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 static int manager_new(Manager **ret) {
43 _cleanup_(manager_unrefp) Manager *m = NULL;
52 m->console_active_fd = -1;
53 #if 0 /// UNNEEDED by elogind
54 m->reserve_vt_fd = -1;
57 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
59 m->devices = hashmap_new(&string_hash_ops);
60 m->seats = hashmap_new(&string_hash_ops);
61 m->sessions = hashmap_new(&string_hash_ops);
62 m->users = hashmap_new(NULL);
63 m->inhibitors = hashmap_new(&string_hash_ops);
64 m->buttons = hashmap_new(&string_hash_ops);
66 m->user_units = hashmap_new(&string_hash_ops);
67 m->session_units = hashmap_new(&string_hash_ops);
69 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
72 #if 1 /// elogind needs some more data
73 r = elogind_manager_new(m);
81 r = sd_event_default(&m->event);
85 r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
89 r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
93 (void) sd_event_set_watchdog(m->event, true);
95 manager_reset_config(m);
101 static Manager* manager_unref(Manager *m) {
112 while ((session = hashmap_first(m->sessions)))
113 session_free(session);
115 while ((u = hashmap_first(m->users)))
118 while ((d = hashmap_first(m->devices)))
121 while ((s = hashmap_first(m->seats)))
124 while ((i = hashmap_first(m->inhibitors)))
127 while ((b = hashmap_first(m->buttons)))
130 hashmap_free(m->devices);
131 hashmap_free(m->seats);
132 hashmap_free(m->sessions);
133 hashmap_free(m->users);
134 hashmap_free(m->inhibitors);
135 hashmap_free(m->buttons);
137 hashmap_free(m->user_units);
138 hashmap_free(m->session_units);
140 sd_event_source_unref(m->idle_action_event_source);
141 sd_event_source_unref(m->inhibit_timeout_source);
142 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
143 sd_event_source_unref(m->nologin_timeout_source);
144 sd_event_source_unref(m->wall_message_timeout_source);
146 sd_event_source_unref(m->console_active_event_source);
147 sd_event_source_unref(m->udev_seat_event_source);
148 sd_event_source_unref(m->udev_device_event_source);
149 sd_event_source_unref(m->udev_vcsa_event_source);
150 sd_event_source_unref(m->udev_button_event_source);
151 sd_event_source_unref(m->lid_switch_ignore_event_source);
153 safe_close(m->console_active_fd);
155 udev_monitor_unref(m->udev_seat_monitor);
156 udev_monitor_unref(m->udev_device_monitor);
157 udev_monitor_unref(m->udev_vcsa_monitor);
158 udev_monitor_unref(m->udev_button_monitor);
162 if (m->unlink_nologin)
163 (void) unlink_or_warn("/run/nologin");
165 bus_verify_polkit_async_registry_free(m->polkit_registry);
167 sd_bus_unref(m->bus);
168 sd_event_unref(m->event);
170 #if 0 /// elogind does not support autospawning of vts
171 safe_close(m->reserve_vt_fd);
173 #if 1 /// elogind has to free its own data
174 elogind_manager_free(m);
177 strv_free(m->kill_only_users);
178 strv_free(m->kill_exclude_users);
180 free(m->scheduled_shutdown_type);
181 free(m->scheduled_shutdown_tty);
182 free(m->wall_message);
183 #if 0 /// UNNEEDED by elogind
190 static int manager_enumerate_devices(Manager *m) {
191 struct udev_list_entry *item = NULL, *first = NULL;
192 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
197 /* Loads devices from udev and creates seats for them as
200 e = udev_enumerate_new(m->udev);
204 r = udev_enumerate_add_match_tag(e, "master-of-seat");
208 r = udev_enumerate_add_match_is_initialized(e);
212 r = udev_enumerate_scan_devices(e);
216 first = udev_enumerate_get_list_entry(e);
217 udev_list_entry_foreach(item, first) {
218 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
221 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
225 k = manager_process_seat_device(m, d);
233 static int manager_enumerate_buttons(Manager *m) {
234 _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
235 struct udev_list_entry *item = NULL, *first = NULL;
240 /* Loads buttons from udev */
