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[thirdparty/systemd.git] / src / core / dbus-unit.c
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db9ecf05 1/* SPDX-License-Identifier: LGPL-2.1-or-later */
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"
40af3d02 8#include "bus-get-properties.h"
269e4d2d 9#include "bus-polkit.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
4562c355 105 Unit *u = userdata;
718db961
LP		 106 const char *t;
107 int r;
ea430986 108
718db961
LP		 109 assert(bus);
110 assert(reply);
4562c355 111 assert(u);
4139c1b2 112
718db961
LP		 113 r = sd_bus_message_open_container(reply, 'a', "s");
114 if (r < 0)
115 return r;
4139c1b2 116
4562c355
ZJS		 117 r = sd_bus_message_append(reply, "s", u->id);
118 if (r < 0)
119 return r;
120
90e74a66 121 SET_FOREACH(t, u->aliases) {
718db961
LP		 122 r = sd_bus_message_append(reply, "s", t);
123 if (r < 0)
124 return r;
125 }
4139c1b2 126
718db961 127 return sd_bus_message_close_container(reply);
4139c1b2
LP		 128}
129
718db961
LP		 130static int property_get_following(
131 sd_bus *bus,
132 const char *path,
133 const char *interface,
134 const char *property,
135 sd_bus_message *reply,
ebcf1f97
LP		 136 void *userdata,
137 sd_bus_error *error) {
718db961
LP		 138
139 Unit *u = userdata, *f;
8fe914ec 140
718db961
LP		 141 assert(bus);
142 assert(reply);
8fe914ec
LP		 143 assert(u);
144
a7f241db 145 f = unit_following(u);
79a60375 146 return sd_bus_message_append(reply, "s", f ? f->id : NULL);
8fe914ec
LP		 147}
148
718db961
LP		 149static int property_get_dependencies(
150 sd_bus *bus,
151 const char *path,
152 const char *interface,
153 const char *property,
154 sd_bus_message *reply,
ebcf1f97
LP		 155 void *userdata,
156 sd_bus_error *error) {
4ec9a8a4 157
d1d85471 158 Hashmap **h = userdata;
718db961 159 Unit *u;
eef85c4a 160 void *v;
718db961 161 int r;
5301be81 162
718db961
LP		 163 assert(bus);
164 assert(reply);
d1d85471 165 assert(h);
5301be81 166
718db961
LP		 167 r = sd_bus_message_open_container(reply, 'a', "s");
168 if (r < 0)
169 return r;
5301be81 170
90e74a66 171 HASHMAP_FOREACH_KEY(v, u, *h) {
718db961
LP		 172 r = sd_bus_message_append(reply, "s", u->id);
173 if (r < 0)
174 return r;
175 }
5301be81 176
718db961 177 return sd_bus_message_close_container(reply);
5301be81
LP		 178}
179
99c14018
YW		 180static int property_get_requires_mounts_for(
181 sd_bus *bus,
182 const char *path,
183 const char *interface,
184 const char *property,
185 sd_bus_message *reply,
186 void *userdata,
187 sd_bus_error *error) {
188
d1d85471 189 Hashmap **h = userdata;
99c14018
YW		 190 const char *p;
191 void *v;
192 int r;
193
194 assert(bus);
195 assert(reply);
d1d85471 196 assert(h);
99c14018
YW		 197
198 r = sd_bus_message_open_container(reply, 'a', "s");
199 if (r < 0)
200 return r;
201
90e74a66 202 HASHMAP_FOREACH_KEY(v, p, *h) {
99c14018
YW		 203 r = sd_bus_message_append(reply, "s", p);
204 if (r < 0)
205 return r;
206 }
207
208 return sd_bus_message_close_container(reply);
209}
210
d2dc52db
LP		 211static int property_get_unit_file_preset(
212 sd_bus *bus,
213 const char *path,
214 const char *interface,
215 const char *property,
216 sd_bus_message *reply,
217 void *userdata,
218 sd_bus_error *error) {
219
220 Unit *u = userdata;
221 int r;
222
223 assert(bus);
224 assert(reply);
225 assert(u);
226
227 r = unit_get_unit_file_preset(u);
228
229 return sd_bus_message_append(reply, "s",
79a60375 230 r < 0 ? NULL:
d2dc52db
LP		 231 r > 0 ? "enabled" : "disabled");
232}
233
718db961
LP		 234static int property_get_job(
235 sd_bus *bus,
236 const char *path,
237 const char *interface,
238 const char *property,
239 sd_bus_message *reply,
ebcf1f97
LP		 240 void *userdata,
241 sd_bus_error *error) {
718db961 242
f93891f3 243 _cleanup_free_ char *p = NULL;
14f7edb0 244 Job **j = userdata;
38131695 245
718db961
LP		 246 assert(bus);
247 assert(reply);
14f7edb0 248 assert(j);
38131695 249
14f7edb0 250 if (!*j)
718db961 251 return sd_bus_message_append(reply, "(uo)", 0, "/");
38131695 252
14f7edb0 253 p = job_dbus_path(*j);
718db961
LP		 254 if (!p)
255 return -ENOMEM;
38131695 256
14f7edb0 257 return sd_bus_message_append(reply, "(uo)", (*j)->id, p);
718db961 258}
38131695 259
718db961
LP		 260static int property_get_conditions(
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) {
45fb0699 268
59fccdc5
LP		 269 const char *(*to_string)(ConditionType type) = NULL;
270 Condition **list = userdata, *c;
718db961 271 int r;
45fb0699 272
718db961
LP		 273 assert(bus);
274 assert(reply);
59fccdc5
LP		 275 assert(list);
276
277 to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
45fb0699 278
718db961
LP		 279 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
280 if (r < 0)
281 return r;
45fb0699 282
59fccdc5 283 LIST_FOREACH(conditions, c, *list) {
cc50ef13
LP		 284 int tristate;
285
286 tristate =
287 c->result == CONDITION_UNTESTED ? 0 :
288 c->result == CONDITION_SUCCEEDED ? 1 : -1;
289
2c7e050f 290 r = sd_bus_message_append(reply, "(sbbsi)",
59fccdc5 291 to_string(c->type),
2c7e050f 292 c->trigger, c->negate,
cc50ef13 293 c->parameter, tristate);
718db961
LP		 294 if (r < 0)
295 return r;
45fb0699 296
718db961 297 }
52990c2e 298
718db961 299 return sd_bus_message_close_container(reply);
52990c2e
ZJS		 300}
301
718db961
LP		 302static int property_get_load_error(
303 sd_bus *bus,
304 const char *path,
305 const char *interface,
306 const char *property,
307 sd_bus_message *reply,
ebcf1f97
LP		 308 void *userdata,
309 sd_bus_error *error) {
52990c2e 310
4afd3348 311 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
fd1e3fd8
LP		 312 Unit *u = userdata;
313 int r;
52990c2e 314
718db961
LP		 315 assert(bus);
316 assert(reply);
fd1e3fd8 317 assert(u);
52990c2e 318
fd1e3fd8
LP		 319 r = bus_unit_validate_load_state(u, &e);
320 if (r < 0)
321 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
52990c2e 322
fd1e3fd8 323 return sd_bus_message_append(reply, "(ss)", NULL, NULL);
52990c2e
ZJS		 324}
325
ff68472a
ZJS		 326static int property_get_markers(
327 sd_bus *bus,
328 const char *path,
329 const char *interface,
330 const char *property,
331 sd_bus_message *reply,
332 void *userdata,
333 sd_bus_error *error) {
334
335 unsigned *markers = userdata;
336 int r;
337
338 assert(bus);
339 assert(reply);
340 assert(markers);
341
342 r = sd_bus_message_open_container(reply, 'a', "s");
343 if (r < 0)
344 return r;
345
346 /* Make sure out values fit in the bitfield. */
347 assert_cc(_UNIT_MARKER_MAX <= sizeof(((Unit){}).markers) * 8);
348
349 for (UnitMarker m = 0; m < _UNIT_MARKER_MAX; m++)
350 if (FLAGS_SET(*markers, 1u << m)) {
351 r = sd_bus_message_append(reply, "s", unit_marker_to_string(m));
352 if (r < 0)
353 return r;
354 }
355
356 return sd_bus_message_close_container(reply);
357}
358
50cbaba4
LP		 359static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
360 [JOB_START] = N_("Authentication is required to start '$(unit)'."),
361 [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
362 [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
363 [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
364 [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
365};
366
1d22e906 367int bus_unit_method_start_generic(
1d22e906
LP		 368 sd_bus_message *message,
369 Unit *u,
370 JobType job_type,
371 bool reload_if_possible,
372 sd_bus_error *error) {
373
e59ba56d 374 const char *smode, *verb;
718db961
LP		 375 JobMode mode;
376 int r;
9f39404c 377
718db961 378 assert(message);
9f39404c 379 assert(u);
718db961 380 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
9f39404c 381
61ea63f1
EV		 382 r = mac_selinux_unit_access_check(
383 u, message,
94bd7323
EV		 384 job_type_to_access_method(job_type),
385 error);
1d22e906
LP		 386 if (r < 0)
387 return r;
388
718db961
LP		 389 r = sd_bus_message_read(message, "s", &smode);
390 if (r < 0)
ebcf1f97 391 return r;
9f39404c 392
718db961
LP		 393 mode = job_mode_from_string(smode);
394 if (mode < 0)
ebcf1f97 395 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
9f39404c 396
88ced61b 397 if (reload_if_possible)
e59ba56d 398 verb = strjoina("reload-or-", job_type_to_string(job_type));
88ced61b 399 else
e59ba56d 400 verb = job_type_to_string(job_type);
88ced61b
MC		 401
402 r = bus_verify_manage_units_async_full(
403 u,
404 verb,
405 CAP_SYS_ADMIN,
ebfb1b57 406 polkit_message_for_job[job_type],
05a98afd 407 true,
88ced61b
MC		 408 message,
409 error);
1d22e906
LP		 410 if (r < 0)
411 return r;
412 if (r == 0)
413 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
414
50cbaba4
LP		 415 return bus_unit_queue_job(message, u, job_type, mode,
416 reload_if_possible ? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE : 0, error);
9f39404c
LP		 417}
418
19070062
LP		 419static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
420 return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
718db961 421}
b548631a 422
19070062
LP		 423static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
424 return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
718db961
LP		 425}
426
19070062
LP		 427static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
428 return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
718db961 429}
0a524ba7 430
19070062
LP		 431static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
432 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
718db961 433}
8a0867d6 434
19070062
LP		 435static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
436 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
718db961 437}
cad45ba1 438
19070062
LP		 439static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
440 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
718db961 441}
8a0867d6 442
19070062
LP		 443static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
444 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
718db961 445}
8a0867d6 446
50cbaba4
