Line data Source code
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
9 : under the terms of the GNU Lesser General Public License as published by
10 : the Free Software Foundation; either version 2.1 of the License, or
11 : (at your option) any later version.
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
16 : Lesser General Public License for more details.
17 :
18 : You should have received a copy of the GNU Lesser General Public License
19 : along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 : ***/
21 :
22 : #include <errno.h>
23 : #include <string.h>
24 : #include <unistd.h>
25 : #include <pwd.h>
26 :
27 : #include "sd-messages.h"
28 : #include "strv.h"
29 : #include "mkdir.h"
30 : #include "path-util.h"
31 : #include "special.h"
32 : #include "sleep-config.h"
33 : #include "fileio-label.h"
34 : #include "unit-name.h"
35 : #include "audit.h"
36 : #include "bus-util.h"
37 : #include "bus-error.h"
38 : #include "bus-common-errors.h"
39 : #include "udev-util.h"
40 : #include "selinux-util.h"
41 : #include "efivars.h"
42 : #include "logind.h"
43 : #include "formats-util.h"
44 : #include "process-util.h"
45 : #include "terminal-util.h"
46 : #include "utmp-wtmp.h"
47 :
48 0 : int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret) {
49 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
50 : Session *session;
51 : int r;
52 :
53 0 : assert(m);
54 0 : assert(message);
55 0 : assert(ret);
56 :
57 0 : if (isempty(name)) {
58 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
59 0 : if (r < 0)
60 0 : return r;
61 :
62 0 : r = sd_bus_creds_get_session(creds, &name);
63 0 : if (r < 0)
64 0 : return r;
65 : }
66 :
67 0 : session = hashmap_get(m->sessions, name);
68 0 : if (!session)
69 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
70 :
71 0 : *ret = session;
72 0 : return 0;
73 : }
74 :
75 0 : int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
76 : User *user;
77 : int r;
78 :
79 0 : assert(m);
80 0 : assert(message);
81 0 : assert(ret);
82 :
83 0 : if (uid == UID_INVALID) {
84 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
85 :
86 : /* Note that we get the owner UID of the session, not the actual client UID here! */
87 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
88 0 : if (r < 0)
89 0 : return r;
90 :
91 0 : r = sd_bus_creds_get_owner_uid(creds, &uid);
92 0 : if (r < 0)
93 0 : return r;
94 : }
95 :
96 0 : user = hashmap_get(m->users, UID_TO_PTR(uid));
97 0 : if (!user)
98 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user "UID_FMT" known or logged in", uid);
99 :
100 0 : *ret = user;
101 0 : return 0;
102 : }
103 :
104 0 : int manager_get_seat_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Seat **ret) {
105 : Seat *seat;
106 : int r;
107 :
108 0 : assert(m);
109 0 : assert(message);
110 0 : assert(ret);
111 :
112 0 : if (isempty(name)) {
113 : Session *session;
114 :
115 0 : r = manager_get_session_from_creds(m, message, NULL, error, &session);
116 0 : if (r < 0)
117 0 : return r;
118 :
119 0 : seat = session->seat;
120 :
121 0 : if (!seat)
122 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session has no seat.");
123 : } else {
124 0 : seat = hashmap_get(m->seats, name);
125 0 : if (!seat)
126 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
127 : }
128 :
129 0 : *ret = seat;
130 0 : return 0;
131 : }
132 :
133 0 : static int property_get_idle_hint(
134 : sd_bus *bus,
135 : const char *path,
136 : const char *interface,
137 : const char *property,
138 : sd_bus_message *reply,
139 : void *userdata,
140 : sd_bus_error *error) {
141 :
142 0 : Manager *m = userdata;
143 :
144 0 : assert(bus);
145 0 : assert(reply);
146 0 : assert(m);
147 :
148 0 : return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
149 : }
150 :
151 0 : static int property_get_idle_since_hint(
152 : sd_bus *bus,
153 : const char *path,
154 : const char *interface,
155 : const char *property,
156 : sd_bus_message *reply,
157 : void *userdata,
158 : sd_bus_error *error) {
159 :
160 0 : Manager *m = userdata;
161 0 : dual_timestamp t = DUAL_TIMESTAMP_NULL;
162 :
163 0 : assert(bus);
164 0 : assert(reply);
165 0 : assert(m);
166 :
167 0 : manager_get_idle_hint(m, &t);
168 :
169 0 : return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
170 : }
171 :
172 0 : static int property_get_inhibited(
173 : sd_bus *bus,
174 : const char *path,
175 : const char *interface,
176 : const char *property,
177 : sd_bus_message *reply,
178 : void *userdata,
179 : sd_bus_error *error) {
180 :
181 0 : Manager *m = userdata;
182 : InhibitWhat w;
183 :
184 0 : assert(bus);
185 0 : assert(reply);
186 0 : assert(m);
187 :
188 0 : w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
189 :
190 0 : return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
191 : }
192 :
193 0 : static int property_get_preparing(
194 : sd_bus *bus,
195 : const char *path,
196 : const char *interface,
197 : const char *property,
198 : sd_bus_message *reply,
199 : void *userdata,
200 : sd_bus_error *error) {
201 :
202 0 : Manager *m = userdata;
203 : bool b;
204 :
205 0 : assert(bus);
206 0 : assert(reply);
207 0 : assert(m);
208 :
209 0 : if (streq(property, "PreparingForShutdown"))
210 0 : b = !!(m->action_what & INHIBIT_SHUTDOWN);
211 : else
212 0 : b = !!(m->action_what & INHIBIT_SLEEP);
213 :
214 0 : return sd_bus_message_append(reply, "b", b);
215 : }
216 :
217 0 : static int property_get_scheduled_shutdown(
218 : sd_bus *bus,
219 : const char *path,
220 : const char *interface,
221 : const char *property,
222 : sd_bus_message *reply,
223 : void *userdata,
224 : sd_bus_error *error) {
225 :
226 0 : Manager *m = userdata;
227 : int r;
228 :
229 0 : assert(bus);
230 0 : assert(reply);
231 0 : assert(m);
232 :
233 0 : r = sd_bus_message_open_container(reply, 'r', "st");
234 0 : if (r < 0)
235 0 : return r;
236 :
237 0 : r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout);
238 0 : if (r < 0)
239 0 : return r;
240 :
241 0 : return sd_bus_message_close_container(reply);
242 : }
243 :
244 0 : static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
245 :
246 0 : static int property_get_docked(
247 : sd_bus *bus,
248 : const char *path,
249 : const char *interface,
250 : const char *property,
251 : sd_bus_message *reply,
252 : void *userdata,
253 : sd_bus_error *error) {
254 :
255 0 : Manager *m = userdata;
256 :
257 0 : assert(bus);
258 0 : assert(reply);
259 0 : assert(m);
260 :
261 0 : return sd_bus_message_append(reply, "b", manager_is_docked_or_external_displays(m));
262 : }
263 :
264 0 : static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
265 0 : _cleanup_free_ char *p = NULL;
266 0 : Manager *m = userdata;
267 : const char *name;
268 : Session *session;
269 : int r;
270 :
271 0 : assert(message);
272 0 : assert(m);
273 :
274 0 : r = sd_bus_message_read(message, "s", &name);
275 0 : if (r < 0)
276 0 : return r;
277 :
278 0 : r = manager_get_session_from_creds(m, message, name, error, &session);
279 0 : if (r < 0)
280 0 : return r;
281 :
282 0 : p = session_bus_path(session);
283 0 : if (!p)
284 0 : return -ENOMEM;
285 :
286 0 : return sd_bus_reply_method_return(message, "o", p);
287 : }
288 :
289 0 : static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
290 0 : _cleanup_free_ char *p = NULL;
291 0 : Session *session = NULL;
292 0 : Manager *m = userdata;
293 : pid_t pid;
294 : int r;
295 :
296 0 : assert(message);
297 0 : assert(m);
298 :
299 : assert_cc(sizeof(pid_t) == sizeof(uint32_t));
300 :
301 0 : r = sd_bus_message_read(message, "u", &pid);
302 0 : if (r < 0)
303 0 : return r;
304 :
305 0 : if (pid <= 0) {
306 0 : r = manager_get_session_from_creds(m, message, NULL, error, &session);
307 0 : if (r < 0)
308 0 : return r;
309 : } else {
310 0 : r = manager_get_session_by_pid(m, pid, &session);
311 0 : if (r < 0)
312 0 : return r;
313 :
314 0 : if (!session)
315 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID, "PID "PID_FMT" does not belong to any known session", pid);
316 : }
317 :
318 0 : p = session_bus_path(session);
319 0 : if (!p)
320 0 : return -ENOMEM;
321 :
322 0 : return sd_bus_reply_method_return(message, "o", p);
323 : }
324 :
325 0 : static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
326 0 : _cleanup_free_ char *p = NULL;
327 0 : Manager *m = userdata;
328 : uint32_t uid;
329 : User *user;
330 : int r;
331 :
332 0 : assert(message);
333 0 : assert(m);
334 :
335 0 : r = sd_bus_message_read(message, "u", &uid);
336 0 : if (r < 0)
337 0 : return r;
338 :
339 0 : r = manager_get_user_from_creds(m, message, uid, error, &user);
340 0 : if (r < 0)
341 0 : return r;
342 :
343 0 : p = user_bus_path(user);
344 0 : if (!p)
345 0 : return -ENOMEM;
346 :
347 0 : return sd_bus_reply_method_return(message, "o", p);
348 : }
349 :
350 0 : static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
351 0 : _cleanup_free_ char *p = NULL;
352 0 : Manager *m = userdata;
353 0 : User *user = NULL;
354 : pid_t pid;
355 : int r;
356 :
357 0 : assert(message);
358 0 : assert(m);
359 :
360 : assert_cc(sizeof(pid_t) == sizeof(uint32_t));
361 :
362 0 : r = sd_bus_message_read(message, "u", &pid);
363 0 : if (r < 0)
364 0 : return r;
365 :
366 0 : if (pid <= 0) {
367 0 : r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
368 0 : if (r < 0)
369 0 : return r;
370 : } else {
371 0 : r = manager_get_user_by_pid(m, pid, &user);
