1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include "sd-daemon.h"
30 #include "bus-error.h"
32 #include "conf-parser.h"
33 #include "formats-util.h"
34 #include "signal-util.h"
36 #include "udev-util.h"
39 static void manager_free(Manager
*m
);
41 static Manager
*manager_new(void) {
49 m
->console_active_fd
= -1;
50 m
->reserve_vt_fd
= -1;
55 m
->inhibit_delay_max
= 5 * USEC_PER_SEC
;
56 m
->handle_power_key
= HANDLE_POWEROFF
;
57 m
->handle_suspend_key
= HANDLE_SUSPEND
;
58 m
->handle_hibernate_key
= HANDLE_HIBERNATE
;
59 m
->handle_lid_switch
= HANDLE_SUSPEND
;
60 m
->handle_lid_switch_docked
= HANDLE_IGNORE
;
61 m
->lid_switch_ignore_inhibited
= true;
62 m
->holdoff_timeout_usec
= 30 * USEC_PER_SEC
;
64 m
->idle_action_usec
= 30 * USEC_PER_MINUTE
;
65 m
->idle_action
= HANDLE_IGNORE
;
66 m
->idle_action_not_before_usec
= now(CLOCK_MONOTONIC
);
68 m
->runtime_dir_size
= PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
70 m
->devices
= hashmap_new(&string_hash_ops
);
71 m
->seats
= hashmap_new(&string_hash_ops
);
72 m
->sessions
= hashmap_new(&string_hash_ops
);
73 m
->users
= hashmap_new(NULL
);
74 m
->inhibitors
= hashmap_new(&string_hash_ops
);
75 m
->buttons
= hashmap_new(&string_hash_ops
);
77 m
->user_units
= hashmap_new(&string_hash_ops
);
78 m
->session_units
= hashmap_new(&string_hash_ops
);
80 if (!m
->devices
|| !m
->seats
|| !m
->sessions
|| !m
->users
|| !m
->inhibitors
|| !m
->buttons
|| !m
->user_units
|| !m
->session_units
)
83 m
->kill_exclude_users
= strv_new("root", NULL
);
84 if (!m
->kill_exclude_users
)
91 r
= sd_event_default(&m
->event
);
95 sd_event_set_watchdog(m
->event
, true);
104 static void manager_free(Manager
*m
) {
114 while ((session
= hashmap_first(m
->sessions
)))
115 session_free(session
);
117 while ((u
= hashmap_first(m
->users
)))
120 while ((d
= hashmap_first(m
->devices
)))
123 while ((s
= hashmap_first(m
->seats
)))
126 while ((i
= hashmap_first(m
->inhibitors
)))
129 while ((b
= hashmap_first(m
->buttons
)))
132 hashmap_free(m
->devices
);
133 hashmap_free(m
->seats
);
134 hashmap_free(m
->sessions
);
135 hashmap_free(m
->users
);
136 hashmap_free(m
->inhibitors
);
137 hashmap_free(m
->buttons
);
139 hashmap_free(m
->user_units
);
140 hashmap_free(m
->session_units
);
142 sd_event_source_unref(m
->idle_action_event_source
);
143 sd_event_source_unref(m
->inhibit_timeout_source
);
144 sd_event_source_unref(m
->scheduled_shutdown_timeout_source
);
145 sd_event_source_unref(m
->nologin_timeout_source
);
146 sd_event_source_unref(m
->wall_message_timeout_source
);
148 sd_event_source_unref(m
->console_active_event_source
);
149 sd_event_source_unref(m
->udev_seat_event_source
);
150 sd_event_source_unref(m
->udev_device_event_source
);
151 sd_event_source_unref(m
->udev_vcsa_event_source
);
152 sd_event_source_unref(m
->udev_button_event_source
);
153 sd_event_source_unref(m
->lid_switch_ignore_event_source
);
155 safe_close(m
->console_active_fd
);
157 udev_monitor_unref(m
->udev_seat_monitor
);
158 udev_monitor_unref(m
->udev_device_monitor
);
159 udev_monitor_unref(m
->udev_vcsa_monitor
);
160 udev_monitor_unref(m
->udev_button_monitor
);
164 if (m
->unlink_nologin
)
165 (void) unlink("/run/nologin");
167 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
169 sd_bus_unref(m
->bus
);
170 sd_event_unref(m
->event
);
172 safe_close(m
->reserve_vt_fd
);
174 strv_free(m
->kill_only_users
);
175 strv_free(m
->kill_exclude_users
);
177 free(m
->scheduled_shutdown_type
);
178 free(m
->scheduled_shutdown_tty
);
179 free(m
->wall_message
);
184 static int manager_enumerate_devices(Manager
*m
) {
185 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
186 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
191 /* Loads devices from udev and creates seats for them as
194 e
= udev_enumerate_new(m
->udev
);
198 r
= udev_enumerate_add_match_tag(e
, "master-of-seat");
202 r
= udev_enumerate_add_match_is_initialized(e
);
206 r
= udev_enumerate_scan_devices(e
);
210 first
= udev_enumerate_get_list_entry(e
);
211 udev_list_entry_foreach(item
, first
) {
212 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
215 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
219 k
= manager_process_seat_device(m
, d
);
227 static int manager_enumerate_buttons(Manager
*m
) {
