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add support for extended ifa_flags
[mirror_iproute2.git] / ip / ipaddress.c
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 */
12
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <unistd.h>
16 #include <syslog.h>
17 #include <inttypes.h>
18 #include <fcntl.h>
19 #include <sys/ioctl.h>
20 #include <sys/socket.h>
21 #include <sys/ioctl.h>
22 #include <errno.h>
23 #include <netinet/in.h>
24 #include <arpa/inet.h>
25 #include <string.h>
26 #include <fnmatch.h>
27
28 #include <linux/netdevice.h>
29 #include <linux/if_arp.h>
30 #include <linux/sockios.h>
31
32 #include "rt_names.h"
33 #include "utils.h"
34 #include "ll_map.h"
35 #include "ip_common.h"
36
37 enum {
38 IPADD_LIST,
39 IPADD_FLUSH,
40 IPADD_SAVE,
41 };
42
43 static struct
44 {
45 int ifindex;
46 int family;
47 int oneline;
48 int showqueue;
49 inet_prefix pfx;
50 int scope, scopemask;
51 int flags, flagmask;
52 int up;
53 char *label;
54 int flushed;
55 char *flushb;
56 int flushp;
57 int flushe;
58 int group;
59 } filter;
60
61 static int do_link;
62
63 static void usage(void) __attribute__((noreturn));
64
65 static void usage(void)
66 {
67 if (do_link) {
68 iplink_usage();
69 }
70 fprintf(stderr, "Usage: ip addr {add|change|replace} IFADDR dev STRING [ LIFETIME ]\n");
71 fprintf(stderr, " [ CONFFLAG-LIST ]\n");
72 fprintf(stderr, " ip addr del IFADDR dev STRING\n");
73 fprintf(stderr, " ip addr {show|save|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
74 fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ] [up]\n");
75 fprintf(stderr, " ip addr {showdump|restore}\n");
76 fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
77 fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n");
78 fprintf(stderr, " [ label STRING ] [ scope SCOPE-ID ]\n");
79 fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
80 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
81 fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n");
82 fprintf(stderr, " tentative | deprecated | dadfailed | temporary |\n");
83 fprintf(stderr, " CONFFLAG-LIST ]\n");
84 fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
85 fprintf(stderr, "CONFFLAG := [ home | nodad ]\n");
86 fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
87 fprintf(stderr, "LFT := forever | SECONDS\n");
88
89 exit(-1);
90 }
91
92 static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
93 {
94 fprintf(fp, "<");
95 if (flags & IFF_UP && !(flags & IFF_RUNNING))
96 fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
97 flags &= ~IFF_RUNNING;
98 #define _PF(f) if (flags&IFF_##f) { \
99 flags &= ~IFF_##f ; \
100 fprintf(fp, #f "%s", flags ? "," : ""); }
101 _PF(LOOPBACK);
102 _PF(BROADCAST);
103 _PF(POINTOPOINT);
104 _PF(MULTICAST);
105 _PF(NOARP);
106 _PF(ALLMULTI);
107 _PF(PROMISC);
108 _PF(MASTER);
109 _PF(SLAVE);
110 _PF(DEBUG);
111 _PF(DYNAMIC);
112 _PF(AUTOMEDIA);
113 _PF(PORTSEL);
114 _PF(NOTRAILERS);
115 _PF(UP);
116 _PF(LOWER_UP);
117 _PF(DORMANT);
118 _PF(ECHO);
119 #undef _PF
120 if (flags)
121 fprintf(fp, "%x", flags);
122 if (mdown)
123 fprintf(fp, ",M-DOWN");
124 fprintf(fp, "> ");
125 }
126
127 static const char *oper_states[] = {
128 "UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
129 "TESTING", "DORMANT", "UP"
130 };
131
132 static void print_operstate(FILE *f, __u8 state)
133 {
134 if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
135 fprintf(f, "state %#x ", state);
136 else
137 fprintf(f, "state %s ", oper_states[state]);
138 }
139
140 int get_operstate(const char *name)
141 {
142 int i;
143
144 for (i = 0; i < sizeof(oper_states)/sizeof(oper_states[0]); i++)
145 if (strcasecmp(name, oper_states[i]) == 0)
146 return i;
147 return -1;
148 }
149
150 static void print_queuelen(FILE *f, struct rtattr *tb[IFLA_MAX + 1])
151 {
152 int qlen;
153
154 if (tb[IFLA_TXQLEN])
155 qlen = *(int *)RTA_DATA(tb[IFLA_TXQLEN]);
156 else {
157 struct ifreq ifr;
158 int s = socket(AF_INET, SOCK_STREAM, 0);
159
160 if (s < 0)
161 return;
162
163 memset(&ifr, 0, sizeof(ifr));
164 strcpy(ifr.ifr_name, rta_getattr_str(tb[IFLA_IFNAME]));
165 if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
166 fprintf(f, "ioctl(SIOCGIFTXQLEN) failed: %s\n", strerror(errno));
167 close(s);
168 return;
169 }
170 close(s);
171 qlen = ifr.ifr_qlen;
172 }
173 if (qlen)
174 fprintf(f, "qlen %d", qlen);
175 }
176
177 static const char *link_modes[] = {
178 "DEFAULT", "DORMANT"
179 };
180
181 static void print_linkmode(FILE *f, struct rtattr *tb)
182 {
183 unsigned int mode = rta_getattr_u8(tb);
184
185 if (mode >= sizeof(link_modes) / sizeof(link_modes[0]))
186 fprintf(f, "mode %d ", mode);
187 else
188 fprintf(f, "mode %s ", link_modes[mode]);
189 }
190
191 static void print_linktype(FILE *fp, struct rtattr *tb)
192 {
193 struct rtattr *linkinfo[IFLA_INFO_MAX+1];
194 struct link_util *lu;
195 char *kind;
196
197 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
198
199 if (!linkinfo[IFLA_INFO_KIND])
200 return;
201 kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
202
203 fprintf(fp, "%s", _SL_);
204 fprintf(fp, " %s ", kind);
205
206 lu = get_link_kind(kind);
207 if (!lu || !lu->print_opt)
208 return;
209
210 if (1) {
211 struct rtattr *attr[lu->maxattr+1], **data = NULL;
212
213 if (linkinfo[IFLA_INFO_DATA]) {
214 parse_rtattr_nested(attr, lu->maxattr,
215 linkinfo[IFLA_INFO_DATA]);
216 data = attr;
217 }
218 lu->print_opt(lu, fp, data);
219
220 if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
221 lu->print_xstats)
222 lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
223 }
224 }
225
226 static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
227 {
228 struct ifla_vf_mac *vf_mac;
229 struct ifla_vf_vlan *vf_vlan;
230 struct ifla_vf_tx_rate *vf_tx_rate;
231 struct ifla_vf_spoofchk *vf_spoofchk;
232 struct ifla_vf_link_state *vf_linkstate;
233 struct rtattr *vf[IFLA_VF_MAX+1];
234 struct rtattr *tmp;
235 SPRINT_BUF(b1);
236
237 if (vfinfo->rta_type != IFLA_VF_INFO) {
238 fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
239 return;
240 }
241
242 parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
243
244 vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
245 vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
246 vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
247
248 /* Check if the spoof checking vf info type is supported by
249 * this kernel.
