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 "conf-parser.h"
32 #include "bus-error.h"
33 #include "udev-util.h"
34 #include "formats-util.h"
35 #include "signal-util.h"
38 static void manager_free(Manager
*m
);
40 static Manager
*manager_new(void) {
48 m
->console_active_fd
= -1;
49 m
->reserve_vt_fd
= -1;
54 m
->inhibit_delay_max
= 5 * USEC_PER_SEC
;
55 m
->handle_power_key
= HANDLE_POWEROFF
;
56 m
->handle_suspend_key
= HANDLE_SUSPEND
;
57 m
->handle_hibernate_key
= HANDLE_HIBERNATE
;
58 m
->handle_lid_switch
= HANDLE_SUSPEND
;
59 m
->handle_lid_switch_docked
= HANDLE_IGNORE
;
60 m
->lid_switch_ignore_inhibited
= true;
61 m
->holdoff_timeout_usec
= 30 * USEC_PER_SEC
;
63 m
->idle_action_usec
= 30 * USEC_PER_MINUTE
;
64 m
->idle_action
= HANDLE_IGNORE
;
65 m
->idle_action_not_before_usec
= now(CLOCK_MONOTONIC
);
67 m
->runtime_dir_size
= PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
69 m
->devices
= hashmap_new(&string_hash_ops
);
70 m
->seats
= hashmap_new(&string_hash_ops
);
71 m
->sessions
= hashmap_new(&string_hash_ops
);
72 m
->users
= hashmap_new(NULL
);
73 m
->inhibitors
= hashmap_new(&string_hash_ops
);
74 m
->buttons
= hashmap_new(&string_hash_ops
);
76 m
->user_units
= hashmap_new(&string_hash_ops
);
77 m
->session_units
= hashmap_new(&string_hash_ops
);
79 if (!m
->devices
|| !m
->seats
|| !m
->sessions
|| !m
->users
|| !m
->inhibitors
|| !m
->buttons
|| !m
->user_units
|| !m
->session_units
)
82 m
->kill_exclude_users
= strv_new("root", NULL
);
83 if (!m
->kill_exclude_users
)
90 r
= sd_event_default(&m
->event
);
94 sd_event_set_watchdog(m
->event
, true);
103 static void manager_free(Manager
*m
) {
113 while ((session
= hashmap_first(m
->sessions
)))
114 session_free(session
);
116 while ((u
= hashmap_first(m
->users
)))
119 while ((d
= hashmap_first(m
->devices
)))
122 while ((s
= hashmap_first(m
->seats
)))
125 while ((i
= hashmap_first(m
->inhibitors
)))
128 while ((b
= hashmap_first(m
->buttons
)))
131 hashmap_free(m
->devices
);
132 hashmap_free(m
->seats
);
133 hashmap_free(m
->sessions
);
134 hashmap_free(m
->users
);
135 hashmap_free(m
->inhibitors
);
136 hashmap_free(m
->buttons
);
138 hashmap_free(m
->user_units
);
139 hashmap_free(m
->session_units
);
141 sd_event_source_unref(m
->idle_action_event_source
);
142 sd_event_source_unref(m
->inhibit_timeout_source
);
143 sd_event_source_unref(m
->scheduled_shutdown_timeout_source
);
144 sd_event_source_unref(m
->nologin_timeout_source
);
145 sd_event_source_unref(m
->wall_message_timeout_source
);
147 sd_event_source_unref(m
->console_active_event_source
);
148 sd_event_source_unref(m
->udev_seat_event_source
);
149 sd_event_source_unref(m
->udev_device_event_source
);
150 sd_event_source_unref(m
->udev_vcsa_event_source
);
151 sd_event_source_unref(m
->udev_button_event_source
);
152 sd_event_source_unref(m
->lid_switch_ignore_event_source
);
154 safe_close(m
->console_active_fd
);
156 udev_monitor_unref(m
->udev_seat_monitor
);
157 udev_monitor_unref(m
->udev_device_monitor
);
158 udev_monitor_unref(m
->udev_vcsa_monitor
);
159 udev_monitor_unref(m
->udev_button_monitor
);
163 if (m
->unlink_nologin
)
164 (void) unlink("/run/nologin");
166 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
168 sd_bus_unref(m
->bus
);
169 sd_event_unref(m
->event
);
171 safe_close(m
->reserve_vt_fd
);
173 strv_free(m
->kill_only_users
);
174 strv_free(m
->kill_exclude_users
);
176 free(m
->scheduled_shutdown_type
);
177 free(m
->scheduled_shutdown_tty
);
178 free(m
->wall_message
);
183 static int manager_enumerate_devices(Manager
*m
) {
184 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
185 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
190 /* Loads devices from udev and creates seats for them as
193 e
= udev_enumerate_new(m
->udev
);
197 r
= udev_enumerate_add_match_tag(e
, "master-of-seat");
201 r
= udev_enumerate_add_match_is_initialized(e
);
205 r
= udev_enumerate_scan_devices(e
);
209 first
= udev_enumerate_get_list_entry(e
);
210 udev_list_entry_foreach(item
, first
) {
211 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
214 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
218 k
= manager_process_seat_device(m
, d
);
226 static int manager_enumerate_buttons(Manager
*m
) {