228 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
229 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
234 /* Loads buttons from udev */
236 if (m
->handle_power_key
== HANDLE_IGNORE
&&
237 m
->handle_suspend_key
== HANDLE_IGNORE
&&
238 m
->handle_hibernate_key
== HANDLE_IGNORE
&&
239 m
->handle_lid_switch
== HANDLE_IGNORE
&&
240 m
->handle_lid_switch_docked
== HANDLE_IGNORE
)
243 e
= udev_enumerate_new(m
->udev
);
247 r
= udev_enumerate_add_match_subsystem(e
, "input");
251 r
= udev_enumerate_add_match_tag(e
, "power-switch");
255 r
= udev_enumerate_add_match_is_initialized(e
);
259 r
= udev_enumerate_scan_devices(e
);
263 first
= udev_enumerate_get_list_entry(e
);
264 udev_list_entry_foreach(item
, first
) {
265 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
268 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
272 k
= manager_process_button_device(m
, d
);
280 static int manager_enumerate_seats(Manager
*m
) {
281 _cleanup_closedir_
DIR *d
= NULL
;
287 /* This loads data about seats stored on disk, but does not
288 * actually create any seats. Removes data of seats that no
291 d
= opendir("/run/systemd/seats");
296 log_error_errno(errno
, "Failed to open /run/systemd/seats: %m");
300 FOREACH_DIRENT(de
, d
, return -errno
) {
304 if (!dirent_is_file(de
))
307 s
= hashmap_get(m
->seats
, de
->d_name
);
309 unlinkat(dirfd(d
), de
->d_name
, 0);
321 static int manager_enumerate_linger_users(Manager
*m
) {
322 _cleanup_closedir_
DIR *d
= NULL
;
328 d
= opendir("/var/lib/systemd/linger");
333 log_error_errno(errno
, "Failed to open /var/lib/systemd/linger/: %m");
337 FOREACH_DIRENT(de
, d
, return -errno
) {
340 if (!dirent_is_file(de
))
343 k
= manager_add_user_by_name(m
, de
->d_name
, NULL
);
345 log_notice_errno(k
, "Couldn't add lingering user %s: %m", de
->d_name
);
353 static int manager_enumerate_users(Manager
*m
) {
354 _cleanup_closedir_
DIR *d
= NULL
;
360 /* Add lingering users */
361 r
= manager_enumerate_linger_users(m
);
363 /* Read in user data stored on disk */
364 d
= opendir("/run/systemd/users");
369 log_error_errno(errno
, "Failed to open /run/systemd/users: %m");
373 FOREACH_DIRENT(de
, d
, return -errno
) {
376 if (!dirent_is_file(de
))
379 k
= manager_add_user_by_name(m
, de
->d_name
, &u
);
381 log_error_errno(k
, "Failed to add user by file name %s: %m", de
->d_name
);
387 user_add_to_gc_queue(u
);
397 static int manager_enumerate_sessions(Manager
*m
) {
398 _cleanup_closedir_
DIR *d
= NULL
;
404 /* Read in session data stored on disk */
405 d
= opendir("/run/systemd/sessions");
410 log_error_errno(errno
, "Failed to open /run/systemd/sessions: %m");
414 FOREACH_DIRENT(de
, d
, return -errno
) {
418 if (!dirent_is_file(de
))
421 if (!session_id_valid(de
->d_name
)) {
422 log_warning("Invalid session file name '%s', ignoring.", de
->d_name
);
427 k
= manager_add_session(m
, de
->d_name
, &s
);
429 log_error_errno(k
, "Failed to add session by file name %s: %m", de
->d_name
);
435 session_add_to_gc_queue(s
);
445 static int manager_enumerate_inhibitors(Manager
*m
) {
446 _cleanup_closedir_
DIR *d
= NULL
;
452 d
= opendir("/run/systemd/inhibit");
457 log_error_errno(errno
, "Failed to open /run/systemd/inhibit: %m");
461 FOREACH_DIRENT(de
, d
, return -errno
) {
465 if (!dirent_is_file(de
))
468 k
= manager_add_inhibitor(m
, de
->d_name
, &i
);
470 log_notice_errno(k
, "Couldn't add inhibitor %s: %m", de
->d_name
);
475 k
= inhibitor_load(i
);
483 static int manager_dispatch_seat_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
484 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
485 Manager
*m
= userdata
;
489 d
= udev_monitor_receive_device(m
->udev_seat_monitor
);
493 manager_process_seat_device(m
, d
);
497 static int manager_dispatch_device_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
498 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
499 Manager
*m
= userdata
;
503 d
= udev_monitor_receive_device(m
->udev_device_monitor
);
507 manager_process_seat_device(m
, d
);
511 static int manager_dispatch_vcsa_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
512 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
513 Manager
*m
= userdata
;
518 d
= udev_monitor_receive_device(m
->udev_vcsa_monitor
);
522 name
= udev_device_get_sysname(d
);