250 */
251 tmp = (struct rtattr *)((char *)vf[IFLA_VF_TX_RATE] +
252 vf[IFLA_VF_TX_RATE]->rta_len);
253
254 if (tmp->rta_type != IFLA_VF_SPOOFCHK)
255 vf_spoofchk = NULL;
256 else
257 vf_spoofchk = RTA_DATA(vf[IFLA_VF_SPOOFCHK]);
258
259 if (vf_spoofchk) {
260 /* Check if the link state vf info type is supported by
261 * this kernel.
262 */
263 tmp = (struct rtattr *)((char *)vf[IFLA_VF_SPOOFCHK] +
264 vf[IFLA_VF_SPOOFCHK]->rta_len);
265
266 if (tmp->rta_type != IFLA_VF_LINK_STATE)
267 vf_linkstate = NULL;
268 else
269 vf_linkstate = RTA_DATA(vf[IFLA_VF_LINK_STATE]);
270 } else
271 vf_linkstate = NULL;
272
273 fprintf(fp, "\n vf %d MAC %s", vf_mac->vf,
274 ll_addr_n2a((unsigned char *)&vf_mac->mac,
275 ETH_ALEN, 0, b1, sizeof(b1)));
276 if (vf_vlan->vlan)
277 fprintf(fp, ", vlan %d", vf_vlan->vlan);
278 if (vf_vlan->qos)
279 fprintf(fp, ", qos %d", vf_vlan->qos);
280 if (vf_tx_rate->rate)
281 fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
282 if (vf_spoofchk && vf_spoofchk->setting != -1) {
283 if (vf_spoofchk->setting)
284 fprintf(fp, ", spoof checking on");
285 else
286 fprintf(fp, ", spoof checking off");
287 }
288 if (vf_linkstate) {
289 if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_AUTO)
290 fprintf(fp, ", link-state auto");
291 else if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_ENABLE)
292 fprintf(fp, ", link-state enable");
293 else
294 fprintf(fp, ", link-state disable");
295 }
296 }
297
298 static void print_link_stats64(FILE *fp, const struct rtnl_link_stats64 *s) {
299 fprintf(fp, "%s", _SL_);
300 fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
301 s->rx_compressed ? "compressed" : "", _SL_);
302 fprintf(fp, " %-10"PRIu64" %-8"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64"",
303 (uint64_t)s->rx_bytes,
304 (uint64_t)s->rx_packets,
305 (uint64_t)s->rx_errors,
306 (uint64_t)s->rx_dropped,
307 (uint64_t)s->rx_over_errors,
308 (uint64_t)s->multicast);
309 if (s->rx_compressed)
310 fprintf(fp, " %-7"PRIu64"",
311 (uint64_t)s->rx_compressed);
312 if (show_stats > 1) {
313 fprintf(fp, "%s", _SL_);
314 fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
315 fprintf(fp, " %-7"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64"",
316 (uint64_t)s->rx_length_errors,
317 (uint64_t)s->rx_crc_errors,
318 (uint64_t)s->rx_frame_errors,
319 (uint64_t)s->rx_fifo_errors,
320 (uint64_t)s->rx_missed_errors);
321 }
322 fprintf(fp, "%s", _SL_);
323 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
324 (uint64_t)s->tx_compressed ? "compressed" : "", _SL_);
325 fprintf(fp, " %-10"PRIu64" %-8"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64"",
326 (uint64_t)s->tx_bytes,
327 (uint64_t)s->tx_packets,
328 (uint64_t)s->tx_errors,
329 (uint64_t)s->tx_dropped,
330 (uint64_t)s->tx_carrier_errors,
331 (uint64_t)s->collisions);
332 if (s->tx_compressed)
333 fprintf(fp, " %-7"PRIu64"",
334 (uint64_t)s->tx_compressed);
335 if (show_stats > 1) {
336 fprintf(fp, "%s", _SL_);
337 fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_);
338 fprintf(fp, " %-7"PRIu64" %-7"PRIu64" %-7"PRIu64" %-7"PRIu64"",
339 (uint64_t)s->tx_aborted_errors,
340 (uint64_t)s->tx_fifo_errors,
341 (uint64_t)s->tx_window_errors,
342 (uint64_t)s->tx_heartbeat_errors);
343 }
344 }
345
346 static void print_link_stats(FILE *fp, const struct rtnl_link_stats *s)
347 {
348 fprintf(fp, "%s", _SL_);
349 fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
350 s->rx_compressed ? "compressed" : "", _SL_);
351 fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u",
352 s->rx_bytes, s->rx_packets, s->rx_errors,
353 s->rx_dropped, s->rx_over_errors,
354 s->multicast
355 );
356 if (s->rx_compressed)
357 fprintf(fp, " %-7u", s->rx_compressed);
358 if (show_stats > 1) {
359 fprintf(fp, "%s", _SL_);
360 fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
361 fprintf(fp, " %-7u %-7u %-7u %-7u %-7u",
362 s->rx_length_errors,
363 s->rx_crc_errors,
364 s->rx_frame_errors,
365 s->rx_fifo_errors,
366 s->rx_missed_errors
367 );
368 }
369 fprintf(fp, "%s", _SL_);
370 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
371 s->tx_compressed ? "compressed" : "", _SL_);
372 fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u",
373 s->tx_bytes, s->tx_packets, s->tx_errors,
374 s->tx_dropped, s->tx_carrier_errors, s->collisions);
375 if (s->tx_compressed)
376 fprintf(fp, " %-7u", s->tx_compressed);
377 if (show_stats > 1) {
378 fprintf(fp, "%s", _SL_);
379 fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_);
380 fprintf(fp, " %-7u %-7u %-7u %-7u",
381 s->tx_aborted_errors,
382 s->tx_fifo_errors,
383 s->tx_window_errors,
384 s->tx_heartbeat_errors
385 );
386 }
387 }
388
389 int print_linkinfo(const struct sockaddr_nl *who,
390 struct nlmsghdr *n, void *arg)
391 {
392 FILE *fp = (FILE*)arg;
393 struct ifinfomsg *ifi = NLMSG_DATA(n);
394 struct rtattr * tb[IFLA_MAX+1];
395 int len = n->nlmsg_len;
396 unsigned m_flag = 0;
397
