1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1983, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/socket.h> 46 #include <sys/ioctl.h> 47 48 #include <net/if.h> 49 #include <net/if_dl.h> 50 #include <netinet/in.h> 51 #include <netinet/in_var.h> 52 #include <arpa/inet.h> 53 #include <netdb.h> 54 55 #define IPXIP 56 #define IPTUNNEL 57 #include <netipx/ipx.h> 58 #include <netipx/ipx_if.h> 59 60 #define NSIP 61 #include <netns/ns.h> 62 #include <netns/ns_if.h> 63 64 #define EON 65 #include <netiso/iso.h> 66 #include <netiso/iso_var.h> 67 #include <sys/protosw.h> 68 69 #include <ctype.h> 70 #include <err.h> 71 #include <errno.h> 72 #include <stdio.h> 73 #include <stdlib.h> 74 #include <string.h> 75 #include <unistd.h> 76 #include <nlist.h> 77 #include <kvm.h> 78 #include <fcntl.h> 79 80 struct ifreq ifr, ridreq; 81 struct ifaliasreq addreq; 82 struct iso_ifreq iso_ridreq; 83 struct iso_aliasreq iso_addreq; 84 struct sockaddr_in netmask; 85 86 char name[30]; 87 int flags; 88 int metric; 89 int mtu; 90 int nsellength = 1; 91 int setaddr; 92 int setipdst; 93 int doalias; 94 int clearaddr; 95 int newaddr = 1; 96 int s; 97 kvm_t *kvmd; 98 extern int errno; 99 100 int setifflags(), setifaddr(), setifdstaddr(), setifnetmask(); 101 int setifmetric(), setifmtu(), setifbroadaddr(), setifipdst(); 102 int notealias(), setsnpaoffset(), setnsellength(), notrailers(); 103 104 #define NEXTARG 0xffffff 105 106 struct cmd { 107 char *c_name; 108 int c_parameter; /* NEXTARG means next argv */ 109 int (*c_func)(); 110 } cmds[] = { 111 { "up", IFF_UP, setifflags } , 112 { "down", -IFF_UP, setifflags }, 113 { "trailers", -1, notrailers }, 114 { "-trailers", 1, notrailers }, 115 { "arp", -IFF_NOARP, setifflags }, 116 { "-arp", IFF_NOARP, setifflags }, 117 { "debug", IFF_DEBUG, setifflags }, 118 { "-debug", -IFF_DEBUG, setifflags }, 119 { "alias", IFF_UP, notealias }, 120 { "-alias", -IFF_UP, notealias }, 121 { "delete", -IFF_UP, notealias }, 122 #ifdef notdef 123 #define EN_SWABIPS 0x1000 124 { "swabips", EN_SWABIPS, setifflags }, 125 { "-swabips", -EN_SWABIPS, setifflags }, 126 #endif 127 { "netmask", NEXTARG, setifnetmask }, 128 { "metric", NEXTARG, setifmetric }, 129 { "broadcast", NEXTARG, setifbroadaddr }, 130 { "ipdst", NEXTARG, setifipdst }, 131 { "snpaoffset", NEXTARG, setsnpaoffset }, 132 { "nsellength", NEXTARG, setnsellength }, 133 { "link0", IFF_LINK0, setifflags }, 134 { "-link0", -IFF_LINK0, setifflags }, 135 { "link1", IFF_LINK1, setifflags }, 136 { "-link1", -IFF_LINK1, setifflags }, 137 { "link2", IFF_LINK2, setifflags }, 138 { "-link2", -IFF_LINK2, setifflags }, 139 { "normal", -IFF_LINK0, setifflags }, 140 { "compress", IFF_LINK0, setifflags }, 141 { "noicmp", IFF_LINK1, setifflags }, 142 { "mtu", NEXTARG, setifmtu }, 143 { 0, 0, setifaddr }, 144 { 0, 0, setifdstaddr }, 145 }; 146 147 /* 148 * XNS support liberally adapted from code written at the University of 149 * Maryland principally by James O'Toole and Chris Torek. 