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1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3 #include <errno.h>
4 #include <sys/stat.h>
5 #include <unistd.h>
6
7 #include "sd-device.h"
8 #include "sd-messages.h"
9
10 #include "alloc-util.h"
11 #include "audit-util.h"
12 #include "bootspec.h"
13 #include "bus-common-errors.h"
14 #include "bus-error.h"
15 #include "bus-get-properties.h"
16 #include "bus-locator.h"
17 #include "bus-polkit.h"
18 #include "bus-unit-util.h"
19 #include "bus-util.h"
20 #include "cgroup-util.h"
21 #include "device-util.h"
22 #include "dirent-util.h"
23 #include "efi-api.h"
24 #include "efi-loader.h"
25 #include "efivars.h"
26 #include "env-file.h"
27 #include "env-util.h"
28 #include "escape.h"
29 #include "event-util.h"
30 #include "fd-util.h"
31 #include "fileio-label.h"
32 #include "fileio.h"
33 #include "format-util.h"
34 #include "fs-util.h"
35 #include "logind-action.h"
36 #include "logind-dbus.h"
37 #include "logind-polkit.h"
38 #include "logind-seat-dbus.h"
39 #include "logind-session-dbus.h"
40 #include "logind-user-dbus.h"
41 #include "logind.h"
42 #include "missing_capability.h"
43 #include "mkdir-label.h"
44 #include "parse-util.h"
45 #include "path-util.h"
46 #include "process-util.h"
47 #include "reboot-util.h"
48 #include "selinux-util.h"
49 #include "sleep-config.h"
50 #include "special.h"
51 #include "serialize.h"
52 #include "stdio-util.h"
53 #include "strv.h"
54 #include "terminal-util.h"
55 #include "tmpfile-util.h"
56 #include "unit-name.h"
57 #include "user-util.h"
58 #include "utmp-wtmp.h"
59 #include "virt.h"
60 #include "wall.h"
61
62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
63 * character limit for the wall message.
64 * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
65 * There is no real technical need for that but doesn't make sense
66 * to store arbitrary amounts either. As we are not stingy here, we
67 * allow 4k.
68 */
69 #define WALL_MESSAGE_MAX 4096U
70
71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
72
73 static int update_schedule_file(Manager *m);
74 static void reset_scheduled_shutdown(Manager *m);
75 static int manager_setup_shutdown_timers(Manager* m);
76
77 static int get_sender_session(
78 Manager *m,
79 sd_bus_message *message,
80 bool consult_display,
81 sd_bus_error *error,
82 Session **ret) {
83
84 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
85 Session *session = NULL;
86 const char *name;
87 int r;
88
89 /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
90 * and returns that. If not and 'consult_display' is true, this returns the display session of the
91 * owning user of the caller. */
92
93 r = sd_bus_query_sender_creds(message,
94 SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
95 (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
96 if (r < 0)
97 return r;
98
99 r = sd_bus_creds_get_session(creds, &name);
100 if (r < 0) {
101 if (r != -ENXIO)
102 return r;
103
104 if (consult_display) {
105 uid_t uid;
106
107 r = sd_bus_creds_get_owner_uid(creds, &uid);
108 if (r < 0) {
109 if (r != -ENXIO)
110 return r;
111 } else {
112 User *user;
113
114 user = hashmap_get(m->users, UID_TO_PTR(uid));
115 if (user)
116 session = user->display;
117 }
118 }
119 } else
120 session = hashmap_get(m->sessions, name);
121
122 if (!session)
123 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
124 consult_display ?
125 "Caller does not belong to any known session and doesn't own any suitable session." :
126 "Caller does not belong to any known session.");
127
128 *ret = session;
129 return 0;
130 }
131
132 int manager_get_session_from_creds(
133 Manager *m,
134 sd_bus_message *message,
135 const char *name,
136 sd_bus_error *error,
137 Session **ret) {
138
139 Session *session;
140
141 assert(m);
142 assert(ret);
143
144 if (SESSION_IS_SELF(name)) /* the caller's own session */
145 return get_sender_session(m, message, false, error, ret);
146 if (SESSION_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
147 return get_sender_session(m, message, true, error, ret);
148
149 session = hashmap_get(m->sessions, name);
150 if (!session)
151 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
152
153 *ret = session;
154 return 0;
155 }
156
157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
158 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
159 uid_t uid;
160 User *user;
161 int r;
162
163 /* Note that we get the owner UID of the session, not the actual client UID here! */
164 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
165 if (r < 0)
166 return r;
167
168 r = sd_bus_creds_get_owner_uid(creds, &uid);
169 if (r < 0) {
170 if (r != -ENXIO)
171 return r;
172
173 user = NULL;
174 } else
175 user = hashmap_get(m->users, UID_TO_PTR(uid));
176
177 if (!user)
178 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
179 "Caller does not belong to any logged in or lingering user");
180
181 *ret = user;
182 return 0;
183 }
184
185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
186 User *user;
187
188 assert(m);
189 assert(ret);
190
191 if (!uid_is_valid(uid))
192 return get_sender_user(m, message, error, ret);
193
194 user = hashmap_get(m->users, UID_TO_PTR(uid));
195 if (!user)
196 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
197 "User ID "UID_FMT" is not logged in or lingering", uid);
198
199 *ret = user;
200 return 0;
201 }
202
203 int manager_get_seat_from_creds(
204 Manager *m,
205 sd_bus_message *message,
206 const char *name,
207 sd_bus_error *error,
208 Seat **ret) {
209
210 Seat *seat;
211 int r;
212
213 assert(m);
214 assert(ret);
215
216 if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
217 Session *session;
218
219 /* Use these special seat names as session names */
220 r = manager_get_session_from_creds(m, message, name, error, &session);
221 if (r < 0)
222 return r;
223
224 seat = session->seat;
225 if (!seat)
226 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
227 } else {
228 seat = hashmap_get(m->seats, name);
229 if (!seat)
230 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
231 }
232
233 *ret = seat;
234 return 0;
235 }
236
237 static int return_test_polkit(
238 sd_bus_message *message,
239 const char *action,
240 const char **details,
241 uid_t good_user,
242 sd_bus_error *e) {
243
244 const char *result;
245 bool challenge;
246 int r;
247
248 r = bus_test_polkit(message, action, details, good_user, &challenge, e);
249 if (r < 0)
250 return r;
251
252 if (r > 0)
253 result = "yes";
254 else if (challenge)
255 result = "challenge";
256 else
257 result = "no";
258
259 return sd_bus_reply_method_return(message, "s", result);
260 }
261
262 static int property_get_idle_hint(
263 sd_bus *bus,
264 const char *path,
265 const char *interface,
266 const char *property,
267 sd_bus_message *reply,
268 void *userdata,
269 sd_bus_error *error) {
270
271 Manager *m = ASSERT_PTR(userdata);
272
273 assert(bus);
274 assert(reply);
275
276 return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
277 }
278
279 static int property_get_idle_since_hint(
280 sd_bus *bus,
281 const char *path,
282 const char *interface,
283 const char *property,
284 sd_bus_message *reply,
285 void *userdata,
286 sd_bus_error *error) {
287
288 Manager *m = ASSERT_PTR(userdata);
289 dual_timestamp t = DUAL_TIMESTAMP_NULL;
290
291 assert(bus);
292 assert(reply);
293
294 manager_get_idle_hint(m, &t);
295
296 return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
297 }
298
299 static int property_get_inhibited(
300 sd_bus *bus,
301 const char *path,
302 const char *interface,
303 const char *property,
304 sd_bus_message *reply,
305 void *userdata,
306 sd_bus_error *error) {
307
308 Manager *m = ASSERT_PTR(userdata);
309 InhibitWhat w;
310
311 assert(bus);
312 assert(reply);
313
314 w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
315
316 return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
317 }
318
319 static int property_get_preparing(
320 sd_bus *bus,
321 const char *path,
322 const char *interface,
323 const char *property,
324 sd_bus_message *reply,
325 void *userdata,
326 sd_bus_error *error) {
327
328 Manager *m = ASSERT_PTR(userdata);
329 bool b = false;
330
331 assert(bus);
332 assert(reply);
333
334 if (m->delayed_action) {
335 if (streq(property, "PreparingForShutdown"))
336 b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
337 else
338 b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
339 }
340
341 return sd_bus_message_append(reply, "b", b);
342 }
343
344 static int property_get_sleep_operations(
345 sd_bus *bus,
346 const char *path,
347 const char *interface,
348 const char *property,
349 sd_bus_message *reply,
350 void *userdata,
351 sd_bus_error *error) {
352
353 Manager *m = ASSERT_PTR(userdata);
354 _cleanup_strv_free_ char **actions = NULL;
355 int r;
356
357 assert(bus);
358 assert(reply);
359
360 r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
361 if (r < 0)
362 return r;
363
364 return sd_bus_message_append_strv(reply, actions);
365 }
366
367 static int property_get_scheduled_shutdown(
368 sd_bus *bus,
369 const char *path,
370 const char *interface,
371 const char *property,
372 sd_bus_message *reply,
373 void *userdata,
374 sd_bus_error *error) {
375
376 Manager *m = ASSERT_PTR(userdata);
377 int r;
378
379 assert(bus);
380 assert(reply);
381
382 r = sd_bus_message_open_container(reply, 'r', "st");
383 if (r < 0)
384 return r;
385
386 r = sd_bus_message_append(
387 reply, "st",
388 handle_action_to_string(m->scheduled_shutdown_action),
389 m->scheduled_shutdown_timeout);
390 if (r < 0)
391 return r;
392
393 return sd_bus_message_close_container(reply);
394 }
395
396 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
397 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
398 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
399 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
401 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
402
403 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
404 _cleanup_free_ char *p = NULL;
405 Manager *m = ASSERT_PTR(userdata);
406 const char *name;
407 Session *session;
408 int r;
409
410 assert(message);
411
412 r = sd_bus_message_read(message, "s", &name);
413 if (r < 0)
414 return r;
415
416 r = manager_get_session_from_creds(m, message, name, error, &session);
417 if (r < 0)
418 return r;
419
420 p = session_bus_path(session);
421 if (!p)
422 return -ENOMEM;
423
424 return sd_bus_reply_method_return(message, "o", p);
425 }
426
427 /* Get login session of a process. This is not what you are looking for these days,
428 * as apps may instead belong to a user service unit. This includes terminal
429 * emulators and hence command-line apps. */
430 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
431 Manager *m = ASSERT_PTR(userdata);
432 _cleanup_free_ char *p = NULL;
433 Session *session = NULL;
434 pid_t pid;
435 int r;
436
437 assert(message);
438
439 assert_cc(sizeof(pid_t) == sizeof(uint32_t));
440
441 r = sd_bus_message_read(message, "u", &pid);
442 if (r < 0)
443 return r;
444 if (pid < 0)
445 return -EINVAL;
446
447 if (pid == 0) {
448 r = manager_get_session_from_creds(m, message, NULL, error, &session);
449 if (r < 0)
450 return r;
451 } else {
452 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
453 if (r < 0)
454 return r;
455
456 if (!session)
457 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
458 "PID "PID_FMT" does not belong to any known session", pid);
459 }
460
461 p = session_bus_path(session);
462 if (!p)
463 return -ENOMEM;
464
465 return sd_bus_reply_method_return(message, "o", p);
466 }
467
468 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
469 _cleanup_free_ char *p = NULL;
470 Manager *m = ASSERT_PTR(userdata);
471 uint32_t uid;
472 User *user;
473 int r;
474
475 assert(message);
476
477 r = sd_bus_message_read(message, "u", &uid);
478 if (r < 0)
479 return r;
480
481 r = manager_get_user_from_creds(m, message, uid, error, &user);
482 if (r < 0)
483 return r;
484
485 p = user_bus_path(user);
486 if (!p)
487 return -ENOMEM;
488
489 return sd_bus_reply_method_return(message, "o", p);
490 }
491
492 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
493 _cleanup_free_ char *p = NULL;
494 Manager *m = ASSERT_PTR(userdata);
495 User *user = NULL;
496 pid_t pid;
497 int r;
498
499 assert(message);
500
501 assert_cc(sizeof(pid_t) == sizeof(uint32_t));
502
503 r = sd_bus_message_read(message, "u", &pid);
504 if (r < 0)
505 return r;
506 if (pid < 0)
507 return -EINVAL;
508
509 if (pid == 0) {
510 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
511 if (r < 0)
512 return r;
513 } else {
514 r = manager_get_user_by_pid(m, pid, &user);
515 if (r < 0)
516 return r;
517 if (!user)
518 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
519 "PID "PID_FMT" does not belong to any logged in user or lingering user",
520 pid);
521 }
522
523 p = user_bus_path(user);
524 if (!p)
525 return -ENOMEM;
526
527 return sd_bus_reply_method_return(message, "o", p);
528 }
529
530 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
531 _cleanup_free_ char *p = NULL;
532 Manager *m = ASSERT_PTR(userdata);
533 const char *name;
534 Seat *seat;
535 int r;
536
537 assert(message);
538
539 r = sd_bus_message_read(message, "s", &name);
540 if (r < 0)
541 return r;
542
543 r = manager_get_seat_from_creds(m, message, name, error, &seat);
544 if (r < 0)
545 return r;
546
547 p = seat_bus_path(seat);
548 if (!p)
549 return -ENOMEM;
550
551 return sd_bus_reply_method_return(message, "o", p);
552 }
553
554 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
555 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
556 Manager *m = ASSERT_PTR(userdata);
557 Session *session;
558 int r;
559
560 assert(message);
561
562 r = sd_bus_message_new_method_return(message, &reply);
563 if (r < 0)
564 return r;
565
566 r = sd_bus_message_open_container(reply, 'a', "(susso)");
567 if (r < 0)
568 return r;
569
570 HASHMAP_FOREACH(session, m->sessions) {
571 _cleanup_free_ char *p = NULL;
572
573 p = session_bus_path(session);
574 if (!p)
575 return -ENOMEM;
576
577 r = sd_bus_message_append(reply, "(susso)",
578 session->id,
579 (uint32_t) session->user->user_record->uid,
580 session->user->user_record->user_name,
581 session->seat ? session->seat->id : "",
582 p);
583 if (r < 0)
584 return r;
585 }
586
587 r = sd_bus_message_close_container(reply);
588 if (r < 0)
589 return r;
590
591 return sd_bus_send(NULL, reply, NULL);
592 }
593
594 static int method_list_sessions_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {
595 Manager *m = ASSERT_PTR(userdata);
596 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
597 int r;
598
599 assert(message);
600
601 r = sd_bus_message_new_method_return(message, &reply);
602 if (r < 0)
603 return r;
604
605 r = sd_bus_message_open_container(reply, 'a', "(sussussbto)");
606 if (r < 0)
607 return r;
608
609 Session *s;
610 HASHMAP_FOREACH(s, m->sessions) {
611 _cleanup_free_ char *path = NULL;
612 dual_timestamp idle_ts;
613 bool idle;
614
615 assert(s->user);
616
617 path = session_bus_path(s);
