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 <sys/ioctl.h>
31 #include "sd-messages.h"
33 #include "alloc-util.h"
34 #include "audit-util.h"
35 #include "bus-error.h"
40 #include "formats-util.h"
42 #include "logind-session.h"
44 #include "parse-util.h"
45 #include "path-util.h"
46 #include "string-table.h"
47 #include "terminal-util.h"
48 #include "user-util.h"
51 // #define RELEASE_USEC (20*USEC_PER_SEC)
53 static void session_remove_fifo(Session *s);
55 Session* session_new(Manager *m, const char *id) {
60 assert(session_id_valid(id));
66 s->state_file = strappend("/run/systemd/sessions/", id);
72 s->devices = hashmap_new(&devt_hash_ops);
79 s->id = basename(s->state_file);
81 if (hashmap_put(m->sessions, s->id, s) < 0) {
82 hashmap_free(s->devices);
95 void session_free(Session *s) {
101 LIST_REMOVE(gc_queue, s->manager->session_gc_queue, s);
103 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
105 session_remove_fifo(s);
107 session_drop_controller(s);
109 while ((sd = hashmap_first(s->devices)))
110 session_device_free(sd);
112 hashmap_free(s->devices);
115 LIST_REMOVE(sessions_by_user, s->user->sessions, s);
117 if (s->user->display == s)
118 s->user->display = NULL;
122 if (s->seat->active == s)
123 s->seat->active = NULL;
124 if (s->seat->pending_switch == s)
125 s->seat->pending_switch = NULL;
127 seat_evict_position(s->seat, s);
128 LIST_REMOVE(sessions_by_seat, s->seat->sessions, s);
132 hashmap_remove(s->manager->session_units, s->scope);
136 #if 0 /// elogind does not support systemd scope_jobs
140 sd_bus_message_unref(s->create_message);
144 free(s->remote_host);
145 free(s->remote_user);
149 hashmap_remove(s->manager->sessions, s->id);
155 void session_set_user(Session *s, User *u) {
160 LIST_PREPEND(sessions_by_user, u->sessions, s);
163 int session_save(Session *s) {
164 _cleanup_free_ char *temp_path = NULL;
165 _cleanup_fclose_ FILE *f = NULL;
176 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
180 r = fopen_temporary(s->state_file, &f, &temp_path);
186 fchmod(fileno(f), 0644);
189 "# This is private data. Do not parse.\n"
197 session_is_active(s),
198 session_state_to_string(session_get_state(s)),
202 fprintf(f, "TYPE=%s\n", session_type_to_string(s->type));
205 fprintf(f, "CLASS=%s\n", session_class_to_string(s->class));
208 fprintf(f, "SCOPE=%s\n", s->scope);
209 #if 0 /// elogind does not support systemd scope_jobs
211 fprintf(f, "SCOPE_JOB=%s\n", s->scope_job);
215 fprintf(f, "FIFO=%s\n", s->fifo_path);
218 fprintf(f, "SEAT=%s\n", s->seat->id);
221 fprintf(f, "TTY=%s\n", s->tty);
224 fprintf(f, "DISPLAY=%s\n", s->display);
226 if (s->remote_host) {
227 _cleanup_free_ char *escaped;
229 escaped = cescape(s->remote_host);
235 fprintf(f, "REMOTE_HOST=%s\n", escaped);
238 if (s->remote_user) {
239 _cleanup_free_ char *escaped;
241 escaped = cescape(s->remote_user);
247 fprintf(f, "REMOTE_USER=%s\n", escaped);
251 _cleanup_free_ char *escaped;
253 escaped = cescape(s->service);
259 fprintf(f, "SERVICE=%s\n", escaped);
263 _cleanup_free_ char *escaped;
266 escaped = cescape(s->desktop);
272 fprintf(f, "DESKTOP=%s\n", escaped);
275 if (s->seat && seat_has_vts(s->seat))
276 fprintf(f, "VTNR=%u\n", s->vtnr);
279 fprintf(f, "POSITION=%u\n", s->position);
