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[mirror_iproute2.git] / ip / ipaddress.c
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aba5acdf
SH		 1/*
2 * ipaddress.c "ip address".
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
11 * Changes:
12 * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated
13 */
14
15#include <stdio.h>
16#include <stdlib.h>
17#include <unistd.h>
18#include <syslog.h>
19#include <fcntl.h>
20#include <sys/ioctl.h>
21#include <sys/socket.h>
22#include <sys/ioctl.h>
23#include <linux/netdevice.h>
24#include <linux/if_arp.h>
25#include <linux/sockios.h>
26#include <netinet/in.h>
27#include <arpa/inet.h>
28#include <string.h>
29#include <fnmatch.h>
30
31#include "rt_names.h"
32#include "utils.h"
33#include "ll_map.h"
34#include "ip_common.h"
35
36static struct
37{
38 int ifindex;
39 int family;
40 int oneline;
41 int showqueue;
42 inet_prefix pfx;
43 int scope, scopemask;
44 int flags, flagmask;
45 int up;
46 char *label;
47 int flushed;
48 char *flushb;
49 int flushp;
50 int flushe;
51 struct rtnl_handle *rth;
52} filter;
53
54static int do_link;
55
56static void usage(void) __attribute__((noreturn));
57
58static void usage(void)
59{
60 if (do_link) {
61 iplink_usage();
62 }
63 fprintf(stderr, "Usage: ip addr {add|del} IFADDR dev STRING\n");
64 fprintf(stderr, " ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
65 fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
66 fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
67 fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n");
68 fprintf(stderr, " [ label STRING ] [ scope SCOPE-ID ]\n");
69 fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
70 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
71 fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n");
72 fprintf(stderr, " tentative | deprecated ]\n");
73 exit(-1);
74}
75
76void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
77{
78 fprintf(fp, "<");
79 flags &= ~IFF_RUNNING;
80#define _PF(f) if (flags&IFF_##f) { \
81 flags &= ~IFF_##f ; \
82 fprintf(fp, #f "%s", flags ? "," : ""); }
83 _PF(LOOPBACK);
84 _PF(BROADCAST);
85 _PF(POINTOPOINT);
86 _PF(MULTICAST);
87 _PF(NOARP);
88 _PF(ALLMULTI);
89 _PF(PROMISC);
90 _PF(MASTER);
91 _PF(SLAVE);
92 _PF(DEBUG);
93 _PF(DYNAMIC);
94 _PF(AUTOMEDIA);
95 _PF(PORTSEL);
96 _PF(NOTRAILERS);
97 _PF(UP);
98#undef _PF
99 if (flags)
100 fprintf(fp, "%x", flags);
101 if (mdown)
102 fprintf(fp, ",M-DOWN");
103 fprintf(fp, "> ");
104}
105
106void print_queuelen(char *name)
107{
108 struct ifreq ifr;
109 int s;
110
111 s = socket(AF_INET, SOCK_STREAM, 0);
112 if (s < 0)
113 return;
114
115 memset(&ifr, 0, sizeof(ifr));
116 strcpy(ifr.ifr_name, name);
117 if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
118 perror("SIOCGIFXQLEN");
119 close(s);
120 return;
121 }
122 close(s);
123
124 if (ifr.ifr_qlen)
125 printf("qlen %d", ifr.ifr_qlen);
126}
127
128int print_linkinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
129{
130 FILE *fp = (FILE*)arg;
131 struct ifinfomsg *ifi = NLMSG_DATA(n);
132 struct rtattr * tb[IFLA_MAX+1];
133 int len = n->nlmsg_len;
134 unsigned m_flag = 0;
135
136 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
137 return 0;
138
139 len -= NLMSG_LENGTH(sizeof(*ifi));
140 if (len < 0)
141 return -1;
142
143 if (filter.ifindex && ifi->ifi_index != filter.ifindex)
144 return 0;
145 if (filter.up && !(ifi->ifi_flags&IFF_UP))
146 return 0;
147
148 memset(tb, 0, sizeof(tb));