398 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
399 return 0;
400
401 len -= NLMSG_LENGTH(sizeof(*ifi));
402 if (len < 0)
403 return -1;
404
405 if (filter.ifindex && ifi->ifi_index != filter.ifindex)
406 return 0;
407 if (filter.up && !(ifi->ifi_flags&IFF_UP))
408 return 0;
409
410 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
411 if (tb[IFLA_IFNAME] == NULL) {
412 fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
413 }
414 if (filter.label &&
415 (!filter.family || filter.family == AF_PACKET) &&
416 fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
417 return 0;
418
419 if (tb[IFLA_GROUP]) {
420 int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
421 if (filter.group != -1 && group != filter.group)
422 return -1;
423 }
424
425 if (n->nlmsg_type == RTM_DELLINK)
426 fprintf(fp, "Deleted ");
427
428 fprintf(fp, "%d: %s", ifi->ifi_index,
429 tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
430
431 if (tb[IFLA_LINK]) {
432 SPRINT_BUF(b1);
433 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
434 if (iflink == 0)
435 fprintf(fp, "@NONE: ");
436 else {
437 fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
438 m_flag = ll_index_to_flags(iflink);
439 m_flag = !(m_flag & IFF_UP);
440 }
441 } else {
442 fprintf(fp, ": ");
443 }
444 print_link_flags(fp, ifi->ifi_flags, m_flag);
445
446 if (tb[IFLA_MTU])
447 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
448 if (tb[IFLA_QDISC])
449 fprintf(fp, "qdisc %s ", rta_getattr_str(tb[IFLA_QDISC]));
450 if (tb[IFLA_MASTER]) {
451 SPRINT_BUF(b1);
452 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
453 }
454
455 if (tb[IFLA_OPERSTATE])
456 print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
457
458 if (do_link && tb[IFLA_LINKMODE])
459 print_linkmode(fp, tb[IFLA_LINKMODE]);
460
461 if (tb[IFLA_GROUP]) {
462 SPRINT_BUF(b1);
463 int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
464 fprintf(fp, "group %s ", rtnl_group_n2a(group, b1, sizeof(b1)));
465 }
466
467 if (filter.showqueue)
468 print_queuelen(fp, tb);
469
470 if (!filter.family || filter.family == AF_PACKET) {
471 SPRINT_BUF(b1);
472 fprintf(fp, "%s", _SL_);
473 fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
474
475 if (tb[IFLA_ADDRESS]) {
476 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
477 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
478 ifi->ifi_type,
479 b1, sizeof(b1)));
480 }
481 if (tb[IFLA_BROADCAST]) {
482 if (ifi->ifi_flags&IFF_POINTOPOINT)
483 fprintf(fp, " peer ");
484 else
485 fprintf(fp, " brd ");
486 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
487 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
488 ifi->ifi_type,
489 b1, sizeof(b1)));
490 }
491 }
492
493 if (do_link && tb[IFLA_PROMISCUITY] && show_details)
494 fprintf(fp, " promiscuity %u ",
495 *(int*)RTA_DATA(tb[IFLA_PROMISCUITY]));
496
497 if (do_link && tb[IFLA_LINKINFO] && show_details)
498 print_linktype(fp, tb[IFLA_LINKINFO]);
499
500 if (do_link && tb[IFLA_IFALIAS]) {
501 fprintf(fp, "%s alias %s", _SL_,
502 rta_getattr_str(tb[IFLA_IFALIAS]));
503 }
504
505 if (do_link && show_stats) {
506 if (tb[IFLA_STATS64])
507 print_link_stats64(fp, RTA_DATA(tb[IFLA_STATS64]));
508 else if (tb[IFLA_STATS])
509 print_link_stats(fp, RTA_DATA(tb[IFLA_STATS]));
510 }
511
512 if (do_link && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
513 struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
514 int rem = RTA_PAYLOAD(vflist);
515 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
516 print_vfinfo(fp, i);
517 }
518
519 fprintf(fp, "\n");
520 fflush(fp);
521 return 0;
522 }
523
524 static int flush_update(void)
525 {
526 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
527 perror("Failed to send flush request");
528 return -1;
529 }
530 filter.flushp = 0;
531 return 0;
532 }
533
534 static int set_lifetime(unsigned int *lifetime, char *argv)
535 {
536 if (strcmp(argv, "forever") == 0)
537 *lifetime = INFINITY_LIFE_TIME;
538 else if (get_u32(lifetime, argv, 0))
539 return -1;
540
541 return 0;
542 }
543
544 static unsigned int get_ifa_flags(struct ifaddrmsg *ifa,
545 struct rtattr *ifa_flags_attr)
546 {
547 return ifa_flags_attr ? rta_getattr_u32(ifa_flags_attr) :
548 ifa->ifa_flags;
549 }
550
551 int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
552 void *arg)
553 {
554 FILE *fp = (FILE*)arg;
555 struct ifaddrmsg *ifa = NLMSG_DATA(n);
556 int len = n->nlmsg_len;
557 int deprecated = 0;
558 /* Use local copy of ifa_flags to not interfere with filtering code */
559 unsigned int ifa_flags;
560 struct rtattr * rta_tb[IFA_MAX+1];
561 char abuf[256];
562 SPRINT_BUF(b1);
563
564 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
565 return 0;
566 len -= NLMSG_LENGTH(sizeof(*ifa));
567 if (len < 0) {
568 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
569 return -1;
570 }
571
572 if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
573 return 0;
574
575 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
