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);
455 deserialize_timestamp_value(realtime, &s->timestamp.realtime);
456 deserialize_timestamp_value(monotonic, &s->timestamp.monotonic);
459 if (bus_name_has_owner(s->manager->bus, controller, NULL) > 0)
460 session_set_controller(s, controller, false);
462 session_restore_vt(s);
468 int session_activate(Session *s) {
469 unsigned int num_pending;
477 if (s->seat->active == s)
480 /* on seats with VTs, we let VTs manage session-switching */
481 if (seat_has_vts(s->seat)) {
485 return chvt(s->vtnr);
488 /* On seats without VTs, we implement session-switching in logind. We
489 * try to pause all session-devices and wait until the session
490 * controller acknowledged them. Once all devices are asleep, we simply
491 * switch the active session and be done.
492 * We save the session we want to switch to in seat->pending_switch and
493 * seat_complete_switch() will perform the final switch. */
495 s->seat->pending_switch = s;
497 /* if no devices are running, immediately perform the session switch */
498 num_pending = session_device_try_pause_all(s);
500 seat_complete_switch(s->seat);
505 #if 0 /// UNNEEDED by elogind
506 static int session_start_scope(Session *s) {
513 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
514 char *scope, *job = NULL;
515 const char *description;
517 scope = strjoin("session-", s->id, ".scope", NULL);
521 description = strjoina("Session ", s->id, " of user ", s->user->name, NULL);
523 r = manager_start_scope(
529 "systemd-logind.service",
530 "systemd-user-sessions.service",
531 (uint64_t) -1, /* disable TasksMax= for the scope, rely on the slice setting for it */
535 log_error_errno(r, "Failed to start session scope %s: %s", scope, bus_error_message(&error, r));
547 (void) hashmap_put(s->manager->session_units, s->scope, s);
553 static int session_start_cgroup(Session *s) {
558 assert(s->leader > 0);
560 /* First, create our own group */
561 r = cg_create(SYSTEMD_CGROUP_CONTROLLER, s->id);
563 return log_error_errno(r, "Failed to create cgroup %s: %m", s->id);
565 r = cg_attach(SYSTEMD_CGROUP_CONTROLLER, s->id, s->leader);
567 log_warning_errno(r, "Failed to attach PID %d to cgroup %s: %m", s->leader, s->id);
573 int session_start(Session *s) {
584 r = user_start(s->user);
589 /// elogind does its own session management without systemd units,
590 /// slices and scopes
592 r = session_start_scope(s);
594 r = session_start_cgroup(s);
599 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
600 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_START),
601 "SESSION_ID=%s", s->id,
602 "USER_ID=%s", s->user->name,
603 "LEADER="PID_FMT, s->leader,
604 LOG_MESSAGE("New session %s of user %s.", s->id, s->user->name),
607 if (!dual_timestamp_is_set(&s->timestamp))
608 dual_timestamp_get(&s->timestamp);
611 seat_read_active_vt(s->seat);
615 user_elect_display(s->user);
624 session_send_signal(s, true);
625 user_send_changed(s->user, "Sessions", "Display", NULL);
627 if (s->seat->active == s)
628 seat_send_changed(s->seat, "Sessions", "ActiveSession", NULL);
630 seat_send_changed(s->seat, "Sessions", NULL);
636 #if 0 /// UNNEEDED by elogind
637 static int session_stop_scope(Session *s, bool force) {
638 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
647 if (force || manager_shall_kill(s->manager, s->user->name)) {
648 r = manager_stop_unit(s->manager, s->scope, &error, &job);
650 log_error("Failed to stop session scope: %s", bus_error_message(&error, r));
657 r = manager_abandon_scope(s->manager, s->scope, &error);
659 log_error("Failed to abandon session scope: %s", bus_error_message(&error, r));
668 static int session_stop_cgroup(Session *s, bool force) {
669 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
674 if (force || manager_shall_kill(s->manager, s->user->name)) {
675 r = session_kill(s, KILL_ALL, SIGTERM);
683 int session_stop(Session *s, bool force) {
