2 This file is part of systemd.
4 Copyright 2011 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #if 0 /// elogind needs the systems udev header
30 #include "sd-daemon.h"
32 #include "alloc-util.h"
33 #include "bus-error.h"
35 #include "conf-parser.h"
37 #include "dirent-util.h"
39 #include "formats-util.h"
41 #include "selinux-util.h"
42 #include "signal-util.h"
44 #include "udev-util.h"
46 /// Additional includes needed by elogind
47 #include "cgroup.h" // From src/core/
50 #include "musl_missing.h"
52 static void manager_free(Manager *m);
54 static void manager_reset_config(Manager *m) {
56 #if 0 /// elogind does not support autospawning of vts
61 m->inhibit_delay_max = 5 * USEC_PER_SEC;
62 m->handle_power_key = HANDLE_POWEROFF;
63 m->handle_suspend_key = HANDLE_SUSPEND;
64 m->handle_hibernate_key = HANDLE_HIBERNATE;
65 m->handle_lid_switch = HANDLE_SUSPEND;
66 m->handle_lid_switch_docked = HANDLE_IGNORE;
67 m->power_key_ignore_inhibited = false;
68 m->suspend_key_ignore_inhibited = false;
69 m->hibernate_key_ignore_inhibited = false;
70 m->lid_switch_ignore_inhibited = true;
72 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
74 m->idle_action_usec = 30 * USEC_PER_MINUTE;
75 m->idle_action = HANDLE_IGNORE;
77 m->runtime_dir_size = physical_memory_scale(10U, 100U); /* 10% */
78 m->user_tasks_max = system_tasks_max_scale(33U, 100U); /* 33% */
79 m->sessions_max = 8192;
80 m->inhibitors_max = 8192;
82 m->kill_user_processes = KILL_USER_PROCESSES;
84 m->kill_only_users = strv_free(m->kill_only_users);
85 m->kill_exclude_users = strv_free(m->kill_exclude_users);
87 #if 1 /// elogind needs an Add-On for sleep configuration
88 elogind_manager_reset_config(m);
92 static Manager *manager_new(void) {
100 m->console_active_fd = -1;
101 #if 0 /// UNNEEDED by elogind
102 m->reserve_vt_fd = -1;
105 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
107 m->devices = hashmap_new(&string_hash_ops);
108 m->seats = hashmap_new(&string_hash_ops);
109 m->sessions = hashmap_new(&string_hash_ops);
110 m->users = hashmap_new(NULL);
111 m->inhibitors = hashmap_new(&string_hash_ops);
112 m->buttons = hashmap_new(&string_hash_ops);
114 m->user_units = hashmap_new(&string_hash_ops);
115 m->session_units = hashmap_new(&string_hash_ops);
117 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
120 #if 1 /// elogind needs some more data
121 r = elogind_manager_new(m);
126 m->udev = udev_new();
130 r = sd_event_default(&m->event);
134 sd_event_set_watchdog(m->event, true);
136 manager_reset_config(m);
145 static void manager_free(Manager *m) {
155 while ((session = hashmap_first(m->sessions)))
156 session_free(session);
158 while ((u = hashmap_first(m->users)))
161 while ((d = hashmap_first(m->devices)))
164 while ((s = hashmap_first(m->seats)))
167 while ((i = hashmap_first(m->inhibitors)))
170 while ((b = hashmap_first(m->buttons)))
173 hashmap_free(m->devices);
174 hashmap_free(m->seats);
175 hashmap_free(m->sessions);
176 hashmap_free(m->users);
177 hashmap_free(m->inhibitors);
178 hashmap_free(m->buttons);
180 hashmap_free(m->user_units);
181 hashmap_free(m->session_units);
183 sd_event_source_unref(m->idle_action_event_source);
184 sd_event_source_unref(m->inhibit_timeout_source);
185 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
186 sd_event_source_unref(m->nologin_timeout_source);
187 sd_event_source_unref(m->wall_message_timeout_source);
189 sd_event_source_unref(m->console_active_event_source);
190 sd_event_source_unref(m->udev_seat_event_source);
191 sd_event_source_unref(m->udev_device_event_source);
192 sd_event_source_unref(m->udev_vcsa_event_source);
193 sd_event_source_unref(m->udev_button_event_source);
194 sd_event_source_unref(m->lid_switch_ignore_event_source);
196 safe_close(m->console_active_fd);
