]>
Commit | Line | Data |
---|---|---|
89489ef7 TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/in.h> | |
23 | #include <stdbool.h> | |
24 | #include <unistd.h> | |
25 | ||
07630cea LP |
26 | #include "sd-netlink.h" |
27 | ||
89489ef7 | 28 | #include "formats-util.h" |
89489ef7 | 29 | #include "missing.h" |
89489ef7 TG |
30 | #include "netlink-internal.h" |
31 | #include "netlink-types.h" | |
07630cea LP |
32 | #include "netlink-util.h" |
33 | #include "refcnt.h" | |
34 | #include "socket-util.h" | |
35 | #include "util.h" | |
89489ef7 TG |
36 | |
37 | int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
38 | struct rtmsg *rtm; | |
39 | ||
40 | assert_return(m, -EINVAL); | |
41 | assert_return(m->hdr, -EINVAL); | |
42 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
43 | ||
44 | rtm = NLMSG_DATA(m->hdr); | |
45 | ||
46 | if ((rtm->rtm_family == AF_INET && prefixlen > 32) || | |
47 | (rtm->rtm_family == AF_INET6 && prefixlen > 128)) | |
48 | return -ERANGE; | |
49 | ||
50 | rtm->rtm_dst_len = prefixlen; | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
56 | struct rtmsg *rtm; | |
57 | ||
58 | assert_return(m, -EINVAL); | |
59 | assert_return(m->hdr, -EINVAL); | |
60 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
61 | ||
62 | rtm = NLMSG_DATA(m->hdr); | |
63 | ||
64 | if ((rtm->rtm_family == AF_INET && prefixlen > 32) || | |
65 | (rtm->rtm_family == AF_INET6 && prefixlen > 128)) | |
66 | return -ERANGE; | |
67 | ||
68 | rtm->rtm_src_len = prefixlen; | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope) { | |
74 | struct rtmsg *rtm; | |
75 | ||
76 | assert_return(m, -EINVAL); | |
77 | assert_return(m->hdr, -EINVAL); | |
78 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
79 | ||
80 | rtm = NLMSG_DATA(m->hdr); | |
81 | ||
82 | rtm->rtm_scope = scope; | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | int sd_rtnl_message_route_get_family(sd_netlink_message *m, int *family) { | |
88 | struct rtmsg *rtm; | |
89 | ||
90 | assert_return(m, -EINVAL); | |
91 | assert_return(m->hdr, -EINVAL); | |
92 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
93 | assert_return(family, -EINVAL); | |
94 | ||
95 | rtm = NLMSG_DATA(m->hdr); | |
96 | ||
97 | *family = rtm->rtm_family; | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
ad70f789 TG |
102 | int sd_rtnl_message_route_get_protocol(sd_netlink_message *m, unsigned char *protocol) { |
103 | struct rtmsg *rtm; | |
104 | ||
105 | assert_return(m, -EINVAL); | |
106 | assert_return(m->hdr, -EINVAL); | |
107 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
108 | assert_return(protocol, -EINVAL); | |
109 | ||
110 | rtm = NLMSG_DATA(m->hdr); | |
111 | ||
112 | *protocol = rtm->rtm_protocol; | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | int sd_rtnl_message_route_get_scope(sd_netlink_message *m, unsigned char *scope) { | |
118 | struct rtmsg *rtm; | |
119 | ||
120 | assert_return(m, -EINVAL); | |
121 | assert_return(m->hdr, -EINVAL); | |
122 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
123 | assert_return(scope, -EINVAL); | |
124 | ||
125 | rtm = NLMSG_DATA(m->hdr); | |
126 | ||
127 | *scope = rtm->rtm_scope; | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | int sd_rtnl_message_route_get_tos(sd_netlink_message *m, unsigned char *tos) { | |
133 | struct rtmsg *rtm; | |
134 | ||
135 | assert_return(m, -EINVAL); | |
136 | assert_return(m->hdr, -EINVAL); | |
137 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
138 | assert_return(tos, -EINVAL); | |
139 | ||
140 | rtm = NLMSG_DATA(m->hdr); | |
141 | ||