282 fprintf(f, "LEADER="PID_FMT"\n", s->leader);
285 fprintf(f, "AUDIT=%"PRIu32"\n", s->audit_id);
287 if (dual_timestamp_is_set(&s->timestamp))
289 "REALTIME="USEC_FMT"\n"
290 "MONOTONIC="USEC_FMT"\n",
291 s->timestamp.realtime,
292 s->timestamp.monotonic);
295 fprintf(f, "CONTROLLER=%s\n", s->controller);
297 r = fflush_and_check(f);
301 if (rename(temp_path, s->state_file) < 0) {
309 (void) unlink(s->state_file);
312 (void) unlink(temp_path);
314 return log_error_errno(r, "Failed to save session data %s: %m", s->state_file);
318 int session_load(Session *s) {
319 _cleanup_free_ char *remote = NULL,
336 r = parse_env_file(s->state_file, NEWLINE,
339 #if 0 /// elogind does not support systemd scope_jobs
340 "SCOPE_JOB", &s->scope_job,
342 "FIFO", &s->fifo_path,
345 "DISPLAY", &s->display,
346 "REMOTE_HOST", &s->remote_host,
347 "REMOTE_USER", &s->remote_user,
348 "SERVICE", &s->service,
349 "DESKTOP", &s->desktop,
352 "POSITION", &position,
357 "REALTIME", &realtime,
358 "MONOTONIC", &monotonic,
359 "CONTROLLER", &controller,
363 return log_error_errno(r, "Failed to read %s: %m", s->state_file);
370 log_error("UID not specified for session %s", s->id);
374 r = parse_uid(uid, &u);
376 log_error("Failed to parse UID value %s for session %s.", uid, s->id);
380 user = hashmap_get(s->manager->users, UID_TO_PTR(u));
382 log_error("User of session %s not known.", s->id);
386 session_set_user(s, user);
390 k = parse_boolean(remote);
396 safe_atou(vtnr, &s->vtnr);
398 if (seat && !s->seat) {
401 o = hashmap_get(s->manager->seats, seat);
403 r = seat_attach_session(o, s);
405 log_error("Cannot attach session %s to seat %s", s->id, seat);
408 if (!s->seat || !seat_has_vts(s->seat))
411 if (position && s->seat) {
414 safe_atou(position, &npos);
415 seat_claim_position(s->seat, s, npos);
419 k = parse_pid(leader, &s->leader);
421 audit_session_from_pid(s->leader, &s->audit_id);
427 t = session_type_from_string(type);
435 c = session_class_from_string(class);
440 if (state && streq(state, "closing"))
446 /* If we open an unopened pipe for reading we will not
447 get an EOF. to trigger an EOF we hence open it for
448 writing, but close it right away which then will
449 trigger the EOF. This will happen immediately if no
450 other process has the FIFO open for writing, i. e.
451 when the session died before logind (re)started. */
453 fd = session_create_fifo(s);
458 unsigned long long l;
459 if (sscanf(realtime, "%llu", &l) > 0)
460 s->timestamp.realtime = l;
464 unsigned long long l;
465 if (sscanf(monotonic, "%llu", &l) > 0)
466 s->timestamp.monotonic = l;
470 if (bus_name_has_owner(s->manager->bus, controller, NULL) > 0)
471 session_set_controller(s, controller, false);
473 session_restore_vt(s);
479 int session_activate(Session *s) {
480 unsigned int num_pending;
488 if (s->seat->active == s)
491 /* on seats with VTs, we let VTs manage session-switching */
492 if (seat_has_vts(s->seat)) {
496 return chvt(s->vtnr);
499 /* On seats without VTs, we implement session-switching in logind. We
500 * try to pause all session-devices and wait until the session
501 * controller acknowledged them. Once all devices are asleep, we simply
502 * switch the active session and be done.
