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 #if 0 37 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; 38 #endif 39 static const char rcsid[] = 40 "$FreeBSD$"; 41 #endif /* not lint */ 42 43 #include <sys/param.h> 44 #include <sys/ioctl.h> 45 #include <sys/module.h> 46 #include <sys/linker.h> 47 #include <sys/nv.h> 48 #include <sys/queue.h> 49 #include <sys/socket.h> 50 #include <sys/time.h> 51 52 #include <net/ethernet.h> 53 #include <net/if.h> 54 #include <net/if_dl.h> 55 #include <net/if_types.h> 56 #include <net/route.h> 57 58 /* IP */ 59 #include <netinet/in.h> 60 #include <netinet/in_var.h> 61 #include <arpa/inet.h> 62 #include <netdb.h> 63 64 #include <fnmatch.h> 65 #include <ifaddrs.h> 66 #include <ctype.h> 67 #include <err.h> 68 #include <errno.h> 69 #include <fcntl.h> 70 #ifdef JAIL 71 #include <jail.h> 72 #endif 73 #include <stdbool.h> 74 #include <stdio.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <unistd.h> 78 79 #include <libifconfig.h> 80 81 #include "ifconfig.h" 82 83 ifconfig_handle_t *lifh; 84 85 /* 86 * Since "struct ifreq" is composed of various union members, callers 87 * should pay special attention to interpret the value. 88 * (.e.g. little/big endian difference in the structure.) 89 */ 90 struct ifreq ifr; 91 92 char name[IFNAMSIZ]; 93 char *descr = NULL; 94 size_t descrlen = 64; 95 int setaddr; 96 int setmask; 97 int doalias; 98 int clearaddr; 99 int newaddr = 1; 100 int verbose; 101 int noload; 102 int printifname = 0; 103 104 int supmedia = 0; 105 int printkeys = 0; /* Print keying material for interfaces. */ 106 int exit_code = 0; 107 108 /* Formatter Strings */ 109 char *f_inet, *f_inet6, *f_ether, *f_addr; 110 111 static bool group_member(const char *ifname, const char *match, 112 const char *nomatch); 113 static int ifconfig(int argc, char *const *argv, int iscreate, 114 const struct afswtch *afp); 115 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 116 struct ifaddrs *ifa); 117 static void tunnel_status(int s); 118 static _Noreturn void usage(void); 119 120 static int getifflags(const char *ifname, int us, bool err_ok); 121 122 static struct afswtch *af_getbyname(const char *name); 123 static struct afswtch *af_getbyfamily(int af); 124 static void af_other_status(int); 125 126 void printifnamemaybe(void); 127 128 static struct option *opts = NULL; 129 130 struct ifa_order_elt { 131 int if_order; 132 int af_orders[255]; 133 struct ifaddrs *ifa; 134 TAILQ_ENTRY(ifa_order_elt) link; 135 }; 136 137 TAILQ_HEAD(ifa_queue, ifa_order_elt); 138 139 static struct module_map_entry { 140 const char *ifname; 141 const char *kldname; 142 } module_map[] = { 143 { 144 .ifname = "tun", 145 .kldname = "if_tuntap", 146 }, 147 { 148 .ifname = "tap", 149 .kldname = "if_tuntap", 150 }, 151 { 152 .ifname = "vmnet", 153 .kldname = "if_tuntap", 154 }, 155 { 156 .ifname = "ipsec", 157 .kldname = "ipsec", 158 }, 159 { 160 /* 161 * This mapping exists because there is a conflicting enc module 162 * in CAM. ifconfig's guessing behavior will attempt to match 163 * the ifname to a module as well as if_${ifname} and clash with 164 * CAM enc. This is an assertion of the correct module to load. 165 */ 166 .ifname = "enc", 167 .kldname = "if_enc", 168 }, 169 }; 170 171 172 void 173 opt_register(struct option *p) 174 { 175 p->next = opts; 176 opts = p; 177 } 178 179 static void 180 usage(void) 181 { 182 char options[1024]; 183 struct option *p; 184 185 /* XXX not right but close enough for now */ 186 options[0] = '\0'; 187 for (p = opts; p != NULL; p = p->next) { 188 strlcat(options, p->opt_usage, sizeof(options)); 189 strlcat(options, " ", sizeof(options)); 190 } 191 192 fprintf(stderr, 193 "usage: ifconfig [-f type:format] %sinterface address_family\n" 194 " [address [dest_address]] [parameters]\n" 195 " ifconfig interface create\n" 196 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n" 197 " ifconfig -l [-d] [-u] [address_family]\n" 198 " ifconfig %s[-d] [-m] [-u] [-v]\n", 199 options, options, options); 200 exit(1); 201 } 202 203 void 204 ioctl_ifcreate(int s, struct ifreq *ifr) 205 { 206 if (ioctl(s, SIOCIFCREATE2, ifr) < 0) { 207 switch (errno) { 208 case EEXIST: 209 errx(1, "interface %s already exists", ifr->ifr_name); 210 default: 211 err(1, "SIOCIFCREATE2 (%s)", ifr->ifr_name); 212 } 213 } 214 } 215 216 static int 217 calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 218 { 219 struct ifaddrs *prev; 220 struct ifa_order_elt *cur; 221 unsigned int ord, af, ifa_ord; 222 223 prev = NULL; 224 cur = NULL; 225 ord = 0; 226 ifa_ord = 0; 227 228 while (ifa != NULL) { 229 if (prev == NULL || 230 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 231 cur = calloc(1, sizeof(*cur)); 232 233 if (cur == NULL) 234 return (-1); 235 236 TAILQ_INSERT_TAIL(q, cur, link); 237 cur->if_order = ifa_ord ++; 238 cur->ifa = ifa; 239 ord = 0; 240 } 241 242 if (ifa->ifa_addr) { 243 af = ifa->ifa_addr->sa_family; 244 245 if (af < nitems(cur->af_orders) && 246 cur->af_orders[af] == 0) 247 cur->af_orders[af] = ++ord; 248 } 249 prev = ifa; 250 ifa = ifa->ifa_next; 251 } 252 253 return (0); 254 } 255 256 static int 257 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 258 { 259 struct ifa_order_elt *cur, *e1, *e2; 260 unsigned int af1, af2; 261 int ret; 262 263 e1 = e2 = NULL; 264 265 ret = strcmp(a->ifa_name, b->ifa_name); 266 if (ret != 0) { 267 TAILQ_FOREACH(cur, q, link) { 268 if (e1 && e2) 269 break; 270 271 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 272 e1 = cur; 273 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 274 e2 = cur; 275 } 276 277 if (!e1 || !e2) 278 return (0); 279 else 280 return (e1->if_order - e2->if_order); 281 282 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 283 TAILQ_FOREACH(cur, q, link) { 284 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 285 e1 = cur; 286 break; 287 } 288 } 289 290 if (!e1) 291 return (0); 292 293 af1 = a->ifa_addr->sa_family; 294 af2 = b->ifa_addr->sa_family; 295 296 if (af1 < nitems(e1->af_orders) && af2 < nitems(e1->af_orders)) 