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
  37 static struct
  38 {
  39         int ifindex;
  40         int family;
  41         int oneline;
  42         int showqueue;
  43         inet_prefix pfx;
  44         int scope, scopemask;
  45         int flags, flagmask;
  46         int up;
  47         char *label;
  48         int flushed;
  49         char *flushb;
  50         int flushp;
  51         int flushe;
  52         int group;
  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, struct rtattr *tb[IFLA_MAX + 1])
 134 {
 135         int qlen;
 136
 137         if (tb[IFLA_TXQLEN])
 138                 qlen = *(int *)RTA_DATA(tb[IFLA_TXQLEN]);
 139         else {
 140                 struct ifreq ifr;
 141                 int s = socket(AF_INET, SOCK_STREAM, 0);
 142
 143                 if (s < 0)
 144                         return;
 145
 146                 memset(&ifr, 0, sizeof(ifr));
 147                 strcpy(ifr.ifr_name, (char *)RTA_DATA(tb[IFLA_IFNAME]));
 148                 if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
 149                         fprintf(f, "ioctl(SIOCGIFXQLEN) failed: %s\n", strerror(errno));
 150                         close(s);
 151                         return;
 152                 }
 153                 close(s);
 154                 qlen = ifr.ifr_qlen;
 155         }
 156         if (qlen)
 157                 fprintf(f, "qlen %d", qlen);
 158 }
 159
 160 static void print_linktype(FILE *fp, struct rtattr *tb)
 161 {
 162         struct rtattr *linkinfo[IFLA_INFO_MAX+1];
 163         struct link_util *lu;
 164         char *kind;
 165
 166         parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
 167
 168         if (!linkinfo[IFLA_INFO_KIND])
 169                 return;
 170         kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
 171
 172         fprintf(fp, "%s", _SL_);
 173         fprintf(fp, "    %s ", kind);
 174
 175         lu = get_link_kind(kind);
 176         if (!lu || !lu->print_opt)
 177                 return;
 178
 179         if (1) {
 180                 struct rtattr *attr[lu->maxattr+1], **data = NULL;
 181
 182                 if (linkinfo[IFLA_INFO_DATA]) {
 183                         parse_rtattr_nested(attr, lu->maxattr,
 184                                             linkinfo[IFLA_INFO_DATA]);
 185                         data = attr;
 186                 }
 187                 lu->print_opt(lu, fp, data);
 188
 189                 if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
 190                     lu->print_xstats)
 191                         lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
 192         }
 193 }
 194
 195 static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
 196 {
 197         struct ifla_vf_mac *vf_mac;
 198         struct ifla_vf_vlan *vf_vlan;
 199         struct ifla_vf_tx_rate *vf_tx_rate;
 200         struct rtattr *vf[IFLA_VF_MAX+1];
 201         SPRINT_BUF(b1);
 202
 203         if (vfinfo->rta_type != IFLA_VF_INFO) {
 204                 fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
 205                 return;
 206         }
 207
 208         parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
 209
 210         vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
 211         vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
 212         vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
 213
 214         fprintf(fp, "\n    vf %d MAC %s", vf_mac->vf,
 215                 ll_addr_n2a((unsigned char *)&vf_mac->mac,
 216                 ETH_ALEN, 0, b1, sizeof(b1)));
 217         if (vf_vlan->vlan)
 218                 fprintf(fp, ", vlan %d", vf_vlan->vlan);
 219         if (vf_vlan->qos)
 220                 fprintf(fp, ", qos %d", vf_vlan->qos);
 221         if (vf_tx_rate->rate)
 222                 fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
 223 }
 224
 225 int print_linkinfo(const struct sockaddr_nl *who,
 226                    struct nlmsghdr *n, void *arg)
 227 {
 228         FILE *fp = (FILE*)arg;
 229         struct ifinfomsg *ifi = NLMSG_DATA(n);
 230         struct rtattr * tb[IFLA_MAX+1];
 231         int len = n->nlmsg_len;
 232         unsigned m_flag = 0;
 233
 234         if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
 235                 return 0;
 236
 237         len -= NLMSG_LENGTH(sizeof(*ifi));
 238         if (len < 0)
 239                 return -1;
 240
 241         if (filter.ifindex && ifi->ifi_index != filter.ifindex)
 242                 return 0;
 243         if (filter.up && !(ifi->ifi_flags&IFF_UP))
 244                 return 0;
 245
 246         parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
 247         if (tb[IFLA_IFNAME] == NULL) {
 248                 fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
 249         }
 250         if (filter.label &&
 251             (!filter.family || filter.family == AF_PACKET) &&
 252             fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
 253                 return 0;
 254
 255         if (tb[IFLA_GROUP]) {
 256                 int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
 257                 if (group != filter.group)
 258                         return -1;
 259         }
 260
 261         if (n->nlmsg_type == RTM_DELLINK)
 262                 fprintf(fp, "Deleted ");
 263
 264         fprintf(fp, "%d: %s", ifi->ifi_index,
 265                 tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
 266
 267         if (tb[IFLA_LINK]) {
 268                 SPRINT_BUF(b1);
 269                 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
 270                 if (iflink == 0)
 271                         fprintf(fp, "@NONE: ");
 272                 else {
