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 "format-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);
68 s->devices = hashmap_new(&devt_hash_ops);
74 s->id = basename(s->state_file);
76 if (hashmap_put(m->sessions, s->id, s) < 0) {
77 hashmap_free(s->devices);
89 void session_free(Session *s) {
95 LIST_REMOVE(gc_queue, s->manager->session_gc_queue, s);
97 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
99 session_remove_fifo(s);
101 session_drop_controller(s);
103 while ((sd = hashmap_first(s->devices)))
104 session_device_free(sd);
106 hashmap_free(s->devices);
109 LIST_REMOVE(sessions_by_user, s->user->sessions, s);
111 if (s->user->display == s)
112 s->user->display = NULL;
116 if (s->seat->active == s)
117 s->seat->active = NULL;
118 if (s->seat->pending_switch == s)
119 s->seat->pending_switch = NULL;
121 seat_evict_position(s->seat, s);
122 LIST_REMOVE(sessions_by_seat, s->seat->sessions, s);
126 hashmap_remove(s->manager->session_units, s->scope);
130 #if 0 /// elogind does not support systemd scope_jobs
134 sd_bus_message_unref(s->create_message);
138 free(s->remote_host);
139 free(s->remote_user);
143 hashmap_remove(s->manager->sessions, s->id);
149 void session_set_user(Session *s, User *u) {
154 LIST_PREPEND(sessions_by_user, u->sessions, s);
157 int session_save(Session *s) {
158 _cleanup_free_ char *temp_path = NULL;
159 _cleanup_fclose_ FILE *f = NULL;
170 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
174 r = fopen_temporary(s->state_file, &f, &temp_path);
180 fchmod(fileno(f), 0644);
183 "# This is private data. Do not parse.\n"
191 session_is_active(s),
192 session_state_to_string(session_get_state(s)),
196 fprintf(f, "TYPE=%s\n", session_type_to_string(s->type));
199 fprintf(f, "CLASS=%s\n", session_class_to_string(s->class));
202 fprintf(f, "SCOPE=%s\n", s->scope);
203 #if 0 /// elogind does not support systemd scope_jobs
205 fprintf(f, "SCOPE_JOB=%s\n", s->scope_job);
209 fprintf(f, "FIFO=%s\n", s->fifo_path);
212 fprintf(f, "SEAT=%s\n", s->seat->id);
215 fprintf(f, "TTY=%s\n", s->tty);
218 fprintf(f, "DISPLAY=%s\n", s->display);
220 if (s->remote_host) {
221 _cleanup_free_ char *escaped;
223 escaped = cescape(s->remote_host);
229 fprintf(f, "REMOTE_HOST=%s\n", escaped);
232 if (s->remote_user) {
233 _cleanup_free_ char *escaped;
235 escaped = cescape(s->remote_user);
241 fprintf(f, "REMOTE_USER=%s\n", escaped);
245 _cleanup_free_ char *escaped;
247 escaped = cescape(s->service);
253 fprintf(f, "SERVICE=%s\n", escaped);
257 _cleanup_free_ char *escaped;
260 escaped = cescape(s->desktop);
266 fprintf(f, "DESKTOP=%s\n", escaped);
269 if (s->seat && seat_has_vts(s->seat))
270 fprintf(f, "VTNR=%u\n", s->vtnr);
273 fprintf(f, "POSITION=%u\n", s->position);
276 fprintf(f, "LEADER="PID_FMT"\n", s->leader);
279 fprintf(f, "AUDIT=%"PRIu32"\n", s->audit_id);
281 if (dual_timestamp_is_set(&s->timestamp))
283 "REALTIME="USEC_FMT"\n"
284 "MONOTONIC="USEC_FMT"\n",