618 if (!path)
619 return -ENOMEM;
620
621 r = session_get_idle_hint(s, &idle_ts);
622 if (r < 0)
623 return r;
624 idle = r > 0;
625
626 r = sd_bus_message_append(reply, "(sussussbto)",
627 s->id,
628 (uint32_t) s->user->user_record->uid,
629 s->user->user_record->user_name,
630 s->seat ? s->seat->id : "",
631 (uint32_t) s->leader.pid,
632 session_class_to_string(s->class),
633 s->tty,
634 idle,
635 idle_ts.monotonic,
636 path);
637 if (r < 0)
638 return r;
639 }
640
641 r = sd_bus_message_close_container(reply);
642 if (r < 0)
643 return r;
644
645 return sd_bus_send(NULL, reply, NULL);
646 }
647
648 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
649 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
650 Manager *m = ASSERT_PTR(userdata);
651 User *user;
652 int r;
653
654 assert(message);
655
656 r = sd_bus_message_new_method_return(message, &reply);
657 if (r < 0)
658 return r;
659
660 r = sd_bus_message_open_container(reply, 'a', "(uso)");
661 if (r < 0)
662 return r;
663
664 HASHMAP_FOREACH(user, m->users) {
665 _cleanup_free_ char *p = NULL;
666
667 p = user_bus_path(user);
668 if (!p)
669 return -ENOMEM;
670
671 r = sd_bus_message_append(reply, "(uso)",
672 (uint32_t) user->user_record->uid,
673 user->user_record->user_name,
674 p);
675 if (r < 0)
676 return r;
677 }
678
679 r = sd_bus_message_close_container(reply);
680 if (r < 0)
681 return r;
682
683 return sd_bus_send(NULL, reply, NULL);
684 }
685
686 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
687 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
688 Manager *m = ASSERT_PTR(userdata);
689 Seat *seat;
690 int r;
691
692 assert(message);
693
694 r = sd_bus_message_new_method_return(message, &reply);
695 if (r < 0)
696 return r;
697
698 r = sd_bus_message_open_container(reply, 'a', "(so)");
699 if (r < 0)
700 return r;
701
702 HASHMAP_FOREACH(seat, m->seats) {
703 _cleanup_free_ char *p = NULL;
704
705 p = seat_bus_path(seat);
706 if (!p)
707 return -ENOMEM;
708
709 r = sd_bus_message_append(reply, "(so)", seat->id, p);
710 if (r < 0)
711 return r;
712 }
713
714 r = sd_bus_message_close_container(reply);
715 if (r < 0)
716 return r;
717
718 return sd_bus_send(NULL, reply, NULL);
719 }
720
721 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
722 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
723 Manager *m = ASSERT_PTR(userdata);
724 Inhibitor *inhibitor;
725 int r;
726
727 assert(message);
728
729 r = sd_bus_message_new_method_return(message, &reply);
730 if (r < 0)
731 return r;
732
733 r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
734 if (r < 0)
735 return r;
736
737 HASHMAP_FOREACH(inhibitor, m->inhibitors) {
738
739 r = sd_bus_message_append(reply, "(ssssuu)",
740 strempty(inhibit_what_to_string(inhibitor->what)),
741 strempty(inhibitor->who),
742 strempty(inhibitor->why),
743 strempty(inhibit_mode_to_string(inhibitor->mode)),
744 (uint32_t) inhibitor->uid,
745 (uint32_t) inhibitor->pid.pid);
746 if (r < 0)
747 return r;
748 }
749
750 r = sd_bus_message_close_container(reply);
751 if (r < 0)
752 return r;
753
754 return sd_bus_send(NULL, reply, NULL);
755 }
756
757 static int create_session(
758 sd_bus_message *message,
759 void *userdata,
760 sd_bus_error *error,
761 uid_t uid,
762 pid_t pid,
763 int pidfd,
764 const char *service,
765 const char *type,
766 const char *class,
767 const char *desktop,
768 const char *cseat,
769 uint32_t vtnr,
770 const char *tty,
771 const char *display,
772 int remote,
773 const char *remote_user,
774 const char *remote_host,
775 uint64_t flags) {
776
777 _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
778 Manager *m = ASSERT_PTR(userdata);
779 _cleanup_free_ char *id = NULL;
780 Session *session = NULL;
781 uint32_t audit_id = 0;
782 User *user = NULL;
783 Seat *seat = NULL;
784 SessionType t;
785 SessionClass c;
786 int r;
787
788 assert(message);
789
790 if (!uid_is_valid(uid))
791 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
792
793 if (flags != 0)
794 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
795
796 if (pidfd >= 0) {
797 r = pidref_set_pidfd(&leader, pidfd);
798 if (r < 0)
799 return r;
800 } else if (pid == 0) {
801 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
802 pid_t p;
803
804 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
805 if (r < 0)
806 return r;
807
808 r = sd_bus_creds_get_pid(creds, &p);
809 if (r < 0)
810 return r;
811
812 r = pidref_set_pid(&leader, p);
813 if (r < 0)
814 return r;
815 } else {
816 assert(pid > 0);
817
818 r = pidref_set_pid(&leader, pid);
819 if (r < 0)
820 return r;
821 }
822
823 if (leader.pid == 1 || leader.pid == getpid_cached())
824 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
825
826 if (isempty(type))
827 t = _SESSION_TYPE_INVALID;
828 else {
829 t = session_type_from_string(type);
830 if (t < 0)
831 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
832 "Invalid session type %s", type);
833 }
834
835 if (isempty(class))
836 c = _SESSION_CLASS_INVALID;
837 else {
838 c = session_class_from_string(class);
839 if (c < 0)
840 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
841 "Invalid session class %s", class);
842 }
843
844 if (isempty(desktop))
845 desktop = NULL;
846 else {
847 if (!string_is_safe(desktop))
848 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
849 "Invalid desktop string %s", desktop);
850 }
851
852 if (isempty(cseat))
853 seat = NULL;
854 else {
855 seat = hashmap_get(m->seats, cseat);
856 if (!seat)
857 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
858 "No seat '%s' known", cseat);
859 }
860
861 if (tty_is_vc(tty)) {
862 int v;
863
864 if (!seat)
865 seat = m->seat0;
866 else if (seat != m->seat0)
867 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
868 "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
869
870 v = vtnr_from_tty(tty);
871 if (v <= 0)
872 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
873 "Cannot determine VT number from virtual console TTY %s", tty);
874
875 if (vtnr == 0)
876 vtnr = (uint32_t) v;
877 else if (vtnr != (uint32_t) v)
878 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
879 "Specified TTY and VT number do not match");
880
881 } else if (tty_is_console(tty)) {
882
883 if (!seat)
884 seat = m->seat0;
885 else if (seat != m->seat0)
886 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
887 "Console TTY specified but seat is not seat0");
888
889 if (vtnr != 0)
890 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
891 "Console TTY specified but VT number is not 0");
892 }
893
894 if (seat) {
895 if (seat_has_vts(seat)) {
896 if (vtnr <= 0 || vtnr > 63)
897 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
898 "VT number out of range");
899 } else {
900 if (vtnr != 0)
901 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
902 "Seat has no VTs but VT number not 0");
903 }
904 }
905
906 if (t == _SESSION_TYPE_INVALID) {
907 if (!isempty(display))
908 t = SESSION_X11;
909 else if (!isempty(tty))
910 t = SESSION_TTY;
911 else
912 t = SESSION_UNSPECIFIED;
913 }
914
915 if (c == _SESSION_CLASS_INVALID) {
916 if (t == SESSION_UNSPECIFIED)
917 c = SESSION_BACKGROUND;
918 else
919 c = SESSION_USER;
920 }
921
922 /* Check if we are already in a logind session, and if so refuse. */
923 r = manager_get_session_by_pidref(m, &leader, /* ret_session= */ NULL);
924 if (r < 0)
925 return r;
926 if (r > 0)
927 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
928 "Already running in a session or user slice");
929
930 /* Old gdm and lightdm start the user-session on the same VT as the greeter session. But they destroy
931 * the greeter session after the user-session and want the user-session to take over the VT. We need
932 * to support this for backwards-compatibility, so make sure we allow new sessions on a VT that a
933 * greeter is running on. Furthermore, to allow re-logins, we have to allow a greeter to take over a
934 * used VT for the exact same reasons. */
935 if (c != SESSION_GREETER &&
936 vtnr > 0 &&
937 vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
938 m->seat0->positions[vtnr] &&
939 m->seat0->positions[vtnr]->class != SESSION_GREETER)
940 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
941
942 if (hashmap_size(m->sessions) >= m->sessions_max)
943 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
944 "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
945 m->sessions_max);
946
947 (void) audit_session_from_pid(leader.pid, &audit_id);
948 if (audit_session_is_valid(audit_id)) {
949 /* Keep our session IDs and the audit session IDs in sync */
950
951 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
952 return -ENOMEM;
953
954 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
955 * not trust the audit data and let's better register a new ID */
956 if (hashmap_contains(m->sessions, id)) {
957 log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
958 audit_id = AUDIT_SESSION_INVALID;
959 id = mfree(id);
960 }
961 }
962
963 if (!id) {
964 do {
965 id = mfree(id);
966
967 if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
968 return -ENOMEM;
969
970 } while (hashmap_contains(m->sessions, id));
971 }
972
973 /* The generated names should not clash with 'auto' or 'self' */
974 assert(!SESSION_IS_SELF(id));
975 assert(!SESSION_IS_AUTO(id));
976
977 /* If we are not watching utmp already, try again */
978 manager_reconnect_utmp(m);
979
980 r = manager_add_user_by_uid(m, uid, &user);
981 if (r < 0)
982 goto fail;
983
984 r = manager_add_session(m, id, &session);
985 if (r < 0)
986 goto fail;
987
988 session_set_user(session, user);
989 r = session_set_leader_consume(session, TAKE_PIDREF(leader));
990 if (r < 0)
991 goto fail;
992
993 session->original_type = session->type = t;
994 session->remote = remote;
995 session->vtnr = vtnr;
996 session->class = c;
997
998 /* Once the first session that is of a pinning class shows up we'll change the GC mode for the user
999 * from USER_GC_BY_ANY to USER_GC_BY_PIN, so that the user goes away once the last pinning session
1000 * goes away. Background: we want that user@.service – when started manually – remains around (which
1001 * itself is a non-pinning session), but gets stopped when the last pinning session goes away. */
1002
1003 if (SESSION_CLASS_PIN_USER(c))
1004 user->gc_mode = USER_GC_BY_PIN;
1005
1006 if (!isempty(tty)) {
1007 session->tty = strdup(tty);
1008 if (!session->tty) {
1009 r = -ENOMEM;
1010 goto fail;
1011 }
1012
1013 session->tty_validity = TTY_FROM_PAM;
1014 }
1015
1016 if (!isempty(display)) {
1017 session->display = strdup(display);
1018 if (!session->display) {
1019 r = -ENOMEM;
1020 goto fail;
1021 }
1022 }
1023
1024 if (!isempty(remote_user)) {
1025 session->remote_user = strdup(remote_user);
1026 if (!session->remote_user) {
1027 r = -ENOMEM;
1028 goto fail;
1029 }
1030 }
1031
1032 if (!isempty(remote_host)) {
1033 session->remote_host = strdup(remote_host);
1034 if (!session->remote_host) {
1035 r = -ENOMEM;
1036 goto fail;
1037 }
1038 }
1039
1040 if (!isempty(service)) {
1041 session->service = strdup(service);
1042 if (!session->service) {
1043 r = -ENOMEM;
1044 goto fail;
1045 }
1046 }
1047
1048 if (!isempty(desktop)) {
1049 session->desktop = strdup(desktop);
1050 if (!session->desktop) {
1051 r = -ENOMEM;
1052 goto fail;
1053 }
1054 }
1055
1056 if (seat) {
1057 r = seat_attach_session(seat, session);
1058 if (r < 0)
1059 goto fail;
1060 }
1061
1062 r = sd_bus_message_enter_container(message, 'a', "(sv)");
1063 if (r < 0)
1064 goto fail;
1065
1066 r = session_start(session, message, error);
1067 if (r < 0)
1068 goto fail;
1069
1070 r = sd_bus_message_exit_container(message);
1071 if (r < 0)
1072 goto fail;
1073
1074 session->create_message = sd_bus_message_ref(message);
1075
1076 /* Now call into session_send_create_reply(), which will reply to this method call for us. Or it
1077 * won't – in case we just spawned a session scope and/or user service manager, and they aren't ready
1078 * yet. We'll call session_create_reply() again once the session scope or the user service manager is
1079 * ready, where the function will check again if a reply is then ready to be sent, and then do so if
1080 * all is complete - or wait again. */
1081 r = session_send_create_reply(session, /* error= */ NULL);
1082 if (r < 0)
1083 return r;
1084
1085 return 1;
1086
1087 fail:
1088 if (session)
1089 session_add_to_gc_queue(session);
1090
1091 if (user)
1092 user_add_to_gc_queue(user);
1093
1094 return r;
1095 }
1096
1097 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1098 const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1099 pid_t leader;
1100 uid_t uid;
1101 int remote;
1102 uint32_t vtnr = 0;
1103 int r;
1104
1105 assert(message);
1106
1107 assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1108 assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1109
1110 r = sd_bus_message_read(message,
1111 "uusssssussbss",
1112 &uid,
1113 &leader,
1114 &service,
1115 &type,
1116 &class,
1117 &desktop,
1118 &cseat,
1119 &vtnr,
1120 &tty,
1121 &display,
1122 &remote,
1123 &remote_user,
1124 &remote_host);
1125 if (r < 0)
1126 return r;
1127
1128 return create_session(
1129 message,
1130 userdata,
1131 error,
1132 uid,
1133 leader,
1134 /* pidfd = */ -EBADF,
1135 service,
1136 type,
1137 class,
1138 desktop,
1139 cseat,
1140 vtnr,
1141 tty,
1142 display,
1143 remote,
1144 remote_user,
1145 remote_host,
1146 /* flags = */ 0);
1147 }
1148
1149 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1150 const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1151 int leaderfd = -EBADF;
1152 uid_t uid;
1153 int remote;
1154 uint32_t vtnr = 0;
1155 uint64_t flags;
1156 int r;
1157
1158 r = sd_bus_message_read(message,
1159 "uhsssssussbsst",
1160 &uid,
1161 &leaderfd,
1162 &service,
1163 &type,
1164 &class,
1165 &desktop,
1166 &cseat,
1167 &vtnr,
1168 &tty,
1169 &display,
1170 &remote,
1171 &remote_user,
1172 &remote_host,
1173 &flags);
1174 if (r < 0)
1175 return r;
1176
1177 return create_session(
1178 message,
1179 userdata,
1180 error,
1181 uid,
1182 /* pid = */ 0,
1183 leaderfd,
1184 service,
1185 type,
1186 class,
1187 desktop,
1188 cseat,
1189 vtnr,
1190 tty,
1191 display,
1192 remote,
1193 remote_user,
1194 remote_host,
1195 flags);
1196 }
1197
1198 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1199 Manager *m = ASSERT_PTR(userdata);
1200 Session *session;
1201 const char *name;
1202 int r;
1203
1204 assert(message);
1205
1206 r = sd_bus_message_read(message, "s", &name);
1207 if (r < 0)
1208 return r;
1209
1210 r = manager_get_session_from_creds(m, message, name, error, &session);
1211 if (r < 0)
1212 return r;
1213
1214 r = session_release(session);
1215 if (r < 0)
1216 return r;
1217
1218 return sd_bus_reply_method_return(message, NULL);
1219 }
1220
1221 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1222 Manager *m = ASSERT_PTR(userdata);
1223 Session *session;
1224 const char *name;
1225 int r;
1226
1227 assert(message);
1228
1229 r = sd_bus_message_read(message, "s", &name);
1230 if (r < 0)
1231 return r;
1232
