1 /* SPDX-License-Identifier: LGPL-2.1+ */
11 #include "alloc-util.h"
12 #include "bus-error.h"
14 #include "cgroup-util.h"
16 #include "device-util.h"
17 #include "dirent-util.h"
19 #include "format-util.h"
22 #include "main-func.h"
23 #include "parse-util.h"
24 #include "process-util.h"
25 #include "selinux-util.h"
26 #include "signal-util.h"
28 #include "terminal-util.h"
30 static Manager
* manager_unref(Manager
*m
);
31 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager
*, manager_unref
);
33 static int manager_new(Manager
**ret
) {
34 _cleanup_(manager_unrefp
) Manager
*m
= NULL
;
44 .console_active_fd
= -1,
48 m
->idle_action_not_before_usec
= now(CLOCK_MONOTONIC
);
50 m
->devices
= hashmap_new(&string_hash_ops
);
51 m
->seats
= hashmap_new(&string_hash_ops
);
52 m
->sessions
= hashmap_new(&string_hash_ops
);
53 m
->sessions_by_leader
= hashmap_new(NULL
);
54 m
->users
= hashmap_new(NULL
);
55 m
->inhibitors
= hashmap_new(&string_hash_ops
);
56 m
->buttons
= hashmap_new(&string_hash_ops
);
58 m
->user_units
= hashmap_new(&string_hash_ops
);
59 m
->session_units
= hashmap_new(&string_hash_ops
);
61 if (!m
->devices
|| !m
->seats
|| !m
->sessions
|| !m
->sessions_by_leader
|| !m
->users
|| !m
->inhibitors
|| !m
->buttons
|| !m
->user_units
|| !m
->session_units
)
64 r
= sd_event_default(&m
->event
);
68 r
= sd_event_add_signal(m
->event
, NULL
, SIGINT
, NULL
, NULL
);
72 r
= sd_event_add_signal(m
->event
, NULL
, SIGTERM
, NULL
, NULL
);
76 (void) sd_event_set_watchdog(m
->event
, true);
78 manager_reset_config(m
);
84 static Manager
* manager_unref(Manager
*m
) {
95 while ((session
= hashmap_first(m
->sessions
)))
96 session_free(session
);
98 while ((u
= hashmap_first(m
->users
)))
101 while ((d
= hashmap_first(m
->devices
)))
104 while ((s
= hashmap_first(m
->seats
)))
107 while ((i
= hashmap_first(m
->inhibitors
)))
110 while ((b
= hashmap_first(m
->buttons
)))
113 hashmap_free(m
->devices
);
114 hashmap_free(m
->seats
);
115 hashmap_free(m
->sessions
);
116 hashmap_free(m
->sessions_by_leader
);
117 hashmap_free(m
->users
);
118 hashmap_free(m
->inhibitors
);
119 hashmap_free(m
->buttons
);
121 hashmap_free(m
->user_units
);
122 hashmap_free(m
->session_units
);
124 sd_event_source_unref(m
->idle_action_event_source
);
125 sd_event_source_unref(m
->inhibit_timeout_source
);
126 sd_event_source_unref(m
->scheduled_shutdown_timeout_source
);
127 sd_event_source_unref(m
->nologin_timeout_source
);
128 sd_event_source_unref(m
->wall_message_timeout_source
);
130 sd_event_source_unref(m
->console_active_event_source
);
131 sd_event_source_unref(m
->lid_switch_ignore_event_source
);
134 sd_event_source_unref(m
->utmp_event_source
);
137 safe_close(m
->console_active_fd
);
139 sd_device_monitor_unref(m
->device_seat_monitor
);
140 sd_device_monitor_unref(m
->device_monitor
);
141 sd_device_monitor_unref(m
->device_vcsa_monitor
);
142 sd_device_monitor_unref(m
->device_button_monitor
);
144 if (m
->unlink_nologin
)
145 (void) unlink_or_warn("/run/nologin");
147 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
149 sd_bus_flush_close_unref(m
->bus
);
150 sd_event_unref(m
->event
);
152 safe_close(m
->reserve_vt_fd
);
154 strv_free(m
->kill_only_users
);
155 strv_free(m
->kill_exclude_users
);
157 free(m
->scheduled_shutdown_type
);
158 free(m
->scheduled_shutdown_tty
);
159 free(m
->wall_message
);
165 static int manager_enumerate_devices(Manager
*m
) {
166 _cleanup_(sd_device_enumerator_unrefp