LP		 447int bus_unit_method_enqueue_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
448 BusUnitQueueFlags flags = BUS_UNIT_QUEUE_VERBOSE_REPLY;
449 const char *jtype, *smode;
450 Unit *u = userdata;
451 JobType type;
452 JobMode mode;
453 int r;
454
455 assert(message);
456 assert(u);
457
458 r = sd_bus_message_read(message, "ss", &jtype, &smode);
459 if (r < 0)
460 return r;
461
462 /* Parse the two magic reload types "reload-or-…" manually */
463 if (streq(jtype, "reload-or-restart")) {
464 type = JOB_RESTART;
465 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
466 } else if (streq(jtype, "reload-or-try-restart")) {
467 type = JOB_TRY_RESTART;
468 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
469 } else {
470 /* And the rest generically */
471 type = job_type_from_string(jtype);
472 if (type < 0)
473 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job type %s invalid", jtype);
474 }
475
476 mode = job_mode_from_string(smode);
477 if (mode < 0)
478 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
479
480 r = mac_selinux_unit_access_check(
481 u, message,
482 job_type_to_access_method(type),
483 error);
484 if (r < 0)
485 return r;
486
487 r = bus_verify_manage_units_async_full(
488 u,
489 jtype,
490 CAP_SYS_ADMIN,
491 polkit_message_for_job[type],
492 true,
493 message,
494 error);
495 if (r < 0)
496 return r;
497 if (r == 0)
498 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
499
500 return bus_unit_queue_job(message, u, type, mode, flags, error);
501}
502
19070062 503int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 504 Unit *u = userdata;
505 const char *swho;
506 int32_t signo;
507 KillWho who;
508 int r;
5632e374 509
718db961
LP		 510 assert(message);
511 assert(u);
cad45ba1 512
1d22e906 513 r = mac_selinux_unit_access_check(u, message, "stop", error);
283868e1
SW		 514 if (r < 0)
515 return r;
283868e1 516
718db961
LP		 517 r = sd_bus_message_read(message, "si", &swho, &signo);
518 if (r < 0)
ebcf1f97 519 return r;
718db961
LP		 520
521 if (isempty(swho))
522 who = KILL_ALL;
523 else {
524 who = kill_who_from_string(swho);
525 if (who < 0)
ebcf1f97 526 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
718db961 527 }
5632e374 528
6eb7c172 529 if (!SIGNAL_VALID(signo))
ebcf1f97 530 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
8e2af478 531
88ced61b
MC		 532 r = bus_verify_manage_units_async_full(
533 u,
534 "kill",
535 CAP_KILL,
1d445eda 536 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
05a98afd 537 true,
88ced61b
MC		 538 message,
539 error);
ebcf1f97
LP		 540 if (r < 0)
541 return r;
1d22e906
LP		 542 if (r == 0)
543 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
8e2af478 544
ebcf1f97 545 r = unit_kill(u, who, signo, error);
718db961 546 if (r < 0)
ebcf1f97 547 return r;
8e2af478 548
df2d202e 549 return sd_bus_reply_method_return(message, NULL);
718db961 550}
8e2af478 551
19070062 552int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961 553 Unit *u = userdata;
ebcf1f97 554 int r;
b548631a 555
718db961
LP		 556 assert(message);
557 assert(u);
b548631a 558
1d22e906 559 r = mac_selinux_unit_access_check(u, message, "reload", error);
283868e1
SW		 560 if (r < 0)
561 return r;
283868e1 562
88ced61b
MC		 563 r = bus_verify_manage_units_async_full(
564 u,
565 "reset-failed",
566 CAP_SYS_ADMIN,
567 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
05a98afd 568 true,
88ced61b
MC		 569 message,
570 error);
ebcf1f97
LP		 571 if (r < 0)
572 return r;
1d22e906
LP		 573 if (r == 0)
574 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
b548631a 575
718db961 576 unit_reset_failed(u);
b548631a 577
df2d202e 578 return sd_bus_reply_method_return(message, NULL);
ea430986
LP		 579}
580
19070062 581int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 582 Unit *u = userdata;
583 int runtime, r;
ea430986 584
ea430986 585 assert(message);
718db961 586 assert(u);
80fbf05e 587
1d22e906 588 r = mac_selinux_unit_access_check(u, message, "start", error);
283868e1
SW		 589 if (r < 0)
590 return r;
283868e1 591
718db961
LP		 592 r = sd_bus_message_read(message, "b", &runtime);
593 if (r < 0)
ebcf1f97 594 return r;
2cccbca4 595
88ced61b
MC		 596 r = bus_verify_manage_units_async_full(
597 u,
598 "set-property",
599 CAP_SYS_ADMIN,
600 N_("Authentication is required to set properties on '$(unit)'."),
05a98afd 601 true,
88ced61b
MC		 602 message,
603 error);
ebcf1f97
LP		 604 if (r < 0)
605 return r;
1d22e906
LP		 606 if (r == 0)
607 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
cad45ba1 608
ebcf1f97 609 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
718db961 610 if (r < 0)
ebcf1f97 611 return r;
2cccbca4 612
df2d202e 613 return sd_bus_reply_method_return(message, NULL);
718db961 614}
2cccbca4 615
05a98afd
LP		 616int bus_unit_method_ref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
617 Unit *u = userdata;
618 int r;
619
620 assert(message);
621 assert(u);
622
623 r = mac_selinux_unit_access_check(u, message, "start", error);
624 if (r < 0)
625 return r;
626
627 r = bus_verify_manage_units_async_full(
628 u,
629 "ref",
630 CAP_SYS_ADMIN,
631 NULL,
632 false,
633 message,
634 error);
635 if (r < 0)
636 return r;
637 if (r == 0)
638 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
639
640 r = bus_unit_track_add_sender(u, message);
641 if (r < 0)
642 return r;
643
644 return sd_bus_reply_method_return(message, NULL);
645}
646
647int bus_unit_method_unref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
648 Unit *u = userdata;
649 int r;
650
651 assert(message);
652 assert(u);
653
654 r = bus_unit_track_remove_sender(u, message);
655 if (r == -EUNATCH)
656 return sd_bus_error_setf(error, BUS_ERROR_NOT_REFERENCED, "Unit has not been referenced yet.");
657 if (r < 0)
658 return r;
659
660 return sd_bus_reply_method_return(message, NULL);
661}
662
4d3bac56
LP		 663int bus_unit_method_clean(sd_bus_message *message, void *userdata, sd_bus_error *error) {
664 ExecCleanMask mask = 0;
665 Unit *u = userdata;
666 int r;
667
668 assert(message);
669 assert(u);
670
671 r = mac_selinux_unit_access_check(u, message, "stop", error);
672 if (r < 0)
673 return r;
674
675 r = sd_bus_message_enter_container(message, 'a', "s");
676 if (r < 0)
677 return r;
678
679 for (;;) {
680 const char *i;
681
682 r = sd_bus_message_read(message, "s", &i);
683 if (r < 0)
684 return r;
685 if (r == 0)
686 break;
687
688 if (streq(i, "all"))
689 mask |= EXEC_CLEAN_ALL;
690 else {
691 ExecDirectoryType t;
692
693 t = exec_resource_type_from_string(i);
694 if (t < 0)
695 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid resource type: %s", i);
696
697 mask |= 1U << t;
698 }
699 }
700
701 r = sd_bus_message_exit_container(message);
702 if (r < 0)
703 return r;
704
705 r = bus_verify_manage_units_async_full(
706 u,
707 "clean",
708 CAP_DAC_OVERRIDE,
709 N_("Authentication is required to delete files and directories associated with '$(unit)'."),
710 true,
711 message,
712 error);
713 if (r < 0)
714 return r;
715 if (r == 0)
716 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
717
718 r = unit_clean(u, mask);
719 if (r == -EOPNOTSUPP)
720 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not supporting cleaning.", u->id);
721 if (r == -EUNATCH)
722 return sd_bus_error_setf(error, BUS_ERROR_NOTHING_TO_CLEAN, "No matching resources found.");
723 if (r == -EBUSY)
724 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit is not inactive or has pending job.");
725 if (r < 0)
726 return r;
727
728 return sd_bus_reply_method_return(message, NULL);
729}
730
d9e45bc3
MS		 731static int bus_unit_method_freezer_generic(sd_bus_message *message, void *userdata, sd_bus_error *error, FreezerAction action) {
732 const char* perm;
733 int (*method)(Unit*);
734 Unit *u = userdata;
735 bool reply_no_delay = false;
736 int r;
737
738 assert(message);
739 assert(u);
740 assert(IN_SET(action, FREEZER_FREEZE, FREEZER_THAW));
741
742 if (action == FREEZER_FREEZE) {
743 perm = "stop";
744 method = unit_freeze;
745 } else {
746 perm = "start";
747 method = unit_thaw;
748 }
749
750 r = mac_selinux_unit_access_check(u, message, perm, error);
751 if (r < 0)
752 return r;
753
754 r = bus_verify_manage_units_async_full(
755 u,
756 perm,
757 CAP_SYS_ADMIN,
758 N_("Authentication is required to freeze or thaw the processes of '$(unit)' unit."),
759 true,
760 message,
761 error);
762 if (r < 0)
763 return r;
764 if (r == 0)
765 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
766
767 r = method(u);
768 if (r == -EOPNOTSUPP)
769 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not support freezing.", u->id);
770 if (r == -EBUSY)
771 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit has a pending job.");
772 if (r == -EHOSTDOWN)
773 return sd_bus_error_setf(error, BUS_ERROR_UNIT_INACTIVE, "Unit is inactive.");
774 if (r == -EALREADY)
775 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Previously requested freezer operation for unit '%s' is still in progress.", u->id);
776 if (r < 0)
777 return r;
778 if (r == 0)
779 reply_no_delay = true;
780
781 assert(!u->pending_freezer_message);
782
783 r = sd_bus_message_new_method_return(message, &u->pending_freezer_message);
784 if (r < 0)
785 return r;
786
787 if (reply_no_delay) {
788 r = bus_unit_send_pending_freezer_message(u);
789 if (r < 0)
790 return r;
791 }
792
793 return 1;
794}
795
796int bus_unit_method_thaw(sd_bus_message *message, void *userdata, sd_bus_error *error) {
797 return bus_unit_method_freezer_generic(message, userdata, error, FREEZER_THAW);
798}
799
800int bus_unit_method_freeze(sd_bus_message *message, void *userdata, sd_bus_error *error) {
801 return bus_unit_method_freezer_generic(message, userdata, error, FREEZER_FREEZE);
802}
803
bedea99d
LP		 804static int property_get_refs(
805 sd_bus *bus,
806 const char *path,
807 const char *interface,
808 const char *property,
809 sd_bus_message *reply,
810 void *userdata,
811 sd_bus_error *error) {