691 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
694 seat_evict_position(s->seat, s);
696 /* We are going down, don't care about FIFOs anymore */
697 session_remove_fifo(s);
700 #if 0 /// elogind does not start scopes, but sessions
701 r = session_stop_scope(s, force);
703 r = session_stop_cgroup(s, force);
708 user_elect_display(s->user);
716 int session_finalize(Session *s) {
725 log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO,
726 LOG_MESSAGE_ID(SD_MESSAGE_SESSION_STOP),
727 "SESSION_ID=%s", s->id,
728 "USER_ID=%s", s->user->name,
729 "LEADER="PID_FMT, s->leader,
730 LOG_MESSAGE("Removed session %s.", s->id),
733 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
736 seat_evict_position(s->seat, s);
738 /* Kill session devices */
739 while ((sd = hashmap_first(s->devices)))
740 session_device_free(sd);
742 (void) unlink(s->state_file);
743 session_add_to_gc_queue(s);
744 user_add_to_gc_queue(s->user);
747 session_send_signal(s, false);
752 if (s->seat->active == s)
753 seat_set_active(s->seat, NULL);
756 seat_send_changed(s->seat, "Sessions", NULL);
760 user_send_changed(s->user, "Sessions", "Display", NULL);
765 #if 0 /// UNNEEDED by elogind
766 static int release_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) {
767 Session *s = userdata;
772 session_stop(s, false);
777 int session_release(Session *s) {
780 if (!s->started || s->stopping)
783 if (s->timer_event_source)
786 /* In systemd, session release is triggered by user jobs
787 dying. In elogind we don't have that so go ahead and stop
790 return sd_event_add_time(s->manager->event,
791 &s->timer_event_source,
793 now(CLOCK_MONOTONIC) + RELEASE_USEC, 0,
794 release_timeout_callback, s);
797 return session_stop(s, false);
801 bool session_is_active(Session *s) {
807 return s->seat->active == s;
810 static int get_tty_atime(const char *tty, usec_t *atime) {
811 _cleanup_free_ char *p = NULL;
817 if (!path_is_absolute(tty)) {
818 p = strappend("/dev/", tty);
823 } else if (!path_startswith(tty, "/dev/"))
826 if (lstat(tty, &st) < 0)
829 *atime = timespec_load(&st.st_atim);
833 static int get_process_ctty_atime(pid_t pid, usec_t *atime) {
834 _cleanup_free_ char *p = NULL;
840 r = get_ctty(pid, NULL, &p);
844 return get_tty_atime(p, atime);
847 int session_get_idle_hint(Session *s, dual_timestamp *t) {
853 /* Explicit idle hint is set */
856 *t = s->idle_hint_timestamp;
861 /* Graphical sessions should really implement a real
866 /* For sessions with an explicitly configured tty, let's check
869 r = get_tty_atime(s->tty, &atime);
874 /* For sessions with a leader but no explicitly configured
875 * tty, let's check the controlling tty of the leader */
877 r = get_process_ctty_atime(s->leader, &atime);
884 *t = s->idle_hint_timestamp;
890 dual_timestamp_from_realtime(t, atime);
892 n = now(CLOCK_REALTIME);
894 if (s->manager->idle_action_usec <= 0)
897 return atime + s->manager->idle_action_usec <= n;
900 void session_set_idle_hint(Session *s, bool b) {
903 if (s->idle_hint == b)
907 dual_timestamp_get(&s->idle_hint_timestamp);
909 session_send_changed(s, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
912 seat_send_changed(s->seat, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
914 user_send_changed(s->user, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
915 manager_send_changed(s->manager, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
918 static int session_dispatch_fifo(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
919 Session *s = userdata;
922 assert(s->fifo_fd == fd);
924 /* EOF on the FIFO means the session died abnormally. */
926 session_remove_fifo(s);
927 session_stop(s, false);
932 int session_create_fifo(Session *s) {
939 r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0);
943 if (asprintf(&s->fifo_path, "/run/systemd/sessions/%s.ref", s->id) < 0)
946 if (mkfifo(s->fifo_path, 0600) < 0 && errno != EEXIST)
