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Merge pull request #17732 from yuwata/core-use-synthetic_errno
[thirdparty/systemd.git] / src / core / dbus-unit.c
CommitLineData
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
88ced61b
MC		 326static int bus_verify_manage_units_async_full(
327 Unit *u,
328 const char *verb,
329 int capability,
330 const char *polkit_message,
05a98afd 331 bool interactive,
88ced61b
MC		 332 sd_bus_message *call,
333 sd_bus_error *error) {
334
335 const char *details[9] = {
336 "unit", u->id,
337 "verb", verb,
338 };
339
340 if (polkit_message) {
341 details[4] = "polkit.message";
342 details[5] = polkit_message;
343 details[6] = "polkit.gettext_domain";
344 details[7] = GETTEXT_PACKAGE;
345 }
346
05a98afd
LP		 347 return bus_verify_polkit_async(
348 call,
349 capability,
350 "org.freedesktop.systemd1.manage-units",
351 details,
352 interactive,
353 UID_INVALID,
354 &u->manager->polkit_registry,
355 error);
88ced61b
MC		 356}
357
50cbaba4
LP		 358static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
359 [JOB_START] = N_("Authentication is required to start '$(unit)'."),
360 [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
361 [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
362 [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
363 [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
364};
365
1d22e906 366int bus_unit_method_start_generic(
1d22e906
LP		 367 sd_bus_message *message,
368 Unit *u,
369 JobType job_type,
370 bool reload_if_possible,
371 sd_bus_error *error) {
372
e59ba56d 373 const char *smode, *verb;
718db961
LP		 374 JobMode mode;
375 int r;
9f39404c 376
718db961 377 assert(message);
9f39404c 378 assert(u);
718db961 379 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
9f39404c 380
61ea63f1
EV		 381 r = mac_selinux_unit_access_check(
382 u, message,
94bd7323
EV		 383 job_type_to_access_method(job_type),
384 error);
1d22e906
LP		 385 if (r < 0)
386 return r;
387
718db961
LP		 388 r = sd_bus_message_read(message, "s", &smode);
389 if (r < 0)
ebcf1f97 390 return r;
9f39404c 391
718db961
LP		 392 mode = job_mode_from_string(smode);
393 if (mode < 0)
ebcf1f97 394 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
9f39404c 395
88ced61b 396 if (reload_if_possible)
e59ba56d 397 verb = strjoina("reload-or-", job_type_to_string(job_type));
88ced61b 398 else
e59ba56d 399 verb = job_type_to_string(job_type);
88ced61b
MC		 400
401 r = bus_verify_manage_units_async_full(
402 u,
403 verb,
404 CAP_SYS_ADMIN,
ebfb1b57 405 polkit_message_for_job[job_type],
05a98afd 406 true,
88ced61b
MC		 407 message,
408 error);
1d22e906
LP		 409 if (r < 0)
410 return r;
411 if (r == 0)
412 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
413
50cbaba4
LP		 414 return bus_unit_queue_job(message, u, job_type, mode,
415 reload_if_possible ? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE : 0, error);
9f39404c
LP		 416}
417
19070062
LP		 418static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
419 return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
718db961 420}
b548631a 421
19070062
LP		 422static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
423 return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
718db961
LP		 424}
425
19070062
LP		 426static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
427 return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
718db961 428}
0a524ba7 429
19070062
LP		 430static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
431 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
718db961 432}
8a0867d6 433
19070062
LP		 434static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
435 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
718db961 436}
cad45ba1 437
19070062
LP		 438static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
439 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
718db961 440}
8a0867d6 441
19070062
LP		 442static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
443 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
718db961 444}
8a0867d6 445
50cbaba4
LP		 446int bus_unit_method_enqueue_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
447 BusUnitQueueFlags flags = BUS_UNIT_QUEUE_VERBOSE_REPLY;
448 const char *jtype, *smode;
449 Unit *u = userdata;
450 JobType type;
451 JobMode mode;
452 int r;
453
454 assert(message);
455 assert(u);
456
457 r = sd_bus_message_read(message, "ss", &jtype, &smode);
458 if (r < 0)
459 return r;
460
461 /* Parse the two magic reload types "reload-or-…" manually */
462 if (streq(jtype, "reload-or-restart")) {
463 type = JOB_RESTART;
464 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
465 } else if (streq(jtype, "reload-or-try-restart")) {
466 type = JOB_TRY_RESTART;
467 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
468 } else {
469 /* And the rest generically */
470 type = job_type_from_string(jtype);
471 if (type < 0)
472 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job type %s invalid", jtype);
473 }
474
475 mode = job_mode_from_string(smode);
476 if (mode < 0)
477 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
478
479 r = mac_selinux_unit_access_check(
480 u, message,
481 job_type_to_access_method(type),
482 error);
483 if (r < 0)
484 return r;
485
486 r = bus_verify_manage_units_async_full(
487 u,
488 jtype,
489 CAP_SYS_ADMIN,
490 polkit_message_for_job[type],
491 true,
492 message,
493 error);
494 if (r < 0)
495 return r;
496 if (r == 0)
497 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
498
499 return bus_unit_queue_job(message, u, type, mode, flags, error);
500}
501
19070062 502int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 503 Unit *u = userdata;
504 const char *swho;
505 int32_t signo;
506 KillWho who;
507 int r;
5632e374 508
718db961
LP		 509 assert(message);
510 assert(u);
cad45ba1 511
1d22e906 512 r = mac_selinux_unit_access_check(u, message, "stop", error);
283868e1
SW		 513 if (r < 0)
514 return r;
283868e1 515
718db961
LP		 516 r = sd_bus_message_read(message, "si", &swho, &signo);
517 if (r < 0)
ebcf1f97 518 return r;
718db961
LP		 519
520 if (isempty(swho))
521 who = KILL_ALL;
522 else {
523 who = kill_who_from_string(swho);
524 if (who < 0)
ebcf1f97 525 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
718db961 526 }
5632e374 527
6eb7c172 528 if (!SIGNAL_VALID(signo))
ebcf1f97 529 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
8e2af478 530
88ced61b
MC		 531 r = bus_verify_manage_units_async_full(
532 u,
533 "kill",
534 CAP_KILL,
1d445eda 535 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
05a98afd 536 true,
88ced61b
MC		 537 message,
538 error);
ebcf1f97
LP		 539 if (r < 0)
540 return r;
1d22e906
LP		 541 if (r == 0)
542 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
8e2af478 543
ebcf1f97 544 r = unit_kill(u, who, signo, error);
718db961 545 if (r < 0)
ebcf1f97 546 return r;
8e2af478 547
df2d202e 548 return sd_bus_reply_method_return(message, NULL);
718db961 549}
8e2af478 550
19070062 551int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961 552 Unit *u = userdata;
ebcf1f97 553 int r;
b548631a 554
718db961
LP		 555 assert(message);
556 assert(u);
b548631a 557
1d22e906 558 r = mac_selinux_unit_access_check(u, message, "reload", error);
