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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
ea430986 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
ea430986 LP |
22 | #include <errno.h> |
23 | ||
24 | #include "dbus.h" | |
25 | #include "log.h" | |
4139c1b2 | 26 | #include "dbus-unit.h" |
398ef8ba | 27 | #include "bus-errors.h" |
bfebab7f | 28 | #include "dbus-common.h" |
ea430986 | 29 | |
9a60da28 | 30 | const char bus_unit_interface[] _introspect_("Unit") = BUS_UNIT_INTERFACE; |
4288f619 | 31 | |
c4e2ceae LP |
32 | #define INVALIDATING_PROPERTIES \ |
33 | "LoadState\0" \ | |
34 | "ActiveState\0" \ | |
35 | "SubState\0" \ | |
36 | "InactiveExitTimestamp\0" \ | |
37 | "ActiveEnterTimestamp\0" \ | |
38 | "ActiveExitTimestamp\0" \ | |
39 | "InactiveEnterTimestamp\0" \ | |
40 | "Job\0" \ | |
34df5a34 | 41 | "NeedDaemonReload\0" |
c4e2ceae | 42 | |
e2110e5d | 43 | static int bus_unit_append_names(DBusMessageIter *i, const char *property, void *data) { |
4139c1b2 LP |
44 | char *t; |
45 | Iterator j; | |
46 | DBusMessageIter sub; | |
47 | Unit *u = data; | |
48 | ||
49 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub)) | |
50 | return -ENOMEM; | |
51 | ||
ac155bb8 | 52 | SET_FOREACH(t, u->names, j) |
4139c1b2 LP |
53 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t)) |
54 | return -ENOMEM; | |
55 | ||
56 | if (!dbus_message_iter_close_container(i, &sub)) | |
57 | return -ENOMEM; | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
e2110e5d | 62 | static int bus_unit_append_following(DBusMessageIter *i, const char *property, void *data) { |
a7f241db | 63 | Unit *u = data, *f; |
8fe914ec LP |
64 | const char *d; |
65 | ||
8fe914ec LP |
66 | assert(i); |
67 | assert(property); | |
68 | assert(u); | |
69 | ||
a7f241db | 70 | f = unit_following(u); |
ac155bb8 | 71 | d = f ? f->id : ""; |
8fe914ec LP |
72 | |
73 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d)) | |
74 | return -ENOMEM; | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
e2110e5d | 79 | static int bus_unit_append_dependencies(DBusMessageIter *i, const char *property, void *data) { |
5301be81 LP |
80 | Unit *u; |
81 | Iterator j; | |
82 | DBusMessageIter sub; | |
83 | Set *s = data; | |
84 | ||
85 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub)) | |
86 | return -ENOMEM; | |
87 | ||
88 | SET_FOREACH(u, s, j) | |
ac155bb8 | 89 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &u->id)) |
5301be81 LP |
90 | return -ENOMEM; |
91 | ||
92 | if (!dbus_message_iter_close_container(i, &sub)) | |
93 | return -ENOMEM; | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
e2110e5d | 98 | static int bus_unit_append_description(DBusMessageIter *i, const char *property, void *data) { |
ea430986 LP |
99 | Unit *u = data; |
100 | const char *d; | |
101 | ||
ea430986 LP |
102 | assert(i); |
103 | assert(property); | |
104 | assert(u); | |
105 | ||
106 | d = unit_description(u); | |
107 | ||
108 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d)) | |
109 | return -ENOMEM; | |
110 | ||
111 | return 0; | |
112 | } | |
113 | ||
e2110e5d | 114 | static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_load_state, unit_load_state, UnitLoadState); |
ea430986 | 115 | |
e2110e5d | 116 | static int bus_unit_append_active_state(DBusMessageIter *i, const char *property, void *data) { |
ea430986 LP |
117 | Unit *u = data; |
118 | const char *state; | |
119 | ||
ea430986 LP |
120 | assert(i); |
121 | assert(property); | |
122 | assert(u); | |
123 | ||
124 | state = unit_active_state_to_string(unit_active_state(u)); | |
125 | ||
126 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state)) | |
127 | return -ENOMEM; | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
e2110e5d | 132 | static int bus_unit_append_sub_state(DBusMessageIter *i, const char *property, void *data) { |
