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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
ea430986 | 3 | #include <errno.h> |
07630cea | 4 | #include <sys/epoll.h> |
ea430986 LP |
5 | #include <unistd.h> |
6 | ||
718db961 | 7 | #include "sd-bus.h" |
07630cea | 8 | |
b5efdb8a | 9 | #include "alloc-util.h" |
07630cea LP |
10 | #include "bus-common-errors.h" |
11 | #include "bus-error.h" | |
12 | #include "bus-internal.h" | |
269e4d2d | 13 | #include "bus-polkit.h" |
c0f765ca | 14 | #include "bus-util.h" |
bbc1acab | 15 | #include "dbus-automount.h" |
07630cea | 16 | #include "dbus-cgroup.h" |
bbc1acab | 17 | #include "dbus-device.h" |
718db961 | 18 | #include "dbus-execute.h" |
07630cea | 19 | #include "dbus-job.h" |
718db961 | 20 | #include "dbus-kill.h" |
07630cea | 21 | #include "dbus-manager.h" |
bbc1acab YW |
22 | #include "dbus-mount.h" |
23 | #include "dbus-path.h" | |
24 | #include "dbus-scope.h" | |
25 | #include "dbus-service.h" | |
26 | #include "dbus-slice.h" | |
27 | #include "dbus-socket.h" | |
28 | #include "dbus-swap.h" | |
29 | #include "dbus-target.h" | |
30 | #include "dbus-timer.h" | |
07630cea | 31 | #include "dbus-unit.h" |
3ffd4af2 LP |
32 | #include "dbus.h" |
33 | #include "fd-util.h" | |
5b5e6dea | 34 | #include "fs-util.h" |
07630cea | 35 | #include "log.h" |
07630cea | 36 | #include "mkdir.h" |
dccca82b | 37 | #include "process-util.h" |
07630cea | 38 | #include "selinux-access.h" |
d68c645b | 39 | #include "serialize.h" |
57b7a260 | 40 | #include "service.h" |
8f6df3fa | 41 | #include "special.h" |
07630cea LP |
42 | #include "string-util.h" |
43 | #include "strv.h" | |
718db961 | 44 | #include "strxcpyx.h" |
ee104e11 | 45 | #include "user-util.h" |
4288f619 | 46 | |
cbecf9bf | 47 | #define CONNECTIONS_MAX 4096 |
5e8d1c9a | 48 | |
718db961 LP |
49 | static void destroy_bus(Manager *m, sd_bus **bus); |
50 | ||
209de525 | 51 | int bus_send_pending_reload_message(Manager *m) { |
718db961 | 52 | int r; |
8e274523 | 53 | |
8e274523 | 54 | assert(m); |
2e317f52 | 55 | |
209de525 | 56 | if (!m->pending_reload_message) |
718db961 | 57 | return 0; |
8e274523 | 58 | |
4b66bcca LP |
59 | /* If we cannot get rid of this message we won't dispatch any D-Bus messages, so that we won't end up wanting |
60 | * to queue another message. */ | |
ea430986 | 61 | |
209de525 | 62 | r = sd_bus_send(NULL, m->pending_reload_message, NULL); |
718db961 | 63 | if (r < 0) |
4b66bcca | 64 | log_warning_errno(r, "Failed to send queued message, ignoring: %m"); |
ea430986 | 65 | |
209de525 | 66 | m->pending_reload_message = sd_bus_message_unref(m->pending_reload_message); |
ea430986 | 67 | |
718db961 | 68 | return 0; |
ea430986 LP |
69 | } |
70 | ||
d8fdc620 LP |
71 | int bus_forward_agent_released(Manager *m, const char *path) { |
72 | int r; | |
73 | ||
74 | assert(m); | |
75 | assert(path); | |
76 | ||
77 | if (!MANAGER_IS_SYSTEM(m)) | |
78 | return 0; | |
79 | ||
80 | if (!m->system_bus) | |
81 | return 0; | |
82 | ||
83 | /* If we are running a system instance we forward the agent message on the system bus, so that the user | |
84 | * instances get notified about this, too */ | |
85 | ||
86 | r = sd_bus_emit_signal(m->system_bus, | |
87 | "/org/freedesktop/systemd1/agent", | |
88 | "org.freedesktop.systemd1.Agent", | |
89 | "Released", | |
90 | "s", path); | |
91 | if (r < 0) | |
d5f15326 | 92 | return log_debug_errno(r, "Failed to propagate agent release message: %m"); |
d8fdc620 LP |
93 | |
94 | return 1; | |
95 | } | |
96 | ||
19070062 | 97 | static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
4afd3348 | 98 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 | 99 | Manager *m = userdata; |
d8fdc620 | 100 | const char *cgroup; |
0a069ce6 | 101 | uid_t sender_uid; |
718db961 | 102 | int r; |
ea430986 | 103 | |
718db961 | 104 | assert(message); |
ea430986 LP |
105 | assert(m); |
106 | ||
0a069ce6 DH |
107 | /* only accept org.freedesktop.systemd1.Agent from UID=0 */ |
108 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); | |
109 | if (r < 0) | |
110 | return r; | |
111 | ||
112 | r = sd_bus_creds_get_euid(creds, &sender_uid); | |
113 | if (r < 0 || sender_uid != 0) | |
114 | return 0; | |
115 | ||
116 | /* parse 'cgroup-empty' notification */ | |
718db961 LP |
117 | r = sd_bus_message_read(message, "s", &cgroup); |
118 | if (r < 0) { | |
119 | bus_log_parse_error(r); | |
120 | return 0; | |
121 | } | |
ea430986 | 122 | |
718db961 | 123 | manager_notify_cgroup_empty(m, cgroup); |
718db961 LP |
124 | return 0; |
125 | } | |
ea430986 | 126 | |
19070062 | 127 | static int signal_disconnected(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
718db961 | 128 | Manager *m = userdata; |
19070062 | 129 | sd_bus *bus; |
ea430986 | 130 | |
718db961 LP |
131 | assert(message); |
132 | assert(m); | |
19070062 | 133 | assert_se(bus = sd_bus_message_get_bus(message)); |
ea430986 | 134 | |
718db961 | 135 | if (bus == m->api_bus) |
4502c403 | 136 | bus_done_api(m); |
718db961 | 137 | if (bus == m->system_bus) |
4502c403 LP |
138 | bus_done_system(m); |
139 | ||
718db961 LP |
140 | if (set_remove(m->private_buses, bus)) { |
141 | log_debug("Got disconnect on private connection."); | |
142 | destroy_bus(m, &bus); | |
ea430986 LP |
143 | } |
144 | ||
718db961 | 145 | return 0; |
ea430986 LP |
146 | } |
147 | ||
19070062 | 148 | static int signal_activation_request(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
4afd3348 LP |
149 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
150 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
718db961 LP |
151 | Manager *m = userdata; |
152 | const char *name; | |
153 | Unit *u; | |
154 | int r; | |
ea430986 | 155 | |
718db961 | 156 | assert(message); |
ea430986 LP |
157 | assert(m); |
158 | ||
718db961 LP |
159 | r = sd_bus_message_read(message, "s", &name); |
160 | if (r < 0) { | |
161 | bus_log_parse_error(r); | |
162 | return 0; | |
163 | } | |
ea430986 | 164 | |
718db961 LP |