283868e1
SW		 559 if (r < 0)
560 return r;
283868e1 561
88ced61b
MC		 562 r = bus_verify_manage_units_async_full(
563 u,
564 "reset-failed",
565 CAP_SYS_ADMIN,
566 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
05a98afd 567 true,
88ced61b
MC		 568 message,
569 error);
ebcf1f97
LP		 570 if (r < 0)
571 return r;
1d22e906
LP		 572 if (r == 0)
573 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
b548631a 574
718db961 575 unit_reset_failed(u);
b548631a 576
df2d202e 577 return sd_bus_reply_method_return(message, NULL);
ea430986
LP		 578}
579
19070062 580int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 581 Unit *u = userdata;
582 int runtime, r;
ea430986 583
ea430986 584 assert(message);
718db961 585 assert(u);
80fbf05e 586
1d22e906 587 r = mac_selinux_unit_access_check(u, message, "start", error);
283868e1
SW		 588 if (r < 0)
589 return r;
283868e1 590
718db961
LP		 591 r = sd_bus_message_read(message, "b", &runtime);
592 if (r < 0)
ebcf1f97 593 return r;
2cccbca4 594
88ced61b
MC		 595 r = bus_verify_manage_units_async_full(
596 u,
597 "set-property",
598 CAP_SYS_ADMIN,
599 N_("Authentication is required to set properties on '$(unit)'."),
05a98afd 600 true,
88ced61b
MC		 601 message,
602 error);
ebcf1f97
LP		 603 if (r < 0)
604 return r;
1d22e906
LP		 605 if (r == 0)
606 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
cad45ba1 607
ebcf1f97 608 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
718db961 609 if (r < 0)
ebcf1f97 610 return r;
2cccbca4 611
df2d202e 612 return sd_bus_reply_method_return(message, NULL);
718db961 613}
2cccbca4 614
05a98afd
LP		 615int bus_unit_method_ref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
616 Unit *u = userdata;
617 int r;
618
619 assert(message);
620 assert(u);
621
622 r = mac_selinux_unit_access_check(u, message, "start", error);
623 if (r < 0)
624 return r;
625
626 r = bus_verify_manage_units_async_full(
627 u,
628 "ref",
629 CAP_SYS_ADMIN,
630 NULL,
631 false,
632 message,
633 error);
634 if (r < 0)
635 return r;
636 if (r == 0)
637 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
638
639 r = bus_unit_track_add_sender(u, message);
640 if (r < 0)
641 return r;
642
643 return sd_bus_reply_method_return(message, NULL);
644}
645
646int bus_unit_method_unref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
647 Unit *u = userdata;
648 int r;
649
650 assert(message);
651 assert(u);
652
653 r = bus_unit_track_remove_sender(u, message);
654 if (r == -EUNATCH)
655 return sd_bus_error_setf(error, BUS_ERROR_NOT_REFERENCED, "Unit has not been referenced yet.");
656 if (r < 0)
657 return r;
658
659 return sd_bus_reply_method_return(message, NULL);
660}
661
4d3bac56
LP		 662int bus_unit_method_clean(sd_bus_message *message, void *userdata, sd_bus_error *error) {
663 ExecCleanMask mask = 0;
664 Unit *u = userdata;
665 int r;
666
667 assert(message);
668 assert(u);
669
670 r = mac_selinux_unit_access_check(u, message, "stop", error);
671 if (r < 0)
672 return r;
673
674 r = sd_bus_message_enter_container(message, 'a', "s");
675 if (r < 0)
676 return r;
677
678 for (;;) {
679 const char *i;
680
681 r = sd_bus_message_read(message, "s", &i);
682 if (r < 0)
683 return r;
684 if (r == 0)
685 break;
686
687 if (streq(i, "all"))
688 mask |= EXEC_CLEAN_ALL;
689 else {
690 ExecDirectoryType t;
691
692 t = exec_resource_type_from_string(i);
693 if (t < 0)
694 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid resource type: %s", i);
695
696 mask |= 1U << t;
697 }
698 }
699
700 r = sd_bus_message_exit_container(message);
701 if (r < 0)
702 return r;
703
704 r = bus_verify_manage_units_async_full(
705 u,
706 "clean",
707 CAP_DAC_OVERRIDE,
708 N_("Authentication is required to delete files and directories associated with '$(unit)'."),
709 true,
710 message,
711 error);
712 if (r < 0)
713 return r;
714 if (r == 0)
715 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
716
717 r = unit_clean(u, mask);
718 if (r == -EOPNOTSUPP)
719 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not supporting cleaning.", u->id);
720 if (r == -EUNATCH)
721 return sd_bus_error_setf(error, BUS_ERROR_NOTHING_TO_CLEAN, "No matching resources found.");
722 if (r == -EBUSY)
723 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit is not inactive or has pending job.");
724 if (r < 0)
725 return r;
726
727 return sd_bus_reply_method_return(message, NULL);
728}
729
d9e45bc3
MS		 730static int bus_unit_method_freezer_generic(sd_bus_message *message, void *userdata, sd_bus_error *error, FreezerAction action) {
731 const char* perm;
732 int (*method)(Unit*);
733 Unit *u = userdata;
734 bool reply_no_delay = false;
735 int r;
736
737 assert(message);
738 assert(u);
739 assert(IN_SET(action, FREEZER_FREEZE, FREEZER_THAW));
740
741 if (action == FREEZER_FREEZE) {
742 perm = "stop";
743 method = unit_freeze;
744 } else {
745 perm = "start";
746 method = unit_thaw;
747 }
748
749 r = mac_selinux_unit_access_check(u, message, perm, error);
750 if (r < 0)
751 return r;
752
753 r = bus_verify_manage_units_async_full(
754 u,
755 perm,
756 CAP_SYS_ADMIN,
757 N_("Authentication is required to freeze or thaw the processes of '$(unit)' unit."),
758 true,
759 message,
760 error);
761 if (r < 0)
762 return r;
763 if (r == 0)
764 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
765
766 r = method(u);
767 if (r == -EOPNOTSUPP)
768 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not support freezing.", u->id);
769 if (r == -EBUSY)
770 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit has a pending job.");
771 if (r == -EHOSTDOWN)
772 return sd_bus_error_setf(error, BUS_ERROR_UNIT_INACTIVE, "Unit is inactive.");
773 if (r == -EALREADY)
774 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Previously requested freezer operation for unit '%s' is still in progress.", u->id);
775 if (r < 0)
776 return r;
777 if (r == 0)
778 reply_no_delay = true;
779
780 assert(!u->pending_freezer_message);
781
782 r = sd_bus_message_new_method_return(message, &u->pending_freezer_message);
783 if (r < 0)
784 return r;
785
786 if (reply_no_delay) {
787 r = bus_unit_send_pending_freezer_message(u);
788 if (r < 0)
789 return r;
790 }
791
792 return 1;
793}
794
795int bus_unit_method_thaw(sd_bus_message *message, void *userdata, sd_bus_error *error) {
796 return bus_unit_method_freezer_generic(message, userdata, error, FREEZER_THAW);
797}
798
799int bus_unit_method_freeze(sd_bus_message *message, void *userdata, sd_bus_error *error) {
800 return bus_unit_method_freezer_generic(message, userdata, error, FREEZER_FREEZE);
801}
802
bedea99d
LP		 803static int property_get_refs(
804 sd_bus *bus,
805 const char *path,
806 const char *interface,
807 const char *property,
808 sd_bus_message *reply,
809 void *userdata,
810 sd_bus_error *error) {
811
812 Unit *u = userdata;
813 const char *i;
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
823 for (i = sd_bus_track_first(u->bus_track); i; i = sd_bus_track_next(u->bus_track)) {
824 int c, k;
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 */
831 for (k = 0; k < c; k++) {
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
LP		 898 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
899 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