) sd_device_enumerator
*e
= NULL
;
172 /* Loads devices from udev and creates seats for them as
175 r
= sd_device_enumerator_new(&e
);
179 r
= sd_device_enumerator_add_match_tag(e
, "master-of-seat");
183 FOREACH_DEVICE(e
, d
) {
186 k
= manager_process_seat_device(m
, d
);
194 static int manager_enumerate_buttons(Manager
*m
) {
195 _cleanup_(sd_device_enumerator_unrefp
) sd_device_enumerator
*e
= NULL
;
201 /* Loads buttons from udev */
203 if (manager_all_buttons_ignored(m
))
206 r
= sd_device_enumerator_new(&e
);
210 r
= sd_device_enumerator_add_match_subsystem(e
, "input", true);
214 r
= sd_device_enumerator_add_match_tag(e
, "power-switch");
218 FOREACH_DEVICE(e
, d
) {
221 k
= manager_process_button_device(m
, d
);
229 static int manager_enumerate_seats(Manager
*m
) {
230 _cleanup_closedir_
DIR *d
= NULL
;
236 /* This loads data about seats stored on disk, but does not
237 * actually create any seats. Removes data of seats that no
240 d
= opendir("/run/systemd/seats");
245 return log_error_errno(errno
, "Failed to open /run/systemd/seats: %m");
248 FOREACH_DIRENT(de
, d
, return -errno
) {
252 if (!dirent_is_file(de
))
255 s
= hashmap_get(m
->seats
, de
->d_name
);
257 if (unlinkat(dirfd(d
), de
->d_name
, 0) < 0)
258 log_warning("Failed to remove /run/systemd/seats/%s: %m",
271 static int manager_enumerate_linger_users(Manager
*m
) {
272 _cleanup_closedir_
DIR *d
= NULL
;
278 d
= opendir("/var/lib/systemd/linger");
283 return log_error_errno(errno
, "Failed to open /var/lib/systemd/linger/: %m");
286 FOREACH_DIRENT(de
, d
, return -errno
) {
289 if (!dirent_is_file(de
))
292 k
= manager_add_user_by_name(m
, de
->d_name
, NULL
);
294 log_notice_errno(k
, "Couldn't add lingering user %s: %m", de
->d_name
);
302 static int manager_enumerate_users(Manager
*m
) {
303 _cleanup_closedir_
DIR *d
= NULL
;
309 /* Add lingering users */
310 r
= manager_enumerate_linger_users(m
);
312 /* Read in user data stored on disk */
313 d
= opendir("/run/systemd/users");
318 return log_error_errno(errno
, "Failed to open /run/systemd/users: %m");
321 FOREACH_DIRENT(de
, d
, return -errno
) {
324 if (!dirent_is_file(de
))
327 k
= manager_add_user_by_name(m
, de
->d_name
, &u
);
329 log_error_errno(k
, "Failed to add user by file name %s: %m", de
->d_name
);
335 user_add_to_gc_queue(u
);
345 static int parse_fdname(const char *fdname
, char **session_id
, dev_t
*dev
) {
346 _cleanup_strv_free_
char **parts
= NULL
;
347 _cleanup_free_
char *id
= NULL
;
348 unsigned major
, minor
;
351 parts
= strv_split(fdname
, "-");
354 if (strv_length(parts
) != 5)
357 if (!streq(parts
[0], "session"))
360 id
= strdup(parts
[1]);
364 if (!streq(parts
[2], "device"))
367 r
= safe_atou(parts
[3], &major
);
370 r
= safe_atou(parts
[4], &minor
);
374 *dev
= makedev(major
, minor
);
375 *session_id
= TAKE_PTR(id
);
380 static int manager_attach_fds(Manager
*m
) {
381 _cleanup_strv_free_
char **fdnames
= NULL
;
384 /* Upon restart, PID1 will send us back all fds of session devices
385 * that we previously opened. Each file descriptor is associated
386 * with a given session. The session ids are passed through FDNAMES. */
388 n
= sd_listen_fds_with_names(true, &fdnames
);
392 for (i
= 0; i
< n
; i
++) {
393 _cleanup_free_
char *id
= NULL
;
400 fd
= SD_LISTEN_FDS_START
+ i
;
402 r
= parse_fdname(fdnames
[i
], &id
, &dev
);
404 log_debug_errno(r
, "Failed to parse fd name %s: %m", fdnames
[i
]);
409 s
= hashmap_get(m
->sessions
, id
