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 33static const char copyright[] = 34"@(#) Copyright (c) 1983, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36#if 0 37static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; 38#endif 39static 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/queue.h> 48#include <sys/socket.h> 49#include <sys/time.h> 50 51#include <net/ethernet.h> 52#include <net/if.h> 53#include <net/if_dl.h> 54#include <net/if_types.h> 55#include <net/route.h> 56 57/* IP */ 58#include <netinet/in.h> 59#include <netinet/in_var.h> 60#include <arpa/inet.h> 61#include <netdb.h> 62 63#include <fnmatch.h> 64#include <ifaddrs.h> 65#include <ctype.h> 66#include <err.h> 67#include <errno.h> 68#include <fcntl.h> 69#ifdef JAIL 70#include <jail.h> 71#endif 72#include <stdbool.h> 73#include <stdio.h> 74#include <stdlib.h> 75#include <string.h> 76#include <unistd.h> 77 78#include <libifconfig.h> 79 80#include "ifconfig.h" 81 82ifconfig_handle_t *lifh; 83 84/* 85 * Since "struct ifreq" is composed of various union members, callers 86 * should pay special attention to interpret the value. 87 * (.e.g. little/big endian difference in the structure.) 88 */ 89struct ifreq ifr; 90 91char name[IFNAMSIZ]; 92char *descr = NULL; 93size_t descrlen = 64; 94int setaddr; 95int setmask; 96int doalias; 97int clearaddr; 98int newaddr = 1; 99int verbose; 100int noload; 101int printifname = 0; 102 103int supmedia = 0; 104int printkeys = 0; /* Print keying material for interfaces. */ 105int exit_code = 0; 106 107/* Formatter Strings */ 108char *f_inet, *f_inet6, *f_ether, *f_addr; 109 110static bool group_member(const char *ifname, const char *match, 111 const char *nomatch); 112static int ifconfig(int argc, char *const *argv, int iscreate, 113 const struct afswtch *afp); 114static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 115 struct ifaddrs *ifa); 116static void tunnel_status(int s); 117static _Noreturn void usage(void); 118 119static int getifflags(const char *ifname, int us); 120 121static struct afswtch *af_getbyname(const char *name); 122static struct afswtch *af_getbyfamily(int af); 123static void af_other_status(int); 124 125void printifnamemaybe(void); 126 127static struct option *opts = NULL; 128 129struct ifa_order_elt { 130 int if_order; 131 int af_orders[255]; 132 struct ifaddrs *ifa; 133 TAILQ_ENTRY(ifa_order_elt) link; 134}; 135 136TAILQ_HEAD(ifa_queue, ifa_order_elt); 137 138static struct module_map_entry { 139 const char *ifname; 140 const char *kldname; 141} module_map[] = { 142 { 143 .ifname = "tun", 144 .kldname = "if_tuntap", 145 }, 146 { 147 .ifname = "tap", 148 .kldname = "if_tuntap", 149 }, 150 { 151 .ifname = "vmnet", 152 .kldname = "if_tuntap", 153 }, 154 { 155 .ifname = "ipsec", 156 .kldname = "ipsec", 157 }, 158 { 159 /* 160 * This mapping exists because there is a conflicting enc module 161 * in CAM. ifconfig's guessing behavior will attempt to match 162 * the ifname to a module as well as if_${ifname} and clash with 163 * CAM enc. This is an assertion of the correct module to load. 164 */ 165 .ifname = "enc", 166 .kldname = "if_enc", 167 }, 168}; 169 170 171void 172opt_register(struct option *p) 173{ 174 p->next = opts; 175 opts = p; 176} 177 178static void 179usage(void) 180{ 181 char options[1024]; 182 struct option *p; 183 184 /* XXX not right but close enough for now */ 185 options[0] = '\0'; 186 for (p = opts; p != NULL; p = p->next) { 187 strlcat(options, p->opt_usage, sizeof(options)); 188 strlcat(options, " ", sizeof(options)); 189 } 190 191 fprintf(stderr, 192 "usage: ifconfig [-f type:format] %sinterface address_family\n" 193 " [address [dest_address]] [parameters]\n" 194 " ifconfig interface create\n" 195 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n" 196 " ifconfig -l [-d] [-u] [address_family]\n" 197 " ifconfig %s[-d] [-m] [-u] [-v]\n", 198 options, options, options); 199 exit(1); 200} 201 202void 203ioctl_ifcreate(int s, struct ifreq *ifr) 204{ 205 if (ioctl(s, SIOCIFCREATE2, ifr) < 0) { 206 switch (errno) { 207 case EEXIST: 208 errx(1, "interface %s already exists", ifr->ifr_name); 209 default: 210 err(1, "SIOCIFCREATE2"); 211 } 212 } 213} 214 215static