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89489ef7 TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include <netinet/in.h> | |
30746d60 | 21 | #include <linux/if_addrlabel.h> |
89489ef7 TG |
22 | #include <stdbool.h> |
23 | #include <unistd.h> | |
24 | ||
07630cea LP |
25 | #include "sd-netlink.h" |
26 | ||
f97b34a6 | 27 | #include "format-util.h" |
89489ef7 | 28 | #include "missing.h" |
89489ef7 TG |
29 | #include "netlink-internal.h" |
30 | #include "netlink-types.h" | |
07630cea LP |
31 | #include "netlink-util.h" |
32 | #include "refcnt.h" | |
33 | #include "socket-util.h" | |
34 | #include "util.h" | |
89489ef7 TG |
35 | |
36 | int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
37 | struct rtmsg *rtm; | |
38 | ||
39 | assert_return(m, -EINVAL); | |
40 | assert_return(m->hdr, -EINVAL); | |
41 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
42 | ||
43 | rtm = NLMSG_DATA(m->hdr); | |
44 | ||
45 | if ((rtm->rtm_family == AF_INET && prefixlen > 32) || | |
46 | (rtm->rtm_family == AF_INET6 && prefixlen > 128)) | |
47 | return -ERANGE; | |
48 | ||
49 | rtm->rtm_dst_len = prefixlen; | |
50 | ||
51 | return 0; | |
52 | } | |
53 | ||
54 | int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
55 | struct rtmsg *rtm; | |
56 | ||
57 | assert_return(m, -EINVAL); | |
58 | assert_return(m->hdr, -EINVAL); | |
59 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
60 | ||
61 | rtm = NLMSG_DATA(m->hdr); | |
62 | ||
63 | if ((rtm->rtm_family == AF_INET && prefixlen > 32) || | |
64 | (rtm->rtm_family == AF_INET6 && prefixlen > 128)) | |
65 | return -ERANGE; | |
66 | ||
67 | rtm->rtm_src_len = prefixlen; | |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
72 | int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope) { | |
73 | struct rtmsg *rtm; | |
74 | ||
75 | assert_return(m, -EINVAL); | |
76 | assert_return(m->hdr, -EINVAL); | |
77 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
78 | ||
79 | rtm = NLMSG_DATA(m->hdr); | |
80 | ||
81 | rtm->rtm_scope = scope; | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
6b9e85a7 TG |
86 | int sd_rtnl_message_route_set_flags(sd_netlink_message *m, unsigned flags) { |
87 | struct rtmsg *rtm; | |
88 | ||
89 | assert_return(m, -EINVAL); | |
90 | assert_return(m->hdr, -EINVAL); | |
91 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
92 | ||
93 | rtm = NLMSG_DATA(m->hdr); | |
94 | ||
95 | rtm->rtm_flags = flags; | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | int sd_rtnl_message_route_get_flags(sd_netlink_message *m, unsigned *flags) { | |
101 | struct rtmsg *rtm; | |
102 | ||
103 | assert_return(m, -EINVAL); | |
104 | assert_return(m->hdr, -EINVAL); | |
105 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
106 | assert_return(flags, -EINVAL); | |
107 | ||
108 | rtm = NLMSG_DATA(m->hdr); | |
109 | ||
110 | *flags = rtm->rtm_flags; | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
ec1bb279 SS |
115 | int sd_rtnl_message_route_set_table(sd_netlink_message *m, unsigned char table) { |
116 | struct rtmsg *rtm; | |
117 | ||
118 | assert_return(m, -EINVAL); | |
119 | assert_return(m->hdr, -EINVAL); | |
120 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
121 | ||
122 | rtm = NLMSG_DATA(m->hdr); | |
123 | ||
124 | rtm->rtm_table = table; | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
89489ef7 TG |
129 | int sd_rtnl_message_route_get_family(sd_netlink_message *m, int *family) { |
130 | struct rtmsg *rtm; | |