503 * We save the session we want to switch to in seat->pending_switch and
504 * seat_complete_switch() will perform the final switch. */
506 s->seat->pending_switch = s;
508 /* if no devices are running, immediately perform the session switch */
509 num_pending = session_device_try_pause_all(s);
511 seat_complete_switch(s->seat);
516 #if 0 /// UNNEEDED by elogind
517 static int session_start_scope(Session *s) {
524 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
525 char *scope, *job = NULL;
526 const char *description;
528 scope = strjoin("session-", s->id, ".scope", NULL);
532 description = strjoina("Session ", s->id, " of user ", s->user->name, NULL);
534 r = manager_start_scope(
540 "systemd-logind.service",
541 "systemd-user-sessions.service",
542 (uint64_t) -1, /* disable TasksMax= for the scope, rely on the slice setting for it */
546 log_error_errno(r, "Failed to start session scope %s: %s", scope, bus_error_message(&error, r));
558 (void) hashmap_put(s->manager->session_units, s->scope, s);
564 static int session_start_cgroup(Session *s) {
569 assert(s->leader > 0);
571 /* First, create our own group */
572 r = cg_create(SYSTEMD_CGROUP_CONTROLLER, s->id);
574 return log_error_errno(r, "Failed to create cgroup %s: %m", s->id);
576 r = cg_attach(SYSTEMD_CGROUP_CONTROLLER, s->id, s->leader);
578 log_warning_errno(r, "Failed to attach PID %d to cgroup %s: %m", s->leader, s->id);
584 int session_start(Session *s) {
595 r = user_start(s->user);
600 /// elogind does its own session management without systemd units,
601 /// slices and scopes
603 r = session_start_scope(s);
605 r = session_start_cgroup(s);
610 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
611 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_START),
612 "SESSION_ID=%s", s->id,
613 "USER_ID=%s", s->user->name,
614 "LEADER="PID_FMT, s->leader,
615 LOG_MESSAGE("New session %s of user %s.", s->id, s->user->name),
618 if (!dual_timestamp_is_set(&s->timestamp))
619 dual_timestamp_get(&s->timestamp);
622 seat_read_active_vt(s->seat);
626 user_elect_display(s->user);
635 session_send_signal(s, true);
636 user_send_changed(s->user, "Sessions", "Display", NULL);
638 if (s->seat->active == s)
639 seat_send_changed(s->seat, "Sessions", "ActiveSession", NULL);
641 seat_send_changed(s->seat, "Sessions", NULL);
647 #if 0 /// UNNEEDED by elogind
648 static int session_stop_scope(Session *s, bool force) {
649 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
658 if (force || manager_shall_kill(s->manager, s->user->name)) {
659 r = manager_stop_unit(s->manager, s->scope, &error, &job);
661 log_error("Failed to stop session scope: %s", bus_error_message(&error, r));
668 r = manager_abandon_scope(s->manager, s->scope, &error);
670 log_error("Failed to abandon session scope: %s", bus_error_message(&error, r));
679 static int session_stop_cgroup(Session *s, bool force) {
680 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
685 if (force || manager_shall_kill(s->manager, s->user->name)) {
686 r = session_kill(s, KILL_ALL, SIGTERM);
694 int session_stop(Session *s, bool force) {
702 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
705 seat_evict_position(s->seat, s);
707 /* We are going down, don't care about FIFOs anymore */
708 session_remove_fifo(s);
711 #if 0 /// elogind does not start scopes, but sessions
712 r = session_stop_scope(s, force);
714 r = session_stop_cgroup(s, force);
719 user_elect_display(s->user);
727 int session_finalize(Session *s) {
736 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
737 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
738 "SESSION_ID=%s", s->id,
739 "USER_ID=%s", s->user->name,
740 "LEADER="PID_FMT, s->leader,
741 LOG_MESSAGE("Removed session %s.", s->id),
