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 "alloc-util.h"
31 #include "bus-error.h"
33 #include "conf-parser.h"
35 #include "dirent-util.h"
37 #include "formats-util.h"
39 #include "signal-util.h"
41 #include "udev-util.h"
43 static void manager_free(Manager
*m
);
45 static Manager
*manager_new(void) {
53 m
->console_active_fd
= -1;
54 m
->reserve_vt_fd
= -1;
59 m
->inhibit_delay_max
= 5 * USEC_PER_SEC
;
60 m
->handle_power_key
= HANDLE_POWEROFF
;
61 m
->handle_suspend_key
= HANDLE_SUSPEND
;
62 m
->handle_hibernate_key
= HANDLE_HIBERNATE
;
63 m
->handle_lid_switch
= HANDLE_SUSPEND
;
64 m
->handle_lid_switch_docked
= HANDLE_IGNORE
;
65 m
->lid_switch_ignore_inhibited
= true;
66 m
->holdoff_timeout_usec
= 30 * USEC_PER_SEC
;
68 m
->idle_action_usec
= 30 * USEC_PER_MINUTE
;
69 m
->idle_action
= HANDLE_IGNORE
;
70 m
->idle_action_not_before_usec
= now(CLOCK_MONOTONIC
);
72 m
->runtime_dir_size
= PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
74 m
->devices
= hashmap_new(&string_hash_ops
);
75 m
->seats
= hashmap_new(&string_hash_ops
);
76 m
->sessions
= hashmap_new(&string_hash_ops
);
77 m
->users
= hashmap_new(NULL
);
78 m
->inhibitors
= hashmap_new(&string_hash_ops
);
79 m
->buttons
= hashmap_new(&string_hash_ops
);
81 m
->user_units
= hashmap_new(&string_hash_ops
);
82 m
->session_units
= hashmap_new(&string_hash_ops
);
84 if (!m
->devices
|| !m
->seats
|| !m
->sessions
|| !m
->users
|| !m
->inhibitors
|| !m
->buttons
|| !m
->user_units
|| !m
->session_units
)
87 m
->kill_exclude_users
= strv_new("root", NULL
);
88 if (!m
->kill_exclude_users
)
95 r
= sd_event_default(&m
->event
);
99 sd_event_set_watchdog(m
->event
, true);
108 static void manager_free(Manager
*m
) {
118 while ((session
= hashmap_first(m
->sessions
)))
119 session_free(session
);
121 while ((u
= hashmap_first(m
->users
)))
124 while ((d
= hashmap_first(m
->devices
)))
127 while ((s
= hashmap_first(m
->seats
)))
130 while ((i
= hashmap_first(m
->inhibitors
)))
133 while ((b
= hashmap_first(m
->buttons
)))
136 hashmap_free(m
->devices
);
137 hashmap_free(m
->seats
);
138 hashmap_free(m
->sessions
);
139 hashmap_free(m
->users
);
140 hashmap_free(m
->inhibitors
);
141 hashmap_free(m
->buttons
);
143 hashmap_free(m
->user_units
);
144 hashmap_free(m
->session_units
);
146 sd_event_source_unref(m
->idle_action_event_source
);
147 sd_event_source_unref(m
->inhibit_timeout_source
);
148 sd_event_source_unref(m
->scheduled_shutdown_timeout_source
);
149 sd_event_source_unref(m
->nologin_timeout_source
);
150 sd_event_source_unref(m
->wall_message_timeout_source
);
152 sd_event_source_unref(m
->console_active_event_source
);
153 sd_event_source_unref(m
->udev_seat_event_source
);
154 sd_event_source_unref(m
->udev_device_event_source
);
155 sd_event_source_unref(m
->udev_vcsa_event_source
);
156 sd_event_source_unref(m
->udev_button_event_source
);
157 sd_event_source_unref(m
->lid_switch_ignore_event_source
);
159 safe_close(m
->console_active_fd
);
161 udev_monitor_unref(m
->udev_seat_monitor
);
162 udev_monitor_unref(m
->udev_device_monitor
);
163 udev_monitor_unref(m
->udev_vcsa_monitor
);
164 udev_monitor_unref(m
->udev_button_monitor
);
168 if (m
->unlink_nologin
)
169 (void) unlink("/run/nologin");
171 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
173 sd_bus_unref(m
->bus
);
174 sd_event_unref(m
->event
);
176 safe_close(m
->reserve_vt_fd
);
178 strv_free(m
->kill_only_users
);
179 strv_free(m
->kill_exclude_users
);
181 free(m
->scheduled_shutdown_type
);
182 free(m
->scheduled_shutdown_tty
);
183 free(m
->wall_message
);
188 static int manager_enumerate_devices(Manager
*m
) {
189 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
190 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