131 | ||
132 | assert_return(m, -EINVAL); | |
133 | assert_return(m->hdr, -EINVAL); | |
134 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
135 | assert_return(family, -EINVAL); | |
136 | ||
137 | rtm = NLMSG_DATA(m->hdr); | |
138 | ||
139 | *family = rtm->rtm_family; | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
ec1bb279 SS |
144 | int sd_rtnl_message_route_set_family(sd_netlink_message *m, int family) { |
145 | struct rtmsg *rtm; | |
146 | ||
147 | assert_return(m, -EINVAL); | |
148 | assert_return(m->hdr, -EINVAL); | |
149 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
150 | ||
151 | rtm = NLMSG_DATA(m->hdr); | |
152 | ||
153 | rtm->rtm_family = family; | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
ad70f789 TG |
158 | int sd_rtnl_message_route_get_protocol(sd_netlink_message *m, unsigned char *protocol) { |
159 | struct rtmsg *rtm; | |
160 | ||
161 | assert_return(m, -EINVAL); | |
162 | assert_return(m->hdr, -EINVAL); | |
163 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
164 | assert_return(protocol, -EINVAL); | |
165 | ||
166 | rtm = NLMSG_DATA(m->hdr); | |
167 | ||
168 | *protocol = rtm->rtm_protocol; | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | int sd_rtnl_message_route_get_scope(sd_netlink_message *m, unsigned char *scope) { | |
174 | struct rtmsg *rtm; | |
175 | ||
176 | assert_return(m, -EINVAL); | |
177 | assert_return(m->hdr, -EINVAL); | |
178 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
179 | assert_return(scope, -EINVAL); | |
180 | ||
181 | rtm = NLMSG_DATA(m->hdr); | |
182 | ||
183 | *scope = rtm->rtm_scope; | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | int sd_rtnl_message_route_get_tos(sd_netlink_message *m, unsigned char *tos) { | |
189 | struct rtmsg *rtm; | |
190 | ||
191 | assert_return(m, -EINVAL); | |
192 | assert_return(m->hdr, -EINVAL); | |
193 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
194 | assert_return(tos, -EINVAL); | |
195 | ||
196 | rtm = NLMSG_DATA(m->hdr); | |
197 | ||
198 | *tos = rtm->rtm_tos; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | int sd_rtnl_message_route_get_table(sd_netlink_message *m, unsigned char *table) { | |
204 | struct rtmsg *rtm; | |
205 | ||
206 | assert_return(m, -EINVAL); | |
207 | assert_return(m->hdr, -EINVAL); | |
208 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
209 | assert_return(table, -EINVAL); | |
210 | ||
211 | rtm = NLMSG_DATA(m->hdr); | |
212 | ||
213 | *table = rtm->rtm_table; | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
89489ef7 TG |
218 | int sd_rtnl_message_route_get_dst_prefixlen(sd_netlink_message *m, unsigned char *dst_len) { |
219 | struct rtmsg *rtm; | |
220 | ||
221 | assert_return(m, -EINVAL); | |
222 | assert_return(m->hdr, -EINVAL); | |
223 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
224 | assert_return(dst_len, -EINVAL); | |
225 | ||
226 | rtm = NLMSG_DATA(m->hdr); | |
227 | ||
228 | *dst_len = rtm->rtm_dst_len; | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | int sd_rtnl_message_route_get_src_prefixlen(sd_netlink_message *m, unsigned char *src_len) { | |
234 | struct rtmsg *rtm; | |
235 | ||
236 | assert_return(m, -EINVAL); | |
237 | assert_return(m->hdr, -EINVAL); | |
238 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
239 | assert_return(src_len, -EINVAL); | |
240 | ||
241 | rtm = NLMSG_DATA(m->hdr); | |
242 | ||
243 | *src_len = rtm->rtm_src_len; | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | int sd_rtnl_message_new_route(sd_netlink *rtnl, sd_netlink_message **ret, | |
