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tree-wide: use _cleanup_set_free_ where appropriate
[thirdparty/systemd.git] / src / core / dbus-unit.c
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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 7#include "bus-common-errors.h"
269e4d2d 8#include "bus-polkit.h"
c0f765ca 9#include "bus-util.h"
07630cea 10#include "cgroup-util.h"
faa781cf 11#include "condition.h"
c5a97ed1 12#include "dbus-job.h"
8752c575 13#include "dbus-unit.h"
faa781cf 14#include "dbus-util.h"
07630cea 15#include "dbus.h"
291d565a 16#include "fd-util.h"
5cfa33e0 17#include "install.h"
8752c575 18#include "locale-util.h"
ea430986 19#include "log.h"
faa781cf 20#include "path-util.h"
291d565a 21#include "process-util.h"
e2417e41 22#include "selinux-access.h"
6eb7c172 23#include "signal-util.h"
efdb0237 24#include "special.h"
83f18c91 25#include "string-table.h"
07630cea
LP		 26#include "string-util.h"
27#include "strv.h"
ee104e11 28#include "user-util.h"
faa781cf 29#include "web-util.h"
718db961 30
874bd264
YW		 31static bool unit_can_start_refuse_manual(Unit *u) {
32 return unit_can_start(u) && !u->refuse_manual_start;
33}
34
35static bool unit_can_stop_refuse_manual(Unit *u) {
36 return unit_can_stop(u) && !u->refuse_manual_stop;
37}
38
39static bool unit_can_isolate_refuse_manual(Unit *u) {
40 return unit_can_isolate(u) && !u->refuse_manual_start;
41}
42
5afe510c 43static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode, collect_mode, CollectMode);
718db961 44static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
d420282b 45static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode);
87a47f99 46static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action, emergency_action, EmergencyAction);
cb7f88fc
YW		 47static BUS_DEFINE_PROPERTY_GET(property_get_description, "s", Unit, unit_description);
48static BUS_DEFINE_PROPERTY_GET2(property_get_active_state, "s", Unit, unit_active_state, unit_active_state_to_string);
d9e45bc3 49static BUS_DEFINE_PROPERTY_GET2(property_get_freezer_state, "s", Unit, unit_freezer_state, freezer_state_to_string);
cb7f88fc
YW		 50static BUS_DEFINE_PROPERTY_GET(property_get_sub_state, "s", Unit, unit_sub_state_to_string);
51static BUS_DEFINE_PROPERTY_GET2(property_get_unit_file_state, "s", Unit, unit_get_unit_file_state, unit_file_state_to_string);
52static BUS_DEFINE_PROPERTY_GET(property_get_can_reload, "b", Unit, unit_can_reload);
874bd264
YW		 53static BUS_DEFINE_PROPERTY_GET(property_get_can_start, "b", Unit, unit_can_start_refuse_manual);
54static BUS_DEFINE_PROPERTY_GET(property_get_can_stop, "b", Unit, unit_can_stop_refuse_manual);
55static BUS_DEFINE_PROPERTY_GET(property_get_can_isolate, "b", Unit, unit_can_isolate_refuse_manual);
d9e45bc3 56static BUS_DEFINE_PROPERTY_GET(property_get_can_freeze, "b", Unit, unit_can_freeze);
cb7f88fc 57static BUS_DEFINE_PROPERTY_GET(property_get_need_daemon_reload, "b", Unit, unit_need_daemon_reload);
92c23c5a 58static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_empty_strv, "as", 0);
718db961 59
4d3bac56
LP		 60static int property_get_can_clean(
61 sd_bus *bus,
62 const char *path,
63 const char *interface,
64 const char *property,
65 sd_bus_message *reply,
66 void *userdata,
67 sd_bus_error *error) {
68
69 Unit *u = userdata;
70 ExecCleanMask mask;
71 int r;
72
73 assert(bus);
74 assert(reply);
75
76 r = unit_can_clean(u, &mask);
77 if (r < 0)
78 return r;
79
80 r = sd_bus_message_open_container(reply, 'a', "s");
81 if (r < 0)
82 return r;
83
84 for (ExecDirectoryType t = 0; t < _EXEC_DIRECTORY_TYPE_MAX; t++) {
85 if (!FLAGS_SET(mask, 1U << t))
86 continue;
87
88 r = sd_bus_message_append(reply, "s", exec_resource_type_to_string(t));
89 if (r < 0)
90 return r;
91 }
92
93 return sd_bus_message_close_container(reply);
94}
95
718db961
LP		 96static int property_get_names(
97 sd_bus *bus,
98 const char *path,
99 const char *interface,
100 const char *property,
101 sd_bus_message *reply,
ebcf1f97
LP		 102 void *userdata,
103 sd_bus_error *error) {
718db961 104
14f7edb0 105 Set **s = userdata;
718db961
LP		 106 Iterator i;
107 const char *t;
108 int r;
ea430986 109
718db961
LP		 110 assert(bus);
111 assert(reply);
14f7edb0 112 assert(s);
4139c1b2 113
718db961
LP		 114 r = sd_bus_message_open_container(reply, 'a', "s");
115 if (r < 0)
116 return r;
4139c1b2 117
14f7edb0 118 SET_FOREACH(t, *s, i) {
718db961
LP		 119 r = sd_bus_message_append(reply, "s", t);
120 if (r < 0)
121 return r;
122 }
4139c1b2 123
718db961 124 return sd_bus_message_close_container(reply);
4139c1b2
LP		 125}
126
718db961
LP		 127static int property_get_following(
128 sd_bus *bus,
129 const char *path,
130 const char *interface,
131 const char *property,
132 sd_bus_message *reply,
ebcf1f97
LP		 133 void *userdata,
134 sd_bus_error *error) {
718db961
LP		 135
136 Unit *u = userdata, *f;
8fe914ec 137
718db961
LP		 138 assert(bus);
139 assert(reply);
8fe914ec
LP		 140 assert(u);
141
a7f241db 142 f = unit_following(u);
79a60375 143 return sd_bus_message_append(reply, "s", f ? f->id : NULL);
8fe914ec
LP		 144}
145
718db961
LP		 146static int property_get_dependencies(
147 sd_bus *bus,
148 const char *path,
149 const char *interface,
150 const char *property,
151 sd_bus_message *reply,
ebcf1f97
LP		 152 void *userdata,
153 sd_bus_error *error) {
4ec9a8a4 154
d1d85471 155 Hashmap **h = userdata;
5301be81 156 Iterator j;
718db961 157 Unit *u;
eef85c4a 158 void *v;
718db961 159 int r;
5301be81 160
718db961
LP		 161 assert(bus);
162 assert(reply);
d1d85471 163 assert(h);
5301be81 164
718db961
LP		 165 r = sd_bus_message_open_container(reply, 'a', "s");
166 if (r < 0)
167 return r;
5301be81 168
d1d85471 169 HASHMAP_FOREACH_KEY(v, u, *h, j) {
718db961
LP		 170 r = sd_bus_message_append(reply, "s", u->id);
171 if (r < 0)
172 return r;
173 }
5301be81 174
718db961 175 return sd_bus_message_close_container(reply);
5301be81
LP		 176}
177
99c14018
YW		 178static int property_get_requires_mounts_for(
179 sd_bus *bus,
180 const char *path,
181 const char *interface,
182 const char *property,
183 sd_bus_message *reply,
184 void *userdata,
185 sd_bus_error *error) {
186
d1d85471 187 Hashmap **h = userdata;
99c14018 188 const char *p;
f6e11b39 189 Iterator j;
99c14018
YW		 190 void *v;
191 int r;
192
193 assert(bus);
194 assert(reply);
d1d85471 195 assert(h);
99c14018
YW		 196
197 r = sd_bus_message_open_container(reply, 'a', "s");
198 if (r < 0)
199 return r;
200
d1d85471 201 HASHMAP_FOREACH_KEY(v, p, *h, j) {
99c14018
YW		 202 r = sd_bus_message_append(reply, "s", p);
203 if (r < 0)
204 return r;
205 }
206
207 return sd_bus_message_close_container(reply);
208}
209
d2dc52db
LP		 210static int property_get_unit_file_preset(
211 sd_bus *bus,
212 const char *path,
213 const char *interface,
214 const char *property,
215 sd_bus_message *reply,
216 void *userdata,
217 sd_bus_error *error) {
218
219 Unit *u = userdata;
220 int r;
221
222 assert(bus);
223 assert(reply);
224 assert(u);
225
226 r = unit_get_unit_file_preset(u);
227
228 return sd_bus_message_append(reply, "s",
79a60375 229 r < 0 ? NULL:
d2dc52db
LP		 230 r > 0 ? "enabled" : "disabled");
231}
232
718db961
LP		 233static int property_get_job(
234 sd_bus *bus,
235 const char *path,
236 const char *interface,
237 const char *property,
238 sd_bus_message *reply,
ebcf1f97
LP		 239 void *userdata,
240 sd_bus_error *error) {
718db961 241
f93891f3 242 _cleanup_free_ char *p = NULL;
14f7edb0 243 Job **j = userdata;
38131695 244
718db961
LP		 245 assert(bus);
246 assert(reply);
14f7edb0 247 assert(j);
38131695 248
14f7edb0 249 if (!*j)
718db961 250 return sd_bus_message_append(reply, "(uo)", 0, "/");
38131695 251
14f7edb0 252 p = job_dbus_path(*j);
718db961
LP		 253 if (!p)
254 return -ENOMEM;
38131695 255
14f7edb0 256 return sd_bus_message_append(reply, "(uo)", (*j)->id, p);
718db961 257}
38131695 258
718db961
LP		 259static int property_get_conditions(
260 sd_bus *bus,
261 const char *path,
262 const char *interface,
263 const char *property,
264 sd_bus_message *reply,
ebcf1f97
LP		 265 void *userdata,
266 sd_bus_error *error) {
45fb0699 267
59fccdc5
LP		 268 const char *(*to_string)(ConditionType type) = NULL;
269 Condition **list = userdata, *c;
718db961 270 int r;
45fb0699 271
718db961
LP		 272 assert(bus);
273 assert(reply);
59fccdc5
LP		 274 assert(list);
275
276 to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
45fb0699 277
718db961
LP		 278 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
279 if (r < 0)
280 return r;
45fb0699 281
59fccdc5 282 LIST_FOREACH(conditions, c, *list) {
cc50ef13
LP		 283 int tristate;
284
285 tristate =
286 c->result == CONDITION_UNTESTED ? 0 :
287 c->result == CONDITION_SUCCEEDED ? 1 : -1;
288
2c7e050f 289 r = sd_bus_message_append(reply, "(sbbsi)",
59fccdc5 290 to_string(c->type),
2c7e050f 291 c->trigger, c->negate,
cc50ef13 292 c->parameter, tristate);
718db961
LP		 293 if (r < 0)
294 return r;
45fb0699 295
718db961 296 }
52990c2e 297
718db961 298 return sd_bus_message_close_container(reply);
52990c2e
ZJS		 299}
300
718db961
LP		 301static int property_get_load_error(
302 sd_bus *bus,
303 const char *path,
304 const char *interface,
305 const char *property,
306 sd_bus_message *reply,
ebcf1f97
LP		 307 void *userdata,
308 sd_bus_error *error) {
52990c2e 309
4afd3348 310 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
fd1e3fd8
LP		 311 Unit *u = userdata;
312 int r;
52990c2e 313
718db961
LP		 314 assert(bus);
315 assert(reply);
fd1e3fd8 316 assert(u);
52990c2e 317
fd1e3fd8
LP		 318 r = bus_unit_validate_load_state(u, &e);
319 if (r < 0)
320 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
52990c2e 321
fd1e3fd8 322 return sd_bus_message_append(reply, "(ss)", NULL, NULL);
