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 <fcntl.h>
  18 #include <sys/ioctl.h>
  19 #include <sys/socket.h>
  20 #include <sys/ioctl.h>
  21 #include <sys/errno.h>
  22 #include <netinet/in.h>
  23 #include <arpa/inet.h>
  24 #include <string.h>
  25 #include <fnmatch.h>
  26
  27 #include <linux/netdevice.h>
  28 #include <linux/if_arp.h>
  29 #include <linux/sockios.h>
  30
  31 #include "rt_names.h"
  32 #include "utils.h"
  33 #include "ll_map.h"
  34 #include "ip_common.h"
  35
  36 #define MAX_ROUNDS 10
  37
  38 static struct
  39 {
  40         int ifindex;
  41         int family;
  42         int oneline;
  43         int showqueue;
  44         inet_prefix pfx;
  45         int scope, scopemask;
  46         int flags, flagmask;
  47         int up;
  48         char *label;
  49         int flushed;
  50         char *flushb;
  51         int flushp;
  52         int flushe;
  53 } filter;
  54
  55 static int do_link;
  56
  57 static void usage(void) __attribute__((noreturn));
  58
  59 static void usage(void)
  60 {
  61         if (do_link) {
  62                 iplink_usage();
  63         }
  64         fprintf(stderr, "Usage: ip addr {add|change|replace} IFADDR dev STRING [ LIFETIME ]\n");
  65         fprintf(stderr, "                                                      [ CONFFLAG-LIST ]\n");
  66         fprintf(stderr, "       ip addr del IFADDR dev STRING\n");
  67         fprintf(stderr, "       ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
  68         fprintf(stderr, "                            [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
  69         fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
  70         fprintf(stderr, "          [ broadcast ADDR ] [ anycast ADDR ]\n");
  71         fprintf(stderr, "          [ label STRING ] [ scope SCOPE-ID ]\n");
  72         fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
  73         fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
  74         fprintf(stderr, "FLAG  := [ permanent | dynamic | secondary | primary |\n");
  75         fprintf(stderr, "           tentative | deprecated | dadfailed | temporary |\n");
  76         fprintf(stderr, "           CONFFLAG-LIST ]\n");
  77         fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
  78         fprintf(stderr, "CONFFLAG  := [ home | nodad ]\n");
  79         fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
  80         fprintf(stderr, "LFT := forever | SECONDS\n");
  81
  82         exit(-1);
  83 }
  84
  85 void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
  86 {
  87         fprintf(fp, "<");
  88         if (flags & IFF_UP && !(flags & IFF_RUNNING))
  89                 fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
  90         flags &= ~IFF_RUNNING;
  91 #define _PF(f) if (flags&IFF_##f) { \
  92                   flags &= ~IFF_##f ; \
  93                   fprintf(fp, #f "%s", flags ? "," : ""); }
  94         _PF(LOOPBACK);
  95         _PF(BROADCAST);
  96         _PF(POINTOPOINT);
  97         _PF(MULTICAST);
  98         _PF(NOARP);
  99         _PF(ALLMULTI);
 100         _PF(PROMISC);
 101         _PF(MASTER);
 102         _PF(SLAVE);
 103         _PF(DEBUG);
 104         _PF(DYNAMIC);
 105         _PF(AUTOMEDIA);
 106         _PF(PORTSEL);
 107         _PF(NOTRAILERS);
 108         _PF(UP);
 109         _PF(LOWER_UP);
 110         _PF(DORMANT);
 111         _PF(ECHO);
 112 #undef _PF
 113         if (flags)
 114                 fprintf(fp, "%x", flags);
 115         if (mdown)
 116                 fprintf(fp, ",M-DOWN");
 117         fprintf(fp, "> ");
 118 }
 119
 120 static const char *oper_states[] = {
 121         "UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
 122         "TESTING", "DORMANT",    "UP"
 123 };
 124
 125 static void print_operstate(FILE *f, __u8 state)
 126 {
 127         if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
 128                 fprintf(f, "state %#x ", state);
 129         else
 130                 fprintf(f, "state %s ", oper_states[state]);
 131 }
 132
 133 static void print_queuelen(FILE *f, const char *name)
 134 {
 135         struct ifreq ifr;
 136         int s;
 137
 138         s = socket(AF_INET, SOCK_STREAM, 0);
 139         if (s < 0)
 140                 return;
 141
 142         memset(&ifr, 0, sizeof(ifr));
 143         strcpy(ifr.ifr_name, name);
 144         if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
 145                 fprintf(f, "ioctl(SIOCGIFXQLEN) failed: %s\n", strerror(errno));
 146                 close(s);
 147                 return;
 148         }
 149         close(s);
 150
 151         if (ifr.ifr_qlen)
 152                 fprintf(f, "qlen %d", ifr.ifr_qlen);
 153 }
 154
 155 static void print_linktype(FILE *fp, struct rtattr *tb)
 156 {
 157         struct rtattr *linkinfo[IFLA_INFO_MAX+1];
 158         struct link_util *lu;
 159         char *kind;
 160
 161         parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
 162
 163         if (!linkinfo[IFLA_INFO_KIND])
 164                 return;
 165         kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
 166
 167         fprintf(fp, "%s", _SL_);
 168         fprintf(fp, "    %s ", kind);
 169
 170         lu = get_link_kind(kind);
 171         if (!lu || !lu->print_opt)
 172                 return;
 173
 174         if (1) {
 175                 struct rtattr *attr[lu->maxattr+1], **data = NULL;
 176
 177                 if (linkinfo[IFLA_INFO_DATA]) {
 178                         parse_rtattr_nested(attr, lu->maxattr,
 179                                             linkinfo[IFLA_INFO_DATA]);
 180                         data = attr;
 181                 }
 182                 lu->print_opt(lu, fp, data);
 183
 184                 if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
 185                     lu->print_xstats)
 186                         lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
 187         }
 188 }
 189
 190 int print_linkinfo(const struct sockaddr_nl *who,
 191                    struct nlmsghdr *n, void *arg)
 192 {
 193         FILE *fp = (FILE*)arg;
 194         struct ifinfomsg *ifi = NLMSG_DATA(n);
