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20263082 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
20263082 LP |
11 | (at your option) any later version. |
12 | ||
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
20263082 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
20263082 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
90a18413 DH |
23 | #include <fcntl.h> |
24 | #include <linux/vt.h> | |
25 | #include <linux/kd.h> | |
26 | #include <signal.h> | |
20263082 | 27 | #include <string.h> |
90a18413 | 28 | #include <sys/ioctl.h> |
20263082 LP |
29 | #include <unistd.h> |
30 | ||
cc377381 LP |
31 | #include "sd-id128.h" |
32 | #include "sd-messages.h" | |
20263082 LP |
33 | #include "strv.h" |
34 | #include "util.h" | |
49e942b2 | 35 | #include "mkdir.h" |
9eb977db | 36 | #include "path-util.h" |
a5c32cff | 37 | #include "fileio.h" |
cc377381 LP |
38 | #include "audit.h" |
39 | #include "bus-util.h" | |
40 | #include "bus-error.h" | |
fb6becb4 | 41 | #include "logind-session.h" |
20263082 | 42 | |
5f41d1f1 LP |
43 | #define RELEASE_USEC (20*USEC_PER_SEC) |
44 | ||
45 | static void session_remove_fifo(Session *s); | |
46 | ||
9bf3b535 | 47 | static unsigned long devt_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) { |
831dedef DH |
48 | uint64_t u = *(const dev_t*)p; |
49 | ||
9bf3b535 | 50 | return uint64_hash_func(&u, hash_key); |
831dedef DH |
51 | } |
52 | ||
53 | static int devt_compare_func(const void *_a, const void *_b) { | |
54 | dev_t a, b; | |
55 | ||
56 | a = *(const dev_t*) _a; | |
57 | b = *(const dev_t*) _b; | |
58 | ||
59 | return a < b ? -1 : (a > b ? 1 : 0); | |
60 | } | |
61 | ||
9444b1f2 | 62 | Session* session_new(Manager *m, const char *id) { |
20263082 LP |
63 | Session *s; |
64 | ||
65 | assert(m); | |
66 | assert(id); | |
4b549144 | 67 | assert(session_id_valid(id)); |
20263082 | 68 | |
14c3baca | 69 | s = new0(Session, 1); |
20263082 LP |
70 | if (!s) |
71 | return NULL; | |
72 | ||
98a28fef | 73 | s->state_file = strappend("/run/systemd/sessions/", id); |
20263082 LP |
74 | if (!s->state_file) { |
75 | free(s); | |
76 | return NULL; | |
77 | } | |
78 | ||
831dedef | 79 | s->devices = hashmap_new(devt_hash_func, devt_compare_func); |
118ecf32 DH |
80 | if (!s->devices) { |
81 | free(s->state_file); | |
82 | free(s); | |
83 | return NULL; | |
84 | } | |
85 | ||
2b6bf07d | 86 | s->id = basename(s->state_file); |
20263082 LP |
87 | |
88 | if (hashmap_put(m->sessions, s->id, s) < 0) { | |
118ecf32 | 89 | hashmap_free(s->devices); |
f8e2fb7b | 90 | free(s->state_file); |
20263082 LP |
91 | free(s); |
92 | return NULL; | |
93 | } | |
94 | ||
95 | s->manager = m; | |
932e3ee7 | 96 | s->fifo_fd = -1; |
90a18413 | 97 | s->vtfd = -1; |
20263082 LP |
98 | |
99 | return s; | |
100 | } | |
101 | ||
102 | void session_free(Session *s) { | |
118ecf32 DH |
103 | SessionDevice *sd; |
104 | ||
20263082 LP |
105 | assert(s); |
106 | ||
14c3baca | 107 | if (s->in_gc_queue) |
71fda00f | 108 | LIST_REMOVE(gc_queue, s->manager->session_gc_queue, s); |
14c3baca | 109 | |
5f41d1f1 LP |
110 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
111 | ||
cc377381 LP |
112 | session_remove_fifo(s); |
113 | ||
ae5e06bd DH |
114 | session_drop_controller(s); |
115 | ||
118ecf32 DH |
116 | while ((sd = hashmap_first(s->devices))) |
117 | session_device_free(sd); | |
118 | ||
119 | hashmap_free(s->devices); | |
120 | ||
20263082 | 121 | if (s->user) { |
71fda00f | 122 | LIST_REMOVE(sessions_by_user, s->user->sessions, s); |
20263082 LP |
123 | |
124 | if (s->user->display == s) | |
125 | s->user->display = NULL; | |
126 | } | |
127 | ||
9418f147 LP |
128 | if (s->seat) { |
129 | if (s->seat->active == s) | |
130 | s->seat->active = NULL; | |
d7bd01b5 DH |
131 | if (s->seat->pending_switch == s) |
132 | s->seat->pending_switch = NULL; | |
9418f147 | 133 | |
49e6fdbf | 134 | seat_evict_position(s->seat, s); |
71fda00f | 135 | LIST_REMOVE(sessions_by_seat, s->seat->sessions, s); |
9418f147 | 136 | } |
20263082 | 137 | |
fb6becb4 LP |
138 | if (s->scope) { |
139 | hashmap_remove(s->manager->session_units, s->scope); | |
140 | free(s->scope); | |
141 | } | |
142 | ||
143 | free(s->scope_job); | |
1713813d | 144 | |
cc377381 | 145 | sd_bus_message_unref(s->create_message); |
20263082 LP |
146 | |
147 | free(s->tty); | |
148 | free(s->display); | |
149 | free(s->remote_host); | |
3f49d45a | 150 | free(s->remote_user); |
98a28fef | 151 | free(s->service); |
a4cd87e9 | 152 | free(s->desktop); |
20263082 LP |
153 | |
154 | hashmap_remove(s->manager->sessions, s->id); | |
98a28fef | 155 | |
5f41d1f1 LP |