 273                         fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
 274                         m_flag = ll_index_to_flags(iflink);
 275                         m_flag = !(m_flag & IFF_UP);
 276                 }
 277         } else {
 278                 fprintf(fp, ": ");
 279         }
 280         print_link_flags(fp, ifi->ifi_flags, m_flag);
 281
 282         if (tb[IFLA_MTU])
 283                 fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
 284         if (tb[IFLA_QDISC])
 285                 fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
 286         if (tb[IFLA_MASTER]) {
 287                 SPRINT_BUF(b1);
 288                 fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
 289         }
 290         if (tb[IFLA_OPERSTATE])
 291                 print_operstate(fp, *(__u8 *)RTA_DATA(tb[IFLA_OPERSTATE]));
 292
 293         if (filter.showqueue)
 294                 print_queuelen(fp, tb);
 295
 296         if (!filter.family || filter.family == AF_PACKET) {
 297                 SPRINT_BUF(b1);
 298                 fprintf(fp, "%s", _SL_);
 299                 fprintf(fp, "    link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
 300
 301                 if (tb[IFLA_ADDRESS]) {
 302                         fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
 303                                                       RTA_PAYLOAD(tb[IFLA_ADDRESS]),
 304                                                       ifi->ifi_type,
 305                                                       b1, sizeof(b1)));
 306                 }
 307                 if (tb[IFLA_BROADCAST]) {
 308                         if (ifi->ifi_flags&IFF_POINTOPOINT)
 309                                 fprintf(fp, " peer ");
 310                         else
 311                                 fprintf(fp, " brd ");
 312                         fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
 313                                                       RTA_PAYLOAD(tb[IFLA_BROADCAST]),
 314                                                       ifi->ifi_type,
 315                                                       b1, sizeof(b1)));
 316                 }
 317         }
 318
 319         if (do_link && tb[IFLA_LINKINFO] && show_details)
 320                 print_linktype(fp, tb[IFLA_LINKINFO]);
 321
 322         if (do_link && tb[IFLA_IFALIAS])
 323                 fprintf(fp,"\n    alias %s",
 324                         (const char *) RTA_DATA(tb[IFLA_IFALIAS]));
 325
 326         if (do_link && tb[IFLA_STATS64] && show_stats) {
 327                 struct rtnl_link_stats64 slocal;
 328                 struct rtnl_link_stats64 *s = RTA_DATA(tb[IFLA_STATS64]);
 329                 if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
 330                         memcpy(&slocal, s, sizeof(slocal));
 331                         s = &slocal;
 332                 }
 333                 fprintf(fp, "%s", _SL_);
 334                 fprintf(fp, "    RX: bytes  packets  errors  dropped overrun mcast   %s%s",
 335                         s->rx_compressed ? "compressed" : "", _SL_);
 336                 fprintf(fp, "    %-10llu %-8llu %-7llu %-7llu %-7llu %-7llu",
 337                         (unsigned long long)s->rx_bytes,
 338                         (unsigned long long)s->rx_packets,
 339                         (unsigned long long)s->rx_errors,
 340                         (unsigned long long)s->rx_dropped,
 341                         (unsigned long long)s->rx_over_errors,
 342                         (unsigned long long)s->multicast);
 343                 if (s->rx_compressed)
 344                         fprintf(fp, " %-7llu",
 345                                 (unsigned long long)s->rx_compressed);
 346                 if (show_stats > 1) {
 347                         fprintf(fp, "%s", _SL_);
 348                         fprintf(fp, "    RX errors: length  crc     frame   fifo    missed%s", _SL_);
 349                         fprintf(fp, "               %-7llu  %-7llu %-7llu %-7llu %-7llu",
 350                                 (unsigned long long)s->rx_length_errors,
 351                                 (unsigned long long)s->rx_crc_errors,
 352                                 (unsigned long long)s->rx_frame_errors,
 353                                 (unsigned long long)s->rx_fifo_errors,
 354                                 (unsigned long long)s->rx_missed_errors);
 355                 }
 356                 fprintf(fp, "%s", _SL_);
 357                 fprintf(fp, "    TX: bytes  packets  errors  dropped carrier collsns %s%s",
 358                         s->tx_compressed ? "compressed" : "", _SL_);
 359                 fprintf(fp, "    %-10llu %-8llu %-7llu %-7llu %-7llu %-7llu",
 360                         (unsigned long long)s->tx_bytes,
 361                         (unsigned long long)s->tx_packets,
 362                         (unsigned long long)s->tx_errors,
 363                         (unsigned long long)s->tx_dropped,
 364                         (unsigned long long)s->tx_carrier_errors,
 365                         (unsigned long long)s->collisions);
 366                 if (s->tx_compressed)
 367                         fprintf(fp, " %-7llu",
 368                                 (unsigned long long)s->tx_compressed);
 369                 if (show_stats > 1) {
 370                         fprintf(fp, "%s", _SL_);
 371                         fprintf(fp, "    TX errors: aborted fifo    window  heartbeat%s", _SL_);
 372                         fprintf(fp, "               %-7llu  %-7llu %-7llu %-7llu",
 373                                 (unsigned long long)s->tx_aborted_errors,
 374                                 (unsigned long long)s->tx_fifo_errors,
 375                                 (unsigned long long)s->tx_window_errors,
