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1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ | |
2 | ||
3 | #include <errno.h> | |
4 | #include <sys/epoll.h> | |
5 | #include <unistd.h> | |
6 | ||
7 | #include "sd-bus.h" | |
8 | ||
9 | #include "alloc-util.h" | |
10 | #include "bus-common-errors.h" | |
11 | #include "bus-error.h" | |
12 | #include "bus-internal.h" | |
13 | #include "bus-polkit.h" | |
14 | #include "bus-util.h" | |
15 | #include "dbus-automount.h" | |
16 | #include "dbus-cgroup.h" | |
17 | #include "dbus-device.h" | |
18 | #include "dbus-execute.h" | |
19 | #include "dbus-job.h" | |
20 | #include "dbus-kill.h" | |
21 | #include "dbus-manager.h" | |
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" | |
31 | #include "dbus-unit.h" | |
32 | #include "dbus.h" | |
33 | #include "fd-util.h" | |
34 | #include "fs-util.h" | |
35 | #include "log.h" | |
36 | #include "mkdir-label.h" | |
37 | #include "process-util.h" | |
38 | #include "selinux-access.h" | |
39 | #include "serialize.h" | |
40 | #include "service.h" | |
41 | #include "special.h" | |
42 | #include "string-util.h" | |
43 | #include "strv.h" | |
44 | #include "strxcpyx.h" | |
45 | #include "umask-util.h" | |
46 | #include "user-util.h" | |
47 | ||
48 | #define CONNECTIONS_MAX 4096 | |
49 | ||
50 | static void destroy_bus(Manager *m, sd_bus **bus); | |
51 | ||
52 | int bus_send_pending_reload_message(Manager *m) { | |
53 | int r; | |
54 | ||
55 | assert(m); | |
56 | ||
57 | if (!m->pending_reload_message) | |
58 | return 0; | |
59 | ||
60 | /* If we cannot get rid of this message we won't dispatch any D-Bus messages, so that we won't end up wanting | |
61 | * to queue another message. */ | |
62 | ||
63 | r = sd_bus_send(NULL, m->pending_reload_message, NULL); | |
64 | if (r < 0) | |
65 | log_warning_errno(r, "Failed to send queued message, ignoring: %m"); | |
66 | ||
67 | m->pending_reload_message = sd_bus_message_unref(m->pending_reload_message); | |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
72 | int bus_forward_agent_released(Manager *m, const char *path) { | |
73 | int r; | |
74 | ||
75 | assert(m); | |
76 | assert(path); | |
77 | ||
78 | if (!MANAGER_IS_SYSTEM(m)) | |
79 | return 0; | |
80 | ||
81 | if (!m->system_bus) | |
82 | return 0; | |
83 | ||
84 | /* If we are running a system instance we forward the agent message on the system bus, so that the user | |
85 | * instances get notified about this, too */ | |
86 | ||
87 | r = sd_bus_emit_signal(m->system_bus, | |
88 | "/org/freedesktop/systemd1/agent", | |
89 | "org.freedesktop.systemd1.Agent", | |
90 | "Released", | |
91 | "s", path); | |
92 | if (r < 0) | |
93 | return log_debug_errno(r, "Failed to propagate agent release message: %m"); | |
94 | ||
95 | return 1; | |
96 | } | |
97 | ||
98 | static int signal_agent_released(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
99 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; | |
100 | Manager *m = ASSERT_PTR(userdata); | |
101 | const char *cgroup; | |
102 | uid_t sender_uid; | |
103 | int r; | |
104 | ||
105 | assert(message); | |
106 | ||
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 */ | |
117 | r = sd_bus_message_read(message, "s", &cgroup); | |
118 | if (r < 0) { | |
119 | bus_log_parse_error(r); | |
120 | return 0; | |
121 | } | |
122 | ||
123 | manager_notify_cgroup_empty(m, cgroup); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | static int signal_disconnected(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
128 | Manager *m = ASSERT_PTR(userdata); | |
129 | sd_bus *bus; | |
130 | ||
131 | assert(message); | |
132 | assert_se(bus = sd_bus_message_get_bus(message)); | |
133 | ||
134 | if (bus == m->api_bus) | |
135 | bus_done_api(m); | |
136 | if (bus == m->system_bus) | |
137 | bus_done_system(m); | |
138 | ||
139 | if (set_remove(m->private_buses, bus)) { | |
140 | log_debug("Got disconnect on private connection."); | |
141 | destroy_bus(m, &bus); | |
142 | } | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static int signal_activation_request(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { | |
148 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
149 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
150 | Manager *m = ASSERT_PTR(userdata); | |
151 | const char *name; | |
152 | Unit *u; | |
153 | int r; | |
154 | ||
155 | assert(message); | |
156 | ||
157 | r = sd_bus_message_read(message, "s", &name); | |
158 | if (r < 0) { | |
159 | bus_log_parse_error(r); | |
160 | return 0; | |
161 | } | |
162 | ||
163 | if (manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SERVICE) || | |
164 | manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SOCKET)) { | |
165 | r = sd_bus_error_set(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is shutting down."); | |
166 | goto failed; | |
167 | } | |
168 | ||
169 | r = manager_load_unit(m, name, NULL, &error, &u); | |
170 | if (r < 0) | |
171 | goto failed; | |
172 | ||
173 | if (u->refuse_manual_start) { | |
174 | 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); | |
175 | goto failed; | |
176 | } | |
177 | ||
178 | r = manager_add_job(m, JOB_START, u, JOB_REPLACE, NULL, &error, NULL); | |