52990c2e
ZJS		 323}
324
88ced61b
MC		 325static int bus_verify_manage_units_async_full(
326 Unit *u,
327 const char *verb,
328 int capability,
329 const char *polkit_message,
05a98afd 330 bool interactive,
88ced61b
MC		 331 sd_bus_message *call,
332 sd_bus_error *error) {
333
334 const char *details[9] = {
335 "unit", u->id,
336 "verb", verb,
337 };
338
339 if (polkit_message) {
340 details[4] = "polkit.message";
341 details[5] = polkit_message;
342 details[6] = "polkit.gettext_domain";
343 details[7] = GETTEXT_PACKAGE;
344 }
345
05a98afd
LP		 346 return bus_verify_polkit_async(
347 call,
348 capability,
349 "org.freedesktop.systemd1.manage-units",
350 details,
351 interactive,
352 UID_INVALID,
353 &u->manager->polkit_registry,
354 error);
88ced61b
MC		 355}
356
50cbaba4
LP		 357static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
358 [JOB_START] = N_("Authentication is required to start '$(unit)'."),
359 [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
360 [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
361 [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
362 [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
363};
364
1d22e906 365int bus_unit_method_start_generic(
1d22e906
LP		 366 sd_bus_message *message,
367 Unit *u,
368 JobType job_type,
369 bool reload_if_possible,
370 sd_bus_error *error) {
371
e59ba56d 372 const char *smode, *verb;
718db961
LP		 373 JobMode mode;
374 int r;
9f39404c 375
718db961 376 assert(message);
9f39404c 377 assert(u);
718db961 378 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
9f39404c 379
61ea63f1
EV		 380 r = mac_selinux_unit_access_check(
381 u, message,
94bd7323
EV		 382 job_type_to_access_method(job_type),
383 error);
1d22e906
LP		 384 if (r < 0)
385 return r;
386
718db961
LP		 387 r = sd_bus_message_read(message, "s", &smode);
388 if (r < 0)
ebcf1f97 389 return r;
9f39404c 390
718db961
LP		 391 mode = job_mode_from_string(smode);
392 if (mode < 0)
ebcf1f97 393 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
9f39404c 394
88ced61b 395 if (reload_if_possible)
e59ba56d 396 verb = strjoina("reload-or-", job_type_to_string(job_type));
88ced61b 397 else
e59ba56d 398 verb = job_type_to_string(job_type);
88ced61b
MC		 399
400 r = bus_verify_manage_units_async_full(
401 u,
402 verb,
403 CAP_SYS_ADMIN,
ebfb1b57 404 polkit_message_for_job[job_type],
05a98afd 405 true,
88ced61b
MC		 406 message,
407 error);
1d22e906
LP		 408 if (r < 0)
409 return r;
410 if (r == 0)
411 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
412
50cbaba4
LP		 413 return bus_unit_queue_job(message, u, job_type, mode,
414 reload_if_possible ? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE : 0, error);
9f39404c
LP		 415}
416
19070062
LP		 417static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
418 return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
718db961 419}
b548631a 420
19070062
LP		 421static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
422 return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
718db961
LP		 423}
424
19070062
LP		 425static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
426 return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
718db961 427}
0a524ba7 428
19070062
LP		 429static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
430 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
718db961 431}
8a0867d6 432
19070062
LP		 433static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
434 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
718db961 435}
cad45ba1 436
19070062
LP		 437static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
438 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
718db961 439}
8a0867d6 440
19070062
LP		 441static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
442 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
718db961 443}
8a0867d6 444
50cbaba4
LP		 445int bus_unit_method_enqueue_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
446 BusUnitQueueFlags flags = BUS_UNIT_QUEUE_VERBOSE_REPLY;
447 const char *jtype, *smode;
448 Unit *u = userdata;
449 JobType type;
450 JobMode mode;
451 int r;
452
453 assert(message);
454 assert(u);
455
456 r = sd_bus_message_read(message, "ss", &jtype, &smode);
457 if (r < 0)
458 return r;
459
460 /* Parse the two magic reload types "reload-or-…" manually */
461 if (streq(jtype, "reload-or-restart")) {
462 type = JOB_RESTART;
463 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
464 } else if (streq(jtype, "reload-or-try-restart")) {
465 type = JOB_TRY_RESTART;
466 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
467 } else {
468 /* And the rest generically */
469 type = job_type_from_string(jtype);
470 if (type < 0)
471 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job type %s invalid", jtype);
472 }
473
474 mode = job_mode_from_string(smode);
475 if (mode < 0)
476 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
477
478 r = mac_selinux_unit_access_check(
479 u, message,
480 job_type_to_access_method(type),
481 error);
482 if (r < 0)
483 return r;
484
485 r = bus_verify_manage_units_async_full(
486 u,
487 jtype,
488 CAP_SYS_ADMIN,
489 polkit_message_for_job[type],
490 true,
491 message,
492 error);
493 if (r < 0)
494 return r;
495 if (r == 0)
496 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
497
498 return bus_unit_queue_job(message, u, type, mode, flags, error);
499}
500
19070062 501int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 502 Unit *u = userdata;
503 const char *swho;
504 int32_t signo;
505 KillWho who;
506 int r;
5632e374 507
718db961
LP		 508 assert(message);
509 assert(u);
cad45ba1 510
1d22e906 511 r = mac_selinux_unit_access_check(u, message, "stop", error);
283868e1
SW		 512 if (r < 0)
513 return r;
283868e1 514
718db961
LP		 515 r = sd_bus_message_read(message, "si", &swho, &signo);
516 if (r < 0)
ebcf1f97 517 return r;
718db961
LP		 518
519 if (isempty(swho))
520 who = KILL_ALL;
521 else {
522 who = kill_who_from_string(swho);
523 if (who < 0)
ebcf1f97 524 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
718db961 525 }
5632e374 526
6eb7c172 527 if (!SIGNAL_VALID(signo))
ebcf1f97 528 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
8e2af478 529
88ced61b
MC		 530 r = bus_verify_manage_units_async_full(
531 u,
532 "kill",
533 CAP_KILL,
1d445eda 534 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
05a98afd 535 true,
88ced61b
MC		 536 message,
537 error);
ebcf1f97
LP		 538 if (r < 0)
539 return r;
1d22e906
LP		 540 if (r == 0)
541 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
8e2af478 542
ebcf1f97 543 r = unit_kill(u, who, signo, error);
718db961 544 if (r < 0)
ebcf1f97 545 return r;
8e2af478 546
df2d202e 547 return sd_bus_reply_method_return(message, NULL);
718db961 548}
8e2af478 549
19070062 550int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961 551 Unit *u = userdata;
ebcf1f97 552 int r;
b548631a 553
718db961
LP		 554 assert(message);
555 assert(u);
b548631a 556
1d22e906 557 r = mac_selinux_unit_access_check(u, message, "reload", error);
283868e1
SW		 558 if (r < 0)
559 return r;
283868e1 560
88ced61b
MC		 561 r = bus_verify_manage_units_async_full(
562 u,
563 "reset-failed",
564 CAP_SYS_ADMIN,
565 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
05a98afd 566 true,
88ced61b
MC		 567 message,
568 error);
ebcf1f97
LP		 569 if (r < 0)
570 return r;
1d22e906
LP		 571 if (r == 0)
572 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
b548631a 573
718db961 574 unit_reset_failed(u);
b548631a 575
df2d202e 576 return sd_bus_reply_method_return(message, NULL);
ea430986
LP		 577}
578
19070062 579int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 580 Unit *u = userdata;
581 int runtime, r;
ea430986 582
ea430986 583 assert(message);
718db961 584 assert(u);
80fbf05e 585
1d22e906 586 r = mac_selinux_unit_access_check(u, message, "start", error);
283868e1
SW		 587 if (r < 0)
588 return r;
283868e1 589
718db961
LP		 590 r = sd_bus_message_read(message, "b", &runtime);
591 if (r < 0)
ebcf1f97 592 return r;
2cccbca4 593
88ced61b
MC		 594 r = bus_verify_manage_units_async_full(
595 u,
596 "set-property",
597 CAP_SYS_ADMIN,
598 N_("Authentication is required to set properties on '$(unit)'."),
05a98afd 599 true,
88ced61b
MC		 600 message,
601 error);
ebcf1f97
LP		 602 if (r < 0)
603 return r;
1d22e906
LP		 604 if (r == 0)
605 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
cad45ba1 606
ebcf1f97 607 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
718db961 608 if (r < 0)
ebcf1f97 609 return r;
2cccbca4 610
df2d202e 611 return sd_bus_reply_method_return(message, NULL);
718db961 612}
2cccbca4 613
05a98afd
LP		 614int bus_unit_method_ref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
615 Unit *u = userdata;
616 int r;
617
618 assert(message);
619 assert(u);
620
621 r = mac_selinux_unit_access_check(u, message, "start", error);
622 if (r < 0)
623 return r;
624
625 r = bus_verify_manage_units_async_full(
626 u,
627 "ref",
628 CAP_SYS_ADMIN,
629 NULL,
630 false,
631 message,
632 error);
633 if (r < 0)
634 return r;
635 if (r == 0)
636 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
637
638 r = bus_unit_track_add_sender(u, message);
639 if (r < 0)
640 return r;
641
642 return sd_bus_reply_method_return(message, NULL);
643}
644
645int bus_unit_method_unref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
646 Unit *u = userdata;
647 int r;
648
649 assert(message);
650 assert(u);
651
652 r = bus_unit_track_remove_sender(u, message);
653 if (r == -EUNATCH)
654 return sd_bus_error_setf(error, BUS_ERROR_NOT_REFERENCED, "Unit has not been referenced yet.");
655 if (r < 0)
656 return r;
657