 195         struct rtattr * tb[IFLA_MAX+1];
 196         int len = n->nlmsg_len;
 197         unsigned m_flag = 0;
 198
 199         if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
 200                 return 0;
 201
 202         len -= NLMSG_LENGTH(sizeof(*ifi));
 203         if (len < 0)
 204                 return -1;
 205
 206         if (filter.ifindex && ifi->ifi_index != filter.ifindex)
 207                 return 0;
 208         if (filter.up && !(ifi->ifi_flags&IFF_UP))
 209                 return 0;
 210
 211         parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
 212         if (tb[IFLA_IFNAME] == NULL) {
 213                 fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
 214         }
 215         if (filter.label &&
 216             (!filter.family || filter.family == AF_PACKET) &&
 217             fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
 218                 return 0;
 219
 220         if (n->nlmsg_type == RTM_DELLINK)
 221                 fprintf(fp, "Deleted ");
 222
 223         fprintf(fp, "%d: %s", ifi->ifi_index,
 224                 tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
 225
 226         if (tb[IFLA_LINK]) {
 227                 SPRINT_BUF(b1);
 228                 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
 229                 if (iflink == 0)
 230                         fprintf(fp, "@NONE: ");
 231                 else {
 232                         fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
 233                         m_flag = ll_index_to_flags(iflink);
 234                         m_flag = !(m_flag & IFF_UP);
 235                 }
 236         } else {
 237                 fprintf(fp, ": ");
 238         }
 239         print_link_flags(fp, ifi->ifi_flags, m_flag);
 240
 241         if (tb[IFLA_MTU])
 242                 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
 243         if (tb[IFLA_QDISC])
 244                 fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
 245 #ifdef IFLA_MASTER
 246         if (tb[IFLA_MASTER]) {
 247                 SPRINT_BUF(b1);
 248                 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
 249         }
 250 #endif
 251         if (tb[IFLA_OPERSTATE])
 252                 print_operstate(fp, *(__u8 *)RTA_DATA(tb[IFLA_OPERSTATE]));
 253
 254         if (filter.showqueue)
 255                 print_queuelen(fp, (char*)RTA_DATA(tb[IFLA_IFNAME]));
 256
 257         if (!filter.family || filter.family == AF_PACKET) {
 258                 SPRINT_BUF(b1);
 259                 fprintf(fp, "%s", _SL_);
 260                 fprintf(fp, "    link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
 261
 262                 if (tb[IFLA_ADDRESS]) {
 263                         fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
 264                                                       RTA_PAYLOAD(tb[IFLA_ADDRESS]),
 265                                                       ifi->ifi_type,
 266                                                       b1, sizeof(b1)));
 267                 }
 268                 if (tb[IFLA_BROADCAST]) {
 269                         if (ifi->ifi_flags&IFF_POINTOPOINT)
 270                                 fprintf(fp, " peer ");
 271                         else
 272                                 fprintf(fp, " brd ");
 273                         fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
 274                                                       RTA_PAYLOAD(tb[IFLA_BROADCAST]),
 275                                                       ifi->ifi_type,
 276                                                       b1, sizeof(b1)));
 277                 }
 278         }
 279
 280         if (do_link && tb[IFLA_LINKINFO] && show_details)
 281                 print_linktype(fp, tb[IFLA_LINKINFO]);
 282
 283         if (do_link && tb[IFLA_IFALIAS])
 284                 fprintf(fp,"\n    alias %s",
 285                         (const char *) RTA_DATA(tb[IFLA_IFALIAS]));
 286
 287         if (do_link && tb[IFLA_STATS] && show_stats) {
 288                 struct rtnl_link_stats slocal;
 289                 struct rtnl_link_stats *s = RTA_DATA(tb[IFLA_STATS]);
 290                 if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
 291                         memcpy(&slocal, s, sizeof(slocal));
 292                         s = &slocal;
 293                 }
 294                 fprintf(fp, "%s", _SL_);
 295                 fprintf(fp, "    RX: bytes  packets  errors  dropped overrun mcast   %s%s",
 296                         s->rx_compressed ? "compressed" : "", _SL_);
 297                 fprintf(fp, "    %-10u %-8u %-7u %-7u %-7u %-7u",
 298                         s->rx_bytes, s->rx_packets, s->rx_errors,
 299                         s->rx_dropped, s->rx_over_errors,
 300                         s->multicast
 301                         );
 302                 if (s->rx_compressed)
 303                         fprintf(fp, " %-7u", s->rx_compressed);
 304                 if (show_stats > 1) {
 305                         fprintf(fp, "%s", _SL_);
 306                         fprintf(fp, "    RX errors: length  crc     frame   fifo    missed%s", _SL_);
 307                         fprintf(fp, "               %-7u  %-7u %-7u %-7u %-7u",
 308                                 s->rx_length_errors,
 309                                 s->rx_crc_errors,
 310                                 s->rx_frame_errors,
 311                                 s->rx_fifo_errors,
 312                                 s->rx_missed_errors
 313                                 );
 314                 }
 315                 fprintf(fp, "%s", _SL_);
 316                 fprintf(fp, "    TX: bytes  packets  errors  dropped carrier collsns %s%s",
 317                         s->tx_compressed ? "compressed" : "", _SL_);
 318                 fprintf(fp, "    %-10u %-8u %-7u %-7u %-7u %-7u",
 319                         s->tx_bytes, s->tx_packets, s->tx_errors,
 320                         s->tx_dropped, s->tx_carrier_errors, s->collisions);
 321                 if (s->tx_compressed)
 322                         fprintf(fp, " %-7u", s->tx_compressed);
