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basic/process-util: convert bool arg to flags
[thirdparty/systemd.git] / src / core / dbus-unit.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
a7334b09 2
718db961 3#include "sd-bus.h"
07630cea 4
b5efdb8a 5#include "alloc-util.h"
906c06f6 6#include "bpf-firewall.h"
07630cea
LP		 7#include "bus-common-errors.h"
8#include "cgroup-util.h"
faa781cf 9#include "condition.h"
c5a97ed1 10#include "dbus-job.h"
8752c575 11#include "dbus-unit.h"
faa781cf 12#include "dbus-util.h"
07630cea 13#include "dbus.h"
291d565a 14#include "fd-util.h"
8752c575 15#include "locale-util.h"
ea430986 16#include "log.h"
faa781cf 17#include "path-util.h"
291d565a 18#include "process-util.h"
e2417e41 19#include "selinux-access.h"
6eb7c172 20#include "signal-util.h"
efdb0237 21#include "special.h"
83f18c91 22#include "string-table.h"
07630cea
LP		 23#include "string-util.h"
24#include "strv.h"
ee104e11 25#include "user-util.h"
faa781cf 26#include "web-util.h"
718db961 27
874bd264
YW		 28static bool unit_can_start_refuse_manual(Unit *u) {
29 return unit_can_start(u) && !u->refuse_manual_start;
30}
31
32static bool unit_can_stop_refuse_manual(Unit *u) {
33 return unit_can_stop(u) && !u->refuse_manual_stop;
34}
35
36static bool unit_can_isolate_refuse_manual(Unit *u) {
37 return unit_can_isolate(u) && !u->refuse_manual_start;
38}
39
5afe510c 40static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode, collect_mode, CollectMode);
718db961 41static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
d420282b 42static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode);
87a47f99 43static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action, emergency_action, EmergencyAction);
cb7f88fc
YW		 44static BUS_DEFINE_PROPERTY_GET(property_get_description, "s", Unit, unit_description);
45static BUS_DEFINE_PROPERTY_GET2(property_get_active_state, "s", Unit, unit_active_state, unit_active_state_to_string);
46static BUS_DEFINE_PROPERTY_GET(property_get_sub_state, "s", Unit, unit_sub_state_to_string);
47static BUS_DEFINE_PROPERTY_GET2(property_get_unit_file_state, "s", Unit, unit_get_unit_file_state, unit_file_state_to_string);
48static BUS_DEFINE_PROPERTY_GET(property_get_can_reload, "b", Unit, unit_can_reload);
874bd264
YW		 49static BUS_DEFINE_PROPERTY_GET(property_get_can_start, "b", Unit, unit_can_start_refuse_manual);
50static BUS_DEFINE_PROPERTY_GET(property_get_can_stop, "b", Unit, unit_can_stop_refuse_manual);
51static BUS_DEFINE_PROPERTY_GET(property_get_can_isolate, "b", Unit, unit_can_isolate_refuse_manual);
cb7f88fc 52static BUS_DEFINE_PROPERTY_GET(property_get_need_daemon_reload, "b", Unit, unit_need_daemon_reload);
92c23c5a 53static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_empty_strv, "as", 0);
718db961
LP		 54
55static int property_get_names(
56 sd_bus *bus,
57 const char *path,
58 const char *interface,
59 const char *property,
60 sd_bus_message *reply,
ebcf1f97
LP		 61 void *userdata,
62 sd_bus_error *error) {
718db961 63
14f7edb0 64 Set **s = userdata;
718db961
LP		 65 Iterator i;
66 const char *t;
67 int r;
ea430986 68
718db961
LP		 69 assert(bus);
70 assert(reply);
14f7edb0 71 assert(s);
4139c1b2 72
718db961
LP		 73 r = sd_bus_message_open_container(reply, 'a', "s");
74 if (r < 0)
75 return r;
4139c1b2 76
14f7edb0 77 SET_FOREACH(t, *s, i) {
718db961
LP		 78 r = sd_bus_message_append(reply, "s", t);
79 if (r < 0)
80 return r;
81 }
4139c1b2 82
718db961 83 return sd_bus_message_close_container(reply);
4139c1b2
LP		 84}
85
718db961
LP		 86static int property_get_following(
87 sd_bus *bus,
88 const char *path,
89 const char *interface,
90 const char *property,
91 sd_bus_message *reply,
ebcf1f97
LP		 92 void *userdata,
93 sd_bus_error *error) {
718db961
LP		 94
95 Unit *u = userdata, *f;
8fe914ec 96
718db961
LP		 97 assert(bus);
98 assert(reply);
8fe914ec
LP		 99 assert(u);
100
a7f241db 101 f = unit_following(u);
79a60375 102 return sd_bus_message_append(reply, "s", f ? f->id : NULL);
8fe914ec
LP		 103}
104
718db961
LP		 105static int property_get_dependencies(
106 sd_bus *bus,
107 const char *path,
108 const char *interface,
109 const char *property,
110 sd_bus_message *reply,
ebcf1f97
LP		 111 void *userdata,
112 sd_bus_error *error) {
4ec9a8a4 113
d1d85471 114 Hashmap **h = userdata;
5301be81 115 Iterator j;
718db961 116 Unit *u;
eef85c4a 117 void *v;
718db961 118 int r;
5301be81 119
718db961
LP		 120 assert(bus);
121 assert(reply);
d1d85471 122 assert(h);
5301be81 123
718db961
LP		 124 r = sd_bus_message_open_container(reply, 'a', "s");
125 if (r < 0)
126 return r;
5301be81 127
d1d85471 128 HASHMAP_FOREACH_KEY(v, u, *h, j) {
718db961
LP		 129 r = sd_bus_message_append(reply, "s", u->id);
130 if (r < 0)
131 return r;
132 }
5301be81 133
718db961 134 return sd_bus_message_close_container(reply);
5301be81
LP		 135}
136
99c14018
YW		 137static int property_get_requires_mounts_for(
138 sd_bus *bus,
139 const char *path,
140 const char *interface,
141 const char *property,
142 sd_bus_message *reply,
143 void *userdata,
144 sd_bus_error *error) {
145
d1d85471 146 Hashmap **h = userdata;
99c14018 147 const char *p;
f6e11b39 148 Iterator j;
99c14018
YW		 149 void *v;
150 int r;
151
152 assert(bus);
153 assert(reply);
d1d85471 154 assert(h);
99c14018
YW		 155
156 r = sd_bus_message_open_container(reply, 'a', "s");
157 if (r < 0)
158 return r;
159
d1d85471 160 HASHMAP_FOREACH_KEY(v, p, *h, j) {
99c14018
YW		 161 r = sd_bus_message_append(reply, "s", p);
162 if (r < 0)
163 return r;
164 }
165
166 return sd_bus_message_close_container(reply);
167}
168
d2dc52db
LP		 169static int property_get_unit_file_preset(
170 sd_bus *bus,
171 const char *path,
172 const char *interface,
173 const char *property,
174 sd_bus_message *reply,
175 void *userdata,
176 sd_bus_error *error) {
177
178 Unit *u = userdata;
179 int r;
180
181 assert(bus);
182 assert(reply);
183 assert(u);
184
185 r = unit_get_unit_file_preset(u);
186
187 return sd_bus_message_append(reply, "s",
79a60375 188 r < 0 ? NULL:
d2dc52db
LP		 189 r > 0 ? "enabled" : "disabled");
190}
191
718db961
LP		 192static int property_get_job(
193 sd_bus *bus,
194 const char *path,
195 const char *interface,
196 const char *property,
197 sd_bus_message *reply,
ebcf1f97
LP		 198 void *userdata,
199 sd_bus_error *error) {
718db961 200
f93891f3 201 _cleanup_free_ char *p = NULL;
14f7edb0 202 Job **j = userdata;
38131695 203
718db961
LP		 204 assert(bus);
205 assert(reply);
14f7edb0 206 assert(j);
38131695 207
14f7edb0 208 if (!*j)
718db961 209 return sd_bus_message_append(reply, "(uo)", 0, "/");
38131695 210
14f7edb0 211 p = job_dbus_path(*j);
718db961
LP		 212 if (!p)
213 return -ENOMEM;
38131695 214
14f7edb0 215 return sd_bus_message_append(reply, "(uo)", (*j)->id, p);
718db961 216}
38131695 217
718db961
LP		 218static int property_get_conditions(
219 sd_bus *bus,
220 const char *path,
221 const char *interface,
222 const char *property,
223 sd_bus_message *reply,
ebcf1f97
LP		 224 void *userdata,
225 sd_bus_error *error) {
45fb0699 226
59fccdc5
LP		 227 const char *(*to_string)(ConditionType type) = NULL;
228 Condition **list = userdata, *c;
718db961 229 int r;
45fb0699 230
718db961
LP		 231 assert(bus);
232 assert(reply);
59fccdc5
LP		 233 assert(list);
234
235 to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
45fb0699 236
718db961
LP		 237 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
238 if (r < 0)
239 return r;
45fb0699 240
59fccdc5 241 LIST_FOREACH(conditions, c, *list) {
cc50ef13
LP		 242 int tristate;
243
244 tristate =
245 c->result == CONDITION_UNTESTED ? 0 :
246 c->result == CONDITION_SUCCEEDED ? 1 : -1;
247
2c7e050f 248 r = sd_bus_message_append(reply, "(sbbsi)",
59fccdc5 249 to_string(c->type),
2c7e050f 250 c->trigger, c->negate,
cc50ef13 251 c->parameter, tristate);
718db961
LP		 252 if (r < 0)
253 return r;
45fb0699 254
718db961 255 }
52990c2e 256
718db961 257 return sd_bus_message_close_container(reply);
52990c2e
ZJS		 258}
259
718db961
LP		 260static int property_get_load_error(
261 sd_bus *bus,
262 const char *path,
263 const char *interface,
264 const char *property,
265 sd_bus_message *reply,
ebcf1f97
LP		 266 void *userdata,
267 sd_bus_error *error) {
52990c2e 268
4afd3348 269 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
fd1e3fd8
LP		 270 Unit *u = userdata;
271 int r;
52990c2e 272
718db961
LP		 273 assert(bus);
274 assert(reply);
fd1e3fd8 275 assert(u);
52990c2e 276
fd1e3fd8
LP		 277 r = bus_unit_validate_load_state(u, &e);
278 if (r < 0)
279 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
52990c2e 280
fd1e3fd8 281 return sd_bus_message_append(reply, "(ss)", NULL, NULL);
52990c2e
ZJS		 282}
283
88ced61b
MC		 284static int bus_verify_manage_units_async_full(
285 Unit *u,
286 const char *verb,
287 int capability,