227 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
228 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
233 /* Loads buttons from udev */
235 if (m
->handle_power_key
== HANDLE_IGNORE
&&
236 m
->handle_suspend_key
== HANDLE_IGNORE
&&
237 m
->handle_hibernate_key
== HANDLE_IGNORE
&&
238 m
->handle_lid_switch
== HANDLE_IGNORE
&&
239 m
->handle_lid_switch_docked
== HANDLE_IGNORE
)
242 e
= udev_enumerate_new(m
->udev
);
246 r
= udev_enumerate_add_match_subsystem(e
, "input");
250 r
= udev_enumerate_add_match_tag(e
, "power-switch");
254 r
= udev_enumerate_add_match_is_initialized(e
);
258 r
= udev_enumerate_scan_devices(e
);
262 first
= udev_enumerate_get_list_entry(e
);
263 udev_list_entry_foreach(item
, first
) {
264 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
267 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
271 k
= manager_process_button_device(m
, d
);
279 static int manager_enumerate_seats(Manager
*m
) {
280 _cleanup_closedir_
DIR *d
= NULL
;
286 /* This loads data about seats stored on disk, but does not
287 * actually create any seats. Removes data of seats that no
290 d
= opendir("/run/systemd/seats");
295 log_error_errno(errno
, "Failed to open /run/systemd/seats: %m");
299 FOREACH_DIRENT(de
, d
, return -errno
) {
303 if (!dirent_is_file(de
))
306 s
= hashmap_get(m
->seats
, de
->d_name
);
308 unlinkat(dirfd(d
), de
->d_name
, 0);
320 static int manager_enumerate_linger_users(Manager
*m
) {
321 _cleanup_closedir_
DIR *d
= NULL
;
327 d
= opendir("/var/lib/systemd/linger");
332 log_error_errno(errno
, "Failed to open /var/lib/systemd/linger/: %m");
336 FOREACH_DIRENT(de
, d
, return -errno
) {
339 if (!dirent_is_file(de
))
342 k
= manager_add_user_by_name(m
, de
->d_name
, NULL
);
344 log_notice_errno(k
, "Couldn't add lingering user %s: %m", de
->d_name
);
352 static int manager_enumerate_users(Manager
*m
) {
353 _cleanup_closedir_
DIR *d
= NULL
;
359 /* Add lingering users */
360 r
= manager_enumerate_linger_users(m
);
362 /* Read in user data stored on disk */
363 d
= opendir("/run/systemd/users");
368 log_error_errno(errno
, "Failed to open /run/systemd/users: %m");
372 FOREACH_DIRENT(de
, d
, return -errno
) {
375 if (!dirent_is_file(de
))
378 k
= manager_add_user_by_name(m
, de
->d_name
, &u
);
380 log_error_errno(k
, "Failed to add user by file name %s: %m", de
->d_name
);
386 user_add_to_gc_queue(u
);
396 static int manager_enumerate_sessions(Manager
*m
) {
397 _cleanup_closedir_
DIR *d
= NULL
;
403 /* Read in session data stored on disk */
404 d
= opendir("/run/systemd/sessions");
409 log_error_errno(errno
, "Failed to open /run/systemd/sessions: %m");
413 FOREACH_DIRENT(de
, d
, return -errno
) {
417 if (!dirent_is_file(de
))
420 if (!session_id_valid(de
->d_name
)) {
421 log_warning("Invalid session file name '%s', ignoring.", de
->d_name
);
426 k
= manager_add_session(m
, de
->d_name
, &s
);
428 log_error_errno(k
, "Failed to add session by file name %s: %m", de
->d_name
);
434 session_add_to_gc_queue(s
);
444 static int manager_enumerate_inhibitors(Manager
*m
) {
445 _cleanup_closedir_
DIR *d
= NULL
;
451 d
= opendir("/run/systemd/inhibit");
456 log_error_errno(errno
, "Failed to open /run/systemd/inhibit: %m");
460 FOREACH_DIRENT(de
, d
, return -errno
) {
464 if (!dirent_is_file(de
))
467 k
= manager_add_inhibitor(m
, de
->d_name
, &i
);
469 log_notice_errno(k
, "Couldn't add inhibitor %s: %m", de
->d_name
);
474 k
= inhibitor_load(i
);
482 static int manager_dispatch_seat_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
483 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
484 Manager
*m
= userdata
;
488 d
= udev_monitor_receive_device(m
->udev_seat_monitor
);
492 manager_process_seat_device(m
, d
);
496 static int manager_dispatch_device_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
497 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
498 Manager
*m
= userdata
;
502 d
= udev_monitor_receive_device(m
->udev_device_monitor
);
506 manager_process_seat_device(m
, d
);
510 static int manager_dispatch_vcsa_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
511 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
512 Manager
*m
= userdata
;
517 d
= udev_monitor_receive_device(m
->udev_vcsa_monitor
);
521 name
= udev_device_get_sysname(d
);
