1/* 2 * ipaddress.c "ip address". 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 * 9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> 10 * 11 * Changes: 12 * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated 13 */ 14 15#include <stdio.h> 16#include <stdlib.h> 17#include <unistd.h> 18#include <syslog.h> 19#include <fcntl.h> 20#include <sys/ioctl.h> 21#include <sys/socket.h> 22#include <sys/ioctl.h> 23#include <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 37static struct 38{ 39 int ifindex; 40 int family; 41 int oneline; 42 int showqueue; 43 inet_prefix pfx; 44 int scope, scopemask; 45 int flags, flagmask; 46 int up; 47 char *label; 48 int flushed; 49 char *flushb; 50 int flushp; 51 int flushe; 52} filter; 53 54static int do_link; 55 56static void usage(void) __attribute__((noreturn)); 57 58static void usage(void) 59{ 60 if (do_link) { 61 iplink_usage(); 62 } 63 fprintf(stderr, "Usage: ip addr {add|del} IFADDR dev STRING\n"); 64 fprintf(stderr, " ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n"); 65 fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n"); 66 fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n"); 67 fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n"); 68 fprintf(stderr, " [ label STRING ] [ scope SCOPE-ID ]\n"); 69 fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n"); 70 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n"); 71 fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n"); 72 fprintf(stderr, " tentative | deprecated ]\n"); 73 exit(-1); 74} 75 76void print_link_flags(FILE *fp, unsigned flags, unsigned mdown) 77{ 78 fprintf(fp, "<"); 79 if (flags & IFF_UP && !(flags & IFF_RUNNING)) 80 fprintf(fp, "NO-CARRIER%s", flags ? "," : ""); 81 flags &= ~IFF_RUNNING; 82#define _PF(f) if (flags&IFF_##f) { \ 83 flags &= ~IFF_##f ; \ 84 fprintf(fp, #f "%s", flags ? "," : ""); } 85 _PF(LOOPBACK); 86 _PF(BROADCAST); 87 _PF(POINTOPOINT); 88 _PF(MULTICAST); 89 _PF(NOARP); 90 _PF(ALLMULTI); 91 _PF(PROMISC); 92 _PF(MASTER); 93 _PF(SLAVE); 94 _PF(DEBUG); 95 _PF(DYNAMIC); 96 _PF(AUTOMEDIA); 97 _PF(PORTSEL); 98 _PF(NOTRAILERS); 99 _PF(UP); 100#undef _PF 101 if (flags) 102 fprintf(fp, "%x", flags); 103 if (mdown) 104 fprintf(fp, ",M-DOWN"); 105 fprintf(fp, "> "); 106} 107 108void print_queuelen(char *name) 109{ 110 struct ifreq ifr; 111 int s; 112 113 s = socket(AF_INET, SOCK_STREAM, 0); 114 if (s < 0) 115 return; 116 117 memset(&ifr, 0, sizeof(ifr)); 118 strcpy(ifr.ifr_name, name); 119 if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) { 120 perror("SIOCGIFXQLEN"); 121 close(s); 122 return; 123 } 124 close(s); 125 126 if (ifr.ifr_qlen) 127 printf("qlen %d", ifr.ifr_qlen); 128} 129 130int print_linkinfo(const struct sockaddr_nl *who, 131 struct nlmsghdr *n, void *arg) 132{ 133 FILE *fp = (FILE*)arg; 134 struct ifinfomsg *ifi = NLMSG_DATA(n); 135 struct rtattr * tb[IFLA_MAX+1]; 136 int len = n->nlmsg_len; 137 unsigned m_flag = 0; 138 139 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK) 140 return 0; 141 142 len -= NLMSG_LENGTH(sizeof(*ifi)); 143 if (len < 0) 144 return -1; 145 146 if (filter.ifindex && ifi->ifi_index != filter.ifindex) 147 return 0; 148 if (filter.up && !