288 const char *polkit_message,
05a98afd 289 bool interactive,
88ced61b
MC		 290 sd_bus_message *call,
291 sd_bus_error *error) {
292
293 const char *details[9] = {
294 "unit", u->id,
295 "verb", verb,
296 };
297
298 if (polkit_message) {
299 details[4] = "polkit.message";
300 details[5] = polkit_message;
301 details[6] = "polkit.gettext_domain";
302 details[7] = GETTEXT_PACKAGE;
303 }
304
05a98afd
LP		 305 return bus_verify_polkit_async(
306 call,
307 capability,
308 "org.freedesktop.systemd1.manage-units",
309 details,
310 interactive,
311 UID_INVALID,
312 &u->manager->polkit_registry,
313 error);
88ced61b
MC		 314}
315
50cbaba4
LP		 316static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
317 [JOB_START] = N_("Authentication is required to start '$(unit)'."),
318 [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
319 [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
320 [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
321 [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
322};
323
1d22e906 324int bus_unit_method_start_generic(
1d22e906
LP		 325 sd_bus_message *message,
326 Unit *u,
327 JobType job_type,
328 bool reload_if_possible,
329 sd_bus_error *error) {
330
e59ba56d 331 const char *smode, *verb;
718db961
LP		 332 JobMode mode;
333 int r;
9f39404c 334
718db961 335 assert(message);
9f39404c 336 assert(u);
718db961 337 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
9f39404c 338
61ea63f1
EV		 339 r = mac_selinux_unit_access_check(
340 u, message,
94bd7323
EV		 341 job_type_to_access_method(job_type),
342 error);
1d22e906
LP		 343 if (r < 0)
344 return r;
345
718db961
LP		 346 r = sd_bus_message_read(message, "s", &smode);
347 if (r < 0)
ebcf1f97 348 return r;
9f39404c 349
718db961
LP		 350 mode = job_mode_from_string(smode);
351 if (mode < 0)
ebcf1f97 352 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
9f39404c 353
88ced61b 354 if (reload_if_possible)
e59ba56d 355 verb = strjoina("reload-or-", job_type_to_string(job_type));
88ced61b 356 else
e59ba56d 357 verb = job_type_to_string(job_type);
88ced61b
MC		 358
359 r = bus_verify_manage_units_async_full(
360 u,
361 verb,
362 CAP_SYS_ADMIN,
ebfb1b57 363 polkit_message_for_job[job_type],
05a98afd 364 true,
88ced61b
MC		 365 message,
366 error);
1d22e906
LP		 367 if (r < 0)
368 return r;
369 if (r == 0)
370 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
371
50cbaba4
LP		 372 return bus_unit_queue_job(message, u, job_type, mode,
373 reload_if_possible ? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE : 0, error);
9f39404c
LP		 374}
375
19070062
LP		 376static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
377 return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
718db961 378}
b548631a 379
19070062
LP		 380static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
381 return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
718db961
LP		 382}
383
19070062
LP		 384static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
385 return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
718db961 386}
0a524ba7 387
19070062
LP		 388static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
389 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
718db961 390}
8a0867d6 391
19070062
LP		 392static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
393 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
718db961 394}
cad45ba1 395
19070062
LP		 396static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
397 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
718db961 398}
8a0867d6 399
19070062
LP		 400static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
401 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
718db961 402}
8a0867d6 403
50cbaba4
LP		 404int bus_unit_method_enqueue_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
405 BusUnitQueueFlags flags = BUS_UNIT_QUEUE_VERBOSE_REPLY;
406 const char *jtype, *smode;
407 Unit *u = userdata;
408 JobType type;
409 JobMode mode;
410 int r;
411
412 assert(message);
413 assert(u);
414
415 r = sd_bus_message_read(message, "ss", &jtype, &smode);
416 if (r < 0)
417 return r;
418
419 /* Parse the two magic reload types "reload-or-…" manually */
420 if (streq(jtype, "reload-or-restart")) {
421 type = JOB_RESTART;
422 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
423 } else if (streq(jtype, "reload-or-try-restart")) {
424 type = JOB_TRY_RESTART;
425 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
426 } else {
427 /* And the rest generically */
428 type = job_type_from_string(jtype);
429 if (type < 0)
430 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job type %s invalid", jtype);
431 }
432
433 mode = job_mode_from_string(smode);
434 if (mode < 0)
435 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
436
437 r = mac_selinux_unit_access_check(
438 u, message,
439 job_type_to_access_method(type),
440 error);
441 if (r < 0)
442 return r;
443
444 r = bus_verify_manage_units_async_full(
445 u,
446 jtype,
447 CAP_SYS_ADMIN,
448 polkit_message_for_job[type],
449 true,
450 message,
451 error);
452 if (r < 0)
453 return r;
454 if (r == 0)
455 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
456
457 return bus_unit_queue_job(message, u, type, mode, flags, error);
458}
459
19070062 460int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 461 Unit *u = userdata;
462 const char *swho;
463 int32_t signo;
464 KillWho who;
465 int r;
5632e374 466
718db961
LP		 467 assert(message);
468 assert(u);
cad45ba1 469
1d22e906 470 r = mac_selinux_unit_access_check(u, message, "stop", error);
283868e1
SW		 471 if (r < 0)
472 return r;
283868e1 473
718db961
LP		 474 r = sd_bus_message_read(message, "si", &swho, &signo);
475 if (r < 0)
ebcf1f97 476 return r;
718db961
LP		 477
478 if (isempty(swho))
479 who = KILL_ALL;
480 else {
481 who = kill_who_from_string(swho);
482 if (who < 0)
ebcf1f97 483 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
718db961 484 }
5632e374 485
6eb7c172 486 if (!SIGNAL_VALID(signo))
ebcf1f97 487 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
8e2af478 488
88ced61b
MC		 489 r = bus_verify_manage_units_async_full(
490 u,
491 "kill",
492 CAP_KILL,
1d445eda 493 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
05a98afd 494 true,
88ced61b
MC		 495 message,
496 error);
ebcf1f97
LP		 497 if (r < 0)
498 return r;
1d22e906
LP		 499 if (r == 0)
500 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
8e2af478 501
ebcf1f97 502 r = unit_kill(u, who, signo, error);
718db961 503 if (r < 0)
ebcf1f97 504 return r;
8e2af478 505
df2d202e 506 return sd_bus_reply_method_return(message, NULL);
718db961 507}
8e2af478 508
19070062 509int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961 510 Unit *u = userdata;
ebcf1f97 511 int r;
b548631a 512
718db961
LP		 513 assert(message);
514 assert(u);
b548631a 515
1d22e906 516 r = mac_selinux_unit_access_check(u, message, "reload", error);
283868e1
SW		 517 if (r < 0)
518 return r;
283868e1 519
88ced61b
MC		 520 r = bus_verify_manage_units_async_full(
521 u,
522 "reset-failed",
523 CAP_SYS_ADMIN,
524 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
05a98afd 525 true,
88ced61b
MC		 526 message,
527 error);
ebcf1f97
LP		 528 if (r < 0)
529 return r;
1d22e906
LP		 530 if (r == 0)
531 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
b548631a 532
718db961 533 unit_reset_failed(u);
b548631a 534
df2d202e 535 return sd_bus_reply_method_return(message, NULL);
ea430986
LP		 536}
537
19070062 538int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 539 Unit *u = userdata;
540 int runtime, r;
ea430986 541
ea430986 542 assert(message);
718db961 543 assert(u);
80fbf05e 544
1d22e906 545 r = mac_selinux_unit_access_check(u, message, "start", error);
283868e1
SW		 546 if (r < 0)
547 return r;
283868e1 548
718db961
LP		 549 r = sd_bus_message_read(message, "b", &runtime);
550 if (r < 0)
ebcf1f97 551 return r;
2cccbca4 552
88ced61b
MC		 553 r = bus_verify_manage_units_async_full(
554 u,
555 "set-property",
556 CAP_SYS_ADMIN,
557 N_("Authentication is required to set properties on '$(unit)'."),
05a98afd 558 true,
88ced61b
MC		 559 message,
560 error);
ebcf1f97
LP		 561 if (r < 0)
562 return r;
1d22e906
LP		 563 if (r == 0)
564 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
cad45ba1 565
ebcf1f97 566 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
718db961 567 if (r < 0)
ebcf1f97 568 return r;
2cccbca4 569
df2d202e 570 return sd_bus_reply_method_return(message, NULL);
718db961 571}
2cccbca4 572
05a98afd
LP		 573int bus_unit_method_ref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
574 Unit *u = userdata;
575 int r;
576
577 assert(message);
578 assert(u);
579
580 r = mac_selinux_unit_access_check(u, message, "start", error);
581 if (r < 0)
582 return r;
583
584 r = bus_verify_manage_units_async_full(
585 u,
586 "ref",