156 | s->vt_source = sd_event_source_unref(s->vt_source); |
157 | ||
d2f92cdf | 158 | free(s->state_file); |
20263082 LP |
159 | free(s); |
160 | } | |
161 | ||
9444b1f2 LP |
162 | void session_set_user(Session *s, User *u) { |
163 | assert(s); | |
164 | assert(!s->user); | |
165 | ||
166 | s->user = u; | |
71fda00f | 167 | LIST_PREPEND(sessions_by_user, u->sessions, s); |
9444b1f2 LP |
168 | } |
169 | ||
20263082 | 170 | int session_save(Session *s) { |
507f22bd | 171 | _cleanup_free_ char *temp_path = NULL; |
cc377381 | 172 | _cleanup_fclose_ FILE *f = NULL; |
20263082 LP |
173 | int r = 0; |
174 | ||
175 | assert(s); | |
176 | ||
9444b1f2 LP |
177 | if (!s->user) |
178 | return -ESTALE; | |
179 | ||
accaeded LP |
180 | if (!s->started) |
181 | return 0; | |
182 | ||
d2e54fae | 183 | r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0); |
20263082 | 184 | if (r < 0) |
14c3baca | 185 | goto finish; |
20263082 | 186 | |
14c3baca LP |
187 | r = fopen_temporary(s->state_file, &f, &temp_path); |
188 | if (r < 0) | |
189 | goto finish; | |
20263082 LP |
190 | |
191 | assert(s->user); | |
192 | ||
14c3baca LP |
193 | fchmod(fileno(f), 0644); |
194 | ||
20263082 LP |
195 | fprintf(f, |
196 | "# This is private data. Do not parse.\n" | |
90b2de37 | 197 | "UID="UID_FMT"\n" |
20263082 LP |
198 | "USER=%s\n" |
199 | "ACTIVE=%i\n" | |
0604381b | 200 | "STATE=%s\n" |
fb6becb4 | 201 | "REMOTE=%i\n", |
90b2de37 | 202 | s->user->uid, |
20263082 LP |
203 | s->user->name, |
204 | session_is_active(s), | |
0604381b | 205 | session_state_to_string(session_get_state(s)), |
fb6becb4 | 206 | s->remote); |
20263082 | 207 | |
a91e4e53 | 208 | if (s->type >= 0) |
507f22bd | 209 | fprintf(f, "TYPE=%s\n", session_type_to_string(s->type)); |
a91e4e53 | 210 | |
55efac6c | 211 | if (s->class >= 0) |
507f22bd | 212 | fprintf(f, "CLASS=%s\n", session_class_to_string(s->class)); |
55efac6c | 213 | |
fb6becb4 LP |
214 | if (s->scope) |
215 | fprintf(f, "SCOPE=%s\n", s->scope); | |
216 | ||
217 | if (s->scope_job) | |
218 | fprintf(f, "SCOPE_JOB=%s\n", s->scope_job); | |
20263082 | 219 | |
932e3ee7 | 220 | if (s->fifo_path) |
507f22bd | 221 | fprintf(f, "FIFO=%s\n", s->fifo_path); |
932e3ee7 | 222 | |
20263082 | 223 | if (s->seat) |
507f22bd | 224 | fprintf(f, "SEAT=%s\n", s->seat->id); |
20263082 LP |
225 | |
226 | if (s->tty) | |
507f22bd | 227 | fprintf(f, "TTY=%s\n", s->tty); |
20263082 LP |
228 | |
229 | if (s->display) | |
507f22bd | 230 | fprintf(f, "DISPLAY=%s\n", s->display); |
20263082 LP |
231 | |
232 | if (s->remote_host) | |
507f22bd | 233 | fprintf(f, "REMOTE_HOST=%s\n", s->remote_host); |
20263082 | 234 | |
3f49d45a | 235 | if (s->remote_user) |
507f22bd | 236 | fprintf(f, "REMOTE_USER=%s\n", s->remote_user); |
3f49d45a | 237 | |
98a28fef | 238 | if (s->service) |
507f22bd | 239 | fprintf(f, "SERVICE=%s\n", s->service); |
98a28fef | 240 | |
a4cd87e9 LP |
241 | if (s->desktop) |
242 | fprintf(f, "DESKTOP=%s\n", s->desktop); | |
243 | ||
bf7825ae | 244 | if (s->seat && seat_has_vts(s->seat)) |
92bd5ff3 | 245 | fprintf(f, "VTNR=%u\n", s->vtnr); |
20263082 | 246 | |
49e6fdbf DH |
247 | if (!s->vtnr) |
248 | fprintf(f, "POS=%u\n", s->pos); | |
249 | ||
20263082 | 250 | if (s->leader > 0) |
90b2de37 | 251 | fprintf(f, "LEADER="PID_FMT"\n", s->leader); |
20263082 LP |
252 | |
253 | if (s->audit_id > 0) | |
507f22bd | 254 | fprintf(f, "AUDIT=%"PRIu32"\n", s->audit_id); |
20263082 | 255 | |
9444b1f2 LP |
256 | if (dual_timestamp_is_set(&s->timestamp)) |
257 | fprintf(f, | |
90b2de37 ZJS |
258 | "REALTIME="USEC_FMT"\n" |
259 | "MONOTONIC="USEC_FMT"\n", | |
260 | s->timestamp.realtime, | |
261 | s->timestamp.monotonic); | |
9444b1f2 | 262 | |
6d33772f DH |
263 | if (s->controller) |
264 | fprintf(f, "CONTROLLER=%s\n", s->controller); | |
265 | ||
20263082 | 266 | fflush(f); |
14c3baca LP |
267 | |
268 | if (ferror(f) || rename(temp_path, s->state_file) < 0) { | |
20263082 LP |
269 | r = -errno; |
270 | unlink(s->state_file); | |
14c3baca | 271 | unlink(temp_path); |
20263082 LP |
272 | } |
273 | ||
14c3baca LP |
274 | finish: |
275 | if (r < 0) | |
90b2de37 | 276 | log_error("Failed to save session data %s: %s", s->state_file, strerror(-r)); |
14c3baca | 277 | |
20263082 LP |
278 | return r; |
279 | } | |
280 | ||
281 | int session_load(Session *s) { | |
9444b1f2 | 282 | _cleanup_free_ char *remote = NULL, |
a185c5aa LP |
283 | *seat = NULL, |
284 | *vtnr = NULL, | |
49e6fdbf | 285 | *pos = NULL, |
a185c5aa | 286 | *leader = NULL, |
55efac6c | 287 | *type = NULL, |
9444b1f2 LP |
288 | *class = NULL, |
289 | *uid = NULL, | |
290 | *realtime = NULL, | |
6d33772f DH |
291 | *monotonic = NULL, |
