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) {
156 while ((session = hashmap_first(m->sessions)))
157 session_free(session);
159 while ((u = hashmap_first(m->users)))
162 while ((d = hashmap_first(m->devices)))
165 while ((s = hashmap_first(m->seats)))
168 while ((i = hashmap_first(m->inhibitors)))
171 while ((b = hashmap_first(m->buttons)))
174 hashmap_free(m->devices);
175 hashmap_free(m->seats);
176 hashmap_free(m->sessions);
177 hashmap_free(m->users);
178 hashmap_free(m->inhibitors);
179 hashmap_free(m->buttons);
181 hashmap_free(m->user_units);
182 hashmap_free(m->session_units);
184 sd_event_source_unref(m->idle_action_event_source);
185 sd_event_source_unref(m->inhibit_timeout_source);
186 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
187 sd_event_source_unref(m->nologin_timeout_source);
188 sd_event_source_unref(m->wall_message_timeout_source);
190 sd_event_source_unref(m->console_active_event_source);
191 sd_event_source_unref(m->udev_seat_event_source);
192 sd_event_source_unref(m->udev_device_event_source);
193 sd_event_source_unref(m->udev_vcsa_event_source);
194 sd_event_source_unref(m->udev_button_event_source);
195 sd_event_source_unref(m->lid_switch_ignore_event_source);
197 safe_close(m->console_active_fd);
199 udev_monitor_unref(m->udev_seat_monitor);
200 udev_monitor_unref(m->udev_device_monitor);
201 udev_monitor_unref(m->udev_vcsa_monitor);
202 udev_monitor_unref(m->udev_button_monitor);
206 if (m->unlink_nologin)
207 (void) unlink("/run/nologin");
209 bus_verify_polkit_async_registry_free(m->polkit_registry);
211 sd_bus_unref(m->bus);
212 sd_event_unref(m->event);
214 #if 0 /// elogind does not support autospawning of vts
215 safe_close(m->reserve_vt_fd);
218 #if 1 /// elogind has to free its own data
219 elogind_manager_free(m);
222 strv_free(m->kill_only_users);
223 strv_free(m->kill_exclude_users);
225 free(m->scheduled_shutdown_type);
226 free(m->scheduled_shutdown_tty);
227 free(m->wall_message);
228 #if 0 /// UNNEEDED by elogind
234 static int manager_enumerate_devices(Manager *m) {
235 struct udev_list_entry *item = NULL, *first = NULL;
236 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
241 /* Loads devices from udev and creates seats for them as
244 e = udev_enumerate_new(m->udev);
248 r = udev_enumerate_add_match_tag(e, "master-of-seat");
252 r = udev_enumerate_add_match_is_initialized(e);
256 r = udev_enumerate_scan_devices(e);
260 first = udev_enumerate_get_list_entry(e);
261 udev_list_entry_foreach(item, first) {
262 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
265 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
269 k = manager_process_seat_device(m, d);
277 static int manager_enumerate_buttons(Manager *m) {
278 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
279 struct udev_list_entry *item = NULL, *first = NULL;
284 /* Loads buttons from udev */
286 if (m->handle_power_key == HANDLE_IGNORE &&
287 m->handle_suspend_key == HANDLE_IGNORE &&
288 m->handle_hibernate_key == HANDLE_IGNORE &&
289 m->handle_lid_switch == HANDLE_IGNORE &&
290 m->handle_lid_switch_docked == HANDLE_IGNORE)
293 e = udev_enumerate_new(m->udev);
297 r = udev_enumerate_add_match_subsystem(e, "input");
301 r = udev_enumerate_add_match_tag(e, "power-switch");
305 r = udev_enumerate_add_match_is_initialized(e);
309 r = udev_enumerate_scan_devices(e);
313 first = udev_enumerate_get_list_entry(e);
314 udev_list_entry_foreach(item, first) {
315 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
318 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
322 k = manager_process_button_device(m, d);
330 static int manager_enumerate_seats(Manager *m) {
331 _cleanup_closedir_ DIR *d = NULL;
337 /* This loads data about seats stored on disk, but does not
338 * actually create any seats. Removes data of seats that no
341 d = opendir("/run/systemd/seats");
346 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
349 FOREACH_DIRENT(de, d, return -errno) {
353 if (!dirent_is_file(de))
356 s = hashmap_get(m->seats, de->d_name);
358 unlinkat(dirfd(d), de->d_name, 0);
370 static int manager_enumerate_linger_users(Manager *m) {
371 _cleanup_closedir_ DIR *d = NULL;