372 0 : if (r < 0)
373 0 : return r;
374 0 : if (!user)
375 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID, "PID "PID_FMT" does not belong to any known or logged in user", pid);
376 : }
377 :
378 0 : p = user_bus_path(user);
379 0 : if (!p)
380 0 : return -ENOMEM;
381 :
382 0 : return sd_bus_reply_method_return(message, "o", p);
383 : }
384 :
385 0 : static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
386 0 : _cleanup_free_ char *p = NULL;
387 0 : Manager *m = userdata;
388 : const char *name;
389 : Seat *seat;
390 : int r;
391 :
392 0 : assert(message);
393 0 : assert(m);
394 :
395 0 : r = sd_bus_message_read(message, "s", &name);
396 0 : if (r < 0)
397 0 : return r;
398 :
399 0 : r = manager_get_seat_from_creds(m, message, name, error, &seat);
400 0 : if (r < 0)
401 0 : return r;
402 :
403 0 : p = seat_bus_path(seat);
404 0 : if (!p)
405 0 : return -ENOMEM;
406 :
407 0 : return sd_bus_reply_method_return(message, "o", p);
408 : }
409 :
410 0 : static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
411 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
412 0 : Manager *m = userdata;
413 : Session *session;
414 : Iterator i;
415 : int r;
416 :
417 0 : assert(message);
418 0 : assert(m);
419 :
420 0 : r = sd_bus_message_new_method_return(message, &reply);
421 0 : if (r < 0)
422 0 : return r;
423 :
424 0 : r = sd_bus_message_open_container(reply, 'a', "(susso)");
425 0 : if (r < 0)
426 0 : return r;
427 :
428 0 : HASHMAP_FOREACH(session, m->sessions, i) {
429 0 : _cleanup_free_ char *p = NULL;
430 :
431 0 : p = session_bus_path(session);
432 0 : if (!p)
433 0 : return -ENOMEM;
434 :
435 0 : r = sd_bus_message_append(reply, "(susso)",
436 0 : session->id,
437 0 : (uint32_t) session->user->uid,
438 0 : session->user->name,
439 0 : session->seat ? session->seat->id : "",
440 : p);
441 0 : if (r < 0)
442 0 : return r;
443 : }
444 :
445 0 : r = sd_bus_message_close_container(reply);
446 0 : if (r < 0)
447 0 : return r;
448 :
449 0 : return sd_bus_send(NULL, reply, NULL);
450 : }
451 :
452 0 : static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
453 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
454 0 : Manager *m = userdata;
455 : User *user;
456 : Iterator i;
457 : int r;
458 :
459 0 : assert(message);
460 0 : assert(m);
461 :
462 0 : r = sd_bus_message_new_method_return(message, &reply);
463 0 : if (r < 0)
464 0 : return r;
465 :
466 0 : r = sd_bus_message_open_container(reply, 'a', "(uso)");
467 0 : if (r < 0)
468 0 : return r;
469 :
470 0 : HASHMAP_FOREACH(user, m->users, i) {
471 0 : _cleanup_free_ char *p = NULL;
472 :
473 0 : p = user_bus_path(user);
474 0 : if (!p)
475 0 : return -ENOMEM;
476 :
477 0 : r = sd_bus_message_append(reply, "(uso)",
478 0 : (uint32_t) user->uid,
479 0 : user->name,
480 : p);
481 0 : if (r < 0)
482 0 : return r;
483 : }
484 :
485 0 : r = sd_bus_message_close_container(reply);
486 0 : if (r < 0)
487 0 : return r;
488 :
489 0 : return sd_bus_send(NULL, reply, NULL);
490 : }
491 :
492 0 : static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
493 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
494 0 : Manager *m = userdata;
495 : Seat *seat;
496 : Iterator i;
497 : int r;
498 :
499 0 : assert(message);
500 0 : assert(m);
501 :
502 0 : r = sd_bus_message_new_method_return(message, &reply);
503 0 : if (r < 0)
504 0 : return r;
505 :
506 0 : r = sd_bus_message_open_container(reply, 'a', "(so)");
507 0 : if (r < 0)
508 0 : return r;
509 :
510 0 : HASHMAP_FOREACH(seat, m->seats, i) {
511 0 : _cleanup_free_ char *p = NULL;
512 :
513 0 : p = seat_bus_path(seat);
514 0 : if (!p)
515 0 : return -ENOMEM;
516 :
517 0 : r = sd_bus_message_append(reply, "(so)", seat->id, p);
518 0 : if (r < 0)
519 0 : return r;
520 : }
521 :
522 0 : r = sd_bus_message_close_container(reply);
523 0 : if (r < 0)
524 0 : return r;
525 :
526 0 : return sd_bus_send(NULL, reply, NULL);
527 : }
528 :
529 0 : static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
530 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
531 0 : Manager *m = userdata;
532 : Inhibitor *inhibitor;
533 : Iterator i;
534 : int r;
535 :
536 0 : assert(message);
537 0 : assert(m);
538 :
539 0 : r = sd_bus_message_new_method_return(message, &reply);
540 0 : if (r < 0)
541 0 : return r;
542 :
543 0 : r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
544 0 : if (r < 0)
545 0 : return r;
546 :
547 0 : HASHMAP_FOREACH(inhibitor, m->inhibitors, i) {
548 :
549 0 : r = sd_bus_message_append(reply, "(ssssuu)",
550 0 : strempty(inhibit_what_to_string(inhibitor->what)),
551 0 : strempty(inhibitor->who),
552 0 : strempty(inhibitor->why),
553 0 : strempty(inhibit_mode_to_string(inhibitor->mode)),
554 0 : (uint32_t) inhibitor->uid,
555 0 : (uint32_t) inhibitor->pid);
556 0 : if (r < 0)
557 0 : return r;
558 : }
559 :
560 0 : r = sd_bus_message_close_container(reply);
561 0 : if (r < 0)
562 0 : return r;
563 :
564 0 : return sd_bus_send(NULL, reply, NULL);
565 : }
566 :
567 0 : static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
568 : const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
569 0 : uint32_t uid, leader, audit_id = 0;
570 0 : _cleanup_free_ char *id = NULL;
571 0 : Session *session = NULL;
572 0 : Manager *m = userdata;
573 0 : User *user = NULL;
574 0 : Seat *seat = NULL;
575 : int remote;
576 0 : uint32_t vtnr = 0;
577 : SessionType t;
578 : SessionClass c;
579 : int r;
580 :
581 0 : assert(message);
582 0 : assert(m);
583 :
584 0 : r = sd_bus_message_read(message, "uusssssussbss", &uid, &leader, &service, &type, &class, &desktop, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
585 0 : if (r < 0)
586 0 : return r;
587 :
588 0 : if (leader == 1)
589 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
590 :
591 0 : if (isempty(type))
592 0 : t = _SESSION_TYPE_INVALID;
593 : else {
594 0 : t = session_type_from_string(type);
595 0 : if (t < 0)
596 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type);
597 : }
598 :
599 0 : if (isempty(class))
600 0 : c = _SESSION_CLASS_INVALID;
601 : else {
602 0 : c = session_class_from_string(class);
603 0 : if (c < 0)
604 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class);
605 : }
606 :
607 0 : if (isempty(desktop))
608 0 : desktop = NULL;
609 : else {
610 0 : if (!string_is_safe(desktop))
611 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid desktop string %s", desktop);
612 : }
613 :
614 0 : if (isempty(cseat))
615 0 : seat = NULL;
616 : else {
617 0 : seat = hashmap_get(m->seats, cseat);
618 0 : if (!seat)
619 0 : return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", cseat);
620 : }
621 :
622 0 : if (tty_is_vc(tty)) {
623 : int v;
624 :
625 0 : if (!seat)
626 0 : seat = m->seat0;
627 0 : else if (seat != m->seat0)
628 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
629 :
630 0 : v = vtnr_from_tty(tty);
631 0 : if (v <= 0)
632 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot determine VT number from virtual console TTY %s", tty);
633 :
634 0 : if (!vtnr)
635 0 : vtnr = (uint32_t) v;
636 0 : else if (vtnr != (uint32_t) v)
637 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified TTY and VT number do not match");
638 :
639 0 : } else if (tty_is_console(tty)) {
640 :
641 0 : if (!seat)
642 0 : seat = m->seat0;
643 0 : else if (seat != m->seat0)
644 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but seat is not seat0");
645 :
646 0 : if (vtnr != 0)
647 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but VT number is not 0");
648 : }
649 :
650 0 : if (seat) {
651 0 : if (seat_has_vts(seat)) {
652 0 : if (!vtnr || vtnr > 63)
653 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "VT number out of range");
654 : } else {
655 0 : if (vtnr != 0)
656 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat has no VTs but VT number not 0");
657 : }
658 : }
659 :
660 0 : r = sd_bus_message_enter_container(message, 'a', "(sv)");
661 0 : if (r < 0)
662 0 : return r;
663 :
664 0 : if (t == _SESSION_TYPE_INVALID) {
665 0 : if (!isempty(display))
666 0 : t = SESSION_X11;
667 0 : else if (!isempty(tty))
668 0 : t = SESSION_TTY;
669 : else
670 0 : t = SESSION_UNSPECIFIED;
671 : }
672 :
673 0 : if (c == _SESSION_CLASS_INVALID) {
674 0 : if (t == SESSION_UNSPECIFIED)
675 0 : c = SESSION_BACKGROUND;
676 : else
677 0 : c = SESSION_USER;
678 : }
679 :
680 0 : if (leader <= 0) {
681 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
682 :
683 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
684 0 : if (r < 0)
685 0 : return r;
686 :
687 0 : r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
688 0 : if (r < 0)
689 0 : return r;
690 : }
691 :
692 0 : r = manager_get_session_by_pid(m, leader, NULL);
693 0 : if (r > 0)
694 0 : return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already running in a session");
695 :
696 : /*
697 : * Old gdm and lightdm start the user-session on the same VT as
698 : * the greeter session. But they destroy the greeter session
699 : * after the user-session and want the user-session to take
700 : * over the VT. We need to support this for
701 : * backwards-compatibility, so make sure we allow new sessions
702 : * on a VT that a greeter is running on. Furthermore, to allow
703 : * re-logins, we have to allow a greeter to take over a used VT for
704 : * the exact same reasons.
