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"
34 #include "dirent-util.h"
36 #include "formats-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% */
73 m
->devices
= hashmap_new(&string_hash_ops
);
74 m
->seats
= hashmap_new(&string_hash_ops
);
75 m
->sessions
= hashmap_new(&string_hash_ops
);
76 m
->users
= hashmap_new(NULL
);
77 m
->inhibitors
= hashmap_new(&string_hash_ops
);
78 m
->buttons
= hashmap_new(&string_hash_ops
);
80 m
->user_units
= hashmap_new(&string_hash_ops
);
81 m
->session_units
= hashmap_new(&string_hash_ops
);
83 if (!m
->devices
|| !m
->seats
|| !m
->sessions
|| !m
->users
|| !m
->inhibitors
|| !m
->buttons
|| !m
->user_units
|| !m
->session_units
)
86 m
->kill_exclude_users
= strv_new("root", NULL
);
87 if (!m
->kill_exclude_users
)
94 r
= sd_event_default(&m
->event
);
98 sd_event_set_watchdog(m
->event
, true);
107 static void manager_free(Manager
*m
) {
117 while ((session
= hashmap_first(m
->sessions
)))
118 session_free(session
);
120 while ((u
= hashmap_first(m
->users
)))
123 while ((d
= hashmap_first(m
->devices
)))
126 while ((s
= hashmap_first(m
->seats
)))
129 while ((i
= hashmap_first(m
->inhibitors
)))
132 while ((b
= hashmap_first(m
->buttons
)))
135 hashmap_free(m
->devices
);
136 hashmap_free(m
->seats
);
137 hashmap_free(m
->sessions
);
138 hashmap_free(m
->users
);
139 hashmap_free(m
->inhibitors
);
140 hashmap_free(m
->buttons
);
142 hashmap_free(m
->user_units
);
143 hashmap_free(m
->session_units
);
145 sd_event_source_unref(m
->idle_action_event_source
);
146 sd_event_source_unref(m
->inhibit_timeout_source
);
147 sd_event_source_unref(m
->scheduled_shutdown_timeout_source
);
148 sd_event_source_unref(m
->nologin_timeout_source
);
149 sd_event_source_unref(m
->wall_message_timeout_source
);
151 sd_event_source_unref(m
->console_active_event_source
);
152 sd_event_source_unref(m
->udev_seat_event_source
);
153 sd_event_source_unref(m
->udev_device_event_source
);
154 sd_event_source_unref(m
->udev_vcsa_event_source
);
155 sd_event_source_unref(m
->udev_button_event_source
);
156 sd_event_source_unref(m
->lid_switch_ignore_event_source
);
158 safe_close(m
->console_active_fd
);
160 udev_monitor_unref(m
->udev_seat_monitor
);
161 udev_monitor_unref(m
->udev_device_monitor
);
162 udev_monitor_unref(m
->udev_vcsa_monitor
);
163 udev_monitor_unref(m
->udev_button_monitor
);
167 if (m
->unlink_nologin
)
168 (void) unlink("/run/nologin");
170 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
172 sd_bus_unref(m
->bus
);
173 sd_event_unref(m
->event
);
175 safe_close(m
->reserve_vt_fd
);
177 strv_free(m
->kill_only_users
);
178 strv_free(m
->kill_exclude_users
);
180 free(m
->scheduled_shutdown_type
);
181 free(m
->scheduled_shutdown_tty
);
182 free(m
->wall_message
);
187 static int manager_enumerate_devices(Manager
*m
) {
188 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
189 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
194 /* Loads devices from udev and creates seats for them as
197 e
= udev_enumerate_new(m
->udev
);
201 r
= udev_enumerate_add_match_tag(e
, "master-of-seat");
205 r
= udev_enumerate_add_match_is_initialized(e
);
209 r
= udev_enumerate_scan_devices(e
);
213 first
= udev_enumerate_get_list_entry(e
);
214 udev_list_entry_foreach(item
, first
) {
215 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
218 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
222 k
= manager_process_seat_device(m
, d
);
230 static int manager_enumerate_buttons(Manager
*m
) {
231 _cleanup_udev_enumerate_unref_
struct udev_enumerate
*e
= NULL
;
232 struct udev_list_entry
*item
= NULL
, *first
= NULL
;
237 /* Loads buttons from udev */
239 if (m
->handle_power_key
== HANDLE_IGNORE
&&
240 m
->handle_suspend_key
== HANDLE_IGNORE
&&
241 m
