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 #include <linux/net_namespace.h>
32
33 #include "rt_names.h"
34 #include "utils.h"
35 #include "ll_map.h"
36 #include "ip_common.h"
37 #include "color.h"
38
39 enum {
40 IPADD_LIST,
41 IPADD_FLUSH,
42 IPADD_SAVE,
43 };
44
45 static struct
46 {
47 int ifindex;
48 int family;
49 int oneline;
50 int showqueue;
51 inet_prefix pfx;
52 int scope, scopemask;
53 int flags, flagmask;
54 int up;
55 char *label;
56 int flushed;
57 char *flushb;
58 int flushp;
59 int flushe;
60 int group;
61 int master;
62 char *kind;
63 } filter;
64
65 static int do_link;
66
67 static void usage(void) __attribute__((noreturn));
68
usage(void)69 static void usage(void)
70 {
71 if (do_link) {
72 iplink_usage();
73 }
74 fprintf(stderr, "Usage: ip address {add|change|replace} IFADDR dev IFNAME [ LIFETIME ]\n");
75 fprintf(stderr, " [ CONFFLAG-LIST ]\n");
76 fprintf(stderr, " ip address del IFADDR dev IFNAME [mngtmpaddr]\n");
77 fprintf(stderr, " ip address {show|save|flush} [ dev IFNAME ] [ scope SCOPE-ID ]\n");
78 fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label LABEL ] [up]\n");
79 fprintf(stderr, " ip address {showdump|restore}\n");
80 fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
81 fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n");
82 fprintf(stderr, " [ label IFNAME ] [ scope SCOPE-ID ]\n");
83 fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
84 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
85 fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n");
86 fprintf(stderr, " [-]tentative | [-]deprecated | [-]dadfailed | temporary |\n");
87 fprintf(stderr, " CONFFLAG-LIST ]\n");
88 fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
89 fprintf(stderr, "CONFFLAG := [ home | nodad | mngtmpaddr | noprefixroute | autojoin ]\n");
90 fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
91 fprintf(stderr, "LFT := forever | SECONDS\n");
92
93 exit(-1);
94 }
95
print_link_flags(FILE * fp,unsigned flags,unsigned mdown)96 static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
97 {
98 fprintf(fp, "<");
99 if (flags & IFF_UP && !(flags & IFF_RUNNING))
100 fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
101 flags &= ~IFF_RUNNING;
102 #define _PF(f) if (flags&IFF_##f) { \
103 flags &= ~IFF_##f ; \
104 fprintf(fp, #f "%s", flags ? "," : ""); }
105 _PF(LOOPBACK);
106 _PF(BROADCAST);
107 _PF(POINTOPOINT);
108 _PF(MULTICAST);
109 _PF(NOARP);
110 _PF(ALLMULTI);
111 _PF(PROMISC);
112 _PF(MASTER);
113 _PF(SLAVE);
114 _PF(DEBUG);
115 _PF(DYNAMIC);
116 _PF(AUTOMEDIA);
117 _PF(PORTSEL);
118 _PF(NOTRAILERS);
119 _PF(UP);
120 _PF(LOWER_UP);
121 _PF(DORMANT);
122 _PF(ECHO);
123 #undef _PF
124 if (flags)
125 fprintf(fp, "%x", flags);
126 if (mdown)
127 fprintf(fp, ",M-DOWN");
128 fprintf(fp, "> ");
129 }
130
131 static const char *oper_states[] = {
132 "UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
133 "TESTING", "DORMANT", "UP"
134 };
135
print_operstate(FILE * f,__u8 state)136 static void print_operstate(FILE *f, __u8 state)
137 {
138 if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
139 fprintf(f, "state %#x ", state);
140 else {
141 if (brief) {
142 if (strcmp(oper_states[state], "UP") == 0)
143 color_fprintf(f, COLOR_OPERSTATE_UP, "%-14s ", oper_states[state]);
144 else if (strcmp(oper_states[state], "DOWN") == 0)
145 color_fprintf(f, COLOR_OPERSTATE_DOWN, "%-14s ", oper_states[state]);
146 else
147 fprintf(f, "%-14s ", oper_states[state]);
148 } else {
149 fprintf(f, "state ");
150 if (strcmp(oper_states[state], "UP") == 0)
151 color_fprintf(f, COLOR_OPERSTATE_UP, "%s ", oper_states[state]);
152 else if (strcmp(oper_states[state], "DOWN") == 0)
153 color_fprintf(f, COLOR_OPERSTATE_DOWN, "%s ", oper_states[state]);
154 else
155 fprintf(f, "%s ", oper_states[state]);
156 }
157 }
158 }
159
get_operstate(const char * name)160 int get_operstate(const char *name)
161 {
162 int i;
163
164 for (i = 0; i < sizeof(oper_states)/sizeof(oper_states[0]); i++)
165 if (strcasecmp(name, oper_states[i]) == 0)
166 return i;
167 return -1;
168 }
169
print_queuelen(FILE * f,struct rtattr * tb[IFLA_MAX+1])170 static void print_queuelen(FILE *f, struct rtattr *tb[IFLA_MAX + 1])
171 {
172 int qlen;
173
174 if (tb[IFLA_TXQLEN])
175 qlen = *(int *)RTA_DATA(tb[IFLA_TXQLEN]);
176 else {
177 struct ifreq ifr;
178 int s = socket(AF_INET, SOCK_STREAM, 0);
179
180 if (s < 0)
181 return;
182
183 memset(&ifr, 0, sizeof(ifr));
184 strcpy(ifr.ifr_name, rta_getattr_str(tb[IFLA_IFNAME]));
185 if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
186 fprintf(f, "ioctl(SIOCGIFTXQLEN) failed: %s\n", strerror(errno));
187 close(s);
188 return;
189 }
190 close(s);
191 qlen = ifr.ifr_qlen;
192 }
193 if (qlen)
194 fprintf(f, "qlen %d", qlen);
195 }
196
197 static const char *link_modes[] = {
198 "DEFAULT", "DORMANT"
199 };
200
print_linkmode(FILE * f,struct rtattr * tb)201 static void print_linkmode(FILE *f, struct rtattr *tb)
202 {
203 unsigned int mode = rta_getattr_u8(tb);
204
205 if (mode >= sizeof(link_modes) / sizeof(link_modes[0]))
206 fprintf(f, "mode %d ", mode);
207 else
208 fprintf(f, "mode %s ", link_modes[mode]);
209 }
210
parse_link_kind(struct rtattr * tb)211 static char *parse_link_kind(struct rtattr *tb)
212 {
213 struct rtattr *linkinfo[IFLA_INFO_MAX+1];
214
215 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
216
217 if (linkinfo[IFLA_INFO_KIND])
218 return RTA_DATA(linkinfo[IFLA_INFO_KIND]);
219
220 return "";
221 }
222
print_linktype(FILE * fp,struct rtattr * tb)223 static void print_linktype(FILE *fp, struct rtattr *tb)
224 {
225 struct rtattr *linkinfo[IFLA_INFO_MAX+1];
226 struct link_util *lu;
227 struct link_util *slave_lu;
228 char *kind;
229 char *slave_kind;
230
231 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
232
233 if (linkinfo[IFLA_INFO_KIND]) {
234 kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
235
236 fprintf(fp, "%s", _SL_);
237 fprintf(fp, " %s ", kind);
238
239 lu = get_link_kind(kind);
240 if (lu && lu->print_opt) {
241 struct rtattr *attr[lu->maxattr+1], **data = NULL;
242
243 if (linkinfo[IFLA_INFO_DATA]) {
244 parse_rtattr_nested(attr, lu->maxattr,
245 linkinfo[IFLA_INFO_DATA]);
246 data = attr;
247 }
248 lu->print_opt(lu, fp, data);
249
250 if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
251 lu->print_xstats)
252 lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
253 }
254 }
255
256 if (linkinfo[IFLA_INFO_SLAVE_KIND]) {
257 slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]);
258
259 fprintf(fp, "%s", _SL_);
260 fprintf(fp, " %s_slave ", slave_kind);
261
262 slave_lu = get_link_slave_kind(slave_kind);
263 if (slave_lu && slave_lu->print_opt) {
264 struct rtattr *attr[slave_lu->maxattr+1], **data = NULL;
265
266 if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
267 parse_rtattr_nested(attr, slave_lu->maxattr,
268 linkinfo[IFLA_INFO_SLAVE_DATA]);
269 data = attr;
270 }
271 slave_lu->print_opt(slave_lu, fp, data);
272 }
273 }
274 }
275
print_af_spec(FILE * fp,struct rtattr * af_spec_attr)276 static void print_af_spec(FILE *fp, struct rtattr *af_spec_attr)
277 {
278 struct rtattr *inet6_attr;
279 struct rtattr *tb[IFLA_INET6_MAX + 1];
280
281 inet6_attr = parse_rtattr_one_nested(AF_INET6, af_spec_attr);
282 if (!inet6_attr)
283 return;
284
285 parse_rtattr_nested(tb, IFLA_INET6_MAX, inet6_attr);
286
287 if (tb[IFLA_INET6_ADDR_GEN_MODE]) {
288 __u8 mode = rta_getattr_u8(tb[IFLA_INET6_ADDR_GEN_MODE]);
289 switch (mode) {
290 case IN6_ADDR_GEN_MODE_EUI64:
291 fprintf(fp, "addrgenmode eui64 ");
292 break;
293 case IN6_ADDR_GEN_MODE_NONE:
294 fprintf(fp, "addrgenmode none ");
295 break;
296 case IN6_ADDR_GEN_MODE_STABLE_PRIVACY:
297 fprintf(fp, "addrgenmode stable_secret ");
298 break;
299 case IN6_ADDR_GEN_MODE_RANDOM:
300 fprintf(fp, "addrgenmode random ");
301 break;
302 default:
303 fprintf(fp, "addrgenmode %#.2hhx ", mode);
304 break;
305 }
306 }
307 }
308
309 static void print_vf_stats64(FILE *fp, struct rtattr *vfstats);
310
print_vfinfo(FILE * fp,struct rtattr * vfinfo)311 static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
312 {
313 struct ifla_vf_mac *vf_mac;
314 struct ifla_vf_vlan *vf_vlan;
315 struct ifla_vf_tx_rate *vf_tx_rate;
316 struct ifla_vf_spoofchk *vf_spoofchk;
317 struct ifla_vf_link_state *vf_linkstate;
318 struct rtattr *vf[IFLA_VF_MAX + 1] = {};
319 struct rtattr *tmp;
320 SPRINT_BUF(b1);
321
322 if (vfinfo->rta_type != IFLA_VF_INFO) {
323 fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
324 return;
325 }
326
327 parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
328
329 vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
330 vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
331 vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
332
333 /* Check if the spoof checking vf info type is supported by
334 * this kernel.
