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logind: make sure we create /var/lib/systemd before using it
[thirdparty/systemd.git] / src / login / logind-dbus.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2011 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <errno.h>
23 #include <string.h>
24 #include <unistd.h>
25 #include <pwd.h>
26
27 #include "logind.h"
28 #include "dbus-common.h"
29 #include "strv.h"
30 #include "polkit.h"
31 #include "special.h"
32
33 #define BUS_MANAGER_INTERFACE \
34 " <interface name=\"org.freedesktop.login1.Manager\">\n" \
35 " <method name=\"GetSession\">\n" \
36 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
37 " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \
38 " </method>\n" \
39 " <method name=\"GetUser\">\n" \
40 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
41 " <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
42 " </method>\n" \
43 " <method name=\"GetSeat\">\n" \
44 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
45 " <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \
46 " </method>\n" \
47 " <method name=\"ListSessions\">\n" \
48 " <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \
49 " </method>\n" \
50 " <method name=\"ListUsers\">\n" \
51 " <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \
52 " </method>\n" \
53 " <method name=\"ListSeats\">\n" \
54 " <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \
55 " </method>\n" \
56 " <method name=\"CreateSession\">\n" \
57 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
58 " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
59 " <arg name=\"sevice\" type=\"s\" direction=\"in\"/>\n" \
60 " <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \
61 " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
62 " <arg name=\"vtnr\" type=\"u\" direction=\"in\"/>\n" \
63 " <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \
64 " <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \
65 " <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \
66 " <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \
67 " <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \
68 " <arg name=\"controllers\" type=\"as\" direction=\"in\"/>\n" \
69 " <arg name=\"reset_controllers\" type=\"as\" direction=\"in\"/>\n" \
70 " <arg name=\"kill_processes\" type=\"b\" direction=\"in\"/>\n" \
71 " <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \
72 " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \
73 " <arg name=\"runtime_path\" type=\"o\" direction=\"out\"/>\n" \
74 " <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \
75 " <arg name=\"seat\" type=\"s\" direction=\"out\"/>\n" \
76 " <arg name=\"vtnr\" type=\"u\" direction=\"out\"/>\n" \
77 " </method>\n" \
78 " <method name=\"ActivateSession\">\n" \
79 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
80 " </method>\n" \
81 " <method name=\"LockSession\">\n" \
82 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
83 " </method>\n" \
84 " <method name=\"UnlockSession\">\n" \
85 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
86 " </method>\n" \
87 " <method name=\"KillSession\">\n" \
88 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
89 " <arg name=\"who\" type=\"s\"/>\n" \
90 " <arg name=\"signal\" type=\"s\"/>\n" \
91 " </method>\n" \
92 " <method name=\"KillUser\">\n" \
93 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
94 " <arg name=\"signal\" type=\"s\"/>\n" \
95 " </method>\n" \
96 " <method name=\"TerminateSession\">\n" \
97 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
98 " </method>\n" \
99 " <method name=\"TerminateUser\">\n" \
100 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
101 " </method>\n" \
102 " <method name=\"TerminateSeat\">\n" \
103 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
104 " </method>\n" \
105 " <method name=\"SetUserLinger\">\n" \
106 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
107 " <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \
108 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
109 " </method>\n" \
110 " <method name=\"AttachDevice\">\n" \
111 " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
112 " <arg name=\"sysfs\" type=\"s\" direction=\"in\"/>\n" \
113 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
114 " </method>\n" \
115 " <method name=\"FlushDevices\">\n" \
116 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
117 " </method>\n" \
118 " <method name=\"PowerOff\">\n" \
119 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
120 " </method>\n" \
121 " <method name=\"Reboot\">\n" \
122 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
123 " </method>\n" \
124 " <signal name=\"SessionNew\">\n" \
125 " <arg name=\"id\" type=\"s\"/>\n" \
126 " <arg name=\"path\" type=\"o\"/>\n" \
127 " </signal>\n" \
128 " <signal name=\"SessionRemoved\">\n" \
129 " <arg name=\"id\" type=\"s\"/>\n" \
130 " <arg name=\"path\" type=\"o\"/>\n" \
131 " </signal>\n" \