1233 r = manager_get_session_from_creds(m, message, name, error, &session);
1234 if (r < 0)
1235 return r;
1236
1237 /* PolicyKit is done by bus_session_method_activate() */
1238
1239 return bus_session_method_activate(message, session, error);
1240 }
1241
1242 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1243 const char *session_name, *seat_name;
1244 Manager *m = ASSERT_PTR(userdata);
1245 Session *session;
1246 Seat *seat;
1247 int r;
1248
1249 assert(message);
1250
1251 /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1252
1253 r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1254 if (r < 0)
1255 return r;
1256
1257 r = manager_get_session_from_creds(m, message, session_name, error, &session);
1258 if (r < 0)
1259 return r;
1260
1261 r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1262 if (r < 0)
1263 return r;
1264
1265 if (session->seat != seat)
1266 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1267 "Session %s not on seat %s", session_name, seat_name);
1268
1269 r = check_polkit_chvt(message, m, error);
1270 if (r < 0)
1271 return r;
1272 if (r == 0)
1273 return 1; /* Will call us back */
1274
1275 r = session_activate(session);
1276 if (r < 0)
1277 return r;
1278
1279 return sd_bus_reply_method_return(message, NULL);
1280 }
1281
1282 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1283 Manager *m = ASSERT_PTR(userdata);
1284 Session *session;
1285 const char *name;
1286 int r;
1287
1288 assert(message);
1289
1290 r = sd_bus_message_read(message, "s", &name);
1291 if (r < 0)
1292 return r;
1293
1294 r = manager_get_session_from_creds(m, message, name, error, &session);
1295 if (r < 0)
1296 return r;
1297
1298 return bus_session_method_lock(message, session, error);
1299 }
1300
1301 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1302 Manager *m = ASSERT_PTR(userdata);
1303 int r;
1304
1305 assert(message);
1306
1307 r = bus_verify_polkit_async(
1308 message,
1309 "org.freedesktop.login1.lock-sessions",
1310 /* details= */ NULL,
1311 &m->polkit_registry,
1312 error);
1313 if (r < 0)
1314 return r;
1315 if (r == 0)
1316 return 1; /* Will call us back */
1317
1318 r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1319 if (r < 0)
1320 return r;
1321
1322 return sd_bus_reply_method_return(message, NULL);
1323 }
1324
1325 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1326 const char *name;
1327 Manager *m = ASSERT_PTR(userdata);
1328 Session *session;
1329 int r;
1330
1331 assert(message);
1332
1333 r = sd_bus_message_read(message, "s", &name);
1334 if (r < 0)
1335 return r;
1336
1337 r = manager_get_session_from_creds(m, message, name, error, &session);
1338 if (r < 0)
1339 return r;
1340
1341 return bus_session_method_kill(message, session, error);
1342 }
1343
1344 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1345 Manager *m = ASSERT_PTR(userdata);
1346 uint32_t uid;
1347 User *user;
1348 int r;
1349
1350 assert(message);
1351
1352 r = sd_bus_message_read(message, "u", &uid);
1353 if (r < 0)
1354 return r;
1355
1356 r = manager_get_user_from_creds(m, message, uid, error, &user);
1357 if (r < 0)
1358 return r;
1359
1360 return bus_user_method_kill(message, user, error);
1361 }
1362
1363 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1364 Manager *m = ASSERT_PTR(userdata);
1365 const char *name;
1366 Session *session;
1367 int r;
1368
1369 assert(message);
1370
1371 r = sd_bus_message_read(message, "s", &name);
1372 if (r < 0)
1373 return r;
1374
1375 r = manager_get_session_from_creds(m, message, name, error, &session);
1376 if (r < 0)
1377 return r;
1378
1379 return bus_session_method_terminate(message, session, error);
1380 }
1381
1382 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1383 Manager *m = ASSERT_PTR(userdata);
1384 uint32_t uid;
1385 User *user;
1386 int r;
1387
1388 assert(message);
1389
1390 r = sd_bus_message_read(message, "u", &uid);
1391 if (r < 0)
1392 return r;
1393
1394 r = manager_get_user_from_creds(m, message, uid, error, &user);
1395 if (r < 0)
1396 return r;
1397
1398 return bus_user_method_terminate(message, user, error);
1399 }
1400
1401 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1402 Manager *m = ASSERT_PTR(userdata);
1403 const char *name;
1404 Seat *seat;
1405 int r;
1406
1407 assert(message);
1408
1409 r = sd_bus_message_read(message, "s", &name);
1410 if (r < 0)
1411 return r;
1412
1413 r = manager_get_seat_from_creds(m, message, name, error, &seat);
1414 if (r < 0)
1415 return r;
1416
1417 return bus_seat_method_terminate(message, seat, error);
1418 }
1419
1420 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1421 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1422 _cleanup_free_ struct passwd *pw = NULL;
1423 _cleanup_free_ char *cc = NULL;
1424 Manager *m = ASSERT_PTR(userdata);
1425 int r, b, interactive;
1426 const char *path;
1427 uint32_t uid, auth_uid;
1428
1429 assert(message);
1430
1431 r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1432 if (r < 0)
1433 return r;
1434
1435 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1436 SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1437 if (r < 0)
1438 return r;
1439
1440 if (!uid_is_valid(uid)) {
1441 /* Note that we get the owner UID of the session or user unit,
1442 * not the actual client UID here! */
1443 r = sd_bus_creds_get_owner_uid(creds, &uid);
1444 if (r < 0)
1445 return r;
1446 }
1447
1448 /* owner_uid is racy, so for authorization we must use euid */
1449 r = sd_bus_creds_get_euid(creds, &auth_uid);
1450 if (r < 0)
1451 return r;
1452
1453 r = getpwuid_malloc(uid, &pw);
1454 if (r < 0)
1455 return r;
1456
1457 r = bus_verify_polkit_async_full(
1458 message,
1459 uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1460 "org.freedesktop.login1.set-user-linger",
1461 /* details= */ NULL,
1462 interactive,
1463 /* good_user= */ UID_INVALID,
1464 &m->polkit_registry,
1465 error);
1466 if (r < 0)
1467 return r;
1468 if (r == 0)
1469 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1470
1471 (void) mkdir_p_label("/var/lib/systemd", 0755);
1472 r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1473 if (r < 0)
1474 return r;
1475
1476 cc = cescape(pw->pw_name);
1477 if (!cc)
1478 return -ENOMEM;
1479
1480 path = strjoina("/var/lib/systemd/linger/", cc);
1481 if (b) {
1482 User *u;
1483
1484 r = touch(path);
1485 if (r < 0)
1486 return r;
1487
1488 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1489 user_start(u);
1490
1491 } else {
1492 User *u;
1493
1494 r = unlink(path);
1495 if (r < 0 && errno != ENOENT)
1496 return -errno;
1497
1498 u = hashmap_get(m->users, UID_TO_PTR(uid));
1499 if (u)
1500 user_add_to_gc_queue(u);
1501 }
1502
1503 return sd_bus_reply_method_return(message, NULL);
1504 }
1505
1506 static int trigger_device(Manager *m, sd_device *parent) {
1507 _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1508 int r;
1509
1510 assert(m);
1511
1512 r = sd_device_enumerator_new(&e);
1513 if (r < 0)
1514 return r;
1515
1516 r = sd_device_enumerator_allow_uninitialized(e);
1517 if (r < 0)
1518 return r;
1519
1520 if (parent) {
1521 r = sd_device_enumerator_add_match_parent(e, parent);
1522 if (r < 0)
1523 return r;
1524 }
1525
1526 FOREACH_DEVICE(e, d) {
1527 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1528 if (r < 0)
1529 log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1530 }
1531
1532 return 0;
1533 }
1534
1535 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1536 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1537 _cleanup_free_ char *rule = NULL, *file = NULL;
1538 const char *id_for_seat;
1539 int r;
1540
1541 assert(m);
1542 assert(seat);
1543 assert(sysfs);
1544
1545 r = sd_device_new_from_syspath(&d, sysfs);
1546 if (r < 0)
1547 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1548
1549 if (sd_device_has_current_tag(d, "seat") <= 0)
1550 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1551
1552 if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1553 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1554
1555 if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1556 return -ENOMEM;
1557
1558 if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1559 return -ENOMEM;
1560
1561 (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1562 r = write_string_file_atomic_label(file, rule);
1563 if (r < 0)
1564 return r;
1565
1566 return trigger_device(m, d);
1567 }
1568
1569 static int flush_devices(Manager *m) {
1570 _cleanup_closedir_ DIR *d = NULL;
1571
1572 assert(m);
1573
1574 d = opendir("/etc/udev/rules.d");
1575 if (!d) {
1576 if (errno != ENOENT)
1577 log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1578 } else
1579 FOREACH_DIRENT_ALL(de, d, break) {
1580 if (!dirent_is_file(de))
1581 continue;
1582
1583 if (!startswith(de->d_name, "72-seat-"))
1584 continue;
1585
1586 if (!endswith(de->d_name, ".rules"))
1587 continue;
1588
1589 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1590 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1591 }
1592
1593 return trigger_device(m, NULL);
1594 }
1595
1596 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1597 const char *sysfs, *seat;
1598 Manager *m = ASSERT_PTR(userdata);
1599 int interactive, r;
1600
1601 assert(message);
1602
1603 r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1604 if (r < 0)
1605 return r;
1606
1607 if (!path_is_normalized(sysfs))
1608 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1609 if (!path_startswith(sysfs, "/sys"))
1610 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1611
1612 if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1613 Seat *found;
1614
1615 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1616 if (r < 0)
1617 return r;
1618
1619 seat = found->id;
1620
1621 } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1622 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1623
1624 r = bus_verify_polkit_async_full(
1625 message,
1626 "org.freedesktop.login1.attach-device",
1627 /* details= */ NULL,
1628 interactive,
1629 /* good_user= */ UID_INVALID,
1630 &m->polkit_registry,
1631 error);
1632 if (r < 0)
1633 return r;
1634 if (r == 0)
1635 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1636
1637 r = attach_device(m, seat, sysfs, error);
1638 if (r < 0)
1639 return r;
1640
1641 return sd_bus_reply_method_return(message, NULL);
1642 }
1643
1644 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1645 Manager *m = ASSERT_PTR(userdata);
1646 int interactive, r;
1647
1648 assert(message);
1649
1650 r = sd_bus_message_read(message, "b", &interactive);
1651 if (r < 0)
1652 return r;
1653
1654 r = bus_verify_polkit_async_full(
1655 message,
1656 "org.freedesktop.login1.flush-devices",
1657 /* details= */ NULL,
1658 interactive,
1659 /* good_user= */ UID_INVALID,
1660 &m->polkit_registry,
1661 error);
1662 if (r < 0)
1663 return r;
1664 if (r == 0)
1665 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1666
1667 r = flush_devices(m);
1668 if (r < 0)
1669 return r;
1670
1671 return sd_bus_reply_method_return(message, NULL);
1672 }
1673
1674 static int have_multiple_sessions(
1675 Manager *m,
1676 uid_t uid) {
1677
1678 Session *session;
1679
1680 assert(m);
1681
1682 /* Check for other users' sessions. Greeter sessions do not
1683 * count, and non-login sessions do not count either. */
1684 HASHMAP_FOREACH(session, m->sessions)
1685 if (session->class == SESSION_USER &&
1686 session->user->user_record->uid != uid)
1687 return true;
1688
1689 return false;
1690 }
1691
1692 static int bus_manager_log_shutdown(
1693 Manager *m,
1694 const HandleActionData *a) {
1695 assert(m);
1696 assert(a);
1697
1698 const char *message = a->message ?: "System is shutting down";
1699 const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1700
1701 return log_struct(LOG_NOTICE,
1702 "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1703 LOG_MESSAGE("%s%s%s%s.",
1704 message,
1705 m->wall_message ? " (" : "",
1706 strempty(m->wall_message),
1707 m->wall_message ? ")" : ""),
1708 log_verb);
1709 }
1710
1711 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1712 Manager *m = ASSERT_PTR(userdata);
1713
1714 assert(e);
1715
1716 m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1717 return 0;
1718 }
1719
1720 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1721 int r;
1722
1723 assert(m);
1724
1725 if (until <= now(CLOCK_MONOTONIC))
1726 return 0;
1727
1728 /* We want to ignore the lid switch for a while after each
1729 * suspend, and after boot-up. Hence let's install a timer for
1730 * this. As long as the event source exists we ignore the lid
1731 * switch. */
1732
1733 if (m->lid_switch_ignore_event_source) {
1734 usec_t u;
1735
1736 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1737 if (r < 0)
1738 return r;
1739
1740 if (until <= u)
1741 return 0;
1742
1743 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1744 } else
1745 r = sd_event_add_time(
1746 m->event,
1747 &m->lid_switch_ignore_event_source,
1748 CLOCK_MONOTONIC,
1749 until, 0,
1750 lid_switch_ignore_handler, m);
1751
1752 return r;
1753 }
1754
1755 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1756 int k = 0, r, active = _active;
1757
1758 assert(m);
1759 assert(a);
1760 assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1761
1762 /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1763 * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1764 * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1765 * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1766 * change the order here, as it is an API. */
1767 if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1768 k = sd_bus_emit_signal(m->bus,
1769 "/org/freedesktop/login1",
1770 "org.freedesktop.login1.Manager",
1771 "PrepareForShutdownWithMetadata",
1772 "ba{sv}",
1773 active,
1774 1,
1775 "type",
1776 "s",
1777 handle_action_to_string(a->handle));
1778 if (k < 0)
1779 log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1780 }
1781
1782 r = sd_bus_emit_signal(m->bus,
1783 "/org/freedesktop/login1",
1784 "org.freedesktop.login1.Manager",
1785 a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1786 "b",
1787 active);
1788 if (r < 0)
1789 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1790
1791 return RET_GATHER(k, r);
1792 }
1793
1794 static int execute_shutdown_or_sleep(
1795 Manager *m,
1796 const HandleActionData *a,
1797 sd_bus_error *error) {
1798
1799 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1800 const char *p;
1801 int r;
1802
1803 assert(m);
1804 assert(!m->action_job);
1805 assert(a);
1806
1807 if (a->inhibit_what == INHIBIT_SHUTDOWN)
1808 bus_manager_log_shutdown(m, a);
1809
1810 r = bus_call_method(
1811 m->bus,
1812 bus_systemd_mgr,
1813 "StartUnit",
1814 error,
1815 &reply,
1816 "ss", a->target, "replace-irreversibly");
1817 if (r < 0)
1818 goto error;
1819
1820 r = sd_bus_message_read(reply, "o", &p);
1821 if (r < 0)
1822 goto error;
1823
1824 m->action_job = strdup(p);
1825 if (!m->action_job) {
1826 r = -ENOMEM;
1827 goto error;
1828 }
1829
1830 m->delayed_action = a;
1831
1832 /* Make sure the lid switch is ignored for a while */