(ifi->ifi_flags&IFF_UP)) 149 return 0; 150 151 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); 152 if (tb[IFLA_IFNAME] == NULL) { 153 fprintf(stderr, "BUG: nil ifname\n"); 154 return -1; 155 } 156 if (filter.label && 157 (!filter.family || filter.family == AF_PACKET) && 158 fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0)) 159 return 0; 160 161 if (n->nlmsg_type == RTM_DELLINK) 162 fprintf(fp, "Deleted "); 163 164 fprintf(fp, "%d: %s", ifi->ifi_index, 165 tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>"); 166 167 if (tb[IFLA_LINK]) { 168 SPRINT_BUF(b1); 169 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]); 170 if (iflink == 0) 171 fprintf(fp, "@NONE: "); 172 else { 173 fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1)); 174 m_flag = ll_index_to_flags(iflink); 175 m_flag = !(m_flag & IFF_UP); 176 } 177 } else { 178 fprintf(fp, ": "); 179 } 180 print_link_flags(fp, ifi->ifi_flags, m_flag); 181 182 if (tb[IFLA_MTU]) 183 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU])); 184 if (tb[IFLA_QDISC]) 185 fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC])); 186#ifdef IFLA_MASTER 187 if (tb[IFLA_MASTER]) { 188 SPRINT_BUF(b1); 189 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1)); 190 } 191#endif 192 if (filter.showqueue) 193 print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME])); 194 195 if (!filter.family || filter.family == AF_PACKET) { 196 SPRINT_BUF(b1); 197 fprintf(fp, "%s", _SL_); 198 fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1))); 199 200 if (tb[IFLA_ADDRESS]) { 201 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]), 202 RTA_PAYLOAD(tb[IFLA_ADDRESS]), 203 ifi->ifi_type, 204 b1, sizeof(b1))); 205 } 206 if (tb[IFLA_BROADCAST]) { 207 if (ifi->ifi_flags&IFF_POINTOPOINT) 208 fprintf(fp, " peer "); 209 else 210 fprintf(fp, " brd "); 211 fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]), 212 RTA_PAYLOAD(tb[IFLA_BROADCAST]), 213 ifi->ifi_type, 214 b1, sizeof(b1))); 215 } 216 } 217 if (do_link && tb[IFLA_STATS] && show_stats) { 218 struct rtnl_link_stats slocal; 219 struct rtnl_link_stats *s = RTA_DATA(tb[IFLA_STATS]); 220 if (((unsigned long)s) & (sizeof(unsigned long)-1)) { 221 memcpy(&slocal, s, sizeof(slocal)); 222 s = &slocal; 223 } 224 fprintf(fp, "%s", _SL_); 225 fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s", 226 s->rx_compressed ? "compressed" : "", _SL_); 227 fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u", 228 s->rx_bytes, s->rx_packets, s->rx_errors, 229 s->rx_dropped, s->rx_over_errors, 230 s->multicast 231 ); 232 if (s->rx_compressed) 233 fprintf(fp, " %-7u", s->rx_compressed); 234 if (show_stats > 1) { 235 fprintf(fp, "%s", _SL_); 236 fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_); 237 fprintf(fp, " %-7u %-7u %-7u %-7u %-7u", 238 s->rx_length_errors, 239 s->rx_crc_errors, 240 s->rx_frame_errors, 241 s->rx_fifo_errors, 242 s->rx_missed_errors 243 ); 244 } 245 fprintf(fp, "%s", _SL_); 246 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s", 247 s->tx_compressed ? "compressed" : "", _SL_); 248 fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u", 249 s->tx_bytes, s->tx_packets, s->tx_errors, 250 s->tx_dropped, s->tx_carrier_errors, s->collisions); 251 if (s->tx_compressed) 252 fprintf(fp, " %-7u", s->tx_compressed); 253 if (show_stats > 1) { 254 fprintf(fp, "%s", _SL_); 255 fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_); 256 fprintf(fp, " %-7u %-7u %-7u %-7u", 257 s->tx_aborted_errors, 258 s->tx_fifo_errors, 259 s->tx_window_errors, 260 s->tx_heartbeat_errors 261 ); 262 } 263 } 264 fprintf(fp, "\n"); 265 fflush(fp); 266 return 0; 267} 268 269static int flush_update(void) 270{ 271 if (rtnl_send(&rth, filter.flushb, filter.flushp) < 