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Merge pull request #12217 from keszybz/unlocked-operations
[thirdparty/systemd.git] / src / core / dbus-cgroup.c
1 /* SPDX-License-Identifier: LGPL-2.1+ */
2
3 #include <arpa/inet.h>
4
5 #include "af-list.h"
6 #include "alloc-util.h"
7 #include "bpf-firewall.h"
8 #include "bus-util.h"
9 #include "cgroup-util.h"
10 #include "cgroup.h"
11 #include "dbus-cgroup.h"
12 #include "dbus-util.h"
13 #include "fd-util.h"
14 #include "fileio.h"
15 #include "limits-util.h"
16 #include "path-util.h"
17
18 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_cgroup_device_policy, cgroup_device_policy, CGroupDevicePolicy);
19
20 static int property_get_cgroup_mask(
21 sd_bus *bus,
22 const char *path,
23 const char *interface,
24 const char *property,
25 sd_bus_message *reply,
26 void *userdata,
27 sd_bus_error *error) {
28
29 CGroupMask *mask = userdata;
30 CGroupController ctrl;
31 int r;
32
33 assert(bus);
34 assert(reply);
35
36 r = sd_bus_message_open_container(reply, 'a', "s");
37 if (r < 0)
38 return r;
39
40 for (ctrl = 0; ctrl < _CGROUP_CONTROLLER_MAX; ctrl++) {
41 if ((*mask & CGROUP_CONTROLLER_TO_MASK(ctrl)) == 0)
42 continue;
43
44 r = sd_bus_message_append(reply, "s", cgroup_controller_to_string(ctrl));
45 if (r < 0)
46 return r;
47 }
48
49 return sd_bus_message_close_container(reply);
50 }
51
52 static int property_get_delegate_controllers(
53 sd_bus *bus,
54 const char *path,
55 const char *interface,
56 const char *property,
57 sd_bus_message *reply,
58 void *userdata,
59 sd_bus_error *error) {
60
61 CGroupContext *c = userdata;
62
63 assert(bus);
64 assert(reply);
65 assert(c);
66
67 if (!c->delegate)
68 return sd_bus_message_append(reply, "as", 0);
69
70 return property_get_cgroup_mask(bus, path, interface, property, reply, &c->delegate_controllers, error);
71 }
72
73 static int property_get_io_device_weight(
74 sd_bus *bus,
75 const char *path,
76 const char *interface,
77 const char *property,
78 sd_bus_message *reply,
79 void *userdata,
80 sd_bus_error *error) {
81
82 CGroupContext *c = userdata;
83 CGroupIODeviceWeight *w;
84 int r;
85
86 assert(bus);
87 assert(reply);
88 assert(c);
89
90 r = sd_bus_message_open_container(reply, 'a', "(st)");
91 if (r < 0)
92 return r;
93
94 LIST_FOREACH(device_weights, w, c->io_device_weights) {
95 r = sd_bus_message_append(reply, "(st)", w->path, w->weight);
96 if (r < 0)
97 return r;
98 }
99
100 return sd_bus_message_close_container(reply);
101 }
102
103 static int property_get_io_device_limits(
104 sd_bus *bus,
105 const char *path,
106 const char *interface,
107 const char *property,
108 sd_bus_message *reply,
109 void *userdata,
110 sd_bus_error *error) {
111
112 CGroupContext *c = userdata;
113 CGroupIODeviceLimit *l;
114 int r;
115
116 assert(bus);
117 assert(reply);
118 assert(c);
119
120 r = sd_bus_message_open_container(reply, 'a', "(st)");
121 if (r < 0)
122 return r;
123
124 LIST_FOREACH(device_limits, l, c->io_device_limits) {
125 CGroupIOLimitType type;
126
127 type = cgroup_io_limit_type_from_string(property);
128 if (type < 0 || l->limits[type] == cgroup_io_limit_defaults[type])
129 continue;
130
131 r = sd_bus_message_append(reply, "(st)", l->path, l->limits[type]);
132 if (r < 0)
133 return r;
134 }
135
136 return sd_bus_message_close_container(reply);
137 }
138
139 static int property_get_io_device_latency(
140 sd_bus *bus,
141 const char *path,
142 const char *interface,
143 const char *property,
144 sd_bus_message *reply,
145 void *userdata,
146 sd_bus_error *error) {
147
148 CGroupContext *c = userdata;
149 CGroupIODeviceLatency *l;
150 int r;
151
152 assert(bus);
153 assert(reply);
154 assert(c);
155
156 r = sd_bus_message_open_container(reply, 'a', "(st)");
157 if (r < 0)
158 return r;
159
160 LIST_FOREACH(device_latencies, l, c->io_device_latencies) {
161 r = sd_bus_message_append(reply, "(st)", l->path, l->target_usec);
162 if (r < 0)
163 return r;
164 }
165
166 return sd_bus_message_close_container(reply);
167 }
168
169 static int property_get_blockio_device_weight(
170 sd_bus *bus,
171 const char *path,
172 const char *interface,
173 const char *property,
174 sd_bus_message *reply,
175 void *userdata,
176 sd_bus_error *error) {
177
178 CGroupContext *c = userdata;
179 CGroupBlockIODeviceWeight *w;
180 int r;
181
182 assert(bus);
183 assert(reply);
184 assert(c);
185
186 r = sd_bus_message_open_container(reply, 'a', "(st)");
187 if (r < 0)
188 return r;
189
190 LIST_FOREACH(device_weights, w, c->blockio_device_weights) {
191 r = sd_bus_message_append(reply, "(st)", w->path, w->weight);
192 if (r < 0)
193 return r;
194 }
195
196 return sd_bus_message_close_container(reply);
197 }
198
199 static int property_get_blockio_device_bandwidths(
200 sd_bus *bus,
201 const char *path,
202 const char *interface,
203 const char *property,
204 sd_bus_message *reply,
205 void *userdata,
206 sd_bus_error *error) {
207
208 CGroupContext *c = userdata;
209 CGroupBlockIODeviceBandwidth *b;
210 int r;
211
212 assert(bus);
213 assert(reply);