149 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
150 if (tb[IFLA_IFNAME] == NULL) {
151 fprintf(stderr, "BUG: nil ifname\n");
152 return -1;
153 }
154 if (filter.label &&
155 (!filter.family || filter.family == AF_PACKET) &&
156 fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
157 return 0;
158
159 if (n->nlmsg_type == RTM_DELLINK)
160 fprintf(fp, "Deleted ");
161
162 fprintf(fp, "%d: %s", ifi->ifi_index,
163 tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
164
165 if (tb[IFLA_LINK]) {
166 SPRINT_BUF(b1);
167 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
168 if (iflink == 0)
169 fprintf(fp, "@NONE: ");
170 else {
171 fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
172 m_flag = ll_index_to_flags(iflink);
173 m_flag = !(m_flag & IFF_UP);
174 }
175 } else {
176 fprintf(fp, ": ");
177 }
178 print_link_flags(fp, ifi->ifi_flags, m_flag);
179
180 if (tb[IFLA_MTU])
181 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
182 if (tb[IFLA_QDISC])
183 fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
184#ifdef IFLA_MASTER
185 if (tb[IFLA_MASTER]) {
186 SPRINT_BUF(b1);
187 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
188 }
189#endif
190 if (filter.showqueue)
191 print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
192
193 if (!filter.family || filter.family == AF_PACKET) {
194 SPRINT_BUF(b1);
195 fprintf(fp, "%s", _SL_);
196 fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
197
198 if (tb[IFLA_ADDRESS]) {
199 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
200 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
201 ifi->ifi_type,
202 b1, sizeof(b1)));
203 }
204 if (tb[IFLA_BROADCAST]) {
205 if (ifi->ifi_flags&IFF_POINTOPOINT)
206 fprintf(fp, " peer ");
207 else
208 fprintf(fp, " brd ");
209 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
210 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
211 ifi->ifi_type,
212 b1, sizeof(b1)));
213 }
214 }
215 if (do_link && tb[IFLA_STATS] && show_stats) {
216 struct net_device_stats slocal;
217 struct net_device_stats *s = RTA_DATA(tb[IFLA_STATS]);
218 if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
219 memcpy(&slocal, s, sizeof(slocal));
220 s = &slocal;
221 }
222 fprintf(fp, "%s", _SL_);
223 fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
224 s->rx_compressed ? "compressed" : "", _SL_);
225 fprintf(fp, " %-10lu %-8lu %-7lu %-7lu %-7lu %-7lu",
226 s->rx_bytes, s->rx_packets, s->rx_errors,
227 s->rx_dropped, s->rx_over_errors,
228 s->multicast
229 );
230 if (s->rx_compressed)
231 fprintf(fp, " %-7lu", s->rx_compressed);
232 if (show_stats > 1) {
233 fprintf(fp, "%s", _SL_);
234 fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
235 fprintf(fp, " %-7lu %-7lu %-7lu %-7lu %-7lu",
236 s->rx_length_errors,
237 s->rx_crc_errors,
238 s->rx_frame_errors,
239 s->rx_fifo_errors,
240 s->rx_missed_errors
241 );
242 }
243 fprintf(fp, "%s", _SL_);
244 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
245 s->tx_compressed ? "compressed" : "", _SL_);
246 fprintf(fp, " %-10lu %-8lu %-7lu %-7lu %-7lu %-7lu",
247 s->tx_bytes, s->tx_packets, s->tx_errors,
248 s->tx_dropped, s->tx_carrier_errors, s->collisions);
249 if (s->tx_compressed)
250 fprintf(fp, " %-7lu", s->tx_compressed);
251 if (show_stats > 1) {
252 fprintf(fp, "%s", _SL_);
253 fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_);
254 fprintf(fp, " %-7lu %-7lu %-7lu %-7lu",
255 s->tx_aborted_errors,