297 return (e1->af_orders[af1] - e1->af_orders[af2]); 298 } 299 300 return (0); 301 } 302 303 static void freeformat(void) 304 { 305 306 if (f_inet != NULL) 307 free(f_inet); 308 if (f_inet6 != NULL) 309 free(f_inet6); 310 if (f_ether != NULL) 311 free(f_ether); 312 if (f_addr != NULL) 313 free(f_addr); 314 } 315 316 static void setformat(char *input) 317 { 318 char *formatstr, *category, *modifier; 319 320 formatstr = strdup(input); 321 while ((category = strsep(&formatstr, ",")) != NULL) { 322 modifier = strchr(category, ':'); 323 if (modifier == NULL || modifier[1] == '\0') { 324 warnx("Skipping invalid format specification: %s\n", 325 category); 326 continue; 327 } 328 329 /* Split the string on the separator, then seek past it */ 330 modifier[0] = '\0'; 331 modifier++; 332 333 if (strcmp(category, "addr") == 0) 334 f_addr = strdup(modifier); 335 else if (strcmp(category, "ether") == 0) 336 f_ether = strdup(modifier); 337 else if (strcmp(category, "inet") == 0) 338 f_inet = strdup(modifier); 339 else if (strcmp(category, "inet6") == 0) 340 f_inet6 = strdup(modifier); 341 } 342 free(formatstr); 343 } 344 345 static struct ifaddrs * 346 sortifaddrs(struct ifaddrs *list, 347 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 348 struct ifa_queue *q) 349 { 350 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 351 352 right = list; 353 temp = list; 354 last = list; 355 result = NULL; 356 next = NULL; 357 tail = NULL; 358 359 if (!list || !list->ifa_next) 360 return (list); 361 362 while (temp && temp->ifa_next) { 363 last = right; 364 right = right->ifa_next; 365 temp = temp->ifa_next->ifa_next; 366 } 367 368 last->ifa_next = NULL; 369 370 list = sortifaddrs(list, compare, q); 371 right = sortifaddrs(right, compare, q); 372 373 while (list || right) { 374 375 if (!right) { 376 next = list; 377 list = list->ifa_next; 378 } else if (!list) { 379 next = right; 380 right = right->ifa_next; 381 } else if (compare(list, right, q) <= 0) { 382 next = list; 383 list = list->ifa_next; 384 } else { 385 next = right; 386 right = right->ifa_next; 387 } 388 389 if (!result) 390 result = next; 391 else 392 tail->ifa_next = next; 393 394 tail = next; 395 } 396 397 return (result); 398 } 399 400 void printifnamemaybe() 401 { 402 if (printifname) 403 printf("%s\n", name); 404 } 405 406 int 407 main(int argc, char *argv[]) 408 { 409 int c, all, namesonly, downonly, uponly; 410 const struct afswtch *afp = NULL; 411 int ifindex; 412 struct ifaddrs *ifap, *sifap, *ifa; 413 struct ifreq paifr; 414 const struct sockaddr_dl *sdl; 415 char options[1024], *cp, *envformat, *namecp = NULL; 416 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 417 struct ifa_order_elt *cur, *tmp; 418 const char *ifname, *matchgroup, *nogroup; 419 struct option *p; 420 size_t iflen; 421 int flags; 422 423 all = downonly = uponly = namesonly = noload = verbose = 0; 424 f_inet = f_inet6 = f_ether = f_addr = NULL; 425 matchgroup = nogroup = NULL; 426 427 lifh = ifconfig_open(); 428 if (lifh == NULL) 429 err(EXIT_FAILURE, "ifconfig_open"); 430 431 envformat = getenv("IFCONFIG_FORMAT"); 432 if (envformat != NULL) 433 setformat(envformat); 434 435 /* 436 * Ensure we print interface name when expected to, 437 * even if we terminate early due to error. 438 */ 439 atexit(printifnamemaybe); 440 441 /* Parse leading line options */ 442 strlcpy(options, "G:adf:klmnuv", sizeof(options)); 443 for (p = opts; p != NULL; p = p->next) 444 strlcat(options, p->opt, sizeof(options)); 445 while ((c = getopt(argc, argv, options)) != -1) { 446 switch (c) { 447 case 'a': /* scan all interfaces */ 448 all++; 449 break; 450 case 'd': /* restrict scan to "down" interfaces */ 451 downonly++; 452 break; 453 case 'f': 454 if (optarg == NULL) 455 usage(); 456 setformat(optarg); 457 break; 458 case 'G': 459 if (optarg == NULL || all == 0) 460 usage(); 461 nogroup = optarg; 462 break; 463 case 'k': 464 printkeys++; 465 break; 466 case 'l': /* scan interface names only */ 467 namesonly++; 468 break; 469 case 'm': /* show media choices in status */ 470 supmedia = 1; 471 break; 472 case 'n': /* suppress module loading */ 473 noload++; 474 break; 475 case 'u': /* restrict scan to "up" interfaces */ 476 uponly++; 477 break; 478 case 'v': 479 verbose++; 480 break; 481 case 'g': 482 if (all) { 483 if (optarg == NULL) 484 usage(); 485 matchgroup = optarg; 486 break; 487 } 488 /* FALLTHROUGH */ 489 default: 490 for (p = opts; p != NULL; p = p->next) 491 if (p->opt[0] == c) { 492 p->cb(optarg); 493 break; 494 } 495 if (p == NULL) 496 usage(); 497 break; 498 } 499 } 500 argc -= optind; 501 argv += optind; 502 503 /* -l cannot be used with -a or -m */ 504 if (namesonly && (all || supmedia)) 505 usage(); 506 507 /* nonsense.. */ 508 if (uponly && downonly) 509 usage(); 510 511 /* no arguments is equivalent to '-a' */ 512 if (!namesonly && argc < 1) 513 all = 1; 514 515 /* -a and -l allow an address family arg to limit the output */ 516 if (all || namesonly) { 517 if (argc > 1) 518 usage(); 519 520 ifname = NULL; 521 ifindex = 0; 522 if (argc == 1) { 523 afp = af_getbyname(*argv); 524 if (afp == NULL) { 525 warnx("Address family '%s' unknown.", *argv); 526 usage(); 527 } 528 if (afp->af_name != NULL) 529 argc--, argv++; 530 /* leave with afp non-zero */ 531 } 532 } else { 533 /* not listing, need an argument */ 534 if (argc < 1) 535 usage(); 536 537 ifname = *argv; 538 argc--, argv++; 539 540 /* check and maybe load support for this interface */ 541 ifmaybeload(ifname); 542 543 ifindex = if_nametoindex(ifname); 544 if (ifindex == 0) { 545 /* 546 * NOTE: We must special-case the `create' command 547 * right here as we would otherwise fail when trying 548 * to find the interface. 