658 return sd_bus_reply_method_return(message, NULL);
659}
660
4d3bac56
LP		 661int bus_unit_method_clean(sd_bus_message *message, void *userdata, sd_bus_error *error) {
662 ExecCleanMask mask = 0;
663 Unit *u = userdata;
664 int r;
665
666 assert(message);
667 assert(u);
668
669 r = mac_selinux_unit_access_check(u, message, "stop", error);
670 if (r < 0)
671 return r;
672
673 r = sd_bus_message_enter_container(message, 'a', "s");
674 if (r < 0)
675 return r;
676
677 for (;;) {
678 const char *i;
679
680 r = sd_bus_message_read(message, "s", &i);
681 if (r < 0)
682 return r;
683 if (r == 0)
684 break;
685
686 if (streq(i, "all"))
687 mask |= EXEC_CLEAN_ALL;
688 else {
689 ExecDirectoryType t;
690
691 t = exec_resource_type_from_string(i);
692 if (t < 0)
693 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid resource type: %s", i);
694
695 mask |= 1U << t;
696 }
697 }
698
699 r = sd_bus_message_exit_container(message);
700 if (r < 0)
701 return r;
702
703 r = bus_verify_manage_units_async_full(
704 u,
705 "clean",
706 CAP_DAC_OVERRIDE,
707 N_("Authentication is required to delete files and directories associated with '$(unit)'."),
708 true,
709 message,
710 error);
711 if (r < 0)
712 return r;
713 if (r == 0)
714 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
715
716 r = unit_clean(u, mask);
717 if (r == -EOPNOTSUPP)
718 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not supporting cleaning.", u->id);
719 if (r == -EUNATCH)
720 return sd_bus_error_setf(error, BUS_ERROR_NOTHING_TO_CLEAN, "No matching resources found.");
721 if (r == -EBUSY)
722 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit is not inactive or has pending job.");
723 if (r < 0)
724 return r;
725
726 return sd_bus_reply_method_return(message, NULL);
727}
728
d9e45bc3
MS		 729static int bus_unit_method_freezer_generic(sd_bus_message *message, void *userdata, sd_bus_error *error, FreezerAction action) {
730 const char* perm;
731 int (*method)(Unit*);
732 Unit *u = userdata;
733 bool reply_no_delay = false;
734 int r;
735
736 assert(message);
737 assert(u);
738 assert(IN_SET(action, FREEZER_FREEZE, FREEZER_THAW));
739
740 if (action == FREEZER_FREEZE) {
741 perm = "stop";
742 method = unit_freeze;
743 } else {
744 perm = "start";
745 method = unit_thaw;
746 }
747
748 r = mac_selinux_unit_access_check(u, message, perm, error);
749 if (r < 0)
750 return r;
751
752 r = bus_verify_manage_units_async_full(
753 u,
754 perm,
755 CAP_SYS_ADMIN,
756 N_("Authentication is required to freeze or thaw the processes of '$(unit)' unit."),
757 true,
758 message,
759 error);
760 if (r < 0)
761 return r;
762 if (r == 0)
763 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
764
765 r = method(u);
766 if (r == -EOPNOTSUPP)
767 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not support freezing.", u->id);
768 if (r == -EBUSY)
769 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit has a pending job.");
770 if (r == -EHOSTDOWN)
771 return sd_bus_error_setf(error, BUS_ERROR_UNIT_INACTIVE, "Unit is inactive.");
772 if (r == -EALREADY)
773 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Previously requested freezer operation for unit '%s' is still in progress.", u->id);
774 if (r < 0)
775 return r;
776 if (r == 0)
777 reply_no_delay = true;
778
779 assert(!u->pending_freezer_message);
780
781 r = sd_bus_message_new_method_return(message, &u->pending_freezer_message);
782 if (r < 0)
783 return r;
784
785 if (reply_no_delay) {
786 r = bus_unit_send_pending_freezer_message(u);
787 if (r < 0)
788 return r;
789 }
790
791 return 1;
792}
793
794int bus_unit_method_thaw(sd_bus_message *message, void *userdata, sd_bus_error *error) {
795 return bus_unit_method_freezer_generic(message, userdata, error, FREEZER_THAW);
796}
797
798int bus_unit_method_freeze(sd_bus_message *message, void *userdata, sd_bus_error *error) {
799 return bus_unit_method_freezer_generic(message, userdata, error, FREEZER_FREEZE);
800}
801
bedea99d
LP		 802static int property_get_refs(
803 sd_bus *bus,
804 const char *path,
805 const char *interface,
806 const char *property,
807 sd_bus_message *reply,
808 void *userdata,
809 sd_bus_error *error) {
810
811 Unit *u = userdata;
812 const char *i;
813 int r;
814
815 assert(bus);
816 assert(reply);
817
818 r = sd_bus_message_open_container(reply, 'a', "s");
819 if (r < 0)
820 return r;
821
822 for (i = sd_bus_track_first(u->bus_track); i; i = sd_bus_track_next(u->bus_track)) {
823 int c, k;
824
825 c = sd_bus_track_count_name(u->bus_track, i);
826 if (c < 0)
827 return c;
828
829 /* Add the item multiple times if the ref count for each is above 1 */
830 for (k = 0; k < c; k++) {
831 r = sd_bus_message_append(reply, "s", i);
832 if (r < 0)
833 return r;
834 }
835 }
836
837 return sd_bus_message_close_container(reply);
838}
839
718db961
LP		 840const sd_bus_vtable bus_unit_vtable[] = {
841 SD_BUS_VTABLE_START(0),
842
556089dc 843 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 844 SD_BUS_PROPERTY("Names", "as", property_get_names, offsetof(Unit, names), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 845 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
556089dc 846 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 847 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 848 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
849 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
850 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
851 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
be7d9ff7 852 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 853 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
854 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
855 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
856 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
857 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
858 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
859 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
860 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
861 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
862 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
863 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
864 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
865 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
99c14018 866 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 867 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
868 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
869 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 870 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
d9e45bc3 871 SD_BUS_PROPERTY("FreezerState", "s", property_get_freezer_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 872 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 873 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
874 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
875 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 876 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
d2dc52db 877 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0),
a483fb59 878 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit, state_change_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961
LP		 879 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
880 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
881 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
882 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 883 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
884 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
885 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
886 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
4d3bac56 887 SD_BUS_PROPERTY("CanClean", "as", property_get_can_clean, 0, SD_BUS_VTABLE_PROPERTY_CONST),
d9e45bc3 888 SD_BUS_PROPERTY("CanFreeze", "b", property_get_can_freeze, 0, SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 889 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, offsetof(Unit, job), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 890 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
891 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
892 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
893 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
894 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
895 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
896 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 897 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
898 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
a2df3ea4 899 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_running_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 900 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
f189ab18 901 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 902 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 903 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 904 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 905 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
e18f8852
LP		 906 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
907 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
fd1e3fd8 908 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 909 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
f5869324 910 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool, offsetof(Unit, perpetual), SD_BUS_VTABLE_PROPERTY_CONST),
7bf081a1
ZJS		 911 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
912 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_ratelimit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 913 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
