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/>.
26 #include "sd-daemon.h"
28 #include "alloc-util.h"
29 #include "bus-error.h"
31 #include "conf-parser.h"
33 #include "dirent-util.h"
35 #include "formats-util.h"
37 #include "selinux-util.h"
38 #include "signal-util.h"
40 #include "udev-util.h"
42 /// additional includes elogind needs
43 #include "cgroup.h" // From src/core/
45 #include "mount-setup.h" // From src/core
46 #include "musl_missing.h"
48 static void manager_free(Manager *m);
49 static int manager_parse_config_file(Manager *m);
51 static Manager *manager_new(void) {
52 #ifdef ENABLE_DEBUG_ELOGIND
54 #endif // ENABLE_DEBUG_ELOGIND
62 m->pin_cgroupfs_fd = -1;
64 m->console_active_fd = -1;
66 #if 0 /// elogind does not support autospawning of vts
67 m->reserve_vt_fd = -1;
73 m->inhibit_delay_max = 5 * USEC_PER_SEC;
74 m->handle_power_key = HANDLE_POWEROFF;
75 m->handle_suspend_key = HANDLE_SUSPEND;
76 m->handle_hibernate_key = HANDLE_HIBERNATE;
77 m->handle_lid_switch = HANDLE_SUSPEND;
78 m->handle_lid_switch_docked = HANDLE_IGNORE;
79 m->lid_switch_ignore_inhibited = true;
80 m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
82 m->idle_action_usec = 30 * USEC_PER_MINUTE;
83 m->idle_action = HANDLE_IGNORE;
84 m->idle_action_not_before_usec = now(CLOCK_MONOTONIC);
86 m->runtime_dir_size = PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
87 m->user_tasks_max = UINT64_C(12288);
89 m->devices = hashmap_new(&string_hash_ops);
90 m->seats = hashmap_new(&string_hash_ops);
91 m->sessions = hashmap_new(&string_hash_ops);
92 m->users = hashmap_new(NULL);
93 m->inhibitors = hashmap_new(&string_hash_ops);
94 m->buttons = hashmap_new(&string_hash_ops);
96 m->user_units = hashmap_new(&string_hash_ops);
97 m->session_units = hashmap_new(&string_hash_ops);
99 m->running_as = MANAGER_SYSTEM;
102 if (!m->devices || !m->seats || !m->sessions || !m->users || !m->inhibitors || !m->buttons || !m->user_units || !m->session_units)
105 m->kill_exclude_users = strv_new("root", NULL);
106 if (!m->kill_exclude_users)
109 /* If elogind should be its own controller, mount its cgroup */
110 if (streq(SYSTEMD_CGROUP_CONTROLLER, "name=elogind")) {
111 r = mount_setup(true);
117 r = manager_setup_cgroup(m);
121 m->suspend_mode = NULL;
122 m->suspend_state = NULL;
123 m->hibernate_mode = NULL;
124 m->hibernate_state = NULL;
125 m->hybrid_sleep_mode = NULL;
126 m->hybrid_sleep_state = NULL;
128 manager_parse_config_file(m);
130 /* Set default Sleep config if not already set by logind.conf */
131 if (!m->suspend_state) {
132 m->suspend_state = strv_new("mem", "standby", "freeze", NULL);
133 if (!m->suspend_state)
136 if (!m->hibernate_mode) {
137 m->hibernate_mode = strv_new("platform", "shutdown", NULL);
138 if (!m->hibernate_mode)
141 if (!m->hibernate_state) {
142 m->hibernate_state = strv_new("disk", NULL);
143 if (!m->hibernate_state)
146 if (!m->hybrid_sleep_mode) {
147 m->hybrid_sleep_mode = strv_new("suspend", "platform", "shutdown", NULL);
148 if (!m->hybrid_sleep_mode)
151 if (!m->hybrid_sleep_state) {
152 m->hybrid_sleep_state = strv_new("disk", NULL);
153 if (!m->hybrid_sleep_state)
157 #ifdef ENABLE_DEBUG_ELOGIND
159 while (m->suspend_mode && m->suspend_mode[++dbg_cnt])
160 log_debug_elogind("suspend_mode[%d] = %s",
161 dbg_cnt, m->suspend_mode[dbg_cnt]);
163 while (m->suspend_state[++dbg_cnt])
164 log_debug_elogind("suspend_state[%d] = %s",
165 dbg_cnt, m->suspend_state[dbg_cnt]);
167 while (m->hibernate_mode[++dbg_cnt])
168 log_debug_elogind("hibernate_mode[%d] = %s",
169 dbg_cnt, m->hibernate_mode[dbg_cnt]);
171 while (m->hibernate_state[++dbg_cnt])
172 log_debug_elogind("hibernate_state[%d] = %s",
173 dbg_cnt, m->hibernate_state[dbg_cnt]);
175 while (m->hybrid_sleep_mode[++dbg_cnt])
176 log_debug_elogind("hybrid_sleep_mode[%d] = %s",
177 dbg_cnt, m->hybrid_sleep_mode[dbg_cnt]);
179 while (m->hybrid_sleep_state[++dbg_cnt])
180 log_debug_elogind("hybrid_sleep_state[%d] = %s",