549 */ 550 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 551 strcmp(argv[0], "plumb") == 0)) { 552 iflen = strlcpy(name, ifname, sizeof(name)); 553 if (iflen >= sizeof(name)) 554 errx(1, "%s: cloning name too long", 555 ifname); 556 ifconfig(argc, argv, 1, NULL); 557 exit(exit_code); 558 } 559 #ifdef JAIL 560 /* 561 * NOTE: We have to special-case the `-vnet' command 562 * right here as we would otherwise fail when trying 563 * to find the interface as it lives in another vnet. 564 */ 565 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) { 566 iflen = strlcpy(name, ifname, sizeof(name)); 567 if (iflen >= sizeof(name)) 568 errx(1, "%s: interface name too long", 569 ifname); 570 ifconfig(argc, argv, 0, NULL); 571 exit(exit_code); 572 } 573 #endif 574 errx(1, "interface %s does not exist", ifname); 575 } else { 576 /* 577 * Do not allow use `create` command as hostname if 578 * address family is not specified. 579 */ 580 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 581 strcmp(argv[0], "plumb") == 0)) { 582 if (argc == 1) 583 errx(1, "interface %s already exists", 584 ifname); 585 argc--, argv++; 586 } 587 } 588 } 589 590 /* Check for address family */ 591 if (argc > 0) { 592 afp = af_getbyname(*argv); 593 if (afp != NULL) 594 argc--, argv++; 595 } 596 597 /* 598 * Check for a requested configuration action on a single interface, 599 * which doesn't require building, sorting, and searching the entire 600 * system address list 601 */ 602 if ((argc > 0) && (ifname != NULL)) { 603 iflen = strlcpy(name, ifname, sizeof(name)); 604 if (iflen >= sizeof(name)) { 605 warnx("%s: interface name too long, skipping", ifname); 606 } else { 607 flags = getifflags(name, -1, false); 608 if (!(((flags & IFF_CANTCONFIG) != 0) || 609 (downonly && (flags & IFF_UP) != 0) || 610 (uponly && (flags & IFF_UP) == 0))) 611 ifconfig(argc, argv, 0, afp); 612 } 613 goto done; 614 } 615 616 if (getifaddrs(&ifap) != 0) 617 err(EXIT_FAILURE, "getifaddrs"); 618 619 cp = NULL; 620 621 if (calcorders(ifap, &q) != 0) 622 err(EXIT_FAILURE, "calcorders"); 623 624 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 625 626 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 627 free(cur); 628 629 ifindex = 0; 630 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 631 memset(&paifr, 0, sizeof(paifr)); 632 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 633 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 634 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 635 ifa->ifa_addr->sa_len); 636 } 637 638 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0) 639 continue; 640 if (ifa->ifa_addr->sa_family == AF_LINK) 641 sdl = (const struct sockaddr_dl *) ifa->ifa_addr; 642 else 643 sdl = NULL; 644 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly) 645 continue; 646 iflen = strlcpy(name, ifa->ifa_name, sizeof(name)); 647 if (iflen >= sizeof(name)) { 648 warnx("%s: interface name too long, skipping", 649 ifa->ifa_name); 650 continue; 651 } 652 cp = ifa->ifa_name; 653 654 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0) 655 continue; 656 if (downonly && (ifa->ifa_flags & IFF_UP) != 0) 657 continue; 658 if (uponly && (ifa->ifa_flags & IFF_UP) == 0) 659 continue; 660 if (!group_member(ifa->ifa_name, matchgroup, nogroup)) 661 continue; 662 /* 663 * Are we just listing the interfaces? 664 */ 665 if (namesonly) { 666 if (namecp == cp) 667 continue; 668 if (afp != NULL) { 669 /* special case for "ether" address family */ 670 if (!strcmp(afp->af_name, "ether")) { 671 if (sdl == NULL || 672 (sdl->sdl_type != IFT_ETHER && 673 sdl->sdl_type != IFT_L2VLAN && 674 sdl->sdl_type != IFT_BRIDGE) || 675 sdl->sdl_alen != ETHER_ADDR_LEN) 676 continue; 677 } else { 678 if (ifa->ifa_addr->sa_family 679 != afp->af_af) 680 continue; 681 } 682 } 683 namecp = cp; 684 ifindex++; 685 if (ifindex > 1) 686 printf(" "); 687 fputs(name, stdout); 688 continue; 689 } 690 ifindex++; 691 692 if (argc > 0) 693 ifconfig(argc, argv, 0, afp); 694 else 695 status(afp, sdl, ifa); 696 } 697 if (namesonly) 698 printf("\n"); 699 freeifaddrs(ifap); 700 701 done: 702 freeformat(); 703 ifconfig_close(lifh); 704 exit(exit_code); 705 } 706 707 /* 708 * Returns true if an interface should be listed because any its groups 709 * matches shell pattern "match" and none of groups matches pattern "nomatch". 710 * If any pattern is NULL, corresponding condition is skipped. 711 */ 712 static bool 713 group_member(const char *ifname, const char *match, const char *nomatch) 714 { 715 static int sock = -1; 716 717 struct ifgroupreq ifgr; 718 struct ifg_req *ifg; 719 int len; 720 bool matched, nomatched; 721 722 /* Sanity checks. */ 723 if (match == NULL && nomatch == NULL) 724 return (true); 725 if (ifname == NULL) 726 return (false); 727 728 memset(&ifgr, 0, sizeof(ifgr)); 729 strlcpy(ifgr.ifgr_name, ifname, IFNAMSIZ); 730 731 /* The socket is opened once. Let _exit() close it. */ 732 if (sock == -1) { 733 sock = socket(AF_LOCAL, SOCK_DGRAM, 0); 734 if (sock == -1) 735 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__); 736 } 737 738 /* Determine amount of memory for the list of groups. */ 739 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) { 740 if (errno == EINVAL || errno == ENOTTY) 741 return (false); 742 else 743 errx(1, "%s: SIOCGIFGROUP", __func__); 744 } 745 746 /* Obtain the list of groups. */ 747 len = ifgr.ifgr_len; 748 ifgr.ifgr_groups = 749 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg)); 750 751 if (ifgr.ifgr_groups == NULL) 752 errx(1, "%s: no memory", __func__); 753 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 754 errx(1, "%s: SIOCGIFGROUP", __func__); 755 756 /* Perform matching. */ 757 matched = false; 758 nomatched = true; 759 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) { 760 len -= sizeof(struct ifg_req); 761 if (match) 762 matched |= !fnmatch(match, ifg->ifgrq_group, 0); 763 if (nomatch) 764 nomatched &= fnmatch(nomatch, ifg->ifgrq_group, 0); 765 } 766 free(ifgr.ifgr_groups); 767 768 if (match && !nomatch) 769 return (matched); 770 if (!match && nomatch) 771 return (nomatched); 772 return (matched && nomatched); 773 } 774 775 static struct afswtch *afs = NULL; 776 777 void 778 af_register(struct afswtch *p) 779 { 780 p->af_next = afs; 781 afs = p; 782 } 783 784 static struct afswtch * 785 af_getbyname(const char *name) 786 { 787 struct