812
813 Unit *u = userdata;
bedea99d
LP		 814 int r;
815
816 assert(bus);
817 assert(reply);
818
819 r = sd_bus_message_open_container(reply, 'a', "s");
820 if (r < 0)
821 return r;
822
95d1e21e
ZJS		 823 for (const char *i = sd_bus_track_first(u->bus_track); i; i = sd_bus_track_next(u->bus_track)) {
824 int c;
bedea99d
LP		 825
826 c = sd_bus_track_count_name(u->bus_track, i);
827 if (c < 0)
828 return c;
829
830 /* Add the item multiple times if the ref count for each is above 1 */
95d1e21e 831 for (int k = 0; k < c; k++) {
bedea99d
LP		 832 r = sd_bus_message_append(reply, "s", i);
833 if (r < 0)
834 return r;
835 }
836 }
837
838 return sd_bus_message_close_container(reply);
839}
840
718db961
LP		 841const sd_bus_vtable bus_unit_vtable[] = {
842 SD_BUS_VTABLE_START(0),
843
556089dc 844 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
4562c355 845 SD_BUS_PROPERTY("Names", "as", property_get_names, 0, SD_BUS_VTABLE_PROPERTY_CONST),
718db961 846 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
556089dc 847 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 848 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 849 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
850 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
851 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
852 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
be7d9ff7 853 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 854 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
855 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
856 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
857 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
858 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
859 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
860 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
861 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
862 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
863 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
864 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
865 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
866 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
99c14018 867 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 868 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
869 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
870 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 871 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
d9e45bc3 872 SD_BUS_PROPERTY("FreezerState", "s", property_get_freezer_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 873 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 874 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
875 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
876 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 877 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
d2dc52db 878 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0),
a483fb59 879 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit, state_change_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961
LP		 880 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
881 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
882 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
883 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 884 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
885 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
886 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
887 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
4d3bac56 888 SD_BUS_PROPERTY("CanClean", "as", property_get_can_clean, 0, SD_BUS_VTABLE_PROPERTY_CONST),
d9e45bc3 889 SD_BUS_PROPERTY("CanFreeze", "b", property_get_can_freeze, 0, SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 890 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, offsetof(Unit, job), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 891 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
892 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
893 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
894 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
895 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
896 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
897 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 898 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
ff68472a 899 SD_BUS_PROPERTY("Markers", "as", property_get_markers, offsetof(Unit, markers), 0),
556089dc 900 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
a2df3ea4 901 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_running_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 902 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
f189ab18 903 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 904 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 905 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 906 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 907 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
e18f8852
LP		 908 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
909 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
fd1e3fd8 910 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 911 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
f5869324 912 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool, offsetof(Unit, perpetual), SD_BUS_VTABLE_PROPERTY_CONST),
7bf081a1
ZJS		 913 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
914 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_ratelimit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 915 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
53c35a76 916 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 917 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int, offsetof(Unit, failure_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
e7dfbb4e 918 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action, offsetof(Unit, success_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 919 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int, offsetof(Unit, success_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
6bf0f408 920 SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
af92c603 921 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
641e0d7a 922 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), SD_BUS_VTABLE_PROPERTY_CONST),
bedea99d 923 SD_BUS_PROPERTY("Refs", "as", property_get_refs, 0, 0),
718db961 924
dad97f04
ZJS		 925 SD_BUS_METHOD_WITH_NAMES("Start",
926 "s",
927 SD_BUS_PARAM(mode),
928 "o",
929 SD_BUS_PARAM(job),
930 method_start,
931 SD_BUS_VTABLE_UNPRIVILEGED),
932 SD_BUS_METHOD_WITH_NAMES("Stop",
933 "s",
934 SD_BUS_PARAM(mode),
935 "o",
936 SD_BUS_PARAM(job),
937 method_stop,
938 SD_BUS_VTABLE_UNPRIVILEGED),
939 SD_BUS_METHOD_WITH_NAMES("Reload",
940 "s",
941 SD_BUS_PARAM(mode),
942 "o",
943 SD_BUS_PARAM(job),
944 method_reload,
945 SD_BUS_VTABLE_UNPRIVILEGED),
946 SD_BUS_METHOD_WITH_NAMES("Restart",
947 "s",
948 SD_BUS_PARAM(mode),
949 "o",
950 SD_BUS_PARAM(job),
951 method_restart,
952 SD_BUS_VTABLE_UNPRIVILEGED),
953 SD_BUS_METHOD_WITH_NAMES("TryRestart",
954 "s",
955 SD_BUS_PARAM(mode),
956 "o",
957 SD_BUS_PARAM(job),
958 method_try_restart,
959 SD_BUS_VTABLE_UNPRIVILEGED),
960 SD_BUS_METHOD_WITH_NAMES("ReloadOrRestart",
961 "s",
962 SD_BUS_PARAM(mode),
963 "o",
964 SD_BUS_PARAM(job),
965 method_reload_or_restart,
966 SD_BUS_VTABLE_UNPRIVILEGED),
967 SD_BUS_METHOD_WITH_NAMES("ReloadOrTryRestart",
968 "s",
969 SD_BUS_PARAM(mode),
970 "o",
971 SD_BUS_PARAM(job),
972 method_reload_or_try_restart,
973 SD_BUS_VTABLE_UNPRIVILEGED),
974 SD_BUS_METHOD_WITH_NAMES("EnqueueJob",
975 "ss",
976 SD_BUS_PARAM(job_type)
977 SD_BUS_PARAM(job_mode),
978 "uososa(uosos)",
979 SD_BUS_PARAM(job_id)
980 SD_BUS_PARAM(job_path)
981 SD_BUS_PARAM(unit_id)
982 SD_BUS_PARAM(unit_path)
983 SD_BUS_PARAM(job_type)
984 SD_BUS_PARAM(affected_jobs),
985 bus_unit_method_enqueue_job,
986 SD_BUS_VTABLE_UNPRIVILEGED),
987 SD_BUS_METHOD_WITH_NAMES("Kill",
988 "si",
989 SD_BUS_PARAM(whom)
990 SD_BUS_PARAM(signal),
991 NULL,,
992 bus_unit_method_kill,
993 SD_BUS_VTABLE_UNPRIVILEGED),
994 SD_BUS_METHOD("ResetFailed",
995 NULL,
996 NULL,
997 bus_unit_method_reset_failed,
998 SD_BUS_VTABLE_UNPRIVILEGED),
999 SD_BUS_METHOD_WITH_NAMES("SetProperties",
1000 "ba(sv)",
1001 SD_BUS_PARAM(runtime)
1002 SD_BUS_PARAM(properties),
1003 NULL,,
1004 bus_unit_method_set_properties,
1005 SD_BUS_VTABLE_UNPRIVILEGED),
1006 SD_BUS_METHOD("Ref",
1007 NULL,
1008 NULL,
1009 bus_unit_method_ref,
1010 SD_BUS_VTABLE_UNPRIVILEGED),
1011 SD_BUS_METHOD("Unref",
1012 NULL,
1013 NULL,
1014 bus_unit_method_unref,
1015 SD_BUS_VTABLE_UNPRIVILEGED),
1016 SD_BUS_METHOD_WITH_NAMES("Clean",
1017 "as",
1018 SD_BUS_PARAM(mask),
1019 NULL,,
1020 bus_unit_method_clean,
1021 SD_BUS_VTABLE_UNPRIVILEGED),
d9e45bc3
MS		 1022 SD_BUS_METHOD("Freeze",
1023 NULL,
1024 NULL,
1025 bus_unit_method_freeze,
1026 SD_BUS_VTABLE_UNPRIVILEGED),
1027 SD_BUS_METHOD("Thaw",
1028 NULL,
1029 NULL,
1030 bus_unit_method_thaw,
1031 SD_BUS_VTABLE_UNPRIVILEGED),
718db961 1032
92c23c5a
YW		 1033 /* For dependency types we don't support anymore always return an empty array */
1034 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1035 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1036 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1037 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1038 /* Obsolete alias names */
7bf081a1
ZJS		 1039 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
1040 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
dad97f04 1041
718db961
LP		 1042 SD_BUS_VTABLE_END
1043};
2cccbca4 1044
718db961
LP		 1045static int property_get_slice(
1046 sd_bus *bus,
1047 const char *path,
1048 const char *interface,
1049 const char *property,
1050 sd_bus_message *reply,
ebcf1f97
