1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1983, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; 41 #endif 42 static const char rcsid[] = 43 "$FreeBSD$"; 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/ioctl.h> 48 #include <sys/module.h> 49 #include <sys/linker.h> 50 #include <sys/queue.h> 51 #include <sys/socket.h> 52 #include <sys/time.h> 53 54 #include <net/ethernet.h> 55 #include <net/if.h> 56 #include <net/if_dl.h> 57 #include <net/if_types.h> 58 #include <net/route.h> 59 60 /* IP */ 61 #include <netinet/in.h> 62 #include <netinet/in_var.h> 63 #include <arpa/inet.h> 64 #include <netdb.h> 65 66 #include <fnmatch.h> 67 #include <ifaddrs.h> 68 #include <ctype.h> 69 #include <err.h> 70 #include <errno.h> 71 #include <fcntl.h> 72 #ifdef JAIL 73 #include <jail.h> 74 #endif 75 #include <stdbool.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <unistd.h> 80 81 #include "ifconfig.h" 82 83 /* 84 * Since "struct ifreq" is composed of various union members, callers 85 * should pay special attention to interpret the value. 86 * (.e.g. little/big endian difference in the structure.) 87 */ 88 struct ifreq ifr; 89 90 char name[IFNAMSIZ]; 91 char *descr = NULL; 92 size_t descrlen = 64; 93 int setaddr; 94 int setmask; 95 int doalias; 96 int clearaddr; 97 int newaddr = 1; 98 int verbose; 99 int noload; 100 int printifname = 0; 101 102 int supmedia = 0; 103 int printkeys = 0; /* Print keying material for interfaces. */ 104 int exit_code = 0; 105 106 /* Formatter Strings */ 107 char *f_inet, *f_inet6, *f_ether, *f_addr; 108 109 static bool group_member(const char *ifname, const char *match, 110 const char *nomatch); 111 static int ifconfig(int argc, char *const *argv, int iscreate, 112 const struct afswtch *afp); 113 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 114 struct ifaddrs *ifa); 115 static void tunnel_status(int s); 116 static _Noreturn void usage(void); 117 118 static int getifflags(const char *ifname, int us); 119 120 static struct afswtch *af_getbyname(const char *name); 121 static struct afswtch *af_getbyfamily(int af); 122 static void af_other_status(int); 123 124 void printifnamemaybe(void); 125 126 static struct option *opts = NULL; 127 128 struct ifa_order_elt { 129 int if_order; 130 int af_orders[255]; 131 struct ifaddrs *ifa; 132 TAILQ_ENTRY(ifa_order_elt) link; 133 }; 134 135 TAILQ_HEAD(ifa_queue, ifa_order_elt); 136 137 static struct module_map_entry { 138 const char *ifname; 139 const char *kldname; 140 } module_map[] = { 141 { 142 .ifname = "tun", 143 .kldname = "if_tuntap", 144 }, 145 { 146 .ifname = "tap", 147 .kldname = "if_tuntap", 148 }, 149 { 150 .ifname = "vmnet", 151 .kldname = "if_tuntap", 152 }, 153 { 154 .ifname = "ipsec", 155 .kldname = "ipsec", 156 }, 157 { 158 /* 159 * This mapping exists because there is a conflicting enc module 160 * in CAM. ifconfig's guessing behavior will attempt to match 161 * the ifname to a module as well as if_${ifname} and clash with 162 * CAM enc. This is an assertion of the correct module to load. 163 */ 164 .ifname = "enc", 165 .kldname = "if_enc", 166 }, 167 }; 168 169 170 void 171 opt_register(struct option *p) 172 { 173 p->next = opts; 174 opts = p; 175 } 176 177 static void 178 usage(void) 179 { 180 char options[1024]; 181 struct option *p; 182 183 /* XXX not right but close enough for now */ 184 options[0] = '\0'; 185 for (p = opts; p != NULL; p = p->next) { 186 strlcat(options, p->opt_usage, sizeof(options)); 187 strlcat(options, " ", sizeof(options)); 188 } 189 190 fprintf(stderr, 191 "usage: ifconfig [-f type:format] %sinterface address_family\n" 192 " [address [dest_address]] [parameters]\n" 193 " ifconfig interface create\n" 194 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n" 195 " ifconfig -l [-d] [-u] [address_family]\n" 196 " ifconfig %s[-d] [-m] [-u] [-v]\n", 197 options, options, options); 198 exit(1); 199 } 200 201 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0]) 202 203 static int 204 calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 205 { 206 struct ifaddrs *prev; 207 struct ifa_order_elt *cur; 208 unsigned int ord, af, ifa_ord; 209 210 prev = NULL; 211 cur = NULL; 212 ord = 0; 213 ifa_ord = 0; 214 215 while (ifa != NULL) { 216 if (prev == NULL || 217 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 218 cur = calloc(1, sizeof(*cur)); 219 220 if (cur == NULL) 221 return (-1); 222 223 TAILQ_INSERT_TAIL(q, cur, link); 224 cur->if_order = ifa_ord ++; 225 cur->ifa = ifa; 226 ord = 0; 227 } 228 229 if (ifa->ifa_addr) { 230 af = ifa->ifa_addr->sa_family; 231 232 if (af < ORDERS_SIZE(cur->af_orders) && 233 cur->af_orders[af] == 0) 234 cur->af_orders[af] = ++ord; 235 } 236 prev = ifa; 237 ifa = ifa->ifa_next; 238 } 239 240 return (0); 241 } 242 243 static int 244 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 245 { 246 struct ifa_order_elt *cur, *e1, *e2; 247 unsigned int af1, af2; 248 int ret; 249 250 e1 = e2 = NULL; 251 252 ret = strcmp(a->ifa_name, b->ifa_name); 253 if (ret != 0) { 254 TAILQ_FOREACH(cur, q, link) { 255 if (e1 && e2) 256 break; 257 258 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 259 e1 = cur; 260 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 261 e2 = cur; 262 } 263 264 if (!e1 || !e2) 265 return (0); 266 else 267 return (e1->if_order - e2->if_order); 268 269 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 270 TAILQ_FOREACH(cur, q, link) { 271 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 272 e1 = cur; 273 break; 274 } 275 } 276 277 if (!e1) 278 return (0); 279 