377 d = opendir("/var/lib/systemd/linger");
382 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
385 FOREACH_DIRENT(de, d, return -errno) {
388 if (!dirent_is_file(de))
391 k = manager_add_user_by_name(m, de->d_name, NULL);
393 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
401 static int manager_enumerate_users(Manager *m) {
402 _cleanup_closedir_ DIR *d = NULL;
408 /* Add lingering users */
409 r = manager_enumerate_linger_users(m);
411 /* Read in user data stored on disk */
412 d = opendir("/run/systemd/users");
417 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
420 FOREACH_DIRENT(de, d, return -errno) {
423 if (!dirent_is_file(de))
426 k = manager_add_user_by_name(m, de->d_name, &u);
428 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
434 user_add_to_gc_queue(u);
444 static int manager_enumerate_sessions(Manager *m) {
445 _cleanup_closedir_ DIR *d = NULL;
451 /* Read in session data stored on disk */
452 d = opendir("/run/systemd/sessions");
457 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
460 FOREACH_DIRENT(de, d, return -errno) {
464 if (!dirent_is_file(de))
467 if (!session_id_valid(de->d_name)) {
468 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
473 k = manager_add_session(m, de->d_name, &s);
475 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
481 session_add_to_gc_queue(s);
491 static int manager_enumerate_inhibitors(Manager *m) {
492 _cleanup_closedir_ DIR *d = NULL;
498 d = opendir("/run/systemd/inhibit");
503 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
506 FOREACH_DIRENT(de, d, return -errno) {
510 if (!dirent_is_file(de))
513 k = manager_add_inhibitor(m, de->d_name, &i);
515 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
520 k = inhibitor_load(i);
528 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
529 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
530 Manager *m = userdata;
534 d = udev_monitor_receive_device(m->udev_seat_monitor);
538 manager_process_seat_device(m, d);
542 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
543 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
544 Manager *m = userdata;
548 d = udev_monitor_receive_device(m->udev_device_monitor);
552 manager_process_seat_device(m, d);
556 #if 0 /// UNNEEDED by elogind
557 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
558 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
559 Manager *m = userdata;
564 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
568 name = udev_device_get_sysname(d);
570 /* Whenever a VCSA device is removed try to reallocate our
571 * VTs, to make sure our auto VTs never go away. */
573 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
574 seat_preallocate_vts(m->seat0);
580 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
581 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
582 Manager *m = userdata;
586 d = udev_monitor_receive_device(m->udev_button_monitor);
590 manager_process_button_device(m, d);
594 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
595 Manager *m = userdata;
599 assert(m->console_active_fd == fd);
601 seat_read_active_vt(m->seat0);
605 #if 0 /// UNNEEDED by elogind
606 static int manager_reserve_vt(Manager *m) {
607 _cleanup_free_ char *p = NULL;
611 if (m->reserve_vt <= 0)
614 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
617 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
618 if (m->reserve_vt_fd < 0) {
620 /* Don't complain on VT-less systems */
622 log_warning_errno(errno, "Failed to pin reserved VT: %m");
630 static int manager_connect_bus(Manager *m) {
631 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
637 r = sd_bus_default_system(&m->bus);
639 return log_error_errno(r, "Failed to connect to system bus: %m");
641 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
643 return log_error_errno(r, "Failed to add manager object vtable: %m");
645 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
647 return log_error_errno(r, "Failed to add seat object vtable: %m");
649 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
651 return log_error_errno(r, "Failed to add seat enumerator: %m");
653 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
