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shared: split out polkit stuff from bus-util.c → bus-polkit.c
[thirdparty/systemd.git] / src / core / dbus-unit.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
a7334b09 2
718db961 3#include "sd-bus.h"
07630cea 4
b5efdb8a 5#include "alloc-util.h"
906c06f6 6#include "bpf-firewall.h"
07630cea 7#include "bus-common-errors.h"
269e4d2d 8#include "bus-polkit.h"
07630cea 9#include "cgroup-util.h"
faa781cf 10#include "condition.h"
c5a97ed1 11#include "dbus-job.h"
8752c575 12#include "dbus-unit.h"
faa781cf 13#include "dbus-util.h"
07630cea 14#include "dbus.h"
291d565a 15#include "fd-util.h"
5cfa33e0 16#include "install.h"
8752c575 17#include "locale-util.h"
ea430986 18#include "log.h"
faa781cf 19#include "path-util.h"
291d565a 20#include "process-util.h"
e2417e41 21#include "selinux-access.h"
6eb7c172 22#include "signal-util.h"
efdb0237 23#include "special.h"
83f18c91 24#include "string-table.h"
07630cea
LP		 25#include "string-util.h"
26#include "strv.h"
ee104e11 27#include "user-util.h"
faa781cf 28#include "web-util.h"
718db961 29
874bd264
YW		 30static bool unit_can_start_refuse_manual(Unit *u) {
31 return unit_can_start(u) && !u->refuse_manual_start;
32}
33
34static bool unit_can_stop_refuse_manual(Unit *u) {
35 return unit_can_stop(u) && !u->refuse_manual_stop;
36}
37
38static bool unit_can_isolate_refuse_manual(Unit *u) {
39 return unit_can_isolate(u) && !u->refuse_manual_start;
40}
41
5afe510c 42static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_collect_mode, collect_mode, CollectMode);
718db961 43static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_load_state, unit_load_state, UnitLoadState);
d420282b 44static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_job_mode, job_mode, JobMode);
87a47f99 45static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_emergency_action, emergency_action, EmergencyAction);
cb7f88fc
YW		 46static BUS_DEFINE_PROPERTY_GET(property_get_description, "s", Unit, unit_description);
47static BUS_DEFINE_PROPERTY_GET2(property_get_active_state, "s", Unit, unit_active_state, unit_active_state_to_string);
48static BUS_DEFINE_PROPERTY_GET(property_get_sub_state, "s", Unit, unit_sub_state_to_string);
49static BUS_DEFINE_PROPERTY_GET2(property_get_unit_file_state, "s", Unit, unit_get_unit_file_state, unit_file_state_to_string);
50static BUS_DEFINE_PROPERTY_GET(property_get_can_reload, "b", Unit, unit_can_reload);
874bd264
YW		 51static BUS_DEFINE_PROPERTY_GET(property_get_can_start, "b", Unit, unit_can_start_refuse_manual);
52static BUS_DEFINE_PROPERTY_GET(property_get_can_stop, "b", Unit, unit_can_stop_refuse_manual);
53static BUS_DEFINE_PROPERTY_GET(property_get_can_isolate, "b", Unit, unit_can_isolate_refuse_manual);
cb7f88fc 54static BUS_DEFINE_PROPERTY_GET(property_get_need_daemon_reload, "b", Unit, unit_need_daemon_reload);
92c23c5a 55static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_empty_strv, "as", 0);
718db961 56
4d3bac56
LP		 57static int property_get_can_clean(
58 sd_bus *bus,
59 const char *path,
60 const char *interface,
61 const char *property,
62 sd_bus_message *reply,
63 void *userdata,
64 sd_bus_error *error) {
65
66 Unit *u = userdata;
67 ExecCleanMask mask;
68 int r;
69
70 assert(bus);
71 assert(reply);
72
73 r = unit_can_clean(u, &mask);
74 if (r < 0)
75 return r;
76
77 r = sd_bus_message_open_container(reply, 'a', "s");
78 if (r < 0)
79 return r;
80
81 for (ExecDirectoryType t = 0; t < _EXEC_DIRECTORY_TYPE_MAX; t++) {
82 if (!FLAGS_SET(mask, 1U << t))
83 continue;
84
85 r = sd_bus_message_append(reply, "s", exec_resource_type_to_string(t));
86 if (r < 0)
87 return r;
88 }
89
90 return sd_bus_message_close_container(reply);
91}
92
718db961
LP		 93static int property_get_names(
94 sd_bus *bus,
95 const char *path,
96 const char *interface,
97 const char *property,
98 sd_bus_message *reply,
ebcf1f97
LP		 99 void *userdata,
100 sd_bus_error *error) {
718db961 101
14f7edb0 102 Set **s = userdata;
718db961
LP		 103 Iterator i;
104 const char *t;
105 int r;
ea430986 106
718db961
LP		 107 assert(bus);
108 assert(reply);
14f7edb0 109 assert(s);
4139c1b2 110
718db961
LP		 111 r = sd_bus_message_open_container(reply, 'a', "s");
112 if (r < 0)
113 return r;
4139c1b2 114
14f7edb0 115 SET_FOREACH(t, *s, i) {
718db961
LP		 116 r = sd_bus_message_append(reply, "s", t);
117 if (r < 0)
118 return r;
119 }
4139c1b2 120
718db961 121 return sd_bus_message_close_container(reply);
4139c1b2
LP		 122}
123
718db961
LP		 124static int property_get_following(
125 sd_bus *bus,
126 const char *path,
127 const char *interface,
128 const char *property,
129 sd_bus_message *reply,
ebcf1f97
LP		 130 void *userdata,
131 sd_bus_error *error) {
718db961
LP		 132
133 Unit *u = userdata, *f;
8fe914ec 134
718db961
LP		 135 assert(bus);
136 assert(reply);
8fe914ec
LP		 137 assert(u);
138
a7f241db 139 f = unit_following(u);
79a60375 140 return sd_bus_message_append(reply, "s", f ? f->id : NULL);
8fe914ec
LP		 141}
142
718db961
LP		 143static int property_get_dependencies(
144 sd_bus *bus,
145 const char *path,
146 const char *interface,
147 const char *property,
148 sd_bus_message *reply,
ebcf1f97
LP		 149 void *userdata,
150 sd_bus_error *error) {
4ec9a8a4 151
d1d85471 152 Hashmap **h = userdata;
5301be81 153 Iterator j;
718db961 154 Unit *u;
eef85c4a 155 void *v;
718db961 156 int r;
5301be81 157
718db961
LP		 158 assert(bus);
159 assert(reply);
d1d85471 160 assert(h);
5301be81 161
718db961
LP		 162 r = sd_bus_message_open_container(reply, 'a', "s");
163 if (r < 0)
164 return r;
5301be81 165
d1d85471 166 HASHMAP_FOREACH_KEY(v, u, *h, j) {
718db961
LP		 167 r = sd_bus_message_append(reply, "s", u->id);
168 if (r < 0)
169 return r;
170 }
5301be81 171
718db961 172 return sd_bus_message_close_container(reply);
5301be81
LP		 173}
174
99c14018
YW		 175static int property_get_requires_mounts_for(
176 sd_bus *bus,
177 const char *path,
178 const char *interface,
179 const char *property,
180 sd_bus_message *reply,
181 void *userdata,
182 sd_bus_error *error) {
183
d1d85471 184 Hashmap **h = userdata;
99c14018 185 const char *p;
f6e11b39 186 Iterator j;
99c14018
YW		 187 void *v;
188 int r;
189
190 assert(bus);
191 assert(reply);
d1d85471 192 assert(h);
99c14018
YW		 193
194 r = sd_bus_message_open_container(reply, 'a', "s");
195 if (r < 0)
196 return r;
197
d1d85471 198 HASHMAP_FOREACH_KEY(v, p, *h, j) {
99c14018
YW		 199 r = sd_bus_message_append(reply, "s", p);
200 if (r < 0)
201 return r;
202 }
203
204 return sd_bus_message_close_container(reply);
205}
206
d2dc52db
LP		 207static int property_get_unit_file_preset(
208 sd_bus *bus,
209 const char *path,
210 const char *interface,
211 const char *property,
212 sd_bus_message *reply,
213 void *userdata,
214 sd_bus_error *error) {
215
216 Unit *u = userdata;
217 int r;
218
219 assert(bus);
220 assert(reply);
221 assert(u);
222
223 r = unit_get_unit_file_preset(u);
224
225 return sd_bus_message_append(reply, "s",
79a60375 226 r < 0 ? NULL:
d2dc52db
LP		 227 r > 0 ? "enabled" : "disabled");
228}
229
718db961
LP		 230static int property_get_job(
231 sd_bus *bus,
232 const char *path,
233 const char *interface,
234 const char *property,
235 sd_bus_message *reply,
ebcf1f97
LP		 236 void *userdata,
237 sd_bus_error *error) {
718db961 238
f93891f3 239 _cleanup_free_ char *p = NULL;
14f7edb0 240 Job **j = userdata;
38131695 241
718db961
LP		 242 assert(bus);
243 assert(reply);
14f7edb0 244 assert(j);
38131695 245
14f7edb0 246 if (!*j)
718db961 247 return sd_bus_message_append(reply, "(uo)", 0, "/");
38131695 248
14f7edb0 249 p = job_dbus_path(*j);
718db961
LP		 250 if (!p)
251 return -ENOMEM;
38131695 252
14f7edb0 253 return sd_bus_message_append(reply, "(uo)", (*j)->id, p);
718db961 254}
38131695 255
718db961
LP		 256static int property_get_conditions(
257 sd_bus *bus,
258 const char *path,
259 const char *interface,
260 const char *property,
261 sd_bus_message *reply,
ebcf1f97
LP		 262 void *userdata,
263 sd_bus_error *error) {
45fb0699 264
59fccdc5
LP		 265 const char *(*to_string)(ConditionType type) = NULL;
266 Condition **list = userdata, *c;
718db961 267 int r;
45fb0699 268
718db961
LP		 269 assert(bus);
270 assert(reply);
59fccdc5
LP		 271 assert(list);
272
273 to_string = streq(property, "Asserts") ? assert_type_to_string : condition_type_to_string;
45fb0699 274
718db961
LP		 275 r = sd_bus_message_open_container(reply, 'a', "(sbbsi)");
276 if (r < 0)
277 return r;
45fb0699 278
59fccdc5 279 LIST_FOREACH(conditions, c, *list) {
cc50ef13
LP		 280 int tristate;
281
282 tristate =
283 c->result == CONDITION_UNTESTED ? 0 :
284 c->result == CONDITION_SUCCEEDED ? 1 : -1;
285
2c7e050f 286 r = sd_bus_message_append(reply, "(sbbsi)",
59fccdc5 287 to_string(c->type),
2c7e050f 288 c->trigger, c->negate,
cc50ef13 289 c->parameter, tristate);
718db961
LP		 290 if (r < 0)
291 return r;
45fb0699 292
718db961 293 }
52990c2e 294
718db961 295 return sd_bus_message_close_container(reply);
52990c2e
ZJS		 296}
297
718db961
LP		 298static int property_get_load_error(
299 sd_bus *bus,
300 const char *path,
301 const char *interface,
302 const char *property,
303 sd_bus_message *reply,
ebcf1f97
LP		 304 void *userdata,
305 sd_bus_error *error) {
52990c2e 306
4afd3348 307 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
fd1e3fd8
LP		 308 Unit *u = userdata;
309 int r;
52990c2e 310
718db961
LP		 311 assert(bus);
312 assert(reply);
fd1e3fd8 313 assert(u);
52990c2e 314
fd1e3fd8
LP		 315 r = bus_unit_validate_load_state(u, &e);
316 if (r < 0)
317 return sd_bus_message_append(reply, "(ss)", e.name, e.message);
52990c2e 318
fd1e3fd8 319 return sd_bus_message_append(reply, "(ss)", NULL, NULL);
52990c2e
ZJS		 320}
321
88ced61b
MC		 322static int bus_verify_manage_units_async_full(
323 Unit *u,
324 const char *verb,
325 int capability,
326 const char *polkit_message,
05a98afd 327 bool interactive,
88ced61b
MC		 328 sd_bus_message *call,
329 sd_bus_error *error) {
330
331 const char *details[9] = {