280 af1 = a->ifa_addr->sa_family; 281 af2 = b->ifa_addr->sa_family; 282 283 if (af1 < ORDERS_SIZE(e1->af_orders) && 284 af2 < ORDERS_SIZE(e1->af_orders)) 285 return (e1->af_orders[af1] - e1->af_orders[af2]); 286 } 287 288 return (0); 289 } 290 291 static void freeformat(void) 292 { 293 294 if (f_inet != NULL) 295 free(f_inet); 296 if (f_inet6 != NULL) 297 free(f_inet6); 298 if (f_ether != NULL) 299 free(f_ether); 300 if (f_addr != NULL) 301 free(f_addr); 302 } 303 304 static void setformat(char *input) 305 { 306 char *formatstr, *category, *modifier; 307 308 formatstr = strdup(input); 309 while ((category = strsep(&formatstr, ",")) != NULL) { 310 modifier = strchr(category, ':'); 311 if (modifier == NULL || modifier[1] == '\0') { 312 warnx("Skipping invalid format specification: %s\n", 313 category); 314 continue; 315 } 316 317 /* Split the string on the separator, then seek past it */ 318 modifier[0] = '\0'; 319 modifier++; 320 321 if (strcmp(category, "addr") == 0) 322 f_addr = strdup(modifier); 323 else if (strcmp(category, "ether") == 0) 324 f_ether = strdup(modifier); 325 else if (strcmp(category, "inet") == 0) 326 f_inet = strdup(modifier); 327 else if (strcmp(category, "inet6") == 0) 328 f_inet6 = strdup(modifier); 329 } 330 free(formatstr); 331 } 332 333 #undef ORDERS_SIZE 334 335 static struct ifaddrs * 336 sortifaddrs(struct ifaddrs *list, 337 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 338 struct ifa_queue *q) 339 { 340 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 341 342 right = list; 343 temp = list; 344 last = list; 345 result = NULL; 346 next = NULL; 347 tail = NULL; 348 349 if (!list || !list->ifa_next) 350 return (list); 351 352 while (temp && temp->ifa_next) { 353 last = right; 354 right = right->ifa_next; 355 temp = temp->ifa_next->ifa_next; 356 } 357 358 last->ifa_next = NULL; 359 360 list = sortifaddrs(list, compare, q); 361 right = sortifaddrs(right, compare, q); 362 363 while (list || right) { 364 365 if (!right) { 366 next = list; 367 list = list->ifa_next; 368 } else if (!list) { 369 next = right; 370 right = right->ifa_next; 371 } else if (compare(list, right, q) <= 0) { 372 next = list; 373 list = list->ifa_next; 374 } else { 375 next = right; 376 right = right->ifa_next; 377 } 378 379 if (!result) 380 result = next; 381 else 382 tail->ifa_next = next; 383 384 tail = next; 385 } 386 387 return (result); 388 } 389 390 void printifnamemaybe() 391 { 392 if (printifname) 393 printf("%s\n", name); 394 } 395 396 int 397 main(int argc, char *argv[]) 398 { 399 int c, all, namesonly, downonly, uponly; 400 const struct afswtch *afp = NULL; 401 int ifindex; 402 struct ifaddrs *ifap, *sifap, *ifa; 403 struct ifreq paifr; 404 const struct sockaddr_dl *sdl; 405 char options[1024], *cp, *envformat, *namecp = NULL; 406 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 407 struct ifa_order_elt *cur, *tmp; 408 const char *ifname, *matchgroup, *nogroup; 409 struct option *p; 410 size_t iflen; 411 int flags; 412 413 all = downonly = uponly = namesonly = noload = verbose = 0; 414 f_inet = f_inet6 = f_ether = f_addr = NULL; 415 matchgroup = nogroup = NULL; 416 417 envformat = getenv("IFCONFIG_FORMAT"); 418 if (envformat != NULL) 419 setformat(envformat); 420 421 /* 422 * Ensure we print interface name when expected to, 423 * even if we terminate early due to error. 424 */ 425 atexit(printifnamemaybe); 426 427 /* Parse leading line options */ 428 strlcpy(options, "G:adf:klmnuv", sizeof(options)); 429 for (p = opts; p != NULL; p = p->next) 430 strlcat(options, p->opt, sizeof(options)); 431 while ((c = getopt(argc, argv, options)) != -1) { 432 switch (c) { 433 case 'a': /* scan all interfaces */ 434 all++; 435 break; 436 case 'd': /* restrict scan to "down" interfaces */ 437 downonly++; 438 break; 439 case 'f': 440 if (optarg == NULL) 441 usage(); 442 setformat(optarg); 443 break; 444 case 'G': 445 if (optarg == NULL || all == 0) 446 usage(); 447 nogroup = optarg; 448 break; 449 case 'k': 450 printkeys++; 451 break; 452 case 'l': /* scan interface names only */ 453 namesonly++; 454 break; 455 case 'm': /* show media choices in status */ 456 supmedia = 1; 457 break; 458 case 'n': /* suppress module loading */ 459 noload++; 460 break; 461 case 'u': /* restrict scan to "up" interfaces */ 462 uponly++; 463 break; 464 case 'v': 465 verbose++; 466 break; 467 case 'g': 468 if (all) { 469 if (optarg == NULL) 470 usage(); 471 matchgroup = optarg; 472 break; 473 } 474 /* FALLTHROUGH */ 475 default: 476 for (p = opts; p != NULL; p = p->next) 477 if (p->opt[0] == c) { 478 p->cb(optarg); 479 break; 480 } 481 if (p == NULL) 482 usage(); 483 break; 484 } 485 } 486 argc -= optind; 487 argv += optind; 488 489 /* -l cannot be used with -a or -m */ 490 if (namesonly && (all || supmedia)) 491 usage(); 492 493 /* nonsense.. */ 494 if (uponly && downonly) 495 usage(); 496 497 /* no arguments is equivalent to '-a' */ 498 if (!namesonly && argc < 1) 499 all = 1; 500 501 /* -a and -l allow an address family arg to limit the output */ 502 if (all || namesonly) { 503 if (argc > 1) 504 usage(); 505 506 ifname = NULL; 507 ifindex = 0; 508 if (argc == 1) { 509 afp = af_getbyname(*argv); 510 if (afp == NULL) { 511 warnx("Address family '%s' unknown.", *argv); 512 usage(); 513 } 514 if (afp->af_name != NULL) 515 argc--, argv++; 516 /* leave with afp non-zero */ 517 } 518 } else { 519 /* not listing, need an argument */ 520 if (argc < 1) 521 usage(); 522 523 ifname = *argv; 524 argc--, argv++; 525 526 /* check and maybe load support for this interface */ 527 ifmaybeload(ifname); 528 529 ifindex = if_nametoindex(ifname); 530 if (ifindex == 0) { 531 /* 532 * NOTE: We must special-case the `create' command 533 * right here as we would otherwise fail when trying 534 * to find the interface. 