292 | *controller = NULL; | |
a185c5aa LP |
293 | |
294 | int k, r; | |
295 | ||
20263082 LP |
296 | assert(s); |
297 | ||
a185c5aa LP |
298 | r = parse_env_file(s->state_file, NEWLINE, |
299 | "REMOTE", &remote, | |
fb6becb4 LP |
300 | "SCOPE", &s->scope, |
301 | "SCOPE_JOB", &s->scope_job, | |
932e3ee7 | 302 | "FIFO", &s->fifo_path, |
a185c5aa LP |
303 | "SEAT", &seat, |
304 | "TTY", &s->tty, | |
305 | "DISPLAY", &s->display, | |
306 | "REMOTE_HOST", &s->remote_host, | |
307 | "REMOTE_USER", &s->remote_user, | |
98a28fef | 308 | "SERVICE", &s->service, |
a4cd87e9 | 309 | "DESKTOP", &s->desktop, |
a185c5aa | 310 | "VTNR", &vtnr, |
49e6fdbf | 311 | "POS", &pos, |
a185c5aa | 312 | "LEADER", &leader, |
a91e4e53 | 313 | "TYPE", &type, |
55efac6c | 314 | "CLASS", &class, |
9444b1f2 LP |
315 | "UID", &uid, |
316 | "REALTIME", &realtime, | |
317 | "MONOTONIC", &monotonic, | |
6d33772f | 318 | "CONTROLLER", &controller, |
a185c5aa LP |
319 | NULL); |
320 | ||
9444b1f2 LP |
321 | if (r < 0) { |
322 | log_error("Failed to read %s: %s", s->state_file, strerror(-r)); | |
323 | return r; | |
324 | } | |
325 | ||
326 | if (!s->user) { | |
327 | uid_t u; | |
328 | User *user; | |
329 | ||
330 | if (!uid) { | |
331 | log_error("UID not specified for session %s", s->id); | |
332 | return -ENOENT; | |
333 | } | |
334 | ||
335 | r = parse_uid(uid, &u); | |
336 | if (r < 0) { | |
337 | log_error("Failed to parse UID value %s for session %s.", uid, s->id); | |
338 | return r; | |
339 | } | |
340 | ||
341 | user = hashmap_get(s->manager->users, ULONG_TO_PTR((unsigned long) u)); | |
342 | if (!user) { | |
343 | log_error("User of session %s not known.", s->id); | |
344 | return -ENOENT; | |
345 | } | |
346 | ||
347 | session_set_user(s, user); | |
348 | } | |
a185c5aa LP |
349 | |
350 | if (remote) { | |
351 | k = parse_boolean(remote); | |
352 | if (k >= 0) | |
353 | s->remote = k; | |
354 | } | |
355 | ||
c506027a DH |
356 | if (vtnr) |
357 | safe_atou(vtnr, &s->vtnr); | |
358 | ||
9418f147 | 359 | if (seat && !s->seat) { |
a185c5aa LP |
360 | Seat *o; |
361 | ||
362 | o = hashmap_get(s->manager->seats, seat); | |
363 | if (o) | |
c506027a DH |
364 | r = seat_attach_session(o, s); |
365 | if (!o || r < 0) | |
366 | log_error("Cannot attach session %s to seat %s", s->id, seat); | |
a185c5aa LP |
367 | } |
368 | ||
c506027a DH |
369 | if (!s->seat || !seat_has_vts(s->seat)) |
370 | s->vtnr = 0; | |
a185c5aa | 371 | |
49e6fdbf DH |
372 | if (pos && s->seat) { |
373 | unsigned int npos; | |
374 | ||
375 | safe_atou(pos, &npos); | |
376 | seat_claim_position(s->seat, s, npos); | |
377 | } | |
378 | ||
a185c5aa | 379 | if (leader) { |
f8e2fb7b LP |
380 | k = parse_pid(leader, &s->leader); |
381 | if (k >= 0) | |
382 | audit_session_from_pid(s->leader, &s->audit_id); | |
a185c5aa LP |
383 | } |
384 | ||
a91e4e53 LP |
385 | if (type) { |
386 | SessionType t; | |
387 | ||
388 | t = session_type_from_string(type); | |
389 | if (t >= 0) | |
390 | s->type = t; | |
391 | } | |
392 | ||
55efac6c LP |
393 | if (class) { |
394 | SessionClass c; | |
395 | ||
396 | c = session_class_from_string(class); | |
397 | if (c >= 0) | |
398 | s->class = c; | |
399 | } | |
400 | ||
b4f78aea LP |
401 | if (s->fifo_path) { |
402 | int fd; | |
403 | ||
404 | /* If we open an unopened pipe for reading we will not | |
405 | get an EOF. to trigger an EOF we hence open it for | |
406 | reading, but close it right-away which then will | |
407 | trigger the EOF. */ | |
408 | ||
409 | fd = session_create_fifo(s); | |
03e334a1 | 410 | safe_close(fd); |
b4f78aea LP |
411 | } |
412 | ||
9444b1f2 LP |
413 | if (realtime) { |
414 | unsigned long long l; | |
415 | if (sscanf(realtime, "%llu", &l) > 0) | |
416 | s->timestamp.realtime = l; | |
417 | } | |
418 | ||
419 | if (monotonic) { | |
420 | unsigned long long l; | |
421 | if (sscanf(monotonic, "%llu", &l) > 0) | |
422 | s->timestamp.monotonic = l; | |
423 | } | |
a185c5aa | 424 | |
6d33772f DH |
425 | if (controller) { |
426 | if (bus_name_has_owner(s->manager->bus, controller, NULL) > 0) | |
427 | session_set_controller(s, controller, false); | |
90a18413 DH |
428 | else |
429 | session_restore_vt(s); | |
6d33772f DH |
430 | } |
431 | ||
a185c5aa | 432 | return r; |
20263082 LP |
433 | } |
434 | ||
435 | int session_activate(Session *s) { | |
d7bd01b5 DH |
436 | unsigned int num_pending; |
437 | ||
20263082 | 438 | assert(s); |
9444b1f2 | 439 | assert(s->user); |
20263082 | 440 | |
20263082 LP |
441 | if (!s->seat) |
442 | return -ENOTSUP; | |
443 | ||
444 | if (s->seat->active == s) | |
445 | return 0; | |
446 | ||
d7bd01b5 DH |