523 /* Whenever a VCSA device is removed try to reallocate our
524 * VTs, to make sure our auto VTs never go away. */
526 if (name
&& startswith(name
, "vcsa") && streq_ptr(udev_device_get_action(d
), "remove"))
527 seat_preallocate_vts(m
->seat0
);
532 static int manager_dispatch_button_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
533 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
534 Manager
*m
= userdata
;
538 d
= udev_monitor_receive_device(m
->udev_button_monitor
);
542 manager_process_button_device(m
, d
);
546 static int manager_dispatch_console(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
547 Manager
*m
= userdata
;
551 assert(m
->console_active_fd
== fd
);
553 seat_read_active_vt(m
->seat0
);
557 static int manager_reserve_vt(Manager
*m
) {
558 _cleanup_free_
char *p
= NULL
;
562 if (m
->reserve_vt
<= 0)
565 if (asprintf(&p
, "/dev/tty%u", m
->reserve_vt
) < 0)
568 m
->reserve_vt_fd
= open(p
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
|O_NONBLOCK
);
569 if (m
->reserve_vt_fd
< 0) {
571 /* Don't complain on VT-less systems */
573 log_warning_errno(errno
, "Failed to pin reserved VT: %m");
580 static int manager_connect_bus(Manager
*m
) {
581 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
587 r
= sd_bus_default_system(&m
->bus
);
589 return log_error_errno(r
, "Failed to connect to system bus: %m");
591 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable
, m
);
593 return log_error_errno(r
, "Failed to add manager object vtable: %m");
595 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable
, seat_object_find
, m
);
597 return log_error_errno(r
, "Failed to add seat object vtable: %m");
599 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/seat", seat_node_enumerator
, m
);
601 return log_error_errno(r
, "Failed to add seat enumerator: %m");
603 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable
, session_object_find
, m
);
605 return log_error_errno(r
, "Failed to add session object vtable: %m");
607 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/session", session_node_enumerator
, m
);
609 return log_error_errno(r
, "Failed to add session enumerator: %m");
611 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable
, user_object_find
, m
);
613 return log_error_errno(r
, "Failed to add user object vtable: %m");
615 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/user", user_node_enumerator
, m
);
617 return log_error_errno(r
, "Failed to add user enumerator: %m");
619 r
= sd_bus_add_match(m
->bus
,
622 "sender='org.freedesktop.systemd1',"
623 "interface='org.freedesktop.systemd1.Manager',"
624 "member='JobRemoved',"
625 "path='/org/freedesktop/systemd1'",
626 match_job_removed
, m
);
628 return log_error_errno(r
, "Failed to add match for JobRemoved: %m");
630 r
= sd_bus_add_match(m
->bus
,
633 "sender='org.freedesktop.systemd1',"
634 "interface='org.freedesktop.systemd1.Manager',"
635 "member='UnitRemoved',"
636 "path='/org/freedesktop/systemd1'",
637 match_unit_removed
, m
);
639 return log_error_errno(r
, "Failed to add match for UnitRemoved: %m");
641 r
= sd_bus_add_match(m
->bus
,
644 "sender='org.freedesktop.systemd1',"
645 "interface='org.freedesktop.DBus.Properties',"
646 "member='PropertiesChanged'",
647 match_properties_changed
, m
);
649 return log_error_errno(r
, "Failed to add match for PropertiesChanged: %m");
651 r
= sd_bus_add_match(m
->bus
,
654 "sender='org.freedesktop.systemd1',"
655 "interface='org.freedesktop.systemd1.Manager',"
656 "member='Reloading',"
657 "path='/org/freedesktop/systemd1'",
660 return log_error_errno(r
, "Failed to add match for Reloading: %m");
662 r
= sd_bus_call_method(
664 "org.freedesktop.systemd1",
665 "/org/freedesktop/systemd1",
666 "org.freedesktop.systemd1.Manager",
671 log_error("Failed to enable subscription: %s", bus_error_message(&error
, r
));
675 r
= sd_bus_request_name(m
->bus
, "org.freedesktop.login1", 0);
677 return log_error_errno(r
, "Failed to register name: %m");
679 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
681 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
686 static int manager_vt_switch(sd_event_source
*src
, const struct signalfd_siginfo
*si
, void *data
) {
688 Session
*active
, *iter
;
691 * We got a VT-switch signal and we have to acknowledge it immediately.