150 */ 151 int in_status(), in_getaddr(); 152 int ipx_status(), ipx_getaddr(); 153 int xns_status(), xns_getaddr(); 154 int iso_status(), iso_getaddr(); 155 int ether_status(); 156 157 /* Known address families */ 158 struct afswtch { 159 char *af_name; 160 short af_af; 161 int (*af_status)(); 162 int (*af_getaddr)(); 163 int af_difaddr; 164 int af_aifaddr; 165 caddr_t af_ridreq; 166 caddr_t af_addreq; 167 } afs[] = { 168 #define C(x) ((caddr_t) &x) 169 { "inet", AF_INET, in_status, in_getaddr, 170 SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) }, 171 { "ipx", AF_IPX, ipx_status, ipx_getaddr, 172 SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) }, 173 { "ns", AF_NS, xns_status, xns_getaddr, 174 SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) }, 175 { "iso", AF_ISO, iso_status, iso_getaddr, 176 SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) }, 177 { "ether", AF_INET, ether_status, NULL }, 178 { 0, 0, 0, 0 } 179 }; 180 181 struct afswtch *afp; /*the address family being set or asked about*/ 182 183 main(argc, argv) 184 int argc; 185 char *argv[]; 186 { 187 int af = AF_INET; 188 register struct afswtch *rafp; 189 190 if (argc < 2) { 191 fprintf(stderr, "usage: ifconfig interface\n%s%s%s%s%s%s", 192 "\t[ af [ address [ dest_addr ] ] [ up ] [ down ]", 193 "[ netmask mask ] ]\n", 194 "\t[ metric n ]\n", 195 "\t[ mtu n ]\n", 196 "\t[ arp | -arp ]\n", 197 "\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ] \n"); 198 exit(1); 199 } 200 argc--, argv++; 201 strncpy(name, *argv, sizeof(name)); 202 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 203 argc--, argv++; 204 if (argc > 0) { 205 for (afp = rafp = afs; rafp->af_name; rafp++) 206 if (strcmp(rafp->af_name, *argv) == 0) { 207 afp = rafp; argc--; argv++; 208 break; 209 } 210 rafp = afp; 211 af = ifr.ifr_addr.sa_family = rafp->af_af; 212 } 213 s = socket(af, SOCK_DGRAM, 0); 214 if (s < 0) { 215 perror("ifconfig: socket"); 216 exit(1); 217 } 218 if (strstr(name, "-a")) { 219 struct ifconf ifc; 220 #define MAX_INTERFACES 50 /* Yeah right. */ 221 char buffer[MAX_INTERFACES * sizeof(struct ifreq)]; 222 struct ifreq *ifptr, *end; 223 int ifflags, selectflag = -1; 224 225 if (strstr(name, "-au")) 226 selectflag = 1; 227 if (strstr(name, "-ad")) 228 selectflag = 0; 229 ifc.ifc_len = sizeof(buffer); 230 ifc.ifc_buf = buffer; 231 if (ioctl(s, SIOCGIFCONF, (char *) &ifc) < 0) { 232 perror("ifconfig (SIOCGIFCONF)"); 233 exit (1); 234 } 235 ifflags = ifc.ifc_req->ifr_flags; 236 end = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); 237 ifptr = ifc.ifc_req; 238 while (ifptr < end) { 239 sprintf(ifr.ifr_name,"%s",ifptr->ifr_name); 240 sprintf(name,"%s",ifptr->ifr_name); 241 close(s); 242 if ((s = socket(af, SOCK_DGRAM, 0)) < 0) { 243 perror("ifconfig: socket"); 244 exit(1); 245 } 246 if (ifptr->ifr_flags == ifflags) 247 ifconfig(argc,argv,af,rafp,selectflag); 248 if(ifptr->ifr_addr.sa_len) /* Dohw! */ 249 ifptr = (struct ifreq *) ((caddr_t) ifptr + 250 ifptr->ifr_addr.sa_len - 251 sizeof(struct sockaddr)); 252 ifptr++; 253 } 254 } else 255 ifconfig(argc,argv,af,rafp, -1); 256 257 exit (0); 258 } 259 260 261 262 ifconfig(argc,argv,af,rafp,flag) 263 int argc; 264 char *argv[]; 265 int af; 266 struct afswtch *rafp; 267 int flag; 268 { 269 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) { 270 Perror("ioctl (SIOCGIFFLAGS)"); 271 exit(1); 272 } 273 274 switch(flag) { 275 case 0: 276 if (ifr.ifr_flags & IFF_UP) 277 return(0); 278 break; 279 case 1: 280 if (!