179 | if (r < 0) | |
180 | goto failed; | |
181 | ||
182 | /* Successfully queued, that's it for us */ | |
183 | return 0; | |
184 | ||
185 | failed: | |
186 | if (!sd_bus_error_is_set(&error)) | |
187 | sd_bus_error_set_errno(&error, r); | |
188 | ||
189 | log_debug("D-Bus activation failed for %s: %s", name, bus_error_message(&error, r)); | |
190 | ||
191 | r = sd_bus_message_new_signal(sd_bus_message_get_bus(message), &reply, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Activator", "ActivationFailure"); | |
192 | if (r < 0) { | |
193 | bus_log_create_error(r); | |
194 | return 0; | |
195 | } | |
196 | ||
197 | r = sd_bus_message_append(reply, "sss", name, error.name, error.message); | |
198 | if (r < 0) { | |
199 | bus_log_create_error(r); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | r = sd_bus_send_to(NULL, reply, "org.freedesktop.DBus", NULL); | |
204 | if (r < 0) | |
205 | return log_error_errno(r, "Failed to respond with to bus activation request: %m"); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | #if HAVE_SELINUX | |
211 | static int mac_selinux_filter(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
212 | Manager *m = userdata; | |
213 | const char *verb, *path; | |
214 | Unit *u = NULL; | |
215 | Job *j; | |
216 | int r; | |
217 | ||
218 | assert(message); | |
219 | ||
220 | /* Our own method calls are all protected individually with | |
221 | * selinux checks, but the built-in interfaces need to be | |
222 | * protected too. */ | |
223 | ||
224 | if (sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Properties", "Set")) | |
225 | verb = "reload"; | |
226 | else if (sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", NULL) || | |
227 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Properties", NULL) || | |
228 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.ObjectManager", NULL) || | |
229 | sd_bus_message_is_method_call(message, "org.freedesktop.DBus.Peer", NULL)) | |
230 | verb = "status"; | |
231 | else | |
232 | return 0; | |
233 | ||
234 | path = sd_bus_message_get_path(message); | |
235 | ||
236 | if (object_path_startswith("/org/freedesktop/systemd1", path)) { | |
237 | r = mac_selinux_access_check(message, verb, error); | |
238 | if (r < 0) | |
239 | return r; | |
240 | ||
241 | return 0; | |
242 | } | |
243 | ||
244 | if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) { | |
245 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; | |
246 | pid_t pid; | |
247 | ||
248 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); | |
249 | if (r < 0) | |
250 | return 0; | |
251 | ||
252 | r = sd_bus_creds_get_pid(creds, &pid); | |
253 | if (r < 0) | |
254 | return 0; | |
255 | ||
256 | u = manager_get_unit_by_pid(m, pid); | |
257 | } else { | |
258 | r = manager_get_job_from_dbus_path(m, path, &j); | |
259 | if (r >= 0) | |
260 | u = j->unit; | |
261 | else | |
262 | manager_load_unit_from_dbus_path(m, path, NULL, &u); | |
263 | } | |
264 | if (!u) | |
265 | return 0; | |
266 | ||
267 | r = mac_selinux_unit_access_check(u, message, verb, error); | |
268 | if (r < 0) | |
269 | return r; | |
270 | ||
271 | return 0; | |
272 | } | |
273 | #endif | |
274 | ||
275 | static int find_unit(Manager *m, sd_bus *bus, const char *path, Unit **unit, sd_bus_error *error) { | |
276 | Unit *u = NULL; /* just to appease gcc, initialization is not really necessary */ | |
277 | int r; | |
278 | ||
279 | assert(m); | |
280 | assert(bus); | |
281 | assert(path); | |
282 | ||
283 | if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) { | |
284 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; | |
285 | sd_bus_message *message; | |
286 | pid_t pid; | |
287 | ||
288 | message = sd_bus_get_current_message(bus); | |
289 | if (!message) | |
290 | return 0; | |
291 | ||
292 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); | |
293 | if (r < 0) | |
294 | return r; | |
295 | ||
296 | r = sd_bus_creds_get_pid(creds, &pid); | |
297 | if (r < 0) | |
298 | return r; | |
299 | ||
300 | u = manager_get_unit_by_pid(m, pid); | |
301 | if (!u) | |
302 | return 0; | |
303 | } else { | |
304 | r = manager_load_unit_from_dbus_path(m, path, error, &u); | |
305 | if (r < 0) | |
306 | return 0; | |
307 | assert(u); | |
308 | } | |
309 | ||
310 | *unit = u; | |
311 | return 1; | |
312 | } | |
313 | ||
314 | static int bus_unit_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
315 | Manager *m = ASSERT_PTR(userdata); | |
316 | ||
317 | assert(bus); | |
318 | assert(path); | |
319 | assert(interface); | |
320 | assert(found); | |
321 | ||
322 | return find_unit(m, bus, path, (Unit**) found, error); | |
323 | } | |
324 | ||
325 | static int bus_unit_interface_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
326 | Manager *m = ASSERT_PTR(userdata); | |
327 | Unit *u; | |
328 | int r; | |
329 | ||
330 | assert(bus); | |
331 | assert(path); | |
332 | assert(interface); | |
333 | assert(found); | |
334 | ||
335 | r = find_unit(m, bus, path, &u, error); | |
336 | if (r <= 0) | |
337 | return r; | |
338 | ||
339 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) | |
340 | return 0; | |
341 | ||
342 | *found = u; | |
343 | return 1; | |