256 s->tx_fifo_errors,
257 s->tx_window_errors,
258 s->tx_heartbeat_errors
259 );
260 }
261 }
262 fprintf(fp, "\n");
263 fflush(fp);
264 return 0;
265}
266
267static int flush_update(void)
268{
269 if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
270 perror("Failed to send flush request\n");
271 return -1;
272 }
273 filter.flushp = 0;
274 return 0;
275}
276
277int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
278{
279 FILE *fp = (FILE*)arg;
280 struct ifaddrmsg *ifa = NLMSG_DATA(n);
281 int len = n->nlmsg_len;
282 struct rtattr * rta_tb[IFA_MAX+1];
283 char abuf[256];
284 SPRINT_BUF(b1);
285
286 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
287 return 0;
288 len -= NLMSG_LENGTH(sizeof(*ifa));
289 if (len < 0) {
290 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
291 return -1;
292 }
293
294 if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
295 return 0;
296
297 memset(rta_tb, 0, sizeof(rta_tb));
298 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
299
300 if (!rta_tb[IFA_LOCAL])
301 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
302 if (!rta_tb[IFA_ADDRESS])
303 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
304
305 if (filter.ifindex && filter.ifindex != ifa->ifa_index)
306 return 0;
307 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
308 return 0;
309 if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
310 return 0;
311 if (filter.label) {
312 SPRINT_BUF(b1);
313 const char *label;
314 if (rta_tb[IFA_LABEL])
315 label = RTA_DATA(rta_tb[IFA_LABEL]);
316 else
317 label = ll_idx_n2a(ifa->ifa_index, b1);
318 if (fnmatch(filter.label, label, 0) != 0)
319 return 0;
320 }
321 if (filter.pfx.family) {
322 if (rta_tb[IFA_LOCAL]) {
323 inet_prefix dst;
324 memset(&dst, 0, sizeof(dst));
325 dst.family = ifa->ifa_family;
326 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
327 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
328 return 0;
329 }
330 }
331
332 if (filter.flushb) {
333 struct nlmsghdr *fn;
334 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
335 if (flush_update())
336 return -1;
337 }
338 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
339 memcpy(fn, n, n->nlmsg_len);
340 fn->nlmsg_type = RTM_DELADDR;
341 fn->nlmsg_flags = NLM_F_REQUEST;
342 fn->nlmsg_seq = ++filter.rth->seq;
343 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
344 filter.flushed++;
345 if (show_stats < 2)
346 return 0;
347 }
348
349 if (n->nlmsg_type == RTM_DELADDR)
350 fprintf(fp, "Deleted ");
351
352 if (filter.oneline || filter.flushb)
353 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
354 if (ifa->ifa_family == AF_INET)
355 fprintf(fp, " inet ");
356 else if (ifa->ifa_family == AF_INET6)
357 fprintf(fp, " inet6 ");
358 else if (ifa->ifa_family == AF_DECnet)
359 fprintf(fp, " dnet ");
360 else if (ifa->ifa_family == AF_IPX)
361 fprintf(fp, " ipx ");
362 else
363 fprintf(fp, " family %d ", ifa->ifa_family);
364
365 if (rta_tb[IFA_LOCAL]) {
366 fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
367 RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
368 RTA_DATA(rta_tb[IFA_LOCAL]),
369 abuf, sizeof(abuf)));
370
371 if (rta_tb[IFA_ADDRESS] == NULL ||
372 memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
373 fprintf(fp, "/%d ", ifa->ifa_prefixlen);
374 } else {
375 fprintf(fp, " peer %s/%d ",
376 rt_addr_n2a(ifa->ifa_family,
377 RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
378 RTA_DATA(rta_tb[IFA_ADDRESS]),