705 : */
706 0 : if (c != SESSION_GREETER &&
707 0 : vtnr > 0 &&
708 0 : vtnr < m->seat0->position_count &&
709 0 : m->seat0->positions[vtnr] &&
710 0 : m->seat0->positions[vtnr]->class != SESSION_GREETER)
711 0 : return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
712 :
713 0 : audit_session_from_pid(leader, &audit_id);
714 0 : if (audit_id > 0) {
715 : /* Keep our session IDs and the audit session IDs in sync */
716 :
717 0 : if (asprintf(&id, "%"PRIu32, audit_id) < 0)
718 0 : return -ENOMEM;
719 :
720 : /* Wut? There's already a session by this name and we
721 : * didn't find it above? Weird, then let's not trust
722 : * the audit data and let's better register a new
723 : * ID */
724 0 : if (hashmap_get(m->sessions, id)) {
725 0 : log_warning("Existing logind session ID %s used by new audit session, ignoring", id);
726 0 : audit_id = 0;
727 :
728 0 : free(id);
729 0 : id = NULL;
730 : }
731 : }
732 :
733 0 : if (!id) {
734 : do {
735 0 : free(id);
736 0 : id = NULL;
737 :
738 0 : if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
739 0 : return -ENOMEM;
740 :
741 0 : } while (hashmap_get(m->sessions, id));
742 : }
743 :
744 0 : r = manager_add_user_by_uid(m, uid, &user);
745 0 : if (r < 0)
746 0 : goto fail;
747 :
748 0 : r = manager_add_session(m, id, &session);
749 0 : if (r < 0)
750 0 : goto fail;
751 :
752 0 : session_set_user(session, user);
753 :
754 0 : session->leader = leader;
755 0 : session->audit_id = audit_id;
756 0 : session->type = t;
757 0 : session->class = c;
758 0 : session->remote = remote;
759 0 : session->vtnr = vtnr;
760 :
761 0 : if (!isempty(tty)) {
762 0 : session->tty = strdup(tty);
763 0 : if (!session->tty) {
764 0 : r = -ENOMEM;
765 0 : goto fail;
766 : }
767 : }
768 :
769 0 : if (!isempty(display)) {
770 0 : session->display = strdup(display);
771 0 : if (!session->display) {
772 0 : r = -ENOMEM;
773 0 : goto fail;
774 : }
775 : }
776 :
777 0 : if (!isempty(remote_user)) {
778 0 : session->remote_user = strdup(remote_user);
779 0 : if (!session->remote_user) {
780 0 : r = -ENOMEM;
781 0 : goto fail;
782 : }
783 : }
784 :
785 0 : if (!isempty(remote_host)) {
786 0 : session->remote_host = strdup(remote_host);
787 0 : if (!session->remote_host) {
788 0 : r = -ENOMEM;
789 0 : goto fail;
790 : }
791 : }
792 :
793 0 : if (!isempty(service)) {
794 0 : session->service = strdup(service);
795 0 : if (!session->service) {
796 0 : r = -ENOMEM;
797 0 : goto fail;
798 : }
799 : }
800 :
801 0 : if (!isempty(desktop)) {
802 0 : session->desktop = strdup(desktop);
803 0 : if (!session->desktop) {
804 0 : r = -ENOMEM;
805 0 : goto fail;
806 : }
807 : }
808 :
809 0 : if (seat) {
810 0 : r = seat_attach_session(seat, session);
811 0 : if (r < 0)
812 0 : goto fail;
813 : }
814 :
815 0 : r = session_start(session);
816 0 : if (r < 0)
817 0 : goto fail;
818 :
819 0 : session->create_message = sd_bus_message_ref(message);
820 :
821 : /* Now, let's wait until the slice unit and stuff got
822 : * created. We send the reply back from
823 : * session_send_create_reply(). */
824 :
825 0 : return 1;
826 :
827 : fail:
828 0 : if (session)
829 0 : session_add_to_gc_queue(session);
830 :
831 0 : if (user)
832 0 : user_add_to_gc_queue(user);
833 :
834 0 : return r;
835 : }
836 :
837 0 : static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
838 0 : Manager *m = userdata;
839 : Session *session;
840 : const char *name;
841 : int r;
842 :
843 0 : assert(message);
844 0 : assert(m);
845 :
846 0 : r = sd_bus_message_read(message, "s", &name);
847 0 : if (r < 0)
848 0 : return r;
849 :
850 0 : r = manager_get_session_from_creds(m, message, name, error, &session);
851 0 : if (r < 0)
852 0 : return r;
853 :
854 0 : r = session_release(session);
855 0 : if (r < 0)
856 0 : return r;
857 :
858 0 : return sd_bus_reply_method_return(message, NULL);
859 : }
860 :
861 0 : static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
862 0 : Manager *m = userdata;
863 : Session *session;
864 : const char *name;
865 : int r;
866 :
867 0 : assert(message);
868 0 : assert(m);
869 :
870 0 : r = sd_bus_message_read(message, "s", &name);
871 0 : if (r < 0)
872 0 : return r;
873 :
874 0 : r = manager_get_session_from_creds(m, message, name, error, &session);
875 0 : if (r < 0)
876 0 : return r;
877 :
878 0 : return bus_session_method_activate(message, session, error);
879 : }
880 :
881 0 : static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
882 : const char *session_name, *seat_name;
883 0 : Manager *m = userdata;
884 : Session *session;
885 : Seat *seat;
886 : int r;
887 :
888 0 : assert(message);
889 0 : assert(m);
890 :
891 : /* Same as ActivateSession() but refuses to work if
892 : * the seat doesn't match */
893 :
894 0 : r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
895 0 : if (r < 0)
896 0 : return r;
897 :
898 0 : r = manager_get_session_from_creds(m, message, session_name, error, &session);
899 0 : if (r < 0)
900 0 : return r;
901 :
902 0 : r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
903 0 : if (r < 0)
904 0 : return r;
905 :
906 0 : if (session->seat != seat)
907 0 : return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name);
908 :
909 0 : r = session_activate(session);
910 0 : if (r < 0)
911 0 : return r;
912 :
913 0 : return sd_bus_reply_method_return(message, NULL);
914 : }
915 :
916 0 : static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
917 0 : Manager *m = userdata;
918 : Session *session;
919 : const char *name;
920 : int r;
921 :
922 0 : assert(message);
923 0 : assert(m);
924 :
925 0 : r = sd_bus_message_read(message, "s", &name);
926 0 : if (r < 0)
927 0 : return r;
928 :
929 0 : r = manager_get_session_from_creds(m, message, name, error, &session);
930 0 : if (r < 0)
931 0 : return r;
932 :
933 0 : return bus_session_method_lock(message, session, error);
934 : }
935 :
936 0 : static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
937 0 : Manager *m = userdata;
938 : int r;
939 :
940 0 : assert(message);
941 0 : assert(m);
942 :
943 0 : r = bus_verify_polkit_async(
944 : message,
945 : CAP_SYS_ADMIN,
946 : "org.freedesktop.login1.lock-sessions",
947 : false,
948 : UID_INVALID,
949 : &m->polkit_registry,
950 : error);
951 0 : if (r < 0)
952 0 : return r;
953 0 : if (r == 0)
954 0 : return 1; /* Will call us back */
955 :
956 0 : r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
957 0 : if (r < 0)
958 0 : return r;
959 :
960 0 : return sd_bus_reply_method_return(message, NULL);
961 : }
962 :
963 0 : static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
964 : const char *name;
965 0 : Manager *m = userdata;
966 : Session *session;
967 : int r;
968 :
969 0 : assert(message);
970 0 : assert(m);
971 :
972 0 : r = sd_bus_message_read(message, "s", &name);
973 0 : if (r < 0)
974 0 : return r;
975 :
976 0 : r = manager_get_session_from_creds(m, message, name, error, &session);
977 0 : if (r < 0)
978 0 : return r;
979 :
980 0 : return bus_session_method_kill(message, session, error);
981 : }
982 :
983 0 : static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
984 0 : Manager *m = userdata;
985 : uint32_t uid;
986 : User *user;
987 : int r;
988 :
989 0 : assert(message);
990 0 : assert(m);
991 :
992 0 : r = sd_bus_message_read(message, "u", &uid);
993 0 : if (r < 0)
994 0 : return r;
995 :
996 0 : r = manager_get_user_from_creds(m, message, uid, error, &user);
997 0 : if (r < 0)
998 0 : return r;
999 :
1000 0 : return bus_user_method_kill(message, user, error);
1001 : }
1002 :
1003 0 : static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1004 0 : Manager *m = userdata;
1005 : const char *name;
1006 : Session *session;
1007 : int r;
1008 :
1009 0 : assert(message);
1010 0 : assert(m);
1011 :
1012 0 : r = sd_bus_message_read(message, "s", &name);
1013 0 : if (r < 0)
1014 0 : return r;
1015 :
1016 0 : r = manager_get_session_from_creds(m, message, name, error, &session);
1017 0 : if (r < 0)
1018 0 : return r;
1019 :
1020 0 : return bus_session_method_terminate(message, session, error);
1021 : }
1022 :
1023 0 : static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1024 0 : Manager *m = userdata;
1025 : uint32_t uid;
1026 : User *user;
1027 : int r;
1028 :
1029 0 : assert(message);
1030 0 : assert(m);
1031 :
1032 0 : r = sd_bus_message_read(message, "u", &uid);
1033 0 : if (r < 0)
1034 0 : return r;
1035 :
1036 0 : r = manager_get_user_from_creds(m, message, uid, error, &user);
1037 0 : if (r < 0)
1038 0 : return r;
1039 :
1040 0 : return bus_user_method_terminate(message, user, error);
1041 : }
1042 :
1043 0 : static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1044 0 : Manager *m = userdata;
1045 : const char *name;
1046 : Seat *seat;
1047 : int r;
1048 :
1049 0 : assert(message);
1050 0 : assert(m);
1051 :
1052 0 : r = sd_bus_message_read(message, "s", &name);
1053 0 : if (r < 0)
1054 0 : return r;
1055 :
1056 0 : r = manager_get_seat_from_creds(m, message, name, error, &seat);
1057 0 : if (r < 0)
1058 0 : return r;
1059 :
1060 0 : return bus_seat_method_terminate(message, seat, error);
1061 : }
1062 :
1063 0 : static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1064 0 : _cleanup_free_ char *cc = NULL;
1065 0 : Manager *m = userdata;
1066 : int b, r;
1067 : struct passwd *pw;
1068 : const char *path;
1069 : uint32_t uid;
1070 : int interactive;
1071 :
1072 0 : assert(message);
1073 0 : assert(m);
1074 :
1075 0 : r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1076 0 : if (r < 0)
1077 0 : return r;
1078 :
1079 0 : if (uid == UID_INVALID) {
1080 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
1081 :
1082 : /* Note that we get the owner UID of the session, not the actual client UID here! */
1083 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1084 0 : if (r < 0)
1085 0 : return r;
1086 :
1087 0 : r = sd_bus_creds_get_owner_uid(creds, &uid);
1088 0 : if (r < 0)
1089 0 : return r;
1090 : }
1091 :
1092 0 : errno = 0;
1093 0 : pw = getpwuid(uid);
1094 0 : if (!pw)
1095 0 : return errno ? -errno : -ENOENT;
1096 :
1097 0 : r = bus_verify_polkit_async(
1098 : message,
1099 : CAP_SYS_ADMIN,
1100 : "org.freedesktop.login1.set-user-linger",
1101 : interactive,
1102 : UID_INVALID,
1103 : &m->polkit_registry,
1104 : error);
1105 0 : if (r < 0)
1106 0 : return r;
1107 0 : if (r == 0)
1108 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1109 :
1110 0 : mkdir_p_label("/var/lib/systemd", 0755);
1111 :
1112 0 : r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0);
1113 0 : if (r < 0)
1114 0 : return r;
1115 :
1116 0 : cc = cescape(pw->pw_name);
1117 0 : if (!cc)
1118 0 : return -ENOMEM;
1119 :
1120 0 : path = strjoina("/var/lib/systemd/linger/", cc);
1121 0 : if (b) {
1122 : User *u;
1123 :
1124 0 : r = touch(path);
1125 0 : if (r < 0)
1126 0 : return r;
1127 :
1128 0 : if (manager_add_user_by_uid(m, uid, &u) >= 0)
1129 0 : user_start(u);
1130 :
1131 : } else {
1132 : User *u;
1133 :
1134 0 : r = unlink(path);
1135 0 : if (r < 0 && errno != ENOENT)
1136 0 : return -errno;
1137 :