1833 manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1834
1835 return 0;
1836
1837 error:
1838 /* Tell people that they now may take a lock again */
1839 (void) send_prepare_for(m, a, false);
1840
1841 return r;
1842 }
1843
1844 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1845 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1846 Inhibitor *offending = NULL;
1847 int r;
1848
1849 assert(manager);
1850
1851 if (!manager->delayed_action || manager->action_job)
1852 return 0;
1853
1854 if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1855 _cleanup_free_ char *comm = NULL, *u = NULL;
1856
1857 if (!timeout)
1858 return 0;
1859
1860 (void) pidref_get_comm(&offending->pid, &comm);
1861 u = uid_to_name(offending->uid);
1862
1863 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1864 offending->uid, strna(u),
1865 offending->pid.pid, strna(comm));
1866 }
1867
1868 /* Actually do the operation */
1869 r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1870 if (r < 0) {
1871 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1872 bus_error_message(&error, r));
1873
1874 manager->delayed_action = NULL;
1875 }
1876
1877 return 1; /* We did some work. */
1878 }
1879
1880 static int manager_inhibit_timeout_handler(
1881 sd_event_source *s,
1882 uint64_t usec,
1883 void *userdata) {
1884
1885 Manager *manager = ASSERT_PTR(userdata);
1886
1887 assert(manager->inhibit_timeout_source == s);
1888
1889 return manager_dispatch_delayed(manager, true);
1890 }
1891
1892 static int delay_shutdown_or_sleep(
1893 Manager *m,
1894 const HandleActionData *a) {
1895
1896 int r;
1897
1898 assert(m);
1899 assert(a);
1900
1901 if (m->inhibit_timeout_source) {
1902 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1903 if (r < 0)
1904 return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1905
1906 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1907 if (r < 0)
1908 return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1909 } else {
1910 r = sd_event_add_time_relative(
1911 m->event,
1912 &m->inhibit_timeout_source,
1913 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1914 manager_inhibit_timeout_handler, m);
1915 if (r < 0)
1916 return r;
1917 }
1918
1919 m->delayed_action = a;
1920
1921 return 0;
1922 }
1923
1924 int bus_manager_shutdown_or_sleep_now_or_later(
1925 Manager *m,
1926 const HandleActionData *a,
1927 sd_bus_error *error) {
1928
1929 _cleanup_free_ char *load_state = NULL;
1930 bool delayed;
1931 int r;
1932
1933 assert(m);
1934 assert(a);
1935 assert(!m->action_job);
1936
1937 r = unit_load_state(m->bus, a->target, &load_state);
1938 if (r < 0)
1939 return r;
1940
1941 if (!streq(load_state, "loaded"))
1942 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1943 "Unit %s is %s, refusing operation.",
1944 a->target, load_state);
1945
1946 /* Tell everybody to prepare for shutdown/sleep */
1947 (void) send_prepare_for(m, a, true);
1948
1949 delayed =
1950 m->inhibit_delay_max > 0 &&
1951 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1952
1953 if (delayed)
1954 /* Shutdown is delayed, keep in mind what we
1955 * want to do, and start a timeout */
1956 r = delay_shutdown_or_sleep(m, a);
1957 else
1958 /* Shutdown is not delayed, execute it
1959 * immediately */
1960 r = execute_shutdown_or_sleep(m, a, error);
1961
1962 return r;
1963 }
1964
1965 static int verify_shutdown_creds(
1966 Manager *m,
1967 sd_bus_message *message,
1968 const HandleActionData *a,
1969 uint64_t flags,
1970 sd_bus_error *error) {
1971
1972 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1973 bool multiple_sessions, blocked, interactive;
1974 uid_t uid;
1975 int r;
1976
1977 assert(m);
1978 assert(a);
1979 assert(message);
1980
1981 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1982 if (r < 0)
1983 return r;
1984
1985 r = sd_bus_creds_get_euid(creds, &uid);
1986 if (r < 0)
1987 return r;
1988
1989 r = have_multiple_sessions(m, uid);
1990 if (r < 0)
1991 return r;
1992
1993 multiple_sessions = r > 0;
1994 blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1995 interactive = flags & SD_LOGIND_INTERACTIVE;
1996
1997 if (multiple_sessions) {
1998 r = bus_verify_polkit_async_full(
1999 message,
2000 a->polkit_action_multiple_sessions,
2001 /* details= */ NULL,
2002 interactive,
2003 /* good_user= */ UID_INVALID,
2004 &m->polkit_registry,
2005 error);
2006 if (r < 0)
2007 return r;
2008 if (r == 0)
2009 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2010 }
2011
2012 if (blocked) {
2013 /* We don't check polkit for root here, because you can't be more privileged than root */
2014 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
2015 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
2016 "Access denied to root due to active block inhibitor");
2017
2018 r = bus_verify_polkit_async_full(
2019 message,
2020 a->polkit_action_ignore_inhibit,
2021 /* details= */ NULL,
2022 interactive,
2023 /* good_user= */ UID_INVALID,
2024 &m->polkit_registry,
2025 error);
2026 if (r < 0)
2027 return r;
2028 if (r == 0)
2029 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2030 }
2031
2032 if (!multiple_sessions && !blocked) {
2033 r = bus_verify_polkit_async_full(
2034 message,
2035 a->polkit_action,
2036 /* details= */ NULL,
2037 interactive,
2038 /* good_user= */ UID_INVALID,
2039 &m->polkit_registry,
2040 error);
2041 if (r < 0)
2042 return r;
2043 if (r == 0)
2044 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2045 }
2046
2047 return 0;
2048 }
2049
2050 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
2051 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2052 int r;
2053
2054 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2055 if (r >= 0) {
2056 const char *tty = NULL;
2057
2058 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2059 (void) sd_bus_creds_get_tty(creds, &tty);
2060
2061 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2062 if (r < 0)
2063 return log_oom();
2064 }
2065
2066 r = manager_setup_wall_message_timer(m);
2067 if (r < 0)
2068 return r;
2069
2070 return 0;
2071 }
2072
2073 static int method_do_shutdown_or_sleep(
2074 Manager *m,
2075 sd_bus_message *message,
2076 HandleAction action,
2077 bool with_flags,
2078 sd_bus_error *error) {
2079
2080 uint64_t flags;
2081 int r;
2082
2083 assert(m);
2084 assert(message);
2085 assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2086
2087 if (with_flags) {
2088 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2089 r = sd_bus_message_read(message, "t", &flags);
2090 if (r < 0)
2091 return r;
2092 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2093 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2094 "Invalid flags parameter");
2095
2096 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2097 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2098 "Both reboot via kexec and soft reboot selected, which is not supported");
2099
2100 if (action != HANDLE_REBOOT) {
2101 if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2102 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2103 "Reboot via kexec option is only applicable with reboot operations");
2104 if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2105 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2106 "Soft reboot option is only applicable with reboot operations");
2107 }
2108 } else {
2109 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2110 * payload. Let's convert this argument to the new-style flags parameter for our internal
2111 * use. */
2112 int interactive;
2113
2114 r = sd_bus_message_read(message, "b", &interactive);
2115 if (r < 0)
2116 return r;
2117
2118 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2119 }
2120
2121 const HandleActionData *a = NULL;
2122
2123 if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2124 ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2125 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2126 else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2127 a = handle_action_lookup(HANDLE_KEXEC);
2128
2129 if (action == HANDLE_SLEEP) {
2130 HandleAction selected;
2131
2132 selected = handle_action_sleep_select(m);
2133 if (selected < 0)
2134 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2135 "None of the configured sleep operations are supported");
2136
2137 assert_se(a = handle_action_lookup(selected));
2138
2139 } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2140 SleepSupport support;
2141
2142 assert_se(a = handle_action_lookup(action));
2143
2144 assert(a->sleep_operation >= 0);
2145 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2146
2147 r = sleep_supported_full(a->sleep_operation, &support);
2148 if (r < 0)
2149 return r;
2150 if (r == 0)
2151 switch (support) {
2152
2153 case SLEEP_DISABLED:
2154 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2155 "Sleep verb '%s' is disabled by config",
2156 sleep_operation_to_string(a->sleep_operation));
2157
2158 case SLEEP_NOT_CONFIGURED:
2159 case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2160 case SLEEP_ALARM_NOT_SUPPORTED:
2161 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2162 "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2163 sleep_operation_to_string(a->sleep_operation));
2164
2165 case SLEEP_RESUME_NOT_SUPPORTED:
2166 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2167 "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2168
2169 case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2170 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2171 "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2172
2173 default:
2174 assert_not_reached();
2175
2176 }
2177 } else if (!a)
2178 assert_se(a = handle_action_lookup(action));
2179
2180 r = verify_shutdown_creds(m, message, a, flags, error);
2181 if (r != 0)
2182 return r;
2183
2184 if (m->delayed_action)
2185 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
2186 "Action %s already in progress, refusing requested %s operation.",
2187 handle_action_to_string(m->delayed_action->handle),
2188 handle_action_to_string(a->handle));
2189
2190 /* reset case we're shorting a scheduled shutdown */
2191 m->unlink_nologin = false;
2192 reset_scheduled_shutdown(m);
2193
2194 m->scheduled_shutdown_timeout = 0;
2195 m->scheduled_shutdown_action = action;
2196
2197 (void) setup_wall_message_timer(m, message);
2198
2199 r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2200 if (r < 0)
2201 return r;
2202
2203 return sd_bus_reply_method_return(message, NULL);
2204 }
2205
2206 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2207 Manager *m = userdata;
2208
2209 return method_do_shutdown_or_sleep(
2210 m, message,
2211 HANDLE_POWEROFF,
2212 sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2213 error);
2214 }
2215
2216 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2217 Manager *m = userdata;
2218
2219 return method_do_shutdown_or_sleep(
2220 m, message,
2221 HANDLE_REBOOT,
2222 sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2223 error);
2224 }
2225
2226 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2227 Manager *m = userdata;
2228
2229 return method_do_shutdown_or_sleep(
2230 m, message,
2231 HANDLE_HALT,
2232 sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2233 error);
2234 }
2235
2236 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2237 Manager *m = userdata;
2238
2239 return method_do_shutdown_or_sleep(
2240 m, message,
2241 HANDLE_SUSPEND,
2242 sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2243 error);
2244 }
2245
2246 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2247 Manager *m = userdata;
2248
2249 return method_do_shutdown_or_sleep(
2250 m, message,
2251 HANDLE_HIBERNATE,
2252 sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2253 error);
2254 }
2255
2256 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2257 Manager *m = userdata;
2258
2259 return method_do_shutdown_or_sleep(
2260 m, message,
2261 HANDLE_HYBRID_SLEEP,
2262 sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2263 error);
2264 }
2265
2266 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2267 Manager *m = userdata;
2268
2269 return method_do_shutdown_or_sleep(
2270 m, message,
2271 HANDLE_SUSPEND_THEN_HIBERNATE,
2272 sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2273 error);
2274 }
2275
2276 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2277 Manager *m = userdata;
2278
2279 return method_do_shutdown_or_sleep(
2280 m, message,
2281 HANDLE_SLEEP,
2282 /* with_flags = */ true,
2283 error);
2284 }
2285
2286 static int nologin_timeout_handler(
2287 sd_event_source *s,
2288 uint64_t usec,
2289 void *userdata) {
2290
2291 Manager *m = userdata;
2292
2293 log_info("Creating /run/nologin, blocking further logins...");
2294
2295 m->unlink_nologin =
2296 create_shutdown_run_nologin_or_warn() >= 0;
2297
2298 return 0;
2299 }
2300
2301 static usec_t nologin_timeout_usec(usec_t elapse) {
2302 /* Issue /run/nologin five minutes before shutdown */
2303 return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2304 }
2305
2306 void manager_load_scheduled_shutdown(Manager *m) {
2307 _cleanup_fclose_ FILE *f = NULL;
2308 _cleanup_free_ char *usec = NULL,
2309 *warn_wall = NULL,
2310 *mode = NULL,
2311 *wall_message = NULL,
2312 *uid = NULL,
2313 *tty = NULL;
2314 int r;
2315
2316 assert(m);
2317
2318 r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2319 "USEC", &usec,
2320 "WARN_WALL", &warn_wall,
2321 "MODE", &mode,
2322 "WALL_MESSAGE", &wall_message,
2323 "UID", &uid,
2324 "TTY", &tty);
2325
2326 /* reset will delete the file */
2327 reset_scheduled_shutdown(m);
2328
2329 if (r == -ENOENT)
2330 return;
2331 if (r < 0)
2332 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2333
2334 HandleAction handle = handle_action_from_string(mode);
2335 if (handle < 0)
2336 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2337
2338 if (!usec)
2339 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2340 if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2341 return;
2342
2343 /* assign parsed type only after we know usec is also valid */
2344 m->scheduled_shutdown_action = handle;
2345
2346 if (warn_wall) {
2347 r = parse_boolean(warn_wall);
2348 if (r < 0)
2349 log_debug_errno(r, "Failed to parse enabling wall messages");
2350 else
2351 m->enable_wall_messages = r;
2352 }
2353
2354 if (wall_message) {
2355 _cleanup_free_ char *unescaped = NULL;
2356 r = cunescape(wall_message, 0, &unescaped);
2357 if (r < 0)
2358 log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2359 else
2360 free_and_replace(m->wall_message, unescaped);
2361 }
2362
2363 if (uid) {
2364 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2365 if (r < 0)
2366 log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2367 }
2368
2369 free_and_replace(m->scheduled_shutdown_tty, tty);
2370
2371 r = manager_setup_shutdown_timers(m);
2372 if (r < 0)
2373 return reset_scheduled_shutdown(m);
2374
2375 (void) manager_setup_wall_message_timer(m);
2376 (void) update_schedule_file(m);
2377
2378 return;
2379 }
2380
2381 static int update_schedule_file(Manager *m) {