655 return log_error_errno(r, "Failed to add session object vtable: %m");
657 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
659 return log_error_errno(r, "Failed to add session enumerator: %m");
661 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
663 return log_error_errno(r, "Failed to add user object vtable: %m");
665 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
667 return log_error_errno(r, "Failed to add user enumerator: %m");
669 #if 0 /// elogind does not support systemd as PID 1
670 r = sd_bus_add_match(m->bus,
673 "sender='org.freedesktop.systemd1',"
674 "interface='org.freedesktop.systemd1.Manager',"
675 "member='JobRemoved',"
676 "path='/org/freedesktop/systemd1'",
677 match_job_removed, m);
679 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
681 r = sd_bus_add_match(m->bus,
684 "sender='org.freedesktop.systemd1',"
685 "interface='org.freedesktop.systemd1.Manager',"
686 "member='UnitRemoved',"
687 "path='/org/freedesktop/systemd1'",
688 match_unit_removed, m);
690 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
692 r = sd_bus_add_match(m->bus,
695 "sender='org.freedesktop.systemd1',"
696 "interface='org.freedesktop.DBus.Properties',"
697 "member='PropertiesChanged'",
698 match_properties_changed, m);
700 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
702 r = sd_bus_add_match(m->bus,
705 "sender='org.freedesktop.systemd1',"
706 "interface='org.freedesktop.systemd1.Manager',"
707 "member='Reloading',"
708 "path='/org/freedesktop/systemd1'",
711 return log_error_errno(r, "Failed to add match for Reloading: %m");
713 r = sd_bus_call_method(
715 "org.freedesktop.systemd1",
716 "/org/freedesktop/systemd1",
717 "org.freedesktop.systemd1.Manager",
722 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
727 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
729 return log_error_errno(r, "Failed to register name: %m");
731 r = sd_bus_attach_event(m->bus, m->event, SD_EVENT_PRIORITY_NORMAL);
733 return log_error_errno(r, "Failed to attach bus to event loop: %m");
735 #if 1 /// elogind has to setup its release agent
736 elogind_bus_setup_system(m);
737 r = elogind_setup_cgroups_agent(m);
743 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
745 Session *active, *iter;
748 * We got a VT-switch signal and we have to acknowledge it immediately.
749 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
750 * old user-space might run multiple sessions on a single VT, *sigh*.
751 * Therefore, we have to iterate all sessions and find one with a vtfd
752 * on the requested VT.
753 * As only VTs with active controllers have VT_PROCESS set, our current
754 * notion of the active VT might be wrong (for instance if the switch
755 * happens while we setup VT_PROCESS). Therefore, read the current VT
756 * first and then use s->active->vtnr as reference. Note that this is
757 * not racy, as no further VT-switch can happen as long as we're in
758 * synchronous VT_PROCESS mode.
762 seat_read_active_vt(m->seat0);
764 active = m->seat0->active;
765 if (!active || active->vtnr < 1) {
766 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
770 if (active->vtfd >= 0) {
771 session_leave_vt(active);
773 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
774 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
775 session_leave_vt(iter);
784 static int manager_connect_console(Manager *m) {
788 assert(m->console_active_fd < 0);
790 /* On certain architectures (S390 and Xen, and containers),
791 /dev/tty0 does not exist, so don't fail if we can't open
793 if (access("/dev/tty0", F_OK) < 0)
796 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
797 if (m->console_active_fd < 0) {
799 /* On some systems the device node /dev/tty0 may exist
800 * even though /sys/class/tty/tty0 does not. */
804 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
807 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
809 log_error("Failed to watch foreground console");
814 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
815 * as VT-acquire signal. We ignore any acquire-events (yes, we still
816 * have to provide a valid signal-number for it!) and acknowledge all
817 * release events immediately.
