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 static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
 191 {
 192         struct ifla_vf_mac *vf_mac;
 193         struct ifla_vf_vlan *vf_vlan;
 194         struct ifla_vf_tx_rate *vf_tx_rate;
 195         struct rtattr *vf[IFLA_VF_MAX+1];
 196         SPRINT_BUF(b1);
 197
 198         if (vfinfo->rta_type != IFLA_VF_INFO) {
 199                 fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
 200                 return;
 201         }
 202
 203         parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
 204
 205         vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
 206         vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
 207         vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
 208
 209         fprintf(fp, "\n    vf %d MAC %s", vf_mac->vf,
 210                 ll_addr_n2a((unsigned char *)&vf_mac->mac,
 211                 ETH_ALEN, 0, b1, sizeof(b1)));
 212         if (vf_vlan->vlan)
 213                 fprintf(fp, ", vlan %d", vf_vlan->vlan);
 214         if (vf_vlan->qos)
 215                 fprintf(fp, ", qos %d", vf_vlan->qos);
 216         if (vf_tx_rate->rate)
 217                 fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
 218 }
 219
 220 int print_linkinfo(const struct sockaddr_nl *who,
 221                    struct nlmsghdr *n, void *arg)
 222 {
 223         FILE *fp = (FILE*)arg;
 224         struct ifinfomsg *ifi = NLMSG_DATA(n);
 225         struct rtattr * tb[IFLA_MAX+1];
 226         int len = n->nlmsg_len;
 227         unsigned m_flag = 0;
 228
 229         if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
 230                 return 0;
 231
 232         len -= NLMSG_LENGTH(sizeof(*ifi));
 233         if (len < 0)
 234                 return -1;
 235
 236         if (filter.ifindex && ifi->ifi_index != filter.ifindex)
 237                 return 0;
 238         if (filter.up && !(ifi->ifi_flags&IFF_UP))
 239                 return 0;
 240
 241         parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
 242         if (tb[IFLA_IFNAME] == NULL) {
 243                 fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
 244         }
 245         if (filter.label &&
 246             (!filter.family || filter.family == AF_PACKET) &&
 247             fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
 248                 return 0;
 249
 250         if (n->nlmsg_type == RTM_DELLINK)
 251                 fprintf(fp, "Deleted ");
 252
 253         fprintf(fp, "%d: %s", ifi->ifi_index,
 254                 tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
 255
 256         if (tb[IFLA_LINK]) {
 257                 SPRINT_BUF(b1);
 258                 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
 259                 if (iflink == 0)
 260                         fprintf(fp, "@NONE: ");
 261                 else {
 262                         fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
 263                         m_flag = ll_index_to_flags(iflink);
 264                         m_flag = !(m_flag & IFF_UP);
 265                 }
 266         } else {
 267                 fprintf(fp, ": ");
 268         }
 269         print_link_flags(fp, ifi->ifi_flags, m_flag);
 270
 271         if (tb[IFLA_MTU])
 272                 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
 273         if (tb[IFLA_QDISC])
 274                 fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
 275 #ifdef IFLA_MASTER
 276         if (tb[IFLA_MASTER]) {
 277                 SPRINT_BUF(b1);
 278                 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
 279         }
 280 #endif
 281         if (tb[IFLA_OPERSTATE])
 282                 print_operstate(fp, *(__u8 *)RTA_DATA(tb[IFLA_OPERSTATE]));
 283
 284         if (filter.showqueue)
 285                 print_queuelen(fp, (char*)RTA_DATA(tb[IFLA_IFNAME]));
 286
 287         if (!filter.family || filter.family == AF_PACKET) {
 288                 SPRINT_BUF(b1);
 289                 fprintf(fp, "%s", _SL_);
 290                 fprintf(fp, "    link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
 291
 292                 if (tb[IFLA_ADDRESS]) {
 293                         fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
 294                                                       RTA_PAYLOAD(tb[IFLA_ADDRESS]),
 295                                                       ifi->ifi_type,
 296                                                       b1, sizeof(b1)));
 297                 }
 298                 if (tb[IFLA_BROADCAST]) {
 299                         if (ifi->ifi_flags&IFF_POINTOPOINT)
 300                                 fprintf(fp, " peer ");
 301                         else
 302                                 fprintf(fp, " brd ");
 303                         fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
 304                                                       RTA_PAYLOAD(tb[IFLA_BROADCAST]),
 305                                                       ifi->ifi_type,
 306                                                       b1, sizeof(b1)));
 307                 }
 308         }
 309
 310         if (do_link && tb[IFLA_LINKINFO] && show_details)
 311                 print_linktype(fp, tb[IFLA_LINKINFO]);
 312
 313         if (do_link && tb[IFLA_IFALIAS])
 314                 fprintf(fp,"\n    alias %s",
 315                         (const char *) RTA_DATA(tb[IFLA_IFALIAS]));
 316
 317         if (do_link && tb[IFLA_STATS64] && show_stats) {
 318                 struct rtnl_link_stats64 slocal;
 319                 struct rtnl_link_stats64 *s = RTA_DATA(tb[IFLA_STATS64]);
 320                 if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
 321                         memcpy(&slocal, s, sizeof(slocal));
 322                         s = &slocal;
 323                 }