0) { 272 perror("Failed to send flush request\n"); 273 return -1; 274 } 275 filter.flushp = 0; 276 return 0; 277} 278 279int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n, 280 void *arg) 281{ 282 FILE *fp = (FILE*)arg; 283 struct ifaddrmsg *ifa = NLMSG_DATA(n); 284 int len = n->nlmsg_len; 285 struct rtattr * rta_tb[IFA_MAX+1]; 286 char abuf[256]; 287 SPRINT_BUF(b1); 288 289 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR) 290 return 0; 291 len -= NLMSG_LENGTH(sizeof(*ifa)); 292 if (len < 0) { 293 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); 294 return -1; 295 } 296 297 if (filter.flushb && n->nlmsg_type != RTM_NEWADDR) 298 return 0; 299 300 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); 301 302 if (!rta_tb[IFA_LOCAL]) 303 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS]; 304 if (!rta_tb[IFA_ADDRESS]) 305 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL]; 306 307 if (filter.ifindex && filter.ifindex != ifa->ifa_index) 308 return 0; 309 if ((filter.scope^ifa->ifa_scope)&filter.scopemask) 310 return 0; 311 if ((filter.flags^ifa->ifa_flags)&filter.flagmask) 312 return 0; 313 if (filter.label) { 314 SPRINT_BUF(b1); 315 const char *label; 316 if (rta_tb[IFA_LABEL]) 317 label = RTA_DATA(rta_tb[IFA_LABEL]); 318 else 319 label = ll_idx_n2a(ifa->ifa_index, b1); 320 if (fnmatch(filter.label, label, 0) != 0) 321 return 0; 322 } 323 if (filter.pfx.family) { 324 if (rta_tb[IFA_LOCAL]) { 325 inet_prefix dst; 326 memset(&dst, 0, sizeof(dst)); 327 dst.family = ifa->ifa_family; 328 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL])); 329 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) 330 return 0; 331 } 332 } 333 334 if (filter.family && filter.family != ifa->ifa_family) 335 return 0; 336 337 if (filter.flushb) { 338 struct nlmsghdr *fn; 339 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { 340 if (flush_update()) 341 return -1; 342 } 343 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp)); 344 memcpy(fn, n, n->nlmsg_len); 345 fn->nlmsg_type = RTM_DELADDR; 346 fn->nlmsg_flags = NLM_F_REQUEST; 347 fn->nlmsg_seq = ++rth.seq; 348 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb; 349 filter.flushed++; 350 if (show_stats < 2) 351 return 0; 352 } 353 354 if (n->nlmsg_type == RTM_DELADDR) 355 fprintf(fp, "Deleted "); 356 357 if (filter.oneline || filter.flushb) 358 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index)); 359 if (ifa->ifa_family == AF_INET) 360 fprintf(fp, " inet "); 361 else if (ifa->ifa_family == AF_INET6) 362 fprintf(fp, " inet6 "); 363 else if (ifa->ifa_family == AF_DECnet) 364 fprintf(fp, " dnet "); 365 else if (ifa->ifa_family == AF_IPX) 366 fprintf(fp, " ipx "); 367 else 368 fprintf(fp, " family %d ", ifa->ifa_family); 369 370 if (rta_tb[IFA_LOCAL]) { 371 fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family, 372 RTA_PAYLOAD(rta_tb[IFA_LOCAL]), 373 RTA_DATA(rta_tb[IFA_LOCAL]), 374 abuf, sizeof(abuf))); 375 376 if (rta_tb[IFA_ADDRESS] == NULL || 377 memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) { 378 fprintf(fp, "/%d ", ifa->ifa_prefixlen); 379 } else { 380 fprintf(fp, " peer %s/%d ", 381 rt_addr_n2a(ifa->ifa_family, 382 RTA_PAYLOAD(rta_tb[IFA_ADDRESS]), 383 RTA_DATA(rta_tb[IFA_ADDRESS]), 384 abuf, sizeof(abuf)), 385 ifa->ifa_prefixlen); 386 } 387 } 388 389 if (rta_tb[IFA_BROADCAST]) { 390 fprintf(fp, "brd %s ", 391 rt_addr_n2a(ifa->ifa_family, 392 RTA_PAYLOAD(rta_tb[IFA_BROADCAST]), 