285 s->timestamp.realtime,
286 s->timestamp.monotonic);
289 fprintf(f, "CONTROLLER=%s\n", s->controller);
291 r = fflush_and_check(f);
295 if (rename(temp_path, s->state_file) < 0) {
303 (void) unlink(s->state_file);
306 (void) unlink(temp_path);
308 return log_error_errno(r, "Failed to save session data %s: %m", s->state_file);
312 int session_load(Session *s) {
313 _cleanup_free_ char *remote = NULL,
330 r = parse_env_file(s->state_file, NEWLINE,
333 #if 0 /// elogind does not support systemd scope_jobs
334 "SCOPE_JOB", &s->scope_job,
336 "FIFO", &s->fifo_path,
339 "DISPLAY", &s->display,
340 "REMOTE_HOST", &s->remote_host,
341 "REMOTE_USER", &s->remote_user,
342 "SERVICE", &s->service,
343 "DESKTOP", &s->desktop,
346 "POSITION", &position,
351 "REALTIME", &realtime,
352 "MONOTONIC", &monotonic,
353 "CONTROLLER", &controller,
357 return log_error_errno(r, "Failed to read %s: %m", s->state_file);
364 log_error("UID not specified for session %s", s->id);
368 r = parse_uid(uid, &u);
370 log_error("Failed to parse UID value %s for session %s.", uid, s->id);
374 user = hashmap_get(s->manager->users, UID_TO_PTR(u));
376 log_error("User of session %s not known.", s->id);
380 session_set_user(s, user);
384 k = parse_boolean(remote);
390 safe_atou(vtnr, &s->vtnr);
392 if (seat && !s->seat) {
395 o = hashmap_get(s->manager->seats, seat);
397 r = seat_attach_session(o, s);
399 log_error("Cannot attach session %s to seat %s", s->id, seat);
402 if (!s->seat || !seat_has_vts(s->seat))
405 if (position && s->seat) {
408 safe_atou(position, &npos);
409 seat_claim_position(s->seat, s, npos);
413 k = parse_pid(leader, &s->leader);
415 audit_session_from_pid(s->leader, &s->audit_id);
421 t = session_type_from_string(type);
429 c = session_class_from_string(class);
434 if (state && streq(state, "closing"))
440 /* If we open an unopened pipe for reading we will not
441 get an EOF. to trigger an EOF we hence open it for
442 writing, but close it right away which then will
443 trigger the EOF. This will happen immediately if no
444 other process has the FIFO open for writing, i. e.
445 when the session died before logind (re)started. */
447 fd = session_create_fifo(s);
452 timestamp_deserialize(realtime, &s->timestamp.realtime);
454 timestamp_deserialize(monotonic, &s->timestamp.monotonic);
457 if (bus_name_has_owner(s->manager->bus, controller, NULL) > 0)
458 session_set_controller(s, controller, false);
460 session_restore_vt(s);
466 int session_activate(Session *s) {
467 unsigned int num_pending;
475 if (s->seat->active == s)
478 /* on seats with VTs, we let VTs manage session-switching */
479 if (seat_has_vts(s->seat)) {
483 return chvt(s->vtnr);
486 /* On seats without VTs, we implement session-switching in logind. We
487 * try to pause all session-devices and wait until the session
488 * controller acknowledged them. Once all devices are asleep, we simply
489 * switch the active session and be done.