335 */
336 tmp = (struct rtattr *)((char *)vf[IFLA_VF_TX_RATE] +
337 vf[IFLA_VF_TX_RATE]->rta_len);
338
339 if (tmp->rta_type != IFLA_VF_SPOOFCHK)
340 vf_spoofchk = NULL;
341 else
342 vf_spoofchk = RTA_DATA(vf[IFLA_VF_SPOOFCHK]);
343
344 if (vf_spoofchk) {
345 /* Check if the link state vf info type is supported by
346 * this kernel.
347 */
348 tmp = (struct rtattr *)((char *)vf[IFLA_VF_SPOOFCHK] +
349 vf[IFLA_VF_SPOOFCHK]->rta_len);
350
351 if (tmp->rta_type != IFLA_VF_LINK_STATE)
352 vf_linkstate = NULL;
353 else
354 vf_linkstate = RTA_DATA(vf[IFLA_VF_LINK_STATE]);
355 } else
356 vf_linkstate = NULL;
357
358 fprintf(fp, "%s vf %d MAC %s", _SL_, vf_mac->vf,
359 ll_addr_n2a((unsigned char *)&vf_mac->mac,
360 ETH_ALEN, 0, b1, sizeof(b1)));
361 if (vf_vlan->vlan)
362 fprintf(fp, ", vlan %d", vf_vlan->vlan);
363 if (vf_vlan->qos)
364 fprintf(fp, ", qos %d", vf_vlan->qos);
365 if (vf_tx_rate->rate)
366 fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
367
368 if (vf[IFLA_VF_RATE]) {
369 struct ifla_vf_rate *vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
370
371 if (vf_rate->max_tx_rate)
372 fprintf(fp, ", max_tx_rate %dMbps", vf_rate->max_tx_rate);
373 if (vf_rate->min_tx_rate)
374 fprintf(fp, ", min_tx_rate %dMbps", vf_rate->min_tx_rate);
375 }
376
377 if (vf_spoofchk && vf_spoofchk->setting != -1) {
378 if (vf_spoofchk->setting)
379 fprintf(fp, ", spoof checking on");
380 else
381 fprintf(fp, ", spoof checking off");
382 }
383 if (vf_linkstate) {
384 if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_AUTO)
385 fprintf(fp, ", link-state auto");
386 else if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_ENABLE)
387 fprintf(fp, ", link-state enable");
388 else
389 fprintf(fp, ", link-state disable");
390 }
391 if (vf[IFLA_VF_STATS] && show_stats)
392 print_vf_stats64(fp, vf[IFLA_VF_STATS]);
393 }
394
print_num(FILE * fp,unsigned width,uint64_t count)395 static void print_num(FILE *fp, unsigned width, uint64_t count)
396 {
397 const char *prefix = "kMGTPE";
398 const unsigned int base = use_iec ? 1024 : 1000;
399 uint64_t powi = 1;
400 uint16_t powj = 1;
401 uint8_t precision = 2;
402 char buf[64];
403
404 if (!human_readable || count < base) {
405 fprintf(fp, "%-*"PRIu64" ", width, count);
406 return;
407 }
408
409 /* increase value by a factor of 1000/1024 and print
410 * if result is something a human can read */
411 for(;;) {
412 powi *= base;
413 if (count / base < powi)
414 break;
415
416 if (!prefix[1])
417 break;
418 ++prefix;
419 }
420
421 /* try to guess a good number of digits for precision */
422 for (; precision > 0; precision--) {
423 powj *= 10;
424 if (count / powi < powj)
425 break;
426 }
427
428 snprintf(buf, sizeof(buf), "%.*f%c%s", precision,
429 (double) count / powi, *prefix, use_iec ? "i" : "");
430
431 fprintf(fp, "%-*s ", width, buf);
432 }
433
print_vf_stats64(FILE * fp,struct rtattr * vfstats)434 static void print_vf_stats64(FILE *fp, struct rtattr *vfstats)
435 {
436 struct rtattr *vf[IFLA_VF_STATS_MAX + 1] = {};
437
438 if (vfstats->rta_type != IFLA_VF_STATS) {
439 fprintf(stderr, "BUG: rta type is %d\n", vfstats->rta_type);
440 return;
441 }
442
443 parse_rtattr_nested(vf, IFLA_VF_MAX, vfstats);
444
445 /* RX stats */
446 fprintf(fp, "%s", _SL_);
447 fprintf(fp, " RX: bytes packets mcast bcast %s", _SL_);
448 fprintf(fp, " ");
449
450 print_num(fp, 10, *(__u64 *)RTA_DATA(vf[IFLA_VF_STATS_RX_BYTES]));
451 print_num(fp, 8, *(__u64 *)RTA_DATA(vf[IFLA_VF_STATS_RX_PACKETS]));
452 print_num(fp, 7, *(__u64 *)RTA_DATA(vf[IFLA_VF_STATS_MULTICAST]));
453 print_num(fp, 7, *(__u64 *)RTA_DATA(vf[IFLA_VF_STATS_BROADCAST]));
454
455 /* TX stats */
456 fprintf(fp, "%s", _SL_);
457 fprintf(fp, " TX: bytes packets %s", _SL_);
458 fprintf(fp, " ");
459
460 print_num(fp, 10, *(__u64 *)RTA_DATA(vf[IFLA_VF_STATS_TX_BYTES]));
461 print_num(fp, 8, *(__u64 *)RTA_DATA(vf[IFLA_VF_STATS_TX_PACKETS]));
462 }
463
print_link_stats64(FILE * fp,const struct rtnl_link_stats64 * s,const struct rtattr * carrier_changes)464 static void print_link_stats64(FILE *fp, const struct rtnl_link_stats64 *s,
465 const struct rtattr *carrier_changes)
466 {
467 /* RX stats */
468 fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
469 s->rx_compressed ? "compressed" : "", _SL_);
470
471 fprintf(fp, " ");
472 print_num(fp, 10, s->rx_bytes);
473 print_num(fp, 8, s->rx_packets);
474 print_num(fp, 7, s->rx_errors);
475 print_num(fp, 7, s->rx_dropped);
476 print_num(fp, 7, s->rx_over_errors);
477 print_num(fp, 7, s->multicast);
478 if (s->rx_compressed)
479 print_num(fp, 7, s->rx_compressed);
480
481 /* RX error stats */
482 if (show_stats > 1) {
483 fprintf(fp, "%s", _SL_);
484 fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
485
486 fprintf(fp, " ");
487 print_num(fp, 8, s->rx_length_errors);
488 print_num(fp, 7, s->rx_crc_errors);
489 print_num(fp, 7, s->rx_frame_errors);
490 print_num(fp, 7, s->rx_fifo_errors);
491 print_num(fp, 7, s->rx_missed_errors);
492 }
493 fprintf(fp, "%s", _SL_);
494
495 /* TX stats */
496 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
497 s->tx_compressed ? "compressed" : "", _SL_);
498
499
500 fprintf(fp, " ");
501 print_num(fp, 10, s->tx_bytes);
502 print_num(fp, 8, s->tx_packets);
503 print_num(fp, 7, s->tx_errors);
504 print_num(fp, 7, s->tx_dropped);
505 print_num(fp, 7, s->tx_carrier_errors);
506 print_num(fp, 7, s->collisions);
507 if (s->tx_compressed)
508 print_num(fp, 7, s->tx_compressed);
509
510 /* TX error stats */
511 if (show_stats > 1) {
512 fprintf(fp, "%s", _SL_);
513 fprintf(fp, " TX errors: aborted fifo window heartbeat");
514 if (carrier_changes)
515 fprintf(fp, " transns");
516 fprintf(fp, "%s", _SL_);
517
518 fprintf(fp, " ");
519 print_num(fp, 8, s->tx_aborted_errors);
520 print_num(fp, 7, s->tx_fifo_errors);
521 print_num(fp, 7, s->tx_window_errors);
522 print_num(fp, 7, s->tx_heartbeat_errors);
523 if (carrier_changes)
524 print_num(fp, 7, *(uint32_t*)RTA_DATA(carrier_changes));
525 }
526 }
527
print_link_stats32(FILE * fp,const struct rtnl_link_stats * s,const struct rtattr * carrier_changes)528 static void print_link_stats32(FILE *fp, const struct rtnl_link_stats *s,
529 const struct rtattr *carrier_changes)
530 {
531 /* RX stats */
532 fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
533 s->rx_compressed ? "compressed" : "", _SL_);
534
535
536 fprintf(fp, " ");
537 print_num(fp, 10, s->rx_bytes);
538 print_num(fp, 8, s->rx_packets);
539 print_num(fp, 7, s->rx_errors);
540 print_num(fp, 7, s->rx_dropped);
541 print_num(fp, 7, s->rx_over_errors);
542 print_num(fp, 7, s->multicast);
543 if (s->rx_compressed)
544 print_num(fp, 7, s->rx_compressed);
545
546 /* RX error stats */
547 if (show_stats > 1) {
548 fprintf(fp, "%s", _SL_);
549 fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
550 fprintf(fp, " ");
551 print_num(fp, 8, s->rx_length_errors);
552 print_num(fp, 7, s->rx_crc_errors);
553 print_num(fp, 7, s->rx_frame_errors);
554 print_num(fp, 7, s->rx_fifo_errors);
555 print_num(fp, 7, s->rx_missed_errors);
556 }
557 fprintf(fp, "%s", _SL_);
558
559 /* TX stats */