344 | } | |
345 | ||
346 | static int bus_unit_cgroup_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
347 | Manager *m = ASSERT_PTR(userdata); | |
348 | Unit *u; | |
349 | int r; | |
350 | ||
351 | assert(bus); | |
352 | assert(path); | |
353 | assert(interface); | |
354 | assert(found); | |
355 | ||
356 | r = find_unit(m, bus, path, &u, error); | |
357 | if (r <= 0) | |
358 | return r; | |
359 | ||
360 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) | |
361 | return 0; | |
362 | ||
363 | if (!UNIT_HAS_CGROUP_CONTEXT(u)) | |
364 | return 0; | |
365 | ||
366 | *found = u; | |
367 | return 1; | |
368 | } | |
369 | ||
370 | static int bus_cgroup_context_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
371 | Manager *m = ASSERT_PTR(userdata); | |
372 | CGroupContext *c; | |
373 | Unit *u; | |
374 | int r; | |
375 | ||
376 | assert(bus); | |
377 | assert(path); | |
378 | assert(interface); | |
379 | assert(found); | |
380 | ||
381 | r = find_unit(m, bus, path, &u, error); | |
382 | if (r <= 0) | |
383 | return r; | |
384 | ||
385 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) | |
386 | return 0; | |
387 | ||
388 | c = unit_get_cgroup_context(u); | |
389 | if (!c) | |
390 | return 0; | |
391 | ||
392 | *found = c; | |
393 | return 1; | |
394 | } | |
395 | ||
396 | static int bus_exec_context_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
397 | Manager *m = ASSERT_PTR(userdata); | |
398 | ExecContext *c; | |
399 | Unit *u; | |
400 | int r; | |
401 | ||
402 | assert(bus); | |
403 | assert(path); | |
404 | assert(interface); | |
405 | assert(found); | |
406 | ||
407 | r = find_unit(m, bus, path, &u, error); | |
408 | if (r <= 0) | |
409 | return r; | |
410 | ||
411 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) | |
412 | return 0; | |
413 | ||
414 | c = unit_get_exec_context(u); | |
415 | if (!c) | |
416 | return 0; | |
417 | ||
418 | *found = c; | |
419 | return 1; | |
420 | } | |
421 | ||
422 | static int bus_kill_context_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
423 | Manager *m = ASSERT_PTR(userdata); | |
424 | KillContext *c; | |
425 | Unit *u; | |
426 | int r; | |
427 | ||
428 | assert(bus); | |
429 | assert(path); | |
430 | assert(interface); | |
431 | assert(found); | |
432 | ||
433 | r = find_unit(m, bus, path, &u, error); | |
434 | if (r <= 0) | |
435 | return r; | |
436 | ||
437 | if (!streq_ptr(interface, unit_dbus_interface_from_type(u->type))) | |
438 | return 0; | |
439 | ||
440 | c = unit_get_kill_context(u); | |
441 | if (!c) | |
442 | return 0; | |
443 | ||
444 | *found = c; | |
445 | return 1; | |
446 | } | |
447 | ||
448 | static int bus_unit_enumerate(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { | |
449 | _cleanup_strv_free_ char **l = NULL; | |
450 | Manager *m = userdata; | |
451 | unsigned k = 0; | |
452 | Unit *u; | |
453 | ||
454 | l = new0(char*, hashmap_size(m->units)+1); | |
455 | if (!l) | |
456 | return -ENOMEM; | |
457 | ||
458 | HASHMAP_FOREACH(u, m->units) { | |
459 | l[k] = unit_dbus_path(u); | |
460 | if (!l[k]) | |
461 | return -ENOMEM; | |
462 | ||
463 | k++; | |
464 | } | |
465 | ||
466 | *nodes = TAKE_PTR(l); | |
467 | ||
468 | return k; | |
469 | } | |
470 | ||
471 | static const BusObjectImplementation unit_object = { | |
472 | "/org/freedesktop/systemd1/unit", | |
473 | "org.freedesktop.systemd1.Unit", | |
474 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
475 | { bus_unit_vtable, bus_unit_find }), | |
476 | .node_enumerator = bus_unit_enumerate, | |
477 | }; | |
478 | ||
479 | static const BusObjectImplementation bus_automount_object = { | |
480 | "/org/freedesktop/systemd1/unit", | |
481 | "org.freedesktop.systemd1.Automount", | |
482 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
483 | { bus_automount_vtable, bus_unit_interface_find }), | |
484 | }; | |
485 | ||
486 | static const BusObjectImplementation bus_device_object = { | |
487 | "/org/freedesktop/systemd1/unit", | |
488 | "org.freedesktop.systemd1.Device", | |
489 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
490 | { bus_device_vtable, bus_unit_interface_find }), | |
491 | }; | |
492 | ||
493 | static const BusObjectImplementation bus_mount_object = { | |
494 | "/org/freedesktop/systemd1/unit", | |
495 | "org.freedesktop.systemd1.Mount", | |
496 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
497 | { bus_mount_vtable, bus_unit_interface_find }, | |
498 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
499 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
500 | { bus_exec_vtable, bus_exec_context_find }, | |
501 | { bus_kill_vtable, bus_kill_context_find }), | |
502 | }; | |
503 | ||
504 | static const BusObjectImplementation bus_path_object = { | |
505 | "/org/freedesktop/systemd1/unit", | |
506 | "org.freedesktop.systemd1.Path", | |
507 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
508 | { bus_path_vtable, bus_unit_interface_find }), | |
509 | }; | |
510 | ||
511 | static const BusObjectImplementation bus_scope_object = { | |
512 | "/org/freedesktop/systemd1/unit", | |
513 | "org.freedesktop.systemd1.Scope", | |
514 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