214 assert(c);
215
216 r = sd_bus_message_open_container(reply, 'a', "(st)");
217 if (r < 0)
218 return r;
219
220 LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
221 uint64_t v;
222
223 if (streq(property, "BlockIOReadBandwidth"))
224 v = b->rbps;
225 else
226 v = b->wbps;
227
228 if (v == CGROUP_LIMIT_MAX)
229 continue;
230
231 r = sd_bus_message_append(reply, "(st)", b->path, v);
232 if (r < 0)
233 return r;
234 }
235
236 return sd_bus_message_close_container(reply);
237 }
238
239 static int property_get_device_allow(
240 sd_bus *bus,
241 const char *path,
242 const char *interface,
243 const char *property,
244 sd_bus_message *reply,
245 void *userdata,
246 sd_bus_error *error) {
247
248 CGroupContext *c = userdata;
249 CGroupDeviceAllow *a;
250 int r;
251
252 assert(bus);
253 assert(reply);
254 assert(c);
255
256 r = sd_bus_message_open_container(reply, 'a', "(ss)");
257 if (r < 0)
258 return r;
259
260 LIST_FOREACH(device_allow, a, c->device_allow) {
261 unsigned k = 0;
262 char rwm[4];
263
264 if (a->r)
265 rwm[k++] = 'r';
266 if (a->w)
267 rwm[k++] = 'w';
268 if (a->m)
269 rwm[k++] = 'm';
270
271 rwm[k] = 0;
272
273 r = sd_bus_message_append(reply, "(ss)", a->path, rwm);
274 if (r < 0)
275 return r;
276 }
277
278 return sd_bus_message_close_container(reply);
279 }
280
281 static int property_get_ip_address_access(
282 sd_bus *bus,
283 const char *path,
284 const char *interface,
285 const char *property,
286 sd_bus_message *reply,
287 void *userdata,
288 sd_bus_error *error) {
289
290 IPAddressAccessItem** items = userdata, *i;
291 int r;
292
293 r = sd_bus_message_open_container(reply, 'a', "(iayu)");
294 if (r < 0)
295 return r;
296
297 LIST_FOREACH(items, i, *items) {
298
299 r = sd_bus_message_open_container(reply, 'r', "iayu");
300 if (r < 0)
301 return r;
302
303 r = sd_bus_message_append(reply, "i", i->family);
304 if (r < 0)
305 return r;
306
307 r = sd_bus_message_append_array(reply, 'y', &i->address, FAMILY_ADDRESS_SIZE(i->family));
308 if (r < 0)
309 return r;
310
311 r = sd_bus_message_append(reply, "u", (uint32_t) i->prefixlen);
312 if (r < 0)
313 return r;
314
315 r = sd_bus_message_close_container(reply);
316 if (r < 0)
317 return r;
318 }
319
320 return sd_bus_message_close_container(reply);
321 }
322
323 const sd_bus_vtable bus_cgroup_vtable[] = {
324 SD_BUS_VTABLE_START(0),
325 SD_BUS_PROPERTY("Delegate", "b", bus_property_get_bool, offsetof(CGroupContext, delegate), 0),
326 SD_BUS_PROPERTY("DelegateControllers", "as", property_get_delegate_controllers, 0, 0),
327 SD_BUS_PROPERTY("CPUAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, cpu_accounting), 0),
328 SD_BUS_PROPERTY("CPUWeight", "t", NULL, offsetof(CGroupContext, cpu_weight), 0),
329 SD_BUS_PROPERTY("StartupCPUWeight", "t", NULL, offsetof(CGroupContext, startup_cpu_weight), 0),
330 SD_BUS_PROPERTY("CPUShares", "t", NULL, offsetof(CGroupContext, cpu_shares), 0),
331 SD_BUS_PROPERTY("StartupCPUShares", "t", NULL, offsetof(CGroupContext, startup_cpu_shares), 0),
332 SD_BUS_PROPERTY("CPUQuotaPerSecUSec", "t", bus_property_get_usec, offsetof(CGroupContext, cpu_quota_per_sec_usec), 0),
333 SD_BUS_PROPERTY("CPUQuotaPeriodUSec", "t", bus_property_get_usec, offsetof(CGroupContext, cpu_quota_period_usec), 0),
334 SD_BUS_PROPERTY("IOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, io_accounting), 0),
335 SD_BUS_PROPERTY("IOWeight", "t", NULL, offsetof(CGroupContext, io_weight), 0),
336 SD_BUS_PROPERTY("StartupIOWeight", "t", NULL, offsetof(CGroupContext, startup_io_weight), 0),
337 SD_BUS_PROPERTY("IODeviceWeight", "a(st)", property_get_io_device_weight, 0, 0),
338 SD_BUS_PROPERTY("IOReadBandwidthMax", "a(st)", property_get_io_device_limits, 0, 0),
339 SD_BUS_PROPERTY("IOWriteBandwidthMax", "a(st)", property_get_io_device_limits, 0, 0),
340 SD_BUS_PROPERTY("IOReadIOPSMax", "a(st)", property_get_io_device_limits, 0, 0),
341 SD_BUS_PROPERTY("IOWriteIOPSMax", "a(st)", property_get_io_device_limits, 0, 0),
342 SD_BUS_PROPERTY("IODeviceLatencyTargetUSec", "a(st)", property_get_io_device_latency, 0, 0),
343 SD_BUS_PROPERTY("BlockIOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, blockio_accounting), 0),
344 SD_BUS_PROPERTY("BlockIOWeight", "t", NULL, offsetof(CGroupContext, blockio_weight), 0),
345 SD_BUS_PROPERTY("StartupBlockIOWeight", "t", NULL, offsetof(CGroupContext, startup_blockio_weight), 0),
346 SD_BUS_PROPERTY("BlockIODeviceWeight", "a(st)", property_get_blockio_device_weight, 0, 0),
347 SD_BUS_PROPERTY("BlockIOReadBandwidth", "a(st)", property_get_blockio_device_bandwidths, 0, 0),
348 SD_BUS_PROPERTY("BlockIOWriteBandwidth", "a(st)", property_get_blockio_device_bandwidths, 0, 0),
349 SD_BUS_PROPERTY("MemoryAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, memory_accounting), 0),
350 SD_BUS_PROPERTY("MemoryMin", "t", NULL, offsetof(CGroupContext, memory_min), 0),
351 SD_BUS_PROPERTY("MemoryLow", "t", NULL, offsetof(CGroupContext, memory_low), 0),
352 SD_BUS_PROPERTY("MemoryHigh", "t", NULL, offsetof(CGroupContext, memory_high), 0),