195 /* Loads devices from udev and creates seats for them as
198 e
= udev_enumerate_new(m
->udev
);
202 r
= udev_enumerate_add_match_tag(e
, "master-of-seat");
206 r
= udev_enumerate_add_match_is_initialized(e
);
210 r
= udev_enumerate_scan_devices(e
);
214 first
= udev_enumerate_get_list_entry(e
);
215 udev_list_entry_foreach(item
, first
) {
216 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
219 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
223 k
= manager_process_seat_device(m
, d
);
231 static int manager_enumerate_buttons(Manager
*m
) {
232 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
233 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
238 /* Loads buttons from udev */
240 if (m
->handle_power_key
== HANDLE_IGNORE
&&
241 m
->handle_suspend_key
== HANDLE_IGNORE
&&
242 m
->handle_hibernate_key
== HANDLE_IGNORE
&&
243 m
->handle_lid_switch
== HANDLE_IGNORE
&&
244 m
->handle_lid_switch_docked
== HANDLE_IGNORE
)
247 e
= udev_enumerate_new(m
->udev
);
251 r
= udev_enumerate_add_match_subsystem(e
, "input");
255 r
= udev_enumerate_add_match_tag(e
, "power-switch");
259 r
= udev_enumerate_add_match_is_initialized(e
);
263 r
= udev_enumerate_scan_devices(e
);
267 first
= udev_enumerate_get_list_entry(e
);
268 udev_list_entry_foreach(item
, first
) {
269 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
272 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
276 k
= manager_process_button_device(m
, d
);
284 static int manager_enumerate_seats(Manager
*m
) {
285 _cleanup_closedir_
DIR *d
= NULL
;
291 /* This loads data about seats stored on disk, but does not
292 * actually create any seats. Removes data of seats that no
295 d
= opendir("/run/systemd/seats");
300 return log_error_errno(errno
, "Failed to open /run/systemd/seats: %m");
303 FOREACH_DIRENT(de
, d
, return -errno
) {
307 if (!dirent_is_file(de
))
310 s
= hashmap_get(m
->seats
, de
->d_name
);
312 unlinkat(dirfd(d
), de
->d_name
, 0);
324 static int manager_enumerate_linger_users(Manager
*m
) {
325 _cleanup_closedir_
DIR *d
= NULL
;
331 d
= opendir("/var/lib/systemd/linger");
336 return log_error_errno(errno
, "Failed to open /var/lib/systemd/linger/: %m");
339 FOREACH_DIRENT(de
, d
, return -errno
) {
342 if (!dirent_is_file(de
))
345 k
= manager_add_user_by_name(m
, de
->d_name
, NULL
);
347 log_notice_errno(k
, "Couldn't add lingering user %s: %m", de
->d_name
);
355 static int manager_enumerate_users(Manager
*m
) {
356 _cleanup_closedir_
DIR *d
= NULL
;
362 /* Add lingering users */
363 r
= manager_enumerate_linger_users(m
);
365 /* Read in user data stored on disk */
366 d
= opendir("/run/systemd/users");
371 return log_error_errno(errno
, "Failed to open /run/systemd/users: %m");
374 FOREACH_DIRENT(de
, d
, return -errno
) {
377 if (!dirent_is_file(de
))
380 k
= manager_add_user_by_name(m
, de
->d_name
, &u
);
382 log_error_errno(k
, "Failed to add user by file name %s: %m", de
->d_name
);
388 user_add_to_gc_queue(u
);
398 static int manager_enumerate_sessions(Manager
*m
) {
399 _cleanup_closedir_
DIR *d
= NULL
;
405 /* Read in session data stored on disk */
406 d
= opendir("/run/systemd/sessions");
411 return 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 return 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 return log_error_errno(errno
, "Failed to open /sys/class/tty/tty0/active: %m");
750 r
= sd_event_add_io(m
->event
, &m
->console_active_event_source
, m
->console_active_fd
, 0, manager_dispatch_console
, m
);
752 log_error("Failed to watch foreground console");
757 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
758 * as VT-acquire signal. We ignore any acquire-events (yes, we still
759 * have to provide a valid signal-number for it!) and acknowledge all
760 * release events immediately.