535 */ 536 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 537 strcmp(argv[0], "plumb") == 0)) { 538 iflen = strlcpy(name, ifname, sizeof(name)); 539 if (iflen >= sizeof(name)) 540 errx(1, "%s: cloning name too long", 541 ifname); 542 ifconfig(argc, argv, 1, NULL); 543 exit(exit_code); 544 } 545 #ifdef JAIL 546 /* 547 * NOTE: We have to special-case the `-vnet' command 548 * right here as we would otherwise fail when trying 549 * to find the interface as it lives in another vnet. 550 */ 551 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) { 552 iflen = strlcpy(name, ifname, sizeof(name)); 553 if (iflen >= sizeof(name)) 554 errx(1, "%s: interface name too long", 555 ifname); 556 ifconfig(argc, argv, 0, NULL); 557 exit(exit_code); 558 } 559 #endif 560 errx(1, "interface %s does not exist", ifname); 561 } else { 562 /* 563 * Do not allow use `create` command as hostname if 564 * address family is not specified. 565 */ 566 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 567 strcmp(argv[0], "plumb") == 0)) { 568 if (argc == 1) 569 errx(1, "interface %s already exists", 570 ifname); 571 argc--, argv++; 572 } 573 } 574 } 575 576 /* Check for address family */ 577 if (argc > 0) { 578 afp = af_getbyname(*argv); 579 if (afp != NULL) 580 argc--, argv++; 581 } 582 583 /* 584 * Check for a requested configuration action on a single interface, 585 * which doesn't require building, sorting, and searching the entire 586 * system address list 587 */ 588 if ((argc > 0) && (ifname != NULL)) { 589 iflen = strlcpy(name, ifname, sizeof(name)); 590 if (iflen >= sizeof(name)) { 591 warnx("%s: interface name too long, skipping", ifname); 592 } else { 593 flags = getifflags(name, -1); 594 if (!(((flags & IFF_CANTCONFIG) != 0) || 595 (downonly && (flags & IFF_UP) != 0) || 596 (uponly && (flags & IFF_UP) == 0))) 597 ifconfig(argc, argv, 0, afp); 598 } 599 goto done; 600 } 601 602 if (getifaddrs(&ifap) != 0) 603 err(EXIT_FAILURE, "getifaddrs"); 604 605 cp = NULL; 606 607 if (calcorders(ifap, &q) != 0) 608 err(EXIT_FAILURE, "calcorders"); 609 610 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 611 612 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 613 free(cur); 614 615 ifindex = 0; 616 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 617 memset(&paifr, 0, sizeof(paifr)); 618 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 619 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 620 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 621 ifa->ifa_addr->sa_len); 622 } 623 624 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0) 625 continue; 626 if (ifa->ifa_addr->sa_family == AF_LINK) 627 sdl = (const struct sockaddr_dl *) ifa->ifa_addr; 628 else 629 sdl = NULL; 630 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly) 631 continue; 632 iflen = strlcpy(name, ifa->ifa_name, sizeof(name)); 633 if (iflen >= sizeof(name)) { 634 warnx("%s: interface name too long, skipping", 635 ifa->ifa_name); 636 continue; 637 } 638 cp = ifa->ifa_name; 639 640 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0) 641 continue; 642 if (downonly && (ifa->ifa_flags & IFF_UP) != 0) 643 continue; 644 if (uponly && (ifa->ifa_flags & IFF_UP) == 0) 645 continue; 646 if (!group_member(ifa->ifa_name, matchgroup, nogroup)) 647 continue; 648 /* 649 * Are we just listing the interfaces? 650 */ 651 if (namesonly) { 652 if (namecp == cp) 653 continue; 654 if (afp != NULL) { 655 /* special case for "ether" address family */ 656 if (!strcmp(afp->af_name, "ether")) { 657 if (sdl == NULL || 658 (sdl->sdl_type != IFT_ETHER && 659 sdl->sdl_type != IFT_L2VLAN && 660 sdl->sdl_type != IFT_BRIDGE) || 661 sdl->sdl_alen != ETHER_ADDR_LEN) 662 continue; 663 } else { 664 if (ifa->ifa_addr->sa_family 665 != afp->af_af) 666 continue; 667 } 668 } 669 namecp = cp; 670 ifindex++; 671 if (ifindex > 1) 672 printf(" "); 673 fputs(name, stdout); 674 continue; 675 } 676 ifindex++; 677 678 if (argc > 0) 679 ifconfig(argc, argv, 0, afp); 680 else 681 status(afp, sdl, ifa); 682 } 683 if (namesonly) 684 printf("\n"); 685 freeifaddrs(ifap); 686 687 done: 688 freeformat(); 689 exit(exit_code); 690 } 691 692 /* 693 * Returns true if an interface should be listed because any its groups 694 * matches shell pattern "match" and none of groups matches pattern "nomatch". 695 * If any pattern is NULL, corresponding condition is skipped. 696 */ 697 static bool 698 group_member(const char *ifname, const char *match, const char *nomatch) 699 { 700 static int sock = -1; 701 702 struct ifgroupreq ifgr; 703 struct ifg_req *ifg; 704 int len; 705 bool matched, nomatched; 706 707 /* Sanity checks. */ 708 if (match == NULL && nomatch == NULL) 709 return (true); 710 if (ifname == NULL) 711 return (false); 712 713 memset(&ifgr, 0, sizeof(ifgr)); 714 strlcpy(ifgr.ifgr_name, ifname, IFNAMSIZ); 715 716 /* The socket is opened once. Let _exit() close it. */ 717 if (sock == -1) { 718 sock = socket(AF_LOCAL, SOCK_DGRAM, 0); 719 if (sock == -1) 720 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__); 721 } 722 723 /* Determine amount of memory for the list of groups. */ 724 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) { 725 if (errno == EINVAL || errno == ENOTTY) 726 return (false); 727 else 728 errx(1, "%s: SIOCGIFGROUP", __func__); 729 } 730 731 /* Obtain the list of groups. */ 732 len = ifgr.ifgr_len; 733 ifgr.ifgr_groups = 734 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg)); 735 736 if (ifgr.ifgr_groups == NULL) 737 errx(1, "%s: no memory", __func__); 738 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 739 errx(1, "%s: SIOCGIFGROUP", __func__); 740 741 /* Perform matching. */ 742 matched = false; 743 nomatched = true; 744 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) { 745 len -= sizeof(struct ifg_req); 746 if (match) 747 matched |= !fnmatch(match, ifg->ifgrq_group, 0); 748 if (nomatch) 749 nomatched &= fnmatch(nomatch, ifg->ifgrq_group, 0); 750 } 751 752 if (match && !nomatch) 753 return (matched); 754 if (!match && nomatch) 755 return (nomatched); 756 return (matched && nomatched); 757 } 758 759 static struct afswtch *afs = NULL; 760 761 void 762 af_register(struct afswtch *p) 763 { 764 p->af_next = afs; 765 afs = p; 766 } 767 768 static struct afswtch * 769 af_getbyname(const char *name) 770 { 771 struct afswtch *afp; 772 773 for (afp = afs; afp != NULL; afp = afp->af_next) 774 if (strcmp(afp->af_name, name) == 0) 775 return afp; 776 return NULL; 777 } 778 779 static struct afswtch * 780 af_getbyfamily(int af) 781 { 782 struct afswtch *afp; 783 784 for (afp = afs; afp != NULL; afp = afp->af_next) 785 if (afp->af_af == af) 786 return afp; 787 return NULL; 788 } 789 790 static void 791 af_other_status(int s) 792 { 793 struct afswtch *afp; 794 uint8_t afmask[howmany(AF_MAX, NBBY)]; 795 796 memset(afmask, 0, sizeof(afmask)); 797 for (afp = afs; afp != NULL; afp = afp->af_next) { 798 if (afp->af_other_status == NULL) 799 continue; 800 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 801 continue; 802 afp->af_other_status(s); 803 setbit(afmask, afp->af_af); 804 } 805 } 806 807 static void 808 af_all_tunnel_status(int s) 809 { 810 struct afswtch *afp; 811 uint8_t afmask[howmany(AF_MAX, NBBY)]; 812 813 memset(afmask, 0, sizeof(afmask)); 814 for (afp = afs; afp != NULL; afp = afp->af_next) { 815 if (afp->af_status_tunnel == NULL) 816 continue; 817 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 818 continue; 819 afp->af_status_tunnel(s); 820 setbit(afmask, afp->af_af); 821 } 822 } 823 824 static struct cmd *cmds = NULL; 825 826 void 827 cmd_register(struct cmd *p) 828 { 829 p->c_next = cmds; 830 cmds = p; 831 } 832 833 static const struct cmd * 834 cmd_lookup(const char *name, int iscreate) 835 { 836 const struct cmd *p; 837 838 for (p = cmds; p != NULL; p = p->c_next) 839 if (strcmp(name, p->c_name) == 0) { 840 if (iscreate) { 841 if (p->c_iscloneop) 842 return p; 843 } else { 844 if (!p->c_iscloneop) 845 return p; 846 } 847 } 848 return NULL; 849 } 850 851 struct callback { 852 callback_func *cb_func; 853 void *cb_arg; 854 struct callback *cb_next; 855 }; 856 static struct callback *callbacks = NULL; 857 858 void 859 callback_register(callback_func *func, void *arg) 860 { 861 struct callback *cb; 862 863 cb = malloc(sizeof(struct callback)); 864 if (cb == NULL) 865 errx(1, "unable to allocate memory for callback"); 866 cb->cb_func = func; 867 cb->cb_arg = arg; 868 cb->cb_next = callbacks; 869 callbacks = cb; 870 } 871 872 /* specially-handled commands */ 873 static void setifaddr(const char *, int, int, const struct afswtch *); 874 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 875 876 static void setifdstaddr(const char *, int, int, const struct afswtch *); 877 static const struct cmd setifdstaddr_cmd = 878 DEF_CMD("ifdstaddr", 0, setifdstaddr); 879 880 static int 881 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp) 882 { 883 const struct afswtch *afp, *nafp; 884 const struct cmd *p; 885 struct callback *cb; 886 int s; 887 888 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 889 afp = NULL; 890 if (uafp != NULL) 891 afp = uafp; 892 /* 893 * This is the historical "accident" allowing users to configure IPv4 894 * addresses without the "inet" keyword which while a nice feature has 895 * proven to complicate other things. We cannot remove this but only 896 * make sure we will never have a similar implicit default for IPv6 or 897 * any other address familiy. We need a fallback though for 898 * ifconfig IF up/down etc. to work without INET support as people 899 * never used ifconfig IF link up/down, etc. either. 900 */ 901 #ifndef RESCUE 902 #ifdef INET 903 if (afp == NULL && feature_present("inet")) 904 afp = af_getbyname("inet"); 905 #endif 906 #endif 907 if (afp == NULL) 908 afp = af_getbyname("link"); 909 if (afp == NULL) { 910 warnx("Please specify an address_family."); 911 usage(); 912 } 913 top: 914 ifr.ifr_addr.sa_family = 915 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 916 AF_LOCAL : afp->af_af; 917 918 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 919 (uafp != NULL || errno != EAFNOSUPPORT || 920 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 921 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 922 923 while (argc > 0) { 924 p = cmd_lookup(*argv, iscreate); 925 if (iscreate && p == NULL) { 926 /* 927 * Push the clone create callback so the new 928 * device is created and can be used for any 929 * remaining arguments. 930 */ 931 cb = callbacks; 932 if (cb == NULL) 933 errx(1, "internal error, no callback"); 934 callbacks = cb->cb_next; 935 cb->cb_func(s, cb->cb_arg); 936 iscreate = 0; 937 /* 938 * Handle any address family spec that 939 * immediately follows and potentially 940 * recreate the socket. 