->handle_hibernate_key
== HANDLE_IGNORE
&&
242 m
->handle_lid_switch
== HANDLE_IGNORE
&&
243 m
->handle_lid_switch_docked
== HANDLE_IGNORE
)
246 e
= udev_enumerate_new(m
->udev
);
250 r
= udev_enumerate_add_match_subsystem(e
, "input");
254 r
= udev_enumerate_add_match_tag(e
, "power-switch");
258 r
= udev_enumerate_add_match_is_initialized(e
);
262 r
= udev_enumerate_scan_devices(e
);
266 first
= udev_enumerate_get_list_entry(e
);
267 udev_list_entry_foreach(item
, first
) {
268 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
271 d
= udev_device_new_from_syspath(m
->udev
, udev_list_entry_get_name(item
));
275 k
= manager_process_button_device(m
, d
);
283 static int manager_enumerate_seats(Manager
*m
) {
284 _cleanup_closedir_
DIR *d
= NULL
;
290 /* This loads data about seats stored on disk, but does not
291 * actually create any seats. Removes data of seats that no
294 d
= opendir("/run/systemd/seats");
299 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 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 log_error_errno(errno
, "Failed to open /run/systemd/users: %m");
376 FOREACH_DIRENT(de
, d
, return -errno
) {
379 if (!dirent_is_file(de
))
382 k
= manager_add_user_by_name(m
, de
->d_name
, &u
);
384 log_error_errno(k
, "Failed to add user by file name %s: %m", de
->d_name
);
390 user_add_to_gc_queue(u
);
400 static int manager_enumerate_sessions(Manager
*m
) {
401 _cleanup_closedir_
DIR *d
= NULL
;
407 /* Read in session data stored on disk */
408 d
= opendir("/run/systemd/sessions");
413 log_error_errno(errno
, "Failed to open /run/systemd/sessions: %m");
417 FOREACH_DIRENT(de
, d
, return -errno
) {
421 if (!dirent_is_file(de
))
424 if (!session_id_valid(de
->d_name
)) {
425 log_warning("Invalid session file name '%s', ignoring.", de
->d_name
);
430 k
= manager_add_session(m
, de
->d_name
, &s
);
432 log_error_errno(k
, "Failed to add session by file name %s: %m", de
->d_name
);
438 session_add_to_gc_queue(s
);
448 static int manager_enumerate_inhibitors(Manager
*m
) {
449 _cleanup_closedir_
DIR *d
= NULL
;
455 d
= opendir("/run/systemd/inhibit");
460 log_error_errno(errno
, "Failed to open /run/systemd/inhibit: %m");
464 FOREACH_DIRENT(de
, d
, return -errno
) {
468 if (!dirent_is_file(de
))
471 k
= manager_add_inhibitor(m
, de
->d_name
, &i
);
473 log_notice_errno(k
, "Couldn't add inhibitor %s: %m", de
->d_name
);
478 k
= inhibitor_load(i
);
486 static int manager_dispatch_seat_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
487 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
488 Manager
*m
= userdata
;
492 d
= udev_monitor_receive_device(m
->udev_seat_monitor
);
496 manager_process_seat_device(m
, d
);
500 static int manager_dispatch_device_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
501 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
502 Manager
*m
= userdata
;
506 d
= udev_monitor_receive_device(m
->udev_device_monitor
);
510 manager_process_seat_device(m
, d
);
514 static int manager_dispatch_vcsa_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
515 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
516 Manager
*m
= userdata
;
521 d
= udev_monitor_receive_device(m
->udev_vcsa_monitor
);
525 name
= udev_device_get_sysname(d
);
527 /* Whenever a VCSA device is removed try to reallocate our
528 * VTs, to make sure our auto VTs never go away. */
530 if (name
&& startswith(name
, "vcsa") && streq_ptr(udev_device_get_action(d
), "remove"))
531 seat_preallocate_vts(m
->seat0
);
536 static int manager_dispatch_button_udev(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
537 _cleanup_udev_device_unref_
struct udev_device
*d
= NULL
;
538 Manager
*m
= userdata
;
542 d
= udev_monitor_receive_device(m
->udev_button_monitor
);
546 manager_process_button_device(m