692 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
693 * old user-space might run multiple sessions on a single VT, *sigh*.
694 * Therefore, we have to iterate all sessions and find one with a vtfd
695 * on the requested VT.
696 * As only VTs with active controllers have VT_PROCESS set, our current
697 * notion of the active VT might be wrong (for instance if the switch
698 * happens while we setup VT_PROCESS). Therefore, read the current VT
699 * first and then use s->active->vtnr as reference. Note that this is
700 * not racy, as no further VT-switch can happen as long as we're in
701 * synchronous VT_PROCESS mode.
705 seat_read_active_vt(m
->seat0
);
707 active
= m
->seat0
->active
;
708 if (!active
|| active
->vtnr
< 1) {
709 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
713 if (active
->vtfd
>= 0) {
714 session_leave_vt(active
);
716 LIST_FOREACH(sessions_by_seat
, iter
, m
->seat0
->sessions
) {
717 if (iter
->vtnr
== active
->vtnr
&& iter
->vtfd
>= 0) {
718 session_leave_vt(iter
);
727 static int manager_connect_console(Manager
*m
) {
731 assert(m
->console_active_fd
< 0);
733 /* On certain architectures (S390 and Xen, and containers),
734 /dev/tty0 does not exist, so don't fail if we can't open
736 if (access("/dev/tty0", F_OK
) < 0)
739 m
->console_active_fd
= open("/sys/class/tty/tty0/active", O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
740 if (m
->console_active_fd
< 0) {
742 /* On some systems the device node /dev/tty0 may exist
743 * even though /sys/class/tty/tty0 does not. */
747 log_error_errno(errno
, "Failed to open /sys/class/tty/tty0/active: %m");
751 r
= sd_event_add_io(m
->event
, &m
->console_active_event_source
, m
->console_active_fd
, 0, manager_dispatch_console
, m
);
753 log_error("Failed to watch foreground console");
758 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
759 * as VT-acquire signal. We ignore any acquire-events (yes, we still
760 * have to provide a valid signal-number for it!) and acknowledge all
761 * release events immediately.
