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unit: use ESRCH as error when we don't find anybody to kill
[thirdparty/systemd.git] / src / logind-dbus.c
CommitLineData
3f49d45a
LP		 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3/***
4 This file is part of systemd.
5
6 Copyright 2011 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
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
a185c5aa
LP		 22#include <errno.h>
23#include <string.h>
98a28fef 24#include <unistd.h>
7f7bb946 25#include <pwd.h>
a185c5aa 26
3f49d45a
LP		 27#include "logind.h"
28#include "dbus-common.h"
98a28fef 29#include "strv.h"
7f7bb946 30#include "polkit.h"
3f49d45a
LP		 31
32#define BUS_MANAGER_INTERFACE \
33 " <interface name=\"org.freedesktop.login1.Manager\">\n" \
bef422ae 34 " <method name=\"GetSession\">\n" \
3f49d45a 35 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
bef422ae 36 " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \
3f49d45a
LP		 37 " </method>\n" \
38 " <method name=\"GetUser\">\n" \
bef422ae 39 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
3f49d45a
LP		 40 " <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
41 " </method>\n" \
bef422ae 42 " <method name=\"GetSeat\">\n" \
3f49d45a 43 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
bef422ae 44 " <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \
3f49d45a 45 " </method>\n" \
bef422ae 46 " <method name=\"ListSessions\">\n" \
e1c9c2d5 47 " <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \
3f49d45a
LP		 48 " </method>\n" \
49 " <method name=\"ListUsers\">\n" \
50 " <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \
51 " </method>\n" \
bef422ae
LP		 52 " <method name=\"ListSeats\">\n" \
53 " <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \
3f49d45a
LP		 54 " </method>\n" \
55 " <method name=\"CreateSession\">\n" \
56 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
57 " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
4d6d6518 58 " <arg name=\"sevice\" type=\"s\" direction=\"in\"/>\n" \
3f49d45a
LP		 59 " <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \
60 " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
4d6d6518 61 " <arg name=\"vtnr\" type=\"u\" direction=\"in\"/>\n" \
3f49d45a
LP		 62 " <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \
63 " <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \
64 " <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \
65 " <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \
66 " <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \
67 " <arg name=\"controllers\" type=\"as\" direction=\"in\"/>\n" \
68 " <arg name=\"reset_controllers\" type=\"as\" direction=\"in\"/>\n" \
98a28fef 69 " <arg name=\"kill_processes\" type=\"b\" direction=\"in\"/>\n" \
3f49d45a
LP		 70 " <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \
71 " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \
98a28fef 72 " <arg name=\"runtime_path\" type=\"o\" direction=\"out\"/>\n" \
3f49d45a
LP		 73 " <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \
74 " </method>\n" \
a185c5aa
LP		 75 " <method name=\"ActivateSession\">\n" \
76 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
77 " </method>\n" \
88e3dc90
LP		 78 " <method name=\"LockSession\">\n" \
79 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
80 " </method>\n" \
81 " <method name=\"UnlockSession\">\n" \
82 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
83 " </method>\n" \
3f49d45a
LP		 84 " <method name=\"TerminateSession\">\n" \
85 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
86 " </method>\n" \
87 " <method name=\"TerminateUser\">\n" \
bef422ae 88 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
3f49d45a
LP		 89 " </method>\n" \
90 " <method name=\"TerminateSeat\">\n" \
91 " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
92 " </method>\n" \
7f7bb946
LP		 93 " <method name=\"SetUserLinger\">\n" \
94 " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
95 " <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \
96 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
97 " </method>\n" \
47a26690
LP		 98 " <method name=\"AttachDevice\">\n" \
99 " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
100 " <arg name=\"sysfs\" type=\"s\" direction=\"in\"/>\n" \
101 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
102 " </method>\n" \
b668e064
LP		 103 " <method name=\"FlushDevices\">\n" \
104 " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
105 " </method>\n" \