132 " <signal name=\"UserNew\">\n" \
133 " <arg name=\"uid\" type=\"u\"/>\n" \
134 " <arg name=\"path\" type=\"o\"/>\n" \
135 " </signal>\n" \
136 " <signal name=\"UserRemoved\">\n" \
137 " <arg name=\"uid\" type=\"u\"/>\n" \
138 " <arg name=\"path\" type=\"o\"/>\n" \
139 " </signal>\n" \
140 " <signal name=\"SeatNew\">\n" \
141 " <arg name=\"id\" type=\"s\"/>\n" \
142 " <arg name=\"path\" type=\"o\"/>\n" \
143 " </signal>\n" \
144 " <signal name=\"SeatRemoved\">\n" \
145 " <arg name=\"id\" type=\"s\"/>\n" \
146 " <arg name=\"path\" type=\"o\"/>\n" \
147 " </signal>\n" \
148 " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
149 " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
150 " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
151 " <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \
152 " <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \
153 " <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \
154 " <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \
155 " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
156 " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
157 " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
158 " </interface>\n"
159
160 #define INTROSPECTION_BEGIN \
161 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
162 "<node>\n" \
163 BUS_MANAGER_INTERFACE \
164 BUS_PROPERTIES_INTERFACE \
165 BUS_PEER_INTERFACE \
166 BUS_INTROSPECTABLE_INTERFACE
167
168 #define INTROSPECTION_END \
169 "</node>\n"
170
171 #define INTERFACES_LIST \
172 BUS_GENERIC_INTERFACES_LIST \
173 "org.freedesktop.login1.Manager\0"
174
175 static int bus_manager_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
176 Manager *m = data;
177 dbus_bool_t b;
178
179 assert(i);
180 assert(property);
181 assert(m);
182
183 b = manager_get_idle_hint(m, NULL) > 0;
184 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
185 return -ENOMEM;
186
187 return 0;
188 }
189
190 static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
191 Manager *m = data;
192 dual_timestamp t;
193 uint64_t u;
194
195 assert(i);
196 assert(property);
197 assert(m);
198
199 manager_get_idle_hint(m, &t);
200 u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
201
202 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
203 return -ENOMEM;
204
205 return 0;
206 }
207
208 static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) {
209 Session *session = NULL;
210 User *user = NULL;
211 const char *type, *seat, *tty, *display, *remote_user, *remote_host, *service;
212 uint32_t uid, leader, audit_id = 0;
213 dbus_bool_t remote, kill_processes;
214 char **controllers = NULL, **reset_controllers = NULL;
215 SessionType t;
216 Seat *s;
217 DBusMessageIter iter;
218 int r;
219 char *id = NULL, *p;
220 uint32_t vtnr = 0;
221 int fifo_fd = -1;
222 DBusMessage *reply = NULL;
223 bool b;
224
225 assert(m);
226 assert(message);
227 assert(_reply);
228
229 if (!dbus_message_iter_init(message, &iter) ||
230 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
231 return -EINVAL;
232
233 dbus_message_iter_get_basic(&iter, &uid);
234
235 if (!dbus_message_iter_next(&iter) ||
236 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
237 return -EINVAL;
238
239 dbus_message_iter_get_basic(&iter, &leader);
240
241 if (leader <= 0 ||
242 !dbus_message_iter_next(&iter) ||
243 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
244 return -EINVAL;
245
246 dbus_message_iter_get_basic(&iter, &service);
247
248 if (!dbus_message_iter_next(&iter) ||
249 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
250 return -EINVAL;
251
252 dbus_message_iter_get_basic(&iter, &type);
253 t = session_type_from_string(type);
254
255 if (t < 0 ||
256 !dbus_message_iter_next(&iter) ||
257 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
258 return -EINVAL;
259
260 dbus_message_iter_get_basic(&iter, &seat);
261
262 if (isempty(seat))
263 s = NULL;
264 else {
265 s = hashmap_get(m->seats, seat);
266 if (!s)
267 return -ENOENT;
268 }
269
270 if (!dbus_message_iter_next(&iter) ||
271 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
272 return -EINVAL;
273
274 dbus_message_iter_get_basic(&iter, &vtnr);
275
276 if (!dbus_message_iter_next(&iter) ||
277 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
278 return -EINVAL;
279
280 dbus_message_iter_get_basic(&iter, &tty);
281
282 if (tty_is_vc(tty)) {
283 int v;
284
285 if (!s)
286 s = m->vtconsole;
287 else if (s != m->vtconsole)
288 return -EINVAL;
289
290 v = vtnr_from_tty(tty);
291
292 if (v <= 0)
293 return v < 0 ? v : -EINVAL;
294
295 if (vtnr <= 0)
296 vtnr = (uint32_t) v;
297 else if (vtnr != (uint32_t) v)
298 return -EINVAL;
299
300 } else if (!isempty(tty) && s && seat_is_vtconsole(s))
301 return -EINVAL;
302
303 if (s) {
304 if (seat_can_multi_session(s)) {
305 if (vtnr <= 0 || vtnr > 63)
306 return -EINVAL;
307 } else {
308 if (vtnr > 0)
309 return -EINVAL;
310 }
311 }
312
313 if (!dbus_message_iter_next(&iter) ||