198 udev_monitor_unref(m->udev_seat_monitor);
199 udev_monitor_unref(m->udev_device_monitor);
200 udev_monitor_unref(m->udev_vcsa_monitor);
201 udev_monitor_unref(m->udev_button_monitor);
205 if (m->unlink_nologin)
206 (void) unlink("/run/nologin");
208 bus_verify_polkit_async_registry_free(m->polkit_registry);
210 sd_bus_unref(m->bus);
211 sd_event_unref(m->event);
213 #if 0 /// elogind does not support autospawning of vts
214 safe_close(m->reserve_vt_fd);
217 #if 1 /// elogind has to free its own data
218 elogind_manager_free(m);
221 strv_free(m->kill_only_users);
222 strv_free(m->kill_exclude_users);
224 free(m->scheduled_shutdown_type);
225 free(m->scheduled_shutdown_tty);
226 free(m->wall_message);
227 #if 0 /// UNNEEDED by elogind
233 static int manager_enumerate_devices(Manager *m) {
234 struct udev_list_entry *item = NULL, *first = NULL;
235 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
240 /* Loads devices from udev and creates seats for them as
243 e = udev_enumerate_new(m->udev);
247 r = udev_enumerate_add_match_tag(e, "master-of-seat");
251 r = udev_enumerate_add_match_is_initialized(e);
255 r = udev_enumerate_scan_devices(e);
259 first = udev_enumerate_get_list_entry(e);
260 udev_list_entry_foreach(item, first) {
261 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
264 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
268 k = manager_process_seat_device(m, d);
276 static int manager_enumerate_buttons(Manager *m) {
277 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
278 struct udev_list_entry *item = NULL, *first = NULL;
283 /* Loads buttons from udev */
285 if (m->handle_power_key == HANDLE_IGNORE &&
286 m->handle_suspend_key == HANDLE_IGNORE &&
287 m->handle_hibernate_key == HANDLE_IGNORE &&
288 m->handle_lid_switch == HANDLE_IGNORE &&
289 m->handle_lid_switch_docked == HANDLE_IGNORE)
292 e = udev_enumerate_new(m->udev);
296 r = udev_enumerate_add_match_subsystem(e, "input");
300 r = udev_enumerate_add_match_tag(e, "power-switch");
304 r = udev_enumerate_add_match_is_initialized(e);
308 r = udev_enumerate_scan_devices(e);
312 first = udev_enumerate_get_list_entry(e);
313 udev_list_entry_foreach(item, first) {
314 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
317 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
321 k = manager_process_button_device(m, d);
329 static int manager_enumerate_seats(Manager *m) {
330 _cleanup_closedir_ DIR *d = NULL;
336 /* This loads data about seats stored on disk, but does not
337 * actually create any seats. Removes data of seats that no
340 d = opendir("/run/systemd/seats");
345 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
348 FOREACH_DIRENT(de, d, return -errno) {
352 if (!dirent_is_file(de))
355 s = hashmap_get(m->seats, de->d_name);
357 unlinkat(dirfd(d), de->d_name, 0);
369 static int manager_enumerate_linger_users(Manager *m) {
370 _cleanup_closedir_ DIR *d = NULL;
376 d = opendir("/var/lib/systemd/linger");
381 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
384 FOREACH_DIRENT(de, d, return -errno) {
387 if (!dirent_is_file(de))
390 k = manager_add_user_by_name(m, de->d_name, NULL);
392 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
400 static int manager_enumerate_users(Manager *m) {
401 _cleanup_closedir_ DIR *d = NULL;
407 /* Add lingering users */
408 r = manager_enumerate_linger_users(m);
410 /* Read in user data stored on disk */
411 d = opendir("/run/systemd/users");
416 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
419 FOREACH_DIRENT(de, d, return -errno) {
422 if (!dirent_is_file(de))
425 k = manager_add_user_by_name(m, de->d_name, &u);
427 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
433 user_add_to_gc_queue(u);
443 static int manager_enumerate_sessions(Manager *m) {
