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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 | ||
1c231f56 | 22 | #include <sys/mount.h> |
20263082 LP |
23 | #include <string.h> |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
26 | ||
20263082 | 27 | #include "util.h" |
49e942b2 | 28 | #include "mkdir.h" |
c6878637 | 29 | #include "rm-rf.h" |
20263082 | 30 | #include "hashmap.h" |
a5c32cff | 31 | #include "fileio.h" |
1c231f56 | 32 | #include "path-util.h" |
9444b1f2 | 33 | #include "special.h" |
fb6becb4 | 34 | #include "unit-name.h" |
cc377381 LP |
35 | #include "bus-util.h" |
36 | #include "bus-error.h" | |
1c231f56 | 37 | #include "conf-parser.h" |
66cdd0f2 | 38 | #include "clean-ipc.h" |
374738d5 | 39 | #include "smack-util.h" |
6482f626 | 40 | #include "formats-util.h" |
9e281beb LP |
41 | #include "label.h" |
42 | #include "logind-user.h" | |
20263082 LP |
43 | |
44 | User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) { | |
45 | User *u; | |
46 | ||
47 | assert(m); | |
48 | assert(name); | |
49 | ||
14c3baca | 50 | u = new0(User, 1); |
20263082 LP |
51 | if (!u) |
52 | return NULL; | |
53 | ||
54 | u->name = strdup(name); | |
9444b1f2 LP |
55 | if (!u->name) |
56 | goto fail; | |
20263082 | 57 | |
de0671ee | 58 | if (asprintf(&u->state_file, "/run/systemd/users/"UID_FMT, uid) < 0) |
9444b1f2 | 59 | goto fail; |
20263082 | 60 | |
8cb4ab00 | 61 | if (hashmap_put(m->users, UID_TO_PTR(uid), u) < 0) |
9444b1f2 | 62 | goto fail; |
20263082 LP |
63 | |
64 | u->manager = m; | |
65 | u->uid = uid; | |
66 | u->gid = gid; | |
67 | ||
68 | return u; | |
9444b1f2 LP |
69 | |
70 | fail: | |
71 | free(u->state_file); | |
72 | free(u->name); | |
73 | free(u); | |
74 | ||
75 | return NULL; | |
20263082 LP |
76 | } |
77 | ||
78 | void user_free(User *u) { | |
79 | assert(u); | |
80 | ||
14c3baca | 81 | if (u->in_gc_queue) |
71fda00f | 82 | LIST_REMOVE(gc_queue, u->manager->user_gc_queue, u); |
14c3baca | 83 | |
20263082 LP |
84 | while (u->sessions) |
85 | session_free(u->sessions); | |
86 | ||
fb6becb4 LP |
87 | if (u->slice) { |
88 | hashmap_remove(u->manager->user_units, u->slice); | |
89 | free(u->slice); | |
9444b1f2 | 90 | } |
20263082 | 91 | |
fb6becb4 LP |
92 | if (u->service) { |
93 | hashmap_remove(u->manager->user_units, u->service); | |
94 | free(u->service); | |
95 | } | |
96 | ||
97 | free(u->slice_job); | |
98 | free(u->service_job); | |
99 | ||
20263082 LP |
100 | free(u->runtime_path); |
101 | ||
8cb4ab00 | 102 | hashmap_remove(u->manager->users, UID_TO_PTR(u->uid)); |
20263082 LP |
103 | |
104 | free(u->name); | |
d2f92cdf | 105 | free(u->state_file); |
20263082 LP |
106 | free(u); |
107 | } | |
108 | ||
109 | int user_save(User *u) { | |
9444b1f2 LP |
110 | _cleanup_free_ char *temp_path = NULL; |
111 | _cleanup_fclose_ FILE *f = NULL; | |
20263082 LP |
112 | int r; |
113 | ||
114 | assert(u); | |
115 | assert(u->state_file); | |
116 | ||
accaeded LP |
117 | if (!u->started) |
118 | return 0; | |
119 | ||
d2e54fae | 120 | r = mkdir_safe_label("/run/systemd/users", 0755, 0, 0); |
20263082 | 121 | if (r < 0) |
14c3baca | 122 | goto finish; |
20263082 | 123 | |
14c3baca LP |
124 | r = fopen_temporary(u->state_file, &f, &temp_path); |
125 | if (r < 0) | |
126 | goto finish; | |
127 | ||
128 | fchmod(fileno(f), 0644); | |
20263082 LP |
129 | |
130 | fprintf(f, | |
14c3baca | 131 | "# This is private data. Do not parse.\n" |