353 SD_BUS_PROPERTY("MemoryMax", "t", NULL, offsetof(CGroupContext, memory_max), 0),
354 SD_BUS_PROPERTY("MemorySwapMax", "t", NULL, offsetof(CGroupContext, memory_swap_max), 0),
355 SD_BUS_PROPERTY("MemoryLimit", "t", NULL, offsetof(CGroupContext, memory_limit), 0),
356 SD_BUS_PROPERTY("DevicePolicy", "s", property_get_cgroup_device_policy, offsetof(CGroupContext, device_policy), 0),
357 SD_BUS_PROPERTY("DeviceAllow", "a(ss)", property_get_device_allow, 0, 0),
358 SD_BUS_PROPERTY("TasksAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, tasks_accounting), 0),
359 SD_BUS_PROPERTY("TasksMax", "t", NULL, offsetof(CGroupContext, tasks_max), 0),
360 SD_BUS_PROPERTY("IPAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, ip_accounting), 0),
361 SD_BUS_PROPERTY("IPAddressAllow", "a(iayu)", property_get_ip_address_access, offsetof(CGroupContext, ip_address_allow), 0),
362 SD_BUS_PROPERTY("IPAddressDeny", "a(iayu)", property_get_ip_address_access, offsetof(CGroupContext, ip_address_deny), 0),
363 SD_BUS_PROPERTY("DisableControllers", "as", property_get_cgroup_mask, offsetof(CGroupContext, disable_controllers), 0),
364 SD_BUS_VTABLE_END
365 };
366
367 static int bus_cgroup_set_transient_property(
368 Unit *u,
369 CGroupContext *c,
370 const char *name,
371 sd_bus_message *message,
372 UnitWriteFlags flags,
373 sd_bus_error *error) {
374
375 int r;
376
377 assert(u);
378 assert(c);
379 assert(name);
380 assert(message);
381
382 flags |= UNIT_PRIVATE;
383
384 if (streq(name, "Delegate")) {
385 int b;
386
387 if (!UNIT_VTABLE(u)->can_delegate)
388 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delegation not available for unit type");
389
390 r = sd_bus_message_read(message, "b", &b);
391 if (r < 0)
392 return r;
393
394 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
395 c->delegate = b;
396 c->delegate_controllers = b ? _CGROUP_MASK_ALL : 0;
397
398 unit_write_settingf(u, flags, name, "Delegate=%s", yes_no(b));
399 }
400
401 return 1;
402
403 } else if (streq(name, "DelegateControllers")) {
404 CGroupMask mask = 0;
405
406 if (!UNIT_VTABLE(u)->can_delegate)
407 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delegation not available for unit type");
408
409 r = sd_bus_message_enter_container(message, 'a', "s");
410 if (r < 0)
411 return r;
412
413 for (;;) {
414 CGroupController cc;
415 const char *t;
416
417 r = sd_bus_message_read(message, "s", &t);
418 if (r < 0)
419 return r;
420 if (r == 0)
421 break;
422
423 cc = cgroup_controller_from_string(t);
424 if (cc < 0)
425 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown cgroup controller '%s'", t);
426
427 mask |= CGROUP_CONTROLLER_TO_MASK(cc);
428 }
429
430 r = sd_bus_message_exit_container(message);
431 if (r < 0)
432 return r;
433
434 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
435 _cleanup_free_ char *t = NULL;
436
437 r = cg_mask_to_string(mask, &t);
438 if (r < 0)
439 return r;
440
441 c->delegate = true;
442 if (mask == 0)
443 c->delegate_controllers = 0;
444 else
445 c->delegate_controllers |= mask;
446
447 unit_write_settingf(u, flags, name, "Delegate=%s", strempty(t));
448 }
449
450 return 1;
451 }
452
453 return 0;
454 }
455
456 static int bus_cgroup_set_boolean(
457 Unit *u,
458 const char *name,
459 bool *p,
460 CGroupMask mask,
461 sd_bus_message *message,
462 UnitWriteFlags flags,
463 sd_bus_error *error) {
464
465 int b, r;
466
467 assert(p);
468
469 r = sd_bus_message_read(message, "b", &b);
470 if (r < 0)
471 return r;
472
473 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
474 *p = b;
475 unit_invalidate_cgroup(u, mask);
476 unit_write_settingf(u, flags, name, "%s=%s", name, yes_no(b));
477 }
478
479 return 1;
480 }
481
482 #define BUS_DEFINE_SET_CGROUP_WEIGHT(function, mask, check, val) \
483 static int bus_cgroup_set_##function( \
484 Unit *u, \
485 const char *name, \
486 uint64_t *p, \
487 sd_bus_message *message, \
488 UnitWriteFlags flags, \
489 sd_bus_error *error) { \
490 \
491 uint64_t v; \
492 int r; \
493 \
494 assert(p); \
495 \
496 r = sd_bus_message_read(message, "t", &v); \
497 if (r < 0) \
498 return r; \
499 \
500 if (!check(v)) \
501 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
502 "Value specified in %s is out of range", name); \
503 \
504 if (!UNIT_WRITE_FLAGS_NOOP(flags)) { \
505 *p = v; \
506 unit_invalidate_cgroup(u, (mask)); \
507 \
508 if (v == (val)) \
509 unit_write_settingf(u, flags, name, \
510 "%s=", name); \
511 else \
512 unit_write_settingf(u, flags, name, \
513 "%s=%" PRIu64, name, v); \
514 } \
515 \
516 return 1; \
517 }
518
519 #define BUS_DEFINE_SET_CGROUP_LIMIT(function, mask, scale, minimum) \
520 static int bus_cgroup_set_##function( \
521 Unit *u, \
522 const char *name, \
523 uint64_t *p, \
524 sd_bus_message *message, \
525 UnitWriteFlags flags, \
526 sd_bus_error *error) { \
527 \
528 uint64_t v; \
529 int r; \
530 \
531 assert(p); \
532 \
533 r = sd_bus_message_read(message, "t", &v); \
534 if (r < 0) \
535 return r; \
536 \
537 if (v < minimum) \
538 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