576
577 ifa_flags = get_ifa_flags(ifa, rta_tb[IFA_FLAGS]);
578
579 if (!rta_tb[IFA_LOCAL])
580 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
581 if (!rta_tb[IFA_ADDRESS])
582 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
583
584 if (filter.ifindex && filter.ifindex != ifa->ifa_index)
585 return 0;
586 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
587 return 0;
588 if ((filter.flags ^ ifa_flags) & filter.flagmask)
589 return 0;
590 if (filter.label) {
591 SPRINT_BUF(b1);
592 const char *label;
593 if (rta_tb[IFA_LABEL])
594 label = RTA_DATA(rta_tb[IFA_LABEL]);
595 else
596 label = ll_idx_n2a(ifa->ifa_index, b1);
597 if (fnmatch(filter.label, label, 0) != 0)
598 return 0;
599 }
600 if (filter.pfx.family) {
601 if (rta_tb[IFA_LOCAL]) {
602 inet_prefix dst;
603 memset(&dst, 0, sizeof(dst));
604 dst.family = ifa->ifa_family;
605 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
606 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
607 return 0;
608 }
609 }
610
611 if (filter.family && filter.family != ifa->ifa_family)
612 return 0;
613
614 if (filter.flushb) {
615 struct nlmsghdr *fn;
616 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
617 if (flush_update())
618 return -1;
619 }
620 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
621 memcpy(fn, n, n->nlmsg_len);
622 fn->nlmsg_type = RTM_DELADDR;
623 fn->nlmsg_flags = NLM_F_REQUEST;
624 fn->nlmsg_seq = ++rth.seq;
625 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
626 filter.flushed++;
627 if (show_stats < 2)
628 return 0;
629 }
630
631 if (n->nlmsg_type == RTM_DELADDR)
632 fprintf(fp, "Deleted ");
633
634 if (filter.oneline || filter.flushb)
635 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
636 if (ifa->ifa_family == AF_INET)
637 fprintf(fp, " inet ");
638 else if (ifa->ifa_family == AF_INET6)
639 fprintf(fp, " inet6 ");
640 else if (ifa->ifa_family == AF_DECnet)
641 fprintf(fp, " dnet ");
642 else if (ifa->ifa_family == AF_IPX)
643 fprintf(fp, " ipx ");
644 else
645 fprintf(fp, " family %d ", ifa->ifa_family);
646
647 if (rta_tb[IFA_LOCAL]) {
648 fprintf(fp, "%s", format_host(ifa->ifa_family,
649 RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
650 RTA_DATA(rta_tb[IFA_LOCAL]),
651 abuf, sizeof(abuf)));
652
653 if (rta_tb[IFA_ADDRESS] == NULL ||
654 memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]),
655 ifa->ifa_family == AF_INET ? 4 : 16) == 0) {
656 fprintf(fp, "/%d ", ifa->ifa_prefixlen);
657 } else {
658 fprintf(fp, " peer %s/%d ",
659 format_host(ifa->ifa_family,
660 RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
661 RTA_DATA(rta_tb[IFA_ADDRESS]),
662 abuf, sizeof(abuf)),
663 ifa->ifa_prefixlen);
664 }
665 }
666
667 if (rta_tb[IFA_BROADCAST]) {
668 fprintf(fp, "brd %s ",
669 format_host(ifa->ifa_family,
670 RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
671 RTA_DATA(rta_tb[IFA_BROADCAST]),
672 abuf, sizeof(abuf)));
673 }
674 if (rta_tb[IFA_ANYCAST]) {
675 fprintf(fp, "any %s ",
676 format_host(ifa->ifa_family,
677 RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
678 RTA_DATA(rta_tb[IFA_ANYCAST]),
679 abuf, sizeof(abuf)));
680 }
681 fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
682 if (ifa_flags & IFA_F_SECONDARY) {
683 ifa_flags &= ~IFA_F_SECONDARY;
684 if (ifa->ifa_family == AF_INET6)
685 fprintf(fp, "temporary ");
686 else
687 fprintf(fp, "secondary ");
688 }
689 if (ifa_flags & IFA_F_TENTATIVE) {
690 ifa_flags &= ~IFA_F_TENTATIVE;
691 fprintf(fp, "tentative ");
692 }
693 if (ifa_flags & IFA_F_DEPRECATED) {
694 ifa_flags &= ~IFA_F_DEPRECATED;
695 deprecated = 1;
696 fprintf(fp, "deprecated ");
697 }
698 if (ifa_flags & IFA_F_HOMEADDRESS) {
699 ifa_flags &= ~IFA_F_HOMEADDRESS;
700 fprintf(fp, "home ");
701 }
702 if (ifa_flags & IFA_F_NODAD) {
703 ifa_flags &= ~IFA_F_NODAD;
704 fprintf(fp, "nodad ");
705 }
706 if (!(ifa_flags & IFA_F_PERMANENT)) {
707 fprintf(fp, "dynamic ");
708 } else
709 ifa_flags &= ~IFA_F_PERMANENT;
710 if (ifa_flags & IFA_F_DADFAILED) {
711 ifa_flags &= ~IFA_F_DADFAILED;
712 fprintf(fp, "dadfailed ");
713 }
714 if (ifa_flags)
715 fprintf(fp, "flags %02x ", ifa_flags);
716 if (rta_tb[IFA_LABEL])
717 fprintf(fp, "%s", rta_getattr_str(rta_tb[IFA_LABEL]));
718 if (rta_tb[IFA_CACHEINFO]) {
719 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
720 fprintf(fp, "%s", _SL_);
721 fprintf(fp, " valid_lft ");
722 if (ci->ifa_valid == INFINITY_LIFE_TIME)
723 fprintf(fp, "forever");
724 else
725 fprintf(fp, "%usec", ci->ifa_valid);
726 fprintf(fp, " preferred_lft ");
727 if (ci->ifa_prefered == INFINITY_LIFE_TIME)
728 fprintf(fp, "forever");
729 else {
730 if (deprecated)
731 fprintf(fp, "%dsec", ci->ifa_prefered);
732 else
733 fprintf(fp, "%usec", ci->ifa_prefered);
734 }
735 }
736 fprintf(fp, "\n");
737 fflush(fp);
738 return 0;
739 }
740
741 static int print_addrinfo_primary(const struct sockaddr_nl *who,
742 struct nlmsghdr *n, void *arg)
743 {