);
411 /* If the session doesn't exist anymore, the associated session
412 * device attached to this fd doesn't either. Let's simply close
414 log_debug("Failed to attach fd for unknown session: %s", id
);
419 if (fstat(fd
, &st
) < 0) {
420 /* The device is allowed to go away at a random point, in which
421 * case fstat failing is expected. */
422 log_debug_errno(errno
, "Failed to stat device fd for session %s: %m", id
);
427 if (!S_ISCHR(st
.st_mode
) || st
.st_rdev
!= dev
) {
428 log_debug("Device fd doesn't point to the expected character device node");
433 sd
= hashmap_get(s
->devices
, &dev
);
435 /* Weird, we got an fd for a session device which wasn't
436 * recorded in the session state file... */
437 log_warning("Got fd for missing session device [%u:%u] in session %s",
438 major(dev
), minor(dev
), s
->id
);
443 log_debug("Attaching fd to session device [%u:%u] for session %s",
444 major(dev
), minor(dev
), s
->id
);
446 session_device_attach_fd(sd
, fd
, s
->was_active
);
452 static int manager_enumerate_sessions(Manager
*m
) {
453 _cleanup_closedir_
DIR *d
= NULL
;
459 /* Read in session data stored on disk */
460 d
= opendir("/run/systemd/sessions");
465 return log_error_errno(errno
, "Failed to open /run/systemd/sessions: %m");
468 FOREACH_DIRENT(de
, d
, return -errno
) {
471 if (!dirent_is_file(de
))
474 if (!session_id_valid(de
->d_name
)) {
475 log_warning("Invalid session file name '%s', ignoring.", de
->d_name
);
480 k
= manager_add_session(m
, de
->d_name
, &s
);
482 log_error_errno(k
, "Failed to add session by file name %s: %m", de
->d_name
);
487 session_add_to_gc_queue(s
);
494 /* We might be restarted and PID1 could have sent us back the
495 * session device fds we previously saved. */
496 k
= manager_attach_fds(m
);
498 log_warning_errno(k
, "Failed to reattach session device fds: %m");
503 static int manager_enumerate_inhibitors(Manager
*m
) {
504 _cleanup_closedir_
DIR *d
= NULL
;
510 d
= opendir("/run/systemd/inhibit");
515 return log_error_errno(errno
, "Failed to open /run/systemd/inhibit: %m");
518 FOREACH_DIRENT(de
, d
, return -errno
) {
522 if (!dirent_is_file(de
))
525 k
= manager_add_inhibitor(m
, de
->d_name
, &i
);
527 log_notice_errno(k
, "Couldn't add inhibitor %s: %m", de
->d_name
);
532 k
= inhibitor_load(i
);
540 static int manager_dispatch_seat_udev(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
541 Manager
*m
= userdata
;
546 manager_process_seat_device(m
, device
);
550 static int manager_dispatch_device_udev(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
551 Manager
*m
= userdata
;
556 manager_process_seat_device(m
, device
);
560 static int manager_dispatch_vcsa_udev(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
561 Manager
*m
= userdata
;
562 const char *name
, *action
;
567 /* Whenever a VCSA device is removed try to reallocate our
568 * VTs, to make sure our auto VTs never go away. */
570 if (sd_device_get_sysname(device
, &name
) >= 0 &&
571 startswith(name
, "vcsa") &&
572 sd_device_get_property_value(device
, "ACTION", &action
) >= 0 &&
573 streq(action
, "remove"))
574 seat_preallocate_vts(m
->seat0
);
579 static int manager_dispatch_button_udev(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
580 Manager
*m
= userdata
;
585 manager_process_button_device(m
, device
);
589 static int manager_dispatch_console(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
590 Manager
*m
= userdata
;
594 assert(m
->console_active_fd