447 | /* on seats with VTs, we let VTs manage session-switching */ |
448 | if (seat_has_vts(s->seat)) { | |
92bd5ff3 | 449 | if (!s->vtnr) |
d7bd01b5 DH |
450 | return -ENOTSUP; |
451 | ||
452 | return chvt(s->vtnr); | |
453 | } | |
454 | ||
455 | /* On seats without VTs, we implement session-switching in logind. We | |
456 | * try to pause all session-devices and wait until the session | |
457 | * controller acknowledged them. Once all devices are asleep, we simply | |
458 | * switch the active session and be done. | |
459 | * We save the session we want to switch to in seat->pending_switch and | |
460 | * seat_complete_switch() will perform the final switch. */ | |
461 | ||
462 | s->seat->pending_switch = s; | |
463 | ||
464 | /* if no devices are running, immediately perform the session switch */ | |
465 | num_pending = session_device_try_pause_all(s); | |
466 | if (!num_pending) | |
467 | seat_complete_switch(s->seat); | |
20263082 | 468 | |
d7bd01b5 | 469 | return 0; |
20263082 LP |
470 | } |
471 | ||
fb6becb4 | 472 | static int session_start_scope(Session *s) { |
98a28fef LP |
473 | int r; |
474 | ||
475 | assert(s); | |
9444b1f2 | 476 | assert(s->user); |
fb6becb4 | 477 | assert(s->user->slice); |
98a28fef | 478 | |
fb6becb4 | 479 | if (!s->scope) { |
cc377381 | 480 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
d0af76e6 | 481 | _cleanup_free_ char *description = NULL; |
39883f62 | 482 | char *scope, *job = NULL; |
d0af76e6 | 483 | |
405e0255 LP |
484 | description = strjoin("Session ", s->id, " of user ", s->user->name, NULL); |
485 | if (!description) | |
486 | return log_oom(); | |
487 | ||
d0af76e6 LP |
488 | scope = strjoin("session-", s->id, ".scope", NULL); |
489 | if (!scope) | |
ae018d9b LP |
490 | return log_oom(); |
491 | ||
646e392e | 492 | r = manager_start_scope(s->manager, scope, s->leader, s->user->slice, description, "systemd-logind.service", "systemd-user-sessions.service", &error, &job); |
d0af76e6 | 493 | if (r < 0) { |
042f5988 | 494 | log_error("Failed to start session scope %s: %s %s", |
cc377381 | 495 | scope, bus_error_message(&error, r), error.name); |
d0af76e6 | 496 | free(scope); |
f2d4f98d | 497 | return r; |
d0af76e6 LP |
498 | } else { |
499 | s->scope = scope; | |
500 | ||
501 | free(s->scope_job); | |
502 | s->scope_job = job; | |
503 | } | |
20263082 LP |
504 | } |
505 | ||
d0af76e6 LP |
506 | if (s->scope) |
507 | hashmap_put(s->manager->session_units, s->scope, s); | |
508 | ||
20263082 LP |
509 | return 0; |
510 | } | |
511 | ||
512 | int session_start(Session *s) { | |
513 | int r; | |
514 | ||
515 | assert(s); | |
9444b1f2 LP |
516 | |
517 | if (!s->user) | |
518 | return -ESTALE; | |
20263082 | 519 | |
9418f147 LP |
520 | if (s->started) |
521 | return 0; | |
522 | ||
ed18b08b LP |
523 | r = user_start(s->user); |
524 | if (r < 0) | |
525 | return r; | |
526 | ||
fb6becb4 LP |
527 | /* Create cgroup */ |
528 | r = session_start_scope(s); | |
529 | if (r < 0) | |
530 | return r; | |
531 | ||
d9eb81f9 | 532 | log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO, |
1ca6783f | 533 | MESSAGE_ID(SD_MESSAGE_SESSION_START), |
877d54e9 LP |
534 | "SESSION_ID=%s", s->id, |
535 | "USER_ID=%s", s->user->name, | |
536 | "LEADER=%lu", (unsigned long) s->leader, | |
537 | "MESSAGE=New session %s of user %s.", s->id, s->user->name, | |
538 | NULL); | |
98a28fef | 539 | |
9444b1f2 LP |
540 | if (!dual_timestamp_is_set(&s->timestamp)) |
541 | dual_timestamp_get(&s->timestamp); | |
14c3baca | 542 | |
e9816c48 LP |
543 | if (s->seat) |
544 | seat_read_active_vt(s->seat); | |
545 | ||
9418f147 LP |
546 | s->started = true; |
547 | ||
5f41d1f1 | 548 | /* Save data */ |
e9816c48 | 549 | session_save(s); |
7f7bb946 | 550 | user_save(s->user); |
5f41d1f1 LP |
551 | if (s->seat) |
552 | seat_save(s->seat); | |
e9816c48 | 553 | |
5f41d1f1 | 554 | /* Send signals */ |
da119395 | 555 | session_send_signal(s, true); |
5f41d1f1 | 556 | user_send_changed(s->user, "Sessions", NULL); |
9418f147 LP |
557 | if (s->seat) { |
558 | if (s->seat->active == s) | |
cc377381 | 559 | seat_send_changed(s->seat, "Sessions", "ActiveSession", NULL); |
9418f147 | 560 | else |
cc377381 | 561 | seat_send_changed(s->seat, "Sessions", NULL); |
9418f147 LP |
562 | } |
563 | ||
20263082 LP |
564 | return 0; |
565 | } | |
566 | ||
9bb69af4 | 567 | static int session_stop_scope(Session *s, bool force) { |
cc377381 | 568 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
39883f62 | 569 | char *job = NULL; |
20263082 | 570 | int r; |
20263082 LP |
571 | |
572 | assert(s); | |
573 | ||
fb6becb4 LP |
574 | if (!s->scope) |
575 | return 0; | |
9b221b63 | 576 | |