587 CAP_SYS_ADMIN,
588 NULL,
589 false,
590 message,
591 error);
592 if (r < 0)
593 return r;
594 if (r == 0)
595 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
596
597 r = bus_unit_track_add_sender(u, message);
598 if (r < 0)
599 return r;
600
601 return sd_bus_reply_method_return(message, NULL);
602}
603
604int bus_unit_method_unref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
605 Unit *u = userdata;
606 int r;
607
608 assert(message);
609 assert(u);
610
611 r = bus_unit_track_remove_sender(u, message);
612 if (r == -EUNATCH)
613 return sd_bus_error_setf(error, BUS_ERROR_NOT_REFERENCED, "Unit has not been referenced yet.");
614 if (r < 0)
615 return r;
616
617 return sd_bus_reply_method_return(message, NULL);
618}
619
bedea99d
LP		 620static int property_get_refs(
621 sd_bus *bus,
622 const char *path,
623 const char *interface,
624 const char *property,
625 sd_bus_message *reply,
626 void *userdata,
627 sd_bus_error *error) {
628
629 Unit *u = userdata;
630 const char *i;
631 int r;
632
633 assert(bus);
634 assert(reply);
635
636 r = sd_bus_message_open_container(reply, 'a', "s");
637 if (r < 0)
638 return r;
639
640 for (i = sd_bus_track_first(u->bus_track); i; i = sd_bus_track_next(u->bus_track)) {
641 int c, k;
642
643 c = sd_bus_track_count_name(u->bus_track, i);
644 if (c < 0)
645 return c;
646
647 /* Add the item multiple times if the ref count for each is above 1 */
648 for (k = 0; k < c; k++) {
649 r = sd_bus_message_append(reply, "s", i);
650 if (r < 0)
651 return r;
652 }
653 }
654
655 return sd_bus_message_close_container(reply);
656}
657
718db961
LP		 658const sd_bus_vtable bus_unit_vtable[] = {
659 SD_BUS_VTABLE_START(0),
660
556089dc 661 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 662 SD_BUS_PROPERTY("Names", "as", property_get_names, offsetof(Unit, names), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 663 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
556089dc 664 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 665 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 666 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
667 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
668 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
669 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
be7d9ff7 670 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 671 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
672 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
673 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
674 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
675 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
676 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
677 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
678 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
679 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
680 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
681 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
682 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
683 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
99c14018 684 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 685 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
686 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
687 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
718db961
LP		 688 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
689 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 690 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
691 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
692 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 693 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
d2dc52db 694 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0),
a483fb59 695 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit, state_change_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961
LP		 696 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
697 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
698 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
699 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 700 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
701 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
702 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
703 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 704 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, offsetof(Unit, job), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 705 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
706 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
707 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
708 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
709 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
710 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
711 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 712 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
713 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
a2df3ea4 714 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_running_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 715 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
f189ab18 716 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 717 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 718 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 719 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 720 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
e18f8852
LP		 721 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
722 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
fd1e3fd8 723 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 724 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
f5869324 725 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool, offsetof(Unit, perpetual), SD_BUS_VTABLE_PROPERTY_CONST),
c075f5fc 726 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
6bf0f408 727 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 728 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
53c35a76 729 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 730 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int, offsetof(Unit, failure_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
e7dfbb4e 731 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action, offsetof(Unit, success_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 732 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int, offsetof(Unit, success_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
6bf0f408 733 SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
af92c603 734 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
641e0d7a 735 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), SD_BUS_VTABLE_PROPERTY_CONST),
bedea99d 736 SD_BUS_PROPERTY("Refs", "as", property_get_refs, 0, 0),
718db961 737
1d22e906
LP		 738 SD_BUS_METHOD("Start", "s", "o", method_start, SD_BUS_VTABLE_UNPRIVILEGED),
739 SD_BUS_METHOD("Stop", "s", "o", method_stop, SD_BUS_VTABLE_UNPRIVILEGED),
740 SD_BUS_METHOD("Reload", "s", "o", method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
741 SD_BUS_METHOD("Restart", "s", "o", method_restart, SD_BUS_VTABLE_UNPRIVILEGED),
742 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, SD_BUS_VTABLE_UNPRIVILEGED),
743 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, SD_BUS_VTABLE_UNPRIVILEGED),
744 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, SD_BUS_VTABLE_UNPRIVILEGED),
50cbaba4 745 SD_BUS_METHOD("EnqueueJob", "ss", "uososa(uosos)", bus_unit_method_enqueue_job, SD_BUS_VTABLE_UNPRIVILEGED),
1d22e906
LP		 746 SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
747 SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
748 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, SD_BUS_VTABLE_UNPRIVILEGED),
05a98afd
LP		 749 SD_BUS_METHOD("Ref", NULL, NULL, bus_unit_method_ref, SD_BUS_VTABLE_UNPRIVILEGED),
750 SD_BUS_METHOD("Unref", NULL, NULL, bus_unit_method_unref, SD_BUS_VTABLE_UNPRIVILEGED),
718db961 751
92c23c5a
YW		 752 /* For dependency types we don't support anymore always return an empty array */
753 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
754 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
755 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
756 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
757 /* Obsolete alias names */
51d73fd9 758 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
c075f5fc 759 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
718db961
LP		 760 SD_BUS_VTABLE_END
761};
2cccbca4 762
718db961
LP		 763static int property_get_slice(
764 sd_bus *bus,
765 const char *path,
766 const char *interface,
767 const char *property,
768 sd_bus_message *reply,
ebcf1f97