 376                                 (unsigned long long)s->tx_heartbeat_errors);
 377                 }
 378         }
 379         if (do_link && !tb[IFLA_STATS64] && tb[IFLA_STATS] && show_stats) {
 380                 struct rtnl_link_stats slocal;
 381                 struct rtnl_link_stats *s = RTA_DATA(tb[IFLA_STATS]);
 382                 if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
 383                         memcpy(&slocal, s, sizeof(slocal));
 384                         s = &slocal;
 385                 }
 386                 fprintf(fp, "%s", _SL_);
 387                 fprintf(fp, "    RX: bytes  packets  errors  dropped overrun mcast   %s%s",
 388                         s->rx_compressed ? "compressed" : "", _SL_);
 389                 fprintf(fp, "    %-10u %-8u %-7u %-7u %-7u %-7u",
 390                         s->rx_bytes, s->rx_packets, s->rx_errors,
 391                         s->rx_dropped, s->rx_over_errors,
 392                         s->multicast
 393                         );
 394                 if (s->rx_compressed)
 395                         fprintf(fp, " %-7u", s->rx_compressed);
 396                 if (show_stats > 1) {
 397                         fprintf(fp, "%s", _SL_);
 398                         fprintf(fp, "    RX errors: length  crc     frame   fifo    missed%s", _SL_);
 399                         fprintf(fp, "               %-7u  %-7u %-7u %-7u %-7u",
 400                                 s->rx_length_errors,
 401                                 s->rx_crc_errors,
 402                                 s->rx_frame_errors,
 403                                 s->rx_fifo_errors,
 404                                 s->rx_missed_errors
 405                                 );
 406                 }
 407                 fprintf(fp, "%s", _SL_);
 408                 fprintf(fp, "    TX: bytes  packets  errors  dropped carrier collsns %s%s",
 409                         s->tx_compressed ? "compressed" : "", _SL_);
 410                 fprintf(fp, "    %-10u %-8u %-7u %-7u %-7u %-7u",
 411                         s->tx_bytes, s->tx_packets, s->tx_errors,
 412                         s->tx_dropped, s->tx_carrier_errors, s->collisions);
 413                 if (s->tx_compressed)
 414                         fprintf(fp, " %-7u", s->tx_compressed);
 415                 if (show_stats > 1) {
 416                         fprintf(fp, "%s", _SL_);
 417                         fprintf(fp, "    TX errors: aborted fifo    window  heartbeat%s", _SL_);
 418                         fprintf(fp, "               %-7u  %-7u %-7u %-7u",
 419                                 s->tx_aborted_errors,
 420                                 s->tx_fifo_errors,
 421                                 s->tx_window_errors,
 422                                 s->tx_heartbeat_errors
 423                                 );
 424                 }
 425         }
 426         if (do_link && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
 427                 struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
 428                 int rem = RTA_PAYLOAD(vflist);
 429                 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
 430                         print_vfinfo(fp, i);
 431         }
 432
 433         fprintf(fp, "\n");
 434         fflush(fp);
 435         return 0;
 436 }
 437
 438 static int flush_update(void)
 439 {
 440         if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
 441                 perror("Failed to send flush request");
 442                 return -1;
 443         }
 444         filter.flushp = 0;
 445         return 0;
 446 }
 447
 448 static int set_lifetime(unsigned int *lifetime, char *argv)
 449 {
 450         if (strcmp(argv, "forever") == 0)
 451                 *lifetime = INFINITY_LIFE_TIME;
 452         else if (get_u32(lifetime, argv, 0))
 453                 return -1;
 454
 455         return 0;
 456 }
 457
 458 int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
 459                    void *arg)
 460 {
 461         FILE *fp = (FILE*)arg;
 462         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 463         int len = n->nlmsg_len;
 464         int deprecated = 0;
 465         /* Use local copy of ifa_flags to not interfere with filtering code */
 466         unsigned int ifa_flags;
 467         struct rtattr * rta_tb[IFA_MAX+1];
 468         char abuf[256];
 469         SPRINT_BUF(b1);
 470
 471         if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
 472                 return 0;
 473         len -= NLMSG_LENGTH(sizeof(*ifa));
 474         if (len < 0) {
 475                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 476                 return -1;
 477         }
 478
 479         if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
 480                 return 0;
 481
 482         parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
 483
 484         if (!rta_tb[IFA_LOCAL])
 485                 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
 486         if (!rta_tb[IFA_ADDRESS])
 487                 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
 488
 489         if (filter.ifindex && filter.ifindex != ifa->ifa_index)
 490                 return 0;
 491         if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
 492                 return 0;
 493         if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
 494                 return 0;
 495         if (filter.label) {
 496                 SPRINT_BUF(b1);
 497                 const char *label;
 498                 if (rta_tb[IFA_LABEL])
 499                         label = RTA_DATA(rta_tb[IFA_LABEL]);
 500                 else
 501                         label = ll_idx_n2a(ifa->ifa_index, b1);