560 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
561 s->tx_compressed ? "compressed" : "", _SL_);
562
563 fprintf(fp, " ");
564 print_num(fp, 10, s->tx_bytes);
565 print_num(fp, 8, s->tx_packets);
566 print_num(fp, 7, s->tx_errors);
567 print_num(fp, 7, s->tx_dropped);
568 print_num(fp, 7, s->tx_carrier_errors);
569 print_num(fp, 7, s->collisions);
570 if (s->tx_compressed)
571 print_num(fp, 7, s->tx_compressed);
572
573 /* TX error stats */
574 if (show_stats > 1) {
575 fprintf(fp, "%s", _SL_);
576 fprintf(fp, " TX errors: aborted fifo window heartbeat");
577 if (carrier_changes)
578 fprintf(fp, " transns");
579 fprintf(fp, "%s", _SL_);
580
581 fprintf(fp, " ");
582 print_num(fp, 8, s->tx_aborted_errors);
583 print_num(fp, 7, s->tx_fifo_errors);
584 print_num(fp, 7, s->tx_window_errors);
585 print_num(fp, 7, s->tx_heartbeat_errors);
586 if (carrier_changes)
587 print_num(fp, 7, *(uint32_t*)RTA_DATA(carrier_changes));
588 }
589 }
590
__print_link_stats(FILE * fp,struct rtattr ** tb)591 static void __print_link_stats(FILE *fp, struct rtattr **tb)
592 {
593 if (tb[IFLA_STATS64])
594 print_link_stats64(fp, RTA_DATA(tb[IFLA_STATS64]),
595 tb[IFLA_CARRIER_CHANGES]);
596 else if (tb[IFLA_STATS])
597 print_link_stats32(fp, RTA_DATA(tb[IFLA_STATS]),
598 tb[IFLA_CARRIER_CHANGES]);
599 }
600
print_link_stats(FILE * fp,struct nlmsghdr * n)601 static void print_link_stats(FILE *fp, struct nlmsghdr *n)
602 {
603 struct ifinfomsg *ifi = NLMSG_DATA(n);
604 struct rtattr * tb[IFLA_MAX+1];
605
606 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi),
607 n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi)));
608 __print_link_stats(fp, tb);
609 fprintf(fp, "%s", _SL_);
610 }
611
print_linkinfo_brief(const struct sockaddr_nl * who,struct nlmsghdr * n,void * arg)612 int print_linkinfo_brief(const struct sockaddr_nl *who,
613 struct nlmsghdr *n, void *arg)
614 {
615 FILE *fp = (FILE*)arg;
616 struct ifinfomsg *ifi = NLMSG_DATA(n);
617 struct rtattr * tb[IFLA_MAX+1];
618 int len = n->nlmsg_len;
619 char *name;
620 char buf[32] = { 0, };
621 unsigned m_flag = 0;
622
623 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
624 return -1;
625
626 len -= NLMSG_LENGTH(sizeof(*ifi));
627 if (len < 0)
628 return -1;
629
630 if (filter.ifindex && ifi->ifi_index != filter.ifindex)
631 return -1;
632 if (filter.up && !(ifi->ifi_flags&IFF_UP))
633 return -1;
634
635 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
636 if (tb[IFLA_IFNAME] == NULL) {
637 fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
638 }
639 if (filter.label &&
640 (!filter.family || filter.family == AF_PACKET) &&
641 fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
642 return -1;
643
644 if (tb[IFLA_GROUP]) {
645 int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
646 if (filter.group != -1 && group != filter.group)
647 return -1;
648 }
649
650 if (tb[IFLA_MASTER]) {
651 int master = *(int*)RTA_DATA(tb[IFLA_MASTER]);
652 if (filter.master > 0 && master != filter.master)
653 return -1;
654 }
655 else if (filter.master > 0)
656 return -1;
657
658 if (filter.kind) {
659 if (tb[IFLA_LINKINFO]) {
660 char *kind = parse_link_kind(tb[IFLA_LINKINFO]);
661
662 if (strcmp(kind, filter.kind))
663 return -1;
664 } else {
665 return -1;
666 }
667 }
668
669 if (n->nlmsg_type == RTM_DELLINK)
670 fprintf(fp, "Deleted ");
671
672 name = (char *)(tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
673
674 if (tb[IFLA_LINK]) {
675 SPRINT_BUF(b1);
676 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
677 if (iflink == 0)
678 snprintf(buf, sizeof(buf), "%s@NONE", name);
679 else {
680 snprintf(buf, sizeof(buf),
681 "%s@%s", name, ll_idx_n2a(iflink, b1));
682 m_flag = ll_index_to_flags(iflink);
683 m_flag = !(m_flag & IFF_UP);
684 }
685 } else
686 snprintf(buf, sizeof(buf), "%s", name);
687
688 fprintf(fp, "%-16s ", buf);
689
690 if (tb[IFLA_OPERSTATE])
691 print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
692
693 if (filter.family == AF_PACKET) {
694 SPRINT_BUF(b1);
695 if (tb[IFLA_ADDRESS]) {
696 color_fprintf(fp, COLOR_MAC, "%s ",
697 ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
698 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
699 ifi->ifi_type,
700 b1, sizeof(b1)));
701 }
702 }
703
704 if (filter.family == AF_PACKET)
705 print_link_flags(fp, ifi->ifi_flags, m_flag);
706
707 if (filter.family == AF_PACKET)
708 fprintf(fp, "\n");
709 fflush(fp);
710 return 0;
711 }
712
print_linkinfo(const struct sockaddr_nl * who,struct nlmsghdr * n,void * arg)713 int print_linkinfo(const struct sockaddr_nl *who,
714 struct nlmsghdr *n, void *arg)
715 {
716 FILE *fp = (FILE*)arg;
717 struct ifinfomsg *ifi = NLMSG_DATA(n);
718 struct rtattr * tb[IFLA_MAX+1];
719 int len = n->nlmsg_len;
720 unsigned m_flag = 0;
721
722 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
723 return 0;
724
725 len -= NLMSG_LENGTH(sizeof(*ifi));
726 if (len < 0)
727 return -1;
728
729 if (filter.ifindex && ifi->ifi_index != filter.ifindex)
730 return 0;
731 if (filter.up && !(ifi->ifi_flags&IFF_UP))
732 return 0;
733
734 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
735 if (tb[IFLA_IFNAME] == NULL) {
736 fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
737 }
738 if (filter.label &&
739 (!filter.family || filter.family == AF_PACKET) &&
740 fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
741 return 0;
742
743 if (tb[IFLA_GROUP]) {
744 int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
745 if (filter.group != -1 && group != filter.group)
746 return -1;
747 }
748
749 if (tb[IFLA_MASTER]) {
750 int master = *(int*)RTA_DATA(tb[IFLA_MASTER]);
751 if (filter.master > 0 && master != filter.master)
752 return -1;
753 }
754 else if (filter.master > 0)
755 return -1;
756
757 if (filter.kind) {
758 if (tb[IFLA_LINKINFO]) {
759 char *kind = parse_link_kind(tb[IFLA_LINKINFO]);
760
761 if (strcmp(kind, filter.kind))
762 return -1;
763 } else {
764 return -1;
765 }
766 }
767
768 if (n->nlmsg_type == RTM_DELLINK)
769 fprintf(fp, "Deleted ");
770
771 fprintf(fp, "%d: ", ifi->ifi_index);
772 color_fprintf(fp, COLOR_IFNAME, "%s",
773 tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
774
775 if (tb[IFLA_LINK]) {
776 SPRINT_BUF(b1);
777 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
778 if (iflink == 0)
779 fprintf(fp, "@NONE: ");
780 else {
781 if (tb[IFLA_LINK_NETNSID])
782 fprintf(fp, "@if%d: ", iflink);
783 else {
784 fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
785 m_flag = ll_index_to_flags(iflink);
786 m_flag = !(m_flag & IFF_UP);
787 }
788 }
789 } else {
790 fprintf(fp, ": ");
791 }
792 print_link_flags(fp, ifi->ifi_flags, m_flag);
793
794 if (tb[IFLA_MTU])
795 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
796 if (tb[IFLA_QDISC])
797 fprintf(fp, "qdisc %s ", rta_getattr_str(tb[IFLA_QDISC]));
798 if (tb[IFLA_MASTER]) {
799 SPRINT_BUF(b1);
800 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
801 }
802
803 if (tb[IFLA_PHYS_PORT_ID]) {
804 SPRINT_BUF(b1);
805 fprintf(fp, "portid %s ",
806 hexstring_n2a(RTA_DATA(tb[IFLA_PHYS_PORT_ID]),
807 RTA_PAYLOAD(tb[IFLA_PHYS_PORT_ID]),