== fd
);
596 seat_read_active_vt(m
->seat0
);
600 static int manager_reserve_vt(Manager
*m
) {
601 _cleanup_free_
char *p
= NULL
;
605 if (m
->reserve_vt
<= 0)
608 if (asprintf(&p
, "/dev/tty%u", m
->reserve_vt
) < 0)
611 m
->reserve_vt_fd
= open(p
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
|O_NONBLOCK
);
612 if (m
->reserve_vt_fd
< 0) {
614 /* Don't complain on VT-less systems */
616 log_warning_errno(errno
, "Failed to pin reserved VT: %m");
623 static int manager_connect_bus(Manager
*m
) {
629 r
= sd_bus_default_system(&m
->bus
);
631 return log_error_errno(r
, "Failed to connect to system bus: %m");
633 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable
, m
);
635 return log_error_errno(r
, "Failed to add manager object vtable: %m");
637 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable
, seat_object_find
, m
);
639 return log_error_errno(r
, "Failed to add seat object vtable: %m");
641 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/seat", seat_node_enumerator
, m
);
643 return log_error_errno(r
, "Failed to add seat enumerator: %m");
645 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable
, session_object_find
, m
);
647 return log_error_errno(r
, "Failed to add session object vtable: %m");
649 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/session", session_node_enumerator
, m
);
651 return log_error_errno(r
, "Failed to add session enumerator: %m");
653 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable
, user_object_find
, m
);
655 return log_error_errno(r
, "Failed to add user object vtable: %m");
657 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/user", user_node_enumerator
, m
);
659 return log_error_errno(r
, "Failed to add user enumerator: %m");
661 r
= sd_bus_match_signal_async(
664 "org.freedesktop.systemd1",
665 "/org/freedesktop/systemd1",
666 "org.freedesktop.systemd1.Manager",
668 match_job_removed
, NULL
, m
);
670 return log_error_errno(r
, "Failed to request match for JobRemoved: %m");
672 r
= sd_bus_match_signal_async(
675 "org.freedesktop.systemd1",
676 "/org/freedesktop/systemd1",
677 "org.freedesktop.systemd1.Manager",
679 match_unit_removed
, NULL
, m
);
681 return log_error_errno(r
, "Failed to request match for UnitRemoved: %m");
683 r
= sd_bus_match_signal_async(
686 "org.freedesktop.systemd1",
688 "org.freedesktop.DBus.Properties",
690 match_properties_changed
, NULL
, m
);
692 return log_error_errno(r
, "Failed to request match for PropertiesChanged: %m");
694 r
= sd_bus_match_signal_async(
697 "org.freedesktop.systemd1",
698 "/org/freedesktop/systemd1",
699 "org.freedesktop.systemd1.Manager",
701 match_reloading
, NULL
, m
);
703 return log_error_errno(r
, "Failed to request match for Reloading: %m");
705 r
= sd_bus_call_method_async(
708 "org.freedesktop.systemd1",
709 "/org/freedesktop/systemd1",
710 "org.freedesktop.systemd1.Manager",
715 return log_error_errno(r
, "Failed to enable subscription: %m");
717 r
= sd_bus_request_name_async(m
->bus
, NULL
, "org.freedesktop.login1", 0, NULL
, NULL
);
719 return log_error_errno(r
, "Failed to request name: %m");
721 r
= sd_bus_attach_event(m
->bus
, m
->event
, SD_EVENT_PRIORITY_NORMAL
);
723 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
728 static int manager_vt_switch(sd_event_source
*src
, const struct signalfd_siginfo
*si
, void *data
) {
730 Session
*active
, *iter
;
733 * We got a VT-switch signal and we have to acknowledge it immediately.