181 dbg_cnt, m->hybrid_sleep_state[dbg_cnt]);
182 #endif // ENABLE_DEBUG_ELOGIND
184 m->udev = udev_new();
188 r = sd_event_default(&m->event);
192 sd_event_set_watchdog(m->event, true);
201 static void manager_free(Manager *m) {
211 while ((session = hashmap_first(m->sessions)))
212 session_free(session);
214 while ((u = hashmap_first(m->users)))
217 while ((d = hashmap_first(m->devices)))
220 while ((s = hashmap_first(m->seats)))
223 while ((i = hashmap_first(m->inhibitors)))
226 while ((b = hashmap_first(m->buttons)))
229 hashmap_free(m->devices);
230 hashmap_free(m->seats);
231 hashmap_free(m->sessions);
232 hashmap_free(m->users);
233 hashmap_free(m->inhibitors);
234 hashmap_free(m->buttons);
236 hashmap_free(m->user_units);
237 hashmap_free(m->session_units);
239 sd_event_source_unref(m->idle_action_event_source);
240 sd_event_source_unref(m->inhibit_timeout_source);
241 sd_event_source_unref(m->scheduled_shutdown_timeout_source);
242 sd_event_source_unref(m->nologin_timeout_source);
243 sd_event_source_unref(m->wall_message_timeout_source);
245 sd_event_source_unref(m->console_active_event_source);
246 sd_event_source_unref(m->udev_seat_event_source);
247 sd_event_source_unref(m->udev_device_event_source);
248 sd_event_source_unref(m->udev_vcsa_event_source);
249 sd_event_source_unref(m->udev_button_event_source);
250 sd_event_source_unref(m->lid_switch_ignore_event_source);
252 safe_close(m->console_active_fd);
254 udev_monitor_unref(m->udev_seat_monitor);
255 udev_monitor_unref(m->udev_device_monitor);
256 udev_monitor_unref(m->udev_vcsa_monitor);
257 udev_monitor_unref(m->udev_button_monitor);
261 if (m->unlink_nologin)
262 (void) unlink("/run/nologin");
264 bus_verify_polkit_async_registry_free(m->polkit_registry);
266 sd_bus_unref(m->bus);
267 sd_event_unref(m->event);
269 #if 0 /// elogind does not support autospawning of vts
270 safe_close(m->reserve_vt_fd);
273 manager_shutdown_cgroup(m, true);
275 strv_free(m->kill_only_users);
276 strv_free(m->kill_exclude_users);
278 free(m->scheduled_shutdown_type);
279 free(m->scheduled_shutdown_tty);
280 free(m->wall_message);
282 strv_free(m->suspend_mode);
283 strv_free(m->suspend_state);
284 strv_free(m->hibernate_mode);
285 strv_free(m->hibernate_state);
286 strv_free(m->hybrid_sleep_mode);
287 strv_free(m->hybrid_sleep_state);
292 static int manager_enumerate_devices(Manager *m) {
293 struct udev_list_entry *item = NULL, *first = NULL;
294 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
299 /* Loads devices from udev and creates seats for them as
302 e = udev_enumerate_new(m->udev);
306 r = udev_enumerate_add_match_tag(e, "master-of-seat");
310 r = udev_enumerate_add_match_is_initialized(e);
314 r = udev_enumerate_scan_devices(e);
318 first = udev_enumerate_get_list_entry(e);
319 udev_list_entry_foreach(item, first) {
320 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
323 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
327 k = manager_process_seat_device(m, d);
335 static int manager_enumerate_buttons(Manager *m) {
336 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
337 struct udev_list_entry *item = NULL, *first = NULL;
342 /* Loads buttons from udev */
344 if (m->handle_power_key == HANDLE_IGNORE &&
345 m->handle_suspend_key == HANDLE_IGNORE &&
346 m->handle_hibernate_key == HANDLE_IGNORE &&
347 m->handle_lid_switch == HANDLE_IGNORE &&
348 m->handle_lid_switch_docked == HANDLE_IGNORE)
351 e = udev_enumerate_new(m->udev);
355 r = udev_enumerate_add_match_subsystem(e, "input");
359 r = udev_enumerate_add_match_tag(e, "power-switch");
363 r = udev_enumerate_add_match_is_initialized(e);
367 r = udev_enumerate_scan_devices(e);
371 first = udev_enumerate_get_list_entry(e);
372 udev_list_entry_foreach(item, first) {
373 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
376 d = udev_device_new_from_syspath(m->udev, udev_list_entry_get_name(item));
380 k = manager_process_button_device(m, d);