142 | *tos = rtm->rtm_tos; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | int sd_rtnl_message_route_get_table(sd_netlink_message *m, unsigned char *table) { | |
148 | struct rtmsg *rtm; | |
149 | ||
150 | assert_return(m, -EINVAL); | |
151 | assert_return(m->hdr, -EINVAL); | |
152 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
153 | assert_return(table, -EINVAL); | |
154 | ||
155 | rtm = NLMSG_DATA(m->hdr); | |
156 | ||
157 | *table = rtm->rtm_table; | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
89489ef7 TG |
162 | int sd_rtnl_message_route_get_dst_prefixlen(sd_netlink_message *m, unsigned char *dst_len) { |
163 | struct rtmsg *rtm; | |
164 | ||
165 | assert_return(m, -EINVAL); | |
166 | assert_return(m->hdr, -EINVAL); | |
167 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
168 | assert_return(dst_len, -EINVAL); | |
169 | ||
170 | rtm = NLMSG_DATA(m->hdr); | |
171 | ||
172 | *dst_len = rtm->rtm_dst_len; | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | int sd_rtnl_message_route_get_src_prefixlen(sd_netlink_message *m, unsigned char *src_len) { | |
178 | struct rtmsg *rtm; | |
179 | ||
180 | assert_return(m, -EINVAL); | |
181 | assert_return(m->hdr, -EINVAL); | |
182 | assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); | |
183 | assert_return(src_len, -EINVAL); | |
184 | ||
185 | rtm = NLMSG_DATA(m->hdr); | |
186 | ||
187 | *src_len = rtm->rtm_src_len; | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
192 | int sd_rtnl_message_new_route(sd_netlink *rtnl, sd_netlink_message **ret, | |
193 | uint16_t nlmsg_type, int rtm_family, | |
194 | unsigned char rtm_protocol) { | |
195 | struct rtmsg *rtm; | |
196 | int r; | |
197 | ||
198 | assert_return(rtnl_message_type_is_route(nlmsg_type), -EINVAL); | |
199 | assert_return((nlmsg_type == RTM_GETROUTE && rtm_family == AF_UNSPEC) || | |
200 | rtm_family == AF_INET || rtm_family == AF_INET6, -EINVAL); | |
201 | assert_return(ret, -EINVAL); | |
202 | ||
203 | r = message_new(rtnl, ret, nlmsg_type); | |
204 | if (r < 0) | |
205 | return r; | |
206 | ||
207 | if (nlmsg_type == RTM_NEWROUTE) | |
208 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND; | |
209 | ||
210 | rtm = NLMSG_DATA((*ret)->hdr); | |
211 | ||
212 | rtm->rtm_family = rtm_family; | |
213 | rtm->rtm_scope = RT_SCOPE_UNIVERSE; | |
214 | rtm->rtm_type = RTN_UNICAST; | |
215 | rtm->rtm_table = RT_TABLE_MAIN; | |
216 | rtm->rtm_protocol = rtm_protocol; | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
221 | int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags) { | |
222 | struct ndmsg *ndm; | |
223 | ||
224 | assert_return(m, -EINVAL); | |
225 | assert_return(m->hdr, -EINVAL); | |
226 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
227 | ||
228 | ndm = NLMSG_DATA(m->hdr); | |
229 | ndm->ndm_flags |= flags; | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state) { | |
235 | struct ndmsg *ndm; | |
236 | ||
237 | assert_return(m, -EINVAL); | |
238 | assert_return(m->hdr, -EINVAL); | |
239 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
240 | ||
241 | ndm = NLMSG_DATA(m->hdr); | |
242 | ndm->ndm_state |= state; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags) { | |
248 | struct ndmsg *ndm; | |
249 | ||
250 | assert_return(m, -EINVAL); | |
251 | assert_return(m->hdr, -EINVAL); | |
252 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
253 | ||
254 | ndm = NLMSG_DATA(m->hdr); | |
255 | *flags = ndm->ndm_flags; | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state) { | |
261 | struct ndmsg *ndm; | |
262 | ||
263 | assert_return(m, -EINVAL); | |
264 | assert_return(m->hdr, -EINVAL); | |
265 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
266 | ||