(ifr.ifr_flags & IFF_UP)) 281 return(0); 282 break; 283 case -1: 284 default: 285 break; 286 } 287 288 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 289 flags = ifr.ifr_flags; 290 if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0) 291 perror("ioctl (SIOCGIFMETRIC)"); 292 else 293 metric = ifr.ifr_metric; 294 if (ioctl(s, SIOCGIFMTU, (caddr_t)&ifr) < 0) 295 perror("ioctl (SIOCGIFMTU)"); 296 else 297 mtu = ifr.ifr_mtu; 298 if (argc == 0) { 299 status(); 300 return(0); 301 } 302 while (argc > 0) { 303 register struct cmd *p; 304 305 for (p = cmds; p->c_name; p++) 306 if (strcmp(*argv, p->c_name) == 0) 307 break; 308 if (p->c_name == 0 && setaddr) 309 p++; /* got src, do dst */ 310 if (p->c_func) { 311 if (p->c_parameter == NEXTARG) { 312 if (argv[1] == NULL) 313 errx(1, "'%s' requires argument", 314 p->c_name); 315 (*p->c_func)(argv[1]); 316 argc--, argv++; 317 } else 318 (*p->c_func)(*argv, p->c_parameter); 319 } 320 argc--, argv++; 321 } 322 if (af == AF_ISO) 323 adjust_nsellength(); 324 if (setipdst && af==AF_IPX) { 325 struct ipxip_req rq; 326 int size = sizeof(rq); 327 328 rq.rq_ipx = addreq.ifra_addr; 329 rq.rq_ip = addreq.ifra_dstaddr; 330 331 if (setsockopt(s, 0, SO_IPXIP_ROUTE, &rq, size) < 0) 332 Perror("Encapsulation Routing"); 333 } 334 if (setipdst && af==AF_NS) { 335 struct nsip_req rq; 336 int size = sizeof(rq); 337 338 rq.rq_ns = addreq.ifra_addr; 339 rq.rq_ip = addreq.ifra_dstaddr; 340 341 if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0) 342 Perror("Encapsulation Routing"); 343 } 344 if (clearaddr) { 345 int ret; 346 strncpy(rafp->af_ridreq, name, sizeof ifr.ifr_name); 347 if ((ret = ioctl(s, rafp->af_difaddr, rafp->af_ridreq)) < 0) { 348 if (errno == EADDRNOTAVAIL && (doalias >= 0)) { 349 /* means no previous address for interface */ 350 } else 351 Perror("ioctl (SIOCDIFADDR)"); 352 } 353 } 354 if (newaddr) { 355 strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name); 356 if (ioctl(s, rafp->af_aifaddr, rafp->af_addreq) < 0) 357 Perror("ioctl (SIOCAIFADDR)"); 358 } 359 return(0); 360 } 361 #define RIDADDR 0 362 #define ADDR 1 363 #define MASK 2 364 #define DSTADDR 3 365 366 /*ARGSUSED*/ 367 setifaddr(addr, param) 368 char *addr; 369 short param; 370 { 371 /* 372 * Delay the ioctl to set the interface addr until flags are all set. 373 * The address interpretation may depend on the flags, 374 * and the flags may change when the address is set. 375 */ 376 setaddr++; 377 if (doalias == 0) 378 clearaddr = 1; 379 (*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR)); 380 } 381 382 setifnetmask(addr) 383 char *addr; 384 { 385 (*afp->af_getaddr)(addr, MASK); 386 } 387 388 setifbroadaddr(addr) 389 char *addr; 390 { 391 (*afp->af_getaddr)(addr, DSTADDR); 392 } 393 394 setifipdst(addr) 395 char *addr; 396 { 397 in_getaddr(addr, DSTADDR); 398 setipdst++; 399 clearaddr = 0; 400 newaddr = 0; 401 } 402 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) 403 /*ARGSUSED*/ 404 notealias(addr, param) 405 char *addr; 406 { 407 if (setaddr && doalias == 0 && param < 0) 408 bcopy((caddr_t)rqtosa(af_addreq), 409 (caddr_t)rqtosa(af_ridreq), 410 rqtosa(af_addreq)->sa_len); 411 doalias = param; 412 if (param < 0) { 413 clearaddr = 1; 414 newaddr = 0; 415 } else 416 clearaddr = 0; 417 } 418 419 /*ARGSUSED*/ 420 notrailers(vname, value) 421 char *vname; 422 int value; 423 { 424 printf("Note: trailers are no longer sent, but always received\n"); 425 } 426 427 /*ARGSUSED*/ 428 setifdstaddr(addr, param) 429 char *addr; 430 