490 * We save the session we want to switch to in seat->pending_switch and
491 * seat_complete_switch() will perform the final switch. */
493 s->seat->pending_switch = s;
495 /* if no devices are running, immediately perform the session switch */
496 num_pending = session_device_try_pause_all(s);
498 seat_complete_switch(s->seat);
503 #if 0 /// UNNEEDED by elogind
504 static int session_start_scope(Session *s) {
511 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
512 char *scope, *job = NULL;
513 const char *description;
515 scope = strjoin("session-", s->id, ".scope");
519 description = strjoina("Session ", s->id, " of user ", s->user->name);
521 r = manager_start_scope(
527 "systemd-logind.service",
528 "systemd-user-sessions.service",
529 (uint64_t) -1, /* disable TasksMax= for the scope, rely on the slice setting for it */
533 log_error_errno(r, "Failed to start session scope %s: %s", scope, bus_error_message(&error, r));
545 (void) hashmap_put(s->manager->session_units, s->scope, s);
550 static int session_start_cgroup(Session *s) {
555 assert(s->leader > 0);
557 /* First, create our own group */
558 r = cg_create(SYSTEMD_CGROUP_CONTROLLER, s->id);
560 return log_error_errno(r, "Failed to create cgroup %s: %m", s->id);
562 r = cg_attach(SYSTEMD_CGROUP_CONTROLLER, s->id, s->leader);
564 log_warning_errno(r, "Failed to attach PID %d to cgroup %s: %m", s->leader, s->id);
570 int session_start(Session *s) {
581 r = user_start(s->user);
586 #if 0 /// elogind does its own session management
587 r = session_start_scope(s);
589 r = session_start_cgroup(s);
594 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
595 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_START),
596 "SESSION_ID=%s", s->id,
597 "USER_ID=%s", s->user->name,
598 "LEADER="PID_FMT, s->leader,
599 LOG_MESSAGE("New session %s of user %s.", s->id, s->user->name),
602 if (!dual_timestamp_is_set(&s->timestamp))
603 dual_timestamp_get(&s->timestamp);
606 seat_read_active_vt(s->seat);
610 user_elect_display(s->user);
619 session_send_signal(s, true);
620 user_send_changed(s->user, "Display", NULL);
622 if (s->seat->active == s)
623 seat_send_changed(s->seat, "ActiveSession", NULL);
629 #if 0 /// UNNEEDED by elogind
630 static int session_stop_scope(Session *s, bool force) {
631 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
639 /* Let's always abandon the scope first. This tells systemd that we are not interested anymore, and everything
640 * that is left in the scope is "left-over". Informing systemd about this has the benefit that it will log
641 * when killing any processes left after this point. */
642 r = manager_abandon_scope(s->manager, s->scope, &error);
644 log_warning_errno(r, "Failed to abandon session scope, ignoring: %s", bus_error_message(&error, r));
646 /* Optionally, let's kill everything that's left now. */
647 if (force || manager_shall_kill(s->manager, s->user->name)) {
650 r = manager_stop_unit(s->manager, s->scope, &error, &job);
652 return log_error_errno(r, "Failed to stop session scope: %s", bus_error_message(&error, r));
657 s->scope_job = mfree(s->scope_job);
662 static int session_stop_cgroup(Session *s, bool force) {
663 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
668 if (force || manager_shall_kill(s->manager, s->user->name)) {
669 r = session_kill(s, KILL_ALL, SIGTERM);
678 int session_stop(Session *s, bool force) {
686 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
689 seat_evict_position(s->seat, s);
691 /* We are going down, don't care about FIFOs anymore */
692 session_remove_fifo(s);
695 #if 0 /// elogind does not start scopes, but sessions
696 r = session_stop_scope(s, force);
698 r = session_stop_cgroup(s, force);
703 user_elect_display(s->user);
711 int session_finalize(Session *s) {
720 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
721 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
722 "SESSION_ID=%s", s->id,