808 b1, sizeof(b1)));
809 }
810
811 if (tb[IFLA_PHYS_SWITCH_ID]) {
812 SPRINT_BUF(b1);
813 fprintf(fp, "switchid %s ",
814 hexstring_n2a(RTA_DATA(tb[IFLA_PHYS_SWITCH_ID]),
815 RTA_PAYLOAD(tb[IFLA_PHYS_SWITCH_ID]),
816 b1, sizeof(b1)));
817 }
818
819 if (tb[IFLA_OPERSTATE])
820 print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
821
822 if (do_link && tb[IFLA_LINKMODE])
823 print_linkmode(fp, tb[IFLA_LINKMODE]);
824
825 if (tb[IFLA_GROUP]) {
826 SPRINT_BUF(b1);
827 int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
828 fprintf(fp, "group %s ", rtnl_group_n2a(group, b1, sizeof(b1)));
829 }
830
831 if (filter.showqueue)
832 print_queuelen(fp, tb);
833
834 if (!filter.family || filter.family == AF_PACKET || show_details) {
835 SPRINT_BUF(b1);
836 fprintf(fp, "%s", _SL_);
837 fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
838
839 if (tb[IFLA_ADDRESS]) {
840 color_fprintf(fp, COLOR_MAC, "%s",
841 ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
842 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
843 ifi->ifi_type,
844 b1, sizeof(b1)));
845 }
846 if (tb[IFLA_BROADCAST]) {
847 if (ifi->ifi_flags&IFF_POINTOPOINT)
848 fprintf(fp, " peer ");
849 else
850 fprintf(fp, " brd ");
851 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
852 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
853 ifi->ifi_type,
854 b1, sizeof(b1)));
855 }
856 }
857
858 if (tb[IFLA_LINK_NETNSID]) {
859 int id = *(int*)RTA_DATA(tb[IFLA_LINK_NETNSID]);
860
861 if (id >= 0)
862 fprintf(fp, " link-netnsid %d", id);
863 else
864 fprintf(fp, " link-netnsid unknown");
865 }
866
867 if (tb[IFLA_PROTO_DOWN]) {
868 if (rta_getattr_u8(tb[IFLA_PROTO_DOWN]))
869 fprintf(fp, " protodown on ");
870 }
871
872 if (tb[IFLA_PROMISCUITY] && show_details)
873 fprintf(fp, " promiscuity %u ",
874 *(int*)RTA_DATA(tb[IFLA_PROMISCUITY]));
875
876 if (tb[IFLA_LINKINFO] && show_details)
877 print_linktype(fp, tb[IFLA_LINKINFO]);
878
879 if (do_link && tb[IFLA_AF_SPEC] && show_details)
880 print_af_spec(fp, tb[IFLA_AF_SPEC]);
881
882 if ((do_link || show_details) && tb[IFLA_IFALIAS]) {
883 fprintf(fp, "%s alias %s", _SL_,
884 rta_getattr_str(tb[IFLA_IFALIAS]));
885 }
886
887 if (do_link && show_stats) {
888 fprintf(fp, "%s", _SL_);
889 __print_link_stats(fp, tb);
890 }
891
892 if ((do_link || show_details) && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
893 struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
894 int rem = RTA_PAYLOAD(vflist);
895 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
896 print_vfinfo(fp, i);
897 }
898
899 fprintf(fp, "\n");
900 fflush(fp);
901 return 1;
902 }
903
flush_update(void)904 static int flush_update(void)
905 {
906
907 /*
908 * Note that the kernel may delete multiple addresses for one
909 * delete request (e.g. if ipv4 address promotion is disabled).
910 * Since a flush operation is really a series of delete requests
911 * its possible that we may request an address delete that has
912 * already been done by the kernel. Therefore, ignore EADDRNOTAVAIL
913 * errors returned from a flush request
914 */
915 if ((rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) &&
916 (errno != EADDRNOTAVAIL)) {
917 perror("Failed to send flush request");
918 return -1;
919 }
920 filter.flushp = 0;
921 return 0;
922 }
923
set_lifetime(unsigned int * lifetime,char * argv)924 static int set_lifetime(unsigned int *lifetime, char *argv)
925 {
926 if (strcmp(argv, "forever") == 0)
927 *lifetime = INFINITY_LIFE_TIME;
928 else if (get_u32(lifetime, argv, 0))
929 return -1;
930
931 return 0;
932 }
933
get_ifa_flags(struct ifaddrmsg * ifa,struct rtattr * ifa_flags_attr)934 static unsigned int get_ifa_flags(struct ifaddrmsg *ifa,
935 struct rtattr *ifa_flags_attr)
936 {
937 return ifa_flags_attr ? rta_getattr_u32(ifa_flags_attr) :
938 ifa->ifa_flags;
939 }
940
print_addrinfo(const struct sockaddr_nl * who,struct nlmsghdr * n,void * arg)941 int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
942 void *arg)
943 {
944 FILE *fp = arg;
945 struct ifaddrmsg *ifa = NLMSG_DATA(n);
946 int len = n->nlmsg_len;
947 int deprecated = 0;
948 /* Use local copy of ifa_flags to not interfere with filtering code */
949 unsigned int ifa_flags;
950 struct rtattr * rta_tb[IFA_MAX+1];
951 char abuf[256];
952 SPRINT_BUF(b1);
953
954 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
955 return 0;
956 len -= NLMSG_LENGTH(sizeof(*ifa));
957 if (len < 0) {
958 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
959 return -1;
960 }
961
962 if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
963 return 0;
964
965 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa),
966 n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
967
968 ifa_flags = get_ifa_flags(ifa, rta_tb[IFA_FLAGS]);
969
970 if (!rta_tb[IFA_LOCAL])
971 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
972 if (!rta_tb[IFA_ADDRESS])
973 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
974
975 if (filter.ifindex && filter.ifindex != ifa->ifa_index)
976 return 0;
977 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
978 return 0;
979 if ((filter.flags ^ ifa_flags) & filter.flagmask)
980 return 0;
981 if (filter.label) {
982 SPRINT_BUF(b1);
983 const char *label;
984 if (rta_tb[IFA_LABEL])
985 label = RTA_DATA(rta_tb[IFA_LABEL]);
986 else
987 label = ll_idx_n2a(ifa->ifa_index, b1);
988 if (fnmatch(filter.label, label, 0) != 0)
989 return 0;
990 }
991 if (filter.pfx.family) {
992 if (rta_tb[IFA_LOCAL]) {
993 inet_prefix dst;
994 memset(&dst, 0, sizeof(dst));
995 dst.family = ifa->ifa_family;
996 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
997 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
998 return 0;
999 }
1000 }
1001
1002 if (filter.family && filter.family != ifa->ifa_family)
1003 return 0;
1004
1005 if (filter.flushb) {
1006 struct nlmsghdr *fn;
1007 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
1008 if (flush_update())
1009 return -1;
1010 }
1011 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
1012 memcpy(fn, n, n->nlmsg_len);
1013 fn->nlmsg_type = RTM_DELADDR;
1014 fn->nlmsg_flags = NLM_F_REQUEST;
1015 fn->nlmsg_seq = ++rth.seq;
1016 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
1017 filter.flushed++;
1018 if (show_stats < 2)
1019 return 0;
1020 }
1021
1022 if (n->nlmsg_type == RTM_DELADDR)
1023 fprintf(fp, "Deleted ");
1024
1025 if (!brief) {
1026 if (filter.oneline || filter.flushb)
1027 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
1028 if (ifa->ifa_family == AF_INET)
1029 fprintf(fp, " inet ");
1030 else if (ifa->ifa_family == AF_INET6)
1031 fprintf(fp, " inet6 ");
1032 else if (ifa->ifa_family == AF_DECnet)
1033 fprintf(fp, " dnet ");
1034 else if (ifa->ifa_family == AF_IPX)
1035 fprintf(fp, " ipx ");
1036 else
1037 fprintf(fp, " family %d ", ifa->ifa_family);
1038 }
1039
1040 if (rta_tb[IFA_LOCAL]) {
1041 if (ifa->ifa_family == AF_INET)
1042 color_fprintf(fp, COLOR_INET, "%s", format_host(ifa->ifa_family,
1043 RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
1044 RTA_DATA(rta_tb[IFA_LOCAL]),