444 _cleanup_closedir_ DIR *d = NULL;
450 /* Read in session data stored on disk */
451 d = opendir("/run/systemd/sessions");
456 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
459 FOREACH_DIRENT(de, d, return -errno) {
463 if (!dirent_is_file(de))
466 if (!session_id_valid(de->d_name)) {
467 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
472 k = manager_add_session(m, de->d_name, &s);
474 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
480 session_add_to_gc_queue(s);
490 static int manager_enumerate_inhibitors(Manager *m) {
491 _cleanup_closedir_ DIR *d = NULL;
497 d = opendir("/run/systemd/inhibit");
502 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
505 FOREACH_DIRENT(de, d, return -errno) {
509 if (!dirent_is_file(de))
512 k = manager_add_inhibitor(m, de->d_name, &i);
514 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
519 k = inhibitor_load(i);
527 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
528 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
529 Manager *m = userdata;
533 d = udev_monitor_receive_device(m->udev_seat_monitor);
537 manager_process_seat_device(m, d);
541 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
542 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
543 Manager *m = userdata;
547 d = udev_monitor_receive_device(m->udev_device_monitor);
551 manager_process_seat_device(m, d);
555 #if 0 /// UNNEEDED by elogind
556 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
557 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
558 Manager *m = userdata;
563 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
567 name = udev_device_get_sysname(d);
569 /* Whenever a VCSA device is removed try to reallocate our
570 * VTs, to make sure our auto VTs never go away. */
572 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
573 seat_preallocate_vts(m->seat0);
579 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
580 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
581 Manager *m = userdata;
585 d = udev_monitor_receive_device(m->udev_button_monitor);
589 manager_process_button_device(m, d);
593 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
594 Manager *m = userdata;
598 assert(m->console_active_fd == fd);
600 seat_read_active_vt(m->seat0);
604 #if 0 /// UNNEEDED by elogind
605 static int manager_reserve_vt(Manager *m) {
606 _cleanup_free_ char *p = NULL;
610 if (m->reserve_vt <= 0)
613 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
616 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
617 if (m->reserve_vt_fd < 0) {
619 /* Don't complain on VT-less systems */
621 log_warning_errno(errno, "Failed to pin reserved VT: %m");
629 static int manager_connect_bus(Manager *m) {
630 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
636 r = sd_bus_default_system(&m->bus);
638 return log_error_errno(r, "Failed to connect to system bus: %m");
640 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
642 return log_error_errno(r, "Failed to add manager object vtable: %m");
644 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
646 return log_error_errno(r, "Failed to add seat object vtable: %m");
648 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
650 return log_error_errno(r, "Failed to add seat enumerator: %m");
652 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
654 return log_error_errno(r, "Failed to add session object vtable: %m");
656 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
658 return log_error_errno(r, "Failed to add session enumerator: %m");
660 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
662 return log_error_errno(r, "Failed to add user object vtable: %m");
664 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