332 "unit", u->id,
333 "verb", verb,
334 };
335
336 if (polkit_message) {
337 details[4] = "polkit.message";
338 details[5] = polkit_message;
339 details[6] = "polkit.gettext_domain";
340 details[7] = GETTEXT_PACKAGE;
341 }
342
05a98afd
LP		 343 return bus_verify_polkit_async(
344 call,
345 capability,
346 "org.freedesktop.systemd1.manage-units",
347 details,
348 interactive,
349 UID_INVALID,
350 &u->manager->polkit_registry,
351 error);
88ced61b
MC		 352}
353
50cbaba4
LP		 354static const char *const polkit_message_for_job[_JOB_TYPE_MAX] = {
355 [JOB_START] = N_("Authentication is required to start '$(unit)'."),
356 [JOB_STOP] = N_("Authentication is required to stop '$(unit)'."),
357 [JOB_RELOAD] = N_("Authentication is required to reload '$(unit)'."),
358 [JOB_RESTART] = N_("Authentication is required to restart '$(unit)'."),
359 [JOB_TRY_RESTART] = N_("Authentication is required to restart '$(unit)'."),
360};
361
1d22e906 362int bus_unit_method_start_generic(
1d22e906
LP		 363 sd_bus_message *message,
364 Unit *u,
365 JobType job_type,
366 bool reload_if_possible,
367 sd_bus_error *error) {
368
e59ba56d 369 const char *smode, *verb;
718db961
LP		 370 JobMode mode;
371 int r;
9f39404c 372
718db961 373 assert(message);
9f39404c 374 assert(u);
718db961 375 assert(job_type >= 0 && job_type < _JOB_TYPE_MAX);
9f39404c 376
61ea63f1
EV		 377 r = mac_selinux_unit_access_check(
378 u, message,
94bd7323
EV		 379 job_type_to_access_method(job_type),
380 error);
1d22e906
LP		 381 if (r < 0)
382 return r;
383
718db961
LP		 384 r = sd_bus_message_read(message, "s", &smode);
385 if (r < 0)
ebcf1f97 386 return r;
9f39404c 387
718db961
LP		 388 mode = job_mode_from_string(smode);
389 if (mode < 0)
ebcf1f97 390 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
9f39404c 391
88ced61b 392 if (reload_if_possible)
e59ba56d 393 verb = strjoina("reload-or-", job_type_to_string(job_type));
88ced61b 394 else
e59ba56d 395 verb = job_type_to_string(job_type);
88ced61b
MC		 396
397 r = bus_verify_manage_units_async_full(
398 u,
399 verb,
400 CAP_SYS_ADMIN,
ebfb1b57 401 polkit_message_for_job[job_type],
05a98afd 402 true,
88ced61b
MC		 403 message,
404 error);
1d22e906
LP		 405 if (r < 0)
406 return r;
407 if (r == 0)
408 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
409
50cbaba4
LP		 410 return bus_unit_queue_job(message, u, job_type, mode,
411 reload_if_possible ? BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE : 0, error);
9f39404c
LP		 412}
413
19070062
LP		 414static int method_start(sd_bus_message *message, void *userdata, sd_bus_error *error) {
415 return bus_unit_method_start_generic(message, userdata, JOB_START, false, error);
718db961 416}
b548631a 417
19070062
LP		 418static int method_stop(sd_bus_message *message, void *userdata, sd_bus_error *error) {
419 return bus_unit_method_start_generic(message, userdata, JOB_STOP, false, error);
718db961
LP		 420}
421
19070062
LP		 422static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
423 return bus_unit_method_start_generic(message, userdata, JOB_RELOAD, false, error);
718db961 424}
0a524ba7 425
19070062
LP		 426static int method_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
427 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, false, error);
718db961 428}
8a0867d6 429
19070062
LP		 430static int method_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
431 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, false, error);
718db961 432}
cad45ba1 433
19070062
LP		 434static int method_reload_or_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
435 return bus_unit_method_start_generic(message, userdata, JOB_RESTART, true, error);
718db961 436}
8a0867d6 437
19070062
LP		 438static int method_reload_or_try_restart(sd_bus_message *message, void *userdata, sd_bus_error *error) {
439 return bus_unit_method_start_generic(message, userdata, JOB_TRY_RESTART, true, error);
718db961 440}
8a0867d6 441
50cbaba4
LP		 442int bus_unit_method_enqueue_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
443 BusUnitQueueFlags flags = BUS_UNIT_QUEUE_VERBOSE_REPLY;
444 const char *jtype, *smode;
445 Unit *u = userdata;
446 JobType type;
447 JobMode mode;
448 int r;
449
450 assert(message);
451 assert(u);
452
453 r = sd_bus_message_read(message, "ss", &jtype, &smode);
454 if (r < 0)
455 return r;
456
457 /* Parse the two magic reload types "reload-or-…" manually */
458 if (streq(jtype, "reload-or-restart")) {
459 type = JOB_RESTART;
460 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
461 } else if (streq(jtype, "reload-or-try-restart")) {
462 type = JOB_TRY_RESTART;
463 flags |= BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE;
464 } else {
465 /* And the rest generically */
466 type = job_type_from_string(jtype);
467 if (type < 0)
468 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job type %s invalid", jtype);
469 }
470
471 mode = job_mode_from_string(smode);
472 if (mode < 0)
473 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s invalid", smode);
474
475 r = mac_selinux_unit_access_check(
476 u, message,
477 job_type_to_access_method(type),
478 error);
479 if (r < 0)
480 return r;
481
482 r = bus_verify_manage_units_async_full(
483 u,
484 jtype,
485 CAP_SYS_ADMIN,
486 polkit_message_for_job[type],
487 true,
488 message,
489 error);
490 if (r < 0)
491 return r;
492 if (r == 0)
493 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
494
495 return bus_unit_queue_job(message, u, type, mode, flags, error);
496}
497
19070062 498int bus_unit_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 499 Unit *u = userdata;
500 const char *swho;
501 int32_t signo;
502 KillWho who;
503 int r;
5632e374 504
718db961
LP		 505 assert(message);
506 assert(u);
cad45ba1 507
1d22e906 508 r = mac_selinux_unit_access_check(u, message, "stop", error);
283868e1
SW		 509 if (r < 0)
510 return r;
283868e1 511
718db961
LP		 512 r = sd_bus_message_read(message, "si", &swho, &signo);
513 if (r < 0)
ebcf1f97 514 return r;
718db961
LP		 515
516 if (isempty(swho))
517 who = KILL_ALL;
518 else {
519 who = kill_who_from_string(swho);
520 if (who < 0)
ebcf1f97 521 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid who argument %s", swho);
718db961 522 }
5632e374 523
6eb7c172 524 if (!SIGNAL_VALID(signo))
ebcf1f97 525 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal number out of range.");
8e2af478 526
88ced61b
MC		 527 r = bus_verify_manage_units_async_full(
528 u,
529 "kill",
530 CAP_KILL,
1d445eda 531 N_("Authentication is required to send a UNIX signal to the processes of '$(unit)'."),
05a98afd 532 true,
88ced61b
MC		 533 message,
534 error);
ebcf1f97
LP		 535 if (r < 0)
536 return r;
1d22e906
LP		 537 if (r == 0)
538 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
8e2af478 539
ebcf1f97 540 r = unit_kill(u, who, signo, error);
718db961 541 if (r < 0)
ebcf1f97 542 return r;
8e2af478 543
df2d202e 544 return sd_bus_reply_method_return(message, NULL);
718db961 545}
8e2af478 546
19070062 547int bus_unit_method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961 548 Unit *u = userdata;
ebcf1f97 549 int r;
b548631a 550
718db961
LP		 551 assert(message);
552 assert(u);
b548631a 553
1d22e906 554 r = mac_selinux_unit_access_check(u, message, "reload", error);
283868e1
SW		 555 if (r < 0)
556 return r;
283868e1 557
88ced61b
MC		 558 r = bus_verify_manage_units_async_full(
559 u,
560 "reset-failed",
561 CAP_SYS_ADMIN,
562 N_("Authentication is required to reset the \"failed\" state of '$(unit)'."),
05a98afd 563 true,
88ced61b
MC		 564 message,
565 error);
ebcf1f97
LP		 566 if (r < 0)
567 return r;
1d22e906
LP		 568 if (r == 0)
569 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
b548631a 570
718db961 571 unit_reset_failed(u);
b548631a 572
df2d202e 573 return sd_bus_reply_method_return(message, NULL);
ea430986
LP		 574}
575
19070062 576int bus_unit_method_set_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
718db961
LP		 577 Unit *u = userdata;
578 int runtime, r;
ea430986 579
ea430986 580 assert(message);
718db961 581 assert(u);
80fbf05e 582
1d22e906 583 r = mac_selinux_unit_access_check(u, message, "start", error);
283868e1
SW		 584 if (r < 0)
585 return r;
283868e1 586
718db961
LP		 587 r = sd_bus_message_read(message, "b", &runtime);
588 if (r < 0)
ebcf1f97 589 return r;
2cccbca4 590
88ced61b
MC		 591 r = bus_verify_manage_units_async_full(
592 u,
593 "set-property",
594 CAP_SYS_ADMIN,
595 N_("Authentication is required to set properties on '$(unit)'."),
05a98afd 596 true,
88ced61b
MC		 597 message,
598 error);
ebcf1f97
LP		 599 if (r < 0)
600 return r;
1d22e906
LP		 601 if (r == 0)
602 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
cad45ba1 603
ebcf1f97 604 r = bus_unit_set_properties(u, message, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, error);
718db961 605 if (r < 0)
ebcf1f97 606 return r;
2cccbca4 607
df2d202e 608 return sd_bus_reply_method_return(message, NULL);
718db961 609}
2cccbca4 610
05a98afd
LP		 611int bus_unit_method_ref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
612 Unit *u = userdata;
613 int r;
614
615 assert(message);
616 assert(u);
617
618 r = mac_selinux_unit_access_check(u, message, "start", error);
619 if (r < 0)
620 return r;
621
622 r = bus_verify_manage_units_async_full(
623 u,
624 "ref",
625 CAP_SYS_ADMIN,
626 NULL,
627 false,
628 message,
629 error);
630 if (r < 0)
631 return r;
632 if (r == 0)
633 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
634
635 r = bus_unit_track_add_sender(u, message);
636 if (r < 0)
637 return r;
638
639 return sd_bus_reply_method_return(message, NULL);
640}
641
642int bus_unit_method_unref(sd_bus_message *message, void *userdata, sd_bus_error *error) {
643 Unit *u = userdata;
644 int r;
645
646 assert(message);
647 assert(u);
648
649 r = bus_unit_track_remove_sender(u, message);
650 if (r == -EUNATCH)
651 return sd_bus_error_setf(error, BUS_ERROR_NOT_REFERENCED, "Unit has not been referenced yet.");
652 if (r < 0)
653 return r;