 323                 if (show_stats > 1) {
 324                         fprintf(fp, "%s", _SL_);
 325                         fprintf(fp, "    TX errors: aborted fifo    window  heartbeat%s", _SL_);
 326                         fprintf(fp, "               %-7u  %-7u %-7u %-7u",
 327                                 s->tx_aborted_errors,
 328                                 s->tx_fifo_errors,
 329                                 s->tx_window_errors,
 330                                 s->tx_heartbeat_errors
 331                                 );
 332                 }
 333         }
 334         if (do_link && tb[IFLA_VFINFO] && tb[IFLA_NUM_VF]) {
 335                 SPRINT_BUF(b1);
 336                 struct rtattr *rta = tb[IFLA_VFINFO];
 337                 struct ifla_vf_info *ivi;
 338                 int i;
 339                 for (i = 0; i < *(int *)RTA_DATA(tb[IFLA_NUM_VF]); i++) {
 340                         if (rta->rta_type != IFLA_VFINFO) {
 341                                 fprintf(stderr, "BUG: rta type is %d\n", rta->rta_type);
 342                                 break;
 343                         }
 344                         ivi = RTA_DATA(rta);
 345                         fprintf(fp, "\n    vf %d: MAC %s",
 346                                 ivi->vf,
 347                                 ll_addr_n2a((unsigned char *)&ivi->mac,
 348                                             ETH_ALEN, 0, b1, sizeof(b1)));
 349                                 if (ivi->vlan)
 350                                         fprintf(fp, ", vlan %d", ivi->vlan);
 351                                 if (ivi->qos)
 352                                         fprintf(fp, ", qos %d", ivi->qos);
 353                                 if (ivi->tx_rate)
 354                                         fprintf(fp, ", tx rate %d (Mbps_",
 355                                                 ivi->tx_rate);
 356                         rta = (struct rtattr *)((char *)rta + RTA_ALIGN(rta->rta_len));
 357                 }
 358         }
 359         fprintf(fp, "\n");
 360         fflush(fp);
 361         return 0;
 362 }
 363
 364 static int flush_update(void)
 365 {
 366         if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
 367                 perror("Failed to send flush request");
 368                 return -1;
 369         }
 370         filter.flushp = 0;
 371         return 0;
 372 }
 373
 374 static int set_lifetime(unsigned int *lifetime, char *argv)
 375 {
 376         if (strcmp(argv, "forever") == 0)
 377                 *lifetime = INFINITY_LIFE_TIME;
 378         else if (get_u32(lifetime, argv, 0))
 379                 return -1;
 380
 381         return 0;
 382 }
 383
 384 int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
 385                    void *arg)
 386 {
 387         FILE *fp = (FILE*)arg;
 388         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 389         int len = n->nlmsg_len;
 390         int deprecated = 0;
 391         struct rtattr * rta_tb[IFA_MAX+1];
 392         char abuf[256];
 393         SPRINT_BUF(b1);
 394
 395         if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
 396                 return 0;
 397         len -= NLMSG_LENGTH(sizeof(*ifa));
 398         if (len < 0) {
 399                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 400                 return -1;
 401         }
 402
 403         if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
 404                 return 0;
 405
 406         parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
 407
 408         if (!rta_tb[IFA_LOCAL])
 409                 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
 410         if (!rta_tb[IFA_ADDRESS])
 411                 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
 412
 413         if (filter.ifindex && filter.ifindex != ifa->ifa_index)
 414                 return 0;
 415         if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
 416                 return 0;
 417         if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
 418                 return 0;
 419         if (filter.label) {
 420                 SPRINT_BUF(b1);
 421                 const char *label;
 422                 if (rta_tb[IFA_LABEL])
 423                         label = RTA_DATA(rta_tb[IFA_LABEL]);
 424                 else
 425                         label = ll_idx_n2a(ifa->ifa_index, b1);
 426                 if (fnmatch(filter.label, label, 0) != 0)
 427                         return 0;
 428         }
 429         if (filter.pfx.family) {
 430                 if (rta_tb[IFA_LOCAL]) {
 431                         inet_prefix dst;
 432                         memset(&dst, 0, sizeof(dst));
 433                         dst.family = ifa->ifa_family;
 434                         memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
 435                         if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
 436                                 return 0;
 437                 }
 438         }
 439
 440         if (filter.family && filter.family != ifa->ifa_family)
 441                 return 0;
 442
 443         if (filter.flushb) {
 444                 struct nlmsghdr *fn;
 445                 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
 446                         if (flush_update())
 447                                 return -1;
 448                 }
 449                 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
 450                 memcpy(fn, n, n->nlmsg_len);
 451                 fn->nlmsg_type = RTM_DELADDR;
 452                 fn->nlmsg_flags = NLM_F_REQUEST;
 453                 fn->nlmsg_seq = ++rth.seq;
 454                 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
 455                 filter.flushed++;
 456                 if (show_stats < 2)
 457                         return 0;
 458         }
 459
 460         if (n->nlmsg_type == RTM_DELADDR)
 461                 fprintf(fp, "Deleted ");
 462
 463         if (filter.oneline || filter.flushb)
 464                 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
 465         if (ifa->ifa_family == AF_INET)