314 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
315 return -EINVAL;
316
317 dbus_message_iter_get_basic(&iter, &display);
318
319 if (!dbus_message_iter_next(&iter) ||
320 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN)
321 return -EINVAL;
322
323 dbus_message_iter_get_basic(&iter, &remote);
324
325 if (!dbus_message_iter_next(&iter) ||
326 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
327 return -EINVAL;
328
329 dbus_message_iter_get_basic(&iter, &remote_user);
330
331 if (!dbus_message_iter_next(&iter) ||
332 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
333 return -EINVAL;
334
335 dbus_message_iter_get_basic(&iter, &remote_host);
336
337 if (!dbus_message_iter_next(&iter) ||
338 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
339 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING)
340 return -EINVAL;
341
342 r = bus_parse_strv_iter(&iter, &controllers);
343 if (r < 0)
344 return -EINVAL;
345
346 if (strv_contains(controllers, "systemd") ||
347 !dbus_message_iter_next(&iter) ||
348 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
349 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) {
350 r = -EINVAL;
351 goto fail;
352 }
353
354 r = bus_parse_strv_iter(&iter, &reset_controllers);
355 if (r < 0)
356 goto fail;
357
358 if (strv_contains(reset_controllers, "systemd") ||
359 !dbus_message_iter_next(&iter) ||
360 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) {
361 r = -EINVAL;
362 goto fail;
363 }
364
365 dbus_message_iter_get_basic(&iter, &kill_processes);
366
367 r = manager_add_user_by_uid(m, uid, &user);
368 if (r < 0)
369 goto fail;
370
371 audit_session_from_pid(leader, &audit_id);
372
373 if (audit_id > 0) {
374 asprintf(&id, "%lu", (unsigned long) audit_id);
375
376 if (!id) {
377 r = -ENOMEM;
378 goto fail;
379 }
380
381 session = hashmap_get(m->sessions, id);
382
383 if (session) {
384 free(id);
385
386 fifo_fd = session_create_fifo(session);
387 if (fifo_fd < 0) {
388 r = fifo_fd;
389 goto fail;
390 }
391
392 /* Session already exists, client is probably
393 * something like "su" which changes uid but
394 * is still the same audit session */
395
396 reply = dbus_message_new_method_return(message);
397 if (!reply) {
398 r = -ENOMEM;
399 goto fail;
400 }
401
402 p = session_bus_path(session);
403 if (!p) {
404 r = -ENOMEM;
405 goto fail;
406 }
407
408 seat = session->seat ? session->seat->id : "";
409 vtnr = session->vtnr;
410 b = dbus_message_append_args(
411 reply,
412 DBUS_TYPE_STRING, &session->id,
413 DBUS_TYPE_OBJECT_PATH, &p,
414 DBUS_TYPE_STRING, &session->user->runtime_path,
415 DBUS_TYPE_UNIX_FD, &fifo_fd,
416 DBUS_TYPE_STRING, &seat,
417 DBUS_TYPE_UINT32, &vtnr,
418 DBUS_TYPE_INVALID);
419 free(p);
420
421 if (!b) {
422 r = -ENOMEM;
423 goto fail;
424 }
425
426 close_nointr_nofail(fifo_fd);
427 *_reply = reply;
428
429 strv_free(controllers);
430 strv_free(reset_controllers);
431
432 return 0;
433 }
434
435 } else {
436 do {
437 free(id);
438 asprintf(&id, "c%lu", ++m->session_counter);
439
440 if (!id) {
441 r = -ENOMEM;
442 goto fail;
443 }
444
445 } while (hashmap_get(m->sessions, id));
446 }
447
448 r = manager_add_session(m, user, id, &session);
449 free(id);
450 if (r < 0)
451 goto fail;
452
453 session->leader = leader;
454 session->audit_id = audit_id;
455 session->type = t;
456 session->remote = remote;
457 session->controllers = controllers;
458 session->reset_controllers = reset_controllers;
459 session->kill_processes = kill_processes;
460 session->vtnr = vtnr;
461
462 controllers = reset_controllers = NULL;
463
464 if (!isempty(tty)) {
465 session->tty = strdup(tty);
466 if (!session->tty) {
467 r = -ENOMEM;
468 goto fail;
469 }
470 }
471
472 if (!isempty(display)) {
473 session->display = strdup(display);
474 if (!session->display) {
475 r = -ENOMEM;
476 goto fail;
477 }
478 }
479
480 if (!isempty(remote_user)) {
481 session->remote_user = strdup(remote_user);
482 if (!session->remote_user) {
483 r = -ENOMEM;
484 goto fail;
485 }
486 }
487
488 if (!isempty(remote_host)) {
489 session->remote_host = strdup(remote_host);
490 if (!session->remote_host) {
491 r = -ENOMEM;
492 goto fail;
493 }
494 }
495
496 if (!isempty(service)) {
497 session->service = strdup(service);
498 if (!session->service) {
499 r = -ENOMEM;
500 goto fail;
501 }
502 }
503
504 fifo_fd = session_create_fifo(session);
505 if (fifo_fd < 0) {
506 r = fifo_fd;
507 goto fail;
508 }
509
510 if (s) {
511 r = seat_attach_session(s, session);
512 if (r < 0)
513 goto fail;
514 }
515
516 r = session_start(session);
517 if (r < 0)
518 goto fail;
519
520 reply = dbus_message_new_method_return(message);
521 if (!reply) {
522 r = -ENOMEM;
523 goto fail;
524 }
525
526 p = session_bus_path(session);
527 if (!p) {
528 r = -ENOMEM;
529 goto fail;
530 }
531
532 seat = s ? s->id : "";
533 b = dbus_message_append_args(
534 reply,
535 DBUS_TYPE_STRING, &session->id,
536 DBUS_TYPE_OBJECT_PATH, &p,
537 DBUS_TYPE_STRING, &session->user->runtime_path,
