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Commit | Line | Data |
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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
ea430986 | 20 | #include <errno.h> |
07630cea | 21 | #include <sys/epoll.h> |
ea430986 LP |
22 | #include <unistd.h> |
23 | ||
718db961 | 24 | #include "sd-bus.h" |
07630cea | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
07630cea LP |
27 | #include "bus-common-errors.h" |
28 | #include "bus-error.h" | |
29 | #include "bus-internal.h" | |
30 | #include "bus-util.h" | |
31 | #include "dbus-cgroup.h" | |
718db961 | 32 | #include "dbus-execute.h" |
07630cea | 33 | #include "dbus-job.h" |
718db961 | 34 | #include "dbus-kill.h" |
07630cea LP |
35 | #include "dbus-manager.h" |
36 | #include "dbus-unit.h" | |
3ffd4af2 LP |
37 | #include "dbus.h" |
38 | #include "fd-util.h" | |
07630cea LP |
39 | #include "log.h" |
40 | #include "missing.h" | |
41 | #include "mkdir.h" | |
42 | #include "selinux-access.h" | |
8f6df3fa | 43 | #include "special.h" |
07630cea LP |
44 | #include "string-util.h" |
45 | #include "strv.h" | |
718db961 | 46 | #include "strxcpyx.h" |
ee104e11 | 47 | #include "user-util.h" |
4288f619 | 48 | |
cbecf9bf | 49 | #define CONNECTIONS_MAX 4096 |
5e8d1c9a | 50 | |
718db961 LP |
51 | static void destroy_bus(Manager *m, sd_bus **bus); |
52 | ||
53 | int bus_send_queued_message(Manager *m) { | |
54 | int r; | |
8e274523 | 55 | |
8e274523 | 56 | assert(m); |
2e317f52 | 57 | |
718db961 LP |
58 | if (!m->queued_message) |
59 | return 0; | |
8e274523 | 60 | |
718db961 LP |
61 | /* If we cannot get rid of this message we won't dispatch any |
62 | * D-Bus messages, so that we won't end up wanting to queue | |
63 | * another message. */ | |
ea430986 | 64 | |
8f88ecf6 | 65 | r = sd_bus_send(NULL, m->queued_message, NULL); |
718db961 | 66 | if (r < 0) |
da927ba9 | 67 | log_warning_errno(r, "Failed to send queued message: %m"); |
ea430986 | 68 | |
718db961 | 69 | m->queued_message = sd_bus_message_unref(m->queued_message); |
ea430986 | 70 | |
718db961 | 71 | return 0; |
ea430986 LP |
72 | } |
73 | ||
d8fdc620 LP |
74 | int bus_forward_agent_released(Manager *m, const char *path) { |
75 | int r; | |
76 | ||
77 | assert(m); | |
78 | assert(path); | |
79 | ||
80 | if (!MANAGER_IS_SYSTEM(m)) | |
81 | return 0; | |
82 | ||
83 | if (!m->system_bus) | |
84 | return 0; | |
85 | ||
86 | /* If we are running a system instance we forward the agent message on the system bus, so that the user | |
87 | * instances get notified about this, too */ | |
88 | ||
89 | r = sd_bus_emit_signal(m->system_bus, | |
90 | "/org/freedesktop/systemd1/agent", | |
91 | "org.freedesktop.systemd1.Agent", | |
92 | "Released", | |
93 | "s", path); | |
94 | if (r < 0) | |
95 | return log_warning_errno(r, "Failed to propagate agent release message: %m"); | |
96 | ||
97 | return 1; | |
98 | } | |
99 | ||
19070062 | 100 | static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 101 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 102 | Manager *m = userdata; |
d8fdc620 | 103 | const char *cgroup; |
0a069ce6 | 104 | uid_t sender_uid; |
718db961 | 105 | int r; |
ea430986 | 106 | |
718db961 | 107 | assert(message); |
ea430986 LP |
108 | assert(m); |
109 | ||
0a069ce6 DH |
110 | /* only accept org.freedesktop.systemd1.Agent from UID=0 */ |
111 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); | |
112 | if (r < 0) | |
113 | return r; | |
114 | ||
115 | r = sd_bus_creds_get_euid(creds, &sender_uid); | |
116 | if (r < 0 || sender_uid != 0) | |
117 | return 0; | |
118 | ||
119 | /* parse 'cgroup-empty' notification */ | |
718db961 LP |
120 | r = sd_bus_message_read(message, "s", &cgroup); |
121 | if (r < 0) { | |
122 | bus_log_parse_error(r); | |
123 | return 0; | |
124 | } | |
ea430986 | 125 | |
718db961 | 126 | manager_notify_cgroup_empty(m, cgroup); |
718db961 LP |
127 | return 0; |
128 | } | |
ea430986 | 129 | |
19070062 | 130 | static int signal_disconnected(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
718db961 | 131 | Manager *m = userdata; |
19070062 | 132 | sd_bus *bus; |
ea430986 | 133 | |
718db961 LP |
134 | assert(message); |
135 | assert(m); | |
19070062 | 136 | assert_se(bus = sd_bus_message_get_bus(message)); |
ea430986 | 137 | |
718db961 LP |
138 | if (bus == m->api_bus) |
139 | destroy_bus(m, &m->api_bus); | |
140 | if (bus == m->system_bus) | |
141 | destroy_bus(m, &m->system_bus); | |
142 | if (set_remove(m->private_buses, bus)) { | |
143 | log_debug("Got disconnect on private connection."); | |
144 | destroy_bus(m, &bus); | |
ea430986 LP |
145 | } |
146 | ||
718db961 | 147 | return 0; |
ea430986 LP |
148 | } |
149 | ||
19070062 | 150 | static int signal_activation_request(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
4afd3348 LP |
151 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
152 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
718db961 LP |
153 | Manager *m = userdata; |
154 | const char *name; | |
155 | Unit *u; | |
156 | int r; | |
ea430986 | 157 | |
718db961 | 158 | assert(message); |
ea430986 LP |
159 | assert(m); |
160 | ||
718db961 LP |
161 | r = sd_bus_message_read(message, "s", &name); |
162 | if (r < 0) { | |
163 | bus_log_parse_error(r); | |
164 | return 0; | |
165 | } | |
ea430986 | 166 | |
718db961 LP |
167 | if (manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SERVICE) || |
168 | manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SOCKET)) { | |
169 | r = sd_bus_error_setf(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is shutting down."); | |
170 | goto failed; | |
171 | } | |
ea430986 | 172 | |
718db961 LP |
173 | r = manager_load_unit(m, name, NULL, &error, &u); |