654
655 return sd_bus_reply_method_return(message, NULL);
656}
657
4d3bac56
LP		 658int bus_unit_method_clean(sd_bus_message *message, void *userdata, sd_bus_error *error) {
659 ExecCleanMask mask = 0;
660 Unit *u = userdata;
661 int r;
662
663 assert(message);
664 assert(u);
665
666 r = mac_selinux_unit_access_check(u, message, "stop", error);
667 if (r < 0)
668 return r;
669
670 r = sd_bus_message_enter_container(message, 'a', "s");
671 if (r < 0)
672 return r;
673
674 for (;;) {
675 const char *i;
676
677 r = sd_bus_message_read(message, "s", &i);
678 if (r < 0)
679 return r;
680 if (r == 0)
681 break;
682
683 if (streq(i, "all"))
684 mask |= EXEC_CLEAN_ALL;
685 else {
686 ExecDirectoryType t;
687
688 t = exec_resource_type_from_string(i);
689 if (t < 0)
690 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid resource type: %s", i);
691
692 mask |= 1U << t;
693 }
694 }
695
696 r = sd_bus_message_exit_container(message);
697 if (r < 0)
698 return r;
699
700 r = bus_verify_manage_units_async_full(
701 u,
702 "clean",
703 CAP_DAC_OVERRIDE,
704 N_("Authentication is required to delete files and directories associated with '$(unit)'."),
705 true,
706 message,
707 error);
708 if (r < 0)
709 return r;
710 if (r == 0)
711 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
712
713 r = unit_clean(u, mask);
714 if (r == -EOPNOTSUPP)
715 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Unit '%s' does not supporting cleaning.", u->id);
716 if (r == -EUNATCH)
717 return sd_bus_error_setf(error, BUS_ERROR_NOTHING_TO_CLEAN, "No matching resources found.");
718 if (r == -EBUSY)
719 return sd_bus_error_setf(error, BUS_ERROR_UNIT_BUSY, "Unit is not inactive or has pending job.");
720 if (r < 0)
721 return r;
722
723 return sd_bus_reply_method_return(message, NULL);
724}
725
bedea99d
LP		 726static int property_get_refs(
727 sd_bus *bus,
728 const char *path,
729 const char *interface,
730 const char *property,
731 sd_bus_message *reply,
732 void *userdata,
733 sd_bus_error *error) {
734
735 Unit *u = userdata;
736 const char *i;
737 int r;
738
739 assert(bus);
740 assert(reply);
741
742 r = sd_bus_message_open_container(reply, 'a', "s");
743 if (r < 0)
744 return r;
745
746 for (i = sd_bus_track_first(u->bus_track); i; i = sd_bus_track_next(u->bus_track)) {
747 int c, k;
748
749 c = sd_bus_track_count_name(u->bus_track, i);
750 if (c < 0)
751 return c;
752
753 /* Add the item multiple times if the ref count for each is above 1 */
754 for (k = 0; k < c; k++) {
755 r = sd_bus_message_append(reply, "s", i);
756 if (r < 0)
757 return r;
758 }
759 }
760
761 return sd_bus_message_close_container(reply);
762}
763
718db961
LP		 764const sd_bus_vtable bus_unit_vtable[] = {
765 SD_BUS_VTABLE_START(0),
766
556089dc 767 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Unit, id), SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 768 SD_BUS_PROPERTY("Names", "as", property_get_names, offsetof(Unit, names), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 769 SD_BUS_PROPERTY("Following", "s", property_get_following, 0, 0),
556089dc 770 SD_BUS_PROPERTY("Requires", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRES]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 771 SD_BUS_PROPERTY("Requisite", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 772 SD_BUS_PROPERTY("Wants", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTS]), SD_BUS_VTABLE_PROPERTY_CONST),
773 SD_BUS_PROPERTY("BindsTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BINDS_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
774 SD_BUS_PROPERTY("PartOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PART_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
775 SD_BUS_PROPERTY("RequiredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
be7d9ff7 776 SD_BUS_PROPERTY("RequisiteOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_REQUISITE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 777 SD_BUS_PROPERTY("WantedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_WANTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
778 SD_BUS_PROPERTY("BoundBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BOUND_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
779 SD_BUS_PROPERTY("ConsistsOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
780 SD_BUS_PROPERTY("Conflicts", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTS]), SD_BUS_VTABLE_PROPERTY_CONST),
781 SD_BUS_PROPERTY("ConflictedBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
782 SD_BUS_PROPERTY("Before", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_BEFORE]), SD_BUS_VTABLE_PROPERTY_CONST),
783 SD_BUS_PROPERTY("After", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_AFTER]), SD_BUS_VTABLE_PROPERTY_CONST),
784 SD_BUS_PROPERTY("OnFailure", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_ON_FAILURE]), SD_BUS_VTABLE_PROPERTY_CONST),
785 SD_BUS_PROPERTY("Triggers", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERS]), SD_BUS_VTABLE_PROPERTY_CONST),
786 SD_BUS_PROPERTY("TriggeredBy", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), SD_BUS_VTABLE_PROPERTY_CONST),
787 SD_BUS_PROPERTY("PropagatesReloadTo", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), SD_BUS_VTABLE_PROPERTY_CONST),
788 SD_BUS_PROPERTY("ReloadPropagatedFrom", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), SD_BUS_VTABLE_PROPERTY_CONST),
789 SD_BUS_PROPERTY("JoinsNamespaceOf", "as", property_get_dependencies, offsetof(Unit, dependencies[UNIT_JOINS_NAMESPACE_OF]), SD_BUS_VTABLE_PROPERTY_CONST),
99c14018 790 SD_BUS_PROPERTY("RequiresMountsFor", "as", property_get_requires_mounts_for, offsetof(Unit, requires_mounts_for), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 791 SD_BUS_PROPERTY("Documentation", "as", NULL, offsetof(Unit, documentation), SD_BUS_VTABLE_PROPERTY_CONST),
792 SD_BUS_PROPERTY("Description", "s", property_get_description, 0, SD_BUS_VTABLE_PROPERTY_CONST),
793 SD_BUS_PROPERTY("LoadState", "s", property_get_load_state, offsetof(Unit, load_state), SD_BUS_VTABLE_PROPERTY_CONST),
718db961
LP		 794 SD_BUS_PROPERTY("ActiveState", "s", property_get_active_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
795 SD_BUS_PROPERTY("SubState", "s", property_get_sub_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 796 SD_BUS_PROPERTY("FragmentPath", "s", NULL, offsetof(Unit, fragment_path), SD_BUS_VTABLE_PROPERTY_CONST),
797 SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Unit, source_path), SD_BUS_VTABLE_PROPERTY_CONST),
798 SD_BUS_PROPERTY("DropInPaths", "as", NULL, offsetof(Unit, dropin_paths), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 799 SD_BUS_PROPERTY("UnitFileState", "s", property_get_unit_file_state, 0, 0),
d2dc52db 800 SD_BUS_PROPERTY("UnitFilePreset", "s", property_get_unit_file_preset, 0, 0),
a483fb59 801 BUS_PROPERTY_DUAL_TIMESTAMP("StateChangeTimestamp", offsetof(Unit, state_change_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961
LP		 802 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveExitTimestamp", offsetof(Unit, inactive_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
803 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveEnterTimestamp", offsetof(Unit, active_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
804 BUS_PROPERTY_DUAL_TIMESTAMP("ActiveExitTimestamp", offsetof(Unit, active_exit_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
805 BUS_PROPERTY_DUAL_TIMESTAMP("InactiveEnterTimestamp", offsetof(Unit, inactive_enter_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 806 SD_BUS_PROPERTY("CanStart", "b", property_get_can_start, 0, SD_BUS_VTABLE_PROPERTY_CONST),
807 SD_BUS_PROPERTY("CanStop", "b", property_get_can_stop, 0, SD_BUS_VTABLE_PROPERTY_CONST),
808 SD_BUS_PROPERTY("CanReload", "b", property_get_can_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
809 SD_BUS_PROPERTY("CanIsolate", "b", property_get_can_isolate, 0, SD_BUS_VTABLE_PROPERTY_CONST),
4d3bac56 810 SD_BUS_PROPERTY("CanClean", "as", property_get_can_clean, 0, SD_BUS_VTABLE_PROPERTY_CONST),
14f7edb0 811 SD_BUS_PROPERTY("Job", "(uo)", property_get_job, offsetof(Unit, job), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
556089dc
LP		 812 SD_BUS_PROPERTY("StopWhenUnneeded", "b", bus_property_get_bool, offsetof(Unit, stop_when_unneeded), SD_BUS_VTABLE_PROPERTY_CONST),
813 SD_BUS_PROPERTY("RefuseManualStart", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_start), SD_BUS_VTABLE_PROPERTY_CONST),
814 SD_BUS_PROPERTY("RefuseManualStop", "b", bus_property_get_bool, offsetof(Unit, refuse_manual_stop), SD_BUS_VTABLE_PROPERTY_CONST),
815 SD_BUS_PROPERTY("AllowIsolate", "b", bus_property_get_bool, offsetof(Unit, allow_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
816 SD_BUS_PROPERTY("DefaultDependencies", "b", bus_property_get_bool, offsetof(Unit, default_dependencies), SD_BUS_VTABLE_PROPERTY_CONST),
817 SD_BUS_PROPERTY("OnFailureJobMode", "s", property_get_job_mode, offsetof(Unit, on_failure_job_mode), SD_BUS_VTABLE_PROPERTY_CONST),
818 SD_BUS_PROPERTY("IgnoreOnIsolate", "b", bus_property_get_bool, offsetof(Unit, ignore_on_isolate), SD_BUS_VTABLE_PROPERTY_CONST),
556089dc
LP		 819 SD_BUS_PROPERTY("NeedDaemonReload", "b", property_get_need_daemon_reload, 0, SD_BUS_VTABLE_PROPERTY_CONST),
820 SD_BUS_PROPERTY("JobTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
a2df3ea4 821 SD_BUS_PROPERTY("JobRunningTimeoutUSec", "t", bus_property_get_usec, offsetof(Unit, job_running_timeout), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 822 SD_BUS_PROPERTY("JobTimeoutAction", "s", property_get_emergency_action, offsetof(Unit, job_timeout_action), SD_BUS_VTABLE_PROPERTY_CONST),
f189ab18 823 SD_BUS_PROPERTY("JobTimeoutRebootArgument", "s", NULL, offsetof(Unit, job_timeout_reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
718db961 824 SD_BUS_PROPERTY("ConditionResult", "b", bus_property_get_bool, offsetof(Unit, condition_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 825 SD_BUS_PROPERTY("AssertResult", "b", bus_property_get_bool, offsetof(Unit, assert_result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