3f49d45a
LP		 106 " <signal name=\"SessionNew\">\n" \
107 " <arg name=\"id\" type=\"s\"/>\n" \
108 " <arg name=\"path\" type=\"o\"/>\n" \
109 " </signal>\n" \
110 " <signal name=\"SessionRemoved\">\n" \
111 " <arg name=\"id\" type=\"s\"/>\n" \
112 " <arg name=\"path\" type=\"o\"/>\n" \
113 " </signal>\n" \
114 " <signal name=\"UserNew\">\n" \
115 " <arg name=\"uid\" type=\"u\"/>\n" \
116 " <arg name=\"path\" type=\"o\"/>\n" \
117 " </signal>\n" \
118 " <signal name=\"UserRemoved\">\n" \
119 " <arg name=\"uid\" type=\"u\"/>\n" \
120 " <arg name=\"path\" type=\"o\"/>\n" \
121 " </signal>\n" \
122 " <signal name=\"SeatNew\">\n" \
123 " <arg name=\"id\" type=\"s\"/>\n" \
124 " <arg name=\"path\" type=\"o\"/>\n" \
125 " </signal>\n" \
126 " <signal name=\"SeatRemoved\">\n" \
127 " <arg name=\"id\" type=\"s\"/>\n" \
128 " <arg name=\"path\" type=\"o\"/>\n" \
129 " </signal>\n" \
130 " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
131 " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
132 " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
133 " <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \
134 " <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \
135 " <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \
136 " <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \
a185c5aa
LP		 137 " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
138 " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
139 " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
3f49d45a
LP		 140 " </interface>\n"
141
142#define INTROSPECTION_BEGIN \
143 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
144 "<node>\n" \
145 BUS_MANAGER_INTERFACE \
146 BUS_PROPERTIES_INTERFACE \
147 BUS_PEER_INTERFACE \
148 BUS_INTROSPECTABLE_INTERFACE
149
150#define INTROSPECTION_END \
151 "</node>\n"
152
153#define INTERFACES_LIST \
154 BUS_GENERIC_INTERFACES_LIST \
155 "org.freedesktop.login1.Manager\0"
156
a185c5aa
LP		 157static int bus_manager_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
158 Manager *m = data;
77527da0 159 dbus_bool_t b;
a185c5aa
LP		 160
161 assert(i);
162 assert(property);
163 assert(m);
164
77527da0 165 b = manager_get_idle_hint(m, NULL) > 0;
a185c5aa
LP		 166 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
167 return -ENOMEM;
168
169 return 0;
170}
171
172static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
173 Manager *m = data;
174 dual_timestamp t;
175 uint64_t u;
176
177 assert(i);
178 assert(property);
179 assert(m);
180
181 manager_get_idle_hint(m, &t);
182 u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
183
184 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
185 return -ENOMEM;
186
187 return 0;
188}
189
98a28fef
LP		 190static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) {
191 Session *session = NULL;
192 User *user = NULL;
193 const char *type, *seat, *tty, *display, *remote_user, *remote_host, *service;
194 uint32_t uid, leader, audit_id = 0;
195 dbus_bool_t remote, kill_processes;
196 char **controllers = NULL, **reset_controllers = NULL;
197 SessionType t;
198 Seat *s;
199 DBusMessageIter iter;
200 int r;
07714753 201 char *id = NULL, *p;
4d6d6518 202 uint32_t vtnr = 0;
932e3ee7 203 int fifo_fd = -1;
98a28fef
LP		 204 DBusMessage *reply = NULL;
205 bool b;
206
207 assert(m);
208 assert(message);
209 assert(_reply);
210
211 if (!dbus_message_iter_init(message, &iter) ||
212 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
213 return -EINVAL;
214
215 dbus_message_iter_get_basic(&iter, &uid);
216
217 if (!dbus_message_iter_next(&iter) ||
218 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
219 return -EINVAL;
220
221 dbus_message_iter_get_basic(&iter, &leader);
222
223 if (leader <= 0 ||
224 !dbus_message_iter_next(&iter) ||
225 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
226 return -EINVAL;
227
228 dbus_message_iter_get_basic(&iter, &service);
229
230 if (!dbus_message_iter_next(&iter) ||
231 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
232 return -EINVAL;
233
234 dbus_message_iter_get_basic(&iter, &type);
235 t = session_type_from_string(type);
236
237 if (t < 0 ||
238 !dbus_message_iter_next(&iter) ||
239 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
240 return -EINVAL;
241
242 dbus_message_iter_get_basic(&iter, &seat);
243
244 if (isempty(seat))
245 s = NULL;
246 else {
247 s = hashmap_get(m->seats, seat);
248 if (!s)
249 return -ENOENT;
250 }
251
4d6d6518
LP		 252 if (!dbus_message_iter_next(&iter) ||