afswtch *afp; 788 789 for (afp = afs; afp != NULL; afp = afp->af_next) 790 if (strcmp(afp->af_name, name) == 0) 791 return afp; 792 return NULL; 793 } 794 795 static struct afswtch * 796 af_getbyfamily(int af) 797 { 798 struct afswtch *afp; 799 800 for (afp = afs; afp != NULL; afp = afp->af_next) 801 if (afp->af_af == af) 802 return afp; 803 return NULL; 804 } 805 806 static void 807 af_other_status(int s) 808 { 809 struct afswtch *afp; 810 uint8_t afmask[howmany(AF_MAX, NBBY)]; 811 812 memset(afmask, 0, sizeof(afmask)); 813 for (afp = afs; afp != NULL; afp = afp->af_next) { 814 if (afp->af_other_status == NULL) 815 continue; 816 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 817 continue; 818 afp->af_other_status(s); 819 setbit(afmask, afp->af_af); 820 } 821 } 822 823 static void 824 af_all_tunnel_status(int s) 825 { 826 struct afswtch *afp; 827 uint8_t afmask[howmany(AF_MAX, NBBY)]; 828 829 memset(afmask, 0, sizeof(afmask)); 830 for (afp = afs; afp != NULL; afp = afp->af_next) { 831 if (afp->af_status_tunnel == NULL) 832 continue; 833 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 834 continue; 835 afp->af_status_tunnel(s); 836 setbit(afmask, afp->af_af); 837 } 838 } 839 840 static struct cmd *cmds = NULL; 841 842 void 843 cmd_register(struct cmd *p) 844 { 845 p->c_next = cmds; 846 cmds = p; 847 } 848 849 static const struct cmd * 850 cmd_lookup(const char *name, int iscreate) 851 { 852 const struct cmd *p; 853 854 for (p = cmds; p != NULL; p = p->c_next) 855 if (strcmp(name, p->c_name) == 0) { 856 if (iscreate) { 857 if (p->c_iscloneop) 858 return p; 859 } else { 860 if (!p->c_iscloneop) 861 return p; 862 } 863 } 864 return NULL; 865 } 866 867 struct callback { 868 callback_func *cb_func; 869 void *cb_arg; 870 struct callback *cb_next; 871 }; 872 static struct callback *callbacks = NULL; 873 874 void 875 callback_register(callback_func *func, void *arg) 876 { 877 struct callback *cb; 878 879 cb = malloc(sizeof(struct callback)); 880 if (cb == NULL) 881 errx(1, "unable to allocate memory for callback"); 882 cb->cb_func = func; 883 cb->cb_arg = arg; 884 cb->cb_next = callbacks; 885 callbacks = cb; 886 } 887 888 /* specially-handled commands */ 889 static void setifaddr(const char *, int, int, const struct afswtch *); 890 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 891 892 static void setifdstaddr(const char *, int, int, const struct afswtch *); 893 static const struct cmd setifdstaddr_cmd = 894 DEF_CMD("ifdstaddr", 0, setifdstaddr); 895 896 static int 897 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp) 898 { 899 const struct afswtch *afp, *nafp; 900 const struct cmd *p; 901 struct callback *cb; 902 int s; 903 904 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 905 afp = NULL; 906 if (uafp != NULL) 907 afp = uafp; 908 /* 909 * This is the historical "accident" allowing users to configure IPv4 910 * addresses without the "inet" keyword which while a nice feature has 911 * proven to complicate other things. We cannot remove this but only 912 * make sure we will never have a similar implicit default for IPv6 or 913 * any other address familiy. We need a fallback though for 914 * ifconfig IF up/down etc. to work without INET support as people 915 * never used ifconfig IF link up/down, etc. either. 916 */ 917 #ifndef RESCUE 918 #ifdef INET 919 if (afp == NULL && feature_present("inet")) 920 afp = af_getbyname("inet"); 921 #endif 922 #endif 923 if (afp == NULL) 924 afp = af_getbyname("link"); 925 if (afp == NULL) { 926 warnx("Please specify an address_family."); 927 usage(); 928 } 929 top: 930 ifr.ifr_addr.sa_family = 931 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 932 AF_LOCAL : afp->af_af; 933 934 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 935 (uafp != NULL || errno != EAFNOSUPPORT || 936 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 937 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 938 939 while (argc > 0) { 940 p = cmd_lookup(*argv, iscreate); 941 if (iscreate && p == NULL) { 942 /* 943 * Push the clone create callback so the new 944 * device is created and can be used for any 945 * remaining arguments. 946 */ 947 cb = callbacks; 948 if (cb == NULL) 949 errx(1, "internal error, no callback"); 950 callbacks = cb->cb_next; 951 cb->cb_func(s, cb->cb_arg); 952 iscreate = 0; 953 /* 954 * Handle any address family spec that 955 * immediately follows and potentially 956 * recreate the socket. 957 */ 958 nafp = af_getbyname(*argv); 959 if (nafp != NULL) { 960 argc--, argv++; 961 if (nafp != afp) { 962 close(s); 963 afp = nafp; 964 goto top; 965 } 966 } 967 /* 968 * Look for a normal parameter. 969 */ 970 continue; 971 } 972 if (p == NULL) { 973 /* 974 * Not a recognized command, choose between setting 975 * the interface address and the dst address. 976 */ 977 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 978 } 979 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 980 if (argv[1] == NULL) 981 errx(1, "'%s' requires argument", 982 p->c_name); 983 p->c_u.c_func(argv[1], 0, s, afp); 984 argc--, argv++; 985 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 986 p->c_u.c_func(argv[1], 0, s, afp); 987 if (argv[1] != NULL) 988 argc--, argv++; 989 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 990 if (argc < 3) 991 errx(1, "'%s' requires 2 arguments", 992 p->c_name); 993 p->c_u.c_func2(argv[1], argv[2], s, afp); 994 argc -= 2, argv += 2; 995 } else if (p->c_parameter == SPARAM && p->c_u.c_func3) { 996 p->c_u.c_func3(*argv, p->c_sparameter, s, afp); 997 } else if (p->c_u.c_func) 998 p->c_u.c_func(*argv, p->c_parameter, s, afp); 999 argc--, argv++; 1000 } 1001 1002 /* 1003 * Do any post argument processing required by the address family. 1004 */ 1005 if (afp->af_postproc != NULL) 1006 afp->af_postproc(s, afp, newaddr, getifflags(name, s, true)); 1007 /* 1008 * Do deferred callbacks registered while processing 1009 * command-line arguments. 1010 */ 1011 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 1012 cb->cb_func(s, cb->cb_arg); 1013 /* 1014 * Do deferred operations. 