165 | if (manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SERVICE) || |
166 | manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SOCKET)) { | |
167 | r = sd_bus_error_setf(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is shutting down."); | |
168 | goto failed; | |
169 | } | |
ea430986 | 170 | |
718db961 LP |
171 | r = manager_load_unit(m, name, NULL, &error, &u); |
172 | if (r < 0) | |
173 | goto failed; | |
ea430986 | 174 | |
718db961 | 175 | if (u->refuse_manual_start) { |
7e974e85 | 176 | 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 | 177 | goto failed; |
ea430986 LP |
178 | } |
179 | ||
50cbaba4 | 180 | r = manager_add_job(m, JOB_START, u, JOB_REPLACE, NULL, &error, NULL); |
718db961 LP |
181 | if (r < 0) |
182 | goto failed; | |
ea430986 | 183 | |
718db961 | 184 | /* Successfully queued, that's it for us */ |
ea430986 | 185 | return 0; |
ea430986 | 186 | |
718db961 LP |
187 | failed: |
188 | if (!sd_bus_error_is_set(&error)) | |
189 | sd_bus_error_set_errno(&error, r); | |
ea430986 | 190 | |
718db961 | 191 | log_debug("D-Bus activation failed for %s: %s", name, bus_error_message(&error, r)); |
ea430986 | 192 | |
966c66e3 | 193 | r = sd_bus_message_new_signal(sd_bus_message_get_bus(message), &reply, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Activator", "ActivationFailure"); |
718db961 LP |
194 | if (r < 0) { |
195 | bus_log_create_error(r); | |
196 | return 0; | |
197 | } | |
198 | ||
fa0fed49 | 199 | r = sd_bus_message_append(reply, "sss", name, error.name, error.message); |
718db961 LP |
200 | if (r < 0) { |
201 | bus_log_create_error(r); | |
202 | return 0; | |
203 | } | |
204 | ||
966c66e3 | 205 | r = sd_bus_send_to(NULL, reply, "org.freedesktop.DBus", NULL); |
23bbb0de MS |
206 | if (r < 0) |
207 | return log_error_errno(r, "Failed to respond with to bus activation request: %m"); | |
ea430986 | 208 | |
718db961 | 209 | return 0; |
ea430986 LP |
210 | } |
211 | ||
349cc4a5 | 212 | #if HAVE_SELINUX |
19070062 | 213 | static int mac_selinux_filter(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
969987ea LP |
214 | Manager *m = userdata; |
215 | const char *verb, *path; | |
216 | Unit *u = NULL; | |
217 | Job *j; | |
218 | int r; | |
219 | ||
969987ea LP |
220 | assert(message); |
221 | ||
222 | /* Our own method calls are all protected individually with | |
223 | * selinux checks, but the built-in interfaces need to be | |
224 | * protected too. */ | |
225 | ||
226 | if (sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Properties", "Set")) | |
227 | verb = "reload"; | |
228 | else if (sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", NULL) || | |
229 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Properties", NULL) || | |
230 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.ObjectManager", NULL) || | |
231 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Peer", NULL)) | |
232 | verb = "status"; | |
233 | else | |
234 | return 0; | |
235 | ||
236 | path = sd_bus_message_get_path(message); | |
237 | ||
238 | if (object_path_startswith("/org/freedesktop/systemd1", path)) { | |
8a188de9 | 239 | r = mac_selinux_access_check(message, verb, error); |
969987ea LP |
240 | if (r < 0) |
241 | return r; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) { | |
4afd3348 | 247 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
969987ea LP |
248 | pid_t pid; |
249 | ||
5b12334d LP |
250 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); |
251 | if (r < 0) | |
252 | return 0; | |
253 | ||
254 | r = sd_bus_creds_get_pid(creds, &pid); | |
969987ea LP |
255 | if (r < 0) |
256 | return 0; | |
257 | ||
258 | u = manager_get_unit_by_pid(m, pid); | |
259 | } else { | |
260 | r = manager_get_job_from_dbus_path(m, path, &j); | |
261 | if (r >= 0) | |
262 | u = j->unit; | |
263 | else | |
264 | manager_load_unit_from_dbus_path(m, path, NULL, &u); | |
265 | } | |
969987ea LP |
266 | if (!u) |
267 | return 0; | |
268 | ||
8a188de9 | 269 | r = mac_selinux_unit_access_check(u, message, verb, error); |
969987ea LP |
270 | if (r < 0) |
271 | return r; | |
272 | ||
273 | return 0; | |
274 | } | |
ad5b215d | 275 | #endif |
969987ea | 276 | |
f00c3121 | 277 | static int find_unit(Manager *m, sd_bus *bus, const char *path, Unit **unit, sd_bus_error *error) { |
a8cfb1b3 | 278 | Unit *u = NULL; /* just to appease gcc, initialization is not really necessary */ |
718db961 | 279 | int r; |
ea430986 | 280 | |
718db961 LP |
281 | assert(m); |
282 | assert(bus); | |
283 | assert(path); | |
ea430986 | 284 | |
718db961 | 285 | if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) { |
4afd3348 | 286 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
718db961 LP |
287 | sd_bus_message *message; |
288 | pid_t pid; | |
ea430986 | 289 | |
19befb2d | 290 | message = sd_bus_get_current_message(bus); |
718db961 | 291 | if (!message) |
f00c3121 | 292 | return 0; |
ea430986 | 293 | |
5b12334d | 294 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); |
718db961 | 295 | if (r < 0) |
5b12334d LP |
296 | return r; |
297 | ||
298 | r = sd_bus_creds_get_pid(creds, &pid); | |
299 | if (r < 0) | |
300 | return r; | |
ea430986 | 301 | |
718db961 | 302 | u = manager_get_unit_by_pid(m, pid); |
a8cfb1b3 ZJS |
303 | if (!u) |
304 | return 0; | |
718db961 | 305 | } else { |
f00c3121 | 306 | r = manager_load_unit_from_dbus_path(m, path, error, &u); |
718db961 | 307 | if (r < 0) |
f00c3121 | 308 | return 0; |
a8cfb1b3 | 309 | assert(u); |
718db961 | 310 | } |
ea430986 | 311 | |
f00c3121 LP |
312 | *unit = u; |
313 | return 1; | |
ea430986 LP |
314 | } |
315 | ||
f00c3121 | 316 | static int bus_unit_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { |
718db961 | 317 | Manager *m = userdata; |
ea430986 | 318 | |
718db961 LP |
319 | assert(bus); |
320 | assert(path); | |
321 | assert(interface); | |
322 | assert(found); | |
ea430986 LP |
323 | assert(m); |
324 | ||
f00c3121 | 325 | return find_unit(m, bus, path, (Unit**) found, error); |