a2df3ea4 900 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_running_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 901 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
f189ab18 902 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 903 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 904 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 905 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 906 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
e18f8852
LP		 907 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
908 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
fd1e3fd8 909 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 910 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
f5869324 911 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool, offsetof(Unit, perpetual), SD_BUS_VTABLE_PROPERTY_CONST),
7bf081a1
ZJS		 912 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
913 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_ratelimit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 914 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
53c35a76 915 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 916 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int, offsetof(Unit, failure_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
e7dfbb4e 917 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action, offsetof(Unit, success_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 918 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int, offsetof(Unit, success_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
6bf0f408 919 SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
af92c603 920 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
641e0d7a 921 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), SD_BUS_VTABLE_PROPERTY_CONST),
bedea99d 922 SD_BUS_PROPERTY("Refs", "as", property_get_refs, 0, 0),
718db961 923
dad97f04
ZJS		 924 SD_BUS_METHOD_WITH_NAMES("Start",
925 "s",
926 SD_BUS_PARAM(mode),
927 "o",
928 SD_BUS_PARAM(job),
929 method_start,
930 SD_BUS_VTABLE_UNPRIVILEGED),
931 SD_BUS_METHOD_WITH_NAMES("Stop",
932 "s",
933 SD_BUS_PARAM(mode),
934 "o",
935 SD_BUS_PARAM(job),
936 method_stop,
937 SD_BUS_VTABLE_UNPRIVILEGED),
938 SD_BUS_METHOD_WITH_NAMES("Reload",
939 "s",
940 SD_BUS_PARAM(mode),
941 "o",
942 SD_BUS_PARAM(job),
943 method_reload,
944 SD_BUS_VTABLE_UNPRIVILEGED),
945 SD_BUS_METHOD_WITH_NAMES("Restart",
946 "s",
947 SD_BUS_PARAM(mode),
948 "o",
949 SD_BUS_PARAM(job),
950 method_restart,
951 SD_BUS_VTABLE_UNPRIVILEGED),
952 SD_BUS_METHOD_WITH_NAMES("TryRestart",
953 "s",
954 SD_BUS_PARAM(mode),
955 "o",
956 SD_BUS_PARAM(job),
957 method_try_restart,
958 SD_BUS_VTABLE_UNPRIVILEGED),
959 SD_BUS_METHOD_WITH_NAMES("ReloadOrRestart",
960 "s",
961 SD_BUS_PARAM(mode),
962 "o",
963 SD_BUS_PARAM(job),
964 method_reload_or_restart,
965 SD_BUS_VTABLE_UNPRIVILEGED),
966 SD_BUS_METHOD_WITH_NAMES("ReloadOrTryRestart",
967 "s",
968 SD_BUS_PARAM(mode),
969 "o",
970 SD_BUS_PARAM(job),
971 method_reload_or_try_restart,
972 SD_BUS_VTABLE_UNPRIVILEGED),
973 SD_BUS_METHOD_WITH_NAMES("EnqueueJob",
974 "ss",
975 SD_BUS_PARAM(job_type)
976 SD_BUS_PARAM(job_mode),
977 "uososa(uosos)",
978 SD_BUS_PARAM(job_id)
979 SD_BUS_PARAM(job_path)
980 SD_BUS_PARAM(unit_id)
981 SD_BUS_PARAM(unit_path)
982 SD_BUS_PARAM(job_type)
983 SD_BUS_PARAM(affected_jobs),
984 bus_unit_method_enqueue_job,
985 SD_BUS_VTABLE_UNPRIVILEGED),
986 SD_BUS_METHOD_WITH_NAMES("Kill",
987 "si",
988 SD_BUS_PARAM(whom)
989 SD_BUS_PARAM(signal),
990 NULL,,
991 bus_unit_method_kill,
992 SD_BUS_VTABLE_UNPRIVILEGED),
993 SD_BUS_METHOD("ResetFailed",
994 NULL,
995 NULL,
996 bus_unit_method_reset_failed,
997 SD_BUS_VTABLE_UNPRIVILEGED),
998 SD_BUS_METHOD_WITH_NAMES("SetProperties",
999 "ba(sv)",
1000 SD_BUS_PARAM(runtime)
1001 SD_BUS_PARAM(properties),
1002 NULL,,
1003 bus_unit_method_set_properties,
1004 SD_BUS_VTABLE_UNPRIVILEGED),
1005 SD_BUS_METHOD("Ref",
1006 NULL,
1007 NULL,
1008 bus_unit_method_ref,
1009 SD_BUS_VTABLE_UNPRIVILEGED),
1010 SD_BUS_METHOD("Unref",
1011 NULL,
1012 NULL,
1013 bus_unit_method_unref,
1014 SD_BUS_VTABLE_UNPRIVILEGED),
1015 SD_BUS_METHOD_WITH_NAMES("Clean",
1016 "as",
1017 SD_BUS_PARAM(mask),
1018 NULL,,
1019 bus_unit_method_clean,
1020 SD_BUS_VTABLE_UNPRIVILEGED),
d9e45bc3
MS		 1021 SD_BUS_METHOD("Freeze",
1022 NULL,
1023 NULL,
1024 bus_unit_method_freeze,
1025 SD_BUS_VTABLE_UNPRIVILEGED),
1026 SD_BUS_METHOD("Thaw",
1027 NULL,
1028 NULL,
1029 bus_unit_method_thaw,
1030 SD_BUS_VTABLE_UNPRIVILEGED),
718db961 1031
92c23c5a
YW		 1032 /* For dependency types we don't support anymore always return an empty array */
1033 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1034 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1035 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1036 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
1037 /* Obsolete alias names */
7bf081a1
ZJS		 1038 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
1039 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
dad97f04 1040
718db961
LP		 1041 SD_BUS_VTABLE_END
1042};
2cccbca4 1043
718db961
LP		 1044static int property_get_slice(
1045 sd_bus *bus,
1046 const char *path,
1047 const char *interface,
1048 const char *property,
1049 sd_bus_message *reply,
ebcf1f97
LP		 1050 void *userdata,
1051 sd_bus_error *error) {
2cccbca4 1052
718db961 1053 Unit *u = userdata;
2cccbca4 1054
718db961
LP		 1055 assert(bus);
1056 assert(reply);
1057 assert(u);
2cccbca4 1058
718db961
LP		 1059 return sd_bus_message_append(reply, "s", unit_slice_name(u));
1060}
2cccbca4 1061
934277fe
LP		 1062static int property_get_current_memory(
1063 sd_bus *bus,
1064 const char *path,
1065 const char *interface,
1066 const char *property,
1067 sd_bus_message *reply,
1068 void *userdata,
1069 sd_bus_error *error) {
1070
934277fe 1071 uint64_t sz = (uint64_t) -1;
5ad096b3 1072 Unit *u = userdata;
934277fe
LP		 1073 int r;
1074
1075 assert(bus);
1076 assert(reply);
1077 assert(u);
1078
5ad096b3
LP		 1079 r = unit_get_memory_current(u, &sz);
1080 if (r < 0 && r != -ENODATA)
f2341e0a 1081 log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m");
934277fe 1082
5ad096b3
LP		 1083 return sd_bus_message_append(reply, "t", sz);
1084}
934277fe 1085
03a7b521
LP		 1086static int property_get_current_tasks(
1087 sd_bus *bus,
1088 const char *path,
1089 const char *interface,
1090 const char *property,
1091 sd_bus_message *reply,
1092 void *userdata,
1093 sd_bus_error *error) {
1094
1095 uint64_t cn = (uint64_t) -1;
1096 Unit *u = userdata;
1097 int r;
1098
1099 assert(bus);
1100 assert(reply);
1101 assert(u);
1102
1103 r = unit_get_tasks_current(u, &cn);
1104 if (r < 0 && r != -ENODATA)
1105 log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m");
1106
1107 return sd_bus_message_append(reply, "t", cn);
1108}
1109
5ad096b3
LP		 1110static int property_get_cpu_usage(
1111 sd_bus *bus,
1112 const char *path,
1113 const char *interface,
1114 const char *property,
1115 sd_bus_message *reply,
1116 void *userdata,
1117 sd_bus_error *error) {
934277fe 1118
5ad096b3
LP		 1119 nsec_t ns = (nsec_t) -1;
1120 Unit *u = userdata;
1121 int r;
1122
1123 assert(bus);
1124 assert(reply);
1125 assert(u);
1126