242 if (manager_all_buttons_ignored(m))
245 e = udev_enumerate_new(m->udev);
249 r = udev_enumerate_add_match_subsystem(e, "input");
253 r = udev_enumerate_add_match_tag(e, "power-switch");
257 r = udev_enumerate_add_match_is_initialized(e);
261 r = udev_enumerate_scan_devices(e);
265 first = udev_enumerate_get_list_entry(e);
266 udev_list_entry_foreach(item, first) {
267 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
270 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
274 k = manager_process_button_device(m, d);
282 static int manager_enumerate_seats(Manager *m) {
283 _cleanup_closedir_ DIR *d = NULL;
289 /* This loads data about seats stored on disk, but does not
290 * actually create any seats. Removes data of seats that no
293 d = opendir("/run/systemd/seats");
298 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
301 FOREACH_DIRENT(de, d, return -errno) {
305 if (!dirent_is_file(de))
308 s = hashmap_get(m->seats, de->d_name);
310 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
311 log_warning("Failed to remove /run/systemd/seats/%s: %m",
324 static int manager_enumerate_linger_users(Manager *m) {
325 _cleanup_closedir_ DIR *d = NULL;
331 d = opendir("/var/lib/elogind/linger");
336 return log_error_errno(errno, "Failed to open /var/lib/elogind/linger/: %m");
339 FOREACH_DIRENT(de, d, return -errno) {
342 if (!dirent_is_file(de))
345 k = manager_add_user_by_name(m, de->d_name, NULL);
347 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
355 static int manager_enumerate_users(Manager *m) {
356 _cleanup_closedir_ DIR *d = NULL;
362 /* Add lingering users */
363 r = manager_enumerate_linger_users(m);
365 /* Read in user data stored on disk */
366 d = opendir("/run/systemd/users");
371 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
374 FOREACH_DIRENT(de, d, return -errno) {
377 if (!dirent_is_file(de))
380 k = manager_add_user_by_name(m, de->d_name, &u);
382 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
388 user_add_to_gc_queue(u);
398 static int parse_fdname(const char *fdname, char **session_id, dev_t *dev) {
399 _cleanup_strv_free_ char **parts = NULL;
400 _cleanup_free_ char *id = NULL;
401 unsigned int major, minor;
404 parts = strv_split(fdname, "-");
407 if (strv_length(parts) != 5)
410 if (!streq(parts[0], "session"))
413 id = strdup(parts[1]);
417 if (!streq(parts[2], "device"))
420 r = safe_atou(parts[3], &major);
423 r = safe_atou(parts[4], &minor);
427 *dev = makedev(major, minor);
428 *session_id = TAKE_PTR(id);
433 static int manager_attach_fds(Manager *m) {
434 _cleanup_strv_free_ char **fdnames = NULL;
437 /* Upon restart, PID1 will send us back all fds of session devices
438 * that we previously opened. Each file descriptor is associated
439 * with a given session. The session ids are passed through FDNAMES. */
441 n = sd_listen_fds_with_names(true, &fdnames);
445 for (i = 0; i < n; i++) {
446 _cleanup_free_ char *id = NULL;
453 fd = SD_LISTEN_FDS_START + i;
455 r = parse_fdname(fdnames[i], &id, &dev);
457 log_debug_errno(r, "Failed to parse fd name %s: %m", fdnames[i]);
462 s = hashmap_get(m->sessions, id);
464 /* If the session doesn't exist anymore, the associated session
465 * device attached to this fd doesn't either. Let's simply close
467 log_debug("Failed to attach fd for unknown session: %s", id);
472 if (fstat(fd, &st) < 0) {
473 /* The device is allowed to go away at a random point, in which
474 * case fstat failing is expected. */
475 log_debug_errno(errno, "Failed to stat device fd for session %s: %m", id);
480 if (!S_ISCHR(st.st_mode) || st.st_rdev != dev) {
481 log_debug("Device fd doesn't point to the expected character device node");
486 sd = hashmap_get(s->devices, &dev);
488 /* Weird, we got an fd for a session device which wasn't
489 * recorded in the session state file... */
490 log_warning("Got fd for missing session device [%u:%u] in session %s",
491 major(dev), minor(dev), s->id);