744 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
747 seat_evict_position(s->seat, s);
749 /* Kill session devices */
750 while ((sd = hashmap_first(s->devices)))
751 session_device_free(sd);
753 (void) unlink(s->state_file);
754 session_add_to_gc_queue(s);
755 user_add_to_gc_queue(s->user);
758 session_send_signal(s, false);
763 if (s->seat->active == s)
764 seat_set_active(s->seat, NULL);
767 seat_send_changed(s->seat, "Sessions", NULL);
771 user_send_changed(s->user, "Sessions", "Display", NULL);
776 #if 0 /// UNNEEDED by elogind
777 static int release_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) {
778 Session *s = userdata;
783 session_stop(s, false);
788 int session_release(Session *s) {
791 if (!s->started || s->stopping)
794 if (s->timer_event_source)
797 /* In systemd, session release is triggered by user jobs
798 dying. In elogind we don't have that so go ahead and stop
801 return sd_event_add_time(s->manager->event,
802 &s->timer_event_source,
804 now(CLOCK_MONOTONIC) + RELEASE_USEC, 0,
805 release_timeout_callback, s);
808 return session_stop(s, false);
812 bool session_is_active(Session *s) {
818 return s->seat->active == s;
821 static int get_tty_atime(const char *tty, usec_t *atime) {
822 _cleanup_free_ char *p = NULL;
828 if (!path_is_absolute(tty)) {
829 p = strappend("/dev/", tty);
834 } else if (!path_startswith(tty, "/dev/"))
837 if (lstat(tty, &st) < 0)
840 *atime = timespec_load(&st.st_atim);
844 static int get_process_ctty_atime(pid_t pid, usec_t *atime) {
845 _cleanup_free_ char *p = NULL;
851 r = get_ctty(pid, NULL, &p);
855 return get_tty_atime(p, atime);
858 int session_get_idle_hint(Session *s, dual_timestamp *t) {
864 /* Explicit idle hint is set */
867 *t = s->idle_hint_timestamp;
872 /* Graphical sessions should really implement a real
877 /* For sessions with an explicitly configured tty, let's check
880 r = get_tty_atime(s->tty, &atime);
885 /* For sessions with a leader but no explicitly configured
886 * tty, let's check the controlling tty of the leader */
888 r = get_process_ctty_atime(s->leader, &atime);
895 *t = s->idle_hint_timestamp;
901 dual_timestamp_from_realtime(t, atime);
903 n = now(CLOCK_REALTIME);
905 if (s->manager->idle_action_usec <= 0)
908 return atime + s->manager->idle_action_usec <= n;
911 void session_set_idle_hint(Session *s, bool b) {
914 if (s->idle_hint == b)
918 dual_timestamp_get(&s->idle_hint_timestamp);
920 session_send_changed(s, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
923 seat_send_changed(s->seat, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
925 user_send_changed(s->user, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
926 manager_send_changed(s->manager, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
929 static int session_dispatch_fifo(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
930 Session *s = userdata;
933 assert(s->fifo_fd == fd);
935 /* EOF on the FIFO means the session died abnormally. */
937 session_remove_fifo(s);
938 session_stop(s, false);
943 int session_create_fifo(Session *s) {
950 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
954 if (asprintf(&s->fifo_path, "/run/systemd/sessions/%s.ref", s->id) < 0)
957 if (mkfifo(s->fifo_path, 0600) < 0 && errno != EEXIST)
961 /* Open reading side */
962 if (s->fifo_fd < 0) {
963 s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
969 if (!s->fifo_event_source) {
970 r = sd_event_add_io(s->manager->event, &s->fifo_event_source, s->fifo_fd, 0, session_dispatch_fifo, s);
974 r = sd_event_source_set_priority(s->fifo_event_source, SD_EVENT_PRIORITY_IDLE);
979 /* Open writing side */
980 r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY);
987 static void session_remove_fifo(Session *s) {
990 s->fifo_event_source = sd_event_source_unref(s->fifo_event_source);