53c35a76 914 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 915 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int, offsetof(Unit, failure_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
e7dfbb4e 916 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action, offsetof(Unit, success_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 917 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int, offsetof(Unit, success_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
6bf0f408 918 SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
af92c603 919 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
641e0d7a 920 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), SD_BUS_VTABLE_PROPERTY_CONST),
bedea99d 921 SD_BUS_PROPERTY("Refs", "as", property_get_refs, 0, 0),
718db961 922
dad97f04
ZJS		 923 SD_BUS_METHOD_WITH_NAMES("Start",
924 "s",
925 SD_BUS_PARAM(mode),
926 "o",
927 SD_BUS_PARAM(job),
928 method_start,
929 SD_BUS_VTABLE_UNPRIVILEGED),
930 SD_BUS_METHOD_WITH_NAMES("Stop",
931 "s",
932 SD_BUS_PARAM(mode),
933 "o",
934 SD_BUS_PARAM(job),
935 method_stop,
936 SD_BUS_VTABLE_UNPRIVILEGED),
937 SD_BUS_METHOD_WITH_NAMES("Reload",
938 "s",
939 SD_BUS_PARAM(mode),
940 "o",
941 SD_BUS_PARAM(job),
942 method_reload,
943 SD_BUS_VTABLE_UNPRIVILEGED),
944 SD_BUS_METHOD_WITH_NAMES("Restart",
945 "s",
946 SD_BUS_PARAM(mode),
947 "o",
948 SD_BUS_PARAM(job),
949 method_restart,
950 SD_BUS_VTABLE_UNPRIVILEGED),
951 SD_BUS_METHOD_WITH_NAMES("TryRestart",
952 "s",
953 SD_BUS_PARAM(mode),
954 "o",
955 SD_BUS_PARAM(job),
956 method_try_restart,
957 SD_BUS_VTABLE_UNPRIVILEGED),
958 SD_BUS_METHOD_WITH_NAMES("ReloadOrRestart",
959 "s",
960 SD_BUS_PARAM(mode),
961 "o",
962 SD_BUS_PARAM(job),
963 method_reload_or_restart,
964 SD_BUS_VTABLE_UNPRIVILEGED),
965 SD_BUS_METHOD_WITH_NAMES("ReloadOrTryRestart",
966 "s",
967 SD_BUS_PARAM(mode),
968 "o",
969 SD_BUS_PARAM(job),
970 method_reload_or_try_restart,
971 SD_BUS_VTABLE_UNPRIVILEGED),
972 SD_BUS_METHOD_WITH_NAMES("EnqueueJob",
973 "ss",
974 SD_BUS_PARAM(job_type)
975 SD_BUS_PARAM(job_mode),
976 "uososa(uosos)",
977 SD_BUS_PARAM(job_id)
978 SD_BUS_PARAM(job_path)
979 SD_BUS_PARAM(unit_id)
980 SD_BUS_PARAM(unit_path)
981 SD_BUS_PARAM(job_type)
982 SD_BUS_PARAM(affected_jobs),
983 bus_unit_method_enqueue_job,
984 SD_BUS_VTABLE_UNPRIVILEGED),
985 SD_BUS_METHOD_WITH_NAMES("Kill",
986 "si",
987 SD_BUS_PARAM(whom)
988 SD_BUS_PARAM(signal),
989 NULL,,
990 bus_unit_method_kill,
991 SD_BUS_VTABLE_UNPRIVILEGED),
992 SD_BUS_METHOD("ResetFailed",
993 NULL,
994 NULL,
995 bus_unit_method_reset_failed,
996 SD_BUS_VTABLE_UNPRIVILEGED),
997 SD_BUS_METHOD_WITH_NAMES("SetProperties",
998 "ba(sv)",
999 SD_BUS_PARAM(runtime)
1000 SD_BUS_PARAM(properties),
1001 NULL,,
1002 bus_unit_method_set_properties,
1003 SD_BUS_VTABLE_UNPRIVILEGED),
1004 SD_BUS_METHOD("Ref",
1005 NULL,
1006 NULL,
1007 bus_unit_method_ref,
1008 SD_BUS_VTABLE_UNPRIVILEGED),
1009 SD_BUS_METHOD("Unref",
1010 NULL,
1011 NULL,
1012 bus_unit_method_unref,
1013 SD_BUS_VTABLE_UNPRIVILEGED),
1014 SD_BUS_METHOD_WITH_NAMES("Clean",
1015 "as",
1016 SD_BUS_PARAM(mask),
1017 NULL,,
1018 bus_unit_method_clean,
1019 SD_BUS_VTABLE_UNPRIVILEGED),
d9e45bc3
MS		 1020 SD_BUS_METHOD("Freeze",
1021 NULL,
1022 NULL,
1023 bus_unit_method_freeze,
1024 SD_BUS_VTABLE_UNPRIVILEGED),
1025 SD_BUS_METHOD("Thaw",
1026 NULL,
1027 NULL,
1028 bus_unit_method_thaw,
1029 SD_BUS_VTABLE_UNPRIVILEGED),
718db961 1030
92c23c5a
YW		 1031 /* For dependency types we don't support anymore always return an empty array */
1032 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1033 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1034 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1035 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1036 /* Obsolete alias names */
7bf081a1
ZJS		 1037 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
1038 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
dad97f04 1039
718db961
LP		 1040 SD_BUS_VTABLE_END
1041};
2cccbca4 1042
718db961
LP		 1043static int property_get_slice(
1044 sd_bus *bus,
1045 const char *path,
1046 const char *interface,
1047 const char *property,
1048 sd_bus_message *reply,
ebcf1f97
LP		 1049 void *userdata,
1050 sd_bus_error *error) {
2cccbca4 1051
718db961 1052 Unit *u = userdata;
2cccbca4 1053
718db961
LP		 1054 assert(bus);
1055 assert(reply);
1056 assert(u);
2cccbca4 1057
718db961
LP		 1058 return sd_bus_message_append(reply, "s", unit_slice_name(u));
1059}
2cccbca4 1060
934277fe
LP		 1061static int property_get_current_memory(
1062 sd_bus *bus,
1063 const char *path,
1064 const char *interface,
1065 const char *property,
1066 sd_bus_message *reply,
1067 void *userdata,
1068 sd_bus_error *error) {
1069
934277fe 1070 uint64_t sz = (uint64_t) -1;
5ad096b3 1071 Unit *u = userdata;
934277fe
LP		 1072 int r;
1073
1074 assert(bus);
1075 assert(reply);
1076 assert(u);
1077
5ad096b3
LP		 1078 r = unit_get_memory_current(u, &sz);
1079 if (r < 0 && r != -ENODATA)
f2341e0a 1080 log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m");
934277fe 1081
5ad096b3
LP		 1082 return sd_bus_message_append(reply, "t", sz);
1083}
934277fe 1084
03a7b521
LP		 1085static int property_get_current_tasks(
1086 sd_bus *bus,
1087 const char *path,
1088 const char *interface,
1089 const char *property,
1090 sd_bus_message *reply,
1091 void *userdata,
1092 sd_bus_error *error) {
1093
1094 uint64_t cn = (uint64_t) -1;
1095 Unit *u = userdata;
1096 int r;
1097
1098 assert(bus);
1099 assert(reply);
1100 assert(u);
1101
1102 r = unit_get_tasks_current(u, &cn);
1103 if (r < 0 && r != -ENODATA)
1104 log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m");
1105
1106 return sd_bus_message_append(reply, "t", cn);
1107}
1108
5ad096b3
LP		 1109static int property_get_cpu_usage(
1110 sd_bus *bus,
1111 const char *path,
1112 const char *interface,
1113 const char *property,
1114 sd_bus_message *reply,
1115 void *userdata,
1116 sd_bus_error *error) {
934277fe 1117
5ad096b3
LP		 1118 nsec_t ns = (nsec_t) -1;
1119 Unit *u = userdata;
1120 int r;
1121
1122 assert(bus);
1123 assert(reply);
1124 assert(u);
1125
1126 r = unit_get_cpu_usage(u, &ns);
1127 if (r < 0 && r != -ENODATA)
f2341e0a 1128 log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m");
5ad096b3
LP		 1129
1130 return sd_bus_message_append(reply, "t", ns);
934277fe
LP		 1131}
1132
047f5d63
PH		 1133static int property_get_cpuset_cpus(
1134 sd_bus *bus,
1135 const char *path,
1136 const char *interface,
1137 const char *property,
1138 sd_bus_message *reply,
1139 void *userdata,
1140 sd_bus_error *error) {
1141
1142 Unit *u = userdata;
1143 _cleanup_(cpu_set_reset) CPUSet cpus = {};
1144 _cleanup_free_ uint8_t *array = NULL;
1145 size_t allocated;
1146
1147 assert(bus);
1148 assert(reply);
1149 assert(u);
1150
1151 (void) unit_get_cpuset(u, &cpus, "cpuset.cpus.effective");
1152 (void) cpu_set_to_dbus(&cpus, &array, &allocated);
1153 return sd_bus_message_append_array(reply, 'y', array, allocated);
1154}
1155
1156static int property_get_cpuset_mems(
1157 sd_bus *bus,
1158 const char *path,
1159 const char *interface,
1160 const char *property,
1161 sd_bus_message *reply,
1162 void *userdata,
1163 sd_bus_error *error) {
1164
1165 Unit *u = userdata;
1166 _cleanup_(cpu_set_reset) CPUSet mems = {};
1167 _cleanup_free_ uint8_t *array = NULL;
1168 size_t allocated;
1169
1170 assert(bus);
1171 assert(reply);
1172 assert(u);
1173
1174 (void) unit_get_cpuset(u, &mems, "cpuset.mems.effective");
1175 (void) cpu_set_to_dbus(&mems, &array, &allocated);
1176 return sd_bus_message_append_array(reply, 'y', array, allocated);
1177}
1178
98bac605
LP		 1179static int property_get_cgroup(
1180 sd_bus *bus,
1181 const char *path,
1182 const char *interface,
1183 const char *property,
1184 sd_bus_message *reply,
1185 void *userdata,
1186 sd_bus_error *error) {
1187
1188 Unit *u = userdata;
79a60375 1189 const char *t = NULL;
98bac605
LP		 1190
1191 assert(bus);
1192 assert(reply);
1193 assert(u);
1194
1195 /* Three cases: a) u->cgroup_path is NULL, in which case the
1196 * unit has no control group, which we report as the empty
1197 * string. b) u->cgroup_path is the empty string, which
1198 * indicates the root cgroup, which we report as "/". c) all
1199 * other cases we report as-is. */
1200
1201 if (u->cgroup_path)
945403e6 1202 t = empty_to_root(u->cgroup_path);
98bac605
LP		 1203
1204 return sd_bus_message_append(reply, "s", t);
1205}
1206
291d565a
LP		 1207static int append_process(sd_bus_message *reply, const char *p, pid_t pid, Set *pids) {
1208 _cleanup_free_ char *buf = NULL, *cmdline = NULL;
1209 int r;
1210
1211 assert(reply);
1212 assert(pid > 0);
1213
1214 r = set_put(pids, PID_TO_PTR(pid));
4c701096 1215 if (IN_SET(r, 0, -EEXIST))
291d565a
LP		 1216 return 0;
1217 if (r < 0)
1218 return r;
1219
1220 if (!p) {
1221 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &buf);
1222 if (r == -ESRCH)
1223 return 0;
1224 if (r < 0)
1225 return r;
1226
1227 p = buf;
1228 }
1229
09c1dcee 1230 (void) get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &cmdline);
291d565a
LP		 1231
1232 return sd_bus_message_append(reply,
1233 "(sus)",
1234 p,
1235 (uint32_t) pid,
1236 cmdline);
1237}
1238
1239static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
1240 _cleanup_closedir_ DIR *d = NULL;
1241 _cleanup_fclose_ FILE *f = NULL;
1242 int r;
1243
1244 assert(reply);
1245 assert(p);
1246
1247 r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, p, &f);
24715314 1248 if (r == -ENOENT)
291d565a
LP		 1249 return 0;
1250 if (r < 0)
1251 return r;
1252
1253 for (;;) {
1254 pid_t pid;
1255
1256 r = cg_read_pid(f, &pid);
1257 if (r < 0)
1258 return r;
1259 if (r == 0)