388 static int manager_enumerate_seats(Manager *m) {
389 _cleanup_closedir_ DIR *d = NULL;
395 /* This loads data about seats stored on disk, but does not
396 * actually create any seats. Removes data of seats that no
399 d = opendir("/run/systemd/seats");
404 return log_error_errno(errno, "Failed to open /run/systemd/seats: %m");
407 FOREACH_DIRENT(de, d, return -errno) {
411 if (!dirent_is_file(de))
414 s = hashmap_get(m->seats, de->d_name);
416 unlinkat(dirfd(d), de->d_name, 0);
428 static int manager_enumerate_linger_users(Manager *m) {
429 _cleanup_closedir_ DIR *d = NULL;
435 d = opendir("/var/lib/systemd/linger");
440 return log_error_errno(errno, "Failed to open /var/lib/systemd/linger/: %m");
443 FOREACH_DIRENT(de, d, return -errno) {
446 if (!dirent_is_file(de))
449 k = manager_add_user_by_name(m, de->d_name, NULL);
451 log_notice_errno(k, "Couldn't add lingering user %s: %m", de->d_name);
459 static int manager_enumerate_users(Manager *m) {
460 _cleanup_closedir_ DIR *d = NULL;
466 /* Add lingering users */
467 r = manager_enumerate_linger_users(m);
469 /* Read in user data stored on disk */
470 d = opendir("/run/systemd/users");
475 return log_error_errno(errno, "Failed to open /run/systemd/users: %m");
478 FOREACH_DIRENT(de, d, return -errno) {
481 if (!dirent_is_file(de))
484 k = manager_add_user_by_name(m, de->d_name, &u);
486 log_error_errno(k, "Failed to add user by file name %s: %m", de->d_name);
492 user_add_to_gc_queue(u);
502 static int manager_enumerate_sessions(Manager *m) {
503 _cleanup_closedir_ DIR *d = NULL;
509 /* Read in session data stored on disk */
510 d = opendir("/run/systemd/sessions");
515 return log_error_errno(errno, "Failed to open /run/systemd/sessions: %m");
518 FOREACH_DIRENT(de, d, return -errno) {
522 if (!dirent_is_file(de))
525 if (!session_id_valid(de->d_name)) {
526 log_warning("Invalid session file name '%s', ignoring.", de->d_name);
531 k = manager_add_session(m, de->d_name, &s);
533 log_error_errno(k, "Failed to add session by file name %s: %m", de->d_name);
539 session_add_to_gc_queue(s);
549 static int manager_enumerate_inhibitors(Manager *m) {
550 _cleanup_closedir_ DIR *d = NULL;
556 d = opendir("/run/systemd/inhibit");
561 return log_error_errno(errno, "Failed to open /run/systemd/inhibit: %m");
564 FOREACH_DIRENT(de, d, return -errno) {
568 if (!dirent_is_file(de))
571 k = manager_add_inhibitor(m, de->d_name, &i);
573 log_notice_errno(k, "Couldn't add inhibitor %s: %m", de->d_name);
578 k = inhibitor_load(i);
586 static int manager_dispatch_seat_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
587 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
588 Manager *m = userdata;
592 d = udev_monitor_receive_device(m->udev_seat_monitor);
596 manager_process_seat_device(m, d);
600 static int manager_dispatch_device_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
601 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
602 Manager *m = userdata;
606 d = udev_monitor_receive_device(m->udev_device_monitor);
610 manager_process_seat_device(m, d);
614 #if 0 /// UNNEEDED by elogind
615 static int manager_dispatch_vcsa_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
616 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
617 Manager *m = userdata;
622 d = udev_monitor_receive_device(m->udev_vcsa_monitor);
626 name = udev_device_get_sysname(d);
628 /* Whenever a VCSA device is removed try to reallocate our
629 * VTs, to make sure our auto VTs never go away. */
631 if (name && startswith(name, "vcsa") && streq_ptr(udev_device_get_action(d), "remove"))
632 seat_preallocate_vts(m->seat0);
638 static int manager_dispatch_button_udev(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
639 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
640 Manager *m = userdata;
644 d = udev_monitor_receive_device(m->udev_button_monitor);
648 manager_process_button_device(m, d);