174 | if (r < 0) | |
175 | goto failed; | |
ea430986 | 176 | |
718db961 | 177 | if (u->refuse_manual_start) { |
7e974e85 | 178 | r = sd_bus_error_setf(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, %s may be requested by dependency only (it is configured to refuse manual start/stop).", u->id); |
718db961 | 179 | goto failed; |
ea430986 LP |
180 | } |
181 | ||
4bd29fe5 | 182 | r = manager_add_job(m, JOB_START, u, JOB_REPLACE, &error, NULL); |
718db961 LP |
183 | if (r < 0) |
184 | goto failed; | |
ea430986 | 185 | |
718db961 | 186 | /* Successfully queued, that's it for us */ |
ea430986 | 187 | return 0; |
ea430986 | 188 | |
718db961 LP |
189 | failed: |
190 | if (!sd_bus_error_is_set(&error)) | |
191 | sd_bus_error_set_errno(&error, r); | |
ea430986 | 192 | |
718db961 | 193 | log_debug("D-Bus activation failed for %s: %s", name, bus_error_message(&error, r)); |
ea430986 | 194 | |
966c66e3 | 195 | r = sd_bus_message_new_signal(sd_bus_message_get_bus(message), &reply, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Activator", "ActivationFailure"); |
718db961 LP |
196 | if (r < 0) { |
197 | bus_log_create_error(r); | |
198 | return 0; | |
199 | } | |
200 | ||
fa0fed49 | 201 | r = sd_bus_message_append(reply, "sss", name, error.name, error.message); |
718db961 LP |
202 | if (r < 0) { |
203 | bus_log_create_error(r); | |
204 | return 0; | |
205 | } | |
206 | ||
966c66e3 | 207 | r = sd_bus_send_to(NULL, reply, "org.freedesktop.DBus", NULL); |
23bbb0de MS |
208 | if (r < 0) |
209 | return log_error_errno(r, "Failed to respond with to bus activation request: %m"); | |
ea430986 | 210 | |
718db961 | 211 | return 0; |
ea430986 LP |
212 | } |
213 | ||
ad5b215d | 214 | #ifdef HAVE_SELINUX |
19070062 | 215 | static int mac_selinux_filter(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
969987ea LP |
216 | Manager *m = userdata; |
217 | const char *verb, *path; | |
218 | Unit *u = NULL; | |
219 | Job *j; | |
220 | int r; | |
221 | ||
969987ea LP |
222 | assert(message); |
223 | ||
224 | /* Our own method calls are all protected individually with | |
225 | * selinux checks, but the built-in interfaces need to be | |
226 | * protected too. */ | |
227 | ||
228 | if (sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Properties", "Set")) | |
229 | verb = "reload"; | |
230 | else if (sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", NULL) || | |
231 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Properties", NULL) || | |
232 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.ObjectManager", NULL) || | |
233 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Peer", NULL)) | |
234 | verb = "status"; | |
235 | else | |
236 | return 0; | |
237 | ||
238 | path = sd_bus_message_get_path(message); | |
239 | ||
240 | if (object_path_startswith("/org/freedesktop/systemd1", path)) { | |
241 | ||
8a188de9 | 242 | r = mac_selinux_access_check(message, verb, error); |
969987ea LP |
243 | if (r < 0) |
244 | return r; | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) { | |
4afd3348 | 250 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
969987ea LP |
251 | pid_t pid; |
252 | ||
5b12334d LP |
253 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); |
254 | if (r < 0) | |
255 | return 0; | |
256 | ||
257 | r = sd_bus_creds_get_pid(creds, &pid); | |
969987ea LP |
258 | if (r < 0) |
259 | return 0; | |
260 | ||
261 | u = manager_get_unit_by_pid(m, pid); | |
262 | } else { | |
263 | r = manager_get_job_from_dbus_path(m, path, &j); | |
264 | if (r >= 0) | |
265 | u = j->unit; | |
266 | else | |
267 | manager_load_unit_from_dbus_path(m, path, NULL, &u); | |
268 | } | |
269 | ||
270 | if (!u) | |
271 | return 0; | |
272 | ||
8a188de9 | 273 | r = mac_selinux_unit_access_check(u, message, verb, error); |
969987ea LP |
274 | if (r < 0) |
275 | return r; | |
276 | ||
277 | return 0; | |
278 | } | |
ad5b215d | 279 | #endif |
969987ea | 280 | |
f00c3121 | 281 | static int bus_job_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 LP |
282 | Manager *m = userdata; |
283 | Job *j; | |
284 | int r; | |
ea430986 | 285 | |
718db961 LP |
286 | assert(bus); |
287 | assert(path); | |
288 | assert(interface); | |
289 | assert(found); | |
ea430986 LP |
290 | assert(m); |
291 | ||
718db961 LP |
292 | r = manager_get_job_from_dbus_path(m, path, &j); |
293 | if (r < 0) | |
294 | return 0; | |
ea430986 | 295 | |
718db961 LP |
296 | *found = j; |
297 | return 1; | |
298 | } | |
ea430986 | 299 | |
f00c3121 | 300 | static int find_unit(Manager *m, sd_bus *bus, const char *path, Unit **unit, sd_bus_error *error) { |
a8cfb1b3 | 301 | Unit *u = NULL; /* just to appease gcc, initialization is not really necessary */ |
718db961 | 302 | int r; |
ea430986 | 303 | |
718db961 LP |
304 | assert(m); |
305 | assert(bus); | |
306 | assert(path); | |
ea430986 | 307 | |
718db961 | 308 | if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) { |
4afd3348 | 309 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 LP |
310 | sd_bus_message *message; |
311 | pid_t pid; | |
ea430986 | 312 | |
19befb2d | 313 | message = sd_bus_get_current_message(bus); |
718db961 | 314 | if (!message) |
f00c3121 | 315 | return 0; |
ea430986 | 316 | |
5b12334d | 317 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); |
718db961 | 318 | if (r < 0) |
5b12334d LP |
319 | return r; |
320 | ||
321 | r = sd_bus_creds_get_pid(creds, &pid); | |
322 | if (r < 0) | |
323 | return r; | |
ea430986 | 324 | |
718db961 | 325 | u = manager_get_unit_by_pid(m, pid); |
a8cfb1b3 ZJS |
326 | if (!u) |
327 | return 0; | |
718db961 | 328 | } else { |
f00c3121 | 329 | r = manager_load_unit_from_dbus_path(m, path, error, &u); |