763 if (SIGRTMIN
+ 1 > SIGRTMAX
) {
764 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN
, SIGRTMAX
);
768 assert_se(ignore_signals(SIGRTMIN
+ 1, -1) >= 0);
769 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGRTMIN
, -1) >= 0);
771 r
= sd_event_add_signal(m
->event
, NULL
, SIGRTMIN
, manager_vt_switch
, m
);
778 static int manager_connect_udev(Manager
*m
) {
782 assert(!m
->udev_seat_monitor
);
783 assert(!m
->udev_device_monitor
);
784 assert(!m
->udev_vcsa_monitor
);
785 assert(!m
->udev_button_monitor
);
787 m
->udev_seat_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
788 if (!m
->udev_seat_monitor
)
791 r
= udev_monitor_filter_add_match_tag(m
->udev_seat_monitor
, "master-of-seat");
795 r
= udev_monitor_enable_receiving(m
->udev_seat_monitor
);
799 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
);
803 m
->udev_device_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
804 if (!m
->udev_device_monitor
)
807 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "input", NULL
);
811 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "graphics", NULL
);
815 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "drm", NULL
);
819 r
= udev_monitor_enable_receiving(m
->udev_device_monitor
);
823 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
);
827 /* Don't watch keys if nobody cares */
828 if (m
->handle_power_key
!= HANDLE_IGNORE
||
829 m
->handle_suspend_key
!= HANDLE_IGNORE
||
830 m
->handle_hibernate_key
!= HANDLE_IGNORE
||
831 m
->handle_lid_switch
!= HANDLE_IGNORE
||
832 m
->handle_lid_switch_docked
!= HANDLE_IGNORE
) {
834 m
->udev_button_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
835 if (!m
->udev_button_monitor
)
838 r
= udev_monitor_filter_add_match_tag(m
->udev_button_monitor
, "power-switch");
842 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_button_monitor
, "input", NULL
);
846 r
= udev_monitor_enable_receiving(m
->udev_button_monitor
);
850 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
);
855 /* Don't bother watching VCSA devices, if nobody cares */
856 if (m
->n_autovts
> 0 && m
->console_active_fd
>= 0) {
858 m
->udev_vcsa_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
859 if (!m
->udev_vcsa_monitor
)
862 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_vcsa_monitor
, "vc", NULL
);
866 r
= udev_monitor_enable_receiving(m
->udev_vcsa_monitor
);
870 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
);
878 static void manager_gc(Manager
*m
, bool drop_not_started
) {
885 while ((seat
= m
->seat_gc_queue
)) {
886 LIST_REMOVE(gc_queue
, m
->seat_gc_queue
, seat
);
887 seat
->in_gc_queue
= false;
889 if (!seat_check_gc(seat
, drop_not_started
)) {
890 seat_stop(seat
, false);
895 while ((session
= m
->session_gc_queue
)) {
896 LIST_REMOVE(gc_queue
, m
->session_gc_queue
, session
);
897 session
->in_gc_queue
= false;
899 /* First, if we are not closing yet, initiate stopping */
900 if (!session_check_gc(session
, drop_not_started
) &&
901 session_get_state(session
) != SESSION_CLOSING
)
902 session_stop(session
, false);
904 /* Normally, this should make the session referenced
905 * again, if it doesn't then let's get rid of it
907 if (!session_check_gc(session
, drop_not_started
)) {
908 session_finalize(session
);
909 session_free(session
);
913 while ((user
= m
->user_gc_queue
)) {
914 LIST_REMOVE(gc_queue
, m
->user_gc_queue
, user
);
915 user
->in_gc_queue
= false;
917 /* First step: queue stop jobs */
918 if (!user_check_gc(user
, drop_not_started
))
919 user_stop(user
, false);
921 /* Second step: finalize user */
922 if (!user_check_gc(user
, drop_not_started
)) {
929 static int manager_dispatch_idle_action(sd_event_source
*s
, uint64_t t
, void *userdata
) {
930 Manager
*m
= userdata
;
931 struct dual_timestamp since
;
937 if (m
->idle_action
== HANDLE_IGNORE
||
938 m
->idle_action_usec
<= 0)
941 n
= now(CLOCK_MONOTONIC
);
943 r
= manager_get_idle_hint(m
, &since
);
945 /* Not idle. Let's check if after a timeout it might be idle then. */
946 elapse
= n
+ m
->idle_action_usec
;
948 /* Idle! Let's see if it's time to do something, or if
949 * we shall sleep for longer. */
951 if (n
>= since
.monotonic
+ m
->idle_action_usec
&&
952 (m
->idle_action_not_before_usec
<= 0 || n
>= m
->idle_action_not_before_usec
+ m