 324                 fprintf(fp, "%s", _SL_);
 325                 fprintf(fp, "    RX: bytes  packets  errors  dropped overrun mcast   %s%s",
 326                         s->rx_compressed ? "compressed" : "", _SL_);
 327                 fprintf(fp, "    %-10llu %-8llu %-7llu %-7llu %-7llu %-7llu",
 328                         (unsigned long long)s->rx_bytes,
 329                         (unsigned long long)s->rx_packets,
 330                         (unsigned long long)s->rx_errors,
 331                         (unsigned long long)s->rx_dropped,
 332                         (unsigned long long)s->rx_over_errors,
 333                         (unsigned long long)s->multicast);
 334                 if (s->rx_compressed)
 335                         fprintf(fp, " %-7llu",
 336                                 (unsigned long long)s->rx_compressed);
 337                 if (show_stats > 1) {
 338                         fprintf(fp, "%s", _SL_);
 339                         fprintf(fp, "    RX errors: length  crc     frame   fifo    missed%s", _SL_);
 340                         fprintf(fp, "               %-7llu  %-7llu %-7llu %-7llu %-7llu",
 341                                 (unsigned long long)s->rx_length_errors,
 342                                 (unsigned long long)s->rx_crc_errors,
 343                                 (unsigned long long)s->rx_frame_errors,
 344                                 (unsigned long long)s->rx_fifo_errors,
 345                                 (unsigned long long)s->rx_missed_errors);
 346                 }
 347                 fprintf(fp, "%s", _SL_);
 348                 fprintf(fp, "    TX: bytes  packets  errors  dropped carrier collsns %s%s",
 349                         s->tx_compressed ? "compressed" : "", _SL_);
 350                 fprintf(fp, "    %-10llu %-8llu %-7llu %-7llu %-7llu %-7llu",
 351                         (unsigned long long)s->tx_bytes,
 352                         (unsigned long long)s->tx_packets,
 353                         (unsigned long long)s->tx_errors,
 354                         (unsigned long long)s->tx_dropped,
 355                         (unsigned long long)s->tx_carrier_errors,
 356                         (unsigned long long)s->collisions);
 357                 if (s->tx_compressed)
 358                         fprintf(fp, " %-7llu",
 359                                 (unsigned long long)s->tx_compressed);
 360                 if (show_stats > 1) {
 361                         fprintf(fp, "%s", _SL_);
 362                         fprintf(fp, "    TX errors: aborted fifo    window  heartbeat%s", _SL_);
 363                         fprintf(fp, "               %-7llu  %-7llu %-7llu %-7llu",
 364                                 (unsigned long long)s->tx_aborted_errors,
 365                                 (unsigned long long)s->tx_fifo_errors,
 366                                 (unsigned long long)s->tx_window_errors,
 367                                 (unsigned long long)s->tx_heartbeat_errors);
 368                 }
 369         }
 370         if (do_link && !tb[IFLA_STATS64] && tb[IFLA_STATS] && show_stats) {
 371                 struct rtnl_link_stats slocal;
 372                 struct rtnl_link_stats *s = RTA_DATA(tb[IFLA_STATS]);
 373                 if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
 374                         memcpy(&slocal, s, sizeof(slocal));
 375                         s = &slocal;
 376                 }
 377                 fprintf(fp, "%s", _SL_);
 378                 fprintf(fp, "    RX: bytes  packets  errors  dropped overrun mcast   %s%s",
 379                         s->rx_compressed ? "compressed" : "", _SL_);
 380                 fprintf(fp, "    %-10u %-8u %-7u %-7u %-7u %-7u",
 381                         s->rx_bytes, s->rx_packets, s->rx_errors,
 382                         s->rx_dropped, s->rx_over_errors,
 383                         s->multicast
 384                         );
 385                 if (s->rx_compressed)
 386                         fprintf(fp, " %-7u", s->rx_compressed);
 387                 if (show_stats > 1) {
 388                         fprintf(fp, "%s", _SL_);
 389                         fprintf(fp, "    RX errors: length  crc     frame   fifo    missed%s", _SL_);
 390                         fprintf(fp, "               %-7u  %-7u %-7u %-7u %-7u",
 391                                 s->rx_length_errors,
 392                                 s->rx_crc_errors,
 393                                 s->rx_frame_errors,
 394                                 s->rx_fifo_errors,
 395                                 s->rx_missed_errors
 396                                 );
 397                 }
 398                 fprintf(fp, "%s", _SL_);
 399                 fprintf(fp, "    TX: bytes  packets  errors  dropped carrier collsns %s%s",
 400                         s->tx_compressed ? "compressed" : "", _SL_);
 401                 fprintf(fp, "    %-10u %-8u %-7u %-7u %-7u %-7u",
 402                         s->tx_bytes, s->tx_packets, s->tx_errors,
 403                         s->tx_dropped, s->tx_carrier_errors, s->collisions);
 404                 if (s->tx_compressed)
 405                         fprintf(fp, " %-7u", s->tx_compressed);
 406                 if (show_stats > 1) {
 407                         fprintf(fp, "%s", _SL_);
 408                         fprintf(fp, "    TX errors: aborted fifo    window  heartbeat%s", _SL_);
 409                         fprintf(fp, "               %-7u  %-7u %-7u %-7u",
 410                                 s->tx_aborted_errors,
 411                                 s->tx_fifo_errors,
 412                                 s->tx_window_errors,
 413                                 s->tx_heartbeat_errors
 414                                 );
 415                 }
 416         }
 417         if (do_link && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