718db961 | 330 | if (r < 0) |
f00c3121 | 331 | return 0; |
a8cfb1b3 | 332 | assert(u); |
718db961 | 333 | } |
ea430986 | 334 | |
f00c3121 LP |
335 | *unit = u; |
336 | return 1; | |
ea430986 LP |
337 | } |
338 | ||
f00c3121 | 339 | static int bus_unit_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 | 340 | Manager *m = userdata; |
ea430986 | 341 | |
718db961 LP |
342 | assert(bus); |
343 | assert(path); | |
344 | assert(interface); | |
345 | assert(found); | |
ea430986 LP |
346 | assert(m); |
347 | ||
f00c3121 | 348 | return find_unit(m, bus, path, (Unit**) found, error); |
ea430986 LP |
349 | } |
350 | ||
f00c3121 | 351 | static int bus_unit_interface_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 LP |
352 | Manager *m = userdata; |
353 | Unit *u; | |
f00c3121 | 354 | int r; |
ea430986 | 355 | |
718db961 LP |
356 | assert(bus); |
357 | assert(path); | |
358 | assert(interface); | |
359 | assert(found); | |
ea430986 LP |
360 | assert(m); |
361 | ||
f00c3121 LP |
362 | r = find_unit(m, bus, path, &u, error); |
363 | if (r <= 0) | |
364 | return r; | |
3df5bf61 | 365 | |
21b735e7 | 366 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 367 | return 0; |
ea430986 | 368 | |
718db961 LP |
369 | *found = u; |
370 | return 1; | |
ea430986 LP |
371 | } |
372 | ||
f00c3121 | 373 | static int bus_unit_cgroup_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 LP |
374 | Manager *m = userdata; |
375 | Unit *u; | |
f00c3121 | 376 | int r; |
c1e1601e | 377 | |
718db961 LP |
378 | assert(bus); |
379 | assert(path); | |
380 | assert(interface); | |
381 | assert(found); | |
c1e1601e LP |
382 | assert(m); |
383 | ||
f00c3121 LP |
384 | r = find_unit(m, bus, path, &u, error); |
385 | if (r <= 0) | |
386 | return r; | |
05e343b7 | 387 | |
21b735e7 | 388 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 389 | return 0; |
05e343b7 | 390 | |
35b7ff80 | 391 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
718db961 | 392 | return 0; |
0034c15c | 393 | |
718db961 LP |
394 | *found = u; |
395 | return 1; | |
396 | } | |
0034c15c | 397 | |
f00c3121 | 398 | static int bus_cgroup_context_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 LP |
399 | Manager *m = userdata; |
400 | CGroupContext *c; | |
401 | Unit *u; | |
f00c3121 | 402 | int r; |
af25ec12 | 403 | |
718db961 LP |
404 | assert(bus); |
405 | assert(path); | |
406 | assert(interface); | |
407 | assert(found); | |
408 | assert(m); | |
0034c15c | 409 | |
f00c3121 LP |
410 | r = find_unit(m, bus, path, &u, error); |
411 | if (r <= 0) | |
412 | return r; | |
0034c15c | 413 | |
21b735e7 | 414 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 415 | return 0; |
0034c15c | 416 | |
718db961 LP |
417 | c = unit_get_cgroup_context(u); |
418 | if (!c) | |
419 | return 0; | |
c1e1601e | 420 | |
718db961 LP |
421 | *found = c; |
422 | return 1; | |
423 | } | |
0034c15c | 424 | |
f00c3121 | 425 | static int bus_exec_context_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 LP |
426 | Manager *m = userdata; |
427 | ExecContext *c; | |
428 | Unit *u; | |
f00c3121 | 429 | int r; |
0034c15c | 430 | |
718db961 LP |
431 | assert(bus); |
432 | assert(path); | |
433 | assert(interface); | |
434 | assert(found); | |
435 | assert(m); | |
0034c15c | 436 | |
f00c3121 LP |
437 | r = find_unit(m, bus, path, &u, error); |
438 | if (r <= 0) | |
439 | return r; | |
0034c15c | 440 | |
21b735e7 | 441 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 442 | return 0; |
0034c15c | 443 | |
718db961 LP |
444 | c = unit_get_exec_context(u); |
445 | if (!c) | |
446 | return 0; | |
0034c15c | 447 | |
718db961 LP |
448 | *found = c; |
449 | return 1; | |
c1e1601e LP |
450 | } |
451 | ||
f00c3121 | 452 | static int bus_kill_context_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 LP |
453 | Manager *m = userdata; |
454 | KillContext *c; | |
455 | Unit *u; | |
f00c3121 | 456 | int r; |
8e274523 | 457 | |
718db961 LP |
458 | assert(bus); |
459 | assert(path); | |
460 | assert(interface); | |
461 | assert(found); | |
8e274523 LP |
462 | assert(m); |
463 | ||
f00c3121 LP |
464 | r = find_unit(m, bus, path, &u, error); |
465 | if (r <= 0) | |
466 | return r; | |
8e274523 | 467 | |
21b735e7 | 468 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 469 | return 0; |
8e274523 | 470 | |
718db961 LP |
471 | c = unit_get_kill_context(u); |
472 | if (!c) | |
473 | return 0; | |
53c6a358 | 474 | |
718db961 LP |
475 | *found = c; |
476 | return 1; | |
477 | } | |
8e274523 | 478 | |
f00c3121 | 479 | static int bus_job_enumerate(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
f0c03de8 | 480 | _cleanup_strv_free_ char **l = NULL; |
718db961 LP |
481 | Manager *m = userdata; |
482 | unsigned k = 0; | |
483 | Iterator i; | |
484 | Job *j; | |
8e274523 | 485 | |
718db961 LP |
486 | l = new0(char*, hashmap_size(m->jobs)+1); |
487 | if (!l) | |
488 | return -ENOMEM; | |
8e274523 | 489 | |
718db961 LP |
490 | HASHMAP_FOREACH(j, m->jobs, i) { |
491 | l[k] = job_dbus_path(j); | |
492 | if (!l[k]) | |
493 | return -ENOMEM; | |
5e8d1c9a | 494 | |
718db961 LP |
495 | k++; |
496 | } | |
5e8d1c9a | 497 | |
718db961 | 498 | assert(hashmap_size(m->jobs) == k); |
3c661fad | 499 | |
718db961 LP |
500 | *nodes = l; |
501 | l = NULL; | |
5e8d1c9a | 502 | |
718db961 LP |
503 | return k; |
504 | } | |
53c6a358 | 505 | |
f00c3121 | 506 | static int bus_unit_enumerate(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
f0c03de8 | 507 | _cleanup_strv_free_ char **l = NULL; |
718db961 LP |
508 | Manager *m = userdata; |
509 | unsigned k = 0; | |
510 | Iterator i; | |
511 | Unit *u; | |
3c661fad | 512 | |
718db961 LP |
513 | l = new0(char*, hashmap_size(m->units)+1); |
