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) {
55 #if 0 /// elogind does not support autospawning of vts
60 m->inhibit_delay_max = 5 * USEC_PER_SEC;
61 m->handle_power_key = HANDLE_POWEROFF;
62 m->handle_suspend_key = HANDLE_SUSPEND;
63 m->handle_hibernate_key = HANDLE_HIBERNATE;
64 m->handle_lid_switch = HANDLE_SUSPEND;
65 m->handle_lid_switch_docked = HANDLE_IGNORE;
66 m->power_key_ignore_inhibited = false;
67 m->suspend_key_ignore_inhibited = false;
68 m->hibernate_key_ignore_inhibited = false;
69 m->lid_switch_ignore_inhibited = true;
71 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
73 m->idle_action_usec = 30 * USEC_PER_MINUTE;
74 m->idle_action = HANDLE_IGNORE;
76 m->runtime_dir_size = physical_memory_scale(10U, 100U); /* 10% */
77 m->user_tasks_max = system_tasks_max_scale(33U, 100U); /* 33% */
78 m->sessions_max = 8192;
79 m->inhibitors_max = 8192;
81 m->kill_user_processes = KILL_USER_PROCESSES;
83 m->kill_only_users = strv_free(m->kill_only_users);
84 m->kill_exclude_users = strv_free(m->kill_exclude_users);
85 #if 1 /// elogind needs an Add-On for sleep configuration
86 elogind_manager_reset_config(m);
90 static Manager *manager_new(void) {
98 m->console_active_fd = -1;
99 #if 0 /// UNNEEDED by elogind
100 m->reserve_vt_fd = -1;
103 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
105 m->devices = hashmap_new(&string_hash_ops);
106 m->seats = hashmap_new(&string_hash_ops);
107 m->sessions = hashmap_new(&string_hash_ops);
108 m->users = hashmap_new(NULL);
109 m->inhibitors = hashmap_new(&string_hash_ops);
110 m->buttons = hashmap_new(&string_hash_ops);
112 m->user_units = hashmap_new(&string_hash_ops);
113 m->session_units = hashmap_new(&string_hash_ops);
115 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
118 #if 1 /// elogind needs some more data
119 r = elogind_manager_new(m);
123 m->udev = udev_new();
127 r = sd_event_default(&m->event);
131 sd_event_set_watchdog(m->event, true);
133 manager_reset_config(m);
142 static void manager_free(Manager *m) {
153 while ((session = hashmap_first(m->sessions)))
154 session_free(session);
156 while ((u = hashmap_first(m->users)))
159 while ((d = hashmap_first(m->devices)))
162 while ((s = hashmap_first(m->seats)))
165 while ((i = hashmap_first(m->inhibitors)))
168 while ((b = hashmap_first(m->buttons)))
171 hashmap_free(m->devices);
172 hashmap_free(m->seats);
173 hashmap_free(m->sessions);
174 hashmap_free(m->users);
175 hashmap_free(m->inhibitors);
176 hashmap_free(m->buttons);
178 hashmap_free(m->user_units);
179 hashmap_free(m->session_units);
181 sd_event_source_unref(m->idle_action_event_source);
182 sd_event_source_unref(m->inhibit_timeout_source);
183 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
184 sd_event_source_unref(m->nologin_timeout_source);
185 sd_event_source_unref(m->wall_message_timeout_source);
187 sd_event_source_unref(m->console_active_event_source);
188 sd_event_source_unref(m->udev_seat_event_source);
189 sd_event_source_unref(m->udev_device_event_source);
190 sd_event_source_unref(m->udev_vcsa_event_source);
191 sd_event_source_unref(m->udev_button_event_source);
192 sd_event_source_unref(m->lid_switch_ignore_event_source);
194 safe_close(m->console_active_fd);
196 udev_monitor_unref(m->udev_seat_monitor);
197 udev_monitor_unref(m->udev_device_monitor);
198 udev_monitor_unref(m->udev_vcsa_monitor);
199 udev_monitor_unref(m->udev_button_monitor);
203 if (m->unlink_nologin)
204 (void) unlink("/run/nologin");
206 bus_verify_polkit_async_registry_free(m->polkit_registry);
208 sd_bus_unref(m->bus);
209 sd_event_unref(m->event);
211 #if 0 /// elogind does not support autospawning of vts
212 safe_close(m->reserve_vt_fd);
214 #if 1 /// elogind has to free its own data
215 elogind_manager_free(m);
218 strv_free(m->kill_only_users);
219 strv_free(m->kill_exclude_users);
221 free(m->scheduled_shutdown_type);
222 free(m->scheduled_shutdown_tty);
223 free(m->wall_message);
224 #if 0 /// UNNEEDED by elogind
230 static int manager_enumerate_devices(Manager *m) {
231 struct udev_list_entry *item = NULL, *first = NULL;
232 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
237 /* Loads devices from udev and creates seats for them as
240 e = udev_enumerate_new(m->udev);
244 r = udev_enumerate_add_match_tag(e, "master-of-seat");
248 r = udev_enumerate_add_match_is_initialized(e);
252 r = udev_enumerate_scan_devices(e);
256 first = udev_enumerate_get_list_entry(e);
257 udev_list_entry_foreach(item, first) {
258 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
261 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
265 k = manager_process_seat_device(m, d);
273 static int manager_enumerate_buttons(Manager *m) {
274 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
275 struct udev_list_entry *item = NULL, *first = NULL;
280 /* Loads buttons from udev */