1045 abuf, sizeof(abuf)));
1046 else if (ifa->ifa_family == AF_INET6)
1047 color_fprintf(fp, COLOR_INET6, "%s", format_host(ifa->ifa_family,
1048 RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
1049 RTA_DATA(rta_tb[IFA_LOCAL]),
1050 abuf, sizeof(abuf)));
1051 else
1052 fprintf(fp, "%s", format_host(ifa->ifa_family,
1053 RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
1054 RTA_DATA(rta_tb[IFA_LOCAL]),
1055 abuf, sizeof(abuf)));
1056
1057 if (rta_tb[IFA_ADDRESS] == NULL ||
1058 memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]),
1059 ifa->ifa_family == AF_INET ? 4 : 16) == 0) {
1060 fprintf(fp, "/%d ", ifa->ifa_prefixlen);
1061 } else {
1062 fprintf(fp, " peer %s/%d ",
1063 format_host(ifa->ifa_family,
1064 RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
1065 RTA_DATA(rta_tb[IFA_ADDRESS]),
1066 abuf, sizeof(abuf)),
1067 ifa->ifa_prefixlen);
1068 }
1069 }
1070
1071 if (brief)
1072 goto brief_exit;
1073
1074 if (rta_tb[IFA_BROADCAST]) {
1075 fprintf(fp, "brd %s ",
1076 format_host(ifa->ifa_family,
1077 RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
1078 RTA_DATA(rta_tb[IFA_BROADCAST]),
1079 abuf, sizeof(abuf)));
1080 }
1081 if (rta_tb[IFA_ANYCAST]) {
1082 fprintf(fp, "any %s ",
1083 format_host(ifa->ifa_family,
1084 RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
1085 RTA_DATA(rta_tb[IFA_ANYCAST]),
1086 abuf, sizeof(abuf)));
1087 }
1088 fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
1089 if (ifa_flags & IFA_F_SECONDARY) {
1090 ifa_flags &= ~IFA_F_SECONDARY;
1091 if (ifa->ifa_family == AF_INET6)
1092 fprintf(fp, "temporary ");
1093 else
1094 fprintf(fp, "secondary ");
1095 }
1096 if (ifa_flags & IFA_F_TENTATIVE) {
1097 ifa_flags &= ~IFA_F_TENTATIVE;
1098 fprintf(fp, "tentative ");
1099 }
1100 if (ifa_flags & IFA_F_DEPRECATED) {
1101 ifa_flags &= ~IFA_F_DEPRECATED;
1102 deprecated = 1;
1103 fprintf(fp, "deprecated ");
1104 }
1105 if (ifa_flags & IFA_F_HOMEADDRESS) {
1106 ifa_flags &= ~IFA_F_HOMEADDRESS;
1107 fprintf(fp, "home ");
1108 }
1109 if (ifa_flags & IFA_F_NODAD) {
1110 ifa_flags &= ~IFA_F_NODAD;
1111 fprintf(fp, "nodad ");
1112 }
1113 if (ifa_flags & IFA_F_MANAGETEMPADDR) {
1114 ifa_flags &= ~IFA_F_MANAGETEMPADDR;
1115 fprintf(fp, "mngtmpaddr ");
1116 }
1117 if (ifa_flags & IFA_F_NOPREFIXROUTE) {
1118 ifa_flags &= ~IFA_F_NOPREFIXROUTE;
1119 fprintf(fp, "noprefixroute ");
1120 }
1121 if (ifa_flags & IFA_F_MCAUTOJOIN) {
1122 ifa_flags &= ~IFA_F_MCAUTOJOIN;
1123 fprintf(fp, "autojoin ");
1124 }
1125 if (!(ifa_flags & IFA_F_PERMANENT)) {
1126 fprintf(fp, "dynamic ");
1127 } else
1128 ifa_flags &= ~IFA_F_PERMANENT;
1129 if (ifa_flags & IFA_F_DADFAILED) {
1130 ifa_flags &= ~IFA_F_DADFAILED;
1131 fprintf(fp, "dadfailed ");
1132 }
1133 if (ifa_flags)
1134 fprintf(fp, "flags %02x ", ifa_flags);
1135 if (rta_tb[IFA_LABEL])
1136 fprintf(fp, "%s", rta_getattr_str(rta_tb[IFA_LABEL]));
1137 if (rta_tb[IFA_CACHEINFO]) {
1138 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
1139 fprintf(fp, "%s", _SL_);
1140 fprintf(fp, " valid_lft ");
1141 if (ci->ifa_valid == INFINITY_LIFE_TIME)
1142 fprintf(fp, "forever");
1143 else
1144 fprintf(fp, "%usec", ci->ifa_valid);
1145 fprintf(fp, " preferred_lft ");
1146 if (ci->ifa_prefered == INFINITY_LIFE_TIME)
1147 fprintf(fp, "forever");
1148 else {
1149 if (deprecated)
1150 fprintf(fp, "%dsec", ci->ifa_prefered);
1151 else
1152 fprintf(fp, "%usec", ci->ifa_prefered);
1153 }
1154 }
1155 fprintf(fp, "\n");
1156 brief_exit:
1157 fflush(fp);
1158 return 0;
1159 }
1160
1161 struct nlmsg_list
1162 {
1163 struct nlmsg_list *next;
1164 struct nlmsghdr h;
1165 };
1166
1167 struct nlmsg_chain
1168 {
1169 struct nlmsg_list *head;
1170 struct nlmsg_list *tail;
1171 };
1172
print_selected_addrinfo(struct ifinfomsg * ifi,struct nlmsg_list * ainfo,FILE * fp)1173 static int print_selected_addrinfo(struct ifinfomsg *ifi,
1174 struct nlmsg_list *ainfo, FILE *fp)
1175 {
1176 for ( ;ainfo ; ainfo = ainfo->next) {
1177 struct nlmsghdr *n = &ainfo->h;
1178 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1179
1180 if (n->nlmsg_type != RTM_NEWADDR)
1181 continue;
1182
1183 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
1184 return -1;
1185
1186 if (ifa->ifa_index != ifi->ifi_index ||
1187 (filter.family && filter.family != ifa->ifa_family))
1188 continue;
1189
1190 if (filter.up && !(ifi->ifi_flags&IFF_UP))
1191 continue;
1192
1193 print_addrinfo(NULL, n, fp);
1194 }
1195 if (brief) {
1196 fprintf(fp, "\n");
1197 fflush(fp);
1198 }
1199 return 0;
1200 }
1201
1202
store_nlmsg(const struct sockaddr_nl * who,struct nlmsghdr * n,void * arg)1203 static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
1204 void *arg)
1205 {
1206 struct nlmsg_chain *lchain = (struct nlmsg_chain *)arg;
1207 struct nlmsg_list *h;
1208
1209 h = malloc(n->nlmsg_len+sizeof(void*));
1210 if (h == NULL)
1211 return -1;
1212
1213 memcpy(&h->h, n, n->nlmsg_len);
1214 h->next = NULL;
1215
1216 if (lchain->tail)
1217 lchain->tail->next = h;
1218 else
1219 lchain->head = h;
1220 lchain->tail = h;
1221
1222 ll_remember_index(who, n, NULL);
1223 return 0;
1224 }
1225
1226 static __u32 ipadd_dump_magic = 0x47361222;
1227
ipadd_save_prep(void)1228 static int ipadd_save_prep(void)
1229 {
1230 int ret;
1231
1232 if (isatty(STDOUT_FILENO)) {
1233 fprintf(stderr, "Not sending a binary stream to stdout\n");
1234 return -1;
1235 }
1236
1237 ret = write(STDOUT_FILENO, &ipadd_dump_magic, sizeof(ipadd_dump_magic));
1238 if (ret != sizeof(ipadd_dump_magic)) {
1239 fprintf(stderr, "Can't write magic to dump file\n");
1240 return -1;
1241 }
1242
1243 return 0;
1244 }
1245
ipadd_dump_check_magic(void)1246 static int ipadd_dump_check_magic(void)
1247 {
1248 int ret;
1249 __u32 magic = 0;
1250
1251 if (isatty(STDIN_FILENO)) {
1252 fprintf(stderr, "Can't restore address dump from a terminal\n");
1253 return -1;
1254 }
1255
1256 ret = fread(&magic, sizeof(magic), 1, stdin);
1257 if (magic != ipadd_dump_magic) {
1258 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
1259 return -1;
1260 }
1261
1262 return 0;
1263 }
1264
save_nlmsg(const struct sockaddr_nl * who,struct nlmsghdr * n,void * arg)1265 static int save_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
1266 void *arg)
1267 {
1268 int ret;
1269
1270 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1271 if ((ret > 0) && (ret != n->nlmsg_len)) {
1272 fprintf(stderr, "Short write while saving nlmsg\n");
1273 ret = -EIO;
1274 }
1275
1276 return ret == n->nlmsg_len ? 0 : ret;
1277 }
1278
show_handler(const struct sockaddr_nl * nl,struct rtnl_ctrl_data * ctrl,struct nlmsghdr * n,void * arg)1279 static int show_handler(const struct sockaddr_nl *nl,
1280 struct rtnl_ctrl_data *ctrl,
1281 struct nlmsghdr *n, void *arg)
1282 {
1283 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1284
1285 printf("if%d:\n", ifa->ifa_index);
1286 print_addrinfo(NULL, n, stdout);
1287 return 0;
1288 }
1289
ipaddr_showdump(void)1290 static int ipaddr_showdump(void)
1291 {
1292 if (ipadd_dump_check_magic())
1293 exit(-1);
1294
1295 exit(rtnl_from_file(stdin, &show_handler, NULL));
1296 }
1297