1138 0 : u = hashmap_get(m->users, UID_TO_PTR(uid));
1139 0 : if (u)
1140 0 : user_add_to_gc_queue(u);
1141 : }
1142 :
1143 0 : return sd_bus_reply_method_return(message, NULL);
1144 : }
1145 :
1146 0 : static int trigger_device(Manager *m, struct udev_device *d) {
1147 0 : _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
1148 : struct udev_list_entry *first, *item;
1149 : int r;
1150 :
1151 0 : assert(m);
1152 :
1153 0 : e = udev_enumerate_new(m->udev);
1154 0 : if (!e)
1155 0 : return -ENOMEM;
1156 :
1157 0 : if (d) {
1158 0 : r = udev_enumerate_add_match_parent(e, d);
1159 0 : if (r < 0)
1160 0 : return r;
1161 : }
1162 :
1163 0 : r = udev_enumerate_scan_devices(e);
1164 0 : if (r < 0)
1165 0 : return r;
1166 :
1167 0 : first = udev_enumerate_get_list_entry(e);
1168 0 : udev_list_entry_foreach(item, first) {
1169 0 : _cleanup_free_ char *t = NULL;
1170 : const char *p;
1171 :
1172 0 : p = udev_list_entry_get_name(item);
1173 :
1174 0 : t = strappend(p, "/uevent");
1175 0 : if (!t)
1176 0 : return -ENOMEM;
1177 :
1178 0 : write_string_file(t, "change", WRITE_STRING_FILE_CREATE);
1179 : }
1180 :
1181 0 : return 0;
1182 : }
1183 :
1184 0 : static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1185 0 : _cleanup_udev_device_unref_ struct udev_device *d = NULL;
1186 0 : _cleanup_free_ char *rule = NULL, *file = NULL;
1187 : const char *id_for_seat;
1188 : int r;
1189 :
1190 0 : assert(m);
1191 0 : assert(seat);
1192 0 : assert(sysfs);
1193 :
1194 0 : d = udev_device_new_from_syspath(m->udev, sysfs);
1195 0 : if (!d)
1196 0 : return -ENODEV;
1197 :
1198 0 : if (!udev_device_has_tag(d, "seat"))
1199 0 : return -ENODEV;
1200 :
1201 0 : id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
1202 0 : if (!id_for_seat)
1203 0 : return -ENODEV;
1204 :
1205 0 : if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1206 0 : return -ENOMEM;
1207 :
1208 0 : if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1209 0 : return -ENOMEM;
1210 :
1211 0 : mkdir_p_label("/etc/udev/rules.d", 0755);
1212 0 : mac_selinux_init("/etc");
1213 0 : r = write_string_file_atomic_label(file, rule);
1214 0 : if (r < 0)
1215 0 : return r;
1216 :
1217 0 : return trigger_device(m, d);
1218 : }
1219 :
1220 0 : static int flush_devices(Manager *m) {
1221 0 : _cleanup_closedir_ DIR *d;
1222 :
1223 0 : assert(m);
1224 :
1225 0 : d = opendir("/etc/udev/rules.d");
1226 0 : if (!d) {
1227 0 : if (errno != ENOENT)
1228 0 : log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1229 : } else {
1230 : struct dirent *de;
1231 :
1232 0 : while ((de = readdir(d))) {
1233 :
1234 0 : if (!dirent_is_file(de))
1235 0 : continue;
1236 :
1237 0 : if (!startswith(de->d_name, "72-seat-"))
1238 0 : continue;
1239 :
1240 0 : if (!endswith(de->d_name, ".rules"))
1241 0 : continue;
1242 :
1243 0 : if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1244 0 : log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1245 : }
1246 : }
1247 :
1248 0 : return trigger_device(m, NULL);
1249 : }
1250 :
1251 0 : static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1252 : const char *sysfs, *seat;
1253 0 : Manager *m = userdata;
1254 : int interactive, r;
1255 :
1256 0 : assert(message);
1257 0 : assert(m);
1258 :
1259 0 : r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1260 0 : if (r < 0)
1261 0 : return r;
1262 :
1263 0 : if (!path_startswith(sysfs, "/sys"))
1264 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1265 :
1266 0 : if (!seat_name_is_valid(seat))
1267 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat);
1268 :
1269 0 : r = bus_verify_polkit_async(
1270 : message,
1271 : CAP_SYS_ADMIN,
1272 : "org.freedesktop.login1.attach-device",
1273 : interactive,
1274 : UID_INVALID,
1275 : &m->polkit_registry,
1276 : error);
1277 0 : if (r < 0)
1278 0 : return r;
1279 0 : if (r == 0)
1280 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1281 :
1282 0 : r = attach_device(m, seat, sysfs);
1283 0 : if (r < 0)
1284 0 : return r;
1285 :
1286 0 : return sd_bus_reply_method_return(message, NULL);
1287 : }
1288 :
1289 0 : static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1290 0 : Manager *m = userdata;
1291 : int interactive, r;
1292 :
1293 0 : assert(message);
1294 0 : assert(m);
1295 :
1296 0 : r = sd_bus_message_read(message, "b", &interactive);
1297 0 : if (r < 0)
1298 0 : return r;
1299 :
1300 0 : r = bus_verify_polkit_async(
1301 : message,
1302 : CAP_SYS_ADMIN,
1303 : "org.freedesktop.login1.flush-devices",
1304 : interactive,
1305 : UID_INVALID,
1306 : &m->polkit_registry,
1307 : error);
1308 0 : if (r < 0)
1309 0 : return r;
1310 0 : if (r == 0)
1311 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1312 :
1313 0 : r = flush_devices(m);
1314 0 : if (r < 0)
1315 0 : return r;
1316 :
1317 0 : return sd_bus_reply_method_return(message, NULL);
1318 : }
1319 :
1320 0 : static int have_multiple_sessions(
1321 : Manager *m,
1322 : uid_t uid) {
1323 :
1324 : Session *session;
1325 : Iterator i;
1326 :
1327 0 : assert(m);
1328 :
1329 : /* Check for other users' sessions. Greeter sessions do not
1330 : * count, and non-login sessions do not count either. */
1331 0 : HASHMAP_FOREACH(session, m->sessions, i)
1332 0 : if (session->class == SESSION_USER &&
1333 0 : session->user->uid != uid)
1334 0 : return true;
1335 :
1336 0 : return false;
1337 : }
1338 :
1339 0 : static int bus_manager_log_shutdown(
1340 : Manager *m,
1341 : InhibitWhat w,
1342 : const char *unit_name) {
1343 :
1344 : const char *p, *q;
1345 :
1346 0 : assert(m);
1347 0 : assert(unit_name);
1348 :
1349 0 : if (w != INHIBIT_SHUTDOWN)
1350 0 : return 0;
1351 :
1352 0 : if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1353 0 : p = "MESSAGE=System is powering down.";
1354 0 : q = "SHUTDOWN=power-off";
1355 0 : } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1356 0 : p = "MESSAGE=System is halting.";
1357 0 : q = "SHUTDOWN=halt";
1358 0 : } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1359 0 : p = "MESSAGE=System is rebooting.";
1360 0 : q = "SHUTDOWN=reboot";
1361 0 : } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1362 0 : p = "MESSAGE=System is rebooting with kexec.";
1363 0 : q = "SHUTDOWN=kexec";
1364 : } else {
1365 0 : p = "MESSAGE=System is shutting down.";
1366 0 : q = NULL;
1367 : }
1368 :
1369 0 : return log_struct(LOG_NOTICE,
1370 : LOG_MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
1371 : p,
1372 : q,
1373 : NULL);
1374 : }
1375 :
1376 0 : static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1377 0 : Manager *m = userdata;
1378 :
1379 0 : assert(e);
1380 0 : assert(m);
1381 :
1382 0 : m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1383 0 : return 0;
1384 : }
1385 :
1386 0 : int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1387 : int r;
1388 :
1389 0 : assert(m);
1390 :
1391 0 : if (until <= now(CLOCK_MONOTONIC))
1392 0 : return 0;
1393 :
1394 : /* We want to ignore the lid switch for a while after each
1395 : * suspend, and after boot-up. Hence let's install a timer for
1396 : * this. As long as the event source exists we ignore the lid
1397 : * switch. */
1398 :
1399 0 : if (m->lid_switch_ignore_event_source) {
1400 : usec_t u;
1401 :
1402 0 : r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1403 0 : if (r < 0)
1404 0 : return r;
1405 :
1406 0 : if (until <= u)
1407 0 : return 0;
1408 :
1409 0 : r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1410 : } else
1411 0 : r = sd_event_add_time(
1412 : m->event,
1413 : &m->lid_switch_ignore_event_source,
1414 : CLOCK_MONOTONIC,
1415 : until, 0,
1416 : lid_switch_ignore_handler, m);
1417 :
1418 0 : return r;
1419 : }
1420 :
1421 0 : static int execute_shutdown_or_sleep(
1422 : Manager *m,
1423 : InhibitWhat w,
1424 : const char *unit_name,
1425 : sd_bus_error *error) {
1426 :
1427 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1428 : const char *p;
1429 : char *c;
1430 : int r;
1431 :
1432 0 : assert(m);
1433 0 : assert(w >= 0);
1434 0 : assert(w < _INHIBIT_WHAT_MAX);
1435 0 : assert(unit_name);
1436 :
1437 0 : bus_manager_log_shutdown(m, w, unit_name);
1438 :
1439 0 : r = sd_bus_call_method(
1440 : m->bus,
1441 : "org.freedesktop.systemd1",
1442 : "/org/freedesktop/systemd1",
1443 : "org.freedesktop.systemd1.Manager",
1444 : "StartUnit",
1445 : error,
1446 : &reply,
1447 : "ss", unit_name, "replace-irreversibly");
1448 0 : if (r < 0)
1449 0 : return r;
1450 :
1451 0 : r = sd_bus_message_read(reply, "o", &p);
1452 0 : if (r < 0)
1453 0 : return r;
1454 :
1455 0 : c = strdup(p);
1456 0 : if (!c)
1457 0 : return -ENOMEM;
1458 :
1459 0 : m->action_unit = unit_name;
1460 0 : free(m->action_job);
1461 0 : m->action_job = c;
1462 0 : m->action_what = w;
1463 :
1464 : /* Make sure the lid switch is ignored for a while */
1465 0 : manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec);
1466 :
1467 0 : return 0;
1468 : }
1469 :
1470 0 : int manager_dispatch_delayed(Manager *manager, bool timeout) {
1471 :
1472 0 : _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1473 0 : Inhibitor *offending = NULL;
1474 : int r;
1475 :
1476 0 : assert(manager);
1477 :
1478 0 : if (manager->action_what == 0 || manager->action_job)
1479 0 : return 0;
1480 :
1481 0 : if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1482 0 : _cleanup_free_ char *comm = NULL, *u = NULL;
1483 :
1484 0 : if (!timeout)
1485 0 : return 0;
1486 :
1487 0 : (void) get_process_comm(offending->pid, &comm);
1488 0 : u = uid_to_name(offending->uid);
1489 :
1490 0 : log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1491 : offending->uid, strna(u),
1492 : offending->pid, strna(comm));
1493 : }
1494 :
1495 : /* Actually do the operation */
1496 0 : r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1497 0 : if (r < 0) {
1498 0 : log_warning("Failed to send delayed message: %s", bus_error_message(&error, r));
1499 :
1500 0 : manager->action_unit = NULL;
1501 0 : manager->action_what = 0;
1502 0 : return r;
1503 : }
1504 :
1505 0 : return 1;
1506 : }
1507 :
1508 0 : static int manager_inhibit_timeout_handler(
1509 : sd_event_source *s,
1510 : uint64_t usec,
1511 : void *userdata) {
1512 :
1513 0 : Manager *manager = userdata;
1514 : int r;
1515 :
1516 0 : assert(manager);
1517 0 : assert(manager->inhibit_timeout_source == s);
1518 :
1519 0 : r = manager_dispatch_delayed(manager, true);
1520 0 : return (r < 0) ? r : 0;
1521 : }
1522 :
1523 0 : static int delay_shutdown_or_sleep(
1524 : Manager *m,
1525 : InhibitWhat w,
1526 : const char *unit_name) {
1527 :
1528 : int r;
1529 : usec_t timeout_val;
1530 :
1531 0 : assert(m);
1532 0 : assert(w >= 0);
1533 0 : assert(w < _INHIBIT_WHAT_MAX);
1534 0 : assert(unit_name);
1535 :
1536 0 : timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max;
1537 :
1538 0 : if (m->inhibit_timeout_source) {
1539 0 : r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val);
1540 0 : if (r < 0)
1541 0 : return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1542 :
1543 0 : r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1544 0 : if (r < 0)