249 | uint16_t nlmsg_type, int rtm_family, | |
250 | unsigned char rtm_protocol) { | |
251 | struct rtmsg *rtm; | |
252 | int r; | |
253 | ||
254 | assert_return(rtnl_message_type_is_route(nlmsg_type), -EINVAL); | |
255 | assert_return((nlmsg_type == RTM_GETROUTE && rtm_family == AF_UNSPEC) || | |
256 | rtm_family == AF_INET || rtm_family == AF_INET6, -EINVAL); | |
257 | assert_return(ret, -EINVAL); | |
258 | ||
259 | r = message_new(rtnl, ret, nlmsg_type); | |
260 | if (r < 0) | |
261 | return r; | |
262 | ||
263 | if (nlmsg_type == RTM_NEWROUTE) | |
264 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND; | |
265 | ||
266 | rtm = NLMSG_DATA((*ret)->hdr); | |
267 | ||
268 | rtm->rtm_family = rtm_family; | |
269 | rtm->rtm_scope = RT_SCOPE_UNIVERSE; | |
270 | rtm->rtm_type = RTN_UNICAST; | |
271 | rtm->rtm_table = RT_TABLE_MAIN; | |
272 | rtm->rtm_protocol = rtm_protocol; | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags) { | |
278 | struct ndmsg *ndm; | |
279 | ||
280 | assert_return(m, -EINVAL); | |
281 | assert_return(m->hdr, -EINVAL); | |
282 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
283 | ||
284 | ndm = NLMSG_DATA(m->hdr); | |
285 | ndm->ndm_flags |= flags; | |
286 | ||
287 | return 0; | |
288 | } | |
289 | ||
290 | int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state) { | |
291 | struct ndmsg *ndm; | |
292 | ||
293 | assert_return(m, -EINVAL); | |
294 | assert_return(m->hdr, -EINVAL); | |
295 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
296 | ||
297 | ndm = NLMSG_DATA(m->hdr); | |
298 | ndm->ndm_state |= state; | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags) { | |
304 | struct ndmsg *ndm; | |
305 | ||
306 | assert_return(m, -EINVAL); | |
307 | assert_return(m->hdr, -EINVAL); | |
308 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
309 | ||
310 | ndm = NLMSG_DATA(m->hdr); | |
311 | *flags = ndm->ndm_flags; | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
316 | int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state) { | |
317 | struct ndmsg *ndm; | |
318 | ||
319 | assert_return(m, -EINVAL); | |
320 | assert_return(m->hdr, -EINVAL); | |
321 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
322 | ||
323 | ndm = NLMSG_DATA(m->hdr); | |
324 | *state = ndm->ndm_state; | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | int sd_rtnl_message_neigh_get_family(sd_netlink_message *m, int *family) { | |
330 | struct ndmsg *ndm; | |
331 | ||
332 | assert_return(m, -EINVAL); | |
333 | assert_return(m->hdr, -EINVAL); | |
334 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
335 | assert_return(family, -EINVAL); | |
336 | ||
337 | ndm = NLMSG_DATA(m->hdr); | |
338 | ||
339 | *family = ndm->ndm_family; | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *index) { | |
345 | struct ndmsg *ndm; | |
346 | ||
347 | assert_return(m, -EINVAL); | |
348 | assert_return(m->hdr, -EINVAL); | |
349 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
350 | assert_return(index, -EINVAL); | |
351 | ||
352 | ndm = NLMSG_DATA(m->hdr); | |
353 | ||
354 | *index = ndm->ndm_ifindex; | |
355 | ||
356 | return 0; | |
357 | } | |
358 | ||
359 | int sd_rtnl_message_new_neigh(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int index, int ndm_family) { | |
360 | struct ndmsg *ndm; | |
361 | int r; | |
362 | ||
363 | assert_return(rtnl_message_type_is_neigh(nlmsg_type), -EINVAL); | |