restore_handler(const struct sockaddr_nl * nl,struct rtnl_ctrl_data * ctrl,struct nlmsghdr * n,void * arg)1298 static int restore_handler(const struct sockaddr_nl *nl,
1299 struct rtnl_ctrl_data *ctrl,
1300 struct nlmsghdr *n, void *arg)
1301 {
1302 int ret;
1303
1304 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
1305
1306 ll_init_map(&rth);
1307
1308 ret = rtnl_talk(&rth, n, n, sizeof(*n));
1309 if ((ret < 0) && (errno == EEXIST))
1310 ret = 0;
1311
1312 return ret;
1313 }
1314
ipaddr_restore(void)1315 static int ipaddr_restore(void)
1316 {
1317 if (ipadd_dump_check_magic())
1318 exit(-1);
1319
1320 exit(rtnl_from_file(stdin, &restore_handler, NULL));
1321 }
1322
free_nlmsg_chain(struct nlmsg_chain * info)1323 static void free_nlmsg_chain(struct nlmsg_chain *info)
1324 {
1325 struct nlmsg_list *l, *n;
1326
1327 for (l = info->head; l; l = n) {
1328 n = l->next;
1329 free(l);
1330 }
1331 }
1332
ipaddr_filter(struct nlmsg_chain * linfo,struct nlmsg_chain * ainfo)1333 static void ipaddr_filter(struct nlmsg_chain *linfo, struct nlmsg_chain *ainfo)
1334 {
1335 struct nlmsg_list *l, **lp;
1336
1337 lp = &linfo->head;
1338 while ( (l = *lp) != NULL) {
1339 int ok = 0;
1340 int missing_net_address = 1;
1341 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
1342 struct nlmsg_list *a;
1343
1344 for (a = ainfo->head; a; a = a->next) {
1345 struct nlmsghdr *n = &a->h;
1346 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1347 struct rtattr *tb[IFA_MAX + 1];
1348 unsigned int ifa_flags;
1349
1350 if (ifa->ifa_index != ifi->ifi_index)
1351 continue;
1352 missing_net_address = 0;
1353 if (filter.family && filter.family != ifa->ifa_family)
1354 continue;
1355 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
1356 continue;
1357
1358 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
1359 ifa_flags = get_ifa_flags(ifa, tb[IFA_FLAGS]);
1360
1361 if ((filter.flags ^ ifa_flags) & filter.flagmask)
1362 continue;
1363 if (filter.pfx.family || filter.label) {
1364 if (!tb[IFA_LOCAL])
1365 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
1366
1367 if (filter.pfx.family && tb[IFA_LOCAL]) {
1368 inet_prefix dst;
1369 memset(&dst, 0, sizeof(dst));
1370 dst.family = ifa->ifa_family;
1371 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
1372 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
1373 continue;
1374 }
1375 if (filter.label) {
1376 SPRINT_BUF(b1);
1377 const char *label;
1378 if (tb[IFA_LABEL])
1379 label = RTA_DATA(tb[IFA_LABEL]);
1380 else
1381 label = ll_idx_n2a(ifa->ifa_index, b1);
1382 if (fnmatch(filter.label, label, 0) != 0)
1383 continue;
1384 }
1385 }
1386
1387 ok = 1;
1388 break;
1389 }
1390 if (missing_net_address &&
1391 (filter.family == AF_UNSPEC || filter.family == AF_PACKET))
1392 ok = 1;
1393 if (!ok) {
1394 *lp = l->next;
1395 free(l);
1396 } else
1397 lp = &l->next;
1398 }
1399 }
1400
ipaddr_flush(void)1401 static int ipaddr_flush(void)
1402 {
1403 int round = 0;
1404 char flushb[4096-512];
1405
1406 filter.flushb = flushb;
1407 filter.flushp = 0;
1408 filter.flushe = sizeof(flushb);
1409
1410 while ((max_flush_loops == 0) || (round < max_flush_loops)) {
1411 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
1412 perror("Cannot send dump request");
1413 exit(1);
1414 }
1415 filter.flushed = 0;
1416 if (rtnl_dump_filter_nc(&rth, print_addrinfo,
1417 stdout, NLM_F_DUMP_INTR) < 0) {
1418 fprintf(stderr, "Flush terminated\n");
1419 exit(1);
1420 }
1421 if (filter.flushed == 0) {
1422 flush_done:
1423 if (show_stats) {
1424 if (round == 0)
1425 printf("Nothing to flush.\n");
1426 else
1427 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
1428 }
1429 fflush(stdout);
1430 return 0;
1431 }
1432 round++;
1433 if (flush_update() < 0)
1434 return 1;
1435
1436 if (show_stats) {
1437 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
1438 fflush(stdout);
1439 }
1440
1441 /* If we are flushing, and specifying primary, then we
1442 * want to flush only a single round. Otherwise, we'll
1443 * start flushing secondaries that were promoted to
1444 * primaries.
1445 */
1446 if (!(filter.flags & IFA_F_SECONDARY) && (filter.flagmask & IFA_F_SECONDARY))
1447 goto flush_done;
1448 }
1449 fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", max_flush_loops);
1450 fflush(stderr);
1451 return 1;
1452 }
1453
ipaddr_list_flush_or_save(int argc,char ** argv,int action)1454 static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
1455 {
1456 struct nlmsg_chain linfo = { NULL, NULL};
1457 struct nlmsg_chain ainfo = { NULL, NULL};
1458 struct nlmsg_list *l;
1459 char *filter_dev = NULL;
1460 int no_link = 0;
1461
1462 ipaddr_reset_filter(oneline, 0);
1463 filter.showqueue = 1;
1464 filter.family = preferred_family;
1465 filter.group = -1;
1466
1467 if (action == IPADD_FLUSH) {
1468 if (argc <= 0) {
1469 fprintf(stderr, "Flush requires arguments.\n");
1470
1471 return -1;
1472 }
1473 if (filter.family == AF_PACKET) {
1474 fprintf(stderr, "Cannot flush link addresses.\n");
1475 return -1;
1476 }
1477 }
1478
1479 while (argc > 0) {
1480 if (strcmp(*argv, "to") == 0) {
1481 NEXT_ARG();
1482 get_prefix(&filter.pfx, *argv, filter.family);
1483 if (filter.family == AF_UNSPEC)
1484 filter.family = filter.pfx.family;
1485 } else if (strcmp(*argv, "scope") == 0) {
1486 unsigned scope = 0;
1487 NEXT_ARG();
1488 filter.scopemask = -1;
1489 if (rtnl_rtscope_a2n(&scope, *argv)) {
1490 if (strcmp(*argv, "all") != 0)
1491 invarg("invalid \"scope\"\n", *argv);
1492 scope = RT_SCOPE_NOWHERE;
1493 filter.scopemask = 0;
1494 }
1495 filter.scope = scope;
1496 } else if (strcmp(*argv, "up") == 0) {
1497 filter.up = 1;
1498 } else if (strcmp(*argv, "dynamic") == 0) {
1499 filter.flags &= ~IFA_F_PERMANENT;
1500 filter.flagmask |= IFA_F_PERMANENT;
1501 } else if (strcmp(*argv, "permanent") == 0) {
1502 filter.flags |= IFA_F_PERMANENT;
1503 filter.flagmask |= IFA_F_PERMANENT;
1504 } else if (strcmp(*argv, "secondary") == 0 ||
1505 strcmp(*argv, "temporary") == 0) {
1506 filter.flags |= IFA_F_SECONDARY;
1507 filter.flagmask |= IFA_F_SECONDARY;
1508 } else if (strcmp(*argv, "primary") == 0) {
1509 filter.flags &= ~IFA_F_SECONDARY;
1510 filter.flagmask |= IFA_F_SECONDARY;
1511 } else if (strcmp(*argv, "tentative") == 0) {
1512 filter.flags |= IFA_F_TENTATIVE;
1513 filter.flagmask |= IFA_F_TENTATIVE;
1514 } else if (strcmp(*argv, "-tentative") == 0) {
1515 filter.flags &= ~IFA_F_TENTATIVE;
1516 filter.flagmask |= IFA_F_TENTATIVE;
1517 } else if (strcmp(*argv, "deprecated") == 0) {
1518 filter.flags |= IFA_F_DEPRECATED;
1519 filter.flagmask |= IFA_F_DEPRECATED;
1520 } else if (strcmp(*argv, "-deprecated") == 0) {
1521 filter.flags &= ~IFA_F_DEPRECATED;
1522 filter.flagmask |= IFA_F_DEPRECATED;
1523 } else if (strcmp(*argv, "home") == 0) {
1524 filter.flags |= IFA_F_HOMEADDRESS;
1525 filter.flagmask |= IFA_F_HOMEADDRESS;
1526 } else if (strcmp(*argv, "nodad") == 0) {
1527 filter.flags |= IFA_F_NODAD;
1528 filter.flagmask |= IFA_F_NODAD;
1529 } else if (strcmp(*argv, "mngtmpaddr") == 0) {
1530 filter.flags |= IFA_F_MANAGETEMPADDR;
1531 filter.flagmask |= IFA_F_MANAGETEMPADDR;