820 if (SIGRTMIN + 1 > SIGRTMAX) {
821 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
825 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
826 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
828 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
835 static int manager_connect_udev(Manager *m) {
839 assert(!m->udev_seat_monitor);
840 assert(!m->udev_device_monitor);
841 assert(!m->udev_vcsa_monitor);
842 assert(!m->udev_button_monitor);
844 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
845 if (!m->udev_seat_monitor)
848 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
852 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
856 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);
860 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
861 if (!m->udev_device_monitor)
864 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
868 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
872 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
876 r = udev_monitor_enable_receiving(m->udev_device_monitor);
880 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);
884 /* Don't watch keys if nobody cares */
885 if (m->handle_power_key != HANDLE_IGNORE ||
886 m->handle_suspend_key != HANDLE_IGNORE ||
887 m->handle_hibernate_key != HANDLE_IGNORE ||
888 m->handle_lid_switch != HANDLE_IGNORE ||
889 m->handle_lid_switch_docked != HANDLE_IGNORE) {
891 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
892 if (!m->udev_button_monitor)
895 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
899 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
903 r = udev_monitor_enable_receiving(m->udev_button_monitor);
907 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);
912 /* Don't bother watching VCSA devices, if nobody cares */
913 #if 0 /// elogind does not support autospawning of vts
914 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
916 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
917 if (!m->udev_vcsa_monitor)
920 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
924 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
928 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);
937 static void manager_gc(Manager *m, bool drop_not_started) {
944 while ((seat = m->seat_gc_queue)) {
945 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
946 seat->in_gc_queue = false;
948 if (!seat_check_gc(seat, drop_not_started)) {
949 seat_stop(seat, false);
954 while ((session = m->session_gc_queue)) {
955 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
956 session->in_gc_queue = false;
958 /* First, if we are not closing yet, initiate stopping */
959 if (!session_check_gc(session, drop_not_started) &&
960 session_get_state(session) != SESSION_CLOSING)
961 session_stop(session, false);
963 /* Normally, this should make the session referenced
964 * again, if it doesn't then let's get rid of it
966 if (!session_check_gc(session, drop_not_started)) {
967 session_finalize(session);
968 session_free(session);
972 while ((user = m->user_gc_queue)) {
973 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
974 user->in_gc_queue = false;
976 /* First step: queue stop jobs */
977 if (!user_check_gc(user, drop_not_started))
978 user_stop(user, false);
980 /* Second step: finalize user */
981 if (!user_check_gc(user, drop_not_started)) {
988 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
989 Manager *m = userdata;
990 struct dual_timestamp since;
996 if (m->idle_action == HANDLE_IGNORE ||
997 m->idle_action_usec <= 0)
1000 n = now(CLOCK_MONOTONIC);
1002 r = manager_get_idle_hint(m, &since);
1004 /* Not idle. Let's check if after a timeout it might be idle then. */
1005 elapse = n + m->idle_action_usec;
1007 /* Idle! Let's see if it's time to do something, or if
1008 * we shall sleep for longer. */
1010 if (n >= since.monotonic + m->idle_action_usec &&
1011 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1012 log_info("System idle. Taking action.");
1014 manager_handle_action(m, 0, m->idle_action, false, false);
1015 m->idle_action_not_before_usec = n;
1018 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1021 if (!m->idle_action_event_source) {
1023 r = sd_event_add_time(
1025 &m->idle_action_event_source,
1027 elapse, USEC_PER_SEC*30,
1028 manager_dispatch_idle_action, m);
1030 return log_error_errno(r, "Failed to add idle event source: %m");
1032 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1034 return log_error_errno(r, "Failed to set idle event source priority: %m");
1036 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1038 return log_error_errno(r, "Failed to set idle event timer: %m");
1040 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1042 return log_error_errno(r, "Failed to enable idle event timer: %m");
1048 static int manager_parse_config_file(Manager *m) {
1049 #if 0 /// elogind parses its own config file
1052 return config_parse_many(PKGSYSCONFDIR "/logind.conf",