744 struct ifaddrmsg *ifa = NLMSG_DATA(n);
745
746 if (ifa->ifa_flags & IFA_F_SECONDARY)
747 return 0;
748
749 return print_addrinfo(who, n, arg);
750 }
751
752 static int print_addrinfo_secondary(const struct sockaddr_nl *who,
753 struct nlmsghdr *n, void *arg)
754 {
755 struct ifaddrmsg *ifa = NLMSG_DATA(n);
756
757 if (!(ifa->ifa_flags & IFA_F_SECONDARY))
758 return 0;
759
760 return print_addrinfo(who, n, arg);
761 }
762
763 struct nlmsg_list
764 {
765 struct nlmsg_list *next;
766 struct nlmsghdr h;
767 };
768
769 struct nlmsg_chain
770 {
771 struct nlmsg_list *head;
772 struct nlmsg_list *tail;
773 };
774
775 static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
776 {
777 for ( ;ainfo ; ainfo = ainfo->next) {
778 struct nlmsghdr *n = &ainfo->h;
779 struct ifaddrmsg *ifa = NLMSG_DATA(n);
780
781 if (n->nlmsg_type != RTM_NEWADDR)
782 continue;
783
784 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
785 return -1;
786
787 if (ifa->ifa_index != ifindex ||
788 (filter.family && filter.family != ifa->ifa_family))
789 continue;
790
791 print_addrinfo(NULL, n, fp);
792 }
793 return 0;
794 }
795
796
797 static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
798 void *arg)
799 {
800 struct nlmsg_chain *lchain = (struct nlmsg_chain *)arg;
801 struct nlmsg_list *h;
802
803 h = malloc(n->nlmsg_len+sizeof(void*));
804 if (h == NULL)
805 return -1;
806
807 memcpy(&h->h, n, n->nlmsg_len);
808 h->next = NULL;
809
810 if (lchain->tail)
811 lchain->tail->next = h;
812 else
813 lchain->head = h;
814 lchain->tail = h;
815
816 ll_remember_index(who, n, NULL);
817 return 0;
818 }
819
820 static __u32 ipadd_dump_magic = 0x47361222;
821
822 static int ipadd_save_prep(void)
823 {
824 int ret;
825
826 if (isatty(STDOUT_FILENO)) {
827 fprintf(stderr, "Not sending a binary stream to stdout\n");
828 return -1;
829 }
830
831 ret = write(STDOUT_FILENO, &ipadd_dump_magic, sizeof(ipadd_dump_magic));
832 if (ret != sizeof(ipadd_dump_magic)) {
833 fprintf(stderr, "Can't write magic to dump file\n");
834 return -1;
835 }
836
837 return 0;
838 }
839
840 static int ipadd_dump_check_magic(void)
841 {
842 int ret;
843 __u32 magic = 0;
844
845 if (isatty(STDIN_FILENO)) {
846 fprintf(stderr, "Can't restore addr dump from a terminal\n");
847 return -1;
848 }
849
850 ret = fread(&magic, sizeof(magic), 1, stdin);
851 if (magic != ipadd_dump_magic) {
852 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
853 return -1;
854 }
855
856 return 0;
857 }
858
859 static int save_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
860 void *arg)
861 {
862 int ret;
863
864 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
865 if ((ret > 0) && (ret != n->nlmsg_len)) {
866 fprintf(stderr, "Short write while saving nlmsg\n");
867 ret = -EIO;
868 }
869
870 return ret == n->nlmsg_len ? 0 : ret;
871 }
872
873 static int show_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
874 {
875 struct ifaddrmsg *ifa = NLMSG_DATA(n);
876
877 printf("if%d:\n", ifa->ifa_index);
878 print_addrinfo(NULL, n, stdout);
879 return 0;
880 }
881
882 static int ipaddr_showdump(void)
883 {
884 if (ipadd_dump_check_magic())
885 exit(-1);
886
887 exit(rtnl_from_file(stdin, &show_handler, NULL));
888 }
889
890 static int restore_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
891 {
892 int ret;
893
894 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
895
896 ll_init_map(&rth);
897
898 ret = rtnl_talk(&rth, n, 0, 0, n);
899 if ((ret < 0) && (errno == EEXIST))
900 ret = 0;
901
902 return ret;
903 }
904
905 static int ipaddr_restore(void)
906 {
907 if (ipadd_dump_check_magic())
908 exit(-1);
909
910 exit(rtnl_from_file(stdin, &restore_handler, NULL));
911 }
912
913 static void free_nlmsg_chain(struct nlmsg_chain *info)
914 {
915 struct nlmsg_list *l, *n;
916
917 for (l = info->head; l; l = n) {
918 n = l->next;
919 free(l);
920 }
921 }
922
923 static void ipaddr_filter(struct nlmsg_chain *linfo, struct nlmsg_chain *ainfo)
924 {
925 struct nlmsg_list *l, **lp;
926
927 lp = &linfo->head;
928 while ( (l = *lp) != NULL) {
929 int ok = 0;
930 int missing_net_address = 1;
931 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
932 struct nlmsg_list *a;
933
934 for (a = ainfo->head; a; a = a->next) {
935 struct nlmsghdr *n = &a->h;
936 struct ifaddrmsg *ifa = NLMSG_DATA(n);
937 struct rtattr *tb[IFA_MAX + 1];
938 unsigned int ifa_flags;
939
940 if (ifa->ifa_index != ifi->ifi_index)
941 continue;
942 missing_net_address = 0;
943 if (filter.family && filter.family != ifa->ifa_family)
944 continue;
945 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
946 continue;
947
948 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
949 ifa_flags = get_ifa_flags(ifa, tb[IFA_FLAGS]);
950
951 if ((filter.flags ^ ifa_flags) & filter.flagmask)
952 continue;
953 if (filter.pfx.family || filter.label) {
954 if (!tb[IFA_LOCAL])
955 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
956
