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% */
73 m
->user_tasks_max
= UINT64_C(4096);
75 m
->devices
= hashmap_new(&string_hash_ops
);
76 m
->seats
= hashmap_new(&string_hash_ops
);
77 m
->sessions
= hashmap_new(&string_hash_ops
);
78 m
->users
= hashmap_new(NULL
);
79 m
->inhibitors
= hashmap_new(&string_hash_ops
);
80 m
->buttons
= hashmap_new(&string_hash_ops
);
82 m
->user_units
= hashmap_new(&string_hash_ops
);
83 m
->session_units
= hashmap_new(&string_hash_ops
);
85 if (!m
->devices
|| !m
->seats
|| !m
->sessions
|| !m
->users
|| !m
->inhibitors
|| !m
->buttons
|| !m
->user_units
|| !m
->session_units
)
88 m
->kill_exclude_users
= strv_new("root", NULL
);
89 if (!m
->kill_exclude_users
)
96 r
= sd_event_default(&m
->event
);
100 sd_event_set_watchdog(m
->event
, true);
109 static void manager_free(Manager
*m
) {
119 while ((session
= hashmap_first(m
->sessions
)))
120 session_free(session
);
122 while ((u
= hashmap_first(m
->users
)))
125 while ((d
= hashmap_first(m
->devices
)))
128 while ((s
= hashmap_first(m
->seats
)))
131 while ((i
= hashmap_first(m
->inhibitors
)))
134 while ((b
= hashmap_first(m
->buttons
)))
137 hashmap_free(m
->devices
);
138 hashmap_free(m
->seats
);
139 hashmap_free(m
->sessions
);
140 hashmap_free(m
->users
);
141 hashmap_free(m
->inhibitors
);
142 hashmap_free(m
->buttons
);
144 hashmap_free(m
->user_units
);
145 hashmap_free(m
->session_units
);
147 sd_event_source_unref(m
->idle_action_event_source
);
148 sd_event_source_unref(m
->inhibit_timeout_source
);
149 sd_event_source_unref(m
->scheduled_shutdown_timeout_source
);
150 sd_event_source_unref(m
->nologin_timeout_source
);
151 sd_event_source_unref(m
->wall_message_timeout_source
);
153 sd_event_source_unref(m
->console_active_event_source
);
154 sd_event_source_unref(m
->udev_seat_event_source
);
155 sd_event_source_unref(m
->udev_device_event_source
);
156 sd_event_source_unref(m
->udev_vcsa_event_source
);
157 sd_event_source_unref(m
->udev_button_event_source
);
158 sd_event_source_unref(m
->lid_switch_ignore_event_source
);
160 safe_close(m
->console_active_fd
);
162 udev_monitor_unref(m
->udev_seat_monitor
);
163 udev_monitor_unref(m
->udev_device_monitor
);
164 udev_monitor_unref(m
->udev_vcsa_monitor
);
165 udev_monitor_unref(m
->udev_button_monitor
);
169 if (m
->unlink_nologin
)
170 (void) unlink("/run/nologin");
172 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
174 sd_bus_unref(m
->bus
);
175 sd_event_unref(m
->event
);
177 safe_close(m
->reserve_vt_fd
);
179 strv_free(m
->kill_only_users
);
180 strv_free(m
->kill_exclude_users
);
182 free(m
->scheduled_shutdown_type
);
183 free(m
->scheduled_shutdown_tty
);
184 free(m
->wall_message
);
189 static int manager_enumerate_devices(Manager
*m
) {
190 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
191 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
196 /* Loads devices from udev and creates seats for them as
199 e
= udev_enumerate_new(m
->udev
);
203 r
= udev_enumerate_add_match_tag(e
, "master-of-seat");
207 r
= udev_enumerate_add_match_is_initialized(e
);
211 r
= udev_enumerate_scan_devices(e
);
215 first
= udev_enumerate_get_list_entry(e
);
216 udev_list_entry_foreach(item
, first
) {
217 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
220 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
224 k
= manager_process_seat_device(m
, d
);
232 static int manager_enumerate_buttons(Manager
*m
) {
233 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
234 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
239 /* Loads buttons from udev */
241 if (m
->handle_power_key
== HANDLE_IGNORE
&&
242 m
->handle_suspend_key
== HANDLE_IGNORE
&&
243 m
->handle_hibernate_key
== HANDLE_IGNORE
&&
244 m
->handle_lid_switch
== HANDLE_IGNORE
&&
245 m
->handle_lid_switch_docked
== HANDLE_IGNORE
)
248 e
= udev_enumerate_new(m
->udev
);
252 r
= udev_enumerate_add_match_subsystem(e
, "input");
256 r
= udev_enumerate_add_match_tag(e
, "power-switch");
260 r
= udev_enumerate_add_match_is_initialized(e
);
264 r
= udev_enumerate_scan_devices(e
);
268 first
= udev_enumerate_get_list_entry(e
);
269 udev_list_entry_foreach(item
, first
) {
270 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
273 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
277 k
= manager_process_button_device(m
, d
);
285 static int manager_enumerate_seats(Manager
*m
) {
286 _cleanup_closedir_
DIR *d
= NULL
;
292 /* This loads data about seats stored on disk, but does not
293 * actually create any seats. Removes data of seats that no
296 d
= opendir("/run/systemd/seats");