10a94420 LP |
133 | Unit *u = data; |
134 | const char *state; | |
135 | ||
10a94420 LP |
136 | assert(i); |
137 | assert(property); | |
138 | assert(u); | |
139 | ||
140 | state = unit_sub_state_to_string(u); | |
141 | ||
142 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state)) | |
143 | return -ENOMEM; | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
e2110e5d | 148 | static int bus_unit_append_file_state(DBusMessageIter *i, const char *property, void *data) { |
a4375746 LP |
149 | Unit *u = data; |
150 | const char *state; | |
151 | ||
152 | assert(i); | |
153 | assert(property); | |
154 | assert(u); | |
155 | ||
156 | state = strempty(unit_file_state_to_string(unit_get_unit_file_state(u))); | |
157 | ||
158 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state)) | |
159 | return -ENOMEM; | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
e2110e5d | 164 | static int bus_unit_append_can_start(DBusMessageIter *i, const char *property, void *data) { |
38131695 LP |
165 | Unit *u = data; |
166 | dbus_bool_t b; | |
167 | ||
38131695 LP |
168 | assert(i); |
169 | assert(property); | |
170 | assert(u); | |
171 | ||
064f51fa | 172 | b = unit_can_start(u) && |
ac155bb8 | 173 | !u->refuse_manual_start; |
b5e9dba8 LP |
174 | |
175 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) | |
176 | return -ENOMEM; | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
e2110e5d | 181 | static int bus_unit_append_can_stop(DBusMessageIter *i, const char *property, void *data) { |
b5e9dba8 LP |
182 | Unit *u = data; |
183 | dbus_bool_t b; | |
184 | ||
b5e9dba8 LP |
185 | assert(i); |
186 | assert(property); | |
187 | assert(u); | |
188 | ||
189 | /* On the lower levels we assume that every unit we can start | |
190 | * we can also stop */ | |
191 | ||
192 | b = unit_can_start(u) && | |
ac155bb8 | 193 | !u->refuse_manual_stop; |
38131695 LP |
194 | |
195 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) | |
196 | return -ENOMEM; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
e2110e5d | 201 | static int bus_unit_append_can_reload(DBusMessageIter *i, const char *property, void *data) { |
38131695 LP |
202 | Unit *u = data; |
203 | dbus_bool_t b; | |
204 | ||
38131695 LP |
205 | assert(i); |
206 | assert(property); | |
207 | assert(u); | |
208 | ||
4139c1b2 | 209 | b = unit_can_reload(u); |
38131695 LP |
210 | |
211 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) | |
212 | return -ENOMEM; | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
e2110e5d | 217 | static int bus_unit_append_can_isolate(DBusMessageIter *i, const char *property, void *data) { |
2528a7a6 LP |
218 | Unit *u = data; |
219 | dbus_bool_t b; | |
220 | ||
2528a7a6 LP |
221 | assert(i); |
222 | assert(property); | |
223 | assert(u); | |
224 | ||
225 | b = unit_can_isolate(u) && | |
ac155bb8 | 226 | !u->refuse_manual_start; |
2528a7a6 LP |
227 | |
228 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) | |
229 | return -ENOMEM; | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
e2110e5d | 234 | static int bus_unit_append_job(DBusMessageIter *i, const char *property, void *data) { |
38131695 LP |
235 | Unit *u = data; |
236 | DBusMessageIter sub; | |
237 | char *p; | |
238 | ||
38131695 LP |
239 | assert(i); |
240 | assert(property); | |
241 | assert(u); | |
242 | ||
243 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub)) | |
244 | return -ENOMEM; | |
245 | ||
ac155bb8 | 246 | if (u->job) { |
38131695 | 247 | |
ac155bb8 | 248 | if (!(p = job_dbus_path(u->job))) |
38131695 LP |
249 | return -ENOMEM; |
250 | ||
ac155bb8 | 251 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->job->id) || |
86ad3bc1 | 252 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) { |
38131695 LP |
253 | free(p); |
254 | return -ENOMEM; | |
255 | } | |
256 | } else { | |
257 | uint32_t id = 0; | |