20263082 LP |
132 | "NAME=%s\n" |
133 | "STATE=%s\n", | |
134 | u->name, | |
135 | user_state_to_string(user_get_state(u))); | |
136 | ||
20263082 | 137 | if (u->runtime_path) |
9444b1f2 | 138 | fprintf(f, "RUNTIME=%s\n", u->runtime_path); |
20263082 LP |
139 | |
140 | if (u->service) | |
9444b1f2 | 141 | fprintf(f, "SERVICE=%s\n", u->service); |
fb6becb4 LP |
142 | if (u->service_job) |
143 | fprintf(f, "SERVICE_JOB=%s\n", u->service_job); | |
9444b1f2 LP |
144 | |
145 | if (u->slice) | |
146 | fprintf(f, "SLICE=%s\n", u->slice); | |
fb6becb4 LP |
147 | if (u->slice_job) |
148 | fprintf(f, "SLICE_JOB=%s\n", u->slice_job); | |
20263082 LP |
149 | |
150 | if (u->display) | |
9444b1f2 LP |
151 | fprintf(f, "DISPLAY=%s\n", u->display->id); |
152 | ||
153 | if (dual_timestamp_is_set(&u->timestamp)) | |
20263082 | 154 | fprintf(f, |
90b2de37 ZJS |
155 | "REALTIME="USEC_FMT"\n" |
156 | "MONOTONIC="USEC_FMT"\n", | |
157 | u->timestamp.realtime, | |
158 | u->timestamp.monotonic); | |
20263082 | 159 | |
034a2a52 LP |
160 | if (u->sessions) { |
161 | Session *i; | |
9b958eff | 162 | bool first; |
034a2a52 LP |
163 | |
164 | fputs("SESSIONS=", f); | |
9b958eff | 165 | first = true; |
034a2a52 | 166 | LIST_FOREACH(sessions_by_user, i, u->sessions) { |
9b958eff LP |
167 | if (first) |
168 | first = false; | |
169 | else | |
170 | fputc(' ', f); | |
171 | ||
172 | fputs(i->id, f); | |
034a2a52 LP |
173 | } |
174 | ||
9b958eff LP |
175 | fputs("\nSEATS=", f); |
176 | first = true; | |
034a2a52 | 177 | LIST_FOREACH(sessions_by_user, i, u->sessions) { |
9b958eff LP |
178 | if (!i->seat) |
179 | continue; | |
180 | ||
181 | if (first) | |
182 | first = false; | |
183 | else | |
184 | fputc(' ', f); | |
185 | ||
186 | fputs(i->seat->id, f); | |
034a2a52 LP |
187 | } |
188 | ||
9b958eff LP |
189 | fputs("\nACTIVE_SESSIONS=", f); |
190 | first = true; | |
191 | LIST_FOREACH(sessions_by_user, i, u->sessions) { | |
192 | if (!session_is_active(i)) | |
193 | continue; | |
194 | ||
195 | if (first) | |
196 | first = false; | |
197 | else | |
198 | fputc(' ', f); | |
199 | ||
200 | fputs(i->id, f); | |
201 | } | |
034a2a52 | 202 | |
2dc8f41a CG |
203 | fputs("\nONLINE_SESSIONS=", f); |
204 | first = true; | |
205 | LIST_FOREACH(sessions_by_user, i, u->sessions) { | |
206 | if (session_get_state(i) == SESSION_CLOSING) | |
207 | continue; | |
208 | ||
209 | if (first) | |
210 | first = false; | |
211 | else | |
212 | fputc(' ', f); | |
213 | ||
214 | fputs(i->id, f); | |
215 | } | |
216 | ||
9b958eff LP |
217 | fputs("\nACTIVE_SEATS=", f); |
218 | first = true; | |
034a2a52 | 219 | LIST_FOREACH(sessions_by_user, i, u->sessions) { |
9b958eff LP |
220 | if (!session_is_active(i) || !i->seat) |
221 | continue; | |
222 | ||
223 | if (first) | |
224 | first = false; | |
225 | else | |
47acb2f1 CG |
226 | fputc(' ', f); |
227 | ||
228 | fputs(i->seat->id, f); | |
034a2a52 | 229 | } |
2dc8f41a CG |
230 | |
231 | fputs("\nONLINE_SEATS=", f); | |
232 | first = true; | |
233 | LIST_FOREACH(sessions_by_user, i, u->sessions) { | |
234 | if (session_get_state(i) == SESSION_CLOSING || !i->seat) | |
235 | continue; | |
236 | ||
237 | if (first) | |
238 | first = false; | |
239 | else | |
240 | fputc(' ', f); | |
241 | ||
242 | fputs(i->seat->id, f); | |
243 | } | |
9b958eff | 244 | fputc('\n', f); |
034a2a52 LP |
245 | } |
246 | ||
20263082 | 247 | fflush(f); |