, d
);
550 static int manager_dispatch_console(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
551 Manager
*m
= userdata
;
555 assert(m
->console_active_fd
== fd
);
557 seat_read_active_vt(m
->seat0
);
561 static int manager_reserve_vt(Manager
*m
) {
562 _cleanup_free_
char *p
= NULL
;
566 if (m
->reserve_vt
<= 0)
569 if (asprintf(&p
, "/dev/tty%u", m
->reserve_vt
) < 0)
572 m
->reserve_vt_fd
= open(p
, O_RDWR
|O_NOCTTY
|O_CLOEXEC
|O_NONBLOCK
);
573 if (m
->reserve_vt_fd
< 0) {
575 /* Don't complain on VT-less systems */
577 log_warning_errno(errno
, "Failed to pin reserved VT: %m");
584 static int manager_connect_bus(Manager
*m
) {
585 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
591 r
= sd_bus_default_system(&m
->bus
);
593 return log_error_errno(r
, "Failed to connect to system bus: %m");
595 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable
, m
);
597 return log_error_errno(r
, "Failed to add manager object vtable: %m");
599 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable
, seat_object_find
, m
);
601 return log_error_errno(r
, "Failed to add seat object vtable: %m");
603 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/seat", seat_node_enumerator
, m
);
605 return log_error_errno(r
, "Failed to add seat enumerator: %m");
607 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable
, session_object_find
, m
);
609 return log_error_errno(r
, "Failed to add session object vtable: %m");
611 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/session", session_node_enumerator
, m
);
613 return log_error_errno(r
, "Failed to add session enumerator: %m");
615 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable
, user_object_find
, m
);
617 return log_error_errno(r
, "Failed to add user object vtable: %m");
619 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/login1/user", user_node_enumerator
, m
);
621 return log_error_errno(r
, "Failed to add user enumerator: %m");
623 r
= sd_bus_add_match(m
->bus
,
626 "sender='org.freedesktop.systemd1',"
627 "interface='org.freedesktop.systemd1.Manager',"
628 "member='JobRemoved',"
629 "path='/org/freedesktop/systemd1'",
630 match_job_removed
, m
);
632 return log_error_errno(r
, "Failed to add match for JobRemoved: %m");
634 r
= sd_bus_add_match(m
->bus
,
637 "sender='org.freedesktop.systemd1',"
638 "interface='org.freedesktop.systemd1.Manager',"
639 "member='UnitRemoved',"
640 "path='/org/freedesktop/systemd1'",
641 match_unit_removed
, m
);
643 return log_error_errno(r
, "Failed to add match for UnitRemoved: %m");
645 r
= sd_bus_add_match(m
->bus
,
648 "sender='org.freedesktop.systemd1',"
649 "interface='org.freedesktop.DBus.Properties',"
650 "member='PropertiesChanged'",
651 match_properties_changed
, m
);
653 return log_error_errno(r
, "Failed to add match for PropertiesChanged: %m");
655 r
= sd_bus_add_match(m
->bus
,
658 "sender='org.freedesktop.systemd1',"
659 "interface='org.freedesktop.systemd1.Manager',"
660 "member='Reloading',"
661 "path='/org/freedesktop/systemd1'",
664 return log_error_errno(r
, "Failed to add match for Reloading: %m");
666 r
= sd_bus_call_method(
668 "org.freedesktop.systemd1",
669 "/org/freedesktop/systemd1",
670 "org.freedesktop.systemd1.Manager",
675 log_error("Failed to enable subscription: %s", bus_error_message(&error
, r
));
679 r
= sd_bus_request_name(m
->bus
, "org.freedesktop.login1", 0);
681 return log_error_errno(r
, "Failed to register name: %m");
683 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
685 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
690 static int manager_vt_switch(sd_event_source
*src
, const struct signalfd_siginfo
*si
, void *data
) {
692 Session
*active
, *iter
;
695 * We got a VT-switch signal and we have to acknowledge it immediately.