LP		 769 void *userdata,
770 sd_bus_error *error) {
2cccbca4 771
718db961 772 Unit *u = userdata;
2cccbca4 773
718db961
LP		 774 assert(bus);
775 assert(reply);
776 assert(u);
2cccbca4 777
718db961
LP		 778 return sd_bus_message_append(reply, "s", unit_slice_name(u));
779}
2cccbca4 780
934277fe
LP		 781static int property_get_current_memory(
782 sd_bus *bus,
783 const char *path,
784 const char *interface,
785 const char *property,
786 sd_bus_message *reply,
787 void *userdata,
788 sd_bus_error *error) {
789
934277fe 790 uint64_t sz = (uint64_t) -1;
5ad096b3 791 Unit *u = userdata;
934277fe
LP		 792 int r;
793
794 assert(bus);
795 assert(reply);
796 assert(u);
797
5ad096b3
LP		 798 r = unit_get_memory_current(u, &sz);
799 if (r < 0 && r != -ENODATA)
f2341e0a 800 log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m");
934277fe 801
5ad096b3
LP		 802 return sd_bus_message_append(reply, "t", sz);
803}
934277fe 804
03a7b521
LP		 805static int property_get_current_tasks(
806 sd_bus *bus,
807 const char *path,
808 const char *interface,
809 const char *property,
810 sd_bus_message *reply,
811 void *userdata,
812 sd_bus_error *error) {
813
814 uint64_t cn = (uint64_t) -1;
815 Unit *u = userdata;
816 int r;
817
818 assert(bus);
819 assert(reply);
820 assert(u);
821
822 r = unit_get_tasks_current(u, &cn);
823 if (r < 0 && r != -ENODATA)
824 log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m");
825
826 return sd_bus_message_append(reply, "t", cn);
827}
828
5ad096b3
LP		 829static int property_get_cpu_usage(
830 sd_bus *bus,
831 const char *path,
832 const char *interface,
833 const char *property,
834 sd_bus_message *reply,
835 void *userdata,
836 sd_bus_error *error) {
934277fe 837
5ad096b3
LP		 838 nsec_t ns = (nsec_t) -1;
839 Unit *u = userdata;
840 int r;
841
842 assert(bus);
843 assert(reply);
844 assert(u);
845
846 r = unit_get_cpu_usage(u, &ns);
847 if (r < 0 && r != -ENODATA)
f2341e0a 848 log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m");
5ad096b3
LP		 849
850 return sd_bus_message_append(reply, "t", ns);
934277fe
LP		 851}
852
98bac605
LP		 853static int property_get_cgroup(
854 sd_bus *bus,
855 const char *path,
856 const char *interface,
857 const char *property,
858 sd_bus_message *reply,
859 void *userdata,
860 sd_bus_error *error) {
861
862 Unit *u = userdata;
79a60375 863 const char *t = NULL;
98bac605
LP		 864
865 assert(bus);
866 assert(reply);
867 assert(u);
868
869 /* Three cases: a) u->cgroup_path is NULL, in which case the
870 * unit has no control group, which we report as the empty
871 * string. b) u->cgroup_path is the empty string, which
872 * indicates the root cgroup, which we report as "/". c) all
873 * other cases we report as-is. */
874
875 if (u->cgroup_path)
945403e6 876 t = empty_to_root(u->cgroup_path);
98bac605
LP		 877
878 return sd_bus_message_append(reply, "s", t);
879}
880
291d565a
LP		 881static int append_process(sd_bus_message *reply, const char *p, pid_t pid, Set *pids) {
882 _cleanup_free_ char *buf = NULL, *cmdline = NULL;
883 int r;
884
885 assert(reply);
886 assert(pid > 0);
887
888 r = set_put(pids, PID_TO_PTR(pid));
4c701096 889 if (IN_SET(r, 0, -EEXIST))
291d565a
LP		 890 return 0;
891 if (r < 0)
892 return r;
893
894 if (!p) {
895 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &buf);
896 if (r == -ESRCH)
897 return 0;
898 if (r < 0)
899 return r;
900
901 p = buf;
902 }
903
09c1dcee 904 (void) get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &cmdline);
291d565a
LP		 905
906 return sd_bus_message_append(reply,
907 "(sus)",
908 p,
909 (uint32_t) pid,
910 cmdline);
911}
912
913static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
914 _cleanup_closedir_ DIR *d = NULL;
915 _cleanup_fclose_ FILE *f = NULL;
916 int r;
917
918 assert(reply);
919 assert(p);
920
921 r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, p, &f);
24715314 922 if (r == -ENOENT)
291d565a
LP		 923 return 0;
924 if (r < 0)
925 return r;
926
927 for (;;) {
928 pid_t pid;
929
930 r = cg_read_pid(f, &pid);
931 if (r < 0)
932 return r;
933 if (r == 0)
934 break;
935
936 if (is_kernel_thread(pid) > 0)
937 continue;
938
939 r = append_process(reply, p, pid, pids);
940 if (r < 0)
941 return r;
942 }
943
944 r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, p, &d);
945 if (r == -ENOENT)
946 return 0;
947 if (r < 0)
948 return r;
949
950 for (;;) {
951 _cleanup_free_ char *g = NULL, *j = NULL;
952
953 r = cg_read_subgroup(d, &g);
954 if (r < 0)
955 return r;
956 if (r == 0)
957 break;
958
605405c6 959 j = strjoin(p, "/", g);
291d565a
LP		 960 if (!j)
961 return -ENOMEM;
962
963 r = append_cgroup(reply, j, pids);
964 if (r < 0)
965 return r;
966 }
967
968 return 0;
969}
970
971int bus_unit_method_get_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
972 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
af4fa99d 973 _cleanup_set_free_ Set *pids = NULL;
291d565a
LP		 974 Unit *u = userdata;
975 pid_t pid;
976 int r;
977
978 assert(message);
979
807fa5d9
LP		 980 r = mac_selinux_unit_access_check(u, message, "status", error);
981 if (r < 0)
982 return r;
983
291d565a
LP		 984 pids = set_new(NULL);
985 if (!pids)
986 return -ENOMEM;
987
988 r = sd_bus_message_new_method_return(message, &reply);
989 if (r < 0)
990 return r;
991
992 r = sd_bus_message_open_container(reply, 'a', "(sus)");
993 if (r < 0)
994 return r;
995
996 if (u->cgroup_path) {
997 r = append_cgroup(reply, u->cgroup_path, pids);
998 if (r < 0)
999 return r;
1000 }
1001
1002 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1003 pid = unit_main_pid(u);
1004 if (pid > 0) {
1005 r = append_process(reply, NULL, pid, pids);
1006 if (r < 0)
1007 return r;
1008 }
1009
1010 pid = unit_control_pid(u);
1011 if (pid > 0) {
1012 r = append_process(reply, NULL, pid, pids);
1013 if (r < 0)
1014 return r;
1015 }
1016
1017 r = sd_bus_message_close_container(reply);
1018 if (r < 0)
1019 return r;
1020
1021 return sd_bus_send(NULL, reply, NULL);
1022}
1023
906c06f6
DM		 1024static int property_get_ip_counter(
1025 sd_bus *bus,
1026 const char *path,
1027 const char *interface,
1028 const char *property,
1029 sd_bus_message *reply,
1030 void *userdata,
1031 sd_bus_error *error) {
1032
83f18c91
LP		 1033 static const char *const table[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = {
1034 [CGROUP_IP_INGRESS_BYTES] = "IPIngressBytes",
1035 [CGROUP_IP_EGRESS_BYTES] = "IPEgressBytes",
1036 [CGROUP_IP_INGRESS_PACKETS] = "IPIngressPackets",
1037 [CGROUP_IP_EGRESS_PACKETS] = "IPEgressPackets",
1038 };
1039
1040 uint64_t value = UINT64_MAX;
906c06f6 1041 Unit *u = userdata;
83f18c91 1042 ssize_t metric;
906c06f6
DM		 1043
1044 assert(bus);
1045 assert(reply);
1046 assert(property);
1047 assert(u);
1048
83f18c91 1049 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
906c06f6
DM		 1050 (void) unit_get_ip_accounting(u, metric, &value);
1051 return sd_bus_message_append(reply, "t", value);
1052}
1053
fbe14fc9
LP		 1054static int property_get_io_counter(
1055 sd_bus *bus,
1056 const char *path,
1057 const char *interface,
1058 const char *property,
1059 sd_bus_message *reply,
1060 void *userdata,
1061 sd_bus_error *error) {
1062
1063 static const char *const table[_CGROUP_IO_ACCOUNTING_METRIC_MAX] = {
1064 [CGROUP_IO_READ_BYTES] = "IOReadBytes",
1065 [CGROUP_IO_WRITE_BYTES] = "IOWriteBytes",
1066 [CGROUP_IO_READ_OPERATIONS] = "IOReadOperations",
1067 [CGROUP_IO_WRITE_OPERATIONS] = "IOWriteOperations",
1068 };
1069
1070 uint64_t value = UINT64_MAX;
1071 Unit *u = userdata;
1072 ssize_t metric;
1073
1074 assert(bus);
1075 assert(reply);
1076 assert(property);
1077 assert(u);
1078
1079 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
1080 (void) unit_get_io_accounting(u, metric, false, &value);
1081 return sd_bus_message_append(reply, "t", value);
1082}
1083
6592b975
LP		 1084int bus_unit_method_attach_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1085
1086 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
af4fa99d 1087 _cleanup_set_free_ Set *pids = NULL;
6592b975
LP		 1088 Unit *u = userdata;
1089 const char *path;
1090 int r;
1091
1092 assert(message);
1093
1094 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1095 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1096 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1097 * subcgroup path has no effect! */
1098
1099 r = mac_selinux_unit_access_check(u, message, "start", error);
1100 if (r < 0)
1101 return r;
1102
1103 r = sd_bus_message_read(message, "s", &path);
1104 if (r < 0)
1105 return r;
1106
1107 path = empty_to_null(path);
1108 if (path) {
1109 if (!path_is_absolute(path))
1110 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not absolute: %s", path);
1111
1112 if (!path_is_normalized(path))
1113 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not normalized: %s", path);