ea430986 LP |
326 | } |
327 | ||
f00c3121 | 328 | 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 |
329 | Manager *m = userdata; |
330 | Unit *u; | |
f00c3121 | 331 | int r; |
ea430986 | 332 | |
718db961 LP |
333 | assert(bus); |
334 | assert(path); | |
335 | assert(interface); | |
336 | assert(found); | |
ea430986 LP |
337 | assert(m); |
338 | ||
f00c3121 LP |
339 | r = find_unit(m, bus, path, &u, error); |
340 | if (r <= 0) | |
341 | return r; | |
3df5bf61 | 342 | |
21b735e7 | 343 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 344 | return 0; |
ea430986 | 345 | |
718db961 LP |
346 | *found = u; |
347 | return 1; | |
ea430986 LP |
348 | } |
349 | ||
f00c3121 | 350 | 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 |
351 | Manager *m = userdata; |
352 | Unit *u; | |
f00c3121 | 353 | int r; |
c1e1601e | 354 | |
718db961 LP |
355 | assert(bus); |
356 | assert(path); | |
357 | assert(interface); | |
358 | assert(found); | |
c1e1601e LP |
359 | assert(m); |
360 | ||
f00c3121 LP |
361 | r = find_unit(m, bus, path, &u, error); |
362 | if (r <= 0) | |
363 | return r; | |
05e343b7 | 364 | |
21b735e7 | 365 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 366 | return 0; |
05e343b7 | 367 | |
35b7ff80 | 368 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) |
718db961 | 369 | return 0; |
0034c15c | 370 | |
718db961 LP |
371 | *found = u; |
372 | return 1; | |
373 | } | |
0034c15c | 374 | |
f00c3121 | 375 | 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 |
376 | Manager *m = userdata; |
377 | CGroupContext *c; | |
378 | Unit *u; | |
f00c3121 | 379 | int r; |
af25ec12 | 380 | |
718db961 LP |
381 | assert(bus); |
382 | assert(path); | |
383 | assert(interface); | |
384 | assert(found); | |
385 | assert(m); | |
0034c15c | 386 | |
f00c3121 LP |
387 | r = find_unit(m, bus, path, &u, error); |
388 | if (r <= 0) | |
389 | return r; | |
0034c15c | 390 | |
21b735e7 | 391 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 392 | return 0; |
0034c15c | 393 | |
718db961 LP |
394 | c = unit_get_cgroup_context(u); |
395 | if (!c) | |
396 | return 0; | |
c1e1601e | 397 | |
718db961 LP |
398 | *found = c; |
399 | return 1; | |
400 | } | |
0034c15c | 401 | |
f00c3121 | 402 | 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 |
403 | Manager *m = userdata; |
404 | ExecContext *c; | |
405 | Unit *u; | |
f00c3121 | 406 | int r; |
0034c15c | 407 | |
718db961 LP |
408 | assert(bus); |
409 | assert(path); | |
410 | assert(interface); | |
411 | assert(found); | |
412 | assert(m); | |
0034c15c | 413 | |
f00c3121 LP |
414 | r = find_unit(m, bus, path, &u, error); |
415 | if (r <= 0) | |
416 | return r; | |
0034c15c | 417 | |
21b735e7 | 418 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 419 | return 0; |
0034c15c | 420 | |
718db961 LP |
421 | c = unit_get_exec_context(u); |
422 | if (!c) | |
423 | return 0; | |
0034c15c | 424 | |
718db961 LP |
425 | *found = c; |
426 | return 1; | |
c1e1601e LP |
427 | } |
428 | ||
f00c3121 | 429 | 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 |
430 | Manager *m = userdata; |
431 | KillContext *c; | |
432 | Unit *u; | |
f00c3121 | 433 | int r; |
8e274523 | 434 | |
718db961 LP |
435 | assert(bus); |
436 | assert(path); | |
437 | assert(interface); | |
438 | assert(found); | |
8e274523 LP |
439 | assert(m); |
440 | ||
f00c3121 LP |
441 | r = find_unit(m, bus, path, &u, error); |
442 | if (r <= 0) | |
443 | return r; | |
8e274523 | 444 | |
21b735e7 | 445 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) |
718db961 | 446 | return 0; |
8e274523 | 447 | |
718db961 LP |
448 | c = unit_get_kill_context(u); |
449 | if (!c) | |
450 | return 0; | |
53c6a358 | 451 | |
718db961 LP |
452 | *found = c; |
453 | return 1; | |
454 | } | |
8e274523 | 455 | |
f00c3121 | 456 | static int bus_unit_enumerate(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { |
f0c03de8 | 457 | _cleanup_strv_free_ char **l = NULL; |
718db961 LP |
458 | Manager *m = userdata; |
459 | unsigned k = 0; | |
718db961 | 460 | Unit *u; |
3c661fad | 461 | |
718db961 LP |
462 | l = new0(char*, hashmap_size(m->units)+1); |
463 | if (!l) | |
464 | return -ENOMEM; | |
53c6a358 | 465 | |
90e74a66 | 466 | HASHMAP_FOREACH(u, m->units) { |
718db961 LP |
467 | l[k] = unit_dbus_path(u); |
468 | if (!l[k]) | |
469 | return -ENOMEM; | |
53c6a358 | 470 | |
718db961 | 471 | k++; |
3c661fad LP |
472 | } |
473 | ||
ae2a15bc | 474 | *nodes = TAKE_PTR(l); |
5e8d1c9a | 475 | |
718db961 | 476 | return k; |
5e8d1c9a LP |
477 | } |
478 | ||
f6e9aa9e ZJS |
479 | static const BusObjectImplementation unit_object = { |
480 | "/org/freedesktop/systemd1/unit", | |
481 | "org.freedesktop.systemd1.Unit", | |
482 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
483 | { bus_unit_vtable, bus_unit_find }), | |
484 | .node_enumerator = bus_unit_enumerate, | |
485 | }; | |
486 | ||
487 | static const BusObjectImplementation bus_automount_object = { | |
488 | "/org/freedesktop/systemd1/unit", | |
489 | "org.freedesktop.systemd1.Automount", | |
490 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
491 | { bus_automount_vtable, bus_unit_interface_find }), | |
492 | }; | |
493 | ||
494 | static const BusObjectImplementation bus_device_object = { | |
495 | "/org/freedesktop/systemd1/unit", | |
496 | "org.freedesktop.systemd1.Device", | |
497 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
498 | { bus_device_vtable, bus_unit_interface_find }), | |
499 | }; | |
500 | ||
501 | static const BusObjectImplementation bus_mount_object = { | |
502 | "/org/freedesktop/systemd1/unit", | |
503 | "org.freedesktop.systemd1.Mount", | |
504 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
505 | { bus_mount_vtable, bus_unit_interface_find }, | |
506 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
507 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
508 | { bus_exec_vtable, bus_exec_context_find }, | |
509 | { bus_kill_vtable, bus_kill_context_find }), | |
510 | }; | |