282 if (m->handle_power_key == HANDLE_IGNORE &&
283 m->handle_suspend_key == HANDLE_IGNORE &&
284 m->handle_hibernate_key == HANDLE_IGNORE &&
285 m->handle_lid_switch == HANDLE_IGNORE &&
286 m->handle_lid_switch_docked == HANDLE_IGNORE)
289 e = udev_enumerate_new(m->udev);
293 r = udev_enumerate_add_match_subsystem(e, "input");
297 r = udev_enumerate_add_match_tag(e, "power-switch");
301 r = udev_enumerate_add_match_is_initialized(e);
305 r = udev_enumerate_scan_devices(e);
309 first = udev_enumerate_get_list_entry(e);
310 udev_list_entry_foreach(item, first) {
311 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
314 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
318 k = manager_process_button_device(m, d);
326 static int manager_enumerate_seats(Manager *m) {
327 _cleanup_closedir_ DIR *d = NULL;
333 /* This loads data about seats stored on disk, but does not
334 * actually create any seats. Removes data of seats that no
337 d = opendir("/run/systemd/seats");
342 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
345 FOREACH_DIRENT(de, d, return -errno) {
349 if (!dirent_is_file(de))
352 s = hashmap_get(m->seats, de->d_name);
354 unlinkat(dirfd(d), de->d_name, 0);
366 static int manager_enumerate_linger_users(Manager *m) {
367 _cleanup_closedir_ DIR *d = NULL;
373 d = opendir("/var/lib/systemd/linger");
378 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
381 FOREACH_DIRENT(de, d, return -errno) {
384 if (!dirent_is_file(de))
387 k = manager_add_user_by_name(m, de->d_name, NULL);
389 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
397 static int manager_enumerate_users(Manager *m) {
398 _cleanup_closedir_ DIR *d = NULL;
404 /* Add lingering users */
405 r = manager_enumerate_linger_users(m);
407 /* Read in user data stored on disk */
408 d = opendir("/run/systemd/users");
413 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
416 FOREACH_DIRENT(de, d, return -errno) {
419 if (!dirent_is_file(de))
422 k = manager_add_user_by_name(m, de->d_name, &u);
424 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
430 user_add_to_gc_queue(u);
440 static int manager_enumerate_sessions(Manager *m) {
441 _cleanup_closedir_ DIR *d = NULL;
447 /* Read in session data stored on disk */
448 d = opendir("/run/systemd/sessions");
453 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
456 FOREACH_DIRENT(de, d, return -errno) {
460 if (!dirent_is_file(de))
463 if (!session_id_valid(de->d_name)) {
464 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
469 k = manager_add_session(m, de->d_name, &s);
471 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
477 session_add_to_gc_queue(s);
487 static int manager_enumerate_inhibitors(Manager *m) {
488 _cleanup_closedir_ DIR *d = NULL;
494 d = opendir("/run/systemd/inhibit");
499 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
502 FOREACH_DIRENT(de, d, return -errno) {
506 if (!dirent_is_file(de))
509 k = manager_add_inhibitor(m, de->d_name, &i);
511 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
516 k = inhibitor_load(i);
524 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
525 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
526 Manager *m = userdata;
530 d = udev_monitor_receive_device(m->udev_seat_monitor);
534 manager_process_seat_device(m, d);
538 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
539 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
540 Manager *m = userdata;
544 d = udev_monitor_receive_device(m->udev_device_monitor);
548 manager_process_seat_device(m, d);
552 #if 0 /// UNNEEDED by elogind
553 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
554 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
555 Manager *m = userdata;
560 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
564 name = udev_device_get_sysname(d);
566 /* Whenever a VCSA device is removed try to reallocate our
567 * VTs, to make sure our auto VTs never go away. */
569 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
570 seat_preallocate_vts(m->seat0);
576 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
577 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
578 Manager *m = userdata;
582 d = udev_monitor_receive_device(m->udev_button_monitor);
586 manager_process_button_device(m, d);
590 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
591 Manager *m = userdata;
595 assert(m->console_active_fd == fd);
597 seat_read_active_vt(m->seat0);
601 #if 0 /// UNNEEDED by elogind
602 static int manager_reserve_vt(Manager *m) {
603 _cleanup_free_ char *p = NULL;
607 if (m->reserve_vt <= 0)
610 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
613 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
614 if (m->reserve_vt_fd < 0) {
616 /* Don't complain on VT-less systems */
618 log_warning_errno(errno, "Failed to pin reserved VT: %m");