723 "USER_ID=%s", s->user->name,
724 "LEADER="PID_FMT, s->leader,
725 LOG_MESSAGE("Removed session %s.", s->id),
728 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
731 seat_evict_position(s->seat, s);
733 /* Kill session devices */
734 while ((sd = hashmap_first(s->devices)))
735 session_device_free(sd);
737 (void) unlink(s->state_file);
738 session_add_to_gc_queue(s);
739 user_add_to_gc_queue(s->user);
742 session_send_signal(s, false);
747 if (s->seat->active == s)
748 seat_set_active(s->seat, NULL);
754 user_send_changed(s->user, "Display", NULL);
759 #if 0 /// UNNEEDED by elogind
760 static int release_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) {
761 Session *s = userdata;
766 session_stop(s, false);
771 int session_release(Session *s) {
774 if (!s->started || s->stopping)
777 if (s->timer_event_source)
780 #if 0 /// UNNEEDED by elogind
781 return sd_event_add_time(s->manager->event,
782 &s->timer_event_source,
784 now(CLOCK_MONOTONIC) + RELEASE_USEC, 0,
785 release_timeout_callback, s);
787 /* In systemd, session release is triggered by user jobs
788 dying. In elogind we don't have that so go ahead and stop
790 return session_stop(s, false);
794 bool session_is_active(Session *s) {
800 return s->seat->active == s;
803 static int get_tty_atime(const char *tty, usec_t *atime) {
804 _cleanup_free_ char *p = NULL;
810 if (!path_is_absolute(tty)) {
811 p = strappend("/dev/", tty);
816 } else if (!path_startswith(tty, "/dev/"))
819 if (lstat(tty, &st) < 0)
822 *atime = timespec_load(&st.st_atim);
826 static int get_process_ctty_atime(pid_t pid, usec_t *atime) {
827 _cleanup_free_ char *p = NULL;
833 r = get_ctty(pid, NULL, &p);
837 return get_tty_atime(p, atime);
840 int session_get_idle_hint(Session *s, dual_timestamp *t) {
846 /* Explicit idle hint is set */
849 *t = s->idle_hint_timestamp;
854 /* Graphical sessions should really implement a real
856 if (SESSION_TYPE_IS_GRAPHICAL(s->type))
859 /* For sessions with an explicitly configured tty, let's check
862 r = get_tty_atime(s->tty, &atime);
867 /* For sessions with a leader but no explicitly configured
868 * tty, let's check the controlling tty of the leader */
870 r = get_process_ctty_atime(s->leader, &atime);
877 *t = s->idle_hint_timestamp;
883 dual_timestamp_from_realtime(t, atime);
885 n = now(CLOCK_REALTIME);
887 if (s->manager->idle_action_usec <= 0)
890 return atime + s->manager->idle_action_usec <= n;
893 void session_set_idle_hint(Session *s, bool b) {
896 if (s->idle_hint == b)
900 dual_timestamp_get(&s->idle_hint_timestamp);
902 session_send_changed(s, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
905 seat_send_changed(s->seat, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
907 user_send_changed(s->user, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
908 manager_send_changed(s->manager, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
911 int session_get_locked_hint(Session *s) {
914 return s->locked_hint;
917 void session_set_locked_hint(Session *s, bool b) {
920 if (s->locked_hint == b)
925 session_send_changed(s, "LockedHint", NULL);
928 static int session_dispatch_fifo(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
929 Session *s = userdata;
932 assert(s->fifo_fd == fd);
934 /* EOF on the FIFO means the session died abnormally. */
936 session_remove_fifo(s);
937 session_stop(s, false);
942 int session_create_fifo(Session *s) {
949 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
953 if (asprintf(&s->fifo_path, "/run/systemd/sessions/%s.ref", s->id) < 0)
956 if (mkfifo(s->fifo_path, 0600) < 0 && errno != EEXIST)
960 /* Open reading side */
961 if (s->fifo_fd < 0) {
962 s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
968 if (!s->fifo_event_source) {
969 r = sd_event_add_io(s->manager->event, &s->fifo_event_source, s->fifo_fd, 0, session_dispatch_fifo, s);
973 /* Let's make sure we noticed dead sessions before we process new bus requests (which might create new