1015 */ 1016 if (clearaddr) { 1017 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) { 1018 warnx("interface %s cannot change %s addresses!", 1019 name, afp->af_name); 1020 clearaddr = 0; 1021 } 1022 } 1023 if (clearaddr) { 1024 int ret; 1025 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name, 1026 sizeof ifr.ifr_name); 1027 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq); 1028 if (ret < 0) { 1029 if (errno == EADDRNOTAVAIL && (doalias >= 0)) { 1030 /* means no previous address for interface */ 1031 } else 1032 Perror("ioctl (SIOCDIFADDR)"); 1033 } 1034 } 1035 if (newaddr) { 1036 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) { 1037 warnx("interface %s cannot change %s addresses!", 1038 name, afp->af_name); 1039 newaddr = 0; 1040 } 1041 } 1042 if (newaddr && (setaddr || setmask)) { 1043 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name, 1044 sizeof ifr.ifr_name); 1045 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0) 1046 Perror("ioctl (SIOCAIFADDR)"); 1047 } 1048 1049 close(s); 1050 return(0); 1051 } 1052 1053 /*ARGSUSED*/ 1054 static void 1055 setifaddr(const char *addr, int param, int s, const struct afswtch *afp) 1056 { 1057 if (afp->af_getaddr == NULL) 1058 return; 1059 /* 1060 * Delay the ioctl to set the interface addr until flags are all set. 1061 * The address interpretation may depend on the flags, 1062 * and the flags may change when the address is set. 1063 */ 1064 setaddr++; 1065 if (doalias == 0 && afp->af_af != AF_LINK) 1066 clearaddr = 1; 1067 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 1068 } 1069 1070 static void 1071 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp) 1072 { 1073 struct addrinfo *srcres, *dstres; 1074 int ecode; 1075 1076 if (afp->af_settunnel == NULL) { 1077 warn("address family %s does not support tunnel setup", 1078 afp->af_name); 1079 return; 1080 } 1081 1082 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 1083 errx(1, "error in parsing address string: %s", 1084 gai_strerror(ecode)); 1085 1086 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 1087 errx(1, "error in parsing address string: %s", 1088 gai_strerror(ecode)); 1089 1090 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 1091 errx(1, 1092 "source and destination address families do not match"); 1093 1094 afp->af_settunnel(s, srcres, dstres); 1095 1096 freeaddrinfo(srcres); 1097 freeaddrinfo(dstres); 1098 } 1099 1100 /* ARGSUSED */ 1101 static void 1102 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp) 1103 { 1104 1105 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0) 1106 err(1, "SIOCDIFPHYADDR"); 1107 } 1108 1109 #ifdef JAIL 1110 static void 1111 setifvnet(const char *jname, int dummy __unused, int s, 1112 const struct afswtch *afp) 1113 { 1114 struct ifreq my_ifr; 1115 1116 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1117 my_ifr.ifr_jid = jail_getid(jname); 1118 if (my_ifr.ifr_jid < 0) 1119 errx(1, "%s", jail_errmsg); 1120 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0) 1121 err(1, "SIOCSIFVNET"); 1122 } 1123 1124 static void 1125 setifrvnet(const char *jname, int dummy __unused, int s, 1126 const struct afswtch *afp) 1127 { 1128 struct ifreq my_ifr; 1129 1130 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1131 my_ifr.ifr_jid = jail_getid(jname); 1132 if (my_ifr.ifr_jid < 0) 1133 errx(1, "%s", jail_errmsg); 1134 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0) 1135 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name); 1136 } 1137 #endif 1138 1139 static void 1140 setifnetmask(const char *addr, int dummy __unused, int s, 1141 const struct afswtch *afp) 1142 { 1143 if (afp->af_getaddr != NULL) { 1144 setmask++; 1145 afp->af_getaddr(addr, MASK); 1146 } 1147 } 1148 1149 static void 1150 setifbroadaddr(const char *addr, int dummy __unused, int s, 1151 const struct afswtch *afp) 1152 { 1153 if (afp->af_getaddr != NULL) 1154 afp->af_getaddr(addr, DSTADDR); 1155 } 1156 1157 static void 1158 notealias(const char *addr, int param, int s, const struct afswtch *afp) 1159 { 1160 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) 1161 if (setaddr && doalias == 0 && param < 0) 1162 if (afp->af_addreq != NULL && afp->af_ridreq != NULL) 1163 bcopy((caddr_t)rqtosa(af_addreq), 1164 (caddr_t)rqtosa(af_ridreq), 1165 rqtosa(af_addreq)->sa_len); 1166 doalias = param; 1167 if (param < 0) { 1168 clearaddr = 1; 1169 newaddr = 0; 1170 } else 1171 clearaddr = 0; 1172 #undef rqtosa 1173 } 1174 1175 /*ARGSUSED*/ 1176 static void 1177 setifdstaddr(const char *addr, int param __unused, int s, 1178 const struct afswtch *afp) 1179 { 1180 if (afp->af_getaddr != NULL) 1181 afp->af_getaddr(addr, DSTADDR); 1182 } 1183 1184 static int 1185 getifflags(const char *ifname, int us, bool err_ok) 1186 { 1187 struct ifreq my_ifr; 1188 int s; 1189 1190 memset(&my_ifr, 0, sizeof(my_ifr)); 1191 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1192 if (us < 0) { 1193 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1194 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1195 } else 1196 s = us; 1197 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1198 if (!err_ok) { 1199 Perror("ioctl (SIOCGIFFLAGS)"); 1200 exit(1); 1201 } 1202 } 1203 if (us < 0) 1204 close(s); 1205 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1206 } 1207 1208 /* 1209 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1210 * of the ifreq structure, which may confuse other parts of ifconfig. 