515 | { bus_scope_vtable, bus_unit_interface_find }, | |
516 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
517 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
518 | { bus_kill_vtable, bus_kill_context_find }), | |
519 | }; | |
520 | ||
521 | static const BusObjectImplementation bus_service_object = { | |
522 | "/org/freedesktop/systemd1/unit", | |
523 | "org.freedesktop.systemd1.Service", | |
524 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
525 | { bus_service_vtable, bus_unit_interface_find }, | |
526 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
527 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
528 | { bus_exec_vtable, bus_exec_context_find }, | |
529 | { bus_kill_vtable, bus_kill_context_find }), | |
530 | }; | |
531 | ||
532 | static const BusObjectImplementation bus_slice_object = { | |
533 | "/org/freedesktop/systemd1/unit", | |
534 | "org.freedesktop.systemd1.Slice", | |
535 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
536 | { bus_slice_vtable, bus_unit_interface_find }, | |
537 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
538 | { bus_cgroup_vtable, bus_cgroup_context_find }), | |
539 | }; | |
540 | ||
541 | static const BusObjectImplementation bus_socket_object = { | |
542 | "/org/freedesktop/systemd1/unit", | |
543 | "org.freedesktop.systemd1.Socket", | |
544 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
545 | { bus_socket_vtable, bus_unit_interface_find }, | |
546 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
547 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
548 | { bus_exec_vtable, bus_exec_context_find }, | |
549 | { bus_kill_vtable, bus_kill_context_find }), | |
550 | }; | |
551 | ||
552 | static const BusObjectImplementation bus_swap_object = { | |
553 | "/org/freedesktop/systemd1/unit", | |
554 | "org.freedesktop.systemd1.Swap", | |
555 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
556 | { bus_swap_vtable, bus_unit_interface_find }, | |
557 | { bus_unit_cgroup_vtable, bus_unit_cgroup_find }, | |
558 | { bus_cgroup_vtable, bus_cgroup_context_find }, | |
559 | { bus_exec_vtable, bus_exec_context_find }, | |
560 | { bus_kill_vtable, bus_kill_context_find }), | |
561 | }; | |
562 | ||
563 | static const BusObjectImplementation bus_target_object = { | |
564 | "/org/freedesktop/systemd1/unit", | |
565 | "org.freedesktop.systemd1.Target", | |
566 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
567 | { bus_target_vtable, bus_unit_interface_find }), | |
568 | }; | |
569 | ||
570 | static const BusObjectImplementation bus_timer_object = { | |
571 | "/org/freedesktop/systemd1/unit", | |
572 | "org.freedesktop.systemd1.Timer", | |
573 | .fallback_vtables = BUS_FALLBACK_VTABLES( | |
574 | { bus_timer_vtable, bus_unit_interface_find }), | |
575 | }; | |
576 | ||
577 | static const BusObjectImplementation bus_manager_object = { | |
578 | "/org/freedesktop/systemd1", | |
579 | "org.freedesktop.systemd1.Manager", | |
580 | .vtables = BUS_VTABLES(bus_manager_vtable), | |
581 | .children = BUS_IMPLEMENTATIONS( | |
582 | &job_object, | |
583 | &unit_object, | |
584 | &bus_automount_object, | |
585 | &bus_device_object, | |
586 | &bus_mount_object, | |
587 | &bus_path_object, | |
588 | &bus_scope_object, | |
589 | &bus_service_object, | |
590 | &bus_slice_object, | |
591 | &bus_socket_object, | |
592 | &bus_swap_object, | |
593 | &bus_target_object, | |
594 | &bus_timer_object), | |
595 | }; | |
596 | ||
597 | static const BusObjectImplementation manager_log_control_object = { | |
598 | "/org/freedesktop/LogControl1", | |
599 | "org.freedesktop.LogControl1", | |
600 | .vtables = BUS_VTABLES(bus_manager_log_control_vtable), | |
601 | }; | |
602 | ||
603 | int bus_manager_introspect_implementations(FILE *out, const char *pattern) { | |
604 | return bus_introspect_implementations( | |
605 | out, | |
606 | pattern, | |
607 | BUS_IMPLEMENTATIONS(&bus_manager_object, | |
608 | &manager_log_control_object)); | |
609 | } | |
610 | ||
611 | static int bus_setup_api_vtables(Manager *m, sd_bus *bus) { | |
612 | int r; | |
613 | ||
614 | assert(m); | |
615 | assert(bus); | |
616 | ||
617 | #if HAVE_SELINUX | |
618 | r = sd_bus_add_filter(bus, NULL, mac_selinux_filter, m); | |
619 | if (r < 0) | |
620 | return log_error_errno(r, "Failed to add SELinux access filter: %m"); | |
621 | #endif | |
622 | ||
623 | r = bus_add_implementation(bus, &bus_manager_object, m); | |
624 | if (r < 0) | |
625 | return r; | |
626 | ||
627 | return bus_add_implementation(bus, &manager_log_control_object, m); | |
628 | } | |
629 | ||
630 | static int bus_setup_disconnected_match(Manager *m, sd_bus *bus) { | |
631 | int r; | |
632 | ||
633 | assert(m); | |
634 | assert(bus); | |
635 | ||
636 | r = sd_bus_match_signal_async( | |
637 | bus, | |
638 | NULL, | |
639 | "org.freedesktop.DBus.Local", | |
640 | "/org/freedesktop/DBus/Local", | |
641 | "org.freedesktop.DBus.Local", | |
642 | "Disconnected", | |
643 | signal_disconnected, NULL, m); | |
644 | if (r < 0) | |
645 | return log_error_errno(r, "Failed to request match for Disconnected message: %m"); | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