393 RTA_DATA(rta_tb[IFA_BROADCAST]), 394 abuf, sizeof(abuf))); 395 } 396 if (rta_tb[IFA_ANYCAST]) { 397 fprintf(fp, "any %s ", 398 rt_addr_n2a(ifa->ifa_family, 399 RTA_PAYLOAD(rta_tb[IFA_ANYCAST]), 400 RTA_DATA(rta_tb[IFA_ANYCAST]), 401 abuf, sizeof(abuf))); 402 } 403 fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1))); 404 if (ifa->ifa_flags&IFA_F_SECONDARY) { 405 ifa->ifa_flags &= ~IFA_F_SECONDARY; 406 fprintf(fp, "secondary "); 407 } 408 if (ifa->ifa_flags&IFA_F_TENTATIVE) { 409 ifa->ifa_flags &= ~IFA_F_TENTATIVE; 410 fprintf(fp, "tentative "); 411 } 412 if (ifa->ifa_flags&IFA_F_DEPRECATED) { 413 ifa->ifa_flags &= ~IFA_F_DEPRECATED; 414 fprintf(fp, "deprecated "); 415 } 416 if (!(ifa->ifa_flags&IFA_F_PERMANENT)) { 417 fprintf(fp, "dynamic "); 418 } else 419 ifa->ifa_flags &= ~IFA_F_PERMANENT; 420 if (ifa->ifa_flags) 421 fprintf(fp, "flags %02x ", ifa->ifa_flags); 422 if (rta_tb[IFA_LABEL]) 423 fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL])); 424 if (rta_tb[IFA_CACHEINFO]) { 425 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]); 426 char buf[128]; 427 fprintf(fp, "%s", _SL_); 428 if (ci->ifa_valid == 0xFFFFFFFFU) 429 sprintf(buf, "valid_lft forever"); 430 else 431 sprintf(buf, "valid_lft %dsec", ci->ifa_valid); 432 if (ci->ifa_prefered == 0xFFFFFFFFU) 433 sprintf(buf+strlen(buf), " preferred_lft forever"); 434 else 435 sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered); 436 fprintf(fp, " %s", buf); 437 } 438 fprintf(fp, "\n"); 439 fflush(fp); 440 return 0; 441} 442 443 444struct nlmsg_list 445{ 446 struct nlmsg_list *next; 447 struct nlmsghdr h; 448}; 449 450int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp) 451{ 452 for ( ;ainfo ; ainfo = ainfo->next) { 453 struct nlmsghdr *n = &ainfo->h; 454 struct ifaddrmsg *ifa = NLMSG_DATA(n); 455 456 if (n->nlmsg_type != RTM_NEWADDR) 457 continue; 458 459 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa))) 460 return -1; 461 462 if (ifa->ifa_index != ifindex || 463 (filter.family && filter.family != ifa->ifa_family)) 464 continue; 465 466 print_addrinfo(NULL, n, fp); 467 } 468 return 0; 469} 470 471 472static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, 473 void *arg) 474{ 475 struct nlmsg_list **linfo = (struct nlmsg_list**)arg; 476 struct nlmsg_list *h; 477 struct nlmsg_list **lp; 478 479 h = malloc(n->nlmsg_len+sizeof(void*)); 480 if (h == NULL) 481 return -1; 482 483 memcpy(&h->h, n, n->nlmsg_len); 484 h->next = NULL; 485 486 for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */; 487 *lp = h; 488 489 ll_remember_index(who, n, NULL); 490 return 0; 491} 492 493int ipaddr_list_or_flush(int argc, char **argv, int flush) 494{ 495 struct nlmsg_list *linfo = NULL; 496 struct nlmsg_list *ainfo = NULL; 497 struct nlmsg_list *l, *n; 498 char *filter_dev = NULL; 499 int no_link = 0; 500 501 ipaddr_reset_filter(oneline); 502 filter.showqueue = 1; 503 504 if (filter.family == AF_UNSPEC) 505 filter.family = preferred_family; 506 507 if (flush) { 508 if (argc <= 0) { 509 fprintf(stderr, "Flush requires arguments.\n"); 510 return -1; 511 } 512 if (filter.family == AF_PACKET) { 513 fprintf(stderr, "Cannot flush link addresses.