975 r = sd_event_source_set_priority(s->fifo_event_source, SD_EVENT_PRIORITY_NORMAL-10);
980 /* Open writing side */
981 r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY);
988 static void session_remove_fifo(Session *s) {
991 s->fifo_event_source = sd_event_source_unref(s->fifo_event_source);
992 s->fifo_fd = safe_close(s->fifo_fd);
995 unlink(s->fifo_path);
996 s->fifo_path = mfree(s->fifo_path);
1000 bool session_check_gc(Session *s, bool drop_not_started) {
1003 if (drop_not_started && !s->started)
1009 if (s->fifo_fd >= 0) {
1010 if (pipe_eof(s->fifo_fd) <= 0)
1014 #if 0 /// elogind supports neither scopes nor jobs
1015 if (s->scope_job && manager_job_is_active(s->manager, s->scope_job))
1018 if (s->scope && manager_unit_is_active(s->manager, s->scope))
1025 void session_add_to_gc_queue(Session *s) {
1031 LIST_PREPEND(gc_queue, s->manager->session_gc_queue, s);
1032 s->in_gc_queue = true;
1035 SessionState session_get_state(Session *s) {
1038 /* always check closing first */
1039 if (s->stopping || s->timer_event_source)
1040 return SESSION_CLOSING;
1042 #if 0 /// elogind does not support systemd scope_jobs
1043 if (s->scope_job || s->fifo_fd < 0)
1047 return SESSION_OPENING;
1049 if (session_is_active(s))
1050 return SESSION_ACTIVE;
1052 return SESSION_ONLINE;
1055 int session_kill(Session *s, KillWho who, int signo) {
1058 #if 0 /// Without direct cgroup support, elogind can not kill sessions
1062 return manager_kill_unit(s->manager, s->scope, who, signo, NULL);
1064 if (who == KILL_LEADER) {
1068 /* FIXME: verify that leader is in cgroup? */
1070 if (kill(s->leader, signo) < 0) {
1071 return log_error_errno(errno, "Failed to kill process leader %d for session %s: %m", s->leader, s->id);
1075 return cg_kill_recursive (SYSTEMD_CGROUP_CONTROLLER, s->id, signo,
1076 CGROUP_IGNORE_SELF | CGROUP_REMOVE,
1081 static int session_open_vt(Session *s) {
1082 char path[sizeof("/dev/tty") + DECIMAL_STR_MAX(s->vtnr)];
1090 sprintf(path, "/dev/tty%u", s->vtnr);
1091 s->vtfd = open_terminal(path, O_RDWR | O_CLOEXEC | O_NONBLOCK | O_NOCTTY);
1093 return log_error_errno(s->vtfd, "cannot open VT %s of session %s: %m", path, s->id);
1098 int session_prepare_vt(Session *s) {
1100 struct vt_mode mode = { 0 };
1105 vt = session_open_vt(s);
1109 r = fchown(vt, s->user->uid, -1);
1111 r = log_error_errno(errno,
1112 "Cannot change owner of /dev/tty%u: %m",
1117 r = ioctl(vt, KDSKBMODE, K_OFF);
1119 r = log_error_errno(errno,
1120 "Cannot set K_OFF on /dev/tty%u: %m",
1125 r = ioctl(vt, KDSETMODE, KD_GRAPHICS);
1127 r = log_error_errno(errno,
1128 "Cannot set KD_GRAPHICS on /dev/tty%u: %m",
1133 /* Oh, thanks to the VT layer, VT_AUTO does not work with KD_GRAPHICS.
1134 * So we need a dummy handler here which just acknowledges *all* VT
1135 * switch requests. */
1136 mode.mode = VT_PROCESS;
1137 mode.relsig = SIGRTMIN;
1138 mode.acqsig = SIGRTMIN + 1;
1139 r = ioctl(vt, VT_SETMODE, &mode);
1141 r = log_error_errno(errno,
1142 "Cannot set VT_PROCESS on /dev/tty%u: %m",
1150 session_restore_vt(s);
1154 void session_restore_vt(Session *s) {
1156 static const struct vt_mode mode = {
1160 _cleanup_free_ char *utf8 = NULL;
1163 /* We need to get a fresh handle to the virtual terminal,
1164 * since the old file-descriptor is potentially in a hung-up
1165 * state after the controlling process exited; we do a
1166 * little dance to avoid having the terminal be available
1167 * for reuse before we've cleaned it up.
1172 vt = session_open_vt(s);
1178 (void) ioctl(vt, KDSETMODE, KD_TEXT);
1180 if (read_one_line_file("/sys/module/vt/parameters/default_utf8", &utf8) >= 0 && *utf8 == '1')
1185 (void) ioctl(vt, KDSKBMODE, kb);
1187 (void) ioctl(vt, VT_SETMODE, &mode);
1188 (void) fchown(vt, 0, (gid_t) -1);
1190 s->vtfd = safe_close(s->vtfd);
1193 void session_leave_vt(Session *s) {
1198 /* This is called whenever we get a VT-switch signal from the kernel.