1545 0 : return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1546 : } else {
1547 0 : r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC,
1548 : timeout_val, 0, manager_inhibit_timeout_handler, m);
1549 0 : if (r < 0)
1550 0 : return r;
1551 : }
1552 :
1553 0 : m->action_unit = unit_name;
1554 0 : m->action_what = w;
1555 :
1556 0 : return 0;
1557 : }
1558 :
1559 0 : static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1560 :
1561 : static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
1562 : [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
1563 : [INHIBIT_SLEEP] = "PrepareForSleep"
1564 : };
1565 :
1566 0 : int active = _active;
1567 :
1568 0 : assert(m);
1569 0 : assert(w >= 0);
1570 0 : assert(w < _INHIBIT_WHAT_MAX);
1571 0 : assert(signal_name[w]);
1572 :
1573 0 : return sd_bus_emit_signal(m->bus,
1574 : "/org/freedesktop/login1",
1575 : "org.freedesktop.login1.Manager",
1576 : signal_name[w],
1577 : "b",
1578 : active);
1579 : }
1580 :
1581 0 : int bus_manager_shutdown_or_sleep_now_or_later(
1582 : Manager *m,
1583 : const char *unit_name,
1584 : InhibitWhat w,
1585 : sd_bus_error *error) {
1586 :
1587 : bool delayed;
1588 : int r;
1589 :
1590 0 : assert(m);
1591 0 : assert(unit_name);
1592 0 : assert(w >= 0);
1593 0 : assert(w <= _INHIBIT_WHAT_MAX);
1594 0 : assert(!m->action_job);
1595 :
1596 : /* Tell everybody to prepare for shutdown/sleep */
1597 0 : send_prepare_for(m, w, true);
1598 :
1599 0 : delayed =
1600 0 : m->inhibit_delay_max > 0 &&
1601 0 : manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1602 :
1603 0 : if (delayed)
1604 : /* Shutdown is delayed, keep in mind what we
1605 : * want to do, and start a timeout */
1606 0 : r = delay_shutdown_or_sleep(m, w, unit_name);
1607 : else
1608 : /* Shutdown is not delayed, execute it
1609 : * immediately */
1610 0 : r = execute_shutdown_or_sleep(m, w, unit_name, error);
1611 :
1612 0 : return r;
1613 : }
1614 :
1615 0 : static int verify_shutdown_creds(
1616 : Manager *m,
1617 : sd_bus_message *message,
1618 : InhibitWhat w,
1619 : bool interactive,
1620 : const char *action,
1621 : const char *action_multiple_sessions,
1622 : const char *action_ignore_inhibit,
1623 : sd_bus_error *error) {
1624 :
1625 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
1626 : bool multiple_sessions, blocked;
1627 : uid_t uid;
1628 : int r;
1629 :
1630 0 : assert(m);
1631 0 : assert(message);
1632 0 : assert(w >= 0);
1633 0 : assert(w <= _INHIBIT_WHAT_MAX);
1634 :
1635 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1636 0 : if (r < 0)
1637 0 : return r;
1638 :
1639 0 : r = sd_bus_creds_get_euid(creds, &uid);
1640 0 : if (r < 0)
1641 0 : return r;
1642 :
1643 0 : r = have_multiple_sessions(m, uid);
1644 0 : if (r < 0)
1645 0 : return r;
1646 :
1647 0 : multiple_sessions = r > 0;
1648 0 : blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1649 :
1650 0 : if (multiple_sessions && action_multiple_sessions) {
1651 0 : r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, interactive, UID_INVALID, &m->polkit_registry, error);
1652 0 : if (r < 0)
1653 0 : return r;
1654 0 : if (r == 0)
1655 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1656 : }
1657 :
1658 0 : if (blocked && action_ignore_inhibit) {
1659 0 : r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, interactive, UID_INVALID, &m->polkit_registry, error);
1660 0 : if (r < 0)
1661 0 : return r;
1662 0 : if (r == 0)
1663 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1664 : }
1665 :
1666 0 : if (!multiple_sessions && !blocked && action) {
1667 0 : r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, interactive, UID_INVALID, &m->polkit_registry, error);
1668 0 : if (r < 0)
1669 0 : return r;
1670 0 : if (r == 0)
1671 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1672 : }
1673 :
1674 0 : return 0;
1675 : }
1676 :
1677 0 : static int method_do_shutdown_or_sleep(
1678 : Manager *m,
1679 : sd_bus_message *message,
1680 : const char *unit_name,
1681 : InhibitWhat w,
1682 : const char *action,
1683 : const char *action_multiple_sessions,
1684 : const char *action_ignore_inhibit,
1685 : const char *sleep_verb,
1686 : sd_bus_error *error) {
1687 :
1688 : int interactive, r;
1689 :
1690 0 : assert(m);
1691 0 : assert(message);
1692 0 : assert(unit_name);
1693 0 : assert(w >= 0);
1694 0 : assert(w <= _INHIBIT_WHAT_MAX);
1695 :
1696 0 : r = sd_bus_message_read(message, "b", &interactive);
1697 0 : if (r < 0)
1698 0 : return r;
1699 :
1700 : /* Don't allow multiple jobs being executed at the same time */
1701 0 : if (m->action_what)
1702 0 : return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");
1703 :
1704 0 : if (sleep_verb) {
1705 0 : r = can_sleep(sleep_verb);
1706 0 : if (r < 0)
1707 0 : return r;
1708 :
1709 0 : if (r == 0)
1710 0 : return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
1711 : }
1712 :
1713 0 : r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1714 : action_ignore_inhibit, error);
1715 0 : if (r != 0)
1716 0 : return r;
1717 :
1718 0 : r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1719 0 : if (r < 0)
1720 0 : return r;
1721 :
1722 0 : return sd_bus_reply_method_return(message, NULL);
1723 : }
1724 :
1725 0 : static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1726 0 : Manager *m = userdata;
1727 :
1728 0 : return method_do_shutdown_or_sleep(
1729 : m, message,
1730 : SPECIAL_POWEROFF_TARGET,
1731 : INHIBIT_SHUTDOWN,
1732 : "org.freedesktop.login1.power-off",
1733 : "org.freedesktop.login1.power-off-multiple-sessions",
1734 : "org.freedesktop.login1.power-off-ignore-inhibit",
1735 : NULL,
1736 : error);
1737 : }
1738 :
1739 0 : static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1740 0 : Manager *m = userdata;
1741 :
1742 0 : return method_do_shutdown_or_sleep(
1743 : m, message,
1744 : SPECIAL_REBOOT_TARGET,
1745 : INHIBIT_SHUTDOWN,
1746 : "org.freedesktop.login1.reboot",
1747 : "org.freedesktop.login1.reboot-multiple-sessions",
1748 : "org.freedesktop.login1.reboot-ignore-inhibit",
1749 : NULL,
1750 : error);
1751 : }
1752 :
1753 0 : static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1754 0 : Manager *m = userdata;
1755 :
1756 0 : return method_do_shutdown_or_sleep(
1757 : m, message,
1758 : SPECIAL_SUSPEND_TARGET,
1759 : INHIBIT_SLEEP,
1760 : "org.freedesktop.login1.suspend",
1761 : "org.freedesktop.login1.suspend-multiple-sessions",
1762 : "org.freedesktop.login1.suspend-ignore-inhibit",
1763 : "suspend",
1764 : error);
1765 : }
1766 :
1767 0 : static int nologin_timeout_handler(
1768 : sd_event_source *s,
1769 : uint64_t usec,
1770 : void *userdata) {
1771 :
1772 0 : Manager *m = userdata;
1773 : int r;
1774 :
1775 0 : log_info("Creating /run/nologin, blocking further logins...");
1776 :
1777 0 : r = write_string_file("/run/nologin", "System is going down.", WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC);
1778 0 : if (r < 0)
1779 0 : log_error_errno(r, "Failed to create /run/nologin: %m");
1780 : else
1781 0 : m->unlink_nologin = true;
1782 :
1783 0 : return 0;
1784 : }
1785 :
1786 0 : static int update_schedule_file(Manager *m) {
1787 :
1788 : int r;
1789 0 : _cleanup_fclose_ FILE *f = NULL;
1790 0 : _cleanup_free_ char *t = NULL, *temp_path = NULL;
1791 :
1792 0 : assert(m);
1793 :
1794 0 : r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0);
1795 0 : if (r < 0)
1796 0 : return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
1797 :
1798 0 : t = cescape(m->wall_message);
1799 0 : if (!t)
1800 0 : return log_oom();
1801 :
1802 0 : r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
1803 0 : if (r < 0)
1804 0 : return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
1805 :
1806 0 : (void) fchmod(fileno(f), 0644);
1807 :
1808 0 : fprintf(f,
1809 : "USEC="USEC_FMT"\n"
1810 : "WARN_WALL=%i\n"
1811 : "MODE=%s\n",
1812 : m->scheduled_shutdown_timeout,
1813 : m->enable_wall_messages,
1814 : m->scheduled_shutdown_type);
1815 :
1816 0 : if (!isempty(m->wall_message))
1817 0 : fprintf(f, "WALL_MESSAGE=%s\n", t);
1818 :
1819 0 : (void) fflush_and_check(f);
1820 :
1821 0 : if (ferror(f) || rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
1822 0 : log_error_errno(errno, "Failed to write information about scheduled shutdowns: %m");
1823 0 : r = -errno;
1824 :
1825 0 : (void) unlink(temp_path);
1826 0 : (void) unlink("/run/systemd/shutdown/scheduled");
1827 : }
1828 :
1829 0 : return r;
1830 : }
1831 :
1832 0 : static int manager_scheduled_shutdown_handler(
1833 : sd_event_source *s,
1834 : uint64_t usec,
1835 : void *userdata) {
1836 :
1837 0 : _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1838 0 : Manager *m = userdata;
1839 : const char *target;
1840 : int r;
1841 :
1842 0 : assert(m);
1843 :
1844 0 : if (isempty(m->scheduled_shutdown_type))
1845 0 : return 0;
1846 :
1847 0 : if (streq(m->scheduled_shutdown_type, "halt"))
1848 0 : target = SPECIAL_HALT_TARGET;
1849 0 : else if (streq(m->scheduled_shutdown_type, "poweroff"))
1850 0 : target = SPECIAL_POWEROFF_TARGET;
1851 : else
1852 0 : target = SPECIAL_REBOOT_TARGET;
1853 :
1854 0 : r = execute_shutdown_or_sleep(m, 0, target, &error);
1855 0 : if (r < 0)
1856 0 : return log_error_errno(r, "Unable to execute transition to %s: %m", target);
1857 :
1858 0 : return 0;
1859 : }
1860 :
1861 0 : static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1862 0 : Manager *m = userdata;
1863 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
1864 0 : const char *action_multiple_sessions = NULL;
1865 0 : const char *action_ignore_inhibit = NULL;
1866 0 : const char *action = NULL;
1867 : uint64_t elapse;
1868 : char *type;
1869 : int r;
1870 :
1871 0 : assert(m);
1872 0 : assert(message);
1873 :
1874 0 : r = sd_bus_message_read(message, "st", &type, &elapse);
1875 0 : if (r < 0)
1876 0 : return r;
1877 :
1878 0 : if (streq(type, "reboot")) {
1879 0 : action = "org.freedesktop.login1.reboot";
1880 0 : action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
1881 0 : action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
1882 0 : } else if (streq(type, "halt")) {
1883 0 : action = "org.freedesktop.login1.halt";
1884 0 : action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
1885 0 : action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
1886 0 : } else if (streq(type, "poweroff")) {
1887 0 : action = "org.freedesktop.login1.poweroff";
1888 0 : action_multiple_sessions = "org.freedesktop.login1.poweroff-multiple-sessions";
1889 0 : action_ignore_inhibit = "org.freedesktop.login1.poweroff-ignore-inhibit";
1890 : } else
1891 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
1892 :
1893 0 : r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false,
1894 : action, action_multiple_sessions, action_ignore_inhibit, error);
1895 0 : if (r != 0)
1896 0 : return r;
1897 :
1898 0 : if (m->scheduled_shutdown_timeout_source) {
1899 0 : r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
1900 0 : if (r < 0)
1901 0 : return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1902 :