650 | static int bus_on_connection(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
651 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; | |
652 | _cleanup_close_ int nfd = -EBADF; | |
653 | Manager *m = ASSERT_PTR(userdata); | |
654 | sd_id128_t id; | |
655 | int r; | |
656 | ||
657 | assert(s); | |
658 | ||
659 | nfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC); | |
660 | if (nfd < 0) { | |
661 | if (ERRNO_IS_ACCEPT_AGAIN(errno)) | |
662 | return 0; | |
663 | ||
664 | log_warning_errno(errno, "Failed to accept private connection, ignoring: %m"); | |
665 | return 0; | |
666 | } | |
667 | ||
668 | if (set_size(m->private_buses) >= CONNECTIONS_MAX) { | |
669 | log_warning("Too many concurrent connections, refusing"); | |
670 | return 0; | |
671 | } | |
672 | ||
673 | r = sd_bus_new(&bus); | |
674 | if (r < 0) { | |
675 | log_warning_errno(r, "Failed to allocate new private connection bus: %m"); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | (void) sd_bus_set_description(bus, "private-bus-connection"); | |
680 | ||
681 | r = sd_bus_set_fd(bus, nfd, nfd); | |
682 | if (r < 0) { | |
683 | log_warning_errno(r, "Failed to set fd on new connection bus: %m"); | |
684 | return 0; | |
685 | } | |
686 | ||
687 | nfd = -EBADF; | |
688 | ||
689 | r = bus_check_peercred(bus); | |
690 | if (r < 0) { | |
691 | log_warning_errno(r, "Incoming private connection from unprivileged client, refusing: %m"); | |
692 | return 0; | |
693 | } | |
694 | ||
695 | assert_se(sd_id128_randomize(&id) >= 0); | |
696 | ||
697 | r = sd_bus_set_server(bus, 1, id); | |
698 | if (r < 0) { | |
699 | log_warning_errno(r, "Failed to enable server support for new connection bus: %m"); | |
700 | return 0; | |
701 | } | |
702 | ||
703 | r = sd_bus_negotiate_creds(bus, 1, | |
704 | SD_BUS_CREDS_PID|SD_BUS_CREDS_UID| | |
705 | SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS| | |
706 | SD_BUS_CREDS_SELINUX_CONTEXT); | |
707 | if (r < 0) { | |
708 | log_warning_errno(r, "Failed to enable credentials for new connection: %m"); | |
709 | return 0; | |
710 | } | |
711 | ||
712 | r = sd_bus_set_sender(bus, "org.freedesktop.systemd1"); | |
713 | if (r < 0) { | |
714 | log_warning_errno(r, "Failed to set direct connection sender: %m"); | |
715 | return 0; | |
716 | } | |
717 | ||
718 | r = sd_bus_start(bus); | |
719 | if (r < 0) { | |
720 | log_warning_errno(r, "Failed to start new connection bus: %m"); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); | |
725 | if (r < 0) { | |
726 | log_warning_errno(r, "Failed to attach new connection bus to event loop: %m"); | |
727 | return 0; | |
728 | } | |
729 | ||
730 | r = bus_setup_disconnected_match(m, bus); | |
731 | if (r < 0) | |
732 | return 0; | |
733 | ||
734 | r = bus_setup_api_vtables(m, bus); | |
735 | if (r < 0) { | |
736 | log_warning_errno(r, "Failed to set up API vtables on new connection bus: %m"); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | r = set_ensure_put(&m->private_buses, NULL, bus); | |
741 | if (r == -ENOMEM) { | |
742 | log_oom(); | |
743 | return 0; | |
744 | } | |
745 | if (r < 0) { | |
746 | log_warning_errno(r, "Failed to add new connection bus to set: %m"); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | TAKE_PTR(bus); | |
751 | ||
752 | log_debug("Accepted new private connection."); | |
753 | ||
754 | return 0; | |
755 | } | |
756 | ||
757 | static int bus_setup_api(Manager *m, sd_bus *bus) { | |
758 | char *name; | |
759 | Unit *u; | |
760 | int r; | |
761 | ||
762 | assert(m); | |
763 | assert(bus); | |
764 | ||
765 | /* Let's make sure we have enough credential bits so that we can make security and selinux decisions */ | |
766 | r = sd_bus_negotiate_creds(bus, 1, | |
767 | SD_BUS_CREDS_PID|SD_BUS_CREDS_UID| | |
768 | SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS| | |
769 | SD_BUS_CREDS_SELINUX_CONTEXT); | |
770 | if (r < 0) | |
771 | log_warning_errno(r, "Failed to enable credential passing, ignoring: %m"); | |
772 | ||
773 | r = bus_setup_api_vtables(m, bus); | |
774 | if (r < 0) | |
775 | return r; | |
776 | ||
777 | HASHMAP_FOREACH_KEY(u, name, m->watch_bus) { | |
778 | r = unit_install_bus_match(u, bus, name); | |
779 | if (r < 0) | |
780 | log_error_errno(r, "Failed to subscribe to NameOwnerChanged signal for '%s': %m", name); | |
781 | } | |
782 | ||
783 | r = sd_bus_match_signal_async( | |
784 | bus, | |
785 | NULL, | |
786 | "org.freedesktop.DBus", | |
787 | "/org/freedesktop/DBus", | |
788 | "org.freedesktop.systemd1.Activator", | |
789 | "ActivationRequest", | |
790 | signal_activation_request, NULL, m); | |
791 | if (r < 0) | |
792 | log_warning_errno(r, "Failed to subscribe to activation signal: %m"); | |
793 | ||
794 | /* Allow replacing of our name, to ease implementation of reexecution, where we keep the old connection open | |
795 | * until after the new connection is set up and the name installed to allow clients to synchronously wait for | |
796 | * reexecution to finish */ | |
797 | r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.systemd1", SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_ALLOW_REPLACEMENT, NULL, NULL); | |
798 | if (r < 0) | |
799 | return log_error_errno(r, "Failed to request name: %m"); | |