9bb69af4 | 577 | if (force || manager_shall_kill(s->manager, s->user->name)) { |
5f41d1f1 LP |
578 | r = manager_stop_unit(s->manager, s->scope, &error, &job); |
579 | if (r < 0) { | |
580 | log_error("Failed to stop session scope: %s", bus_error_message(&error, r)); | |
581 | return r; | |
582 | } | |
20263082 | 583 | |
5f41d1f1 LP |
584 | free(s->scope_job); |
585 | s->scope_job = job; | |
586 | } else { | |
587 | r = manager_abandon_scope(s->manager, s->scope, &error); | |
588 | if (r < 0) { | |
589 | log_error("Failed to abandon session scope: %s", bus_error_message(&error, r)); | |
590 | return r; | |
591 | } | |
592 | } | |
20263082 | 593 | |
9b221b63 | 594 | return 0; |
20263082 LP |
595 | } |
596 | ||
9bb69af4 | 597 | int session_stop(Session *s, bool force) { |
405e0255 LP |
598 | int r; |
599 | ||
600 | assert(s); | |
601 | ||
602 | if (!s->user) | |
603 | return -ESTALE; | |
604 | ||
5f41d1f1 LP |
605 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
606 | ||
607 | /* We are going down, don't care about FIFOs anymore */ | |
608 | session_remove_fifo(s); | |
609 | ||
405e0255 | 610 | /* Kill cgroup */ |
9bb69af4 | 611 | r = session_stop_scope(s, force); |
405e0255 | 612 | |
5f41d1f1 LP |
613 | s->stopping = true; |
614 | ||
405e0255 | 615 | session_save(s); |
cc377381 | 616 | user_save(s->user); |
405e0255 LP |
617 | |
618 | return r; | |
619 | } | |
620 | ||
621 | int session_finalize(Session *s) { | |
622 | int r = 0; | |
118ecf32 | 623 | SessionDevice *sd; |
20263082 LP |
624 | |
625 | assert(s); | |
626 | ||
9444b1f2 LP |
627 | if (!s->user) |
628 | return -ESTALE; | |
629 | ||
ed18b08b | 630 | if (s->started) |
d9eb81f9 | 631 | log_struct(s->class == SESSION_BACKGROUND ? LOG_DEBUG : LOG_INFO, |
1ca6783f | 632 | MESSAGE_ID(SD_MESSAGE_SESSION_STOP), |
877d54e9 LP |
633 | "SESSION_ID=%s", s->id, |
634 | "USER_ID=%s", s->user->name, | |
635 | "LEADER=%lu", (unsigned long) s->leader, | |
636 | "MESSAGE=Removed session %s.", s->id, | |
637 | NULL); | |
98a28fef | 638 | |
5f41d1f1 LP |
639 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
640 | ||
118ecf32 DH |
641 | /* Kill session devices */ |
642 | while ((sd = hashmap_first(s->devices))) | |
643 | session_device_free(sd); | |
644 | ||
d2f92cdf LP |
645 | unlink(s->state_file); |
646 | session_add_to_gc_queue(s); | |
ed18b08b | 647 | user_add_to_gc_queue(s->user); |
14c3baca | 648 | |
405e0255 | 649 | if (s->started) { |
ed18b08b | 650 | session_send_signal(s, false); |
405e0255 LP |
651 | s->started = false; |
652 | } | |
50fb9793 | 653 | |
9418f147 LP |
654 | if (s->seat) { |
655 | if (s->seat->active == s) | |
656 | seat_set_active(s->seat, NULL); | |
657 | ||
23bd3b62 | 658 | seat_save(s->seat); |
5f41d1f1 | 659 | seat_send_changed(s->seat, "Sessions", NULL); |
9418f147 LP |
660 | } |
661 | ||
23bd3b62 | 662 | user_save(s->user); |
5f41d1f1 | 663 | user_send_changed(s->user, "Sessions", NULL); |
9418f147 | 664 | |
20263082 LP |
665 | return r; |
666 | } | |
667 | ||
5f41d1f1 LP |
668 | static int release_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) { |
669 | Session *s = userdata; | |
670 | ||
671 | assert(es); | |
672 | assert(s); | |
673 | ||
9bb69af4 | 674 | session_stop(s, false); |
5f41d1f1 LP |
675 | return 0; |
676 | } | |
677 | ||
678 | void session_release(Session *s) { | |
679 | assert(s); | |
680 | ||
681 | if (!s->started || s->stopping) | |
682 | return; | |
683 | ||
684 | if (!s->timer_event_source) | |
6a0f1f6d LP |
685 | sd_event_add_time(s->manager->event, |
686 | &s->timer_event_source, | |
687 | CLOCK_MONOTONIC, | |
688 | now(CLOCK_MONOTONIC) + RELEASE_USEC, 0, | |
689 | release_timeout_callback, s); | |
5f41d1f1 LP |
690 | } |
691 | ||
20263082 LP |
692 | bool session_is_active(Session *s) { |
693 | assert(s); | |
694 | ||
695 | if (!s->seat) | |
696 | return true; | |
697 | ||
698 | return s->seat->active == s; | |
699 | } | |
700 | ||
23406ce5 LP |
701 | static int get_tty_atime(const char *tty, usec_t *atime) { |
702 | _cleanup_free_ char *p = NULL; | |
a185c5aa | 703 | struct stat st; |
23406ce5 LP |
704 | |
705 | assert(tty); | |
706 | assert(atime); | |
707 | ||
708 | if (!path_is_absolute(tty)) { | |
709 | p = strappend("/dev/", tty); | |
710 | if (!p) | |
711 | return -ENOMEM; | |
712 | ||
713 | tty = p; | |
714 | } else if (!path_startswith(tty, "/dev/")) | |
715 | return -ENOENT; | |
716 | ||
717 | if (lstat(tty, &st) < 0) | |
718 | return -errno; | |
719 | ||
720 | *atime = timespec_load(&st.st_atim); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static int get_process_ctty_atime(pid_t pid, usec_t *atime) { | |
725 | _cleanup_free_ char *p = NULL; | |