626 static int manager_connect_bus(Manager *m) {
627 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
633 r = sd_bus_default_system(&m->bus);
635 return log_error_errno(r, "Failed to connect to system bus: %m");
637 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
639 return log_error_errno(r, "Failed to add manager object vtable: %m");
641 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
643 return log_error_errno(r, "Failed to add seat object vtable: %m");
645 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
647 return log_error_errno(r, "Failed to add seat enumerator: %m");
649 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
651 return log_error_errno(r, "Failed to add session object vtable: %m");
653 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
655 return log_error_errno(r, "Failed to add session enumerator: %m");
657 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
659 return log_error_errno(r, "Failed to add user object vtable: %m");
661 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
663 return log_error_errno(r, "Failed to add user enumerator: %m");
665 #if 0 /// elogind does not support systemd as PID 1
666 r = sd_bus_add_match(m->bus,
669 "sender='org.freedesktop.systemd1',"
670 "interface='org.freedesktop.systemd1.Manager',"
671 "member='JobRemoved',"
672 "path='/org/freedesktop/systemd1'",
673 match_job_removed, m);
675 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
677 r = sd_bus_add_match(m->bus,
680 "sender='org.freedesktop.systemd1',"
681 "interface='org.freedesktop.systemd1.Manager',"
682 "member='UnitRemoved',"
683 "path='/org/freedesktop/systemd1'",
684 match_unit_removed, m);
686 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
688 r = sd_bus_add_match(m->bus,
691 "sender='org.freedesktop.systemd1',"
692 "interface='org.freedesktop.DBus.Properties',"
693 "member='PropertiesChanged'",
694 match_properties_changed, m);
696 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
698 r = sd_bus_add_match(m->bus,
701 "sender='org.freedesktop.systemd1',"
702 "interface='org.freedesktop.systemd1.Manager',"
703 "member='Reloading',"
704 "path='/org/freedesktop/systemd1'",
707 return log_error_errno(r, "Failed to add match for Reloading: %m");
709 r = sd_bus_call_method(
711 "org.freedesktop.systemd1",
712 "/org/freedesktop/systemd1",
713 "org.freedesktop.systemd1.Manager",
718 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
723 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
725 return log_error_errno(r, "Failed to register name: %m");
727 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
729 return log_error_errno(r, "Failed to attach bus to event loop: %m");
731 #if 0 /// elogind has to setup its release agent
734 elogind_bus_setup_system(m);
735 r = elogind_setup_cgroups_agent(m);
741 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
743 Session *active, *iter;
746 * We got a VT-switch signal and we have to acknowledge it immediately.
747 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
748 * old user-space might run multiple sessions on a single VT, *sigh*.
749 * Therefore, we have to iterate all sessions and find one with a vtfd
750 * on the requested VT.
751 * As only VTs with active controllers have VT_PROCESS set, our current
752 * notion of the active VT might be wrong (for instance if the switch
753 * happens while we setup VT_PROCESS). Therefore, read the current VT
754 * first and then use s->active->vtnr as reference. Note that this is
755 * not racy, as no further VT-switch can happen as long as we're in
756 * synchronous VT_PROCESS mode.
760 seat_read_active_vt(m->seat0);
762 active = m->seat0->active;
763 if (!active || active->vtnr < 1) {
764 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
768 if (active->vtfd >= 0) {
769 session_leave_vt(active);
771 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
772 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
773 session_leave_vt(iter);
782 static int manager_connect_console(Manager *m) {
786 assert(m->console_active_fd < 0);
788 /* On certain architectures (S390 and Xen, and containers),
789 /dev/tty0 does not exist, so don't fail if we can't open
791 if (access("/dev/tty0", F_OK) < 0)
794 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
795 if (m->console_active_fd < 0) {
797 /* On some systems the device node /dev/tty0 may exist
798 * even though /sys/class/tty/tty0 does not. */
802 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
805 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
807 log_error("Failed to watch foreground console");
812 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
813 * as VT-acquire signal. We ignore any acquire-events (yes, we still
814 * have to provide a valid signal-number for it!) and acknowledge all
815 * release events immediately.