696 * Preferably, we'd just use m->seat0->active->vtfd, but unfortunately,
697 * old user-space might run multiple sessions on a single VT, *sigh*.
698 * Therefore, we have to iterate all sessions and find one with a vtfd
699 * on the requested VT.
700 * As only VTs with active controllers have VT_PROCESS set, our current
701 * notion of the active VT might be wrong (for instance if the switch
702 * happens while we setup VT_PROCESS). Therefore, read the current VT
703 * first and then use s->active->vtnr as reference. Note that this is
704 * not racy, as no further VT-switch can happen as long as we're in
705 * synchronous VT_PROCESS mode.
709 seat_read_active_vt(m
->seat0
);
711 active
= m
->seat0
->active
;
712 if (!active
|| active
->vtnr
< 1) {
713 log_warning("Received VT_PROCESS signal without a registered session on that VT.");
717 if (active
->vtfd
>= 0) {
718 session_leave_vt(active
);
720 LIST_FOREACH(sessions_by_seat
, iter
, m
->seat0
->sessions
) {
721 if (iter
->vtnr
== active
->vtnr
&& iter
->vtfd
>= 0) {
722 session_leave_vt(iter
);
731 static int manager_connect_console(Manager
*m
) {
735 assert(m
->console_active_fd
< 0);
737 /* On certain architectures (S390 and Xen, and containers),
738 /dev/tty0 does not exist, so don't fail if we can't open
740 if (access("/dev/tty0", F_OK
) < 0)
743 m
->console_active_fd
= open("/sys/class/tty/tty0/active", O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
744 if (m
->console_active_fd
< 0) {
746 /* On some systems the device node /dev/tty0 may exist
747 * even though /sys/class/tty/tty0 does not. */
751 log_error_errno(errno
, "Failed to open /sys/class/tty/tty0/active: %m");
755 r
= sd_event_add_io(m
->event
, &m
->console_active_event_source
, m
->console_active_fd
, 0, manager_dispatch_console
, m
);
757 log_error("Failed to watch foreground console");
762 * SIGRTMIN is used as global VT-release signal, SIGRTMIN + 1 is used
763 * as VT-acquire signal. We ignore any acquire-events (yes, we still
764 * have to provide a valid signal-number for it!) and acknowledge all
765 * release events immediately.
768 if (SIGRTMIN
+ 1 > SIGRTMAX
) {
769 log_error("Not enough real-time signals available: %u-%u", SIGRTMIN
, SIGRTMAX
);
773 assert_se(ignore_signals(SIGRTMIN
+ 1, -1) >= 0);
774 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGRTMIN
, -1) >= 0);
776 r
= sd_event_add_signal(m
->event
, NULL
, SIGRTMIN
, manager_vt_switch
, m
);
783 static int manager_connect_udev(Manager
*m
) {
787 assert(!m
->udev_seat_monitor
);
788 assert(!m
->udev_device_monitor
);
789 assert(!m
->udev_vcsa_monitor
);
790 assert(!m
->udev_button_monitor
);
792 m
->udev_seat_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
793 if (!m
->udev_seat_monitor
)
796 r
= udev_monitor_filter_add_match_tag(m
->udev_seat_monitor
, "master-of-seat");
800 r
= udev_monitor_enable_receiving(m
->udev_seat_monitor
);
804 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
);
808 m
->udev_device_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
809 if (!m
->udev_device_monitor
)
812 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "input", NULL
);
816 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "graphics", NULL
);
820 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_device_monitor
, "drm", NULL
);
824 r
= udev_monitor_enable_receiving(m
->udev_device_monitor
);
828 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
);
832 /* Don't watch keys if nobody cares */
833 if (m
->handle_power_key
!= HANDLE_IGNORE
||
834 m
->handle_suspend_key
!= HANDLE_IGNORE
||
835 m