652 static int manager_dispatch_console(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
653 Manager *m = userdata;
657 assert(m->console_active_fd == fd);
659 seat_read_active_vt(m->seat0);
663 #if 0 /// UNNEEDED by elogind
664 static int manager_reserve_vt(Manager *m) {
665 _cleanup_free_ char *p = NULL;
669 if (m->reserve_vt <= 0)
672 if (asprintf(&p, "/dev/tty%u", m->reserve_vt) < 0)
675 m->reserve_vt_fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
676 if (m->reserve_vt_fd < 0) {
678 /* Don't complain on VT-less systems */
680 log_warning_errno(errno, "Failed to pin reserved VT: %m");
688 static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) {
689 Manager *m = userdata;
697 r = sd_bus_message_read(message, "s", &cgroup);
699 bus_log_parse_error(r);
703 s = hashmap_get(m->sessions, cgroup);
706 log_warning("Session not found: %s", cgroup);
716 static int manager_connect_bus(Manager *m) {
717 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
723 r = sd_bus_default_system(&m->bus);
725 return log_error_errno(r, "Failed to connect to system bus: %m");
727 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
729 return log_error_errno(r, "Failed to add manager object vtable: %m");
731 /* elogind relies on signals from its release agent */
732 r = sd_bus_add_match(m->bus, NULL,
734 "interface='org.freedesktop.elogind.Agent',"
736 "path='/org/freedesktop/elogind/agent'",
737 signal_agent_released, m);
739 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
741 return log_error_errno(r, "Failed to add seat object vtable: %m");
743 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
745 return log_error_errno(r, "Failed to add seat enumerator: %m");
747 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
749 return log_error_errno(r, "Failed to add session object vtable: %m");
751 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
753 return log_error_errno(r, "Failed to add session enumerator: %m");
755 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
757 return log_error_errno(r, "Failed to add user object vtable: %m");
759 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
761 return log_error_errno(r, "Failed to add user enumerator: %m");
763 #if 0 /// elogind does not support systemd as PID 1
764 r = sd_bus_add_match(m->bus,
767 "sender='org.freedesktop.systemd1',"
768 "interface='org.freedesktop.systemd1.Manager',"
769 "member='JobRemoved',"
770 "path='/org/freedesktop/systemd1'",
771 match_job_removed, m);
773 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
775 r = sd_bus_add_match(m->bus,
778 "sender='org.freedesktop.systemd1',"
779 "interface='org.freedesktop.systemd1.Manager',"
780 "member='UnitRemoved',"
781 "path='/org/freedesktop/systemd1'",
782 match_unit_removed, m);
784 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
786 r = sd_bus_add_match(m->bus,
789 "sender='org.freedesktop.systemd1',"
790 "interface='org.freedesktop.DBus.Properties',"
791 "member='PropertiesChanged'",
792 match_properties_changed, m);
794 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
796 r = sd_bus_add_match(m->bus,
799 "sender='org.freedesktop.systemd1',"
800 "interface='org.freedesktop.systemd1.Manager',"
801 "member='Reloading',"
802 "path='/org/freedesktop/systemd1'",
805 return log_error_errno(r, "Failed to add match for Reloading: %m");
807 r = sd_bus_call_method(
809 "org.freedesktop.systemd1",
810 "/org/freedesktop/systemd1",
811 "org.freedesktop.systemd1.Manager",
816 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
821 r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
823 return log_error_errno(r, "Failed to register name: %m");
825 r = sd_bus_attach_event(m->bus, m->event, 0);
827 return log_error_errno(r, "Failed to attach bus to event loop: %m");
832 static int manager_vt_switch(sd_event_source *src, const struct signalfd_siginfo *si, void *data) {
834 Session *active, *iter;
837 * We got a VT-switch signal and we have to acknowledge it immediately.