514 | if (!l) | |
515 | return -ENOMEM; | |
53c6a358 | 516 | |
718db961 LP |
517 | HASHMAP_FOREACH(u, m->units, i) { |
518 | l[k] = unit_dbus_path(u); | |
519 | if (!l[k]) | |
520 | return -ENOMEM; | |
53c6a358 | 521 | |
718db961 | 522 | k++; |
3c661fad LP |
523 | } |
524 | ||
718db961 LP |
525 | *nodes = l; |
526 | l = NULL; | |
5e8d1c9a | 527 | |
718db961 | 528 | return k; |
5e8d1c9a LP |
529 | } |
530 | ||
718db961 LP |
531 | static int bus_setup_api_vtables(Manager *m, sd_bus *bus) { |
532 | UnitType t; | |
533 | int r; | |
5e8d1c9a | 534 | |
ea430986 | 535 | assert(m); |
718db961 | 536 | assert(bus); |
ea430986 | 537 | |
ad5b215d | 538 | #ifdef HAVE_SELINUX |
8a188de9 | 539 | r = sd_bus_add_filter(bus, NULL, mac_selinux_filter, m); |
23bbb0de MS |
540 | if (r < 0) |
541 | return log_error_errno(r, "Failed to add SELinux access filter: %m"); | |
ad5b215d | 542 | #endif |
969987ea | 543 | |
19befb2d | 544 | r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", bus_manager_vtable, m); |
23bbb0de MS |
545 | if (r < 0) |
546 | return log_error_errno(r, "Failed to register Manager vtable: %m"); | |
a16e1123 | 547 | |
19befb2d | 548 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/job", "org.freedesktop.systemd1.Job", bus_job_vtable, bus_job_find, m); |
23bbb0de MS |
549 | if (r < 0) |
550 | return log_error_errno(r, "Failed to register Job vtable: %m"); | |
c1e1601e | 551 | |
19befb2d | 552 | r = sd_bus_add_node_enumerator(bus, NULL, "/org/freedesktop/systemd1/job", bus_job_enumerate, m); |
23bbb0de MS |
553 | if (r < 0) |
554 | return log_error_errno(r, "Failed to add job enumerator: %m"); | |
61902ea3 | 555 | |
19befb2d | 556 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/unit", "org.freedesktop.systemd1.Unit", bus_unit_vtable, bus_unit_find, m); |
23bbb0de MS |
557 | if (r < 0) |
558 | return log_error_errno(r, "Failed to register Unit vtable: %m"); | |
61902ea3 | 559 | |
19befb2d | 560 | r = sd_bus_add_node_enumerator(bus, NULL, "/org/freedesktop/systemd1/unit", bus_unit_enumerate, m); |
23bbb0de MS |
561 | if (r < 0) |
562 | return log_error_errno(r, "Failed to add job enumerator: %m"); | |
61902ea3 | 563 | |
718db961 | 564 | for (t = 0; t < _UNIT_TYPE_MAX; t++) { |
21b735e7 LP |
565 | const char *interface; |
566 | ||
567 | assert_se(interface = unit_dbus_interface_from_type(t)); | |
568 | ||
569 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/unit", interface, unit_vtable[t]->bus_vtable, bus_unit_interface_find, m); | |
23bbb0de | 570 | if (r < 0) |
21b735e7 | 571 | return log_error_errno(r, "Failed to register type specific vtable for %s: %m", interface); |
61902ea3 | 572 | |
718db961 | 573 | if (unit_vtable[t]->cgroup_context_offset > 0) { |
21b735e7 | 574 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/unit", interface, bus_unit_cgroup_vtable, bus_unit_cgroup_find, m); |
23bbb0de | 575 | if (r < 0) |
21b735e7 | 576 | return log_error_errno(r, "Failed to register control group unit vtable for %s: %m", interface); |
61902ea3 | 577 | |
21b735e7 | 578 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/unit", interface, bus_cgroup_vtable, bus_cgroup_context_find, m); |
23bbb0de | 579 | if (r < 0) |
21b735e7 | 580 | return log_error_errno(r, "Failed to register control group vtable for %s: %m", interface); |
61902ea3 LP |
581 | } |
582 | ||
718db961 | 583 | if (unit_vtable[t]->exec_context_offset > 0) { |
21b735e7 | 584 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/unit", interface, bus_exec_vtable, bus_exec_context_find, m); |
23bbb0de | 585 | if (r < 0) |
21b735e7 | 586 | return log_error_errno(r, "Failed to register execute vtable for %s: %m", interface); |
718db961 | 587 | } |
61902ea3 | 588 | |
718db961 | 589 | if (unit_vtable[t]->kill_context_offset > 0) { |
21b735e7 | 590 | r = sd_bus_add_fallback_vtable(bus, NULL, "/org/freedesktop/systemd1/unit", interface, bus_kill_vtable, bus_kill_context_find, m); |
23bbb0de | 591 | if (r < 0) |
21b735e7 | 592 | return log_error_errno(r, "Failed to register kill vtable for %s: %m", interface); |
718db961 | 593 | } |
61902ea3 LP |
594 | } |
595 | ||
718db961 | 596 | return 0; |
61902ea3 LP |
597 | } |
598 | ||
718db961 LP |
599 | static int bus_setup_disconnected_match(Manager *m, sd_bus *bus) { |
600 | int r; | |
61902ea3 | 601 | |
718db961 LP |
602 | assert(m); |
603 | assert(bus); | |
61902ea3 | 604 | |
718db961 LP |
605 | r = sd_bus_add_match( |
606 | bus, | |
19befb2d | 607 | NULL, |
27fc65e1 | 608 | "sender='org.freedesktop.DBus.Local'," |
718db961 LP |
609 | "type='signal'," |
610 | "path='/org/freedesktop/DBus/Local'," | |
611 | "interface='org.freedesktop.DBus.Local'," | |
612 | "member='Disconnected'", | |
613 | signal_disconnected, m); | |
05e343b7 | 614 | |
23bbb0de MS |
615 | if (r < 0) |
616 | return log_error_errno(r, "Failed to register match for Disconnected message: %m"); | |
05e343b7 | 617 | |
718db961 | 618 | return 0; |
ea430986 LP |
619 | } |
620 | ||
718db961 | 621 | static int bus_on_connection(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
4afd3348 | 622 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
718db961 | 623 | _cleanup_close_ int nfd = -1; |
6dded4c7 | 624 | Manager *m = userdata; |
718db961 LP |
625 | sd_id128_t id; |
626 | int r; | |
6dded4c7 | 627 | |
718db961 | 628 | assert(s); |
6dded4c7 LP |
629 | assert(m); |
630 | ||
718db961 LP |
631 | nfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC); |
632 | if (nfd < 0) { | |
56f64d95 | 633 | log_warning_errno(errno, "Failed to accept private connection, ignoring: %m"); |
718db961 LP |
634 | return 0; |
635 | } | |
6dded4c7 | 636 | |
718db961 LP |
637 | if (set_size(m->private_buses) >= CONNECTIONS_MAX) { |