301 return log_error_errno(errno
, "Failed to open /run/systemd/seats: %m");
304 FOREACH_DIRENT(de
, d
, return -errno
) {
308 if (!dirent_is_file(de
))
311 s
= hashmap_get(m
->seats
, de
->d_name
);
313 unlinkat(dirfd(d
), de
->d_name
, 0);
325 static int manager_enumerate_linger_users(Manager
*m
) {
326 _cleanup_closedir_
DIR *d
= NULL
;
332 d
= opendir("/var/lib/systemd/linger");
337 return log_error_errno(errno
, "Failed to open /var/lib/systemd/linger/: %m");
340 FOREACH_DIRENT(de
, d
, return -errno
) {
343 if (!dirent_is_file(de
))
346 k
= manager_add_user_by_name(m
, de
->d_name
, NULL
);
348 log_notice_errno(k
, "Couldn't add lingering user %s: %m", de
->d_name
);
356 static int manager_enumerate_users(Manager
*m
) {
357 _cleanup_closedir_
DIR *d
= NULL
;
363 /* Add lingering users */
364 r
= manager_enumerate_linger_users(m
);
366 /* Read in user data stored on disk */
367 d
= opendir("/run/systemd/users");
372 return log_error_errno(errno
, "Failed to open /run/systemd/users: %m");
375 FOREACH_DIRENT(de
, d
, return -errno
) {
378 if (!dirent_is_file(de
))
381 k
= manager_add_user_by_name(m
, de
->d_name
, &u
);
383 log_error_errno(k
, "Failed to add user by file name %s: %m", de
->d_name
);
389 user_add_to_gc_queue(u
);
399 static int manager_enumerate_sessions(Manager
*m
) {
400 _cleanup_closedir_
DIR *d
= NULL
;
406 /* Read in session data stored on disk */
407 d
= opendir("/run/systemd/sessions");
412 return log_error_errno(errno
, "Failed to open /run/systemd/sessions: %m");
415 FOREACH_DIRENT(de
, d
, return -errno
) {
419 if (!dirent_is_file(de
))
422 if (!session_id_valid(de
->d_name
)) {
423 log_warning("Invalid session file name '%s', ignoring.", de
->d_name
);
428 k
= manager_add_session(m
, de
->d_name
, &s
);
430 log_error_errno(k
, "Failed to add session by file name %s: %m", de
->d_name
);
436 session_add_to_gc_queue(s
);
446 static int manager_enumerate_inhibitors(Manager
*m
) {
447 _cleanup_closedir_
DIR *d
= NULL
;
453 d
= opendir("/run/systemd/inhibit");
458 return log_error_errno(errno
, "Failed to open /run/systemd/inhibit: %m");
461 FOREACH_DIRENT(de
, d
, return -errno
) {
465 if (!dirent_is_file(de
))
468 k
= manager_add_inhibitor(m
, de
->d_name
, &i
);
470 log_notice_errno(k
, "Couldn't add inhibitor %s: %m", de
->d_name
);
475 k
= inhibitor_load(i
);
483 static int manager_dispatch_seat_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
484 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
485 Manager
*m
= userdata
;
489 d
= udev_monitor_receive_device(m
->udev_seat_monitor
);
493 manager_process_seat_device(m
, d
);
497 static int manager_dispatch_device_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
498 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
499 Manager
*m
= userdata
;
503 d
= udev_monitor_receive_device(m
->udev_device_monitor
);
507 manager_process_seat_device(m
, d
);
511 static int manager_dispatch_vcsa_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
512 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
513 Manager
*m
= userdata
;
518 d
= udev_monitor_receive_device(m
->udev_vcsa_monitor
);
522 name
= udev_device_get_sysname(d
);
524 /* Whenever a VCSA device is removed try to reallocate our
525 * VTs, to make sure our auto VTs never go away. */
527 if (name
&& startswith(name
, "vcsa") && streq_ptr(udev_device_get_action(d
), "remove"))
528 seat_preallocate_vts(m
->seat0
);
533 static int manager_dispatch_button_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
534 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
535 Manager
*m
= userdata
;
539 d
= udev_monitor_receive_device(m
->udev_button_monitor
);
543 manager_process_button_device(m
, d
);
547 static int manager_dispatch_console(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
548 Manager
*m
= userdata
;
552 assert(m
->console_active_fd
== fd
);
554 seat_read_active_vt(m
->seat0
);
558 static int manager_reserve_vt(Manager
*m
) {
559 _cleanup_free_
char *p
= NULL
;
563 if (m
->reserve_vt
<= 0)
566 if (asprintf(&p
, "/dev/tty%u", m
->reserve_vt
) < 0)
569 m
->reserve_vt_fd
= open(p
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
|O_NONBLOCK
);
570 if (m
->reserve_vt_fd
< 0) {
572 /* Don't complain on VT-less systems */
574 log_warning_errno(errno
, "Failed to pin reserved VT: %m");
581 static int manager_connect_bus(Manager
*m
) {
582 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
588 r
= sd_bus_default_system(&m
->bus
);
590 return log_error_errno(r
, "Failed to connect to system bus: %m");
592 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable
, m
);