364 | assert_return(ndm_family == AF_INET || | |
365 | ndm_family == AF_INET6 || | |
366 | ndm_family == PF_BRIDGE, -EINVAL); | |
367 | assert_return(ret, -EINVAL); | |
368 | ||
369 | r = message_new(rtnl, ret, nlmsg_type); | |
370 | if (r < 0) | |
371 | return r; | |
372 | ||
373 | if (nlmsg_type == RTM_NEWNEIGH) | |
374 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND; | |
375 | ||
376 | ndm = NLMSG_DATA((*ret)->hdr); | |
377 | ||
378 | ndm->ndm_family = ndm_family; | |
379 | ndm->ndm_ifindex = index; | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
384 | int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change) { | |
385 | struct ifinfomsg *ifi; | |
386 | ||
387 | assert_return(m, -EINVAL); | |
388 | assert_return(m->hdr, -EINVAL); | |
389 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
390 | assert_return(change, -EINVAL); | |
391 | ||
392 | ifi = NLMSG_DATA(m->hdr); | |
393 | ||
394 | ifi->ifi_flags = flags; | |
395 | ifi->ifi_change = change; | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type) { | |
401 | struct ifinfomsg *ifi; | |
402 | ||
403 | assert_return(m, -EINVAL); | |
404 | assert_return(m->hdr, -EINVAL); | |
405 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
406 | ||
407 | ifi = NLMSG_DATA(m->hdr); | |
408 | ||
409 | ifi->ifi_type = type; | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family) { | |
415 | struct ifinfomsg *ifi; | |
416 | ||
417 | assert_return(m, -EINVAL); | |
418 | assert_return(m->hdr, -EINVAL); | |
419 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
420 | ||
421 | ifi = NLMSG_DATA(m->hdr); | |
422 | ||
423 | ifi->ifi_family = family; | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | int sd_rtnl_message_new_link(sd_netlink *rtnl, sd_netlink_message **ret, | |
429 | uint16_t nlmsg_type, int index) { | |
430 | struct ifinfomsg *ifi; | |
431 | int r; | |
432 | ||
433 | assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL); | |
89489ef7 TG |
434 | assert_return(ret, -EINVAL); |
435 | ||
436 | r = message_new(rtnl, ret, nlmsg_type); | |
437 | if (r < 0) | |
438 | return r; | |
439 | ||
440 | if (nlmsg_type == RTM_NEWLINK) | |
441 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL; | |
442 | ||
443 | ifi = NLMSG_DATA((*ret)->hdr); | |
444 | ||
445 | ifi->ifi_family = AF_UNSPEC; | |
446 | ifi->ifi_index = index; | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
452 | struct ifaddrmsg *ifa; | |
453 | ||
454 | assert_return(m, -EINVAL); | |
455 | assert_return(m->hdr, -EINVAL); | |
456 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
457 | ||
458 | ifa = NLMSG_DATA(m->hdr); | |
459 | ||
460 | if ((ifa->ifa_family == AF_INET && prefixlen > 32) || | |
461 | (ifa->ifa_family == AF_INET6 && prefixlen > 128)) | |
462 | return -ERANGE; | |
463 | ||
464 | ifa->ifa_prefixlen = prefixlen; | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags) { | |
470 | struct ifaddrmsg *ifa; | |
471 | ||
472 | assert_return(m, -EINVAL); | |
473 | assert_return(m->hdr, -EINVAL); | |
474 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
475 | ||
476 | ifa = NLMSG_DATA(m->hdr); | |
477 | ||
478 | ifa->ifa_flags = flags; | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope) { | |
484 | struct ifaddrmsg *ifa; | |
485 | ||
486 | assert_return(m, -EINVAL); | |
487 | assert_return(m->hdr, -EINVAL); | |
488 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
489 | ||
490 | ifa = NLMSG_DATA(m->hdr); | |
491 | ||