258 | ||
259 | /* No job, so let's fill in some placeholder | |
260 | * data. Since we need to fill in a valid path we | |
261 | * simple point to ourselves. */ | |
262 | ||
263 | if (!(p = unit_dbus_path(u))) | |
264 | return -ENOMEM; | |
265 | ||
266 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &id) || | |
86ad3bc1 | 267 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) { |
38131695 LP |
268 | free(p); |
269 | return -ENOMEM; | |
270 | } | |
271 | } | |
272 | ||
273 | free(p); | |
274 | ||
275 | if (!dbus_message_iter_close_container(i, &sub)) | |
276 | return -ENOMEM; | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
e2110e5d | 281 | static int bus_unit_append_default_cgroup(DBusMessageIter *i, const char *property, void *data) { |
4139c1b2 LP |
282 | Unit *u = data; |
283 | char *t; | |
284 | CGroupBonding *cgb; | |
285 | bool success; | |
ea430986 | 286 | |
4139c1b2 LP |
287 | assert(i); |
288 | assert(property); | |
289 | assert(u); | |
290 | ||
291 | if ((cgb = unit_get_default_cgroup(u))) { | |
292 | if (!(t = cgroup_bonding_to_string(cgb))) | |
293 | return -ENOMEM; | |
294 | } else | |
295 | t = (char*) ""; | |
ea430986 | 296 | |
4139c1b2 LP |
297 | success = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t); |
298 | ||
299 | if (cgb) | |
300 | free(t); | |
301 | ||
302 | return success ? 0 : -ENOMEM; | |
303 | } | |
304 | ||
e2110e5d | 305 | static int bus_unit_append_cgroups(DBusMessageIter *i, const char *property, void *data) { |
4139c1b2 LP |
306 | Unit *u = data; |
307 | CGroupBonding *cgb; | |
308 | DBusMessageIter sub; | |
309 | ||
310 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub)) | |
311 | return -ENOMEM; | |
312 | ||
ac155bb8 | 313 | LIST_FOREACH(by_unit, cgb, u->cgroup_bondings) { |
4139c1b2 LP |
314 | char *t; |
315 | bool success; | |
316 | ||
317 | if (!(t = cgroup_bonding_to_string(cgb))) | |
318 | return -ENOMEM; | |
319 | ||
320 | success = dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t); | |
321 | free(t); | |
322 | ||
323 | if (!success) | |
324 | return -ENOMEM; | |
325 | } | |
326 | ||
327 | if (!dbus_message_iter_close_container(i, &sub)) | |
328 | return -ENOMEM; | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
e2110e5d | 333 | static int bus_unit_append_cgroup_attrs(DBusMessageIter *i, const char *property, void *data) { |
d8bbda91 LP |
334 | Unit *u = data; |
335 | CGroupAttribute *a; | |
336 | DBusMessageIter sub, sub2; | |
337 | ||
338 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sss)", &sub)) | |
339 | return -ENOMEM; | |
340 | ||
ac155bb8 | 341 | LIST_FOREACH(by_unit, a, u->cgroup_attributes) { |
d8bbda91 LP |
342 | char *v = NULL; |
343 | bool success; | |
344 | ||
345 | if (a->map_callback) | |
346 | a->map_callback(a->controller, a->name, a->value, &v); | |
347 | ||
348 | success = | |
349 | dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) && | |
350 | dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &a->controller) && | |
351 | dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &a->name) && | |
352 | dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, v ? &v : &a->value) && | |
353 | dbus_message_iter_close_container(&sub, &sub2); | |
354 | ||
355 | free(v); | |
356 | ||
357 | if (!success) | |
358 | return -ENOMEM; | |
359 | } | |
360 | ||
361 | if (!dbus_message_iter_close_container(i, &sub)) | |
362 | return -ENOMEM; | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
e2110e5d | 367 | static int bus_unit_append_need_daemon_reload(DBusMessageIter *i, const char *property, void *data) { |
45fb0699 LP |
368 | Unit *u = data; |
369 | dbus_bool_t b; | |
370 | ||
45fb0699 LP |
371 | assert(i); |
372 | assert(property); | |
373 | assert(u); | |
374 | ||
375 | b = unit_need_daemon_reload(u); | |
376 | ||
377 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) | |