14c3baca LP |
248 | |
249 | if (ferror(f) || rename(temp_path, u->state_file) < 0) { | |
20263082 LP |
250 | r = -errno; |
251 | unlink(u->state_file); | |
14c3baca | 252 | unlink(temp_path); |
20263082 LP |
253 | } |
254 | ||
14c3baca LP |
255 | finish: |
256 | if (r < 0) | |
da927ba9 | 257 | log_error_errno(r, "Failed to save user data %s: %m", u->state_file); |
14c3baca | 258 | |
20263082 LP |
259 | return r; |
260 | } | |
261 | ||
262 | int user_load(User *u) { | |
9444b1f2 | 263 | _cleanup_free_ char *display = NULL, *realtime = NULL, *monotonic = NULL; |
98a28fef | 264 | Session *s = NULL; |
9444b1f2 | 265 | int r; |
20263082 LP |
266 | |
267 | assert(u); | |
268 | ||
a185c5aa | 269 | r = parse_env_file(u->state_file, NEWLINE, |
fb6becb4 LP |
270 | "RUNTIME", &u->runtime_path, |
271 | "SERVICE", &u->service, | |
272 | "SERVICE_JOB", &u->service_job, | |
273 | "SLICE", &u->slice, | |
274 | "SLICE_JOB", &u->slice_job, | |
275 | "DISPLAY", &display, | |
276 | "REALTIME", &realtime, | |
277 | "MONOTONIC", &monotonic, | |
20263082 LP |
278 | NULL); |
279 | if (r < 0) { | |
20263082 LP |
280 | if (r == -ENOENT) |
281 | return 0; | |
282 | ||
da927ba9 | 283 | log_error_errno(r, "Failed to read %s: %m", u->state_file); |
20263082 LP |
284 | return r; |
285 | } | |
286 | ||
9444b1f2 | 287 | if (display) |
98a28fef | 288 | s = hashmap_get(u->manager->sessions, display); |
20263082 | 289 | |
4d6d6518 | 290 | if (s && s->display && display_is_local(s->display)) |
20263082 LP |
291 | u->display = s; |
292 | ||
9444b1f2 LP |
293 | if (realtime) { |
294 | unsigned long long l; | |
295 | if (sscanf(realtime, "%llu", &l) > 0) | |
296 | u->timestamp.realtime = l; | |
297 | } | |
298 | ||
299 | if (monotonic) { | |
300 | unsigned long long l; | |
301 | if (sscanf(monotonic, "%llu", &l) > 0) | |
302 | u->timestamp.monotonic = l; | |
303 | } | |
304 | ||
20263082 LP |
305 | return r; |
306 | } | |
307 | ||
308 | static int user_mkdir_runtime_path(User *u) { | |
309 | char *p; | |
310 | int r; | |
311 | ||
312 | assert(u); | |
313 | ||
d2e54fae | 314 | r = mkdir_safe_label("/run/user", 0755, 0, 0); |
f647962d MS |
315 | if (r < 0) |
316 | return log_error_errno(r, "Failed to create /run/user: %m"); | |
20263082 LP |
317 | |
318 | if (!u->runtime_path) { | |
1c231f56 | 319 | if (asprintf(&p, "/run/user/" UID_FMT, u->uid) < 0) |
0d0f0c50 | 320 | return log_oom(); |
20263082 LP |
321 | } else |
322 | p = u->runtime_path; | |
323 | ||
e26d6ce5 | 324 | if (path_is_mount_point(p, 0) <= 0) { |
1c231f56 LP |
325 | _cleanup_free_ char *t = NULL; |
326 | ||
9e281beb | 327 | (void) mkdir_label(p, 0700); |
1c231f56 | 328 | |
6baa7db0 | 329 | if (mac_smack_use()) |
374738d5 LS |
330 | r = asprintf(&t, "mode=0700,smackfsroot=*,uid=" UID_FMT ",gid=" GID_FMT ",size=%zu", u->uid, u->gid, u->manager->runtime_dir_size); |
331 | else | |
332 | r = asprintf(&t, "mode=0700,uid=" UID_FMT ",gid=" GID_FMT ",size=%zu", u->uid, u->gid, u->manager->runtime_dir_size); | |
374738d5 | 333 | if (r < 0) { |
1c231f56 LP |
334 | r = log_oom(); |
335 | goto fail; | |
336 | } | |
337 | ||
338 | r = mount("tmpfs", p, "tmpfs", MS_NODEV|MS_NOSUID, t); | |
339 | if (r < 0) { | |
11c6476a CS |
340 | if (errno != EPERM) { |
341 | r = log_error_errno(errno, "Failed to mount per-user tmpfs directory %s: %m", p); | |
342 | goto fail; | |
343 | } | |
344 | ||
345 | /* Lacking permissions, maybe | |