 418                 struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
 419                 int rem = RTA_PAYLOAD(vflist);
 420                 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
 421                         print_vfinfo(fp, i);
 422         }
 423
 424         fprintf(fp, "\n");
 425         fflush(fp);
 426         return 0;
 427 }
 428
 429 static int flush_update(void)
 430 {
 431         if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
 432                 perror("Failed to send flush request");
 433                 return -1;
 434         }
 435         filter.flushp = 0;
 436         return 0;
 437 }
 438
 439 static int set_lifetime(unsigned int *lifetime, char *argv)
 440 {
 441         if (strcmp(argv, "forever") == 0)
 442                 *lifetime = INFINITY_LIFE_TIME;
 443         else if (get_u32(lifetime, argv, 0))
 444                 return -1;
 445
 446         return 0;
 447 }
 448
 449 int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
 450                    void *arg)
 451 {
 452         FILE *fp = (FILE*)arg;
 453         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 454         int len = n->nlmsg_len;
 455         int deprecated = 0;
 456         struct rtattr * rta_tb[IFA_MAX+1];
 457         char abuf[256];
 458         SPRINT_BUF(b1);
 459
 460         if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
 461                 return 0;
 462         len -= NLMSG_LENGTH(sizeof(*ifa));
 463         if (len < 0) {
 464                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 465                 return -1;
 466         }
 467
 468         if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
 469                 return 0;
 470
 471         parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
 472
 473         if (!rta_tb[IFA_LOCAL])
 474                 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
 475         if (!rta_tb[IFA_ADDRESS])
 476                 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
 477
 478         if (filter.ifindex && filter.ifindex != ifa->ifa_index)
 479                 return 0;
 480         if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
 481                 return 0;
 482         if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
 483                 return 0;
 484         if (filter.label) {
 485                 SPRINT_BUF(b1);
 486                 const char *label;
 487                 if (rta_tb[IFA_LABEL])
 488                         label = RTA_DATA(rta_tb[IFA_LABEL]);
 489                 else
 490                         label = ll_idx_n2a(ifa->ifa_index, b1);
 491                 if (fnmatch(filter.label, label, 0) != 0)
 492                         return 0;
 493         }
 494         if (filter.pfx.family) {
 495                 if (rta_tb[IFA_LOCAL]) {
 496                         inet_prefix dst;
 497                         memset(&dst, 0, sizeof(dst));
 498                         dst.family = ifa->ifa_family;
 499                         memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
 500                         if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
 501                                 return 0;
 502                 }
 503         }
 504
 505         if (filter.family && filter.family != ifa->ifa_family)
 506                 return 0;
 507
 508         if (filter.flushb) {
 509                 struct nlmsghdr *fn;
 510                 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
 511                         if (flush_update())
 512                                 return -1;
 513                 }
 514                 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
 515                 memcpy(fn, n, n->nlmsg_len);
 516                 fn->nlmsg_type = RTM_DELADDR;
 517                 fn->nlmsg_flags = NLM_F_REQUEST;
 518                 fn->nlmsg_seq = ++rth.seq;
 519                 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
 520                 filter.flushed++;
 521                 if (show_stats < 2)
 522                         return 0;
 523         }
 524
 525         if (n->nlmsg_type == RTM_DELADDR)
 526                 fprintf(fp, "Deleted ");
 527
 528         if (filter.oneline || filter.flushb)
 529                 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
 530         if (ifa->ifa_family == AF_INET)
 531                 fprintf(fp, "    inet ");
 532         else if (ifa->ifa_family == AF_INET6)
 533                 fprintf(fp, "    inet6 ");
 534         else if (ifa->ifa_family == AF_DECnet)
 535                 fprintf(fp, "    dnet ");
 536         else if (ifa->ifa_family == AF_IPX)
 537                 fprintf(fp, "     ipx ");
 538         else
 539                 fprintf(fp, "    family %d ", ifa->ifa_family);
 540
 541         if (rta_tb[IFA_LOCAL]) {
 542                 fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
 543                                               RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
 544                                               RTA_DATA(rta_tb[IFA_LOCAL]),
 545                                               abuf, sizeof(abuf)));
 546
 547                 if (rta_tb[IFA_ADDRESS] == NULL ||
 548                     memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
 549                         fprintf(fp, "/%d ", ifa->ifa_prefixlen);
 550                 } else {
 551                         fprintf(fp, " peer %s/%d ",
 552                                 rt_addr_n2a(ifa->ifa_family,
 553                                             RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
 554                                             RTA_DATA(rta_tb[IFA_ADDRESS]),
 555                                             abuf, sizeof(abuf)),
 556                                 ifa->ifa_prefixlen);