991 s->fifo_fd = safe_close(s->fifo_fd);
994 unlink(s->fifo_path);
995 s->fifo_path = mfree(s->fifo_path);
999 bool session_check_gc(Session *s, bool drop_not_started) {
1002 if (drop_not_started && !s->started)
1008 if (s->fifo_fd >= 0) {
1009 if (pipe_eof(s->fifo_fd) <= 0)
1013 #if 0 /// elogind supports neither scopes nor jobs
1014 if (s->scope_job && manager_job_is_active(s->manager, s->scope_job))
1017 if (s->scope && manager_unit_is_active(s->manager, s->scope))
1021 if ( s->user->manager
1022 && (cg_is_empty_recursive (SYSTEMD_CGROUP_CONTROLLER, s->user->manager->cgroup_root) > 0) )
1028 void session_add_to_gc_queue(Session *s) {
1034 LIST_PREPEND(gc_queue, s->manager->session_gc_queue, s);
1035 s->in_gc_queue = true;
1038 SessionState session_get_state(Session *s) {
1041 /* always check closing first */
1042 if (s->stopping || s->timer_event_source)
1043 return SESSION_CLOSING;
1045 #if 0 /// elogind does not support systemd scope_jobs
1046 if (s->scope_job || s->fifo_fd < 0)
1050 return SESSION_OPENING;
1052 if (session_is_active(s))
1053 return SESSION_ACTIVE;
1055 return SESSION_ONLINE;
1058 int session_kill(Session *s, KillWho who, int signo) {
1061 #if 0 /// Without direct cgroup support, elogind can not kill sessions
1065 return manager_kill_unit(s->manager, s->scope, who, signo, NULL);
1067 if (who == KILL_LEADER) {
1071 /* FIXME: verify that leader is in cgroup? */
1073 if (kill(s->leader, signo) < 0) {
1074 return log_error_errno(errno, "Failed to kill process leader %d for session %s: %m", s->leader, s->id);
1078 bool sigcont = false;
1079 bool ignore_self = true;
1081 return cg_kill_recursive (SYSTEMD_CGROUP_CONTROLLER, s->id, signo,
1082 sigcont, ignore_self, rem, NULL);
1087 static int session_open_vt(Session *s) {
1088 char path[sizeof("/dev/tty") + DECIMAL_STR_MAX(s->vtnr)];
1096 sprintf(path, "/dev/tty%u", s->vtnr);
1097 s->vtfd = open_terminal(path, O_RDWR | O_CLOEXEC | O_NONBLOCK | O_NOCTTY);
1099 return log_error_errno(s->vtfd, "cannot open VT %s of session %s: %m", path, s->id);
1104 int session_prepare_vt(Session *s) {
1106 struct vt_mode mode = { 0 };
1111 vt = session_open_vt(s);
1115 r = fchown(vt, s->user->uid, -1);
1117 r = log_error_errno(errno,
1118 "Cannot change owner of /dev/tty%u: %m",
1123 r = ioctl(vt, KDSKBMODE, K_OFF);
1125 r = log_error_errno(errno,
1126 "Cannot set K_OFF on /dev/tty%u: %m",
1131 r = ioctl(vt, KDSETMODE, KD_GRAPHICS);
1133 r = log_error_errno(errno,
1134 "Cannot set KD_GRAPHICS on /dev/tty%u: %m",
1139 /* Oh, thanks to the VT layer, VT_AUTO does not work with KD_GRAPHICS.
1140 * So we need a dummy handler here which just acknowledges *all* VT
1141 * switch requests. */
1142 mode.mode = VT_PROCESS;
1143 mode.relsig = SIGRTMIN;
1144 mode.acqsig = SIGRTMIN + 1;
1145 r = ioctl(vt, VT_SETMODE, &mode);
1147 r = log_error_errno(errno,
1148 "Cannot set VT_PROCESS on /dev/tty%u: %m",
1156 session_restore_vt(s);
1160 void session_restore_vt(Session *s) {
1162 static const struct vt_mode mode = {
1166 _cleanup_free_ char *utf8 = NULL;
1169 /* We need to get a fresh handle to the virtual terminal,
1170 * since the old file-descriptor is potentially in a hung-up
1171 * state after the controlling process exited; we do a
1172 * little dance to avoid having the terminal be available
1173 * for reuse before we've cleaned it up.
1178 vt = session_open_vt(s);
1184 (void) ioctl(vt, KDSETMODE, KD_TEXT);
1186 if (read_one_line_file("/sys/module/vt/parameters/default_utf8", &utf8) >= 0 && *utf8 == '1')
1191 (void) ioctl(vt, KDSKBMODE, kb);
1193 (void) ioctl(vt, VT_SETMODE, &mode);
1194 (void) fchown(vt, 0, (gid_t) -1);
1196 s->vtfd = safe_close(s->vtfd);
1199 void session_leave_vt(Session *s) {
1204 /* This is called whenever we get a VT-switch signal from the kernel.