1127 r = unit_get_cpu_usage(u, &ns);
1128 if (r < 0 && r != -ENODATA)
f2341e0a 1129 log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m");
5ad096b3
LP		 1130
1131 return sd_bus_message_append(reply, "t", ns);
934277fe
LP		 1132}
1133
047f5d63
PH		 1134static int property_get_cpuset_cpus(
1135 sd_bus *bus,
1136 const char *path,
1137 const char *interface,
1138 const char *property,
1139 sd_bus_message *reply,
1140 void *userdata,
1141 sd_bus_error *error) {
1142
1143 Unit *u = userdata;
1144 _cleanup_(cpu_set_reset) CPUSet cpus = {};
1145 _cleanup_free_ uint8_t *array = NULL;
1146 size_t allocated;
1147
1148 assert(bus);
1149 assert(reply);
1150 assert(u);
1151
1152 (void) unit_get_cpuset(u, &cpus, "cpuset.cpus.effective");
1153 (void) cpu_set_to_dbus(&cpus, &array, &allocated);
1154 return sd_bus_message_append_array(reply, 'y', array, allocated);
1155}
1156
1157static int property_get_cpuset_mems(
1158 sd_bus *bus,
1159 const char *path,
1160 const char *interface,
1161 const char *property,
1162 sd_bus_message *reply,
1163 void *userdata,
1164 sd_bus_error *error) {
1165
1166 Unit *u = userdata;
1167 _cleanup_(cpu_set_reset) CPUSet mems = {};
1168 _cleanup_free_ uint8_t *array = NULL;
1169 size_t allocated;
1170
1171 assert(bus);
1172 assert(reply);
1173 assert(u);
1174
1175 (void) unit_get_cpuset(u, &mems, "cpuset.mems.effective");
1176 (void) cpu_set_to_dbus(&mems, &array, &allocated);
1177 return sd_bus_message_append_array(reply, 'y', array, allocated);
1178}
1179
98bac605
LP		 1180static int property_get_cgroup(
1181 sd_bus *bus,
1182 const char *path,
1183 const char *interface,
1184 const char *property,
1185 sd_bus_message *reply,
1186 void *userdata,
1187 sd_bus_error *error) {
1188
1189 Unit *u = userdata;
79a60375 1190 const char *t = NULL;
98bac605
LP		 1191
1192 assert(bus);
1193 assert(reply);
1194 assert(u);
1195
1196 /* Three cases: a) u->cgroup_path is NULL, in which case the
1197 * unit has no control group, which we report as the empty
1198 * string. b) u->cgroup_path is the empty string, which
1199 * indicates the root cgroup, which we report as "/". c) all
1200 * other cases we report as-is. */
1201
1202 if (u->cgroup_path)
945403e6 1203 t = empty_to_root(u->cgroup_path);
98bac605
LP		 1204
1205 return sd_bus_message_append(reply, "s", t);
1206}
1207
291d565a
LP		 1208static int append_process(sd_bus_message *reply, const char *p, pid_t pid, Set *pids) {
1209 _cleanup_free_ char *buf = NULL, *cmdline = NULL;
1210 int r;
1211
1212 assert(reply);
1213 assert(pid > 0);
1214
1215 r = set_put(pids, PID_TO_PTR(pid));
4c701096 1216 if (IN_SET(r, 0, -EEXIST))
291d565a
LP		 1217 return 0;
1218 if (r < 0)
1219 return r;
1220
1221 if (!p) {
1222 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &buf);
1223 if (r == -ESRCH)
1224 return 0;
1225 if (r < 0)
1226 return r;
1227
1228 p = buf;
1229 }
1230
09c1dcee 1231 (void) get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &cmdline);
291d565a
LP		 1232
1233 return sd_bus_message_append(reply,
1234 "(sus)",
1235 p,
1236 (uint32_t) pid,
1237 cmdline);
1238}
1239
1240static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
1241 _cleanup_closedir_ DIR *d = NULL;
1242 _cleanup_fclose_ FILE *f = NULL;
1243 int r;
1244
1245 assert(reply);
1246 assert(p);
1247
1248 r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, p, &f);
24715314 1249 if (r == -ENOENT)
291d565a
LP		 1250 return 0;
1251 if (r < 0)
1252 return r;
1253
1254 for (;;) {
1255 pid_t pid;
1256
1257 r = cg_read_pid(f, &pid);
1258 if (r < 0)
1259 return r;
1260 if (r == 0)
1261 break;
1262
1263 if (is_kernel_thread(pid) > 0)
1264 continue;
1265
1266 r = append_process(reply, p, pid, pids);
1267 if (r < 0)
1268 return r;
1269 }
1270
1271 r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, p, &d);
1272 if (r == -ENOENT)
1273 return 0;
1274 if (r < 0)
1275 return r;
1276
1277 for (;;) {
1278 _cleanup_free_ char *g = NULL, *j = NULL;
1279
1280 r = cg_read_subgroup(d, &g);
1281 if (r < 0)
1282 return r;
1283 if (r == 0)
1284 break;
1285
624e4fcf 1286 j = path_join(empty_to_root(p), g);
291d565a
LP		 1287 if (!j)
1288 return -ENOMEM;
1289
1290 r = append_cgroup(reply, j, pids);
1291 if (r < 0)
1292 return r;
1293 }
1294
1295 return 0;
1296}
1297
1298int bus_unit_method_get_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1299 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
af4fa99d 1300 _cleanup_set_free_ Set *pids = NULL;
291d565a
LP		 1301 Unit *u = userdata;
1302 pid_t pid;
1303 int r;
1304
1305 assert(message);
1306
807fa5d9
LP		 1307 r = mac_selinux_unit_access_check(u, message, "status", error);
1308 if (r < 0)
1309 return r;
1310
291d565a
LP		 1311 pids = set_new(NULL);
1312 if (!pids)
1313 return -ENOMEM;
1314
1315 r = sd_bus_message_new_method_return(message, &reply);
1316 if (r < 0)
1317 return r;
1318
1319 r = sd_bus_message_open_container(reply, 'a', "(sus)");
1320 if (r < 0)
1321 return r;
1322
1323 if (u->cgroup_path) {
1324 r = append_cgroup(reply, u->cgroup_path, pids);
1325 if (r < 0)
1326 return r;
1327 }
1328
1329 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1330 pid = unit_main_pid(u);
1331 if (pid > 0) {
1332 r = append_process(reply, NULL, pid, pids);
1333 if (r < 0)
1334 return r;
1335 }
1336
1337 pid = unit_control_pid(u);
1338 if (pid > 0) {
1339 r = append_process(reply, NULL, pid, pids);
1340 if (r < 0)
1341 return r;
1342 }
1343
1344 r = sd_bus_message_close_container(reply);
1345 if (r < 0)
1346 return r;
1347
1348 return sd_bus_send(NULL, reply, NULL);
1349}
1350
906c06f6
DM		 1351static int property_get_ip_counter(
1352 sd_bus *bus,
1353 const char *path,
1354 const char *interface,
1355 const char *property,
1356 sd_bus_message *reply,
1357 void *userdata,
1358 sd_bus_error *error) {
1359
83f18c91
LP		 1360 static const char *const table[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = {
1361 [CGROUP_IP_INGRESS_BYTES] = "IPIngressBytes",
1362 [CGROUP_IP_EGRESS_BYTES] = "IPEgressBytes",
1363 [CGROUP_IP_INGRESS_PACKETS] = "IPIngressPackets",
1364 [CGROUP_IP_EGRESS_PACKETS] = "IPEgressPackets",
1365 };
1366
1367 uint64_t value = UINT64_MAX;
906c06f6 1368 Unit *u = userdata;
83f18c91 1369 ssize_t metric;
906c06f6
DM		 1370
1371 assert(bus);
1372 assert(reply);
1373 assert(property);
1374 assert(u);
1375
83f18c91 1376 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
906c06f6
DM		 1377 (void) unit_get_ip_accounting(u, metric, &value);
1378 return sd_bus_message_append(reply, "t", value);
1379}
1380
fbe14fc9
LP		 1381static int property_get_io_counter(
1382 sd_bus *bus,
1383 const char *path,
1384 const char *interface,
1385 const char *property,
1386 sd_bus_message *reply,
1387 void *userdata,
1388 sd_bus_error *error) {
1389
1390 static const char *const table[_CGROUP_IO_ACCOUNTING_METRIC_MAX] = {
1391 [CGROUP_IO_READ_BYTES] = "IOReadBytes",
1392 [CGROUP_IO_WRITE_BYTES] = "IOWriteBytes",
1393 [CGROUP_IO_READ_OPERATIONS] = "IOReadOperations",
1394 [CGROUP_IO_WRITE_OPERATIONS] = "IOWriteOperations",
1395 };
1396
1397 uint64_t value = UINT64_MAX;
1398 Unit *u = userdata;
1399 ssize_t metric;
1400
1401 assert(bus);
1402 assert(reply);
1403 assert(property);
1404 assert(u);
1405
1406 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