511 | ||
512 | static const BusObjectImplementation bus_path_object = { | |
513 | "/org/freedesktop/systemd1/unit", | |
514 | "org.freedesktop.systemd1.Path", | |
515 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
516 | { bus_path_vtable, bus_unit_interface_find }), | |
517 | }; | |
518 | ||
519 | static const BusObjectImplementation bus_scope_object = { | |
520 | "/org/freedesktop/systemd1/unit", | |
521 | "org.freedesktop.systemd1.Scope", | |
522 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
523 | { bus_scope_vtable, bus_unit_interface_find }, | |
524 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
525 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
526 | { bus_kill_vtable, bus_kill_context_find }), | |
527 | }; | |
528 | ||
529 | static const BusObjectImplementation bus_service_object = { | |
530 | "/org/freedesktop/systemd1/unit", | |
531 | "org.freedesktop.systemd1.Service", | |
532 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
533 | { bus_service_vtable, bus_unit_interface_find }, | |
534 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
535 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
536 | { bus_exec_vtable, bus_exec_context_find }, | |
537 | { bus_kill_vtable, bus_kill_context_find }), | |
538 | }; | |
539 | ||
540 | static const BusObjectImplementation bus_slice_object = { | |
541 | "/org/freedesktop/systemd1/unit", | |
542 | "org.freedesktop.systemd1.Slice", | |
543 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
544 | { bus_slice_vtable, bus_unit_interface_find }, | |
545 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
546 | { bus_cgroup_vtable, bus_cgroup_context_find }), | |
547 | }; | |
548 | ||
549 | static const BusObjectImplementation bus_socket_object = { | |
550 | "/org/freedesktop/systemd1/unit", | |
551 | "org.freedesktop.systemd1.Socket", | |
552 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
553 | { bus_socket_vtable, bus_unit_interface_find }, | |
554 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
555 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
556 | { bus_exec_vtable, bus_exec_context_find }, | |
557 | { bus_kill_vtable, bus_kill_context_find }), | |
558 | }; | |
559 | ||
560 | static const BusObjectImplementation bus_swap_object = { | |
561 | "/org/freedesktop/systemd1/unit", | |
562 | "org.freedesktop.systemd1.Swap", | |
563 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
564 | { bus_swap_vtable, bus_unit_interface_find }, | |
565 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
566 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
567 | { bus_exec_vtable, bus_exec_context_find }, | |
568 | { bus_kill_vtable, bus_kill_context_find }), | |
569 | }; | |
570 | ||
571 | static const BusObjectImplementation bus_target_object = { | |
572 | "/org/freedesktop/systemd1/unit", | |
573 | "org.freedesktop.systemd1.Target", | |
574 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
575 | { bus_target_vtable, bus_unit_interface_find }), | |
576 | }; | |
577 | ||
578 | static const BusObjectImplementation bus_timer_object = { | |
579 | "/org/freedesktop/systemd1/unit", | |
580 | "org.freedesktop.systemd1.Timer", | |
581 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
582 | { bus_timer_vtable, bus_unit_interface_find }), | |
583 | }; | |
584 | ||
585 | static const BusObjectImplementation bus_manager_object = { | |
586 | "/org/freedesktop/systemd1", | |
587 | "org.freedesktop.systemd1.Manager", | |
588 | .vtables = BUS_VTABLES(bus_manager_vtable), | |
589 | .children = BUS_IMPLEMENTATIONS( | |
590 | &job_object, | |
591 | &unit_object, | |
592 | &bus_automount_object, | |
593 | &bus_device_object, | |
594 | &bus_mount_object, | |
595 | &bus_path_object, | |
596 | &bus_scope_object, | |
597 | &bus_service_object, | |
598 | &bus_slice_object, | |
599 | &bus_socket_object, | |
600 | &bus_swap_object, | |
601 | &bus_target_object, | |
602 | &bus_timer_object), | |
603 | }; | |
604 | ||
605 | static const BusObjectImplementation manager_log_control_object = { | |
606 | "/org/freedesktop/LogControl1", | |
607 | "org.freedesktop.LogControl1", | |
608 | .vtables = BUS_VTABLES(bus_manager_log_control_vtable), | |
609 | }; | |
610 | ||
5c08257b ZJS |
611 | int bus_manager_introspect_implementations(FILE *out, const char *pattern) { |
612 | return bus_introspect_implementations( | |
613 | out, | |
614 | pattern, | |
615 | BUS_IMPLEMENTATIONS(&bus_manager_object, | |
616 | &manager_log_control_object)); | |
617 | } | |
618 | ||
718db961 | 619 | static int bus_setup_api_vtables(Manager *m, sd_bus *bus) { |
718db961 | 620 | int r; |
5e8d1c9a | 621 | |
ea430986 | 622 | assert(m); |
718db961 | 623 | assert(bus); |
ea430986 | 624 | |
349cc4a5 | 625 | #if HAVE_SELINUX |
8a188de9 | 626 | r = sd_bus_add_filter(bus, NULL, mac_selinux_filter, m); |
23bbb0de MS |
627 | if (r < 0) |
628 | return log_error_errno(r, "Failed to add SELinux access filter: %m"); | |
ad5b215d | 629 | #endif |
969987ea | 630 | |
f6e9aa9e | 631 | r = bus_add_implementation(bus, &bus_manager_object, m); |
23bbb0de | 632 | if (r < 0) |
f6e9aa9e | 633 | return r; |
61902ea3 | 634 | |
f6e9aa9e | 635 | return bus_add_implementation(bus, &manager_log_control_object, m); |
61902ea3 LP |
636 | } |
637 | ||
718db961 LP |
638 | static int bus_setup_disconnected_match(Manager *m, sd_bus *bus) { |
639 | int r; | |
61902ea3 | 640 | |
718db961 LP |
641 | assert(m); |
642 | assert(bus); | |
61902ea3 | 643 | |
75152a4d | 644 | r = sd_bus_match_signal_async( |
718db961 | 645 | bus, |
19befb2d | 646 | NULL, |
75152a4d LP |
647 | "org.freedesktop.DBus.Local", |
648 | "/org/freedesktop/DBus/Local", | |
649 | "org.freedesktop.DBus.Local", | |
650 | "Disconnected", | |
651 | signal_disconnected, NULL, m); | |
23bbb0de | 652 | if (r < 0) |
75152a4d | 653 | return log_error_errno(r, "Failed to request match for Disconnected message: %m"); |
05e343b7 | 654 | |
718db961 | 655 | return 0; |
ea430986 LP |