 502                 if (fnmatch(filter.label, label, 0) != 0)
 503                         return 0;
 504         }
 505         if (filter.pfx.family) {
 506                 if (rta_tb[IFA_LOCAL]) {
 507                         inet_prefix dst;
 508                         memset(&dst, 0, sizeof(dst));
 509                         dst.family = ifa->ifa_family;
 510                         memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
 511                         if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
 512                                 return 0;
 513                 }
 514         }
 515
 516         if (filter.family && filter.family != ifa->ifa_family)
 517                 return 0;
 518
 519         if (filter.flushb) {
 520                 struct nlmsghdr *fn;
 521                 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
 522                         if (flush_update())
 523                                 return -1;
 524                 }
 525                 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
 526                 memcpy(fn, n, n->nlmsg_len);
 527                 fn->nlmsg_type = RTM_DELADDR;
 528                 fn->nlmsg_flags = NLM_F_REQUEST;
 529                 fn->nlmsg_seq = ++rth.seq;
 530                 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
 531                 filter.flushed++;
 532                 if (show_stats < 2)
 533                         return 0;
 534         }
 535
 536         if (n->nlmsg_type == RTM_DELADDR)
 537                 fprintf(fp, "Deleted ");
 538
 539         if (filter.oneline || filter.flushb)
 540                 fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
 541         if (ifa->ifa_family == AF_INET)
 542                 fprintf(fp, "    inet ");
 543         else if (ifa->ifa_family == AF_INET6)
 544                 fprintf(fp, "    inet6 ");
 545         else if (ifa->ifa_family == AF_DECnet)
 546                 fprintf(fp, "    dnet ");
 547         else if (ifa->ifa_family == AF_IPX)
 548                 fprintf(fp, "     ipx ");
 549         else
 550                 fprintf(fp, "    family %d ", ifa->ifa_family);
 551
 552         if (rta_tb[IFA_LOCAL]) {
 553                 fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
 554                                               RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
 555                                               RTA_DATA(rta_tb[IFA_LOCAL]),
 556                                               abuf, sizeof(abuf)));
 557
 558                 if (rta_tb[IFA_ADDRESS] == NULL ||
 559                     memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
 560                         fprintf(fp, "/%d ", ifa->ifa_prefixlen);
 561                 } else {
 562                         fprintf(fp, " peer %s/%d ",
 563                                 rt_addr_n2a(ifa->ifa_family,
 564                                             RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
 565                                             RTA_DATA(rta_tb[IFA_ADDRESS]),
 566                                             abuf, sizeof(abuf)),
 567                                 ifa->ifa_prefixlen);
 568                 }
 569         }
 570
 571         if (rta_tb[IFA_BROADCAST]) {
 572                 fprintf(fp, "brd %s ",
 573                         rt_addr_n2a(ifa->ifa_family,
 574                                     RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
 575                                     RTA_DATA(rta_tb[IFA_BROADCAST]),
 576                                     abuf, sizeof(abuf)));
 577         }
 578         if (rta_tb[IFA_ANYCAST]) {
 579                 fprintf(fp, "any %s ",
 580                         rt_addr_n2a(ifa->ifa_family,
 581                                     RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
 582                                     RTA_DATA(rta_tb[IFA_ANYCAST]),
 583                                     abuf, sizeof(abuf)));
 584         }
 585         fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
 586         ifa_flags = ifa->ifa_flags;
 587         if (ifa->ifa_flags&IFA_F_SECONDARY) {
 588                 ifa_flags &= ~IFA_F_SECONDARY;
 589                 if (ifa->ifa_family == AF_INET6)
 590                         fprintf(fp, "temporary ");
 591                 else
 592                         fprintf(fp, "secondary ");
 593         }
 594         if (ifa->ifa_flags&IFA_F_TENTATIVE) {
 595                 ifa_flags &= ~IFA_F_TENTATIVE;
 596                 fprintf(fp, "tentative ");
 597         }
 598         if (ifa->ifa_flags&IFA_F_DEPRECATED) {
 599                 ifa_flags &= ~IFA_F_DEPRECATED;
 600                 deprecated = 1;
 601                 fprintf(fp, "deprecated ");
 602         }
 603         if (ifa->ifa_flags&IFA_F_HOMEADDRESS) {
 604                 ifa_flags &= ~IFA_F_HOMEADDRESS;
 605                 fprintf(fp, "home ");
 606         }
 607         if (ifa->ifa_flags&IFA_F_NODAD) {
 608                 ifa_flags &= ~IFA_F_NODAD;
 609                 fprintf(fp, "nodad ");
 610         }
 611         if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
 612                 fprintf(fp, "dynamic ");
 613         } else
 614                 ifa_flags &= ~IFA_F_PERMANENT;
 615         if (ifa->ifa_flags&IFA_F_DADFAILED) {
 616                 ifa_flags &= ~IFA_F_DADFAILED;
 617                 fprintf(fp, "dadfailed ");
 618         }
 619         if (ifa_flags)
 620                 fprintf(fp, "flags %02x ", ifa_flags);
 621         if (rta_tb[IFA_LABEL])
 622                 fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
 623         if (rta_tb[IFA_CACHEINFO]) {
 624                 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