496 log_debug("Attaching fd to session device [%u:%u] for session %s",
497 major(dev), minor(dev), s->id);
499 session_device_attach_fd(sd, fd, s->was_active);
505 static int manager_enumerate_sessions(Manager *m) {
506 _cleanup_closedir_ DIR *d = NULL;
512 /* Read in session data stored on disk */
513 d = opendir("/run/systemd/sessions");
518 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
521 FOREACH_DIRENT(de, d, return -errno) {
524 if (!dirent_is_file(de))
527 if (!session_id_valid(de->d_name)) {
528 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
533 k = manager_add_session(m, de->d_name, &s);
535 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
540 session_add_to_gc_queue(s);
547 /* We might be restarted and PID1 could have sent us back the
548 * session device fds we previously saved. */
549 k = manager_attach_fds(m);
551 log_warning_errno(k, "Failed to reattach session device fds: %m");
556 static int manager_enumerate_inhibitors(Manager *m) {
557 _cleanup_closedir_ DIR *d = NULL;
563 d = opendir("/run/systemd/inhibit");
568 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
571 FOREACH_DIRENT(de, d, return -errno) {
575 if (!dirent_is_file(de))
578 k = manager_add_inhibitor(m, de->d_name, &i);
580 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
585 k = inhibitor_load(i);
593 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
594 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
595 Manager *m = userdata;
599 d = udev_monitor_receive_device(m->udev_seat_monitor);
603 manager_process_seat_device(m, d);
607 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
608 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
609 Manager *m = userdata;
613 d = udev_monitor_receive_device(m->udev_device_monitor);
617 manager_process_seat_device(m, d);
621 #if 0 /// UNNEEDED by elogind
622 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
623 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
624 Manager *m = userdata;
629 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
633 name = udev_device_get_sysname(d);
635 /* Whenever a VCSA device is removed try to reallocate our
636 * VTs, to make sure our auto VTs never go away. */
638 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
639 seat_preallocate_vts(m->seat0);
645 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
646 _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
647 Manager *m = userdata;
651 d = udev_monitor_receive_device(m->udev_button_monitor);
655 manager_process_button_device(m, d);
659 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
660 Manager *m = userdata;
664 assert(m->console_active_fd == fd);
666 seat_read_active_vt(m->seat0);
670 #if 0 /// UNNEEDED by elogind
671 static int manager_reserve_vt(Manager *m) {
672 _cleanup_free_ char *p = NULL;
676 if (m->reserve_vt <= 0)
679 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
682 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
683 if (m->reserve_vt_fd < 0) {
685 /* Don't complain on VT-less systems */
687 log_warning_errno(errno, "Failed to pin reserved VT: %m");
695 static int manager_connect_bus(Manager *m) {
701 r = sd_bus_default_system(&m->bus);
703 return log_error_errno(r, "Failed to connect to system bus: %m");
705 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
707 return log_error_errno(r, "Failed to add manager object vtable: %m");
709 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
711 return log_error_errno(r, "Failed to add seat object vtable: %m");
713 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
715 return log_error_errno(r, "Failed to add seat enumerator: %m");
717 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
719 return log_error_errno(r, "Failed to add session object vtable: %m");
721 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
723 return log_error_errno(r, "Failed to add session enumerator: %m");