1114 }
1115
1116 if (!unit_cgroup_delegate(u))
1117 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Process migration not available on non-delegated units.");
1118
1119 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)))
1120 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit is not active, refusing.");
1121
1122 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
1123 if (r < 0)
1124 return r;
1125
1126 r = sd_bus_message_enter_container(message, 'a', "u");
1127 if (r < 0)
1128 return r;
1129 for (;;) {
1130 uid_t process_uid, sender_uid;
1131 uint32_t upid;
1132 pid_t pid;
1133
1134 r = sd_bus_message_read(message, "u", &upid);
1135 if (r < 0)
1136 return r;
1137 if (r == 0)
1138 break;
1139
1140 if (upid == 0) {
1141 r = sd_bus_creds_get_pid(creds, &pid);
1142 if (r < 0)
1143 return r;
1144 } else
1145 pid = (uid_t) upid;
1146
1147 /* Filter out duplicates */
1148 if (set_contains(pids, PID_TO_PTR(pid)))
1149 continue;
1150
1151 /* Check if this process is suitable for attaching to this unit */
1152 r = unit_pid_attachable(u, pid, error);
1153 if (r < 0)
1154 return r;
1155
1156 /* Let's query the sender's UID, so that we can make our security decisions */
1157 r = sd_bus_creds_get_euid(creds, &sender_uid);
1158 if (r < 0)
1159 return r;
1160
874b5ad2 1161 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
6592b975
LP		 1162 * then the process' UID and the target unit's UID have to match the sender's UID */
1163 if (sender_uid != 0 && sender_uid != getuid()) {
1164 r = get_process_uid(pid, &process_uid);
1165 if (r < 0)
1166 return sd_bus_error_set_errnof(error, r, "Failed to retrieve process UID: %m");
1167
1168 if (process_uid != sender_uid)
1169 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by client's UID. Refusing.", pid);
1170 if (process_uid != u->ref_uid)
1171 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by target unit's UID. Refusing.", pid);
1172 }
1173
1174 if (!pids) {
1175 pids = set_new(NULL);
1176 if (!pids)
1177 return -ENOMEM;
1178 }
1179
1180 r = set_put(pids, PID_TO_PTR(pid));
1181 if (r < 0)
1182 return r;
1183 }
1184
1185 r = sd_bus_message_exit_container(message);
1186 if (r < 0)
1187 return r;
1188
1189 r = unit_attach_pids_to_cgroup(u, pids, path);
1190 if (r < 0)
1191 return sd_bus_error_set_errnof(error, r, "Failed to attach processes to control group: %m");
1192
1193 return sd_bus_reply_method_return(message, NULL);
1194}
1195
718db961
LP		 1196const sd_bus_vtable bus_unit_cgroup_vtable[] = {
1197 SD_BUS_VTABLE_START(0),
1198 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
98bac605 1199 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0),
934277fe 1200 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
5ad096b3 1201 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0),
03a7b521 1202 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0),
906c06f6
DM		 1203 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter, 0, 0),
1204 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter, 0, 0),
1205 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter, 0, 0),
1206 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter, 0, 0),
fbe14fc9
LP		 1207 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter, 0, 0),
1208 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter, 0, 0),
1209 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter, 0, 0),
1210 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter, 0, 0),
291d565a 1211 SD_BUS_METHOD("GetProcesses", NULL, "a(sus)", bus_unit_method_get_processes, SD_BUS_VTABLE_UNPRIVILEGED),
6592b975 1212 SD_BUS_METHOD("AttachProcesses", "sau", NULL, bus_unit_method_attach_processes, SD_BUS_VTABLE_UNPRIVILEGED),
718db961
LP		 1213 SD_BUS_VTABLE_END
1214};
2cccbca4 1215
8f8f05a9 1216static int send_new_signal(sd_bus *bus, void *userdata) {
4afd3348 1217 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1218 _cleanup_free_ char *p = NULL;
1219 Unit *u = userdata;
1220 int r;
2cccbca4 1221
718db961
LP		 1222 assert(bus);
1223 assert(u);
2cccbca4 1224
718db961 1225 p = unit_dbus_path(u);
e861098b 1226 if (!p)
718db961 1227 return -ENOMEM;
2cccbca4 1228
718db961
LP		 1229 r = sd_bus_message_new_signal(
1230 bus,
151b9b96 1231 &m,
718db961
LP		 1232 "/org/freedesktop/systemd1",
1233 "org.freedesktop.systemd1.Manager",
151b9b96 1234 "UnitNew");
718db961
LP		 1235 if (r < 0)
1236 return r;
2cccbca4 1237
718db961
LP		 1238 r = sd_bus_message_append(m, "so", u->id, p);
1239 if (r < 0)
1240 return r;
2cccbca4 1241
8f8f05a9 1242 return sd_bus_send(bus, m, NULL);
718db961 1243}
2cccbca4 1244
8f8f05a9 1245static int send_changed_signal(sd_bus *bus, void *userdata) {
718db961
LP		 1246 _cleanup_free_ char *p = NULL;
1247 Unit *u = userdata;
1248 int r;
2cccbca4 1249
718db961
LP		 1250 assert(bus);
1251 assert(u);
2cccbca4 1252
718db961 1253 p = unit_dbus_path(u);
9ceefc81 1254 if (!p)
718db961 1255 return -ENOMEM;
2cccbca4 1256
718db961
LP		 1257 /* Send a properties changed signal. First for the specific
1258 * type, then for the generic unit. The clients may rely on
1259 * this order to get atomic behavior if needed. */
ea430986 1260
aec8de63
LP		 1261 r = sd_bus_emit_properties_changed_strv(
1262 bus, p,
21b735e7 1263 unit_dbus_interface_from_type(u->type),
aec8de63 1264 NULL);
fe7f06f1 1265 if (r < 0)
aec8de63 1266 return r;
80fbf05e 1267
fe7f06f1 1268 return sd_bus_emit_properties_changed_strv(
718db961
LP		 1269 bus, p,
1270 "org.freedesktop.systemd1.Unit",
718db961 1271 NULL);
ea430986
LP		 1272}
1273
c1e1601e 1274void bus_unit_send_change_signal(Unit *u) {
b170dd80 1275 int r;
c1e1601e 1276 assert(u);
c1e1601e 1277
ac155bb8 1278 if (u->in_dbus_queue) {
71fda00f 1279 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
ac155bb8 1280 u->in_dbus_queue = false;
c0bd0cf7 1281 }
c1e1601e 1282
ac155bb8 1283 if (!u->id)
04ade7d2
LP		 1284 return;
1285
ae572acd 1286 r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
718db961 1287 if (r < 0)
f2341e0a 1288 log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
c1e1601e 1289
718db961
LP		 1290 u->sent_dbus_new_signal = true;
1291}
c4e2ceae 1292
6fcbec6f
LP		 1293void bus_unit_send_pending_change_signal(Unit *u, bool including_new) {
1294
1295 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1296 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1297 * so that clients can follow the full state transition */
1298
1299 if (!u->in_dbus_queue) /* If not enqueued, don't bother */
1300 return;
1301
1302 if (!u->sent_dbus_new_signal && !including_new) /* If the unit was never announced, don't bother, it's fine if
1303 * the unit appears in the new state right-away (except if the
1304 * caller explicitly asked us to send it anyway) */
1305 return;
1306
1307 if (MANAGER_IS_RELOADING(u->manager)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1308 * when we are reloading. */
1309 return;
1310
1311 bus_unit_send_change_signal(u);
1312}
1313
8f8f05a9 1314static int send_removed_signal(sd_bus *bus, void *userdata) {
4afd3348 1315 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1316 _cleanup_free_ char *p = NULL;
1317 Unit *u = userdata;
1318 int r;
c4e2ceae 1319
718db961
LP		 1320 assert(bus);
1321 assert(u);
c1e1601e 1322
718db961 1323 p = unit_dbus_path(u);
e861098b 1324 if (!p)
718db961 1325 return -ENOMEM;
c1e1601e 1326
718db961
LP		 1327 r = sd_bus_message_new_signal(
1328 bus,
151b9b96 1329 &m,
718db961
LP		 1330 "/org/freedesktop/systemd1",
1331 "org.freedesktop.systemd1.Manager",
151b9b96 1332 "UnitRemoved");
718db961
LP		 1333 if (r < 0)
1334 return r;
c1e1601e 1335
718db961
LP		 1336 r = sd_bus_message_append(m, "so", u->id, p);
1337 if (r < 0)
1338 return r;
c1e1601e 1339
8f8f05a9 1340 return sd_bus_send(bus, m, NULL);
c1e1601e
LP		 1341}
1342
1343void bus_unit_send_removed_signal(Unit *u) {
718db961 1344 int r;
c1e1601e
LP		 1345 assert(u);
1346
0dd99f86 1347 if (!u->sent_dbus_new_signal || u->in_dbus_queue)
7535cc78
LP		 1348 bus_unit_send_change_signal(u);
1349
ac155bb8 1350 if (!u->id)
04ade7d2
LP		 1351 return;
1352
ae572acd 1353 r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u);
718db961 1354 if (r < 0)
f2341e0a 1355 log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
c1e1601e 1356}
e2110e5d 1357
718db961 1358int bus_unit_queue_job(
718db961 1359 sd_bus_message *message,
cad45ba1
LP		 1360 Unit *u,
1361 JobType type,
1362 JobMode mode,
50cbaba4 1363 BusUnitQueueFlags flags,
ebcf1f97 1364 sd_bus_error *error) {
cad45ba1 1365
50cbaba4
LP		 1366 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1367 _cleanup_free_ char *job_path = NULL, *unit_path = NULL;
1368 _cleanup_(set_freep) Set *affected = NULL;
1369 Iterator i;
1370 Job *j, *a;
cad45ba1
LP		 1371 int r;
1372
cad45ba1
LP		 1373 assert(message);
1374 assert(u);
1375 assert(type >= 0 && type < _JOB_TYPE_MAX);