378 | return -ENOMEM; | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
e2110e5d | 383 | static int bus_unit_append_load_error(DBusMessageIter *i, const char *property, void *data) { |
9f39404c LP |
384 | Unit *u = data; |
385 | const char *name, *message; | |
386 | DBusMessageIter sub; | |
387 | ||
388 | assert(i); | |
389 | assert(property); | |
390 | assert(u); | |
391 | ||
ac155bb8 MS |
392 | if (u->load_error != 0) { |
393 | name = bus_errno_to_dbus(u->load_error); | |
394 | message = strempty(strerror(-u->load_error)); | |
9f39404c LP |
395 | } else |
396 | name = message = ""; | |
397 | ||
398 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub) || | |
399 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &name) || | |
400 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &message) || | |
401 | !dbus_message_iter_close_container(i, &sub)) | |
402 | return -ENOMEM; | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
5e8d1c9a | 407 | static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusConnection *connection, DBusMessage *message) { |
b548631a | 408 | DBusMessage *reply = NULL; |
ac155bb8 | 409 | Manager *m = u->manager; |
b548631a LP |
410 | DBusError error; |
411 | JobType job_type = _JOB_TYPE_INVALID; | |
c87eba54 | 412 | char *path = NULL; |
6f28c033 | 413 | bool reload_if_possible = false; |
b548631a LP |
414 | |
415 | dbus_error_init(&error); | |
416 | ||
417 | if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Start")) | |
418 | job_type = JOB_START; | |
419 | else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Stop")) | |
420 | job_type = JOB_STOP; | |
421 | else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Reload")) | |
422 | job_type = JOB_RELOAD; | |
423 | else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Restart")) | |
424 | job_type = JOB_RESTART; | |
9a1ac7b9 LP |
425 | else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "TryRestart")) |
426 | job_type = JOB_TRY_RESTART; | |
6f28c033 LP |
427 | else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrRestart")) { |
428 | reload_if_possible = true; | |
429 | job_type = JOB_RESTART; | |
430 | } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrTryRestart")) { | |
431 | reload_if_possible = true; | |
432 | job_type = JOB_TRY_RESTART; | |
8a0867d6 LP |
433 | } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Kill")) { |
434 | const char *swho, *smode; | |
435 | int32_t signo; | |
436 | KillMode mode; | |
437 | KillWho who; | |
438 | int r; | |
439 | ||
440 | if (!dbus_message_get_args( | |
441 | message, | |
442 | &error, | |
443 | DBUS_TYPE_STRING, &swho, | |
444 | DBUS_TYPE_STRING, &smode, | |
445 | DBUS_TYPE_INT32, &signo, | |
446 | DBUS_TYPE_INVALID)) | |
bfebab7f | 447 | return bus_send_error_reply(connection, message, &error, -EINVAL); |
8a0867d6 | 448 | |
0a524ba7 LP |
449 | if (isempty(swho)) |
450 | who = KILL_ALL; | |
451 | else { | |
452 | who = kill_who_from_string(swho); | |
453 | if (who < 0) | |
454 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
455 | } | |
456 | ||
457 | if (isempty(smode)) | |
458 | mode = KILL_CONTROL_GROUP; | |
459 | else { | |
460 | mode = kill_mode_from_string(smode); | |
461 | if (mode < 0) | |
462 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
463 | } | |
464 | ||
465 | if (signo <= 0 || signo >= _NSIG) | |
bfebab7f | 466 | return bus_send_error_reply(connection, message, &error, -EINVAL); |
8a0867d6 LP |
467 | |
468 | if ((r = unit_kill(u, who, mode, signo, &error)) < 0) | |
bfebab7f | 469 | return bus_send_error_reply(connection, message, &error, r); |
8a0867d6 LP |
470 | |
471 | if (!(reply = dbus_message_new_method_return(message))) | |
472 | goto oom; | |
473 | ||
fdf20a31 | 474 | } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ResetFailed")) { |
5632e374 | 475 | |