941 */ 942 nafp = af_getbyname(*argv); 943 if (nafp != NULL) { 944 argc--, argv++; 945 if (nafp != afp) { 946 close(s); 947 afp = nafp; 948 goto top; 949 } 950 } 951 /* 952 * Look for a normal parameter. 953 */ 954 continue; 955 } 956 if (p == NULL) { 957 /* 958 * Not a recognized command, choose between setting 959 * the interface address and the dst address. 960 */ 961 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 962 } 963 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 964 if (argv[1] == NULL) 965 errx(1, "'%s' requires argument", 966 p->c_name); 967 p->c_u.c_func(argv[1], 0, s, afp); 968 argc--, argv++; 969 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 970 p->c_u.c_func(argv[1], 0, s, afp); 971 if (argv[1] != NULL) 972 argc--, argv++; 973 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 974 if (argc < 3) 975 errx(1, "'%s' requires 2 arguments", 976 p->c_name); 977 p->c_u.c_func2(argv[1], argv[2], s, afp); 978 argc -= 2, argv += 2; 979 } else if (p->c_u.c_func) 980 p->c_u.c_func(*argv, p->c_parameter, s, afp); 981 argc--, argv++; 982 } 983 984 /* 985 * Do any post argument processing required by the address family. 986 */ 987 if (afp->af_postproc != NULL) 988 afp->af_postproc(s, afp); 989 /* 990 * Do deferred callbacks registered while processing 991 * command-line arguments. 992 */ 993 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 994 cb->cb_func(s, cb->cb_arg); 995 /* 996 * Do deferred operations. 997 */ 998 if (clearaddr) { 999 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) { 1000 warnx("interface %s cannot change %s addresses!", 1001 name, afp->af_name); 1002 clearaddr = 0; 1003 } 1004 } 1005 if (clearaddr) { 1006 int ret; 1007 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name, 1008 sizeof ifr.ifr_name); 1009 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq); 1010 if (ret < 0) { 1011 if (errno == EADDRNOTAVAIL && (doalias >= 0)) { 1012 /* means no previous address for interface */ 1013 } else 1014 Perror("ioctl (SIOCDIFADDR)"); 1015 } 1016 } 1017 if (newaddr) { 1018 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) { 1019 warnx("interface %s cannot change %s addresses!", 1020 name, afp->af_name); 1021 newaddr = 0; 1022 } 1023 } 1024 if (newaddr && (setaddr || setmask)) { 1025 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name, 1026 sizeof ifr.ifr_name); 1027 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0) 1028 Perror("ioctl (SIOCAIFADDR)"); 1029 } 1030 1031 close(s); 1032 return(0); 1033 } 1034 1035 /*ARGSUSED*/ 1036 static void 1037 setifaddr(const char *addr, int param, int s, const struct afswtch *afp) 1038 { 1039 if (afp->af_getaddr == NULL) 1040 return; 1041 /* 1042 * Delay the ioctl to set the interface addr until flags are all set. 1043 * The address interpretation may depend on the flags, 1044 * and the flags may change when the address is set. 1045 */ 1046 setaddr++; 1047 if (doalias == 0 && afp->af_af != AF_LINK) 1048 clearaddr = 1; 1049 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 1050 } 1051 1052 static void 1053 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp) 1054 { 1055 struct addrinfo *srcres, *dstres; 1056 int ecode; 1057 1058 if (afp->af_settunnel == NULL) { 1059 warn("address family %s does not support tunnel setup", 1060 afp->af_name); 1061 return; 1062 } 1063 1064 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 1065 errx(1, "error in parsing address string: %s", 1066 gai_strerror(ecode)); 1067 1068 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 1069 errx(1, "error in parsing address string: %s", 1070 gai_strerror(ecode)); 1071 1072 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 1073 errx(1, 1074 "source and destination address families do not match"); 1075 1076 afp->af_settunnel(s, srcres, dstres); 1077 1078 freeaddrinfo(srcres); 1079 freeaddrinfo(dstres); 1080 } 1081 1082 /* ARGSUSED */ 1083 static void 1084 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp) 1085 { 1086 1087 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0) 1088 err(1, "SIOCDIFPHYADDR"); 1089 } 1090 1091 #ifdef JAIL 1092 static void 1093 setifvnet(const char *jname, int dummy __unused, int s, 1094 const struct afswtch *afp) 1095 { 1096 struct ifreq my_ifr; 1097 1098 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1099 my_ifr.ifr_jid = jail_getid(jname); 1100 if (my_ifr.ifr_jid < 0) 1101 errx(1, "%s", jail_errmsg); 1102 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0) 1103 err(1, "SIOCSIFVNET"); 1104 } 1105 1106 static void 1107 setifrvnet(const char *jname, int dummy __unused, int s, 1108 const struct afswtch *afp) 1109 { 1110 struct ifreq my_ifr; 1111 1112 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1113 my_ifr.ifr_jid = jail_getid(jname); 1114 if (my_ifr.ifr_jid < 0) 1115 errx(1, "%s", jail_errmsg); 1116 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0) 1117 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name); 1118 } 1119 #endif 1120 1121 static void 1122 setifnetmask(const char *addr, int dummy __unused, int s, 1123 const struct afswtch *afp) 1124 { 1125 if (afp->af_getaddr != NULL) { 1126 setmask++; 1127 afp->af_getaddr(addr, MASK); 1128 } 1129 } 1130 1131 static void 1132 setifbroadaddr(const char *addr, int dummy __unused, int s, 1133 const struct afswtch *afp) 1134 { 1135 if (afp->af_getaddr != NULL) 1136 afp->af_getaddr(addr, DSTADDR); 1137 } 1138 1139 static void 1140 notealias(const char *addr, int param, int s, const struct afswtch *afp) 1141 { 1142 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) 1143 if (setaddr && doalias == 0 && param < 0) 1144 if (afp->af_addreq != NULL && afp->af_ridreq != NULL) 1145 bcopy((caddr_t)rqtosa(af_addreq), 1146 (caddr_t)rqtosa(af_ridreq), 1147 rqtosa(af_addreq)->sa_len); 1148 doalias = param; 1149 if (param < 0) { 1150 clearaddr = 1; 1151 newaddr = 0; 1152 } else 1153 clearaddr = 0; 1154 #undef rqtosa 1155 } 1156 1157 /*ARGSUSED*/ 1158 static void 1159 setifdstaddr(const char *addr, int param __unused, int s, 1160 const struct afswtch *afp) 1161 { 1162 if (afp->af_getaddr != NULL) 1163 afp->af_getaddr(addr, DSTADDR); 1164 } 1165 1166 static int 1167 getifflags(const char *ifname, int us) 1168 { 1169 struct ifreq my_ifr; 1170 int s; 1171 1172 memset(&my_ifr, 0, sizeof(my_ifr)); 1173 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1174 if (us < 0) { 1175 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1176 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1177 } else 1178 s = us; 1179 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1180 Perror("ioctl (SIOCGIFFLAGS)"); 1181 exit(1); 1182 } 1183 if (us < 0) 1184 close(s); 1185 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1186 } 1187 1188 /* 1189 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1190 * of the ifreq structure, which may confuse other parts of ifconfig. 1191 * Make a private copy so we can avoid that. 1192 */ 1193 static void 1194 setifflags(const char *vname, int value, int s, const struct afswtch *afp) 1195 { 1196 struct ifreq my_ifr; 1197 int flags; 1198 1199 flags = getifflags(name, s); 1200 if (value < 0) { 1201 value = -value; 1202 flags &= ~value; 1203 } else 1204 flags |= value; 1205 memset(&my_ifr, 0, sizeof(my_ifr)); 1206 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); 1207 my_ifr.ifr_flags = flags & 0xffff; 1208 my_ifr.ifr_flagshigh = flags >> 16; 1209 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1210 Perror(vname); 1211 } 1212 1213 void 1214 setifcap(const char *vname, int value, int s, const struct afswtch *afp) 1215 { 1216 int flags; 1217 1218 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) { 1219 Perror("ioctl (SIOCGIFCAP)"); 1220 exit(1); 1221 } 1222 flags = ifr.ifr_curcap; 1223 if (value < 0) { 1224 value = -value; 1225 flags &= ~value; 1226 } else 1227 flags |= value; 1228 flags &= ifr.ifr_reqcap; 1229 ifr.ifr_reqcap = flags; 1230 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0) 1231 Perror(vname); 1232 } 1233 1234 static void 1235 setifmetric(const char *val, int dummy __unused, int s, 1236 const struct afswtch *afp) 1237 { 1238 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1239 ifr.ifr_metric = atoi(val); 1240 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) 1241 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1242 } 1243 1244 static void 1245 setifmtu(const char *val, int dummy __unused, int s, 1246 const struct afswtch *afp) 1247 { 1248 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1249 ifr.ifr_mtu = atoi(val); 1250 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) 1251 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1252 } 1253 1254 static void 1255 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp) 1256 { 1257 u_long ul; 1258 char *endp; 1259 1260 ul = strtoul(val, &endp, 0); 1261 if (*endp != '\0') 1262 errx(1, "invalid value for pcp"); 1263 if (ul > 7) 1264 errx(1, "value for pcp out of range"); 1265 ifr.ifr_lan_pcp = ul; 1266 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1267 err(1, "SIOCSLANPCP"); 1268 } 1269 1270 static void 1271 disableifpcp(const char *val, int arg __unused, int s, 1272 const struct afswtch *afp) 1273 { 1274 1275 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1276 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1277 err(1, "SIOCSLANPCP"); 1278 } 1279 1280 static void 1281 setifname(const char *val, int dummy __unused, int s, 1282 const struct afswtch *afp) 1283 { 1284 char *newname; 1285 1286 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1287 1288 newname = strdup(val); 1289 if (newname == NULL) 1290 err(1, "no memory to set ifname"); 1291 ifr.ifr_data = newname; 1292 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1293 free(newname); 1294 err(1, "ioctl SIOCSIFNAME (set name)"); 1295 } 1296 printifname = 1; 1297 strlcpy(name, newname, sizeof(name)); 1298 free(newname); 1299 } 1300 1301 /* ARGSUSED */ 1302 static void 1303 setifdescr(const char *val, int dummy __unused, int s, 1304 const struct afswtch *afp) 1305 { 1306 char *newdescr; 1307 1308 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1309 1310 ifr.ifr_buffer.length = strlen(val) + 1; 1311 if (ifr.ifr_buffer.length == 1) { 1312 ifr.ifr_buffer.buffer = newdescr = NULL; 1313 ifr.ifr_buffer.length = 0; 1314 } else { 1315 newdescr = strdup(val); 1316 ifr.ifr_buffer.buffer = newdescr; 1317 if (newdescr == NULL) { 1318 warn("no memory to set ifdescr"); 1319 return; 1320 } 1321 } 1322 1323 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) 1324 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1325 1326 free(newdescr); 1327 } 1328 1329 /* ARGSUSED */ 1330 static void 1331 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp) 1332 { 1333 1334 setifdescr("", 0, s, 0); 1335 } 1336 1337 #define IFFBITS \ 1338 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1339 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1340 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP" 1341 1342 #define IFCAPBITS \ 1343 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1344 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1345 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1346 