267 | ndm = NLMSG_DATA(m->hdr); | |
268 | *state = ndm->ndm_state; | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | int sd_rtnl_message_neigh_get_family(sd_netlink_message *m, int *family) { | |
274 | struct ndmsg *ndm; | |
275 | ||
276 | assert_return(m, -EINVAL); | |
277 | assert_return(m->hdr, -EINVAL); | |
278 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
279 | assert_return(family, -EINVAL); | |
280 | ||
281 | ndm = NLMSG_DATA(m->hdr); | |
282 | ||
283 | *family = ndm->ndm_family; | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *index) { | |
289 | struct ndmsg *ndm; | |
290 | ||
291 | assert_return(m, -EINVAL); | |
292 | assert_return(m->hdr, -EINVAL); | |
293 | assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); | |
294 | assert_return(index, -EINVAL); | |
295 | ||
296 | ndm = NLMSG_DATA(m->hdr); | |
297 | ||
298 | *index = ndm->ndm_ifindex; | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | int sd_rtnl_message_new_neigh(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int index, int ndm_family) { | |
304 | struct ndmsg *ndm; | |
305 | int r; | |
306 | ||
307 | assert_return(rtnl_message_type_is_neigh(nlmsg_type), -EINVAL); | |
308 | assert_return(ndm_family == AF_INET || | |
309 | ndm_family == AF_INET6 || | |
310 | ndm_family == PF_BRIDGE, -EINVAL); | |
311 | assert_return(ret, -EINVAL); | |
312 | ||
313 | r = message_new(rtnl, ret, nlmsg_type); | |
314 | if (r < 0) | |
315 | return r; | |
316 | ||
317 | if (nlmsg_type == RTM_NEWNEIGH) | |
318 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND; | |
319 | ||
320 | ndm = NLMSG_DATA((*ret)->hdr); | |
321 | ||
322 | ndm->ndm_family = ndm_family; | |
323 | ndm->ndm_ifindex = index; | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change) { | |
329 | struct ifinfomsg *ifi; | |
330 | ||
331 | assert_return(m, -EINVAL); | |
332 | assert_return(m->hdr, -EINVAL); | |
333 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
334 | assert_return(change, -EINVAL); | |
335 | ||
336 | ifi = NLMSG_DATA(m->hdr); | |
337 | ||
338 | ifi->ifi_flags = flags; | |
339 | ifi->ifi_change = change; | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type) { | |
345 | struct ifinfomsg *ifi; | |
346 | ||
347 | assert_return(m, -EINVAL); | |
348 | assert_return(m->hdr, -EINVAL); | |
349 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
350 | ||
351 | ifi = NLMSG_DATA(m->hdr); | |
352 | ||
353 | ifi->ifi_type = type; | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family) { | |
359 | struct ifinfomsg *ifi; | |
360 | ||
361 | assert_return(m, -EINVAL); | |
362 | assert_return(m->hdr, -EINVAL); | |
363 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
364 | ||
365 | ifi = NLMSG_DATA(m->hdr); | |
366 | ||
367 | ifi->ifi_family = family; | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | int sd_rtnl_message_new_link(sd_netlink *rtnl, sd_netlink_message **ret, | |
373 | uint16_t nlmsg_type, int index) { | |
374 | struct ifinfomsg *ifi; | |
375 | int r; | |
376 | ||
377 | assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL); | |
378 | assert_return(nlmsg_type != RTM_DELLINK || index > 0, -EINVAL); | |
379 | assert_return(ret, -EINVAL); | |
380 | ||
381 | r = message_new(rtnl, ret, nlmsg_type); | |
382 | if (r < 0) | |
383 | return r; | |
384 | ||
385 | if (nlmsg_type == RTM_NEWLINK) | |
386 | (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL; | |
387 | ||
388 | ifi = NLMSG_DATA((*ret)->hdr); | |
389 | ||
390 | ifi->ifi_family = AF_UNSPEC; | |
391 | ifi->ifi_index = index; | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { | |
397 | struct ifaddrmsg *ifa; | |
398 | ||