253 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
254 return -EINVAL;
255
256 dbus_message_iter_get_basic(&iter, &vtnr);
257
98a28fef
LP		 258 if (!dbus_message_iter_next(&iter) ||
259 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
260 return -EINVAL;
261
262 dbus_message_iter_get_basic(&iter, &tty);
263
264 if (tty_is_vc(tty)) {
4d6d6518 265 int v;
98a28fef
LP		 266
267 if (!s)
268 s = m->vtconsole;
269 else if (s != m->vtconsole)
270 return -EINVAL;
271
4d6d6518
LP		 272 v = vtnr_from_tty(tty);
273
274 if (v <= 0)
275 return v < 0 ? v : -EINVAL;
98a28fef
LP		 276
277 if (vtnr <= 0)
4d6d6518
LP		 278 vtnr = (uint32_t) v;
279 else if (vtnr != (uint32_t) v)
280 return -EINVAL;
98a28fef 281
bf100920 282 } else if (!isempty(tty) && s && seat_is_vtconsole(s))
98a28fef
LP		 283 return -EINVAL;
284
4d6d6518
LP		 285 if (s) {
286 if (seat_is_vtconsole(s)) {
287 if (vtnr <= 0 || vtnr > 63)
288 return -EINVAL;
289 } else {
290 if (vtnr > 0)
291 return -EINVAL;
292 }
293 }
294
98a28fef
LP		 295 if (!dbus_message_iter_next(&iter) ||
296 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
297 return -EINVAL;
298
299 dbus_message_iter_get_basic(&iter, &display);
300
301 if (!dbus_message_iter_next(&iter) ||
302 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN)
303 return -EINVAL;
304
305 dbus_message_iter_get_basic(&iter, &remote);
306
307 if (!dbus_message_iter_next(&iter) ||
308 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
309 return -EINVAL;
310
311 dbus_message_iter_get_basic(&iter, &remote_user);
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, &remote_host);
318
319 if (!dbus_message_iter_next(&iter) ||
320 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
321 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING)
322 return -EINVAL;
323
324 r = bus_parse_strv_iter(&iter, &controllers);
325 if (r < 0)
326 return -EINVAL;
327
25d93491
LP		 328 if (strv_contains(controllers, "systemd") ||
329 !dbus_message_iter_next(&iter) ||
98a28fef
LP		 330 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
331 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) {
332 r = -EINVAL;
333 goto fail;
334 }
335
336 r = bus_parse_strv_iter(&iter, &reset_controllers);
337 if (r < 0)
338 goto fail;
339
25d93491
LP		 340 if (strv_contains(reset_controllers, "systemd") ||
341 !dbus_message_iter_next(&iter) ||
98a28fef
LP		 342 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) {
343 r = -EINVAL;
344 goto fail;
345 }
346
347 dbus_message_iter_get_basic(&iter, &kill_processes);
348
349 r = manager_add_user_by_uid(m, uid, &user);
350 if (r < 0)
351 goto fail;
352
353 audit_session_from_pid(leader, &audit_id);
354
07714753 355 if (audit_id > 0) {
98a28fef 356 asprintf(&id, "%lu", (unsigned long) audit_id);
98a28fef 357
07714753
LP		 358 if (!id) {
359 r = -ENOMEM;
360 goto fail;
361 }
98a28fef 362
21c390cc
LP		 363 session = hashmap_get(m->sessions, id);
364
365 if (session) {
366
932e3ee7
LP		 367 fifo_fd = session_create_fifo(session);
368 if (fifo_fd < 0) {
369 r = fifo_fd;
370 goto fail;
371 }
372
21c390cc
LP		 373 /* Session already exists, client is probably
374 * something like "su" which changes uid but
375 * is still the same audit session */
376
377 reply = dbus_message_new_method_return(message);
378 if (!reply) {
379 r = -ENOMEM;
380 goto fail;
381 }
382
21c390cc
LP		 383 p = session_bus_path(session);
384 if (!p) {
385 r = -ENOMEM;
386 goto fail;
387 }
388
389 b = dbus_message_append_args(
390 reply,
391 DBUS_TYPE_STRING, &session->id,
392 DBUS_TYPE_OBJECT_PATH, &p,
393 DBUS_TYPE_STRING, &session->user->runtime_path,
932e3ee7 394 DBUS_TYPE_UNIX_FD, &fifo_fd,
21c390cc
LP		 395 DBUS_TYPE_INVALID);
396 free(p);
397
398 if (!b) {
399 r = -ENOMEM;
400 goto fail;
401 }
402
932e3ee7 403 close_nointr_nofail(fifo_fd);
21c390cc
LP		 404 *_reply = reply;
405
406 return 0;
07714753
LP		 407 }
408
409 } else {
410 do {
411 free(id);
412 asprintf(&id, "c%lu", ++m->session_counter);
413
414 if (!id) {
415 r = -ENOMEM;
416 goto fail;
417 }
418
419 } while (hashmap_get(m->sessions, id));
98a28fef
LP		 420 }
421
422 r = manager_add_session(m, user, id, &session);
423 free(id);
424 if (r < 0)
425 goto fail;
426
427 session->leader = leader;
428 session->audit_id = audit_id;
429 session->type = t;
430 session->remote = remote;
431 session->controllers = controllers;
432 session->reset_controllers = reset_controllers;
433 session->kill_processes = kill_processes;
434 session->vtnr = vtnr;
435
436 controllers = reset_controllers = NULL;