734 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
735 * old user-space might run multiple sessions on a single VT, *sigh*.
736 * Therefore, we have to iterate all sessions and find one with a vtfd
737 * on the requested VT.
738 * As only VTs with active controllers have VT_PROCESS set, our current
739 * notion of the active VT might be wrong (for instance if the switch
740 * happens while we setup VT_PROCESS). Therefore, read the current VT
741 * first and then use s->active->vtnr as reference. Note that this is
742 * not racy, as no further VT-switch can happen as long as we're in
743 * synchronous VT_PROCESS mode.
747 seat_read_active_vt(m
->seat0
);
749 active
= m
->seat0
->active
;
750 if (!active
|| active
->vtnr
< 1) {
751 _cleanup_close_
int fd
= -1;
754 /* We are requested to acknowledge the VT-switch signal by the kernel but
755 * there's no registered sessions for the current VT. Normally this
756 * shouldn't happen but something wrong might have happened when we tried
757 * to release the VT. Better be safe than sorry, and try to release the VT
758 * one more time otherwise the user will be locked with the current VT. */
760 log_warning("Received VT_PROCESS signal without a registered session, restoring VT.");
762 /* At this point we only have the kernel mapping for referring to the
764 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
|O_NONBLOCK
);
766 log_warning_errno(fd
, "Failed to open, ignoring: %m");
770 r
= vt_release(fd
, true);
772 log_warning_errno(r
, "Failed to release VT, ignoring: %m");
777 if (active
->vtfd
>= 0) {
778 session_leave_vt(active
);
780 LIST_FOREACH(sessions_by_seat
, iter
, m
->seat0
->sessions
) {
781 if (iter
->vtnr
== active
->vtnr
&& iter
->vtfd
>= 0) {
782 session_leave_vt(iter
);
791 static int manager_connect_console(Manager
*m
) {
795 assert(m
->console_active_fd
< 0);
797 /* On certain systems (such as S390, Xen, and containers) /dev/tty0 does not exist (as there is no VC), so
798 * don't fail if we can't open it. */
800 if (access("/dev/tty0", F_OK
) < 0)
803 m
->console_active_fd
= open("/sys/class/tty/tty0/active", O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
804 if (m
->console_active_fd
< 0) {
806 /* On some systems /dev/tty0 may exist even though /sys/class/tty/tty0 does not. These are broken, but
807 * common. Let's complain but continue anyway. */
808 if (errno
== ENOENT
) {
809 log_warning_errno(errno
, "System has /dev/tty0 but not /sys/class/tty/tty0/active which is broken, ignoring: %m");
813 return log_error_errno(errno
, "Failed to open /sys/class/tty/tty0/active: %m");
816 r
= sd_event_add_io(m
->event
, &m
->console_active_event_source
, m
->console_active_fd
, 0, manager_dispatch_console
, m
);
818 return log_error_errno(r
, "Failed to watch foreground console: %m");
821 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
822 * as VT-acquire signal. We ignore any acquire-events (yes, we still
823 * have to provide a valid signal-number for it!) and acknowledge all
824 * release events immediately.