524 /* Whenever a VCSA device is removed try to reallocate our
525 * VTs, to make sure our auto VTs never go away. */
527 if (name
&& startswith(name
, "vcsa") && streq_ptr(udev_device_get_action(d
), "remove"))
528 seat_preallocate_vts(m
->seat0
);
533 static int manager_dispatch_button_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
534 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
535 Manager
*m
= userdata
;
539 d
= udev_monitor_receive_device(m
->udev_button_monitor
);
543 manager_process_button_device(m
, d
);
547 static int manager_dispatch_console(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
548 Manager
*m
= userdata
;
552 assert(m
->console_active_fd
== fd
);
554 seat_read_active_vt(m
->seat0
);
558 static int manager_reserve_vt(Manager
*m
) {
559 _cleanup_free_
char *p
= NULL
;
563 if (m
->reserve_vt
<= 0)
566 if (asprintf(&p
, "/dev/tty%u", m
->reserve_vt
) < 0)
569 m
->reserve_vt_fd
= open(p
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
|O_NONBLOCK
);
570 if (m
->reserve_vt_fd
< 0) {
572 /* Don't complain on VT-less systems */
574 log_warning_errno(errno
, "Failed to pin reserved VT: %m");
581 static int manager_connect_bus(Manager
*m
) {
582 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
588 r
= sd_bus_default_system(&m
->bus
);
590 return log_error_errno(r
, "Failed to connect to system bus: %m");
592 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable
, m
);
594 return log_error_errno(r
, "Failed to add manager object vtable: %m");
596 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable
, seat_object_find
, m
);
598 return log_error_errno(r
, "Failed to add seat object vtable: %m");
600 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/seat", seat_node_enumerator
, m
);
602 return log_error_errno(r
, "Failed to add seat enumerator: %m");
604 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable
, session_object_find
, m
);
606 return log_error_errno(r
, "Failed to add session object vtable: %m");
608 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/session", session_node_enumerator
, m
);
610 return log_error_errno(r
, "Failed to add session enumerator: %m");
612 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable
, user_object_find
, m
);
614 return log_error_errno(r
, "Failed to add user object vtable: %m");
616 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/user", user_node_enumerator
, m
);
618 return log_error_errno(r
, "Failed to add user enumerator: %m");
620 r
= sd_bus_add_match(m
->bus
,
623 "sender='org.freedesktop.systemd1',"
624 "interface='org.freedesktop.systemd1.Manager',"
625 "member='JobRemoved',"
626 "path='/org/freedesktop/systemd1'",
627 match_job_removed
, m
);
629 return log_error_errno(r
, "Failed to add match for JobRemoved: %m");
631 r
= sd_bus_add_match(m
->bus
,
634 "sender='org.freedesktop.systemd1',"
635 "interface='org.freedesktop.systemd1.Manager',"
636 "member='UnitRemoved',"
637 "path='/org/freedesktop/systemd1'",
638 match_unit_removed
, m
);
640 return log_error_errno(r
, "Failed to add match for UnitRemoved: %m");
642 r
= sd_bus_add_match(m
->bus
,
645 "sender='org.freedesktop.systemd1',"
646 "interface='org.freedesktop.DBus.Properties',"
647 "member='PropertiesChanged'",
648 match_properties_changed
, m
);
650 return log_error_errno(r
, "Failed to add match for PropertiesChanged: %m");
652 r
= sd_bus_add_match(m
->bus
,
655 "sender='org.freedesktop.systemd1',"
656 "interface='org.freedesktop.systemd1.Manager',"
657 "member='Reloading',"
658 "path='/org/freedesktop/systemd1'",
661 return log_error_errno(r
, "Failed to add match for Reloading: %m");
663 r
= sd_bus_call_method(
665 "org.freedesktop.systemd1",
666 "/org/freedesktop/systemd1",
667 "org.freedesktop.systemd1.Manager",
672 log_error("Failed to enable subscription: %s", bus_error_message(&error
, r
));
676 r
= sd_bus_request_name(m
->bus
, "org.freedesktop.login1", 0);
678 return log_error_errno(r
, "Failed to register name: %m");
680 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
682 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
687 static int manager_vt_switch(sd_event_source
*src
, const struct signalfd_siginfo
*si
, void *data
) {
689 Session
*active
, *iter
;
692 * We got a VT-switch signal and we have to acknowledge it immediately.