->idle_action_usec
)) {
953 log_info("System idle. Taking action.");
955 manager_handle_action(m
, 0, m
->idle_action
, false, false);
956 m
->idle_action_not_before_usec
= n
;
959 elapse
= MAX(since
.monotonic
, m
->idle_action_not_before_usec
) + m
->idle_action_usec
;
962 if (!m
->idle_action_event_source
) {
964 r
= sd_event_add_time(
966 &m
->idle_action_event_source
,
968 elapse
, USEC_PER_SEC
*30,
969 manager_dispatch_idle_action
, m
);
971 return log_error_errno(r
, "Failed to add idle event source: %m");
973 r
= sd_event_source_set_priority(m
->idle_action_event_source
, SD_EVENT_PRIORITY_IDLE
+10);
975 return log_error_errno(r
, "Failed to set idle event source priority: %m");
977 r
= sd_event_source_set_time(m
->idle_action_event_source
, elapse
);
979 return log_error_errno(r
, "Failed to set idle event timer: %m");
981 r
= sd_event_source_set_enabled(m
->idle_action_event_source
, SD_EVENT_ONESHOT
);
983 return log_error_errno(r
, "Failed to enable idle event timer: %m");
989 static int manager_startup(Manager
*m
) {
995 Inhibitor
*inhibitor
;
1000 /* Connect to console */
1001 r
= manager_connect_console(m
);
1005 /* Connect to udev */
1006 r
= manager_connect_udev(m
);
1008 return log_error_errno(r
, "Failed to create udev watchers: %m");
1010 /* Connect to the bus */
1011 r
= manager_connect_bus(m
);
1015 /* Instantiate magic seat 0 */
1016 r
= manager_add_seat(m
, "seat0", &m
->seat0
);
1018 return log_error_errno(r
, "Failed to add seat0: %m");
1020 r
= manager_set_lid_switch_ignore(m
, 0 + m
->holdoff_timeout_usec
);
1022 log_warning_errno(r
, "Failed to set up lid switch ignore event source: %m");
1024 /* Deserialize state */
1025 r
= manager_enumerate_devices(m
);
1027 log_warning_errno(r
, "Device enumeration failed: %m");
1029 r
= manager_enumerate_seats(m
);
1031 log_warning_errno(r
, "Seat enumeration failed: %m");
1033 r
= manager_enumerate_users(m
);
1035 log_warning_errno(r
, "User enumeration failed: %m");
1037 r
= manager_enumerate_sessions(m
);
1039 log_warning_errno(r
, "Session enumeration failed: %m");
1041 r
= manager_enumerate_inhibitors(m
);
1043 log_warning_errno(r
, "Inhibitor enumeration failed: %m");
1045 r
= manager_enumerate_buttons(m
);
1047 log_warning_errno(r
, "Button enumeration failed: %m");
1049 /* Remove stale objects before we start them */
1050 manager_gc(m
, false);
1052 /* Reserve the special reserved VT */
1053 manager_reserve_vt(m
);
1055 /* And start everything */
1056 HASHMAP_FOREACH(seat
, m
->seats
, i
)
1059 HASHMAP_FOREACH(user
, m
->users
, i
)
1062 HASHMAP_FOREACH(session
, m
->sessions
, i
)
1063 session_start(session
);
1065 HASHMAP_FOREACH(inhibitor
, m
->inhibitors
, i
)
1066 inhibitor_start(inhibitor
);
1068 HASHMAP_FOREACH(button
, m
->buttons
, i
)
1069 button_check_switches(button
);
1071 manager_dispatch_idle_action(NULL
, 0, m
);
1076 static int manager_run(Manager
*m
) {
1082 r
= sd_event_get_state(m
->event
);
1085 if (r
== SD_EVENT_FINISHED
)
1088 manager_gc(m
, true);
1090 r
= manager_dispatch_delayed(m
, false);
1096 r
= sd_event_run(m
->event
, (uint64_t) -1);
1102 static int manager_parse_config_file(Manager
*m
) {
1105 return config_parse_many("/etc/systemd/logind.conf",
1106 CONF_DIRS_NULSTR("systemd/logind.conf"),
1108 config_item_perf_lookup
, logind_gperf_lookup
,
1112 int main(int argc
, char *argv
[]) {
1116 log_set_target(LOG_TARGET_AUTO
);
1117 log_set_facility(LOG_AUTH
);
1118 log_parse_environment();
1124 log_error("This program takes no arguments.");
1129 /* Always create the directories people can create inotify
1130 * watches in. Note that some applications might check for the
1131 * existence of /run/systemd/seats/ to determine whether
1132 * logind is available, so please always make sure this check
1134 mkdir_label("/run/systemd/seats", 0755);
1135 mkdir_label("/run/systemd/users", 0755);
1136 mkdir_label("/run/systemd/sessions", 0755);
1144 manager_parse_config_file(m
);
1146 r
= manager_startup(m
);
1148 log_error_errno(r
, "Failed to fully start up daemon: %m");
1152 log_debug("systemd-logind running as pid "PID_FMT
, getpid());
1156 "STATUS=Processing requests...");
1160 log_debug("systemd-logind stopped as pid "PID_FMT
, getpid());
1165 "STATUS=Shutting down...");
1169 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;