764 if (SIGRTMIN
+ 1 > SIGRTMAX
) {
765 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN
, SIGRTMAX
);
769 assert_se(ignore_signals(SIGRTMIN
+ 1, -1) >= 0);
770 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGRTMIN
, -1) >= 0);
772 r
= sd_event_add_signal(m
->event
, NULL
, SIGRTMIN
, manager_vt_switch
, m
);
779 static int manager_connect_udev(Manager
*m
) {
783 assert(!m
->udev_seat_monitor
);
784 assert(!m
->udev_device_monitor
);
785 assert(!m
->udev_vcsa_monitor
);
786 assert(!m
->udev_button_monitor
);
788 m
->udev_seat_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
789 if (!m
->udev_seat_monitor
)
792 r
= udev_monitor_filter_add_match_tag(m
->udev_seat_monitor
, "master-of-seat");
796 r
= udev_monitor_enable_receiving(m
->udev_seat_monitor
);
800 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
);
804 m
->udev_device_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
805 if (!m
->udev_device_monitor
)
808 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "input", NULL
);
812 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "graphics", NULL
);
816 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "drm", NULL
);
820 r
= udev_monitor_enable_receiving(m
->udev_device_monitor
);
824 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
);
828 /* Don't watch keys if nobody cares */
829 if (m
->handle_power_key
!= HANDLE_IGNORE
||
830 m
->handle_suspend_key
!= HANDLE_IGNORE
||
831 m
->handle_hibernate_key
!= HANDLE_IGNORE
||
832 m
->handle_lid_switch
!= HANDLE_IGNORE
||
833 m
->handle_lid_switch_docked
!= HANDLE_IGNORE
) {
835 m
->udev_button_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
836 if (!m
->udev_button_monitor
)
839 r
= udev_monitor_filter_add_match_tag(m
->udev_button_monitor
, "power-switch");
843 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_button_monitor
, "input", NULL
);
847 r
= udev_monitor_enable_receiving(m
->udev_button_monitor
);
851 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
);
856 /* Don't bother watching VCSA devices, if nobody cares */
857 if (m
->n_autovts
> 0 && m
->console_active_fd
>= 0) {
859 m
->udev_vcsa_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
860 if (!m
->udev_vcsa_monitor
)
863 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_vcsa_monitor
, "vc", NULL
);
867 r
= udev_monitor_enable_receiving(m
->udev_vcsa_monitor
);
871 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
);
879 static void manager_gc(Manager
*m
, bool drop_not_started
) {
886 while ((seat
= m
->seat_gc_queue
)) {
887 LIST_REMOVE(gc_queue
, m
->seat_gc_queue
, seat
);
888 seat
->in_gc_queue
= false;
890 if (!seat_check_gc(seat
, drop_not_started
)) {
891 seat_stop(seat
, false);
896 while ((session
= m
->session_gc_queue
)) {
897 LIST_REMOVE(gc_queue
, m
->session_gc_queue
, session
);
898 session
->in_gc_queue
= false;
900 /* First, if we are not closing yet, initiate stopping */
901 if (!session_check_gc(session
, drop_not_started
) &&
902 session_get_state(session
) != SESSION_CLOSING
)
903 session_stop(session
, false);
905 /* Normally, this should make the session referenced
906 * again, if it doesn't then let's get rid of it
908 if (!session_check_gc(session
, drop_not_started
)) {
909 session_finalize(session
);
910 session_free(session
);
914 while ((user
= m
->user_gc_queue
)) {
915 LIST_REMOVE(gc_queue
, m
->user_gc_queue
, user
);
916 user
->in_gc_queue
= false;
918 /* First step: queue stop jobs */
919 if (!user_check_gc(user
, drop_not_started
))
920 user_stop(user
, false);
922 /* Second step: finalize user */
923 if (!user_check_gc(user
, drop_not_started
)) {
930 static int manager_dispatch_idle_action(sd_event_source
*s
, uint64_t t
, void *userdata
) {
931 Manager
*m
= userdata
;
932 struct dual_timestamp since
;
938 if (m
->idle_action
== HANDLE_IGNORE
||
939 m
->idle_action_usec
<= 0)
942 n
= now(CLOCK_MONOTONIC
);
944 r
= manager_get_idle_hint(m
, &since
);
946 /* Not idle. Let's check if after a timeout it might be idle then. */
947 elapse
= n
+ m
->idle_action_usec
;
949 /* Idle! Let's see if it's time to do something, or if
950 * we shall sleep for longer. */
952 if (n
>= since
.monotonic
+ m
->idle_action_usec
&&
953 (m
->idle_action_not_before_usec
<= 0 || n
>= m
->idle_action_not_before_usec
+ m