1053 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
1055 config_item_perf_lookup, logind_gperf_lookup,
1058 const char* logind_conf = getenv("ELOGIND_CONF_FILE");
1063 logind_conf = PKGSYSCONFDIR "/logind.conf";
1065 return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
1066 config_item_perf_lookup, logind_gperf_lookup,
1067 false, false, true, m);
1071 static int manager_dispatch_reload_signal(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
1072 Manager *m = userdata;
1075 manager_reset_config(m);
1076 r = manager_parse_config_file(m);
1078 log_warning_errno(r, "Failed to parse config file, using defaults: %m");
1080 log_info("Config file reloaded.");
1085 static int manager_startup(Manager *m) {
1091 Inhibitor *inhibitor;
1096 assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGHUP, -1) >= 0);
1098 r = sd_event_add_signal(m->event, NULL, SIGHUP, manager_dispatch_reload_signal, m);
1100 return log_error_errno(r, "Failed to register SIGHUP handler: %m");
1102 /* Connect to console */
1103 r = manager_connect_console(m);
1107 /* Connect to udev */
1108 r = manager_connect_udev(m);
1110 return log_error_errno(r, "Failed to create udev watchers: %m");
1112 /* Connect to the bus */
1113 r = manager_connect_bus(m);
1117 /* Instantiate magic seat 0 */
1118 r = manager_add_seat(m, "seat0", &m->seat0);
1120 return log_error_errno(r, "Failed to add seat0: %m");
1122 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1124 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1126 /* Deserialize state */
1127 r = manager_enumerate_devices(m);
1129 log_warning_errno(r, "Device enumeration failed: %m");
1131 r = manager_enumerate_seats(m);
1133 log_warning_errno(r, "Seat enumeration failed: %m");
1135 r = manager_enumerate_users(m);
1137 log_warning_errno(r, "User enumeration failed: %m");
1139 r = manager_enumerate_sessions(m);
1141 log_warning_errno(r, "Session enumeration failed: %m");
1143 r = manager_enumerate_inhibitors(m);
1145 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1147 r = manager_enumerate_buttons(m);
1149 log_warning_errno(r, "Button enumeration failed: %m");
1151 /* Remove stale objects before we start them */
1152 manager_gc(m, false);
1154 /* Reserve the special reserved VT */
1155 #if 0 /// elogind does not support autospawning of vts
1156 manager_reserve_vt(m);
1159 /* And start everything */
1160 HASHMAP_FOREACH(seat, m->seats, i)
1163 HASHMAP_FOREACH(user, m->users, i)
1166 HASHMAP_FOREACH(session, m->sessions, i)
1167 session_start(session);
1169 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1170 inhibitor_start(inhibitor);
1172 HASHMAP_FOREACH(button, m->buttons, i)
1173 button_check_switches(button);
1175 manager_dispatch_idle_action(NULL, 0, m);
1180 static int manager_run(Manager *m) {
1186 r = sd_event_get_state(m->event);
1189 if (r == SD_EVENT_FINISHED)
1192 manager_gc(m, true);
1194 r = manager_dispatch_delayed(m, false);
1200 r = sd_event_run(m->event, (uint64_t) -1);
1206 int main(int argc, char *argv[]) {
1210 elogind_set_program_name(argv[0]);
1211 log_set_target(LOG_TARGET_AUTO);
1212 log_set_facility(LOG_AUTH);
1213 log_parse_environment();
1216 #ifdef ENABLE_DEBUG_ELOGIND
1217 log_set_max_level(LOG_DEBUG);
1218 #endif // ENABLE_DEBUG_ELOGIND
1223 log_error("This program takes no arguments.");
1228 r = mac_selinux_init();
1230 log_error_errno(r, "Could not initialize labelling: %m");
1234 /* Always create the directories people can create inotify
1235 * watches in. Note that some applications might check for the
1236 * existence of /run/systemd/seats/ to determine whether
1237 * logind is available, so please always make sure this check
1239 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1240 mkdir_label("/run/systemd/seats", 0755);
1241 mkdir_label("/run/systemd/users", 0755);
1242 mkdir_label("/run/systemd/sessions", 0755);
1244 r = mkdir_label("/run/systemd", 0755);
1245 if ( (r < 0) && (-EEXIST != r) )
1246 return log_error_errno(r, "Failed to create /run/systemd : %m");
1247 r = mkdir_label("/run/systemd/seats", 0755);
1248 if ( r < 0 && (-EEXIST != r) )
1249 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1250 r = mkdir_label("/run/systemd/users", 0755);
1251 if ( r < 0 && (-EEXIST != r) )
1252 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1253 r = mkdir_label("/run/systemd/sessions", 0755);
1254 if ( r < 0 && (-EEXIST != r) )
1255 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1256 r = mkdir_label("/run/systemd/machines", 0755);
1257 if ( r < 0 && (-EEXIST != r) )
1258 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1267 manager_parse_config_file(m);
1269 r = manager_startup(m);
1271 log_error_errno(r, "Failed to fully start up daemon: %m");
1275 log_debug("elogind running as pid "PID_FMT, getpid());
1279 "STATUS=Processing requests...");
1283 log_debug("elogind stopped as pid "PID_FMT, getpid());
1288 "STATUS=Shutting down...");
1293 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;