fdf20a31 | 476 | unit_reset_failed(u); |
5632e374 LP |
477 | |
478 | if (!(reply = dbus_message_new_method_return(message))) | |
479 | goto oom; | |
480 | ||
6f28c033 | 481 | } else if (UNIT_VTABLE(u)->bus_message_handler) |
5e8d1c9a | 482 | return UNIT_VTABLE(u)->bus_message_handler(u, connection, message); |
b548631a | 483 | else |
4139c1b2 | 484 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; |
b548631a LP |
485 | |
486 | if (job_type != _JOB_TYPE_INVALID) { | |
487 | const char *smode; | |
488 | JobMode mode; | |
489 | Job *j; | |
490 | int r; | |
b548631a | 491 | |
ac155bb8 MS |
492 | if ((job_type == JOB_START && u->refuse_manual_start) || |
493 | (job_type == JOB_STOP && u->refuse_manual_stop) || | |
b5e9dba8 | 494 | ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) && |
ac155bb8 | 495 | (u->refuse_manual_start || u->refuse_manual_stop))) { |
b5e9dba8 | 496 | dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only."); |
bfebab7f | 497 | return bus_send_error_reply(connection, message, &error, -EPERM); |
398ef8ba | 498 | } |
bc0f8771 | 499 | |
b548631a LP |
500 | if (!dbus_message_get_args( |
501 | message, | |
502 | &error, | |
503 | DBUS_TYPE_STRING, &smode, | |
504 | DBUS_TYPE_INVALID)) | |
bfebab7f | 505 | return bus_send_error_reply(connection, message, &error, -EINVAL); |
b548631a | 506 | |
6f28c033 LP |
507 | if (reload_if_possible && unit_can_reload(u)) { |
508 | if (job_type == JOB_RESTART) | |
509 | job_type = JOB_RELOAD_OR_START; | |
510 | else if (job_type == JOB_TRY_RESTART) | |
511 | job_type = JOB_RELOAD; | |
512 | } | |
513 | ||
398ef8ba LP |
514 | if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) { |
515 | dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode); | |
bfebab7f | 516 | return bus_send_error_reply(connection, message, &error, -EINVAL); |
398ef8ba | 517 | } |
b548631a | 518 | |
398ef8ba | 519 | if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0) |
bfebab7f | 520 | return bus_send_error_reply(connection, message, &error, r); |
b548631a LP |
521 | |
522 | if (!(reply = dbus_message_new_method_return(message))) | |
523 | goto oom; | |
524 | ||
525 | if (!(path = job_dbus_path(j))) | |
526 | goto oom; | |
527 | ||
528 | if (!dbus_message_append_args( | |
529 | reply, | |
530 | DBUS_TYPE_OBJECT_PATH, &path, | |
531 | DBUS_TYPE_INVALID)) | |
532 | goto oom; | |
533 | } | |
534 | ||
535 | if (reply) { | |
5e8d1c9a | 536 | if (!dbus_connection_send(connection, reply, NULL)) |
b548631a LP |
537 | goto oom; |
538 | ||
539 | dbus_message_unref(reply); | |
540 | } | |
541 | ||
da19d5c1 LP |
542 | free(path); |
543 | ||
b548631a LP |
544 | return DBUS_HANDLER_RESULT_HANDLED; |
545 | ||
546 | oom: | |
c87eba54 LP |
547 | free(path); |
548 | ||
b548631a LP |
549 | if (reply) |
550 | dbus_message_unref(reply); | |
551 | ||
552 | dbus_error_free(&error); | |
553 | ||
554 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
ea430986 LP |
555 | } |
556 | ||
5e8d1c9a | 557 | static DBusHandlerResult bus_unit_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { |
ea430986 LP |
558 | Manager *m = data; |
559 | Unit *u; | |
560 | int r; | |
2cccbca4 | 561 | DBusMessage *reply; |
ea430986 LP |
562 | |
563 | assert(connection); | |
564 | assert(message); | |
565 | assert(m); | |
566 | ||
2cccbca4 LP |
567 | if (streq(dbus_message_get_path(message), "/org/freedesktop/systemd1/unit")) { |
568 | /* Be nice to gdbus and return introspection data for our mid-level paths */ | |
569 | ||
570 | if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
571 | char *introspection = NULL; | |
572 | FILE *f; | |
573 | Iterator i; | |
574 | const char *k; | |
575 | size_t size; | |
576 | ||
577 | if (!(reply = dbus_message_new_method_return(message))) | |
578 | goto oom; | |
579 | ||
580 | /* We roll our own introspection code here, instead of | |