437
438 if (!isempty(tty)) {
439 session->tty = strdup(tty);
440 if (!session->tty) {
441 r = -ENOMEM;
442 goto fail;
443 }
444 }
445
446 if (!isempty(display)) {
447 session->display = strdup(display);
448 if (!session->display) {
449 r = -ENOMEM;
450 goto fail;
451 }
452 }
453
454 if (!isempty(remote_user)) {
455 session->remote_user = strdup(remote_user);
456 if (!session->remote_user) {
457 r = -ENOMEM;
458 goto fail;
459 }
460 }
461
462 if (!isempty(remote_host)) {
463 session->remote_host = strdup(remote_host);
464 if (!session->remote_host) {
465 r = -ENOMEM;
466 goto fail;
467 }
468 }
469
470 if (!isempty(service)) {
471 session->service = strdup(service);
472 if (!session->service) {
473 r = -ENOMEM;
474 goto fail;
475 }
476 }
477
932e3ee7
LP		 478 fifo_fd = session_create_fifo(session);
479 if (fifo_fd < 0) {
480 r = fifo_fd;
98a28fef
LP		 481 goto fail;
482 }
483
98a28fef
LP		 484 if (s) {
485 r = seat_attach_session(s, session);
486 if (r < 0)
487 goto fail;
488 }
489
490 r = session_start(session);
491 if (r < 0)
492 goto fail;
493
494 reply = dbus_message_new_method_return(message);
495 if (!reply) {
496 r = -ENOMEM;
497 goto fail;
498 }
499
500 p = session_bus_path(session);
501 if (!p) {
502 r = -ENOMEM;
503 goto fail;
504 }
505
506 b = dbus_message_append_args(
507 reply,
508 DBUS_TYPE_STRING, &session->id,
509 DBUS_TYPE_OBJECT_PATH, &p,
510 DBUS_TYPE_STRING, &session->user->runtime_path,
932e3ee7 511 DBUS_TYPE_UNIX_FD, &fifo_fd,
98a28fef
LP		 512 DBUS_TYPE_INVALID);
513 free(p);
514
515 if (!b) {
516 r = -ENOMEM;
517 goto fail;
518 }
519
932e3ee7 520 close_nointr_nofail(fifo_fd);
98a28fef
LP		 521 *_reply = reply;
522
523 return 0;
524
525fail:
526 strv_free(controllers);
527 strv_free(reset_controllers);
528
529 if (session)
530 session_add_to_gc_queue(session);
531
532 if (user)
533 user_add_to_gc_queue(user);
534
932e3ee7
LP		 535 if (fifo_fd >= 0)
536 close_nointr_nofail(fifo_fd);
98a28fef
LP		 537
538 if (reply)
539 dbus_message_unref(reply);
540
541 return r;
542}
543
47a26690
LP		 544static bool device_has_tag(struct udev_device *d, const char *tag) {
545 struct udev_list_entry *first, *item;
546
547 assert(d);
548 assert(tag);
549
7b3afbac 550 /* FIXME */
88bb8d21
LP		 551 udev_device_get_is_initialized(d);
552
47a26690
LP		 553 first = udev_device_get_tags_list_entry(d);
554 udev_list_entry_foreach(item, first)
555 if (streq(udev_list_entry_get_name(item), tag))
556 return true;
557
558 return false;
559}
560
b668e064
LP		 561static int trigger_device(Manager *m, const char *prefix) {
562 struct udev_enumerate *e;
563 struct udev_list_entry *first, *item;
564 int r;
565
566 assert(m);
567
568 e = udev_enumerate_new(m->udev);
569 if (!e) {
570 r = -ENOMEM;
571 goto finish;
572 }
573
574 if (udev_enumerate_scan_devices(e) < 0) {
575 r = -EIO;
576 goto finish;
577 }
578
579 first = udev_enumerate_get_list_entry(e);
580 udev_list_entry_foreach(item, first) {
581 char *t;
582 const char *p;
583
584 p = udev_list_entry_get_name(item);
585
586 if (prefix && !path_startswith(p, prefix))
587 continue;
588
589 t = strappend(p, "/uevent");
590 if (!t) {
591 r = -ENOMEM;
592 goto finish;
593 }
594
595 write_one_line_file(t, "change");
596 free(t);
597 }
598
599 r = 0;
600
601finish:
602 if (e)
603 udev_enumerate_unref(e);
604
605 return r;
606}
607
47a26690
LP		 608static int attach_device(Manager *m, const char *seat, const char *sysfs) {
609 struct udev_device *d;
610 char *rule = NULL, *file = NULL;
c28fa3d3 611 const char *id_for_seat;
47a26690
LP		 612 int r;
613
614 assert(m);
615 assert(seat);
616 assert(sysfs);
617
618 d = udev_device_new_from_syspath(m->udev, sysfs);
619 if (!d)
620 return -ENODEV;
621
622 if (!device_has_tag(d, "seat")) {
623 r = -ENODEV;
624 goto finish;
625 }
626
c28fa3d3
LP		 627 id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
628 if (!id_for_seat) {
47a26690
LP		 629 r = -ENODEV;
630 goto finish;
631 }
632
c28fa3d3 633 if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0) {
47a26690
LP		 634 r = -ENOMEM;
635 goto finish;
636 }
637
c28fa3d3 638 if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0) {
47a26690
LP		 639 r = -ENOMEM;
640 goto finish;
641 }
642
c28fa3d3 643 mkdir_p("/etc/udev/rules.d", 0755);
b5ef5549 644 r = write_one_line_file_atomic(file, rule);
a0a0c7f1
LP		 645 if (r < 0)
646 goto finish;
647
b668e064 648 r = trigger_device(m, sysfs);
47a26690
LP		 649
650finish:
651 free(rule);
652 free(file);
653
654 if (d)
655 udev_device_unref(d);