1407 (void) unit_get_io_accounting(u, metric, false, &value);
1408 return sd_bus_message_append(reply, "t", value);
1409}
1410
6592b975
LP		 1411int bus_unit_method_attach_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1412
1413 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
af4fa99d 1414 _cleanup_set_free_ Set *pids = NULL;
6592b975
LP		 1415 Unit *u = userdata;
1416 const char *path;
1417 int r;
1418
1419 assert(message);
1420
1421 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1422 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1423 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1424 * subcgroup path has no effect! */
1425
1426 r = mac_selinux_unit_access_check(u, message, "start", error);
1427 if (r < 0)
1428 return r;
1429
1430 r = sd_bus_message_read(message, "s", &path);
1431 if (r < 0)
1432 return r;
1433
1434 path = empty_to_null(path);
1435 if (path) {
1436 if (!path_is_absolute(path))
1437 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not absolute: %s", path);
1438
1439 if (!path_is_normalized(path))
1440 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not normalized: %s", path);
1441 }
1442
1443 if (!unit_cgroup_delegate(u))
1444 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Process migration not available on non-delegated units.");
1445
1446 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)))
1447 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit is not active, refusing.");
1448
1449 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
1450 if (r < 0)
1451 return r;
1452
1453 r = sd_bus_message_enter_container(message, 'a', "u");
1454 if (r < 0)
1455 return r;
1456 for (;;) {
1457 uid_t process_uid, sender_uid;
1458 uint32_t upid;
1459 pid_t pid;
1460
1461 r = sd_bus_message_read(message, "u", &upid);
1462 if (r < 0)
1463 return r;
1464 if (r == 0)
1465 break;
1466
1467 if (upid == 0) {
1468 r = sd_bus_creds_get_pid(creds, &pid);
1469 if (r < 0)
1470 return r;
1471 } else
1472 pid = (uid_t) upid;
1473
1474 /* Filter out duplicates */
1475 if (set_contains(pids, PID_TO_PTR(pid)))
1476 continue;
1477
1478 /* Check if this process is suitable for attaching to this unit */
1479 r = unit_pid_attachable(u, pid, error);
1480 if (r < 0)
1481 return r;
1482
1483 /* Let's query the sender's UID, so that we can make our security decisions */
1484 r = sd_bus_creds_get_euid(creds, &sender_uid);
1485 if (r < 0)
1486 return r;
1487
874b5ad2 1488 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
6592b975
LP		 1489 * then the process' UID and the target unit's UID have to match the sender's UID */
1490 if (sender_uid != 0 && sender_uid != getuid()) {
1491 r = get_process_uid(pid, &process_uid);
1492 if (r < 0)
1493 return sd_bus_error_set_errnof(error, r, "Failed to retrieve process UID: %m");
1494
1495 if (process_uid != sender_uid)
1496 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by client's UID. Refusing.", pid);
1497 if (process_uid != u->ref_uid)
1498 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by target unit's UID. Refusing.", pid);
1499 }
1500
1501 if (!pids) {
1502 pids = set_new(NULL);
1503 if (!pids)
1504 return -ENOMEM;
1505 }
1506
1507 r = set_put(pids, PID_TO_PTR(pid));
1508 if (r < 0)
1509 return r;
1510 }
1511
1512 r = sd_bus_message_exit_container(message);
1513 if (r < 0)
1514 return r;
1515
1516 r = unit_attach_pids_to_cgroup(u, pids, path);
1517 if (r < 0)
1518 return sd_bus_error_set_errnof(error, r, "Failed to attach processes to control group: %m");
1519
1520 return sd_bus_reply_method_return(message, NULL);
1521}
1522
718db961
LP		 1523const sd_bus_vtable bus_unit_cgroup_vtable[] = {
1524 SD_BUS_VTABLE_START(0),
1525 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
98bac605 1526 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0),
934277fe 1527 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
5ad096b3 1528 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0),
047f5d63
PH		 1529 SD_BUS_PROPERTY("EffectiveCPUs", "ay", property_get_cpuset_cpus, 0, 0),
1530 SD_BUS_PROPERTY("EffectiveMemoryNodes", "ay", property_get_cpuset_mems, 0, 0),
03a7b521 1531 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0),
906c06f6
DM		 1532 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter, 0, 0),
1533 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter, 0, 0),
1534 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter, 0, 0),
1535 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter, 0, 0),
fbe14fc9
LP		 1536 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter, 0, 0),
1537 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter, 0, 0),
1538 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter, 0, 0),
1539 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter, 0, 0),
dad97f04
ZJS		 1540
1541 SD_BUS_METHOD_WITH_NAMES("GetProcesses",
1542 NULL,,
1543 "a(sus)",
1544 SD_BUS_PARAM(processes),
1545 bus_unit_method_get_processes,
1546 SD_BUS_VTABLE_UNPRIVILEGED),
1547
1548 SD_BUS_METHOD_WITH_NAMES("AttachProcesses",
1549 "sau",
1550 SD_BUS_PARAM(subcgroup)
1551 SD_BUS_PARAM(pids),
1552 NULL,,
1553 bus_unit_method_attach_processes,
1554 SD_BUS_VTABLE_UNPRIVILEGED),
1555
718db961
LP		 1556 SD_BUS_VTABLE_END
1557};
2cccbca4 1558
8f8f05a9 1559static int send_new_signal(sd_bus *bus, void *userdata) {
4afd3348 1560 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1561 _cleanup_free_ char *p = NULL;
1562 Unit *u = userdata;
1563 int r;
2cccbca4 1564
718db961
LP		 1565 assert(bus);
1566 assert(u);
2cccbca4 1567
718db961 1568 p = unit_dbus_path(u);
e861098b 1569 if (!p)
718db961 1570 return -ENOMEM;
2cccbca4 1571
718db961
LP		 1572 r = sd_bus_message_new_signal(
1573 bus,
151b9b96 1574 &m,
718db961
LP		 1575 "/org/freedesktop/systemd1",
1576 "org.freedesktop.systemd1.Manager",
151b9b96 1577 "UnitNew");
718db961
LP		 1578 if (r < 0)
1579 return r;
2cccbca4 1580
718db961
LP		 1581 r = sd_bus_message_append(m, "so", u->id, p);
1582 if (r < 0)
1583 return r;
2cccbca4 1584
8f8f05a9 1585 return sd_bus_send(bus, m, NULL);
718db961 1586}
2cccbca4 1587
8f8f05a9 1588static int send_changed_signal(sd_bus *bus, void *userdata) {
718db961
LP		 1589 _cleanup_free_ char *p = NULL;
1590 Unit *u = userdata;
1591 int r;
2cccbca4 1592
718db961
LP		 1593 assert(bus);
1594 assert(u);
2cccbca4 1595
718db961 1596 p = unit_dbus_path(u);
9ceefc81 1597 if (!p)
718db961 1598 return -ENOMEM;
2cccbca4 1599
718db961
LP		 1600 /* Send a properties changed signal. First for the specific
1601 * type, then for the generic unit. The clients may rely on
1602 * this order to get atomic behavior if needed. */
ea430986 1603
aec8de63
LP		 1604 r = sd_bus_emit_properties_changed_strv(
1605 bus, p,
21b735e7 1606 unit_dbus_interface_from_type(u->type),
aec8de63 1607 NULL);
fe7f06f1 1608 if (r < 0)
aec8de63 1609 return r;
80fbf05e 1610
fe7f06f1 1611 return sd_bus_emit_properties_changed_strv(
718db961
LP		 1612 bus, p,
1613 "org.freedesktop.systemd1.Unit",
718db961 1614 NULL);
ea430986
LP		 1615}
1616
c1e1601e 1617void bus_unit_send_change_signal(Unit *u) {
b170dd80 1618 int r;
c1e1601e 1619 assert(u);
c1e1601e 1620
ac155bb8 1621 if (u->in_dbus_queue) {
71fda00f 1622 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
ac155bb8 1623 u->in_dbus_queue = false;