 557                 }
 558         }
 559
 560         if (rta_tb[IFA_BROADCAST]) {
 561                 fprintf(fp, "brd %s ",
 562                         rt_addr_n2a(ifa->ifa_family,
 563                                     RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
 564                                     RTA_DATA(rta_tb[IFA_BROADCAST]),
 565                                     abuf, sizeof(abuf)));
 566         }
 567         if (rta_tb[IFA_ANYCAST]) {
 568                 fprintf(fp, "any %s ",
 569                         rt_addr_n2a(ifa->ifa_family,
 570                                     RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
 571                                     RTA_DATA(rta_tb[IFA_ANYCAST]),
 572                                     abuf, sizeof(abuf)));
 573         }
 574         fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
 575         if (ifa->ifa_flags&IFA_F_SECONDARY) {
 576                 ifa->ifa_flags &= ~IFA_F_SECONDARY;
 577                 if (ifa->ifa_family == AF_INET6)
 578                         fprintf(fp, "temporary ");
 579                 else
 580                         fprintf(fp, "secondary ");
 581         }
 582         if (ifa->ifa_flags&IFA_F_TENTATIVE) {
 583                 ifa->ifa_flags &= ~IFA_F_TENTATIVE;
 584                 fprintf(fp, "tentative ");
 585         }
 586         if (ifa->ifa_flags&IFA_F_DEPRECATED) {
 587                 ifa->ifa_flags &= ~IFA_F_DEPRECATED;
 588                 deprecated = 1;
 589                 fprintf(fp, "deprecated ");
 590         }
 591         if (ifa->ifa_flags&IFA_F_HOMEADDRESS) {
 592                 ifa->ifa_flags &= ~IFA_F_HOMEADDRESS;
 593                 fprintf(fp, "home ");
 594         }
 595         if (ifa->ifa_flags&IFA_F_NODAD) {
 596                 ifa->ifa_flags &= ~IFA_F_NODAD;
 597                 fprintf(fp, "nodad ");
 598         }
 599         if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
 600                 fprintf(fp, "dynamic ");
 601         } else
 602                 ifa->ifa_flags &= ~IFA_F_PERMANENT;
 603         if (ifa->ifa_flags&IFA_F_DADFAILED) {
 604                 ifa->ifa_flags &= ~IFA_F_DADFAILED;
 605                 fprintf(fp, "dadfailed ");
 606         }
 607         if (ifa->ifa_flags)
 608                 fprintf(fp, "flags %02x ", ifa->ifa_flags);
 609         if (rta_tb[IFA_LABEL])
 610                 fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
 611         if (rta_tb[IFA_CACHEINFO]) {
 612                 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
 613                 char buf[128];
 614                 fprintf(fp, "%s", _SL_);
 615                 if (ci->ifa_valid == INFINITY_LIFE_TIME)
 616                         sprintf(buf, "valid_lft forever");
 617                 else
 618                         sprintf(buf, "valid_lft %usec", ci->ifa_valid);
 619                 if (ci->ifa_prefered == INFINITY_LIFE_TIME)
 620                         sprintf(buf+strlen(buf), " preferred_lft forever");
 621                 else {
 622                         if (deprecated)
 623                                 sprintf(buf+strlen(buf), " preferred_lft %dsec",
 624                                         ci->ifa_prefered);
 625                         else
 626                                 sprintf(buf+strlen(buf), " preferred_lft %usec",
 627                                         ci->ifa_prefered);
 628                 }
 629                 fprintf(fp, "       %s", buf);
 630         }
 631         fprintf(fp, "\n");
 632         fflush(fp);
 633         return 0;
 634 }
 635
 636 int print_addrinfo_primary(const struct sockaddr_nl *who, struct nlmsghdr *n,
 637                            void *arg)
 638 {
 639         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 640
 641         if (!ifa->ifa_flags & IFA_F_SECONDARY)
 642                 return 0;
 643
 644         return print_addrinfo(who, n, arg);
 645 }
 646
 647 int print_addrinfo_secondary(const struct sockaddr_nl *who, struct nlmsghdr *n,
 648                              void *arg)
 649 {
 650         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 651
 652         if (ifa->ifa_flags & IFA_F_SECONDARY)
 653                 return 0;
 654
 655         return print_addrinfo(who, n, arg);
 656 }
 657
 658 struct nlmsg_list
 659 {
 660         struct nlmsg_list *next;
 661         struct nlmsghdr   h;
 662 };
 663
 664 static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
 665 {
 666         for ( ;ainfo ;  ainfo = ainfo->next) {
 667                 struct nlmsghdr *n = &ainfo->h;
 668                 struct ifaddrmsg *ifa = NLMSG_DATA(n);
 669
 670                 if (n->nlmsg_type != RTM_NEWADDR)
 671                         continue;
 672
 673                 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
 674                         return -1;
 675
 676                 if (ifa->ifa_index != ifindex ||
 677                     (filter.family && filter.family != ifa->ifa_family))
 678                         continue;
 679
 680                 print_addrinfo(NULL, n, fp);
 681         }
 682         return 0;
 683 }
 684
 685
 686 static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
 687                        void *arg)
 688 {
 689         struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
 690         struct nlmsg_list *h;
 691         struct nlmsg_list **lp;
 692
 693         h = malloc(n->nlmsg_len+sizeof(void*));
 694         if (h == NULL)
 695                 return -1;
 696
 697         memcpy(&h->h, n, n->nlmsg_len);
 698         h->next = NULL;
 699
 700         for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
 701         *lp = h;
 702
 703         ll_remember_index(who, n, NULL);
 704         return 0;
 705 }
 706
 707 static int ipaddr_list_or_flush(int argc, char **argv, int flush)
 708 {