827 if (SIGRTMIN
+ 1 > SIGRTMAX
)
828 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
829 "Not enough real-time signals available: %u-%u",
832 assert_se(ignore_signals(SIGRTMIN
+ 1, -1) >= 0);
833 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGRTMIN
, -1) >= 0);
835 r
= sd_event_add_signal(m
->event
, NULL
, SIGRTMIN
, manager_vt_switch
, m
);
837 return log_error_errno(r
, "Failed to subscribe to signal: %m");
842 static int manager_connect_udev(Manager
*m
) {
846 assert(!m
->device_seat_monitor
);
847 assert(!m
->device_monitor
);
848 assert(!m
->device_vcsa_monitor
);
849 assert(!m
->device_button_monitor
);
851 r
= sd_device_monitor_new(&m
->device_seat_monitor
);
855 r
= sd_device_monitor_filter_add_match_tag(m
->device_seat_monitor
, "master-of-seat");
859 r
= sd_device_monitor_attach_event(m
->device_seat_monitor
, m
->event
);
863 r
= sd_device_monitor_start(m
->device_seat_monitor
, manager_dispatch_seat_udev
, m
);
867 (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m
->device_seat_monitor
), "logind-seat-monitor");
869 r
= sd_device_monitor_new(&m
->device_monitor
);
873 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "input", NULL
);
877 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "graphics", NULL
);
881 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "drm", NULL
);
885 r
= sd_device_monitor_attach_event(m
->device_monitor
, m
->event
);
889 r
= sd_device_monitor_start(m
->device_monitor
, manager_dispatch_device_udev
, m
);
893 (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m
->device_monitor
), "logind-device-monitor");
895 /* Don't watch keys if nobody cares */
896 if (!manager_all_buttons_ignored(m
)) {
897 r
= sd_device_monitor_new(&m
->device_button_monitor
);
901 r
= sd_device_monitor_filter_add_match_tag(m
->device_button_monitor
, "power-switch");
905 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_button_monitor
, "input", NULL
);
909 r
= sd_device_monitor_attach_event(m
->device_button_monitor
, m
->event
);
913 r
= sd_device_monitor_start(m
->device_button_monitor
, manager_dispatch_button_udev
, m
);
917 (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m
->device_button_monitor
), "logind-button-monitor");
920 /* Don't bother watching VCSA devices, if nobody cares */
921 if (m
->n_autovts
> 0 && m
->console_active_fd
>= 0) {
923 r
= sd_device_monitor_new(&m
->device_vcsa_monitor
);
927 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_vcsa_monitor
, "vc", NULL
);
931 r
= sd_device_monitor_attach_event(m
->device_vcsa_monitor
, m
->event
);
935 r
= sd_device_monitor_start(m
->device_vcsa_monitor
, manager_dispatch_vcsa_udev
, m
);
939 (void) sd_event_source_set_description(sd_device_monitor_get_event_source(m
->device_vcsa_monitor
), "logind-vcsa-monitor");
945 static void manager_gc(Manager
*m
, bool drop_not_started
) {
952 while ((seat
= m
->seat_gc_queue
)) {
953 LIST_REMOVE(gc_queue
, m
->seat_gc_queue
, seat
);
954 seat
->in_gc_queue
= false;
956 if (seat_may_gc(seat
, drop_not_started
)) {
957 seat_stop(seat
, false);
962 while ((session
= m
->session_gc_queue
)) {
963 LIST_REMOVE(gc_queue
, m
->session_gc_queue
, session
);
964 session
->in_gc_queue
= false;
966 /* First, if we are not closing yet, initiate stopping */
967 if (session_may_gc(session