int param; 431 { 432 (*afp->af_getaddr)(addr, DSTADDR); 433 } 434 435 setifflags(vname, value) 436 char *vname; 437 short value; 438 { 439 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) { 440 Perror("ioctl (SIOCGIFFLAGS)"); 441 exit(1); 442 } 443 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 444 flags = ifr.ifr_flags; 445 446 if (value < 0) { 447 value = -value; 448 flags &= ~value; 449 } else 450 flags |= value; 451 ifr.ifr_flags = flags; 452 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) 453 Perror(vname); 454 } 455 456 setifmetric(val) 457 char *val; 458 { 459 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 460 ifr.ifr_metric = atoi(val); 461 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) 462 perror("ioctl (set metric)"); 463 } 464 465 setifmtu(val) 466 char *val; 467 { 468 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 469 ifr.ifr_mtu = atoi(val); 470 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) 471 perror("ioctl (set mtu)"); 472 } 473 474 setsnpaoffset(val) 475 char *val; 476 { 477 iso_addreq.ifra_snpaoffset = atoi(val); 478 } 479 480 #define IFFBITS \ 481 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\ 482 \11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2\20MULTICAST" 483 484 /* 485 * Print the status of the interface. If an address family was 486 * specified, show it and it only; otherwise, show them all. 487 */ 488 status() 489 { 490 register struct afswtch *p = afp; 491 short af = ifr.ifr_addr.sa_family; 492 493 printf("%s: ", name); 494 printb("flags", flags, IFFBITS); 495 if (metric) 496 printf(" metric %d", metric); 497 if (mtu) 498 printf(" mtu %d", mtu); 499 putchar('\n'); 500 if ((p = afp) != NULL) { 501 (*p->af_status)(1); 502 } else for (p = afs; p->af_name; p++) { 503 ifr.ifr_addr.sa_family = p->af_af; 504 (*p->af_status)(0); 505 } 506 } 507 508 in_status(force) 509 int force; 510 { 511 struct sockaddr_in *sin; 512 char *inet_ntoa(); 513 514 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 515 if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { 516 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { 517 if (!force) 518 return; 519 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 520 } else 521 perror("ioctl (SIOCGIFADDR)"); 522 } 523 sin = (struct sockaddr_in *)&ifr.ifr_addr; 524 printf("\tinet %s ", inet_ntoa(sin->sin_addr)); 525 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 526 if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) { 527 if (errno != EADDRNOTAVAIL) 528 perror("ioctl (SIOCGIFNETMASK)"); 529 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 530 } else 531 netmask.sin_addr = 532 ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr; 533 if (flags & IFF_POINTOPOINT) { 534 if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { 535 if (errno == EADDRNOTAVAIL) 536 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 537 else 538 perror("ioctl (SIOCGIFDSTADDR)"); 539 } 540 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 541 sin = (struct sockaddr_in *)&ifr.ifr_dstaddr; 542 printf("--> %s ", inet_ntoa(sin->sin_addr)); 543 } 544 printf("netmask 0x%x ", ntohl(netmask.sin_addr.s_addr)); 545 if (flags & IFF_BROADCAST) { 546 if (ioctl(s, SIOCGIFBRDADDR, (caddr_t)&ifr) < 0) { 547 if (errno == EADDRNOTAVAIL) 548 