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" 1347 1348 /* 1349 * Print the status of the interface. If an address family was 1350 * specified, show only it; otherwise, show them all. 1351 */ 1352 static void 1353 status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 1354 struct ifaddrs *ifa) 1355 { 1356 struct ifaddrs *ift; 1357 int allfamilies, s; 1358 struct ifstat ifs; 1359 1360 if (afp == NULL) { 1361 allfamilies = 1; 1362 ifr.ifr_addr.sa_family = AF_LOCAL; 1363 } else { 1364 allfamilies = 0; 1365 ifr.ifr_addr.sa_family = 1366 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af; 1367 } 1368 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1369 1370 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1371 if (s < 0) 1372 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1373 1374 printf("%s: ", name); 1375 printb("flags", ifa->ifa_flags, IFFBITS); 1376 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1) 1377 printf(" metric %d", ifr.ifr_metric); 1378 if (ioctl(s, SIOCGIFMTU, &ifr) != -1) 1379 printf(" mtu %d", ifr.ifr_mtu); 1380 putchar('\n'); 1381 1382 for (;;) { 1383 if ((descr = reallocf(descr, descrlen)) != NULL) { 1384 ifr.ifr_buffer.buffer = descr; 1385 ifr.ifr_buffer.length = descrlen; 1386 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) { 1387 if (ifr.ifr_buffer.buffer == descr) { 1388 if (strlen(descr) > 0) 1389 printf("\tdescription: %s\n", 1390 descr); 1391 } else if (ifr.ifr_buffer.length > descrlen) { 1392 descrlen = ifr.ifr_buffer.length; 1393 continue; 1394 } 1395 } 1396 } else 1397 warn("unable to allocate memory for interface" 1398 "description"); 1399 break; 1400 } 1401 1402 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) { 1403 if (ifr.ifr_curcap != 0) { 1404 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1405 putchar('\n'); 1406 } 1407 if (supmedia && ifr.ifr_reqcap != 0) { 1408 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS); 1409 putchar('\n'); 1410 } 1411 } 1412 1413 tunnel_status(s); 1414 1415 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1416 if (ift->ifa_addr == NULL) 1417 continue; 1418 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1419 continue; 1420 if (allfamilies) { 1421 const struct afswtch *p; 1422 p = af_getbyfamily(ift->ifa_addr->sa_family); 1423 if (p != NULL && p->af_status != NULL) 1424 p->af_status(s, ift); 1425 } else if (afp->af_af == ift->ifa_addr->sa_family) 1426 afp->af_status(s, ift); 1427 } 1428 #if 0 1429 if (allfamilies || afp->af_af == AF_LINK) { 1430 const struct afswtch *lafp; 1431 1432 /* 1433 * Hack; the link level address is received separately 1434 * from the routing information so any address is not 1435 * handled above. Cobble together an entry and invoke 1436 * the status method specially. 1437 */ 1438 lafp = af_getbyname("lladdr"); 1439 if (lafp != NULL) { 1440 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1441 lafp->af_status(s, &info); 1442 } 1443 } 1444 #endif 1445 if (allfamilies) 1446 af_other_status(s); 1447 else if (afp->af_other_status != NULL) 1448 afp->af_other_status(s); 1449 1450 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name); 1451 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0) 1452 printf("%s", ifs.ascii); 1453 1454 if (verbose > 0) 1455 sfp_status(s, &ifr, verbose); 1456 1457 close(s); 1458 return; 1459 } 1460 1461 static void 1462 tunnel_status(int s) 1463 { 1464 af_all_tunnel_status(s); 1465 } 1466 1467 void 1468 Perror(const char *cmd) 1469 { 1470 switch (errno) { 1471 1472 case ENXIO: 1473 errx(1, "%s: no such interface", cmd); 1474 break; 1475 1476 case EPERM: 1477 errx(1, "%s: permission denied", cmd); 1478 break; 1479 1480 default: 1481 err(1, "%s", cmd); 1482 } 1483 } 1484 1485 /* 1486 * Print a value a la the %b format of the kernel's printf 1487 */ 1488 void 1489 printb(const char *s, unsigned v, const char *bits) 1490 { 1491 int i, any = 0; 1492 char c; 1493 1494 if (bits && *bits == 8) 1495 printf("%s=%o", s, v); 1496 else 1497 printf("%s=%x", s, v); 1498 if (bits) { 1499 bits++; 1500 putchar('<'); 1501 while ((i = *bits++) != '\0') { 1502 if (v & (1 << (i-1))) { 1503 if (any) 1504 putchar(','); 1505 any = 1; 1506 for (; (c = *bits) > 32; bits++) 1507 putchar(c); 1508 } else 1509 for (; *bits > 32; bits++) 1510 ; 1511 } 1512 putchar('>'); 1513 } 1514 } 1515 1516 void 1517 print_vhid(const struct ifaddrs *ifa, const char *s) 1518 { 1519 struct if_data *ifd; 1520 1521 if (ifa->ifa_data == NULL) 1522 return; 1523 1524 ifd = ifa->ifa_data; 1525 if (ifd->ifi_vhid == 0) 1526 return; 1527 1528 printf(" vhid %d", ifd->ifi_vhid); 1529 } 1530 1531 void 1532 ifmaybeload(const char *name) 1533 { 1534 #define MOD_PREFIX_LEN 3 /* "if_" */ 1535 struct module_stat mstat; 1536 int i, fileid, modid; 1537 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp; 1538 const char *cp; 1539 struct module_map_entry *mme; 1540 bool found; 1541 1542 /* loading suppressed by the user */ 1543 if (noload) 1544 return; 1545 1546 /* trim the interface number off the end */ 1547 strlcpy(ifname, name, sizeof(ifname)); 1548 for (dp = ifname; *dp != 0; dp++) 1549 if (isdigit(*dp)) { 1550 *dp = 0; 1551 break; 1552 } 1553 1554 /* Either derive it from the map or guess otherwise */ 1555 *ifkind = '\0'; 1556 found = false; 1557 for (i = 0; i < nitems(module_map); ++i) { 1558 mme = &module_map[i]; 1559 if (strcmp(mme->ifname, ifname) == 0) { 1560 strlcpy(ifkind, mme->kldname, sizeof(ifkind)); 1561 found = true; 1562 break; 1563 } 1564 } 1565 1566 /* We didn't have an alias for it... we'll guess. */ 1567 if (!found) { 1568 /* turn interface and unit into module name */ 1569 strlcpy(ifkind, "if_", sizeof(ifkind)); 1570 strlcat(ifkind, ifname, sizeof(ifkind)); 1571 } 1572 1573 /* scan files in kernel */ 1574 mstat.version = sizeof(struct module_stat); 1575 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1576 /* scan modules in file */ 1577 for (modid = kldfirstmod(fileid); modid > 0; 1578 modid = modfnext(modid)) { 1579 if (modstat(modid, &mstat) < 0) 1580 continue; 1581 /* strip bus name if present */ 1582 if ((cp = strchr(mstat.name, '/')) != NULL) { 1583 cp++; 1584 } else { 1585 cp = mstat.name; 1586 } 1587 /* 1588 * Is it already loaded? Don't compare with ifname if 1589 * we were specifically told which kld to use. Doing 1590 * so could lead to conflicts not trivially solved. 