1376 assert(mode >= 0 && mode < _JOB_MODE_MAX);
1377
f596e00f
EV		 1378 r = mac_selinux_unit_access_check(
1379 u, message,
1380 job_type_to_access_method(type),
1381 error);
1382 if (r < 0)
1383 return r;
1384
50cbaba4 1385 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE) && unit_can_reload(u)) {
cad45ba1
LP		 1386 if (type == JOB_RESTART)
1387 type = JOB_RELOAD_OR_START;
1388 else if (type == JOB_TRY_RESTART)
3282591d 1389 type = JOB_TRY_RELOAD;
cad45ba1
LP		 1390 }
1391
718db961 1392 if (type == JOB_STOP &&
c4555ad8 1393 IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_ERROR, UNIT_BAD_SETTING) &&
718db961 1394 unit_active_state(u) == UNIT_INACTIVE)
ebcf1f97 1395 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
cad45ba1
LP		 1396
1397 if ((type == JOB_START && u->refuse_manual_start) ||
1398 (type == JOB_STOP && u->refuse_manual_stop) ||
3742095b 1399 (IN_SET(type, JOB_RESTART, JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)) ||
efb30ba1 1400 (type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start))
7e974e85 1401 return sd_bus_error_setf(error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only (it is configured to refuse manual start/stop).", u->id);
cad45ba1 1402
50cbaba4
LP		 1403 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY)) {
1404 affected = set_new(NULL);
1405 if (!affected)
1406 return -ENOMEM;
1407 }
1408
1409 r = manager_add_job(u->manager, type, u, mode, affected, error, &j);
cad45ba1 1410 if (r < 0)
ebcf1f97 1411 return r;
cad45ba1 1412
c5a97ed1
LP		 1413 r = bus_job_track_sender(j, message);
1414 if (r < 0)
1415 return r;
cad45ba1 1416
13142276
LP		 1417 /* Before we send the method reply, force out the announcement JobNew for this job */
1418 bus_job_send_pending_change_signal(j, true);
1419
50cbaba4
LP		 1420 job_path = job_dbus_path(j);
1421 if (!job_path)
1422 return -ENOMEM;
1423
1424 /* The classic response is just a job object path */
1425 if (!FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY))
1426 return sd_bus_reply_method_return(message, "o", job_path);
1427
1428 /* In verbose mode respond with the anchor job plus everything that has been affected */
1429 r = sd_bus_message_new_method_return(message, &reply);
1430 if (r < 0)
1431 return r;
1432
1433 unit_path = unit_dbus_path(j->unit);
1434 if (!unit_path)
1435 return -ENOMEM;
1436
1437 r = sd_bus_message_append(reply, "uosos",
1438 j->id, job_path,
1439 j->unit->id, unit_path,
1440 job_type_to_string(j->type));
1441 if (r < 0)
1442 return r;
1443
1444 r = sd_bus_message_open_container(reply, 'a', "(uosos)");
1445 if (r < 0)
1446 return r;
1447
1448 SET_FOREACH(a, affected, i) {
1449
1450 if (a->id == j->id)
1451 continue;
1452
1453 /* Free paths from previous iteration */
1454 job_path = mfree(job_path);
1455 unit_path = mfree(unit_path);
1456
1457 job_path = job_dbus_path(a);
1458 if (!job_path)
1459 return -ENOMEM;
1460
1461 unit_path = unit_dbus_path(a->unit);
1462 if (!unit_path)
1463 return -ENOMEM;
1464
1465 r = sd_bus_message_append(reply, "(uosos)",
1466 a->id, job_path,
1467 a->unit->id, unit_path,
1468 job_type_to_string(a->type));
1469 if (r < 0)
1470 return r;
1471 }
1472
1473 r = sd_bus_message_close_container(reply);
1474 if (r < 0)
1475 return r;
1476
1477 return sd_bus_send(NULL, reply, NULL);
cad45ba1
LP		 1478}
1479
721060d4 1480static int bus_unit_set_live_property(
9f2e86af
LP		 1481 Unit *u,
1482 const char *name,
718db961 1483 sd_bus_message *message,
2e59b241 1484 UnitWriteFlags flags,
718db961 1485 sd_bus_error *error) {
9f2e86af
LP		 1486
1487 int r;
1488
1489 assert(u);
1490 assert(name);
718db961 1491 assert(message);
9f2e86af 1492
721060d4
LP		 1493 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for transient
1494 * units that are being created). */
1495
9f2e86af 1496 if (streq(name, "Description")) {
718db961 1497 const char *d;
9f2e86af 1498
718db961
LP		 1499 r = sd_bus_message_read(message, "s", &d);
1500 if (r < 0)
1501 return r;
8aec412f 1502
2e59b241 1503 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
718db961 1504 r = unit_set_description(u, d);
8aec412f
LP		 1505 if (r < 0)
1506 return r;
b9316fb0 1507
2e59b241 1508 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Description=%s", d);
8aec412f 1509 }
9f2e86af
LP		 1510
1511 return 1;
721060d4
LP		 1512 }
1513
1514 return 0;
1515}
1516
54fcb619
ZJS		 1517static int bus_set_transient_emergency_action(
1518 Unit *u,
1519 const char *name,
1520 EmergencyAction *p,
1521 sd_bus_message *message,
1522 UnitWriteFlags flags,
1523 sd_bus_error *error) {
1524
1525 const char *s;
1526 EmergencyAction v;
1527 int r;
1528 bool system;
1529
1530 assert(p);
1531
1532 r = sd_bus_message_read(message, "s", &s);
1533 if (r < 0)
1534 return r;
1535
1536 system = MANAGER_IS_SYSTEM(u->manager);
1537 r = parse_emergency_action(s, system, &v);
db2df550 1538 if (r < 0)
54fcb619 1539 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
119f0f28 1540 r == -EOPNOTSUPP ? "%s setting invalid for manager type: %s"
54fcb619
ZJS		 1541 : "Invalid %s setting: %s",
1542 name, s);
1543
1544 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1545 *p = v;
1546 unit_write_settingf(u, flags, name,
1547 "%s=%s", name, s);
1548 }
1549
1550 return 1;
1551}
1552
7af67e9a
LP		 1553static int bus_set_transient_exit_status(
1554 Unit *u,
1555 const char *name,
1556 int *p,
1557 sd_bus_message *message,
1558 UnitWriteFlags flags,
1559 sd_bus_error *error) {
1560
1561 int32_t k;
1562 int r;
1563
1564 assert(p);
1565
1566 r = sd_bus_message_read(message, "i", &k);
1567 if (r < 0)
1568 return r;
1569
1570 if (k > 255)
1571 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Exit status must be in range 0…255 or negative.");
1572
1573 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1574 *p = k < 0 ? -1 : k;
1575
1576 if (k < 0)
1577 unit_write_settingf(u, flags, name, "%s=", name);
1578 else
1579 unit_write_settingf(u, flags, name, "%s=%i", name, k);
1580 }
1581
1582 return 1;
1583}
1584
faa781cf 1585static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode, CollectMode, collect_mode_from_string);
faa781cf
YW		 1586static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode, JobMode, job_mode_from_string);
1587
1588static int bus_set_transient_conditions(
1589 Unit *u,
1590 const char *name,
1591 Condition **list,
1592 bool is_condition,
1593 sd_bus_message *message,
1594 UnitWriteFlags flags,
1595 sd_bus_error *error) {
1596
1597 const char *type_name, *param;
1598 int trigger, negate, r;
1599 bool empty = true;
1600
1601 assert(list);
1602
1603 r = sd_bus_message_enter_container(message, 'a', "(sbbs)");
1604 if (r < 0)
1605 return r;
1606
1607 while ((r = sd_bus_message_read(message, "(sbbs)", &type_name, &trigger, &negate, &param)) > 0) {
1608 ConditionType t;
1609
1610 t = is_condition ? condition_type_from_string(type_name) : assert_type_from_string(type_name);
1611 if (t < 0)
1612 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid condition type: %s", type_name);
1613
1614 if (t != CONDITION_NULL) {
1615 if (isempty(param))
1616 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Condition parameter in %s is empty", type_name);
1617
1618 if (condition_takes_path(t) && !path_is_absolute(param))
1619 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in condition %s is not absolute: %s", type_name, param);
1620 } else
1621 param = NULL;
1622
1623 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1624 Condition *c;
1625
1626 c = condition_new(t, param, trigger, negate);
1627 if (!c)
1628 return -ENOMEM;
1629
1630 LIST_PREPEND(conditions, *list, c);
1631
1632 if (t != CONDITION_NULL)
1633 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name,
1634 "%s=%s%s%s", type_name,
1635 trigger ? "|" : "", negate ? "!" : "", param);
1636 else
1637 unit_write_settingf(u, flags, name,
1638 "%s=%s%s", type_name,
1639 trigger ? "|" : "", yes_no(!negate));
1640 }
1641
1642 empty = false;
1643 }
1644 if (r < 0)
1645 return r;
1646
1647 r = sd_bus_message_exit_container(message);
1648 if (r < 0)
1649 return r;
1650
1651 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
1652 *list = condition_free_list(*list);
1653 unit_write_settingf(u, flags, name, "%sNull=", is_condition ? "Condition" : "Assert");
1654 }
1655
1656 return 1;
1657}
1658
721060d4
LP		 1659static int bus_unit_set_transient_property(
1660 Unit *u,
1661 const char *name,
1662 sd_bus_message *message,
1663 UnitWriteFlags flags,
1664 sd_bus_error *error) {
1665
faa781cf 1666 UnitDependency d = _UNIT_DEPENDENCY_INVALID;
721060d4 1667 int r;
261420ba 1668
721060d4
LP		 1669 assert(u);
1670 assert(name);
1671 assert(message);
1672
1673 /* Handles settings when transient units are created. This settings cannot be altered anymore after the unit
1674 * has been created. */
1675
faa781cf