581 | * relying on bus_default_message_handler() because we | |
582 | * need to generate our introspection string | |
583 | * dynamically. */ | |
584 | ||
585 | if (!(f = open_memstream(&introspection, &size))) | |
586 | goto oom; | |
587 | ||
588 | fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE | |
589 | "<node>\n", f); | |
590 | ||
591 | fputs(BUS_INTROSPECTABLE_INTERFACE, f); | |
592 | fputs(BUS_PEER_INTERFACE, f); | |
593 | ||
594 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
595 | char *p; | |
596 | ||
ac155bb8 | 597 | if (k != u->id) |
2cccbca4 LP |
598 | continue; |
599 | ||
600 | if (!(p = bus_path_escape(k))) { | |
601 | fclose(f); | |
602 | free(introspection); | |
603 | goto oom; | |
604 | } | |
605 | ||
606 | fprintf(f, "<node name=\"%s\"/>", p); | |
607 | free(p); | |
608 | } | |
609 | ||
610 | fputs("</node>\n", f); | |
611 | ||
612 | if (ferror(f)) { | |
613 | fclose(f); | |
614 | free(introspection); | |
615 | goto oom; | |
616 | } | |
617 | ||
618 | fclose(f); | |
619 | ||
620 | if (!introspection) | |
621 | goto oom; | |
622 | ||
623 | if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) { | |
624 | free(introspection); | |
625 | goto oom; | |
626 | } | |
627 | ||
628 | free(introspection); | |
629 | ||
630 | if (!dbus_connection_send(connection, reply, NULL)) | |
631 | goto oom; | |
632 | ||
633 | dbus_message_unref(reply); | |
634 | ||
635 | return DBUS_HANDLER_RESULT_HANDLED; | |
636 | } | |
637 | ||
638 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; | |
639 | } | |
640 | ||
ea430986 LP |
641 | if ((r = manager_get_unit_from_dbus_path(m, dbus_message_get_path(message), &u)) < 0) { |
642 | ||
643 | if (r == -ENOMEM) | |
644 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
645 | ||
08672cb5 LP |
646 | if (r == -ENOENT) { |
647 | DBusError e; | |
b8a021c9 AB |
648 | |
649 | dbus_error_init(&e); | |
08672cb5 | 650 | dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown unit"); |
bfebab7f | 651 | return bus_send_error_reply(connection, message, &e, r); |
08672cb5 | 652 | } |
ea430986 | 653 | |
bfebab7f | 654 | return bus_send_error_reply(connection, message, NULL, r); |
ea430986 LP |
655 | } |
656 | ||
5e8d1c9a | 657 | return bus_unit_message_dispatch(u, connection, message); |
2cccbca4 LP |
658 | |
659 | oom: | |
660 | if (reply) | |
661 | dbus_message_unref(reply); | |
662 | ||
663 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
ea430986 LP |
664 | } |
665 | ||
666 | const DBusObjectPathVTable bus_unit_vtable = { | |
667 | .message_function = bus_unit_message_handler | |
668 | }; | |
c1e1601e LP |
669 | |
670 | void bus_unit_send_change_signal(Unit *u) { | |
671 | char *p = NULL; | |
672 | DBusMessage *m = NULL; | |
673 | ||
674 | assert(u); | |
c1e1601e | 675 | |
ac155bb8 MS |
676 | if (u->in_dbus_queue) { |
677 | LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u); | |
678 | u->in_dbus_queue = false; | |
c0bd0cf7 | 679 | } |
c1e1601e | 680 | |
ac155bb8 | 681 | if (!u->id) |
04ade7d2 LP |
682 | return; |
683 | ||
ac155bb8 MS |
684 | if (!bus_has_subscriber(u->manager)) { |
685 | u->sent_dbus_new_signal = true; | |
c1e1601e | 686 | return; |
94b6dfa2 | 687 | } |
c1e1601e LP |
688 | |
689 | if (!(p = unit_dbus_path(u))) | |
690 | goto oom; | |
691 | ||
ac155bb8 | 692 | if (u->sent_dbus_new_signal) { |
c4e2ceae LP |
693 | /* Send a properties changed signal. First for the |
694 | * specific type, then for the generic unit. The | |
695 | * clients may rely on this order to get atomic | |
696 | * behaviour if needed. */ | |
697 | ||
698 | if (UNIT_VTABLE(u)->bus_invalidating_properties) { | |
699 | ||
700 | if (!(m = bus_properties_changed_new(p, | |
701 | UNIT_VTABLE(u)->bus_interface, | |
702 | UNIT_VTABLE(u)->bus_invalidating_properties))) | |
703 | goto oom; | |
704 | ||
ac155bb8 | 705 | if (bus_broadcast(u->manager, m) < 0) |