492 | ifa->ifa_scope = scope; | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | int sd_rtnl_message_addr_get_family(sd_netlink_message *m, int *family) { | |
498 | struct ifaddrmsg *ifa; | |
499 | ||
500 | assert_return(m, -EINVAL); | |
501 | assert_return(m->hdr, -EINVAL); | |
502 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
503 | assert_return(family, -EINVAL); | |
504 | ||
505 | ifa = NLMSG_DATA(m->hdr); | |
506 | ||
507 | *family = ifa->ifa_family; | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
512 | int sd_rtnl_message_addr_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen) { | |
513 | struct ifaddrmsg *ifa; | |
514 | ||
515 | assert_return(m, -EINVAL); | |
516 | assert_return(m->hdr, -EINVAL); | |
517 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
518 | assert_return(prefixlen, -EINVAL); | |
519 | ||
520 | ifa = NLMSG_DATA(m->hdr); | |
521 | ||
522 | *prefixlen = ifa->ifa_prefixlen; | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | int sd_rtnl_message_addr_get_scope(sd_netlink_message *m, unsigned char *scope) { | |
528 | struct ifaddrmsg *ifa; | |
529 | ||
530 | assert_return(m, -EINVAL); | |
531 | assert_return(m->hdr, -EINVAL); | |
532 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
533 | assert_return(scope, -EINVAL); | |
534 | ||
535 | ifa = NLMSG_DATA(m->hdr); | |
536 | ||
537 | *scope = ifa->ifa_scope; | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | int sd_rtnl_message_addr_get_flags(sd_netlink_message *m, unsigned char *flags) { | |
543 | struct ifaddrmsg *ifa; | |
544 | ||
545 | assert_return(m, -EINVAL); | |
546 | assert_return(m->hdr, -EINVAL); | |
547 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
548 | assert_return(flags, -EINVAL); | |
549 | ||
550 | ifa = NLMSG_DATA(m->hdr); | |
551 | ||
552 | *flags = ifa->ifa_flags; | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | int sd_rtnl_message_addr_get_ifindex(sd_netlink_message *m, int *ifindex) { | |
558 | struct ifaddrmsg *ifa; | |
559 | ||
560 | assert_return(m, -EINVAL); | |
561 | assert_return(m->hdr, -EINVAL); | |
562 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
563 | assert_return(ifindex, -EINVAL); | |
564 | ||
565 | ifa = NLMSG_DATA(m->hdr); | |
566 | ||
567 | *ifindex = ifa->ifa_index; | |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
572 | int sd_rtnl_message_new_addr(sd_netlink *rtnl, sd_netlink_message **ret, | |
573 | uint16_t nlmsg_type, int index, | |
574 | int family) { | |
575 | struct ifaddrmsg *ifa; | |
576 | int r; | |
577 | ||
578 | assert_return(rtnl_message_type_is_addr(nlmsg_type), -EINVAL); | |
579 | assert_return((nlmsg_type == RTM_GETADDR && index == 0) || | |
580 | index > 0, -EINVAL); | |
581 | assert_return((nlmsg_type == RTM_GETADDR && family == AF_UNSPEC) || | |
582 | family == AF_INET || family == AF_INET6, -EINVAL); | |
583 | assert_return(ret, -EINVAL); | |
584 | ||
585 | r = message_new(rtnl, ret, nlmsg_type); | |
586 | if (r < 0) | |
587 | return r; | |
588 | ||
589 | if (nlmsg_type == RTM_GETADDR) | |
590 | (*ret)->hdr->nlmsg_flags |= NLM_F_DUMP; | |
591 | ||
592 | ifa = NLMSG_DATA((*ret)->hdr); | |
593 | ||
594 | ifa->ifa_index = index; | |
595 | ifa->ifa_family = family; | |
596 | if (family == AF_INET) | |
597 | ifa->ifa_prefixlen = 32; | |
598 | else if (family == AF_INET6) | |
599 | ifa->ifa_prefixlen = 128; | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
604 | int sd_rtnl_message_new_addr_update(sd_netlink *rtnl, sd_netlink_message **ret, | |