1903 0 : r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
1904 0 : if (r < 0)
1905 0 : return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1906 : } else {
1907 0 : r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
1908 : CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
1909 0 : if (r < 0)
1910 0 : return log_error_errno(r, "sd_event_add_time() failed: %m");
1911 : }
1912 :
1913 0 : r = free_and_strdup(&m->scheduled_shutdown_type, type);
1914 0 : if (r < 0) {
1915 0 : m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
1916 0 : return log_oom();
1917 : }
1918 :
1919 0 : if (m->nologin_timeout_source) {
1920 0 : r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
1921 0 : if (r < 0)
1922 0 : return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1923 :
1924 0 : r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
1925 0 : if (r < 0)
1926 0 : return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1927 : } else {
1928 0 : r = sd_event_add_time(m->event, &m->nologin_timeout_source,
1929 0 : CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
1930 0 : if (r < 0)
1931 0 : return log_error_errno(r, "sd_event_add_time() failed: %m");
1932 : }
1933 :
1934 0 : m->scheduled_shutdown_timeout = elapse;
1935 :
1936 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
1937 0 : if (r >= 0) {
1938 : const char *tty;
1939 :
1940 0 : (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
1941 0 : (void) sd_bus_creds_get_tty(creds, &tty);
1942 :
1943 0 : r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
1944 0 : if (r < 0) {
1945 0 : m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
1946 0 : return log_oom();
1947 : }
1948 : }
1949 :
1950 0 : r = manager_setup_wall_message_timer(m);
1951 0 : if (r < 0)
1952 0 : return r;
1953 :
1954 0 : if (!isempty(type)) {
1955 0 : r = update_schedule_file(m);
1956 0 : if (r < 0)
1957 0 : return r;
1958 : } else
1959 0 : (void) unlink("/run/systemd/shutdown/scheduled");
1960 :
1961 0 : return sd_bus_reply_method_return(message, NULL);
1962 : }
1963 :
1964 0 : static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1965 0 : Manager *m = userdata;
1966 : bool cancelled;
1967 :
1968 0 : assert(m);
1969 0 : assert(message);
1970 :
1971 0 : cancelled = m->scheduled_shutdown_type != NULL;
1972 :
1973 0 : m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
1974 0 : m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
1975 0 : m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
1976 0 : free(m->scheduled_shutdown_type);
1977 0 : m->scheduled_shutdown_type = NULL;
1978 0 : m->scheduled_shutdown_timeout = 0;
1979 :
1980 0 : if (m->unlink_nologin) {
1981 0 : (void) unlink("/run/nologin");
1982 0 : m->unlink_nologin = false;
1983 : }
1984 :
1985 0 : if (cancelled) {
1986 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
1987 0 : const char *tty = NULL;
1988 0 : uid_t uid = 0;
1989 : int r;
1990 :
1991 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
1992 0 : if (r >= 0) {
1993 0 : (void) sd_bus_creds_get_uid(creds, &uid);
1994 0 : (void) sd_bus_creds_get_tty(creds, &tty);
1995 : }
1996 :
1997 0 : utmp_wall("The system shutdown has been cancelled",
1998 0 : lookup_uid(uid), tty, logind_wall_tty_filter, m);
1999 : }
2000 :
2001 0 : return sd_bus_reply_method_return(message, "b", cancelled);
2002 : }
2003 :
2004 0 : static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2005 0 : Manager *m = userdata;
2006 :
2007 0 : return method_do_shutdown_or_sleep(
2008 : m, message,
2009 : SPECIAL_HIBERNATE_TARGET,
2010 : INHIBIT_SLEEP,
2011 : "org.freedesktop.login1.hibernate",
2012 : "org.freedesktop.login1.hibernate-multiple-sessions",
2013 : "org.freedesktop.login1.hibernate-ignore-inhibit",
2014 : "hibernate",
2015 : error);
2016 : }
2017 :
2018 0 : static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2019 0 : Manager *m = userdata;
2020 :
2021 0 : return method_do_shutdown_or_sleep(
2022 : m, message,
2023 : SPECIAL_HYBRID_SLEEP_TARGET,
2024 : INHIBIT_SLEEP,
2025 : "org.freedesktop.login1.hibernate",
2026 : "org.freedesktop.login1.hibernate-multiple-sessions",
2027 : "org.freedesktop.login1.hibernate-ignore-inhibit",
2028 : "hybrid-sleep",
2029 : error);
2030 : }
2031 :
2032 0 : static int method_can_shutdown_or_sleep(
2033 : Manager *m,
2034 : sd_bus_message *message,
2035 : InhibitWhat w,
2036 : const char *action,
2037 : const char *action_multiple_sessions,
2038 : const char *action_ignore_inhibit,
2039 : const char *sleep_verb,
2040 : sd_bus_error *error) {
2041 :
2042 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
2043 : bool multiple_sessions, challenge, blocked;
2044 0 : const char *result = NULL;
2045 : uid_t uid;
2046 : int r;
2047 :
2048 0 : assert(m);
2049 0 : assert(message);
2050 0 : assert(w >= 0);
2051 0 : assert(w <= _INHIBIT_WHAT_MAX);
2052 0 : assert(action);
2053 0 : assert(action_multiple_sessions);
2054 0 : assert(action_ignore_inhibit);
2055 :
2056 0 : if (sleep_verb) {
2057 0 : r = can_sleep(sleep_verb);
2058 0 : if (r < 0)
2059 0 : return r;
2060 0 : if (r == 0)
2061 0 : return sd_bus_reply_method_return(message, "s", "na");
2062 : }
2063 :
2064 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2065 0 : if (r < 0)
2066 0 : return r;
2067 :
2068 0 : r = sd_bus_creds_get_euid(creds, &uid);
2069 0 : if (r < 0)
2070 0 : return r;
2071 :
2072 0 : r = have_multiple_sessions(m, uid);
2073 0 : if (r < 0)
2074 0 : return r;
2075 :
2076 0 : multiple_sessions = r > 0;
2077 0 : blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2078 :
2079 0 : if (multiple_sessions) {
2080 0 : r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, UID_INVALID, &challenge, error);
2081 0 : if (r < 0)
2082 0 : return r;
2083 :
2084 0 : if (r > 0)
2085 0 : result = "yes";
2086 0 : else if (challenge)
2087 0 : result = "challenge";
2088 : else
2089 0 : result = "no";
2090 : }
2091 :
2092 0 : if (blocked) {
2093 0 : r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, UID_INVALID, &challenge, error);
2094 0 : if (r < 0)
2095 0 : return r;
2096 :
2097 0 : if (r > 0 && !result)
2098 0 : result = "yes";
2099 0 : else if (challenge && (!result || streq(result, "yes")))
2100 0 : result = "challenge";
2101 : else
2102 0 : result = "no";
2103 : }
2104 :
2105 0 : if (!multiple_sessions && !blocked) {
2106 : /* If neither inhibit nor multiple sessions
2107 : * apply then just check the normal policy */
2108 :
2109 0 : r = bus_test_polkit(message, CAP_SYS_BOOT, action, UID_INVALID, &challenge, error);
2110 0 : if (r < 0)
2111 0 : return r;
2112 :
2113 0 : if (r > 0)
2114 0 : result = "yes";
2115 0 : else if (challenge)
2116 0 : result = "challenge";
2117 : else
2118 0 : result = "no";
2119 : }
2120 :
2121 0 : return sd_bus_reply_method_return(message, "s", result);
2122 : }
2123 :
2124 0 : static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2125 0 : Manager *m = userdata;
2126 :
2127 0 : return method_can_shutdown_or_sleep(
2128 : m, message,
2129 : INHIBIT_SHUTDOWN,
2130 : "org.freedesktop.login1.power-off",
2131 : "org.freedesktop.login1.power-off-multiple-sessions",
2132 : "org.freedesktop.login1.power-off-ignore-inhibit",
2133 : NULL,
2134 : error);
2135 : }
2136 :
2137 0 : static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2138 0 : Manager *m = userdata;
2139 :
2140 0 : return method_can_shutdown_or_sleep(
2141 : m, message,
2142 : INHIBIT_SHUTDOWN,
2143 : "org.freedesktop.login1.reboot",
2144 : "org.freedesktop.login1.reboot-multiple-sessions",
2145 : "org.freedesktop.login1.reboot-ignore-inhibit",
2146 : NULL,
2147 : error);
2148 : }
2149 :
2150 0 : static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2151 0 : Manager *m = userdata;
2152 :
2153 0 : return method_can_shutdown_or_sleep(
2154 : m, message,
2155 : INHIBIT_SLEEP,
2156 : "org.freedesktop.login1.suspend",
2157 : "org.freedesktop.login1.suspend-multiple-sessions",
2158 : "org.freedesktop.login1.suspend-ignore-inhibit",
2159 : "suspend",
2160 : error);
2161 : }
2162 :
2163 0 : static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2164 0 : Manager *m = userdata;
2165 :
2166 0 : return method_can_shutdown_or_sleep(
2167 : m, message,
2168 : INHIBIT_SLEEP,
2169 : "org.freedesktop.login1.hibernate",
2170 : "org.freedesktop.login1.hibernate-multiple-sessions",
2171 : "org.freedesktop.login1.hibernate-ignore-inhibit",
2172 : "hibernate",
2173 : error);
2174 : }
2175 :
2176 0 : static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2177 0 : Manager *m = userdata;
2178 :
2179 0 : return method_can_shutdown_or_sleep(
2180 : m, message,
2181 : INHIBIT_SLEEP,
2182 : "org.freedesktop.login1.hibernate",
2183 : "org.freedesktop.login1.hibernate-multiple-sessions",
2184 : "org.freedesktop.login1.hibernate-ignore-inhibit",
2185 : "hybrid-sleep",
2186 : error);
2187 : }
2188 :
2189 0 : static int property_get_reboot_to_firmware_setup(
2190 : sd_bus *bus,
2191 : const char *path,
2192 : const char *interface,
2193 : const char *property,
2194 : sd_bus_message *reply,
2195 : void *userdata,
2196 : sd_bus_error *error) {
2197 : int r;
2198 :
2199 0 : assert(bus);
2200 0 : assert(reply);
2201 0 : assert(userdata);
2202 :
2203 0 : r = efi_get_reboot_to_firmware();
2204 0 : if (r < 0 && r != -EOPNOTSUPP)
2205 0 : return r;
2206 :
2207 0 : return sd_bus_message_append(reply, "b", r > 0);
2208 : }
2209 :
2210 0 : static int method_set_reboot_to_firmware_setup(
2211 : sd_bus_message *message,
2212 : void *userdata,
2213 : sd_bus_error *error) {
2214 :
2215 : int b, r;
2216 0 : Manager *m = userdata;
2217 :
2218 0 : assert(message);
2219 0 : assert(m);
2220 :
2221 0 : r = sd_bus_message_read(message, "b", &b);
2222 0 : if (r < 0)
2223 0 : return r;
2224 :
2225 0 : r = bus_verify_polkit_async(message,
2226 : CAP_SYS_ADMIN,
2227 : "org.freedesktop.login1.set-reboot-to-firmware-setup",
2228 : false,
2229 : UID_INVALID,
2230 : &m->polkit_registry,
2231 : error);
2232 0 : if (r < 0)
2233 0 : return r;
2234 0 : if (r == 0)
2235 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2236 :
2237 0 : r = efi_set_reboot_to_firmware(b);
2238 0 : if (r < 0)
2239 0 : return r;
2240 :
2241 0 : return sd_bus_reply_method_return(message, NULL);
2242 : }
2243 :
2244 0 : static int method_can_reboot_to_firmware_setup(
2245 : sd_bus_message *message,
2246 : void *userdata,
2247 : sd_bus_error *error) {
2248 :
2249 : int r;
2250 : bool challenge;
2251 : const char *result;
2252 0 : Manager *m = userdata;
2253 :
2254 0 : assert(message);
2255 0 : assert(m);
2256 :
2257 0 : r = efi_reboot_to_firmware_supported();
2258 0 : if (r == -EOPNOTSUPP)
2259 0 : return sd_bus_reply_method_return(message, "s", "na");
2260 0 : else if (r < 0)
2261 0 : return r;
2262 :
2263 0 : r = bus_test_polkit(message,
2264 : CAP_SYS_ADMIN,
2265 : "org.freedesktop.login1.set-reboot-to-firmware-setup",
2266 : UID_INVALID,
2267 : &challenge,
2268 : error);
2269 0 : if (r < 0)
2270 0 : return r;
2271 :
2272 0 : if (r > 0)
2273 0 : result = "yes";
2274 0 : else if (challenge)
2275 0 : result = "challenge";
2276 : else
2277 0 : result = "no";