346 | * CAP_SYS_ADMIN-less container? In this case, | |
347 | * just use a normal directory. */ | |
348 | ||
349 | r = chmod_and_chown(p, 0700, u->uid, u->gid); | |
350 | if (r < 0) { | |
351 | log_error_errno(r, "Failed to change runtime directory ownership and mode: %m"); | |
352 | goto fail; | |
353 | } | |
1c231f56 | 354 | } |
9e281beb LP |
355 | |
356 | r = label_fix(p, false, false); | |
357 | if (r < 0) | |
358 | log_warning_errno(r, "Failed to fix label of '%s', ignoring: %m", p); | |
20263082 LP |
359 | } |
360 | ||
361 | u->runtime_path = p; | |
362 | return 0; | |
1c231f56 LP |
363 | |
364 | fail: | |
4d858e7d CS |
365 | if (p) { |
366 | /* Try to clean up, but ignore errors */ | |
367 | (void) rmdir(p); | |
368 | free(p); | |
369 | } | |
370 | ||
1c231f56 LP |
371 | u->runtime_path = NULL; |
372 | return r; | |
20263082 LP |
373 | } |
374 | ||
fb6becb4 | 375 | static int user_start_slice(User *u) { |
fb6becb4 | 376 | char *job; |
20263082 LP |
377 | int r; |
378 | ||
379 | assert(u); | |
380 | ||
fb6becb4 | 381 | if (!u->slice) { |
cc377381 | 382 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
de0671ee ZJS |
383 | char lu[DECIMAL_STR_MAX(uid_t) + 1], *slice; |
384 | sprintf(lu, UID_FMT, u->uid); | |
ae018d9b | 385 | |
7410616c | 386 | r = slice_build_subslice(SPECIAL_USER_SLICE, lu, &slice); |
9444b1f2 LP |
387 | if (r < 0) |
388 | return r; | |
389 | ||
d0af76e6 LP |
390 | r = manager_start_unit(u->manager, slice, &error, &job); |
391 | if (r < 0) { | |
cc377381 | 392 | log_error("Failed to start user slice: %s", bus_error_message(&error, r)); |
d0af76e6 LP |
393 | free(slice); |
394 | } else { | |
395 | u->slice = slice; | |
396 | ||
397 | free(u->slice_job); | |
398 | u->slice_job = job; | |
399 | } | |
20263082 LP |
400 | } |
401 | ||
d0af76e6 LP |
402 | if (u->slice) |
403 | hashmap_put(u->manager->user_units, u->slice, u); | |
404 | ||
20263082 LP |
405 | return 0; |
406 | } | |
407 | ||
408 | static int user_start_service(User *u) { | |
cc377381 | 409 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
fb6becb4 LP |
410 | char *job; |
411 | int r; | |
412 | ||
20263082 LP |
413 | assert(u); |
414 | ||
fb6becb4 | 415 | if (!u->service) { |
de0671ee ZJS |
416 | char lu[DECIMAL_STR_MAX(uid_t) + 1], *service; |
417 | sprintf(lu, UID_FMT, u->uid); | |
fb6becb4 | 418 | |
7410616c LP |
419 | r = unit_name_build("user", lu, ".service", &service); |
420 | if (r < 0) | |
421 | return log_error_errno(r, "Failed to build service name: %m"); | |
fb6becb4 | 422 | |
d0af76e6 LP |
423 | r = manager_start_unit(u->manager, service, &error, &job); |
424 | if (r < 0) { | |
cc377381 | 425 | log_error("Failed to start user service: %s", bus_error_message(&error, r)); |
d0af76e6 LP |
426 | free(service); |
427 | } else { | |
428 | u->service = service; | |
429 | ||
430 | free(u->service_job); | |
431 | u->service_job = job; | |
432 | } | |
fb6becb4 LP |
433 | } |
434 | ||
d0af76e6 LP |
435 | if (u->service) |
436 | hashmap_put(u->manager->user_units, u->service, u); | |
437 | ||
20263082 LP |
438 | return 0; |
439 | } | |
440 | ||
441 | int user_start(User *u) { | |
442 | int r; | |
443 | ||
444 | assert(u); | |
445 | ||
9418f147 LP |
446 | if (u->started) |
447 | return 0; | |
448 | ||
1637a8be | 449 | log_debug("New user %s logged in.", u->name); |
ed18b08b | 450 | |
20263082 LP |
451 | /* Make XDG_RUNTIME_DIR */ |