638 | log_warning("Too many concurrent connections, refusing"); | |
639 | return 0; | |
640 | } | |
6dded4c7 | 641 | |
d5099efc | 642 | r = set_ensure_allocated(&m->private_buses, NULL); |
718db961 LP |
643 | if (r < 0) { |
644 | log_oom(); | |
645 | return 0; | |
646 | } | |
6dded4c7 | 647 | |
718db961 LP |
648 | r = sd_bus_new(&bus); |
649 | if (r < 0) { | |
da927ba9 | 650 | log_warning_errno(r, "Failed to allocate new private connection bus: %m"); |
718db961 LP |
651 | return 0; |
652 | } | |
6dded4c7 | 653 | |
718db961 LP |
654 | r = sd_bus_set_fd(bus, nfd, nfd); |
655 | if (r < 0) { | |
da927ba9 | 656 | log_warning_errno(r, "Failed to set fd on new connection bus: %m"); |
718db961 LP |
657 | return 0; |
658 | } | |
6dded4c7 | 659 | |
718db961 | 660 | nfd = -1; |
6dded4c7 | 661 | |
718db961 LP |
662 | r = bus_check_peercred(bus); |
663 | if (r < 0) { | |
da927ba9 | 664 | log_warning_errno(r, "Incoming private connection from unprivileged client, refusing: %m"); |
718db961 LP |
665 | return 0; |
666 | } | |
6dded4c7 | 667 | |
718db961 | 668 | assert_se(sd_id128_randomize(&id) >= 0); |
6dded4c7 | 669 | |
718db961 LP |
670 | r = sd_bus_set_server(bus, 1, id); |
671 | if (r < 0) { | |
da927ba9 | 672 | log_warning_errno(r, "Failed to enable server support for new connection bus: %m"); |
718db961 LP |
673 | return 0; |
674 | } | |
6dded4c7 | 675 | |
0674bbea LP |
676 | r = sd_bus_negotiate_creds(bus, 1, |
677 | SD_BUS_CREDS_PID|SD_BUS_CREDS_UID| | |
678 | SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS| | |
679 | SD_BUS_CREDS_SELINUX_CONTEXT); | |
680 | if (r < 0) { | |
681 | log_warning_errno(r, "Failed to enable credentials for new connection: %m"); | |
682 | return 0; | |
683 | } | |
684 | ||
718db961 LP |
685 | r = sd_bus_start(bus); |
686 | if (r < 0) { | |
da927ba9 | 687 | log_warning_errno(r, "Failed to start new connection bus: %m"); |
718db961 | 688 | return 0; |
6dded4c7 LP |
689 | } |
690 | ||
718db961 LP |
691 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
692 | if (r < 0) { | |
da927ba9 | 693 | log_warning_errno(r, "Failed to attach new connection bus to event loop: %m"); |
718db961 | 694 | return 0; |
6dded4c7 LP |
695 | } |
696 | ||
718db961 LP |
697 | r = bus_setup_disconnected_match(m, bus); |
698 | if (r < 0) | |
699 | return 0; | |
6dded4c7 | 700 | |
718db961 LP |
701 | r = bus_setup_api_vtables(m, bus); |
702 | if (r < 0) { | |
da927ba9 | 703 | log_warning_errno(r, "Failed to set up API vtables on new connection bus: %m"); |
718db961 LP |
704 | return 0; |
705 | } | |
6dded4c7 | 706 | |
718db961 LP |
707 | r = set_put(m->private_buses, bus); |
708 | if (r < 0) { | |
05a08cb6 | 709 | log_warning_errno(r, "Failed to add new connection bus to set: %m"); |
718db961 | 710 | return 0; |
6dded4c7 LP |
711 | } |
712 | ||
718db961 | 713 | bus = NULL; |
6dded4c7 | 714 | |
718db961 | 715 | log_debug("Accepted new private connection."); |
6dded4c7 | 716 | |
8e274523 LP |
717 | return 0; |
718 | } | |
719 | ||
8936a5e3 | 720 | int manager_sync_bus_names(Manager *m, sd_bus *bus) { |
0e7be129 | 721 | _cleanup_strv_free_ char **names = NULL; |
d8ccf5fd DM |
722 | const char *name; |
723 | Iterator i; | |
724 | Unit *u; | |
718db961 | 725 | int r; |
5e8d1c9a LP |
726 | |
727 | assert(m); | |
718db961 | 728 | assert(bus); |
5e8d1c9a | 729 | |
0e7be129 | 730 | r = sd_bus_list_names(bus, &names, NULL); |
23bbb0de MS |
731 | if (r < 0) |
732 | return log_error_errno(r, "Failed to get initial list of names: %m"); | |
5e8d1c9a | 733 | |
d8ccf5fd DM |
734 | /* We have to synchronize the current bus names with the |
735 | * list of active services. To do this, walk the list of | |
736 | * all units with bus names. */ | |
737 | HASHMAP_FOREACH_KEY(u, name, m->watch_bus, i) { | |
738 | Service *s = SERVICE(u); | |
739 | ||
740 | assert(s); | |
bbc29086 | 741 | |
d8ccf5fd DM |
742 | if (!streq_ptr(s->bus_name, name)) { |
743 | log_unit_warning(u, "Bus name has changed from %s → %s, ignoring.", s->bus_name, name); | |
744 | continue; | |
745 | } | |
746 | ||
747 | /* Check if a service's bus name is in the list of currently | |
748 | * active names */ | |
749 | if (strv_contains(names, name)) { | |
750 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; | |
751 | const char *unique; | |
752 | ||
753 | /* If it is, determine its current owner */ | |
754 | r = sd_bus_get_name_creds(bus, name, SD_BUS_CREDS_UNIQUE_NAME, &creds); | |
755 | if (r < 0) { | |
756 | log_error_errno(r, "Failed to get bus name owner %s: %m", name); | |
757 | continue; | |
758 | } | |
759 | ||
760 | r = sd_bus_creds_get_unique_name(creds, &unique); | |
761 | if (r < 0) { | |
762 | log_error_errno(r, "Failed to get unique name for %s: %m", name); | |
763 | continue; | |
764 | } | |
765 | ||
766 | /* Now, let's compare that to the previous bus owner, and | |
767 | * if it's still the same, all is fine, so just don't | |
768 | * bother the service. Otherwise, the name has apparently | |
769 | * changed, so synthesize a name owner changed signal. */ | |
770 | ||
771 | if (!streq_ptr(unique, s->bus_name_owner)) | |
772 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, s->bus_name_owner, unique); | |
773 | } else { | |
774 | /* So, the name we're watching is not on the bus. | |
775 | * This either means it simply hasn't appeared yet, | |
776 | * or it was lost during the daemon reload. | |
777 | * Check if the service has a stored name owner, | |
778 | * and synthesize a name loss signal in this case. */ | |
779 | ||
780 | if (s->bus_name_owner) | |
781 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, s->bus_name_owner, NULL); | |
782 | } | |
bbc29086 | 783 | } |
5e8d1c9a | 784 | |