1260 break;
1261
1262 if (is_kernel_thread(pid) > 0)
1263 continue;
1264
1265 r = append_process(reply, p, pid, pids);
1266 if (r < 0)
1267 return r;
1268 }
1269
1270 r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, p, &d);
1271 if (r == -ENOENT)
1272 return 0;
1273 if (r < 0)
1274 return r;
1275
1276 for (;;) {
1277 _cleanup_free_ char *g = NULL, *j = NULL;
1278
1279 r = cg_read_subgroup(d, &g);
1280 if (r < 0)
1281 return r;
1282 if (r == 0)
1283 break;
1284
624e4fcf 1285 j = path_join(empty_to_root(p), g);
291d565a
LP		 1286 if (!j)
1287 return -ENOMEM;
1288
1289 r = append_cgroup(reply, j, pids);
1290 if (r < 0)
1291 return r;
1292 }
1293
1294 return 0;
1295}
1296
1297int bus_unit_method_get_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1298 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
af4fa99d 1299 _cleanup_set_free_ Set *pids = NULL;
291d565a
LP		 1300 Unit *u = userdata;
1301 pid_t pid;
1302 int r;
1303
1304 assert(message);
1305
807fa5d9
LP		 1306 r = mac_selinux_unit_access_check(u, message, "status", error);
1307 if (r < 0)
1308 return r;
1309
291d565a
LP		 1310 pids = set_new(NULL);
1311 if (!pids)
1312 return -ENOMEM;
1313
1314 r = sd_bus_message_new_method_return(message, &reply);
1315 if (r < 0)
1316 return r;
1317
1318 r = sd_bus_message_open_container(reply, 'a', "(sus)");
1319 if (r < 0)
1320 return r;
1321
1322 if (u->cgroup_path) {
1323 r = append_cgroup(reply, u->cgroup_path, pids);
1324 if (r < 0)
1325 return r;
1326 }
1327
1328 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1329 pid = unit_main_pid(u);
1330 if (pid > 0) {
1331 r = append_process(reply, NULL, pid, pids);
1332 if (r < 0)
1333 return r;
1334 }
1335
1336 pid = unit_control_pid(u);
1337 if (pid > 0) {
1338 r = append_process(reply, NULL, pid, pids);
1339 if (r < 0)
1340 return r;
1341 }
1342
1343 r = sd_bus_message_close_container(reply);
1344 if (r < 0)
1345 return r;
1346
1347 return sd_bus_send(NULL, reply, NULL);
1348}
1349
906c06f6
DM		 1350static int property_get_ip_counter(
1351 sd_bus *bus,
1352 const char *path,
1353 const char *interface,
1354 const char *property,
1355 sd_bus_message *reply,
1356 void *userdata,
1357 sd_bus_error *error) {
1358
83f18c91
LP		 1359 static const char *const table[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = {
1360 [CGROUP_IP_INGRESS_BYTES] = "IPIngressBytes",
1361 [CGROUP_IP_EGRESS_BYTES] = "IPEgressBytes",
1362 [CGROUP_IP_INGRESS_PACKETS] = "IPIngressPackets",
1363 [CGROUP_IP_EGRESS_PACKETS] = "IPEgressPackets",
1364 };
1365
1366 uint64_t value = UINT64_MAX;
906c06f6 1367 Unit *u = userdata;
83f18c91 1368 ssize_t metric;
906c06f6
DM		 1369
1370 assert(bus);
1371 assert(reply);
1372 assert(property);
1373 assert(u);
1374
83f18c91 1375 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
906c06f6
DM		 1376 (void) unit_get_ip_accounting(u, metric, &value);
1377 return sd_bus_message_append(reply, "t", value);
1378}
1379
fbe14fc9
LP		 1380static int property_get_io_counter(
1381 sd_bus *bus,
1382 const char *path,
1383 const char *interface,
1384 const char *property,
1385 sd_bus_message *reply,
1386 void *userdata,
1387 sd_bus_error *error) {
1388
1389 static const char *const table[_CGROUP_IO_ACCOUNTING_METRIC_MAX] = {
1390 [CGROUP_IO_READ_BYTES] = "IOReadBytes",
1391 [CGROUP_IO_WRITE_BYTES] = "IOWriteBytes",
1392 [CGROUP_IO_READ_OPERATIONS] = "IOReadOperations",
1393 [CGROUP_IO_WRITE_OPERATIONS] = "IOWriteOperations",
1394 };
1395
1396 uint64_t value = UINT64_MAX;
1397 Unit *u = userdata;
1398 ssize_t metric;
1399
1400 assert(bus);
1401 assert(reply);
1402 assert(property);
1403 assert(u);
1404
1405 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
1406 (void) unit_get_io_accounting(u, metric, false, &value);
1407 return sd_bus_message_append(reply, "t", value);
1408}
1409
6592b975
LP		 1410int bus_unit_method_attach_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1411
1412 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
af4fa99d 1413 _cleanup_set_free_ Set *pids = NULL;
6592b975
LP		 1414 Unit *u = userdata;
1415 const char *path;
1416 int r;
1417
1418 assert(message);
1419
1420 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1421 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1422 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1423 * subcgroup path has no effect! */
1424
1425 r = mac_selinux_unit_access_check(u, message, "start", error);
1426 if (r < 0)
1427 return r;
1428
1429 r = sd_bus_message_read(message, "s", &path);
1430 if (r < 0)
1431 return r;
1432
1433 path = empty_to_null(path);
1434 if (path) {
1435 if (!path_is_absolute(path))
1436 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not absolute: %s", path);
1437
1438 if (!path_is_normalized(path))
1439 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not normalized: %s", path);
1440 }
1441
1442 if (!unit_cgroup_delegate(u))
1443 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Process migration not available on non-delegated units.");
1444
1445 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)))
1446 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit is not active, refusing.");
1447
1448 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
1449 if (r < 0)
1450 return r;
1451
1452 r = sd_bus_message_enter_container(message, 'a', "u");
1453 if (r < 0)
1454 return r;
1455 for (;;) {
1456 uid_t process_uid, sender_uid;
1457 uint32_t upid;
1458 pid_t pid;
1459
1460 r = sd_bus_message_read(message, "u", &upid);
1461 if (r < 0)
1462 return r;
1463 if (r == 0)
1464 break;
1465
1466 if (upid == 0) {
1467 r = sd_bus_creds_get_pid(creds, &pid);
1468 if (r < 0)
1469 return r;
1470 } else
1471 pid = (uid_t) upid;
1472
1473 /* Filter out duplicates */
1474 if (set_contains(pids, PID_TO_PTR(pid)))
1475 continue;
1476
1477 /* Check if this process is suitable for attaching to this unit */
1478 r = unit_pid_attachable(u, pid, error);
1479 if (r < 0)
1480 return r;
1481
1482 /* Let's query the sender's UID, so that we can make our security decisions */
1483 r = sd_bus_creds_get_euid(creds, &sender_uid);
1484 if (r < 0)
1485 return r;
1486
874b5ad2 1487 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
6592b975
LP		 1488 * then the process' UID and the target unit's UID have to match the sender's UID */
1489 if (sender_uid != 0 && sender_uid != getuid()) {
1490 r = get_process_uid(pid, &process_uid);
1491 if (r < 0)
1492 return sd_bus_error_set_errnof(error, r, "Failed to retrieve process UID: %m");
1493
1494 if (process_uid != sender_uid)
1495 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by client's UID. Refusing.", pid);
1496 if (process_uid != u->ref_uid)
1497 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by target unit's UID. Refusing.", pid);
1498 }
1499
1500 if (!pids) {
1501 pids = set_new(NULL);
1502 if (!pids)
1503 return -ENOMEM;
1504 }
1505
1506 r = set_put(pids, PID_TO_PTR(pid));
1507 if (r < 0)
1508 return r;
1509 }
1510
1511 r = sd_bus_message_exit_container(message);
1512 if (r < 0)
1513 return r;
1514
1515 r = unit_attach_pids_to_cgroup(u, pids, path);
1516 if (r < 0)
1517 return sd_bus_error_set_errnof(error, r, "Failed to attach processes to control group: %m");
1518
1519 return sd_bus_reply_method_return(message, NULL);
1520}
1521
718db961
LP		 1522const sd_bus_vtable bus_unit_cgroup_vtable[] = {
1523 SD_BUS_VTABLE_START(0),
1524 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
98bac605 1525 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0),
934277fe 1526 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
5ad096b3 1527 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0),
047f5d63
PH		 1528 SD_BUS_PROPERTY("EffectiveCPUs", "ay", property_get_cpuset_cpus, 0, 0),
1529 SD_BUS_PROPERTY("EffectiveMemoryNodes", "ay", property_get_cpuset_mems, 0, 0),
03a7b521 1530 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0),
906c06f6
DM		 1531 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter, 0, 0),
1532 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter, 0, 0),
1533 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter, 0, 0),
1534 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter, 0, 0),
fbe14fc9
LP		 1535 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter, 0, 0),
1536 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter, 0, 0),
1537 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter, 0, 0),
1538 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter, 0, 0),
dad97f04
ZJS		 1539
1540 SD_BUS_METHOD_WITH_NAMES("GetProcesses",
1541 NULL,,
1542 "a(sus)",
1543 SD_BUS_PARAM(processes),
1544 bus_unit_method_get_processes,
1545 SD_BUS_VTABLE_UNPRIVILEGED),
1546
1547 SD_BUS_METHOD_WITH_NAMES("AttachProcesses",
1548 "sau",
1549 SD_BUS_PARAM(subcgroup)
1550 SD_BUS_PARAM(pids),
1551 NULL,,
1552 bus_unit_method_attach_processes,
1553 SD_BUS_VTABLE_UNPRIVILEGED),
1554
718db961
LP		 1555 SD_BUS_VTABLE_END
1556};
2cccbca4 1557
8f8f05a9 1558static int send_new_signal(sd_bus *bus, void *userdata) {
4afd3348 1559 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1560 _cleanup_free_ char *p = NULL;
1561 Unit *u = userdata;
1562 int r;
2cccbca4 1563
718db961
LP		 1564 assert(bus);
1565 assert(u);
2cccbca4 1566
718db961 1567 p = unit_dbus_path(u);
e861098b 1568 if (!p)
718db961 1569 return -ENOMEM;
2cccbca4 1570
718db961
LP		 1571 r = sd_bus_message_new_signal(
1572 bus,
151b9b96 1573 &m,
718db961
LP		 1574 "/org/freedesktop/systemd1",
1575 "org.freedesktop.systemd1.Manager",
151b9b96 1576 "UnitNew");
718db961
LP		 1577 if (r < 0)
1578 return r;
2cccbca4 1579
718db961
LP		 1580 r = sd_bus_message_append(m, "so", u->id, p);
1581 if (r < 0)
1582 return r;
2cccbca4 1583
