STATUS=Processing requests...");
1354 log_debug("elogind stopped as pid "PID_FMT, getpid_cached());
1356 (void) sd_notify(false,
1358 "STATUS=Shutting down...");
1361 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;