2382 _cleanup_(unlink_and_freep) char *temp_path = NULL;
2383 _cleanup_fclose_ FILE *f = NULL;
2384 int r;
2385
2386 assert(m);
2387 assert(handle_action_valid(m->scheduled_shutdown_action));
2388
2389 r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2390 if (r < 0)
2391 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2392
2393 r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2394 if (r < 0)
2395 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2396
2397 (void) fchmod(fileno(f), 0644);
2398
2399 serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2400 serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2401 serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2402 serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2403
2404 if (m->scheduled_shutdown_tty)
2405 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2406
2407 if (!isempty(m->wall_message)) {
2408 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2409 if (r < 0)
2410 goto fail;
2411 }
2412
2413 r = fflush_and_check(f);
2414 if (r < 0)
2415 goto fail;
2416
2417 if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2418 r = -errno;
2419 goto fail;
2420 }
2421
2422 temp_path = mfree(temp_path);
2423 return 0;
2424
2425 fail:
2426 (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2427
2428 return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2429 }
2430
2431 static void reset_scheduled_shutdown(Manager *m) {
2432 assert(m);
2433
2434 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2435 m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2436 m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2437
2438 m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2439 m->scheduled_shutdown_timeout = USEC_INFINITY;
2440 m->scheduled_shutdown_uid = UID_INVALID;
2441 m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2442 m->shutdown_dry_run = false;
2443
2444 if (m->unlink_nologin) {
2445 (void) unlink_or_warn("/run/nologin");
2446 m->unlink_nologin = false;
2447 }
2448
2449 (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2450 }
2451
2452 static int manager_scheduled_shutdown_handler(
2453 sd_event_source *s,
2454 uint64_t usec,
2455 void *userdata) {
2456
2457 Manager *m = ASSERT_PTR(userdata);
2458 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2459 const HandleActionData *a;
2460 int r;
2461
2462 assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2463
2464 /* Don't allow multiple jobs being executed at the same time */
2465 if (m->delayed_action) {
2466 r = log_error_errno(SYNTHETIC_ERRNO(EALREADY),
2467 "Scheduled shutdown to %s failed: shutdown or sleep operation already in progress.",
2468 a->target);
2469 goto error;
2470 }
2471
2472 if (m->shutdown_dry_run) {
2473 /* We do not process delay inhibitors here. Otherwise, we
2474 * would have to be considered "in progress" (like the check
2475 * above) for some seconds after our admin has seen the final
2476 * wall message. */
2477
2478 bus_manager_log_shutdown(m, a);
2479 log_info("Running in dry run, suppressing action.");
2480 reset_scheduled_shutdown(m);
2481
2482 return 0;
2483 }
2484
2485 r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2486 if (r < 0) {
2487 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2488 goto error;
2489 }
2490
2491 return 0;
2492
2493 error:
2494 reset_scheduled_shutdown(m);
2495 return r;
2496 }
2497
2498 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2499 Manager *m = ASSERT_PTR(userdata);
2500 HandleAction handle;
2501 const HandleActionData *a;
2502 uint64_t elapse;
2503 char *type;
2504 int r;
2505 bool dry_run = false;
2506
2507 assert(message);
2508
2509 r = sd_bus_message_read(message, "st", &type, &elapse);
2510 if (r < 0)
2511 return r;
2512
2513 if (startswith(type, "dry-")) {
2514 type += 4;
2515 dry_run = true;
2516 }
2517
2518 handle = handle_action_from_string(type);
2519 if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2520 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2521
2522 assert_se(a = handle_action_lookup(handle));
2523 assert(a->polkit_action);
2524
2525 r = verify_shutdown_creds(m, message, a, 0, error);
2526 if (r != 0)
2527 return r;
2528
2529 m->scheduled_shutdown_action = handle;
2530 m->shutdown_dry_run = dry_run;
2531 m->scheduled_shutdown_timeout = elapse;
2532
2533 r = manager_setup_shutdown_timers(m);
2534 if (r < 0)
2535 return r;
2536
2537 r = setup_wall_message_timer(m, message);
2538 if (r >= 0)
2539 r = update_schedule_file(m);
2540
2541 if (r < 0) {
2542 reset_scheduled_shutdown(m);
2543 return r;
2544 }
2545
2546 return sd_bus_reply_method_return(message, NULL);
2547 }
2548
2549 static int manager_setup_shutdown_timers(Manager* m) {
2550 int r;
2551
2552 r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2553 CLOCK_REALTIME,
2554 m->scheduled_shutdown_timeout, 0,
2555 manager_scheduled_shutdown_handler, m,
2556 0, "scheduled-shutdown-timeout", true);
2557 if (r < 0)
2558 goto fail;
2559
2560 r = event_reset_time(m->event, &m->nologin_timeout_source,
2561 CLOCK_REALTIME,
2562 nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2563 nologin_timeout_handler, m,
2564 0, "nologin-timeout", true);
2565 if (r < 0)
2566 goto fail;
2567
2568 return 0;
2569
2570 fail:
2571 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2572 m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2573
2574 return r;
2575 }
2576
2577 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2578 Manager *m = ASSERT_PTR(userdata);
2579 const HandleActionData *a;
2580 bool cancelled;
2581 int r;
2582
2583 assert(message);
2584
2585 cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2586 if (!cancelled)
2587 return sd_bus_reply_method_return(message, "b", false);
2588
2589 assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2590 if (!a->polkit_action)
2591 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2592
2593 r = bus_verify_polkit_async(
2594 message,
2595 a->polkit_action,
2596 /* details= */ NULL,
2597 &m->polkit_registry,
2598 error);
2599 if (r < 0)
2600 return r;
2601 if (r == 0)
2602 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2603
2604 if (m->enable_wall_messages) {
2605 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2606 const char *tty = NULL;
2607 uid_t uid = 0;
2608
2609 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2610 if (r >= 0) {
2611 (void) sd_bus_creds_get_uid(creds, &uid);
2612 (void) sd_bus_creds_get_tty(creds, &tty);
2613 }
2614
2615 _cleanup_free_ char *username = uid_to_name(uid);
2616
2617 log_struct(LOG_INFO,
2618 LOG_MESSAGE("System shutdown has been cancelled"),
2619 "ACTION=%s", handle_action_to_string(a->handle),
2620 "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2621 username ? "OPERATOR=%s" : NULL, username);
2622
2623 (void) wall("System shutdown has been cancelled",
2624 username, tty, logind_wall_tty_filter, m);
2625 }
2626
2627 reset_scheduled_shutdown(m);
2628
2629 return sd_bus_reply_method_return(message, "b", true);
2630 }
2631
2632 static int method_can_shutdown_or_sleep(
2633 Manager *m,
2634 sd_bus_message *message,
2635 HandleAction action,
2636 sd_bus_error *error) {
2637
2638 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2639 bool multiple_sessions, challenge, blocked, check_unit_state = true;
2640 const HandleActionData *a;
2641 const char *result = NULL;
2642 uid_t uid;
2643 int r;
2644
2645 assert(m);
2646 assert(message);
2647 assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2648
2649 if (action == HANDLE_SLEEP) {
2650 HandleAction selected;
2651
2652 selected = handle_action_sleep_select(m);
2653 if (selected < 0)
2654 return sd_bus_reply_method_return(message, "s", "na");
2655
2656 check_unit_state = false; /* Already handled by handle_action_sleep_select */
2657
2658 assert_se(a = handle_action_lookup(selected));
2659
2660 } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2661 SleepSupport support;
2662
2663 assert_se(a = handle_action_lookup(action));
2664
2665 assert(a->sleep_operation >= 0);
2666 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2667
2668 r = sleep_supported_full(a->sleep_operation, &support);
2669 if (r < 0)
2670 return r;
2671 if (r == 0)
2672 return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2673 } else
2674 assert_se(a = handle_action_lookup(action));
2675
2676 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2677 if (r < 0)
2678 return r;
2679
2680 r = sd_bus_creds_get_euid(creds, &uid);
2681 if (r < 0)
2682 return r;
2683
2684 r = have_multiple_sessions(m, uid);
2685 if (r < 0)
2686 return r;
2687
2688 multiple_sessions = r > 0;
2689 blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2690
2691 if (check_unit_state && a->target) {
2692 _cleanup_free_ char *load_state = NULL;
2693
2694 r = unit_load_state(m->bus, a->target, &load_state);
2695 if (r < 0)
2696 return r;
2697
2698 if (!streq(load_state, "loaded")) {
2699 result = "no";
2700 goto finish;
2701 }
2702 }
2703
2704 if (multiple_sessions) {
2705 r = bus_test_polkit(
2706 message,
2707 a->polkit_action_multiple_sessions,
2708 /* details= */ NULL,
2709 /* good_user= */ UID_INVALID,
2710 &challenge,
2711 error);
2712 if (r < 0)
2713 return r;
2714
2715 if (r > 0)
2716 result = "yes";
2717 else if (challenge)
2718 result = "challenge";
2719 else
2720 result = "no";
2721 }
2722
2723 if (blocked) {
2724 r = bus_test_polkit(
2725 message,
2726 a->polkit_action_ignore_inhibit,
2727 /* details= */ NULL,
2728 /* good_user= */ UID_INVALID,
2729 &challenge,
2730 error);
2731 if (r < 0)
2732 return r;
2733
2734 if (r > 0) {
2735 if (!result)
2736 result = "yes";
2737 } else if (challenge) {
2738 if (!result || streq(result, "yes"))
2739 result = "challenge";
2740 } else
2741 result = "no";
2742 }
2743
2744 if (!multiple_sessions && !blocked) {
2745 /* If neither inhibit nor multiple sessions
2746 * apply then just check the normal policy */
2747
2748 r = bus_test_polkit(
2749 message,
2750 a->polkit_action,
2751 /* details= */ NULL,
2752 /* good_user= */ UID_INVALID,
2753 &challenge,
2754 error);
2755 if (r < 0)
2756 return r;
2757
2758 if (r > 0)
2759 result = "yes";
2760 else if (challenge)
2761 result = "challenge";
2762 else
2763 result = "no";
2764 }
2765
2766 finish:
2767 return sd_bus_reply_method_return(message, "s", result);
2768 }
2769
2770 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2771 Manager *m = userdata;
2772
2773 return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2774 }
2775
2776 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2777 Manager *m = userdata;
2778
2779 return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2780 }
2781
2782 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2783 Manager *m = userdata;
2784
2785 return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2786 }
2787
2788 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2789 Manager *m = userdata;
2790
2791 return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2792 }
2793
2794 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2795 Manager *m = userdata;
2796
2797 return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2798 }
2799
2800 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2801 Manager *m = userdata;
2802
2803 return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2804 }
2805
2806 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2807 Manager *m = userdata;
2808
2809 return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2810 }
2811
2812 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2813 Manager *m = userdata;
2814
2815 return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2816 }
2817
2818 static int property_get_reboot_parameter(
2819 sd_bus *bus,
2820 const char *path,
2821 const char *interface,
2822 const char *property,
2823 sd_bus_message *reply,
2824 void *userdata,
2825 sd_bus_error *error) {
2826 _cleanup_free_ char *parameter = NULL;
2827 int r;
2828
2829 assert(bus);
2830 assert(reply);
2831 assert(userdata);
2832
2833 r = read_reboot_parameter(&parameter);
2834 if (r < 0)
2835 return r;
2836
2837 return sd_bus_message_append(reply, "s", parameter);
2838 }
2839
2840 static int method_set_reboot_parameter(
2841 sd_bus_message *message,
2842 void *userdata,
2843 sd_bus_error *error) {
2844
2845 Manager *m = ASSERT_PTR(userdata);
2846 const char *arg;
2847 int r;
2848
2849 assert(message);
2850
2851 r = sd_bus_message_read(message, "s", &arg);
2852 if (r < 0)
2853 return r;
2854
2855 r = detect_container();
2856 if (r < 0)
2857 return r;
2858 if (r > 0)
2859 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2860 "Reboot parameter not supported in containers, refusing.");
2861
2862 r = bus_verify_polkit_async(
2863 message,
2864 "org.freedesktop.login1.set-reboot-parameter",
2865 /* details= */ NULL,
2866 &m->polkit_registry,
2867 error);
2868 if (r < 0)
2869 return r;
2870 if (r == 0)
2871 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2872
2873 r = update_reboot_parameter_and_warn(arg, false);
2874 if (r < 0)
2875 return r;
2876
2877 return sd_bus_reply_method_return(message, NULL);
2878 }
2879
2880 static int method_can_reboot_parameter(
2881 sd_bus_message *message,
2882 void *userdata,
2883 sd_bus_error *error) {
2884
2885 _unused_ Manager *m = ASSERT_PTR(userdata);
2886 int r;
2887
2888 assert(message);
2889
2890 r = detect_container();
2891 if (r < 0)
2892 return r;
2893 if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2894 return sd_bus_reply_method_return(message, "s", "na");
2895
2896 return return_test_polkit(
2897 message,
2898 "org.freedesktop.login1.set-reboot-parameter",
2899 /* details= */ NULL,
2900 /* good_user= */ UID_INVALID,
2901 error);
2902 }
2903
2904 static int property_get_reboot_to_firmware_setup(
2905 sd_bus *bus,
2906 const char *path,
2907 const char *interface,
2908 const char *property,
2909 sd_bus_message *reply,
2910 void *userdata,
2911 sd_bus_error *error) {
2912 int r;
2913
2914 assert(bus);
2915 assert(reply);
2916 assert(userdata);
2917
2918 r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2919 if (r == -ENXIO) {
2920 /* EFI case: let's see what is currently configured in the EFI variables */
2921 r = efi_get_reboot_to_firmware();
2922 if (r < 0 && r != -EOPNOTSUPP)
2923 log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2924 } else if (r < 0)
2925 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2926 else if (r > 0) {
2927 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2928 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2929 if (errno != ENOENT)
2930 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2931
2932 r = false;
2933 } else
2934 r = true;
2935 }
2936
2937 return sd_bus_message_append(reply, "b", r > 0);
2938 }
2939
2940 static int method_set_reboot_to_firmware_setup(
2941 sd_bus_message *message,
2942 void *userdata,
2943 sd_bus_error *error) {
2944
2945 Manager *m = ASSERT_PTR(userdata);
2946 bool use_efi;
2947 int b, r;
2948
2949 assert(message);
2950
2951 r = sd_bus_message_read(message, "b", &b);
2952 if (r < 0)
2953 return r;
2954
2955 r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2956 if (r == -ENXIO) {