605 | int index, int family) { | |
606 | int r; | |
607 | ||
608 | r = sd_rtnl_message_new_addr(rtnl, ret, RTM_NEWADDR, index, family); | |
609 | if (r < 0) | |
610 | return r; | |
611 | ||
612 | (*ret)->hdr->nlmsg_flags |= NLM_F_REPLACE; | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | int sd_rtnl_message_link_get_ifindex(sd_netlink_message *m, int *ifindex) { | |
618 | struct ifinfomsg *ifi; | |
619 | ||
620 | assert_return(m, -EINVAL); | |
621 | assert_return(m->hdr, -EINVAL); | |
622 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
623 | assert_return(ifindex, -EINVAL); | |
624 | ||
625 | ifi = NLMSG_DATA(m->hdr); | |
626 | ||
627 | *ifindex = ifi->ifi_index; | |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | int sd_rtnl_message_link_get_flags(sd_netlink_message *m, unsigned *flags) { | |
633 | struct ifinfomsg *ifi; | |
634 | ||
635 | assert_return(m, -EINVAL); | |
636 | assert_return(m->hdr, -EINVAL); | |
637 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
638 | assert_return(flags, -EINVAL); | |
639 | ||
640 | ifi = NLMSG_DATA(m->hdr); | |
641 | ||
642 | *flags = ifi->ifi_flags; | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
1c4a6088 | 647 | int sd_rtnl_message_link_get_type(sd_netlink_message *m, unsigned short *type) { |
89489ef7 TG |
648 | struct ifinfomsg *ifi; |
649 | ||
650 | assert_return(m, -EINVAL); | |
651 | assert_return(m->hdr, -EINVAL); | |
652 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
653 | assert_return(type, -EINVAL); | |
654 | ||
655 | ifi = NLMSG_DATA(m->hdr); | |
656 | ||
657 | *type = ifi->ifi_type; | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
662 | int sd_rtnl_message_get_family(sd_netlink_message *m, int *family) { | |
663 | assert_return(m, -EINVAL); | |
664 | assert_return(family, -EINVAL); | |
665 | ||
666 | assert(m->hdr); | |
667 | ||
668 | if (rtnl_message_type_is_link(m->hdr->nlmsg_type)) { | |
669 | struct ifinfomsg *ifi; | |
670 | ||
671 | ifi = NLMSG_DATA(m->hdr); | |
672 | ||
673 | *family = ifi->ifi_family; | |
674 | ||
675 | return 0; | |
676 | } else if (rtnl_message_type_is_route(m->hdr->nlmsg_type)) { | |
677 | struct rtmsg *rtm; | |
678 | ||
679 | rtm = NLMSG_DATA(m->hdr); | |
680 | ||
681 | *family = rtm->rtm_family; | |
682 | ||
683 | return 0; | |
684 | } else if (rtnl_message_type_is_neigh(m->hdr->nlmsg_type)) { | |
685 | struct ndmsg *ndm; | |
686 | ||
687 | ndm = NLMSG_DATA(m->hdr); | |
688 | ||
689 | *family = ndm->ndm_family; | |
690 | ||
691 | return 0; | |
692 | } else if (rtnl_message_type_is_addr(m->hdr->nlmsg_type)) { | |
693 | struct ifaddrmsg *ifa; | |
694 | ||
695 | ifa = NLMSG_DATA(m->hdr); | |
696 | ||
697 | *family = ifa->ifa_family; | |
698 | ||
bce67bbe SS |
699 | return 0; |
700 | } else if (rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type)) { | |
701 | struct rtmsg *rtm; | |
702 | ||
703 | rtm = NLMSG_DATA(m->hdr); | |
704 | ||
705 | *family = rtm->rtm_family; | |
706 | ||
89489ef7 TG |
707 | return 0; |
708 | } | |
709 | ||
710 | return -EOPNOTSUPP; | |
711 | } | |
30746d60 SS |
712 | |
713 | int sd_rtnl_message_new_addrlabel(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifindex, int ifal_family) { | |
714 | struct ifaddrlblmsg *addrlabel; | |
715 | int r; | |
716 | ||
717 | assert_return(rtnl_message_type_is_addrlabel(nlmsg_type), -EINVAL); | |
718 | assert_return(ret, -EINVAL); | |
719 | ||
720 | r = message_new(rtnl, ret, nlmsg_type); | |