8f8f05a9 1584 return sd_bus_send(bus, m, NULL);
718db961 1585}
2cccbca4 1586
8f8f05a9 1587static int send_changed_signal(sd_bus *bus, void *userdata) {
718db961
LP		 1588 _cleanup_free_ char *p = NULL;
1589 Unit *u = userdata;
1590 int r;
2cccbca4 1591
718db961
LP		 1592 assert(bus);
1593 assert(u);
2cccbca4 1594
718db961 1595 p = unit_dbus_path(u);
9ceefc81 1596 if (!p)
718db961 1597 return -ENOMEM;
2cccbca4 1598
718db961
LP		 1599 /* Send a properties changed signal. First for the specific
1600 * type, then for the generic unit. The clients may rely on
1601 * this order to get atomic behavior if needed. */
ea430986 1602
aec8de63
LP		 1603 r = sd_bus_emit_properties_changed_strv(
1604 bus, p,
21b735e7 1605 unit_dbus_interface_from_type(u->type),
aec8de63 1606 NULL);
fe7f06f1 1607 if (r < 0)
aec8de63 1608 return r;
80fbf05e 1609
fe7f06f1 1610 return sd_bus_emit_properties_changed_strv(
718db961
LP		 1611 bus, p,
1612 "org.freedesktop.systemd1.Unit",
718db961 1613 NULL);
ea430986
LP		 1614}
1615
c1e1601e 1616void bus_unit_send_change_signal(Unit *u) {
b170dd80 1617 int r;
c1e1601e 1618 assert(u);
c1e1601e 1619
ac155bb8 1620 if (u->in_dbus_queue) {
71fda00f 1621 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
ac155bb8 1622 u->in_dbus_queue = false;
c0bd0cf7 1623 }
c1e1601e 1624
ac155bb8 1625 if (!u->id)
04ade7d2
LP		 1626 return;
1627
ae572acd 1628 r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
718db961 1629 if (r < 0)
f2341e0a 1630 log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
c1e1601e 1631
718db961
LP		 1632 u->sent_dbus_new_signal = true;
1633}
c4e2ceae 1634
6fcbec6f
LP		 1635void bus_unit_send_pending_change_signal(Unit *u, bool including_new) {
1636
1637 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1638 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1639 * so that clients can follow the full state transition */
1640
1641 if (!u->in_dbus_queue) /* If not enqueued, don't bother */
1642 return;
1643
1644 if (!u->sent_dbus_new_signal && !including_new) /* If the unit was never announced, don't bother, it's fine if
1645 * the unit appears in the new state right-away (except if the
1646 * caller explicitly asked us to send it anyway) */
1647 return;
1648
1649 if (MANAGER_IS_RELOADING(u->manager)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1650 * when we are reloading. */
1651 return;
1652
1653 bus_unit_send_change_signal(u);
1654}
1655
d9e45bc3
MS		 1656int bus_unit_send_pending_freezer_message(Unit *u) {
1657 int r;
1658
1659 assert(u);
1660
1661 if (!u->pending_freezer_message)
1662 return 0;
1663
1664 r = sd_bus_send(NULL, u->pending_freezer_message, NULL);
1665 if (r < 0)
1666 log_warning_errno(r, "Failed to send queued message, ignoring: %m");
1667
1668 u->pending_freezer_message = sd_bus_message_unref(u->pending_freezer_message);
1669
1670 return 0;
1671}
1672
8f8f05a9 1673static int send_removed_signal(sd_bus *bus, void *userdata) {
4afd3348 1674 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1675 _cleanup_free_ char *p = NULL;
1676 Unit *u = userdata;
1677 int r;
c4e2ceae 1678
718db961
LP		 1679 assert(bus);
1680 assert(u);
c1e1601e 1681
718db961 1682 p = unit_dbus_path(u);
e861098b 1683 if (!p)
718db961 1684 return -ENOMEM;
c1e1601e 1685
718db961
LP		 1686 r = sd_bus_message_new_signal(
1687 bus,
151b9b96 1688 &m,
718db961
LP		 1689 "/org/freedesktop/systemd1",
1690 "org.freedesktop.systemd1.Manager",
151b9b96 1691 "UnitRemoved");
718db961
LP		 1692 if (r < 0)
1693 return r;
c1e1601e 1694
718db961
LP		 1695 r = sd_bus_message_append(m, "so", u->id, p);
1696 if (r < 0)
1697 return r;
c1e1601e 1698
8f8f05a9 1699 return sd_bus_send(bus, m, NULL);
c1e1601e
LP		 1700}
1701
1702void bus_unit_send_removed_signal(Unit *u) {
718db961 1703 int r;
c1e1601e
LP		 1704 assert(u);
1705
0dd99f86 1706 if (!u->sent_dbus_new_signal || u->in_dbus_queue)
7535cc78
LP		 1707 bus_unit_send_change_signal(u);
1708
ac155bb8 1709 if (!u->id)
04ade7d2
LP		 1710 return;
1711
ae572acd 1712 r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u);
718db961 1713 if (r < 0)
f2341e0a 1714 log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
c1e1601e 1715}
e2110e5d 1716
718db961 1717int bus_unit_queue_job(
718db961 1718 sd_bus_message *message,
cad45ba1
LP		 1719 Unit *u,
1720 JobType type,
1721 JobMode mode,
50cbaba4 1722 BusUnitQueueFlags flags,
ebcf1f97 1723 sd_bus_error *error) {
cad45ba1 1724
50cbaba4
LP		 1725 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1726 _cleanup_free_ char *job_path = NULL, *unit_path = NULL;
e57ac1b0 1727 _cleanup_set_free_ Set *affected = NULL;
50cbaba4
LP		 1728 Iterator i;
1729 Job *j, *a;
cad45ba1
LP		 1730 int r;
1731
cad45ba1
LP		 1732 assert(message);
1733 assert(u);
1734 assert(type >= 0 && type < _JOB_TYPE_MAX);
1735 assert(mode >= 0 && mode < _JOB_MODE_MAX);
1736
f596e00f
EV		 1737 r = mac_selinux_unit_access_check(
1738 u, message,
1739 job_type_to_access_method(type),
1740 error);
1741 if (r < 0)
1742 return r;
1743
50cbaba4 1744 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE) && unit_can_reload(u)) {
cad45ba1
LP		 1745 if (type == JOB_RESTART)
1746 type = JOB_RELOAD_OR_START;
1747 else if (type == JOB_TRY_RESTART)
3282591d 1748 type = JOB_TRY_RELOAD;
cad45ba1
LP		 1749 }
1750
718db961 1751 if (type == JOB_STOP &&
c4555ad8 1752 IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_ERROR, UNIT_BAD_SETTING) &&
718db961 1753 unit_active_state(u) == UNIT_INACTIVE)
ebcf1f97 1754 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
cad45ba1
LP		 1755
1756 if ((type == JOB_START && u->refuse_manual_start) ||
1757 (type == JOB_STOP && u->refuse_manual_stop) ||
3742095b 1758 (IN_SET(type, JOB_RESTART, JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)) ||
efb30ba1 1759 (type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start))
7e974e85 1760 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 1761
50cbaba4
LP		 1762 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY)) {
1763 affected = set_new(NULL);
1764 if (!affected)
1765 return -ENOMEM;
1766 }
1767
1768 r = manager_add_job(u->manager, type, u, mode, affected, error, &j);
cad45ba1 1769 if (r < 0)
ebcf1f97 1770 return r;
cad45ba1 1771
c5a97ed1
LP		 1772 r = bus_job_track_sender(j, message);
1773 if (r < 0)
1774 return r;
cad45ba1 1775
13142276
LP		 1776 /* Before we send the method reply, force out the announcement JobNew for this job */
1777 bus_job_send_pending_change_signal(j, true);
1778
50cbaba4
LP		 1779 job_path = job_dbus_path(j);
1780 if (!job_path)
1781 return -ENOMEM;
1782
1783 /* The classic response is just a job object path */
1784 if (!FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY))
1785 return sd_bus_reply_method_return(message, "o", job_path);
1786
1787 /* In verbose mode respond with the anchor job plus everything that has been affected */
1788 r = sd_bus_message_new_method_return(message, &reply);
1789 if (r < 0)
1790 return r;
1791
1792 unit_path = unit_dbus_path(j->unit);
1793 if (!unit_path)
1794 return -ENOMEM;
1795
1796 r = sd_bus_message_append(reply, "uosos",
1797 j->id, job_path,
1798 j->unit->id, unit_path,
1799 job_type_to_string(j->type));
1800 if (r < 0)
1801 return r;
1802
1803 r = sd_bus_message_open_container(reply, 'a', "(uosos)");
1804 if (r < 0)
1805 return r;
1806
1807 SET_FOREACH(a, affected, i) {
1808
1809 if (a->id == j->id)
1810 continue;
1811
1812 /* Free paths from previous iteration */
1813 job_path = mfree(job_path);
1814 unit_path = mfree(unit_path);
1815
1816 job_path = job_dbus_path(a);
1817 if (!job_path)
1818 return -ENOMEM;
1819
1820 unit_path = unit_dbus_path(a->unit);
1821 if (!unit_path)
1822 return -ENOMEM;
1823
1824 r = sd_bus_message_append(reply, "(uosos)",
1825 a->id, job_path,
1826 a->unit->id, unit_path,
1827 job_type_to_string(a->type));
1828 if (r < 0)
1829 return r;
1830 }
1831
1832 r = sd_bus_message_close_container(reply);
1833 if (r < 0)
1834 return r;
1835
1836 return sd_bus_send(NULL, reply, NULL);
cad45ba1
LP		 1837}
1838
721060d4 1839static int bus_unit_set_live_property(
9f2e86af
LP		 1840 Unit *u,
1841 const char *name,
718db961 1842 sd_bus_message *message,
2e59b241 1843 UnitWriteFlags flags,
718db961 1844 sd_bus_error *error) {
9f2e86af
LP		 1845
1846 int r;
1847
1848 assert(u);
1849 assert(name);
718db961 1850 assert(message);
9f2e86af 1851
721060d4
LP		 1852 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for transient
1853 * units that are being created). */
1854
9f2e86af 1855 if (streq(name, "Description")) {
718db961 1856 const char *d;
9f2e86af 1857
718db961
LP		 1858 r = sd_bus_message_read(message, "s", &d);
1859 if (r < 0)
1860 return r;
8aec412f 1861
2e59b241 1862 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
718db961 1863 r = unit_set_description(u, d);
8aec412f
LP		 1864 if (r < 0)
1865 return r;
b9316fb0 1866
2e59b241 1867 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Description=%s", d);
8aec412f 1868 }
9f2e86af
LP		 1869
1870 return 1;
721060d4
LP		 1871 }
1872
1873 return 0;
1874}
1875
54fcb619
ZJS		 1876static int bus_set_transient_emergency_action(
1877 Unit *u,
1878 const char *name,
1879 EmergencyAction *p,
1880 sd_bus_message *message,
1881 UnitWriteFlags flags,
1882 sd_bus_error *error) {
1883
1884 const char *s;
1885 EmergencyAction v;
1886 int r;
1887 bool system;
1888
1889 assert(p);
1890
1891 r = sd_bus_message_read(message, "s", &s);
1892 if (r < 0)
1893 return r;
1894
1895 system = MANAGER_IS_SYSTEM(u->manager);
1896 r = parse_emergency_action(s, system, &v);
db2df550 1897 if (r < 0)
54fcb619 1898 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
119f0f28 1899 r == -EOPNOTSUPP ? "%s setting invalid for manager type: %s"
54fcb619
ZJS		 1900 : "Invalid %s setting: %s",