399 | assert_return(m, -EINVAL); | |
400 | assert_return(m->hdr, -EINVAL); | |
401 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
402 | ||
403 | ifa = NLMSG_DATA(m->hdr); | |
404 | ||
405 | if ((ifa->ifa_family == AF_INET && prefixlen > 32) || | |
406 | (ifa->ifa_family == AF_INET6 && prefixlen > 128)) | |
407 | return -ERANGE; | |
408 | ||
409 | ifa->ifa_prefixlen = prefixlen; | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags) { | |
415 | struct ifaddrmsg *ifa; | |
416 | ||
417 | assert_return(m, -EINVAL); | |
418 | assert_return(m->hdr, -EINVAL); | |
419 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
420 | ||
421 | ifa = NLMSG_DATA(m->hdr); | |
422 | ||
423 | ifa->ifa_flags = flags; | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope) { | |
429 | struct ifaddrmsg *ifa; | |
430 | ||
431 | assert_return(m, -EINVAL); | |
432 | assert_return(m->hdr, -EINVAL); | |
433 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
434 | ||
435 | ifa = NLMSG_DATA(m->hdr); | |
436 | ||
437 | ifa->ifa_scope = scope; | |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
442 | int sd_rtnl_message_addr_get_family(sd_netlink_message *m, int *family) { | |
443 | struct ifaddrmsg *ifa; | |
444 | ||
445 | assert_return(m, -EINVAL); | |
446 | assert_return(m->hdr, -EINVAL); | |
447 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
448 | assert_return(family, -EINVAL); | |
449 | ||
450 | ifa = NLMSG_DATA(m->hdr); | |
451 | ||
452 | *family = ifa->ifa_family; | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | int sd_rtnl_message_addr_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen) { | |
458 | struct ifaddrmsg *ifa; | |
459 | ||
460 | assert_return(m, -EINVAL); | |
461 | assert_return(m->hdr, -EINVAL); | |
462 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
463 | assert_return(prefixlen, -EINVAL); | |
464 | ||
465 | ifa = NLMSG_DATA(m->hdr); | |
466 | ||
467 | *prefixlen = ifa->ifa_prefixlen; | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | int sd_rtnl_message_addr_get_scope(sd_netlink_message *m, unsigned char *scope) { | |
473 | struct ifaddrmsg *ifa; | |
474 | ||
475 | assert_return(m, -EINVAL); | |
476 | assert_return(m->hdr, -EINVAL); | |
477 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
478 | assert_return(scope, -EINVAL); | |
479 | ||
480 | ifa = NLMSG_DATA(m->hdr); | |
481 | ||
482 | *scope = ifa->ifa_scope; | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | int sd_rtnl_message_addr_get_flags(sd_netlink_message *m, unsigned char *flags) { | |
488 | struct ifaddrmsg *ifa; | |
489 | ||
490 | assert_return(m, -EINVAL); | |
491 | assert_return(m->hdr, -EINVAL); | |
492 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
493 | assert_return(flags, -EINVAL); | |
494 | ||
495 | ifa = NLMSG_DATA(m->hdr); | |
496 | ||
497 | *flags = ifa->ifa_flags; | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | int sd_rtnl_message_addr_get_ifindex(sd_netlink_message *m, int *ifindex) { | |
503 | struct ifaddrmsg *ifa; | |
504 | ||
505 | assert_return(m, -EINVAL); | |
506 | assert_return(m->hdr, -EINVAL); | |
507 | assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); | |
508 | assert_return(ifindex, -EINVAL); | |
509 | ||
510 | ifa = NLMSG_DATA(m->hdr); | |
511 | ||
512 | *ifindex = ifa->ifa_index; | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
517 | int sd_rtnl_message_new_addr(sd_netlink *rtnl, sd_netlink_message **ret, | |
518 | uint16_t nlmsg_type, int index, | |
519 | int family) { | |
520 | struct ifaddrmsg *ifa; | |
521 | int r; | |
522 | ||
523 | assert_return(rtnl_message_type_is_addr(nlmsg_type), -EINVAL); | |