666 return log_error_errno(r, "Failed to add user enumerator: %m");
668 #if 0 /// elogind does not support systemd as PID 1
669 r = sd_bus_add_match(m->bus,
672 "sender='org.freedesktop.systemd1',"
673 "interface='org.freedesktop.systemd1.Manager',"
674 "member='JobRemoved',"
675 "path='/org/freedesktop/systemd1'",
676 match_job_removed, m);
678 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
680 r = sd_bus_add_match(m->bus,
683 "sender='org.freedesktop.systemd1',"
684 "interface='org.freedesktop.systemd1.Manager',"
685 "member='UnitRemoved',"
686 "path='/org/freedesktop/systemd1'",
687 match_unit_removed, m);
689 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
691 r = sd_bus_add_match(m->bus,
694 "sender='org.freedesktop.systemd1',"
695 "interface='org.freedesktop.DBus.Properties',"
696 "member='PropertiesChanged'",
697 match_properties_changed, m);
699 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
701 r = sd_bus_add_match(m->bus,
704 "sender='org.freedesktop.systemd1',"
705 "interface='org.freedesktop.systemd1.Manager',"
706 "member='Reloading',"
707 "path='/org/freedesktop/systemd1'",
710 return log_error_errno(r, "Failed to add match for Reloading: %m");
712 r = sd_bus_call_method(
714 "org.freedesktop.systemd1",
715 "/org/freedesktop/systemd1",
716 "org.freedesktop.systemd1.Manager",
721 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
726 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
728 return log_error_errno(r, "Failed to register name: %m");
730 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
732 return log_error_errno(r, "Failed to attach bus to event loop: %m");
734 #if 1 /// elogind has to setup its release agent
735 elogind_bus_setup_system(m);
736 r = elogind_setup_cgroups_agent(m);
742 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
744 Session *active, *iter;
747 * We got a VT-switch signal and we have to acknowledge it immediately.
748 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
749 * old user-space might run multiple sessions on a single VT, *sigh*.
750 * Therefore, we have to iterate all sessions and find one with a vtfd
751 * on the requested VT.
752 * As only VTs with active controllers have VT_PROCESS set, our current
753 * notion of the active VT might be wrong (for instance if the switch
754 * happens while we setup VT_PROCESS). Therefore, read the current VT
755 * first and then use s->active->vtnr as reference. Note that this is
756 * not racy, as no further VT-switch can happen as long as we're in
757 * synchronous VT_PROCESS mode.
761 seat_read_active_vt(m->seat0);
763 active = m->seat0->active;
764 if (!active || active->vtnr < 1) {
765 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
769 if (active->vtfd >= 0) {
770 session_leave_vt(active);
772 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
773 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
774 session_leave_vt(iter);
783 static int manager_connect_console(Manager *m) {
787 assert(m->console_active_fd < 0);
789 /* On certain architectures (S390 and Xen, and containers),
790 /dev/tty0 does not exist, so don't fail if we can't open
792 if (access("/dev/tty0", F_OK) < 0)
795 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
796 if (m->console_active_fd < 0) {
798 /* On some systems the device node /dev/tty0 may exist
799 * even though /sys/class/tty/tty0 does not. */
803 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
806 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
808 log_error("Failed to watch foreground console");
813 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
814 * as VT-acquire signal. We ignore any acquire-events (yes, we still
815 * have to provide a valid signal-number for it!) and acknowledge all
816 * release events immediately.