539 "Value specified in %s is out of range", name); \
540 \
541 if (!UNIT_WRITE_FLAGS_NOOP(flags)) { \
542 *p = v; \
543 unit_invalidate_cgroup(u, (mask)); \
544 \
545 if (v == CGROUP_LIMIT_MAX) \
546 unit_write_settingf(u, flags, name, \
547 "%s=infinity", name); \
548 else \
549 unit_write_settingf(u, flags, name, \
550 "%s=%" PRIu64, name, v); \
551 } \
552 \
553 return 1; \
554 } \
555 static int bus_cgroup_set_##function##_scale( \
556 Unit *u, \
557 const char *name, \
558 uint64_t *p, \
559 sd_bus_message *message, \
560 UnitWriteFlags flags, \
561 sd_bus_error *error) { \
562 \
563 uint64_t v; \
564 uint32_t raw; \
565 int r; \
566 \
567 assert(p); \
568 \
569 r = sd_bus_message_read(message, "u", &raw); \
570 if (r < 0) \
571 return r; \
572 \
573 v = scale(raw, UINT32_MAX); \
574 if (v < minimum || v >= UINT64_MAX) \
575 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
576 "Value specified in %s is out of range", name); \
577 \
578 if (!UNIT_WRITE_FLAGS_NOOP(flags)) { \
579 const char *e; \
580 \
581 *p = v; \
582 unit_invalidate_cgroup(u, (mask)); \
583 \
584 /* Chop off suffix */ \
585 assert_se(e = endswith(name, "Scale")); \
586 name = strndupa(name, e - name); \
587 \
588 unit_write_settingf(u, flags, name, "%s=%" PRIu32 "%%", name, \
589 (uint32_t) (DIV_ROUND_UP((uint64_t) raw * 100U, (uint64_t) UINT32_MAX))); \
590 } \
591 \
592 return 1; \
593 }
594
595 #pragma GCC diagnostic push
596 #pragma GCC diagnostic ignored "-Wtype-limits"
597 BUS_DEFINE_SET_CGROUP_WEIGHT(cpu_weight, CGROUP_MASK_CPU, CGROUP_WEIGHT_IS_OK, CGROUP_WEIGHT_INVALID);
598 BUS_DEFINE_SET_CGROUP_WEIGHT(cpu_shares, CGROUP_MASK_CPU, CGROUP_CPU_SHARES_IS_OK, CGROUP_CPU_SHARES_INVALID);
599 BUS_DEFINE_SET_CGROUP_WEIGHT(io_weight, CGROUP_MASK_IO, CGROUP_WEIGHT_IS_OK, CGROUP_WEIGHT_INVALID);
600 BUS_DEFINE_SET_CGROUP_WEIGHT(blockio_weight, CGROUP_MASK_BLKIO, CGROUP_BLKIO_WEIGHT_IS_OK, CGROUP_BLKIO_WEIGHT_INVALID);
601 BUS_DEFINE_SET_CGROUP_LIMIT(memory, CGROUP_MASK_MEMORY, physical_memory_scale, 1);
602 BUS_DEFINE_SET_CGROUP_LIMIT(swap, CGROUP_MASK_MEMORY, physical_memory_scale, 0);
603 BUS_DEFINE_SET_CGROUP_LIMIT(tasks_max, CGROUP_MASK_PIDS, system_tasks_max_scale, 1);
604 #pragma GCC diagnostic pop
605
606 int bus_cgroup_set_property(
607 Unit *u,
608 CGroupContext *c,
609 const char *name,
610 sd_bus_message *message,
611 UnitWriteFlags flags,
612 sd_bus_error *error) {
613
614 CGroupIOLimitType iol_type;
615 int r;
616
617 assert(u);
618 assert(c);
619 assert(name);
620 assert(message);
621
622 flags |= UNIT_PRIVATE;
623
624 if (streq(name, "CPUAccounting"))
625 return bus_cgroup_set_boolean(u, name, &c->cpu_accounting, get_cpu_accounting_mask(), message, flags, error);
626
627 if (streq(name, "CPUWeight"))
628 return bus_cgroup_set_cpu_weight(u, name, &c->cpu_weight, message, flags, error);
629
630 if (streq(name, "StartupCPUWeight"))
631 return bus_cgroup_set_cpu_weight(u, name, &c->startup_cpu_weight, message, flags, error);
632
633 if (streq(name, "CPUShares"))
634 return bus_cgroup_set_cpu_shares(u, name, &c->cpu_shares, message, flags, error);
635
636 if (streq(name, "StartupCPUShares"))
637 return bus_cgroup_set_cpu_shares(u, name, &c->startup_cpu_shares, message, flags, error);
638
639 if (streq(name, "IOAccounting"))
640 return bus_cgroup_set_boolean(u, name, &c->io_accounting, CGROUP_MASK_IO, message, flags, error);
641
642 if (streq(name, "IOWeight"))
643 return bus_cgroup_set_io_weight(u, name, &c->io_weight, message, flags, error);
644
645 if (streq(name, "StartupIOWeight"))
646 return bus_cgroup_set_io_weight(u, name, &c->startup_io_weight, message, flags, error);
647
648 if (streq(name, "BlockIOAccounting"))
649 return bus_cgroup_set_boolean(u, name, &c->blockio_accounting, CGROUP_MASK_BLKIO, message, flags, error);
650
651 if (streq(name, "BlockIOWeight"))
652 return bus_cgroup_set_blockio_weight(u, name, &c->blockio_weight, message, flags, error);
653
654 if (streq(name, "StartupBlockIOWeight"))
655 return bus_cgroup_set_blockio_weight(u, name, &c->startup_blockio_weight, message, flags, error);
656
657 if (streq(name, "MemoryAccounting"))
658 return bus_cgroup_set_boolean(u, name, &c->memory_accounting, CGROUP_MASK_MEMORY, message, flags, error);
659
660 if (streq(name, "MemoryMin"))
661 return bus_cgroup_set_memory(u, name, &c->memory_min, message, flags, error);
662
663 if (streq(name, "MemoryLow"))
664 return bus_cgroup_set_memory(u, name, &c->memory_low, message, flags, error);
665
666 if (streq(name, "MemoryHigh"))
667 return bus_cgroup_set_memory(u, name, &c->memory_high, message, flags, error);
668
669 if (streq(name, "MemorySwapMax"))
670 return bus_cgroup_set_swap(u, name, &c->memory_swap_max, message, flags, error);
671
672 if (streq(name, "MemoryMax"))
673 return bus_cgroup_set_memory(u, name, &c->memory_max, message, flags, error);
674
675 if (streq(name, "MemoryLimit"))
676 return bus_cgroup_set_memory(u, name, &c->memory_limit, message, flags, error);
677
678 if (streq(name, "MemoryMinScale"))