LP		 1051 void *userdata,
1052 sd_bus_error *error) {
2cccbca4 1053
718db961 1054 Unit *u = userdata;
2cccbca4 1055
718db961
LP		 1056 assert(bus);
1057 assert(reply);
1058 assert(u);
2cccbca4 1059
718db961
LP		 1060 return sd_bus_message_append(reply, "s", unit_slice_name(u));
1061}
2cccbca4 1062
934277fe
LP		 1063static int property_get_current_memory(
1064 sd_bus *bus,
1065 const char *path,
1066 const char *interface,
1067 const char *property,
1068 sd_bus_message *reply,
1069 void *userdata,
1070 sd_bus_error *error) {
1071
f5fbe71d 1072 uint64_t sz = UINT64_MAX;
5ad096b3 1073 Unit *u = userdata;
934277fe
LP		 1074 int r;
1075
1076 assert(bus);
1077 assert(reply);
1078 assert(u);
1079
5ad096b3
LP		 1080 r = unit_get_memory_current(u, &sz);
1081 if (r < 0 && r != -ENODATA)
f2341e0a 1082 log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m");
934277fe 1083
5ad096b3
LP		 1084 return sd_bus_message_append(reply, "t", sz);
1085}
934277fe 1086
03a7b521
LP		 1087static int property_get_current_tasks(
1088 sd_bus *bus,
1089 const char *path,
1090 const char *interface,
1091 const char *property,
1092 sd_bus_message *reply,
1093 void *userdata,
1094 sd_bus_error *error) {
1095
f5fbe71d 1096 uint64_t cn = UINT64_MAX;
03a7b521
LP		 1097 Unit *u = userdata;
1098 int r;
1099
1100 assert(bus);
1101 assert(reply);
1102 assert(u);
1103
1104 r = unit_get_tasks_current(u, &cn);
1105 if (r < 0 && r != -ENODATA)
1106 log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m");
1107
1108 return sd_bus_message_append(reply, "t", cn);
1109}
1110
5ad096b3
LP		 1111static int property_get_cpu_usage(
1112 sd_bus *bus,
1113 const char *path,
1114 const char *interface,
1115 const char *property,
1116 sd_bus_message *reply,
1117 void *userdata,
1118 sd_bus_error *error) {
934277fe 1119
f5fbe71d 1120 nsec_t ns = NSEC_INFINITY;
5ad096b3
LP		 1121 Unit *u = userdata;
1122 int r;
1123
1124 assert(bus);
1125 assert(reply);
1126 assert(u);
1127
1128 r = unit_get_cpu_usage(u, &ns);
1129 if (r < 0 && r != -ENODATA)
f2341e0a 1130 log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m");
5ad096b3
LP		 1131
1132 return sd_bus_message_append(reply, "t", ns);
934277fe
LP		 1133}
1134
047f5d63
PH		 1135static int property_get_cpuset_cpus(
1136 sd_bus *bus,
1137 const char *path,
1138 const char *interface,
1139 const char *property,
1140 sd_bus_message *reply,
1141 void *userdata,
1142 sd_bus_error *error) {
1143
1144 Unit *u = userdata;
1145 _cleanup_(cpu_set_reset) CPUSet cpus = {};
1146 _cleanup_free_ uint8_t *array = NULL;
1147 size_t allocated;
1148
1149 assert(bus);
1150 assert(reply);
1151 assert(u);
1152
1153 (void) unit_get_cpuset(u, &cpus, "cpuset.cpus.effective");
1154 (void) cpu_set_to_dbus(&cpus, &array, &allocated);
1155 return sd_bus_message_append_array(reply, 'y', array, allocated);
1156}
1157
1158static int property_get_cpuset_mems(
1159 sd_bus *bus,
1160 const char *path,
1161 const char *interface,
1162 const char *property,
1163 sd_bus_message *reply,
1164 void *userdata,
1165 sd_bus_error *error) {
1166
1167 Unit *u = userdata;
1168 _cleanup_(cpu_set_reset) CPUSet mems = {};
1169 _cleanup_free_ uint8_t *array = NULL;
1170 size_t allocated;
1171
1172 assert(bus);
1173 assert(reply);
1174 assert(u);
1175
1176 (void) unit_get_cpuset(u, &mems, "cpuset.mems.effective");
1177 (void) cpu_set_to_dbus(&mems, &array, &allocated);
1178 return sd_bus_message_append_array(reply, 'y', array, allocated);
1179}
1180
98bac605
LP		 1181static int property_get_cgroup(
1182 sd_bus *bus,
1183 const char *path,
1184 const char *interface,
1185 const char *property,
1186 sd_bus_message *reply,
1187 void *userdata,
1188 sd_bus_error *error) {
1189
1190 Unit *u = userdata;
79a60375 1191 const char *t = NULL;
98bac605
LP		 1192
1193 assert(bus);
1194 assert(reply);
1195 assert(u);
1196
1197 /* Three cases: a) u->cgroup_path is NULL, in which case the
1198 * unit has no control group, which we report as the empty
1199 * string. b) u->cgroup_path is the empty string, which
1200 * indicates the root cgroup, which we report as "/". c) all
1201 * other cases we report as-is. */
1202
1203 if (u->cgroup_path)
945403e6 1204 t = empty_to_root(u->cgroup_path);
98bac605
LP		 1205
1206 return sd_bus_message_append(reply, "s", t);
1207}
1208
291d565a
LP		 1209static int append_process(sd_bus_message *reply, const char *p, pid_t pid, Set *pids) {
1210 _cleanup_free_ char *buf = NULL, *cmdline = NULL;
1211 int r;
1212
1213 assert(reply);
1214 assert(pid > 0);
1215
1216 r = set_put(pids, PID_TO_PTR(pid));
4c701096 1217 if (IN_SET(r, 0, -EEXIST))
291d565a
LP		 1218 return 0;
1219 if (r < 0)
1220 return r;
1221
1222 if (!p) {
1223 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &buf);
1224 if (r == -ESRCH)
1225 return 0;
1226 if (r < 0)
1227 return r;
1228
1229 p = buf;
1230 }
1231
09c1dcee 1232 (void) get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &cmdline);
291d565a
LP		 1233
1234 return sd_bus_message_append(reply,
1235 "(sus)",
1236 p,
1237 (uint32_t) pid,
1238 cmdline);
1239}
1240
1241static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
1242 _cleanup_closedir_ DIR *d = NULL;
1243 _cleanup_fclose_ FILE *f = NULL;
1244 int r;
1245
1246 assert(reply);
1247 assert(p);
1248
1249 r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, p, &f);
24715314 1250 if (r == -ENOENT)
291d565a
LP		 1251 return 0;
1252 if (r < 0)
1253 return r;
1254
1255 for (;;) {
1256 pid_t pid;
1257
1258 r = cg_read_pid(f, &pid);
1259 if (r < 0)
1260 return r;
1261 if (r == 0)
1262 break;
1263
1264 if (is_kernel_thread(pid) > 0)
1265 continue;
1266
1267 r = append_process(reply, p, pid, pids);
1268 if (r < 0)
1269 return r;
1270 }
1271
1272 r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, p, &d);
1273 if (r == -ENOENT)
1274 return 0;
1275 if (r < 0)
1276 return r;
1277
1278 for (;;) {
1279 _cleanup_free_ char *g = NULL, *j = NULL;
1280
1281 r = cg_read_subgroup(d, &g);
1282 if (r < 0)
1283 return r;
1284 if (r == 0)
1285 break;
1286
624e4fcf 1287 j = path_join(empty_to_root(p), g);
291d565a
LP		 1288 if (!j)
1289 return -ENOMEM;
1290
1291 r = append_cgroup(reply, j, pids);
1292 if (r < 0)
1293 return r;
1294 }
1295
1296 return 0;
1297}
1298
1299int bus_unit_method_get_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1300 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
af4fa99d 1301 _cleanup_set_free_ Set *pids = NULL;
291d565a
LP		 1302 Unit *u = userdata;
1303 pid_t pid;
1304 int r;
1305
1306 assert(message);
1307
807fa5d9
LP		 1308 r = mac_selinux_unit_access_check(u, message, "status", error);
1309 if (r < 0)
1310 return r;
1311
291d565a
LP		 1312 pids = set_new(NULL);
1313 if (!pids)
1314 return -ENOMEM;
1315
1316 r = sd_bus_message_new_method_return(message, &reply);
1317 if (r < 0)
1318 return r;
1319
1320 r = sd_bus_message_open_container(reply, 'a', "(sus)");
1321 if (r < 0)
1322 return r;
1323
1324 if (u->cgroup_path) {
1325 r = append_cgroup(reply, u->cgroup_path, pids);
1326 if (r < 0)
1327 return r;
1328 }
1329
1330 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1331 pid = unit_main_pid(u);
1332 if (pid > 0) {
1333 r = append_process(reply, NULL, pid, pids);
1334 if (r < 0)
1335 return r;
1336 }
1337
1338 pid = unit_control_pid(u);
1339 if (pid > 0) {
1340 r = append_process(reply, NULL, pid, pids);
1341 if (r < 0)
1342 return r;
1343 }
1344
1345 r = sd_bus_message_close_container(reply);
1346 if (r < 0)
1347 return r;
1348
1349 return sd_bus_send(NULL, reply, NULL);
1350}
1351
906c06f6
DM		 1352static int property_get_ip_counter(
1353 sd_bus *bus,
1354 const char *path,
1355 const char *interface,
1356 const char *property,
1357 sd_bus_message *reply,
1358 void *userdata,
1359 sd_bus_error *error) {
1360
83f18c91
LP		 1361 static const char *const table[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = {
1362 [CGROUP_IP_INGRESS_BYTES] = "IPIngressBytes",
1363 [CGROUP_IP_EGRESS_BYTES] = "IPEgressBytes",
1364 [CGROUP_IP_INGRESS_PACKETS] = "IPIngressPackets",
1365 [CGROUP_IP_EGRESS_PACKETS] = "IPEgressPackets",
1366 };
1367
1368 uint64_t value = UINT64_MAX;
906c06f6 1369 Unit *u = userdata;
83f18c91 1370 ssize_t metric;
906c06f6
DM		 1371
1372 assert(bus);
1373 assert(reply);
1374 assert(property);
1375 assert(u);
1376
83f18c91 1377 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
906c06f6
DM		 1378 (void) unit_get_ip_accounting(u, metric, &value);
1379 return sd_bus_message_append(reply, "t", value);
1380}
1381
fbe14fc9
LP		 1382static int property_get_io_counter(
1383 sd_bus *bus,
1384 const char *path,
1385 const char *interface,
1386 const char *property,
1387 sd_bus_message *reply,
1388 void *userdata,
1389 sd_bus_error *error) {
1390
1391 static const char *const table[_CGROUP_IO_ACCOUNTING_METRIC_MAX] = {
1392 [CGROUP_IO_READ_BYTES] = "IOReadBytes",
1393 [CGROUP_IO_WRITE_BYTES] = "IOWriteBytes",
1394 [CGROUP_IO_READ_OPERATIONS] = "IOReadOperations",
1395 [CGROUP_IO_WRITE_OPERATIONS] = "IOWriteOperations",
1396 };
1397
1398 uint64_t value = UINT64_MAX;
1399 Unit *u = userdata;
1400 ssize_t metric;
1401
1402 assert(bus);
1403 assert(reply);
1404 assert(property);
1405 assert(u);
1406
1407 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
1408 (void) unit_get_io_accounting(u, metric, false, &value);
1409 return sd_bus_message_append(reply, "t", value);
1410}
1411
6592b975
LP		 1412int bus_unit_method_attach_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1413
1414 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
af4fa99d 1415 _cleanup_set_free_ Set *pids = NULL;
6592b975
LP		 1416 Unit *u = userdata;
1417 const char *path;
1418 int r;
1419
1420 assert(message);
1421
1422 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1423 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1424 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1425 * subcgroup path has no effect! */
1426
1427 r = mac_selinux_unit_access_check(u, message, "start", error);