718db961 826 BUS_PROPERTY_DUAL_TIMESTAMP("ConditionTimestamp", offsetof(Unit, condition_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
59fccdc5 827 BUS_PROPERTY_DUAL_TIMESTAMP("AssertTimestamp", offsetof(Unit, assert_timestamp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
e18f8852
LP		 828 SD_BUS_PROPERTY("Conditions", "a(sbbsi)", property_get_conditions, offsetof(Unit, conditions), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
829 SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
fd1e3fd8 830 SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
556089dc 831 SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
f5869324 832 SD_BUS_PROPERTY("Perpetual", "b", bus_property_get_bool, offsetof(Unit, perpetual), SD_BUS_VTABLE_PROPERTY_CONST),
7bf081a1
ZJS		 833 SD_BUS_PROPERTY("StartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
834 SD_BUS_PROPERTY("StartLimitBurst", "u", bus_property_get_unsigned, offsetof(Unit, start_ratelimit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
87a47f99 835 SD_BUS_PROPERTY("StartLimitAction", "s", property_get_emergency_action, offsetof(Unit, start_limit_action), SD_BUS_VTABLE_PROPERTY_CONST),
53c35a76 836 SD_BUS_PROPERTY("FailureAction", "s", property_get_emergency_action, offsetof(Unit, failure_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 837 SD_BUS_PROPERTY("FailureActionExitStatus", "i", bus_property_get_int, offsetof(Unit, failure_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
e7dfbb4e 838 SD_BUS_PROPERTY("SuccessAction", "s", property_get_emergency_action, offsetof(Unit, success_action), SD_BUS_VTABLE_PROPERTY_CONST),
7af67e9a 839 SD_BUS_PROPERTY("SuccessActionExitStatus", "i", bus_property_get_int, offsetof(Unit, success_action_exit_status), SD_BUS_VTABLE_PROPERTY_CONST),
6bf0f408 840 SD_BUS_PROPERTY("RebootArgument", "s", NULL, offsetof(Unit, reboot_arg), SD_BUS_VTABLE_PROPERTY_CONST),
af92c603 841 SD_BUS_PROPERTY("InvocationID", "ay", bus_property_get_id128, offsetof(Unit, invocation_id), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
641e0d7a 842 SD_BUS_PROPERTY("CollectMode", "s", property_get_collect_mode, offsetof(Unit, collect_mode), SD_BUS_VTABLE_PROPERTY_CONST),
bedea99d 843 SD_BUS_PROPERTY("Refs", "as", property_get_refs, 0, 0),
718db961 844
1d22e906
LP		 845 SD_BUS_METHOD("Start", "s", "o", method_start, SD_BUS_VTABLE_UNPRIVILEGED),
846 SD_BUS_METHOD("Stop", "s", "o", method_stop, SD_BUS_VTABLE_UNPRIVILEGED),
847 SD_BUS_METHOD("Reload", "s", "o", method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
848 SD_BUS_METHOD("Restart", "s", "o", method_restart, SD_BUS_VTABLE_UNPRIVILEGED),
849 SD_BUS_METHOD("TryRestart", "s", "o", method_try_restart, SD_BUS_VTABLE_UNPRIVILEGED),
850 SD_BUS_METHOD("ReloadOrRestart", "s", "o", method_reload_or_restart, SD_BUS_VTABLE_UNPRIVILEGED),
851 SD_BUS_METHOD("ReloadOrTryRestart", "s", "o", method_reload_or_try_restart, SD_BUS_VTABLE_UNPRIVILEGED),
50cbaba4 852 SD_BUS_METHOD("EnqueueJob", "ss", "uososa(uosos)", bus_unit_method_enqueue_job, SD_BUS_VTABLE_UNPRIVILEGED),
1d22e906
LP		 853 SD_BUS_METHOD("Kill", "si", NULL, bus_unit_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
854 SD_BUS_METHOD("ResetFailed", NULL, NULL, bus_unit_method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
855 SD_BUS_METHOD("SetProperties", "ba(sv)", NULL, bus_unit_method_set_properties, SD_BUS_VTABLE_UNPRIVILEGED),
05a98afd
LP		 856 SD_BUS_METHOD("Ref", NULL, NULL, bus_unit_method_ref, SD_BUS_VTABLE_UNPRIVILEGED),
857 SD_BUS_METHOD("Unref", NULL, NULL, bus_unit_method_unref, SD_BUS_VTABLE_UNPRIVILEGED),
4d3bac56 858 SD_BUS_METHOD("Clean", "as", NULL, bus_unit_method_clean, SD_BUS_VTABLE_UNPRIVILEGED),
718db961 859
92c23c5a
YW		 860 /* For dependency types we don't support anymore always return an empty array */
861 SD_BUS_PROPERTY("RequiresOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
862 SD_BUS_PROPERTY("RequisiteOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
863 SD_BUS_PROPERTY("RequiredByOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
864 SD_BUS_PROPERTY("RequisiteOfOverridable", "as", property_get_empty_strv, 0, SD_BUS_VTABLE_HIDDEN),
865 /* Obsolete alias names */
7bf081a1
ZJS		 866 SD_BUS_PROPERTY("StartLimitInterval", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
867 SD_BUS_PROPERTY("StartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Unit, start_ratelimit.interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
718db961
LP		 868 SD_BUS_VTABLE_END
869};
2cccbca4 870
718db961
LP		 871static int property_get_slice(
872 sd_bus *bus,
873 const char *path,
874 const char *interface,
875 const char *property,
876 sd_bus_message *reply,
ebcf1f97
LP		 877 void *userdata,
878 sd_bus_error *error) {
2cccbca4 879
718db961 880 Unit *u = userdata;
2cccbca4 881
718db961
LP		 882 assert(bus);
883 assert(reply);
884 assert(u);
2cccbca4 885
718db961
LP		 886 return sd_bus_message_append(reply, "s", unit_slice_name(u));
887}
2cccbca4 888
934277fe
LP		 889static int property_get_current_memory(
890 sd_bus *bus,
891 const char *path,
892 const char *interface,
893 const char *property,
894 sd_bus_message *reply,
895 void *userdata,
896 sd_bus_error *error) {
897
934277fe 898 uint64_t sz = (uint64_t) -1;
5ad096b3 899 Unit *u = userdata;
934277fe
LP		 900 int r;
901
902 assert(bus);
903 assert(reply);
904 assert(u);
905
5ad096b3
LP		 906 r = unit_get_memory_current(u, &sz);
907 if (r < 0 && r != -ENODATA)
f2341e0a 908 log_unit_warning_errno(u, r, "Failed to get memory.usage_in_bytes attribute: %m");
934277fe 909
5ad096b3
LP		 910 return sd_bus_message_append(reply, "t", sz);
911}
934277fe 912
03a7b521
LP		 913static int property_get_current_tasks(
914 sd_bus *bus,
915 const char *path,
916 const char *interface,
917 const char *property,
918 sd_bus_message *reply,
919 void *userdata,
920 sd_bus_error *error) {
921
922 uint64_t cn = (uint64_t) -1;
923 Unit *u = userdata;
924 int r;
925
926 assert(bus);
927 assert(reply);
928 assert(u);
929
930 r = unit_get_tasks_current(u, &cn);
931 if (r < 0 && r != -ENODATA)
932 log_unit_warning_errno(u, r, "Failed to get pids.current attribute: %m");
933
934 return sd_bus_message_append(reply, "t", cn);
935}
936
5ad096b3
LP		 937static int property_get_cpu_usage(
938 sd_bus *bus,
939 const char *path,
940 const char *interface,
941 const char *property,
942 sd_bus_message *reply,
943 void *userdata,
944 sd_bus_error *error) {
934277fe 945
5ad096b3
LP		 946 nsec_t ns = (nsec_t) -1;
947 Unit *u = userdata;
948 int r;
949
950 assert(bus);
951 assert(reply);
952 assert(u);
953
954 r = unit_get_cpu_usage(u, &ns);
955 if (r < 0 && r != -ENODATA)
f2341e0a 956 log_unit_warning_errno(u, r, "Failed to get cpuacct.usage attribute: %m");
5ad096b3
LP		 957
958 return sd_bus_message_append(reply, "t", ns);
934277fe
LP		 959}
960
047f5d63
PH		 961static int property_get_cpuset_cpus(
962 sd_bus *bus,
963 const char *path,
964 const char *interface,
965 const char *property,
966 sd_bus_message *reply,
967 void *userdata,
968 sd_bus_error *error) {
969
970 Unit *u = userdata;
971 _cleanup_(cpu_set_reset) CPUSet cpus = {};
972 _cleanup_free_ uint8_t *array = NULL;
973 size_t allocated;
974
975 assert(bus);
976 assert(reply);
977 assert(u);
978
979 (void) unit_get_cpuset(u, &cpus, "cpuset.cpus.effective");
980 (void) cpu_set_to_dbus(&cpus, &array, &allocated);
981 return sd_bus_message_append_array(reply, 'y', array, allocated);
982}
983
984static int property_get_cpuset_mems(
985 sd_bus *bus,
986 const char *path,
987 const char *interface,
988 const char *property,
989 sd_bus_message *reply,
990 void *userdata,
991 sd_bus_error *error) {
992
993 Unit *u = userdata;
994 _cleanup_(cpu_set_reset) CPUSet mems = {};
995 _cleanup_free_ uint8_t *array = NULL;
996 size_t allocated;
997
998 assert(bus);
999 assert(reply);
1000 assert(u);
1001
1002 (void) unit_get_cpuset(u, &mems, "cpuset.mems.effective");
1003 (void) cpu_set_to_dbus(&mems, &array, &allocated);
1004 return sd_bus_message_append_array(reply, 'y', array, allocated);
1005}
1006
98bac605
LP		 1007static int property_get_cgroup(
1008 sd_bus *bus,
1009 const char *path,
1010 const char *interface,
1011 const char *property,
1012 sd_bus_message *reply,
1013 void *userdata,
1014 sd_bus_error *error) {
1015
1016 Unit *u = userdata;
79a60375 1017 const char *t = NULL;
98bac605
LP		 1018
1019 assert(bus);
1020 assert(reply);
1021 assert(u);
1022
1023 /* Three cases: a) u->cgroup_path is NULL, in which case the
1024 * unit has no control group, which we report as the empty
1025 * string. b) u->cgroup_path is the empty string, which
1026 * indicates the root cgroup, which we report as "/". c) all
1027 * other cases we report as-is. */
1028
1029 if (u->cgroup_path)
945403e6 1030 t = empty_to_root(u->cgroup_path);
98bac605
LP		 1031
1032 return sd_bus_message_append(reply, "s", t);
1033}
1034
291d565a
LP		 1035static int append_process(sd_bus_message *reply, const char *p, pid_t pid, Set *pids) {
1036 _cleanup_free_ char *buf = NULL, *cmdline = NULL;
1037 int r;
1038
1039 assert(reply);
1040 assert(pid > 0);
1041
1042 r = set_put(pids, PID_TO_PTR(pid));
4c701096 1043 if (IN_SET(r, 0, -EEXIST))
291d565a
LP		 1044 return 0;
1045 if (r < 0)
1046 return r;
1047
1048 if (!p) {
1049 r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &buf);
1050 if (r == -ESRCH)
1051 return 0;
1052 if (r < 0)
1053 return r;
1054
1055 p = buf;
1056 }
1057
09c1dcee 1058 (void) get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &cmdline);
291d565a
LP		 1059
1060 return sd_bus_message_append(reply,
1061 "(sus)",
1062 p,
1063 (uint32_t) pid,
1064 cmdline);
1065}
1066
1067static int append_cgroup(sd_bus_message *reply, const char *p, Set *pids) {
1068 _cleanup_closedir_ DIR *d = NULL;
1069 _cleanup_fclose_ FILE *f = NULL;
1070 int r;
1071
1072 assert(reply);