1901 name, s);
1902
1903 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1904 *p = v;
1905 unit_write_settingf(u, flags, name,
1906 "%s=%s", name, s);
1907 }
1908
1909 return 1;
1910}
1911
7af67e9a
LP		 1912static int bus_set_transient_exit_status(
1913 Unit *u,
1914 const char *name,
1915 int *p,
1916 sd_bus_message *message,
1917 UnitWriteFlags flags,
1918 sd_bus_error *error) {
1919
1920 int32_t k;
1921 int r;
1922
1923 assert(p);
1924
1925 r = sd_bus_message_read(message, "i", &k);
1926 if (r < 0)
1927 return r;
1928
1929 if (k > 255)
1930 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Exit status must be in range 0…255 or negative.");
1931
1932 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1933 *p = k < 0 ? -1 : k;
1934
1935 if (k < 0)
1936 unit_write_settingf(u, flags, name, "%s=", name);
1937 else
1938 unit_write_settingf(u, flags, name, "%s=%i", name, k);
1939 }
1940
1941 return 1;
1942}
1943
faa781cf 1944static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode, CollectMode, collect_mode_from_string);
faa781cf
YW		 1945static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode, JobMode, job_mode_from_string);
1946
1947static int bus_set_transient_conditions(
1948 Unit *u,
1949 const char *name,
1950 Condition **list,
1951 bool is_condition,
1952 sd_bus_message *message,
1953 UnitWriteFlags flags,
1954 sd_bus_error *error) {
1955
1956 const char *type_name, *param;
1957 int trigger, negate, r;
1958 bool empty = true;
1959
1960 assert(list);
1961
1962 r = sd_bus_message_enter_container(message, 'a', "(sbbs)");
1963 if (r < 0)
1964 return r;
1965
1966 while ((r = sd_bus_message_read(message, "(sbbs)", &type_name, &trigger, &negate, &param)) > 0) {
1967 ConditionType t;
1968
1969 t = is_condition ? condition_type_from_string(type_name) : assert_type_from_string(type_name);
1970 if (t < 0)
1971 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid condition type: %s", type_name);
1972
1973 if (t != CONDITION_NULL) {
1974 if (isempty(param))
1975 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Condition parameter in %s is empty", type_name);
1976
1977 if (condition_takes_path(t) && !path_is_absolute(param))
1978 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in condition %s is not absolute: %s", type_name, param);
1979 } else
1980 param = NULL;
1981
1982 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1983 Condition *c;
1984
1985 c = condition_new(t, param, trigger, negate);
1986 if (!c)
1987 return -ENOMEM;
1988
1989 LIST_PREPEND(conditions, *list, c);
1990
1991 if (t != CONDITION_NULL)
1992 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name,
1993 "%s=%s%s%s", type_name,
1994 trigger ? "|" : "", negate ? "!" : "", param);
1995 else
1996 unit_write_settingf(u, flags, name,
1997 "%s=%s%s", type_name,
1998 trigger ? "|" : "", yes_no(!negate));
1999 }
2000
2001 empty = false;
2002 }
2003 if (r < 0)
2004 return r;
2005
2006 r = sd_bus_message_exit_container(message);
2007 if (r < 0)
2008 return r;
2009
2010 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
2011 *list = condition_free_list(*list);
2012 unit_write_settingf(u, flags, name, "%sNull=", is_condition ? "Condition" : "Assert");
2013 }
2014
2015 return 1;
2016}
2017
721060d4
LP		 2018static int bus_unit_set_transient_property(
2019 Unit *u,
2020 const char *name,
2021 sd_bus_message *message,
2022 UnitWriteFlags flags,
2023 sd_bus_error *error) {
2024
faa781cf 2025 UnitDependency d = _UNIT_DEPENDENCY_INVALID;
721060d4 2026 int r;
261420ba 2027
721060d4
LP		 2028 assert(u);
2029 assert(name);
2030 assert(message);
2031
2032 /* Handles settings when transient units are created. This settings cannot be altered anymore after the unit
2033 * has been created. */
2034
faa781cf
YW		 2035 if (streq(name, "SourcePath"))
2036 return bus_set_transient_path(u, name, &u->source_path, message, flags, error);
261420ba 2037
faa781cf
YW		 2038 if (streq(name, "StopWhenUnneeded"))
2039 return bus_set_transient_bool(u, name, &u->stop_when_unneeded, message, flags, error);
261420ba 2040
faa781cf
YW		 2041 if (streq(name, "RefuseManualStart"))
2042 return bus_set_transient_bool(u, name, &u->refuse_manual_start, message, flags, error);
261420ba 2043
faa781cf
YW		 2044 if (streq(name, "RefuseManualStop"))
2045 return bus_set_transient_bool(u, name, &u->refuse_manual_stop, message, flags, error);
c221420b 2046
faa781cf
YW		 2047 if (streq(name, "AllowIsolate"))
2048 return bus_set_transient_bool(u, name, &u->allow_isolate, message, flags, error);
5afe510c 2049
faa781cf
YW		 2050 if (streq(name, "DefaultDependencies"))
2051 return bus_set_transient_bool(u, name, &u->default_dependencies, message, flags, error);
2052
2053 if (streq(name, "OnFailureJobMode"))
2054 return bus_set_transient_job_mode(u, name, &u->on_failure_job_mode, message, flags, error);
2055
2056 if (streq(name, "IgnoreOnIsolate"))
2057 return bus_set_transient_bool(u, name, &u->ignore_on_isolate, message, flags, error);
2058
2059 if (streq(name, "JobTimeoutUSec")) {
2060 r = bus_set_transient_usec_fix_0(u, name, &u->job_timeout, message, flags, error);
2061 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags) && !u->job_running_timeout_set)
2062 u->job_running_timeout = u->job_timeout;
2063 }
2064
2065 if (streq(name, "JobRunningTimeoutUSec")) {
2066 r = bus_set_transient_usec_fix_0(u, name, &u->job_running_timeout, message, flags, error);
2067 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
2068 u->job_running_timeout_set = true;
2069
2070 return r;
2071 }
2072
2073 if (streq(name, "JobTimeoutAction"))
2074 return bus_set_transient_emergency_action(u, name, &u->job_timeout_action, message, flags, error);
2075
2076 if (streq(name, "JobTimeoutRebootArgument"))
2077 return bus_set_transient_string(u, name, &u->job_timeout_reboot_arg, message, flags, error);
2078
2079 if (streq(name, "StartLimitIntervalUSec"))
7bf081a1 2080 return bus_set_transient_usec(u, name, &u->start_ratelimit.interval, message, flags, error);
faa781cf
YW		 2081
2082 if (streq(name, "StartLimitBurst"))
7bf081a1 2083 return bus_set_transient_unsigned(u, name, &u->start_ratelimit.burst, message, flags, error);
faa781cf
YW		 2084
2085 if (streq(name, "StartLimitAction"))
2086 return bus_set_transient_emergency_action(u, name, &u->start_limit_action, message, flags, error);
2087
2088 if (streq(name, "FailureAction"))
2089 return bus_set_transient_emergency_action(u, name, &u->failure_action, message, flags, error);
2090
2091 if (streq(name, "SuccessAction"))
2092 return bus_set_transient_emergency_action(u, name, &u->success_action, message, flags, error);
2093
7af67e9a
LP		 2094 if (streq(name, "FailureActionExitStatus"))
2095 return bus_set_transient_exit_status(u, name, &u->failure_action_exit_status, message, flags, error);
2096
2097 if (streq(name, "SuccessActionExitStatus"))
2098 return bus_set_transient_exit_status(u, name, &u->success_action_exit_status, message, flags, error);
2099
faa781cf
YW		 2100 if (streq(name, "RebootArgument"))
2101 return bus_set_transient_string(u, name, &u->reboot_arg, message, flags, error);
2102
2103 if (streq(name, "CollectMode"))
2104 return bus_set_transient_collect_mode(u, name, &u->collect_mode, message, flags, error);
2105
2106 if (streq(name, "Conditions"))
2107 return bus_set_transient_conditions(u, name, &u->conditions, true, message, flags, error);
2108
2109 if (streq(name, "Asserts"))
2110 return bus_set_transient_conditions(u, name, &u->asserts, false, message, flags, error);
2111
2112 if (streq(name, "Documentation")) {
2113 _cleanup_strv_free_ char **l = NULL;
2114 char **p;
2115
2116 r = sd_bus_message_read_strv(message, &l);
5afe510c
LP		 2117 if (r < 0)
2118 return r;
2119
faa781cf
YW		 2120 STRV_FOREACH(p, l) {
2121 if (!documentation_url_is_valid(*p))
2122 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid URL in %s: %s", name, *p);
2123 }
5afe510c 2124
2e59b241 2125 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
faa781cf
YW		 2126 if (strv_isempty(l)) {
2127 u->documentation = strv_free(u->documentation);
2128 unit_write_settingf(u, flags, name, "%s=", name);
2129 } else {
2130 strv_extend_strv(&u->documentation, l, false);
2131
2132 STRV_FOREACH(p, l)
2133 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2134 }
5afe510c
LP		 2135 }
2136
2137 return 1;
2138
d79200e2
LP		 2139 } else if (streq(name, "Slice")) {
2140 Unit *slice;
c221420b 2141 const char *s;
c221420b 2142
d79200e2
LP		 2143 if (!UNIT_HAS_CGROUP_CONTEXT(u))
2144 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
2145 if (u->type == UNIT_SLICE)
2146 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
efdb0237
LP		 2147 if (unit_has_name(u, SPECIAL_INIT_SCOPE))
2148 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope");
d79200e2 2149
718db961
LP		 2150 r = sd_bus_message_read(message, "s", &s);
2151 if (r < 0)
2152 return r;
c221420b 2153
d79200e2
LP		 2154 if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
2155 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
2156
aea529e5
LP		 2157 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
2158 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
2159 * instead of manager_load_unit() on purpose, here. */
2160 r = manager_load_unit_prepare(u->manager, s, NULL, error, &slice);
d79200e2
LP		 2161 if (r < 0)
2162 return r;
c221420b 2163
d79200e2
LP		 2164 if (slice->type != UNIT_SLICE)
2165 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
b9316fb0 2166
2e59b241 2167 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
d79200e2 2168 r = unit_set_slice(u, slice);
8aec412f
LP		 2169 if (r < 0)
2170 return r;
c221420b 2171
2e59b241 2172 unit_write_settingf(u, flags|UNIT_PRIVATE, name, "Slice=%s", s);