800 | ||
801 | log_debug("Successfully connected to API bus."); | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
806 | int bus_init_api(Manager *m) { | |
807 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; | |
808 | int r; | |
809 | ||
810 | if (m->api_bus) | |
811 | return 0; | |
812 | ||
813 | /* The API and system bus is the same if we are running in system mode */ | |
814 | if (MANAGER_IS_SYSTEM(m) && m->system_bus) | |
815 | bus = sd_bus_ref(m->system_bus); | |
816 | else { | |
817 | if (MANAGER_IS_SYSTEM(m)) | |
818 | r = sd_bus_open_system_with_description(&bus, "bus-api-system"); | |
819 | else | |
820 | r = sd_bus_open_user_with_description(&bus, "bus-api-user"); | |
821 | if (r < 0) | |
822 | return log_error_errno(r, "Failed to connect to API bus: %m"); | |
823 | ||
824 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); | |
825 | if (r < 0) | |
826 | return log_error_errno(r, "Failed to attach API bus to event loop: %m"); | |
827 | ||
828 | r = bus_setup_disconnected_match(m, bus); | |
829 | if (r < 0) | |
830 | return r; | |
831 | } | |
832 | ||
833 | r = bus_setup_api(m, bus); | |
834 | if (r < 0) | |
835 | return log_error_errno(r, "Failed to set up API bus: %m"); | |
836 | ||
837 | m->api_bus = TAKE_PTR(bus); | |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
842 | static int bus_setup_system(Manager *m, sd_bus *bus) { | |
843 | int r; | |
844 | ||
845 | assert(m); | |
846 | assert(bus); | |
847 | ||
848 | /* if we are a user instance we get the Released message via the system bus */ | |
849 | if (MANAGER_IS_USER(m)) { | |
850 | r = sd_bus_match_signal_async( | |
851 | bus, | |
852 | NULL, | |
853 | NULL, | |
854 | "/org/freedesktop/systemd1/agent", | |
855 | "org.freedesktop.systemd1.Agent", | |
856 | "Released", | |
857 | signal_agent_released, NULL, m); | |
858 | if (r < 0) | |
859 | log_warning_errno(r, "Failed to request Released match on system bus: %m"); | |
860 | } | |
861 | ||
862 | log_debug("Successfully connected to system bus."); | |
863 | return 0; | |
864 | } | |
865 | ||
866 | int bus_init_system(Manager *m) { | |
867 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; | |
868 | int r; | |
869 | ||
870 | if (m->system_bus) | |
871 | return 0; | |
872 | ||
873 | /* The API and system bus is the same if we are running in system mode */ | |
874 | if (MANAGER_IS_SYSTEM(m) && m->api_bus) | |
875 | bus = sd_bus_ref(m->api_bus); | |
876 | else { | |
877 | r = sd_bus_open_system_with_description(&bus, "bus-system"); | |
878 | if (r < 0) | |
879 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
880 | ||
881 | r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL); | |
882 | if (r < 0) | |
883 | return log_error_errno(r, "Failed to attach system bus to event loop: %m"); | |
884 | ||
885 | r = bus_setup_disconnected_match(m, bus); | |
886 | if (r < 0) | |
887 | return r; | |
888 | } | |
889 | ||
890 | r = bus_setup_system(m, bus); | |
891 | if (r < 0) | |
892 | return log_error_errno(r, "Failed to set up system bus: %m"); | |
893 | ||
894 | m->system_bus = TAKE_PTR(bus); | |
895 | ||
896 | return 0; | |
897 | } | |
898 | ||
899 | int bus_init_private(Manager *m) { | |
900 | _cleanup_close_ int fd = -EBADF; | |
901 | union sockaddr_union sa; | |
902 | socklen_t sa_len; | |
903 | sd_event_source *s; | |
904 | int r; | |
905 | ||
906 | assert(m); | |
907 | ||
908 | if (m->private_listen_fd >= 0) | |
909 | return 0; | |
910 | ||
911 | if (MANAGER_IS_SYSTEM(m)) { | |
912 | ||
913 | /* We want the private bus only when running as init */ | |
914 | if (getpid_cached() != 1) | |
915 | return 0; | |
916 | ||
917 | r = sockaddr_un_set_path(&sa.un, "/run/systemd/private"); | |
918 | } else { | |
919 | _cleanup_free_ char *joined = NULL; | |
920 | const char *e; | |
921 | ||
922 | e = secure_getenv("XDG_RUNTIME_DIR"); | |
923 | if (!e) | |
924 | return log_error_errno(SYNTHETIC_ERRNO(EHOSTDOWN), | |
925 | "XDG_RUNTIME_DIR is not set, refusing."); | |
926 | ||
927 | joined = path_join(e, "/systemd/private"); | |
928 | if (!joined) | |
929 | return log_oom(); | |
930 | ||
931 | r = sockaddr_un_set_path(&sa.un, joined); | |
932 | } | |
933 | if (r < 0) | |
934 | return log_error_errno(r, "Can't set path for AF_UNIX socket to bind to: %m"); | |
935 | sa_len = r; | |
936 | ||
937 | (void) mkdir_parents_label(sa.un.sun_path, 0755); | |
938 | (void) sockaddr_un_unlink(&sa.un); | |
939 | ||
940 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
941 | if (fd < 0) | |
942 | return log_error_errno(errno, "Failed to allocate private socket: %m"); | |
943 | ||
944 | WITH_UMASK(0077) | |
945 | r = bind(fd, &sa.sa, sa_len); | |
946 | if (r < 0) | |
947 | return log_error_errno(errno, "Failed to bind private socket: %m"); | |
948 | ||
949 | r = listen(fd, SOMAXCONN); | |
950 | if (r < 0) | |
951 | return log_error_errno(errno, "Failed to make private socket listening: %m"); | |
952 | ||
953 | /* Generate an inotify event in case somebody waits for this socket to appear using inotify() */ | |
954 | (void) touch(sa.un.sun_path); | |
955 | ||
956 | r = sd_event_add_io(m->event, &s, fd, EPOLLIN, bus_on_connection, m); | |
957 | if (r < 0) | |