718db961 | 785 | return 0; |
5e8d1c9a LP |
786 | } |
787 | ||
718db961 | 788 | static int bus_setup_api(Manager *m, sd_bus *bus) { |
bbc29086 DM |
789 | Iterator i; |
790 | char *name; | |
791 | Unit *u; | |
718db961 | 792 | int r; |
f278026d | 793 | |
718db961 LP |
794 | assert(m); |
795 | assert(bus); | |
c1e1601e | 796 | |
8fd00193 LP |
797 | /* Let's make sure we have enough credential bits so that we can make security and selinux decisions */ |
798 | r = sd_bus_negotiate_creds(bus, 1, | |
799 | SD_BUS_CREDS_PID|SD_BUS_CREDS_UID| | |
800 | SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS| | |
801 | SD_BUS_CREDS_SELINUX_CONTEXT); | |
802 | if (r < 0) | |
da927ba9 | 803 | log_warning_errno(r, "Failed to enable credential passing, ignoring: %m"); |
8fd00193 | 804 | |
718db961 LP |
805 | r = bus_setup_api_vtables(m, bus); |
806 | if (r < 0) | |
807 | return r; | |
cbd37330 | 808 | |
bbc29086 | 809 | HASHMAP_FOREACH_KEY(u, name, m->watch_bus, i) { |
9806e87d | 810 | r = unit_install_bus_match(u, bus, name); |
bbc29086 | 811 | if (r < 0) |
8ea823b6 | 812 | log_error_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); |
bbc29086 | 813 | } |
718db961 LP |
814 | |
815 | r = sd_bus_add_match( | |
816 | bus, | |
19befb2d | 817 | NULL, |
718db961 LP |
818 | "type='signal'," |
819 | "sender='org.freedesktop.DBus'," | |
820 | "path='/org/freedesktop/DBus'," | |
821 | "interface='org.freedesktop.systemd1.Activator'," | |
822 | "member='ActivationRequest'", | |
823 | signal_activation_request, m); | |
824 | if (r < 0) | |
da927ba9 | 825 | log_warning_errno(r, "Failed to subscribe to activation signal: %m"); |
cbd37330 | 826 | |
718db961 LP |
827 | /* Allow replacing of our name, to ease implementation of |
828 | * reexecution, where we keep the old connection open until | |
829 | * after the new connection is set up and the name installed | |
830 | * to allow clients to synchronously wait for reexecution to | |
831 | * finish */ | |
29a07cdb | 832 | r = sd_bus_request_name(bus,"org.freedesktop.systemd1", SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_ALLOW_REPLACEMENT); |
23bbb0de MS |
833 | if (r < 0) |
834 | return log_error_errno(r, "Failed to register name: %m"); | |
53c6a358 | 835 | |
8936a5e3 | 836 | r = manager_sync_bus_names(m, bus); |
d8ccf5fd DM |
837 | if (r < 0) |
838 | return r; | |
f278026d | 839 | |
718db961 | 840 | log_debug("Successfully connected to API bus."); |
f278026d LP |
841 | return 0; |
842 | } | |
843 | ||
718db961 | 844 | static int bus_init_api(Manager *m) { |
4afd3348 | 845 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
f278026d LP |
846 | int r; |
847 | ||
718db961 LP |
848 | if (m->api_bus) |
849 | return 0; | |
cbd37330 | 850 | |
718db961 | 851 | /* The API and system bus is the same if we are running in system mode */ |
463d0d15 | 852 | if (MANAGER_IS_SYSTEM(m) && m->system_bus) |
718db961 LP |
853 | bus = sd_bus_ref(m->system_bus); |
854 | else { | |
463d0d15 | 855 | if (MANAGER_IS_SYSTEM(m)) |
718db961 LP |
856 | r = sd_bus_open_system(&bus); |
857 | else | |
858 | r = sd_bus_open_user(&bus); | |
cbd37330 | 859 | |
718db961 LP |
860 | if (r < 0) { |
861 | log_debug("Failed to connect to API bus, retrying later..."); | |
862 | return 0; | |
cbd37330 MS |
863 | } |
864 | ||
718db961 LP |
865 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
866 | if (r < 0) { | |
da927ba9 | 867 | log_error_errno(r, "Failed to attach API bus to event loop: %m"); |
718db961 | 868 | return 0; |
cbd37330 MS |
869 | } |
870 | ||
718db961 LP |
871 | r = bus_setup_disconnected_match(m, bus); |
872 | if (r < 0) | |
873 | return 0; | |
cbd37330 MS |
874 | } |
875 | ||
718db961 | 876 | r = bus_setup_api(m, bus); |
cbd37330 | 877 | if (r < 0) { |
da927ba9 | 878 | log_error_errno(r, "Failed to set up API bus: %m"); |
718db961 | 879 | return 0; |
cbd37330 | 880 | } |
cbd37330 | 881 | |
718db961 LP |
882 | m->api_bus = bus; |
883 | bus = NULL; | |
cbd37330 MS |
884 | |
885 | return 0; | |
cbd37330 MS |
886 | } |
887 | ||
718db961 LP |
888 | static int bus_setup_system(Manager *m, sd_bus *bus) { |
889 | int r; | |
cbd37330 | 890 | |
718db961 LP |
891 | assert(m); |
892 | assert(bus); | |
cbd37330 | 893 | |
d8fdc620 LP |
894 | /* if we are a user instance we get the Released message via the system bus */ |
895 | if (MANAGER_IS_USER(m)) { | |
f5b51ea7 DH |
896 | r = sd_bus_add_match( |
897 | bus, | |
898 | NULL, | |
899 | "type='signal'," | |
900 | "interface='org.freedesktop.systemd1.Agent'," | |
901 | "member='Released'," | |
902 | "path='/org/freedesktop/systemd1/agent'", | |
903 | signal_agent_released, m); | |
904 | if (r < 0) | |
905 | log_warning_errno(r, "Failed to register Released match on system bus: %m"); | |
906 | } | |
718db961 LP |
907 | |
908 | log_debug("Successfully connected to system bus."); | |
909 | return 0; | |
cbd37330 MS |
910 | } |
911 | ||
912 | static int bus_init_system(Manager *m) { | |
4afd3348 | 913 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
cbd37330 MS |
914 | int r; |
915 | ||
916 | if (m->system_bus) | |
917 | return 0; | |
918 | ||
718db961 | 919 | /* The API and system bus is the same if we are running in system mode */ |
463d0d15 | 920 | if (MANAGER_IS_SYSTEM(m) && m->api_bus) { |
718db961 LP |
921 | m->system_bus = sd_bus_ref(m->api_bus); |
922 | return 0; | |
9014a8bd | 923 | } |
8e274523 | 924 | |
718db961 LP |
925 | r = sd_bus_open_system(&bus); |
926 | if (r < 0) { | |
927 | log_debug("Failed to connect to system bus, retrying later..."); | |
928 | return 0; | |
929 | } | |
cbd37330 | 930 | |
718db961 | 931 | r = bus_setup_disconnected_match(m, bus); |
cbd37330 | 932 | if (r < 0) |
cbd37330 MS |
933 | return 0; |