1428 if (r < 0)
1429 return r;
1430
1431 r = sd_bus_message_read(message, "s", &path);
1432 if (r < 0)
1433 return r;
1434
1435 path = empty_to_null(path);
1436 if (path) {
1437 if (!path_is_absolute(path))
1438 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not absolute: %s", path);
1439
1440 if (!path_is_normalized(path))
1441 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not normalized: %s", path);
1442 }
1443
1444 if (!unit_cgroup_delegate(u))
1445 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Process migration not available on non-delegated units.");
1446
1447 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)))
1448 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit is not active, refusing.");
1449
1450 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
1451 if (r < 0)
1452 return r;
1453
1454 r = sd_bus_message_enter_container(message, 'a', "u");
1455 if (r < 0)
1456 return r;
1457 for (;;) {
1458 uid_t process_uid, sender_uid;
1459 uint32_t upid;
1460 pid_t pid;
1461
1462 r = sd_bus_message_read(message, "u", &upid);
1463 if (r < 0)
1464 return r;
1465 if (r == 0)
1466 break;
1467
1468 if (upid == 0) {
1469 r = sd_bus_creds_get_pid(creds, &pid);
1470 if (r < 0)
1471 return r;
1472 } else
1473 pid = (uid_t) upid;
1474
1475 /* Filter out duplicates */
1476 if (set_contains(pids, PID_TO_PTR(pid)))
1477 continue;
1478
1479 /* Check if this process is suitable for attaching to this unit */
1480 r = unit_pid_attachable(u, pid, error);
1481 if (r < 0)
1482 return r;
1483
1484 /* Let's query the sender's UID, so that we can make our security decisions */
1485 r = sd_bus_creds_get_euid(creds, &sender_uid);
1486 if (r < 0)
1487 return r;
1488
874b5ad2 1489 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
6592b975
LP		 1490 * then the process' UID and the target unit's UID have to match the sender's UID */
1491 if (sender_uid != 0 && sender_uid != getuid()) {
1492 r = get_process_uid(pid, &process_uid);
1493 if (r < 0)
1494 return sd_bus_error_set_errnof(error, r, "Failed to retrieve process UID: %m");
1495
1496 if (process_uid != sender_uid)
1497 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by client's UID. Refusing.", pid);
1498 if (process_uid != u->ref_uid)
1499 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by target unit's UID. Refusing.", pid);
1500 }
1501
1502 if (!pids) {
1503 pids = set_new(NULL);
1504 if (!pids)
1505 return -ENOMEM;
1506 }
1507
1508 r = set_put(pids, PID_TO_PTR(pid));
1509 if (r < 0)
1510 return r;
1511 }
1512
1513 r = sd_bus_message_exit_container(message);
1514 if (r < 0)
1515 return r;
1516
1517 r = unit_attach_pids_to_cgroup(u, pids, path);
1518 if (r < 0)
1519 return sd_bus_error_set_errnof(error, r, "Failed to attach processes to control group: %m");
1520
1521 return sd_bus_reply_method_return(message, NULL);
1522}
1523
718db961
LP		 1524const sd_bus_vtable bus_unit_cgroup_vtable[] = {
1525 SD_BUS_VTABLE_START(0),
1526 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
98bac605 1527 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0),
934277fe 1528 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
5ad096b3 1529 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0),
047f5d63
PH		 1530 SD_BUS_PROPERTY("EffectiveCPUs", "ay", property_get_cpuset_cpus, 0, 0),
1531 SD_BUS_PROPERTY("EffectiveMemoryNodes", "ay", property_get_cpuset_mems, 0, 0),
03a7b521 1532 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0),
906c06f6
DM		 1533 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter, 0, 0),
1534 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter, 0, 0),
1535 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter, 0, 0),
1536 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter, 0, 0),
fbe14fc9
LP		 1537 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter, 0, 0),
1538 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter, 0, 0),
1539 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter, 0, 0),
1540 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter, 0, 0),
dad97f04
ZJS		 1541
1542 SD_BUS_METHOD_WITH_NAMES("GetProcesses",
1543 NULL,,
1544 "a(sus)",
1545 SD_BUS_PARAM(processes),
1546 bus_unit_method_get_processes,
1547 SD_BUS_VTABLE_UNPRIVILEGED),
1548
1549 SD_BUS_METHOD_WITH_NAMES("AttachProcesses",
1550 "sau",
1551 SD_BUS_PARAM(subcgroup)
1552 SD_BUS_PARAM(pids),
1553 NULL,,
1554 bus_unit_method_attach_processes,
1555 SD_BUS_VTABLE_UNPRIVILEGED),
1556
718db961
LP		 1557 SD_BUS_VTABLE_END
1558};
2cccbca4 1559
8f8f05a9 1560static int send_new_signal(sd_bus *bus, void *userdata) {
4afd3348 1561 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1562 _cleanup_free_ char *p = NULL;
1563 Unit *u = userdata;
1564 int r;
2cccbca4 1565
718db961
LP		 1566 assert(bus);
1567 assert(u);
2cccbca4 1568
718db961 1569 p = unit_dbus_path(u);
e861098b 1570 if (!p)
718db961 1571 return -ENOMEM;
2cccbca4 1572
718db961
LP		 1573 r = sd_bus_message_new_signal(
1574 bus,
151b9b96 1575 &m,
718db961
LP		 1576 "/org/freedesktop/systemd1",
1577 "org.freedesktop.systemd1.Manager",
151b9b96 1578 "UnitNew");
718db961
LP		 1579 if (r < 0)
1580 return r;
2cccbca4 1581
718db961
LP		 1582 r = sd_bus_message_append(m, "so", u->id, p);
1583 if (r < 0)
1584 return r;
2cccbca4 1585
8f8f05a9 1586 return sd_bus_send(bus, m, NULL);
718db961 1587}
2cccbca4 1588
8f8f05a9 1589static int send_changed_signal(sd_bus *bus, void *userdata) {
718db961
LP		 1590 _cleanup_free_ char *p = NULL;
1591 Unit *u = userdata;
1592 int r;
2cccbca4 1593
718db961
LP		 1594 assert(bus);
1595 assert(u);
2cccbca4 1596
718db961 1597 p = unit_dbus_path(u);
9ceefc81 1598 if (!p)
718db961 1599 return -ENOMEM;
2cccbca4 1600
718db961
LP		 1601 /* Send a properties changed signal. First for the specific
1602 * type, then for the generic unit. The clients may rely on
1603 * this order to get atomic behavior if needed. */
ea430986 1604
aec8de63
LP		 1605 r = sd_bus_emit_properties_changed_strv(
1606 bus, p,
21b735e7 1607 unit_dbus_interface_from_type(u->type),
aec8de63 1608 NULL);
fe7f06f1 1609 if (r < 0)
aec8de63 1610 return r;
80fbf05e 1611
fe7f06f1 1612 return sd_bus_emit_properties_changed_strv(
718db961
LP		 1613 bus, p,
1614 "org.freedesktop.systemd1.Unit",
718db961 1615 NULL);
ea430986
LP		 1616}
1617
c1e1601e 1618void bus_unit_send_change_signal(Unit *u) {
b170dd80 1619 int r;
c1e1601e 1620 assert(u);
c1e1601e 1621
ac155bb8 1622 if (u->in_dbus_queue) {
71fda00f 1623 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
ac155bb8 1624 u->in_dbus_queue = false;
c0bd0cf7 1625 }
c1e1601e 1626
ac155bb8 1627 if (!u->id)
04ade7d2
LP		 1628 return;
1629
ae572acd 1630 r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
718db961 1631 if (r < 0)
f2341e0a 1632 log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
c1e1601e 1633
718db961
LP		 1634 u->sent_dbus_new_signal = true;
1635}
c4e2ceae 1636
6fcbec6f
LP		 1637void bus_unit_send_pending_change_signal(Unit *u, bool including_new) {
1638
1639 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1640 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1641 * so that clients can follow the full state transition */
1642
1643 if (!u->in_dbus_queue) /* If not enqueued, don't bother */
1644 return;
1645
1646 if (!u->sent_dbus_new_signal && !including_new) /* If the unit was never announced, don't bother, it's fine if
1647 * the unit appears in the new state right-away (except if the
1648 * caller explicitly asked us to send it anyway) */
1649 return;
1650
1651 if (MANAGER_IS_RELOADING(u->manager)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1652 * when we are reloading. */
1653 return;
1654
1655 bus_unit_send_change_signal(u);
1656}
1657
d9e45bc3
MS		 1658int bus_unit_send_pending_freezer_message(Unit *u) {
1659 int r;
1660
1661 assert(u);
1662
1663 if (!u->pending_freezer_message)
1664 return 0;
1665
1666 r = sd_bus_send(NULL, u->pending_freezer_message, NULL);
1667 if (r < 0)
1668 log_warning_errno(r, "Failed to send queued message, ignoring: %m");
1669
1670 u->pending_freezer_message = sd_bus_message_unref(u->pending_freezer_message);
1671
1672 return 0;
1673}
1674
8f8f05a9 1675static int send_removed_signal(sd_bus *bus, void *userdata) {
4afd3348 1676 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1677 _cleanup_free_ char *p = NULL;
1678 Unit *u = userdata;
1679 int r;
c4e2ceae 1680
718db961
LP		 1681 assert(bus);
1682 assert(u);
c1e1601e 1683
718db961 1684 p = unit_dbus_path(u);
e861098b 1685 if (!p)
718db961 1686 return -ENOMEM;
c1e1601e 1687
718db961
LP		 1688 r = sd_bus_message_new_signal(
1689 bus,
151b9b96 1690 &m,
718db961
LP		 1691 "/org/freedesktop/systemd1",
1692 "org.freedesktop.systemd1.Manager",
151b9b96 1693 "UnitRemoved");
718db961
LP		 1694 if (r < 0)
1695 return r;
c1e1601e 1696
718db961
LP		 1697 r = sd_bus_message_append(m, "so", u->id, p);
1698 if (r < 0)
1699 return r;
c1e1601e 1700
8f8f05a9 1701 return sd_bus_send(bus, m, NULL);
c1e1601e
LP		 1702}
1703
1704void bus_unit_send_removed_signal(Unit *u) {
718db961 1705 int r;
c1e1601e
LP		 1706 assert(u);
1707
0dd99f86 1708 if (!u->sent_dbus_new_signal || u->in_dbus_queue)
7535cc78
LP		 1709 bus_unit_send_change_signal(u);
1710
ac155bb8 1711 if (!u->id)
04ade7d2
LP		 1712 return;
1713
ae572acd 1714 r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u);
718db961 1715 if (r < 0)
f2341e0a 1716 log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
c1e1601e 1717}
e2110e5d 1718
70666e28 1719int bus_unit_queue_job_one(
718db961 1720 sd_bus_message *message,
cad45ba1
LP		 1721 Unit *u,
1722 JobType type,
1723 JobMode mode,
50cbaba4 1724 BusUnitQueueFlags flags,
70666e28 1725 sd_bus_message *reply,
ebcf1f97 1726 sd_bus_error *error) {
cad45ba1 1727
e57ac1b0 1728 _cleanup_set_free_ Set *affected = NULL;
70666e28 1729 _cleanup_free_ char *job_path = NULL, *unit_path = NULL;
50cbaba4 1730 Job *j, *a;
cad45ba1
LP		 1731 int r;
1732
50cbaba4