656
657 return r;
658}
659
b668e064
LP		 660static int flush_devices(Manager *m) {
661 DIR *d;
662
663 assert(m);
664
665 d = opendir("/etc/udev/rules.d");
666 if (!d) {
667 if (errno != ENOENT)
668 log_warning("Failed to open /etc/udev/rules.d: %m");
669 } else {
670 struct dirent *de;
671
672 while ((de = readdir(d))) {
673
674 if (!dirent_is_file(de))
675 continue;
676
677 if (!startswith(de->d_name, "72-seat-"))
678 continue;
679
680 if (!endswith(de->d_name, ".rules"))
681 continue;
682
683 if (unlinkat(dirfd(d), de->d_name, 0) < 0)
684 log_warning("Failed to unlink %s: %m", de->d_name);
685 }
686
687 closedir(d);
688 }
689
690 return trigger_device(m, NULL);
691}
692
3f49d45a
LP		 693static DBusHandlerResult manager_message_handler(
694 DBusConnection *connection,
695 DBusMessage *message,
696 void *userdata) {
697
698 Manager *m = userdata;
699
700 const BusProperty properties[] = {
a185c5aa
LP		 701 { "org.freedesktop.login1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_path },
702 { "org.freedesktop.login1.Manager", "Controllers", bus_property_append_strv, "as", m->controllers },
193197e8 703 { "org.freedesktop.login1.Manager", "ResetControllers", bus_property_append_strv, "as", m->reset_controllers },
a185c5aa
LP		 704 { "org.freedesktop.login1.Manager", "NAutoVTs", bus_property_append_unsigned, "u", &m->n_autovts },
705 { "org.freedesktop.login1.Manager", "KillOnlyUsers", bus_property_append_strv, "as", m->kill_only_users },
706 { "org.freedesktop.login1.Manager", "KillExcludeUsers", bus_property_append_strv, "as", m->kill_exclude_users },
707 { "org.freedesktop.login1.Manager", "KillUserProcesses", bus_property_append_bool, "b", &m->kill_user_processes },
708 { "org.freedesktop.login1.Manager", "IdleHint", bus_manager_append_idle_hint, "b", m },
709 { "org.freedesktop.login1.Manager", "IdleSinceHint", bus_manager_append_idle_hint_since, "t", m },
710 { "org.freedesktop.login1.Manager", "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", m },
3f49d45a
LP		 711 { NULL, NULL, NULL, NULL, NULL }
712 };
713
714 DBusError error;
715 DBusMessage *reply = NULL;
bef422ae 716 int r;
3f49d45a
LP		 717
718 assert(connection);
719 assert(message);
720 assert(m);
721
722 dbus_error_init(&error);
723
bef422ae
LP		 724 if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) {
725 const char *name;
726 char *p;
727 Session *session;
728 bool b;
729
730 if (!dbus_message_get_args(
731 message,
732 &error,
733 DBUS_TYPE_STRING, &name,
734 DBUS_TYPE_INVALID))
735 return bus_send_error_reply(connection, message, &error, -EINVAL);
736
737 session = hashmap_get(m->sessions, name);
738 if (!session)
739 return bus_send_error_reply(connection, message, &error, -ENOENT);
740
741 reply = dbus_message_new_method_return(message);
742 if (!reply)
743 goto oom;
744
745 p = session_bus_path(session);
746 if (!p)
747 goto oom;
748
749 b = dbus_message_append_args(
750 reply,
751 DBUS_TYPE_OBJECT_PATH, &p,
752 DBUS_TYPE_INVALID);
753 free(p);
754
755 if (!b)
756 goto oom;
757
758 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) {
759 uint32_t uid;
760 char *p;
761 User *user;
762 bool b;
763
764 if (!dbus_message_get_args(
765 message,
766 &error,
767 DBUS_TYPE_UINT32, &uid,
768 DBUS_TYPE_INVALID))
769 return bus_send_error_reply(connection, message, &error, -EINVAL);
770
771 user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
772 if (!user)
773 return bus_send_error_reply(connection, message, &error, -ENOENT);
774
775 reply = dbus_message_new_method_return(message);
776 if (!reply)
777 goto oom;
778
779 p = user_bus_path(user);
780 if (!p)
781 goto oom;
782
783 b = dbus_message_append_args(
784 reply,
785 DBUS_TYPE_OBJECT_PATH, &p,
786 DBUS_TYPE_INVALID);
787 free(p);
788
789 if (!b)
790 goto oom;
791
792 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) {
793 const char *name;
794 char *p;
795 Seat *seat;
796 bool b;
797
798 if (!dbus_message_get_args(
799 message,
800 &error,
801 DBUS_TYPE_STRING, &name,
802 DBUS_TYPE_INVALID))
803 return bus_send_error_reply(connection, message, &error, -EINVAL);
804
805 seat = hashmap_get(m->seats, name);
806 if (!seat)
807 return bus_send_error_reply(connection, message, &error, -ENOENT);
808
809 reply = dbus_message_new_method_return(message);
810 if (!reply)
811 goto oom;
812
813 p = seat_bus_path(seat);
814 if (!p)
815 goto oom;
816
817 b = dbus_message_append_args(
818 reply,
819 DBUS_TYPE_OBJECT_PATH, &p,
820 DBUS_TYPE_INVALID);
821 free(p);
822
823 if (!b)