957 if (filter.pfx.family && tb[IFA_LOCAL]) {
958 inet_prefix dst;
959 memset(&dst, 0, sizeof(dst));
960 dst.family = ifa->ifa_family;
961 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
962 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
963 continue;
964 }
965 if (filter.label) {
966 SPRINT_BUF(b1);
967 const char *label;
968 if (tb[IFA_LABEL])
969 label = RTA_DATA(tb[IFA_LABEL]);
970 else
971 label = ll_idx_n2a(ifa->ifa_index, b1);
972 if (fnmatch(filter.label, label, 0) != 0)
973 continue;
974 }
975 }
976
977 ok = 1;
978 break;
979 }
980 if (missing_net_address &&
981 (filter.family == AF_UNSPEC || filter.family == AF_PACKET))
982 ok = 1;
983 if (!ok) {
984 *lp = l->next;
985 free(l);
986 } else
987 lp = &l->next;
988 }
989 }
990
991 static int ipaddr_flush(void)
992 {
993 int round = 0;
994 char flushb[4096-512];
995
996 filter.flushb = flushb;
997 filter.flushp = 0;
998 filter.flushe = sizeof(flushb);
999
1000 while ((max_flush_loops == 0) || (round < max_flush_loops)) {
1001 const struct rtnl_dump_filter_arg a[3] = {
1002 {
1003 .filter = print_addrinfo_secondary,
1004 .arg1 = stdout,
1005 },
1006 {
1007 .filter = print_addrinfo_primary,
1008 .arg1 = stdout,
1009 },
1010 {
1011 .filter = NULL,
1012 .arg1 = NULL,
1013 },
1014 };
1015 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
1016 perror("Cannot send dump request");
1017 exit(1);
1018 }
1019 filter.flushed = 0;
1020 if (rtnl_dump_filter_l(&rth, a) < 0) {
1021 fprintf(stderr, "Flush terminated\n");
1022 exit(1);
1023 }
1024 if (filter.flushed == 0) {
1025 flush_done:
1026 if (show_stats) {
1027 if (round == 0)
1028 printf("Nothing to flush.\n");
1029 else
1030 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1031 }
1032 fflush(stdout);
1033 return 0;
1034 }
1035 round++;
1036 if (flush_update() < 0)
1037 return 1;
1038
1039 if (show_stats) {
1040 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
1041 fflush(stdout);
1042 }
1043
1044 /* If we are flushing, and specifying primary, then we
1045 * want to flush only a single round. Otherwise, we'll
1046 * start flushing secondaries that were promoted to
1047 * primaries.
1048 */
1049 if (!(filter.flags & IFA_F_SECONDARY) && (filter.flagmask & IFA_F_SECONDARY))
1050 goto flush_done;
1051 }
1052 fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", max_flush_loops);
1053 fflush(stderr);
1054 return 1;
1055 }
1056
1057 static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
1058 {
1059 struct nlmsg_chain linfo = { NULL, NULL};
1060 struct nlmsg_chain ainfo = { NULL, NULL};
1061 struct nlmsg_list *l;
1062 char *filter_dev = NULL;
1063 int no_link = 0;
1064
1065 ipaddr_reset_filter(oneline);
1066 filter.showqueue = 1;
1067
1068 if (filter.family == AF_UNSPEC)
1069 filter.family = preferred_family;
1070
1071 filter.group = -1;
1072
1073 if (action == IPADD_FLUSH) {
1074 if (argc <= 0) {
1075 fprintf(stderr, "Flush requires arguments.\n");
1076
1077 return -1;
1078 }
1079 if (filter.family == AF_PACKET) {
1080 fprintf(stderr, "Cannot flush link addresses.\n");
1081 return -1;
1082 }
1083 }
1084
1085 while (argc > 0) {
1086 if (strcmp(*argv, "to") == 0) {
1087 NEXT_ARG();
1088 get_prefix(&filter.pfx, *argv, filter.family);
1089 if (filter.family == AF_UNSPEC)
1090 filter.family = filter.pfx.family;
1091 } else if (strcmp(*argv, "scope") == 0) {
1092 unsigned scope = 0;
1093 NEXT_ARG();
1094 filter.scopemask = -1;
1095 if (rtnl_rtscope_a2n(&scope, *argv)) {
1096 if (strcmp(*argv, "all") != 0)
1097 invarg("invalid \"scope\"\n", *argv);
1098 scope = RT_SCOPE_NOWHERE;
1099 filter.scopemask = 0;
1100 }
1101 filter.scope = scope;
1102 } else if (strcmp(*argv, "up") == 0) {
1103 filter.up = 1;
1104 } else if (strcmp(*argv, "dynamic") == 0) {
1105 filter.flags &= ~IFA_F_PERMANENT;
1106 filter.flagmask |= IFA_F_PERMANENT;
1107 } else if (strcmp(*argv, "permanent") == 0) {
1108 filter.flags |= IFA_F_PERMANENT;
1109 filter.flagmask |= IFA_F_PERMANENT;
1110 } else if (strcmp(*argv, "secondary") == 0 ||
1111 strcmp(*argv, "temporary") == 0) {
1112 filter.flags |= IFA_F_SECONDARY;
1113 filter.flagmask |= IFA_F_SECONDARY;
1114 } else if (strcmp(*argv, "primary") == 0) {
1115 filter.flags &= ~IFA_F_SECONDARY;
1116 filter.flagmask |= IFA_F_SECONDARY;
1117 } else if (strcmp(*argv, "tentative") == 0) {
1118 filter.flags |= IFA_F_TENTATIVE;
1119 filter.flagmask |= IFA_F_TENTATIVE;
1120 } else if (strcmp(*argv, "deprecated") == 0) {
1121 filter.flags |= IFA_F_DEPRECATED;
1122 filter.flagmask |= IFA_F_DEPRECATED;
1123 } else if (strcmp(*argv, "home") == 0) {
1124 filter.flags |= IFA_F_HOMEADDRESS;
1125 filter.flagmask |= IFA_F_HOMEADDRESS;
1126 } else if (strcmp(*argv, "nodad") == 0) {
1127 filter.flags |= IFA_F_NODAD;
1128 filter.flagmask |= IFA_F_NODAD;
1129 } else if (strcmp(*argv, "dadfailed") == 0) {
1130 filter.flags |= IFA_F_DADFAILED;
1131 filter.flagmask |= IFA_F_DADFAILED;
1132 } else if (strcmp(*argv, "label") == 0) {
1133 NEXT_ARG();