538 DBUS_TYPE_UNIX_FD, &fifo_fd,
539 DBUS_TYPE_STRING, &seat,
540 DBUS_TYPE_UINT32, &vtnr,
541 DBUS_TYPE_INVALID);
542 free(p);
543
544 if (!b) {
545 r = -ENOMEM;
546 goto fail;
547 }
548
549 close_nointr_nofail(fifo_fd);
550 *_reply = reply;
551
552 return 0;
553
554 fail:
555 strv_free(controllers);
556 strv_free(reset_controllers);
557
558 if (session)
559 session_add_to_gc_queue(session);
560
561 if (user)
562 user_add_to_gc_queue(user);
563
564 if (fifo_fd >= 0)
565 close_nointr_nofail(fifo_fd);
566
567 if (reply)
568 dbus_message_unref(reply);
569
570 return r;
571 }
572
573 static int trigger_device(Manager *m, struct udev_device *d) {
574 struct udev_enumerate *e;
575 struct udev_list_entry *first, *item;
576 int r;
577
578 assert(m);
579
580 e = udev_enumerate_new(m->udev);
581 if (!e) {
582 r = -ENOMEM;
583 goto finish;
584 }
585
586 if (d) {
587 if (udev_enumerate_add_match_parent(e, d) < 0) {
588 r = -EIO;
589 goto finish;
590 }
591 }
592
593 if (udev_enumerate_scan_devices(e) < 0) {
594 r = -EIO;
595 goto finish;
596 }
597
598 first = udev_enumerate_get_list_entry(e);
599 udev_list_entry_foreach(item, first) {
600 char *t;
601 const char *p;
602
603 p = udev_list_entry_get_name(item);
604
605 t = strappend(p, "/uevent");
606 if (!t) {
607 r = -ENOMEM;
608 goto finish;
609 }
610
611 write_one_line_file(t, "change");
612 free(t);
613 }
614
615 r = 0;
616
617 finish:
618 if (e)
619 udev_enumerate_unref(e);
620
621 return r;
622 }
623
624 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
625 struct udev_device *d;
626 char *rule = NULL, *file = NULL;
627 const char *id_for_seat;
628 int r;
629
630 assert(m);
631 assert(seat);
632 assert(sysfs);
633
634 d = udev_device_new_from_syspath(m->udev, sysfs);
635 if (!d)
636 return -ENODEV;
637
638 if (!udev_device_has_tag(d, "seat")) {
639 r = -ENODEV;
640 goto finish;
641 }
642
643 id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
644 if (!id_for_seat) {
645 r = -ENODEV;
646 goto finish;
647 }
648
649 if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0) {
650 r = -ENOMEM;
651 goto finish;
652 }
653
654 if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0) {
655 r = -ENOMEM;
656 goto finish;
657 }
658
659 mkdir_p("/etc/udev/rules.d", 0755);
660 r = write_one_line_file_atomic(file, rule);
661 if (r < 0)
662 goto finish;
663
664 r = trigger_device(m, d);
665
666 finish:
667 free(rule);
668 free(file);
669
670 if (d)
671 udev_device_unref(d);
672
673 return r;
674 }
675
676 static int flush_devices(Manager *m) {
677 DIR *d;
678
679 assert(m);
680
681 d = opendir("/etc/udev/rules.d");
682 if (!d) {
683 if (errno != ENOENT)
684 log_warning("Failed to open /etc/udev/rules.d: %m");
685 } else {
686 struct dirent *de;
687
688 while ((de = readdir(d))) {
689
690 if (!dirent_is_file(de))
691 continue;
692
693 if (!startswith(de->d_name, "72-seat-"))
694 continue;
695
696 if (!endswith(de->d_name, ".rules"))
697 continue;
698
699 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
700 log_warning("Failed to unlink %s: %m", de->d_name);
701 }
702
703 closedir(d);
704 }
705
706 return trigger_device(m, NULL);
707 }
708
709 static const BusProperty bus_login_manager_properties[] = {
710 { "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_path), true },
711 { "Controllers", bus_property_append_strv, "as", offsetof(Manager, controllers), true },
712 { "ResetControllers", bus_property_append_strv, "as", offsetof(Manager, reset_controllers), true },
713 { "NAutoVTs", bus_property_append_unsigned, "u", offsetof(Manager, n_autovts) },
714 { "KillOnlyUsers", bus_property_append_strv, "as", offsetof(Manager, kill_only_users), true },
715 { "KillExcludeUsers", bus_property_append_strv, "as", offsetof(Manager, kill_exclude_users), true },
716 { "KillUserProcesses", bus_property_append_bool, "b", offsetof(Manager, kill_user_processes) },
717 { "IdleHint", bus_manager_append_idle_hint, "b", 0 },
718 { "IdleSinceHint", bus_manager_append_idle_hint_since, "t", 0 },
719 { "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", 0 },
720 { NULL, }
721 };
722
723 static DBusHandlerResult manager_message_handler(
724 DBusConnection *connection,
725 DBusMessage *message,
726 void *userdata) {
727
728 Manager *m = userdata;
729
730 DBusError error;
731 DBusMessage *reply = NULL;
732 int r;
733
734 assert(connection);
735 assert(message);
736 assert(m);
737
738 dbus_error_init(&error);
739
740 if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) {
741 const char *name;
742 char *p;
743 Session *session;
744 bool b;
745
746 if (!dbus_message_get_args(
747 message,
748 &error,
749 DBUS_TYPE_STRING, &name,
750 DBUS_TYPE_INVALID))
751 return bus_send_error_reply(connection, message, &error, -EINVAL);
752
753 session = hashmap_get(m->sessions, name);
754 if (!session)
755 return bus_send_error_reply(connection, message, &error, -ENOENT);
756
757 reply = dbus_message_new_method_return(message);
758 if (!reply)