 466                 fprintf(fp, "    inet ");
 467         else if (ifa->ifa_family == AF_INET6)
 468                 fprintf(fp, "    inet6 ");
 469         else if (ifa->ifa_family == AF_DECnet)
 470                 fprintf(fp, "    dnet ");
 471         else if (ifa->ifa_family == AF_IPX)
 472                 fprintf(fp, "     ipx ");
 473         else
 474                 fprintf(fp, "    family %d ", ifa->ifa_family);
 475
 476         if (rta_tb[IFA_LOCAL]) {
 477                 fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
 478                                               RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
 479                                               RTA_DATA(rta_tb[IFA_LOCAL]),
 480                                               abuf, sizeof(abuf)));
 481
 482                 if (rta_tb[IFA_ADDRESS] == NULL ||
 483                     memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
 484                         fprintf(fp, "/%d ", ifa->ifa_prefixlen);
 485                 } else {
 486                         fprintf(fp, " peer %s/%d ",
 487                                 rt_addr_n2a(ifa->ifa_family,
 488                                             RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
 489                                             RTA_DATA(rta_tb[IFA_ADDRESS]),
 490                                             abuf, sizeof(abuf)),
 491                                 ifa->ifa_prefixlen);
 492                 }
 493         }
 494
 495         if (rta_tb[IFA_BROADCAST]) {
 496                 fprintf(fp, "brd %s ",
 497                         rt_addr_n2a(ifa->ifa_family,
 498                                     RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
 499                                     RTA_DATA(rta_tb[IFA_BROADCAST]),
 500                                     abuf, sizeof(abuf)));
 501         }
 502         if (rta_tb[IFA_ANYCAST]) {
 503                 fprintf(fp, "any %s ",
 504                         rt_addr_n2a(ifa->ifa_family,
 505                                     RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
 506                                     RTA_DATA(rta_tb[IFA_ANYCAST]),
 507                                     abuf, sizeof(abuf)));
 508         }
 509         fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
 510         if (ifa->ifa_flags&IFA_F_SECONDARY) {
 511                 ifa->ifa_flags &= ~IFA_F_SECONDARY;
 512                 if (ifa->ifa_family == AF_INET6)
 513                         fprintf(fp, "temporary ");
 514                 else
 515                         fprintf(fp, "secondary ");
 516         }
 517         if (ifa->ifa_flags&IFA_F_TENTATIVE) {
 518                 ifa->ifa_flags &= ~IFA_F_TENTATIVE;
 519                 fprintf(fp, "tentative ");
 520         }
 521         if (ifa->ifa_flags&IFA_F_DEPRECATED) {
 522                 ifa->ifa_flags &= ~IFA_F_DEPRECATED;
 523                 deprecated = 1;
 524                 fprintf(fp, "deprecated ");
 525         }
 526         if (ifa->ifa_flags&IFA_F_HOMEADDRESS) {
 527                 ifa->ifa_flags &= ~IFA_F_HOMEADDRESS;
 528                 fprintf(fp, "home ");
 529         }
 530         if (ifa->ifa_flags&IFA_F_NODAD) {
 531                 ifa->ifa_flags &= ~IFA_F_NODAD;
 532                 fprintf(fp, "nodad ");
 533         }
 534         if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
 535                 fprintf(fp, "dynamic ");
 536         } else
 537                 ifa->ifa_flags &= ~IFA_F_PERMANENT;
 538         if (ifa->ifa_flags&IFA_F_DADFAILED) {
 539                 ifa->ifa_flags &= ~IFA_F_DADFAILED;
 540                 fprintf(fp, "dadfailed ");
 541         }
 542         if (ifa->ifa_flags)
 543                 fprintf(fp, "flags %02x ", ifa->ifa_flags);
 544         if (rta_tb[IFA_LABEL])
 545                 fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
 546         if (rta_tb[IFA_CACHEINFO]) {
 547                 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
 548                 char buf[128];
 549                 fprintf(fp, "%s", _SL_);
 550                 if (ci->ifa_valid == INFINITY_LIFE_TIME)
 551                         sprintf(buf, "valid_lft forever");
 552                 else
 553                         sprintf(buf, "valid_lft %usec", ci->ifa_valid);
 554                 if (ci->ifa_prefered == INFINITY_LIFE_TIME)
 555                         sprintf(buf+strlen(buf), " preferred_lft forever");
 556                 else {
 557                         if (deprecated)
 558                                 sprintf(buf+strlen(buf), " preferred_lft %dsec",
 559                                         ci->ifa_prefered);
 560                         else
 561                                 sprintf(buf+strlen(buf), " preferred_lft %usec",
 562                                         ci->ifa_prefered);
 563                 }
 564                 fprintf(fp, "       %s", buf);
 565         }
 566         fprintf(fp, "\n");
 567         fflush(fp);
 568         return 0;
 569 }
 570
 571 int print_addrinfo_primary(const struct sockaddr_nl *who, struct nlmsghdr *n,
 572                            void *arg)
 573 {
 574         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 575
 576         if (!ifa->ifa_flags & IFA_F_SECONDARY)
 577                 return 0;
 578
 579         return print_addrinfo(who, n, arg);
 580 }
 581
 582 int print_addrinfo_secondary(const struct sockaddr_nl *who, struct nlmsghdr *n,
 583                              void *arg)
 584 {
 585         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 586
 587         if (ifa->ifa_flags & IFA_F_SECONDARY)
 588                 return 0;
 589
 590         return print_addrinfo(who, n, arg);
 591 }
 592
 593 struct nlmsg_list
 594 {
 595         struct nlmsg_list *next;
 596         struct nlmsghdr   h;
 597 };
 598
 599 static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
 600 {
 601         for ( ;ainfo ;  ainfo = ainfo->next) {
 602                 struct nlmsghdr *n = &ainfo->h;
 603                 struct ifaddrmsg *ifa = NLMSG_DATA(n);
 604
 605                 if (n->nlmsg_type != RTM_NEWADDR)