452 | r = user_mkdir_runtime_path(u); | |
453 | if (r < 0) | |
454 | return r; | |
455 | ||
456 | /* Create cgroup */ | |
fb6becb4 | 457 | r = user_start_slice(u); |
20263082 LP |
458 | if (r < 0) |
459 | return r; | |
460 | ||
461 | /* Spawn user systemd */ | |
462 | r = user_start_service(u); | |
463 | if (r < 0) | |
464 | return r; | |
465 | ||
9444b1f2 LP |
466 | if (!dual_timestamp_is_set(&u->timestamp)) |
467 | dual_timestamp_get(&u->timestamp); | |
20263082 | 468 | |
9418f147 LP |
469 | u->started = true; |
470 | ||
7f7bb946 LP |
471 | /* Save new user data */ |
472 | user_save(u); | |
473 | ||
da119395 LP |
474 | user_send_signal(u, true); |
475 | ||
20263082 LP |
476 | return 0; |
477 | } | |
478 | ||
fb6becb4 | 479 | static int user_stop_slice(User *u) { |
cc377381 | 480 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
fb6becb4 LP |
481 | char *job; |
482 | int r; | |
20263082 | 483 | |
20263082 LP |
484 | assert(u); |
485 | ||
fb6becb4 LP |
486 | if (!u->slice) |
487 | return 0; | |
488 | ||
489 | r = manager_stop_unit(u->manager, u->slice, &error, &job); | |
490 | if (r < 0) { | |
cc377381 | 491 | log_error("Failed to stop user slice: %s", bus_error_message(&error, r)); |
fb6becb4 LP |
492 | return r; |
493 | } | |
ed18b08b | 494 | |
fb6becb4 LP |
495 | free(u->slice_job); |
496 | u->slice_job = job; | |
ed18b08b | 497 | |
fb6becb4 | 498 | return r; |
20263082 LP |
499 | } |
500 | ||
fb6becb4 | 501 | static int user_stop_service(User *u) { |
cc377381 | 502 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
fb6becb4 | 503 | char *job; |
20263082 | 504 | int r; |
20263082 LP |
505 | |
506 | assert(u); | |
507 | ||
fb6becb4 | 508 | if (!u->service) |
20263082 LP |
509 | return 0; |
510 | ||
fb6becb4 LP |
511 | r = manager_stop_unit(u->manager, u->service, &error, &job); |
512 | if (r < 0) { | |
cc377381 | 513 | log_error("Failed to stop user service: %s", bus_error_message(&error, r)); |
fb6becb4 LP |
514 | return r; |
515 | } | |
20263082 | 516 | |
fb6becb4 LP |
517 | free(u->service_job); |
518 | u->service_job = job; | |
20263082 | 519 | |
fb6becb4 LP |
520 | return r; |
521 | } | |
20263082 | 522 | |
20263082 LP |
523 | static int user_remove_runtime_path(User *u) { |
524 | int r; | |
525 | ||
526 | assert(u); | |
527 | ||
528 | if (!u->runtime_path) | |
529 | return 0; | |
530 | ||
c6878637 | 531 | r = rm_rf(u->runtime_path, 0); |
1c231f56 | 532 | if (r < 0) |
da927ba9 | 533 | log_error_errno(r, "Failed to remove runtime directory %s: %m", u->runtime_path); |
1c231f56 | 534 | |
11c6476a CS |
535 | /* Ignore cases where the directory isn't mounted, as that's |
536 | * quite possible, if we lacked the permissions to mount | |
537 | * something */ | |
538 | r = umount2(u->runtime_path, MNT_DETACH); | |
539 | if (r < 0 && errno != EINVAL && errno != ENOENT) | |
56f64d95 | 540 | log_error_errno(errno, "Failed to unmount user runtime directory %s: %m", u->runtime_path); |
1c231f56 | 541 | |
c6878637 | 542 | r = rm_rf(u->runtime_path, REMOVE_ROOT); |
20263082 | 543 | if (r < 0) |
da927ba9 | 544 | log_error_errno(r, "Failed to remove runtime directory %s: %m", u->runtime_path); |
20263082 LP |
545 | |
546 | free(u->runtime_path); | |
547 | u->runtime_path = NULL; | |
548 | ||
549 | return r; | |
550 | } | |
551 | ||
9bb69af4 | 552 | int user_stop(User *u, bool force) { |
20263082 LP |
553 | Session *s; |
554 | int r = 0, k; | |