2278 :
2279 0 : return sd_bus_reply_method_return(message, "s", result);
2280 : }
2281 :
2282 0 : static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2283 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
2284 : const char *who, *why, *what, *mode;
2285 0 : _cleanup_free_ char *id = NULL;
2286 0 : _cleanup_close_ int fifo_fd = -1;
2287 0 : Manager *m = userdata;
2288 0 : Inhibitor *i = NULL;
2289 : InhibitMode mm;
2290 : InhibitWhat w;
2291 : pid_t pid;
2292 : uid_t uid;
2293 : int r;
2294 :
2295 0 : assert(message);
2296 0 : assert(m);
2297 :
2298 0 : r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
2299 0 : if (r < 0)
2300 0 : return r;
2301 :
2302 0 : w = inhibit_what_from_string(what);
2303 0 : if (w <= 0)
2304 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what);
2305 :
2306 0 : mm = inhibit_mode_from_string(mode);
2307 0 : if (mm < 0)
2308 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode);
2309 :
2310 : /* Delay is only supported for shutdown/sleep */
2311 0 : if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
2312 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep");
2313 :
2314 : /* Don't allow taking delay locks while we are already
2315 : * executing the operation. We shouldn't create the impression
2316 : * that the lock was successful if the machine is about to go
2317 : * down/suspend any moment. */
2318 0 : if (m->action_what & w)
2319 0 : return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running");
2320 :
2321 0 : r = bus_verify_polkit_async(
2322 : message,
2323 : CAP_SYS_BOOT,
2324 0 : w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
2325 0 : w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") :
2326 0 : w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" :
2327 0 : w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" :
2328 0 : w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
2329 0 : w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
2330 : "org.freedesktop.login1.inhibit-handle-lid-switch",
2331 : false,
2332 : UID_INVALID,
2333 : &m->polkit_registry,
2334 : error);
2335 0 : if (r < 0)
2336 0 : return r;
2337 0 : if (r == 0)
2338 0 : return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2339 :
2340 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
2341 0 : if (r < 0)
2342 0 : return r;
2343 :
2344 0 : r = sd_bus_creds_get_euid(creds, &uid);
2345 0 : if (r < 0)
2346 0 : return r;
2347 :
2348 0 : r = sd_bus_creds_get_pid(creds, &pid);
2349 0 : if (r < 0)
2350 0 : return r;
2351 :
2352 : do {
2353 0 : free(id);
2354 0 : id = NULL;
2355 :
2356 0 : if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
2357 0 : return -ENOMEM;
2358 :
2359 0 : } while (hashmap_get(m->inhibitors, id));
2360 :
2361 0 : r = manager_add_inhibitor(m, id, &i);
2362 0 : if (r < 0)
2363 0 : return r;
2364 :
2365 0 : i->what = w;
2366 0 : i->mode = mm;
2367 0 : i->pid = pid;
2368 0 : i->uid = uid;
2369 0 : i->why = strdup(why);
2370 0 : i->who = strdup(who);
2371 :
2372 0 : if (!i->why || !i->who) {
2373 0 : r = -ENOMEM;
2374 0 : goto fail;
2375 : }
2376 :
2377 0 : fifo_fd = inhibitor_create_fifo(i);
2378 0 : if (fifo_fd < 0) {
2379 0 : r = fifo_fd;
2380 0 : goto fail;
2381 : }
2382 :
2383 0 : inhibitor_start(i);
2384 :
2385 0 : return sd_bus_reply_method_return(message, "h", fifo_fd);
2386 :
2387 : fail:
2388 0 : if (i)
2389 0 : inhibitor_free(i);
2390 :
2391 0 : return r;
2392 : }
2393 :
2394 : const sd_bus_vtable manager_vtable[] = {
2395 : SD_BUS_VTABLE_START(0),
2396 :
2397 : SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
2398 : SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
2399 :
2400 : SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
2401 : SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
2402 : SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
2403 : SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
2404 : SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2405 : SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2406 : SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2407 : SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2408 : SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2409 : SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2410 : SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
2411 : SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
2412 : SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
2413 : SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
2414 : SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
2415 : SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
2416 : SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2417 : SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
2418 : SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2419 : SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
2420 : SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
2421 : SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
2422 : SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
2423 :
2424 : SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
2425 : SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2426 : SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
2427 : SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2428 : SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2429 : SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2430 : SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED),
2431 : SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED),
2432 : SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED),
2433 : SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0),
2434 : SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),
2435 : SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2436 : SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2437 : SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2438 : SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2439 : SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2440 : SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2441 : SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED),
2442 : SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED),
2443 : SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2444 : SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED),
2445 : SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2446 : SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED),
2447 : SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED),
2448 : SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED),
2449 : SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2450 : SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2451 : SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2452 : SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2453 : SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2454 : SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2455 : SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2456 : SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2457 : SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2458 : SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2459 : SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2460 : SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2461 : SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
2462 : SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2463 : SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2464 :
2465 : SD_BUS_SIGNAL("SessionNew", "so", 0),
2466 : SD_BUS_SIGNAL("SessionRemoved", "so", 0),
2467 : SD_BUS_SIGNAL("UserNew", "uo", 0),
2468 : SD_BUS_SIGNAL("UserRemoved", "uo", 0),
2469 : SD_BUS_SIGNAL("SeatNew", "so", 0),
2470 : SD_BUS_SIGNAL("SeatRemoved", "so", 0),
2471 : SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),
2472 : SD_BUS_SIGNAL("PrepareForSleep", "b", 0),
2473 :
2474 : SD_BUS_VTABLE_END
2475 : };
2476 :
2477 0 : static int session_jobs_reply(Session *s, const char *unit, const char *result) {
2478 0 : int r = 0;
2479 :
2480 0 : assert(s);
2481 0 : assert(unit);
2482 :
2483 0 : if (!s->started)
2484 0 : return r;
2485 :
2486 0 : if (streq(result, "done"))
2487 0 : r = session_send_create_reply(s, NULL);
2488 : else {
2489 0 : _cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;
2490 :
2491 0 : sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
2492 0 : r = session_send_create_reply(s, &e);
2493 : }
2494 :
2495 0 : return r;
2496 : }
2497 :
2498 0 : int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2499 : const char *path, *result, *unit;
2500 0 : Manager *m = userdata;
2501 : Session *session;
2502 : uint32_t id;
2503 : User *user;
2504 : int r;
2505 :
2506 0 : assert(message);
2507 0 : assert(m);
2508 :
2509 0 : r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
2510 0 : if (r < 0) {
2511 0 : bus_log_parse_error(r);
2512 0 : return r;
2513 : }
2514 :
2515 0 : if (m->action_job && streq(m->action_job, path)) {
2516 0 : log_info("Operation finished.");
2517 :
2518 : /* Tell people that they now may take a lock again */
2519 0 : send_prepare_for(m, m->action_what, false);
2520 :
2521 0 : free(m->action_job);
2522 0 : m->action_job = NULL;
2523 0 : m->action_unit = NULL;
2524 0 : m->action_what = 0;
2525 0 : return 0;
2526 : }
2527 :
2528 0 : session = hashmap_get(m->session_units, unit);
2529 0 : if (session) {
2530 :
2531 0 : if (streq_ptr(path, session->scope_job)) {
2532 0 : free(session->scope_job);
2533 0 : session->scope_job = NULL;
2534 : }
2535 :
2536 0 : session_jobs_reply(session, unit, result);
2537 :
2538 0 : session_save(session);
2539 0 : user_save(session->user);
2540 0 : session_add_to_gc_queue(session);
2541 : }
2542 :
2543 0 : user = hashmap_get(m->user_units, unit);
2544 0 : if (user) {
2545 :
2546 0 : if (streq_ptr(path, user->service_job)) {
2547 0 : free(user->service_job);
2548 0 : user->service_job = NULL;
2549 : }
2550 :
2551 0 : if (streq_ptr(path, user->slice_job)) {
2552 0 : free(user->slice_job);
2553 0 : user->slice_job = NULL;
2554 : }
2555 :
2556 0 : LIST_FOREACH(sessions_by_user, session, user->sessions) {
2557 0 : session_jobs_reply(session, unit, result);
2558 : }
2559 :
2560 0 : user_save(user);
2561 0 : user_add_to_gc_queue(user);
2562 : }
2563 :
2564 0 : return 0;
2565 : }
2566 :
2567 0 : int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2568 : const char *path, *unit;
2569 0 : Manager *m = userdata;
2570 : Session *session;
2571 : User *user;
2572 : int r;
2573 :
2574 0 : assert(message);
2575 0 : assert(m);
2576 :
2577 0 : r = sd_bus_message_read(message, "so", &unit, &path);
2578 0 : if (r < 0) {
2579 0 : bus_log_parse_error(r);
2580 0 : return r;
2581 : }
2582 :
2583 0 : session = hashmap_get(m->session_units, unit);
2584 0 : if (session)
2585 0 : session_add_to_gc_queue(session);
2586 :
2587 0 : user = hashmap_get(m->user_units, unit);
2588 0 : if (user)
2589 0 : user_add_to_gc_queue(user);