2957 /* EFI case: let's see what the firmware supports */
2958
2959 r = efi_reboot_to_firmware_supported();
2960 if (r == -EOPNOTSUPP)
2961 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2962 if (r < 0)
2963 return r;
2964
2965 use_efi = true;
2966
2967 } else if (r <= 0) {
2968 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2969
2970 if (r < 0)
2971 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2972
2973 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2974 } else
2975 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2976 use_efi = false;
2977
2978 r = bus_verify_polkit_async(
2979 message,
2980 "org.freedesktop.login1.set-reboot-to-firmware-setup",
2981 /* details= */ NULL,
2982 &m->polkit_registry,
2983 error);
2984 if (r < 0)
2985 return r;
2986 if (r == 0)
2987 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2988
2989 if (use_efi) {
2990 r = efi_set_reboot_to_firmware(b);
2991 if (r < 0)
2992 return r;
2993 } else {
2994 if (b) {
2995 r = touch("/run/systemd/reboot-to-firmware-setup");
2996 if (r < 0)
2997 return r;
2998 } else {
2999 if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
3000 return -errno;
3001 }
3002 }
3003
3004 return sd_bus_reply_method_return(message, NULL);
3005 }
3006
3007 static int method_can_reboot_to_firmware_setup(
3008 sd_bus_message *message,
3009 void *userdata,
3010 sd_bus_error *error) {
3011
3012 _unused_ Manager *m = ASSERT_PTR(userdata);
3013 int r;
3014
3015 assert(message);
3016
3017 r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
3018 if (r == -ENXIO) {
3019 /* EFI case: let's see what the firmware supports */
3020
3021 r = efi_reboot_to_firmware_supported();
3022 if (r < 0) {
3023 if (r != -EOPNOTSUPP)
3024 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
3025
3026 return sd_bus_reply_method_return(message, "s", "na");
3027 }
3028
3029 } else if (r <= 0) {
3030 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
3031
3032 if (r < 0)
3033 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
3034
3035 return sd_bus_reply_method_return(message, "s", "na");
3036 }
3037
3038 return return_test_polkit(
3039 message,
3040 "org.freedesktop.login1.set-reboot-to-firmware-setup",
3041 /* details= */ NULL,
3042 /* good_user= */ UID_INVALID,
3043 error);
3044 }
3045
3046 static int property_get_reboot_to_boot_loader_menu(
3047 sd_bus *bus,
3048 const char *path,
3049 const char *interface,
3050 const char *property,
3051 sd_bus_message *reply,
3052 void *userdata,
3053 sd_bus_error *error) {
3054
3055 uint64_t x = UINT64_MAX;
3056 int r;
3057
3058 assert(bus);
3059 assert(reply);
3060 assert(userdata);
3061
3062 r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3063 if (r == -ENXIO) {
3064 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
3065 *
3066 * 1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
3067 * 2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
3068 * 3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
3069 */
3070
3071 r = efi_loader_get_config_timeout_one_shot(&x);
3072 if (r < 0) {
3073 if (r != -ENOENT)
3074 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3075 }
3076
3077 } else if (r < 0)
3078 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3079 else if (r > 0) {
3080 _cleanup_free_ char *v = NULL;
3081
3082 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3083
3084 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3085 if (r < 0) {
3086 if (r != -ENOENT)
3087 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3088 } else {
3089 r = safe_atou64(v, &x);
3090 if (r < 0)
3091 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3092 }
3093 }
3094
3095 return sd_bus_message_append(reply, "t", x);
3096 }
3097
3098 static int method_set_reboot_to_boot_loader_menu(
3099 sd_bus_message *message,
3100 void *userdata,
3101 sd_bus_error *error) {
3102
3103 Manager *m = ASSERT_PTR(userdata);
3104 bool use_efi;
3105 uint64_t x;
3106 int r;
3107
3108 assert(message);
3109
3110 r = sd_bus_message_read(message, "t", &x);
3111 if (r < 0)
3112 return r;
3113
3114 r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3115 if (r == -ENXIO) {
3116 uint64_t features;
3117
3118 /* EFI case: let's see if booting into boot loader menu is supported. */
3119
3120 r = efi_loader_get_features(&features);
3121 if (r < 0)
3122 log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3123 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3124 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3125
3126 use_efi = true;
3127
3128 } else if (r <= 0) {
3129 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3130
3131 if (r < 0)
3132 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3133
3134 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3135 } else
3136 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3137 use_efi = false;
3138
3139 r = bus_verify_polkit_async(
3140 message,
3141 "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3142 /* details= */ NULL,
3143 &m->polkit_registry,
3144 error);
3145 if (r < 0)
3146 return r;
3147 if (r == 0)
3148 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3149
3150 if (use_efi) {
3151 if (x == UINT64_MAX)
3152 r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3153 else {
3154 char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3155 xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3156
3157 r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3158 }
3159 if (r < 0)
3160 return r;
3161 } else {
3162 if (x == UINT64_MAX) {
3163 if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3164 return -errno;
3165 } else {
3166 char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3167
3168 xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3169
3170 r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3171 if (r < 0)
3172 return r;
3173 }
3174 }
3175
3176 return sd_bus_reply_method_return(message, NULL);
3177 }
3178
3179 static int method_can_reboot_to_boot_loader_menu(
3180 sd_bus_message *message,
3181 void *userdata,
3182 sd_bus_error *error) {
3183
3184 _unused_ Manager *m = ASSERT_PTR(userdata);
3185 int r;
3186
3187 assert(message);
3188
3189 r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3190 if (r == -ENXIO) {
3191 uint64_t features = 0;
3192
3193 /* EFI case, let's see if booting into boot loader menu is supported. */
3194
3195 r = efi_loader_get_features(&features);
3196 if (r < 0)
3197 log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3198 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3199 return sd_bus_reply_method_return(message, "s", "na");
3200
3201 } else if (r <= 0) {
3202 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3203
3204 if (r < 0)
3205 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3206
3207 return sd_bus_reply_method_return(message, "s", "na");
3208 }
3209
3210 return return_test_polkit(
3211 message,
3212 "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3213 /* details= */ NULL,
3214 /* good_user= */ UID_INVALID,
3215 error);
3216 }
3217
3218 static int property_get_reboot_to_boot_loader_entry(
3219 sd_bus *bus,
3220 const char *path,
3221 const char *interface,
3222 const char *property,
3223 sd_bus_message *reply,
3224 void *userdata,
3225 sd_bus_error *error) {
3226
3227 _cleanup_free_ char *v = NULL;
3228 Manager *m = ASSERT_PTR(userdata);
3229 const char *x = NULL;
3230 int r;
3231
3232 assert(bus);
3233 assert(reply);
3234
3235 r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3236 if (r == -ENXIO) {
3237 /* EFI case: let's read the LoaderEntryOneShot variable */
3238
3239 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3240 if (r < 0) {
3241 if (r != -ENOENT)
3242 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3243 } else
3244 x = m->efi_loader_entry_one_shot;
3245
3246 } else if (r < 0)
3247 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3248 else if (r > 0) {
3249
3250 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3251
3252 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3253 if (r < 0) {
3254 if (r != -ENOENT)
3255 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3256 } else if (!efi_loader_entry_name_valid(v))
3257 log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3258 else
3259 x = v;
3260 }
3261
3262 return sd_bus_message_append(reply, "s", x);
3263 }
3264
3265 static int boot_loader_entry_exists(Manager *m, const char *id) {
3266 _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3267 int r;
3268
3269 assert(m);
3270 assert(id);
3271
3272 r = boot_config_load_auto(&config, NULL, NULL);
3273 if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3274 return r;
3275
3276 r = manager_read_efi_boot_loader_entries(m);
3277 if (r >= 0)
3278 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3279
3280 return !!boot_config_find_entry(&config, id);
3281 }
3282
3283 static int method_set_reboot_to_boot_loader_entry(
3284 sd_bus_message *message,
3285 void *userdata,
3286 sd_bus_error *error) {
3287
3288 Manager *m = ASSERT_PTR(userdata);
3289 bool use_efi;
3290 const char *v;
3291 int r;
3292
3293 assert(message);
3294
3295 r = sd_bus_message_read(message, "s", &v);
3296 if (r < 0)
3297 return r;
3298
3299 if (isempty(v))
3300 v = NULL;
3301 else if (efi_loader_entry_name_valid(v)) {
3302 r = boot_loader_entry_exists(m, v);
3303 if (r < 0)
3304 return r;
3305 if (r == 0)
3306 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3307 } else
3308 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3309
3310 r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3311 if (r == -ENXIO) {
3312 uint64_t features;
3313
3314 /* EFI case: let's see if booting into boot loader entry is supported. */
3315
3316 r = efi_loader_get_features(&features);
3317 if (r < 0)
3318 log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3319 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3320 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3321
3322 use_efi = true;
3323
3324 } else if (r <= 0) {
3325 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3326
3327 if (r < 0)
3328 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3329
3330 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3331 } else
3332 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3333 use_efi = false;
3334
3335 r = bus_verify_polkit_async(
3336 message,
3337 "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3338 /* details= */ NULL,
3339 &m->polkit_registry,
3340 error);
3341 if (r < 0)
3342 return r;
3343 if (r == 0)
3344 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3345
3346 if (use_efi) {
3347 if (isempty(v))
3348 /* Delete item */
3349 r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3350 else
3351 r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3352 if (r < 0)
3353 return r;
3354 } else {
3355 if (isempty(v)) {
3356 if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3357 return -errno;
3358 } else {
3359 r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3360 if (r < 0)
3361 return r;
3362 }
3363 }
3364
3365 return sd_bus_reply_method_return(message, NULL);
3366 }
3367
3368 static int method_can_reboot_to_boot_loader_entry(
3369 sd_bus_message *message,
3370 void *userdata,
3371 sd_bus_error *error) {
3372
3373 _unused_ Manager *m = ASSERT_PTR(userdata);
3374 int r;
3375
3376 assert(message);
3377
3378 r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3379 if (r == -ENXIO) {
3380 uint64_t features = 0;
3381
3382 /* EFI case, let's see if booting into boot loader entry is supported. */
3383
3384 r = efi_loader_get_features(&features);
3385 if (r < 0)
3386 log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3387 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3388 return sd_bus_reply_method_return(message, "s", "na");
3389
3390 } else if (r <= 0) {
3391 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3392
3393 if (r < 0)
3394 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3395
3396 return sd_bus_reply_method_return(message, "s", "na");
3397 }
3398
3399 return return_test_polkit(
3400 message,
3401 "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3402 /* details= */ NULL,
3403 /* good_user= */ UID_INVALID,
3404 error);
3405 }
3406
3407 static int property_get_boot_loader_entries(
3408 sd_bus *bus,
3409 const char *path,
3410 const char *interface,
3411 const char *property,
3412 sd_bus_message *reply,
3413 void *userdata,
3414 sd_bus_error *error) {
3415
3416 _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3417 Manager *m = ASSERT_PTR(userdata);
3418 size_t i;
3419 int r;
3420
3421 assert(bus);
3422 assert(reply);
3423
3424 r = boot_config_load_auto(&config, NULL, NULL);
3425 if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3426 return r;
3427
3428 r = manager_read_efi_boot_loader_entries(m);
3429 if (r >= 0)
3430 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3431
3432 r = sd_bus_message_open_container(reply, 'a', "s");
3433 if (r < 0)
3434 return r;
3435
3436 for (i = 0; i < config.n_entries; i++) {
3437 BootEntry *e = config.entries + i;
3438
3439 r = sd_bus_message_append(reply, "s", e->id);
3440 if (r < 0)
3441 return r;
3442 }
3443
3444 return sd_bus_message_close_container(reply);
3445 }
3446
3447 static int method_set_wall_message(
3448 sd_bus_message *message,
3449 void *userdata,
3450 sd_bus_error *error) {
3451
3452 int r;
3453 Manager *m = ASSERT_PTR(userdata);
3454 char *wall_message;
3455 int enable_wall_messages;
3456
3457 assert(message);
3458
3459 r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3460 if (r < 0)
3461 return r;
3462
3463 if (strlen(wall_message) > WALL_MESSAGE_MAX)
3464 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3465 "Wall message too long, maximum permitted length is %u characters.",
3466 WALL_MESSAGE_MAX);
3467
3468 /* Short-circuit the operation if the desired state is already in place, to
3469 * avoid an unnecessary polkit permission check. */
3470 if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3471 m->enable_wall_messages == enable_wall_messages)
3472 goto done;
3473
3474 r = bus_verify_polkit_async(
3475 message,
3476 "org.freedesktop.login1.set-wall-message",
3477 /* details= */ NULL,
3478 &m->polkit_registry,
3479 error);
3480 if (r < 0)
3481 return r;
3482 if (r == 0)
3483 return 1; /* Will call us back */
3484
3485 r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3486 if (r < 0)
3487 return log_oom();
3488
3489 m->enable_wall_messages = enable_wall_messages;
3490
3491 done:
3492 return sd_bus_reply_method_return(message, NULL);
3493 }
3494
3495 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3496 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3497 _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3498 const char *who, *why, *what, *mode;
3499 _cleanup_free_ char *id = NULL;
3500 _cleanup_close_ int fifo_fd = -EBADF;
3501 Manager *m = ASSERT_PTR(userdata);
3502 InhibitMode mm;
3503 InhibitWhat w;
3504 pid_t pid;
3505 uid_t uid;
3506 int r;
3507
3508 assert(message);
3509
3510 r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3511 if (r < 0)