725 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
727 return log_error_errno(r, "Failed to add user object vtable: %m");
729 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
731 return log_error_errno(r, "Failed to add user enumerator: %m");
733 #if 0 /// elogind does not support systemd as PID 1
734 r = sd_bus_match_signal_async(
737 "org.freedesktop.systemd1",
738 "/org/freedesktop/systemd1",
739 "org.freedesktop.systemd1.Manager",
741 match_job_removed, NULL, m);
743 return log_error_errno(r, "Failed to request match for JobRemoved: %m");
745 r = sd_bus_match_signal_async(
748 "org.freedesktop.systemd1",
749 "/org/freedesktop/systemd1",
750 "org.freedesktop.systemd1.Manager",
752 match_unit_removed, NULL, m);
754 return log_error_errno(r, "Failed to request match for UnitRemoved: %m");
756 r = sd_bus_match_signal_async(
759 "org.freedesktop.systemd1",
761 "org.freedesktop.DBus.Properties",
763 match_properties_changed, NULL, m);
765 return log_error_errno(r, "Failed to request match for PropertiesChanged: %m");
767 r = sd_bus_match_signal_async(
770 "org.freedesktop.systemd1",
771 "/org/freedesktop/systemd1",
772 "org.freedesktop.systemd1.Manager",
774 match_reloading, NULL, m);
776 return log_error_errno(r, "Failed to request match for Reloading: %m");
778 r = sd_bus_call_method_async(
781 "org.freedesktop.systemd1",
782 "/org/freedesktop/systemd1",
783 "org.freedesktop.systemd1.Manager",
789 return log_error_errno(r, "Failed to enable subscription: %m");
791 r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.login1", 0, NULL, NULL);
793 return log_error_errno(r, "Failed to request name: %m");
795 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
797 return log_error_errno(r, "Failed to attach bus to event loop: %m");
799 #if 0 /// elogind has to setup its release agent
802 r = elogind_setup_cgroups_agent(m);
808 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
810 Session *active, *iter;
813 * We got a VT-switch signal and we have to acknowledge it immediately.
814 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
815 * old user-space might run multiple sessions on a single VT, *sigh*.
816 * Therefore, we have to iterate all sessions and find one with a vtfd
817 * on the requested VT.
818 * As only VTs with active controllers have VT_PROCESS set, our current
819 * notion of the active VT might be wrong (for instance if the switch
820 * happens while we setup VT_PROCESS). Therefore, read the current VT
821 * first and then use s->active->vtnr as reference. Note that this is
822 * not racy, as no further VT-switch can happen as long as we're in
823 * synchronous VT_PROCESS mode.
827 seat_read_active_vt(m->seat0);
829 active = m->seat0->active;
830 if (!active || active->vtnr < 1) {
831 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
835 if (active->vtfd >= 0) {
836 session_leave_vt(active);
838 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
839 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
840 session_leave_vt(iter);
849 static int manager_connect_console(Manager *m) {
853 assert(m->console_active_fd < 0);
855 /* On certain architectures (S390 and Xen, and containers),
856 /dev/tty0 does not exist, so don't fail if we can't open
858 if (access("/dev/tty0", F_OK) < 0)
861 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
862 if (m->console_active_fd < 0) {
864 /* On some systems the device node /dev/tty0 may exist
865 * even though /sys/class/tty/tty0 does not. */
869 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
872 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
874 log_error("Failed to watch foreground console");
879 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
880 * as VT-acquire signal. We ignore any acquire-events (yes, we still
881 * have to provide a valid signal-number for it!) and acknowledge all
882 * release events immediately.