819 if (SIGRTMIN + 1 > SIGRTMAX) {
820 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
824 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
825 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
827 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
834 static int manager_connect_udev(Manager *m) {
838 assert(!m->udev_seat_monitor);
839 assert(!m->udev_device_monitor);
840 assert(!m->udev_vcsa_monitor);
841 assert(!m->udev_button_monitor);
843 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
844 if (!m->udev_seat_monitor)
847 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
851 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
855 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);
859 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
860 if (!m->udev_device_monitor)
863 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
867 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
871 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
875 r = udev_monitor_enable_receiving(m->udev_device_monitor);
879 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);
883 /* Don't watch keys if nobody cares */
884 if (m->handle_power_key != HANDLE_IGNORE ||
885 m->handle_suspend_key != HANDLE_IGNORE ||
886 m->handle_hibernate_key != HANDLE_IGNORE ||
887 m->handle_lid_switch != HANDLE_IGNORE ||
888 m->handle_lid_switch_docked != HANDLE_IGNORE) {
890 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
891 if (!m->udev_button_monitor)
894 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
898 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
902 r = udev_monitor_enable_receiving(m->udev_button_monitor);
906 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);
911 /* Don't bother watching VCSA devices, if nobody cares */
912 #if 0 /// elogind does not support autospawning of vts
913 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
915 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
916 if (!m->udev_vcsa_monitor)
919 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
923 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
927 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);
936 static void manager_gc(Manager *m, bool drop_not_started) {
943 while ((seat = m->seat_gc_queue)) {
944 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
945 seat->in_gc_queue = false;
947 if (!seat_check_gc(seat, drop_not_started)) {
948 seat_stop(seat, false);
953 while ((session = m->session_gc_queue)) {
954 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
955 session->in_gc_queue = false;
957 /* First, if we are not closing yet, initiate stopping */
958 if (!session_check_gc(session, drop_not_started) &&
959 session_get_state(session) != SESSION_CLOSING)
960 session_stop(session, false);
962 /* Normally, this should make the session referenced
963 * again, if it doesn't then let's get rid of it
965 if (!session_check_gc(session, drop_not_started)) {
966 session_finalize(session);
967 session_free(session);
971 while ((user = m->user_gc_queue)) {
972 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
973 user->in_gc_queue = false;
975 /* First step: queue stop jobs */
976 if (!user_check_gc(user, drop_not_started))
977 user_stop(user, false);
979 /* Second step: finalize user */
980 if (!user_check_gc(user, drop_not_started)) {
987 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
988 Manager *m = userdata;
989 struct dual_timestamp since;
995 if (m->idle_action == HANDLE_IGNORE ||
996 m->idle_action_usec <= 0)
999 n = now(CLOCK_MONOTONIC);
1001 r = manager_get_idle_hint(m, &since);
1003 /* Not idle. Let's check if after a timeout it might be idle then. */
1004 elapse = n + m->idle_action_usec;
1006 /* Idle! Let's see if it's time to do something, or if
1007 * we shall sleep for longer. */
1009 if (n >= since.monotonic + m->idle_action_usec &&
1010 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1011 log_info("System idle. Taking action.");
1013 manager_handle_action(m, 0, m->idle_action, false, false);
1014 m->idle_action_not_before_usec = n;
1017 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1020 if (!m->idle_action_event_source) {
1022 r = sd_event_add_time(
1024 &m->idle_action_event_source,
1026 elapse, USEC_PER_SEC*30,
1027 manager_dispatch_idle_action, m);
1029 return log_error_errno(r, "Failed to add idle event source: %m");
1031 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1033 return log_error_errno(r, "Failed to set idle event source priority: %m");
1035 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1037 return log_error_errno(r, "Failed to set idle event timer: %m");
1039 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1041 return log_error_errno(r, "Failed to enable idle event timer: %m");
1047 static int manager_parse_config_file(Manager *m) {
1048 #if 0 /// elogind parses its own config file
