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 <sys/ioctl.h>
29 #include "sd-messages.h"
31 #include "alloc-util.h"
32 #include "audit-util.h"
33 #include "bus-error.h"
38 #include "formats-util.h"
40 #include "logind-session.h"
42 #include "parse-util.h"
43 #include "path-util.h"
44 #include "string-table.h"
45 #include "terminal-util.h"
46 #include "user-util.h"
49 #define RELEASE_USEC (20*USEC_PER_SEC)
51 static void session_remove_fifo(Session *s);
53 Session* session_new(Manager *m, const char *id) {
58 assert(session_id_valid(id));
64 s->state_file = strappend("/run/systemd/sessions/", id);
70 s->devices = hashmap_new(&devt_hash_ops);
77 s->id = basename(s->state_file);
79 if (hashmap_put(m->sessions, s->id, s) < 0) {
80 hashmap_free(s->devices);
93 void session_free(Session *s) {
99 LIST_REMOVE(gc_queue, s->manager->session_gc_queue, s);
101 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
103 session_remove_fifo(s);
105 session_drop_controller(s);
107 while ((sd = hashmap_first(s->devices)))
108 session_device_free(sd);
110 hashmap_free(s->devices);
113 LIST_REMOVE(sessions_by_user, s->user->sessions, s);
115 if (s->user->display == s)
116 s->user->display = NULL;
120 if (s->seat->active == s)
121 s->seat->active = NULL;
122 if (s->seat->pending_switch == s)
123 s->seat->pending_switch = NULL;
125 seat_evict_position(s->seat, s);
126 LIST_REMOVE(sessions_by_seat, s->seat->sessions, s);
130 hashmap_remove(s->manager->session_units, s->scope);
134 #if 0 /// elogind does not support systemd scope_jobs
138 sd_bus_message_unref(s->create_message);
142 free(s->remote_host);
143 free(s->remote_user);
147 hashmap_remove(s->manager->sessions, s->id);
153 void session_set_user(Session *s, User *u) {
158 LIST_PREPEND(sessions_by_user, u->sessions, s);
161 int session_save(Session *s) {
162 _cleanup_free_ char *temp_path = NULL;
163 _cleanup_fclose_ FILE *f = NULL;
174 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
178 r = fopen_temporary(s->state_file, &f, &temp_path);
184 fchmod(fileno(f), 0644);
187 "# This is private data. Do not parse.\n"
195 session_is_active(s),
196 session_state_to_string(session_get_state(s)),
200 fprintf(f, "TYPE=%s\n", session_type_to_string(s->type));
203 fprintf(f, "CLASS=%s\n", session_class_to_string(s->class));
206 fprintf(f, "SCOPE=%s\n", s->scope);
207 #if 0 /// elogind does not support systemd scope_jobs
209 fprintf(f, "SCOPE_JOB=%s\n", s->scope_job);
213 fprintf(f, "FIFO=%s\n", s->fifo_path);
216 fprintf(f, "SEAT=%s\n", s->seat->id);
219 fprintf(f, "TTY=%s\n", s->tty);
222 fprintf(f, "DISPLAY=%s\n", s->display);
224 if (s->remote_host) {
225 _cleanup_free_ char *escaped;
227 escaped = cescape(s->remote_host);
233 fprintf(f, "REMOTE_HOST=%s\n", escaped);
236 if (s->remote_user) {
237 _cleanup_free_ char *escaped;
239 escaped = cescape(s->remote_user);
245 fprintf(f, "REMOTE_USER=%s\n", escaped);
249 _cleanup_free_ char *escaped;
251 escaped = cescape(s->service);
257 fprintf(f, "SERVICE=%s\n", escaped);
261 _cleanup_free_ char *escaped;
264 escaped = cescape(s->desktop);
270 fprintf(f, "DESKTOP=%s\n", escaped);
273 if (s->seat && seat_has_vts(s->seat))
274 fprintf(f, "VTNR=%u\n", s->vtnr);