 606                         continue;
 607
 608                 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
 609                         return -1;
 610
 611                 if (ifa->ifa_index != ifindex ||
 612                     (filter.family && filter.family != ifa->ifa_family))
 613                         continue;
 614
 615                 print_addrinfo(NULL, n, fp);
 616         }
 617         return 0;
 618 }
 619
 620
 621 static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
 622                        void *arg)
 623 {
 624         struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
 625         struct nlmsg_list *h;
 626         struct nlmsg_list **lp;
 627
 628         h = malloc(n->nlmsg_len+sizeof(void*));
 629         if (h == NULL)
 630                 return -1;
 631
 632         memcpy(&h->h, n, n->nlmsg_len);
 633         h->next = NULL;
 634
 635         for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
 636         *lp = h;
 637
 638         ll_remember_index(who, n, NULL);
 639         return 0;
 640 }
 641
 642 static int ipaddr_list_or_flush(int argc, char **argv, int flush)
 643 {
 644         struct nlmsg_list *linfo = NULL;
 645         struct nlmsg_list *ainfo = NULL;
 646         struct nlmsg_list *l, *n;
 647         char *filter_dev = NULL;
 648         int no_link = 0;
 649
 650         ipaddr_reset_filter(oneline);
 651         filter.showqueue = 1;
 652
 653         if (filter.family == AF_UNSPEC)
 654                 filter.family = preferred_family;
 655
 656         if (flush) {
 657                 if (argc <= 0) {
 658                         fprintf(stderr, "Flush requires arguments.\n");
 659                         return -1;
 660                 }
 661                 if (filter.family == AF_PACKET) {
 662                         fprintf(stderr, "Cannot flush link addresses.\n");
 663                         return -1;
 664                 }
 665         }
 666
 667         while (argc > 0) {
 668                 if (strcmp(*argv, "to") == 0) {
 669                         NEXT_ARG();
 670                         get_prefix(&filter.pfx, *argv, filter.family);
 671                         if (filter.family == AF_UNSPEC)
 672                                 filter.family = filter.pfx.family;
 673                 } else if (strcmp(*argv, "scope") == 0) {
 674                         unsigned scope = 0;
 675                         NEXT_ARG();
 676                         filter.scopemask = -1;
 677                         if (rtnl_rtscope_a2n(&scope, *argv)) {
 678                                 if (strcmp(*argv, "all") != 0)
 679                                         invarg("invalid \"scope\"\n", *argv);
 680                                 scope = RT_SCOPE_NOWHERE;
 681                                 filter.scopemask = 0;
 682                         }
 683                         filter.scope = scope;
 684                 } else if (strcmp(*argv, "up") == 0) {
 685                         filter.up = 1;
 686                 } else if (strcmp(*argv, "dynamic") == 0) {
 687                         filter.flags &= ~IFA_F_PERMANENT;
 688                         filter.flagmask |= IFA_F_PERMANENT;
 689                 } else if (strcmp(*argv, "permanent") == 0) {
 690                         filter.flags |= IFA_F_PERMANENT;
 691                         filter.flagmask |= IFA_F_PERMANENT;
 692                 } else if (strcmp(*argv, "secondary") == 0 ||
 693                            strcmp(*argv, "temporary") == 0) {
 694                         filter.flags |= IFA_F_SECONDARY;
 695                         filter.flagmask |= IFA_F_SECONDARY;
 696                 } else if (strcmp(*argv, "primary") == 0) {
 697                         filter.flags &= ~IFA_F_SECONDARY;
 698                         filter.flagmask |= IFA_F_SECONDARY;
 699                 } else if (strcmp(*argv, "tentative") == 0) {
 700                         filter.flags |= IFA_F_TENTATIVE;
 701                         filter.flagmask |= IFA_F_TENTATIVE;
 702                 } else if (strcmp(*argv, "deprecated") == 0) {
 703                         filter.flags |= IFA_F_DEPRECATED;
 704                         filter.flagmask |= IFA_F_DEPRECATED;
 705                 } else if (strcmp(*argv, "home") == 0) {
 706                         filter.flags |= IFA_F_HOMEADDRESS;
 707                         filter.flagmask |= IFA_F_HOMEADDRESS;
 708                 } else if (strcmp(*argv, "nodad") == 0) {
 709                         filter.flags |= IFA_F_NODAD;
 710                         filter.flagmask |= IFA_F_NODAD;
 711                 } else if (strcmp(*argv, "dadfailed") == 0) {
 712                         filter.flags |= IFA_F_DADFAILED;
 713                         filter.flagmask |= IFA_F_DADFAILED;
 714                 } else if (strcmp(*argv, "label") == 0) {
 715                         NEXT_ARG();
 716                         filter.label = *argv;
 717                 } else {
 718                         if (strcmp(*argv, "dev") == 0) {
 719                                 NEXT_ARG();
 720                         }
 721                         if (matches(*argv, "help") == 0)
 722                                 usage();
 723                         if (filter_dev)
 724                                 duparg2("dev", *argv);
 725                         filter_dev = *argv;
 726                 }
 727                 argv++; argc--;
 728         }
 729
 730         if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
 731                 perror("Cannot send dump request");
 732                 exit(1);
 733         }
 734
 735         if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
 736                 fprintf(stderr, "Dump terminated\n");
 737                 exit(1);
 738         }
 739
 740         if (filter_dev) {
 741                 filter.ifindex = ll_name_to_index(filter_dev);
 742                 if (filter.ifindex <= 0) {
 743                         fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
 744                         return -1;
 745                 }
 746         }
 747
 748         if (flush) {