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 549 else 550 perror("ioctl (SIOCGIFADDR)"); 551 } 552 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 553 sin = (struct sockaddr_in *)&ifr.ifr_addr; 554 if (sin->sin_addr.s_addr != 0) 555 printf("broadcast %s", inet_ntoa(sin->sin_addr)); 556 } 557 putchar('\n'); 558 } 559 560 ipx_status(force) 561 int force; 562 { 563 struct sockaddr_ipx *sipx; 564 565 close(s); 566 s = socket(AF_IPX, SOCK_DGRAM, 0); 567 if (s < 0) { 568 if (errno == EPROTONOSUPPORT) 569 return; 570 perror("ifconfig: socket"); 571 exit(1); 572 } 573 if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { 574 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { 575 if (!force) 576 return; 577 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 578 } else 579 perror("ioctl (SIOCGIFADDR)"); 580 } 581 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 582 sipx = (struct sockaddr_ipx *)&ifr.ifr_addr; 583 printf("\tipx %s ", ipx_ntoa(sipx->sipx_addr)); 584 if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */ 585 if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { 586 if (errno == EADDRNOTAVAIL) 587 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 588 else 589 Perror("ioctl (SIOCGIFDSTADDR)"); 590 } 591 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 592 sipx = (struct sockaddr_ipx *)&ifr.ifr_dstaddr; 593 printf("--> %s ", ipx_ntoa(sipx->sipx_addr)); 594 } 595 putchar('\n'); 596 } 597 598 xns_status(force) 599 int force; 600 { 601 struct sockaddr_ns *sns; 602 603 close(s); 604 s = socket(AF_NS, SOCK_DGRAM, 0); 605 if (s < 0) { 606 if (errno == EPROTONOSUPPORT) 607 return; 608 perror("ifconfig: socket"); 609 exit(1); 610 } 611 if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { 612 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { 613 if (!force) 614 return; 615 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 616 } else 617 perror("ioctl (SIOCGIFADDR)"); 618 } 619 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 620 sns = (struct sockaddr_ns *)&ifr.ifr_addr; 621 printf("\tns %s ", ns_ntoa(sns->sns_addr)); 622 if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */ 623 if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { 624 if (errno == EADDRNOTAVAIL) 625 bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 626 else 627 Perror("ioctl (SIOCGIFDSTADDR)"); 628 } 629 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 630 sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr; 631 printf("--> %s ", ns_ntoa(sns->sns_addr)); 632 } 633 putchar('\n'); 634 } 635 636 iso_status(force) 637 int force; 638 { 639 struct sockaddr_iso *siso; 640 struct iso_ifreq ifr; 641 642 close(s); 643 s = socket(AF_ISO, SOCK_DGRAM, 0); 644 if (s < 0) { 645 if (errno == EPROTONOSUPPORT) 646 return; 647 perror("ifconfig: socket"); 648 exit(1); 649 } 650 bzero((caddr_t)&ifr, sizeof(ifr)); 651 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 652 if (ioctl(s, SIOCGIFADDR_ISO, (caddr_t)&ifr) < 0) { 653 if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { 654 if (!force) 655 return; 656 bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr)); 657 } else { 658 perror("ioctl (SIOCGIFADDR_ISO)"); 659 exit(1); 660 } 661 } 662 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 663 siso = &ifr.ifr_Addr; 664 printf("\tiso %s ", iso_ntoa(&siso->siso_addr)); 