c4e2ceae | 706 | goto oom; |
c1e1601e | 707 | |
c4e2ceae LP |
708 | dbus_message_unref(m); |
709 | } | |
710 | ||
711 | if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Unit", INVALIDATING_PROPERTIES))) | |
c1e1601e | 712 | goto oom; |
c4e2ceae | 713 | |
c1e1601e | 714 | } else { |
c1e1601e LP |
715 | /* Send a new signal */ |
716 | ||
701cc384 | 717 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitNew"))) |
c1e1601e LP |
718 | goto oom; |
719 | ||
c1e1601e | 720 | if (!dbus_message_append_args(m, |
ac155bb8 | 721 | DBUS_TYPE_STRING, &u->id, |
c1e1601e LP |
722 | DBUS_TYPE_OBJECT_PATH, &p, |
723 | DBUS_TYPE_INVALID)) | |
724 | goto oom; | |
725 | } | |
726 | ||
ac155bb8 | 727 | if (bus_broadcast(u->manager, m) < 0) |
c1e1601e LP |
728 | goto oom; |
729 | ||
730 | free(p); | |
731 | dbus_message_unref(m); | |
732 | ||
ac155bb8 | 733 | u->sent_dbus_new_signal = true; |
c1e1601e LP |
734 | |
735 | return; | |
736 | ||
737 | oom: | |
738 | free(p); | |
739 | ||
740 | if (m) | |
741 | dbus_message_unref(m); | |
742 | ||
743 | log_error("Failed to allocate unit change/new signal."); | |
744 | } | |
745 | ||
746 | void bus_unit_send_removed_signal(Unit *u) { | |
747 | char *p = NULL; | |
748 | DBusMessage *m = NULL; | |
c1e1601e LP |
749 | |
750 | assert(u); | |
751 | ||
ac155bb8 | 752 | if (!bus_has_subscriber(u->manager)) |
c1e1601e LP |
753 | return; |
754 | ||
ac155bb8 | 755 | if (!u->sent_dbus_new_signal) |
7535cc78 LP |
756 | bus_unit_send_change_signal(u); |
757 | ||
ac155bb8 | 758 | if (!u->id) |
04ade7d2 LP |
759 | return; |
760 | ||
c1e1601e LP |
761 | if (!(p = unit_dbus_path(u))) |
762 | goto oom; | |
763 | ||
701cc384 | 764 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitRemoved"))) |
c1e1601e LP |
765 | goto oom; |
766 | ||
c1e1601e | 767 | if (!dbus_message_append_args(m, |
ac155bb8 | 768 | DBUS_TYPE_STRING, &u->id, |
c1e1601e LP |
769 | DBUS_TYPE_OBJECT_PATH, &p, |
770 | DBUS_TYPE_INVALID)) | |
771 | goto oom; | |
772 | ||
ac155bb8 | 773 | if (bus_broadcast(u->manager, m) < 0) |
c1e1601e LP |
774 | goto oom; |
775 | ||
776 | free(p); | |
777 | dbus_message_unref(m); | |
778 | ||
779 | return; | |
780 | ||
781 | oom: | |
782 | free(p); | |
783 | ||
784 | if (m) | |
785 | dbus_message_unref(m); | |
786 | ||
787 | log_error("Failed to allocate unit remove signal."); | |
788 | } | |
e2110e5d MS |
789 | |
790 | const BusProperty bus_unit_properties[] = { | |
791 | { "Id", bus_property_append_string, "s", offsetof(Unit, id), true }, | |
792 | { "Names", bus_unit_append_names, "as", 0 }, | |
793 | { "Following", bus_unit_append_following, "s", 0 }, | |
794 | { "Requires", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRES]), true }, | |
795 | { "RequiresOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), true }, | |
796 | { "Requisite", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUISITE]), true }, | |
797 | { "RequisiteOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), true }, | |
798 | { "Wants", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_WANTS]), true }, | |
799 | { "BindTo", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BIND_TO]), true }, | |
800 | { "RequiredBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), true }, | |
801 | { "RequiredByOverridable",bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), true }, | |
802 | { "WantedBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_WANTED_BY]), true }, | |
803 | { "BoundBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BOUND_BY]), true }, | |
804 | { "Conflicts", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONFLICTS]), true }, | |
805 | { "ConflictedBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), true }, | |
806 | { "Before", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BEFORE]), true }, | |