1134 filter.label = *argv;
1135 } else if (strcmp(*argv, "group") == 0) {
1136 NEXT_ARG();
1137 if (rtnl_group_a2n(&filter.group, *argv))
1138 invarg("Invalid \"group\" value\n", *argv);
1139 } else {
1140 if (strcmp(*argv, "dev") == 0) {
1141 NEXT_ARG();
1142 }
1143 if (matches(*argv, "help") == 0)
1144 usage();
1145 if (filter_dev)
1146 duparg2("dev", *argv);
1147 filter_dev = *argv;
1148 }
1149 argv++; argc--;
1150 }
1151
1152 if (filter_dev) {
1153 filter.ifindex = ll_name_to_index(filter_dev);
1154 if (filter.ifindex <= 0) {
1155 fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
1156 return -1;
1157 }
1158 }
1159
1160 if (action == IPADD_FLUSH)
1161 return ipaddr_flush();
1162
1163 if (action == IPADD_SAVE) {
1164 if (ipadd_save_prep())
1165 exit(1);
1166
1167 if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETADDR) < 0) {
1168 perror("Cannot send dump request");
1169 exit(1);
1170 }
1171
1172 if (rtnl_dump_filter(&rth, save_nlmsg, stdout) < 0) {
1173 fprintf(stderr, "Save terminated\n");
1174 exit(1);
1175 }
1176
1177 exit(0);
1178 }
1179
1180 if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
1181 perror("Cannot send dump request");
1182 exit(1);
1183 }
1184
1185 if (rtnl_dump_filter(&rth, store_nlmsg, &linfo) < 0) {
1186 fprintf(stderr, "Dump terminated\n");
1187 exit(1);
1188 }
1189
1190 if (filter.family != AF_PACKET) {
1191 if (filter.oneline)
1192 no_link = 1;
1193
1194 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
1195 perror("Cannot send dump request");
1196 exit(1);
1197 }
1198
1199 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo) < 0) {
1200 fprintf(stderr, "Dump terminated\n");
1201 exit(1);
1202 }
1203
1204 ipaddr_filter(&linfo, &ainfo);
1205 }
1206
1207 for (l = linfo.head; l; l = l->next) {
1208 if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
1209 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
1210 if (filter.family != AF_PACKET)
1211 print_selected_addrinfo(ifi->ifi_index,
1212 ainfo.head, stdout);
1213 }
1214 }
1215 fflush(stdout);
1216
1217 free_nlmsg_chain(&ainfo);
1218 free_nlmsg_chain(&linfo);
1219
1220 return 0;
1221 }
1222
1223 int ipaddr_list_link(int argc, char **argv)
1224 {
1225 preferred_family = AF_PACKET;
1226 do_link = 1;
1227 return ipaddr_list_flush_or_save(argc, argv, IPADD_LIST);
1228 }
1229
1230 void ipaddr_reset_filter(int oneline)
1231 {
1232 memset(&filter, 0, sizeof(filter));
1233 filter.oneline = oneline;
1234 }
1235
1236 static int default_scope(inet_prefix *lcl)
1237 {
1238 if (lcl->family == AF_INET) {
1239 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
1240 return RT_SCOPE_HOST;
1241 }
1242 return 0;
1243 }
1244
1245 static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
1246 {
1247 struct {
1248 struct nlmsghdr n;
1249 struct ifaddrmsg ifa;
1250 char buf[256];
1251 } req;
1252 char *d = NULL;
1253 char *l = NULL;
1254 char *lcl_arg = NULL;
1255 char *valid_lftp = NULL;
1256 char *preferred_lftp = NULL;
1257 inet_prefix lcl;
1258 inet_prefix peer;
1259 int local_len = 0;
1260 int peer_len = 0;
1261 int brd_len = 0;
1262 int any_len = 0;
1263 int scoped = 0;
1264 __u32 preferred_lft = INFINITY_LIFE_TIME;
1265 __u32 valid_lft = INFINITY_LIFE_TIME;
1266 struct ifa_cacheinfo cinfo;
1267 unsigned int ifa_flags = 0;
1268
1269 memset(&req, 0, sizeof(req));
1270
1271 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
1272 req.n.nlmsg_flags = NLM_F_REQUEST | flags;
1273 req.n.nlmsg_type = cmd;
1274 req.ifa.ifa_family = preferred_family;
1275
1276 while (argc > 0) {
1277 if (strcmp(*argv, "peer") == 0 ||
1278 strcmp(*argv, "remote") == 0) {
1279 NEXT_ARG();
1280
1281 if (peer_len)
1282 duparg("peer", *argv);
1283 get_prefix(&peer, *argv, req.ifa.ifa_family);
1284 peer_len = peer.bytelen;
1285 if (req.ifa.ifa_family == AF_UNSPEC)
1286 req.ifa.ifa_family = peer.family;
1287 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
1288 req.ifa.ifa_prefixlen = peer.bitlen;
1289 } else if (matches(*argv, "broadcast") == 0 ||
1290 strcmp(*argv, "brd") == 0) {
1291 inet_prefix addr;
1292 NEXT_ARG();
1293 if (brd_len)
1294 duparg("broadcast", *argv);
1295 if (strcmp(*argv, "+") == 0)
1296 brd_len = -1;
1297 else if (strcmp(*argv, "-") == 0)
1298 brd_len = -2;
1299 else {
1300 get_addr(&addr, *argv, req.ifa.ifa_family);
1301 if (req.ifa.ifa_family == AF_UNSPEC)
1302 req.ifa.ifa_family = addr.family;
1303 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
1304 brd_len = addr.bytelen;
1305 }
1306 } else if (strcmp(*argv, "anycast") == 0) {
1307 inet_prefix addr;
1308 NEXT_ARG();
1309 if (any_len)
1310 duparg("anycast", *argv);
1311 get_addr(&addr, *argv, req.ifa.ifa_family);
1312 if (req.ifa.ifa_family == AF_UNSPEC)
1313 req.ifa.ifa_family = addr.family;
1314 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
1315 any_len = addr.bytelen;
1316 } else if (strcmp(*argv, "scope") == 0) {
1317 unsigned scope = 0;
1318 NEXT_ARG();
1319 if (rtnl_rtscope_a2n(&scope, *argv))