YW		 1676 if (streq(name, "SourcePath"))
1677 return bus_set_transient_path(u, name, &u->source_path, message, flags, error);
261420ba 1678
faa781cf
YW		 1679 if (streq(name, "StopWhenUnneeded"))
1680 return bus_set_transient_bool(u, name, &u->stop_when_unneeded, message, flags, error);
261420ba 1681
faa781cf
YW		 1682 if (streq(name, "RefuseManualStart"))
1683 return bus_set_transient_bool(u, name, &u->refuse_manual_start, message, flags, error);
261420ba 1684
faa781cf
YW		 1685 if (streq(name, "RefuseManualStop"))
1686 return bus_set_transient_bool(u, name, &u->refuse_manual_stop, message, flags, error);
c221420b 1687
faa781cf
YW		 1688 if (streq(name, "AllowIsolate"))
1689 return bus_set_transient_bool(u, name, &u->allow_isolate, message, flags, error);
5afe510c 1690
faa781cf
YW		 1691 if (streq(name, "DefaultDependencies"))
1692 return bus_set_transient_bool(u, name, &u->default_dependencies, message, flags, error);
1693
1694 if (streq(name, "OnFailureJobMode"))
1695 return bus_set_transient_job_mode(u, name, &u->on_failure_job_mode, message, flags, error);
1696
1697 if (streq(name, "IgnoreOnIsolate"))
1698 return bus_set_transient_bool(u, name, &u->ignore_on_isolate, message, flags, error);
1699
1700 if (streq(name, "JobTimeoutUSec")) {
1701 r = bus_set_transient_usec_fix_0(u, name, &u->job_timeout, message, flags, error);
1702 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags) && !u->job_running_timeout_set)
1703 u->job_running_timeout = u->job_timeout;
1704 }
1705
1706 if (streq(name, "JobRunningTimeoutUSec")) {
1707 r = bus_set_transient_usec_fix_0(u, name, &u->job_running_timeout, message, flags, error);
1708 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
1709 u->job_running_timeout_set = true;
1710
1711 return r;
1712 }
1713
1714 if (streq(name, "JobTimeoutAction"))
1715 return bus_set_transient_emergency_action(u, name, &u->job_timeout_action, message, flags, error);
1716
1717 if (streq(name, "JobTimeoutRebootArgument"))
1718 return bus_set_transient_string(u, name, &u->job_timeout_reboot_arg, message, flags, error);
1719
1720 if (streq(name, "StartLimitIntervalUSec"))
1721 return bus_set_transient_usec(u, name, &u->start_limit.interval, message, flags, error);
1722
1723 if (streq(name, "StartLimitBurst"))
1724 return bus_set_transient_unsigned(u, name, &u->start_limit.burst, message, flags, error);
1725
1726 if (streq(name, "StartLimitAction"))
1727 return bus_set_transient_emergency_action(u, name, &u->start_limit_action, message, flags, error);
1728
1729 if (streq(name, "FailureAction"))
1730 return bus_set_transient_emergency_action(u, name, &u->failure_action, message, flags, error);
1731
1732 if (streq(name, "SuccessAction"))
1733 return bus_set_transient_emergency_action(u, name, &u->success_action, message, flags, error);
1734
7af67e9a
LP		 1735 if (streq(name, "FailureActionExitStatus"))
1736 return bus_set_transient_exit_status(u, name, &u->failure_action_exit_status, message, flags, error);
1737
1738 if (streq(name, "SuccessActionExitStatus"))
1739 return bus_set_transient_exit_status(u, name, &u->success_action_exit_status, message, flags, error);
1740
faa781cf
YW		 1741 if (streq(name, "RebootArgument"))
1742 return bus_set_transient_string(u, name, &u->reboot_arg, message, flags, error);
1743
1744 if (streq(name, "CollectMode"))
1745 return bus_set_transient_collect_mode(u, name, &u->collect_mode, message, flags, error);
1746
1747 if (streq(name, "Conditions"))
1748 return bus_set_transient_conditions(u, name, &u->conditions, true, message, flags, error);
1749
1750 if (streq(name, "Asserts"))
1751 return bus_set_transient_conditions(u, name, &u->asserts, false, message, flags, error);
1752
1753 if (streq(name, "Documentation")) {
1754 _cleanup_strv_free_ char **l = NULL;
1755 char **p;
1756
1757 r = sd_bus_message_read_strv(message, &l);
5afe510c
LP		 1758 if (r < 0)
1759 return r;
1760
faa781cf
YW		 1761 STRV_FOREACH(p, l) {
1762 if (!documentation_url_is_valid(*p))
1763 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid URL in %s: %s", name, *p);
1764 }
5afe510c 1765
2e59b241 1766 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
faa781cf
YW		 1767 if (strv_isempty(l)) {
1768 u->documentation = strv_free(u->documentation);
1769 unit_write_settingf(u, flags, name, "%s=", name);
1770 } else {
1771 strv_extend_strv(&u->documentation, l, false);
1772
1773 STRV_FOREACH(p, l)
1774 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
1775 }
5afe510c
LP		 1776 }
1777
1778 return 1;
1779
d79200e2
LP		 1780 } else if (streq(name, "Slice")) {
1781 Unit *slice;
c221420b 1782 const char *s;
c221420b 1783
d79200e2
LP		 1784 if (!UNIT_HAS_CGROUP_CONTEXT(u))
1785 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
1786 if (u->type == UNIT_SLICE)
1787 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
efdb0237
LP		 1788 if (unit_has_name(u, SPECIAL_INIT_SCOPE))
1789 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope");
d79200e2 1790
718db961
LP		 1791 r = sd_bus_message_read(message, "s", &s);
1792 if (r < 0)
1793 return r;
c221420b 1794
d79200e2
LP		 1795 if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
1796 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
1797
aea529e5
LP		 1798 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
1799 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
1800 * instead of manager_load_unit() on purpose, here. */
1801 r = manager_load_unit_prepare(u->manager, s, NULL, error, &slice);
d79200e2
LP		 1802 if (r < 0)
1803 return r;
c221420b 1804
d79200e2
LP		 1805 if (slice->type != UNIT_SLICE)
1806 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
b9316fb0 1807
2e59b241 1808 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
d79200e2 1809 r = unit_set_slice(u, slice);
8aec412f
LP		 1810 if (r < 0)
1811 return r;
c221420b 1812
2e59b241 1813 unit_write_settingf(u, flags|UNIT_PRIVATE, name, "Slice=%s", s);
8aec412f 1814 }
b9ec9359 1815
c221420b 1816 return 1;
d79200e2 1817
faa781cf
YW		 1818 } else if (streq(name, "RequiresMountsFor")) {
1819 _cleanup_strv_free_ char **l = NULL;
1820 char **p;
1821
1822 r = sd_bus_message_read_strv(message, &l);
1823 if (r < 0)
1824 return r;
1825
1826 STRV_FOREACH(p, l) {
b459700b
YW		 1827 path_simplify(*p, true);
1828
faa781cf
YW		 1829 if (!path_is_absolute(*p))
1830 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not absolute: %s", name, *p);
1831
b459700b
YW		 1832 if (!path_is_valid(*p))
1833 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s has invalid length: %s", name, *p);
1834
1835 if (!path_is_normalized(*p))
1836 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not normalized: %s", name, *p);
1837
faa781cf
YW		 1838 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1839 r = unit_require_mounts_for(u, *p, UNIT_DEPENDENCY_FILE);
1840 if (r < 0)
1841 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to add required mount \"%s\": %m", *p);
7fb3ee51 1842
faa781cf
YW		 1843 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
1844 }
f32b43bd 1845 }
7fb3ee51 1846
faa781cf
YW		 1847 return 1;
1848 }
1849
1850 if (streq(name, "RequiresOverridable"))
1851 d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */
1852 else if (streq(name, "RequisiteOverridable"))
1853 d = UNIT_REQUISITE; /* same here */
1854 else
1855 d = unit_dependency_from_string(name);
1856
1857 if (d >= 0) {
1858 const char *other;
1859
718db961
LP		 1860 r = sd_bus_message_enter_container(message, 'a', "s");
1861 if (r < 0)
1862 return r;
7fb3ee51 1863
718db961 1864 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
7410616c 1865 if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
718db961 1866 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
7fb3ee51 1867
2e59b241 1868 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
b9ec9359 1869 _cleanup_free_ char *label = NULL;
7fb3ee51 1870
35d8c19a 1871 r = unit_add_dependency_by_name(u, d, other, true, UNIT_DEPENDENCY_FILE);
7fb3ee51
LP		 1872 if (r < 0)
1873 return r;
1874
605405c6 1875 label = strjoin(name, "-", other);
7fb3ee51
LP		 1876 if (!label)
1877 return -ENOMEM;
1878
faa781cf 1879 unit_write_settingf(u, flags, label, "%s=%s", unit_dependency_to_string(d), other);
7fb3ee51
LP		 1880 }
1881
7fb3ee51 1882 }
718db961
LP		 1883 if (r < 0)
1884 return r;
7fb3ee51 1885
6ce270b1
LP		 1886 r = sd_bus_message_exit_container(message);
1887 if (r < 0)
1888 return r;
1889
7fb3ee51 1890 return 1;
05a98afd
LP		 1891
1892 } else if (streq(name, "AddRef")) {
1893
1894 int b;
1895
1896 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
1897 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
1898 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
1899 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
1900 * dependency type, hence let's not confuse things with that.