726 | int r; | |
727 | ||
728 | assert(pid > 0); | |
729 | assert(atime); | |
730 | ||
731 | r = get_ctty(pid, NULL, &p); | |
732 | if (r < 0) | |
733 | return r; | |
734 | ||
735 | return get_tty_atime(p, atime); | |
736 | } | |
737 | ||
738 | int session_get_idle_hint(Session *s, dual_timestamp *t) { | |
23406ce5 LP |
739 | usec_t atime = 0, n; |
740 | int r; | |
a185c5aa LP |
741 | |
742 | assert(s); | |
743 | ||
23406ce5 | 744 | /* Explicit idle hint is set */ |
a185c5aa LP |
745 | if (s->idle_hint) { |
746 | if (t) | |
747 | *t = s->idle_hint_timestamp; | |
748 | ||
749 | return s->idle_hint; | |
750 | } | |
751 | ||
0762eaa3 | 752 | /* Graphical sessions should really implement a real |
23406ce5 LP |
753 | * idle hint logic */ |
754 | if (s->display) | |
a185c5aa LP |
755 | goto dont_know; |
756 | ||
23406ce5 LP |
757 | /* For sessions with an explicitly configured tty, let's check |
758 | * its atime */ | |
759 | if (s->tty) { | |
760 | r = get_tty_atime(s->tty, &atime); | |
761 | if (r >= 0) | |
762 | goto found_atime; | |
763 | } | |
a185c5aa | 764 | |
23406ce5 LP |
765 | /* For sessions with a leader but no explicitly configured |
766 | * tty, let's check the controlling tty of the leader */ | |
767 | if (s->leader > 0) { | |
768 | r = get_process_ctty_atime(s->leader, &atime); | |
769 | if (r >= 0) | |
770 | goto found_atime; | |
a185c5aa LP |
771 | } |
772 | ||
a185c5aa LP |
773 | dont_know: |
774 | if (t) | |
775 | *t = s->idle_hint_timestamp; | |
776 | ||
777 | return 0; | |
23406ce5 LP |
778 | |
779 | found_atime: | |
780 | if (t) | |
781 | dual_timestamp_from_realtime(t, atime); | |
782 | ||
783 | n = now(CLOCK_REALTIME); | |
784 | ||
785 | if (s->manager->idle_action_usec <= 0) | |
786 | return 0; | |
787 | ||
788 | return atime + s->manager->idle_action_usec <= n; | |
a185c5aa LP |
789 | } |
790 | ||
bef422ae LP |
791 | void session_set_idle_hint(Session *s, bool b) { |
792 | assert(s); | |
793 | ||
794 | if (s->idle_hint == b) | |
795 | return; | |
796 | ||
797 | s->idle_hint = b; | |
798 | dual_timestamp_get(&s->idle_hint_timestamp); | |
9418f147 | 799 | |
cc377381 | 800 | session_send_changed(s, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL); |
9418f147 LP |
801 | |
802 | if (s->seat) | |
cc377381 LP |
803 | seat_send_changed(s->seat, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL); |
804 | ||
805 | user_send_changed(s->user, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL); | |
806 | manager_send_changed(s->manager, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL); | |
807 | } | |
808 | ||
809 | static int session_dispatch_fifo(sd_event_source *es, int fd, uint32_t revents, void *userdata) { | |
810 | Session *s = userdata; | |
811 | ||
812 | assert(s); | |
813 | assert(s->fifo_fd == fd); | |
814 | ||
815 | /* EOF on the FIFO means the session died abnormally. */ | |
816 | ||
817 | session_remove_fifo(s); | |
9bb69af4 | 818 | session_stop(s, false); |
cc377381 LP |
819 | |
820 | return 1; | |
bef422ae LP |
821 | } |
822 | ||
932e3ee7 LP |
823 | int session_create_fifo(Session *s) { |
824 | int r; | |
825 | ||
31b79c2b LP |
826 | assert(s); |
827 | ||
b4f78aea | 828 | /* Create FIFO */ |
932e3ee7 | 829 | if (!s->fifo_path) { |
d2e54fae | 830 | r = mkdir_safe_label("/run/systemd/sessions", 0755, 0, 0); |
e6061ab2 LP |
831 | if (r < 0) |
832 | return r; | |
833 | ||
932e3ee7 LP |
834 | if (asprintf(&s->fifo_path, "/run/systemd/sessions/%s.ref", s->id) < 0) |
835 | return -ENOMEM; | |
31b79c2b | 836 | |
932e3ee7 LP |
837 | if (mkfifo(s->fifo_path, 0600) < 0 && errno != EEXIST) |
838 | return -errno; | |
839 | } | |
31b79c2b | 840 | |
932e3ee7 | 841 | /* Open reading side */ |
b4f78aea | 842 | if (s->fifo_fd < 0) { |
b4f78aea LP |
843 | s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY); |
844 | if (s->fifo_fd < 0) | |
845 | return -errno; | |
846 | ||
cc377381 LP |
847 | } |
848 | ||
849 | if (!s->fifo_event_source) { | |
151b9b96 | 850 | r = sd_event_add_io(s->manager->event, &s->fifo_event_source, s->fifo_fd, 0, session_dispatch_fifo, s); |
b4f78aea LP |
851 | if (r < 0) |
852 | return r; | |
853 | ||
718db961 | 854 | r = sd_event_source_set_priority(s->fifo_event_source, SD_EVENT_PRIORITY_IDLE); |
cc377381 LP |
855 | if (r < 0) |
856 | return r; | |
b4f78aea | 857 | } |
932e3ee7 LP |
858 | |
859 | /* Open writing side */ | |
860 | r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY); | |
861 | if (r < 0) | |
862 | return -errno; | |
31b79c2b | 863 | |
932e3ee7 LP |
864 | return r; |
865 | } | |
866 | ||
5f41d1f1 | 867 | static void session_remove_fifo(Session *s) { |