555 | assert(u); | |
556 | ||
b58b227a DH |
557 | /* Stop jobs have already been queued */ |
558 | if (u->stopping) { | |
559 | user_save(u); | |
560 | return r; | |
561 | } | |
562 | ||
20263082 | 563 | LIST_FOREACH(sessions_by_user, s, u->sessions) { |
9bb69af4 | 564 | k = session_stop(s, force); |
20263082 LP |
565 | if (k < 0) |
566 | r = k; | |
567 | } | |
568 | ||
569 | /* Kill systemd */ | |
570 | k = user_stop_service(u); | |
571 | if (k < 0) | |
572 | r = k; | |
573 | ||
574 | /* Kill cgroup */ | |
fb6becb4 | 575 | k = user_stop_slice(u); |
20263082 LP |
576 | if (k < 0) |
577 | r = k; | |
578 | ||
5f41d1f1 LP |
579 | u->stopping = true; |
580 | ||
405e0255 LP |
581 | user_save(u); |
582 | ||
583 | return r; | |
584 | } | |
585 | ||
586 | int user_finalize(User *u) { | |
587 | Session *s; | |
588 | int r = 0, k; | |
589 | ||
590 | assert(u); | |
591 | ||
592 | if (u->started) | |
593 | log_debug("User %s logged out.", u->name); | |
594 | ||
595 | LIST_FOREACH(sessions_by_user, s, u->sessions) { | |
596 | k = session_finalize(s); | |
597 | if (k < 0) | |
598 | r = k; | |
599 | } | |
600 | ||
20263082 LP |
601 | /* Kill XDG_RUNTIME_DIR */ |
602 | k = user_remove_runtime_path(u); | |
603 | if (k < 0) | |
604 | r = k; | |
605 | ||
66cdd0f2 LP |
606 | /* Clean SysV + POSIX IPC objects */ |
607 | if (u->manager->remove_ipc) { | |
608 | k = clean_ipc(u->uid); | |
609 | if (k < 0) | |
610 | r = k; | |
611 | } | |
612 | ||
d2f92cdf LP |
613 | unlink(u->state_file); |
614 | user_add_to_gc_queue(u); | |
615 | ||
405e0255 | 616 | if (u->started) { |
ed18b08b | 617 | user_send_signal(u, false); |
405e0255 LP |
618 | u->started = false; |
619 | } | |
9418f147 | 620 | |
20263082 LP |
621 | return r; |
622 | } | |
623 | ||
a185c5aa LP |
624 | int user_get_idle_hint(User *u, dual_timestamp *t) { |
625 | Session *s; | |
626 | bool idle_hint = true; | |
5cb14b37 | 627 | dual_timestamp ts = DUAL_TIMESTAMP_NULL; |
a185c5aa LP |
628 | |
629 | assert(u); | |
630 | ||
631 | LIST_FOREACH(sessions_by_user, s, u->sessions) { | |
632 | dual_timestamp k; | |
633 | int ih; | |
634 | ||
635 | ih = session_get_idle_hint(s, &k); | |
636 | if (ih < 0) | |
637 | return ih; | |
638 | ||
639 | if (!ih) { | |
640 | if (!idle_hint) { | |
641 | if (k.monotonic < ts.monotonic) | |
642 | ts = k; | |
643 | } else { | |
644 | idle_hint = false; | |
645 | ts = k; | |
646 | } | |
647 | } else if (idle_hint) { | |
648 | ||
649 | if (k.monotonic > ts.monotonic) | |
650 | ts = k; | |
651 | } | |
652 | } | |
653 | ||
654 | if (t) | |
655 | *t = ts; | |
656 | ||
657 | return idle_hint; | |
658 | } | |
659 | ||
3a9f7a30 | 660 | int user_check_linger_file(User *u) { |
cc377381 LP |
661 | _cleanup_free_ char *cc = NULL; |
662 | char *p = NULL; | |
e96cd586 | 663 | |
cc377381 LP |
664 | cc = cescape(u->name); |
665 | if (!cc) | |
e96cd586 LP |
666 | return -ENOMEM; |
667 | ||
63c372cb | 668 | p = strjoina("/var/lib/systemd/linger/", cc); |
e96cd586 | 669 | |
cc377381 | 670 | return access(p, F_OK) >= 0; |
e96cd586 LP |
671 | } |
672 | ||
cc377381 | 673 | bool user_check_gc(User *u, bool drop_not_started) { |
20263082 LP |
674 | assert(u); |
675 | ||
4a4b033f | 676 | if (drop_not_started && !u->started) |
cc377381 | 677 | return false; |
932e3ee7 | 678 | |
20263082 | 679 | if (u->sessions) |
cc377381 | 680 | return true; |
20263082 | 681 | |
e96cd586 | 682 | if (user_check_linger_file(u) > 0) |