1901 *
5238e957 1902 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
05a98afd
LP		 1903 * the transient unit is complete, so that setting this property multiple times in the same transient
1904 * unit creation call doesn't count as individual references. */
1905
1906 r = sd_bus_message_read(message, "b", &b);
1907 if (r < 0)
1908 return r;
1909
2e59b241 1910 if (!UNIT_WRITE_FLAGS_NOOP(flags))
05a98afd
LP		 1911 u->bus_track_add = b;
1912
1913 return 1;
9f2e86af
LP		 1914 }
1915
1916 return 0;
1917}
1918
c2756a68
LP		 1919int bus_unit_set_properties(
1920 Unit *u,
718db961 1921 sd_bus_message *message,
2e59b241 1922 UnitWriteFlags flags,
c2756a68 1923 bool commit,
718db961 1924 sd_bus_error *error) {
c2756a68 1925
8e2af478 1926 bool for_real = false;
8e2af478
LP		 1927 unsigned n = 0;
1928 int r;
1929
1930 assert(u);
718db961 1931 assert(message);
8e2af478
LP		 1932
1933 /* We iterate through the array twice. First run we just check
1934 * if all passed data is valid, second run actually applies
1935 * it. This is to implement transaction-like behaviour without
1936 * actually providing full transactions. */
1937
718db961
LP		 1938 r = sd_bus_message_enter_container(message, 'a', "(sv)");
1939 if (r < 0)
1940 return r;
8e2af478 1941
8e2af478 1942 for (;;) {
8e2af478 1943 const char *name;
2e59b241 1944 UnitWriteFlags f;
8e2af478 1945
718db961
LP		 1946 r = sd_bus_message_enter_container(message, 'r', "sv");
1947 if (r < 0)
1948 return r;
1949 if (r == 0) {
2e59b241 1950 if (for_real || UNIT_WRITE_FLAGS_NOOP(flags))
8e2af478
LP		 1951 break;
1952
1953 /* Reached EOF. Let's try again, and this time for realz... */
718db961
LP		 1954 r = sd_bus_message_rewind(message, false);
1955 if (r < 0)
1956 return r;
6ce270b1 1957
8e2af478
LP		 1958 for_real = true;
1959 continue;
1960 }
1961
718db961
LP		 1962 r = sd_bus_message_read(message, "s", &name);
1963 if (r < 0)
1964 return r;
8e2af478 1965
718db961
LP		 1966 if (!UNIT_VTABLE(u)->bus_set_property)
1967 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
8e2af478 1968
718db961
LP		 1969 r = sd_bus_message_enter_container(message, 'v', NULL);
1970 if (r < 0)
1971 return r;
8e2af478 1972
2e59b241
LP		 1973 /* If not for real, then mask out the two target flags */
1974 f = for_real ? flags : (flags & ~(UNIT_RUNTIME|UNIT_PERSISTENT));
1975
1976 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, f, error);
9f2e86af 1977 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
2e59b241 1978 r = bus_unit_set_transient_property(u, name, message, f, error);
721060d4
LP		 1979 if (r == 0)
1980 r = bus_unit_set_live_property(u, name, message, f, error);
718db961
LP		 1981 if (r < 0)
1982 return r;
721060d4 1983
718db961
LP		 1984 if (r == 0)
1985 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
1986
1987 r = sd_bus_message_exit_container(message);
8e2af478
LP		 1988 if (r < 0)
1989 return r;
8e2af478 1990
718db961
LP		 1991 r = sd_bus_message_exit_container(message);
1992 if (r < 0)
1993 return r;
8e2af478
LP		 1994
1995 n += for_real;
1996 }
1997
6ce270b1
LP		 1998 r = sd_bus_message_exit_container(message);
1999 if (r < 0)
2000 return r;
2001
c2756a68 2002 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
8e2af478
LP		 2003 UNIT_VTABLE(u)->bus_commit_properties(u);
2004
241da328 2005 return n;
8e2af478 2006}
000a996d 2007
e49da001 2008int bus_unit_validate_load_state(Unit *u, sd_bus_error *error) {
6eb7c172 2009 assert(u);
000a996d 2010
e49da001 2011 /* Generates a pretty error if a unit isn't properly loaded. */
000a996d 2012
e49da001
LP		 2013 switch (u->load_state) {
2014
2015 case UNIT_LOADED:
2016 return 0;
000a996d 2017
e49da001 2018 case UNIT_NOT_FOUND:
b21d2f81 2019 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id);
000a996d 2020
c4555ad8
LP		 2021 case UNIT_BAD_SETTING:
2022 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING, "Unit %s has a bad unit file setting.", u->id);
2023
e49da001 2024 case UNIT_ERROR: /* Only show .load_error in UNIT_ERROR state */
06bed19e 2025 return sd_bus_error_set_errnof(error, u->load_error, "Unit %s failed to load properly: %m.", u->id);
e49da001
LP		 2026
2027 case UNIT_MASKED:
2028 return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id);
2029
2030 case UNIT_STUB:
2031 case UNIT_MERGED:
2032 default:
2033 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unexpected load state of unit %s", u->id);
2034 }
000a996d 2035}
05a98afd 2036
c5a97ed1 2037static int bus_unit_track_handler(sd_bus_track *t, void *userdata) {
05a98afd
LP		 2038 Unit *u = userdata;
2039
2040 assert(t);
2041 assert(u);
2042
2043 u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */
2044
e5c36295
LP		 2045 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2046 * let's see */
2047 unit_add_to_cgroup_empty_queue(u);
2048
2049 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
05a98afd 2050 unit_add_to_gc_queue(u);
e5c36295 2051
05a98afd
LP		 2052 return 0;
2053}
2054
c5a97ed1 2055static int bus_unit_allocate_bus_track(Unit *u) {
05a98afd
LP		 2056 int r;
2057
2058 assert(u);
2059
2060 if (u->bus_track)
2061 return 0;
2062
c5a97ed1 2063 r = sd_bus_track_new(u->manager->api_bus, &u->bus_track, bus_unit_track_handler, u);
05a98afd
LP		 2064 if (r < 0)
2065 return r;
2066
2067 r = sd_bus_track_set_recursive(u->bus_track, true);
2068 if (r < 0) {
2069 u->bus_track = sd_bus_track_unref(u->bus_track);
2070 return r;
2071 }
2072
2073 return 0;
2074}
2075
2076int bus_unit_track_add_name(Unit *u, const char *name) {
2077 int r;
2078
2079 assert(u);
2080
c5a97ed1 2081 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2082 if (r < 0)
2083 return r;
2084
2085 return sd_bus_track_add_name(u->bus_track, name);
2086}
2087
2088int bus_unit_track_add_sender(Unit *u, sd_bus_message *m) {
2089 int r;
2090
2091 assert(u);
2092
c5a97ed1 2093 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2094 if (r < 0)
2095 return r;
2096
2097 return sd_bus_track_add_sender(u->bus_track, m);
2098}
2099
2100int bus_unit_track_remove_sender(Unit *u, sd_bus_message *m) {
2101 assert(u);
2102
2103 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an
2104 * error */
2105 if (!u->bus_track)
2106 return -EUNATCH;
2107
2108 return sd_bus_track_remove_sender(u->bus_track, m);
2109}
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