int 216calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 217{ 218 struct ifaddrs *prev; 219 struct ifa_order_elt *cur; 220 unsigned int ord, af, ifa_ord; 221 222 prev = NULL; 223 cur = NULL; 224 ord = 0; 225 ifa_ord = 0; 226 227 while (ifa != NULL) { 228 if (prev == NULL || 229 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 230 cur = calloc(1, sizeof(*cur)); 231 232 if (cur == NULL) 233 return (-1); 234 235 TAILQ_INSERT_TAIL(q, cur, link); 236 cur->if_order = ifa_ord ++; 237 cur->ifa = ifa; 238 ord = 0; 239 } 240 241 if (ifa->ifa_addr) { 242 af = ifa->ifa_addr->sa_family; 243 244 if (af < nitems(cur->af_orders) && 245 cur->af_orders[af] == 0) 246 cur->af_orders[af] = ++ord; 247 } 248 prev = ifa; 249 ifa = ifa->ifa_next; 250 } 251 252 return (0); 253} 254 255static int 256cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 257{ 258 struct ifa_order_elt *cur, *e1, *e2; 259 unsigned int af1, af2; 260 int ret; 261 262 e1 = e2 = NULL; 263 264 ret = strcmp(a->ifa_name, b->ifa_name); 265 if (ret != 0) { 266 TAILQ_FOREACH(cur, q, link) { 267 if (e1 && e2) 268 break; 269 270 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 271 e1 = cur; 272 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 273 e2 = cur; 274 } 275 276 if (!e1 || !e2) 277 return (0); 278 else 279 return (e1->if_order - e2->if_order); 280 281 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 282 TAILQ_FOREACH(cur, q, link) { 283 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 284 e1 = cur; 285 break; 286 } 287 } 288 289 if (!e1) 290 return (0); 291 292 af1 = a->ifa_addr->sa_family; 293 af2 = b->ifa_addr->sa_family; 294 295 if (af1 < nitems(e1->af_orders) && af2 < nitems(e1->af_orders)) 296 return (e1->af_orders[af1] - e1->af_orders[af2]); 297 } 298 299 return (0); 300} 301 302static void freeformat(void) 303{ 304 305 if (f_inet != NULL) 306 free(f_inet); 307 if (f_inet6 != NULL) 308 free(f_inet6); 309 if (f_ether != NULL) 310 free(f_ether); 311 if (f_addr != NULL) 312 free(f_addr); 313} 314 315static void setformat(char *input) 316{ 317 char *formatstr, *category, *modifier; 318 319 formatstr = strdup(input); 320 while ((category = strsep(&formatstr, ",")) != NULL) { 321 modifier = strchr(category, ':'); 322 if (modifier == NULL || modifier[1] == '\0') { 323 warnx("Skipping invalid format specification: %s\n", 324 category); 325 continue; 326 } 327 328 /* Split the string on the separator, then seek past it */ 329 modifier[0] = '\0'; 330 modifier++; 331 332 if (strcmp(category, "addr") == 0) 333 f_addr = strdup(modifier); 334 else if (strcmp(category, "ether") == 0) 335 f_ether = strdup(modifier); 336 else if (strcmp(category, "inet") == 0) 337 f_inet = strdup(modifier); 338 else if (strcmp(category, "inet6") == 0) 339 f_inet6 = strdup(modifier); 340 } 341 free(formatstr); 342} 343 344static struct ifaddrs * 345sortifaddrs(struct ifaddrs *list, 346 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 347 struct ifa_queue *q) 348{ 349 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 350 351 right = list; 352 temp = list; 353 last = list; 354 result = NULL; 355 next = NULL; 356 tail = NULL; 357 358 if (!list || !list->ifa_next) 359 return (list); 360 361 while (temp && temp->ifa_next) { 362 last = right; 363 right = right->ifa_next; 364 temp = temp->ifa_next->ifa_next; 365 } 366 367 last->ifa_next = NULL; 368 369 list = sortifaddrs(list, compare, q); 370 right = sortifaddrs(right, compare, q); 371 372 while (list || right) { 373 374 if (!right) { 375 next = list; 376 list = list->ifa_next; 377 } else if (!list) { 378 next = right; 379 right = right->ifa_next; 380 } else if (compare(list, right, q) <= 0) { 381 next = list; 382 list = list->ifa_next; 383 } else { 384 next = right; 385 right = right->ifa_next; 386 } 387 388 if (!result) 389 result = next; 390 else 391 tail->ifa_next = next; 392 393 tail = next; 394 } 395 396 return (result); 397} 398 399void printifnamemaybe() 400{ 401 if (printifname) 402 printf("%s\n", name); 403} 404 405int 406main(int argc, char *argv[]) 407{ 408 int c, all, namesonly, downonly, uponly; 409 const struct afswtch *afp = NULL; 410 int ifindex; 411 struct ifaddrs *ifap, *sifap, *ifa; 412 