932e3ee7 LP |
868 | assert(s); |
869 | ||
03e334a1 LP |
870 | s->fifo_event_source = sd_event_source_unref(s->fifo_event_source); |
871 | s->fifo_fd = safe_close(s->fifo_fd); | |
932e3ee7 LP |
872 | |
873 | if (s->fifo_path) { | |
874 | unlink(s->fifo_path); | |
875 | free(s->fifo_path); | |
876 | s->fifo_path = NULL; | |
877 | } | |
31b79c2b LP |
878 | } |
879 | ||
cc377381 | 880 | bool session_check_gc(Session *s, bool drop_not_started) { |
20263082 LP |
881 | assert(s); |
882 | ||
4a4b033f | 883 | if (drop_not_started && !s->started) |
cc377381 | 884 | return false; |
932e3ee7 | 885 | |
9444b1f2 | 886 | if (!s->user) |
cc377381 | 887 | return false; |
9444b1f2 | 888 | |
932e3ee7 | 889 | if (s->fifo_fd >= 0) { |
5f41d1f1 | 890 | if (pipe_eof(s->fifo_fd) <= 0) |
cc377381 | 891 | return true; |
20263082 LP |
892 | } |
893 | ||
cc377381 LP |
894 | if (s->scope_job && manager_job_is_active(s->manager, s->scope_job)) |
895 | return true; | |
20263082 | 896 | |
cc377381 LP |
897 | if (s->scope && manager_unit_is_active(s->manager, s->scope)) |
898 | return true; | |
20263082 | 899 | |
cc377381 | 900 | return false; |
20263082 LP |
901 | } |
902 | ||
14c3baca LP |
903 | void session_add_to_gc_queue(Session *s) { |
904 | assert(s); | |
905 | ||
906 | if (s->in_gc_queue) | |
907 | return; | |
908 | ||
71fda00f | 909 | LIST_PREPEND(gc_queue, s->manager->session_gc_queue, s); |
14c3baca LP |
910 | s->in_gc_queue = true; |
911 | } | |
912 | ||
0604381b LP |
913 | SessionState session_get_state(Session *s) { |
914 | assert(s); | |
915 | ||
8fe63cd4 | 916 | /* always check closing first */ |
5f41d1f1 LP |
917 | if (s->stopping || s->timer_event_source) |
918 | return SESSION_CLOSING; | |
919 | ||
8fe63cd4 | 920 | if (s->scope_job || s->fifo_fd < 0) |
405e0255 | 921 | return SESSION_OPENING; |
fb6becb4 | 922 | |
0604381b LP |
923 | if (session_is_active(s)) |
924 | return SESSION_ACTIVE; | |
925 | ||
926 | return SESSION_ONLINE; | |
927 | } | |
928 | ||
de07ab16 | 929 | int session_kill(Session *s, KillWho who, int signo) { |
de07ab16 LP |
930 | assert(s); |
931 | ||
fb6becb4 | 932 | if (!s->scope) |
de07ab16 LP |
933 | return -ESRCH; |
934 | ||
fb6becb4 | 935 | return manager_kill_unit(s->manager, s->scope, who, signo, NULL); |
de07ab16 LP |
936 | } |
937 | ||
90a18413 | 938 | static int session_open_vt(Session *s) { |
5f41d1f1 | 939 | char path[sizeof("/dev/tty") + DECIMAL_STR_MAX(s->vtnr)]; |
90a18413 | 940 | |
92bd5ff3 | 941 | if (!s->vtnr) |
90a18413 DH |
942 | return -1; |
943 | ||
944 | if (s->vtfd >= 0) | |
945 | return s->vtfd; | |
946 | ||
92bd5ff3 | 947 | sprintf(path, "/dev/tty%u", s->vtnr); |
90a18413 DH |
948 | s->vtfd = open(path, O_RDWR | O_CLOEXEC | O_NONBLOCK | O_NOCTTY); |
949 | if (s->vtfd < 0) { | |
950 | log_error("cannot open VT %s of session %s: %m", path, s->id); | |
03e334a1 | 951 | return -errno; |
90a18413 DH |
952 | } |
953 | ||
954 | return s->vtfd; | |
955 | } | |
956 | ||
957 | static int session_vt_fn(sd_event_source *source, const struct signalfd_siginfo *si, void *data) { | |
958 | Session *s = data; | |
959 | ||
960 | if (s->vtfd >= 0) | |
961 | ioctl(s->vtfd, VT_RELDISP, 1); | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
966 | void session_mute_vt(Session *s) { | |
967 | int vt, r; | |
968 | struct vt_mode mode = { 0 }; | |
969 | sigset_t mask; | |
970 | ||
971 | vt = session_open_vt(s); | |
972 | if (vt < 0) | |
973 | return; | |
974 | ||
975 | r = ioctl(vt, KDSKBMODE, K_OFF); | |
976 | if (r < 0) | |
977 | goto error; | |
978 | ||
979 | r = ioctl(vt, KDSETMODE, KD_GRAPHICS); | |
980 | if (r < 0) | |
981 | goto error; | |
982 | ||
983 | sigemptyset(&mask); | |
984 | sigaddset(&mask, SIGUSR1); | |
985 | sigprocmask(SIG_BLOCK, &mask, NULL); | |
986 | ||
151b9b96 | 987 | r = sd_event_add_signal(s->manager->event, &s->vt_source, SIGUSR1, session_vt_fn, s); |
90a18413 DH |
988 | if (r < 0) |
989 | goto error; | |
990 | ||
991 | /* Oh, thanks to the VT layer, VT_AUTO does not work with KD_GRAPHICS. | |
992 | * So we need a dummy handler here which just acknowledges *all* VT | |
993 | * switch requests. */ | |
994 | mode.mode = VT_PROCESS; | |
995 | mode.relsig = SIGUSR1; | |
996 | mode.acqsig = SIGUSR1; | |
997 | r = ioctl(vt, VT_SETMODE, &mode); | |
998 | if (r < 0) | |
999 | goto error; | |
1000 | ||
1001 | return; | |
1002 | ||
1003 | error: | |
92bd5ff3 | 1004 | log_error("cannot mute VT %u for session %s (%d/%d)", s->vtnr, s->id, r, errno); |
90a18413 DH |
1005 | session_restore_vt(s); |
1006 | } | |
1007 | ||
1008 | void session_restore_vt(Session *s) { | |
a0eb2a75 | 1009 | _cleanup_free_ char *utf8 = NULL; |