 625                 fprintf(fp, "%s", _SL_);
 626                 fprintf(fp, "       valid_lft ");
 627                 if (ci->ifa_valid == INFINITY_LIFE_TIME)
 628                         fprintf(fp, "forever");
 629                 else
 630                         fprintf(fp, "%usec", ci->ifa_valid);
 631                 fprintf(fp, " preferred_lft ");
 632                 if (ci->ifa_prefered == INFINITY_LIFE_TIME)
 633                         fprintf(fp, "forever");
 634                 else {
 635                         if (deprecated)
 636                                 fprintf(fp, "%dsec", ci->ifa_prefered);
 637                         else
 638                                 fprintf(fp, "%usec", ci->ifa_prefered);
 639                 }
 640         }
 641         fprintf(fp, "\n");
 642         fflush(fp);
 643         return 0;
 644 }
 645
 646 int print_addrinfo_primary(const struct sockaddr_nl *who, struct nlmsghdr *n,
 647                            void *arg)
 648 {
 649         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 650
 651         if (ifa->ifa_flags & IFA_F_SECONDARY)
 652                 return 0;
 653
 654         return print_addrinfo(who, n, arg);
 655 }
 656
 657 int print_addrinfo_secondary(const struct sockaddr_nl *who, struct nlmsghdr *n,
 658                              void *arg)
 659 {
 660         struct ifaddrmsg *ifa = NLMSG_DATA(n);
 661
 662         if (!(ifa->ifa_flags & IFA_F_SECONDARY))
 663                 return 0;
 664
 665         return print_addrinfo(who, n, arg);
 666 }
 667
 668 struct nlmsg_list
 669 {
 670         struct nlmsg_list *next;
 671         struct nlmsghdr   h;
 672 };
 673
 674 static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
 675 {
 676         for ( ;ainfo ;  ainfo = ainfo->next) {
 677                 struct nlmsghdr *n = &ainfo->h;
 678                 struct ifaddrmsg *ifa = NLMSG_DATA(n);
 679
 680                 if (n->nlmsg_type != RTM_NEWADDR)
 681                         continue;
 682
 683                 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
 684                         return -1;
 685
 686                 if (ifa->ifa_index != ifindex ||
 687                     (filter.family && filter.family != ifa->ifa_family))
 688                         continue;
 689
 690                 print_addrinfo(NULL, n, fp);
 691         }
 692         return 0;
 693 }
 694
 695
 696 static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
 697                        void *arg)
 698 {
 699         struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
 700         struct nlmsg_list *h;
 701         struct nlmsg_list **lp;
 702
 703         h = malloc(n->nlmsg_len+sizeof(void*));
 704         if (h == NULL)
 705                 return -1;
 706
 707         memcpy(&h->h, n, n->nlmsg_len);
 708         h->next = NULL;
 709
 710         for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
 711         *lp = h;
 712
 713         ll_remember_index(who, n, NULL);
 714         return 0;
 715 }
 716
 717 static int ipaddr_list_or_flush(int argc, char **argv, int flush)
 718 {
 719         struct nlmsg_list *linfo = NULL;
 720         struct nlmsg_list *ainfo = NULL;
 721         struct nlmsg_list *l, *n;
 722         char *filter_dev = NULL;
 723         int no_link = 0;
 724
 725         ipaddr_reset_filter(oneline);
 726         filter.showqueue = 1;
 727
 728         if (filter.family == AF_UNSPEC)
 729                 filter.family = preferred_family;
 730
 731         filter.group = INIT_NETDEV_GROUP;
 732
 733         if (flush) {
 734                 if (argc <= 0) {
 735                         fprintf(stderr, "Flush requires arguments.\n");
 736
 737                         return -1;
 738                 }
 739                 if (filter.family == AF_PACKET) {
 740                         fprintf(stderr, "Cannot flush link addresses.\n");
 741                         return -1;
 742                 }
 743         }
 744
 745         while (argc > 0) {
 746                 if (strcmp(*argv, "to") == 0) {
 747                         NEXT_ARG();
 748                         get_prefix(&filter.pfx, *argv, filter.family);
 749                         if (filter.family == AF_UNSPEC)
 750                                 filter.family = filter.pfx.family;
 751                 } else if (strcmp(*argv, "scope") == 0) {
 752                         unsigned scope = 0;
 753                         NEXT_ARG();
 754                         filter.scopemask = -1;
 755                         if (rtnl_rtscope_a2n(&scope, *argv)) {
 756                                 if (strcmp(*argv, "all") != 0)
 757                                         invarg("invalid \"scope\"\n", *argv);
 758                                 scope = RT_SCOPE_NOWHERE;
 759                                 filter.scopemask = 0;
 760                         }
 761                         filter.scope = scope;
 762                 } else if (strcmp(*argv, "up") == 0) {
 763                         filter.up = 1;
 764                 } else if (strcmp(*argv, "dynamic") == 0) {
 765                         filter.flags &= ~IFA_F_PERMANENT;
 766                         filter.flagmask |= IFA_F_PERMANENT;
 767                 } else if (strcmp(*argv, "permanent") == 0) {
 768                         filter.flags |= IFA_F_PERMANENT;
 769                         filter.flagmask |= IFA_F_PERMANENT;
 770                 } else if (strcmp(*argv, "secondary") == 0 ||
 771                            strcmp(*argv, "temporary") == 0) {
 772                         filter.flags |= IFA_F_SECONDARY;
 773                         filter.flagmask |= IFA_F_SECONDARY;
 774                 } else if (strcmp(*argv, "primary") == 0) {
 775                         filter.flags &= ~IFA_F_SECONDARY;