1591 */ 1592 if ((!found && strcmp(ifname, cp) == 0) || 1593 strcmp(ifkind, cp) == 0) 1594 return; 1595 } 1596 } 1597 1598 /* 1599 * Try to load the module. But ignore failures, because ifconfig can't 1600 * infer the names of all drivers (eg mlx4en(4)). 1601 */ 1602 (void) kldload(ifkind); 1603 } 1604 1605 static struct cmd basic_cmds[] = { 1606 DEF_CMD("up", IFF_UP, setifflags), 1607 DEF_CMD("down", -IFF_UP, setifflags), 1608 DEF_CMD("arp", -IFF_NOARP, setifflags), 1609 DEF_CMD("-arp", IFF_NOARP, setifflags), 1610 DEF_CMD("debug", IFF_DEBUG, setifflags), 1611 DEF_CMD("-debug", -IFF_DEBUG, setifflags), 1612 DEF_CMD_ARG("description", setifdescr), 1613 DEF_CMD_ARG("descr", setifdescr), 1614 DEF_CMD("-description", 0, unsetifdescr), 1615 DEF_CMD("-descr", 0, unsetifdescr), 1616 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 1617 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags), 1618 DEF_CMD("add", IFF_UP, notealias), 1619 DEF_CMD("alias", IFF_UP, notealias), 1620 DEF_CMD("-alias", -IFF_UP, notealias), 1621 DEF_CMD("delete", -IFF_UP, notealias), 1622 DEF_CMD("remove", -IFF_UP, notealias), 1623 #ifdef notdef 1624 #define EN_SWABIPS 0x1000 1625 DEF_CMD("swabips", EN_SWABIPS, setifflags), 1626 DEF_CMD("-swabips", -EN_SWABIPS, setifflags), 1627 #endif 1628 DEF_CMD_ARG("netmask", setifnetmask), 1629 DEF_CMD_ARG("metric", setifmetric), 1630 DEF_CMD_ARG("broadcast", setifbroadaddr), 1631 DEF_CMD_ARG2("tunnel", settunnel), 1632 DEF_CMD("-tunnel", 0, deletetunnel), 1633 DEF_CMD("deletetunnel", 0, deletetunnel), 1634 #ifdef JAIL 1635 DEF_CMD_ARG("vnet", setifvnet), 1636 DEF_CMD_ARG("-vnet", setifrvnet), 1637 #endif 1638 DEF_CMD("link0", IFF_LINK0, setifflags), 1639 DEF_CMD("-link0", -IFF_LINK0, setifflags), 1640 DEF_CMD("link1", IFF_LINK1, setifflags), 1641 DEF_CMD("-link1", -IFF_LINK1, setifflags), 1642 DEF_CMD("link2", IFF_LINK2, setifflags), 1643 DEF_CMD("-link2", -IFF_LINK2, setifflags), 1644 DEF_CMD("monitor", IFF_MONITOR, setifflags), 1645 DEF_CMD("-monitor", -IFF_MONITOR, setifflags), 1646 DEF_CMD("nomap", IFCAP_NOMAP, setifcap), 1647 DEF_CMD("-nomap", -IFCAP_NOMAP, setifcap), 1648 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 1649 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags), 1650 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 1651 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap), 1652 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 1653 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap), 1654 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 1655 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap), 1656 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 1657 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap), 1658 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 1659 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap), 1660 DEF_CMD_ARG("pcp", setifpcp), 1661 DEF_CMD("-pcp", 0, disableifpcp), 1662 DEF_CMD("polling", IFCAP_POLLING, setifcap), 1663 DEF_CMD("-polling", -IFCAP_POLLING, setifcap), 1664 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 1665 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap), 1666 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 1667 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap), 1668 DEF_CMD("tso", IFCAP_TSO, setifcap), 1669 DEF_CMD("-tso", -IFCAP_TSO, setifcap), 1670 DEF_CMD("toe", IFCAP_TOE, setifcap), 1671 DEF_CMD("-toe", -IFCAP_TOE, setifcap), 1672 DEF_CMD("lro", IFCAP_LRO, setifcap), 1673 DEF_CMD("-lro", -IFCAP_LRO, setifcap), 1674 DEF_CMD("txtls", IFCAP_TXTLS, setifcap), 1675 DEF_CMD("-txtls", -IFCAP_TXTLS, setifcap), 1676 DEF_CMD("wol", IFCAP_WOL, setifcap), 1677 DEF_CMD("-wol", -IFCAP_WOL, setifcap), 1678 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 1679 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap), 1680 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 1681 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap), 1682 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 1683 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap), 1684 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 1685 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap), 1686 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 1687 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap), 1688 DEF_CMD("normal", -IFF_LINK0, setifflags), 1689 DEF_CMD("compress", IFF_LINK0, setifflags), 1690 DEF_CMD("noicmp", IFF_LINK1, setifflags), 1691 DEF_CMD_ARG("mtu", setifmtu), 1692 DEF_CMD_ARG("name", setifname), 1693 }; 1694 1695 static __constructor void 1696 ifconfig_ctor(void) 1697 { 1698 size_t i; 1699 1700 for (i = 0; i < nitems(basic_cmds); i++) 1701 cmd_register(&basic_cmds[i]); 1702 } 1703