277 fprintf(f, "POSITION=%u\n", s->position);
280 fprintf(f, "LEADER="PID_FMT"\n", s->leader);
283 fprintf(f, "AUDIT=%"PRIu32"\n", s->audit_id);
285 if (dual_timestamp_is_set(&s->timestamp))
287 "REALTIME="USEC_FMT"\n"
288 "MONOTONIC="USEC_FMT"\n",
289 s->timestamp.realtime,
290 s->timestamp.monotonic);
293 fprintf(f, "CONTROLLER=%s\n", s->controller);
295 r = fflush_and_check(f);
299 if (rename(temp_path, s->state_file) < 0) {
307 (void) unlink(s->state_file);
310 (void) unlink(temp_path);
312 return log_error_errno(r, "Failed to save session data %s: %m", s->state_file);
316 int session_load(Session *s) {
317 _cleanup_free_ char *remote = NULL,
334 r = parse_env_file(s->state_file, NEWLINE,
337 #if 0 /// elogind does not support systemd scope_jobs
338 "SCOPE_JOB", &s->scope_job,
340 "FIFO", &s->fifo_path,
343 "DISPLAY", &s->display,
344 "REMOTE_HOST", &s->remote_host,
345 "REMOTE_USER", &s->remote_user,
346 "SERVICE", &s->service,
347 "DESKTOP", &s->desktop,
350 "POSITION", &position,
355 "REALTIME", &realtime,
356 "MONOTONIC", &monotonic,
357 "CONTROLLER", &controller,
361 return log_error_errno(r, "Failed to read %s: %m", s->state_file);
368 log_error("UID not specified for session %s", s->id);
372 r = parse_uid(uid, &u);
374 log_error("Failed to parse UID value %s for session %s.", uid, s->id);
378 user = hashmap_get(s->manager->users, UID_TO_PTR(u));
380 log_error("User of session %s not known.", s->id);
384 session_set_user(s, user);
388 k = parse_boolean(remote);
394 safe_atou(vtnr, &s->vtnr);
396 if (seat && !s->seat) {
399 o = hashmap_get(s->manager->seats, seat);
401 r = seat_attach_session(o, s);
403 log_error("Cannot attach session %s to seat %s", s->id, seat);
406 if (!s->seat || !seat_has_vts(s->seat))
409 if (position && s->seat) {
412 safe_atou(position, &npos);
413 seat_claim_position(s->seat, s, npos);
417 k = parse_pid(leader, &s->leader);
419 audit_session_from_pid(s->leader, &s->audit_id);
425 t = session_type_from_string(type);
433 c = session_class_from_string(class);
438 if (state && streq(state, "closing"))
444 /* If we open an unopened pipe for reading we will not
445 get an EOF. to trigger an EOF we hence open it for
446 writing, but close it right away which then will
447 trigger the EOF. This will happen immediately if no
448 other process has the FIFO open for writing, i. e.
449 when the session died before logind (re)started. */
451 fd = session_create_fifo(s);
456 timestamp_deserialize(realtime, &s->timestamp.realtime);
458 timestamp_deserialize(monotonic, &s->timestamp.monotonic);
461 if (bus_name_has_owner(s->manager->bus, controller, NULL) > 0)
462 session_set_controller(s, controller, false);
464 session_restore_vt(s);
470 int session_activate(Session *s) {
471 unsigned int num_pending;
479 if (s->seat->active == s)
482 /* on seats with VTs, we let VTs manage session-switching */
483 if (seat_has_vts(s->seat)) {
487 return chvt(s->vtnr);
490 /* On seats without VTs, we implement session-switching in logind. We
491 * try to pause all session-devices and wait until the session
492 * controller acknowledged them. Once all devices are asleep, we simply
493 * switch the active session and be done.