679 return bus_cgroup_set_memory_scale(u, name, &c->memory_min, message, flags, error);
680
681 if (streq(name, "MemoryLowScale"))
682 return bus_cgroup_set_memory_scale(u, name, &c->memory_low, message, flags, error);
683
684 if (streq(name, "MemoryHighScale"))
685 return bus_cgroup_set_memory_scale(u, name, &c->memory_high, message, flags, error);
686
687 if (streq(name, "MemorySwapMaxScale"))
688 return bus_cgroup_set_swap_scale(u, name, &c->memory_swap_max, message, flags, error);
689
690 if (streq(name, "MemoryMaxScale"))
691 return bus_cgroup_set_memory_scale(u, name, &c->memory_max, message, flags, error);
692
693 if (streq(name, "MemoryLimitScale"))
694 return bus_cgroup_set_memory_scale(u, name, &c->memory_limit, message, flags, error);
695
696 if (streq(name, "TasksAccounting"))
697 return bus_cgroup_set_boolean(u, name, &c->tasks_accounting, CGROUP_MASK_PIDS, message, flags, error);
698
699 if (streq(name, "TasksMax"))
700 return bus_cgroup_set_tasks_max(u, name, &c->tasks_max, message, flags, error);
701
702 if (streq(name, "TasksMaxScale"))
703 return bus_cgroup_set_tasks_max_scale(u, name, &c->tasks_max, message, flags, error);
704
705 if (streq(name, "CPUQuotaPerSecUSec")) {
706 uint64_t u64;
707
708 r = sd_bus_message_read(message, "t", &u64);
709 if (r < 0)
710 return r;
711
712 if (u64 <= 0)
713 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "CPUQuotaPerSecUSec= value out of range");
714
715 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
716 c->cpu_quota_per_sec_usec = u64;
717 u->warned_clamping_cpu_quota_period = false;
718 unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
719
720 if (c->cpu_quota_per_sec_usec == USEC_INFINITY)
721 unit_write_setting(u, flags, "CPUQuota", "CPUQuota=");
722 else
723 /* config_parse_cpu_quota() requires an integer, so truncating division is used on
724 * purpose here. */
725 unit_write_settingf(u, flags, "CPUQuota",
726 "CPUQuota=%0.f%%",
727 (double) (c->cpu_quota_per_sec_usec / 10000));
728 }
729
730 return 1;
731
732 } else if (streq(name, "CPUQuotaPeriodUSec")) {
733 uint64_t u64;
734
735 r = sd_bus_message_read(message, "t", &u64);
736 if (r < 0)
737 return r;
738
739 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
740 c->cpu_quota_period_usec = u64;
741 u->warned_clamping_cpu_quota_period = false;
742 unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
743 if (c->cpu_quota_period_usec == USEC_INFINITY)
744 unit_write_setting(u, flags, "CPUQuotaPeriodSec", "CPUQuotaPeriodSec=");
745 else {
746 char v[FORMAT_TIMESPAN_MAX];
747 unit_write_settingf(u, flags, "CPUQuotaPeriodSec",
748 "CPUQuotaPeriodSec=%s",
749 format_timespan(v, sizeof(v), c->cpu_quota_period_usec, 1));
750 }
751 }
752
753 return 1;
754
755 } else if ((iol_type = cgroup_io_limit_type_from_string(name)) >= 0) {
756 const char *path;
757 unsigned n = 0;
758 uint64_t u64;
759
760 r = sd_bus_message_enter_container(message, 'a', "(st)");
761 if (r < 0)
762 return r;
763
764 while ((r = sd_bus_message_read(message, "(st)", &path, &u64)) > 0) {
765
766 if (!path_is_normalized(path))
767 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path '%s' specified in %s= is not normalized.", name, path);
768
769 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
770 CGroupIODeviceLimit *a = NULL, *b;
771
772 LIST_FOREACH(device_limits, b, c->io_device_limits) {
773 if (path_equal(path, b->path)) {
774 a = b;
775 break;
776 }
777 }
778
779 if (!a) {
780 CGroupIOLimitType type;
781
782 a = new0(CGroupIODeviceLimit, 1);
783 if (!a)
784 return -ENOMEM;
785
786 a->path = strdup(path);
787 if (!a->path) {
788 free(a);
789 return -ENOMEM;
790 }
791
792 for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++)
793 a->limits[type] = cgroup_io_limit_defaults[type];
794
795 LIST_PREPEND(device_limits, c->io_device_limits, a);
796 }
797
798 a->limits[iol_type] = u64;
799 }
800
801 n++;
802 }
803 if (r < 0)
804 return r;
805
806 r = sd_bus_message_exit_container(message);
807 if (r < 0)
808 return r;
809
810 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
811 CGroupIODeviceLimit *a;
812 _cleanup_free_ char *buf = NULL;
813 _cleanup_fclose_ FILE *f = NULL;
814 size_t size = 0;
815
816 if (n == 0) {
817 LIST_FOREACH(device_limits, a, c->io_device_limits)
818 a->limits[iol_type] = cgroup_io_limit_defaults[iol_type];
819 }
820
821 unit_invalidate_cgroup(u, CGROUP_MASK_IO);
822
823 f = open_memstream_unlocked(&buf, &size);
824 if (!f)
825 return -ENOMEM;
826
827 fprintf(f, "%s=\n", name);
828 LIST_FOREACH(device_limits, a, c->io_device_limits)
829 if (a->limits[iol_type] != cgroup_io_limit_defaults[iol_type])
830 fprintf(f, "%s=%s %" PRIu64 "\n", name, a->path, a->limits[iol_type]);
831
832 r = fflush_and_check(f);
833 if (r < 0)
834 return r;
835 unit_write_setting(u, flags, name, buf);
836 }
837
838 return 1;
839
840 } else if (streq(name, "IODeviceWeight")) {
841 const char *path;
842 uint64_t weight;
843 unsigned n = 0;
844
845 r = sd_bus_message_enter_container(message, 'a', "(st)");
846 if (r < 0)
847 return r;
848