c0bd0cf7 1624 }
c1e1601e 1625
ac155bb8 1626 if (!u->id)
04ade7d2
LP		 1627 return;
1628
ae572acd 1629 r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
718db961 1630 if (r < 0)
f2341e0a 1631 log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
c1e1601e 1632
718db961
LP		 1633 u->sent_dbus_new_signal = true;
1634}
c4e2ceae 1635
6fcbec6f
LP		 1636void bus_unit_send_pending_change_signal(Unit *u, bool including_new) {
1637
1638 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1639 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1640 * so that clients can follow the full state transition */
1641
1642 if (!u->in_dbus_queue) /* If not enqueued, don't bother */
1643 return;
1644
1645 if (!u->sent_dbus_new_signal && !including_new) /* If the unit was never announced, don't bother, it's fine if
1646 * the unit appears in the new state right-away (except if the
1647 * caller explicitly asked us to send it anyway) */
1648 return;
1649
1650 if (MANAGER_IS_RELOADING(u->manager)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1651 * when we are reloading. */
1652 return;
1653
1654 bus_unit_send_change_signal(u);
1655}
1656
d9e45bc3
MS		 1657int bus_unit_send_pending_freezer_message(Unit *u) {
1658 int r;
1659
1660 assert(u);
1661
1662 if (!u->pending_freezer_message)
1663 return 0;
1664
1665 r = sd_bus_send(NULL, u->pending_freezer_message, NULL);
1666 if (r < 0)
1667 log_warning_errno(r, "Failed to send queued message, ignoring: %m");
1668
1669 u->pending_freezer_message = sd_bus_message_unref(u->pending_freezer_message);
1670
1671 return 0;
1672}
1673
8f8f05a9 1674static int send_removed_signal(sd_bus *bus, void *userdata) {
4afd3348 1675 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1676 _cleanup_free_ char *p = NULL;
1677 Unit *u = userdata;
1678 int r;
c4e2ceae 1679
718db961
LP		 1680 assert(bus);
1681 assert(u);
c1e1601e 1682
718db961 1683 p = unit_dbus_path(u);
e861098b 1684 if (!p)
718db961 1685 return -ENOMEM;
c1e1601e 1686
718db961
LP		 1687 r = sd_bus_message_new_signal(
1688 bus,
151b9b96 1689 &m,
718db961
LP		 1690 "/org/freedesktop/systemd1",
1691 "org.freedesktop.systemd1.Manager",
151b9b96 1692 "UnitRemoved");
718db961
LP		 1693 if (r < 0)
1694 return r;
c1e1601e 1695
718db961
LP		 1696 r = sd_bus_message_append(m, "so", u->id, p);
1697 if (r < 0)
1698 return r;
c1e1601e 1699
8f8f05a9 1700 return sd_bus_send(bus, m, NULL);
c1e1601e
LP		 1701}
1702
1703void bus_unit_send_removed_signal(Unit *u) {
718db961 1704 int r;
c1e1601e
LP		 1705 assert(u);
1706
0dd99f86 1707 if (!u->sent_dbus_new_signal || u->in_dbus_queue)
7535cc78
LP		 1708 bus_unit_send_change_signal(u);
1709
ac155bb8 1710 if (!u->id)
04ade7d2
LP		 1711 return;
1712
ae572acd 1713 r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u);
718db961 1714 if (r < 0)
f2341e0a 1715 log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
c1e1601e 1716}
e2110e5d 1717
718db961 1718int bus_unit_queue_job(
718db961 1719 sd_bus_message *message,
cad45ba1
LP		 1720 Unit *u,
1721 JobType type,
1722 JobMode mode,
50cbaba4 1723 BusUnitQueueFlags flags,
ebcf1f97 1724 sd_bus_error *error) {
cad45ba1 1725
50cbaba4
LP		 1726 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1727 _cleanup_free_ char *job_path = NULL, *unit_path = NULL;
e57ac1b0 1728 _cleanup_set_free_ Set *affected = NULL;
50cbaba4 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
90e74a66 1807 SET_FOREACH(a, affected) {
50cbaba4
LP		 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
476cfe62
LP		 1973 if (isempty(param))
1974 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Condition parameter in %s is empty", type_name);
faa781cf 1975
476cfe62
LP		 1976 if (condition_takes_path(t) && !path_is_absolute(param))
1977 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in condition %s is not absolute: %s", type_name, param);
faa781cf
YW		 1978
1979 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1980 Condition *c;
1981
1982 c = condition_new(t, param, trigger, negate);
1983 if (!c)
1984 return -ENOMEM;
1985
1986 LIST_PREPEND(conditions, *list, c);
1987
476cfe62
LP		 1988 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name,
1989 "%s=%s%s%s", type_name,
1990 trigger ? "|" : "", negate ? "!" : "", param);
faa781cf
YW		 1991 }
1992
1993 empty = false;
1994 }
1995 if (r < 0)
1996 return r;
1997
1998 r = sd_bus_message_exit_container(message);
1999 if (r < 0)
2000 return r;
2001
2002 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
2003 *list = condition_free_list(*list);
2004 unit_write_settingf(u, flags, name, "%sNull=", is_condition ? "Condition" : "Assert");
2005 }
2006
2007 return 1;
2008}
2009
721060d4
LP		 2010static int bus_unit_set_transient_property(
2011 Unit *u,
2012 const char *name,
2013 sd_bus_message *message,
2014 UnitWriteFlags flags,
2015 sd_bus_error *error) {
2016
faa781cf 2017 UnitDependency d = _UNIT_DEPENDENCY_INVALID;
721060d4 2018 int r;
261420ba 2019
721060d4
LP		 2020 assert(u);
2021 assert(name);
2022 assert(message);
2023
2024 /* Handles settings when transient units are created. This settings cannot be altered anymore after the unit
2025 * has been created. */
2026
faa781cf
YW		 2027 if (streq(name, "SourcePath"))
2028 return bus_set_transient_path(u, name, &u->source_path, message, flags, error);
261420ba 2029
faa781cf
YW		 2030 if (streq(name, "StopWhenUnneeded"))
2031 return bus_set_transient_bool(u, name, &u->stop_when_unneeded, message, flags, error);
261420ba 2032
faa781cf
YW		 2033 if (streq(name, "RefuseManualStart"))
2034 return bus_set_transient_bool(u, name, &u->refuse_manual_start, message, flags, error);
261420ba 2035
faa781cf
YW		 2036 if (streq(name, "RefuseManualStop"))
2037 return bus_set_transient_bool(u, name, &u->refuse_manual_stop, message, flags, error);
c221420b 2038
faa781cf
YW		 2039 if (streq(name, "AllowIsolate"))
2040 return bus_set_transient_bool(u, name, &u->allow_isolate, message, flags, error);
5afe510c 2041
faa781cf
YW		 2042 if (streq(name, "DefaultDependencies"))
2043 return bus_set_transient_bool(u, name, &u->default_dependencies, message, flags, error);
2044
2045 if (streq(name, "OnFailureJobMode"))
2046 return bus_set_transient_job_mode(u, name, &u->on_failure_job_mode, message, flags, error);
2047
2048 if (streq(name, "IgnoreOnIsolate"))
2049 return bus_set_transient_bool(u, name, &u->ignore_on_isolate, message, flags, error);
2050
2051 if (streq(name, "JobTimeoutUSec")) {
2052 r = bus_set_transient_usec_fix_0(u, name, &u->job_timeout, message, flags, error);
2053 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags) && !u->job_running_timeout_set)
2054 u->job_running_timeout = u->job_timeout;
2055 }
2056
2057 if (streq(name, "JobRunningTimeoutUSec")) {
2058 r = bus_set_transient_usec_fix_0(u, name, &u->job_running_timeout, message, flags, error);
2059 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
2060 u->job_running_timeout_set = true;
2061
2062 return r;
2063 }
2064
2065 if (streq(name, "JobTimeoutAction"))
2066 return bus_set_transient_emergency_action(u, name, &u->job_timeout_action, message, flags, error);
2067
2068 if (streq(name, "JobTimeoutRebootArgument"))
2069 return bus_set_transient_string(u, name, &u->job_timeout_reboot_arg, message, flags, error);