838 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
839 * old user-space might run multiple sessions on a single VT, *sigh*.
840 * Therefore, we have to iterate all sessions and find one with a vtfd
841 * on the requested VT.
842 * As only VTs with active controllers have VT_PROCESS set, our current
843 * notion of the active VT might be wrong (for instance if the switch
844 * happens while we setup VT_PROCESS). Therefore, read the current VT
845 * first and then use s->active->vtnr as reference. Note that this is
846 * not racy, as no further VT-switch can happen as long as we're in
847 * synchronous VT_PROCESS mode.
851 seat_read_active_vt(m->seat0);
853 active = m->seat0->active;
854 if (!active || active->vtnr < 1) {
855 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
859 if (active->vtfd >= 0) {
860 session_leave_vt(active);
862 LIST_FOREACH(sessions_by_seat, iter, m->seat0->sessions) {
863 if (iter->vtnr == active->vtnr && iter->vtfd >= 0) {
864 session_leave_vt(iter);
873 static int manager_connect_console(Manager *m) {
877 assert(m->console_active_fd < 0);
879 /* On certain architectures (S390 and Xen, and containers),
880 /dev/tty0 does not exist, so don't fail if we can't open
882 if (access("/dev/tty0", F_OK) < 0)
885 m->console_active_fd = open("/sys/class/tty/tty0/active", O_RDONLY|O_NOCTTY|O_CLOEXEC);
886 if (m->console_active_fd < 0) {
888 /* On some systems the device node /dev/tty0 may exist
889 * even though /sys/class/tty/tty0 does not. */
893 return log_error_errno(errno, "Failed to open /sys/class/tty/tty0/active: %m");
896 r = sd_event_add_io(m->event, &m->console_active_event_source, m->console_active_fd, 0, manager_dispatch_console, m);
898 log_error("Failed to watch foreground console");
903 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
904 * as VT-acquire signal. We ignore any acquire-events (yes, we still
905 * have to provide a valid signal-number for it!) and acknowledge all
906 * release events immediately.
909 if (SIGRTMIN + 1 > SIGRTMAX) {
910 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN, SIGRTMAX);
914 assert_se(ignore_signals(SIGRTMIN + 1, -1) >= 0);
915 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN, -1) >= 0);
917 r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
924 static int manager_connect_udev(Manager *m) {
928 assert(!m->udev_seat_monitor);
929 assert(!m->udev_device_monitor);
930 assert(!m->udev_vcsa_monitor);
931 assert(!m->udev_button_monitor);
933 m->udev_seat_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
934 if (!m->udev_seat_monitor)
937 r = udev_monitor_filter_add_match_tag(m->udev_seat_monitor, "master-of-seat");
941 r = udev_monitor_enable_receiving(m->udev_seat_monitor);
945 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);
949 m->udev_device_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
950 if (!m->udev_device_monitor)
953 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "input", NULL);
957 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "graphics", NULL);
961 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_device_monitor, "drm", NULL);
965 r = udev_monitor_enable_receiving(m->udev_device_monitor);
969 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);
973 /* Don't watch keys if nobody cares */
974 if (m->handle_power_key != HANDLE_IGNORE ||
975 m->handle_suspend_key != HANDLE_IGNORE ||
976 m->handle_hibernate_key != HANDLE_IGNORE ||
977 m->handle_lid_switch != HANDLE_IGNORE ||
978 m->handle_lid_switch_docked != HANDLE_IGNORE) {
980 m->udev_button_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
981 if (!m->udev_button_monitor)
984 r = udev_monitor_filter_add_match_tag(m->udev_button_monitor, "power-switch");
988 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_button_monitor, "input", NULL);
992 r = udev_monitor_enable_receiving(m->udev_button_monitor);
996 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);