759 goto oom;
760
761 p = session_bus_path(session);
762 if (!p)
763 goto oom;
764
765 b = dbus_message_append_args(
766 reply,
767 DBUS_TYPE_OBJECT_PATH, &p,
768 DBUS_TYPE_INVALID);
769 free(p);
770
771 if (!b)
772 goto oom;
773
774 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) {
775 uint32_t uid;
776 char *p;
777 User *user;
778 bool b;
779
780 if (!dbus_message_get_args(
781 message,
782 &error,
783 DBUS_TYPE_UINT32, &uid,
784 DBUS_TYPE_INVALID))
785 return bus_send_error_reply(connection, message, &error, -EINVAL);
786
787 user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
788 if (!user)
789 return bus_send_error_reply(connection, message, &error, -ENOENT);
790
791 reply = dbus_message_new_method_return(message);
792 if (!reply)
793 goto oom;
794
795 p = user_bus_path(user);
796 if (!p)
797 goto oom;
798
799 b = dbus_message_append_args(
800 reply,
801 DBUS_TYPE_OBJECT_PATH, &p,
802 DBUS_TYPE_INVALID);
803 free(p);
804
805 if (!b)
806 goto oom;
807
808 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) {
809 const char *name;
810 char *p;
811 Seat *seat;
812 bool b;
813
814 if (!dbus_message_get_args(
815 message,
816 &error,
817 DBUS_TYPE_STRING, &name,
818 DBUS_TYPE_INVALID))
819 return bus_send_error_reply(connection, message, &error, -EINVAL);
820
821 seat = hashmap_get(m->seats, name);
822 if (!seat)
823 return bus_send_error_reply(connection, message, &error, -ENOENT);
824
825 reply = dbus_message_new_method_return(message);
826 if (!reply)
827 goto oom;
828
829 p = seat_bus_path(seat);
830 if (!p)
831 goto oom;
832
833 b = dbus_message_append_args(
834 reply,
835 DBUS_TYPE_OBJECT_PATH, &p,
836 DBUS_TYPE_INVALID);
837 free(p);
838
839 if (!b)
840 goto oom;
841
842 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSessions")) {
843 char *p;
844 Session *session;
845 Iterator i;
846 DBusMessageIter iter, sub;
847 const char *empty = "";
848
849 reply = dbus_message_new_method_return(message);
850 if (!reply)
851 goto oom;
852
853 dbus_message_iter_init_append(reply, &iter);
854
855 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(susso)", &sub))
856 goto oom;
857
858 HASHMAP_FOREACH(session, m->sessions, i) {
859 DBusMessageIter sub2;
860 uint32_t uid;
861
862 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
863 goto oom;
864
865 uid = session->user->uid;
866
867 p = session_bus_path(session);
868 if (!p)
869 goto oom;
870
871 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) ||
872 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
873 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->user->name) ||
874 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, session->seat ? (const char**) &session->seat->id : &empty) ||
875 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
876 free(p);
877 goto oom;
878 }
879
880 free(p);
881
882 if (!dbus_message_iter_close_container(&sub, &sub2))
883 goto oom;
884 }
885
886 if (!dbus_message_iter_close_container(&iter, &sub))
887 goto oom;
888
889 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) {
890 char *p;
891 User *user;
892 Iterator i;
893 DBusMessageIter iter, sub;
894
895 reply = dbus_message_new_method_return(message);
896 if (!reply)
897 goto oom;
898
899 dbus_message_iter_init_append(reply, &iter);
900
901 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(uso)", &sub))
902 goto oom;
903
904 HASHMAP_FOREACH(user, m->users, i) {
905 DBusMessageIter sub2;
906 uint32_t uid;
907
908 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
909 goto oom;
910
911 uid = user->uid;
912
913 p = user_bus_path(user);
914 if (!p)
915 goto oom;
916
917 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
918 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &user->name) ||
919 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
920 free(p);
921 goto oom;
922 }
923
924 free(p);
925
926 if (!dbus_message_iter_close_container(&sub, &sub2))
927 goto oom;
928 }
929
930 if (!dbus_message_iter_close_container(&iter, &sub))
931 goto oom;
932
933 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) {
934 char *p;
935 Seat *seat;
936 Iterator i;
937 DBusMessageIter iter, sub;
938
939 reply = dbus_message_new_method_return(message);
940 if (!reply)
941 goto oom;
942
943 dbus_message_iter_init_append(reply, &iter);
944
945 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(so)", &sub))
946 goto oom;
947
948 HASHMAP_FOREACH(seat, m->seats, i) {
949 DBusMessageIter sub2;
950
951 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
952 goto oom;
953
954 p = seat_bus_path(seat);
955 if (!p)
956 goto oom;
957
958 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &seat->id) ||
959 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
960 free(p);
961 goto oom;
962 }
963
964 free(p);
965
966 if (!dbus_message_iter_close_container(&sub, &sub2))
967 goto oom;
968 }
969
970 if (!dbus_message_iter_close_container(&iter, &sub))
971 goto oom;
972
973 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) {