665 if (ioctl(s, SIOCGIFNETMASK_ISO, (caddr_t)&ifr) < 0) { 666 if (errno != EADDRNOTAVAIL) 667 perror("ioctl (SIOCGIFNETMASK_ISO)"); 668 } else { 669 printf(" netmask %s ", iso_ntoa(&siso->siso_addr)); 670 } 671 if (flags & IFF_POINTOPOINT) { 672 if (ioctl(s, SIOCGIFDSTADDR_ISO, (caddr_t)&ifr) < 0) { 673 if (errno == EADDRNOTAVAIL) 674 bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr)); 675 else 676 Perror("ioctl (SIOCGIFDSTADDR_ISO)"); 677 } 678 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 679 siso = &ifr.ifr_Addr; 680 printf("--> %s ", iso_ntoa(&siso->siso_addr)); 681 } 682 putchar('\n'); 683 } 684 685 kread(addr, buf, size) 686 u_long addr; 687 char *buf; 688 int size; 689 { 690 691 if (kvm_read(kvmd, addr, buf, size) != size) 692 return (-1); 693 return (0); 694 } 695 696 /* Unashamedly stolen from netstat -- maybe someday we can us sysctl() */ 697 ether_status() 698 { 699 struct nlist nl[] = { { "_ifnet" } , "" }; 700 u_long addr, addr2; 701 struct ifnet ifnet; 702 union { 703 struct ifaddr ifa; 704 struct in_ifaddr in; 705 struct ns_ifaddr ns; 706 struct iso_ifaddr iso; 707 } ifaddr; 708 char *cp; 709 struct sockaddr *sa; 710 struct sockaddr_dl *sdl; 711 int n,m; 712 char ifacename[IFNAMSIZ]; 713 714 /* 715 * If we fail here it probably means we don't have permission to 716 * read /dev/kmem. Best to just silently bail out. If we have 717 * an error *after* we succeed in opening /dev/kmem, then we 718 * should report it. 719 */ 720 if ((kvmd = kvm_open(NULL,NULL,NULL,O_RDONLY,NULL)) == NULL) 721 return; 722 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 723 perror("ifconfig: kvm_nlist()"); 724 return; 725 } 726 if (kread(nl[0].n_value, (char *)&addr, sizeof(addr))) { 727 perror("_ifnet"); 728 return; 729 } 730 addr2 = 0; 731 while (addr || addr2) { 732 if (addr2 == 0) { 733 if (kread(addr, (char *)&ifnet, sizeof ifnet) || 734 kread((u_long)ifnet.if_name, ifacename, IFNAMSIZ)){ 735 perror("ifconfig: kvm_read()"); 736 return; 737 } 738 addr = (u_long)ifnet.if_next; 739 addr2 = (u_long)ifnet.if_addrlist; 740 } 741 if (kread(addr2, (char *)&ifaddr, sizeof ifaddr)) { 742 addr2 = 0; 743 continue; 744 } 745 sprintf(ifacename,"%s%d",ifacename, ifnet.if_unit); 746 if (!strncmp(name, ifacename, strlen(name))) { 747 #define CP(x) ((char *)(x)) 748 cp = (CP(ifaddr.ifa.ifa_addr) - CP(addr2)) + 749 CP(&ifaddr); sa = (struct sockaddr *)cp; 750 if (sa->sa_family == AF_LINK) { 751 sdl = (struct sockaddr_dl *)sa; 752 cp = (char *)LLADDR(sdl); 753 if ((n = sdl->sdl_alen) > 0) { 754 printf ("\tether "); 755 while (--n >= 0) 756 m += printf("%02x%c", 757 *cp++ & 0xff, 758 n > 0 ? ':' : ' '); 759 putchar('\n'); 760 } 761 break; 762 } 763 } 764 addr2 = (u_long)ifaddr.ifa.ifa_next; 765 } 766 kvm_close(kvmd); 767 } 768 769 Perror(cmd) 770 char *cmd; 771 { 772 extern int errno; 773 774 switch (errno) { 775 776 case ENXIO: 777 errx(1, "%s: no such interface", cmd); 778 break; 779 780 case EPERM: 781 errx(1, "%s: permission denied", cmd); 782 break; 783 784 default: 785 err(1, "%s", cmd); 786 } 787 } 788 789 struct in_addr inet_makeaddr(); 790 791 #define SIN(x) ((struct sockaddr_in *) &(x)) 792 struct sockaddr_in *sintab[] = { 793 SIN(ridreq.ifr_addr), SIN(addreq.ifra_addr), 794 SIN(addreq.ifra_mask), SIN(addreq.ifra_broadaddr)}; 795 796 in_getaddr(s, which) 