656 | } |
657 | ||
718db961 | 658 | static int bus_on_connection(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
bd62b744 | 659 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
718db961 | 660 | _cleanup_close_ int nfd = -1; |
6dded4c7 | 661 | Manager *m = userdata; |
718db961 LP |
662 | sd_id128_t id; |
663 | int r; | |
6dded4c7 | 664 | |
718db961 | 665 | assert(s); |
6dded4c7 LP |
666 | assert(m); |
667 | ||
718db961 LP |
668 | nfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC); |
669 | if (nfd < 0) { | |
4ff9bc2e LP |
670 | if (ERRNO_IS_ACCEPT_AGAIN(errno)) |
671 | return 0; | |
672 | ||
56f64d95 | 673 | log_warning_errno(errno, "Failed to accept private connection, ignoring: %m"); |
718db961 LP |
674 | return 0; |
675 | } | |
6dded4c7 | 676 | |
718db961 LP |
677 | if (set_size(m->private_buses) >= CONNECTIONS_MAX) { |
678 | log_warning("Too many concurrent connections, refusing"); | |
679 | return 0; | |
680 | } | |
6dded4c7 | 681 | |
d5099efc | 682 | r = set_ensure_allocated(&m->private_buses, NULL); |
718db961 LP |
683 | if (r < 0) { |
684 | log_oom(); | |
685 | return 0; | |
686 | } | |
6dded4c7 | 687 | |
718db961 LP |
688 | r = sd_bus_new(&bus); |
689 | if (r < 0) { | |
da927ba9 | 690 | log_warning_errno(r, "Failed to allocate new private connection bus: %m"); |
718db961 LP |
691 | return 0; |
692 | } | |
6dded4c7 | 693 | |
030fa56c LP |
694 | (void) sd_bus_set_description(bus, "private-bus-connection"); |
695 | ||
718db961 LP |
696 | r = sd_bus_set_fd(bus, nfd, nfd); |
697 | if (r < 0) { | |
da927ba9 | 698 | log_warning_errno(r, "Failed to set fd on new connection bus: %m"); |
718db961 LP |
699 | return 0; |
700 | } | |
6dded4c7 | 701 | |
718db961 | 702 | nfd = -1; |
6dded4c7 | 703 | |
718db961 LP |
704 | r = bus_check_peercred(bus); |
705 | if (r < 0) { | |
da927ba9 | 706 | log_warning_errno(r, "Incoming private connection from unprivileged client, refusing: %m"); |
718db961 LP |
707 | return 0; |
708 | } | |
6dded4c7 | 709 | |
718db961 | 710 | assert_se(sd_id128_randomize(&id) >= 0); |
6dded4c7 | 711 | |
718db961 LP |
712 | r = sd_bus_set_server(bus, 1, id); |
713 | if (r < 0) { | |
da927ba9 | 714 | log_warning_errno(r, "Failed to enable server support for new connection bus: %m"); |
718db961 LP |
715 | return 0; |
716 | } | |
6dded4c7 | 717 | |
0674bbea LP |
718 | r = sd_bus_negotiate_creds(bus, 1, |
719 | SD_BUS_CREDS_PID|SD_BUS_CREDS_UID| | |
720 | SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS| | |
721 | SD_BUS_CREDS_SELINUX_CONTEXT); | |
722 | if (r < 0) { | |
723 | log_warning_errno(r, "Failed to enable credentials for new connection: %m"); | |
724 | return 0; | |
725 | } | |
726 | ||
a5ea30b7 LP |
727 | r = sd_bus_set_sender(bus, "org.freedesktop.systemd1"); |
728 | if (r < 0) { | |
729 | log_warning_errno(r, "Failed to set direct connection sender: %m"); | |
730 | return 0; | |
731 | } | |
732 | ||
718db961 LP |
733 | r = sd_bus_start(bus); |
734 | if (r < 0) { | |
da927ba9 | 735 | log_warning_errno(r, "Failed to start new connection bus: %m"); |
718db961 | 736 | return 0; |
6dded4c7 LP |
737 | } |
738 | ||
718db961 LP |
739 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
740 | if (r < 0) { | |
da927ba9 | 741 | log_warning_errno(r, "Failed to attach new connection bus to event loop: %m"); |
718db961 | 742 | return 0; |
6dded4c7 LP |
743 | } |
744 | ||
718db961 LP |
745 | r = bus_setup_disconnected_match(m, bus); |
746 | if (r < 0) | |
747 | return 0; | |
6dded4c7 | 748 | |
718db961 LP |
749 | r = bus_setup_api_vtables(m, bus); |
750 | if (r < 0) { | |
da927ba9 | 751 | log_warning_errno(r, "Failed to set up API vtables on new connection bus: %m"); |
718db961 LP |
752 | return 0; |
753 | } | |
6dded4c7 | 754 | |
718db961 LP |
755 | r = set_put(m->private_buses, bus); |
756 | if (r < 0) { | |
05a08cb6 | 757 | log_warning_errno(r, "Failed to add new connection bus to set: %m"); |
718db961 | 758 | return 0; |
6dded4c7 LP |
759 | } |
760 | ||
718db961 | 761 | bus = NULL; |
6dded4c7 | 762 | |
718db961 | 763 | log_debug("Accepted new private connection."); |
6dded4c7 | 764 | |
8e274523 LP |
765 | return 0; |
766 | } | |
767 | ||
718db961 | 768 | static int bus_setup_api(Manager *m, sd_bus *bus) { |
bbc29086 DM |
769 | char *name; |
770 | Unit *u; | |
718db961 | 771 | int r; |
f278026d | 772 | |
718db961 LP |
773 | assert(m); |
774 | assert(bus); | |
c1e1601e | 775 | |
8fd00193 LP |
776 | /* Let's make sure we have enough credential bits so that we can make security and selinux decisions */ |
777 | r = sd_bus_negotiate_creds(bus, 1, | |
778 | SD_BUS_CREDS_PID|SD_BUS_CREDS_UID| | |
779 | SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS| | |
780 | SD_BUS_CREDS_SELINUX_CONTEXT); | |
781 | if (r < 0) | |
da927ba9 | 782 | log_warning_errno(r, "Failed to enable credential passing, ignoring: %m"); |
8fd00193 | 783 | |
718db961 LP |
784 | r = bus_setup_api_vtables(m, bus); |
785 | if (r < 0) | |
786 | return r; | |
cbd37330 | 787 | |
90e74a66 | 788 | HASHMAP_FOREACH_KEY(u, name, m->watch_bus) { |
9806e87d | 789 | r = unit_install_bus_match(u, bus, name); |
bbc29086 | 790 | if (r < 0) |
8ea823b6 | 791 | log_error_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); |
bbc29086 | 792 | } |
718db961 | 793 | |
75152a4d | 794 | r = sd_bus_match_signal_async( |
718db961 | 795 | bus, |
19befb2d | 796 | NULL, |
75152a4d LP |
797 | "org.freedesktop.DBus", |
798 | "/org/freedesktop/DBus", | |
799 | "org.freedesktop.systemd1.Activator", | |
800 | "ActivationRequest", | |
801 | signal_activation_request, NULL, m); | |
718db961 | 802 | if (r < 0) |
da927ba9 | 803 | log_warning_errno(r, "Failed to subscribe to activation signal: %m"); |
cbd37330 | 804 | |
0c0b9306 LP |
805 | /* Allow replacing of our name, to ease implementation of reexecution, where we keep the old connection open |
806 | * until after the new connection is set up and the name installed to allow clients to synchronously wait for | |
807 | * reexecution to finish */ | |