1001 /* Don't bother watching VCSA devices, if nobody cares */
1002 #if 0 /// elogind does not support autospawning of vts
1003 if (m->n_autovts > 0 && m->console_active_fd >= 0) {
1005 m->udev_vcsa_monitor = udev_monitor_new_from_netlink(m->udev, "udev");
1006 if (!m->udev_vcsa_monitor)
1009 r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_vcsa_monitor, "vc", NULL);
1013 r = udev_monitor_enable_receiving(m->udev_vcsa_monitor);
1017 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);
1026 static void manager_gc(Manager *m, bool drop_not_started) {
1033 while ((seat = m->seat_gc_queue)) {
1034 LIST_REMOVE(gc_queue, m->seat_gc_queue, seat);
1035 seat->in_gc_queue = false;
1037 if (!seat_check_gc(seat, drop_not_started)) {
1038 seat_stop(seat, false);
1043 while ((session = m->session_gc_queue)) {
1044 LIST_REMOVE(gc_queue, m->session_gc_queue, session);
1045 session->in_gc_queue = false;
1047 /* First, if we are not closing yet, initiate stopping */
1048 if (!session_check_gc(session, drop_not_started) &&
1049 session_get_state(session) != SESSION_CLOSING)
1050 session_stop(session, false);
1052 /* Normally, this should make the session referenced
1053 * again, if it doesn't then let's get rid of it
1055 if (!session_check_gc(session, drop_not_started)) {
1056 session_finalize(session);
1057 session_free(session);
1061 while ((user = m->user_gc_queue)) {
1062 LIST_REMOVE(gc_queue, m->user_gc_queue, user);
1063 user->in_gc_queue = false;
1065 /* First step: queue stop jobs */
1066 if (!user_check_gc(user, drop_not_started))
1067 user_stop(user, false);
1069 /* Second step: finalize user */
1070 if (!user_check_gc(user, drop_not_started)) {
1071 user_finalize(user);
1077 static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *userdata) {
1078 Manager *m = userdata;
1079 struct dual_timestamp since;
1085 if (m->idle_action == HANDLE_IGNORE ||
1086 m->idle_action_usec <= 0)
1089 n = now(CLOCK_MONOTONIC);
1091 r = manager_get_idle_hint(m, &since);
1093 /* Not idle. Let's check if after a timeout it might be idle then. */
1094 elapse = n + m->idle_action_usec;
1096 /* Idle! Let's see if it's time to do something, or if
1097 * we shall sleep for longer. */
1099 if (n >= since.monotonic + m->idle_action_usec &&
1100 (m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
1101 log_info("System idle. Taking action.");
1103 manager_handle_action(m, 0, m->idle_action, false, false);
1104 m->idle_action_not_before_usec = n;
1107 elapse = MAX(since.monotonic, m->idle_action_not_before_usec) + m->idle_action_usec;
1110 if (!m->idle_action_event_source) {
1112 r = sd_event_add_time(
1114 &m->idle_action_event_source,
1116 elapse, USEC_PER_SEC*30,
1117 manager_dispatch_idle_action, m);
1119 return log_error_errno(r, "Failed to add idle event source: %m");
1121 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
1123 return log_error_errno(r, "Failed to set idle event source priority: %m");
1125 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
1127 return log_error_errno(r, "Failed to set idle event timer: %m");
1129 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
1131 return log_error_errno(r, "Failed to enable idle event timer: %m");
1137 static int manager_startup(Manager *m) {
1143 Inhibitor *inhibitor;
1148 /* Connect to console */
1149 r = manager_connect_console(m);
1153 /* Connect to udev */
1154 r = manager_connect_udev(m);
1156 return log_error_errno(r, "Failed to create udev watchers: %m");
1158 /* Connect to the bus */
1159 r = manager_connect_bus(m);
1163 /* Instantiate magic seat 0 */
1164 r = manager_add_seat(m, "seat0", &m->seat0);
1166 return log_error_errno(r, "Failed to add seat0: %m");
1168 r = manager_set_lid_switch_ignore(m, 0 + m->holdoff_timeout_usec);
1170 log_warning_errno(r, "Failed to set up lid switch ignore event source: %m");
1172 /* Deserialize state */
1173 r = manager_enumerate_devices(m);
1175 log_warning_errno(r, "Device enumeration failed: %m");