494 * We save the session we want to switch to in seat->pending_switch and
495 * seat_complete_switch() will perform the final switch. */
497 s->seat->pending_switch = s;
499 /* if no devices are running, immediately perform the session switch */
500 num_pending = session_device_try_pause_all(s);
502 seat_complete_switch(s->seat);
507 #if 0 /// UNNEEDED by elogind
508 static int session_start_scope(Session *s) {
515 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
516 char *scope, *job = NULL;
517 const char *description;
519 scope = strjoin("session-", s->id, ".scope", NULL);
523 description = strjoina("Session ", s->id, " of user ", s->user->name);
525 r = manager_start_scope(
531 "systemd-logind.service",
532 "systemd-user-sessions.service",
533 (uint64_t) -1, /* disable TasksMax= for the scope, rely on the slice setting for it */
537 log_error_errno(r, "Failed to start session scope %s: %s", scope, bus_error_message(&error, r));
549 (void) hashmap_put(s->manager->session_units, s->scope, s);
554 static int session_start_cgroup(Session *s) {
559 assert(s->leader > 0);
561 /* First, create our own group */
562 r = cg_create(SYSTEMD_CGROUP_CONTROLLER, s->id);
564 return log_error_errno(r, "Failed to create cgroup %s: %m", s->id);
566 r = cg_attach(SYSTEMD_CGROUP_CONTROLLER, s->id, s->leader);
568 log_warning_errno(r, "Failed to attach PID %d to cgroup %s: %m", s->leader, s->id);
574 int session_start(Session *s) {
585 r = user_start(s->user);
590 #if 0 /// elogind does its own session management
591 r = session_start_scope(s);
593 r = session_start_cgroup(s);
598 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
599 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_START),
600 "SESSION_ID=%s", s->id,
601 "USER_ID=%s", s->user->name,
602 "LEADER="PID_FMT, s->leader,
603 LOG_MESSAGE("New session %s of user %s.", s->id, s->user->name),
606 if (!dual_timestamp_is_set(&s->timestamp))
607 dual_timestamp_get(&s->timestamp);
610 seat_read_active_vt(s->seat);
614 user_elect_display(s->user);
623 session_send_signal(s, true);
624 user_send_changed(s->user, "Sessions", "Display", NULL);
626 if (s->seat->active == s)
627 seat_send_changed(s->seat, "Sessions", "ActiveSession", NULL);
629 seat_send_changed(s->seat, "Sessions", NULL);
635 #if 0 /// UNNEEDED by elogind
636 static int session_stop_scope(Session *s, bool force) {
637 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
646 if (force || manager_shall_kill(s->manager, s->user->name)) {
647 r = manager_stop_unit(s->manager, s->scope, &error, &job);
649 log_error("Failed to stop session scope: %s", bus_error_message(&error, r));
656 r = manager_abandon_scope(s->manager, s->scope, &error);
658 log_error("Failed to abandon session scope: %s", bus_error_message(&error, r));
666 static int session_stop_cgroup(Session *s, bool force) {
667 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
672 if (force || manager_shall_kill(s->manager, s->user->name)) {
673 r = session_kill(s, KILL_ALL, SIGTERM);
682 int session_stop(Session *s, bool force) {
690 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
693 seat_evict_position(s->seat, s);
695 /* We are going down, don't care about FIFOs anymore */
696 session_remove_fifo(s);
699 #if 0 /// elogind does not start scopes, but sessions
700 r = session_stop_scope(s, force);
702 r = session_stop_cgroup(s, force);
707 user_elect_display(s->user);
715 int session_finalize(Session *s) {
724 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
725 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
726 "SESSION_ID=%s", s->id,
727 "USER_ID=%s", s->user->name,
728 "LEADER="PID_FMT, s->leader,
729 LOG_MESSAGE("Removed session %s.", s->id),
732 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
735 seat_evict_position(s->seat, s);
737 /* Kill session devices */
738 while ((sd = hashmap_first(s->devices)))