818 if (SIGRTMIN + 1 > SIGRTMAX) {
819 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
823 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
824 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
826 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
833 static int manager_connect_udev(Manager *m) {
837 assert(!m->udev_seat_monitor);
838 assert(!m->udev_device_monitor);
839 assert(!m->udev_vcsa_monitor);
840 assert(!m->udev_button_monitor);
842 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
843 if (!m->udev_seat_monitor)
846 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
850 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
854 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);
858 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
859 if (!m->udev_device_monitor)
862 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
866 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
870 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
874 r = udev_monitor_enable_receiving(m->udev_device_monitor);
878 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);
882 /* Don't watch keys if nobody cares */
883 if (m->handle_power_key != HANDLE_IGNORE ||
884 m->handle_suspend_key != HANDLE_IGNORE ||
885 m->handle_hibernate_key != HANDLE_IGNORE ||
886 m->handle_lid_switch != HANDLE_IGNORE ||
887 m->handle_lid_switch_docked != HANDLE_IGNORE) {
889 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
890 if (!m->udev_button_monitor)
893 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
897 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
901 r = udev_monitor_enable_receiving(m->udev_button_monitor);
905 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);
910 /* Don't bother watching VCSA devices, if nobody cares */
911 #if 0 /// elogind does not support autospawning of vts
912 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
914 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
915 if (!m->udev_vcsa_monitor)
918 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
922 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
926 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);
935 static void manager_gc(Manager *m, bool drop_not_started) {
942 while ((seat = m->seat_gc_queue)) {
943 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
944 seat->in_gc_queue = false;
946 if (!seat_check_gc(seat, drop_not_started)) {
947 seat_stop(seat, false);
952 while ((session = m->session_gc_queue)) {
953 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
954 session->in_gc_queue = false;
956 /* First, if we are not closing yet, initiate stopping */
957 if (!session_check_gc(session, drop_not_started) &&
958 session_get_state(session) != SESSION_CLOSING)
959 session_stop(session, false);
961 /* Normally, this should make the session referenced
962 * again, if it doesn't then let's get rid of it
964 if (!session_check_gc(session, drop_not_started)) {
965 session_finalize(session);
966 session_free(session);
970 while ((user = m->user_gc_queue)) {
971 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
972 user->in_gc_queue = false;
974 /* First step: queue stop jobs */
975 if (!user_check_gc(user, drop_not_started))
976 user_stop(user, false);
978 /* Second step: finalize user */
979 if (!user_check_gc(user, drop_not_started)) {
986 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
987 Manager *m = userdata;
988 struct dual_timestamp since;
994 if (m->idle_action == HANDLE_IGNORE ||
995 m->idle_action_usec <= 0)
998 n = now(CLOCK_MONOTONIC);
1000 r = manager_get_idle_hint(m, &since);
1002 /* Not idle. Let's check if after a timeout it might be idle then. */
1003 elapse = n + m->idle_action_usec;
1005 /* Idle! Let's see if it's time to do something, or if
1006 * we shall sleep for longer. */
1008 if (n >= since.monotonic + m->idle_action_usec &&
1009 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1010 log_info("System idle. Taking action.");
1012 manager_handle_action(m, 0, m->idle_action, false, false);
1013 m->idle_action_not_before_usec = n;
1016 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1019 if (!m->idle_action_event_source) {
1021 r = sd_event_add_time(
1023 &m->idle_action_event_source,
1025 elapse, USEC_PER_SEC*30,
1026 manager_dispatch_idle_action, m);
1028 return log_error_errno(r, "Failed to add idle event source: %m");
1030 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1032 return log_error_errno(r, "Failed to set idle event source priority: %m");
1034 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1036 return log_error_errno(r, "Failed to set idle event timer: %m");
1038 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1040 return log_error_errno(r, "Failed to enable idle event timer: %m");
1046 static int manager_parse_config_file(Manager *m) {
1047 #if 0 /// elogind parses its own config file
1050 return config_parse_many(PKGSYSCONFDIR "/logind.conf",