808 | r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.systemd1", SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_ALLOW_REPLACEMENT, NULL, NULL); | |
23bbb0de | 809 | if (r < 0) |
0c0b9306 | 810 | return log_error_errno(r, "Failed to request name: %m"); |
53c6a358 | 811 | |
718db961 | 812 | log_debug("Successfully connected to API bus."); |
5f109056 | 813 | |
f278026d LP |
814 | return 0; |
815 | } | |
816 | ||
8559b3b7 | 817 | int bus_init_api(Manager *m) { |
b1a4981a | 818 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
f278026d LP |
819 | int r; |
820 | ||
718db961 LP |
821 | if (m->api_bus) |
822 | return 0; | |
cbd37330 | 823 | |
718db961 | 824 | /* The API and system bus is the same if we are running in system mode */ |
463d0d15 | 825 | if (MANAGER_IS_SYSTEM(m) && m->system_bus) |
718db961 LP |
826 | bus = sd_bus_ref(m->system_bus); |
827 | else { | |
463d0d15 | 828 | if (MANAGER_IS_SYSTEM(m)) |
56fbd718 | 829 | r = sd_bus_open_system_with_description(&bus, "bus-api-system"); |
718db961 | 830 | else |
56fbd718 | 831 | r = sd_bus_open_user_with_description(&bus, "bus-api-user"); |
dc7118ba MS |
832 | if (r < 0) |
833 | return log_error_errno(r, "Failed to connect to API bus: %m"); | |
cbd37330 | 834 | |
718db961 | 835 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
dc7118ba MS |
836 | if (r < 0) |
837 | return log_error_errno(r, "Failed to attach API bus to event loop: %m"); | |
cbd37330 | 838 | |
718db961 LP |
839 | r = bus_setup_disconnected_match(m, bus); |
840 | if (r < 0) | |
dc7118ba | 841 | return r; |
cbd37330 MS |
842 | } |
843 | ||
718db961 | 844 | r = bus_setup_api(m, bus); |
dc7118ba MS |
845 | if (r < 0) |
846 | return log_error_errno(r, "Failed to set up API bus: %m"); | |
cbd37330 | 847 | |
1cc6c93a | 848 | m->api_bus = TAKE_PTR(bus); |
cbd37330 MS |
849 | |
850 | return 0; | |
cbd37330 MS |
851 | } |
852 | ||
718db961 LP |
853 | static int bus_setup_system(Manager *m, sd_bus *bus) { |
854 | int r; | |
cbd37330 | 855 | |
718db961 LP |
856 | assert(m); |
857 | assert(bus); | |
cbd37330 | 858 | |
d8fdc620 LP |
859 | /* if we are a user instance we get the Released message via the system bus */ |
860 | if (MANAGER_IS_USER(m)) { | |
75152a4d | 861 | r = sd_bus_match_signal_async( |
f5b51ea7 DH |
862 | bus, |
863 | NULL, | |
75152a4d LP |
864 | NULL, |
865 | "/org/freedesktop/systemd1/agent", | |
866 | "org.freedesktop.systemd1.Agent", | |
867 | "Released", | |
868 | signal_agent_released, NULL, m); | |
f5b51ea7 | 869 | if (r < 0) |
75152a4d | 870 | log_warning_errno(r, "Failed to request Released match on system bus: %m"); |
f5b51ea7 | 871 | } |
718db961 LP |
872 | |
873 | log_debug("Successfully connected to system bus."); | |
874 | return 0; | |
cbd37330 MS |
875 | } |
876 | ||
8559b3b7 | 877 | int bus_init_system(Manager *m) { |
b1a4981a | 878 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
cbd37330 MS |
879 | int r; |
880 | ||
881 | if (m->system_bus) | |
882 | return 0; | |
883 | ||
718db961 | 884 | /* The API and system bus is the same if we are running in system mode */ |
931e4754 LP |
885 | if (MANAGER_IS_SYSTEM(m) && m->api_bus) |
886 | bus = sd_bus_ref(m->api_bus); | |
887 | else { | |
56fbd718 | 888 | r = sd_bus_open_system_with_description(&bus, "bus-system"); |
931e4754 LP |
889 | if (r < 0) |
890 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
cbd37330 | 891 | |
931e4754 LP |
892 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); |
893 | if (r < 0) | |
894 | return log_error_errno(r, "Failed to attach system bus to event loop: %m"); | |
cbd37330 | 895 | |
931e4754 LP |
896 | r = bus_setup_disconnected_match(m, bus); |
897 | if (r < 0) | |
898 | return r; | |
899 | } | |
cbd37330 | 900 | |
718db961 | 901 | r = bus_setup_system(m, bus); |
dc7118ba MS |
902 | if (r < 0) |
903 | return log_error_errno(r, "Failed to set up system bus: %m"); | |
cbd37330 | 904 | |
1cc6c93a | 905 | m->system_bus = TAKE_PTR(bus); |
cbd37330 MS |
906 | |
907 | return 0; | |
5e8d1c9a LP |
908 | } |
909 | ||
8559b3b7 | 910 | int bus_init_private(Manager *m) { |
718db961 | 911 | _cleanup_close_ int fd = -1; |
f36a9d59 ZJS |
912 | union sockaddr_union sa; |
913 | socklen_t sa_len; | |
718db961 | 914 | sd_event_source *s; |
f36a9d59 | 915 | int r; |
5e8d1c9a LP |
916 | |
917 | assert(m); | |
918 | ||
718db961 | 919 | if (m->private_listen_fd >= 0) |
5e8d1c9a LP |
920 | return 0; |
921 | ||
463d0d15 | 922 | if (MANAGER_IS_SYSTEM(m)) { |
be81bfc4 LP |
923 | |
924 | /* We want the private bus only when running as init */ | |
df0ff127 | 925 | if (getpid_cached() != 1) |
be81bfc4 LP |
926 | return 0; |
927 | ||
f36a9d59 | 928 | r = sockaddr_un_set_path(&sa.un, "/run/systemd/private"); |
be81bfc4 | 929 | } else { |
15a3e96f | 930 | const char *e, *joined; |
be81bfc4 | 931 | |
4db17f29 | 932 | e = secure_getenv("XDG_RUNTIME_DIR"); |
baaa35ad ZJS |
933 | if (!e) |
934 | return log_error_errno(SYNTHETIC_ERRNO(EHOSTDOWN), | |
935 | "XDG_RUNTIME_DIR is not set, refusing."); | |
be81bfc4 | 936 | |
15a3e96f | 937 | joined = strjoina(e, "/systemd/private"); |
f36a9d59 | 938 | r = sockaddr_un_set_path(&sa.un, joined); |
be81bfc4 | 939 | } |
f36a9d59 ZJS |
940 | if (r < 0) |
941 | return log_error_errno(r, "Can't set path for AF_UNIX socket to bind to: %m"); | |
942 | sa_len = r; | |
5e8d1c9a | 943 | |
f0e62e89 | 944 | (void) mkdir_parents_label(sa.un.sun_path, 0755); |
155b6876 | 945 | (void) sockaddr_un_unlink(&sa.un); |
718db961 LP |
946 | |
947 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
948 | if (fd < 0) |
949 | return log_error_errno(errno, "Failed to allocate private socket: %m"); | |
5e8d1c9a | 950 | |
f36a9d59 | 951 | r = bind(fd, &sa.sa, sa_len); |
4a62c710 MS |
952 | if (r < 0) |
953 | return log_error_errno(errno, "Failed to bind private socket: %m"); | |
5e8d1c9a | 954 | |
718db961 | 955 | r = listen(fd, SOMAXCONN); |
4a62c710 MS |
956 | if (r < 0) |
957 | return log_error_errno(errno, "Failed to make private socket listening: %m"); | |