739 session_device_free(sd);
741 (void) unlink(s->state_file);
742 session_add_to_gc_queue(s);
743 user_add_to_gc_queue(s->user);
746 session_send_signal(s, false);
751 if (s->seat->active == s)
752 seat_set_active(s->seat, NULL);
755 seat_send_changed(s->seat, "Sessions", NULL);
759 user_send_changed(s->user, "Sessions", "Display", NULL);
764 #if 0 /// UNNEEDED by elogind
765 static int release_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) {
766 Session *s = userdata;
771 session_stop(s, false);
776 int session_release(Session *s) {
779 if (!s->started || s->stopping)
782 if (s->timer_event_source)
785 #if 0 /// UNNEEDED by elogind
786 return sd_event_add_time(s->manager->event,
787 &s->timer_event_source,
789 now(CLOCK_MONOTONIC) + RELEASE_USEC, 0,
790 release_timeout_callback, s);
792 /* In systemd, session release is triggered by user jobs
793 dying. In elogind we don't have that so go ahead and stop
795 return session_stop(s, false);
799 bool session_is_active(Session *s) {
805 return s->seat->active == s;
808 static int get_tty_atime(const char *tty, usec_t *atime) {
809 _cleanup_free_ char *p = NULL;
815 if (!path_is_absolute(tty)) {
816 p = strappend("/dev/", tty);
821 } else if (!path_startswith(tty, "/dev/"))
824 if (lstat(tty, &st) < 0)
827 *atime = timespec_load(&st.st_atim);
831 static int get_process_ctty_atime(pid_t pid, usec_t *atime) {
832 _cleanup_free_ char *p = NULL;
838 r = get_ctty(pid, NULL, &p);
842 return get_tty_atime(p, atime);
845 int session_get_idle_hint(Session *s, dual_timestamp *t) {
851 /* Explicit idle hint is set */
854 *t = s->idle_hint_timestamp;
859 /* Graphical sessions should really implement a real
861 if (SESSION_TYPE_IS_GRAPHICAL(s->type))
864 /* For sessions with an explicitly configured tty, let's check
867 r = get_tty_atime(s->tty, &atime);
872 /* For sessions with a leader but no explicitly configured
873 * tty, let's check the controlling tty of the leader */
875 r = get_process_ctty_atime(s->leader, &atime);
882 *t = s->idle_hint_timestamp;
888 dual_timestamp_from_realtime(t, atime);
890 n = now(CLOCK_REALTIME);
892 if (s->manager->idle_action_usec <= 0)
895 return atime + s->manager->idle_action_usec <= n;
898 void session_set_idle_hint(Session *s, bool b) {
901 if (s->idle_hint == b)
905 dual_timestamp_get(&s->idle_hint_timestamp);
907 session_send_changed(s, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
910 seat_send_changed(s->seat, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
912 user_send_changed(s->user, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
913 manager_send_changed(s->manager, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
916 int session_get_locked_hint(Session *s) {
919 return s->locked_hint;
922 void session_set_locked_hint(Session *s, bool b) {
925 if (s->locked_hint == b)
930 session_send_changed(s, "LockedHint", NULL);
933 static int session_dispatch_fifo(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
934 Session *s = userdata;
937 assert(s->fifo_fd == fd);
939 /* EOF on the FIFO means the session died abnormally. */
941 session_remove_fifo(s);
942 session_stop(s, false);
947 int session_create_fifo(Session *s) {
954 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
958 if (asprintf(&s->fifo_path, "/run/systemd/sessions/%s.ref", s->id) < 0)
961 if (mkfifo(s->fifo_path, 0600) < 0 && errno != EEXIST)
965 /* Open reading side */
966 if (s->fifo_fd < 0) {
967 s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
973 if (!s->fifo_event_source) {
974 r = sd_event_add_io(s->manager->event, &s->fifo_event_source, s->fifo_fd, 0, session_dispatch_fifo, s);
978 /* Let's make sure we noticed dead sessions before we process new bus requests (which might create new
980 r = sd_event_source_set_priority(s->fifo_event_source, SD_EVENT_PRIORITY_NORMAL-10);