1211 * Make a private copy so we can avoid that. 1212 */ 1213 static void 1214 setifflags(const char *vname, int value, int s, const struct afswtch *afp) 1215 { 1216 struct ifreq my_ifr; 1217 int flags; 1218 1219 flags = getifflags(name, s, false); 1220 if (value < 0) { 1221 value = -value; 1222 flags &= ~value; 1223 } else 1224 flags |= value; 1225 memset(&my_ifr, 0, sizeof(my_ifr)); 1226 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); 1227 my_ifr.ifr_flags = flags & 0xffff; 1228 my_ifr.ifr_flagshigh = flags >> 16; 1229 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1230 Perror(vname); 1231 } 1232 1233 void 1234 setifcap(const char *vname, int value, int s, const struct afswtch *afp) 1235 { 1236 int flags; 1237 1238 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) { 1239 Perror("ioctl (SIOCGIFCAP)"); 1240 exit(1); 1241 } 1242 flags = ifr.ifr_curcap; 1243 if (value < 0) { 1244 value = -value; 1245 flags &= ~value; 1246 } else 1247 flags |= value; 1248 flags &= ifr.ifr_reqcap; 1249 /* Check for no change in capabilities. */ 1250 if (ifr.ifr_curcap == flags) 1251 return; 1252 ifr.ifr_reqcap = flags; 1253 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0) 1254 Perror(vname); 1255 } 1256 1257 void 1258 setifcapnv(const char *vname, const char *arg, int s, const struct afswtch *afp) 1259 { 1260 nvlist_t *nvcap; 1261 void *buf; 1262 char *marg, *mopt; 1263 size_t nvbuflen; 1264 bool neg; 1265 1266 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) 1267 Perror("ioctl (SIOCGIFCAP)"); 1268 if ((ifr.ifr_curcap & IFCAP_NV) == 0) { 1269 warnx("IFCAP_NV not supported"); 1270 return; /* Not exit() */ 1271 } 1272 1273 marg = strdup(arg); 1274 if (marg == NULL) 1275 Perror("strdup"); 1276 nvcap = nvlist_create(0); 1277 if (nvcap == NULL) 1278 Perror("nvlist_create"); 1279 while ((mopt = strsep(&marg, ",")) != NULL) { 1280 neg = *mopt == '-'; 1281 if (neg) 1282 mopt++; 1283 if (strcmp(mopt, "rxtls") == 0) { 1284 nvlist_add_bool(nvcap, "rxtls4", !neg); 1285 nvlist_add_bool(nvcap, "rxtls6", !neg); 1286 } else { 1287 nvlist_add_bool(nvcap, mopt, !neg); 1288 } 1289 } 1290 buf = nvlist_pack(nvcap, &nvbuflen); 1291 if (buf == NULL) { 1292 errx(1, "nvlist_pack error"); 1293 exit(1); 1294 } 1295 ifr.ifr_cap_nv.buf_length = ifr.ifr_cap_nv.length = nvbuflen; 1296 ifr.ifr_cap_nv.buffer = buf; 1297 if (ioctl(s, SIOCSIFCAPNV, (caddr_t)&ifr) < 0) 1298 Perror(vname); 1299 free(buf); 1300 nvlist_destroy(nvcap); 1301 free(marg); 1302 } 1303 1304 static void 1305 setifmetric(const char *val, int dummy __unused, int s, 1306 const struct afswtch *afp) 1307 { 1308 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1309 ifr.ifr_metric = atoi(val); 1310 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) 1311 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1312 } 1313 1314 static void 1315 setifmtu(const char *val, int dummy __unused, int s, 1316 const struct afswtch *afp) 1317 { 1318 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1319 ifr.ifr_mtu = atoi(val); 1320 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) 1321 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1322 } 1323 1324 static void 1325 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp) 1326 { 1327 u_long ul; 1328 char *endp; 1329 1330 ul = strtoul(val, &endp, 0); 1331 if (*endp != '\0') 1332 errx(1, "invalid value for pcp"); 1333 if (ul > 7) 1334 errx(1, "value for pcp out of range"); 1335 ifr.ifr_lan_pcp = ul; 1336 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1337 err(1, "SIOCSLANPCP"); 1338 } 1339 1340 static void 1341 disableifpcp(const char *val, int arg __unused, int s, 1342 const struct afswtch *afp) 1343 { 1344 1345 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1346 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1347 err(1, "SIOCSLANPCP"); 1348 } 1349 1350 static void 1351 setifname(const char *val, int dummy __unused, int s, 1352 const struct afswtch *afp) 1353 { 1354 char *newname; 1355 1356 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1357 1358 newname = strdup(val); 1359 if (newname == NULL) 1360 err(1, "no memory to set ifname"); 1361 ifr.ifr_data = newname; 1362 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1363 free(newname); 1364 err(1, "ioctl SIOCSIFNAME (set name)"); 1365 } 1366 printifname = 1; 1367 strlcpy(name, newname, sizeof(name)); 1368 free(newname); 1369 } 1370 1371 /* ARGSUSED */ 1372 static void 1373 setifdescr(const char *val, int dummy __unused, int s, 1374 const struct afswtch *afp) 1375 { 1376 char *newdescr; 1377 1378 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1379 1380 ifr.ifr_buffer.length = strlen(val) + 1; 1381 if (ifr.ifr_buffer.length == 1) { 1382 ifr.ifr_buffer.buffer = newdescr = NULL; 1383 ifr.ifr_buffer.length = 0; 1384 } else { 1385 newdescr = strdup(val); 1386 ifr.ifr_buffer.buffer = newdescr; 1387 if (newdescr == NULL) { 1388 warn("no memory to set ifdescr"); 1389 return; 1390 } 1391 } 1392 1393 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) 1394 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1395 1396 free(newdescr); 1397 } 1398 1399 /* ARGSUSED */ 1400 static void 1401 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp) 1402 { 1403 1404 setifdescr("", 0, s, 0); 1405 } 1406 1407 #define IFFBITS \ 1408 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1409 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1410 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP\25STICKYARP" 1411 1412 #define IFCAPBITS \ 1413 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1414 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1415 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1416 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" \ 1417 "\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT" 1418 1419 /* 1420 * Print the status of the interface. If an address family was 1421 * specified, show only it; otherwise, show them all. 1422 */ 1423 static void 1424 status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 1425 struct ifaddrs *ifa) 1426 { 1427 struct ifaddrs *ift; 1428 struct ifstat ifs; 1429 nvlist_t *nvcap; 1430 const char *nvname; 1431 void *buf, *cookie; 1432 int allfamilies, s, type; 1433 bool first, val; 1434 1435 if (afp == NULL) { 1436 allfamilies = 1; 1437 ifr.ifr_addr.sa_family = AF_LOCAL; 1438 } else { 1439 allfamilies = 0; 1440 ifr.ifr_addr.sa_family = 1441 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af; 1442 } 1443 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1444 1445 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1446 