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 static void manager_free(Manager
*m
);
44 static Manager
*manager_new(void) {
52 m
->console_active_fd
= -1;
53 m
->reserve_vt_fd
= -1;
58 m
->inhibit_delay_max
= 5 * USEC_PER_SEC
;
59 m
->handle_power_key
= HANDLE_POWEROFF
;
60 m
->handle_suspend_key
= HANDLE_SUSPEND
;
61 m
->handle_hibernate_key
= HANDLE_HIBERNATE
;
62 m
->handle_lid_switch
= HANDLE_SUSPEND
;
63 m
->handle_lid_switch_docked
= HANDLE_IGNORE
;
64 m
->lid_switch_ignore_inhibited
= true;
65 m
->holdoff_timeout_usec
= 30 * USEC_PER_SEC
;
67 m
->idle_action_usec
= 30 * USEC_PER_MINUTE
;
68 m
->idle_action
= HANDLE_IGNORE
;
69 m
->idle_action_not_before_usec
= now(CLOCK_MONOTONIC
);
71 m
->runtime_dir_size
= PAGE_ALIGN((size_t) (physical_memory() / 10)); /* 10% */
72 m
->user_tasks_max
= UINT64_C(12288);
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_(sd_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(PKGSYSCONFDIR
"/logind.conf",
1106 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
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 r
= mac_selinux_init();
1131 log_error_errno(r
, "Could not initialize labelling: %m");
1135 /* Always create the directories people can create inotify
1136 * watches in. Note that some applications might check for the
1137 * existence of /run/systemd/seats/ to determine whether
1138 * logind is available, so please always make sure this check
1140 mkdir_label("/run/systemd/seats", 0755);
1141 mkdir_label("/run/systemd/users", 0755);
1142 mkdir_label("/run/systemd/sessions", 0755);
1150 manager_parse_config_file(m
);
1152 r
= manager_startup(m
);
1154 log_error_errno(r
, "Failed to fully start up daemon: %m");
1158 log_debug("systemd-logind running as pid "PID_FMT
, getpid());
1162 "STATUS=Processing requests...");
1166 log_debug("systemd-logind stopped as pid "PID_FMT
, getpid());
1171 "STATUS=Shutting down...");
1175 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;