1532 } else if (strcmp(*argv, "noprefixroute") == 0) {
1533 filter.flags |= IFA_F_NOPREFIXROUTE;
1534 filter.flagmask |= IFA_F_NOPREFIXROUTE;
1535 } else if (strcmp(*argv, "autojoin") == 0) {
1536 filter.flags |= IFA_F_MCAUTOJOIN;
1537 filter.flagmask |= IFA_F_MCAUTOJOIN;
1538 } else if (strcmp(*argv, "dadfailed") == 0) {
1539 filter.flags |= IFA_F_DADFAILED;
1540 filter.flagmask |= IFA_F_DADFAILED;
1541 } else if (strcmp(*argv, "-dadfailed") == 0) {
1542 filter.flags &= ~IFA_F_DADFAILED;
1543 filter.flagmask |= IFA_F_DADFAILED;
1544 } else if (strcmp(*argv, "label") == 0) {
1545 NEXT_ARG();
1546 filter.label = *argv;
1547 } else if (strcmp(*argv, "group") == 0) {
1548 NEXT_ARG();
1549 if (rtnl_group_a2n(&filter.group, *argv))
1550 invarg("Invalid \"group\" value\n", *argv);
1551 } else if (strcmp(*argv, "master") == 0) {
1552 int ifindex;
1553 NEXT_ARG();
1554 ifindex = ll_name_to_index(*argv);
1555 if (!ifindex)
1556 invarg("Device does not exist\n", *argv);
1557 filter.master = ifindex;
1558 } else if (do_link && strcmp(*argv, "type") == 0) {
1559 NEXT_ARG();
1560 filter.kind = *argv;
1561 } else {
1562 if (strcmp(*argv, "dev") == 0) {
1563 NEXT_ARG();
1564 }
1565 else if (matches(*argv, "help") == 0)
1566 usage();
1567 if (filter_dev)
1568 duparg2("dev", *argv);
1569 filter_dev = *argv;
1570 }
1571 argv++; argc--;
1572 }
1573
1574 if (filter_dev) {
1575 filter.ifindex = ll_name_to_index(filter_dev);
1576 if (filter.ifindex <= 0) {
1577 fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
1578 return -1;
1579 }
1580 }
1581
1582 if (action == IPADD_FLUSH)
1583 return ipaddr_flush();
1584
1585 if (action == IPADD_SAVE) {
1586 if (ipadd_save_prep())
1587 exit(1);
1588
1589 if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETADDR) < 0) {
1590 perror("Cannot send dump request");
1591 exit(1);
1592 }
1593
1594 if (rtnl_dump_filter(&rth, save_nlmsg, stdout) < 0) {
1595 fprintf(stderr, "Save terminated\n");
1596 exit(1);
1597 }
1598
1599 exit(0);
1600 }
1601
1602 /*
1603 * If only filter_dev present and none of the other
1604 * link filters are present, use RTM_GETLINK to get
1605 * the link device
1606 */
1607 if (filter_dev && filter.group == -1 && do_link == 1) {
1608 if (iplink_get(0, filter_dev, RTEXT_FILTER_VF) < 0) {
1609 perror("Cannot send link get request");
1610 exit(1);
1611 }
1612 exit(0);
1613 }
1614
1615 if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
1616 perror("Cannot send dump request");
1617 exit(1);
1618 }
1619
1620 if (rtnl_dump_filter(&rth, store_nlmsg, &linfo) < 0) {
1621 fprintf(stderr, "Dump terminated\n");
1622 exit(1);
1623 }
1624
1625 if (filter.family != AF_PACKET) {
1626 if (filter.oneline)
1627 no_link = 1;
1628
1629 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
1630 perror("Cannot send dump request");
1631 exit(1);
1632 }
1633
1634 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo) < 0) {
1635 fprintf(stderr, "Dump terminated\n");
1636 exit(1);
1637 }
1638
1639 ipaddr_filter(&linfo, &ainfo);
1640 }
1641
1642 for (l = linfo.head; l; l = l->next) {
1643 int res = 0;
1644 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
1645
1646 if (brief) {
1647 if (print_linkinfo_brief(NULL, &l->h, stdout) == 0)
1648 if (filter.family != AF_PACKET)
1649 print_selected_addrinfo(ifi,
1650 ainfo.head,
1651 stdout);
1652 } else if (no_link ||
1653 (res = print_linkinfo(NULL, &l->h, stdout)) >= 0) {
1654 if (filter.family != AF_PACKET)
1655 print_selected_addrinfo(ifi,
1656 ainfo.head, stdout);
1657 if (res > 0 && !do_link && show_stats)
1658 print_link_stats(stdout, &l->h);
1659 }
1660 }
1661 fflush(stdout);
1662
1663 free_nlmsg_chain(&ainfo);
1664 free_nlmsg_chain(&linfo);
1665
1666 return 0;
1667 }
1668
1669 static void
ipaddr_loop_each_vf(struct rtattr * tb[],int vfnum,int * min,int * max)1670 ipaddr_loop_each_vf(struct rtattr *tb[], int vfnum, int *min, int *max)
1671 {
1672 struct rtattr *vflist = tb[IFLA_VFINFO_LIST];
1673 struct rtattr *i, *vf[IFLA_VF_MAX+1];
1674 struct ifla_vf_rate *vf_rate;
1675 int rem;
1676
1677 rem = RTA_PAYLOAD(vflist);
1678
1679 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
1680 parse_rtattr_nested(vf, IFLA_VF_MAX, i);
1681 vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
1682 if (vf_rate->vf == vfnum) {
1683 *min = vf_rate->min_tx_rate;
1684 *max = vf_rate->max_tx_rate;
1685 return;
1686 }
1687 }
1688 fprintf(stderr, "Cannot find VF %d\n", vfnum);
1689 exit(1);
1690 }
1691
ipaddr_get_vf_rate(int vfnum,int * min,int * max,int idx)1692 void ipaddr_get_vf_rate(int vfnum, int *min, int *max, int idx)
1693 {
1694 struct nlmsg_chain linfo = { NULL, NULL};
1695 struct rtattr *tb[IFLA_MAX+1];
1696 struct ifinfomsg *ifi;
1697 struct nlmsg_list *l;
1698 struct nlmsghdr *n;
1699 int len;
1700
1701 if (rtnl_wilddump_request(&rth, AF_UNSPEC, RTM_GETLINK) < 0) {
1702 perror("Cannot send dump request");
1703 exit(1);
1704 }
1705 if (rtnl_dump_filter(&rth, store_nlmsg, &linfo) < 0) {
1706 fprintf(stderr, "Dump terminated\n");
1707 exit(1);
1708 }
1709 for (l = linfo.head; l; l = l->next) {
1710 n = &l->h;
1711 ifi = NLMSG_DATA(n);
1712
1713 len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi));
1714 if (len < 0 || (idx && idx != ifi->ifi_index))
1715 continue;
1716
1717 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
1718
1719 if ((tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF])) {
1720 ipaddr_loop_each_vf(tb, vfnum, min, max);
1721 return;
1722 }
1723 }
1724 }
1725
ipaddr_list_link(int argc,char ** argv)1726 int ipaddr_list_link(int argc, char **argv)
1727 {
1728 preferred_family = AF_PACKET;
1729 do_link = 1;
1730 return ipaddr_list_flush_or_save(argc, argv, IPADD_LIST);
1731 }
1732
ipaddr_reset_filter(int oneline,int ifindex)1733 void ipaddr_reset_filter(int oneline, int ifindex)
1734 {
1735 memset(&filter, 0, sizeof(filter));
1736 filter.oneline = oneline;
1737 filter.ifindex = ifindex;
1738 }
1739
default_scope(inet_prefix * lcl)1740 static int default_scope(inet_prefix *lcl)
1741 {
1742 if (lcl->family == AF_INET) {
1743 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
1744 return RT_SCOPE_HOST;
1745 }
1746 return 0;
1747 }
1748
ipaddr_is_multicast(inet_prefix * a)1749 static bool ipaddr_is_multicast(inet_prefix *a)
1750 {
1751 if (a->family == AF_INET)
1752 return IN_MULTICAST(ntohl(a->data[0]));
1753 else if (a->family == AF_INET6)
1754 return IN6_IS_ADDR_MULTICAST(a->data);
1755 else
1756 return false;
1757 }
1758
ipaddr_modify(int cmd,int flags,int argc,char ** argv)1759 static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
1760 {
1761 struct {
1762 struct nlmsghdr n;
1763 struct ifaddrmsg ifa;
1764 char buf[256];
1765 } req;
1766 char *d = NULL;
1767 char *l = NULL;
1768 char *lcl_arg = NULL;
1769 char *valid_lftp = NULL;
1770 char *preferred_lftp = NULL;
1771 inet_prefix lcl;
1772 inet_prefix peer;
1773 int local_len = 0;
1774 int peer_len = 0;
1775 int brd_len = 0;
1776 int any_len = 0;
1777 int scoped = 0;
1778 __u32 preferred_lft = INFINITY_LIFE_TIME;
1779 __u32 valid_lft = INFINITY_LIFE_TIME;
1780 struct ifa_cacheinfo cinfo;