721 | if (r < 0) | |
722 | return r; | |
723 | ||
724 | if (nlmsg_type == RTM_NEWADDRLABEL) | |
725 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL; | |
726 | ||
727 | addrlabel = NLMSG_DATA((*ret)->hdr); | |
728 | ||
729 | addrlabel->ifal_family = ifal_family; | |
730 | addrlabel->ifal_index = ifindex; | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | int sd_rtnl_message_addrlabel_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
736 | struct ifaddrlblmsg *addrlabel; | |
737 | ||
738 | assert_return(m, -EINVAL); | |
739 | assert_return(m->hdr, -EINVAL); | |
740 | assert_return(rtnl_message_type_is_addrlabel(m->hdr->nlmsg_type), -EINVAL); | |
741 | ||
742 | addrlabel = NLMSG_DATA(m->hdr); | |
743 | ||
744 | if (prefixlen > 128) | |
745 | return -ERANGE; | |
746 | ||
747 | addrlabel->ifal_prefixlen = prefixlen; | |
748 | ||
749 | return 0; | |
750 | } | |
d37b7627 SS |
751 | |
752 | int sd_rtnl_message_addrlabel_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen) { | |
753 | struct ifaddrlblmsg *addrlabel; | |
754 | ||
755 | assert_return(m, -EINVAL); | |
756 | assert_return(m->hdr, -EINVAL); | |
757 | assert_return(rtnl_message_type_is_addrlabel(m->hdr->nlmsg_type), -EINVAL); | |
758 | ||
759 | addrlabel = NLMSG_DATA(m->hdr); | |
760 | ||
761 | *prefixlen = addrlabel->ifal_prefixlen; | |
762 | ||
763 | return 0; | |
764 | } | |
bce67bbe SS |
765 | |
766 | int sd_rtnl_message_new_routing_policy_rule(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifal_family) { | |
767 | struct rtmsg *rtm; | |
768 | int r; | |
769 | ||
770 | assert_return(rtnl_message_type_is_routing_policy_rule(nlmsg_type), -EINVAL); | |
771 | assert_return(ret, -EINVAL); | |
772 | ||
773 | r = message_new(rtnl, ret, nlmsg_type); | |
774 | if (r < 0) | |
775 | return r; | |
776 | ||
777 | if (nlmsg_type == RTM_NEWRULE) | |
778 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL; | |
779 | ||
780 | rtm = NLMSG_DATA((*ret)->hdr); | |
781 | rtm->rtm_family = ifal_family; | |
782 | rtm->rtm_protocol = RTPROT_BOOT; | |
783 | rtm->rtm_scope = RT_SCOPE_UNIVERSE; | |
784 | rtm->rtm_type = RTN_UNICAST; | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | int sd_rtnl_message_routing_policy_rule_set_tos(sd_netlink_message *m, unsigned char tos) { | |
790 | struct rtmsg *routing_policy_rule; | |
791 | ||
792 | assert_return(m, -EINVAL); | |
793 | assert_return(m->hdr, -EINVAL); | |
794 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
795 | ||
796 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
797 | ||
798 | routing_policy_rule->rtm_tos = tos; | |
799 | ||
800 | return 0; | |
801 | } | |
802 | ||
803 | int sd_rtnl_message_routing_policy_rule_get_tos(sd_netlink_message *m, unsigned char *tos) { | |
804 | struct rtmsg *routing_policy_rule; | |
805 | ||
806 | assert_return(m, -EINVAL); | |
807 | assert_return(m->hdr, -EINVAL); | |
808 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
809 | ||
810 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
811 | ||
812 | *tos = routing_policy_rule->rtm_tos; | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | int sd_rtnl_message_routing_policy_rule_set_table(sd_netlink_message *m, unsigned char table) { | |
818 | struct rtmsg *routing_policy_rule; | |
819 | ||
820 | assert_return(m, -EINVAL); | |
821 | assert_return(m->hdr, -EINVAL); | |
822 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
823 | ||
824 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