LP		 1733 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY)) {
1734 affected = set_new(NULL);
1735 if (!affected)
1736 return -ENOMEM;
1737 }
1738
1739 r = manager_add_job(u->manager, type, u, mode, affected, error, &j);
cad45ba1 1740 if (r < 0)
ebcf1f97 1741 return r;
cad45ba1 1742
c5a97ed1
LP		 1743 r = bus_job_track_sender(j, message);
1744 if (r < 0)
1745 return r;
cad45ba1 1746
13142276
LP		 1747 /* Before we send the method reply, force out the announcement JobNew for this job */
1748 bus_job_send_pending_change_signal(j, true);
1749
50cbaba4
LP		 1750 job_path = job_dbus_path(j);
1751 if (!job_path)
1752 return -ENOMEM;
1753
1754 /* The classic response is just a job object path */
1755 if (!FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY))
70666e28 1756 return sd_bus_message_append(reply, "o", job_path);
50cbaba4
LP		 1757
1758 /* In verbose mode respond with the anchor job plus everything that has been affected */
50cbaba4
LP		 1759
1760 unit_path = unit_dbus_path(j->unit);
1761 if (!unit_path)
1762 return -ENOMEM;
1763
1764 r = sd_bus_message_append(reply, "uosos",
1765 j->id, job_path,
1766 j->unit->id, unit_path,
1767 job_type_to_string(j->type));
1768 if (r < 0)
1769 return r;
1770
1771 r = sd_bus_message_open_container(reply, 'a', "(uosos)");
1772 if (r < 0)
1773 return r;
1774
90e74a66 1775 SET_FOREACH(a, affected) {
50cbaba4
LP		 1776 if (a->id == j->id)
1777 continue;
1778
1779 /* Free paths from previous iteration */
1780 job_path = mfree(job_path);
1781 unit_path = mfree(unit_path);
1782
1783 job_path = job_dbus_path(a);
1784 if (!job_path)
1785 return -ENOMEM;
1786
1787 unit_path = unit_dbus_path(a->unit);
1788 if (!unit_path)
1789 return -ENOMEM;
1790
1791 r = sd_bus_message_append(reply, "(uosos)",
1792 a->id, job_path,
1793 a->unit->id, unit_path,
1794 job_type_to_string(a->type));
1795 if (r < 0)
1796 return r;
1797 }
1798
70666e28
ZJS		 1799 return sd_bus_message_close_container(reply);
1800}
1801
1802int bus_unit_queue_job(
1803 sd_bus_message *message,
1804 Unit *u,
1805 JobType type,
1806 JobMode mode,
1807 BusUnitQueueFlags flags,
1808 sd_bus_error *error) {
1809
1810 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1811 int r;
1812
1813 assert(message);
1814 assert(u);
1815 assert(type >= 0 && type < _JOB_TYPE_MAX);
1816 assert(mode >= 0 && mode < _JOB_MODE_MAX);
1817
1818 r = mac_selinux_unit_access_check(
1819 u, message,
1820 job_type_to_access_method(type),
1821 error);
1822 if (r < 0)
1823 return r;
1824
1825 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE) && unit_can_reload(u)) {
1826 if (type == JOB_RESTART)
1827 type = JOB_RELOAD_OR_START;
1828 else if (type == JOB_TRY_RESTART)
1829 type = JOB_TRY_RELOAD;
1830 }
1831
1832 if (type == JOB_STOP &&
1833 IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_ERROR, UNIT_BAD_SETTING) &&
1834 unit_active_state(u) == UNIT_INACTIVE)
1835 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
1836
1837 if ((type == JOB_START && u->refuse_manual_start) ||
1838 (type == JOB_STOP && u->refuse_manual_stop) ||
1839 (IN_SET(type, JOB_RESTART, JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)) ||
1840 (type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start))
1841 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);
1842
1843 r = sd_bus_message_new_method_return(message, &reply);
1844 if (r < 0)
1845 return r;
1846
1847 r = bus_unit_queue_job_one(message, u, type, mode, flags, reply, error);
50cbaba4
LP		 1848 if (r < 0)
1849 return r;
1850
1851 return sd_bus_send(NULL, reply, NULL);
cad45ba1
LP		 1852}
1853
721060d4 1854static int bus_unit_set_live_property(
9f2e86af
LP		 1855 Unit *u,
1856 const char *name,
718db961 1857 sd_bus_message *message,
2e59b241 1858 UnitWriteFlags flags,
718db961 1859 sd_bus_error *error) {
9f2e86af
LP		 1860
1861 int r;
1862
1863 assert(u);
1864 assert(name);
718db961 1865 assert(message);
9f2e86af 1866
cb31470f
ZJS		 1867 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for
1868 * transient units that are being created). */
721060d4 1869
9f2e86af 1870 if (streq(name, "Description")) {
718db961 1871 const char *d;
9f2e86af 1872
718db961
LP		 1873 r = sd_bus_message_read(message, "s", &d);
1874 if (r < 0)
1875 return r;
8aec412f 1876
2e59b241 1877 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
718db961 1878 r = unit_set_description(u, d);
8aec412f
LP		 1879 if (r < 0)
1880 return r;
b9316fb0 1881
2e59b241 1882 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Description=%s", d);
8aec412f 1883 }
9f2e86af
LP		 1884
1885 return 1;
721060d4
LP		 1886 }
1887
0dd3c090
ZJS		 1888 /* A setting that only applies to active units. We don't actually write this to /run, this state is
1889 * managed internally. "+foo" sets flag foo, "-foo" unsets flag foo, just "foo" resets flags to
1890 * foo. The last type cannot be mixed with "+" or "-". */
1891
1892 if (streq(name, "Markers")) {
1893 unsigned settings = 0, mask = 0;
1894 bool some_plus_minus = false, some_absolute = false;
1895
1896 r = sd_bus_message_enter_container(message, 'a', "s");
1897 if (r < 0)
1898 return r;
1899
1900 for (;;) {
1901 const char *word;
1902 bool b;
1903
1904 r = sd_bus_message_read(message, "s", &word);
1905 if (r < 0)
1906 return r;
1907 if (r == 0)
1908 break;
1909
1910 if (IN_SET(word[0], '+', '-')) {
1911 b = word[0] == '+';
1912 word++;
1913 some_plus_minus = true;
1914 } else {
1915 b = true;
1916 some_absolute = true;
1917 }
1918
1919 UnitMarker m = unit_marker_from_string(word);
1920 if (m < 0)
1921 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING,
1922 "Unknown marker \"%s\".", word);
1923
1924 SET_FLAG(settings, 1u << m, b);
1925 SET_FLAG(mask, 1u << m, true);
1926 }
1927
1928 r = sd_bus_message_exit_container(message);
1929 if (r < 0)
1930 return r;
1931
1932 if (some_plus_minus && some_absolute)
1933 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING, "Bad marker syntax.");
1934
1935 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1936 if (some_absolute)
1937 u->markers = settings;
1938 else
1939 u->markers = settings | (u->markers & ~mask);
1940 }
1941
1942 return 1;
1943 }
1944
721060d4
LP		 1945 return 0;
1946}
1947
54fcb619
ZJS		 1948static int bus_set_transient_emergency_action(
1949 Unit *u,
1950 const char *name,
1951 EmergencyAction *p,
1952 sd_bus_message *message,
1953 UnitWriteFlags flags,
1954 sd_bus_error *error) {
1955
1956 const char *s;
1957 EmergencyAction v;
1958 int r;
1959 bool system;
1960
1961 assert(p);
1962
1963 r = sd_bus_message_read(message, "s", &s);
1964 if (r < 0)
1965 return r;
1966
1967 system = MANAGER_IS_SYSTEM(u->manager);
1968 r = parse_emergency_action(s, system, &v);
db2df550 1969 if (r < 0)
54fcb619 1970 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
119f0f28 1971 r == -EOPNOTSUPP ? "%s setting invalid for manager type: %s"
54fcb619
ZJS		 1972 : "Invalid %s setting: %s",
1973 name, s);
1974
1975 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1976 *p = v;
1977 unit_write_settingf(u, flags, name,
1978 "%s=%s", name, s);
1979 }
1980
1981 return 1;
1982}
1983
7af67e9a
LP		 1984static int bus_set_transient_exit_status(
1985 Unit *u,
1986 const char *name,
1987 int *p,
1988 sd_bus_message *message,
1989 UnitWriteFlags flags,
1990 sd_bus_error *error) {
1991
1992 int32_t k;
1993 int r;
1994
1995 assert(p);
1996
1997 r = sd_bus_message_read(message, "i", &k);
1998 if (r < 0)
1999 return r;
2000
2001 if (k > 255)
2002 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Exit status must be in range 0…255 or negative.");
2003
2004 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
2005 *p = k < 0 ? -1 : k;
2006
2007 if (k < 0)
2008 unit_write_settingf(u, flags, name, "%s=", name);
2009 else
2010 unit_write_settingf(u, flags, name, "%s=%i", name, k);
2011 }
2012
2013 return 1;
2014}
2015
faa781cf 2016static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode, CollectMode, collect_mode_from_string);
faa781cf
YW		 2017static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode, JobMode, job_mode_from_string);
2018
2019static int bus_set_transient_conditions(
2020 Unit *u,
2021 const char *name,
2022 Condition **list,
2023 bool is_condition,
2024 sd_bus_message *message,
2025 UnitWriteFlags flags,
2026 sd_bus_error *error) {
2027
2028 const char *type_name, *param;
2029 int trigger, negate, r;
2030 bool empty = true;
2031
2032 assert(list);
2033
2034 r = sd_bus_message_enter_container(message, 'a', "(sbbs)");
2035 if (r < 0)
2036 return r;
2037
2038 while ((r = sd_bus_message_read(message, "(sbbs)", &type_name, &trigger, &negate, &param)) > 0) {
2039 ConditionType t;
2040
2041 t = is_condition ? condition_type_from_string(type_name) : assert_type_from_string(type_name);
2042 if (t < 0)
2043 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid condition type: %s", type_name);
2044
476cfe62
LP		 2045 if (isempty(param))
2046 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Condition parameter in %s is empty", type_name);
faa781cf 2047
476cfe62
LP		 2048 if (condition_takes_path(t) && !path_is_absolute(param))
2049 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in condition %s is not absolute: %s", type_name, param);
faa781cf
YW		 2050
2051 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
2052 Condition *c;
2053
2054 c = condition_new(t, param, trigger, negate);
2055 if (!c)
2056 return -ENOMEM;
2057
2058 LIST_PREPEND(conditions, *list, c);
2059
476cfe62
LP		 2060 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name,
2061 "%s=%s%s%s", type_name,
2062 trigger ? "|" : "", negate ? "!" : "", param);
faa781cf
YW		 2063 }
2064
2065 empty = false;
2066 }
2067 if (r < 0)
2068 return r;
2069
2070 r = sd_bus_message_exit_container(message);
2071 if (r < 0)
2072 return r;
2073
2074 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
2075 *list = condition_free_list(*list);
2076 unit_write_settingf(u, flags, name, "%sNull=", is_condition ? "Condition" : "Assert");