5e8d1c9a | 958 | |
5b5e6dea LP |
959 | /* Generate an inotify event in case somebody waits for this socket to appear using inotify() */ |
960 | (void) touch(sa.un.sun_path); | |
961 | ||
151b9b96 | 962 | r = sd_event_add_io(m->event, &s, fd, EPOLLIN, bus_on_connection, m); |
23bbb0de MS |
963 | if (r < 0) |
964 | return log_error_errno(r, "Failed to allocate event source: %m"); | |
5e8d1c9a | 965 | |
7dfbe2e3 TG |
966 | (void) sd_event_source_set_description(s, "bus-connection"); |
967 | ||
0b7e8b32 | 968 | m->private_listen_fd = TAKE_FD(fd); |
718db961 | 969 | m->private_listen_event_source = s; |
5e8d1c9a | 970 | |
718db961 | 971 | log_debug("Successfully created private D-Bus server."); |
5e8d1c9a | 972 | |
718db961 | 973 | return 0; |
5e8d1c9a LP |
974 | } |
975 | ||
718db961 | 976 | static void destroy_bus(Manager *m, sd_bus **bus) { |
8367fea5 | 977 | Unit *u; |
718db961 | 978 | Job *j; |
a567261a | 979 | |
718db961 LP |
980 | assert(m); |
981 | assert(bus); | |
5e8d1c9a | 982 | |
718db961 | 983 | if (!*bus) |
cbd37330 | 984 | return; |
f278026d | 985 | |
8367fea5 | 986 | /* Make sure all bus slots watching names are released. */ |
90e74a66 | 987 | HASHMAP_FOREACH(u, m->watch_bus) { |
a5b07847 LP |
988 | if (u->match_bus_slot && sd_bus_slot_get_bus(u->match_bus_slot) == *bus) |
989 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
990 | if (u->get_name_owner_slot && sd_bus_slot_get_bus(u->get_name_owner_slot) == *bus) | |
991 | u->get_name_owner_slot = sd_bus_slot_unref(u->get_name_owner_slot); | |
8367fea5 LP |
992 | } |
993 | ||
718db961 | 994 | /* Get rid of tracked clients on this bus */ |
8f8f05a9 LP |
995 | if (m->subscribed && sd_bus_track_get_bus(m->subscribed) == *bus) |
996 | m->subscribed = sd_bus_track_unref(m->subscribed); | |
997 | ||
90e74a66 | 998 | HASHMAP_FOREACH(j, m->jobs) |
1a465207 LP |
999 | if (j->bus_track && sd_bus_track_get_bus(j->bus_track) == *bus) |
1000 | j->bus_track = sd_bus_track_unref(j->bus_track); | |
c1e1601e | 1001 | |
90e74a66 | 1002 | HASHMAP_FOREACH(u, m->units) { |
dfeff664 LP |
1003 | if (u->bus_track && sd_bus_track_get_bus(u->bus_track) == *bus) |
1004 | u->bus_track = sd_bus_track_unref(u->bus_track); | |
1005 | ||
d9e45bc3 MS |
1006 | /* Get rid of pending freezer messages on this bus */ |
1007 | if (u->pending_freezer_message && sd_bus_message_get_bus(u->pending_freezer_message) == *bus) | |
1008 | u->pending_freezer_message = sd_bus_message_unref(u->pending_freezer_message); | |
1009 | } | |
1010 | ||
718db961 | 1011 | /* Get rid of queued message on this bus */ |
209de525 LP |
1012 | if (m->pending_reload_message && sd_bus_message_get_bus(m->pending_reload_message) == *bus) |
1013 | m->pending_reload_message = sd_bus_message_unref(m->pending_reload_message); | |
f278026d | 1014 | |
718db961 LP |
1015 | /* Possibly flush unwritten data, but only if we are |
1016 | * unprivileged, since we don't want to sync here */ | |
463d0d15 | 1017 | if (!MANAGER_IS_SYSTEM(m)) |
718db961 | 1018 | sd_bus_flush(*bus); |
5e8d1c9a | 1019 | |
718db961 | 1020 | /* And destroy the object */ |
81a40363 | 1021 | *bus = sd_bus_close_unref(*bus); |
5e8d1c9a LP |
1022 | } |
1023 | ||
4502c403 | 1024 | void bus_done_api(Manager *m) { |
9f77ba24 | 1025 | destroy_bus(m, &m->api_bus); |
4502c403 LP |
1026 | } |
1027 | ||
1028 | void bus_done_system(Manager *m) { | |
9f77ba24 | 1029 | destroy_bus(m, &m->system_bus); |
4502c403 LP |
1030 | } |
1031 | ||
1032 | void bus_done_private(Manager *m) { | |
1033 | sd_bus *b; | |
1034 | ||
1035 | assert(m); | |
1036 | ||
718db961 LP |
1037 | while ((b = set_steal_first(m->private_buses))) |
1038 | destroy_bus(m, &b); | |
05e343b7 | 1039 | |
525d3cc7 | 1040 | m->private_buses = set_free(m->private_buses); |
8f8f05a9 | 1041 | |
4502c403 LP |
1042 | m->private_listen_event_source = sd_event_source_unref(m->private_listen_event_source); |
1043 | m->private_listen_fd = safe_close(m->private_listen_fd); | |
1044 | } | |
1045 | ||
1046 | void bus_done(Manager *m) { | |
1047 | assert(m); | |
05e343b7 | 1048 | |
4502c403 LP |
1049 | bus_done_api(m); |
1050 | bus_done_system(m); | |
1051 | bus_done_private(m); | |
05e343b7 | 1052 | |
4502c403 | 1053 | assert(!m->subscribed); |
283868e1 | 1054 | |
4502c403 | 1055 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); |
283868e1 | 1056 | bus_verify_polkit_async_registry_free(m->polkit_registry); |
a567261a | 1057 | } |
b23de6af LP |
1058 | |
1059 | int bus_fdset_add_all(Manager *m, FDSet *fds) { | |
718db961 LP |
1060 | sd_bus *b; |
1061 | int fd; | |
b23de6af LP |
1062 | |
1063 | assert(m); | |
1064 | assert(fds); | |
1065 | ||
1066 | /* When we are about to reexecute we add all D-Bus fds to the | |
1067 | * set to pass over to the newly executed systemd. They won't | |
718db961 | 1068 | * be used there however, except thatt they are closed at the |
b23de6af | 1069 | * very end of deserialization, those making it possible for |
44143309 | 1070 | * clients to synchronously wait for systemd to reexec by |
b23de6af LP |
1071 | * simply waiting for disconnection */ |
1072 | ||
718db961 LP |
1073 | if (m->api_bus) { |
1074 | fd = sd_bus_get_fd(m->api_bus); | |
1075 | if (fd >= 0) { | |
b23de6af | 1076 | fd = fdset_put_dup(fds, fd); |
b23de6af LP |
1077 | if (fd < 0) |
1078 | return fd; | |
1079 | } | |
1080 | } | |
1081 | ||
90e74a66 | 1082 | SET_FOREACH(b, m->private_buses) { |
718db961 LP |
1083 | fd = sd_bus_get_fd(b); |
1084 | if (fd >= 0) { | |
b23de6af | 1085 | fd = fdset_put_dup(fds, fd); |
b23de6af LP |
1086 | if (fd < 0) |
1087 | return fd; | |
1088 | } | |
1089 | } | |
1090 | ||
718db961 LP |
1091 | /* We don't offer any APIs on the system bus (well, unless it |
1092 | * is the same as the API bus) hence we don't bother with it | |
1093 | * here */ | |
6fa48533 | 1094 | |
718db961 | 1095 | return 0; |
6fa48533 LP |
1096 | } |
1097 | ||
8f8f05a9 LP |
1098 | int bus_foreach_bus( |
1099 | Manager *m, | |