8aec412f 2173 }
b9ec9359 2174
c221420b 2175 return 1;
d79200e2 2176
faa781cf
YW		 2177 } else if (streq(name, "RequiresMountsFor")) {
2178 _cleanup_strv_free_ char **l = NULL;
2179 char **p;
2180
2181 r = sd_bus_message_read_strv(message, &l);
2182 if (r < 0)
2183 return r;
2184
2185 STRV_FOREACH(p, l) {
b459700b
YW		 2186 path_simplify(*p, true);
2187
faa781cf
YW		 2188 if (!path_is_absolute(*p))
2189 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not absolute: %s", name, *p);
2190
b459700b
YW		 2191 if (!path_is_valid(*p))
2192 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s has invalid length: %s", name, *p);
2193
2194 if (!path_is_normalized(*p))
2195 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not normalized: %s", name, *p);
2196
faa781cf
YW		 2197 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
2198 r = unit_require_mounts_for(u, *p, UNIT_DEPENDENCY_FILE);
2199 if (r < 0)
2200 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to add required mount \"%s\": %m", *p);
7fb3ee51 2201
faa781cf
YW		 2202 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2203 }
f32b43bd 2204 }
7fb3ee51 2205
faa781cf
YW		 2206 return 1;
2207 }
2208
2209 if (streq(name, "RequiresOverridable"))
2210 d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */
2211 else if (streq(name, "RequisiteOverridable"))
2212 d = UNIT_REQUISITE; /* same here */
2213 else
2214 d = unit_dependency_from_string(name);
2215
2216 if (d >= 0) {
2217 const char *other;
2218
40430848
LP		 2219 if (!IN_SET(d,
2220 UNIT_REQUIRES,
2221 UNIT_REQUISITE,
2222 UNIT_WANTS,
2223 UNIT_BINDS_TO,
2224 UNIT_PART_OF,
2225 UNIT_CONFLICTS,
2226 UNIT_BEFORE,
2227 UNIT_AFTER,
2228 UNIT_ON_FAILURE,
2229 UNIT_PROPAGATES_RELOAD_TO,
2230 UNIT_RELOAD_PROPAGATED_FROM,
2231 UNIT_JOINS_NAMESPACE_OF))
2232 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Dependency type %s may not be created transiently.", unit_dependency_to_string(d));
2233
718db961
LP		 2234 r = sd_bus_message_enter_container(message, 'a', "s");
2235 if (r < 0)
2236 return r;
7fb3ee51 2237
718db961 2238 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
7410616c 2239 if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
718db961 2240 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
7fb3ee51 2241
2e59b241 2242 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
b9ec9359 2243 _cleanup_free_ char *label = NULL;
7fb3ee51 2244
35d8c19a 2245 r = unit_add_dependency_by_name(u, d, other, true, UNIT_DEPENDENCY_FILE);
7fb3ee51
LP		 2246 if (r < 0)
2247 return r;
2248
605405c6 2249 label = strjoin(name, "-", other);
7fb3ee51
LP		 2250 if (!label)
2251 return -ENOMEM;
2252
faa781cf 2253 unit_write_settingf(u, flags, label, "%s=%s", unit_dependency_to_string(d), other);
7fb3ee51
LP		 2254 }
2255
7fb3ee51 2256 }
718db961
LP		 2257 if (r < 0)
2258 return r;
7fb3ee51 2259
6ce270b1
LP		 2260 r = sd_bus_message_exit_container(message);
2261 if (r < 0)
2262 return r;
2263
7fb3ee51 2264 return 1;
05a98afd
LP		 2265
2266 } else if (streq(name, "AddRef")) {
2267
2268 int b;
2269
2270 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
2271 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
2272 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
2273 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
2274 * dependency type, hence let's not confuse things with that.
2275 *
5238e957 2276 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
05a98afd
LP		 2277 * the transient unit is complete, so that setting this property multiple times in the same transient
2278 * unit creation call doesn't count as individual references. */
2279
2280 r = sd_bus_message_read(message, "b", &b);
2281 if (r < 0)
2282 return r;
2283
2e59b241 2284 if (!UNIT_WRITE_FLAGS_NOOP(flags))
05a98afd
LP		 2285 u->bus_track_add = b;
2286
2287 return 1;
9f2e86af
LP		 2288 }
2289
2290 return 0;
2291}
2292
c2756a68
LP		 2293int bus_unit_set_properties(
2294 Unit *u,
718db961 2295 sd_bus_message *message,
2e59b241 2296 UnitWriteFlags flags,
c2756a68 2297 bool commit,
718db961 2298 sd_bus_error *error) {
c2756a68 2299
8e2af478 2300 bool for_real = false;
8e2af478
LP		 2301 unsigned n = 0;
2302 int r;
2303
2304 assert(u);
718db961 2305 assert(message);
8e2af478
LP		 2306
2307 /* We iterate through the array twice. First run we just check
2308 * if all passed data is valid, second run actually applies
2309 * it. This is to implement transaction-like behaviour without
2310 * actually providing full transactions. */
2311
718db961
LP		 2312 r = sd_bus_message_enter_container(message, 'a', "(sv)");
2313 if (r < 0)
2314 return r;
8e2af478 2315
8e2af478 2316 for (;;) {
8e2af478 2317 const char *name;
2e59b241 2318 UnitWriteFlags f;
8e2af478 2319
718db961
LP		 2320 r = sd_bus_message_enter_container(message, 'r', "sv");
2321 if (r < 0)
2322 return r;
2323 if (r == 0) {
2e59b241 2324 if (for_real || UNIT_WRITE_FLAGS_NOOP(flags))
8e2af478
LP		 2325 break;
2326
2327 /* Reached EOF. Let's try again, and this time for realz... */
718db961
LP		 2328 r = sd_bus_message_rewind(message, false);
2329 if (r < 0)
2330 return r;
6ce270b1 2331
8e2af478
LP		 2332 for_real = true;
2333 continue;
2334 }
2335
718db961
LP		 2336 r = sd_bus_message_read(message, "s", &name);
2337 if (r < 0)
2338 return r;
8e2af478 2339
718db961
LP		 2340 if (!UNIT_VTABLE(u)->bus_set_property)
2341 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
8e2af478 2342
718db961
LP		 2343 r = sd_bus_message_enter_container(message, 'v', NULL);
2344 if (r < 0)
2345 return r;
8e2af478 2346
2e59b241
LP		 2347 /* If not for real, then mask out the two target flags */
2348 f = for_real ? flags : (flags & ~(UNIT_RUNTIME|UNIT_PERSISTENT));
2349
2350 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, f, error);
9f2e86af 2351 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
2e59b241 2352 r = bus_unit_set_transient_property(u, name, message, f, error);
721060d4
LP		 2353 if (r == 0)
2354 r = bus_unit_set_live_property(u, name, message, f, error);
718db961
LP		 2355 if (r < 0)
2356 return r;
721060d4 2357
718db961
LP		 2358 if (r == 0)
2359 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
2360
2361 r = sd_bus_message_exit_container(message);
8e2af478
LP		 2362 if (r < 0)
2363 return r;
8e2af478 2364
718db961
LP		 2365 r = sd_bus_message_exit_container(message);
2366 if (r < 0)
2367 return r;
8e2af478
LP		 2368
2369 n += for_real;
2370 }
2371
6ce270b1
LP		 2372 r = sd_bus_message_exit_container(message);
2373 if (r < 0)
2374 return r;
2375
c2756a68 2376 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
8e2af478
LP		 2377 UNIT_VTABLE(u)->bus_commit_properties(u);
2378
241da328 2379 return n;
8e2af478 2380}
000a996d 2381
e49da001 2382int bus_unit_validate_load_state(Unit *u, sd_bus_error *error) {
6eb7c172 2383 assert(u);
000a996d 2384
e49da001 2385 /* Generates a pretty error if a unit isn't properly loaded. */
000a996d 2386
e49da001
LP		 2387 switch (u->load_state) {
2388
2389 case UNIT_LOADED:
2390 return 0;
000a996d 2391
e49da001 2392 case UNIT_NOT_FOUND:
b21d2f81 2393 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id);
000a996d 2394
c4555ad8
LP		 2395 case UNIT_BAD_SETTING:
2396 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING, "Unit %s has a bad unit file setting.", u->id);
2397
e49da001 2398 case UNIT_ERROR: /* Only show .load_error in UNIT_ERROR state */
06bed19e 2399 return sd_bus_error_set_errnof(error, u->load_error, "Unit %s failed to load properly: %m.", u->id);
e49da001
LP		 2400
2401 case UNIT_MASKED:
2402 return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id);
2403
2404 case UNIT_STUB:
2405 case UNIT_MERGED:
2406 default:
2407 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unexpected load state of unit %s", u->id);
2408 }
000a996d 2409}
05a98afd 2410
c5a97ed1 2411static int bus_unit_track_handler(sd_bus_track *t, void *userdata) {
05a98afd
LP		 2412 Unit *u = userdata;
2413
2414 assert(t);
2415 assert(u);
2416
2417 u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */
2418
e5c36295
LP		 2419 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2420 * let's see */
2421 unit_add_to_cgroup_empty_queue(u);
2422
2423 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
05a98afd 2424 unit_add_to_gc_queue(u);
e5c36295 2425
05a98afd
LP		 2426 return 0;
2427}
2428
c5a97ed1 2429static int bus_unit_allocate_bus_track(Unit *u) {
05a98afd
LP		 2430 int r;
2431
2432 assert(u);
2433
2434 if (u->bus_track)
2435 return 0;
2436
c5a97ed1 2437 r = sd_bus_track_new(u->manager->api_bus, &u->bus_track, bus_unit_track_handler, u);
05a98afd
LP		 2438 if (r < 0)
2439 return r;
2440
2441 r = sd_bus_track_set_recursive(u->bus_track, true);
2442 if (r < 0) {
2443 u->bus_track = sd_bus_track_unref(u->bus_track);
2444 return r;
2445 }
2446
2447 return 0;
2448}
2449
2450int bus_unit_track_add_name(Unit *u, const char *name) {
2451 int r;
2452
2453 assert(u);
2454
c5a97ed1 2455 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2456 if (r < 0)
2457 return r;
2458
2459 return sd_bus_track_add_name(u->bus_track, name);
2460}
2461
2462int bus_unit_track_add_sender(Unit *u, sd_bus_message *m) {
2463 int r;
2464
2465 assert(u);
2466
c5a97ed1 2467 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2468 if (r < 0)
2469 return r;
2470
2471 return sd_bus_track_add_sender(u->bus_track, m);
2472}
2473
2474int bus_unit_track_remove_sender(Unit *u, sd_bus_message *m) {
2475 assert(u);
2476
2477 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an
2478 * error */
2479 if (!u->bus_track)
2480 return -EUNATCH;
2481
2482 return sd_bus_track_remove_sender(u->bus_track, m);
2483}
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