797 char *s; 798 { 799 register struct sockaddr_in *sin = sintab[which]; 800 struct hostent *hp; 801 struct netent *np; 802 int val; 803 804 sin->sin_len = sizeof(*sin); 805 if (which != MASK) 806 sin->sin_family = AF_INET; 807 808 if (inet_aton(s, &sin->sin_addr)) 809 ; 810 else if (hp = gethostbyname(s)) 811 bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length); 812 else if (np = getnetbyname(s)) 813 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); 814 else 815 errx(1, "%s: bad value", s); 816 } 817 818 /* 819 * Print a value a la the %b format of the kernel's printf 820 */ 821 printb(s, v, bits) 822 char *s; 823 register char *bits; 824 register unsigned short v; 825 { 826 register int i, any = 0; 827 register char c; 828 829 if (bits && *bits == 8) 830 printf("%s=%o", s, v); 831 else 832 printf("%s=%x", s, v); 833 bits++; 834 if (bits) { 835 putchar('<'); 836 while (i = *bits++) { 837 if (v & (1 << (i-1))) { 838 if (any) 839 putchar(','); 840 any = 1; 841 for (; (c = *bits) > 32; bits++) 842 putchar(c); 843 } else 844 for (; *bits > 32; bits++) 845 ; 846 } 847 putchar('>'); 848 } 849 } 850 851 #define SIPX(x) ((struct sockaddr_ipx *) &(x)) 852 struct sockaddr_ipx *sipxtab[] = { 853 SIPX(ridreq.ifr_addr), SIPX(addreq.ifra_addr), 854 SIPX(addreq.ifra_mask), SIPX(addreq.ifra_broadaddr)}; 855 856 ipx_getaddr(addr, which) 857 char *addr; 858 { 859 struct sockaddr_ipx *sipx = sipxtab[which]; 860 struct ipx_addr ipx_addr(); 861 862 sipx->sipx_family = AF_IPX; 863 sipx->sipx_len = sizeof(*sipx); 864 sipx->sipx_addr = ipx_addr(addr); 865 if (which == MASK) 866 printf("Attempt to set IPX netmask will be ineffectual\n"); 867 } 868 869 #define SNS(x) ((struct sockaddr_ns *) &(x)) 870 struct sockaddr_ns *snstab[] = { 871 SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr), 872 SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)}; 873 874 xns_getaddr(addr, which) 875 char *addr; 876 { 877 struct sockaddr_ns *sns = snstab[which]; 878 struct ns_addr ns_addr(); 879 880 sns->sns_family = AF_NS; 881 sns->sns_len = sizeof(*sns); 882 sns->sns_addr = ns_addr(addr); 883 if (which == MASK) 884 printf("Attempt to set XNS netmask will be ineffectual\n"); 885 } 886 887 #define SISO(x) ((struct sockaddr_iso *) &(x)) 888 struct sockaddr_iso *sisotab[] = { 889 SISO(iso_ridreq.ifr_Addr), SISO(iso_addreq.ifra_addr), 890 SISO(iso_addreq.ifra_mask), SISO(iso_addreq.ifra_dstaddr)}; 891 892 iso_getaddr(addr, which) 893 char *addr; 894 { 895 register struct sockaddr_iso *siso = sisotab[which]; 896 struct iso_addr *iso_addr(); 897 siso->siso_addr = *iso_addr(addr); 898 899 if (which == MASK) { 900 siso->siso_len = TSEL(siso) - (caddr_t)(siso); 901 siso->siso_nlen = 0; 902 } else { 903 siso->siso_len = sizeof(*siso); 904 siso->siso_family = AF_ISO; 905 } 906 } 907 908 setnsellength(val) 909 char *val; 910 { 911 nsellength = atoi(val); 912 if (nsellength < 0) 913 errx(1, "Negative NSEL length is absurd"); 914 if (afp == 0 || afp->af_af != AF_ISO) 915 errx(1, "Setting NSEL length valid only for iso"); 916 } 917 918 fixnsel(s) 919 register struct sockaddr_iso *s; 920 { 921 if (s->siso_family == 0) 922 return; 923 s->siso_tlen = nsellength; 924 } 925 926 adjust_nsellength() 927 { 928 fixnsel(sisotab[RIDADDR]); 929 fixnsel(sisotab[ADDR]); 930 fixnsel(sisotab[DSTADDR]); 931 } 932