2070
2071 if (streq(name, "StartLimitIntervalUSec"))
7bf081a1 2072 return bus_set_transient_usec(u, name, &u->start_ratelimit.interval, message, flags, error);
faa781cf
YW		 2073
2074 if (streq(name, "StartLimitBurst"))
7bf081a1 2075 return bus_set_transient_unsigned(u, name, &u->start_ratelimit.burst, message, flags, error);
faa781cf
YW		 2076
2077 if (streq(name, "StartLimitAction"))
2078 return bus_set_transient_emergency_action(u, name, &u->start_limit_action, message, flags, error);
2079
2080 if (streq(name, "FailureAction"))
2081 return bus_set_transient_emergency_action(u, name, &u->failure_action, message, flags, error);
2082
2083 if (streq(name, "SuccessAction"))
2084 return bus_set_transient_emergency_action(u, name, &u->success_action, message, flags, error);
2085
7af67e9a
LP		 2086 if (streq(name, "FailureActionExitStatus"))
2087 return bus_set_transient_exit_status(u, name, &u->failure_action_exit_status, message, flags, error);
2088
2089 if (streq(name, "SuccessActionExitStatus"))
2090 return bus_set_transient_exit_status(u, name, &u->success_action_exit_status, message, flags, error);
2091
faa781cf
YW		 2092 if (streq(name, "RebootArgument"))
2093 return bus_set_transient_string(u, name, &u->reboot_arg, message, flags, error);
2094
2095 if (streq(name, "CollectMode"))
2096 return bus_set_transient_collect_mode(u, name, &u->collect_mode, message, flags, error);
2097
2098 if (streq(name, "Conditions"))
2099 return bus_set_transient_conditions(u, name, &u->conditions, true, message, flags, error);
2100
2101 if (streq(name, "Asserts"))
2102 return bus_set_transient_conditions(u, name, &u->asserts, false, message, flags, error);
2103
2104 if (streq(name, "Documentation")) {
2105 _cleanup_strv_free_ char **l = NULL;
2106 char **p;
2107
2108 r = sd_bus_message_read_strv(message, &l);
5afe510c
LP		 2109 if (r < 0)
2110 return r;
2111
faa781cf
YW		 2112 STRV_FOREACH(p, l) {
2113 if (!documentation_url_is_valid(*p))
2114 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid URL in %s: %s", name, *p);
2115 }
5afe510c 2116
2e59b241 2117 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
faa781cf
YW		 2118 if (strv_isempty(l)) {
2119 u->documentation = strv_free(u->documentation);
2120 unit_write_settingf(u, flags, name, "%s=", name);
2121 } else {
2122 strv_extend_strv(&u->documentation, l, false);
2123
2124 STRV_FOREACH(p, l)
2125 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2126 }
5afe510c
LP		 2127 }
2128
2129 return 1;
2130
d79200e2
LP		 2131 } else if (streq(name, "Slice")) {
2132 Unit *slice;
c221420b 2133 const char *s;
c221420b 2134
d79200e2
LP		 2135 if (!UNIT_HAS_CGROUP_CONTEXT(u))
2136 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
2137 if (u->type == UNIT_SLICE)
2138 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
efdb0237
LP		 2139 if (unit_has_name(u, SPECIAL_INIT_SCOPE))
2140 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope");
d79200e2 2141
718db961
LP		 2142 r = sd_bus_message_read(message, "s", &s);
2143 if (r < 0)
2144 return r;
c221420b 2145
d79200e2
LP		 2146 if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
2147 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
2148
aea529e5
LP		 2149 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
2150 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
2151 * instead of manager_load_unit() on purpose, here. */
2152 r = manager_load_unit_prepare(u->manager, s, NULL, error, &slice);
d79200e2
LP		 2153 if (r < 0)
2154 return r;
c221420b 2155
d79200e2
LP		 2156 if (slice->type != UNIT_SLICE)
2157 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
b9316fb0 2158
2e59b241 2159 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
d79200e2 2160 r = unit_set_slice(u, slice);
8aec412f
LP		 2161 if (r < 0)
2162 return r;
c221420b 2163
2e59b241 2164 unit_write_settingf(u, flags|UNIT_PRIVATE, name, "Slice=%s", s);
8aec412f 2165 }
b9ec9359 2166
c221420b 2167 return 1;
d79200e2 2168
faa781cf
YW		 2169 } else if (streq(name, "RequiresMountsFor")) {
2170 _cleanup_strv_free_ char **l = NULL;
2171 char **p;
2172
2173 r = sd_bus_message_read_strv(message, &l);
2174 if (r < 0)
2175 return r;
2176
2177 STRV_FOREACH(p, l) {
b459700b
YW		 2178 path_simplify(*p, true);
2179
faa781cf
YW		 2180 if (!path_is_absolute(*p))
2181 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not absolute: %s", name, *p);
2182
b459700b
YW		 2183 if (!path_is_valid(*p))
2184 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s has invalid length: %s", name, *p);
2185
2186 if (!path_is_normalized(*p))
2187 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not normalized: %s", name, *p);
2188
faa781cf
YW		 2189 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
2190 r = unit_require_mounts_for(u, *p, UNIT_DEPENDENCY_FILE);
2191 if (r < 0)
2192 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to add required mount \"%s\": %m", *p);
7fb3ee51 2193
faa781cf
YW		 2194 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2195 }
f32b43bd 2196 }
7fb3ee51 2197
faa781cf
YW		 2198 return 1;
2199 }
2200
2201 if (streq(name, "RequiresOverridable"))
2202 d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */
2203 else if (streq(name, "RequisiteOverridable"))
2204 d = UNIT_REQUISITE; /* same here */
2205 else
2206 d = unit_dependency_from_string(name);
2207
2208 if (d >= 0) {
2209 const char *other;
2210
40430848
LP		 2211 if (!IN_SET(d,
2212 UNIT_REQUIRES,
2213 UNIT_REQUISITE,
2214 UNIT_WANTS,
2215 UNIT_BINDS_TO,
2216 UNIT_PART_OF,
2217 UNIT_CONFLICTS,
2218 UNIT_BEFORE,
2219 UNIT_AFTER,
2220 UNIT_ON_FAILURE,
2221 UNIT_PROPAGATES_RELOAD_TO,
2222 UNIT_RELOAD_PROPAGATED_FROM,
2223 UNIT_JOINS_NAMESPACE_OF))
2224 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Dependency type %s may not be created transiently.", unit_dependency_to_string(d));
2225
718db961
LP		 2226 r = sd_bus_message_enter_container(message, 'a', "s");
2227 if (r < 0)
2228 return r;
7fb3ee51 2229
718db961 2230 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
7410616c 2231 if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
718db961 2232 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
7fb3ee51 2233
2e59b241 2234 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
b9ec9359 2235 _cleanup_free_ char *label = NULL;
7fb3ee51 2236
35d8c19a 2237 r = unit_add_dependency_by_name(u, d, other, true, UNIT_DEPENDENCY_FILE);
7fb3ee51
LP		 2238 if (r < 0)
2239 return r;
2240
605405c6 2241 label = strjoin(name, "-", other);
7fb3ee51
LP		 2242 if (!label)
2243 return -ENOMEM;
2244
faa781cf 2245 unit_write_settingf(u, flags, label, "%s=%s", unit_dependency_to_string(d), other);
7fb3ee51
LP		 2246 }
2247
7fb3ee51 2248 }
718db961
LP		 2249 if (r < 0)
2250 return r;
7fb3ee51 2251
6ce270b1
LP		 2252 r = sd_bus_message_exit_container(message);
2253 if (r < 0)
2254 return r;
2255
7fb3ee51 2256 return 1;
05a98afd
LP		 2257
2258 } else if (streq(name, "AddRef")) {
2259
2260 int b;
2261
2262 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
2263 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
2264 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
2265 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
2266 * dependency type, hence let's not confuse things with that.