985 /* Open writing side */
986 r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY);
993 static void session_remove_fifo(Session *s) {
996 s->fifo_event_source = sd_event_source_unref(s->fifo_event_source);
997 s->fifo_fd = safe_close(s->fifo_fd);
1000 unlink(s->fifo_path);
1001 s->fifo_path = mfree(s->fifo_path);
1005 bool session_check_gc(Session *s, bool drop_not_started) {
1008 if (drop_not_started && !s->started)
1014 if (s->fifo_fd >= 0) {
1015 if (pipe_eof(s->fifo_fd) <= 0)
1019 #if 0 /// elogind supports neither scopes nor jobs
1020 if (s->scope_job && manager_job_is_active(s->manager, s->scope_job))
1023 if (s->scope && manager_unit_is_active(s->manager, s->scope))
1030 void session_add_to_gc_queue(Session *s) {
1036 LIST_PREPEND(gc_queue, s->manager->session_gc_queue, s);
1037 s->in_gc_queue = true;
1040 SessionState session_get_state(Session *s) {
1043 /* always check closing first */
1044 if (s->stopping || s->timer_event_source)
1045 return SESSION_CLOSING;
1047 #if 0 /// elogind does not support systemd scope_jobs
1048 if (s->scope_job || s->fifo_fd < 0)
1052 return SESSION_OPENING;
1054 if (session_is_active(s))
1055 return SESSION_ACTIVE;
1057 return SESSION_ONLINE;
1060 int session_kill(Session *s, KillWho who, int signo) {
1063 #if 0 /// Without direct cgroup support, elogind can not kill sessions
1067 return manager_kill_unit(s->manager, s->scope, who, signo, NULL);
1069 if (who == KILL_LEADER) {
1073 /* FIXME: verify that leader is in cgroup? */
1075 if (kill(s->leader, signo) < 0) {
1076 return log_error_errno(errno, "Failed to kill process leader %d for session %s: %m", s->leader, s->id);
1080 bool sigcont = false;
1081 bool ignore_self = true;
1083 return cg_kill_recursive (SYSTEMD_CGROUP_CONTROLLER, s->id, signo,
1084 sigcont, ignore_self, rem, NULL);
1089 static int session_open_vt(Session *s) {
1090 char path[sizeof("/dev/tty") + DECIMAL_STR_MAX(s->vtnr)];
1098 sprintf(path, "/dev/tty%u", s->vtnr);
1099 s->vtfd = open_terminal(path, O_RDWR | O_CLOEXEC | O_NONBLOCK | O_NOCTTY);
1101 return log_error_errno(s->vtfd, "cannot open VT %s of session %s: %m", path, s->id);
1106 int session_prepare_vt(Session *s) {
1108 struct vt_mode mode = { 0 };
1113 vt = session_open_vt(s);
1117 r = fchown(vt, s->user->uid, -1);
1119 r = log_error_errno(errno,
1120 "Cannot change owner of /dev/tty%u: %m",
1125 r = ioctl(vt, KDSKBMODE, K_OFF);
1127 r = log_error_errno(errno,
1128 "Cannot set K_OFF on /dev/tty%u: %m",
1133 r = ioctl(vt, KDSETMODE, KD_GRAPHICS);
1135 r = log_error_errno(errno,
1136 "Cannot set KD_GRAPHICS on /dev/tty%u: %m",
1141 /* Oh, thanks to the VT layer, VT_AUTO does not work with KD_GRAPHICS.
1142 * So we need a dummy handler here which just acknowledges *all* VT
1143 * switch requests. */
1144 mode.mode = VT_PROCESS;
1145 mode.relsig = SIGRTMIN;
1146 mode.acqsig = SIGRTMIN + 1;
1147 r = ioctl(vt, VT_SETMODE, &mode);
1149 r = log_error_errno(errno,
1150 "Cannot set VT_PROCESS on /dev/tty%u: %m",
1158 session_restore_vt(s);
1162 void session_restore_vt(Session *s) {
1164 static const struct vt_mode mode = {
1168 _cleanup_free_ char *utf8 = NULL;
1171 /* We need to get a fresh handle to the virtual terminal,
1172 * since the old file-descriptor is potentially in a hung-up
1173 * state after the controlling process exited; we do a
1174 * little dance to avoid having the terminal be available
1175 * for reuse before we've cleaned it up.
1180 vt = session_open_vt(s);
1186 (void) ioctl(vt, KDSETMODE, KD_TEXT);
1188 if (read_one_line_file("/sys/module/vt/parameters/default_utf8", &utf8) >= 0 && *utf8 == '1')
1193 (void) ioctl(vt, KDSKBMODE, kb);
1195 (void) ioctl(vt, VT_SETMODE, &mode);
1196 (void) fchown(vt, 0, (gid_t) -1);
1198 s->vtfd = safe_close(s->vtfd);
1201 void session_leave_vt(Session *s) {
1206 /* This is called whenever we get a VT-switch signal from the kernel.