1177 r = manager_enumerate_seats(m);
1179 log_warning_errno(r, "Seat enumeration failed: %m");
1181 r = manager_enumerate_users(m);
1183 log_warning_errno(r, "User enumeration failed: %m");
1185 r = manager_enumerate_sessions(m);
1187 log_warning_errno(r, "Session enumeration failed: %m");
1189 r = manager_enumerate_inhibitors(m);
1191 log_warning_errno(r, "Inhibitor enumeration failed: %m");
1193 r = manager_enumerate_buttons(m);
1195 log_warning_errno(r, "Button enumeration failed: %m");
1197 /* Remove stale objects before we start them */
1198 manager_gc(m, false);
1200 /* Reserve the special reserved VT */
1201 #if 0 /// elogind does not support autospawning of vts
1202 manager_reserve_vt(m);
1205 /* And start everything */
1206 HASHMAP_FOREACH(seat, m->seats, i)
1209 HASHMAP_FOREACH(user, m->users, i)
1212 HASHMAP_FOREACH(session, m->sessions, i)
1213 session_start(session);
1215 HASHMAP_FOREACH(inhibitor, m->inhibitors, i)
1216 inhibitor_start(inhibitor);
1218 HASHMAP_FOREACH(button, m->buttons, i)
1219 button_check_switches(button);
1221 manager_dispatch_idle_action(NULL, 0, m);
1226 static int manager_run(Manager *m) {
1232 r = sd_event_get_state(m->event);
1235 if (r == SD_EVENT_FINISHED)
1238 manager_gc(m, true);
1240 r = manager_dispatch_delayed(m, false);
1246 r = sd_event_run(m->event, (uint64_t) -1);
1252 static int manager_parse_config_file(Manager *m) {
1253 #if 0 /// elogind parses its own config file
1257 return config_parse_many(PKGSYSCONFDIR "/logind.conf",
1258 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
1260 config_item_perf_lookup, logind_gperf_lookup,
1263 const char* logind_conf = getenv("ELOGIND_CONF_FILE");
1268 logind_conf = PKGSYSCONFDIR "/logind.conf";
1270 return config_parse(NULL, logind_conf, NULL, "Login\0Sleep\0",
1271 config_item_perf_lookup, logind_gperf_lookup,
1272 false, false, true, m);
1276 int main(int argc, char *argv[]) {
1280 elogind_set_program_name(argv[0]);
1281 log_set_target(LOG_TARGET_AUTO);
1282 log_set_facility(LOG_AUTH);
1283 log_parse_environment();
1286 #ifdef ENABLE_DEBUG_ELOGIND
1287 log_set_max_level(LOG_DEBUG);
1288 #endif // ENABLE_DEBUG_ELOGIND
1293 log_error("This program takes no arguments.");
1298 r = mac_selinux_init("/run");
1300 log_error_errno(r, "Could not initialize labelling: %m");
1304 /* Always create the directories people can create inotify
1305 * watches in. Note that some applications might check for the
1306 * existence of /run/systemd/seats/ to determine whether
1307 * logind is available, so please always make sure this check
1309 #if 0 /// elogind can not rely on systemd to help, so we need a bit more effort than this
1310 mkdir_label("/run/systemd/seats", 0755);
1311 mkdir_label("/run/systemd/users", 0755);
1312 mkdir_label("/run/systemd/sessions", 0755);
1314 r = mkdir_label("/run/systemd", 0755);
1315 if ( (r < 0) && (-EEXIST != r) )
1316 return log_error_errno(r, "Failed to create /run/systemd : %m");
1317 r = mkdir_label("/run/systemd/seats", 0755);
1318 if ( r < 0 && (-EEXIST != r) )
1319 return log_error_errno(r, "Failed to create /run/systemd/seats : %m");
1320 r = mkdir_label("/run/systemd/users", 0755);
1321 if ( r < 0 && (-EEXIST != r) )
1322 return log_error_errno(r, "Failed to create /run/systemd/users : %m");
1323 r = mkdir_label("/run/systemd/sessions", 0755);
1324 if ( r < 0 && (-EEXIST != r) )
1325 return log_error_errno(r, "Failed to create /run/systemd/sessions : %m");
1326 r = mkdir_label("/run/systemd/machines", 0755);
1327 if ( r < 0 && (-EEXIST != r) )
1328 return log_error_errno(r, "Failed to create /run/systemd/machines : %m");
1337 r = manager_startup(m);
1339 log_error_errno(r, "Failed to fully start up daemon: %m");
1343 log_debug("elogind running as pid "PID_FMT, getpid());
1347 "STATUS=Processing requests...");
1351 log_debug("elogind stopped as pid "PID_FMT, getpid());
1356 "STATUS=Shutting down...");
1360 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;