824 goto oom;
825
e1c9c2d5
LP		 826 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSessions")) {
827 char *p;
828 Session *session;
829 Iterator i;
830 DBusMessageIter iter, sub;
831 const char *empty = "";
832
833 reply = dbus_message_new_method_return(message);
834 if (!reply)
835 goto oom;
836
837 dbus_message_iter_init_append(reply, &iter);
838
dec15e92 839 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(susso)", &sub))
e1c9c2d5
LP		 840 goto oom;
841
842 HASHMAP_FOREACH(session, m->sessions, i) {
843 DBusMessageIter sub2;
844 uint32_t uid;
845
846 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
847 goto oom;
848
849 uid = session->user->uid;
850
851 p = session_bus_path(session);
852 if (!p)
853 goto oom;
854
855 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) ||
856 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
857 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->user->name) ||
858 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, session->seat ? (const char**) &session->seat->id : &empty) ||
859 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
860 free(p);
861 goto oom;
862 }
863
864 free(p);
865
866 if (!dbus_message_iter_close_container(&sub, &sub2))
867 goto oom;
868 }
869
870 if (!dbus_message_iter_close_container(&iter, &sub))
871 goto oom;
872
873 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) {
874 char *p;
875 User *user;
876 Iterator i;
877 DBusMessageIter iter, sub;
878
879 reply = dbus_message_new_method_return(message);
880 if (!reply)
881 goto oom;
882
883 dbus_message_iter_init_append(reply, &iter);
884
dec15e92 885 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(uso)", &sub))
e1c9c2d5
LP		 886 goto oom;
887
888 HASHMAP_FOREACH(user, m->users, i) {
889 DBusMessageIter sub2;
890 uint32_t uid;
891
892 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
893 goto oom;
894
895 uid = user->uid;
896
897 p = user_bus_path(user);
898 if (!p)
899 goto oom;
900
901 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
902 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &user->name) ||
903 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
904 free(p);
905 goto oom;
906 }
907
908 free(p);
909
910 if (!dbus_message_iter_close_container(&sub, &sub2))
911 goto oom;
912 }
913
914 if (!dbus_message_iter_close_container(&iter, &sub))
915 goto oom;
916
917 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) {
918 char *p;
919 Seat *seat;
920 Iterator i;
921 DBusMessageIter iter, sub;
922
923 reply = dbus_message_new_method_return(message);
924 if (!reply)
925 goto oom;
926
927 dbus_message_iter_init_append(reply, &iter);
928
dec15e92 929 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(so)", &sub))
e1c9c2d5
LP		 930 goto oom;
931
932 HASHMAP_FOREACH(seat, m->seats, i) {
933 DBusMessageIter sub2;
934
935 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
936 goto oom;
937
938 p = seat_bus_path(seat);
939 if (!p)
940 goto oom;
941
942 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &seat->id) ||
943 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
944 free(p);
945 goto oom;
946 }
947
948 free(p);
949
950 if (!dbus_message_iter_close_container(&sub, &sub2))
951 goto oom;
952 }
953
954 if (!dbus_message_iter_close_container(&iter, &sub))
955 goto oom;
956
98a28fef
LP		 957 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) {
958
959 r = bus_manager_create_session(m, message, &reply);
960 if (r == -ENOMEM)
961 goto oom;
962
963 if (r < 0)
964 return bus_send_error_reply(connection, message, &error, r);
965
bef422ae
LP		 966 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) {
967 const char *name;
968 Session *session;
969
970 if (!dbus_message_get_args(
971 message,
972 &error,
973 DBUS_TYPE_STRING, &name,
974 DBUS_TYPE_INVALID))
975 return bus_send_error_reply(connection, message, &error, -EINVAL);
976
977 session = hashmap_get(m->sessions, name);
978 if (!session)
979 return bus_send_error_reply(connection, message, &error, -ENOENT);
980
981 r = session_activate(session);
982 if (r < 0)
983 return bus_send_error_reply(connection, message, NULL, r);
984
985 reply = dbus_message_new_method_return(message);
986 if (!reply)
987 goto oom;
988
88e3dc90
LP		 989 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSession") ||
990 dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSession")) {
991 const char *name;
992 Session *session;
993
994 if (!dbus_message_get_args(
995 message,
996 &error,
997 DBUS_TYPE_STRING, &name,