90a18413 DH |
1010 | int vt, kb = K_XLATE; |
1011 | struct vt_mode mode = { 0 }; | |
1012 | ||
1013 | vt = session_open_vt(s); | |
1014 | if (vt < 0) | |
1015 | return; | |
1016 | ||
5f41d1f1 | 1017 | s->vt_source = sd_event_source_unref(s->vt_source); |
90a18413 DH |
1018 | |
1019 | ioctl(vt, KDSETMODE, KD_TEXT); | |
1020 | ||
1021 | if (read_one_line_file("/sys/module/vt/parameters/default_utf8", &utf8) >= 0 && *utf8 == '1') | |
1022 | kb = K_UNICODE; | |
03e334a1 | 1023 | |
90a18413 DH |
1024 | ioctl(vt, KDSKBMODE, kb); |
1025 | ||
1026 | mode.mode = VT_AUTO; | |
1027 | ioctl(vt, VT_SETMODE, &mode); | |
1028 | ||
03e334a1 | 1029 | s->vtfd = safe_close(s->vtfd); |
90a18413 DH |
1030 | } |
1031 | ||
cc377381 | 1032 | bool session_is_controller(Session *s, const char *sender) { |
ae5e06bd DH |
1033 | assert(s); |
1034 | ||
1035 | return streq_ptr(s->controller, sender); | |
1036 | } | |
1037 | ||
6d33772f DH |
1038 | static void session_swap_controller(Session *s, char *name) { |
1039 | SessionDevice *sd; | |
1040 | ||
1041 | if (s->controller) { | |
1042 | manager_drop_busname(s->manager, s->controller); | |
1043 | free(s->controller); | |
1044 | s->controller = NULL; | |
1045 | ||
1046 | /* Drop all devices as they're now unused. Do that after the | |
1047 | * controller is released to avoid sending out useles | |
1048 | * dbus signals. */ | |
1049 | while ((sd = hashmap_first(s->devices))) | |
1050 | session_device_free(sd); | |
90a18413 DH |
1051 | |
1052 | if (!name) | |
1053 | session_restore_vt(s); | |
6d33772f DH |
1054 | } |
1055 | ||
1056 | s->controller = name; | |
1057 | session_save(s); | |
1058 | } | |
1059 | ||
ae5e06bd DH |
1060 | int session_set_controller(Session *s, const char *sender, bool force) { |
1061 | char *t; | |
1062 | int r; | |
1063 | ||
1064 | assert(s); | |
1065 | assert(sender); | |
1066 | ||
1067 | if (session_is_controller(s, sender)) | |
1068 | return 0; | |
1069 | if (s->controller && !force) | |
1070 | return -EBUSY; | |
1071 | ||
1072 | t = strdup(sender); | |
1073 | if (!t) | |
1074 | return -ENOMEM; | |
1075 | ||
1076 | r = manager_watch_busname(s->manager, sender); | |
1077 | if (r) { | |
1078 | free(t); | |
1079 | return r; | |
1080 | } | |
1081 | ||
6d33772f | 1082 | session_swap_controller(s, t); |
ae5e06bd | 1083 | |
90a18413 DH |
1084 | /* When setting a session controller, we forcibly mute the VT and set |
1085 | * it into graphics-mode. Applications can override that by changing | |
1086 | * VT state after calling TakeControl(). However, this serves as a good | |
1087 | * default and well-behaving controllers can now ignore VTs entirely. | |
1088 | * Note that we reset the VT on ReleaseControl() and if the controller | |
1089 | * exits. | |
1090 | * If logind crashes/restarts, we restore the controller during restart | |
1091 | * or reset the VT in case it crashed/exited, too. */ | |
1092 | session_mute_vt(s); | |
1093 | ||
ae5e06bd DH |
1094 | return 0; |
1095 | } | |
1096 | ||
1097 | void session_drop_controller(Session *s) { | |
1098 | assert(s); | |
1099 | ||
1100 | if (!s->controller) | |
1101 | return; | |
1102 | ||
6d33772f | 1103 | session_swap_controller(s, NULL); |
ae5e06bd DH |
1104 | } |
1105 | ||
fb6becb4 LP |
1106 | static const char* const session_state_table[_SESSION_STATE_MAX] = { |
1107 | [SESSION_OPENING] = "opening", | |
0604381b LP |
1108 | [SESSION_ONLINE] = "online", |
1109 | [SESSION_ACTIVE] = "active", | |
1110 | [SESSION_CLOSING] = "closing" | |
1111 | }; | |
1112 | ||
1113 | DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState); | |
1114 | ||
20263082 | 1115 | static const char* const session_type_table[_SESSION_TYPE_MAX] = { |
2c5859af | 1116 | [SESSION_UNSPECIFIED] = "unspecified", |
3f49d45a | 1117 | [SESSION_TTY] = "tty", |
98a28fef | 1118 | [SESSION_X11] = "x11", |
d9eb81f9 | 1119 | [SESSION_WAYLAND] = "wayland", |
20263082 LP |
1120 | }; |
1121 | ||
1122 | DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType); | |
de07ab16 | 1123 | |
55efac6c LP |
1124 | static const char* const session_class_table[_SESSION_CLASS_MAX] = { |
1125 | [SESSION_USER] = "user", | |
1126 | [SESSION_GREETER] = "greeter", | |
e2acb67b LP |
1127 | [SESSION_LOCK_SCREEN] = "lock-screen", |
1128 | [SESSION_BACKGROUND] = "background" | |
55efac6c LP |
1129 | }; |
1130 | ||
1131 | DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass); | |
1132 | ||
de07ab16 LP |
1133 | static const char* const kill_who_table[_KILL_WHO_MAX] = { |
1134 | [KILL_LEADER] = "leader", | |
1135 | [KILL_ALL] = "all" | |
1136 | }; | |
1137 | ||
1138 | DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho); |