1051 return config_parse_many(PKGSYSCONFDIR "/logind.conf",
1052 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
1054 config_item_perf_lookup, logind_gperf_lookup,
1057 const char* logind_conf = getenv("ELOGIND_CONF_FILE");
1062 logind_conf = PKGSYSCONFDIR "/logind.conf";
1064 return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
1065 config_item_perf_lookup, logind_gperf_lookup,
1066 false, false, true, m);
1070 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1071 Manager *m = userdata;
1074 manager_reset_config(m);
1075 r = manager_parse_config_file(m);
1077 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1079 log_info("Config file reloaded.");
1084 static int manager_startup(Manager *m) {
1090 Inhibitor *inhibitor;
1095 assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGHUP, -1) >= 0);
1097 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1099 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1101 /* Connect to console */
1102 r = manager_connect_console(m);
1106 /* Connect to udev */
1107 r = manager_connect_udev(m);
1109 return log_error_errno(r, "Failed to create udev watchers: %m");
1111 /* Connect to the bus */
1112 r = manager_connect_bus(m);
1116 /* Instantiate magic seat 0 */
1117 r = manager_add_seat(m, "seat0", &m->seat0);
1119 return log_error_errno(r, "Failed to add seat0: %m");
1121 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1123 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1125 /* Deserialize state */
1126 r = manager_enumerate_devices(m);
1128 log_warning_errno(r, "Device enumeration failed: %m");
1130 r = manager_enumerate_seats(m);
1132 log_warning_errno(r, "Seat enumeration failed: %m");
1134 r = manager_enumerate_users(m);
1136 log_warning_errno(r, "User enumeration failed: %m");
1138 r = manager_enumerate_sessions(m);
1140 log_warning_errno(r, "Session enumeration failed: %m");
1142 r = manager_enumerate_inhibitors(m);
1144 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1146 r = manager_enumerate_buttons(m);
1148 log_warning_errno(r, "Button enumeration failed: %m");
1150 /* Remove stale objects before we start them */
1151 manager_gc(m, false);
1153 /* Reserve the special reserved VT */
1154 #if 0 /// elogind does not support autospawning of vts
1155 manager_reserve_vt(m);
1158 /* And start everything */
1159 HASHMAP_FOREACH(seat, m->seats, i)
1162 HASHMAP_FOREACH(user, m->users, i)
1165 HASHMAP_FOREACH(session, m->sessions, i)
1166 session_start(session);
1168 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1169 inhibitor_start(inhibitor);
1171 HASHMAP_FOREACH(button, m->buttons, i)
1172 button_check_switches(button);
1174 manager_dispatch_idle_action(NULL, 0, m);
1179 static int manager_run(Manager *m) {
1185 r = sd_event_get_state(m->event);
1188 if (r == SD_EVENT_FINISHED)
1191 manager_gc(m, true);
1193 r = manager_dispatch_delayed(m, false);
1199 r = sd_event_run(m->event, (uint64_t) -1);
1205 int main(int argc, char *argv[]) {
1209 elogind_set_program_name(argv[0]);
1210 log_set_target(LOG_TARGET_AUTO);
1211 log_set_facility(LOG_AUTH);
1212 log_parse_environment();
1215 #ifdef ENABLE_DEBUG_ELOGIND
1216 log_set_max_level(LOG_DEBUG);
1217 #endif // ENABLE_DEBUG_ELOGIND
1222 log_error("This program takes no arguments.");
1227 r = mac_selinux_init();
1229 log_error_errno(r, "Could not initialize labelling: %m");
1233 /* Always create the directories people can create inotify
1234 * watches in. Note that some applications might check for the
1235 * existence of /run/systemd/seats/ to determine whether
1236 * logind is available, so please always make sure this check
1238 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1239 mkdir_label("/run/systemd/seats", 0755);
1240 mkdir_label("/run/systemd/users", 0755);
1241 mkdir_label("/run/systemd/sessions", 0755);
1243 r = mkdir_label("/run/systemd", 0755);
1244 if ( (r < 0) && (-EEXIST != r) )
1245 return log_error_errno(r, "Failed to create /run/systemd : %m");
1246 r = mkdir_label("/run/systemd/seats", 0755);
1247 if ( r < 0 && (-EEXIST != r) )
1248 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1249 r = mkdir_label("/run/systemd/users", 0755);
1250 if ( r < 0 && (-EEXIST != r) )
1251 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1252 r = mkdir_label("/run/systemd/sessions", 0755);
1253 if ( r < 0 && (-EEXIST != r) )
1254 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1255 r = mkdir_label("/run/systemd/machines", 0755);
1256 if ( r < 0 && (-EEXIST != r) )
1257 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1266 manager_parse_config_file(m);
1268 r = manager_startup(m);
1270 log_error_errno(r, "Failed to fully start up daemon: %m");
1274 log_debug("elogind running as pid "PID_FMT, getpid());
1278 "STATUS=Processing requests...");
1282 log_debug("elogind stopped as pid "PID_FMT, getpid());
1287 "STATUS=Shutting down...");
1292 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;