 776                         filter.flagmask |= IFA_F_SECONDARY;
 777                 } else if (strcmp(*argv, "tentative") == 0) {
 778                         filter.flags |= IFA_F_TENTATIVE;
 779                         filter.flagmask |= IFA_F_TENTATIVE;
 780                 } else if (strcmp(*argv, "deprecated") == 0) {
 781                         filter.flags |= IFA_F_DEPRECATED;
 782                         filter.flagmask |= IFA_F_DEPRECATED;
 783                 } else if (strcmp(*argv, "home") == 0) {
 784                         filter.flags |= IFA_F_HOMEADDRESS;
 785                         filter.flagmask |= IFA_F_HOMEADDRESS;
 786                 } else if (strcmp(*argv, "nodad") == 0) {
 787                         filter.flags |= IFA_F_NODAD;
 788                         filter.flagmask |= IFA_F_NODAD;
 789                 } else if (strcmp(*argv, "dadfailed") == 0) {
 790                         filter.flags |= IFA_F_DADFAILED;
 791                         filter.flagmask |= IFA_F_DADFAILED;
 792                 } else if (strcmp(*argv, "label") == 0) {
 793                         NEXT_ARG();
 794                         filter.label = *argv;
 795                 } else if (strcmp(*argv, "group") == 0) {
 796                         NEXT_ARG();
 797                         if (rtnl_group_a2n(&filter.group, *argv))
 798                                 invarg("Invalid \"group\" value\n", *argv);
 799                 } else {
 800                         if (strcmp(*argv, "dev") == 0) {
 801                                 NEXT_ARG();
 802                         }
 803                         if (matches(*argv, "help") == 0)
 804                                 usage();
 805                         if (filter_dev)
 806                                 duparg2("dev", *argv);
 807                         filter_dev = *argv;
 808                 }
 809                 argv++; argc--;
 810         }
 811
 812         if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
 813                 perror("Cannot send dump request");
 814                 exit(1);
 815         }
 816
 817         if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
 818                 fprintf(stderr, "Dump terminated\n");
 819                 exit(1);
 820         }
 821
 822         if (filter_dev) {
 823                 filter.ifindex = ll_name_to_index(filter_dev);
 824                 if (filter.ifindex <= 0) {
 825                         fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
 826                         return -1;
 827                 }
 828         }
 829
 830         if (flush) {
 831                 int round = 0;
 832                 char flushb[4096-512];
 833
 834                 filter.flushb = flushb;
 835                 filter.flushp = 0;
 836                 filter.flushe = sizeof(flushb);
 837
 838                 while ((max_flush_loops == 0) || (round < max_flush_loops)) {
 839                         const struct rtnl_dump_filter_arg a[3] = {
 840                                 {
 841                                         .filter = print_addrinfo_secondary,
 842                                         .arg1 = stdout,
 843                                         .junk = NULL,
 844                                         .arg2 = NULL
 845                                 },
 846                                 {
 847                                         .filter = print_addrinfo_primary,
 848                                         .arg1 = stdout,
 849                                         .junk = NULL,
 850                                         .arg2 = NULL
 851                                 },
 852                                 {
 853                                         .filter = NULL,
 854                                         .arg1 = NULL,
 855                                         .junk = NULL,
 856                                         .arg2 = NULL
 857                                 },
 858                         };
 859                         if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
 860                                 perror("Cannot send dump request");
 861                                 exit(1);
 862                         }
 863                         filter.flushed = 0;
 864                         if (rtnl_dump_filter_l(&rth, a) < 0) {
 865                                 fprintf(stderr, "Flush terminated\n");
 866                                 exit(1);
 867                         }
 868                         if (filter.flushed == 0) {
 869 flush_done:
 870                                 if (show_stats) {
 871                                         if (round == 0)
 872                                                 printf("Nothing to flush.\n");
 873                                         else
 874                                                 printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
 875                                 }
 876                                 fflush(stdout);
 877                                 return 0;
 878                         }
 879                         round++;
 880                         if (flush_update() < 0)
 881                                 return 1;
 882
 883                         if (show_stats) {
 884                                 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
 885                                 fflush(stdout);
 886                         }
 887
 888                         /* If we are flushing, and specifying primary, then we
 889                          * want to flush only a single round.  Otherwise, we'll
 890                          * start flushing secondaries that were promoted to
 891                          * primaries.