2077 }
2078
2079 return 1;
2080}
2081
721060d4
LP		 2082static int bus_unit_set_transient_property(
2083 Unit *u,
2084 const char *name,
2085 sd_bus_message *message,
2086 UnitWriteFlags flags,
2087 sd_bus_error *error) {
2088
170d4026 2089 UnitDependency d;
721060d4 2090 int r;
261420ba 2091
721060d4
LP		 2092 assert(u);
2093 assert(name);
2094 assert(message);
2095
cb31470f
ZJS		 2096 /* Handles settings when transient units are created. This settings cannot be altered anymore after
2097 * the unit has been created. */
721060d4 2098
faa781cf
YW		 2099 if (streq(name, "SourcePath"))
2100 return bus_set_transient_path(u, name, &u->source_path, message, flags, error);
261420ba 2101
faa781cf
YW		 2102 if (streq(name, "StopWhenUnneeded"))
2103 return bus_set_transient_bool(u, name, &u->stop_when_unneeded, message, flags, error);
261420ba 2104
faa781cf
YW		 2105 if (streq(name, "RefuseManualStart"))
2106 return bus_set_transient_bool(u, name, &u->refuse_manual_start, message, flags, error);
261420ba 2107
faa781cf
YW		 2108 if (streq(name, "RefuseManualStop"))
2109 return bus_set_transient_bool(u, name, &u->refuse_manual_stop, message, flags, error);
c221420b 2110
faa781cf
YW		 2111 if (streq(name, "AllowIsolate"))
2112 return bus_set_transient_bool(u, name, &u->allow_isolate, message, flags, error);
5afe510c 2113
faa781cf
YW		 2114 if (streq(name, "DefaultDependencies"))
2115 return bus_set_transient_bool(u, name, &u->default_dependencies, message, flags, error);
2116
2117 if (streq(name, "OnFailureJobMode"))
2118 return bus_set_transient_job_mode(u, name, &u->on_failure_job_mode, message, flags, error);
2119
2120 if (streq(name, "IgnoreOnIsolate"))
2121 return bus_set_transient_bool(u, name, &u->ignore_on_isolate, message, flags, error);
2122
2123 if (streq(name, "JobTimeoutUSec")) {
2124 r = bus_set_transient_usec_fix_0(u, name, &u->job_timeout, message, flags, error);
2125 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags) && !u->job_running_timeout_set)
2126 u->job_running_timeout = u->job_timeout;
2127 }
2128
2129 if (streq(name, "JobRunningTimeoutUSec")) {
2130 r = bus_set_transient_usec_fix_0(u, name, &u->job_running_timeout, message, flags, error);
2131 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
2132 u->job_running_timeout_set = true;
2133
2134 return r;
2135 }
2136
2137 if (streq(name, "JobTimeoutAction"))
2138 return bus_set_transient_emergency_action(u, name, &u->job_timeout_action, message, flags, error);
2139
2140 if (streq(name, "JobTimeoutRebootArgument"))
2141 return bus_set_transient_string(u, name, &u->job_timeout_reboot_arg, message, flags, error);
2142
2143 if (streq(name, "StartLimitIntervalUSec"))
7bf081a1 2144 return bus_set_transient_usec(u, name, &u->start_ratelimit.interval, message, flags, error);
faa781cf
YW		 2145
2146 if (streq(name, "StartLimitBurst"))
7bf081a1 2147 return bus_set_transient_unsigned(u, name, &u->start_ratelimit.burst, message, flags, error);
faa781cf
YW		 2148
2149 if (streq(name, "StartLimitAction"))
2150 return bus_set_transient_emergency_action(u, name, &u->start_limit_action, message, flags, error);
2151
2152 if (streq(name, "FailureAction"))
2153 return bus_set_transient_emergency_action(u, name, &u->failure_action, message, flags, error);
2154
2155 if (streq(name, "SuccessAction"))
2156 return bus_set_transient_emergency_action(u, name, &u->success_action, message, flags, error);
2157
7af67e9a
LP		 2158 if (streq(name, "FailureActionExitStatus"))
2159 return bus_set_transient_exit_status(u, name, &u->failure_action_exit_status, message, flags, error);
2160
2161 if (streq(name, "SuccessActionExitStatus"))
2162 return bus_set_transient_exit_status(u, name, &u->success_action_exit_status, message, flags, error);
2163
faa781cf
YW		 2164 if (streq(name, "RebootArgument"))
2165 return bus_set_transient_string(u, name, &u->reboot_arg, message, flags, error);
2166
2167 if (streq(name, "CollectMode"))
2168 return bus_set_transient_collect_mode(u, name, &u->collect_mode, message, flags, error);
2169
2170 if (streq(name, "Conditions"))
2171 return bus_set_transient_conditions(u, name, &u->conditions, true, message, flags, error);
2172
2173 if (streq(name, "Asserts"))
2174 return bus_set_transient_conditions(u, name, &u->asserts, false, message, flags, error);
2175
2176 if (streq(name, "Documentation")) {
2177 _cleanup_strv_free_ char **l = NULL;
2178 char **p;
2179
2180 r = sd_bus_message_read_strv(message, &l);
5afe510c
LP		 2181 if (r < 0)
2182 return r;
2183
faa781cf
YW		 2184 STRV_FOREACH(p, l) {
2185 if (!documentation_url_is_valid(*p))
2186 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid URL in %s: %s", name, *p);
2187 }
5afe510c 2188
2e59b241 2189 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
faa781cf
YW		 2190 if (strv_isempty(l)) {
2191 u->documentation = strv_free(u->documentation);
2192 unit_write_settingf(u, flags, name, "%s=", name);
2193 } else {
2194 strv_extend_strv(&u->documentation, l, false);
2195
2196 STRV_FOREACH(p, l)
2197 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2198 }
5afe510c
LP		 2199 }
2200
2201 return 1;
2202
d79200e2
LP		 2203 } else if (streq(name, "Slice")) {
2204 Unit *slice;
c221420b 2205 const char *s;
c221420b 2206
d79200e2
LP		 2207 if (!UNIT_HAS_CGROUP_CONTEXT(u))
2208 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
2209 if (u->type == UNIT_SLICE)
2210 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
efdb0237
LP		 2211 if (unit_has_name(u, SPECIAL_INIT_SCOPE))
2212 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope");
d79200e2 2213
718db961
LP		 2214 r = sd_bus_message_read(message, "s", &s);
2215 if (r < 0)
2216 return r;
c221420b 2217
d79200e2
LP		 2218 if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
2219 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
2220
aea529e5
LP		 2221 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
2222 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
2223 * instead of manager_load_unit() on purpose, here. */
2224 r = manager_load_unit_prepare(u->manager, s, NULL, error, &slice);
d79200e2
LP		 2225 if (r < 0)
2226 return r;
c221420b 2227
d79200e2
LP		 2228 if (slice->type != UNIT_SLICE)
2229 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
b9316fb0 2230
2e59b241 2231 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
d79200e2 2232 r = unit_set_slice(u, slice);
8aec412f
LP		 2233 if (r < 0)
2234 return r;
c221420b 2235
2e59b241 2236 unit_write_settingf(u, flags|UNIT_PRIVATE, name, "Slice=%s", s);
8aec412f 2237 }
b9ec9359 2238
c221420b 2239 return 1;
d79200e2 2240
faa781cf
YW		 2241 } else if (streq(name, "RequiresMountsFor")) {
2242 _cleanup_strv_free_ char **l = NULL;
2243 char **p;
2244
2245 r = sd_bus_message_read_strv(message, &l);
2246 if (r < 0)
2247 return r;
2248
2249 STRV_FOREACH(p, l) {
b459700b
YW		 2250 path_simplify(*p, true);
2251
faa781cf
YW		 2252 if (!path_is_absolute(*p))
2253 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not absolute: %s", name, *p);
2254
b459700b
YW		 2255 if (!path_is_valid(*p))
2256 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s has invalid length: %s", name, *p);
2257
2258 if (!path_is_normalized(*p))
2259 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not normalized: %s", name, *p);
2260
faa781cf
YW		 2261 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
2262 r = unit_require_mounts_for(u, *p, UNIT_DEPENDENCY_FILE);
2263 if (r < 0)
2264 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to add required mount \"%s\": %m", *p);
7fb3ee51 2265
faa781cf
YW		 2266 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2267 }
f32b43bd 2268 }
7fb3ee51 2269
faa781cf
YW		 2270 return 1;
2271 }
2272
2273 if (streq(name, "RequiresOverridable"))
2274 d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */
2275 else if (streq(name, "RequisiteOverridable"))
2276 d = UNIT_REQUISITE; /* same here */
2277 else
2278 d = unit_dependency_from_string(name);
2279
2280 if (d >= 0) {
2281 const char *other;
2282
40430848
LP		 2283 if (!IN_SET(d,
2284 UNIT_REQUIRES,
2285 UNIT_REQUISITE,
2286 UNIT_WANTS,
2287 UNIT_BINDS_TO,
2288 UNIT_PART_OF,
2289 UNIT_CONFLICTS,
2290 UNIT_BEFORE,
2291 UNIT_AFTER,
2292 UNIT_ON_FAILURE,
2293 UNIT_PROPAGATES_RELOAD_TO,
2294 UNIT_RELOAD_PROPAGATED_FROM,
2295 UNIT_JOINS_NAMESPACE_OF))
2296 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Dependency type %s may not be created transiently.", unit_dependency_to_string(d));
2297
718db961
LP		 2298 r = sd_bus_message_enter_container(message, 'a', "s");
2299 if (r < 0)
2300 return r;
7fb3ee51 2301
718db961 2302 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
7410616c 2303 if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
718db961 2304 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
7fb3ee51 2305
2e59b241 2306 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
b9ec9359 2307 _cleanup_free_ char *label = NULL;
7fb3ee51 2308
35d8c19a 2309 r = unit_add_dependency_by_name(u, d, other, true, UNIT_DEPENDENCY_FILE);
7fb3ee51
LP		 2310 if (r < 0)
2311 return r;
2312
605405c6 2313 label = strjoin(name, "-", other);
7fb3ee51
LP		 2314 if (!label)
2315 return -ENOMEM;
2316
faa781cf 2317 unit_write_settingf(u, flags, label, "%s=%s", unit_dependency_to_string(d), other);
7fb3ee51
LP		 2318 }
2319
7fb3ee51 2320 }
718db961
LP		 2321 if (r < 0)
2322 return r;
7fb3ee51 2323
6ce270b1
LP		 2324 r = sd_bus_message_exit_container(message);
2325 if (r < 0)
2326 return r;
2327
7fb3ee51 2328 return 1;
05a98afd
LP		 2329
2330 } else if (streq(name, "AddRef")) {
2331
2332 int b;
2333
2334 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
2335 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
2336 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
2337 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
2338 * dependency type, hence let's not confuse things with that.