 749                 int round = 0;
 750                 char flushb[4096-512];
 751
 752                 filter.flushb = flushb;
 753                 filter.flushp = 0;
 754                 filter.flushe = sizeof(flushb);
 755
 756                 while (round < MAX_ROUNDS) {
 757                         const struct rtnl_dump_filter_arg a[3] = {
 758                                 {
 759                                         .filter = print_addrinfo_secondary,
 760                                         .arg1 = stdout,
 761                                         .junk = NULL,
 762                                         .arg2 = NULL
 763                                 },
 764                                 {
 765                                         .filter = print_addrinfo_primary,
 766                                         .arg1 = stdout,
 767                                         .junk = NULL,
 768                                         .arg2 = NULL
 769                                 },
 770                                 {
 771                                         .filter = NULL,
 772                                         .arg1 = NULL,
 773                                         .junk = NULL,
 774                                         .arg2 = NULL
 775                                 },
 776                         };
 777                         if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
 778                                 perror("Cannot send dump request");
 779                                 exit(1);
 780                         }
 781                         filter.flushed = 0;
 782                         if (rtnl_dump_filter_l(&rth, a) < 0) {
 783                                 fprintf(stderr, "Flush terminated\n");
 784                                 exit(1);
 785                         }
 786                         if (filter.flushed == 0) {
 787                                 if (show_stats) {
 788                                         if (round == 0)
 789                                                 printf("Nothing to flush.\n");
 790                                         else
 791                                                 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
 792                                 }
 793                                 fflush(stdout);
 794                                 return 0;
 795                         }
 796                         round++;
 797                         if (flush_update() < 0)
 798                                 return 1;
 799
 800                         if (show_stats) {
 801                                 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
 802                                 fflush(stdout);
 803                         }
 804                 }
 805                 fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", MAX_ROUNDS); fflush(stderr);
 806                 return 1;
 807         }
 808
 809         if (filter.family != AF_PACKET) {
 810                 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
 811                         perror("Cannot send dump request");
 812                         exit(1);
 813                 }
 814
 815                 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
 816                         fprintf(stderr, "Dump terminated\n");
 817                         exit(1);
 818                 }
 819         }
 820
 821
 822         if (filter.family && filter.family != AF_PACKET) {
 823                 struct nlmsg_list **lp;
 824                 lp=&linfo;
 825
 826                 if (filter.oneline)
 827                         no_link = 1;
 828
 829                 while ((l=*lp)!=NULL) {
 830                         int ok = 0;
 831                         struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
 832                         struct nlmsg_list *a;
 833
 834                         for (a=ainfo; a; a=a->next) {
 835                                 struct nlmsghdr *n = &a->h;
 836                                 struct ifaddrmsg *ifa = NLMSG_DATA(n);
 837
 838                                 if (ifa->ifa_index != ifi->ifi_index ||
 839                                     (filter.family && filter.family != ifa->ifa_family))
 840                                         continue;
 841                                 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
 842                                         continue;
 843                                 if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
 844                                         continue;
 845                                 if (filter.pfx.family || filter.label) {
 846                                         struct rtattr *tb[IFA_MAX+1];
 847                                         parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
 848                                         if (!tb[IFA_LOCAL])
 849                                                 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
 850
 851                                         if (filter.pfx.family && tb[IFA_LOCAL]) {
 852                                                 inet_prefix dst;
 853                                                 memset(&dst, 0, sizeof(dst));
 854                                                 dst.family = ifa->ifa_family;
 855                                                 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
 856                                                 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
 857                                                         continue;
 858                                         }
 859                                         if (filter.label) {
 860                                                 SPRINT_BUF(b1);
 861                                                 const char *label;
 862                                                 if (tb[IFA_LABEL])
 863                                                         label = RTA_DATA(tb[IFA_LABEL]);
 864                                                 else