958 | return log_error_errno(r, "Failed to allocate event source: %m"); | |
959 | ||
960 | (void) sd_event_source_set_description(s, "bus-connection"); | |
961 | ||
962 | m->private_listen_fd = TAKE_FD(fd); | |
963 | m->private_listen_event_source = s; | |
964 | ||
965 | log_debug("Successfully created private D-Bus server."); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | static void destroy_bus(Manager *m, sd_bus **bus) { | |
971 | Unit *u; | |
972 | Job *j; | |
973 | ||
974 | assert(m); | |
975 | assert(bus); | |
976 | ||
977 | if (!*bus) | |
978 | return; | |
979 | ||
980 | /* Make sure all bus slots watching names are released. */ | |
981 | HASHMAP_FOREACH(u, m->watch_bus) { | |
982 | if (u->match_bus_slot && sd_bus_slot_get_bus(u->match_bus_slot) == *bus) | |
983 | u->match_bus_slot = sd_bus_slot_unref(u->match_bus_slot); | |
984 | if (u->get_name_owner_slot && sd_bus_slot_get_bus(u->get_name_owner_slot) == *bus) | |
985 | u->get_name_owner_slot = sd_bus_slot_unref(u->get_name_owner_slot); | |
986 | } | |
987 | ||
988 | /* Get rid of tracked clients on this bus */ | |
989 | if (m->subscribed && sd_bus_track_get_bus(m->subscribed) == *bus) | |
990 | m->subscribed = sd_bus_track_unref(m->subscribed); | |
991 | ||
992 | HASHMAP_FOREACH(j, m->jobs) | |
993 | if (j->bus_track && sd_bus_track_get_bus(j->bus_track) == *bus) | |
994 | j->bus_track = sd_bus_track_unref(j->bus_track); | |
995 | ||
996 | HASHMAP_FOREACH(u, m->units) { | |
997 | if (u->bus_track && sd_bus_track_get_bus(u->bus_track) == *bus) | |
998 | u->bus_track = sd_bus_track_unref(u->bus_track); | |
999 | ||
1000 | /* Get rid of pending freezer messages on this bus */ | |
1001 | if (u->pending_freezer_invocation && sd_bus_message_get_bus(u->pending_freezer_invocation) == *bus) | |
1002 | u->pending_freezer_invocation = sd_bus_message_unref(u->pending_freezer_invocation); | |
1003 | } | |
1004 | ||
1005 | /* Get rid of queued message on this bus */ | |
1006 | if (m->pending_reload_message && sd_bus_message_get_bus(m->pending_reload_message) == *bus) | |
1007 | m->pending_reload_message = sd_bus_message_unref(m->pending_reload_message); | |
1008 | ||
1009 | /* Possibly flush unwritten data, but only if we are | |
1010 | * unprivileged, since we don't want to sync here */ | |
1011 | if (!MANAGER_IS_SYSTEM(m)) | |
1012 | sd_bus_flush(*bus); | |
1013 | ||
1014 | /* And destroy the object */ | |
1015 | *bus = sd_bus_close_unref(*bus); | |
1016 | } | |
1017 | ||
1018 | void bus_done_api(Manager *m) { | |
1019 | destroy_bus(m, &m->api_bus); | |
1020 | } | |
1021 | ||
1022 | void bus_done_system(Manager *m) { | |
1023 | destroy_bus(m, &m->system_bus); | |
1024 | } | |
1025 | ||
1026 | void bus_done_private(Manager *m) { | |
1027 | sd_bus *b; | |
1028 | ||
1029 | assert(m); | |
1030 | ||
1031 | while ((b = set_steal_first(m->private_buses))) | |
1032 | destroy_bus(m, &b); | |
1033 | ||
1034 | m->private_buses = set_free(m->private_buses); | |
1035 | ||
1036 | m->private_listen_event_source = sd_event_source_disable_unref(m->private_listen_event_source); | |
1037 | m->private_listen_fd = safe_close(m->private_listen_fd); | |
1038 | } | |
1039 | ||
1040 | void bus_done(Manager *m) { | |
1041 | assert(m); | |
1042 | ||
1043 | bus_done_api(m); | |
1044 | bus_done_system(m); | |
1045 | bus_done_private(m); | |
1046 | ||
1047 | assert(!m->subscribed); | |
1048 | ||
1049 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
1050 | bus_verify_polkit_async_registry_free(m->polkit_registry); | |
1051 | } | |
1052 | ||
1053 | int bus_fdset_add_all(Manager *m, FDSet *fds) { | |
1054 | sd_bus *b; | |
1055 | int fd; | |
1056 | ||
1057 | assert(m); | |
1058 | assert(fds); | |
1059 | ||
1060 | /* When we are about to reexecute we add all D-Bus fds to the | |
1061 | * set to pass over to the newly executed systemd. They won't | |
1062 | * be used there however, except thatt they are closed at the | |
1063 | * very end of deserialization, those making it possible for | |
1064 | * clients to synchronously wait for systemd to reexec by | |
1065 | * simply waiting for disconnection */ | |
1066 | ||
1067 | if (m->api_bus) { | |
1068 | fd = sd_bus_get_fd(m->api_bus); | |
1069 | if (fd >= 0) { | |
1070 | fd = fdset_put_dup(fds, fd); | |
1071 | if (fd < 0) | |
1072 | return fd; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | SET_FOREACH(b, m->private_buses) { | |
1077 | fd = sd_bus_get_fd(b); | |
1078 | if (fd >= 0) { | |
1079 | fd = fdset_put_dup(fds, fd); | |
1080 | if (fd < 0) | |
1081 | return fd; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | /* We don't offer any APIs on the system bus (well, unless it | |
1086 | * is the same as the API bus) hence we don't bother with it | |
1087 | * here */ | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | int bus_foreach_bus( | |
1093 | Manager *m, | |
1094 | sd_bus_track *subscribed2, | |
1095 | int (*send_message)(sd_bus *bus, void *userdata), | |
1096 | void *userdata) { | |
1097 | ||
1098 | sd_bus *b; | |
1099 | int r, ret = 0; | |
1100 | ||
1101 | /* Send to all direct buses, unconditionally */ | |
1102 | SET_FOREACH(b, m->private_buses) { | |
1103 | ||
1104 | /* Don't bother with enqueuing these messages to clients that haven't started yet */ | |