825 | ||
826 | routing_policy_rule->rtm_table = table; | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | int sd_rtnl_message_routing_policy_rule_get_table(sd_netlink_message *m, unsigned char *table) { | |
832 | struct rtmsg *routing_policy_rule; | |
833 | ||
834 | assert_return(m, -EINVAL); | |
835 | assert_return(m->hdr, -EINVAL); | |
836 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
837 | ||
838 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
839 | ||
840 | *table = routing_policy_rule->rtm_table; | |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
845 | int sd_rtnl_message_routing_policy_rule_set_rtm_type(sd_netlink_message *m, unsigned char type) { | |
846 | struct rtmsg *routing_policy_rule; | |
847 | ||
848 | assert_return(m, -EINVAL); | |
849 | assert_return(m->hdr, -EINVAL); | |
850 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
851 | ||
852 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
853 | ||
854 | routing_policy_rule->rtm_type = type; | |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | int sd_rtnl_message_routing_policy_rule_get_rtm_type(sd_netlink_message *m, unsigned char *type) { | |
860 | struct rtmsg *routing_policy_rule; | |
861 | ||
862 | assert_return(m, -EINVAL); | |
863 | assert_return(m->hdr, -EINVAL); | |
864 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
865 | ||
866 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
867 | ||
868 | *type = routing_policy_rule->rtm_type; | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | int sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(sd_netlink_message *m, unsigned char len) { | |
874 | struct rtmsg *routing_policy_rule; | |
875 | ||
876 | assert_return(m, -EINVAL); | |
877 | assert_return(m->hdr, -EINVAL); | |
878 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
879 | ||
880 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
881 | ||
882 | routing_policy_rule->rtm_dst_len = len; | |
883 | ||
884 | return 0; | |
885 | } | |
886 | ||
887 | int sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(sd_netlink_message *m, unsigned char *len) { | |
888 | struct rtmsg *routing_policy_rule; | |
889 | ||
890 | assert_return(m, -EINVAL); | |
891 | assert_return(m->hdr, -EINVAL); | |
892 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
893 | ||
894 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
895 | ||
896 | *len = routing_policy_rule->rtm_dst_len; | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
901 | int sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(sd_netlink_message *m, unsigned char len) { | |
902 | struct rtmsg *routing_policy_rule; | |
903 | ||
904 | assert_return(m, -EINVAL); | |
905 | assert_return(m->hdr, -EINVAL); | |
906 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
907 | ||
908 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
909 | ||
910 | routing_policy_rule->rtm_src_len = len; | |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | int sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(sd_netlink_message *m, unsigned char *len) { | |
916 | struct rtmsg *routing_policy_rule; | |
917 | ||
918 | assert_return(m, -EINVAL); | |
919 | assert_return(m->hdr, -EINVAL); | |
920 | assert_return(rtnl_message_type_is_routing_policy_rule(m->hdr->nlmsg_type), -EINVAL); | |
921 | ||
922 | routing_policy_rule = NLMSG_DATA(m->hdr); | |
923 | ||
924 | *len = routing_policy_rule->rtm_src_len; | |
925 | ||
926 | return 0; | |
927 | } |