2267 *
5238e957 2268 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
05a98afd
LP		 2269 * the transient unit is complete, so that setting this property multiple times in the same transient
2270 * unit creation call doesn't count as individual references. */
2271
2272 r = sd_bus_message_read(message, "b", &b);
2273 if (r < 0)
2274 return r;
2275
2e59b241 2276 if (!UNIT_WRITE_FLAGS_NOOP(flags))
05a98afd
LP		 2277 u->bus_track_add = b;
2278
2279 return 1;
9f2e86af
LP		 2280 }
2281
2282 return 0;
2283}
2284
c2756a68
LP		 2285int bus_unit_set_properties(
2286 Unit *u,
718db961 2287 sd_bus_message *message,
2e59b241 2288 UnitWriteFlags flags,
c2756a68 2289 bool commit,
718db961 2290 sd_bus_error *error) {
c2756a68 2291
8e2af478 2292 bool for_real = false;
8e2af478
LP		 2293 unsigned n = 0;
2294 int r;
2295
2296 assert(u);
718db961 2297 assert(message);
8e2af478
LP		 2298
2299 /* We iterate through the array twice. First run we just check
2300 * if all passed data is valid, second run actually applies
2301 * it. This is to implement transaction-like behaviour without
2302 * actually providing full transactions. */
2303
718db961
LP		 2304 r = sd_bus_message_enter_container(message, 'a', "(sv)");
2305 if (r < 0)
2306 return r;
8e2af478 2307
8e2af478 2308 for (;;) {
8e2af478 2309 const char *name;
2e59b241 2310 UnitWriteFlags f;
8e2af478 2311
718db961
LP		 2312 r = sd_bus_message_enter_container(message, 'r', "sv");
2313 if (r < 0)
2314 return r;
2315 if (r == 0) {
2e59b241 2316 if (for_real || UNIT_WRITE_FLAGS_NOOP(flags))
8e2af478
LP		 2317 break;
2318
2319 /* Reached EOF. Let's try again, and this time for realz... */
718db961
LP		 2320 r = sd_bus_message_rewind(message, false);
2321 if (r < 0)
2322 return r;
6ce270b1 2323
8e2af478
LP		 2324 for_real = true;
2325 continue;
2326 }
2327
718db961
LP		 2328 r = sd_bus_message_read(message, "s", &name);
2329 if (r < 0)
2330 return r;
8e2af478 2331
718db961
LP		 2332 if (!UNIT_VTABLE(u)->bus_set_property)
2333 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
8e2af478 2334
718db961
LP		 2335 r = sd_bus_message_enter_container(message, 'v', NULL);
2336 if (r < 0)
2337 return r;
8e2af478 2338
2e59b241
LP		 2339 /* If not for real, then mask out the two target flags */
2340 f = for_real ? flags : (flags & ~(UNIT_RUNTIME|UNIT_PERSISTENT));
2341
2342 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, f, error);
9f2e86af 2343 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
2e59b241 2344 r = bus_unit_set_transient_property(u, name, message, f, error);
721060d4
LP		 2345 if (r == 0)
2346 r = bus_unit_set_live_property(u, name, message, f, error);
718db961
LP		 2347 if (r < 0)
2348 return r;
721060d4 2349
718db961
LP		 2350 if (r == 0)
2351 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
2352
2353 r = sd_bus_message_exit_container(message);
8e2af478
LP		 2354 if (r < 0)
2355 return r;
8e2af478 2356
718db961
LP		 2357 r = sd_bus_message_exit_container(message);
2358 if (r < 0)
2359 return r;
8e2af478
LP		 2360
2361 n += for_real;
2362 }
2363
6ce270b1
LP		 2364 r = sd_bus_message_exit_container(message);
2365 if (r < 0)
2366 return r;
2367
c2756a68 2368 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
8e2af478
LP		 2369 UNIT_VTABLE(u)->bus_commit_properties(u);
2370
241da328 2371 return n;
8e2af478 2372}
000a996d 2373
e49da001 2374int bus_unit_validate_load_state(Unit *u, sd_bus_error *error) {
6eb7c172 2375 assert(u);
000a996d 2376
e49da001 2377 /* Generates a pretty error if a unit isn't properly loaded. */
000a996d 2378
e49da001
LP		 2379 switch (u->load_state) {
2380
2381 case UNIT_LOADED:
2382 return 0;
000a996d 2383
e49da001 2384 case UNIT_NOT_FOUND:
b21d2f81 2385 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id);
000a996d 2386
c4555ad8
LP		 2387 case UNIT_BAD_SETTING:
2388 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING, "Unit %s has a bad unit file setting.", u->id);
2389
e49da001 2390 case UNIT_ERROR: /* Only show .load_error in UNIT_ERROR state */
06bed19e 2391 return sd_bus_error_set_errnof(error, u->load_error, "Unit %s failed to load properly: %m.", u->id);
e49da001
LP		 2392
2393 case UNIT_MASKED:
2394 return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id);
2395
2396 case UNIT_STUB:
2397 case UNIT_MERGED:
2398 default:
2399 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unexpected load state of unit %s", u->id);
2400 }
000a996d 2401}
05a98afd 2402
c5a97ed1 2403static int bus_unit_track_handler(sd_bus_track *t, void *userdata) {
05a98afd
LP		 2404 Unit *u = userdata;
2405
2406 assert(t);
2407 assert(u);
2408
2409 u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */
2410
e5c36295
LP		 2411 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2412 * let's see */
2413 unit_add_to_cgroup_empty_queue(u);
2414
2415 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
05a98afd 2416 unit_add_to_gc_queue(u);
e5c36295 2417
05a98afd
LP		 2418 return 0;
2419}
2420
c5a97ed1 2421static int bus_unit_allocate_bus_track(Unit *u) {
05a98afd
LP		 2422 int r;
2423
2424 assert(u);
2425
2426 if (u->bus_track)
2427 return 0;
2428
c5a97ed1 2429 r = sd_bus_track_new(u->manager->api_bus, &u->bus_track, bus_unit_track_handler, u);
05a98afd
LP		 2430 if (r < 0)
2431 return r;
2432
2433 r = sd_bus_track_set_recursive(u->bus_track, true);
2434 if (r < 0) {
2435 u->bus_track = sd_bus_track_unref(u->bus_track);
2436 return r;
2437 }
2438
2439 return 0;
2440}
2441
2442int bus_unit_track_add_name(Unit *u, const char *name) {
2443 int r;
2444
2445 assert(u);
2446
c5a97ed1 2447 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2448 if (r < 0)
2449 return r;
2450
2451 return sd_bus_track_add_name(u->bus_track, name);
2452}
2453
2454int bus_unit_track_add_sender(Unit *u, sd_bus_message *m) {
2455 int r;
2456
2457 assert(u);
2458
c5a97ed1 2459 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2460 if (r < 0)
2461 return r;
2462
2463 return sd_bus_track_add_sender(u->bus_track, m);
2464}
2465
2466int bus_unit_track_remove_sender(Unit *u, sd_bus_message *m) {
2467 assert(u);
2468
2469 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an
2470 * error */
2471 if (!u->bus_track)
2472 return -EUNATCH;
2473
2474 return sd_bus_track_remove_sender(u->bus_track, m);
2475}
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