849 while ((r = sd_bus_message_read(message, "(st)", &path, &weight)) > 0) {
850
851 if (!path_is_normalized(path))
852 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path '%s' specified in %s= is not normalized.", name, path);
853
854 if (!CGROUP_WEIGHT_IS_OK(weight) || weight == CGROUP_WEIGHT_INVALID)
855 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "IODeviceWeight= value out of range");
856
857 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
858 CGroupIODeviceWeight *a = NULL, *b;
859
860 LIST_FOREACH(device_weights, b, c->io_device_weights) {
861 if (path_equal(b->path, path)) {
862 a = b;
863 break;
864 }
865 }
866
867 if (!a) {
868 a = new0(CGroupIODeviceWeight, 1);
869 if (!a)
870 return -ENOMEM;
871
872 a->path = strdup(path);
873 if (!a->path) {
874 free(a);
875 return -ENOMEM;
876 }
877 LIST_PREPEND(device_weights, c->io_device_weights, a);
878 }
879
880 a->weight = weight;
881 }
882
883 n++;
884 }
885
886 r = sd_bus_message_exit_container(message);
887 if (r < 0)
888 return r;
889
890 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
891 _cleanup_free_ char *buf = NULL;
892 _cleanup_fclose_ FILE *f = NULL;
893 CGroupIODeviceWeight *a;
894 size_t size = 0;
895
896 if (n == 0) {
897 while (c->io_device_weights)
898 cgroup_context_free_io_device_weight(c, c->io_device_weights);
899 }
900
901 unit_invalidate_cgroup(u, CGROUP_MASK_IO);
902
903 f = open_memstream_unlocked(&buf, &size);
904 if (!f)
905 return -ENOMEM;
906
907 fputs("IODeviceWeight=\n", f);
908 LIST_FOREACH(device_weights, a, c->io_device_weights)
909 fprintf(f, "IODeviceWeight=%s %" PRIu64 "\n", a->path, a->weight);
910
911 r = fflush_and_check(f);
912 if (r < 0)
913 return r;
914 unit_write_setting(u, flags, name, buf);
915 }
916
917 return 1;
918
919 } else if (streq(name, "IODeviceLatencyTargetUSec")) {
920 const char *path;
921 uint64_t target;
922 unsigned n = 0;
923
924 r = sd_bus_message_enter_container(message, 'a', "(st)");
925 if (r < 0)
926 return r;
927
928 while ((r = sd_bus_message_read(message, "(st)", &path, &target)) > 0) {
929
930 if (!path_is_normalized(path))
931 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path '%s' specified in %s= is not normalized.", name, path);
932
933 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
934 CGroupIODeviceLatency *a = NULL, *b;
935
936 LIST_FOREACH(device_latencies, b, c->io_device_latencies) {
937 if (path_equal(b->path, path)) {
938 a = b;
939 break;
940 }
941 }
942
943 if (!a) {
944 a = new0(CGroupIODeviceLatency, 1);
945 if (!a)
946 return -ENOMEM;
947
948 a->path = strdup(path);
949 if (!a->path) {
950 free(a);
951 return -ENOMEM;
952 }
953 LIST_PREPEND(device_latencies, c->io_device_latencies, a);
954 }
955
956 a->target_usec = target;
957 }
958
959 n++;
960 }
961
962 r = sd_bus_message_exit_container(message);
963 if (r < 0)
964 return r;
965
966 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
967 _cleanup_free_ char *buf = NULL;
968 _cleanup_fclose_ FILE *f = NULL;
969 char ts[FORMAT_TIMESPAN_MAX];
970 CGroupIODeviceLatency *a;
971 size_t size = 0;
972
973 if (n == 0) {
974 while (c->io_device_latencies)
975 cgroup_context_free_io_device_latency(c, c->io_device_latencies);
976 }
977
978 unit_invalidate_cgroup(u, CGROUP_MASK_IO);
979
980 f = open_memstream_unlocked(&buf, &size);
981 if (!f)
982 return -ENOMEM;
983
984 fputs("IODeviceLatencyTargetSec=\n", f);
985 LIST_FOREACH(device_latencies, a, c->io_device_latencies)
986 fprintf(f, "IODeviceLatencyTargetSec=%s %s\n",
987 a->path, format_timespan(ts, sizeof(ts), a->target_usec, 1));
988
989 r = fflush_and_check(f);
990 if (r < 0)
991 return r;
992 unit_write_setting(u, flags, name, buf);
993 }
994
995 return 1;
996
997 } else if (STR_IN_SET(name, "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) {
998 const char *path;
999 bool read = true;
1000 unsigned n = 0;
1001 uint64_t u64;
1002
1003 if (streq(name, "BlockIOWriteBandwidth"))
1004 read = false;
1005
1006 r = sd_bus_message_enter_container(message, 'a', "(st)");
1007 if (r < 0)
1008 return r;
1009
1010 while ((r = sd_bus_message_read(message, "(st)", &path, &u64)) > 0) {
1011
1012 if (!path_is_normalized(path))
1013 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path '%s' specified in %s= is not normalized.", name, path);
1014
1015 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1016 CGroupBlockIODeviceBandwidth *a = NULL, *b;
1017
1018 LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
1019 if (path_equal(path, b->path)) {
1020 a = b;
1021 break;
1022 }
1023 }
1024
1025 if (!a) {
1026 a = new0(CGroupBlockIODeviceBandwidth, 1);
1027 if (!a)
1028 return -ENOMEM;
1029
1030 a->rbps = CGROUP_LIMIT_MAX;
1031 a->wbps = CGROUP_LIMIT_MAX;
1032 a->path = strdup(path);
1033 if (!a->path) {
1034 free(a);
1035 return -ENOMEM;
1036 }
1037
1038 LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, a);
1039 }
1040
1041 if (read)
1042 a->rbps = u64;
1043 else
1044 a->wbps = u64;
1045 }
1046
1047 n++;
1048 }
1049 if (r < 0)
1050 return r;
1051
1052 r = sd_bus_message_exit_container(message);