379 abuf, sizeof(abuf)),
380 ifa->ifa_prefixlen);
381 }
382 }
383
384 if (rta_tb[IFA_BROADCAST]) {
385 fprintf(fp, "brd %s ",
386 rt_addr_n2a(ifa->ifa_family,
387 RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
388 RTA_DATA(rta_tb[IFA_BROADCAST]),
389 abuf, sizeof(abuf)));
390 }
391 if (rta_tb[IFA_ANYCAST]) {
392 fprintf(fp, "any %s ",
393 rt_addr_n2a(ifa->ifa_family,
394 RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
395 RTA_DATA(rta_tb[IFA_ANYCAST]),
396 abuf, sizeof(abuf)));
397 }
398 fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
399 if (ifa->ifa_flags&IFA_F_SECONDARY) {
400 ifa->ifa_flags &= ~IFA_F_SECONDARY;
401 fprintf(fp, "secondary ");
402 }
403 if (ifa->ifa_flags&IFA_F_TENTATIVE) {
404 ifa->ifa_flags &= ~IFA_F_TENTATIVE;
405 fprintf(fp, "tentative ");
406 }
407 if (ifa->ifa_flags&IFA_F_DEPRECATED) {
408 ifa->ifa_flags &= ~IFA_F_DEPRECATED;
409 fprintf(fp, "deprecated ");
410 }
411 if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
412 fprintf(fp, "dynamic ");
413 } else
414 ifa->ifa_flags &= ~IFA_F_PERMANENT;
415 if (ifa->ifa_flags)
416 fprintf(fp, "flags %02x ", ifa->ifa_flags);
417 if (rta_tb[IFA_LABEL])
418 fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
419 if (rta_tb[IFA_CACHEINFO]) {
420 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
421 char buf[128];
422 fprintf(fp, "%s", _SL_);
423 if (ci->ifa_valid == 0xFFFFFFFFU)
424 sprintf(buf, "valid_lft forever");
425 else
426 sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
427 if (ci->ifa_prefered == 0xFFFFFFFFU)
428 sprintf(buf+strlen(buf), " preferred_lft forever");
429 else
430 sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
431 fprintf(fp, " %s", buf);
432 }
433 fprintf(fp, "\n");
434 fflush(fp);
435 return 0;
436}
437
438
439struct nlmsg_list
440{
441 struct nlmsg_list *next;
442 struct nlmsghdr h;
443};
444
445int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
446{
447 for ( ;ainfo ; ainfo = ainfo->next) {
448 struct nlmsghdr *n = &ainfo->h;
449 struct ifaddrmsg *ifa = NLMSG_DATA(n);
450
451 if (n->nlmsg_type != RTM_NEWADDR)
452 continue;
453
454 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
455 return -1;
456
457 if (ifa->ifa_index != ifindex ||
458 (filter.family && filter.family != ifa->ifa_family))
459 continue;
460
461 print_addrinfo(NULL, n, fp);
462 }
463 return 0;
464}
465
466
467int store_nlmsg(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
468{
469 struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
470 struct nlmsg_list *h;
471 struct nlmsg_list **lp;
472
473 h = malloc(n->nlmsg_len+sizeof(void*));
474 if (h == NULL)
475 return -1;
476
477 memcpy(&h->h, n, n->nlmsg_len);
478 h->next = NULL;
479
480 for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
481 *lp = h;
482
483 ll_remember_index(who, n, NULL);
484 return 0;
485}
486
487int ipaddr_list_or_flush(int argc, char **argv, int flush)
488{
489 struct nlmsg_list *linfo = NULL;
490 struct nlmsg_list *ainfo = NULL;
491 struct nlmsg_list *l;
492 struct rtnl_handle rth;
493 char *filter_dev = NULL;
494 int no_link = 0;
495
496 ipaddr_reset_filter(oneline);
497 filter.showqueue = 1;
498
499 if (filter.family == AF_UNSPEC)
500 filter.family = preferred_family;
501
502 if (flush) {
503 if (argc <= 0) {
504 fprintf(stderr, "Flush requires arguments.\n");
505 return -1;
506 }
507 if (filter.family == AF_PACKET) {
508 fprintf(stderr, "Cannot flush link addresses.\n");
509 return -1;
510 }
511 }