934 | ||
718db961 LP |
935 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
936 | if (r < 0) { | |
da927ba9 | 937 | log_error_errno(r, "Failed to attach system bus to event loop: %m"); |
cbd37330 MS |
938 | return 0; |
939 | } | |
940 | ||
718db961 LP |
941 | r = bus_setup_system(m, bus); |
942 | if (r < 0) { | |
da927ba9 | 943 | log_error_errno(r, "Failed to set up system bus: %m"); |
718db961 | 944 | return 0; |
cbd37330 MS |
945 | } |
946 | ||
718db961 LP |
947 | m->system_bus = bus; |
948 | bus = NULL; | |
cbd37330 MS |
949 | |
950 | return 0; | |
5e8d1c9a LP |
951 | } |
952 | ||
953 | static int bus_init_private(Manager *m) { | |
718db961 LP |
954 | _cleanup_close_ int fd = -1; |
955 | union sockaddr_union sa = { | |
956 | .un.sun_family = AF_UNIX | |
5e8d1c9a | 957 | }; |
718db961 LP |
958 | sd_event_source *s; |
959 | socklen_t salen; | |
960 | int r; | |
5e8d1c9a LP |
961 | |
962 | assert(m); | |
963 | ||
718db961 | 964 | if (m->private_listen_fd >= 0) |
5e8d1c9a LP |
965 | return 0; |
966 | ||
463d0d15 | 967 | if (MANAGER_IS_SYSTEM(m)) { |
be81bfc4 LP |
968 | |
969 | /* We want the private bus only when running as init */ | |
970 | if (getpid() != 1) | |
971 | return 0; | |
972 | ||
718db961 | 973 | strcpy(sa.un.sun_path, "/run/systemd/private"); |
fc2fffe7 | 974 | salen = SOCKADDR_UN_LEN(sa.un); |
be81bfc4 | 975 | } else { |
718db961 LP |
976 | size_t left = sizeof(sa.un.sun_path); |
977 | char *p = sa.un.sun_path; | |
be81bfc4 | 978 | const char *e; |
be81bfc4 | 979 | |
4db17f29 | 980 | e = secure_getenv("XDG_RUNTIME_DIR"); |
718db961 LP |
981 | if (!e) { |
982 | log_error("Failed to determine XDG_RUNTIME_DIR"); | |
983 | return -EHOSTDOWN; | |
be81bfc4 LP |
984 | } |
985 | ||
718db961 LP |
986 | left = strpcpy(&p, left, e); |
987 | left = strpcpy(&p, left, "/systemd/private"); | |
92f30349 | 988 | |
718db961 | 989 | salen = sizeof(sa.un) - left; |
be81bfc4 | 990 | } |
5e8d1c9a | 991 | |
f0e62e89 LP |
992 | (void) mkdir_parents_label(sa.un.sun_path, 0755); |
993 | (void) unlink(sa.un.sun_path); | |
718db961 LP |
994 | |
995 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
996 | if (fd < 0) |
997 | return log_error_errno(errno, "Failed to allocate private socket: %m"); | |
5e8d1c9a | 998 | |
718db961 | 999 | r = bind(fd, &sa.sa, salen); |
4a62c710 MS |
1000 | if (r < 0) |
1001 | return log_error_errno(errno, "Failed to bind private socket: %m"); | |
5e8d1c9a | 1002 | |
718db961 | 1003 | r = listen(fd, SOMAXCONN); |
4a62c710 MS |
1004 | if (r < 0) |
1005 | return log_error_errno(errno, "Failed to make private socket listening: %m"); | |
5e8d1c9a | 1006 | |
151b9b96 | 1007 | r = sd_event_add_io(m->event, &s, fd, EPOLLIN, bus_on_connection, m); |
23bbb0de MS |
1008 | if (r < 0) |
1009 | return log_error_errno(r, "Failed to allocate event source: %m"); | |
5e8d1c9a | 1010 | |
7dfbe2e3 TG |
1011 | (void) sd_event_source_set_description(s, "bus-connection"); |
1012 | ||
718db961 LP |
1013 | m->private_listen_fd = fd; |
1014 | m->private_listen_event_source = s; | |
1015 | fd = -1; | |
5e8d1c9a | 1016 | |
718db961 | 1017 | log_debug("Successfully created private D-Bus server."); |
5e8d1c9a | 1018 | |
718db961 | 1019 | return 0; |
5e8d1c9a LP |
1020 | } |
1021 | ||
3996fbe2 | 1022 | int bus_init(Manager *m, bool try_bus_connect) { |
5e8d1c9a LP |
1023 | int r; |
1024 | ||
3996fbe2 | 1025 | if (try_bus_connect) { |
718db961 LP |
1026 | r = bus_init_system(m); |
1027 | if (r < 0) | |
1028 | return r; | |
1029 | ||
1030 | r = bus_init_api(m); | |
1031 | if (r < 0) | |
3996fbe2 LP |
1032 | return r; |
1033 | } | |
1034 | ||
6fa48533 LP |
1035 | r = bus_init_private(m); |
1036 | if (r < 0) | |
5e8d1c9a | 1037 | return r; |
f278026d | 1038 | |
ea430986 LP |
1039 | return 0; |
1040 | } | |
1041 | ||
718db961 | 1042 | static void destroy_bus(Manager *m, sd_bus **bus) { |
a567261a | 1043 | Iterator i; |
8367fea5 | 1044 | Unit *u; |
718db961 | 1045 | Job *j; |
a567261a | 1046 | |
718db961 LP |
1047 | assert(m); |
1048 | assert(bus); | |
5e8d1c9a | 1049 | |
718db961 | 1050 | if (!*bus) |
cbd37330 | 1051 | return; |
f278026d | 1052 | |
8367fea5 LP |
1053 | /* Make sure all bus slots watching names are released. */ |
1054 | HASHMAP_FOREACH(u, m->watch_bus, i) { | |
1055 | if (!u->match_bus_slot) | |
1056 | continue; | |
1057 | ||
1058 | if (sd_bus_slot_get_bus(u->match_bus_slot) != *bus) | |
1059 | continue; | |
1060 | ||
1061 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
1062 | } | |
1063 | ||
718db961 | 1064 | /* Get rid of tracked clients on this bus */ |
8f8f05a9 LP |
1065 | if (m->subscribed && sd_bus_track_get_bus(m->subscribed) == *bus) |
1066 | m->subscribed = sd_bus_track_unref(m->subscribed); | |
1067 | ||
718db961 | 1068 | HASHMAP_FOREACH(j, m->jobs, i) |
1a465207 LP |
1069 | if (j->bus_track && sd_bus_track_get_bus(j->bus_track) == *bus) |
1070 | j->bus_track = sd_bus_track_unref(j->bus_track); | |
c1e1601e | 1071 | |
718db961 | 1072 | /* Get rid of queued message on this bus */ |
8f88ecf6 LP |
1073 | if (m->queued_message && sd_bus_message_get_bus(m->queued_message) == *bus) |
1074 | m->queued_message = sd_bus_message_unref(m->queued_message); | |
f278026d | 1075 | |
718db961 LP |
1076 | /* Possibly flush unwritten data, but only if we are |
1077 | * unprivileged, since we don't want to sync here */ | |
463d0d15 | 1078 | if (!MANAGER_IS_SYSTEM(m)) |
718db961 | 1079 | sd_bus_flush(*bus); |
5e8d1c9a | 1080 | |
718db961 LP |
1081 | /* And destroy the object */ |
1082 | sd_bus_close(*bus); | |
1083 | *bus = sd_bus_unref(*bus); | |
5e8d1c9a LP |
1084 | } |
1085 | ||
1086 | void bus_done(Manager *m) { | |
718db961 | 1087 | sd_bus *b; |
05e343b7 LP |
1088 | |