974
975 r = bus_manager_create_session(m, message, &reply);
976
977 /* Don't delay the work on OOM here, since it might be
978 * triggered by a low RLIMIT_NOFILE here (since we
979 * send a dupped fd to the client), and we'd rather
980 * see this fail quickly then be retried later */
981
982 if (r < 0)
983 return bus_send_error_reply(connection, message, &error, r);
984
985 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) {
986 const char *name;
987 Session *session;
988
989 if (!dbus_message_get_args(
990 message,
991 &error,
992 DBUS_TYPE_STRING, &name,
993 DBUS_TYPE_INVALID))
994 return bus_send_error_reply(connection, message, &error, -EINVAL);
995
996 session = hashmap_get(m->sessions, name);
997 if (!session)
998 return bus_send_error_reply(connection, message, &error, -ENOENT);
999
1000 r = session_activate(session);
1001 if (r < 0)
1002 return bus_send_error_reply(connection, message, NULL, r);
1003
1004 reply = dbus_message_new_method_return(message);
1005 if (!reply)
1006 goto oom;
1007
1008 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSession") ||
1009 dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSession")) {
1010 const char *name;
1011 Session *session;
1012
1013 if (!dbus_message_get_args(
1014 message,
1015 &error,
1016 DBUS_TYPE_STRING, &name,
1017 DBUS_TYPE_INVALID))
1018 return bus_send_error_reply(connection, message, &error, -EINVAL);
1019
1020 session = hashmap_get(m->sessions, name);
1021 if (!session)
1022 return bus_send_error_reply(connection, message, &error, -ENOENT);
1023
1024 if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0)
1025 goto oom;
1026
1027 reply = dbus_message_new_method_return(message);
1028 if (!reply)
1029 goto oom;
1030
1031 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillSession")) {
1032 const char *swho;
1033 int32_t signo;
1034 KillWho who;
1035 const char *name;
1036 Session *session;
1037
1038 if (!dbus_message_get_args(
1039 message,
1040 &error,
1041 DBUS_TYPE_STRING, &name,
1042 DBUS_TYPE_STRING, &swho,
1043 DBUS_TYPE_INT32, &signo,
1044 DBUS_TYPE_INVALID))
1045 return bus_send_error_reply(connection, message, &error, -EINVAL);
1046
1047 if (isempty(swho))
1048 who = KILL_ALL;
1049 else {
1050 who = kill_who_from_string(swho);
1051 if (who < 0)
1052 return bus_send_error_reply(connection, message, &error, -EINVAL);
1053 }
1054
1055 if (signo <= 0 || signo >= _NSIG)
1056 return bus_send_error_reply(connection, message, &error, -EINVAL);
1057
1058 session = hashmap_get(m->sessions, name);
1059 if (!session)
1060 return bus_send_error_reply(connection, message, &error, -ENOENT);
1061
1062 r = session_kill(session, who, signo);
1063 if (r < 0)
1064 return bus_send_error_reply(connection, message, NULL, r);
1065
1066 reply = dbus_message_new_method_return(message);
1067 if (!reply)
1068 goto oom;
1069
1070 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillUser")) {
1071 uint32_t uid;
1072 User *user;
1073 int32_t signo;
1074
1075 if (!dbus_message_get_args(
1076 message,
1077 &error,
1078 DBUS_TYPE_UINT32, &uid,
1079 DBUS_TYPE_INT32, &signo,
1080 DBUS_TYPE_INVALID))
1081 return bus_send_error_reply(connection, message, &error, -EINVAL);
1082
1083 if (signo <= 0 || signo >= _NSIG)
1084 return bus_send_error_reply(connection, message, &error, -EINVAL);
1085
1086 user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
1087 if (!user)
1088 return bus_send_error_reply(connection, message, &error, -ENOENT);
1089
1090 r = user_kill(user, signo);
1091 if (r < 0)
1092 return bus_send_error_reply(connection, message, NULL, r);
1093
1094 reply = dbus_message_new_method_return(message);
1095 if (!reply)
1096 goto oom;
1097
1098 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) {
1099 const char *name;
1100 Session *session;
1101
1102 if (!dbus_message_get_args(
1103 message,
1104 &error,
1105 DBUS_TYPE_STRING, &name,
1106 DBUS_TYPE_INVALID))
1107 return bus_send_error_reply(connection, message, &error, -EINVAL);
1108
1109 session = hashmap_get(m->sessions, name);
1110 if (!session)
1111 return bus_send_error_reply(connection, message, &error, -ENOENT);
1112
1113 r = session_stop(session);
1114 if (r < 0)
1115 return bus_send_error_reply(connection, message, NULL, r);
1116
1117 reply = dbus_message_new_method_return(message);
1118 if (!reply)
1119 goto oom;
1120
1121 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateUser")) {
1122 uint32_t uid;
1123 User *user;
1124
1125 if (!dbus_message_get_args(
1126 message,
1127 &error,
1128 DBUS_TYPE_UINT32, &uid,
1129 DBUS_TYPE_INVALID))
1130 return bus_send_error_reply(connection, message, &error, -EINVAL);
1131
1132 user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
1133 if (!user)
1134 return bus_send_error_reply(connection, message, &error, -ENOENT);
1135
1136 r = user_stop(user);
1137 if (r < 0)
1138 return bus_send_error_reply(connection, message, NULL, r);
1139
1140 reply = dbus_message_new_method_return(message);