512
513 while (argc > 0) {
514 if (strcmp(*argv, "to") == 0) {
515 NEXT_ARG();
516 get_prefix(&filter.pfx, *argv, filter.family);
517 if (filter.family == AF_UNSPEC)
518 filter.family = filter.pfx.family;
519 } else if (strcmp(*argv, "scope") == 0) {
520 int scope = 0;
521 NEXT_ARG();
522 filter.scopemask = -1;
523 if (rtnl_rtscope_a2n(&scope, *argv)) {
524 if (strcmp(*argv, "all") != 0)
525 invarg("invalid \"scope\"\n", *argv);
526 scope = RT_SCOPE_NOWHERE;
527 filter.scopemask = 0;
528 }
529 filter.scope = scope;
530 } else if (strcmp(*argv, "up") == 0) {
531 filter.up = 1;
532 } else if (strcmp(*argv, "dynamic") == 0) {
533 filter.flags &= ~IFA_F_PERMANENT;
534 filter.flagmask |= IFA_F_PERMANENT;
535 } else if (strcmp(*argv, "permanent") == 0) {
536 filter.flags |= IFA_F_PERMANENT;
537 filter.flagmask |= IFA_F_PERMANENT;
538 } else if (strcmp(*argv, "secondary") == 0) {
539 filter.flags |= IFA_F_SECONDARY;
540 filter.flagmask |= IFA_F_SECONDARY;
541 } else if (strcmp(*argv, "primary") == 0) {
542 filter.flags &= ~IFA_F_SECONDARY;
543 filter.flagmask |= IFA_F_SECONDARY;
544 } else if (strcmp(*argv, "tentative") == 0) {
545 filter.flags |= IFA_F_TENTATIVE;
546 filter.flagmask |= IFA_F_TENTATIVE;
547 } else if (strcmp(*argv, "deprecated") == 0) {
548 filter.flags |= IFA_F_DEPRECATED;
549 filter.flagmask |= IFA_F_DEPRECATED;
550 } else if (strcmp(*argv, "label") == 0) {
551 NEXT_ARG();
552 filter.label = *argv;
553 } else {
554 if (strcmp(*argv, "dev") == 0) {
555 NEXT_ARG();
556 }
557 if (matches(*argv, "help") == 0)
558 usage();
559 if (filter_dev)
560 duparg2("dev", *argv);
561 filter_dev = *argv;
562 }
563 argv++; argc--;
564 }
565
566 if (rtnl_open(&rth, 0) < 0)
567 exit(1);
568
569 if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
570 perror("Cannot send dump request");
571 exit(1);
572 }
573
574 if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
575 fprintf(stderr, "Dump terminated\n");
576 exit(1);
577 }
578
579 if (filter_dev) {
580 filter.ifindex = ll_name_to_index(filter_dev);
581 if (filter.ifindex <= 0) {
582 fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
583 return -1;
584 }
585 }
586
587 if (flush) {
588 int round = 0;
589 char flushb[4096-512];
590
591 filter.flushb = flushb;
592 filter.flushp = 0;
593 filter.flushe = sizeof(flushb);
594 filter.rth = &rth;
595
596 for (;;) {
597 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
598 perror("Cannot send dump request");
599 exit(1);
600 }
601 filter.flushed = 0;
602 if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) {
603 fprintf(stderr, "Flush terminated\n");
604 exit(1);
605 }
606 if (filter.flushed == 0) {
607 if (round == 0) {
608 fprintf(stderr, "Nothing to flush.\n");
609 } else if (show_stats)
610 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
611 fflush(stdout);
612 return 0;
613 }
614 round++;
615 if (flush_update() < 0)
616 exit(1);
617 if (show_stats) {
618 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
619 fflush(stdout);
620 }
621 }
622 }
623
624 if (filter.family != AF_PACKET) {
625 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
626 perror("Cannot send dump request");
627 exit(1);
628 }
629
630 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
631 fprintf(stderr, "Dump terminated\n");
632 exit(1);
633 }
634 }
635
636
637 if (filter.family && filter.family != AF_PACKET) {
638 struct nlmsg_list **lp;
639 lp=&linfo;
640
641 if (filter.oneline)
642 no_link = 1;
643