, drop_not_started
) &&
968 session_get_state(session
) != SESSION_CLOSING
)
969 (void) session_stop(session
, false);
971 /* Normally, this should make the session referenced
972 * again, if it doesn't then let's get rid of it
974 if (session_may_gc(session
, drop_not_started
)) {
975 (void) session_finalize(session
);
976 session_free(session
);
980 while ((user
= m
->user_gc_queue
)) {
981 LIST_REMOVE(gc_queue
, m
->user_gc_queue
, user
);
982 user
->in_gc_queue
= false;
984 /* First step: queue stop jobs */
985 if (user_may_gc(user
, drop_not_started
))
986 (void) user_stop(user
, false);
988 /* Second step: finalize user */
989 if (user_may_gc(user
, drop_not_started
)) {
990 (void) user_finalize(user
);
996 static int manager_dispatch_idle_action(sd_event_source
*s
, uint64_t t
, void *userdata
) {
997 Manager
*m
= userdata
;
998 struct dual_timestamp since
;
1004 if (m
->idle_action
== HANDLE_IGNORE
||
1005 m
->idle_action_usec
<= 0)
1008 n
= now(CLOCK_MONOTONIC
);
1010 r
= manager_get_idle_hint(m
, &since
);
1012 /* Not idle. Let's check if after a timeout it might be idle then. */
1013 elapse
= n
+ m
->idle_action_usec
;
1015 /* Idle! Let's see if it's time to do something, or if
1016 * we shall sleep for longer. */
1018 if (n
>= since
.monotonic
+ m
->idle_action_usec
&&
1019 (m
->idle_action_not_before_usec
<= 0 || n
>= m
->idle_action_not_before_usec
+ m
->idle_action_usec
)) {
1020 log_info("System idle. Taking action.");
1022 manager_handle_action(m
, 0, m
->idle_action
, false, false);
1023 m
->idle_action_not_before_usec
= n
;
1026 elapse
= MAX(since
.monotonic
, m
->idle_action_not_before_usec
) + m
->idle_action_usec
;
1029 if (!m
->idle_action_event_source
) {
1031 r
= sd_event_add_time(
1033 &m
->idle_action_event_source
,
1035 elapse
, USEC_PER_SEC
*30,
1036 manager_dispatch_idle_action
, m
);
1038 return log_error_errno(r
, "Failed to add idle event source: %m");
1040 r
= sd_event_source_set_priority(m
->idle_action_event_source
, SD_EVENT_PRIORITY_IDLE
+10);
1042 return log_error_errno(r
, "Failed to set idle event source priority: %m");
1044 r
= sd_event_source_set_time(m
->idle_action_event_source
, elapse
);
1046 return log_error_errno(r
, "Failed to set idle event timer: %m");
1048 r
= sd_event_source_set_enabled(m
->idle_action_event_source
, SD_EVENT_ONESHOT
);
1050 return log_error_errno(r
, "Failed to enable idle event timer: %m");
1056 static int manager_dispatch_reload_signal(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1057 Manager
*m
= userdata
;
1060 manager_reset_config(m
);
1061 r
= manager_parse_config_file(m
);
1063 log_warning_errno(r
, "Failed to parse config file, using defaults: %m");
1065 log_info("Config file reloaded.");
1070 static int manager_startup(Manager
*m
) {
1076 Inhibitor
*inhibitor
;
1081 r
= sd_event_add_signal(m
->event
, NULL
, SIGHUP
, manager_dispatch_reload_signal
, m
);
1083 return log_error_errno(r
, "Failed to register SIGHUP handler: %m");
1085 /* Connect to utmp */
1086 manager_connect_utmp(m
);
1088 /* Connect to console */
1089 r
= manager_connect_console(m
);
1093 /* Connect to udev */
1094 r
= manager_connect_udev(m
);
1096 return log_error_errno(r
, "Failed to create udev watchers: %m");
1098 /* Connect to the bus */
1099 r
= manager_connect_bus(m
);
1103 /* Instantiate magic seat 0 */