1073 assert(p);
1074
1075 r = cg_enumerate_processes(SYSTEMD_CGROUP_CONTROLLER, p, &f);
24715314 1076 if (r == -ENOENT)
291d565a
LP		 1077 return 0;
1078 if (r < 0)
1079 return r;
1080
1081 for (;;) {
1082 pid_t pid;
1083
1084 r = cg_read_pid(f, &pid);
1085 if (r < 0)
1086 return r;
1087 if (r == 0)
1088 break;
1089
1090 if (is_kernel_thread(pid) > 0)
1091 continue;
1092
1093 r = append_process(reply, p, pid, pids);
1094 if (r < 0)
1095 return r;
1096 }
1097
1098 r = cg_enumerate_subgroups(SYSTEMD_CGROUP_CONTROLLER, p, &d);
1099 if (r == -ENOENT)
1100 return 0;
1101 if (r < 0)
1102 return r;
1103
1104 for (;;) {
1105 _cleanup_free_ char *g = NULL, *j = NULL;
1106
1107 r = cg_read_subgroup(d, &g);
1108 if (r < 0)
1109 return r;
1110 if (r == 0)
1111 break;
1112
624e4fcf 1113 j = path_join(empty_to_root(p), g);
291d565a
LP		 1114 if (!j)
1115 return -ENOMEM;
1116
1117 r = append_cgroup(reply, j, pids);
1118 if (r < 0)
1119 return r;
1120 }
1121
1122 return 0;
1123}
1124
1125int bus_unit_method_get_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1126 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
af4fa99d 1127 _cleanup_set_free_ Set *pids = NULL;
291d565a
LP		 1128 Unit *u = userdata;
1129 pid_t pid;
1130 int r;
1131
1132 assert(message);
1133
807fa5d9
LP		 1134 r = mac_selinux_unit_access_check(u, message, "status", error);
1135 if (r < 0)
1136 return r;
1137
291d565a
LP		 1138 pids = set_new(NULL);
1139 if (!pids)
1140 return -ENOMEM;
1141
1142 r = sd_bus_message_new_method_return(message, &reply);
1143 if (r < 0)
1144 return r;
1145
1146 r = sd_bus_message_open_container(reply, 'a', "(sus)");
1147 if (r < 0)
1148 return r;
1149
1150 if (u->cgroup_path) {
1151 r = append_cgroup(reply, u->cgroup_path, pids);
1152 if (r < 0)
1153 return r;
1154 }
1155
1156 /* The main and control pids might live outside of the cgroup, hence fetch them separately */
1157 pid = unit_main_pid(u);
1158 if (pid > 0) {
1159 r = append_process(reply, NULL, pid, pids);
1160 if (r < 0)
1161 return r;
1162 }
1163
1164 pid = unit_control_pid(u);
1165 if (pid > 0) {
1166 r = append_process(reply, NULL, pid, pids);
1167 if (r < 0)
1168 return r;
1169 }
1170
1171 r = sd_bus_message_close_container(reply);
1172 if (r < 0)
1173 return r;
1174
1175 return sd_bus_send(NULL, reply, NULL);
1176}
1177
906c06f6
DM		 1178static int property_get_ip_counter(
1179 sd_bus *bus,
1180 const char *path,
1181 const char *interface,
1182 const char *property,
1183 sd_bus_message *reply,
1184 void *userdata,
1185 sd_bus_error *error) {
1186
83f18c91
LP		 1187 static const char *const table[_CGROUP_IP_ACCOUNTING_METRIC_MAX] = {
1188 [CGROUP_IP_INGRESS_BYTES] = "IPIngressBytes",
1189 [CGROUP_IP_EGRESS_BYTES] = "IPEgressBytes",
1190 [CGROUP_IP_INGRESS_PACKETS] = "IPIngressPackets",
1191 [CGROUP_IP_EGRESS_PACKETS] = "IPEgressPackets",
1192 };
1193
1194 uint64_t value = UINT64_MAX;
906c06f6 1195 Unit *u = userdata;
83f18c91 1196 ssize_t metric;
906c06f6
DM		 1197
1198 assert(bus);
1199 assert(reply);
1200 assert(property);
1201 assert(u);
1202
83f18c91 1203 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
906c06f6
DM		 1204 (void) unit_get_ip_accounting(u, metric, &value);
1205 return sd_bus_message_append(reply, "t", value);
1206}
1207
fbe14fc9
LP		 1208static int property_get_io_counter(
1209 sd_bus *bus,
1210 const char *path,
1211 const char *interface,
1212 const char *property,
1213 sd_bus_message *reply,
1214 void *userdata,
1215 sd_bus_error *error) {
1216
1217 static const char *const table[_CGROUP_IO_ACCOUNTING_METRIC_MAX] = {
1218 [CGROUP_IO_READ_BYTES] = "IOReadBytes",
1219 [CGROUP_IO_WRITE_BYTES] = "IOWriteBytes",
1220 [CGROUP_IO_READ_OPERATIONS] = "IOReadOperations",
1221 [CGROUP_IO_WRITE_OPERATIONS] = "IOWriteOperations",
1222 };
1223
1224 uint64_t value = UINT64_MAX;
1225 Unit *u = userdata;
1226 ssize_t metric;
1227
1228 assert(bus);
1229 assert(reply);
1230 assert(property);
1231 assert(u);
1232
1233 assert_se((metric = string_table_lookup(table, ELEMENTSOF(table), property)) >= 0);
1234 (void) unit_get_io_accounting(u, metric, false, &value);
1235 return sd_bus_message_append(reply, "t", value);
1236}
1237
6592b975
LP		 1238int bus_unit_method_attach_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1239
1240 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
af4fa99d 1241 _cleanup_set_free_ Set *pids = NULL;
6592b975
LP		 1242 Unit *u = userdata;
1243 const char *path;
1244 int r;
1245
1246 assert(message);
1247
1248 /* This migrates the processes with the specified PIDs into the cgroup of this unit, optionally below a
1249 * specified cgroup path. Obviously this only works for units that actually maintain a cgroup
1250 * representation. If a process is already in the cgroup no operation is executed – in this case the specified
1251 * subcgroup path has no effect! */
1252
1253 r = mac_selinux_unit_access_check(u, message, "start", error);
1254 if (r < 0)
1255 return r;
1256
1257 r = sd_bus_message_read(message, "s", &path);
1258 if (r < 0)
1259 return r;
1260
1261 path = empty_to_null(path);
1262 if (path) {
1263 if (!path_is_absolute(path))
1264 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not absolute: %s", path);
1265
1266 if (!path_is_normalized(path))
1267 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Control group path is not normalized: %s", path);
1268 }
1269
1270 if (!unit_cgroup_delegate(u))
1271 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Process migration not available on non-delegated units.");
1272
1273 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)))
1274 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit is not active, refusing.");
1275
1276 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
1277 if (r < 0)
1278 return r;
1279
1280 r = sd_bus_message_enter_container(message, 'a', "u");
1281 if (r < 0)
1282 return r;
1283 for (;;) {
1284 uid_t process_uid, sender_uid;
1285 uint32_t upid;
1286 pid_t pid;
1287
1288 r = sd_bus_message_read(message, "u", &upid);
1289 if (r < 0)
1290 return r;
1291 if (r == 0)
1292 break;
1293
1294 if (upid == 0) {
1295 r = sd_bus_creds_get_pid(creds, &pid);
1296 if (r < 0)
1297 return r;
1298 } else
1299 pid = (uid_t) upid;
1300
1301 /* Filter out duplicates */
1302 if (set_contains(pids, PID_TO_PTR(pid)))
1303 continue;
1304
1305 /* Check if this process is suitable for attaching to this unit */
1306 r = unit_pid_attachable(u, pid, error);
1307 if (r < 0)
1308 return r;
1309
1310 /* Let's query the sender's UID, so that we can make our security decisions */
1311 r = sd_bus_creds_get_euid(creds, &sender_uid);
1312 if (r < 0)
1313 return r;
1314
874b5ad2 1315 /* Let's validate security: if the sender is root, then all is OK. If the sender is any other unit,
6592b975
LP		 1316 * then the process' UID and the target unit's UID have to match the sender's UID */
1317 if (sender_uid != 0 && sender_uid != getuid()) {
1318 r = get_process_uid(pid, &process_uid);
1319 if (r < 0)
1320 return sd_bus_error_set_errnof(error, r, "Failed to retrieve process UID: %m");
1321
1322 if (process_uid != sender_uid)
1323 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by client's UID. Refusing.", pid);
1324 if (process_uid != u->ref_uid)
1325 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Process " PID_FMT " not owned by target unit's UID. Refusing.", pid);
1326 }
1327
1328 if (!pids) {
1329 pids = set_new(NULL);
1330 if (!pids)
1331 return -ENOMEM;
1332 }
1333
1334 r = set_put(pids, PID_TO_PTR(pid));
1335 if (r < 0)
1336 return r;
1337 }
1338
1339 r = sd_bus_message_exit_container(message);
1340 if (r < 0)
1341 return r;
1342
1343 r = unit_attach_pids_to_cgroup(u, pids, path);
1344 if (r < 0)
1345 return sd_bus_error_set_errnof(error, r, "Failed to attach processes to control group: %m");
1346
1347 return sd_bus_reply_method_return(message, NULL);
1348}
1349
718db961
LP		 1350const sd_bus_vtable bus_unit_cgroup_vtable[] = {
1351 SD_BUS_VTABLE_START(0),
1352 SD_BUS_PROPERTY("Slice", "s", property_get_slice, 0, 0),
98bac605 1353 SD_BUS_PROPERTY("ControlGroup", "s", property_get_cgroup, 0, 0),
934277fe 1354 SD_BUS_PROPERTY("MemoryCurrent", "t", property_get_current_memory, 0, 0),
5ad096b3 1355 SD_BUS_PROPERTY("CPUUsageNSec", "t", property_get_cpu_usage, 0, 0),
047f5d63
PH		 1356 SD_BUS_PROPERTY("EffectiveCPUs", "ay", property_get_cpuset_cpus, 0, 0),
1357 SD_BUS_PROPERTY("EffectiveMemoryNodes", "ay", property_get_cpuset_mems, 0, 0),
03a7b521 1358 SD_BUS_PROPERTY("TasksCurrent", "t", property_get_current_tasks, 0, 0),
906c06f6
DM		 1359 SD_BUS_PROPERTY("IPIngressBytes", "t", property_get_ip_counter, 0, 0),
1360 SD_BUS_PROPERTY("IPIngressPackets", "t", property_get_ip_counter, 0, 0),
1361 SD_BUS_PROPERTY("IPEgressBytes", "t", property_get_ip_counter, 0, 0),
1362 SD_BUS_PROPERTY("IPEgressPackets", "t", property_get_ip_counter, 0, 0),
fbe14fc9
LP		 1363 SD_BUS_PROPERTY("IOReadBytes", "t", property_get_io_counter, 0, 0),
1364 SD_BUS_PROPERTY("IOReadOperations", "t", property_get_io_counter, 0, 0),
1365 SD_BUS_PROPERTY("IOWriteBytes", "t", property_get_io_counter, 0, 0),
1366 SD_BUS_PROPERTY("IOWriteOperations", "t", property_get_io_counter, 0, 0),
291d565a 1367 SD_BUS_METHOD("GetProcesses", NULL, "a(sus)", bus_unit_method_get_processes, SD_BUS_VTABLE_UNPRIVILEGED),
6592b975 1368 SD_BUS_METHOD("AttachProcesses", "sau", NULL, bus_unit_method_attach_processes, SD_BUS_VTABLE_UNPRIVILEGED),
718db961
LP		 1369 SD_BUS_VTABLE_END
1370};
2cccbca4 1371
8f8f05a9 1372static int send_new_signal(sd_bus *bus, void *userdata) {
4afd3348 1373 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1374 _cleanup_free_ char *p = NULL;
1375 Unit *u = userdata;
1376 int r;
2cccbca4 1377
718db961
LP		 1378 assert(bus);
1379 assert(u);
2cccbca4 1380
718db961 1381 p = unit_dbus_path(u);
e861098b 1382 if (!p)
718db961 1383 return -ENOMEM;
2cccbca4 1384
718db961
LP		 1385 r = sd_bus_message_new_signal(
1386 bus,
151b9b96 1387 &m,
718db961
LP		 1388 "/org/freedesktop/systemd1",