 709         struct nlmsg_list *linfo = NULL;
 710         struct nlmsg_list *ainfo = NULL;
 711         struct nlmsg_list *l, *n;
 712         char *filter_dev = NULL;
 713         int no_link = 0;
 714
 715         ipaddr_reset_filter(oneline);
 716         filter.showqueue = 1;
 717
 718         if (filter.family == AF_UNSPEC)
 719                 filter.family = preferred_family;
 720
 721         if (flush) {
 722                 if (argc <= 0) {
 723                         fprintf(stderr, "Flush requires arguments.\n");
 724                         return -1;
 725                 }
 726                 if (filter.family == AF_PACKET) {
 727                         fprintf(stderr, "Cannot flush link addresses.\n");
 728                         return -1;
 729                 }
 730         }
 731
 732         while (argc > 0) {
 733                 if (strcmp(*argv, "to") == 0) {
 734                         NEXT_ARG();
 735                         get_prefix(&filter.pfx, *argv, filter.family);
 736                         if (filter.family == AF_UNSPEC)
 737                                 filter.family = filter.pfx.family;
 738                 } else if (strcmp(*argv, "scope") == 0) {
 739                         unsigned scope = 0;
 740                         NEXT_ARG();
 741                         filter.scopemask = -1;
 742                         if (rtnl_rtscope_a2n(&scope, *argv)) {
 743                                 if (strcmp(*argv, "all") != 0)
 744                                         invarg("invalid \"scope\"\n", *argv);
 745                                 scope = RT_SCOPE_NOWHERE;
 746                                 filter.scopemask = 0;
 747                         }
 748                         filter.scope = scope;
 749                 } else if (strcmp(*argv, "up") == 0) {
 750                         filter.up = 1;
 751                 } else if (strcmp(*argv, "dynamic") == 0) {
 752                         filter.flags &= ~IFA_F_PERMANENT;
 753                         filter.flagmask |= IFA_F_PERMANENT;
 754                 } else if (strcmp(*argv, "permanent") == 0) {
 755                         filter.flags |= IFA_F_PERMANENT;
 756                         filter.flagmask |= IFA_F_PERMANENT;
 757                 } else if (strcmp(*argv, "secondary") == 0 ||
 758                            strcmp(*argv, "temporary") == 0) {
 759                         filter.flags |= IFA_F_SECONDARY;
 760                         filter.flagmask |= IFA_F_SECONDARY;
 761                 } else if (strcmp(*argv, "primary") == 0) {
 762                         filter.flags &= ~IFA_F_SECONDARY;
 763                         filter.flagmask |= IFA_F_SECONDARY;
 764                 } else if (strcmp(*argv, "tentative") == 0) {
 765                         filter.flags |= IFA_F_TENTATIVE;
 766                         filter.flagmask |= IFA_F_TENTATIVE;
 767                 } else if (strcmp(*argv, "deprecated") == 0) {
 768                         filter.flags |= IFA_F_DEPRECATED;
 769                         filter.flagmask |= IFA_F_DEPRECATED;
 770                 } else if (strcmp(*argv, "home") == 0) {
 771                         filter.flags |= IFA_F_HOMEADDRESS;
 772                         filter.flagmask |= IFA_F_HOMEADDRESS;
 773                 } else if (strcmp(*argv, "nodad") == 0) {
 774                         filter.flags |= IFA_F_NODAD;
 775                         filter.flagmask |= IFA_F_NODAD;
 776                 } else if (strcmp(*argv, "dadfailed") == 0) {
 777                         filter.flags |= IFA_F_DADFAILED;
 778                         filter.flagmask |= IFA_F_DADFAILED;
 779                 } else if (strcmp(*argv, "label") == 0) {
 780                         NEXT_ARG();
 781                         filter.label = *argv;
 782                 } else {
 783                         if (strcmp(*argv, "dev") == 0) {
 784                                 NEXT_ARG();
 785                         }
 786                         if (matches(*argv, "help") == 0)
 787                                 usage();
 788                         if (filter_dev)
 789                                 duparg2("dev", *argv);
 790                         filter_dev = *argv;
 791                 }
 792                 argv++; argc--;
 793         }
 794
 795         if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
 796                 perror("Cannot send dump request");
 797                 exit(1);
 798         }
 799
 800         if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
 801                 fprintf(stderr, "Dump terminated\n");
 802                 exit(1);
 803         }
 804
 805         if (filter_dev) {
 806                 filter.ifindex = ll_name_to_index(filter_dev);
 807                 if (filter.ifindex <= 0) {
 808                         fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
 809                         return -1;
 810                 }
 811         }
 812
 813         if (flush) {
 814                 int round = 0;
 815                 char flushb[4096-512];
 816
 817                 filter.flushb = flushb;
 818                 filter.flushp = 0;
 819                 filter.flushe = sizeof(flushb);
 820
 821                 while (round < MAX_ROUNDS) {
 822                         const struct rtnl_dump_filter_arg a[3] = {
 823                                 {
 824                                         .filter = print_addrinfo_secondary,
 825                                         .arg1 = stdout,
 826                                         .junk = NULL,
 827                                         .arg2 = NULL
 828                                 },
 829                                 {
 830                                         .filter = print_addrinfo_primary,
 831                                         .arg1 = stdout,