1105 | if (sd_bus_is_ready(b) <= 0) | |
1106 | continue; | |
1107 | ||
1108 | r = send_message(b, userdata); | |
1109 | if (r < 0) | |
1110 | ret = r; | |
1111 | } | |
1112 | ||
1113 | /* Send to API bus, but only if somebody is subscribed */ | |
1114 | if (m->api_bus && | |
1115 | (sd_bus_track_count(m->subscribed) > 0 || | |
1116 | sd_bus_track_count(subscribed2) > 0)) { | |
1117 | r = send_message(m->api_bus, userdata); | |
1118 | if (r < 0) | |
1119 | ret = r; | |
1120 | } | |
1121 | ||
1122 | return ret; | |
1123 | } | |
1124 | ||
1125 | void bus_track_serialize(sd_bus_track *t, FILE *f, const char *prefix) { | |
1126 | const char *n; | |
1127 | ||
1128 | assert(f); | |
1129 | assert(prefix); | |
1130 | ||
1131 | for (n = sd_bus_track_first(t); n; n = sd_bus_track_next(t)) { | |
1132 | int c, j; | |
1133 | ||
1134 | c = sd_bus_track_count_name(t, n); | |
1135 | for (j = 0; j < c; j++) | |
1136 | (void) serialize_item(f, prefix, n); | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | int bus_track_coldplug(Manager *m, sd_bus_track **t, bool recursive, char **l) { | |
1141 | int r; | |
1142 | ||
1143 | assert(m); | |
1144 | assert(t); | |
1145 | ||
1146 | if (strv_isempty(l)) | |
1147 | return 0; | |
1148 | ||
1149 | if (!m->api_bus) | |
1150 | return 0; | |
1151 | ||
1152 | if (!*t) { | |
1153 | r = sd_bus_track_new(m->api_bus, t, NULL, NULL); | |
1154 | if (r < 0) | |
1155 | return r; | |
1156 | } | |
1157 | ||
1158 | r = sd_bus_track_set_recursive(*t, recursive); | |
1159 | if (r < 0) | |
1160 | return r; | |
1161 | ||
1162 | return bus_track_add_name_many(*t, l); | |
1163 | } | |
1164 | ||
1165 | int bus_verify_manage_units_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
1166 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.manage-units", NULL, false, UID_INVALID, &m->polkit_registry, error); | |
1167 | } | |
1168 | ||
1169 | int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
1170 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.manage-unit-files", NULL, false, UID_INVALID, &m->polkit_registry, error); | |
1171 | } | |
1172 | ||
1173 | int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
1174 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.reload-daemon", NULL, false, UID_INVALID, &m->polkit_registry, error); | |
1175 | } | |
1176 | ||
1177 | int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error) { | |
1178 | return bus_verify_polkit_async(call, CAP_SYS_ADMIN, "org.freedesktop.systemd1.set-environment", NULL, false, UID_INVALID, &m->polkit_registry, error); | |
1179 | } | |
1180 | ||
1181 | uint64_t manager_bus_n_queued_write(Manager *m) { | |
1182 | uint64_t c = 0; | |
1183 | sd_bus *b; | |
1184 | int r; | |
1185 | ||
1186 | /* Returns the total number of messages queued for writing on all our direct and API buses. */ | |
1187 | ||
1188 | SET_FOREACH(b, m->private_buses) { | |
1189 | uint64_t k; | |
1190 | ||
1191 | r = sd_bus_get_n_queued_write(b, &k); | |
1192 | if (r < 0) | |
1193 | log_debug_errno(r, "Failed to query queued messages for private bus: %m"); | |
1194 | else | |
1195 | c += k; | |
1196 | } | |
1197 | ||
1198 | if (m->api_bus) { | |
1199 | uint64_t k; | |
1200 | ||
1201 | r = sd_bus_get_n_queued_write(m->api_bus, &k); | |
1202 | if (r < 0) | |
1203 | log_debug_errno(r, "Failed to query queued messages for API bus: %m"); | |
1204 | else | |
1205 | c += k; | |
1206 | } | |
1207 | ||
1208 | return c; | |
1209 | } | |
1210 | ||
1211 | static void vtable_dump_bus_properties(FILE *f, const sd_bus_vtable *table) { | |
1212 | const sd_bus_vtable *i; | |
1213 | ||
1214 | for (i = table; i->type != _SD_BUS_VTABLE_END; i++) { | |
1215 | if (!IN_SET(i->type, _SD_BUS_VTABLE_PROPERTY, _SD_BUS_VTABLE_WRITABLE_PROPERTY) || | |
1216 | (i->flags & (SD_BUS_VTABLE_DEPRECATED | SD_BUS_VTABLE_HIDDEN)) != 0) | |
1217 | continue; | |
1218 | ||
1219 | fprintf(f, "%s\n", i->x.property.member); | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | void dump_bus_properties(FILE *f) { | |
1224 | assert(f); | |
1225 | ||
1226 | vtable_dump_bus_properties(f, bus_automount_vtable); | |
1227 | vtable_dump_bus_properties(f, bus_cgroup_vtable); | |
1228 | vtable_dump_bus_properties(f, bus_device_vtable); | |
1229 | vtable_dump_bus_properties(f, bus_exec_vtable); | |
1230 | vtable_dump_bus_properties(f, bus_job_vtable); | |
1231 | vtable_dump_bus_properties(f, bus_kill_vtable); | |
1232 | vtable_dump_bus_properties(f, bus_manager_vtable); | |
1233 | vtable_dump_bus_properties(f, bus_mount_vtable); | |
1234 | vtable_dump_bus_properties(f, bus_path_vtable); | |
1235 | vtable_dump_bus_properties(f, bus_scope_vtable); | |
1236 | vtable_dump_bus_properties(f, bus_service_vtable); | |
1237 | vtable_dump_bus_properties(f, bus_slice_vtable); | |
1238 | vtable_dump_bus_properties(f, bus_socket_vtable); | |
1239 | vtable_dump_bus_properties(f, bus_swap_vtable); | |
1240 | vtable_dump_bus_properties(f, bus_target_vtable); | |
1241 | vtable_dump_bus_properties(f, bus_timer_vtable); | |
1242 | vtable_dump_bus_properties(f, bus_unit_vtable); | |
1243 | vtable_dump_bus_properties(f, bus_unit_cgroup_vtable); | |
1244 | } |