2590 :
2591 0 : return 0;
2592 : }
2593 :
2594 0 : int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2595 0 : _cleanup_free_ char *unit = NULL;
2596 0 : Manager *m = userdata;
2597 : const char *path;
2598 : Session *session;
2599 : User *user;
2600 : int r;
2601 :
2602 0 : assert(message);
2603 0 : assert(m);
2604 :
2605 0 : path = sd_bus_message_get_path(message);
2606 0 : if (!path)
2607 0 : return 0;
2608 :
2609 0 : r = unit_name_from_dbus_path(path, &unit);
2610 0 : if (r == -EINVAL) /* not a unit */
2611 0 : return 0;
2612 0 : if (r < 0)
2613 0 : return r;
2614 :
2615 0 : session = hashmap_get(m->session_units, unit);
2616 0 : if (session)
2617 0 : session_add_to_gc_queue(session);
2618 :
2619 0 : user = hashmap_get(m->user_units, unit);
2620 0 : if (user)
2621 0 : user_add_to_gc_queue(user);
2622 :
2623 0 : return 0;
2624 : }
2625 :
2626 0 : int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2627 0 : Manager *m = userdata;
2628 : Session *session;
2629 : Iterator i;
2630 : int b, r;
2631 :
2632 0 : assert(message);
2633 0 : assert(m);
2634 :
2635 0 : r = sd_bus_message_read(message, "b", &b);
2636 0 : if (r < 0) {
2637 0 : bus_log_parse_error(r);
2638 0 : return r;
2639 : }
2640 :
2641 0 : if (b)
2642 0 : return 0;
2643 :
2644 : /* systemd finished reloading, let's recheck all our sessions */
2645 0 : log_debug("System manager has been reloaded, rechecking sessions...");
2646 :
2647 0 : HASHMAP_FOREACH(session, m->sessions, i)
2648 0 : session_add_to_gc_queue(session);
2649 :
2650 0 : return 0;
2651 : }
2652 :
2653 0 : int match_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2654 : const char *name, *old, *new;
2655 0 : Manager *m = userdata;
2656 : Session *session;
2657 : Iterator i;
2658 : int r;
2659 : char *key;
2660 :
2661 0 : assert(message);
2662 0 : assert(m);
2663 :
2664 0 : r = sd_bus_message_read(message, "sss", &name, &old, &new);
2665 0 : if (r < 0) {
2666 0 : bus_log_parse_error(r);
2667 0 : return r;
2668 : }
2669 :
2670 0 : if (isempty(old) || !isempty(new))
2671 0 : return 0;
2672 :
2673 0 : key = set_remove(m->busnames, (char*) old);
2674 0 : if (!key)
2675 0 : return 0;
2676 :
2677 : /* Drop all controllers owned by this name */
2678 :
2679 0 : free(key);
2680 :
2681 0 : HASHMAP_FOREACH(session, m->sessions, i)
2682 0 : if (session_is_controller(session, old))
2683 0 : session_drop_controller(session);
2684 :
2685 0 : return 0;
2686 : }
2687 :
2688 0 : int manager_send_changed(Manager *manager, const char *property, ...) {
2689 : char **l;
2690 :
2691 0 : assert(manager);
2692 :
2693 0 : l = strv_from_stdarg_alloca(property);
2694 :
2695 0 : return sd_bus_emit_properties_changed_strv(
2696 : manager->bus,
2697 : "/org/freedesktop/login1",
2698 : "org.freedesktop.login1.Manager",
2699 : l);
2700 : }
2701 :
2702 0 : int manager_start_scope(
2703 : Manager *manager,
2704 : const char *scope,
2705 : pid_t pid,
2706 : const char *slice,
2707 : const char *description,
2708 : const char *after, const char *after2,
2709 : sd_bus_error *error,
2710 : char **job) {
2711 :
2712 0 : _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
2713 : int r;
2714 :
2715 0 : assert(manager);
2716 0 : assert(scope);
2717 0 : assert(pid > 1);
2718 :
2719 0 : r = sd_bus_message_new_method_call(
2720 : manager->bus,
2721 : &m,
2722 : "org.freedesktop.systemd1",
2723 : "/org/freedesktop/systemd1",
2724 : "org.freedesktop.systemd1.Manager",
2725 : "StartTransientUnit");
2726 0 : if (r < 0)
2727 0 : return r;
2728 :
2729 0 : r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
2730 0 : if (r < 0)
2731 0 : return r;
2732 :
2733 0 : r = sd_bus_message_open_container(m, 'a', "(sv)");
2734 0 : if (r < 0)
2735 0 : return r;
2736 :
2737 0 : if (!isempty(slice)) {
2738 0 : r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
2739 0 : if (r < 0)
2740 0 : return r;
2741 : }
2742 :
2743 0 : if (!isempty(description)) {
2744 0 : r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
2745 0 : if (r < 0)
2746 0 : return r;
2747 : }
2748 :
2749 0 : if (!isempty(after)) {
2750 0 : r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
2751 0 : if (r < 0)
2752 0 : return r;
2753 : }
2754 :
2755 0 : if (!isempty(after2)) {
2756 0 : r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
2757 0 : if (r < 0)
2758 0 : return r;
2759 : }
2760 :
2761 : /* cgroup empty notification is not available in containers
2762 : * currently. To make this less problematic, let's shorten the
2763 : * stop timeout for sessions, so that we don't wait
2764 : * forever. */
2765 :
2766 : /* Make sure that the session shells are terminated with
2767 : * SIGHUP since bash and friends tend to ignore SIGTERM */
2768 0 : r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
2769 0 : if (r < 0)
2770 0 : return r;
2771 :
2772 0 : r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
2773 0 : if (r < 0)
2774 0 : return r;
2775 :
2776 0 : r = sd_bus_message_close_container(m);
2777 0 : if (r < 0)
2778 0 : return r;
2779 :
2780 0 : r = sd_bus_message_append(m, "a(sa(sv))", 0);
2781 0 : if (r < 0)
2782 0 : return r;
2783 :
2784 0 : r = sd_bus_call(manager->bus, m, 0, error, &reply);
2785 0 : if (r < 0)
2786 0 : return r;
2787 :
2788 0 : if (job) {
2789 : const char *j;
2790 : char *copy;
2791 :
2792 0 : r = sd_bus_message_read(reply, "o", &j);
2793 0 : if (r < 0)
2794 0 : return r;
2795 :
2796 0 : copy = strdup(j);
2797 0 : if (!copy)
2798 0 : return -ENOMEM;
2799 :
2800 0 : *job = copy;
2801 : }
2802 :
2803 0 : return 1;
2804 : }
2805 :
2806 0 : int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
2807 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2808 : int r;
2809 :
2810 0 : assert(manager);
2811 0 : assert(unit);
2812 :
2813 0 : r = sd_bus_call_method(
2814 : manager->bus,
2815 : "org.freedesktop.systemd1",
2816 : "/org/freedesktop/systemd1",
2817 : "org.freedesktop.systemd1.Manager",
2818 : "StartUnit",
2819 : error,
2820 : &reply,
2821 : "ss", unit, "fail");
2822 0 : if (r < 0)
2823 0 : return r;
2824 :
2825 0 : if (job) {
2826 : const char *j;
2827 : char *copy;
2828 :
2829 0 : r = sd_bus_message_read(reply, "o", &j);
2830 0 : if (r < 0)
2831 0 : return r;
2832 :
2833 0 : copy = strdup(j);
2834 0 : if (!copy)
2835 0 : return -ENOMEM;
2836 :
2837 0 : *job = copy;
2838 : }
2839 :
2840 0 : return 1;
2841 : }
2842 :
2843 0 : int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
2844 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2845 : int r;
2846 :
2847 0 : assert(manager);
2848 0 : assert(unit);
2849 :
2850 0 : r = sd_bus_call_method(
2851 : manager->bus,
2852 : "org.freedesktop.systemd1",
2853 : "/org/freedesktop/systemd1",
2854 : "org.freedesktop.systemd1.Manager",
2855 : "StopUnit",
2856 : error,
2857 : &reply,
2858 : "ss", unit, "fail");
2859 0 : if (r < 0) {
2860 0 : if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
2861 0 : sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
2862 :
2863 0 : if (job)
2864 0 : *job = NULL;
2865 :
2866 0 : sd_bus_error_free(error);
2867 0 : return 0;
2868 : }
2869 :
2870 0 : return r;
2871 : }
2872 :
2873 0 : if (job) {
2874 : const char *j;
2875 : char *copy;
2876 :
2877 0 : r = sd_bus_message_read(reply, "o", &j);
2878 0 : if (r < 0)
2879 0 : return r;
2880 :
2881 0 : copy = strdup(j);
2882 0 : if (!copy)
2883 0 : return -ENOMEM;
2884 :
2885 0 : *job = copy;
2886 : }
2887 :
2888 0 : return 1;
2889 : }
2890 :
2891 0 : int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) {
2892 0 : _cleanup_free_ char *path = NULL;
2893 : int r;
2894 :
2895 0 : assert(manager);
2896 0 : assert(scope);
2897 :
2898 0 : path = unit_dbus_path_from_name(scope);
2899 0 : if (!path)
2900 0 : return -ENOMEM;
2901 :
2902 0 : r = sd_bus_call_method(
2903 : manager->bus,
2904 : "org.freedesktop.systemd1",
2905 : path,
2906 : "org.freedesktop.systemd1.Scope",
2907 : "Abandon",
2908 : error,
2909 : NULL,
2910 : NULL);
2911 0 : if (r < 0) {
2912 0 : if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
2913 0 : sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) ||
2914 0 : sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) {
2915 0 : sd_bus_error_free(error);
2916 0 : return 0;
2917 : }
2918 :
2919 0 : return r;
2920 : }
2921 :
2922 0 : return 1;
2923 : }
2924 :
2925 0 : int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
2926 0 : assert(manager);
2927 0 : assert(unit);
2928 :
2929 0 : return sd_bus_call_method(
2930 : manager->bus,
2931 : "org.freedesktop.systemd1",
2932 : "/org/freedesktop/systemd1",
2933 : "org.freedesktop.systemd1.Manager",
2934 : "KillUnit",
2935 : error,
2936 : NULL,
2937 : "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
2938 : }
2939 :
2940 0 : int manager_unit_is_active(Manager *manager, const char *unit) {
2941 0 : _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2942 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2943 0 : _cleanup_free_ char *path = NULL;
2944 : const char *state;
2945 : int r;
2946 :
2947 0 : assert(manager);
2948 0 : assert(unit);
2949 :
2950 0 : path = unit_dbus_path_from_name(unit);
2951 0 : if (!path)
2952 0 : return -ENOMEM;
2953 :
2954 0 : r = sd_bus_get_property(
2955 : manager->bus,
2956 : "org.freedesktop.systemd1",
2957 : path,
2958 : "org.freedesktop.systemd1.Unit",
2959 : "ActiveState",
2960 : &error,
2961 : &reply,
2962 : "s");
2963 0 : if (r < 0) {
2964 : /* systemd might have droppped off momentarily, let's
2965 : * not make this an error */
2966 0 : if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
2967 0 : sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
2968 0 : return true;
2969 :
2970 : /* If the unit is already unloaded then it's not
2971 : * active */
2972 0 : if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
2973 0 : sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
2974 0 : return false;
2975 :
2976 0 : return r;
2977 : }
2978 :
2979 0 : r = sd_bus_message_read(reply, "s", &state);
2980 0 : if (r < 0)
2981 0 : return -EINVAL;
2982 :
2983 0 : return !streq(state, "inactive") && !streq(state, "failed");
2984 : }
2985 :
2986 0 : int manager_job_is_active(Manager *manager, const char *path) {
2987 0 : _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2988 0 : _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2989 : int r;
2990 :
2991 0 : assert(manager);
2992 0 : assert(path);
2993 :
2994 0 : r = sd_bus_get_property(
2995 : manager->bus,
2996 : "org.freedesktop.systemd1",
2997 : path,
2998 : "org.freedesktop.systemd1.Job",
2999 : "State",
3000 : &error,
3001 : &reply,
3002 : "s");
3003 0 : if (r < 0) {
3004 0 : if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3005 0 : sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3006 0 : return true;
3007 :
3008 0 : if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
3009 0 : return false;
3010 :
3011 0 : return r;
3012 : }
3013 :
3014 : /* We don't actually care about the state really. The fact
3015 : * that we could read the job state is enough for us */
3016 :
3017 0 : return true;
3018 : }
|