594 return log_error_errno(r
, "Failed to add manager object vtable: %m");
596 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable
, seat_object_find
, m
);
598 return log_error_errno(r
, "Failed to add seat object vtable: %m");
600 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/seat", seat_node_enumerator
, m
);
602 return log_error_errno(r
, "Failed to add seat enumerator: %m");
604 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable
, session_object_find
, m
);
606 return log_error_errno(r
, "Failed to add session object vtable: %m");
608 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/session", session_node_enumerator
, m
);
610 return log_error_errno(r
, "Failed to add session enumerator: %m");
612 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable
, user_object_find
, m
);
614 return log_error_errno(r
, "Failed to add user object vtable: %m");
616 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/user", user_node_enumerator
, m
);
618 return log_error_errno(r
, "Failed to add user enumerator: %m");
620 r
= sd_bus_add_match(m
->bus
,
623 "sender='org.freedesktop.systemd1',"
624 "interface='org.freedesktop.systemd1.Manager',"
625 "member='JobRemoved',"
626 "path='/org/freedesktop/systemd1'",
627 match_job_removed
, m
);
629 return log_error_errno(r
, "Failed to add match for JobRemoved: %m");
631 r
= sd_bus_add_match(m
->bus
,
634 "sender='org.freedesktop.systemd1',"
635 "interface='org.freedesktop.systemd1.Manager',"
636 "member='UnitRemoved',"
637 "path='/org/freedesktop/systemd1'",
638 match_unit_removed
, m
);
640 return log_error_errno(r
, "Failed to add match for UnitRemoved: %m");
642 r
= sd_bus_add_match(m
->bus
,
645 "sender='org.freedesktop.systemd1',"
646 "interface='org.freedesktop.DBus.Properties',"
647 "member='PropertiesChanged'",
648 match_properties_changed
, m
);
650 return log_error_errno(r
, "Failed to add match for PropertiesChanged: %m");
652 r
= sd_bus_add_match(m
->bus
,
655 "sender='org.freedesktop.systemd1',"
656 "interface='org.freedesktop.systemd1.Manager',"
657 "member='Reloading',"
658 "path='/org/freedesktop/systemd1'",
661 return log_error_errno(r
, "Failed to add match for Reloading: %m");
663 r
= sd_bus_call_method(
665 "org.freedesktop.systemd1",
666 "/org/freedesktop/systemd1",
667 "org.freedesktop.systemd1.Manager",
672 log_error("Failed to enable subscription: %s", bus_error_message(&error
, r
));
676 r
= sd_bus_request_name(m
->bus
, "org.freedesktop.login1", 0);
678 return log_error_errno(r
, "Failed to register name: %m");
680 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
682 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
687 static int manager_vt_switch(sd_event_source
*src
, const struct signalfd_siginfo
*si
, void *data
) {
689 Session
*active
, *iter
;
692 * We got a VT-switch signal and we have to acknowledge it immediately.
693 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
694 * old user-space might run multiple sessions on a single VT, *sigh*.
695 * Therefore, we have to iterate all sessions and find one with a vtfd
696 * on the requested VT.
697 * As only VTs with active controllers have VT_PROCESS set, our current
698 * notion of the active VT might be wrong (for instance if the switch
699 * happens while we setup VT_PROCESS). Therefore, read the current VT
700 * first and then use s->active->vtnr as reference. Note that this is
701 * not racy, as no further VT-switch can happen as long as we're in
702 * synchronous VT_PROCESS mode.
706 seat_read_active_vt(m
->seat0
);
708 active
= m
->seat0
->active
;
709 if (!active
|| active
->vtnr
< 1) {
710 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
714 if (active
->vtfd
>= 0) {
715 session_leave_vt(active
);
717 LIST_FOREACH(sessions_by_seat
, iter
, m
->seat0
->sessions
) {
718 if (iter
->vtnr
== active
->vtnr
&& iter
->vtfd
>= 0) {
719 session_leave_vt(iter
);
728 static int manager_connect_console(Manager
*m
) {
732 assert(m
->console_active_fd
< 0);
734 /* On certain architectures (S390 and Xen, and containers),
735 /dev/tty0 does not exist, so don't fail if we can't open
737 if (access("/dev/tty0", F_OK
) < 0)
740 m
->console_active_fd
= open("/sys/class/tty/tty0/active", O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
741 if (m
->console_active_fd
< 0) {
743 /* On some systems the device node /dev/tty0 may exist
744 * even though /sys/class/tty/tty0 does not. */
748 return 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(PKGSYSCONFDIR
"/logind.conf",
1107 CONF_PATHS_NULSTR("systemd/logind.conf.d"),
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
;