1104 r
= manager_add_seat(m
, "seat0", &m
->seat0
);
1106 return log_error_errno(r
, "Failed to add seat0: %m");
1108 r
= manager_set_lid_switch_ignore(m
, 0 + m
->holdoff_timeout_usec
);
1110 log_warning_errno(r
, "Failed to set up lid switch ignore event source: %m");
1112 /* Deserialize state */
1113 r
= manager_enumerate_devices(m
);
1115 log_warning_errno(r
, "Device enumeration failed: %m");
1117 r
= manager_enumerate_seats(m
);
1119 log_warning_errno(r
, "Seat enumeration failed: %m");
1121 r
= manager_enumerate_users(m
);
1123 log_warning_errno(r
, "User enumeration failed: %m");
1125 r
= manager_enumerate_sessions(m
);
1127 log_warning_errno(r
, "Session enumeration failed: %m");
1129 r
= manager_enumerate_inhibitors(m
);
1131 log_warning_errno(r
, "Inhibitor enumeration failed: %m");
1133 r
= manager_enumerate_buttons(m
);
1135 log_warning_errno(r
, "Button enumeration failed: %m");
1137 /* Remove stale objects before we start them */
1138 manager_gc(m
, false);
1140 /* Reserve the special reserved VT */
1141 manager_reserve_vt(m
);
1143 /* Read in utmp if it exists */
1144 manager_read_utmp(m
);
1146 /* And start everything */
1147 HASHMAP_FOREACH(seat
, m
->seats
, i
)
1148 (void) seat_start(seat
);
1150 HASHMAP_FOREACH(user
, m
->users
, i
)
1151 (void) user_start(user
);
1153 HASHMAP_FOREACH(session
, m
->sessions
, i
)
1154 (void) session_start(session
, NULL
, NULL
);
1156 HASHMAP_FOREACH(inhibitor
, m
->inhibitors
, i
)
1157 inhibitor_start(inhibitor
);
1159 HASHMAP_FOREACH(button
, m
->buttons
, i
)
1160 button_check_switches(button
);
1162 manager_dispatch_idle_action(NULL
, 0, m
);
1167 static int manager_run(Manager
*m
) {
1173 r
= sd_event_get_state(m
->event
);
1176 if (r
== SD_EVENT_FINISHED
)
1179 manager_gc(m
, true);
1181 r
= manager_dispatch_delayed(m
, false);
1187 r
= sd_event_run(m
->event
, (uint64_t) -1);
1193 static int run(int argc
, char *argv
[]) {
1194 _cleanup_(manager_unrefp
) Manager
*m
= NULL
;
1197 log_set_facility(LOG_AUTH
);
1198 log_setup_service();
1203 log_error("This program takes no arguments.");
1207 r
= mac_selinux_init();
1209 return log_error_errno(r
, "Could not initialize labelling: %m");
1211 /* Always create the directories people can create inotify watches in. Note that some applications might check
1212 * for the existence of /run/systemd/seats/ to determine whether logind is available, so please always make
1213 * sure these directories are created early on and unconditionally. */
1214 (void) mkdir_label("/run/systemd/seats", 0755);
1215 (void) mkdir_label("/run/systemd/users", 0755);
1216 (void) mkdir_label("/run/systemd/sessions", 0755);
1218 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGHUP
, SIGTERM
, SIGINT
, -1) >= 0);
1220 r
= manager_new(&m
);
1222 return log_error_errno(r
, "Failed to allocate manager object: %m");
1224 (void) manager_parse_config_file(m
);
1226 r
= manager_startup(m
);
1228 return log_error_errno(r
, "Failed to fully start up daemon: %m");
1230 log_debug("systemd-logind running as pid "PID_FMT
, getpid_cached());
1231 (void) sd_notify(false,
1233 "STATUS=Processing requests...");
1237 log_debug("systemd-logind stopped as pid "PID_FMT
, getpid_cached());
1238 (void) sd_notify(false,
1240 "STATUS=Shutting down...");
1245 DEFINE_MAIN_FUNCTION(run
);