cc377381 | 683 | return true; |
20263082 | 684 | |
cc377381 LP |
685 | if (u->slice_job && manager_job_is_active(u->manager, u->slice_job)) |
686 | return true; | |
687 | ||
688 | if (u->service_job && manager_job_is_active(u->manager, u->service_job)) | |
689 | return true; | |
405e0255 | 690 | |
cc377381 | 691 | return false; |
20263082 LP |
692 | } |
693 | ||
14c3baca LP |
694 | void user_add_to_gc_queue(User *u) { |
695 | assert(u); | |
696 | ||
697 | if (u->in_gc_queue) | |
698 | return; | |
699 | ||
71fda00f | 700 | LIST_PREPEND(gc_queue, u->manager->user_gc_queue, u); |
14c3baca LP |
701 | u->in_gc_queue = true; |
702 | } | |
703 | ||
20263082 LP |
704 | UserState user_get_state(User *u) { |
705 | Session *i; | |
706 | ||
707 | assert(u); | |
708 | ||
5f41d1f1 LP |
709 | if (u->stopping) |
710 | return USER_CLOSING; | |
711 | ||
fb6becb4 | 712 | if (u->slice_job || u->service_job) |
405e0255 | 713 | return USER_OPENING; |
c9caad80 | 714 | |
5f41d1f1 LP |
715 | if (u->sessions) { |
716 | bool all_closing = true; | |
717 | ||
718 | LIST_FOREACH(sessions_by_user, i, u->sessions) { | |
00555a2e DH |
719 | SessionState state; |
720 | ||
721 | state = session_get_state(i); | |
722 | if (state == SESSION_ACTIVE) | |
5f41d1f1 | 723 | return USER_ACTIVE; |
00555a2e | 724 | if (state != SESSION_CLOSING) |
5f41d1f1 LP |
725 | all_closing = false; |
726 | } | |
20263082 | 727 | |
c9caad80 | 728 | return all_closing ? USER_CLOSING : USER_ONLINE; |
5f41d1f1 | 729 | } |
e96cd586 LP |
730 | |
731 | if (user_check_linger_file(u) > 0) | |
732 | return USER_LINGERING; | |
733 | ||
734 | return USER_CLOSING; | |
20263082 LP |
735 | } |
736 | ||
de07ab16 | 737 | int user_kill(User *u, int signo) { |
de07ab16 LP |
738 | assert(u); |
739 | ||
fb6becb4 | 740 | if (!u->slice) |
de07ab16 LP |
741 | return -ESRCH; |
742 | ||
fb6becb4 | 743 | return manager_kill_unit(u->manager, u->slice, KILL_ALL, signo, NULL); |
de07ab16 LP |
744 | } |
745 | ||
cde40acc | 746 | static bool elect_display_filter(Session *s) { |
7ffeb45c PW |
747 | /* Return true if the session is a candidate for the user’s ‘primary |
748 | * session’ or ‘display’. */ | |
749 | assert(s); | |
750 | ||
751 | return (s->class == SESSION_USER && !s->stopping); | |
752 | } | |
753 | ||
cde40acc | 754 | static int elect_display_compare(Session *s1, Session *s2) { |
7ffeb45c PW |
755 | /* Indexed by SessionType. Lower numbers mean more preferred. */ |
756 | const int type_ranks[_SESSION_TYPE_MAX] = { | |
757 | [SESSION_UNSPECIFIED] = 0, | |
758 | [SESSION_TTY] = -2, | |
759 | [SESSION_X11] = -3, | |
760 | [SESSION_WAYLAND] = -3, | |
761 | [SESSION_MIR] = -3, | |
762 | [SESSION_WEB] = -1, | |
763 | }; | |
764 | ||
765 | /* Calculate the partial order relationship between s1 and s2, | |
766 | * returning < 0 if s1 is preferred as the user’s ‘primary session’, | |
767 | * 0 if s1 and s2 are equally preferred or incomparable, or > 0 if s2 | |
768 | * is preferred. | |
769 | * | |
770 | * s1 or s2 may be NULL. */ | |
b9460fdc RC |
771 | if (!s1 && !s2) |
772 | return 0; | |
773 | ||
7ffeb45c PW |
774 | if ((s1 == NULL) != (s2 == NULL)) |
775 | return (s1 == NULL) - (s2 == NULL); | |
776 | ||
777 | if (s1->stopping != s2->stopping) | |
778 | return s1->stopping - s2->stopping; | |
779 | ||
780 | if ((s1->class != SESSION_USER) != (s2->class != SESSION_USER)) | |