885 if (SIGRTMIN + 1 > SIGRTMAX) {
886 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
890 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
891 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
893 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
900 static int manager_connect_udev(Manager *m) {
904 assert(!m->udev_seat_monitor);
905 assert(!m->udev_device_monitor);
906 assert(!m->udev_vcsa_monitor);
907 assert(!m->udev_button_monitor);
909 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
910 if (!m->udev_seat_monitor)
913 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
917 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
921 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);
925 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
926 if (!m->udev_device_monitor)
929 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
933 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
937 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
941 r = udev_monitor_enable_receiving(m->udev_device_monitor);
945 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);
949 /* Don't watch keys if nobody cares */
950 if (!manager_all_buttons_ignored(m)) {
951 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
952 if (!m->udev_button_monitor)
955 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
959 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
963 r = udev_monitor_enable_receiving(m->udev_button_monitor);
967 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);
972 /* Don't bother watching VCSA devices, if nobody cares */
973 #if 0 /// elogind does not support autospawning of vts
974 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
976 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
977 if (!m->udev_vcsa_monitor)
980 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
984 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
988 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);
997 static void manager_gc(Manager *m, bool drop_not_started) {
1004 while ((seat = m->seat_gc_queue)) {
1005 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
1006 seat->in_gc_queue = false;
1008 if (seat_may_gc(seat, drop_not_started)) {
1009 seat_stop(seat, false);
1014 while ((session = m->session_gc_queue)) {
1015 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
1016 session->in_gc_queue = false;
1018 /* First, if we are not closing yet, initiate stopping */
1019 if (session_may_gc(session, drop_not_started) &&
1020 session_get_state(session) != SESSION_CLOSING)
1021 session_stop(session, false);
1023 /* Normally, this should make the session referenced
1024 * again, if it doesn't then let's get rid of it
1026 if (session_may_gc(session, drop_not_started)) {
1027 session_finalize(session);
1028 session_free(session);
1032 while ((user = m->user_gc_queue)) {
1033 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1034 user->in_gc_queue = false;
1036 /* First step: queue stop jobs */
1037 if (user_may_gc(user, drop_not_started))
1038 user_stop(user, false);
1040 /* Second step: finalize user */
1041 if (user_may_gc(user, drop_not_started)) {
1042 user_finalize(user);
1048 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1049 Manager *m = userdata;
1050 struct dual_timestamp since;
1056 if (m->idle_action == HANDLE_IGNORE ||
1057 m->idle_action_usec <= 0)
1060 n = now(CLOCK_MONOTONIC);
1062 r = manager_get_idle_hint(m, &since);
1064 /* Not idle. Let's check if after a timeout it might be idle then. */
1065 elapse = n + m->idle_action_usec;
1067 /* Idle! Let's see if it's time to do something, or if
1068 * we shall sleep for longer. */
1070 if (n >= since.monotonic + m->idle_action_usec &&
1071 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1072 log_info("System idle. Taking action.");
1074 manager_handle_action(m, 0, m->idle_action, false, false);
1075 m->idle_action_not_before_usec = n;
1078 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1081 if (!m->idle_action_event_source) {
1083 r = sd_event_add_time(
1085 &m->idle_action_event_source,
1087 elapse, USEC_PER_SEC*30,
1088 manager_dispatch_idle_action, m);
1090 return log_error_errno(r, "Failed to add idle event source: %m");
1092 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1094 return log_error_errno(r, "Failed to set idle event source priority: %m");
1096 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1098 return log_error_errno(r, "Failed to set idle event timer: %m");
1100 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1102 return log_error_errno(r, "Failed to enable idle event timer: %m");
1108 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1109 Manager *m = userdata;
1112 manager_reset_config(m);
1113 r = manager_parse_config_file(m);
1115 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1117 log_info("Config file reloaded.");
1119 #if 1 /// elogind needs an Add-On for sleep configuration
1120 elogind_manager_reset_config(m);
1125 static int manager_startup(Manager *m) {
1131 Inhibitor *inhibitor;
1136 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1138 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1140 #if 1 /// elogind needs some extra preparations before connecting...