1089 | assert(m); | |
05e343b7 | 1090 | |
718db961 LP |
1091 | if (m->api_bus) |
1092 | destroy_bus(m, &m->api_bus); | |
1093 | if (m->system_bus) | |
1094 | destroy_bus(m, &m->system_bus); | |
1095 | while ((b = set_steal_first(m->private_buses))) | |
1096 | destroy_bus(m, &b); | |
05e343b7 | 1097 | |
525d3cc7 | 1098 | m->private_buses = set_free(m->private_buses); |
8f8f05a9 LP |
1099 | |
1100 | m->subscribed = sd_bus_track_unref(m->subscribed); | |
6796073e | 1101 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); |
05e343b7 | 1102 | |
718db961 LP |
1103 | if (m->private_listen_event_source) |
1104 | m->private_listen_event_source = sd_event_source_unref(m->private_listen_event_source); | |
05e343b7 | 1105 | |
03e334a1 | 1106 | m->private_listen_fd = safe_close(m->private_listen_fd); |
283868e1 SW |
1107 | |
1108 | bus_verify_polkit_async_registry_free(m->polkit_registry); | |
a567261a | 1109 | } |
b23de6af LP |
1110 | |
1111 | int bus_fdset_add_all(Manager *m, FDSet *fds) { | |
1112 | Iterator i; | |
718db961 LP |
1113 | sd_bus *b; |
1114 | int fd; | |
b23de6af LP |
1115 | |
1116 | assert(m); | |
1117 | assert(fds); | |
1118 | ||
1119 | /* When we are about to reexecute we add all D-Bus fds to the | |
1120 | * set to pass over to the newly executed systemd. They won't | |
718db961 | 1121 | * be used there however, except thatt they are closed at the |
b23de6af | 1122 | * very end of deserialization, those making it possible for |
44143309 | 1123 | * clients to synchronously wait for systemd to reexec by |
b23de6af LP |
1124 | * simply waiting for disconnection */ |
1125 | ||
718db961 LP |
1126 | if (m->api_bus) { |
1127 | fd = sd_bus_get_fd(m->api_bus); | |
1128 | if (fd >= 0) { | |
b23de6af | 1129 | fd = fdset_put_dup(fds, fd); |
b23de6af LP |
1130 | if (fd < 0) |
1131 | return fd; | |
1132 | } | |
1133 | } | |
1134 | ||
718db961 LP |
1135 | SET_FOREACH(b, m->private_buses, i) { |
1136 | fd = sd_bus_get_fd(b); | |
1137 | if (fd >= 0) { | |
b23de6af | 1138 | fd = fdset_put_dup(fds, fd); |
b23de6af LP |
1139 | if (fd < 0) |
1140 | return fd; | |
1141 | } | |
1142 | } | |
1143 | ||
718db961 LP |
1144 | /* We don't offer any APIs on the system bus (well, unless it |
1145 | * is the same as the API bus) hence we don't bother with it | |
1146 | * here */ | |
6fa48533 | 1147 | |
718db961 | 1148 | return 0; |
6fa48533 LP |
1149 | } |
1150 | ||
8f8f05a9 LP |
1151 | int bus_foreach_bus( |
1152 | Manager *m, | |
1153 | sd_bus_track *subscribed2, | |
1154 | int (*send_message)(sd_bus *bus, void *userdata), | |
1155 | void *userdata) { | |
1156 | ||
1157 | Iterator i; | |
1158 | sd_bus *b; | |
1159 | int r, ret = 0; | |
1160 | ||
ff9b60f3 | 1161 | /* Send to all direct buses, unconditionally */ |
8f8f05a9 LP |
1162 | SET_FOREACH(b, m->private_buses, i) { |
1163 | r = send_message(b, userdata); | |
1164 | if (r < 0) | |
1165 | ret = r; | |
1166 | } | |
1167 | ||
1168 | /* Send to API bus, but only if somebody is subscribed */ | |
1169 | if (sd_bus_track_count(m->subscribed) > 0 || | |
1170 | sd_bus_track_count(subscribed2) > 0) { | |
1171 | r = send_message(m->api_bus, userdata); | |
1172 | if (r < 0) | |
1173 | ret = r; | |
1174 | } | |
1175 | ||
1176 | return ret; | |
1177 | } | |
1178 | ||
05a98afd | 1179 | void bus_track_serialize(sd_bus_track *t, FILE *f, const char *prefix) { |
8f8f05a9 LP |
1180 | const char *n; |
1181 | ||
6fa48533 | 1182 | assert(f); |
05a98afd | 1183 | assert(prefix); |
6fa48533 | 1184 | |
05a98afd LP |
1185 | for (n = sd_bus_track_first(t); n; n = sd_bus_track_next(t)) { |
1186 | int c, j; | |
230314d7 | 1187 | |
05a98afd | 1188 | c = sd_bus_track_count_name(t, n); |
8f8f05a9 | 1189 | |
05a98afd LP |
1190 | for (j = 0; j < c; j++) { |
1191 | fputs(prefix, f); | |
1192 | fputc('=', f); | |
1193 | fputs(n, f); | |
1194 | fputc('\n', f); | |
1195 | } | |
1196 | } | |
8f8f05a9 LP |
1197 | } |
1198 | ||
05a98afd | 1199 | int bus_track_coldplug(Manager *m, sd_bus_track **t, bool recursive, char **l) { |
8f8f05a9 LP |
1200 | int r = 0; |
1201 | ||
1202 | assert(m); | |
1203 | assert(t); | |
8f8f05a9 | 1204 | |
05a98afd LP |
1205 | if (strv_isempty(l)) |
1206 | return 0; | |
8f8f05a9 | 1207 | |
05a98afd LP |
1208 | if (!m->api_bus) |
1209 | return 0; | |
8f8f05a9 | 1210 | |
05a98afd LP |
1211 | if (!*t) { |
1212 | r = sd_bus_track_new(m->api_bus, t, NULL, NULL); | |
1213 | if (r < 0) | |
1214 | return r; | |
8f8f05a9 LP |
1215 | } |
1216 | ||
05a98afd LP |
1217 | r = sd_bus_track_set_recursive(*t, recursive); |
1218 | if (r < 0) | |
1219 | return r; | |
1220 | ||
984794ba | 1221 | return bus_track_add_name_many(*t, l); |
6fa48533 | 1222 | } |
283868e1 | 1223 | |
1d22e906 | 1224 | int bus_verify_manage_units_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { |
403ed0e5 | 1225 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.manage-units", NULL, false, UID_INVALID, &m->polkit_registry, error); |
283868e1 SW |
1226 | } |
1227 | ||
283868e1 | 1228 | int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { |
403ed0e5 | 1229 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.manage-unit-files", NULL, false, UID_INVALID, &m->polkit_registry, error); |
283868e1 SW |
1230 | } |
1231 | ||
1232 | int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
403ed0e5 | 1233 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.reload-daemon", NULL, false, UID_INVALID, &m->polkit_registry, error); |
283868e1 | 1234 | } |
1d22e906 LP |
1235 | |
1236 | int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
403ed0e5 | 1237 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.set-environment", NULL, false, UID_INVALID, &m->polkit_registry, error); |
1d22e906 | 1238 | } |