693 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
694 * old user-space might run multiple sessions on a single VT, *sigh*.
695 * Therefore, we have to iterate all sessions and find one with a vtfd
696 * on the requested VT.
697 * As only VTs with active controllers have VT_PROCESS set, our current
698 * notion of the active VT might be wrong (for instance if the switch
699 * happens while we setup VT_PROCESS). Therefore, read the current VT
700 * first and then use s->active->vtnr as reference. Note that this is
701 * not racy, as no further VT-switch can happen as long as we're in
702 * synchronous VT_PROCESS mode.
706 seat_read_active_vt(m
->seat0
);
708 active
= m
->seat0
->active
;
709 if (!active
|| active
->vtnr
< 1) {
710 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
714 if (active
->vtfd
>= 0) {
715 session_leave_vt(active
);
717 LIST_FOREACH(sessions_by_seat
, iter
, m
->seat0
->sessions
) {
718 if (iter
->vtnr
== active
->vtnr
&& iter
->vtfd
>= 0) {
719 session_leave_vt(iter
);
728 static int manager_connect_console(Manager
*m
) {
732 assert(m
->console_active_fd
< 0);
734 /* On certain architectures (S390 and Xen, and containers),
735 /dev/tty0 does not exist, so don't fail if we can't open
737 if (access("/dev/tty0", F_OK
) < 0)
740 m
->console_active_fd
= open("/sys/class/tty/tty0/active", O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
741 if (m
->console_active_fd
< 0) {
743 /* On some systems the device node /dev/tty0 may exist
744 * even though /sys/class/tty/tty0 does not. */
748 log_error_errno(errno
, "Failed to open /sys/class/tty/tty0/active: %m");
752 r
= sd_event_add_io(m
->event
, &m
->console_active_event_source
, m
->console_active_fd
, 0, manager_dispatch_console
, m
);
754 log_error("Failed to watch foreground console");
759 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
760 * as VT-acquire signal. We ignore any acquire-events (yes, we still
761 * have to provide a valid signal-number for it!) and acknowledge all
762 * release events immediately.