1141 if (!reply)
1142 goto oom;
1143
1144 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSeat")) {
1145 const char *name;
1146 Seat *seat;
1147
1148 if (!dbus_message_get_args(
1149 message,
1150 &error,
1151 DBUS_TYPE_STRING, &name,
1152 DBUS_TYPE_INVALID))
1153 return bus_send_error_reply(connection, message, &error, -EINVAL);
1154
1155 seat = hashmap_get(m->seats, name);
1156 if (!seat)
1157 return bus_send_error_reply(connection, message, &error, -ENOENT);
1158
1159 r = seat_stop_sessions(seat);
1160 if (r < 0)
1161 return bus_send_error_reply(connection, message, NULL, r);
1162
1163 reply = dbus_message_new_method_return(message);
1164 if (!reply)
1165 goto oom;
1166
1167 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) {
1168 uint32_t uid;
1169 struct passwd *pw;
1170 dbus_bool_t b, interactive;
1171 char *path;
1172
1173 if (!dbus_message_get_args(
1174 message,
1175 &error,
1176 DBUS_TYPE_UINT32, &uid,
1177 DBUS_TYPE_BOOLEAN, &b,
1178 DBUS_TYPE_BOOLEAN, &interactive,
1179 DBUS_TYPE_INVALID))
1180 return bus_send_error_reply(connection, message, &error, -EINVAL);
1181
1182 errno = 0;
1183 pw = getpwuid(uid);
1184 if (!pw)
1185 return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL);
1186
1187 r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, &error);
1188 if (r < 0)
1189 return bus_send_error_reply(connection, message, &error, r);
1190
1191 mkdir_p("/var/lib/systemd", 0755);
1192
1193 r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0);
1194 if (r < 0)
1195 return bus_send_error_reply(connection, message, &error, r);
1196
1197 path = strappend("/var/lib/systemd/linger/", pw->pw_name);
1198 if (!path)
1199 goto oom;
1200
1201 if (b) {
1202 User *u;
1203
1204 r = touch(path);
1205 free(path);
1206
1207 if (r < 0)
1208 return bus_send_error_reply(connection, message, &error, r);
1209
1210 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1211 user_start(u);
1212
1213 } else {
1214 User *u;
1215
1216 r = unlink(path);
1217 free(path);
1218
1219 if (r < 0 && errno != ENOENT)
1220 return bus_send_error_reply(connection, message, &error, -errno);
1221
1222 u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
1223 if (u)
1224 user_add_to_gc_queue(u);
1225 }
1226
1227 reply = dbus_message_new_method_return(message);
1228 if (!reply)
1229 goto oom;
1230
1231 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "AttachDevice")) {
1232 const char *sysfs, *seat;
1233 dbus_bool_t interactive;
1234
1235 if (!dbus_message_get_args(
1236 message,
1237 &error,
1238 DBUS_TYPE_STRING, &seat,
1239 DBUS_TYPE_STRING, &sysfs,
1240 DBUS_TYPE_BOOLEAN, &interactive,
1241 DBUS_TYPE_INVALID))
1242 return bus_send_error_reply(connection, message, &error, -EINVAL);
1243
1244 if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat))
1245 return bus_send_error_reply(connection, message, NULL, -EINVAL);
1246
1247 r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, &error);
1248 if (r < 0)
1249 return bus_send_error_reply(connection, message, &error, r);
1250
1251 r = attach_device(m, seat, sysfs);
1252 if (r < 0)
1253 return bus_send_error_reply(connection, message, NULL, -EINVAL);
1254
1255 reply = dbus_message_new_method_return(message);
1256 if (!reply)
1257 goto oom;
1258
1259
1260 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "FlushDevices")) {
1261 dbus_bool_t interactive;
1262
1263 if (!dbus_message_get_args(
1264 message,
1265 &error,
1266 DBUS_TYPE_BOOLEAN, &interactive,
1267 DBUS_TYPE_INVALID))
1268 return bus_send_error_reply(connection, message, &error, -EINVAL);
1269
1270 r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, &error);
1271 if (r < 0)
1272 return bus_send_error_reply(connection, message, &error, r);
1273
1274 r = flush_devices(m);
1275 if (r < 0)
1276 return bus_send_error_reply(connection, message, NULL, -EINVAL);
1277
1278 reply = dbus_message_new_method_return(message);
1279 if (!reply)
1280 goto oom;
1281
1282 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "PowerOff") ||
1283 dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Reboot")) {
1284 dbus_bool_t interactive;
1285 bool multiple_sessions;
1286 DBusMessage *forward, *freply;
1287 const char *name;
1288 const char *mode = "replace";
1289 const char *action;
1290
1291 if (!dbus_message_get_args(
1292 message,
1293 &error,
1294 DBUS_TYPE_BOOLEAN, &interactive,
1295 DBUS_TYPE_INVALID))
1296 return bus_send_error_reply(connection, message, &error, -EINVAL);
1297
1298 multiple_sessions = hashmap_size(m->sessions) > 1;
1299
1300 if (!multiple_sessions) {
1301 Session *s;
1302
1303 /* Hmm, there's only one session, but let's
1304 * make sure it actually belongs to the user
1305 * who is asking. If not, better be safe than
1306 * sorry. */
1307
1308 s = hashmap_first(m->sessions);
1309 if (s) {
1310 unsigned long ul;
1311
1312 ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), &error);
1313 if (ul == (unsigned long) -1)