3512 return r;
3513
3514 w = inhibit_what_from_string(what);
3515 if (w <= 0)
3516 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3517 "Invalid what specification %s", what);
3518
3519 mm = inhibit_mode_from_string(mode);
3520 if (mm < 0)
3521 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3522 "Invalid mode specification %s", mode);
3523
3524 /* Delay is only supported for shutdown/sleep */
3525 if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3526 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3527 "Delay inhibitors only supported for shutdown and sleep");
3528
3529 /* Don't allow taking delay locks while we are already
3530 * executing the operation. We shouldn't create the impression
3531 * that the lock was successful if the machine is about to go
3532 * down/suspend any moment. */
3533 if (m->delayed_action && m->delayed_action->inhibit_what & w)
3534 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3535 "The operation inhibition has been requested for is already running");
3536
3537 r = bus_verify_polkit_async(
3538 message,
3539 w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3540 w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") :
3541 w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" :
3542 w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" :
3543 w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3544 w == INHIBIT_HANDLE_REBOOT_KEY ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3545 w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3546 "org.freedesktop.login1.inhibit-handle-lid-switch",
3547 /* details= */ NULL,
3548 &m->polkit_registry,
3549 error);
3550 if (r < 0)
3551 return r;
3552 if (r == 0)
3553 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3554
3555 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3556 if (r < 0)
3557 return r;
3558
3559 r = sd_bus_creds_get_euid(creds, &uid);
3560 if (r < 0)
3561 return r;
3562
3563 r = sd_bus_creds_get_pid(creds, &pid);
3564 if (r < 0)
3565 return r;
3566
3567 r = pidref_set_pid(&pidref, pid);
3568 if (r < 0)
3569 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3570
3571 if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3572 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3573 "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3574 m->inhibitors_max);
3575
3576 do {
3577 id = mfree(id);
3578
3579 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3580 return -ENOMEM;
3581
3582 } while (hashmap_get(m->inhibitors, id));
3583
3584 _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3585 r = manager_add_inhibitor(m, id, &i);
3586 if (r < 0)
3587 return r;
3588
3589 i->what = w;
3590 i->mode = mm;
3591 i->pid = TAKE_PIDREF(pidref);
3592 i->uid = uid;
3593 i->why = strdup(why);
3594 i->who = strdup(who);
3595
3596 if (!i->why || !i->who)
3597 return -ENOMEM;
3598
3599 fifo_fd = inhibitor_create_fifo(i);
3600 if (fifo_fd < 0)
3601 return fifo_fd;
3602
3603 r = inhibitor_start(i);
3604 if (r < 0)
3605 return r;
3606 TAKE_PTR(i);
3607
3608 return sd_bus_reply_method_return(message, "h", fifo_fd);
3609 }
3610
3611 static const sd_bus_vtable manager_vtable[] = {
3612 SD_BUS_VTABLE_START(0),
3613
3614 SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3615 SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3616
3617 SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3618 SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3619 SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3620 SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3621 SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3622 SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3623 SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3624 SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3625 SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3626 SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3627 SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3628 SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3629 SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3630 SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3631 SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3632 SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3633 SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3634 SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3635 SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3636 SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3637 SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3638 SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3639 SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3640 SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3641 SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3642 SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3643 SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3644 SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3645 SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3646 SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3647 SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3648 SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3649 SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3650 SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3651 SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3652 SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3653 SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3654 SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3655 SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3656 SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3657 SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3658 SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3659 SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3660 SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3661 SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3662 SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3663
3664 SD_BUS_METHOD_WITH_ARGS("GetSession",
3665 SD_BUS_ARGS("s", session_id),
3666 SD_BUS_RESULT("o", object_path),
3667 method_get_session,
3668 SD_BUS_VTABLE_UNPRIVILEGED),
3669 SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3670 SD_BUS_ARGS("u", pid),
3671 SD_BUS_RESULT("o", object_path),
3672 method_get_session_by_pid,
3673 SD_BUS_VTABLE_UNPRIVILEGED),
3674 SD_BUS_METHOD_WITH_ARGS("GetUser",
3675 SD_BUS_ARGS("u", uid),
3676 SD_BUS_RESULT("o", object_path),
3677 method_get_user,
3678 SD_BUS_VTABLE_UNPRIVILEGED),
3679 SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3680 SD_BUS_ARGS("u", pid),
3681 SD_BUS_RESULT("o", object_path),
3682 method_get_user_by_pid,
3683 SD_BUS_VTABLE_UNPRIVILEGED),
3684 SD_BUS_METHOD_WITH_ARGS("GetSeat",
3685 SD_BUS_ARGS("s", seat_id),
3686 SD_BUS_RESULT("o", object_path),
3687 method_get_seat,
3688 SD_BUS_VTABLE_UNPRIVILEGED),
3689 SD_BUS_METHOD_WITH_ARGS("ListSessions",
3690 SD_BUS_NO_ARGS,
3691 SD_BUS_RESULT("a(susso)", sessions),
3692 method_list_sessions,
3693 SD_BUS_VTABLE_UNPRIVILEGED),
3694 SD_BUS_METHOD_WITH_ARGS("ListSessionsEx",
3695 SD_BUS_NO_ARGS,
3696 SD_BUS_RESULT("a(sussussbto)", sessions),
3697 method_list_sessions_ex,
3698 SD_BUS_VTABLE_UNPRIVILEGED),
3699 SD_BUS_METHOD_WITH_ARGS("ListUsers",
3700 SD_BUS_NO_ARGS,
3701 SD_BUS_RESULT("a(uso)", users),
3702 method_list_users,
3703 SD_BUS_VTABLE_UNPRIVILEGED),
3704 SD_BUS_METHOD_WITH_ARGS("ListSeats",
3705 SD_BUS_NO_ARGS,
3706 SD_BUS_RESULT("a(so)", seats),
3707 method_list_seats,
3708 SD_BUS_VTABLE_UNPRIVILEGED),
3709 SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3710 SD_BUS_NO_ARGS,
3711 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3712 method_list_inhibitors,
3713 SD_BUS_VTABLE_UNPRIVILEGED),
3714 SD_BUS_METHOD_WITH_ARGS("CreateSession",
3715 SD_BUS_ARGS("u", uid,
3716 "u", pid,
3717 "s", service,
3718 "s", type,
3719 "s", class,
3720 "s", desktop,
3721 "s", seat_id,
3722 "u", vtnr,
3723 "s", tty,
3724 "s", display,
3725 "b", remote,
3726 "s", remote_user,
3727 "s", remote_host,
3728 "a(sv)", properties),
3729 SD_BUS_RESULT("s", session_id,
3730 "o", object_path,
3731 "s", runtime_path,
3732 "h", fifo_fd,
3733 "u", uid,
3734 "s", seat_id,
3735 "u", vtnr,
3736 "b", existing),
3737 method_create_session,
3738 0),
3739 SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3740 SD_BUS_ARGS("u", uid,
3741 "h", pidfd,
3742 "s", service,
3743 "s", type,
3744 "s", class,
3745 "s", desktop,
3746 "s", seat_id,
3747 "u", vtnr,
3748 "s", tty,
3749 "s", display,
3750 "b", remote,
3751 "s", remote_user,
3752 "s", remote_host,
3753 "t", flags,
3754 "a(sv)", properties),
3755 SD_BUS_RESULT("s", session_id,
3756 "o", object_path,
3757 "s", runtime_path,
3758 "h", fifo_fd,
3759 "u", uid,
3760 "s", seat_id,
3761 "u", vtnr,
3762 "b", existing),
3763 method_create_session_pidfd,
3764 0),
3765 SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3766 SD_BUS_ARGS("s", session_id),
3767 SD_BUS_NO_RESULT,
3768 method_release_session,
3769 0),
3770 SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3771 SD_BUS_ARGS("s", session_id),
3772 SD_BUS_NO_RESULT,
3773 method_activate_session,
3774 SD_BUS_VTABLE_UNPRIVILEGED),
3775 SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3776 SD_BUS_ARGS("s", session_id, "s", seat_id),
3777 SD_BUS_NO_RESULT,
3778 method_activate_session_on_seat,
3779 SD_BUS_VTABLE_UNPRIVILEGED),
3780 SD_BUS_METHOD_WITH_ARGS("LockSession",
3781 SD_BUS_ARGS("s", session_id),
3782 SD_BUS_NO_RESULT,
3783 method_lock_session,
3784 SD_BUS_VTABLE_UNPRIVILEGED),
3785 SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3786 SD_BUS_ARGS("s", session_id),
3787 SD_BUS_NO_RESULT,
3788 method_lock_session,
3789 SD_BUS_VTABLE_UNPRIVILEGED),
3790 SD_BUS_METHOD("LockSessions",
3791 NULL,
3792 NULL,
3793 method_lock_sessions,
3794 SD_BUS_VTABLE_UNPRIVILEGED),
3795 SD_BUS_METHOD("UnlockSessions",
3796 NULL,
3797 NULL,
3798 method_lock_sessions,
3799 SD_BUS_VTABLE_UNPRIVILEGED),
3800 SD_BUS_METHOD_WITH_ARGS("KillSession",
3801 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3802 SD_BUS_NO_RESULT,
3803 method_kill_session,
3804 SD_BUS_VTABLE_UNPRIVILEGED),
3805 SD_BUS_METHOD_WITH_ARGS("KillUser",
3806 SD_BUS_ARGS("u", uid, "i", signal_number),
3807 SD_BUS_NO_RESULT,
3808 method_kill_user,
3809 SD_BUS_VTABLE_UNPRIVILEGED),
3810 SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3811 SD_BUS_ARGS("s", session_id),
3812 SD_BUS_NO_RESULT,
3813 method_terminate_session,
3814 SD_BUS_VTABLE_UNPRIVILEGED),
3815 SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3816 SD_BUS_ARGS("u", uid),
3817 SD_BUS_NO_RESULT,
3818 method_terminate_user,
3819 SD_BUS_VTABLE_UNPRIVILEGED),
3820 SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3821 SD_BUS_ARGS("s", seat_id),
3822 SD_BUS_NO_RESULT,
3823 method_terminate_seat,
3824 SD_BUS_VTABLE_UNPRIVILEGED),
3825 SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3826 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3827 SD_BUS_NO_RESULT,
3828 method_set_user_linger,
3829 SD_BUS_VTABLE_UNPRIVILEGED),
3830 SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3831 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3832 SD_BUS_NO_RESULT,
3833 method_attach_device,
3834 SD_BUS_VTABLE_UNPRIVILEGED),
3835 SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3836 SD_BUS_ARGS("b", interactive),
3837 SD_BUS_NO_RESULT,
3838 method_flush_devices,
3839 SD_BUS_VTABLE_UNPRIVILEGED),
3840 SD_BUS_METHOD_WITH_ARGS("PowerOff",
3841 SD_BUS_ARGS("b", interactive),
3842 SD_BUS_NO_RESULT,
3843 method_poweroff,
3844 SD_BUS_VTABLE_UNPRIVILEGED),
3845 SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3846 SD_BUS_ARGS("t", flags),
3847 SD_BUS_NO_RESULT,
3848 method_poweroff,
3849 SD_BUS_VTABLE_UNPRIVILEGED),
3850 SD_BUS_METHOD_WITH_ARGS("Reboot",
3851 SD_BUS_ARGS("b", interactive),
3852 SD_BUS_NO_RESULT,
3853 method_reboot,
3854 SD_BUS_VTABLE_UNPRIVILEGED),
3855 SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3856 SD_BUS_ARGS("t", flags),
3857 SD_BUS_NO_RESULT,
3858 method_reboot,
3859 SD_BUS_VTABLE_UNPRIVILEGED),
3860 SD_BUS_METHOD_WITH_ARGS("Halt",
3861 SD_BUS_ARGS("b", interactive),
3862 SD_BUS_NO_RESULT,
3863 method_halt,
3864 SD_BUS_VTABLE_UNPRIVILEGED),
3865 SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3866 SD_BUS_ARGS("t", flags),
3867 SD_BUS_NO_RESULT,
3868 method_halt,
3869 SD_BUS_VTABLE_UNPRIVILEGED),
3870 SD_BUS_METHOD_WITH_ARGS("Suspend",
3871 SD_BUS_ARGS("b", interactive),
3872 SD_BUS_NO_RESULT,
3873 method_suspend,
3874 SD_BUS_VTABLE_UNPRIVILEGED),
3875 SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3876 SD_BUS_ARGS("t", flags),
3877 SD_BUS_NO_RESULT,
3878 method_suspend,
3879 SD_BUS_VTABLE_UNPRIVILEGED),
3880 SD_BUS_METHOD_WITH_ARGS("Hibernate",
3881 SD_BUS_ARGS("b", interactive),
3882 SD_BUS_NO_RESULT,
3883 method_hibernate,
3884 SD_BUS_VTABLE_UNPRIVILEGED),
3885 SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3886 SD_BUS_ARGS("t", flags),
3887 SD_BUS_NO_RESULT,
3888 method_hibernate,
3889 SD_BUS_VTABLE_UNPRIVILEGED),
3890 SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3891 SD_BUS_ARGS("b", interactive),
3892 SD_BUS_NO_RESULT,
3893 method_hybrid_sleep,
3894 SD_BUS_VTABLE_UNPRIVILEGED),
3895 SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3896 SD_BUS_ARGS("t", flags),
3897 SD_BUS_NO_RESULT,
3898 method_hybrid_sleep,
3899 SD_BUS_VTABLE_UNPRIVILEGED),
3900 SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3901 SD_BUS_ARGS("b", interactive),
3902 SD_BUS_NO_RESULT,
3903 method_suspend_then_hibernate,
3904 SD_BUS_VTABLE_UNPRIVILEGED),
3905 SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3906 SD_BUS_ARGS("t", flags),
3907 SD_BUS_NO_RESULT,
3908 method_suspend_then_hibernate,
3909 SD_BUS_VTABLE_UNPRIVILEGED),
3910 SD_BUS_METHOD_WITH_ARGS("Sleep",
3911 SD_BUS_ARGS("t", flags),
3912 SD_BUS_NO_RESULT,
3913 method_sleep,
3914 SD_BUS_VTABLE_UNPRIVILEGED),
3915 SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3916 SD_BUS_NO_ARGS,
3917 SD_BUS_RESULT("s", result),
3918 method_can_poweroff,
3919 SD_BUS_VTABLE_UNPRIVILEGED),
3920 SD_BUS_METHOD_WITH_ARGS("CanReboot",
3921 SD_BUS_NO_ARGS,
3922 SD_BUS_RESULT("s", result),
3923 method_can_reboot,
3924 SD_BUS_VTABLE_UNPRIVILEGED),
3925 SD_BUS_METHOD_WITH_ARGS("CanHalt",
3926 SD_BUS_NO_ARGS,
3927 SD_BUS_RESULT("s", result),
3928 method_can_halt,
3929 SD_BUS_VTABLE_UNPRIVILEGED),
3930 SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3931 SD_BUS_NO_ARGS,
3932 SD_BUS_RESULT("s", result),
3933 method_can_suspend,
3934 SD_BUS_VTABLE_UNPRIVILEGED),
3935 SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3936 SD_BUS_NO_ARGS,
3937 SD_BUS_RESULT("s", result),
3938 method_can_hibernate,
3939 SD_BUS_VTABLE_UNPRIVILEGED),
3940 SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3941 SD_BUS_NO_ARGS,
3942 SD_BUS_RESULT("s", result),
3943 method_can_hybrid_sleep,
3944 SD_BUS_VTABLE_UNPRIVILEGED),
3945 SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3946 SD_BUS_NO_ARGS,
3947 SD_BUS_RESULT("s", result),
3948 method_can_suspend_then_hibernate,