765 if (SIGRTMIN
+ 1 > SIGRTMAX
) {
766 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN
, SIGRTMAX
);
770 assert_se(ignore_signals(SIGRTMIN
+ 1, -1) >= 0);
771 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGRTMIN
, -1) >= 0);
773 r
= sd_event_add_signal(m
->event
, NULL
, SIGRTMIN
, manager_vt_switch
, m
);
780 static int manager_connect_udev(Manager
*m
) {
784 assert(!m
->udev_seat_monitor
);
785 assert(!m
->udev_device_monitor
);
786 assert(!m
->udev_vcsa_monitor
);
787 assert(!m
->udev_button_monitor
);
789 m
->udev_seat_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
790 if (!m
->udev_seat_monitor
)
793 r
= udev_monitor_filter_add_match_tag(m
->udev_seat_monitor
, "master-of-seat");
797 r
= udev_monitor_enable_receiving(m
->udev_seat_monitor
);
801 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
);
805 m
->udev_device_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
806 if (!m
->udev_device_monitor
)
809 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "input", NULL
);
813 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "graphics", NULL
);
817 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "drm", NULL
);
821 r
= udev_monitor_enable_receiving(m
->udev_device_monitor
);
825 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
);
829 /* Don't watch keys if nobody cares */
830 if (m
->handle_power_key
!= HANDLE_IGNORE
||
831 m
->handle_suspend_key
!= HANDLE_IGNORE
||
832 m
->handle_hibernate_key
!= HANDLE_IGNORE
||
833 m
->handle_lid_switch
!= HANDLE_IGNORE
||
834 m
->handle_lid_switch_docked
!= HANDLE_IGNORE
) {
836 m
->udev_button_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
837 if (!m
->udev_button_monitor
)
840 r
= udev_monitor_filter_add_match_tag(m
->udev_button_monitor
, "power-switch");
844 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_button_monitor
, "input", NULL
);
848 r
= udev_monitor_enable_receiving(m
->udev_button_monitor
);
852 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
);
857 /* Don't bother watching VCSA devices, if nobody cares */
858 if (m
->n_autovts
> 0 && m
->console_active_fd
>= 0) {
860 m
->udev_vcsa_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
861 if (!m
->udev_vcsa_monitor
)
864 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_vcsa_monitor
, "vc", NULL
);
868 r
= udev_monitor_enable_receiving(m
->udev_vcsa_monitor
);
872 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
);
880 static void manager_gc(Manager
*m
, bool drop_not_started
) {
887 while ((seat
= m
->seat_gc_queue
)) {
888 LIST_REMOVE(gc_queue
, m
->seat_gc_queue
, seat
);
889 seat
->in_gc_queue
= false;
891 if (!seat_check_gc(seat
, drop_not_started
)) {
892 seat_stop(seat
, false);
897 while ((session
= m
->session_gc_queue
)) {
898 LIST_REMOVE(gc_queue
, m
->session_gc_queue
, session
);
899 session
->in_gc_queue
= false;
901 /* First, if we are not closing yet, initiate stopping */
902 if (!session_check_gc(session
, drop_not_started
) &&
903 session_get_state(session
) != SESSION_CLOSING
)
904 session_stop(session
, false);
906 /* Normally, this should make the session referenced
907 * again, if it doesn't then let's get rid of it
909 if (!session_check_gc(session
, drop_not_started
)) {
910 session_finalize(session
);
911 session_free(session
);
915 while ((user
= m
->user_gc_queue
)) {
916 LIST_REMOVE(gc_queue
, m
->user_gc_queue
, user
);
917 user
->in_gc_queue
= false;
919 /* First step: queue stop jobs */
920 if (!user_check_gc(user
, drop_not_started
))
921 user_stop(user
, false);
923 /* Second step: finalize user */
924 if (!user_check_gc(user
, drop_not_started
)) {
931 static int manager_dispatch_idle_action(sd_event_source
*s
, uint64_t t
, void *userdata
) {
932 Manager
*m
= userdata
;
933 struct dual_timestamp since
;
939 if (m
->idle_action
== HANDLE_IGNORE
||
940 m
->idle_action_usec
<= 0)
943 n
= now(CLOCK_MONOTONIC
);
945 r
= manager_get_idle_hint(m
, &since
);
947 /* Not idle. Let's check if after a timeout it might be idle then. */
948 elapse
= n
+ m
->idle_action_usec
;
950 /* Idle! Let's see if it's time to do something, or if
951 * we shall sleep for longer. */
953 if (n
>= since
.monotonic
+ m
->idle_action_usec
&&
954 (m
->idle_action_not_before_usec
<= 0 || n
>= m
->idle_action_not_before_usec
+ m