950 /* Open reading side */
951 if (s->fifo_fd < 0) {
952 s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
958 if (!s->fifo_event_source) {
959 r = sd_event_add_io(s->manager->event, &s->fifo_event_source, s->fifo_fd, 0, session_dispatch_fifo, s);
963 r = sd_event_source_set_priority(s->fifo_event_source, SD_EVENT_PRIORITY_IDLE);
968 /* Open writing side */
969 r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY);
976 static void session_remove_fifo(Session *s) {
979 s->fifo_event_source = sd_event_source_unref(s->fifo_event_source);
980 s->fifo_fd = safe_close(s->fifo_fd);
983 unlink(s->fifo_path);
984 s->fifo_path = mfree(s->fifo_path);
988 bool session_check_gc(Session *s, bool drop_not_started) {
991 if (drop_not_started && !s->started)
997 if (s->fifo_fd >= 0) {
998 if (pipe_eof(s->fifo_fd) <= 0)
1002 #if 0 /// elogind supports neither scopes nor jobs
1003 if (s->scope_job && manager_job_is_active(s->manager, s->scope_job))
1006 if (s->scope && manager_unit_is_active(s->manager, s->scope))
1010 if ( s->user->manager
1011 && (cg_is_empty_recursive (SYSTEMD_CGROUP_CONTROLLER, s->user->manager->cgroup_root) > 0) )
1017 void session_add_to_gc_queue(Session *s) {
1023 LIST_PREPEND(gc_queue, s->manager->session_gc_queue, s);
1024 s->in_gc_queue = true;
1027 SessionState session_get_state(Session *s) {
1030 /* always check closing first */
1031 if (s->stopping || s->timer_event_source)
1032 return SESSION_CLOSING;
1034 #if 0 /// elogind does not support systemd scope_jobs
1035 if (s->scope_job || s->fifo_fd < 0)
1039 return SESSION_OPENING;
1041 if (session_is_active(s))
1042 return SESSION_ACTIVE;
1044 return SESSION_ONLINE;
1047 int session_kill(Session *s, KillWho who, int signo) {
1050 #if 0 /// Without direct cgroup support, elogind can not kill sessions
1054 return manager_kill_unit(s->manager, s->scope, who, signo, NULL);
1056 if (who == KILL_LEADER) {
1060 /* FIXME: verify that leader is in cgroup? */
1062 if (kill(s->leader, signo) < 0) {
1063 return log_error_errno(errno, "Failed to kill process leader %d for session %s: %m", s->leader, s->id);
1067 bool sigcont = false;
1068 bool ignore_self = true;
1070 return cg_kill_recursive (SYSTEMD_CGROUP_CONTROLLER, s->id, signo,
1071 sigcont, ignore_self, rem, NULL);
1076 static int session_open_vt(Session *s) {
1077 char path[sizeof("/dev/tty") + DECIMAL_STR_MAX(s->vtnr)];
1085 sprintf(path, "/dev/tty%u", s->vtnr);
1086 s->vtfd = open_terminal(path, O_RDWR | O_CLOEXEC | O_NONBLOCK | O_NOCTTY);
1088 return log_error_errno(s->vtfd, "cannot open VT %s of session %s: %m", path, s->id);
1093 int session_prepare_vt(Session *s) {
1095 struct vt_mode mode = { 0 };
1100 vt = session_open_vt(s);
1104 r = fchown(vt, s->user->uid, -1);
1106 r = log_error_errno(errno,
1107 "Cannot change owner of /dev/tty%u: %m",
1112 r = ioctl(vt, KDSKBMODE, K_OFF);
1114 r = log_error_errno(errno,
1115 "Cannot set K_OFF on /dev/tty%u: %m",
1120 r = ioctl(vt, KDSETMODE, KD_GRAPHICS);
1122 r = log_error_errno(errno,
1123 "Cannot set KD_GRAPHICS on /dev/tty%u: %m",
1128 /* Oh, thanks to the VT layer, VT_AUTO does not work with KD_GRAPHICS.
1129 * So we need a dummy handler here which just acknowledges *all* VT
1130 * switch requests. */
1131 mode.mode = VT_PROCESS;
1132 mode.relsig = SIGRTMIN;
1133 mode.acqsig = SIGRTMIN + 1;
1134 r = ioctl(vt, VT_SETMODE, &mode);
1136 r = log_error_errno(errno,
1137 "Cannot set VT_PROCESS on /dev/tty%u: %m",
1145 session_restore_vt(s);
1149 void session_restore_vt(Session *s) {
1151 static const struct vt_mode mode = {
1155 _cleanup_free_ char *utf8 = NULL;
1158 /* We need to get a fresh handle to the virtual terminal,
1159 * since the old file-descriptor is potentially in a hung-up
1160 * state after the controlling process exited; we do a
1161 * little dance to avoid having the terminal be available
1162 * for reuse before we've cleaned it up.