if (s < 0) 1447 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1448 1449 printf("%s: ", name); 1450 printb("flags", ifa->ifa_flags, IFFBITS); 1451 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1) 1452 printf(" metric %d", ifr.ifr_metric); 1453 if (ioctl(s, SIOCGIFMTU, &ifr) != -1) 1454 printf(" mtu %d", ifr.ifr_mtu); 1455 putchar('\n'); 1456 1457 for (;;) { 1458 if ((descr = reallocf(descr, descrlen)) != NULL) { 1459 ifr.ifr_buffer.buffer = descr; 1460 ifr.ifr_buffer.length = descrlen; 1461 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) { 1462 if (ifr.ifr_buffer.buffer == descr) { 1463 if (strlen(descr) > 0) 1464 printf("\tdescription: %s\n", 1465 descr); 1466 } else if (ifr.ifr_buffer.length > descrlen) { 1467 descrlen = ifr.ifr_buffer.length; 1468 continue; 1469 } 1470 } 1471 } else 1472 warn("unable to allocate memory for interface" 1473 "description"); 1474 break; 1475 } 1476 1477 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) { 1478 if ((ifr.ifr_curcap & IFCAP_NV) != 0) { 1479 buf = malloc(IFR_CAP_NV_MAXBUFSIZE); 1480 if (buf == NULL) 1481 Perror("malloc"); 1482 ifr.ifr_cap_nv.buffer = buf; 1483 ifr.ifr_cap_nv.buf_length = IFR_CAP_NV_MAXBUFSIZE; 1484 if (ioctl(s, SIOCGIFCAPNV, (caddr_t)&ifr) != 0) 1485 Perror("ioctl (SIOCGIFCAPNV)"); 1486 nvcap = nvlist_unpack(ifr.ifr_cap_nv.buffer, 1487 ifr.ifr_cap_nv.length, 0); 1488 if (nvcap == NULL) 1489 Perror("nvlist_unpack"); 1490 printf("\toptions"); 1491 cookie = NULL; 1492 for (first = true;; first = false) { 1493 nvname = nvlist_next(nvcap, &type, &cookie); 1494 if (nvname == NULL) { 1495 printf("\n"); 1496 break; 1497 } 1498 if (type == NV_TYPE_BOOL) { 1499 val = nvlist_get_bool(nvcap, nvname); 1500 if (val) { 1501 printf("%c%s", 1502 first ? ' ' : ',', nvname); 1503 } 1504 } 1505 } 1506 if (supmedia) { 1507 printf("\tcapabilities"); 1508 cookie = NULL; 1509 for (first = true;; first = false) { 1510 nvname = nvlist_next(nvcap, &type, 1511 &cookie); 1512 if (nvname == NULL) { 1513 printf("\n"); 1514 break; 1515 } 1516 if (type == NV_TYPE_BOOL) 1517 printf("%c%s", first ? ' ' : 1518 ',', nvname); 1519 } 1520 } 1521 nvlist_destroy(nvcap); 1522 free(buf); 1523 1524 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) != 0) 1525 Perror("ioctl (SIOCGIFCAP)"); 1526 } else if (ifr.ifr_curcap != 0) { 1527 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1528 putchar('\n'); 1529 if (supmedia && ifr.ifr_reqcap != 0) { 1530 printb("\tcapabilities", ifr.ifr_reqcap, 1531 IFCAPBITS); 1532 putchar('\n'); 1533 } 1534 } 1535 } 1536 1537 tunnel_status(s); 1538 1539 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1540 if (ift->ifa_addr == NULL) 1541 continue; 1542 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1543 continue; 1544 if (allfamilies) { 1545 const struct afswtch *p; 1546 p = af_getbyfamily(ift->ifa_addr->sa_family); 1547 if (p != NULL && p->af_status != NULL) 1548 p->af_status(s, ift); 1549 } else if (afp->af_af == ift->ifa_addr->sa_family) 1550 afp->af_status(s, ift); 1551 } 1552 #if 0 1553 if (allfamilies || afp->af_af == AF_LINK) { 1554 const struct afswtch *lafp; 1555 1556 /* 1557 * Hack; the link level address is received separately 1558 * from the routing information so any address is not 1559 * handled above. Cobble together an entry and invoke 1560 * the status method specially. 1561 */ 1562 lafp = af_getbyname("lladdr"); 1563 if (lafp != NULL) { 1564 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1565 lafp->af_status(s, &info); 1566 } 1567 } 1568 #endif 1569 if (allfamilies) 1570 af_other_status(s); 1571 else if (afp->af_other_status != NULL) 1572 afp->af_other_status(s); 1573 1574 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name); 1575 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0) 1576 printf("%s", ifs.ascii); 1577 1578 if (verbose > 0) 1579 sfp_status(s, &ifr, verbose); 1580 1581 close(s); 1582 return; 1583 } 1584 1585 static void 1586 tunnel_status(int s) 1587 { 1588 af_all_tunnel_status(s); 1589 } 1590 1591 void 1592 Perror(const char *cmd) 1593 { 1594 switch (errno) { 1595 1596 case ENXIO: 1597 errx(1, "%s: no such interface", cmd); 1598 break; 1599 1600 case EPERM: 1601 errx(1, "%s: permission denied", cmd); 1602 break; 1603 1604 default: 1605 err(1, "%s", cmd); 1606 } 1607 } 1608 1609 /* 1610 * Print a value a la the %b format of the kernel's printf 1611 */ 1612 void 1613 printb(const char *s, unsigned v, const char *bits) 1614 { 1615 int i, any = 0; 1616 char c; 1617 1618 if (bits && *bits == 8) 1619 printf("%s=%o", s, v); 1620 else 1621 printf("%s=%x", s, v); 1622 if (bits) { 1623 bits++; 1624 putchar('<'); 1625 while ((i = *bits++) != '\0') { 1626 if (v & (1u << (i-1))) { 1627 if (any) 1628 putchar(','); 1629 any = 1; 1630 for (; (c = *bits) > 32; bits++) 1631 putchar(c); 1632 } else 1633 for (; *bits > 32; bits++) 1634 ; 1635 } 1636 putchar('>'); 1637 } 1638 } 1639 1640 void 1641 print_vhid(const struct ifaddrs *ifa, const char *s) 1642 { 1643 struct if_data *ifd; 1644 1645 if (ifa->ifa_data == NULL) 1646 return; 1647 1648 ifd = ifa->ifa_data; 1649 if (ifd->ifi_vhid == 0) 1650 return; 1651 1652 printf(" vhid %d", ifd->ifi_vhid); 1653 } 1654 1655 void 1656 ifmaybeload(const char *name) 1657 { 1658 #define MOD_PREFIX_LEN 3 /* "if_" */ 1659 struct module_stat mstat; 1660 int i, fileid, modid; 1661 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp; 1662 const char *cp; 1663 struct module_map_entry *mme; 1664 bool found; 1665 1666 /* loading suppressed by the user */ 1667 if (noload) 1668 return; 1669 1670 /* trim the interface number off the end */ 1671 strlcpy(ifname, name, sizeof(ifname)); 1672 for (dp = ifname; *dp != 0; dp++) 1673 if (isdigit(*dp)) { 1674 *dp = 0; 1675 break; 1676 } 1677 1678 /* Either derive it from the map or guess otherwise */ 1679 *ifkind = '\0'; 1680 found = false; 1681 for (i = 0; i < nitems(module_map); ++i) { 1682 mme = &module_map[i]; 1683 if (strcmp(mme->ifname, ifname) == 0) { 1684 strlcpy(ifkind, mme->kldname, sizeof(ifkind)); 1685 found = true; 1686 break; 1687 } 1688 } 1689 1690 /* We didn't have an alias for it... we'll guess. */ 1691 if (!found) { 1692 /* turn interface and unit into module name */ 1693 strlcpy(ifkind, "if_", sizeof(ifkind)); 1694 strlcat(ifkind, ifname, sizeof(ifkind)); 1695 } 1696 1697 /* scan files in kernel */ 1698 mstat.version = sizeof(struct module_stat); 1699 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1700 /* scan modules in file */ 1701 for (modid = kldfirstmod(fileid); modid > 0; 1702 modid = modfnext(modid)) { 1703 if (modstat(modid, &mstat) < 0) 1704 continue; 1705 /* strip bus name if present */ 1706 if ((cp = strchr(mstat.name, '/')) != NULL) { 1707 cp++; 1708 } else { 1709 cp = mstat.name; 1710 } 1711 /* 1712 * Is it already loaded? Don't compare with ifname if 1713 * we were specifically told which kld to use. Doing 1714 * so could lead to conflicts not trivially solved. 