->handle_hibernate_key
!= HANDLE_IGNORE
||
836 m
->handle_lid_switch
!= HANDLE_IGNORE
||
837 m
->handle_lid_switch_docked
!= HANDLE_IGNORE
) {
839 m
->udev_button_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
840 if (!m
->udev_button_monitor
)
843 r
= udev_monitor_filter_add_match_tag(m
->udev_button_monitor
, "power-switch");
847 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_button_monitor
, "input", NULL
);
851 r
= udev_monitor_enable_receiving(m
->udev_button_monitor
);
855 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
);
860 /* Don't bother watching VCSA devices, if nobody cares */
861 if (m
->n_autovts
> 0 && m
->console_active_fd
>= 0) {
863 m
->udev_vcsa_monitor
= udev_monitor_new_from_netlink(m
->udev
, "udev");
864 if (!m
->udev_vcsa_monitor
)
867 r
= udev_monitor_filter_add_match_subsystem_devtype(m
->udev_vcsa_monitor
, "vc", NULL
);
871 r
= udev_monitor_enable_receiving(m
->udev_vcsa_monitor
);
875 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
);
883 static void manager_gc(Manager
*m
, bool drop_not_started
) {
890 while ((seat
= m
->seat_gc_queue
)) {
891 LIST_REMOVE(gc_queue
, m
->seat_gc_queue
, seat
);
892 seat
->in_gc_queue
= false;
894 if (!seat_check_gc(seat
, drop_not_started
)) {
895 seat_stop(seat
, false);
900 while ((session
= m
->session_gc_queue
)) {
901 LIST_REMOVE(gc_queue
, m
->session_gc_queue
, session
);
902 session
->in_gc_queue
= false;
904 /* First, if we are not closing yet, initiate stopping */
905 if (!session_check_gc(session
, drop_not_started
) &&
906 session_get_state(session
) != SESSION_CLOSING
)
907 session_stop(session
, false);
909 /* Normally, this should make the session referenced
910 * again, if it doesn't then let's get rid of it
912 if (!session_check_gc(session
, drop_not_started
)) {
913 session_finalize(session
);
914 session_free(session
);
918 while ((user
= m
->user_gc_queue
)) {
919 LIST_REMOVE(gc_queue
, m
->user_gc_queue
, user
);
920 user
->in_gc_queue
= false;
922 /* First step: queue stop jobs */
923 if (!user_check_gc(user
, drop_not_started
))
924 user_stop(user
, false);
926 /* Second step: finalize user */
927 if (!user_check_gc(user
, drop_not_started
)) {
934 static int manager_dispatch_idle_action(sd_event_source
*s
, uint64_t t
, void *userdata
) {
935 Manager
*m
= userdata
;
936 struct dual_timestamp since
;
942 if (m
->idle_action
== HANDLE_IGNORE
||
943 m
->idle_action_usec
<= 0)
946 n
= now(CLOCK_MONOTONIC
);
948 r
= manager_get_idle_hint(m
, &since
);
950 /* Not idle. Let's check if after a timeout it might be idle then. */
951 elapse
= n
+ m
->idle_action_usec
;
953 /* Idle! Let's see if it's time to do something, or if
954 * we shall sleep for longer. */
956 if (n
>= since
.monotonic
+ m
->idle_action_usec
&&
957 (m
->idle_action_not_before_usec
<= 0 || n
>= m
->idle_action_not_before_usec
+ m
->idle_action_usec
)) {
958 log_info("System idle. Taking action.");
960 manager_handle_action(m
, 0, m
->idle_action
, false, false);
961 m
->idle_action_not_before_usec
= n
;
964 elapse
= MAX(since
.monotonic
, m
->idle_action_not_before_usec
) + m
->idle_action_usec
;
967 if (!m
->idle_action_event_source
) {
969 r
= sd_event_add_time(
971 &m
->idle_action_event_source
,
973 elapse
, USEC_PER_SEC
*30,
974 manager_dispatch_idle_action
, m
);
976 return log_error_errno(r
, "Failed to add idle event source: %m");
978 r
= sd_event_source_set_priority(m
->idle_action_event_source
, SD_EVENT_PRIORITY_IDLE
+10);
980 return log_error_errno(r
, "Failed to set idle event source priority: %m");
982 r
= sd_event_source_set_time(m