1167 vt = session_open_vt(s);
1173 (void) ioctl(vt, KDSETMODE, KD_TEXT);
1175 if (read_one_line_file("/sys/module/vt/parameters/default_utf8", &utf8) >= 0 && *utf8 == '1')
1180 (void) ioctl(vt, KDSKBMODE, kb);
1182 (void) ioctl(vt, VT_SETMODE, &mode);
1183 (void) fchown(vt, 0, (gid_t) -1);
1185 s->vtfd = safe_close(s->vtfd);
1188 void session_leave_vt(Session *s) {
1193 /* This is called whenever we get a VT-switch signal from the kernel.
1194 * We acknowledge all of them unconditionally. Note that session are
1195 * free to overwrite those handlers and we only register them for
1196 * sessions with controllers. Legacy sessions are not affected.
1197 * However, if we switch from a non-legacy to a legacy session, we must
1198 * make sure to pause all device before acknowledging the switch. We
1199 * process the real switch only after we are notified via sysfs, so the
1200 * legacy session might have already started using the devices. If we
1201 * don't pause the devices before the switch, we might confuse the
1202 * session we switch to. */
1207 session_device_pause_all(s);
1208 r = ioctl(s->vtfd, VT_RELDISP, 1);
1210 log_debug_errno(errno, "Cannot release VT of session %s: %m", s->id);
1213 bool session_is_controller(Session *s, const char *sender) {
1216 return streq_ptr(s->controller, sender);
1219 static void session_release_controller(Session *s, bool notify) {
1220 _cleanup_free_ char *name = NULL;
1226 name = s->controller;
1228 /* By resetting the controller before releasing the devices, we won't
1229 * send notification signals. This avoids sending useless notifications
1230 * if the controller is released on disconnects. */
1232 s->controller = NULL;
1234 while ((sd = hashmap_first(s->devices)))
1235 session_device_free(sd);
1237 s->controller = NULL;
1238 s->track = sd_bus_track_unref(s->track);
1241 static int on_bus_track(sd_bus_track *track, void *userdata) {
1242 Session *s = userdata;
1247 session_drop_controller(s);
1252 int session_set_controller(Session *s, const char *sender, bool force) {
1253 _cleanup_free_ char *name = NULL;
1259 if (session_is_controller(s, sender))
1261 if (s->controller && !force)
1264 name = strdup(sender);
1268 s->track = sd_bus_track_unref(s->track);
1269 r = sd_bus_track_new(s->manager->bus, &s->track, on_bus_track, s);
1273 r = sd_bus_track_add_name(s->track, name);
1277 /* When setting a session controller, we forcibly mute the VT and set
1278 * it into graphics-mode. Applications can override that by changing
1279 * VT state after calling TakeControl(). However, this serves as a good
1280 * default and well-behaving controllers can now ignore VTs entirely.
1281 * Note that we reset the VT on ReleaseControl() and if the controller
1283 * If logind crashes/restarts, we restore the controller during restart
1284 * or reset the VT in case it crashed/exited, too. */
1285 r = session_prepare_vt(s);
1287 s->track = sd_bus_track_unref(s->track);
1291 session_release_controller(s, true);
1292 s->controller = name;
1299 void session_drop_controller(Session *s) {
1305 s->track = sd_bus_track_unref(s->track);
1306 session_release_controller(s, false);
1308 session_restore_vt(s);
1311 static const char* const session_state_table[_SESSION_STATE_MAX] = {
1312 [SESSION_OPENING] = "opening",
1313 [SESSION_ONLINE] = "online",
1314 [SESSION_ACTIVE] = "active",
1315 [SESSION_CLOSING] = "closing"
1318 DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
1320 static const char* const session_type_table[_SESSION_TYPE_MAX] = {
1321 [SESSION_UNSPECIFIED] = "unspecified",
1322 [SESSION_TTY] = "tty",
1323 [SESSION_X11] = "x11",
1324 [SESSION_WAYLAND] = "wayland",
1325 [SESSION_MIR] = "mir",
1326 [SESSION_WEB] = "web",
1329 DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType);
1331 static const char* const session_class_table[_SESSION_CLASS_MAX] = {
1332 [SESSION_USER] = "user",
1333 [SESSION_GREETER] = "greeter",
1334 [SESSION_LOCK_SCREEN] = "lock-screen",
1335 [SESSION_BACKGROUND] = "background"
1338 DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass);
1340 static const char* const kill_who_table[_KILL_WHO_MAX] = {
1341 [KILL_LEADER] = "leader",
1345 DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);