1715 */ 1716 if ((!found && strcmp(ifname, cp) == 0) || 1717 strcmp(ifkind, cp) == 0) 1718 return; 1719 } 1720 } 1721 1722 /* 1723 * Try to load the module. But ignore failures, because ifconfig can't 1724 * infer the names of all drivers (eg mlx4en(4)). 1725 */ 1726 (void) kldload(ifkind); 1727 } 1728 1729 static struct cmd basic_cmds[] = { 1730 DEF_CMD("up", IFF_UP, setifflags), 1731 DEF_CMD("down", -IFF_UP, setifflags), 1732 DEF_CMD("arp", -IFF_NOARP, setifflags), 1733 DEF_CMD("-arp", IFF_NOARP, setifflags), 1734 DEF_CMD("debug", IFF_DEBUG, setifflags), 1735 DEF_CMD("-debug", -IFF_DEBUG, setifflags), 1736 DEF_CMD_ARG("description", setifdescr), 1737 DEF_CMD_ARG("descr", setifdescr), 1738 DEF_CMD("-description", 0, unsetifdescr), 1739 DEF_CMD("-descr", 0, unsetifdescr), 1740 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 1741 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags), 1742 DEF_CMD("add", IFF_UP, notealias), 1743 DEF_CMD("alias", IFF_UP, notealias), 1744 DEF_CMD("-alias", -IFF_UP, notealias), 1745 DEF_CMD("delete", -IFF_UP, notealias), 1746 DEF_CMD("remove", -IFF_UP, notealias), 1747 #ifdef notdef 1748 #define EN_SWABIPS 0x1000 1749 DEF_CMD("swabips", EN_SWABIPS, setifflags), 1750 DEF_CMD("-swabips", -EN_SWABIPS, setifflags), 1751 #endif 1752 DEF_CMD_ARG("netmask", setifnetmask), 1753 DEF_CMD_ARG("metric", setifmetric), 1754 DEF_CMD_ARG("broadcast", setifbroadaddr), 1755 DEF_CMD_ARG2("tunnel", settunnel), 1756 DEF_CMD("-tunnel", 0, deletetunnel), 1757 DEF_CMD("deletetunnel", 0, deletetunnel), 1758 #ifdef JAIL 1759 DEF_CMD_ARG("vnet", setifvnet), 1760 DEF_CMD_ARG("-vnet", setifrvnet), 1761 #endif 1762 DEF_CMD("link0", IFF_LINK0, setifflags), 1763 DEF_CMD("-link0", -IFF_LINK0, setifflags), 1764 DEF_CMD("link1", IFF_LINK1, setifflags), 1765 DEF_CMD("-link1", -IFF_LINK1, setifflags), 1766 DEF_CMD("link2", IFF_LINK2, setifflags), 1767 DEF_CMD("-link2", -IFF_LINK2, setifflags), 1768 DEF_CMD("monitor", IFF_MONITOR, setifflags), 1769 DEF_CMD("-monitor", -IFF_MONITOR, setifflags), 1770 DEF_CMD("mextpg", IFCAP_MEXTPG, setifcap), 1771 DEF_CMD("-mextpg", -IFCAP_MEXTPG, setifcap), 1772 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 1773 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags), 1774 DEF_CMD("stickyarp", IFF_STICKYARP, setifflags), 1775 DEF_CMD("-stickyarp", -IFF_STICKYARP, setifflags), 1776 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 1777 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap), 1778 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 1779 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap), 1780 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 1781 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap), 1782 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 1783 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap), 1784 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 1785 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap), 1786 DEF_CMD_ARG("pcp", setifpcp), 1787 DEF_CMD("-pcp", 0, disableifpcp), 1788 DEF_CMD("polling", IFCAP_POLLING, setifcap), 1789 DEF_CMD("-polling", -IFCAP_POLLING, setifcap), 1790 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 1791 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap), 1792 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 1793 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap), 1794 DEF_CMD("tso", IFCAP_TSO, setifcap), 1795 DEF_CMD("-tso", -IFCAP_TSO, setifcap), 1796 DEF_CMD("toe", IFCAP_TOE, setifcap), 1797 DEF_CMD("-toe", -IFCAP_TOE, setifcap), 1798 DEF_CMD("lro", IFCAP_LRO, setifcap), 1799 DEF_CMD("-lro", -IFCAP_LRO, setifcap), 1800 DEF_CMD("txtls", IFCAP_TXTLS, setifcap), 1801 DEF_CMD("-txtls", -IFCAP_TXTLS, setifcap), 1802 DEF_CMD_SARG("rxtls", IFCAP2_RXTLS4_NAME "," IFCAP2_RXTLS6_NAME, 1803 setifcapnv), 1804 DEF_CMD_SARG("-rxtls", "-"IFCAP2_RXTLS4_NAME ",-" IFCAP2_RXTLS6_NAME, 1805 setifcapnv), 1806 DEF_CMD("wol", IFCAP_WOL, setifcap), 1807 DEF_CMD("-wol", -IFCAP_WOL, setifcap), 1808 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 1809 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap), 1810 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 1811 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap), 1812 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 1813 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap), 1814 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 1815 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap), 1816 DEF_CMD("txtlsrtlmt", IFCAP_TXTLS_RTLMT, setifcap), 1817 DEF_CMD("-txtlsrtlmt", -IFCAP_TXTLS_RTLMT, setifcap), 1818 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 1819 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap), 1820 DEF_CMD("normal", -IFF_LINK0, setifflags), 1821 DEF_CMD("compress", IFF_LINK0, setifflags), 1822 DEF_CMD("noicmp", IFF_LINK1, setifflags), 1823 DEF_CMD_ARG("mtu", setifmtu), 1824 DEF_CMD_ARG("name", setifname), 1825 }; 1826 1827 static __constructor void 1828 ifconfig_ctor(void) 1829 { 1830 size_t i; 1831 1832 for (i = 0; i < nitems(basic_cmds); i++) 1833 cmd_register(&basic_cmds[i]); 1834 } 1835