1053 if (r < 0)
1054 return r;
1055
1056 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1057 CGroupBlockIODeviceBandwidth *a;
1058 _cleanup_free_ char *buf = NULL;
1059 _cleanup_fclose_ FILE *f = NULL;
1060 size_t size = 0;
1061
1062 if (n == 0) {
1063 LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths) {
1064 if (read)
1065 a->rbps = CGROUP_LIMIT_MAX;
1066 else
1067 a->wbps = CGROUP_LIMIT_MAX;
1068 }
1069 }
1070
1071 unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
1072
1073 f = open_memstream_unlocked(&buf, &size);
1074 if (!f)
1075 return -ENOMEM;
1076
1077 if (read) {
1078 fputs("BlockIOReadBandwidth=\n", f);
1079 LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths)
1080 if (a->rbps != CGROUP_LIMIT_MAX)
1081 fprintf(f, "BlockIOReadBandwidth=%s %" PRIu64 "\n", a->path, a->rbps);
1082 } else {
1083 fputs("BlockIOWriteBandwidth=\n", f);
1084 LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths)
1085 if (a->wbps != CGROUP_LIMIT_MAX)
1086 fprintf(f, "BlockIOWriteBandwidth=%s %" PRIu64 "\n", a->path, a->wbps);
1087 }
1088
1089 r = fflush_and_check(f);
1090 if (r < 0)
1091 return r;
1092
1093 unit_write_setting(u, flags, name, buf);
1094 }
1095
1096 return 1;
1097
1098 } else if (streq(name, "BlockIODeviceWeight")) {
1099 const char *path;
1100 uint64_t weight;
1101 unsigned n = 0;
1102
1103 r = sd_bus_message_enter_container(message, 'a', "(st)");
1104 if (r < 0)
1105 return r;
1106
1107 while ((r = sd_bus_message_read(message, "(st)", &path, &weight)) > 0) {
1108
1109 if (!path_is_normalized(path))
1110 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path '%s' specified in %s= is not normalized.", name, path);
1111
1112 if (!CGROUP_BLKIO_WEIGHT_IS_OK(weight) || weight == CGROUP_BLKIO_WEIGHT_INVALID)
1113 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "BlockIODeviceWeight= out of range");
1114
1115 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1116 CGroupBlockIODeviceWeight *a = NULL, *b;
1117
1118 LIST_FOREACH(device_weights, b, c->blockio_device_weights) {
1119 if (path_equal(b->path, path)) {
1120 a = b;
1121 break;
1122 }
1123 }
1124
1125 if (!a) {
1126 a = new0(CGroupBlockIODeviceWeight, 1);
1127 if (!a)
1128 return -ENOMEM;
1129
1130 a->path = strdup(path);
1131 if (!a->path) {
1132 free(a);
1133 return -ENOMEM;
1134 }
1135 LIST_PREPEND(device_weights, c->blockio_device_weights, a);
1136 }
1137
1138 a->weight = weight;
1139 }
1140
1141 n++;
1142 }
1143
1144 r = sd_bus_message_exit_container(message);
1145 if (r < 0)
1146 return r;
1147
1148 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1149 _cleanup_free_ char *buf = NULL;
1150 _cleanup_fclose_ FILE *f = NULL;
1151 CGroupBlockIODeviceWeight *a;
1152 size_t size = 0;
1153
1154 if (n == 0) {
1155 while (c->blockio_device_weights)
1156 cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
1157 }
1158
1159 unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
1160
1161 f = open_memstream_unlocked(&buf, &size);
1162 if (!f)
1163 return -ENOMEM;
1164
1165 fputs("BlockIODeviceWeight=\n", f);
1166 LIST_FOREACH(device_weights, a, c->blockio_device_weights)
1167 fprintf(f, "BlockIODeviceWeight=%s %" PRIu64 "\n", a->path, a->weight);
1168
1169 r = fflush_and_check(f);
1170 if (r < 0)
1171 return r;
1172
1173 unit_write_setting(u, flags, name, buf);
1174 }
1175
1176 return 1;
1177
1178 } else if (streq(name, "DevicePolicy")) {
1179 const char *policy;
1180 CGroupDevicePolicy p;
1181
1182 r = sd_bus_message_read(message, "s", &policy);
1183 if (r < 0)
1184 return r;
1185
1186 p = cgroup_device_policy_from_string(policy);
1187 if (p < 0)
1188 return -EINVAL;
1189
1190 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1191 c->device_policy = p;
1192 unit_invalidate_cgroup(u, CGROUP_MASK_DEVICES);
1193 unit_write_settingf(u, flags, name, "DevicePolicy=%s", policy);
1194 }
1195
1196 return 1;
1197
1198 } else if (streq(name, "DeviceAllow")) {
1199 const char *path, *rwm;
1200 unsigned n = 0;
1201
1202 r = sd_bus_message_enter_container(message, 'a', "(ss)");
1203 if (r < 0)
1204 return r;
1205
1206 while ((r = sd_bus_message_read(message, "(ss)", &path, &rwm)) > 0) {
1207
1208 if (!valid_device_allow_pattern(path) || strpbrk(path, WHITESPACE))
1209 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "DeviceAllow= requires device node or pattern");
1210
1211 if (isempty(rwm))
1212 rwm = "rwm";
1213 else if (!in_charset(rwm, "rwm"))
1214 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "DeviceAllow= requires combination of rwm flags");
1215
1216 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1217 CGroupDeviceAllow *a = NULL, *b;
1218
1219 LIST_FOREACH(device_allow, b, c->device_allow) {
1220 if (path_equal(b->path, path)) {
1221 a = b;
1222 break;
1223 }
1224 }
1225
1226 if (!a) {
1227 a = new0(CGroupDeviceAllow, 1);
1228 if (!a)
1229 return -ENOMEM;
1230
1231 a->path = strdup(path);
1232 if (!a->path) {
1233 free(a);
1234 return -ENOMEM;
1235 }
1236
1237 LIST_PREPEND(device_allow, c->device_allow, a);
1238 }
1239
1240 a->r = !!strchr(rwm, 'r');