644 while ((l=*lp)!=NULL) {
645 int ok = 0;
646 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
647 struct nlmsg_list *a;
648
649 for (a=ainfo; a; a=a->next) {
650 struct nlmsghdr *n = &a->h;
651 struct ifaddrmsg *ifa = NLMSG_DATA(n);
652
653 if (ifa->ifa_index != ifi->ifi_index ||
654 (filter.family && filter.family != ifa->ifa_family))
655 continue;
656 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
657 continue;
658 if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
659 continue;
660 if (filter.pfx.family || filter.label) {
661 struct rtattr *tb[IFA_MAX+1];
662 memset(tb, 0, sizeof(tb));
663 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
664 if (!tb[IFA_LOCAL])
665 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
666
667 if (filter.pfx.family && tb[IFA_LOCAL]) {
668 inet_prefix dst;
669 memset(&dst, 0, sizeof(dst));
670 dst.family = ifa->ifa_family;
671 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
672 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
673 continue;
674 }
675 if (filter.label) {
676 SPRINT_BUF(b1);
677 const char *label;
678 if (tb[IFA_LABEL])
679 label = RTA_DATA(tb[IFA_LABEL]);
680 else
681 label = ll_idx_n2a(ifa->ifa_index, b1);
682 if (fnmatch(filter.label, label, 0) != 0)
683 continue;
684 }
685 }
686
687 ok = 1;
688 break;
689 }
690 if (!ok)
691 *lp = l->next;
692 else
693 lp = &l->next;
694 }
695 }
696
697 for (l=linfo; l; l = l->next) {
698 if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
699 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
700 if (filter.family != AF_PACKET)
701 print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
702 }
703 fflush(stdout);
704 }
705
706 exit(0);
707}
708
709int ipaddr_list_link(int argc, char **argv)
710{
711 preferred_family = AF_PACKET;
712 do_link = 1;
713 return ipaddr_list_or_flush(argc, argv, 0);
714}
715
716void ipaddr_reset_filter(int oneline)
717{
718 memset(&filter, 0, sizeof(filter));
719 filter.oneline = oneline;
720}
721
722int default_scope(inet_prefix *lcl)
723{
724 if (lcl->family == AF_INET) {
725 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
726 return RT_SCOPE_HOST;
727 }
728 return 0;
729}
730
731int ipaddr_modify(int cmd, int argc, char **argv)
732{
733 struct rtnl_handle rth;
734 struct {
735 struct nlmsghdr n;
736 struct ifaddrmsg ifa;
737 char buf[256];
738 } req;
739 char *d = NULL;
740 char *l = NULL;
741 inet_prefix lcl;
742 inet_prefix peer;
743 int local_len = 0;
744 int peer_len = 0;
745 int brd_len = 0;
746 int any_len = 0;
747 int scoped = 0;
748
749 memset(&req, 0, sizeof(req));
750
751 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
752 req.n.nlmsg_flags = NLM_F_REQUEST;
753 req.n.nlmsg_type = cmd;
754 req.ifa.ifa_family = preferred_family;
755
756 while (argc > 0) {
757 if (strcmp(*argv, "peer") == 0 ||
758 strcmp(*argv, "remote") == 0) {
759 NEXT_ARG();
760
761 if (peer_len)
762 duparg("peer", *argv);
763 get_prefix(&peer, *argv, req.ifa.ifa_family);
764 peer_len = peer.bytelen;
765 if (req.ifa.ifa_family == AF_UNSPEC)
766 req.ifa.ifa_family = peer.family;
767 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
768 req.ifa.ifa_prefixlen = peer.bitlen;
769 } else if (matches(*argv, "broadcast") == 0 ||
770 strcmp(*argv, "brd") == 0) {
771 inet_prefix addr;
772 NEXT_ARG();
773 if (brd_len)
774 duparg("broadcast", *argv);
775 if (strcmp(*argv, "+") == 0)
776 brd_len = -1;
777 else if (strcmp(*argv, "-") == 0)
778 brd_len = -2;