->idle_action_usec
)) {
955 log_info("System idle. Taking action.");
957 manager_handle_action(m
, 0, m
->idle_action
, false, false);
958 m
->idle_action_not_before_usec
= n
;
961 elapse
= MAX(since
.monotonic
, m
->idle_action_not_before_usec
) + m
->idle_action_usec
;
964 if (!m
->idle_action_event_source
) {
966 r
= sd_event_add_time(
968 &m
->idle_action_event_source
,
970 elapse
, USEC_PER_SEC
*30,
971 manager_dispatch_idle_action
, m
);
973 return log_error_errno(r
, "Failed to add idle event source: %m");
975 r
= sd_event_source_set_priority(m
->idle_action_event_source
, SD_EVENT_PRIORITY_IDLE
+10);
977 return log_error_errno(r
, "Failed to set idle event source priority: %m");
979 r
= sd_event_source_set_time(m
->idle_action_event_source
, elapse
);
981 return log_error_errno(r
, "Failed to set idle event timer: %m");
983 r
= sd_event_source_set_enabled(m
->idle_action_event_source
, SD_EVENT_ONESHOT
);
985 return log_error_errno(r
, "Failed to enable idle event timer: %m");
991 static int manager_startup(Manager
*m
) {
997 Inhibitor
*inhibitor
;
1002 /* Connect to console */
1003 r
= manager_connect_console(m
);
1007 /* Connect to udev */
1008 r
= manager_connect_udev(m
);
1010 return log_error_errno(r
, "Failed to create udev watchers: %m");
1012 /* Connect to the bus */
1013 r
= manager_connect_bus(m
);
1017 /* Instantiate magic seat 0 */
1018 r
= manager_add_seat(m
, "seat0", &m
->seat0
);
1020 return log_error_errno(r
, "Failed to add seat0: %m");
1022 r
= manager_set_lid_switch_ignore(m
, 0 + m
->holdoff_timeout_usec
);
1024 log_warning_errno(r
, "Failed to set up lid switch ignore event source: %m");
1026 /* Deserialize state */
1027 r
= manager_enumerate_devices(m
);
1029 log_warning_errno(r
, "Device enumeration failed: %m");
1031 r
= manager_enumerate_seats(m
);
1033 log_warning_errno(r
, "Seat enumeration failed: %m");
1035 r
= manager_enumerate_users(m
);
1037 log_warning_errno(r
, "User enumeration failed: %m");
1039 r
= manager_enumerate_sessions(m
);
1041 log_warning_errno(r
, "Session enumeration failed: %m");
1043 r
= manager_enumerate_inhibitors(m
);
1045 log_warning_errno(r
, "Inhibitor enumeration failed: %m");
1047 r
= manager_enumerate_buttons(m
);
1049 log_warning_errno(r
, "Button enumeration failed: %m");
1051 /* Remove stale objects before we start them */
1052 manager_gc(m
, false);
1054 /* Reserve the special reserved VT */
1055 manager_reserve_vt(m
);
1057 /* And start everything */
1058 HASHMAP_FOREACH(seat
, m
->seats
, i
)
1061 HASHMAP_FOREACH(user
, m
->users
, i
)
1064 HASHMAP_FOREACH(session
, m
->sessions
, i
)
1065 session_start(session
);
1067 HASHMAP_FOREACH(inhibitor
, m
->inhibitors
, i
)
1068 inhibitor_start(inhibitor
);
1070 HASHMAP_FOREACH(button
, m
->buttons
, i
)
1071 button_check_switches(button
);
1073 manager_dispatch_idle_action(NULL
, 0, m
);
1078 static int manager_run(Manager
*m
) {
1084 r
= sd_event_get_state(m
->event
);
1087 if (r
== SD_EVENT_FINISHED
)
1090 manager_gc(m
, true);
1092 r
= manager_dispatch_delayed(m
, false);
1098 r
= sd_event_run(m
->event
, (uint64_t) -1);
1104 static int manager_parse_config_file(Manager
*m
) {
1107 return config_parse_many("/etc/systemd/logind.conf",
1108 CONF_DIRS_NULSTR("systemd/logind.conf"),
1110 config_item_perf_lookup
, logind_gperf_lookup
,
1114 int main(int argc
, char *argv
[]) {
1118 log_set_target(LOG_TARGET_AUTO
);
1119 log_set_facility(LOG_AUTH
);
1120 log_parse_environment();
1126 log_error("This program takes no arguments.");
1131 /* Always create the directories people can create inotify
1132 * watches in. Note that some applications might check for the
1133 * existence of /run/systemd/seats/ to determine whether
1134 * logind is available, so please always make sure this check
1136 mkdir_label("/run/systemd/seats", 0755);
1137 mkdir_label("/run/systemd/users", 0755);
1138 mkdir_label("/run/systemd/sessions", 0755);
1146 manager_parse_config_file(m
);
1148 r
= manager_startup(m
);
1150 log_error_errno(r
, "Failed to fully start up daemon: %m");
1154 log_debug("systemd-logind running as pid "PID_FMT
, getpid());
1158 "STATUS=Processing requests...");
1162 log_debug("systemd-logind stopped as pid "PID_FMT
, getpid());
1167 "STATUS=Shutting down...");
1171 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;