1389 "org.freedesktop.systemd1.Manager",
151b9b96 1390 "UnitNew");
718db961
LP		 1391 if (r < 0)
1392 return r;
2cccbca4 1393
718db961
LP		 1394 r = sd_bus_message_append(m, "so", u->id, p);
1395 if (r < 0)
1396 return r;
2cccbca4 1397
8f8f05a9 1398 return sd_bus_send(bus, m, NULL);
718db961 1399}
2cccbca4 1400
8f8f05a9 1401static int send_changed_signal(sd_bus *bus, void *userdata) {
718db961
LP		 1402 _cleanup_free_ char *p = NULL;
1403 Unit *u = userdata;
1404 int r;
2cccbca4 1405
718db961
LP		 1406 assert(bus);
1407 assert(u);
2cccbca4 1408
718db961 1409 p = unit_dbus_path(u);
9ceefc81 1410 if (!p)
718db961 1411 return -ENOMEM;
2cccbca4 1412
718db961
LP		 1413 /* Send a properties changed signal. First for the specific
1414 * type, then for the generic unit. The clients may rely on
1415 * this order to get atomic behavior if needed. */
ea430986 1416
aec8de63
LP		 1417 r = sd_bus_emit_properties_changed_strv(
1418 bus, p,
21b735e7 1419 unit_dbus_interface_from_type(u->type),
aec8de63 1420 NULL);
fe7f06f1 1421 if (r < 0)
aec8de63 1422 return r;
80fbf05e 1423
fe7f06f1 1424 return sd_bus_emit_properties_changed_strv(
718db961
LP		 1425 bus, p,
1426 "org.freedesktop.systemd1.Unit",
718db961 1427 NULL);
ea430986
LP		 1428}
1429
c1e1601e 1430void bus_unit_send_change_signal(Unit *u) {
b170dd80 1431 int r;
c1e1601e 1432 assert(u);
c1e1601e 1433
ac155bb8 1434 if (u->in_dbus_queue) {
71fda00f 1435 LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);
ac155bb8 1436 u->in_dbus_queue = false;
c0bd0cf7 1437 }
c1e1601e 1438
ac155bb8 1439 if (!u->id)
04ade7d2
LP		 1440 return;
1441
ae572acd 1442 r = bus_foreach_bus(u->manager, u->bus_track, u->sent_dbus_new_signal ? send_changed_signal : send_new_signal, u);
718db961 1443 if (r < 0)
f2341e0a 1444 log_unit_debug_errno(u, r, "Failed to send unit change signal for %s: %m", u->id);
c1e1601e 1445
718db961
LP		 1446 u->sent_dbus_new_signal = true;
1447}
c4e2ceae 1448
6fcbec6f
LP		 1449void bus_unit_send_pending_change_signal(Unit *u, bool including_new) {
1450
1451 /* Sends out any pending change signals, but only if they really are pending. This call is used when we are
1452 * about to change state in order to force out a PropertiesChanged signal beforehand if there was one pending
1453 * so that clients can follow the full state transition */
1454
1455 if (!u->in_dbus_queue) /* If not enqueued, don't bother */
1456 return;
1457
1458 if (!u->sent_dbus_new_signal && !including_new) /* If the unit was never announced, don't bother, it's fine if
1459 * the unit appears in the new state right-away (except if the
1460 * caller explicitly asked us to send it anyway) */
1461 return;
1462
1463 if (MANAGER_IS_RELOADING(u->manager)) /* Don't generate unnecessary PropertiesChanged signals for the same unit
1464 * when we are reloading. */
1465 return;
1466
1467 bus_unit_send_change_signal(u);
1468}
1469
8f8f05a9 1470static int send_removed_signal(sd_bus *bus, void *userdata) {
4afd3348 1471 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
718db961
LP		 1472 _cleanup_free_ char *p = NULL;
1473 Unit *u = userdata;
1474 int r;
c4e2ceae 1475
718db961
LP		 1476 assert(bus);
1477 assert(u);
c1e1601e 1478
718db961 1479 p = unit_dbus_path(u);
e861098b 1480 if (!p)
718db961 1481 return -ENOMEM;
c1e1601e 1482
718db961
LP		 1483 r = sd_bus_message_new_signal(
1484 bus,
151b9b96 1485 &m,
718db961
LP		 1486 "/org/freedesktop/systemd1",
1487 "org.freedesktop.systemd1.Manager",
151b9b96 1488 "UnitRemoved");
718db961
LP		 1489 if (r < 0)
1490 return r;
c1e1601e 1491
718db961
LP		 1492 r = sd_bus_message_append(m, "so", u->id, p);
1493 if (r < 0)
1494 return r;
c1e1601e 1495
8f8f05a9 1496 return sd_bus_send(bus, m, NULL);
c1e1601e
LP		 1497}
1498
1499void bus_unit_send_removed_signal(Unit *u) {
718db961 1500 int r;
c1e1601e
LP		 1501 assert(u);
1502
0dd99f86 1503 if (!u->sent_dbus_new_signal || u->in_dbus_queue)
7535cc78
LP		 1504 bus_unit_send_change_signal(u);
1505
ac155bb8 1506 if (!u->id)
04ade7d2
LP		 1507 return;
1508
ae572acd 1509 r = bus_foreach_bus(u->manager, u->bus_track, send_removed_signal, u);
718db961 1510 if (r < 0)
f2341e0a 1511 log_unit_debug_errno(u, r, "Failed to send unit remove signal for %s: %m", u->id);
c1e1601e 1512}
e2110e5d 1513
718db961 1514int bus_unit_queue_job(
718db961 1515 sd_bus_message *message,
cad45ba1
LP		 1516 Unit *u,
1517 JobType type,
1518 JobMode mode,
50cbaba4 1519 BusUnitQueueFlags flags,
ebcf1f97 1520 sd_bus_error *error) {
cad45ba1 1521
50cbaba4
LP		 1522 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1523 _cleanup_free_ char *job_path = NULL, *unit_path = NULL;
1524 _cleanup_(set_freep) Set *affected = NULL;
1525 Iterator i;
1526 Job *j, *a;
cad45ba1
LP		 1527 int r;
1528
cad45ba1
LP		 1529 assert(message);
1530 assert(u);
1531 assert(type >= 0 && type < _JOB_TYPE_MAX);
1532 assert(mode >= 0 && mode < _JOB_MODE_MAX);
1533
f596e00f
EV		 1534 r = mac_selinux_unit_access_check(
1535 u, message,
1536 job_type_to_access_method(type),
1537 error);
1538 if (r < 0)
1539 return r;
1540
50cbaba4 1541 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_RELOAD_IF_POSSIBLE) && unit_can_reload(u)) {
cad45ba1
LP		 1542 if (type == JOB_RESTART)
1543 type = JOB_RELOAD_OR_START;
1544 else if (type == JOB_TRY_RESTART)
3282591d 1545 type = JOB_TRY_RELOAD;
cad45ba1
LP		 1546 }
1547
718db961 1548 if (type == JOB_STOP &&
c4555ad8 1549 IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_ERROR, UNIT_BAD_SETTING) &&
718db961 1550 unit_active_state(u) == UNIT_INACTIVE)
ebcf1f97 1551 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
cad45ba1
LP		 1552
1553 if ((type == JOB_START && u->refuse_manual_start) ||
1554 (type == JOB_STOP && u->refuse_manual_stop) ||
3742095b 1555 (IN_SET(type, JOB_RESTART, JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop)) ||
efb30ba1 1556 (type == JOB_RELOAD_OR_START && job_type_collapse(type, u) == JOB_START && u->refuse_manual_start))
7e974e85 1557 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 1558
50cbaba4
LP		 1559 if (FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY)) {
1560 affected = set_new(NULL);
1561 if (!affected)
1562 return -ENOMEM;
1563 }
1564
1565 r = manager_add_job(u->manager, type, u, mode, affected, error, &j);
cad45ba1 1566 if (r < 0)
ebcf1f97 1567 return r;
cad45ba1 1568
c5a97ed1
LP		 1569 r = bus_job_track_sender(j, message);
1570 if (r < 0)
1571 return r;
cad45ba1 1572
13142276
LP		 1573 /* Before we send the method reply, force out the announcement JobNew for this job */
1574 bus_job_send_pending_change_signal(j, true);
1575
50cbaba4
LP		 1576 job_path = job_dbus_path(j);
1577 if (!job_path)
1578 return -ENOMEM;
1579
1580 /* The classic response is just a job object path */
1581 if (!FLAGS_SET(flags, BUS_UNIT_QUEUE_VERBOSE_REPLY))
1582 return sd_bus_reply_method_return(message, "o", job_path);
1583
1584 /* In verbose mode respond with the anchor job plus everything that has been affected */
1585 r = sd_bus_message_new_method_return(message, &reply);
1586 if (r < 0)
1587 return r;
1588
1589 unit_path = unit_dbus_path(j->unit);
1590 if (!unit_path)
1591 return -ENOMEM;
1592
1593 r = sd_bus_message_append(reply, "uosos",
1594 j->id, job_path,
1595 j->unit->id, unit_path,
1596 job_type_to_string(j->type));
1597 if (r < 0)
1598 return r;
1599
1600 r = sd_bus_message_open_container(reply, 'a', "(uosos)");
1601 if (r < 0)
1602 return r;
1603
1604 SET_FOREACH(a, affected, i) {
1605
1606 if (a->id == j->id)
1607 continue;
1608
1609 /* Free paths from previous iteration */
1610 job_path = mfree(job_path);
1611 unit_path = mfree(unit_path);
1612
1613 job_path = job_dbus_path(a);
1614 if (!job_path)
1615 return -ENOMEM;
1616
1617 unit_path = unit_dbus_path(a->unit);
1618 if (!unit_path)
1619 return -ENOMEM;
1620
1621 r = sd_bus_message_append(reply, "(uosos)",
1622 a->id, job_path,
1623 a->unit->id, unit_path,
1624 job_type_to_string(a->type));
1625 if (r < 0)
1626 return r;
1627 }
1628
1629 r = sd_bus_message_close_container(reply);
1630 if (r < 0)
1631 return r;
1632
1633 return sd_bus_send(NULL, reply, NULL);
cad45ba1
LP		 1634}
1635
721060d4 1636static int bus_unit_set_live_property(
9f2e86af
LP		 1637 Unit *u,
1638 const char *name,
718db961 1639 sd_bus_message *message,
2e59b241 1640 UnitWriteFlags flags,
718db961 1641 sd_bus_error *error) {
9f2e86af
LP		 1642
1643 int r;
1644
1645 assert(u);
1646 assert(name);
718db961 1647 assert(message);
9f2e86af 1648
721060d4
LP		 1649 /* Handles setting properties both "live" (i.e. at any time during runtime), and during creation (for transient
1650 * units that are being created). */
1651
9f2e86af 1652 if (streq(name, "Description")) {
718db961 1653 const char *d;
9f2e86af 1654
718db961
LP		 1655 r = sd_bus_message_read(message, "s", &d);
1656 if (r < 0)
1657 return r;
8aec412f 1658
2e59b241 1659 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
718db961 1660 r = unit_set_description(u, d);
8aec412f
LP		 1661 if (r < 0)
1662 return r;
b9316fb0 1663
2e59b241 1664 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Description=%s", d);
8aec412f 1665 }
9f2e86af
LP		 1666
1667 return 1;
721060d4
LP		 1668 }
1669
1670 return 0;
1671}
1672
54fcb619
ZJS		 1673static int bus_set_transient_emergency_action(
1674 Unit *u,
1675 const char *name,
1676 EmergencyAction *p,
1677 sd_bus_message *message,
1678 UnitWriteFlags flags,
1679 sd_bus_error *error) {
1680
1681 const char *s;
1682 EmergencyAction v;
1683 int r;
1684 bool system;
1685
1686 assert(p);
1687
1688 r = sd_bus_message_read(message, "s", &s);
1689 if (r < 0)
1690 return r;
1691
1692 system = MANAGER_IS_SYSTEM(u->manager);
1693 r = parse_emergency_action(s, system, &v);
db2df550 1694 if (r < 0)
54fcb619 1695 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
119f0f28 1696 r == -EOPNOTSUPP ? "%s setting invalid for manager type: %s"
54fcb619
ZJS		 1697 : "Invalid %s setting: %s",
1698 name, s);
1699
1700 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1701 *p = v;