 832                                         .junk = NULL,
 833                                         .arg2 = NULL
 834                                 },
 835                                 {
 836                                         .filter = NULL,
 837                                         .arg1 = NULL,
 838                                         .junk = NULL,
 839                                         .arg2 = NULL
 840                                 },
 841                         };
 842                         if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
 843                                 perror("Cannot send dump request");
 844                                 exit(1);
 845                         }
 846                         filter.flushed = 0;
 847                         if (rtnl_dump_filter_l(&rth, a) < 0) {
 848                                 fprintf(stderr, "Flush terminated\n");
 849                                 exit(1);
 850                         }
 851                         if (filter.flushed == 0) {
 852                                 if (show_stats) {
 853                                         if (round == 0)
 854                                                 printf("Nothing to flush.\n");
 855                                         else
 856                                                 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
 857                                 }
 858                                 fflush(stdout);
 859                                 return 0;
 860                         }
 861                         round++;
 862                         if (flush_update() < 0)
 863                                 return 1;
 864
 865                         if (show_stats) {
 866                                 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
 867                                 fflush(stdout);
 868                         }
 869                 }
 870                 fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", MAX_ROUNDS); fflush(stderr);
 871                 return 1;
 872         }
 873
 874         if (filter.family != AF_PACKET) {
 875                 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
 876                         perror("Cannot send dump request");
 877                         exit(1);
 878                 }
 879
 880                 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
 881                         fprintf(stderr, "Dump terminated\n");
 882                         exit(1);
 883                 }
 884         }
 885
 886
 887         if (filter.family && filter.family != AF_PACKET) {
 888                 struct nlmsg_list **lp;
 889                 lp=&linfo;
 890
 891                 if (filter.oneline)
 892                         no_link = 1;
 893
 894                 while ((l=*lp)!=NULL) {
 895                         int ok = 0;
 896                         struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
 897                         struct nlmsg_list *a;
 898
 899                         for (a=ainfo; a; a=a->next) {
 900                                 struct nlmsghdr *n = &a->h;
 901                                 struct ifaddrmsg *ifa = NLMSG_DATA(n);
 902
 903                                 if (ifa->ifa_index != ifi->ifi_index ||
 904                                     (filter.family && filter.family != ifa->ifa_family))
 905                                         continue;
 906                                 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
 907                                         continue;
 908                                 if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
 909                                         continue;
 910                                 if (filter.pfx.family || filter.label) {
 911                                         struct rtattr *tb[IFA_MAX+1];
 912                                         parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
 913                                         if (!tb[IFA_LOCAL])
 914                                                 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
 915
 916                                         if (filter.pfx.family && tb[IFA_LOCAL]) {
 917                                                 inet_prefix dst;
 918                                                 memset(&dst, 0, sizeof(dst));
 919                                                 dst.family = ifa->ifa_family;
 920                                                 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
 921                                                 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
 922                                                         continue;
 923                                         }
 924                                         if (filter.label) {
 925                                                 SPRINT_BUF(b1);
 926                                                 const char *label;
 927                                                 if (tb[IFA_LABEL])
 928                                                         label = RTA_DATA(tb[IFA_LABEL]);
 929                                                 else
 930                                                         label = ll_idx_n2a(ifa->ifa_index, b1);
 931                                                 if (fnmatch(filter.label, label, 0) != 0)
 932                                                         continue;
 933                                         }
 934                                 }
 935
 936                                 ok = 1;
 937                                 break;
 938                         }
 939                         if (!ok)
 940                                 *lp = l->next;
 941                         else