\n"); 514 return -1; 515 } 516 } 517 518 while (argc > 0) { 519 if (strcmp(*argv, "to") == 0) { 520 NEXT_ARG(); 521 get_prefix(&filter.pfx, *argv, filter.family); 522 if (filter.family == AF_UNSPEC) 523 filter.family = filter.pfx.family; 524 } else if (strcmp(*argv, "scope") == 0) { 525 unsigned scope = 0; 526 NEXT_ARG(); 527 filter.scopemask = -1; 528 if (rtnl_rtscope_a2n(&scope, *argv)) { 529 if (strcmp(*argv, "all") != 0) 530 invarg("invalid \"scope\"\n", *argv); 531 scope = RT_SCOPE_NOWHERE; 532 filter.scopemask = 0; 533 } 534 filter.scope = scope; 535 } else if (strcmp(*argv, "up") == 0) { 536 filter.up = 1; 537 } else if (strcmp(*argv, "dynamic") == 0) { 538 filter.flags &= ~IFA_F_PERMANENT; 539 filter.flagmask |= IFA_F_PERMANENT; 540 } else if (strcmp(*argv, "permanent") == 0) { 541 filter.flags |= IFA_F_PERMANENT; 542 filter.flagmask |= IFA_F_PERMANENT; 543 } else if (strcmp(*argv, "secondary") == 0) { 544 filter.flags |= IFA_F_SECONDARY; 545 filter.flagmask |= IFA_F_SECONDARY; 546 } else if (strcmp(*argv, "primary") == 0) { 547 filter.flags &= ~IFA_F_SECONDARY; 548 filter.flagmask |= IFA_F_SECONDARY; 549 } else if (strcmp(*argv, "tentative") == 0) { 550 filter.flags |= IFA_F_TENTATIVE; 551 filter.flagmask |= IFA_F_TENTATIVE; 552 } else if (strcmp(*argv, "deprecated") == 0) { 553 filter.flags |= IFA_F_DEPRECATED; 554 filter.flagmask |= IFA_F_DEPRECATED; 555 } else if (strcmp(*argv, "label") == 0) { 556 NEXT_ARG(); 557 filter.label = *argv; 558 } else { 559 if (strcmp(*argv, "dev") == 0) { 560 NEXT_ARG(); 561 } 562 if (matches(*argv, "help") == 0) 563 usage(); 564 if (filter_dev) 565 duparg2("dev", *argv); 566 filter_dev = *argv; 567 } 568 argv++; argc--; 569 } 570 571 if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) { 572 perror("Cannot send dump request"); 573 exit(1); 574 } 575 576 if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) { 577 fprintf(stderr, "Dump terminated\n"); 578 exit(1); 579 } 580 581 if (filter_dev) { 582 filter.ifindex = ll_name_to_index(filter_dev); 583 if (filter.ifindex <= 0) { 584 fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev); 585 return -1; 586 } 587 } 588 589 if (flush) { 590 int round = 0; 591 char flushb[4096-512]; 592 593 filter.flushb = flushb; 594 filter.flushp = 0; 595 filter.flushe = sizeof(flushb); 596 597 for (;;) { 598 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) { 599 perror("Cannot send dump request"); 600 exit(1); 601 } 602 filter.flushed = 0; 603 if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) { 604 fprintf(stderr, "Flush terminated\n"); 605 exit(1); 606 } 607 if (filter.flushed == 0) { 608 if (round == 0) { 609 fprintf(stderr, "Nothing to flush.\n"); 610 } else if (show_stats) 611 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":""); 612 fflush(stdout); 613 return 0; 614 } 615 round++; 616 if (flush_update() < 0) 617 return 1; 618 619 if (show_stats) { 620 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed); 621 fflush(stdout); 622 } 623 } 624 } 625 626 if (filter.family != AF_PACKET) { 627 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) { 628 perror("Cannot send dump request"); 629 exit(1); 630 } 631 632 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) { 633 fprintf(stderr, "Dump terminated\n"); 634 exit(1); 635 } 636 } 637 638 639 if (filter.family && filter.family != AF_PACKET) { 640 struct nlmsg_list **lp; 641 lp=&linfo; 642 643 if (filter.oneline) 644 no_link = 1; 645 646 while ((l=*lp)!