1141 elogind_manager_startup(m);
1143 /* Connect to console */
1144 r = manager_connect_console(m);
1148 /* Connect to udev */
1149 r = manager_connect_udev(m);
1151 return log_error_errno(r, "Failed to create udev watchers: %m");
1153 /* Connect to the bus */
1154 r = manager_connect_bus(m);
1158 /* Instantiate magic seat 0 */
1159 r = manager_add_seat(m, "seat0", &m->seat0);
1161 return log_error_errno(r, "Failed to add seat0: %m");
1163 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1165 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1167 /* Deserialize state */
1168 r = manager_enumerate_devices(m);
1170 log_warning_errno(r, "Device enumeration failed: %m");
1172 r = manager_enumerate_seats(m);
1174 log_warning_errno(r, "Seat enumeration failed: %m");
1176 r = manager_enumerate_users(m);
1178 log_warning_errno(r, "User enumeration failed: %m");
1180 r = manager_enumerate_sessions(m);
1182 log_warning_errno(r, "Session enumeration failed: %m");
1184 r = manager_enumerate_inhibitors(m);
1186 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1188 r = manager_enumerate_buttons(m);
1190 log_warning_errno(r, "Button enumeration failed: %m");
1192 /* Remove stale objects before we start them */
1193 manager_gc(m, false);
1195 /* Reserve the special reserved VT */
1196 #if 0 /// elogind does not support autospawning of vts
1197 manager_reserve_vt(m);
1200 /* And start everything */
1201 HASHMAP_FOREACH(seat, m->seats, i)
1204 HASHMAP_FOREACH(user, m->users, i)
1207 HASHMAP_FOREACH(session, m->sessions, i)
1208 session_start(session, NULL);
1210 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1211 inhibitor_start(inhibitor);
1213 HASHMAP_FOREACH(button, m->buttons, i)
1214 button_check_switches(button);
1216 manager_dispatch_idle_action(NULL, 0, m);
1221 static int manager_run(Manager *m) {
1227 r = sd_event_get_state(m->event);
1230 if (r == SD_EVENT_FINISHED)
1233 manager_gc(m, true);
1235 r = manager_dispatch_delayed(m, false);
1241 r = sd_event_run(m->event, (uint64_t) -1);
1247 int main(int argc, char *argv[]) {
1248 _cleanup_(manager_unrefp) Manager *m = NULL;
1251 #if 1 /// perform extra checks for elogind startup
1252 r = elogind_startup(argc, argv);
1254 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1256 elogind_set_program_name(argv[0]);
1257 log_set_target(LOG_TARGET_AUTO);
1258 log_set_facility(LOG_AUTH);
1259 log_parse_environment();
1260 #if ENABLE_DEBUG_ELOGIND
1261 log_set_max_level(LOG_DEBUG);
1262 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1263 #endif // ENABLE_DEBUG_ELOGIND
1268 #if 0 /// elogind has some extra functionality at startup, argc can be != 1
1270 log_error("This program takes no arguments.");
1276 r = mac_selinux_init();
1278 log_error_errno(r, "Could not initialize labelling: %m");
1282 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1283 mkdir_label("/run/systemd/seats", 0755);
1284 mkdir_label("/run/systemd/users", 0755);
1285 mkdir_label("/run/systemd/sessions", 0755);
1286 /* Always create the directories people can create inotify watches in. Note that some applications might check
1287 * for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
1288 * sure these directories are created early on and unconditionally. */
1289 (void) mkdir_label("/run/systemd/seats", 0755);
1290 (void) mkdir_label("/run/systemd/users", 0755);
1291 (void) mkdir_label("/run/systemd/sessions", 0755);
1293 r = mkdir_label("/run/systemd", 0755);
1294 if ( (r < 0) && (-EEXIST != r) )
1295 return log_error_errno(r, "Failed to create /run/systemd : %m");
1296 r = mkdir_label("/run/systemd/seats", 0755);
1297 if ( r < 0 && (-EEXIST != r) )
1298 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1299 r = mkdir_label("/run/systemd/users", 0755);
1300 if ( r < 0 && (-EEXIST != r) )
1301 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1302 r = mkdir_label("/run/systemd/sessions", 0755);
1303 if ( r < 0 && (-EEXIST != r) )
1304 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1305 r = mkdir_label("/run/systemd/machines", 0755);
1306 if ( r < 0 && (-EEXIST != r) )
1307 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
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");
1318 (void) manager_parse_config_file(m);
1320 #if 1 /// elogind needs an Add-On for sleep configuration
1321 elogind_manager_reset_config(m);
1323 r = manager_startup(m);
1325 log_error_errno(r, "Failed to fully start up daemon: %m");
1329 log_debug("elogind running as pid "PID_FMT, getpid_cached());
1331 (void) sd_notify(false,
1333 "STATUS=Processing requests...");
1337 log_debug("elogind stopped as pid "PID_FMT, getpid_cached());
1339 (void) sd_notify(false,
1341 "STATUS=Shutting down...");
1344 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;