 942                                 lp = &l->next;
 943                 }
 944         }
 945
 946         for (l=linfo; l; l = n) {
 947                 n = l->next;
 948                 if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
 949                         struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
 950                         if (filter.family != AF_PACKET)
 951                                 print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
 952                 }
 953                 fflush(stdout);
 954                 free(l);
 955         }
 956
 957         return 0;
 958 }
 959
 960 int ipaddr_list_link(int argc, char **argv)
 961 {
 962         preferred_family = AF_PACKET;
 963         do_link = 1;
 964         return ipaddr_list_or_flush(argc, argv, 0);
 965 }
 966
 967 void ipaddr_reset_filter(int oneline)
 968 {
 969         memset(&filter, 0, sizeof(filter));
 970         filter.oneline = oneline;
 971 }
 972
 973 static int default_scope(inet_prefix *lcl)
 974 {
 975         if (lcl->family == AF_INET) {
 976                 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
 977                         return RT_SCOPE_HOST;
 978         }
 979         return 0;
 980 }
 981
 982 static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
 983 {
 984         struct {
 985                 struct nlmsghdr         n;
 986                 struct ifaddrmsg        ifa;
 987                 char                    buf[256];
 988         } req;
 989         char  *d = NULL;
 990         char  *l = NULL;
 991         char  *lcl_arg = NULL;
 992         char  *valid_lftp = NULL;
 993         char  *preferred_lftp = NULL;
 994         inet_prefix lcl;
 995         inet_prefix peer;
 996         int local_len = 0;
 997         int peer_len = 0;
 998         int brd_len = 0;
 999         int any_len = 0;
1000         int scoped = 0;
1001         __u32 preferred_lft = INFINITY_LIFE_TIME;
1002         __u32 valid_lft = INFINITY_LIFE_TIME;
1003         struct ifa_cacheinfo cinfo;
1004
1005         memset(&req, 0, sizeof(req));
1006
1007         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
1008         req.n.nlmsg_flags = NLM_F_REQUEST | flags;
1009         req.n.nlmsg_type = cmd;
1010         req.ifa.ifa_family = preferred_family;
1011
1012         while (argc > 0) {
1013                 if (strcmp(*argv, "peer") == 0 ||
1014                     strcmp(*argv, "remote") == 0) {
1015                         NEXT_ARG();
1016
1017                         if (peer_len)
1018                                 duparg("peer", *argv);
1019                         get_prefix(&peer, *argv, req.ifa.ifa_family);
1020                         peer_len = peer.bytelen;
1021                         if (req.ifa.ifa_family == AF_UNSPEC)
1022                                 req.ifa.ifa_family = peer.family;
1023                         addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
1024                         req.ifa.ifa_prefixlen = peer.bitlen;
1025                 } else if (matches(*argv, "broadcast") == 0 ||
1026                            strcmp(*argv, "brd") == 0) {
1027                         inet_prefix addr;
1028                         NEXT_ARG();
1029                         if (brd_len)
1030                                 duparg("broadcast", *argv);
1031                         if (strcmp(*argv, "+") == 0)
1032                                 brd_len = -1;
1033                         else if (strcmp(*argv, "-") == 0)
1034                                 brd_len = -2;
1035                         else {
1036                                 get_addr(&addr, *argv, req.ifa.ifa_family);
1037                                 if (req.ifa.ifa_family == AF_UNSPEC)
1038                                         req.ifa.ifa_family = addr.family;
1039                                 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
1040                                 brd_len = addr.bytelen;
1041                         }
1042                 } else if (strcmp(*argv, "anycast") == 0) {
1043                         inet_prefix addr;
1044                         NEXT_ARG();
1045                         if (any_len)
1046                                 duparg("anycast", *argv);
1047                         get_addr(&addr, *argv, req.ifa.ifa_family);
1048                         if (req.ifa.ifa_family == AF_UNSPEC)
1049                                 req.ifa.ifa_family = addr.family;
1050                         addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
1051                         any_len = addr.bytelen;
1052                 } else if (strcmp(*argv, "scope") == 0) {
1053                         unsigned scope = 0;
1054                         NEXT_ARG();
1055                         if (rtnl_rtscope_a2n(&scope, *argv))
1056                                 invarg(*argv, "invalid scope value.");
1057                         req.ifa.ifa_scope = scope;
1058                         scoped = 1;
1059                 } else if (strcmp(*argv, "dev") == 0) {
1060                         NEXT_ARG();
1061                         d = *argv;
1062                 } else if (strcmp(*argv, "label") == 0) {
1063                         NEXT_ARG();
1064                         l = *argv;
1065                         addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
1066                 } else if (matches(*argv, "valid_lft") == 0) {
1067                         if (valid_lftp)
1068                                 duparg("valid_lft", *argv);
1069                         NEXT_ARG();
1070                         valid_lftp = *argv;
1071                         if (set_lifetime(&valid_lft, *argv))
1072                                 invarg("valid_lft value", *argv);
1073                 } else if (matches(*argv, "preferred_lft") == 0) {
1074                         if (preferred_lftp)