->idle_action_usec
)) {
954 log_info("System idle. Taking action.");
956 manager_handle_action(m
, 0, m
->idle_action
, false, false);
957 m
->idle_action_not_before_usec
= n
;
960 elapse
= MAX(since
.monotonic
, m
->idle_action_not_before_usec
) + m
->idle_action_usec
;
963 if (!m
->idle_action_event_source
) {
965 r
= sd_event_add_time(
967 &m
->idle_action_event_source
,
969 elapse
, USEC_PER_SEC
*30,
970 manager_dispatch_idle_action
, m
);
972 return log_error_errno(r
, "Failed to add idle event source: %m");
974 r
= sd_event_source_set_priority(m
->idle_action_event_source
, SD_EVENT_PRIORITY_IDLE
+10);
976 return log_error_errno(r
, "Failed to set idle event source priority: %m");
978 r
= sd_event_source_set_time(m
->idle_action_event_source
, elapse
);
980 return log_error_errno(r
, "Failed to set idle event timer: %m");
982 r
= sd_event_source_set_enabled(m
->idle_action_event_source
, SD_EVENT_ONESHOT
);
984 return log_error_errno(r
, "Failed to enable idle event timer: %m");
990 static int manager_startup(Manager
*m
) {
996 Inhibitor
*inhibitor
;
1001 /* Connect to console */
1002 r
= manager_connect_console(m
);
1006 /* Connect to udev */
1007 r
= manager_connect_udev(m
);
1009 return log_error_errno(r
, "Failed to create udev watchers: %m");
1011 /* Connect to the bus */
1012 r
= manager_connect_bus(m
);
1016 /* Instantiate magic seat 0 */
1017 r
= manager_add_seat(m
, "seat0", &m
->seat0
);
1019 return log_error_errno(r
, "Failed to add seat0: %m");
1021 r
= manager_set_lid_switch_ignore(m
, 0 + m
->holdoff_timeout_usec
);
1023 log_warning_errno(r
, "Failed to set up lid switch ignore event source: %m");
1025 /* Deserialize state */
1026 r
= manager_enumerate_devices(m
);
1028 log_warning_errno(r
, "Device enumeration failed: %m");
1030 r
= manager_enumerate_seats(m
);
1032 log_warning_errno(r
, "Seat enumeration failed: %m");
1034 r
= manager_enumerate_users(m
);
1036 log_warning_errno(r
, "User enumeration failed: %m");
1038 r
= manager_enumerate_sessions(m
);
1040 log_warning_errno(r
, "Session enumeration failed: %m");
1042 r
= manager_enumerate_inhibitors(m
);
1044 log_warning_errno(r
, "Inhibitor enumeration failed: %m");
1046 r
= manager_enumerate_buttons(m
);
1048 log_warning_errno(r
, "Button enumeration failed: %m");
1050 /* Remove stale objects before we start them */
1051 manager_gc(m
, false);
1053 /* Reserve the special reserved VT */
1054 manager_reserve_vt(m
);
1056 /* And start everything */
1057 HASHMAP_FOREACH(seat
, m
->seats
, i
)
1060 HASHMAP_FOREACH(user
, m
->users
, i
)
1063 HASHMAP_FOREACH(session
, m
->sessions
, i
)
1064 session_start(session
);
1066 HASHMAP_FOREACH(inhibitor
, m
->inhibitors
, i
)
1067 inhibitor_start(inhibitor
);
1069 HASHMAP_FOREACH(button
, m
->buttons
, i
)
1070 button_check_switches(button
);
1072 manager_dispatch_idle_action(NULL
, 0, m
);
1077 static int manager_run(Manager
*m
) {
1083 r
= sd_event_get_state(m
->event
);
1086 if (r
== SD_EVENT_FINISHED
)
1089 manager_gc(m
, true);
1091 r
= manager_dispatch_delayed(m
, false);
1097 r
= sd_event_run(m
->event
, (uint64_t) -1);
1103 static int manager_parse_config_file(Manager
*m
) {
1106 return config_parse_many("/etc/systemd/logind.conf",
1107 CONF_DIRS_NULSTR("systemd/logind.conf"),
1109 config_item_perf_lookup
, logind_gperf_lookup
,
1113 int main(int argc
, char *argv
[]) {
1117 log_set_target(LOG_TARGET_AUTO
);
1118 log_set_facility(LOG_AUTH
);
1119 log_parse_environment();
1125 log_error("This program takes no arguments.");
1130 /* Always create the directories people can create inotify
1131 * watches in. Note that some applications might check for the
1132 * existence of /run/systemd/seats/ to determine whether
1133 * logind is available, so please always make sure this check
1135 mkdir_label("/run/systemd/seats", 0755);
1136 mkdir_label("/run/systemd/users", 0755);
1137 mkdir_label("/run/systemd/sessions", 0755);
1145 manager_parse_config_file(m
);
1147 r
= manager_startup(m
);
1149 log_error_errno(r
, "Failed to fully start up daemon: %m");
1153 log_debug("systemd-logind running as pid "PID_FMT
, getpid());
1157 "STATUS=Processing requests...");
1161 log_debug("systemd-logind stopped as pid "PID_FMT
, getpid());
1166 "STATUS=Shutting down...");
1170 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;