781 | return (s1->class != SESSION_USER) - (s2->class != SESSION_USER); | |
782 | ||
783 | if ((s1->type == _SESSION_TYPE_INVALID) != (s2->type == _SESSION_TYPE_INVALID)) | |
784 | return (s1->type == _SESSION_TYPE_INVALID) - (s2->type == _SESSION_TYPE_INVALID); | |
785 | ||
786 | if (s1->type != s2->type) | |
787 | return type_ranks[s1->type] - type_ranks[s2->type]; | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
952d3260 | 792 | void user_elect_display(User *u) { |
7ffeb45c | 793 | Session *s; |
952d3260 LP |
794 | |
795 | assert(u); | |
796 | ||
797 | /* This elects a primary session for each user, which we call | |
798 | * the "display". We try to keep the assignment stable, but we | |
799 | * "upgrade" to better choices. */ | |
7ffeb45c | 800 | log_debug("Electing new display for user %s", u->name); |
952d3260 LP |
801 | |
802 | LIST_FOREACH(sessions_by_user, s, u->sessions) { | |
7ffeb45c PW |
803 | if (!elect_display_filter(s)) { |
804 | log_debug("Ignoring session %s", s->id); | |
952d3260 | 805 | continue; |
7ffeb45c | 806 | } |
952d3260 | 807 | |
7ffeb45c PW |
808 | if (elect_display_compare(s, u->display) < 0) { |
809 | log_debug("Choosing session %s in preference to %s", s->id, u->display ? u->display->id : "-"); | |
810 | u->display = s; | |
811 | } | |
e9e74f28 | 812 | } |
952d3260 LP |
813 | } |
814 | ||
20263082 LP |
815 | static const char* const user_state_table[_USER_STATE_MAX] = { |
816 | [USER_OFFLINE] = "offline", | |
fb6becb4 | 817 | [USER_OPENING] = "opening", |
20263082 LP |
818 | [USER_LINGERING] = "lingering", |
819 | [USER_ONLINE] = "online", | |
e96cd586 LP |
820 | [USER_ACTIVE] = "active", |
821 | [USER_CLOSING] = "closing" | |
20263082 LP |
822 | }; |
823 | ||
824 | DEFINE_STRING_TABLE_LOOKUP(user_state, UserState); | |
1c231f56 LP |
825 | |
826 | int config_parse_tmpfs_size( | |
827 | const char* unit, | |
828 | const char *filename, | |
829 | unsigned line, | |
830 | const char *section, | |
831 | unsigned section_line, | |
832 | const char *lvalue, | |
833 | int ltype, | |
834 | const char *rvalue, | |
835 | void *data, | |
836 | void *userdata) { | |
837 | ||
838 | size_t *sz = data; | |
839 | const char *e; | |
840 | int r; | |
841 | ||
842 | assert(filename); | |
843 | assert(lvalue); | |
844 | assert(rvalue); | |
845 | assert(data); | |
846 | ||
847 | e = endswith(rvalue, "%"); | |
848 | if (e) { | |
849 | unsigned long ul; | |
850 | char *f; | |
851 | ||
852 | errno = 0; | |
853 | ul = strtoul(rvalue, &f, 10); | |
854 | if (errno != 0 || f != e) { | |
855 | log_syntax(unit, LOG_ERR, filename, line, errno ? errno : EINVAL, "Failed to parse percentage value, ignoring: %s", rvalue); | |
856 | return 0; | |
857 | } | |
858 | ||
859 | if (ul <= 0 || ul >= 100) { | |
860 | log_syntax(unit, LOG_ERR, filename, line, errno ? errno : EINVAL, "Percentage value out of range, ignoring: %s", rvalue); | |
861 | return 0; | |
862 | } | |
863 | ||
864 | *sz = PAGE_ALIGN((size_t) ((physical_memory() * (uint64_t) ul) / (uint64_t) 100)); | |
865 | } else { | |
866 | off_t o; | |
867 | ||
868 | r = parse_size(rvalue, 1024, &o); | |
869 | if (r < 0 || (off_t) (size_t) o != o) { | |
870 | log_syntax(unit, LOG_ERR, filename, line, r < 0 ? -r : ERANGE, "Failed to parse size value, ignoring: %s", rvalue); | |
871 | return 0; | |
872 | } | |
873 | ||
874 | *sz = PAGE_ALIGN((size_t) o); | |
875 | } | |
876 | ||
877 | return 0; | |
878 | } |