1051 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
1053 config_item_perf_lookup, logind_gperf_lookup,
1056 const char* logind_conf = getenv("ELOGIND_CONF_FILE");
1061 logind_conf = PKGSYSCONFDIR "/logind.conf";
1063 return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
1064 config_item_perf_lookup, logind_gperf_lookup,
1065 false, false, true, m);
1069 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1070 Manager *m = userdata;
1073 manager_reset_config(m);
1074 r = manager_parse_config_file(m);
1076 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1078 log_info("Config file reloaded.");
1083 static int manager_startup(Manager *m) {
1089 Inhibitor *inhibitor;
1094 assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGHUP, -1) >= 0);
1096 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1098 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1100 /* Connect to console */
1101 r = manager_connect_console(m);
1105 /* Connect to udev */
1106 r = manager_connect_udev(m);
1108 return log_error_errno(r, "Failed to create udev watchers: %m");
1110 /* Connect to the bus */
1111 r = manager_connect_bus(m);
1115 /* Instantiate magic seat 0 */
1116 r = manager_add_seat(m, "seat0", &m->seat0);
1118 return log_error_errno(r, "Failed to add seat0: %m");
1120 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1122 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1124 /* Deserialize state */
1125 r = manager_enumerate_devices(m);
1127 log_warning_errno(r, "Device enumeration failed: %m");
1129 r = manager_enumerate_seats(m);
1131 log_warning_errno(r, "Seat enumeration failed: %m");
1133 r = manager_enumerate_users(m);
1135 log_warning_errno(r, "User enumeration failed: %m");
1137 r = manager_enumerate_sessions(m);
1139 log_warning_errno(r, "Session enumeration failed: %m");
1141 r = manager_enumerate_inhibitors(m);
1143 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1145 r = manager_enumerate_buttons(m);
1147 log_warning_errno(r, "Button enumeration failed: %m");
1149 /* Remove stale objects before we start them */
1150 manager_gc(m, false);
1152 /* Reserve the special reserved VT */
1153 #if 0 /// elogind does not support autospawning of vts
1154 manager_reserve_vt(m);
1157 /* And start everything */
1158 HASHMAP_FOREACH(seat, m->seats, i)
1161 HASHMAP_FOREACH(user, m->users, i)
1164 HASHMAP_FOREACH(session, m->sessions, i)
1165 session_start(session);
1167 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1168 inhibitor_start(inhibitor);
1170 HASHMAP_FOREACH(button, m->buttons, i)
1171 button_check_switches(button);
1173 manager_dispatch_idle_action(NULL, 0, m);
1178 static int manager_run(Manager *m) {
1184 r = sd_event_get_state(m->event);
1187 if (r == SD_EVENT_FINISHED)
1190 manager_gc(m, true);
1192 r = manager_dispatch_delayed(m, false);
1198 r = sd_event_run(m->event, (uint64_t) -1);
1204 int main(int argc, char *argv[]) {
1208 elogind_set_program_name(argv[0]);
1209 log_set_target(LOG_TARGET_AUTO);
1210 log_set_facility(LOG_AUTH);
1211 log_parse_environment();
1213 #ifdef ENABLE_DEBUG_ELOGIND
1214 log_set_max_level(LOG_DEBUG);
1215 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
1216 #endif // ENABLE_DEBUG_ELOGIND
1224 log_error("This program takes no arguments.");
1229 r = mac_selinux_init();
1231 log_error_errno(r, "Could not initialize labelling: %m");
1235 /* Always create the directories people can create inotify
1236 * watches in. Note that some applications might check for the
1237 * existence of /run/systemd/seats/ to determine whether
1238 * logind is available, so please always make sure this check
1240 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1241 mkdir_label("/run/systemd/seats", 0755);
1242 mkdir_label("/run/systemd/users", 0755);
1243 mkdir_label("/run/systemd/sessions", 0755);
1245 r = mkdir_label("/run/systemd", 0755);
1246 if ( (r < 0) && (-EEXIST != r) )
1247 return log_error_errno(r, "Failed to create /run/systemd : %m");
1248 r = mkdir_label("/run/systemd/seats", 0755);
1249 if ( r < 0 && (-EEXIST != r) )
1250 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1251 r = mkdir_label("/run/systemd/users", 0755);
1252 if ( r < 0 && (-EEXIST != r) )
1253 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1254 r = mkdir_label("/run/systemd/sessions", 0755);
1255 if ( r < 0 && (-EEXIST != r) )
1256 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1257 r = mkdir_label("/run/systemd/machines", 0755);
1258 if ( r < 0 && (-EEXIST != r) )
1259 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1268 manager_parse_config_file(m);
1270 r = manager_startup(m);
1272 log_error_errno(r, "Failed to fully start up daemon: %m");
1276 log_debug("elogind running as pid "PID_FMT, getpid());
1280 "STATUS=Processing requests...");
1284 log_debug("elogind stopped as pid "PID_FMT, getpid());
1289 "STATUS=Shutting down...");
1293 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;