 865                                                         label = ll_idx_n2a(ifa->ifa_index, b1);
 866                                                 if (fnmatch(filter.label, label, 0) != 0)
 867                                                         continue;
 868                                         }
 869                                 }
 870
 871                                 ok = 1;
 872                                 break;
 873                         }
 874                         if (!ok)
 875                                 *lp = l->next;
 876                         else
 877                                 lp = &l->next;
 878                 }
 879         }
 880
 881         for (l=linfo; l; l = n) {
 882                 n = l->next;
 883                 if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
 884                         struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
 885                         if (filter.family != AF_PACKET)
 886                                 print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
 887                 }
 888                 fflush(stdout);
 889                 free(l);
 890         }
 891
 892         return 0;
 893 }
 894
 895 int ipaddr_list_link(int argc, char **argv)
 896 {
 897         preferred_family = AF_PACKET;
 898         do_link = 1;
 899         return ipaddr_list_or_flush(argc, argv, 0);
 900 }
 901
 902 void ipaddr_reset_filter(int oneline)
 903 {
 904         memset(&filter, 0, sizeof(filter));
 905         filter.oneline = oneline;
 906 }
 907
 908 static int default_scope(inet_prefix *lcl)
 909 {
 910         if (lcl->family == AF_INET) {
 911                 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
 912                         return RT_SCOPE_HOST;
 913         }
 914         return 0;
 915 }
 916
 917 static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
 918 {
 919         struct {
 920                 struct nlmsghdr         n;
 921                 struct ifaddrmsg        ifa;
 922                 char                    buf[256];
 923         } req;
 924         char  *d = NULL;
 925         char  *l = NULL;
 926         char  *lcl_arg = NULL;
 927         char  *valid_lftp = NULL;
 928         char  *preferred_lftp = NULL;
 929         inet_prefix lcl;
 930         inet_prefix peer;
 931         int local_len = 0;
 932         int peer_len = 0;
 933         int brd_len = 0;
 934         int any_len = 0;
 935         int scoped = 0;
 936         __u32 preferred_lft = INFINITY_LIFE_TIME;
 937         __u32 valid_lft = INFINITY_LIFE_TIME;
 938         struct ifa_cacheinfo cinfo;
 939
 940         memset(&req, 0, sizeof(req));
 941
 942         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
 943         req.n.nlmsg_flags = NLM_F_REQUEST | flags;
 944         req.n.nlmsg_type = cmd;
 945         req.ifa.ifa_family = preferred_family;
 946
 947         while (argc > 0) {
 948                 if (strcmp(*argv, "peer") == 0 ||
 949                     strcmp(*argv, "remote") == 0) {
 950                         NEXT_ARG();
 951
 952                         if (peer_len)
 953                                 duparg("peer", *argv);
 954                         get_prefix(&peer, *argv, req.ifa.ifa_family);
 955                         peer_len = peer.bytelen;
 956                         if (req.ifa.ifa_family == AF_UNSPEC)
 957                                 req.ifa.ifa_family = peer.family;
 958                         addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
 959                         req.ifa.ifa_prefixlen = peer.bitlen;
 960                 } else if (matches(*argv, "broadcast") == 0 ||
 961                            strcmp(*argv, "brd") == 0) {
 962                         inet_prefix addr;
 963                         NEXT_ARG();
 964                         if (brd_len)
 965                                 duparg("broadcast", *argv);
 966                         if (strcmp(*argv, "+") == 0)
 967                                 brd_len = -1;
 968                         else if (strcmp(*argv, "-") == 0)
 969                                 brd_len = -2;
 970                         else {
 971                                 get_addr(&addr, *argv, req.ifa.ifa_family);
 972                                 if (req.ifa.ifa_family == AF_UNSPEC)
 973                                         req.ifa.ifa_family = addr.family;
 974                                 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
 975                                 brd_len = addr.bytelen;
 976                         }
 977                 } else if (strcmp(*argv, "anycast") == 0) {
 978                         inet_prefix addr;
 979                         NEXT_ARG();
 980                         if (any_len)
 981                                 duparg("anycast", *argv);
 982                         get_addr(&addr, *argv, req.ifa.ifa_family);
 983                         if (req.ifa.ifa_family == AF_UNSPEC)
 984                                 req.ifa.ifa_family = addr.family;
 985                         addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
 986                         any_len = addr.bytelen;
 987                 } else if (strcmp(*argv, "scope") == 0) {
 988                         unsigned scope = 0;
 989                         NEXT_ARG();
 990                         if (rtnl_rtscope_a2n(&scope, *argv))
 991                                 invarg(*argv, "invalid scope value.");
 992                         req.ifa.ifa_scope = scope;
 993                         scoped = 1;
 994                 } else if (strcmp(*argv, "dev") == 0) {
 995                         NEXT_ARG();
 996                         d = *argv;
 997                 } else if (strcmp(*argv, "label") == 0) {
 998                         NEXT_ARG();
 999                         l = *argv;
1000                         addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
1001                 } else if (matches(*argv, "valid_lft") == 0) {
1002                         if (valid_lftp)
1003                                 duparg("valid_lft", *argv);
1004                         NEXT_ARG();
1005                         valid_lftp = *argv;