998 DBUS_TYPE_INVALID))
999 return bus_send_error_reply(connection, message, &error, -EINVAL);
1000
1001 session = hashmap_get(m->sessions, name);
1002 if (!session)
1003 return bus_send_error_reply(connection, message, &error, -ENOENT);
1004
1005 if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0)
1006 goto oom;
1007
1008 reply = dbus_message_new_method_return(message);
1009 if (!reply)
1010 goto oom;
1011
bef422ae
LP		 1012 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) {
1013 const char *name;
1014 Session *session;
1015
1016 if (!dbus_message_get_args(
1017 message,
1018 &error,
1019 DBUS_TYPE_STRING, &name,
1020 DBUS_TYPE_INVALID))
1021 return bus_send_error_reply(connection, message, &error, -EINVAL);
1022
1023 session = hashmap_get(m->sessions, name);
1024 if (!session)
1025 return bus_send_error_reply(connection, message, &error, -ENOENT);
1026
1027 r = session_stop(session);
1028 if (r < 0)
1029 return bus_send_error_reply(connection, message, NULL, r);
1030
1031 reply = dbus_message_new_method_return(message);
1032 if (!reply)
1033 goto oom;
1034
1035 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateUser")) {
1036 uint32_t uid;
1037 User *user;
1038
1039 if (!dbus_message_get_args(
1040 message,
1041 &error,
1042 DBUS_TYPE_UINT32, &uid,
1043 DBUS_TYPE_INVALID))
1044 return bus_send_error_reply(connection, message, &error, -EINVAL);
1045
1046 user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
1047 if (!user)
1048 return bus_send_error_reply(connection, message, &error, -ENOENT);
1049
1050 r = user_stop(user);
1051 if (r < 0)
1052 return bus_send_error_reply(connection, message, NULL, r);
1053
1054 reply = dbus_message_new_method_return(message);
1055 if (!reply)
1056 goto oom;
1057
1058 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSeat")) {
1059 const char *name;
1060 Seat *seat;
1061
1062 if (!dbus_message_get_args(
1063 message,
1064 &error,
1065 DBUS_TYPE_STRING, &name,
1066 DBUS_TYPE_INVALID))
1067 return bus_send_error_reply(connection, message, &error, -EINVAL);
1068
1069 seat = hashmap_get(m->seats, name);
1070 if (!seat)
1071 return bus_send_error_reply(connection, message, &error, -ENOENT);
1072
1073 r = seat_stop_sessions(seat);
1074 if (r < 0)
1075 return bus_send_error_reply(connection, message, NULL, r);
1076
1077 reply = dbus_message_new_method_return(message);
1078 if (!reply)
1079 goto oom;
1080
7f7bb946
LP		 1081 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) {
1082 uint32_t uid;
1083 struct passwd *pw;
1084 dbus_bool_t b, interactive;
1085 char *path;
1086
1087 if (!dbus_message_get_args(
1088 message,
1089 &error,
1090 DBUS_TYPE_UINT32, &uid,
1091 DBUS_TYPE_BOOLEAN, &b,
1092 DBUS_TYPE_BOOLEAN, &interactive,
1093 DBUS_TYPE_INVALID))
1094 return bus_send_error_reply(connection, message, &error, -EINVAL);
1095
1096 errno = 0;
1097 pw = getpwuid(uid);
1098 if (!pw)
1099 return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL);
1100
1101 r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, &error);
1102 if (r < 0)
1103 return bus_send_error_reply(connection, message, &error, r);
1104
1105 r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0);
1106 if (r < 0)
1107 return bus_send_error_reply(connection, message, &error, r);
1108
1109 path = strappend("/var/lib/systemd/linger/", pw->pw_name);
1110 if (!path)
1111 goto oom;
1112
1113 if (b) {
38f3fc7d
LP		 1114 User *u;
1115
7f7bb946
LP		 1116 r = touch(path);
1117 free(path);
1118
1119 if (r < 0)
1120 return bus_send_error_reply(connection, message, &error, r);
38f3fc7d
LP		 1121
1122 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1123 user_start(u);
1124
7f7bb946 1125 } else {
38f3fc7d
LP		 1126 User *u;
1127
7f7bb946
LP		 1128 r = unlink(path);
1129 free(path);
1130
1131 if (r < 0 && errno != ENOENT)
1132 return bus_send_error_reply(connection, message, &error, -errno);
38f3fc7d
LP		 1133
1134 u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
1135 if (u)
1136 user_add_to_gc_queue(u);
7f7bb946
LP		 1137 }
1138
1139 reply = dbus_message_new_method_return(message);
1140 if (!reply)
1141 goto oom;
1142
47a26690
LP		 1143 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "AttachDevice")) {
1144 const char *sysfs, *seat;
1145 dbus_bool_t interactive;
1146
1147 if (!dbus_message_get_args(
1148 message,
1149 &error,
1150 DBUS_TYPE_STRING, &seat,
1151 DBUS_TYPE_STRING, &sysfs,
1152 DBUS_TYPE_BOOLEAN, &interactive,
1153 DBUS_TYPE_INVALID))
1154 return bus_send_error_reply(connection, message, &error, -EINVAL);