 892                          */
 893                         if (!(filter.flags & IFA_F_SECONDARY) && (filter.flagmask & IFA_F_SECONDARY))
 894                                 goto flush_done;
 895                 }
 896                 fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", max_flush_loops);
 897                 fflush(stderr);
 898                 return 1;
 899         }
 900
 901         if (filter.family != AF_PACKET) {
 902                 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
 903                         perror("Cannot send dump request");
 904                         exit(1);
 905                 }
 906
 907                 if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
 908                         fprintf(stderr, "Dump terminated\n");
 909                         exit(1);
 910                 }
 911         }
 912
 913
 914         if (filter.family && filter.family != AF_PACKET) {
 915                 struct nlmsg_list **lp;
 916                 lp=&linfo;
 917
 918                 if (filter.oneline)
 919                         no_link = 1;
 920
 921                 while ((l=*lp)!=NULL) {
 922                         int ok = 0;
 923                         struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
 924                         struct nlmsg_list *a;
 925
 926                         for (a=ainfo; a; a=a->next) {
 927                                 struct nlmsghdr *n = &a->h;
 928                                 struct ifaddrmsg *ifa = NLMSG_DATA(n);
 929
 930                                 if (ifa->ifa_index != ifi->ifi_index ||
 931                                     (filter.family && filter.family != ifa->ifa_family))
 932                                         continue;
 933                                 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
 934                                         continue;
 935                                 if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
 936                                         continue;
 937                                 if (filter.pfx.family || filter.label) {
 938                                         struct rtattr *tb[IFA_MAX+1];
 939                                         parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
 940                                         if (!tb[IFA_LOCAL])
 941                                                 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
 942
 943                                         if (filter.pfx.family && tb[IFA_LOCAL]) {
 944                                                 inet_prefix dst;
 945                                                 memset(&dst, 0, sizeof(dst));
 946                                                 dst.family = ifa->ifa_family;
 947                                                 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
 948                                                 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
 949                                                         continue;
 950                                         }
 951                                         if (filter.label) {
 952                                                 SPRINT_BUF(b1);
 953                                                 const char *label;
 954                                                 if (tb[IFA_LABEL])
 955                                                         label = RTA_DATA(tb[IFA_LABEL]);
 956                                                 else
 957                                                         label = ll_idx_n2a(ifa->ifa_index, b1);
 958                                                 if (fnmatch(filter.label, label, 0) != 0)
 959                                                         continue;
 960                                         }
 961                                 }
 962
 963                                 ok = 1;
 964                                 break;
 965                         }
 966                         if (!ok)
 967                                 *lp = l->next;
 968                         else
 969                                 lp = &l->next;
 970                 }
 971         }
 972
 973         for (l=linfo; l; l = n) {
 974                 n = l->next;
 975                 if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
 976                         struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
 977                         if (filter.family != AF_PACKET)
 978                                 print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
 979                 }
 980                 fflush(stdout);
 981                 free(l);
 982         }
 983
 984         return 0;
 985 }
 986
 987 int ipaddr_list_link(int argc, char **argv)
 988 {
 989         preferred_family = AF_PACKET;
 990         do_link = 1;
 991         return ipaddr_list_or_flush(argc, argv, 0);
 992 }
 993
 994 void ipaddr_reset_filter(int oneline)
 995 {
 996         memset(&filter, 0, sizeof(filter));
 997         filter.oneline = oneline;
 998 }
 999
1000 static int default_scope(inet_prefix *lcl)
1001 {
1002         if (lcl->family == AF_INET) {
1003                 if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
1004                         return RT_SCOPE_HOST;
1005         }
1006         return 0;
1007 }
1008
1009 static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
1010 {
1011         struct {
1012                 struct nlmsghdr         n;
1013                 struct ifaddrmsg        ifa;
1014                 char                    buf[256];
1015         } req;
1016         char  *d = NULL;
1017         char  *l = NULL;
1018         char  *lcl_arg = NULL;
1019         char  *valid_lftp = NULL;
1020         char  *preferred_lftp = NULL;
1021         inet_prefix lcl;
1022         inet_prefix peer;
1023         int local_len = 0;
1024         int peer_len = 0;
1025         int brd_len = 0;
1026         int any_len = 0;
1027         int scoped = 0;
1028         __u32 preferred_lft = INFINITY_LIFE_TIME;
1029         __u32 valid_lft = INFINITY_LIFE_TIME;
1030         struct ifa_cacheinfo cinfo;
1031
1032         memset(&req, 0, sizeof(req));
1033
1034         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
1035         req.n.nlmsg_flags = NLM_F_REQUEST | flags;
1036         req.n.nlmsg_type = cmd;
1037         req.ifa.ifa_family = preferred_family;
1038
1039         while (argc > 0) {
1040                 if (strcmp(*argv, "peer") == 0 ||
1041                     strcmp(*argv, "remote") == 0) {
1042                         NEXT_ARG();
1043
1044                         if (peer_len)
1045                                 duparg("peer", *argv);
1046                         get_prefix(&peer, *argv, req.ifa.ifa_family);
1047                         peer_len = peer.bytelen;
1048                         if (req.ifa.ifa_family == AF_UNSPEC)
1049                                 req.ifa.ifa_family = peer.family;
1050                         addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
1051                         req.ifa.ifa_prefixlen = peer.bitlen;
1052                 } else if (matches(*argv, "broadcast") == 0 ||
1053                            strcmp(*argv, "brd") == 0) {
1054                         inet_prefix addr;
1055                         NEXT_ARG();
1056                         if (brd_len)
1057                                 duparg("broadcast", *argv);
1058                         if (strcmp(*argv, "+") == 0)
1059                                 brd_len = -1;
1060                         else if (strcmp(*argv, "-") == 0)
1061                                 brd_len = -2;
1062                         else {
1063                                 get_addr(&addr, *argv, req.ifa.ifa_family);
1064                                 if (req.ifa.ifa_family == AF_UNSPEC)
1065                                         req.ifa.ifa_family = addr.family;