807 | { "After", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_AFTER]), true }, | |
808 | { "OnFailure", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_ON_FAILURE]), true }, | |
809 | { "Triggers", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_TRIGGERS]), true }, | |
810 | { "TriggeredBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), true }, | |
811 | { "PropagateReloadTo", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_PROPAGATE_RELOAD_TO]), true }, | |
812 | { "PropagateReloadFrom", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_PROPAGATE_RELOAD_FROM]), true }, | |
813 | { "Description", bus_unit_append_description, "s", 0 }, | |
814 | { "LoadState", bus_unit_append_load_state, "s", offsetof(Unit, load_state) }, | |
815 | { "ActiveState", bus_unit_append_active_state, "s", 0 }, | |
816 | { "SubState", bus_unit_append_sub_state, "s", 0 }, | |
817 | { "FragmentPath", bus_property_append_string, "s", offsetof(Unit, fragment_path), true }, | |
818 | { "UnitFileState", bus_unit_append_file_state, "s", 0 }, | |
819 | { "InactiveExitTimestamp",bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.realtime) }, | |
820 | { "InactiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.monotonic) }, | |
821 | { "ActiveEnterTimestamp", bus_property_append_usec, "t", offsetof(Unit, active_enter_timestamp.realtime) }, | |
822 | { "ActiveEnterTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, active_enter_timestamp.monotonic) }, | |
823 | { "ActiveExitTimestamp", bus_property_append_usec, "t", offsetof(Unit, active_exit_timestamp.realtime) }, | |
824 | { "ActiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, active_exit_timestamp.monotonic) }, | |
825 | { "InactiveEnterTimestamp", bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.realtime) }, | |
826 | { "InactiveEnterTimestampMonotonic",bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.monotonic) }, | |
827 | { "CanStart", bus_unit_append_can_start, "b", 0 }, | |
828 | { "CanStop", bus_unit_append_can_stop, "b", 0 }, | |
829 | { "CanReload", bus_unit_append_can_reload, "b", 0 }, | |
830 | { "CanIsolate", bus_unit_append_can_isolate, "b", 0 }, | |
831 | { "Job", bus_unit_append_job, "(uo)", 0 }, | |
832 | { "StopWhenUnneeded", bus_property_append_bool, "b", offsetof(Unit, stop_when_unneeded) }, | |
833 | { "RefuseManualStart", bus_property_append_bool, "b", offsetof(Unit, refuse_manual_start) }, | |
834 | { "RefuseManualStop", bus_property_append_bool, "b", offsetof(Unit, refuse_manual_stop) }, | |
835 | { "AllowIsolate", bus_property_append_bool, "b", offsetof(Unit, allow_isolate) }, | |
836 | { "DefaultDependencies", bus_property_append_bool, "b", offsetof(Unit, default_dependencies) }, | |
837 | { "OnFailureIsolate", bus_property_append_bool, "b", offsetof(Unit, on_failure_isolate) }, | |
838 | { "IgnoreOnIsolate", bus_property_append_bool, "b", offsetof(Unit, ignore_on_isolate) }, | |
839 | { "IgnoreOnSnapshot", bus_property_append_bool, "b", offsetof(Unit, ignore_on_snapshot) }, | |
840 | { "DefaultControlGroup", bus_unit_append_default_cgroup, "s", 0 }, | |
841 | { "ControlGroup", bus_unit_append_cgroups, "as", 0 }, | |
842 | { "ControlGroupAttributes", bus_unit_append_cgroup_attrs,"a(sss)", 0 }, | |
843 | { "NeedDaemonReload", bus_unit_append_need_daemon_reload, "b", 0 }, | |
844 | { "JobTimeoutUSec", bus_property_append_usec, "t", offsetof(Unit, job_timeout) }, | |
845 | { "ConditionTimestamp", bus_property_append_usec, "t", offsetof(Unit, condition_timestamp.realtime) }, | |
846 | { "ConditionTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, condition_timestamp.monotonic) }, | |
847 | { "ConditionResult", bus_property_append_bool, "b", offsetof(Unit, condition_result) }, | |
848 | { "LoadError", bus_unit_append_load_error, "(ss)", 0 }, | |
849 | { NULL, } | |
850 | }; |