->idle_action_event_source
, elapse
);
984 return log_error_errno(r
, "Failed to set idle event timer: %m");
986 r
= sd_event_source_set_enabled(m
->idle_action_event_source
, SD_EVENT_ONESHOT
);
988 return log_error_errno(r
, "Failed to enable idle event timer: %m");
994 static int manager_startup(Manager
*m
) {
1000 Inhibitor
*inhibitor
;
1005 /* Connect to console */
1006 r
= manager_connect_console(m
);
1010 /* Connect to udev */
1011 r
= manager_connect_udev(m
);
1013 return log_error_errno(r
, "Failed to create udev watchers: %m");
1015 /* Connect to the bus */
1016 r
= manager_connect_bus(m
);
1020 /* Instantiate magic seat 0 */
1021 r
= manager_add_seat(m
, "seat0", &m
->seat0
);
1023 return log_error_errno(r
, "Failed to add seat0: %m");
1025 r
= manager_set_lid_switch_ignore(m
, 0 + m
->holdoff_timeout_usec
);
1027 log_warning_errno(r
, "Failed to set up lid switch ignore event source: %m");
1029 /* Deserialize state */
1030 r
= manager_enumerate_devices(m
);
1032 log_warning_errno(r
, "Device enumeration failed: %m");
1034 r
= manager_enumerate_seats(m
);
1036 log_warning_errno(r
, "Seat enumeration failed: %m");
1038 r
= manager_enumerate_users(m
);
1040 log_warning_errno(r
, "User enumeration failed: %m");
1042 r
= manager_enumerate_sessions(m
);
1044 log_warning_errno(r
, "Session enumeration failed: %m");
1046 r
= manager_enumerate_inhibitors(m
);
1048 log_warning_errno(r
, "Inhibitor enumeration failed: %m");
1050 r
= manager_enumerate_buttons(m
);
1052 log_warning_errno(r
, "Button enumeration failed: %m");
1054 /* Remove stale objects before we start them */
1055 manager_gc(m
, false);
1057 /* Reserve the special reserved VT */
1058 manager_reserve_vt(m
);
1060 /* And start everything */
1061 HASHMAP_FOREACH(seat
, m
->seats
, i
)
1064 HASHMAP_FOREACH(user
, m
->users
, i
)
1067 HASHMAP_FOREACH(session
, m
->sessions
, i
)
1068 session_start(session
);
1070 HASHMAP_FOREACH(inhibitor
, m
->inhibitors
, i
)
1071 inhibitor_start(inhibitor
);
1073 HASHMAP_FOREACH(button
, m
->buttons
, i
)
1074 button_check_switches(button
);
1076 manager_dispatch_idle_action(NULL
, 0, m
);
1081 static int manager_run(Manager
*m
) {
1087 r
= sd_event_get_state(m
->event
);
1090 if (r
== SD_EVENT_FINISHED
)
1093 manager_gc(m
, true);
1095 r
= manager_dispatch_delayed(m
, false);
1101 r
= sd_event_run(m
->event
, (uint64_t) -1);
1107 static int manager_parse_config_file(Manager
*m
) {
1110 return config_parse_many("/etc/systemd/logind.conf",
1111 CONF_DIRS_NULSTR("systemd/logind.conf"),
1113 config_item_perf_lookup
, logind_gperf_lookup
,
1117 int main(int argc
, char *argv
[]) {
1121 log_set_target(LOG_TARGET_AUTO
);
1122 log_set_facility(LOG_AUTH
);
1123 log_parse_environment();
1129 log_error("This program takes no arguments.");
1134 /* Always create the directories people can create inotify
1135 * watches in. Note that some applications might check for the
1136 * existence of /run/systemd/seats/ to determine whether
1137 * logind is available, so please always make sure this check
1139 mkdir_label("/run/systemd/seats", 0755);
1140 mkdir_label("/run/systemd/users", 0755);
1141 mkdir_label("/run/systemd/sessions", 0755);
1149 manager_parse_config_file(m
);
1151 r
= manager_startup(m
);
1153 log_error_errno(r
, "Failed to fully start up daemon: %m");
1157 log_debug("systemd-logind running as pid "PID_FMT
, getpid());
1161 "STATUS=Processing requests...");
1165 log_debug("systemd-logind stopped as pid "PID_FMT
, getpid());
1170 "STATUS=Shutting down...");
1174 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;