1100 | sd_bus_track *subscribed2, | |
1101 | int (*send_message)(sd_bus *bus, void *userdata), | |
1102 | void *userdata) { | |
1103 | ||
8f8f05a9 LP |
1104 | sd_bus *b; |
1105 | int r, ret = 0; | |
1106 | ||
ff9b60f3 | 1107 | /* Send to all direct buses, unconditionally */ |
90e74a66 | 1108 | SET_FOREACH(b, m->private_buses) { |
9fc677e3 | 1109 | |
86b52a39 | 1110 | /* Don't bother with enqueuing these messages to clients that haven't started yet */ |
9fc677e3 LP |
1111 | if (sd_bus_is_ready(b) <= 0) |
1112 | continue; | |
1113 | ||
8f8f05a9 LP |
1114 | r = send_message(b, userdata); |
1115 | if (r < 0) | |
1116 | ret = r; | |
1117 | } | |
1118 | ||
1119 | /* Send to API bus, but only if somebody is subscribed */ | |
6edd281c LP |
1120 | if (m->api_bus && |
1121 | (sd_bus_track_count(m->subscribed) > 0 || | |
1122 | sd_bus_track_count(subscribed2) > 0)) { | |
8f8f05a9 LP |
1123 | r = send_message(m->api_bus, userdata); |
1124 | if (r < 0) | |
1125 | ret = r; | |
1126 | } | |
1127 | ||
1128 | return ret; | |
1129 | } | |
1130 | ||
05a98afd | 1131 | void bus_track_serialize(sd_bus_track *t, FILE *f, const char *prefix) { |
8f8f05a9 LP |
1132 | const char *n; |
1133 | ||
6fa48533 | 1134 | assert(f); |
05a98afd | 1135 | assert(prefix); |
6fa48533 | 1136 | |
05a98afd LP |
1137 | for (n = sd_bus_track_first(t); n; n = sd_bus_track_next(t)) { |
1138 | int c, j; | |
230314d7 | 1139 | |
05a98afd | 1140 | c = sd_bus_track_count_name(t, n); |
d68c645b LP |
1141 | for (j = 0; j < c; j++) |
1142 | (void) serialize_item(f, prefix, n); | |
05a98afd | 1143 | } |
8f8f05a9 LP |
1144 | } |
1145 | ||
05a98afd | 1146 | int bus_track_coldplug(Manager *m, sd_bus_track **t, bool recursive, char **l) { |
c53aafb7 | 1147 | int r; |
8f8f05a9 LP |
1148 | |
1149 | assert(m); | |
1150 | assert(t); | |
8f8f05a9 | 1151 | |
05a98afd LP |
1152 | if (strv_isempty(l)) |
1153 | return 0; | |
8f8f05a9 | 1154 | |
05a98afd LP |
1155 | if (!m->api_bus) |
1156 | return 0; | |
8f8f05a9 | 1157 | |
05a98afd LP |
1158 | if (!*t) { |
1159 | r = sd_bus_track_new(m->api_bus, t, NULL, NULL); | |
1160 | if (r < 0) | |
1161 | return r; | |
8f8f05a9 LP |
1162 | } |
1163 | ||
05a98afd LP |
1164 | r = sd_bus_track_set_recursive(*t, recursive); |
1165 | if (r < 0) | |
1166 | return r; | |
1167 | ||
984794ba | 1168 | return bus_track_add_name_many(*t, l); |
6fa48533 | 1169 | } |
283868e1 | 1170 | |
1d22e906 | 1171 | int bus_verify_manage_units_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { |
403ed0e5 | 1172 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.manage-units", NULL, false, UID_INVALID, &m->polkit_registry, error); |
283868e1 SW |
1173 | } |
1174 | ||
283868e1 | 1175 | int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { |
403ed0e5 | 1176 | 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 |
1177 | } |
1178 | ||
1179 | int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
403ed0e5 | 1180 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.reload-daemon", NULL, false, UID_INVALID, &m->polkit_registry, error); |
283868e1 | 1181 | } |
1d22e906 LP |
1182 | |
1183 | int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
403ed0e5 | 1184 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.set-environment", NULL, false, UID_INVALID, &m->polkit_registry, error); |
1d22e906 | 1185 | } |
e0a08581 LP |
1186 | |
1187 | uint64_t manager_bus_n_queued_write(Manager *m) { | |
1188 | uint64_t c = 0; | |
e0a08581 LP |
1189 | sd_bus *b; |
1190 | int r; | |
1191 | ||
5238e957 | 1192 | /* Returns the total number of messages queued for writing on all our direct and API buses. */ |
e0a08581 | 1193 | |
90e74a66 | 1194 | SET_FOREACH(b, m->private_buses) { |
e0a08581 LP |
1195 | uint64_t k; |
1196 | ||
1197 | r = sd_bus_get_n_queued_write(b, &k); | |
1198 | if (r < 0) | |
1199 | log_debug_errno(r, "Failed to query queued messages for private bus: %m"); | |
1200 | else | |
1201 | c += k; | |
1202 | } | |
1203 | ||
1204 | if (m->api_bus) { | |
1205 | uint64_t k; | |
1206 | ||
1207 | r = sd_bus_get_n_queued_write(m->api_bus, &k); | |
1208 | if (r < 0) | |
1209 | log_debug_errno(r, "Failed to query queued messages for API bus: %m"); | |
1210 | else | |
1211 | c += k; | |
1212 | } | |
1213 | ||
1214 | return c; | |
1215 | } | |
bbc1acab YW |
1216 | |
1217 | static void vtable_dump_bus_properties(FILE *f, const sd_bus_vtable *table) { | |
1218 | const sd_bus_vtable *i; | |
1219 | ||
1220 | for (i = table; i->type != _SD_BUS_VTABLE_END; i++) { | |
1221 | if (!IN_SET(i->type, _SD_BUS_VTABLE_PROPERTY, _SD_BUS_VTABLE_WRITABLE_PROPERTY) || | |
1222 | (i->flags & (SD_BUS_VTABLE_DEPRECATED | SD_BUS_VTABLE_HIDDEN)) != 0) | |
1223 | continue; | |
1224 | ||
1225 | fprintf(f, "%s\n", i->x.property.member); | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | void dump_bus_properties(FILE *f) { | |
1230 | assert(f); | |
1231 | ||
1232 | vtable_dump_bus_properties(f, bus_automount_vtable); | |
1233 | vtable_dump_bus_properties(f, bus_cgroup_vtable); | |
1234 | vtable_dump_bus_properties(f, bus_device_vtable); | |
1235 | vtable_dump_bus_properties(f, bus_exec_vtable); | |
1236 | vtable_dump_bus_properties(f, bus_job_vtable); | |
1237 | vtable_dump_bus_properties(f, bus_kill_vtable); | |
1238 | vtable_dump_bus_properties(f, bus_manager_vtable); | |
1239 | vtable_dump_bus_properties(f, bus_mount_vtable); | |
1240 | vtable_dump_bus_properties(f, bus_path_vtable); | |
1241 | vtable_dump_bus_properties(f, bus_scope_vtable); | |
1242 | vtable_dump_bus_properties(f, bus_service_vtable); | |
1243 | vtable_dump_bus_properties(f, bus_slice_vtable); | |
1244 | vtable_dump_bus_properties(f, bus_socket_vtable); | |
1245 | vtable_dump_bus_properties(f, bus_swap_vtable); | |
1246 | vtable_dump_bus_properties(f, bus_target_vtable); | |
1247 | vtable_dump_bus_properties(f, bus_timer_vtable); | |
1248 | vtable_dump_bus_properties(f, bus_unit_vtable); | |
1249 | vtable_dump_bus_properties(f, bus_unit_cgroup_vtable); | |
1250 | } |