1241 a->w = !!strchr(rwm, 'w');
1242 a->m = !!strchr(rwm, 'm');
1243 }
1244
1245 n++;
1246 }
1247 if (r < 0)
1248 return r;
1249
1250 r = sd_bus_message_exit_container(message);
1251 if (r < 0)
1252 return r;
1253
1254 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1255 _cleanup_free_ char *buf = NULL;
1256 _cleanup_fclose_ FILE *f = NULL;
1257 CGroupDeviceAllow *a;
1258 size_t size = 0;
1259
1260 if (n == 0) {
1261 while (c->device_allow)
1262 cgroup_context_free_device_allow(c, c->device_allow);
1263 }
1264
1265 unit_invalidate_cgroup(u, CGROUP_MASK_DEVICES);
1266
1267 f = open_memstream_unlocked(&buf, &size);
1268 if (!f)
1269 return -ENOMEM;
1270
1271 fputs("DeviceAllow=\n", f);
1272 LIST_FOREACH(device_allow, a, c->device_allow)
1273 fprintf(f, "DeviceAllow=%s %s%s%s\n", a->path, a->r ? "r" : "", a->w ? "w" : "", a->m ? "m" : "");
1274
1275 r = fflush_and_check(f);
1276 if (r < 0)
1277 return r;
1278 unit_write_setting(u, flags, name, buf);
1279 }
1280
1281 return 1;
1282
1283 } else if (streq(name, "IPAccounting")) {
1284 int b;
1285
1286 r = sd_bus_message_read(message, "b", &b);
1287 if (r < 0)
1288 return r;
1289
1290 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1291 c->ip_accounting = b;
1292
1293 unit_invalidate_cgroup_bpf(u);
1294 unit_write_settingf(u, flags, name, "IPAccounting=%s", yes_no(b));
1295 }
1296
1297 return 1;
1298
1299 } else if (STR_IN_SET(name, "IPAddressAllow", "IPAddressDeny")) {
1300 IPAddressAccessItem **list;
1301 size_t n = 0;
1302
1303 list = streq(name, "IPAddressAllow") ? &c->ip_address_allow : &c->ip_address_deny;
1304
1305 r = sd_bus_message_enter_container(message, 'a', "(iayu)");
1306 if (r < 0)
1307 return r;
1308
1309 for (;;) {
1310 const void *ap;
1311 int32_t family;
1312 uint32_t prefixlen;
1313 size_t an;
1314
1315 r = sd_bus_message_enter_container(message, 'r', "iayu");
1316 if (r < 0)
1317 return r;
1318 if (r == 0)
1319 break;
1320
1321 r = sd_bus_message_read(message, "i", &family);
1322 if (r < 0)
1323 return r;
1324
1325 if (!IN_SET(family, AF_INET, AF_INET6))
1326 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "%s= expects IPv4 or IPv6 addresses only.", name);
1327
1328 r = sd_bus_message_read_array(message, 'y', &ap, &an);
1329 if (r < 0)
1330 return r;
1331
1332 if (an != FAMILY_ADDRESS_SIZE(family))
1333 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "IP address has wrong size for family (%s, expected %zu, got %zu)",
1334 af_to_name(family), FAMILY_ADDRESS_SIZE(family), an);
1335
1336 r = sd_bus_message_read(message, "u", &prefixlen);
1337 if (r < 0)
1338 return r;
1339
1340 if (prefixlen > FAMILY_ADDRESS_SIZE(family)*8)
1341 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Prefix length %" PRIu32 " too large for address family %s.", prefixlen, af_to_name(family));
1342
1343 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1344 IPAddressAccessItem *item;
1345
1346 item = new0(IPAddressAccessItem, 1);
1347 if (!item)
1348 return -ENOMEM;
1349
1350 item->family = family;
1351 item->prefixlen = prefixlen;
1352 memcpy(&item->address, ap, an);
1353
1354 LIST_PREPEND(items, *list, item);
1355 }
1356
1357 r = sd_bus_message_exit_container(message);
1358 if (r < 0)
1359 return r;
1360
1361 n++;
1362 }
1363
1364 r = sd_bus_message_exit_container(message);
1365 if (r < 0)
1366 return r;
1367
1368 *list = ip_address_access_reduce(*list);
1369
1370 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
1371 _cleanup_free_ char *buf = NULL;
1372 _cleanup_fclose_ FILE *f = NULL;
1373 IPAddressAccessItem *item;
1374 size_t size = 0;
1375
1376 if (n == 0)
1377 *list = ip_address_access_free_all(*list);
1378
1379 unit_invalidate_cgroup_bpf(u);
1380 f = open_memstream_unlocked(&buf, &size);
1381 if (!f)
1382 return -ENOMEM;
1383
1384 fputs(name, f);
1385 fputs("=\n", f);
1386
1387 LIST_FOREACH(items, item, *list) {
1388 char buffer[CONST_MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN)];
1389
1390 errno = 0;
1391 if (!inet_ntop(item->family, &item->address, buffer, sizeof(buffer)))
1392 return errno > 0 ? -errno : -EINVAL;
1393
1394 fprintf(f, "%s=%s/%u\n", name, buffer, item->prefixlen);
1395 }
1396
1397 r = fflush_and_check(f);
1398 if (r < 0)
1399 return r;
1400
1401 unit_write_setting(u, flags, name, buf);
1402
1403 if (*list) {
1404 r = bpf_firewall_supported();
1405 if (r < 0)
1406 return r;
1407 if (r == BPF_FIREWALL_UNSUPPORTED) {
1408 static bool warned = false;
1409
1410 log_full(warned ? LOG_DEBUG : LOG_WARNING,
1411 "Transient unit %s configures an IP firewall, but the local system does not support BPF/cgroup firewalling.\n"
1412 "Proceeding WITHOUT firewalling in effect! (This warning is only shown for the first started transient unit using IP firewalling.)", u->id);
1413
1414 warned = true;
1415 }
1416 }
1417 }
1418
1419 return 1;
1420 }
1421
1422 if (u->transient && u->load_state == UNIT_STUB)
1423 return bus_cgroup_set_transient_property(u, c, name, message, flags, error);
1424
1425 return 0;
1426 }
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