3949 SD_BUS_VTABLE_UNPRIVILEGED),
3950 SD_BUS_METHOD_WITH_ARGS("CanSleep",
3951 SD_BUS_NO_ARGS,
3952 SD_BUS_RESULT("s", result),
3953 method_can_sleep,
3954 SD_BUS_VTABLE_UNPRIVILEGED),
3955 SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3956 SD_BUS_ARGS("s", type, "t", usec),
3957 SD_BUS_NO_RESULT,
3958 method_schedule_shutdown,
3959 SD_BUS_VTABLE_UNPRIVILEGED),
3960 SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3961 SD_BUS_NO_ARGS,
3962 SD_BUS_RESULT("b", cancelled),
3963 method_cancel_scheduled_shutdown,
3964 SD_BUS_VTABLE_UNPRIVILEGED),
3965 SD_BUS_METHOD_WITH_ARGS("Inhibit",
3966 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3967 SD_BUS_RESULT("h", pipe_fd),
3968 method_inhibit,
3969 SD_BUS_VTABLE_UNPRIVILEGED),
3970 SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3971 SD_BUS_NO_ARGS,
3972 SD_BUS_RESULT("s", result),
3973 method_can_reboot_parameter,
3974 SD_BUS_VTABLE_UNPRIVILEGED),
3975 SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3976 SD_BUS_ARGS("s", parameter),
3977 SD_BUS_NO_RESULT,
3978 method_set_reboot_parameter,
3979 SD_BUS_VTABLE_UNPRIVILEGED),
3980 SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3981 SD_BUS_NO_ARGS,
3982 SD_BUS_RESULT("s", result),
3983 method_can_reboot_to_firmware_setup,
3984 SD_BUS_VTABLE_UNPRIVILEGED),
3985 SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3986 SD_BUS_ARGS("b", enable),
3987 SD_BUS_NO_RESULT,
3988 method_set_reboot_to_firmware_setup,
3989 SD_BUS_VTABLE_UNPRIVILEGED),
3990 SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3991 SD_BUS_NO_ARGS,
3992 SD_BUS_RESULT("s", result),
3993 method_can_reboot_to_boot_loader_menu,
3994 SD_BUS_VTABLE_UNPRIVILEGED),
3995 SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3996 SD_BUS_ARGS("t", timeout),
3997 SD_BUS_NO_RESULT,
3998 method_set_reboot_to_boot_loader_menu,
3999 SD_BUS_VTABLE_UNPRIVILEGED),
4000 SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
4001 SD_BUS_NO_ARGS,
4002 SD_BUS_RESULT("s", result),
4003 method_can_reboot_to_boot_loader_entry,
4004 SD_BUS_VTABLE_UNPRIVILEGED),
4005 SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
4006 SD_BUS_ARGS("s", boot_loader_entry),
4007 SD_BUS_NO_RESULT,
4008 method_set_reboot_to_boot_loader_entry,
4009 SD_BUS_VTABLE_UNPRIVILEGED),
4010 SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
4011 SD_BUS_ARGS("s", wall_message, "b", enable),
4012 SD_BUS_NO_RESULT,
4013 method_set_wall_message,
4014 SD_BUS_VTABLE_UNPRIVILEGED),
4015
4016 SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
4017 SD_BUS_ARGS("s", session_id, "o", object_path),
4018 0),
4019 SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
4020 SD_BUS_ARGS("s", session_id, "o", object_path),
4021 0),
4022 SD_BUS_SIGNAL_WITH_ARGS("UserNew",
4023 SD_BUS_ARGS("u", uid, "o", object_path),
4024 0),
4025 SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
4026 SD_BUS_ARGS("u", uid, "o", object_path),
4027 0),
4028 SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
4029 SD_BUS_ARGS("s", seat_id, "o", object_path),
4030 0),
4031 SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
4032 SD_BUS_ARGS("s", seat_id, "o", object_path),
4033 0),
4034 SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
4035 SD_BUS_ARGS("b", start),
4036 0),
4037 SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
4038 SD_BUS_ARGS("b", start, "a{sv}", metadata),
4039 0),
4040 SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
4041 SD_BUS_ARGS("b", start),
4042 0),
4043
4044 SD_BUS_VTABLE_END
4045 };
4046
4047 const BusObjectImplementation manager_object = {
4048 "/org/freedesktop/login1",
4049 "org.freedesktop.login1.Manager",
4050 .vtables = BUS_VTABLES(manager_vtable),
4051 .children = BUS_IMPLEMENTATIONS(&seat_object,
4052 &session_object,
4053 &user_object),
4054 };
4055
4056 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
4057 assert(s);
4058 assert(unit);
4059
4060 if (!s->started)
4061 return 0;
4062
4063 if (result && !streq(result, "done")) {
4064 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
4065
4066 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
4067 "Job %u for unit '%s' failed with '%s'", jid, unit, result);
4068 return session_send_create_reply(s, &e);
4069 }
4070
4071 return session_send_create_reply(s, NULL);
4072 }
4073
4074 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4075 const char *path, *result, *unit;
4076 Manager *m = ASSERT_PTR(userdata);
4077 Session *session;
4078 uint32_t id;
4079 User *user;
4080 int r;
4081
4082 assert(message);
4083
4084 r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4085 if (r < 0) {
4086 bus_log_parse_error(r);
4087 return 0;
4088 }
4089
4090 if (m->action_job && streq(m->action_job, path)) {
4091 assert(m->delayed_action);
4092 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4093
4094 /* Tell people that they now may take a lock again */
4095 (void) send_prepare_for(m, m->delayed_action, false);
4096
4097 m->action_job = mfree(m->action_job);
4098 m->delayed_action = NULL;
4099 return 0;
4100 }
4101
4102 session = hashmap_get(m->session_units, unit);
4103 if (session) {
4104 if (streq_ptr(path, session->scope_job)) {
4105 session->scope_job = mfree(session->scope_job);
4106 (void) session_jobs_reply(session, id, unit, result);
4107
4108 session_save(session);
4109 user_save(session->user);
4110 }
4111
4112 session_add_to_gc_queue(session);
4113 }
4114
4115 user = hashmap_get(m->user_units, unit);
4116 if (user) {
4117 if (streq_ptr(path, user->service_job)) {
4118 user->service_job = mfree(user->service_job);
4119
4120 LIST_FOREACH(sessions_by_user, s, user->sessions)
4121 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4122
4123 user_save(user);
4124 }
4125
4126 user_add_to_gc_queue(user);
4127 }
4128
4129 return 0;
4130 }
4131
4132 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4133 const char *path, *unit;
4134 Manager *m = ASSERT_PTR(userdata);
4135 Session *session;
4136 User *user;
4137 int r;
4138
4139 assert(message);
4140
4141 r = sd_bus_message_read(message, "so", &unit, &path);
4142 if (r < 0) {
4143 bus_log_parse_error(r);
4144 return 0;
4145 }
4146
4147 session = hashmap_get(m->session_units, unit);
4148 if (session)
4149 session_add_to_gc_queue(session);
4150
4151 user = hashmap_get(m->user_units, unit);
4152 if (user)
4153 user_add_to_gc_queue(user);
4154
4155 return 0;
4156 }
4157
4158 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4159 _cleanup_free_ char *unit = NULL;
4160 Manager *m = ASSERT_PTR(userdata);
4161 const char *path;
4162 Session *session;
4163 User *user;
4164 int r;
4165
4166 assert(message);
4167
4168 path = sd_bus_message_get_path(message);
4169 if (!path)
4170 return 0;
4171
4172 r = unit_name_from_dbus_path(path, &unit);
4173 if (r == -EINVAL) /* not a unit */
4174 return 0;
4175 if (r < 0) {
4176 log_oom();
4177 return 0;
4178 }
4179
4180 session = hashmap_get(m->session_units, unit);
4181 if (session)
4182 session_add_to_gc_queue(session);
4183
4184 user = hashmap_get(m->user_units, unit);
4185 if (user)
4186 user_add_to_gc_queue(user);
4187
4188 return 0;
4189 }
4190
4191 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4192 Manager *m = ASSERT_PTR(userdata);
4193 Session *session;
4194 int b, r;
4195
4196 assert(message);
4197
4198 r = sd_bus_message_read(message, "b", &b);
4199 if (r < 0) {
4200 bus_log_parse_error(r);
4201 return 0;
4202 }
4203
4204 if (b)
4205 return 0;
4206
4207 /* systemd finished reloading, let's recheck all our sessions */
4208 log_debug("System manager has been reloaded, rechecking sessions...");
4209
4210 HASHMAP_FOREACH(session, m->sessions)
4211 session_add_to_gc_queue(session);
4212
4213 return 0;
4214 }
4215
4216 int manager_send_changed(Manager *manager, const char *property, ...) {
4217 char **l;
4218
4219 assert(manager);
4220
4221 l = strv_from_stdarg_alloca(property);
4222
4223 return sd_bus_emit_properties_changed_strv(
4224 manager->bus,
4225 "/org/freedesktop/login1",
4226 "org.freedesktop.login1.Manager",
4227 l);
4228 }
4229
4230 static int strdup_job(sd_bus_message *reply, char **job) {
4231 const char *j;
4232 char *copy;
4233 int r;
4234
4235 r = sd_bus_message_read(reply, "o", &j);
4236 if (r < 0)
4237 return r;
4238
4239 copy = strdup(j);
4240 if (!copy)
4241 return -ENOMEM;
4242
4243 *job = copy;
4244 return 1;
4245 }
4246
4247 int manager_start_scope(
4248 Manager *manager,
4249 const char *scope,
4250 const PidRef *pidref,
4251 const char *slice,
4252 const char *description,
4253 char **wants,
4254 char **after,
4255 const char *requires_mounts_for,
4256 sd_bus_message *more_properties,
4257 sd_bus_error *error,
4258 char **job) {
4259
4260 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4261 int r;
4262
4263 assert(manager);
4264 assert(scope);
4265 assert(pidref_is_set(pidref));
4266 assert(job);
4267
4268 r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4269 if (r < 0)
4270 return r;
4271
4272 r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4273 if (r < 0)
4274 return r;
4275
4276 r = sd_bus_message_open_container(m, 'a', "(sv)");
4277 if (r < 0)
4278 return r;
4279
4280 if (!isempty(slice)) {
4281 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4282 if (r < 0)
4283 return r;
4284 }
4285
4286 if (!isempty(description)) {
4287 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4288 if (r < 0)
4289 return r;
4290 }
4291
4292 STRV_FOREACH(i, wants) {
4293 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4294 if (r < 0)
4295 return r;
4296 }
4297
4298 STRV_FOREACH(i, after) {
4299 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4300 if (r < 0)
4301 return r;
4302 }
4303
4304 if (!empty_or_root(requires_mounts_for)) {
4305 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4306 if (r < 0)
4307 return r;
4308 }
4309
4310 /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4311 * SIGTERM */
4312 r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4313 if (r < 0)
4314 return r;
4315
4316 r = bus_append_scope_pidref(m, pidref);
4317 if (r < 0)
4318 return r;
4319
4320 /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4321 the scope */
4322 r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4323 if (r < 0)
4324 return r;
4325
4326 /* disable TasksMax= for the session scope, rely on the slice setting for it */
4327 r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4328 if (r < 0)
4329 return bus_log_create_error(r);
4330
4331 if (more_properties) {
4332 /* If TasksMax also appears here, it will overwrite the default value set above */
4333 r = sd_bus_message_copy(m, more_properties, true);
4334 if (r < 0)
4335 return r;
4336 }
4337
4338 r = sd_bus_message_close_container(m);
4339 if (r < 0)
4340 return r;
4341
4342 r = sd_bus_message_append(m, "a(sa(sv))", 0);
4343 if (r < 0)
4344 return r;
4345
4346 r = sd_bus_call(manager->bus, m, 0, error, &reply);
4347 if (r < 0)
4348 return r;
4349
4350 return strdup_job(reply, job);
4351 }
4352
4353 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4354 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4355 int r;
4356
4357 assert(manager);
4358 assert(unit);
4359 assert(job);
4360
4361 r = bus_call_method(
4362 manager->bus,
4363 bus_systemd_mgr,
4364 "StartUnit",
4365 error,
4366 &reply,
4367 "ss", unit, "replace");
4368 if (r < 0)
4369 return r;
4370
4371 return strdup_job(reply, job);
4372 }
4373
4374 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4375 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4376 int r;
4377
4378 assert(manager);
4379 assert(unit);
4380 assert(ret_job);
4381
4382 r = bus_call_method(
4383 manager->bus,
4384 bus_systemd_mgr,
4385 "StopUnit",
4386 error,
4387 &reply,
4388 "ss", unit, job_mode ?: "fail");
4389 if (r < 0) {
4390 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4391 BUS_ERROR_LOAD_FAILED)) {
4392
4393 *ret_job = NULL;
4394 sd_bus_error_free(error);
4395 return 0;
4396 }
4397
4398 return r;
4399 }
4400
4401 return strdup_job(reply, ret_job);
4402 }
4403
4404 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4405 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4406 _cleanup_free_ char *path = NULL;
4407 int r;
4408
4409 assert(manager);
4410 assert(scope);
4411
4412 path = unit_dbus_path_from_name(scope);
4413 if (!path)
4414 return -ENOMEM;
4415
4416 r = sd_bus_call_method(
4417 manager->bus,
4418 "org.freedesktop.systemd1",
4419 path,
4420 "org.freedesktop.systemd1.Scope",
4421 "Abandon",
4422 &error,
4423 NULL,
4424 NULL);
4425 if (r < 0) {
4426 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4427 BUS_ERROR_LOAD_FAILED,
4428 BUS_ERROR_SCOPE_NOT_RUNNING))
4429 return 0;
4430
4431 sd_bus_error_move(ret_error, &error);
4432 return r;
4433 }
4434
4435 return 1;
4436 }
4437
4438 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4439 assert(manager);
4440 assert(unit);
4441
4442 return bus_call_method(
4443 manager->bus,
4444 bus_systemd_mgr,
4445 "KillUnit",
4446 error,
4447 NULL,
4448 "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4449 }
4450
4451 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4452 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4453 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4454 _cleanup_free_ char *path = NULL;
4455 const char *state;
4456 int r;
4457
4458 assert(manager);
4459 assert(unit);
4460
4461 path = unit_dbus_path_from_name(unit);
4462 if (!path)
4463 return -ENOMEM;
4464
4465 r = sd_bus_get_property(
4466 manager->bus,
4467 "org.freedesktop.systemd1",
4468 path,
4469 "org.freedesktop.systemd1.Unit",
4470 "ActiveState",
4471 &error,
4472 &reply,
4473 "s");
4474 if (r < 0) {
4475 /* systemd might have dropped off momentarily, let's
4476 * not make this an error */
4477 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4478 SD_BUS_ERROR_DISCONNECTED))
4479 return true;
4480
4481 /* If the unit is already unloaded then it's not
4482 * active */
4483 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4484 BUS_ERROR_LOAD_FAILED))
4485 return false;
4486
4487 sd_bus_error_move(ret_error, &error);
4488 return r;
4489 }
4490
4491 r = sd_bus_message_read(reply, "s", &state);
4492 if (r < 0)
4493 return r;
4494
4495 return !STR_IN_SET(state, "inactive", "failed");
4496 }
4497
4498 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4499 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4500 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4501 int r;
4502
4503 assert(manager);
4504 assert(path);
4505
4506 r = sd_bus_get_property(
4507 manager->bus,
4508 "org.freedesktop.systemd1",
4509 path,
4510 "org.freedesktop.systemd1.Job",
4511 "State",
4512 &error,
4513 &reply,
4514 "s");
4515 if (r < 0) {
4516 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4517 SD_BUS_ERROR_DISCONNECTED))
4518 return true;
4519
4520 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4521 return false;
4522
4523 sd_bus_error_move(ret_error, &error);
4524 return r;
4525 }
4526
4527 /* We don't actually care about the state really. The fact
4528 * that we could read the job state is enough for us */
4529
4530 return true;
4531 }