1199 * We acknowledge all of them unconditionally. Note that session are
1200 * free to overwrite those handlers and we only register them for
1201 * sessions with controllers. Legacy sessions are not affected.
1202 * However, if we switch from a non-legacy to a legacy session, we must
1203 * make sure to pause all device before acknowledging the switch. We
1204 * process the real switch only after we are notified via sysfs, so the
1205 * legacy session might have already started using the devices. If we
1206 * don't pause the devices before the switch, we might confuse the
1207 * session we switch to. */
1212 session_device_pause_all(s);
1213 r = ioctl(s->vtfd, VT_RELDISP, 1);
1215 log_debug_errno(errno, "Cannot release VT of session %s: %m", s->id);
1218 bool session_is_controller(Session *s, const char *sender) {
1221 return streq_ptr(s->controller, sender);
1224 static void session_release_controller(Session *s, bool notify) {
1225 _cleanup_free_ char *name = NULL;
1231 name = s->controller;
1233 /* By resetting the controller before releasing the devices, we won't
1234 * send notification signals. This avoids sending useless notifications
1235 * if the controller is released on disconnects. */
1237 s->controller = NULL;
1239 while ((sd = hashmap_first(s->devices)))
1240 session_device_free(sd);
1242 s->controller = NULL;
1243 s->track = sd_bus_track_unref(s->track);
1246 static int on_bus_track(sd_bus_track *track, void *userdata) {
1247 Session *s = userdata;
1252 session_drop_controller(s);
1257 int session_set_controller(Session *s, const char *sender, bool force) {
1258 _cleanup_free_ char *name = NULL;
1264 if (session_is_controller(s, sender))
1266 if (s->controller && !force)
1269 name = strdup(sender);
1273 s->track = sd_bus_track_unref(s->track);
1274 r = sd_bus_track_new(s->manager->bus, &s->track, on_bus_track, s);
1278 r = sd_bus_track_add_name(s->track, name);
1282 /* When setting a session controller, we forcibly mute the VT and set
1283 * it into graphics-mode. Applications can override that by changing
1284 * VT state after calling TakeControl(). However, this serves as a good
1285 * default and well-behaving controllers can now ignore VTs entirely.
1286 * Note that we reset the VT on ReleaseControl() and if the controller
1288 * If logind crashes/restarts, we restore the controller during restart
1289 * or reset the VT in case it crashed/exited, too. */
1290 r = session_prepare_vt(s);
1292 s->track = sd_bus_track_unref(s->track);
1296 session_release_controller(s, true);
1297 s->controller = name;
1304 void session_drop_controller(Session *s) {
1310 s->track = sd_bus_track_unref(s->track);
1311 session_release_controller(s, false);
1313 session_restore_vt(s);
1316 static const char* const session_state_table[_SESSION_STATE_MAX] = {
1317 [SESSION_OPENING] = "opening",
1318 [SESSION_ONLINE] = "online",
1319 [SESSION_ACTIVE] = "active",
1320 [SESSION_CLOSING] = "closing"
1323 DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
1325 static const char* const session_type_table[_SESSION_TYPE_MAX] = {
1326 [SESSION_UNSPECIFIED] = "unspecified",
1327 [SESSION_TTY] = "tty",
1328 [SESSION_X11] = "x11",
1329 [SESSION_WAYLAND] = "wayland",
1330 [SESSION_MIR] = "mir",
1331 [SESSION_WEB] = "web",
1334 DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType);
1336 static const char* const session_class_table[_SESSION_CLASS_MAX] = {
1337 [SESSION_USER] = "user",
1338 [SESSION_GREETER] = "greeter",
1339 [SESSION_LOCK_SCREEN] = "lock-screen",
1340 [SESSION_BACKGROUND] = "background"
1343 DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass);
1345 static const char* const kill_who_table[_KILL_WHO_MAX] = {
1346 [KILL_LEADER] = "leader",
1350 DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);