1075                                 duparg("preferred_lft", *argv);
1076                         NEXT_ARG();
1077                         preferred_lftp = *argv;
1078                         if (set_lifetime(&preferred_lft, *argv))
1079                                 invarg("preferred_lft value", *argv);
1080                 } else if (strcmp(*argv, "home") == 0) {
1081                         req.ifa.ifa_flags |= IFA_F_HOMEADDRESS;
1082                 } else if (strcmp(*argv, "nodad") == 0) {
1083                         req.ifa.ifa_flags |= IFA_F_NODAD;
1084                 } else {
1085                         if (strcmp(*argv, "local") == 0) {
1086                                 NEXT_ARG();
1087                         }
1088                         if (matches(*argv, "help") == 0)
1089                                 usage();
1090                         if (local_len)
1091                                 duparg2("local", *argv);
1092                         lcl_arg = *argv;
1093                         get_prefix(&lcl, *argv, req.ifa.ifa_family);
1094                         if (req.ifa.ifa_family == AF_UNSPEC)
1095                                 req.ifa.ifa_family = lcl.family;
1096                         addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
1097                         local_len = lcl.bytelen;
1098                 }
1099                 argc--; argv++;
1100         }
1101         if (d == NULL) {
1102                 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
1103                 return -1;
1104         }
1105         if (l && matches(d, l) != 0) {
1106                 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
1107                 return -1;
1108         }
1109
1110         if (peer_len == 0 && local_len) {
1111                 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
1112                         fprintf(stderr,
1113                             "Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
1114                             "         Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
1115                             "         This special behaviour is likely to disappear in further releases,\n" \
1116                             "         fix your scripts!\n", lcl_arg, local_len*8);
1117                 } else {
1118                         peer = lcl;
1119                         addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
1120                 }
1121         }
1122         if (req.ifa.ifa_prefixlen == 0)
1123                 req.ifa.ifa_prefixlen = lcl.bitlen;
1124
1125         if (brd_len < 0 && cmd != RTM_DELADDR) {
1126                 inet_prefix brd;
1127                 int i;
1128                 if (req.ifa.ifa_family != AF_INET) {
1129                         fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
1130                         return -1;
1131                 }
1132                 brd = peer;
1133                 if (brd.bitlen <= 30) {
1134                         for (i=31; i>=brd.bitlen; i--) {
1135                                 if (brd_len == -1)
1136                                         brd.data[0] |= htonl(1<<(31-i));
1137                                 else
1138                                         brd.data[0] &= ~htonl(1<<(31-i));
1139                         }
1140                         addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
1141                         brd_len = brd.bytelen;
1142                 }
1143         }
1144         if (!scoped && cmd != RTM_DELADDR)
1145                 req.ifa.ifa_scope = default_scope(&lcl);
1146
1147         ll_init_map(&rth);
1148
1149         if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
1150                 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1151                 return -1;
1152         }
1153
1154         if (valid_lftp || preferred_lftp) {
1155                 if (!valid_lft) {
1156                         fprintf(stderr, "valid_lft is zero\n");
1157                         return -1;
1158                 }
1159                 if (valid_lft < preferred_lft) {
1160                         fprintf(stderr, "preferred_lft is greater than valid_lft\n");
1161                         return -1;
1162                 }
1163
1164                 memset(&cinfo, 0, sizeof(cinfo));
1165                 cinfo.ifa_prefered = preferred_lft;
1166                 cinfo.ifa_valid = valid_lft;
1167                 addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
1168                           sizeof(cinfo));
1169         }
1170
1171         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
1172                 return -2;
1173
1174         return 0;
1175 }
1176
1177 int do_ipaddr(int argc, char **argv)
1178 {
1179         if (argc < 1)
1180                 return ipaddr_list_or_flush(0, NULL, 0);
1181         if (matches(*argv, "add") == 0)
1182                 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
1183         if (matches(*argv, "change") == 0 ||
1184                 strcmp(*argv, "chg") == 0)
1185                 return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
1186         if (matches(*argv, "replace") == 0)
1187                 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
1188         if (matches(*argv, "delete") == 0)
1189                 return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
1190         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1191             || matches(*argv, "lst") == 0)
1192                 return ipaddr_list_or_flush(argc-1, argv+1, 0);
1193         if (matches(*argv, "flush") == 0)
1194                 return ipaddr_list_or_flush(argc-1, argv+1, 1);
1195         if (matches(*argv, "help") == 0)
1196                 usage();
1197         fprintf(stderr, "Command \"%s\" is unknown, try \"ip addr help\".\n", *argv);
1198         exit(-1);
1199 }
1200