=NULL) { 647 int ok = 0; 648 struct ifinfomsg *ifi = NLMSG_DATA(&l->h); 649 struct nlmsg_list *a; 650 651 for (a=ainfo; a; a=a->next) { 652 struct nlmsghdr *n = &a->h; 653 struct ifaddrmsg *ifa = NLMSG_DATA(n); 654 655 if (ifa->ifa_index != ifi->ifi_index || 656 (filter.family && filter.family != ifa->ifa_family)) 657 continue; 658 if ((filter.scope^ifa->ifa_scope)&filter.scopemask) 659 continue; 660 if ((filter.flags^ifa->ifa_flags)&filter.flagmask) 661 continue; 662 if (filter.pfx.family || filter.label) { 663 struct rtattr *tb[IFA_MAX+1]; 664 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n)); 665 if (!tb[IFA_LOCAL]) 666 tb[IFA_LOCAL] = tb[IFA_ADDRESS]; 667 668 if (filter.pfx.family && tb[IFA_LOCAL]) { 669 inet_prefix dst; 670 memset(&dst, 0, sizeof(dst)); 671 dst.family = ifa->ifa_family; 672 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL])); 673 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) 674 continue; 675 } 676 if (filter.label) { 677 SPRINT_BUF(b1); 678 const char *label; 679 if (tb[IFA_LABEL]) 680 label = RTA_DATA(tb[IFA_LABEL]); 681 else 682 label = ll_idx_n2a(ifa->ifa_index, b1); 683 if (fnmatch(filter.label, label, 0) != 0) 684 continue; 685 } 686 } 687 688 ok = 1; 689 break; 690 } 691 if (!ok) 692 *lp = l->next; 693 else 694 lp = &l->next; 695 } 696 } 697 698 for (l=linfo; l; l = n) { 699 n = l->next; 700 if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) { 701 struct ifinfomsg *ifi = NLMSG_DATA(&l->h); 702 if (filter.family != AF_PACKET) 703 print_selected_addrinfo(ifi->ifi_index, ainfo, stdout); 704 } 705 fflush(stdout); 706 free(l); 707 } 708 709 return 0; 710} 711 712int ipaddr_list_link(int argc, char **argv) 713{ 714 preferred_family = AF_PACKET; 715 do_link = 1; 716 return ipaddr_list_or_flush(argc, argv, 0); 717} 718 719void ipaddr_reset_filter(int oneline) 720{ 721 memset(&filter, 0, sizeof(filter)); 722 filter.oneline = oneline; 723} 724 725int default_scope(inet_prefix *lcl) 726{ 727 if (lcl->family == AF_INET) { 728 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127) 729 return RT_SCOPE_HOST; 730 } 731 return 0; 732} 733 734int ipaddr_modify(int cmd, int argc, char **argv) 735{ 736 struct { 737 struct nlmsghdr n; 738 struct ifaddrmsg ifa; 739 char buf[256]; 740 } req; 741 char *d = NULL; 742 char *l = NULL; 743 char *lcl_arg = NULL; 744 inet_prefix lcl; 745 inet_prefix peer; 746 int local_len = 0; 747 int peer_len = 0; 748 int brd_len = 0; 749 int any_len = 0; 750 int scoped = 0; 751 752 memset(&req, 0, sizeof(req)); 753 754 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); 755 req.n.nlmsg_flags = NLM_F_REQUEST; 756 req.n.nlmsg_type = cmd; 757 req.ifa.ifa_family = preferred_family; 758 759 while (argc > 0) { 760 if (strcmp(*argv, "peer") == 0 || 761 strcmp(*argv, "remote") == 0) { 762 NEXT_ARG(); 763 764 if (peer_len) 765 duparg("peer", *argv); 766 get_prefix(&peer, *argv, req.ifa.ifa_family); 767 peer_len = peer.bytelen; 768 if (req.ifa.ifa_family == AF_UNSPEC) 769 req.ifa.ifa_family = peer.family; 770 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen); 771 req.ifa.ifa_prefixlen = peer.bitlen; 772 } else if (matches(*argv, "broadcast") == 0 || 773 strcmp(*argv, "brd") == 0) { 774 inet_prefix addr; 775 NEXT_ARG(); 776 if (brd_len) 777 duparg("broadcast", *argv); 778 if (strcmp(*argv, "+") == 0) 779 brd_len = -1; 780 else if (strcmp(*argv, "-") == 0) 781 brd_len = -2; 782 else { 783 get_addr(&addr, *argv, req.ifa.ifa_family); 784 if (req.ifa.ifa_family == AF_UNSPEC) 785 req.ifa.ifa_family = addr.family; 786 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen); 787 brd_len = addr.bytelen; 788 } 789 } else if (strcmp(*argv, "anycast") == 0) { 790 inet_prefix addr; 791 NEXT_ARG(); 