524 | assert_return((nlmsg_type == RTM_GETADDR && index == 0) || | |
525 | index > 0, -EINVAL); | |
526 | assert_return((nlmsg_type == RTM_GETADDR && family == AF_UNSPEC) || | |
527 | family == AF_INET || family == AF_INET6, -EINVAL); | |
528 | assert_return(ret, -EINVAL); | |
529 | ||
530 | r = message_new(rtnl, ret, nlmsg_type); | |
531 | if (r < 0) | |
532 | return r; | |
533 | ||
534 | if (nlmsg_type == RTM_GETADDR) | |
535 | (*ret)->hdr->nlmsg_flags |= NLM_F_DUMP; | |
536 | ||
537 | ifa = NLMSG_DATA((*ret)->hdr); | |
538 | ||
539 | ifa->ifa_index = index; | |
540 | ifa->ifa_family = family; | |
541 | if (family == AF_INET) | |
542 | ifa->ifa_prefixlen = 32; | |
543 | else if (family == AF_INET6) | |
544 | ifa->ifa_prefixlen = 128; | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | int sd_rtnl_message_new_addr_update(sd_netlink *rtnl, sd_netlink_message **ret, | |
550 | int index, int family) { | |
551 | int r; | |
552 | ||
553 | r = sd_rtnl_message_new_addr(rtnl, ret, RTM_NEWADDR, index, family); | |
554 | if (r < 0) | |
555 | return r; | |
556 | ||
557 | (*ret)->hdr->nlmsg_flags |= NLM_F_REPLACE; | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | int sd_rtnl_message_link_get_ifindex(sd_netlink_message *m, int *ifindex) { | |
563 | struct ifinfomsg *ifi; | |
564 | ||
565 | assert_return(m, -EINVAL); | |
566 | assert_return(m->hdr, -EINVAL); | |
567 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
568 | assert_return(ifindex, -EINVAL); | |
569 | ||
570 | ifi = NLMSG_DATA(m->hdr); | |
571 | ||
572 | *ifindex = ifi->ifi_index; | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
577 | int sd_rtnl_message_link_get_flags(sd_netlink_message *m, unsigned *flags) { | |
578 | struct ifinfomsg *ifi; | |
579 | ||
580 | assert_return(m, -EINVAL); | |
581 | assert_return(m->hdr, -EINVAL); | |
582 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
583 | assert_return(flags, -EINVAL); | |
584 | ||
585 | ifi = NLMSG_DATA(m->hdr); | |
586 | ||
587 | *flags = ifi->ifi_flags; | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | int sd_rtnl_message_link_get_type(sd_netlink_message *m, unsigned *type) { | |
593 | struct ifinfomsg *ifi; | |
594 | ||
595 | assert_return(m, -EINVAL); | |
596 | assert_return(m->hdr, -EINVAL); | |
597 | assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); | |
598 | assert_return(type, -EINVAL); | |
599 | ||
600 | ifi = NLMSG_DATA(m->hdr); | |
601 | ||
602 | *type = ifi->ifi_type; | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | int sd_rtnl_message_get_family(sd_netlink_message *m, int *family) { | |
608 | assert_return(m, -EINVAL); | |
609 | assert_return(family, -EINVAL); | |
610 | ||
611 | assert(m->hdr); | |
612 | ||
613 | if (rtnl_message_type_is_link(m->hdr->nlmsg_type)) { | |
614 | struct ifinfomsg *ifi; | |
615 | ||
616 | ifi = NLMSG_DATA(m->hdr); | |
617 | ||
618 | *family = ifi->ifi_family; | |
619 | ||
620 | return 0; | |
621 | } else if (rtnl_message_type_is_route(m->hdr->nlmsg_type)) { | |
622 | struct rtmsg *rtm; | |
623 | ||
624 | rtm = NLMSG_DATA(m->hdr); | |
625 | ||
626 | *family = rtm->rtm_family; | |
627 | ||
628 | return 0; | |
629 | } else if (rtnl_message_type_is_neigh(m->hdr->nlmsg_type)) { | |
630 | struct ndmsg *ndm; | |
631 | ||
632 | ndm = NLMSG_DATA(m->hdr); | |
633 | ||
634 | *family = ndm->ndm_family; | |
635 | ||
636 | return 0; | |
637 | } else if (rtnl_message_type_is_addr(m->hdr->nlmsg_type)) { | |
638 | struct ifaddrmsg *ifa; | |
639 | ||
640 | ifa = NLMSG_DATA(m->hdr); | |
641 | ||
642 | *family = ifa->ifa_family; | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | return -EOPNOTSUPP; | |
648 | } |