1205 * We acknowledge all of them unconditionally. Note that session are
1206 * free to overwrite those handlers and we only register them for
1207 * sessions with controllers. Legacy sessions are not affected.
1208 * However, if we switch from a non-legacy to a legacy session, we must
1209 * make sure to pause all device before acknowledging the switch. We
1210 * process the real switch only after we are notified via sysfs, so the
1211 * legacy session might have already started using the devices. If we
1212 * don't pause the devices before the switch, we might confuse the
1213 * session we switch to. */
1218 session_device_pause_all(s);
1219 r = ioctl(s->vtfd, VT_RELDISP, 1);
1221 log_debug_errno(errno, "Cannot release VT of session %s: %m", s->id);
1224 bool session_is_controller(Session *s, const char *sender) {
1227 return streq_ptr(s->controller, sender);
1230 static void session_release_controller(Session *s, bool notify) {
1231 _cleanup_free_ char *name = NULL;
1237 name = s->controller;
1239 /* By resetting the controller before releasing the devices, we won't
1240 * send notification signals. This avoids sending useless notifications
1241 * if the controller is released on disconnects. */
1243 s->controller = NULL;
1245 while ((sd = hashmap_first(s->devices)))
1246 session_device_free(sd);
1248 s->controller = NULL;
1249 s->track = sd_bus_track_unref(s->track);
1252 static int on_bus_track(sd_bus_track *track, void *userdata) {
1253 Session *s = userdata;
1258 session_drop_controller(s);
1263 int session_set_controller(Session *s, const char *sender, bool force) {
1264 _cleanup_free_ char *name = NULL;
1270 if (session_is_controller(s, sender))
1272 if (s->controller && !force)
1275 name = strdup(sender);
1279 s->track = sd_bus_track_unref(s->track);
1280 r = sd_bus_track_new(s->manager->bus, &s->track, on_bus_track, s);
1284 r = sd_bus_track_add_name(s->track, name);
1288 /* When setting a session controller, we forcibly mute the VT and set
1289 * it into graphics-mode. Applications can override that by changing
1290 * VT state after calling TakeControl(). However, this serves as a good
1291 * default and well-behaving controllers can now ignore VTs entirely.
1292 * Note that we reset the VT on ReleaseControl() and if the controller
1294 * If logind crashes/restarts, we restore the controller during restart
1295 * or reset the VT in case it crashed/exited, too. */
1296 r = session_prepare_vt(s);
1298 s->track = sd_bus_track_unref(s->track);
1302 session_release_controller(s, true);
1303 s->controller = name;
1310 void session_drop_controller(Session *s) {
1316 s->track = sd_bus_track_unref(s->track);
1317 session_release_controller(s, false);
1319 session_restore_vt(s);
1322 static const char* const session_state_table[_SESSION_STATE_MAX] = {
1323 [SESSION_OPENING] = "opening",
1324 [SESSION_ONLINE] = "online",
1325 [SESSION_ACTIVE] = "active",
1326 [SESSION_CLOSING] = "closing"
1329 DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
1331 static const char* const session_type_table[_SESSION_TYPE_MAX] = {
1332 [SESSION_UNSPECIFIED] = "unspecified",
1333 [SESSION_TTY] = "tty",
1334 [SESSION_X11] = "x11",
1335 [SESSION_WAYLAND] = "wayland",
1336 [SESSION_MIR] = "mir",
1337 [SESSION_WEB] = "web",
1340 DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType);
1342 static const char* const session_class_table[_SESSION_CLASS_MAX] = {
1343 [SESSION_USER] = "user",
1344 [SESSION_GREETER] = "greeter",
1345 [SESSION_LOCK_SCREEN] = "lock-screen",
1346 [SESSION_BACKGROUND] = "background"
1349 DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass);
1351 static const char* const kill_who_table[_KILL_WHO_MAX] = {
1352 [KILL_LEADER] = "leader",
1356 DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);