1066                                 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
1067                                 brd_len = addr.bytelen;
1068                         }
1069                 } else if (strcmp(*argv, "anycast") == 0) {
1070                         inet_prefix addr;
1071                         NEXT_ARG();
1072                         if (any_len)
1073                                 duparg("anycast", *argv);
1074                         get_addr(&addr, *argv, req.ifa.ifa_family);
1075                         if (req.ifa.ifa_family == AF_UNSPEC)
1076                                 req.ifa.ifa_family = addr.family;
1077                         addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
1078                         any_len = addr.bytelen;
1079                 } else if (strcmp(*argv, "scope") == 0) {
1080                         unsigned scope = 0;
1081                         NEXT_ARG();
1082                         if (rtnl_rtscope_a2n(&scope, *argv))
1083                                 invarg(*argv, "invalid scope value.");
1084                         req.ifa.ifa_scope = scope;
1085                         scoped = 1;
1086                 } else if (strcmp(*argv, "dev") == 0) {
1087                         NEXT_ARG();
1088                         d = *argv;
1089                 } else if (strcmp(*argv, "label") == 0) {
1090                         NEXT_ARG();
1091                         l = *argv;
1092                         addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
1093                 } else if (matches(*argv, "valid_lft") == 0) {
1094                         if (valid_lftp)
1095                                 duparg("valid_lft", *argv);
1096                         NEXT_ARG();
1097                         valid_lftp = *argv;
1098                         if (set_lifetime(&valid_lft, *argv))
1099                                 invarg("valid_lft value", *argv);
1100                 } else if (matches(*argv, "preferred_lft") == 0) {
1101                         if (preferred_lftp)
1102                                 duparg("preferred_lft", *argv);
1103                         NEXT_ARG();
1104                         preferred_lftp = *argv;
1105                         if (set_lifetime(&preferred_lft, *argv))
1106                                 invarg("preferred_lft value", *argv);
1107                 } else if (strcmp(*argv, "home") == 0) {
1108                         req.ifa.ifa_flags |= IFA_F_HOMEADDRESS;
1109                 } else if (strcmp(*argv, "nodad") == 0) {
1110                         req.ifa.ifa_flags |= IFA_F_NODAD;
1111                 } else {
1112                         if (strcmp(*argv, "local") == 0) {
1113                                 NEXT_ARG();
1114                         }
1115                         if (matches(*argv, "help") == 0)
1116                                 usage();
1117                         if (local_len)
1118                                 duparg2("local", *argv);
1119                         lcl_arg = *argv;
1120                         get_prefix(&lcl, *argv, req.ifa.ifa_family);
1121                         if (req.ifa.ifa_family == AF_UNSPEC)
1122                                 req.ifa.ifa_family = lcl.family;
1123                         addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
1124                         local_len = lcl.bytelen;
1125                 }
1126                 argc--; argv++;
1127         }
1128         if (d == NULL) {
1129                 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
1130                 return -1;
1131         }
1132         if (l && matches(d, l) != 0) {
1133                 fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
1134                 return -1;
1135         }
1136
1137         if (peer_len == 0 && local_len) {
1138                 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
1139                         fprintf(stderr,
1140                             "Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
1141                             "         Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
1142                             "         This special behaviour is likely to disappear in further releases,\n" \
1143                             "         fix your scripts!\n", lcl_arg, local_len*8);
1144                 } else {
1145                         peer = lcl;
1146                         addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
1147                 }
1148         }
1149         if (req.ifa.ifa_prefixlen == 0)
1150                 req.ifa.ifa_prefixlen = lcl.bitlen;
1151
1152         if (brd_len < 0 && cmd != RTM_DELADDR) {
1153                 inet_prefix brd;
1154                 int i;
1155                 if (req.ifa.ifa_family != AF_INET) {
1156                         fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
1157                         return -1;
1158                 }
1159                 brd = peer;
1160                 if (brd.bitlen <= 30) {
1161                         for (i=31; i>=brd.bitlen; i--) {
1162                                 if (brd_len == -1)
1163                                         brd.data[0] |= htonl(1<<(31-i));
1164                                 else
1165                                         brd.data[0] &= ~htonl(1<<(31-i));
1166                         }
1167                         addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
1168                         brd_len = brd.bytelen;
1169                 }
1170         }
1171         if (!scoped && cmd != RTM_DELADDR)
1172                 req.ifa.ifa_scope = default_scope(&lcl);
1173
1174         ll_init_map(&rth);
1175
1176         if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
1177                 fprintf(stderr, "Cannot find device \"%s\"\n", d);
1178                 return -1;
1179         }
1180
1181         if (valid_lftp || preferred_lftp) {
1182                 if (!valid_lft) {
1183                         fprintf(stderr, "valid_lft is zero\n");
1184                         return -1;
1185                 }
1186                 if (valid_lft < preferred_lft) {
1187                         fprintf(stderr, "preferred_lft is greater than valid_lft\n");
1188                         return -1;
1189                 }
1190
1191                 memset(&cinfo, 0, sizeof(cinfo));
1192                 cinfo.ifa_prefered = preferred_lft;
1193                 cinfo.ifa_valid = valid_lft;
1194                 addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
1195                           sizeof(cinfo));
1196         }
1197
1198         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
1199                 return -2;
1200
1201         return 0;
1202 }
1203
1204 int do_ipaddr(int argc, char **argv)
1205 {
1206         if (argc < 1)
1207                 return ipaddr_list_or_flush(0, NULL, 0);
1208         if (matches(*argv, "add") == 0)
1209                 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
1210         if (matches(*argv, "change") == 0 ||
1211                 strcmp(*argv, "chg") == 0)
1212                 return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
1213         if (matches(*argv, "replace") == 0)
1214                 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
1215         if (matches(*argv, "delete") == 0)
1216                 return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
1217         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1218             || matches(*argv, "lst") == 0)
1219                 return ipaddr_list_or_flush(argc-1, argv+1, 0);
1220         if (matches(*argv, "flush") == 0)
1221                 return ipaddr_list_or_flush(argc-1, argv+1, 1);
1222         if (matches(*argv, "help") == 0)
1223                 usage();
1224         fprintf(stderr, "Command \"%s\" is unknown, try \"ip addr help\".\n", *argv);
1225         exit(-1);
1226 }
1227