1314 return bus_send_error_reply(connection, message, &error, -EIO);
1315
1316 multiple_sessions = s->user->uid != ul;
1317 }
1318 }
1319
1320 if (streq(dbus_message_get_member(message), "PowerOff")) {
1321 if (multiple_sessions)
1322 action = "org.freedesktop.login1.power-off-multiple-sessions";
1323 else
1324 action = "org.freedesktop.login1.power-off";
1325
1326 name = SPECIAL_POWEROFF_TARGET;
1327 } else {
1328 if (multiple_sessions)
1329 action = "org.freedesktop.login1.reboot-multiple-sessions";
1330 else
1331 action = "org.freedesktop.login1.reboot";
1332
1333 name = SPECIAL_REBOOT_TARGET;
1334 }
1335
1336 r = verify_polkit(connection, message, action, interactive, &error);
1337 if (r < 0)
1338 return bus_send_error_reply(connection, message, &error, r);
1339
1340 forward = dbus_message_new_method_call(
1341 "org.freedesktop.systemd1",
1342 "/org/freedesktop/systemd1",
1343 "org.freedesktop.systemd1.Manager",
1344 "StartUnit");
1345 if (!forward)
1346 return bus_send_error_reply(connection, message, NULL, -ENOMEM);
1347
1348 if (!dbus_message_append_args(forward,
1349 DBUS_TYPE_STRING, &name,
1350 DBUS_TYPE_STRING, &mode,
1351 DBUS_TYPE_INVALID)) {
1352 dbus_message_unref(forward);
1353 return bus_send_error_reply(connection, message, NULL, -ENOMEM);
1354 }
1355
1356 freply = dbus_connection_send_with_reply_and_block(connection, forward, -1, &error);
1357 dbus_message_unref(forward);
1358
1359 if (!freply)
1360 return bus_send_error_reply(connection, message, &error, -EIO);
1361
1362 dbus_message_unref(freply);
1363
1364 reply = dbus_message_new_method_return(message);
1365 if (!reply)
1366 goto oom;
1367
1368 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
1369 char *introspection = NULL;
1370 FILE *f;
1371 Iterator i;
1372 Session *session;
1373 Seat *seat;
1374 User *user;
1375 size_t size;
1376 char *p;
1377
1378 if (!(reply = dbus_message_new_method_return(message)))
1379 goto oom;
1380
1381 /* We roll our own introspection code here, instead of
1382 * relying on bus_default_message_handler() because we
1383 * need to generate our introspection string
1384 * dynamically. */
1385
1386 if (!(f = open_memstream(&introspection, &size)))
1387 goto oom;
1388
1389 fputs(INTROSPECTION_BEGIN, f);
1390
1391 HASHMAP_FOREACH(seat, m->seats, i) {
1392 p = bus_path_escape(seat->id);
1393
1394 if (p) {
1395 fprintf(f, "<node name=\"seat/%s\"/>", p);
1396 free(p);
1397 }
1398 }
1399
1400 HASHMAP_FOREACH(user, m->users, i)
1401 fprintf(f, "<node name=\"user/%llu\"/>", (unsigned long long) user->uid);
1402
1403 HASHMAP_FOREACH(session, m->sessions, i) {
1404 p = bus_path_escape(session->id);
1405
1406 if (p) {
1407 fprintf(f, "<node name=\"session/%s\"/>", p);
1408 free(p);
1409 }
1410 }
1411
1412 fputs(INTROSPECTION_END, f);
1413
1414 if (ferror(f)) {
1415 fclose(f);
1416 free(introspection);
1417 goto oom;
1418 }
1419
1420 fclose(f);
1421
1422 if (!introspection)
1423 goto oom;
1424
1425 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
1426 free(introspection);
1427 goto oom;
1428 }
1429
1430 free(introspection);
1431 } else {
1432 const BusBoundProperties bps[] = {
1433 { "org.freedesktop.login1.Manager", bus_login_manager_properties, m },
1434 { NULL, }
1435 };
1436 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps);
1437 }
1438
1439 if (reply) {
1440 if (!dbus_connection_send(connection, reply, NULL))
1441 goto oom;
1442
1443 dbus_message_unref(reply);
1444 }
1445
1446 return DBUS_HANDLER_RESULT_HANDLED;
1447
1448 oom:
1449 if (reply)
1450 dbus_message_unref(reply);
1451
1452 dbus_error_free(&error);
1453
1454 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1455 }
1456
1457 const DBusObjectPathVTable bus_manager_vtable = {
1458 .message_function = manager_message_handler
1459 };
1460
1461 DBusHandlerResult bus_message_filter(
1462 DBusConnection *connection,
1463 DBusMessage *message,
1464 void *userdata) {
1465
1466 Manager *m = userdata;
1467 DBusError error;
1468
1469 assert(m);
1470 assert(connection);
1471 assert(message);
1472
1473 dbus_error_init(&error);
1474
1475 if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
1476 const char *cgroup;
1477
1478 if (!dbus_message_get_args(message, &error,
1479 DBUS_TYPE_STRING, &cgroup,
1480 DBUS_TYPE_INVALID))
1481 log_error("Failed to parse Released message: %s", bus_error_message(&error));
1482 else
1483 manager_cgroup_notify_empty(m, cgroup);
1484 }
1485
1486 dbus_error_free(&error);
1487
1488 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1489 }
1490
1491 int manager_send_changed(Manager *manager, const char *properties) {
1492 DBusMessage *m;
1493 int r = -ENOMEM;
1494
1495 assert(manager);
1496
1497 m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties);
1498 if (!m)
1499 goto finish;
1500
1501 if (!dbus_connection_send(manager->bus, m, NULL))
1502 goto finish;
1503
1504 r = 0;
1505
1506 finish:
1507 if (m)
1508 dbus_message_unref(m);
1509
1510 return r;
1511 }
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