1702 unit_write_settingf(u, flags, name,
1703 "%s=%s", name, s);
1704 }
1705
1706 return 1;
1707}
1708
7af67e9a
LP		 1709static int bus_set_transient_exit_status(
1710 Unit *u,
1711 const char *name,
1712 int *p,
1713 sd_bus_message *message,
1714 UnitWriteFlags flags,
1715 sd_bus_error *error) {
1716
1717 int32_t k;
1718 int r;
1719
1720 assert(p);
1721
1722 r = sd_bus_message_read(message, "i", &k);
1723 if (r < 0)
1724 return r;
1725
1726 if (k > 255)
1727 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Exit status must be in range 0…255 or negative.");
1728
1729 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1730 *p = k < 0 ? -1 : k;
1731
1732 if (k < 0)
1733 unit_write_settingf(u, flags, name, "%s=", name);
1734 else
1735 unit_write_settingf(u, flags, name, "%s=%i", name, k);
1736 }
1737
1738 return 1;
1739}
1740
faa781cf 1741static BUS_DEFINE_SET_TRANSIENT_PARSE(collect_mode, CollectMode, collect_mode_from_string);
faa781cf
YW		 1742static BUS_DEFINE_SET_TRANSIENT_PARSE(job_mode, JobMode, job_mode_from_string);
1743
1744static int bus_set_transient_conditions(
1745 Unit *u,
1746 const char *name,
1747 Condition **list,
1748 bool is_condition,
1749 sd_bus_message *message,
1750 UnitWriteFlags flags,
1751 sd_bus_error *error) {
1752
1753 const char *type_name, *param;
1754 int trigger, negate, r;
1755 bool empty = true;
1756
1757 assert(list);
1758
1759 r = sd_bus_message_enter_container(message, 'a', "(sbbs)");
1760 if (r < 0)
1761 return r;
1762
1763 while ((r = sd_bus_message_read(message, "(sbbs)", &type_name, &trigger, &negate, &param)) > 0) {
1764 ConditionType t;
1765
1766 t = is_condition ? condition_type_from_string(type_name) : assert_type_from_string(type_name);
1767 if (t < 0)
1768 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid condition type: %s", type_name);
1769
1770 if (t != CONDITION_NULL) {
1771 if (isempty(param))
1772 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Condition parameter in %s is empty", type_name);
1773
1774 if (condition_takes_path(t) && !path_is_absolute(param))
1775 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in condition %s is not absolute: %s", type_name, param);
1776 } else
1777 param = NULL;
1778
1779 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1780 Condition *c;
1781
1782 c = condition_new(t, param, trigger, negate);
1783 if (!c)
1784 return -ENOMEM;
1785
1786 LIST_PREPEND(conditions, *list, c);
1787
1788 if (t != CONDITION_NULL)
1789 unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name,
1790 "%s=%s%s%s", type_name,
1791 trigger ? "|" : "", negate ? "!" : "", param);
1792 else
1793 unit_write_settingf(u, flags, name,
1794 "%s=%s%s", type_name,
1795 trigger ? "|" : "", yes_no(!negate));
1796 }
1797
1798 empty = false;
1799 }
1800 if (r < 0)
1801 return r;
1802
1803 r = sd_bus_message_exit_container(message);
1804 if (r < 0)
1805 return r;
1806
1807 if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
1808 *list = condition_free_list(*list);
1809 unit_write_settingf(u, flags, name, "%sNull=", is_condition ? "Condition" : "Assert");
1810 }
1811
1812 return 1;
1813}
1814
721060d4
LP		 1815static int bus_unit_set_transient_property(
1816 Unit *u,
1817 const char *name,
1818 sd_bus_message *message,
1819 UnitWriteFlags flags,
1820 sd_bus_error *error) {
1821
faa781cf 1822 UnitDependency d = _UNIT_DEPENDENCY_INVALID;
721060d4 1823 int r;
261420ba 1824
721060d4
LP		 1825 assert(u);
1826 assert(name);
1827 assert(message);
1828
1829 /* Handles settings when transient units are created. This settings cannot be altered anymore after the unit
1830 * has been created. */
1831
faa781cf
YW		 1832 if (streq(name, "SourcePath"))
1833 return bus_set_transient_path(u, name, &u->source_path, message, flags, error);
261420ba 1834
faa781cf
YW		 1835 if (streq(name, "StopWhenUnneeded"))
1836 return bus_set_transient_bool(u, name, &u->stop_when_unneeded, message, flags, error);
261420ba 1837
faa781cf
YW		 1838 if (streq(name, "RefuseManualStart"))
1839 return bus_set_transient_bool(u, name, &u->refuse_manual_start, message, flags, error);
261420ba 1840
faa781cf
YW		 1841 if (streq(name, "RefuseManualStop"))
1842 return bus_set_transient_bool(u, name, &u->refuse_manual_stop, message, flags, error);
c221420b 1843
faa781cf
YW		 1844 if (streq(name, "AllowIsolate"))
1845 return bus_set_transient_bool(u, name, &u->allow_isolate, message, flags, error);
5afe510c 1846
faa781cf
YW		 1847 if (streq(name, "DefaultDependencies"))
1848 return bus_set_transient_bool(u, name, &u->default_dependencies, message, flags, error);
1849
1850 if (streq(name, "OnFailureJobMode"))
1851 return bus_set_transient_job_mode(u, name, &u->on_failure_job_mode, message, flags, error);
1852
1853 if (streq(name, "IgnoreOnIsolate"))
1854 return bus_set_transient_bool(u, name, &u->ignore_on_isolate, message, flags, error);
1855
1856 if (streq(name, "JobTimeoutUSec")) {
1857 r = bus_set_transient_usec_fix_0(u, name, &u->job_timeout, message, flags, error);
1858 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags) && !u->job_running_timeout_set)
1859 u->job_running_timeout = u->job_timeout;
1860 }
1861
1862 if (streq(name, "JobRunningTimeoutUSec")) {
1863 r = bus_set_transient_usec_fix_0(u, name, &u->job_running_timeout, message, flags, error);
1864 if (r >= 0 && !UNIT_WRITE_FLAGS_NOOP(flags))
1865 u->job_running_timeout_set = true;
1866
1867 return r;
1868 }
1869
1870 if (streq(name, "JobTimeoutAction"))
1871 return bus_set_transient_emergency_action(u, name, &u->job_timeout_action, message, flags, error);
1872
1873 if (streq(name, "JobTimeoutRebootArgument"))
1874 return bus_set_transient_string(u, name, &u->job_timeout_reboot_arg, message, flags, error);
1875
1876 if (streq(name, "StartLimitIntervalUSec"))
7bf081a1 1877 return bus_set_transient_usec(u, name, &u->start_ratelimit.interval, message, flags, error);
faa781cf
YW		 1878
1879 if (streq(name, "StartLimitBurst"))
7bf081a1 1880 return bus_set_transient_unsigned(u, name, &u->start_ratelimit.burst, message, flags, error);
faa781cf
YW		 1881
1882 if (streq(name, "StartLimitAction"))
1883 return bus_set_transient_emergency_action(u, name, &u->start_limit_action, message, flags, error);
1884
1885 if (streq(name, "FailureAction"))
1886 return bus_set_transient_emergency_action(u, name, &u->failure_action, message, flags, error);
1887
1888 if (streq(name, "SuccessAction"))
1889 return bus_set_transient_emergency_action(u, name, &u->success_action, message, flags, error);
1890
7af67e9a
LP		 1891 if (streq(name, "FailureActionExitStatus"))
1892 return bus_set_transient_exit_status(u, name, &u->failure_action_exit_status, message, flags, error);
1893
1894 if (streq(name, "SuccessActionExitStatus"))
1895 return bus_set_transient_exit_status(u, name, &u->success_action_exit_status, message, flags, error);
1896
faa781cf
YW		 1897 if (streq(name, "RebootArgument"))
1898 return bus_set_transient_string(u, name, &u->reboot_arg, message, flags, error);
1899
1900 if (streq(name, "CollectMode"))
1901 return bus_set_transient_collect_mode(u, name, &u->collect_mode, message, flags, error);
1902
1903 if (streq(name, "Conditions"))
1904 return bus_set_transient_conditions(u, name, &u->conditions, true, message, flags, error);
1905
1906 if (streq(name, "Asserts"))
1907 return bus_set_transient_conditions(u, name, &u->asserts, false, message, flags, error);
1908
1909 if (streq(name, "Documentation")) {
1910 _cleanup_strv_free_ char **l = NULL;
1911 char **p;
1912
1913 r = sd_bus_message_read_strv(message, &l);
5afe510c
LP		 1914 if (r < 0)
1915 return r;
1916
faa781cf
YW		 1917 STRV_FOREACH(p, l) {
1918 if (!documentation_url_is_valid(*p))
1919 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid URL in %s: %s", name, *p);
1920 }
5afe510c 1921
2e59b241 1922 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
faa781cf
YW		 1923 if (strv_isempty(l)) {
1924 u->documentation = strv_free(u->documentation);
1925 unit_write_settingf(u, flags, name, "%s=", name);
1926 } else {
1927 strv_extend_strv(&u->documentation, l, false);
1928
1929 STRV_FOREACH(p, l)
1930 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
1931 }
5afe510c
LP		 1932 }
1933
1934 return 1;
1935
d79200e2
LP		 1936 } else if (streq(name, "Slice")) {
1937 Unit *slice;
c221420b 1938 const char *s;
c221420b 1939
d79200e2
LP		 1940 if (!UNIT_HAS_CGROUP_CONTEXT(u))
1941 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "The slice property is only available for units with control groups.");
1942 if (u->type == UNIT_SLICE)
1943 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Slice may not be set for slice units.");
efdb0237
LP		 1944 if (unit_has_name(u, SPECIAL_INIT_SCOPE))
1945 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot set slice for init.scope");
d79200e2 1946
718db961
LP		 1947 r = sd_bus_message_read(message, "s", &s);
1948 if (r < 0)
1949 return r;
c221420b 1950
d79200e2
LP		 1951 if (!unit_name_is_valid(s, UNIT_NAME_PLAIN))
1952 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name '%s'", s);
1953
aea529e5
LP		 1954 /* Note that we do not dispatch the load queue here yet, as we don't want our own transient unit to be
1955 * loaded while we are still setting it up. Or in other words, we use manager_load_unit_prepare()
1956 * instead of manager_load_unit() on purpose, here. */
1957 r = manager_load_unit_prepare(u->manager, s, NULL, error, &slice);
d79200e2
LP		 1958 if (r < 0)
1959 return r;
c221420b 1960
d79200e2
LP		 1961 if (slice->type != UNIT_SLICE)
1962 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit name '%s' is not a slice", s);
b9316fb0 1963
2e59b241 1964 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
d79200e2 1965 r = unit_set_slice(u, slice);
8aec412f
LP		 1966 if (r < 0)
1967 return r;
c221420b 1968
2e59b241 1969 unit_write_settingf(u, flags|UNIT_PRIVATE, name, "Slice=%s", s);
8aec412f 1970 }
b9ec9359 1971
c221420b 1972 return 1;
d79200e2 1973
faa781cf
YW		 1974 } else if (streq(name, "RequiresMountsFor")) {