1155
1156 if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat))
1157 return bus_send_error_reply(connection, message, NULL, -EINVAL);
1158
1159 r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, &error);
1160 if (r < 0)
1161 return bus_send_error_reply(connection, message, &error, r);
1162
1163 r = attach_device(m, seat, sysfs);
1164 if (r < 0)
1165 return bus_send_error_reply(connection, message, NULL, -EINVAL);
1166
1167 reply = dbus_message_new_method_return(message);
1168 if (!reply)
1169 goto oom;
7f7bb946 1170
b668e064
LP		 1171
1172 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "FlushDevices")) {
1173 dbus_bool_t interactive;
1174
1175 if (!dbus_message_get_args(
1176 message,
1177 &error,
1178 DBUS_TYPE_BOOLEAN, &interactive,
1179 DBUS_TYPE_INVALID))
1180 return bus_send_error_reply(connection, message, &error, -EINVAL);
1181
1182 r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, &error);
1183 if (r < 0)
1184 return bus_send_error_reply(connection, message, &error, r);
1185
1186 r = flush_devices(m);
1187 if (r < 0)
1188 return bus_send_error_reply(connection, message, NULL, -EINVAL);
1189
1190 reply = dbus_message_new_method_return(message);
1191 if (!reply)
1192 goto oom;
1193
bef422ae 1194 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
3f49d45a
LP		 1195 char *introspection = NULL;
1196 FILE *f;
1197 Iterator i;
1198 Session *session;
1199 Seat *seat;
1200 User *user;
1201 size_t size;
1202 char *p;
1203
1204 if (!(reply = dbus_message_new_method_return(message)))
1205 goto oom;
1206
1207 /* We roll our own introspection code here, instead of
1208 * relying on bus_default_message_handler() because we
1209 * need to generate our introspection string
1210 * dynamically. */
1211
1212 if (!(f = open_memstream(&introspection, &size)))
1213 goto oom;
1214
1215 fputs(INTROSPECTION_BEGIN, f);
1216
1217 HASHMAP_FOREACH(seat, m->seats, i) {
1218 p = bus_path_escape(seat->id);
1219
1220 if (p) {
1221 fprintf(f, "<node name=\"seat/%s\"/>", p);
1222 free(p);
1223 }
1224 }
1225
1226 HASHMAP_FOREACH(user, m->users, i)
1227 fprintf(f, "<node name=\"user/%llu\"/>", (unsigned long long) user->uid);
1228
1229 HASHMAP_FOREACH(session, m->sessions, i) {
1230 p = bus_path_escape(session->id);
1231
1232 if (p) {
1233 fprintf(f, "<node name=\"session/%s\"/>", p);
1234 free(p);
1235 }
1236 }
1237
1238 fputs(INTROSPECTION_END, f);
1239
1240 if (ferror(f)) {
1241 fclose(f);
1242 free(introspection);
1243 goto oom;
1244 }
1245
1246 fclose(f);
1247
1248 if (!introspection)
1249 goto oom;
1250
1251 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
1252 free(introspection);
1253 goto oom;
1254 }
1255
1256 free(introspection);
1257 } else
1258 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
1259
1260 if (reply) {
1261 if (!dbus_connection_send(connection, reply, NULL))
1262 goto oom;
1263
1264 dbus_message_unref(reply);
1265 }
1266
1267 return DBUS_HANDLER_RESULT_HANDLED;
1268
1269oom:
1270 if (reply)
1271 dbus_message_unref(reply);
1272
1273 dbus_error_free(&error);
1274
1275 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1276}
1277
1278const DBusObjectPathVTable bus_manager_vtable = {
1279 .message_function = manager_message_handler
1280};
9418f147 1281
1713813d
LP		 1282DBusHandlerResult bus_message_filter(
1283 DBusConnection *connection,
1284 DBusMessage *message,
1285 void *userdata) {
1286
1287 Manager *m = userdata;
1288 DBusError error;
1289
1290 assert(m);
1291 assert(connection);
1292 assert(message);
1293
1294 dbus_error_init(&error);
1295
1296 if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
1297 const char *cgroup;
1298
1299 if (!dbus_message_get_args(message, &error,
1300 DBUS_TYPE_STRING, &cgroup,
1301 DBUS_TYPE_INVALID))
1302 log_error("Failed to parse Released message: %s", bus_error_message(&error));
1303 else
1304 manager_cgroup_notify_empty(m, cgroup);
1305 }
1306
1307 dbus_error_free(&error);
1308
1309 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1310}
1311
9418f147
LP		 1312int manager_send_changed(Manager *manager, const char *properties) {
1313 DBusMessage *m;
1314 int r = -ENOMEM;
1315
1316 assert(manager);
1317
1318 m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties);
1319 if (!m)
1320 goto finish;
1321
1322 if (!dbus_connection_send(manager->bus, m, NULL))
1323 goto finish;
1324
1325 r = 0;
1326
1327finish:
1328 if (m)
1329 dbus_message_unref(m);
1330
1331 return r;
1332}
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