792 if (any_len) 793 duparg("anycast", *argv); 794 get_addr(&addr, *argv, req.ifa.ifa_family); 795 if (req.ifa.ifa_family == AF_UNSPEC) 796 req.ifa.ifa_family = addr.family; 797 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen); 798 any_len = addr.bytelen; 799 } else if (strcmp(*argv, "scope") == 0) { 800 unsigned scope = 0; 801 NEXT_ARG(); 802 if (rtnl_rtscope_a2n(&scope, *argv)) 803 invarg(*argv, "invalid scope value."); 804 req.ifa.ifa_scope = scope; 805 scoped = 1; 806 } else if (strcmp(*argv, "dev") == 0) { 807 NEXT_ARG(); 808 d = *argv; 809 } else if (strcmp(*argv, "label") == 0) { 810 NEXT_ARG(); 811 l = *argv; 812 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1); 813 } else { 814 if (strcmp(*argv, "local") == 0) { 815 NEXT_ARG(); 816 } 817 if (matches(*argv, "help") == 0) 818 usage(); 819 if (local_len) 820 duparg2("local", *argv); 821 lcl_arg = *argv; 822 get_prefix(&lcl, *argv, req.ifa.ifa_family); 823 if (req.ifa.ifa_family == AF_UNSPEC) 824 req.ifa.ifa_family = lcl.family; 825 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen); 826 local_len = lcl.bytelen; 827 } 828 argc--; argv++; 829 } 830 if (d == NULL) { 831 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n"); 832 return -1; 833 } 834 if (l && matches(d, l) != 0) { 835 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l); 836 exit(1); 837 } 838 839 if (peer_len == 0 && local_len) { 840 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) { 841 fprintf(stderr, 842 "Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \ 843 " Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \ 844 " This special behaviour is likely to disappear in further releases,\n" \ 845 " fix your scripts!\n", lcl_arg, local_len*8); 846 } else { 847 peer = lcl; 848 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen); 849 } 850 } 851 if (req.ifa.ifa_prefixlen == 0) 852 req.ifa.ifa_prefixlen = lcl.bitlen; 853 854 if (brd_len < 0 && cmd != RTM_DELADDR) { 855 inet_prefix brd; 856 int i; 857 if (req.ifa.ifa_family != AF_INET) { 858 fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n"); 859 return -1; 860 } 861 brd = peer; 862 if (brd.bitlen <= 30) { 863 for (i=31; i>=brd.bitlen; i--) { 864 if (brd_len == -1) 865 brd.data[0] |= htonl(1<<(31-i)); 866 else 867 brd.data[0] &= ~htonl(1<<(31-i)); 868 } 869 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen); 870 brd_len = brd.bytelen; 871 } 872 } 873 if (!scoped && cmd != RTM_DELADDR) 874 req.ifa.ifa_scope = default_scope(&lcl); 875 876 ll_init_map(&rth); 877 878 if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) { 879 fprintf(stderr, "Cannot find device \"%s\"\n", d); 880 return -1; 881 } 882 883 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) 884 exit(2); 885 886 return 0; 887} 888 889int do_ipaddr(int argc, char **argv) 890{ 891 if (argc < 1) 892 return ipaddr_list_or_flush(0, NULL, 0); 893 if (matches(*argv, "add") == 0) 894 return ipaddr_modify(RTM_NEWADDR, argc-1, argv+1); 895 if (matches(*argv, "delete") == 0) 896 return ipaddr_modify(RTM_DELADDR, argc-1, argv+1); 897 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 898 || matches(*argv, "lst") == 0) 899 return ipaddr_list_or_flush(argc-1, argv+1, 0); 900 if (matches(*argv, "flush") == 0) 901 return ipaddr_list_or_flush(argc-1, argv+1, 1); 902 if (matches(*argv, "help") == 0) 903 usage(); 904 fprintf(stderr, "Command \"%s\" is unknown, try \"ip address help\".\n", *argv); 905 exit(-1); 906} 907 908