1975 _cleanup_strv_free_ char **l = NULL;
1976 char **p;
1977
1978 r = sd_bus_message_read_strv(message, &l);
1979 if (r < 0)
1980 return r;
1981
1982 STRV_FOREACH(p, l) {
b459700b
YW		 1983 path_simplify(*p, true);
1984
faa781cf
YW		 1985 if (!path_is_absolute(*p))
1986 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not absolute: %s", name, *p);
1987
b459700b
YW		 1988 if (!path_is_valid(*p))
1989 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s has invalid length: %s", name, *p);
1990
1991 if (!path_is_normalized(*p))
1992 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path specified in %s is not normalized: %s", name, *p);
1993
faa781cf
YW		 1994 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1995 r = unit_require_mounts_for(u, *p, UNIT_DEPENDENCY_FILE);
1996 if (r < 0)
1997 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to add required mount \"%s\": %m", *p);
7fb3ee51 1998
faa781cf
YW		 1999 unit_write_settingf(u, flags, name, "%s=%s", name, *p);
2000 }
f32b43bd 2001 }
7fb3ee51 2002
faa781cf
YW		 2003 return 1;
2004 }
2005
2006 if (streq(name, "RequiresOverridable"))
2007 d = UNIT_REQUIRES; /* redirect for obsolete unit dependency type */
2008 else if (streq(name, "RequisiteOverridable"))
2009 d = UNIT_REQUISITE; /* same here */
2010 else
2011 d = unit_dependency_from_string(name);
2012
2013 if (d >= 0) {
2014 const char *other;
2015
40430848
LP		 2016 if (!IN_SET(d,
2017 UNIT_REQUIRES,
2018 UNIT_REQUISITE,
2019 UNIT_WANTS,
2020 UNIT_BINDS_TO,
2021 UNIT_PART_OF,
2022 UNIT_CONFLICTS,
2023 UNIT_BEFORE,
2024 UNIT_AFTER,
2025 UNIT_ON_FAILURE,
2026 UNIT_PROPAGATES_RELOAD_TO,
2027 UNIT_RELOAD_PROPAGATED_FROM,
2028 UNIT_JOINS_NAMESPACE_OF))
2029 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Dependency type %s may not be created transiently.", unit_dependency_to_string(d));
2030
718db961
LP		 2031 r = sd_bus_message_enter_container(message, 'a', "s");
2032 if (r < 0)
2033 return r;
7fb3ee51 2034
718db961 2035 while ((r = sd_bus_message_read(message, "s", &other)) > 0) {
7410616c 2036 if (!unit_name_is_valid(other, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
718db961 2037 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name %s", other);
7fb3ee51 2038
2e59b241 2039 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
b9ec9359 2040 _cleanup_free_ char *label = NULL;
7fb3ee51 2041
35d8c19a 2042 r = unit_add_dependency_by_name(u, d, other, true, UNIT_DEPENDENCY_FILE);
7fb3ee51
LP		 2043 if (r < 0)
2044 return r;
2045
605405c6 2046 label = strjoin(name, "-", other);
7fb3ee51
LP		 2047 if (!label)
2048 return -ENOMEM;
2049
faa781cf 2050 unit_write_settingf(u, flags, label, "%s=%s", unit_dependency_to_string(d), other);
7fb3ee51
LP		 2051 }
2052
7fb3ee51 2053 }
718db961
LP		 2054 if (r < 0)
2055 return r;
7fb3ee51 2056
6ce270b1
LP		 2057 r = sd_bus_message_exit_container(message);
2058 if (r < 0)
2059 return r;
2060
7fb3ee51 2061 return 1;
05a98afd
LP		 2062
2063 } else if (streq(name, "AddRef")) {
2064
2065 int b;
2066
2067 /* Why is this called "AddRef" rather than just "Ref", or "Reference"? There's already a "Ref()" method
2068 * on the Unit interface, and it's probably not a good idea to expose a property and a method on the
2069 * same interface (well, strictly speaking AddRef isn't exposed as full property, we just read it for
2070 * transient units, but still). And "References" and "ReferencedBy" is already used as unit reference
2071 * dependency type, hence let's not confuse things with that.
2072 *
5238e957 2073 * Note that we don't actually add the reference to the bus track. We do that only after the setup of
05a98afd
LP		 2074 * the transient unit is complete, so that setting this property multiple times in the same transient
2075 * unit creation call doesn't count as individual references. */
2076
2077 r = sd_bus_message_read(message, "b", &b);
2078 if (r < 0)
2079 return r;
2080
2e59b241 2081 if (!UNIT_WRITE_FLAGS_NOOP(flags))
05a98afd
LP		 2082 u->bus_track_add = b;
2083
2084 return 1;
9f2e86af
LP		 2085 }
2086
2087 return 0;
2088}
2089
c2756a68
LP		 2090int bus_unit_set_properties(
2091 Unit *u,
718db961 2092 sd_bus_message *message,
2e59b241 2093 UnitWriteFlags flags,
c2756a68 2094 bool commit,
718db961 2095 sd_bus_error *error) {
c2756a68 2096
8e2af478 2097 bool for_real = false;
8e2af478
LP		 2098 unsigned n = 0;
2099 int r;
2100
2101 assert(u);
718db961 2102 assert(message);
8e2af478
LP		 2103
2104 /* We iterate through the array twice. First run we just check
2105 * if all passed data is valid, second run actually applies
2106 * it. This is to implement transaction-like behaviour without
2107 * actually providing full transactions. */
2108
718db961
LP		 2109 r = sd_bus_message_enter_container(message, 'a', "(sv)");
2110 if (r < 0)
2111 return r;
8e2af478 2112
8e2af478 2113 for (;;) {
8e2af478 2114 const char *name;
2e59b241 2115 UnitWriteFlags f;
8e2af478 2116
718db961
LP		 2117 r = sd_bus_message_enter_container(message, 'r', "sv");
2118 if (r < 0)
2119 return r;
2120 if (r == 0) {
2e59b241 2121 if (for_real || UNIT_WRITE_FLAGS_NOOP(flags))
8e2af478
LP		 2122 break;
2123
2124 /* Reached EOF. Let's try again, and this time for realz... */
718db961
LP		 2125 r = sd_bus_message_rewind(message, false);
2126 if (r < 0)
2127 return r;
6ce270b1 2128
8e2af478
LP		 2129 for_real = true;
2130 continue;
2131 }
2132
718db961
LP		 2133 r = sd_bus_message_read(message, "s", &name);
2134 if (r < 0)
2135 return r;
8e2af478 2136
718db961
LP		 2137 if (!UNIT_VTABLE(u)->bus_set_property)
2138 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");
8e2af478 2139
718db961
LP		 2140 r = sd_bus_message_enter_container(message, 'v', NULL);
2141 if (r < 0)
2142 return r;
8e2af478 2143
2e59b241
LP		 2144 /* If not for real, then mask out the two target flags */
2145 f = for_real ? flags : (flags & ~(UNIT_RUNTIME|UNIT_PERSISTENT));
2146
2147 r = UNIT_VTABLE(u)->bus_set_property(u, name, message, f, error);
9f2e86af 2148 if (r == 0 && u->transient && u->load_state == UNIT_STUB)
2e59b241 2149 r = bus_unit_set_transient_property(u, name, message, f, error);
721060d4
LP		 2150 if (r == 0)
2151 r = bus_unit_set_live_property(u, name, message, f, error);
718db961
LP		 2152 if (r < 0)
2153 return r;
721060d4 2154
718db961
LP		 2155 if (r == 0)
2156 return sd_bus_error_setf(error, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);
2157
2158 r = sd_bus_message_exit_container(message);
8e2af478
LP		 2159 if (r < 0)
2160 return r;
8e2af478 2161
718db961
LP		 2162 r = sd_bus_message_exit_container(message);
2163 if (r < 0)
2164 return r;
8e2af478
LP		 2165
2166 n += for_real;
2167 }
2168
6ce270b1
LP		 2169 r = sd_bus_message_exit_container(message);
2170 if (r < 0)
2171 return r;
2172
c2756a68 2173 if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)
8e2af478
LP		 2174 UNIT_VTABLE(u)->bus_commit_properties(u);
2175
241da328 2176 return n;
8e2af478 2177}
000a996d 2178
e49da001 2179int bus_unit_validate_load_state(Unit *u, sd_bus_error *error) {
6eb7c172 2180 assert(u);
000a996d 2181
e49da001 2182 /* Generates a pretty error if a unit isn't properly loaded. */
000a996d 2183
e49da001
LP		 2184 switch (u->load_state) {
2185
2186 case UNIT_LOADED:
2187 return 0;
000a996d 2188
e49da001 2189 case UNIT_NOT_FOUND:
b21d2f81 2190 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not found.", u->id);
000a996d 2191
c4555ad8
LP		 2192 case UNIT_BAD_SETTING:
2193 return sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING, "Unit %s has a bad unit file setting.", u->id);
2194
e49da001 2195 case UNIT_ERROR: /* Only show .load_error in UNIT_ERROR state */
06bed19e 2196 return sd_bus_error_set_errnof(error, u->load_error, "Unit %s failed to load properly: %m.", u->id);
e49da001
LP		 2197
2198 case UNIT_MASKED:
2199 return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", u->id);
2200
2201 case UNIT_STUB:
2202 case UNIT_MERGED:
2203 default:
2204 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unexpected load state of unit %s", u->id);
2205 }
000a996d 2206}
05a98afd 2207
c5a97ed1 2208static int bus_unit_track_handler(sd_bus_track *t, void *userdata) {
05a98afd
LP		 2209 Unit *u = userdata;
2210
2211 assert(t);
2212 assert(u);
2213
2214 u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */
2215
e5c36295
LP		 2216 /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
2217 * let's see */
2218 unit_add_to_cgroup_empty_queue(u);
2219
2220 /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
05a98afd 2221 unit_add_to_gc_queue(u);
e5c36295 2222
05a98afd
LP		 2223 return 0;
2224}
2225
c5a97ed1 2226static int bus_unit_allocate_bus_track(Unit *u) {
05a98afd
LP		 2227 int r;
2228
2229 assert(u);
2230
2231 if (u->bus_track)
2232 return 0;
2233
c5a97ed1 2234 r = sd_bus_track_new(u->manager->api_bus, &u->bus_track, bus_unit_track_handler, u);
05a98afd
LP		 2235 if (r < 0)
2236 return r;
2237
2238 r = sd_bus_track_set_recursive(u->bus_track, true);
2239 if (r < 0) {
2240 u->bus_track = sd_bus_track_unref(u->bus_track);
2241 return r;
2242 }
2243
2244 return 0;
2245}
2246
2247int bus_unit_track_add_name(Unit *u, const char *name) {
2248 int r;
2249
2250 assert(u);
2251
c5a97ed1 2252 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2253 if (r < 0)
2254 return r;
2255
2256 return sd_bus_track_add_name(u->bus_track, name);
2257}
2258
2259int bus_unit_track_add_sender(Unit *u, sd_bus_message *m) {
2260 int r;
2261
2262 assert(u);
2263
c5a97ed1 2264 r = bus_unit_allocate_bus_track(u);
05a98afd
LP		 2265 if (r < 0)
2266 return r;
2267
2268 return sd_bus_track_add_sender(u->bus_track, m);
2269}
2270
2271int bus_unit_track_remove_sender(Unit *u, sd_bus_message *m) {
2272 assert(u);
2273
2274 /* If we haven't allocated the bus track object yet, then there's definitely no reference taken yet, return an
2275 * error */
2276 if (!u->bus_track)
2277 return -EUNATCH;
2278
2279 return sd_bus_track_remove_sender(u->bus_track, m);
2280}
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