1207 * We acknowledge all of them unconditionally. Note that session are
1208 * free to overwrite those handlers and we only register them for
1209 * sessions with controllers. Legacy sessions are not affected.
1210 * However, if we switch from a non-legacy to a legacy session, we must
1211 * make sure to pause all device before acknowledging the switch. We
1212 * process the real switch only after we are notified via sysfs, so the
1213 * legacy session might have already started using the devices. If we
1214 * don't pause the devices before the switch, we might confuse the
1215 * session we switch to. */
1220 session_device_pause_all(s);
1221 r = ioctl(s->vtfd, VT_RELDISP, 1);
1223 log_debug_errno(errno, "Cannot release VT of session %s: %m", s->id);
1226 bool session_is_controller(Session *s, const char *sender) {
1229 return streq_ptr(s->controller, sender);
1232 static void session_release_controller(Session *s, bool notify) {
1233 _cleanup_free_ char *name = NULL;
1239 name = s->controller;
1241 /* By resetting the controller before releasing the devices, we won't
1242 * send notification signals. This avoids sending useless notifications
1243 * if the controller is released on disconnects. */
1245 s->controller = NULL;
1247 while ((sd = hashmap_first(s->devices)))
1248 session_device_free(sd);
1250 s->controller = NULL;
1251 s->track = sd_bus_track_unref(s->track);
1254 static int on_bus_track(sd_bus_track *track, void *userdata) {
1255 Session *s = userdata;
1260 session_drop_controller(s);
1265 int session_set_controller(Session *s, const char *sender, bool force) {
1266 _cleanup_free_ char *name = NULL;
1272 if (session_is_controller(s, sender))
1274 if (s->controller && !force)
1277 name = strdup(sender);
1281 s->track = sd_bus_track_unref(s->track);
1282 r = sd_bus_track_new(s->manager->bus, &s->track, on_bus_track, s);
1286 r = sd_bus_track_add_name(s->track, name);
1290 /* When setting a session controller, we forcibly mute the VT and set
1291 * it into graphics-mode. Applications can override that by changing
1292 * VT state after calling TakeControl(). However, this serves as a good
1293 * default and well-behaving controllers can now ignore VTs entirely.
1294 * Note that we reset the VT on ReleaseControl() and if the controller
1296 * If logind crashes/restarts, we restore the controller during restart
1297 * or reset the VT in case it crashed/exited, too. */
1298 r = session_prepare_vt(s);
1300 s->track = sd_bus_track_unref(s->track);
1304 session_release_controller(s, true);
1305 s->controller = name;
1312 void session_drop_controller(Session *s) {
1318 s->track = sd_bus_track_unref(s->track);
1319 session_release_controller(s, false);
1321 session_restore_vt(s);
1324 static const char* const session_state_table[_SESSION_STATE_MAX] = {
1325 [SESSION_OPENING] = "opening",
1326 [SESSION_ONLINE] = "online",
1327 [SESSION_ACTIVE] = "active",
1328 [SESSION_CLOSING] = "closing"
1331 DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
1333 static const char* const session_type_table[_SESSION_TYPE_MAX] = {
1334 [SESSION_UNSPECIFIED] = "unspecified",
1335 [SESSION_TTY] = "tty",
1336 [SESSION_X11] = "x11",
1337 [SESSION_WAYLAND] = "wayland",
1338 [SESSION_MIR] = "mir",
1339 [SESSION_WEB] = "web",
1342 DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType);
1344 static const char* const session_class_table[_SESSION_CLASS_MAX] = {
1345 [SESSION_USER] = "user",
1346 [SESSION_GREETER] = "greeter",
1347 [SESSION_LOCK_SCREEN] = "lock-screen",
1348 [SESSION_BACKGROUND] = "background"
1351 DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass);
1353 static const char* const kill_who_table[_KILL_WHO_MAX] = {
1354 [KILL_LEADER] = "leader",
1358 DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);