1781 unsigned int ifa_flags = 0;
1782
1783 memset(&req, 0, sizeof(req));
1784
1785 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
1786 req.n.nlmsg_flags = NLM_F_REQUEST | flags;
1787 req.n.nlmsg_type = cmd;
1788 req.ifa.ifa_family = preferred_family;
1789
1790 while (argc > 0) {
1791 if (strcmp(*argv, "peer") == 0 ||
1792 strcmp(*argv, "remote") == 0) {
1793 NEXT_ARG();
1794
1795 if (peer_len)
1796 duparg("peer", *argv);
1797 get_prefix(&peer, *argv, req.ifa.ifa_family);
1798 peer_len = peer.bytelen;
1799 if (req.ifa.ifa_family == AF_UNSPEC)
1800 req.ifa.ifa_family = peer.family;
1801 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
1802 req.ifa.ifa_prefixlen = peer.bitlen;
1803 } else if (matches(*argv, "broadcast") == 0 ||
1804 strcmp(*argv, "brd") == 0) {
1805 inet_prefix addr;
1806 NEXT_ARG();
1807 if (brd_len)
1808 duparg("broadcast", *argv);
1809 if (strcmp(*argv, "+") == 0)
1810 brd_len = -1;
1811 else if (strcmp(*argv, "-") == 0)
1812 brd_len = -2;
1813 else {
1814 get_addr(&addr, *argv, req.ifa.ifa_family);
1815 if (req.ifa.ifa_family == AF_UNSPEC)
1816 req.ifa.ifa_family = addr.family;
1817 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
1818 brd_len = addr.bytelen;
1819 }
1820 } else if (strcmp(*argv, "anycast") == 0) {
1821 inet_prefix addr;
1822 NEXT_ARG();
1823 if (any_len)
1824 duparg("anycast", *argv);
1825 get_addr(&addr, *argv, req.ifa.ifa_family);
1826 if (req.ifa.ifa_family == AF_UNSPEC)
1827 req.ifa.ifa_family = addr.family;
1828 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
1829 any_len = addr.bytelen;
1830 } else if (strcmp(*argv, "scope") == 0) {
1831 unsigned scope = 0;
1832 NEXT_ARG();
1833 if (rtnl_rtscope_a2n(&scope, *argv))
1834 invarg("invalid scope value.", *argv);
1835 req.ifa.ifa_scope = scope;
1836 scoped = 1;
1837 } else if (strcmp(*argv, "dev") == 0) {
1838 NEXT_ARG();
1839 d = *argv;
1840 } else if (strcmp(*argv, "label") == 0) {
1841 NEXT_ARG();
1842 l = *argv;
1843 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
1844 } else if (matches(*argv, "valid_lft") == 0) {
1845 if (valid_lftp)
1846 duparg("valid_lft", *argv);
1847 NEXT_ARG();
1848 valid_lftp = *argv;
1849 if (set_lifetime(&valid_lft, *argv))
1850 invarg("valid_lft value", *argv);
1851 } else if (matches(*argv, "preferred_lft") == 0) {
1852 if (preferred_lftp)
1853 duparg("preferred_lft", *argv);
1854 NEXT_ARG();
1855 preferred_lftp = *argv;
1856 if (set_lifetime(&preferred_lft, *argv))
1857 invarg("preferred_lft value", *argv);
1858 } else if (strcmp(*argv, "home") == 0) {
1859 ifa_flags |= IFA_F_HOMEADDRESS;
1860 } else if (strcmp(*argv, "nodad") == 0) {
1861 ifa_flags |= IFA_F_NODAD;
1862 } else if (strcmp(*argv, "mngtmpaddr") == 0) {
1863 ifa_flags |= IFA_F_MANAGETEMPADDR;
1864 } else if (strcmp(*argv, "noprefixroute") == 0) {
1865 ifa_flags |= IFA_F_NOPREFIXROUTE;
1866 } else if (strcmp(*argv, "autojoin") == 0) {
1867 ifa_flags |= IFA_F_MCAUTOJOIN;
1868 } else {
1869 if (strcmp(*argv, "local") == 0) {
1870 NEXT_ARG();
1871 }
1872 if (matches(*argv, "help") == 0)
1873 usage();
1874 if (local_len)
1875 duparg2("local", *argv);
1876 lcl_arg = *argv;
1877 get_prefix(&lcl, *argv, req.ifa.ifa_family);
1878 if (req.ifa.ifa_family == AF_UNSPEC)
1879 req.ifa.ifa_family = lcl.family;
1880 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
1881 local_len = lcl.bytelen;
1882 }
1883 argc--; argv++;
1884 }
1885 if (ifa_flags <= 0xff)
1886 req.ifa.ifa_flags = ifa_flags;
1887 else
1888 addattr32(&req.n, sizeof(req), IFA_FLAGS, ifa_flags);
1889
1890 if (d == NULL) {
1891 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
1892 return -1;
1893 }
1894 if (l && matches(d, l) != 0) {
1895 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
1896 return -1;
1897 }
1898
1899 if (peer_len == 0 && local_len) {
1900 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
1901 fprintf(stderr,
1902 "Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
1903 " Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
1904 " This special behaviour is likely to disappear in further releases,\n" \
1905 " fix your scripts!\n", lcl_arg, local_len*8);
1906 } else {
1907 peer = lcl;
1908 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
1909 }
1910 }
1911 if (req.ifa.ifa_prefixlen == 0)
1912 req.ifa.ifa_prefixlen = lcl.bitlen;
1913
1914 if (brd_len < 0 && cmd != RTM_DELADDR) {
1915 inet_prefix brd;
1916 int i;
1917 if (req.ifa.ifa_family != AF_INET) {
1918 fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
1919 return -1;
1920 }
1921 brd = peer;
1922 if (brd.bitlen <= 30) {
1923 for (i = 31; i >= brd.bitlen; i--) {
1924 if (brd_len == -1)
1925 brd.data[0] |= htonl(1<<(31-i));
1926 else
1927 brd.data[0] &= ~htonl(1<<(31-i));
1928 }
1929 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
1930 brd_len = brd.bytelen;
1931 }
1932 }
1933 if (!scoped && cmd != RTM_DELADDR)
1934 req.ifa.ifa_scope = default_scope(&lcl);
1935
1936 if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
1937 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1938 return -1;
1939 }
1940
1941 if (valid_lftp || preferred_lftp) {
1942 if (!valid_lft) {
1943 fprintf(stderr, "valid_lft is zero\n");
1944 return -1;
1945 }
1946 if (valid_lft < preferred_lft) {
1947 fprintf(stderr, "preferred_lft is greater than valid_lft\n");
1948 return -1;
1949 }
1950
1951 memset(&cinfo, 0, sizeof(cinfo));
1952 cinfo.ifa_prefered = preferred_lft;
1953 cinfo.ifa_valid = valid_lft;
1954 addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
1955 sizeof(cinfo));
1956 }
1957
1958 if ((ifa_flags & IFA_F_MCAUTOJOIN) && !ipaddr_is_multicast(&lcl)) {
1959 fprintf(stderr, "autojoin needs multicast address\n");
1960 return -1;
1961 }
1962
1963 if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
1964 return -2;
1965
1966 return 0;
1967 }
1968
do_ipaddr(int argc,char ** argv)1969 int do_ipaddr(int argc, char **argv)
1970 {
1971 if (argc < 1)
1972 return ipaddr_list_flush_or_save(0, NULL, IPADD_LIST);
1973 if (matches(*argv, "add") == 0)
1974 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
1975 if (matches(*argv, "change") == 0 ||
1976 strcmp(*argv, "chg") == 0)
1977 return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
1978 if (matches(*argv, "replace") == 0)
1979 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
1980 if (matches(*argv, "delete") == 0)
1981 return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
1982 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1983 || matches(*argv, "lst") == 0)
1984 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_LIST);
1985 if (matches(*argv, "flush") == 0)
1986 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_FLUSH);
1987 if (matches(*argv, "save") == 0)
1988 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_SAVE);
1989 if (matches(*argv, "showdump") == 0)
1990 return ipaddr_showdump();
1991 if (matches(*argv, "restore") == 0)
1992 return ipaddr_restore();
1993 if (matches(*argv, "help") == 0)
1994 usage();
1995 fprintf(stderr, "Command \"%s\" is unknown, try \"ip address help\".\n", *argv);
1996 exit(-1);
1997 }
1998