1320 invarg("invalid scope value.", *argv);
1321 req.ifa.ifa_scope = scope;
1322 scoped = 1;
1323 } else if (strcmp(*argv, "dev") == 0) {
1324 NEXT_ARG();
1325 d = *argv;
1326 } else if (strcmp(*argv, "label") == 0) {
1327 NEXT_ARG();
1328 l = *argv;
1329 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
1330 } else if (matches(*argv, "valid_lft") == 0) {
1331 if (valid_lftp)
1332 duparg("valid_lft", *argv);
1333 NEXT_ARG();
1334 valid_lftp = *argv;
1335 if (set_lifetime(&valid_lft, *argv))
1336 invarg("valid_lft value", *argv);
1337 } else if (matches(*argv, "preferred_lft") == 0) {
1338 if (preferred_lftp)
1339 duparg("preferred_lft", *argv);
1340 NEXT_ARG();
1341 preferred_lftp = *argv;
1342 if (set_lifetime(&preferred_lft, *argv))
1343 invarg("preferred_lft value", *argv);
1344 } else if (strcmp(*argv, "home") == 0) {
1345 ifa_flags |= IFA_F_HOMEADDRESS;
1346 } else if (strcmp(*argv, "nodad") == 0) {
1347 ifa_flags |= IFA_F_NODAD;
1348 } else {
1349 if (strcmp(*argv, "local") == 0) {
1350 NEXT_ARG();
1351 }
1352 if (matches(*argv, "help") == 0)
1353 usage();
1354 if (local_len)
1355 duparg2("local", *argv);
1356 lcl_arg = *argv;
1357 get_prefix(&lcl, *argv, req.ifa.ifa_family);
1358 if (req.ifa.ifa_family == AF_UNSPEC)
1359 req.ifa.ifa_family = lcl.family;
1360 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
1361 local_len = lcl.bytelen;
1362 }
1363 argc--; argv++;
1364 }
1365 req.ifa.ifa_flags = ifa_flags;
1366 addattr32(&req.n, sizeof(req), IFA_FLAGS, ifa_flags);
1367
1368 if (d == NULL) {
1369 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
1370 return -1;
1371 }
1372 if (l && matches(d, l) != 0) {
1373 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
1374 return -1;
1375 }
1376
1377 if (peer_len == 0 && local_len) {
1378 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
1379 fprintf(stderr,
1380 "Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
1381 " Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
1382 " This special behaviour is likely to disappear in further releases,\n" \
1383 " fix your scripts!\n", lcl_arg, local_len*8);
1384 } else {
1385 peer = lcl;
1386 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
1387 }
1388 }
1389 if (req.ifa.ifa_prefixlen == 0)
1390 req.ifa.ifa_prefixlen = lcl.bitlen;
1391
1392 if (brd_len < 0 && cmd != RTM_DELADDR) {
1393 inet_prefix brd;
1394 int i;
1395 if (req.ifa.ifa_family != AF_INET) {
1396 fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
1397 return -1;
1398 }
1399 brd = peer;
1400 if (brd.bitlen <= 30) {
1401 for (i=31; i>=brd.bitlen; i--) {
1402 if (brd_len == -1)
1403 brd.data[0] |= htonl(1<<(31-i));
1404 else
1405 brd.data[0] &= ~htonl(1<<(31-i));
1406 }
1407 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
1408 brd_len = brd.bytelen;
1409 }
1410 }
1411 if (!scoped && cmd != RTM_DELADDR)
1412 req.ifa.ifa_scope = default_scope(&lcl);
1413
1414 if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
1415 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1416 return -1;
1417 }
1418
1419 if (valid_lftp || preferred_lftp) {
1420 if (!valid_lft) {
1421 fprintf(stderr, "valid_lft is zero\n");
1422 return -1;
1423 }
1424 if (valid_lft < preferred_lft) {
1425 fprintf(stderr, "preferred_lft is greater than valid_lft\n");
1426 return -1;
1427 }
1428
1429 memset(&cinfo, 0, sizeof(cinfo));
1430 cinfo.ifa_prefered = preferred_lft;
1431 cinfo.ifa_valid = valid_lft;
1432 addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
1433 sizeof(cinfo));
1434 }
1435
1436 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
1437 return -2;
1438
1439 return 0;
1440 }
1441
1442 int do_ipaddr(int argc, char **argv)
1443 {
1444 if (argc < 1)
1445 return ipaddr_list_flush_or_save(0, NULL, IPADD_LIST);
1446 if (matches(*argv, "add") == 0)
1447 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
1448 if (matches(*argv, "change") == 0 ||
1449 strcmp(*argv, "chg") == 0)
1450 return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
1451 if (matches(*argv, "replace") == 0)
1452 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
1453 if (matches(*argv, "delete") == 0)
1454 return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
1455 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1456 || matches(*argv, "lst") == 0)
1457 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_LIST);
1458 if (matches(*argv, "flush") == 0)
1459 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_FLUSH);
1460 if (matches(*argv, "save") == 0)
1461 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_SAVE);
1462 if (matches(*argv, "showdump") == 0)
1463 return ipaddr_showdump();
1464 if (matches(*argv, "restore") == 0)
1465 return ipaddr_restore();
1466 if (matches(*argv, "help") == 0)
1467 usage();
1468 fprintf(stderr, "Command \"%s\" is unknown, try \"ip addr help\".\n", *argv);
1469 exit(-1);
1470 }
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