2339 *
5238e957 2340 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
05a98afd
LP		 2341 * the transient unit is complete, so that setting this property multiple times in the same transient
2342 * unit creation call doesn't count as individual references. */
2343
2344 r = sd_bus_message_read(message, "b", &b);
2345 if (r < 0)
2346 return r;
2347
2e59b241 2348 if (!UNIT_WRITE_FLAGS_NOOP(flags))
05a98afd
LP		 2349 u->bus_track_add = b;
2350
2351 return 1;
9f2e86af
LP		 2352 }
2353
2354 return 0;
2355}
2356
c2756a68
LP		 2357int bus_unit_set_properties(
2358 Unit *u,
718db961 2359 sd_bus_message *message,
2e59b241 2360 UnitWriteFlags flags,
c2756a68 2361 bool commit,
718db961 2362 sd_bus_error *error) {
c2756a68 2363
8e2af478 2364 bool for_real = false;
8e2af478
LP		 2365 unsigned n = 0;
2366 int r;
2367
2368 assert(u);
718db961 2369 assert(message);
8e2af478
LP		 2370
2371 /* We iterate through the array twice. First run we just check
2372 * if all passed data is valid, second run actually applies
2373 * it. This is to implement transaction-like behaviour without
2374 * actually providing full transactions. */
2375
718db961
LP		 2376 r = sd_bus_message_enter_container(message, 'a', "(sv)");
2377 if (r < 0)
2378 return r;
8e2af478 2379
8e2af478 2380 for (;;) {
8e2af478 2381 const char *name;
2e59b241 2382 UnitWriteFlags f;
8e2af478 2383
718db961
LP		 2384 r = sd_bus_message_enter_container(message, 'r', "sv");
2385 if (r < 0)
2386 return r;
2387 if (r == 0) {
2e59b241 2388 if (for_real || UNIT_WRITE_FLAGS_NOOP(flags))
8e2af478
LP		 2389 break;
2390
2391 /* Reached EOF. Let's try again, and this time for realz... */
718db961
LP		 2392 r = sd_bus_message_rewind(message, false);
2393 if (r < 0)
2394 return r;
6ce270b1 2395
8e2af478
LP		 2396 for_real = true;
2397 continue;
2398 }
2399
718db961
LP		 2400 r = sd_bus_message_read(message, "s", &name);
2401 if (r < 0)
2402 return r;
8e2af478 2403
718db961 2404 if (!UNIT_VTABLE(u)->bus_set_property)
cb31470f
ZJS		 2405 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY,
2406 "Objects of this type do not support setting properties.");
8e2af478 2407
718db961
LP		 2408 r = sd_bus_message_enter_container(message, 'v', NULL);
2409 if (r < 0)
2410 return r;
8e2af478 2411
2e59b241
LP		 2412 /* If not for real, then mask out the two target flags */
2413 f = for_real ? flags : (flags & ~(UNIT_RUNTIME|UNIT_PERSISTENT));
2414
2415 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, f, error);
9f2e86af 2416 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
2e59b241 2417 r = bus_unit_set_transient_property(u, name, message, f, error);
721060d4
LP		 2418 if (r == 0)
2419 r = bus_unit_set_live_property(u, name, message, f, error);
718db961
LP		 2420 if (r < 0)
2421 return r;
721060d4 2422
718db961 2423 if (r == 0)
cb31470f
ZJS		 2424 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY,
2425 "Cannot set property %s, or unknown property.", name);
718db961
LP		 2426
2427 r = sd_bus_message_exit_container(message);
8e2af478
LP		 2428 if (r < 0)
2429 return r;
8e2af478 2430
718db961
LP		 2431 r = sd_bus_message_exit_container(message);
2432 if (r < 0)
2433 return r;
8e2af478
LP		 2434
2435 n += for_real;
2436 }
2437
6ce270b1
LP		 2438 r = sd_bus_message_exit_container(message);
2439 if (r < 0)
2440 return r;
2441
c2756a68 2442 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
8e2af478
LP		 2443 UNIT_VTABLE(u)->bus_commit_properties(u);
2444
241da328 2445 return n;
8e2af478 2446}
000a996d 2447
e49da001 2448int bus_unit_validate_load_state(Unit *u, sd_bus_error *error) {
6eb7c172 2449 assert(u);
000a996d 2450
e49da001 2451 /* Generates a pretty error if a unit isn't properly loaded. */
000a996d 2452
e49da001
LP		 2453 switch (u->load_state) {
2454
2455 case UNIT_LOADED:
2456 return 0;
000a996d 2457
e49da001 2458 case UNIT_NOT_FOUND:
b21d2f81 2459 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id);
000a996d 2460
c4555ad8
LP		 2461 case UNIT_BAD_SETTING:
2462 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING, "Unit %s has a bad unit file setting.", u->id);
2463
e49da001 2464 case UNIT_ERROR: /* Only show .load_error in UNIT_ERROR state */
6b10a2e0
LP		 2465 return sd_bus_error_set_errnof(error, u->load_error,
2466 "Unit %s failed to load properly, please adjust/correct and reload service manager: %m", u->id);
e49da001
LP		 2467
2468 case UNIT_MASKED:
2469 return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id);
2470
2471 case UNIT_STUB:
2472 case UNIT_MERGED:
2473 default:
2474 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unexpected load state of unit %s", u->id);
2475 }
000a996d 2476}
05a98afd 2477
c5a97ed1 2478static int bus_unit_track_handler(sd_bus_track *t, void *userdata) {
05a98afd
LP		 2479 Unit *u = userdata;
2480
2481 assert(t);
2482 assert(u);
2483
2484 u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */
2485
e5c36295
LP		 2486 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2487 * let's see */
2488 unit_add_to_cgroup_empty_queue(u);
2489
2490 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
05a98afd 2491 unit_add_to_gc_queue(u);
e5c36295 2492
05a98afd
LP		 2493 return 0;
2494}
2495
c5a97ed1 2496static int bus_unit_allocate_bus_track(Unit *u) {
05a98afd
LP		 2497 int r;
2498
2499 assert(u);
2500
2501 if (u->bus_track)
2502 return 0;
2503
c5a97ed1 2504 r = sd_bus_track_new(u->manager->api_bus, &u->bus_track, bus_unit_track_handler, u);
05a98afd
LP		 2505 if (r < 0)
2506 return r;
2507
2508 r = sd_bus_track_set_recursive(u->bus_track, true);
2509 if (r < 0) {
2510 u->bus_track = sd_bus_track_unref(u->bus_track);
2511 return r;
2512 }
2513
2514 return 0;
2515}
2516
2517int bus_unit_track_add_name(Unit *u, const char *name) {
2518 int r;
2519
2520 assert(u);
2521
c5a97ed1 2522 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2523 if (r < 0)
2524 return r;
2525
2526 return sd_bus_track_add_name(u->bus_track, name);
2527}
2528
2529int bus_unit_track_add_sender(Unit *u, sd_bus_message *m) {
2530 int r;
2531
2532 assert(u);
2533
c5a97ed1 2534 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2535 if (r < 0)
2536 return r;
2537
2538 return sd_bus_track_add_sender(u->bus_track, m);
2539}
2540
2541int bus_unit_track_remove_sender(Unit *u, sd_bus_message *m) {
2542 assert(u);
2543
cb31470f
ZJS		 2544 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet,
2545 * return an error */
05a98afd
LP		 2546 if (!u->bus_track)
2547 return -EUNATCH;
2548
2549 return sd_bus_track_remove_sender(u->bus_track, m);
2550}
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