779 else {
780 get_addr(&addr, *argv, req.ifa.ifa_family);
781 if (req.ifa.ifa_family == AF_UNSPEC)
782 req.ifa.ifa_family = addr.family;
783 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
784 brd_len = addr.bytelen;
785 }
786 } else if (strcmp(*argv, "anycast") == 0) {
787 inet_prefix addr;
788 NEXT_ARG();
789 if (any_len)
790 duparg("anycast", *argv);
791 get_addr(&addr, *argv, req.ifa.ifa_family);
792 if (req.ifa.ifa_family == AF_UNSPEC)
793 req.ifa.ifa_family = addr.family;
794 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
795 any_len = addr.bytelen;
796 } else if (strcmp(*argv, "scope") == 0) {
797 int scope = 0;
798 NEXT_ARG();
799 if (rtnl_rtscope_a2n(&scope, *argv))
800 invarg(*argv, "invalid scope value.");
801 req.ifa.ifa_scope = scope;
802 scoped = 1;
803 } else if (strcmp(*argv, "dev") == 0) {
804 NEXT_ARG();
805 d = *argv;
806 } else if (strcmp(*argv, "label") == 0) {
807 NEXT_ARG();
808 l = *argv;
809 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
810 } else {
811 if (strcmp(*argv, "local") == 0) {
812 NEXT_ARG();
813 }
814 if (matches(*argv, "help") == 0)
815 usage();
816 if (local_len)
817 duparg2("local", *argv);
818 get_prefix(&lcl, *argv, req.ifa.ifa_family);
819 if (req.ifa.ifa_family == AF_UNSPEC)
820 req.ifa.ifa_family = lcl.family;
821 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
822 local_len = lcl.bytelen;
823 }
824 argc--; argv++;
825 }
826 if (d == NULL) {
827 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
828 return -1;
829 }
830 if (l && matches(d, l) != 0) {
831 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
832 exit(1);
833 }
834
835 if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
836 peer = lcl;
837 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
838 }
839 if (req.ifa.ifa_prefixlen == 0)
840 req.ifa.ifa_prefixlen = lcl.bitlen;
841
842 if (brd_len < 0 && cmd != RTM_DELADDR) {
843 inet_prefix brd;
844 int i;
845 if (req.ifa.ifa_family != AF_INET) {
846 fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
847 return -1;
848 }
849 brd = peer;
850 if (brd.bitlen <= 30) {
851 for (i=31; i>=brd.bitlen; i--) {
852 if (brd_len == -1)
853 brd.data[0] |= htonl(1<<(31-i));
854 else
855 brd.data[0] &= ~htonl(1<<(31-i));
856 }
857 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
858 brd_len = brd.bytelen;
859 }
860 }
861 if (!scoped && cmd != RTM_DELADDR)
862 req.ifa.ifa_scope = default_scope(&lcl);
863
864 if (rtnl_open(&rth, 0) < 0)
865 exit(1);
866
867 ll_init_map(&rth);
868
869 if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
870 fprintf(stderr, "Cannot find device \"%s\"\n", d);
871 return -1;
872 }
873
874 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
875 exit(2);
876
877 exit(0);
878}
879
880int do_ipaddr(int argc, char **argv)
881{
882 if (argc < 1)
883 return ipaddr_list_or_flush(0, NULL, 0);
884 if (matches(*argv, "add") == 0)
885 return ipaddr_modify(RTM_NEWADDR, argc-1, argv+1);
886 if (matches(*argv, "delete") == 0)
887 return ipaddr_modify(RTM_DELADDR, argc-1, argv+1);
888 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
889 || matches(*argv, "lst") == 0)
890 return ipaddr_list_or_flush(argc-1, argv+1, 0);
891 if (matches(*argv, "flush") == 0)
892 return ipaddr_list_or_flush(argc-1, argv+1, 1);
893 if (matches(*argv, "help") == 0)
894 usage();
895 fprintf(stderr, "Command \"%s\" is unknown, try \"ip address help\".\n", *argv);
896 exit(-1);
897}
898
Upstream mirror of iproute2