1006                         if (set_lifetime(&valid_lft, *argv))
1007                                 invarg("valid_lft value", *argv);
1008                 } else if (matches(*argv, "preferred_lft") == 0) {
1009                         if (preferred_lftp)
1010                                 duparg("preferred_lft", *argv);
1011                         NEXT_ARG();
1012                         preferred_lftp = *argv;
1013                         if (set_lifetime(&preferred_lft, *argv))
1014                                 invarg("preferred_lft value", *argv);
1015                 } else if (strcmp(*argv, "home") == 0) {
1016                         req.ifa.ifa_flags |= IFA_F_HOMEADDRESS;
1017                 } else if (strcmp(*argv, "nodad") == 0) {
1018                         req.ifa.ifa_flags |= IFA_F_NODAD;
1019                 } else {
1020                         if (strcmp(*argv, "local") == 0) {
1021                                 NEXT_ARG();
1022                         }
1023                         if (matches(*argv, "help") == 0)
1024                                 usage();
1025                         if (local_len)
1026                                 duparg2("local", *argv);
1027                         lcl_arg = *argv;
1028                         get_prefix(&lcl, *argv, req.ifa.ifa_family);
1029                         if (req.ifa.ifa_family == AF_UNSPEC)
1030                                 req.ifa.ifa_family = lcl.family;
1031                         addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
1032                         local_len = lcl.bytelen;
1033                 }
1034                 argc--; argv++;
1035         }
1036         if (d == NULL) {
1037                 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
1038                 return -1;
1039         }
1040         if (l && matches(d, l) != 0) {
1041                 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
1042                 exit(1);
1043         }
1044
1045         if (peer_len == 0 && local_len) {
1046                 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
1047                         fprintf(stderr,
1048                             "Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
1049                             "         Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
1050                             "         This special behaviour is likely to disappear in further releases,\n" \
1051                             "         fix your scripts!\n", lcl_arg, local_len*8);
1052                 } else {
1053                         peer = lcl;
1054                         addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
1055                 }
1056         }
1057         if (req.ifa.ifa_prefixlen == 0)
1058                 req.ifa.ifa_prefixlen = lcl.bitlen;
1059
1060         if (brd_len < 0 && cmd != RTM_DELADDR) {
1061                 inet_prefix brd;
1062                 int i;
1063                 if (req.ifa.ifa_family != AF_INET) {
1064                         fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
1065                         return -1;
1066                 }
1067                 brd = peer;
1068                 if (brd.bitlen <= 30) {
1069                         for (i=31; i>=brd.bitlen; i--) {
1070                                 if (brd_len == -1)
1071                                         brd.data[0] |= htonl(1<<(31-i));
1072                                 else
1073                                         brd.data[0] &= ~htonl(1<<(31-i));
1074                         }
1075                         addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
1076                         brd_len = brd.bytelen;
1077                 }
1078         }
1079         if (!scoped && cmd != RTM_DELADDR)
1080                 req.ifa.ifa_scope = default_scope(&lcl);
1081
1082         ll_init_map(&rth);
1083
1084         if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
1085                 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1086                 return -1;
1087         }
1088
1089         if (valid_lftp || preferred_lftp) {
1090                 if (!valid_lft) {
1091                         fprintf(stderr, "valid_lft is zero\n");
1092                         return -1;
1093                 }
1094                 if (valid_lft < preferred_lft) {
1095                         fprintf(stderr, "preferred_lft is greater than valid_lft\n");
1096                         return -1;
1097                 }
1098
1099                 memset(&cinfo, 0, sizeof(cinfo));
1100                 cinfo.ifa_prefered = preferred_lft;
1101                 cinfo.ifa_valid = valid_lft;
1102                 addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
1103                           sizeof(cinfo));
1104         }
1105
1106         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
1107                 exit(2);
1108
1109         return 0;
1110 }
1111
1112 int do_ipaddr(int argc, char **argv)
1113 {
1114         if (argc < 1)
1115                 return ipaddr_list_or_flush(0, NULL, 0);
1116         if (matches(*argv, "add") == 0)
1117                 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
1118         if (matches(*argv, "change") == 0 ||
1119                 strcmp(*argv, "chg") == 0)
1120                 return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
1121         if (matches(*argv, "replace") == 0)
1122                 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
1123         if (matches(*argv, "delete") == 0)
1124                 return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
1125         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1126             || matches(*argv, "lst") == 0)
1127                 return ipaddr_list_or_flush(argc-1, argv+1, 0);
1128         if (matches(*argv, "flush") == 0)
1129                 return ipaddr_list_or_flush(argc-1, argv+1, 1);
1130         if (matches(*argv, "help") == 0)
1131                 usage();
1132         fprintf(stderr, "Command \"%s\" is unknown, try \"ip addr help\".\n", *argv);
1133         exit(-1);
1134 }
1135