struct ifreq paifr; 413 const struct sockaddr_dl *sdl; 414 char options[1024], *cp, *envformat, *namecp = NULL; 415 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 416 struct ifa_order_elt *cur, *tmp; 417 const char *ifname, *matchgroup, *nogroup; 418 struct option *p; 419 size_t iflen; 420 int flags; 421 422 all = downonly = uponly = namesonly = noload = verbose = 0; 423 f_inet = f_inet6 = f_ether = f_addr = NULL; 424 matchgroup = nogroup = NULL; 425 426 lifh = ifconfig_open(); 427 if (lifh == NULL) 428 err(EXIT_FAILURE, "ifconfig_open"); 429 430 envformat = getenv("IFCONFIG_FORMAT"); 431 if (envformat != NULL) 432 setformat(envformat); 433 434 /* 435 * Ensure we print interface name when expected to, 436 * even if we terminate early due to error. 437 */ 438 atexit(printifnamemaybe); 439 440 /* Parse leading line options */ 441 strlcpy(options, "G:adf:klmnuv", sizeof(options)); 442 for (p = opts; p != NULL; p = p->next) 443 strlcat(options, p->opt, sizeof(options)); 444 while ((c = getopt(argc, argv, options)) != -1) { 445 switch (c) { 446 case 'a': /* scan all interfaces */ 447 all++; 448 break; 449 case 'd': /* restrict scan to "down" interfaces */ 450 downonly++; 451 break; 452 case 'f': 453 if (optarg == NULL) 454 usage(); 455 setformat(optarg); 456 break; 457 case 'G': 458 if (optarg == NULL || all == 0) 459 usage(); 460 nogroup = optarg; 461 break; 462 case 'k': 463 printkeys++; 464 break; 465 case 'l': /* scan interface names only */ 466 namesonly++; 467 break; 468 case 'm': /* show media choices in status */ 469 supmedia = 1; 470 break; 471 case 'n': /* suppress module loading */ 472 noload++; 473 break; 474 case 'u': /* restrict scan to "up" interfaces */ 475 uponly++; 476 break; 477 case 'v': 478 verbose++; 479 break; 480 case 'g': 481 if (all) { 482 if (optarg == NULL) 483 usage(); 484 matchgroup = optarg; 485 break; 486 } 487 /* FALLTHROUGH */ 488 default: 489 for (p = opts; p != NULL; p = p->next) 490 if (p->opt[0] == c) { 491 p->cb(optarg); 492 break; 493 } 494 if (p == NULL) 495 usage(); 496 break; 497 } 498 } 499 argc -= optind; 500 argv += optind; 501 502 /* -l cannot be used with -a or -m */ 503 if (namesonly && (all || supmedia)) 504 usage(); 505 506 /* nonsense.. */ 507 if (uponly && downonly) 508 usage(); 509 510 /* no arguments is equivalent to '-a' */ 511 if (!namesonly && argc < 1) 512 all = 1; 513 514 /* -a and -l allow an address family arg to limit the output */ 515 if (all || namesonly) { 516 if (argc > 1) 517 usage(); 518 519 ifname = NULL; 520 ifindex = 0; 521 if (argc == 1) { 522 afp = af_getbyname(*argv); 523 if (afp == NULL) { 524 warnx("Address family '%s' unknown.", *argv); 525 usage(); 526 } 527 if (afp->af_name != NULL) 528 argc--, argv++; 529 /* leave with afp non-zero */ 530 } 531 } else { 532 /* not listing, need an argument */ 533 if (argc < 1) 534 usage(); 535 536 ifname = *argv; 537 argc--, argv++; 538 539 /* check and maybe load support for this interface */ 540 ifmaybeload(ifname); 541 542 ifindex = if_nametoindex(ifname); 543 if (ifindex == 0) { 544 /* 545 * NOTE: We must special-case the `create' command 546 * right here as we would otherwise fail when trying 547 * to find the interface. 548 */ 549 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 550 strcmp(argv[0], "plumb") == 0)) { 551 iflen = strlcpy(name, ifname, sizeof(name)); 552 if (iflen >= sizeof(name)) 553 errx(1, "%s: cloning name too long", 554 ifname); 555 ifconfig(argc, argv, 1, NULL); 556 exit(exit_code); 557 } 558#ifdef JAIL 559 /* 560 * NOTE: We have to special-case the `-vnet' command 561 * right here as we would otherwise fail when trying 562 * to find the interface as it lives in another vnet. 563 */ 564 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) { 565 iflen = strlcpy(name, ifname, sizeof(name)); 566 if (iflen >= sizeof(name)) 567 errx(1, "%s: interface name too long", 568 ifname); 569 ifconfig(argc, argv, 0, NULL); 570 exit(exit_code); 571 } 572#endif 573 errx(1, "interface %s does not exist", ifname); 574 } else { 575 /* 576 * Do not allow use `create` command as hostname if 577 * address family is not specified. 578 */ 579 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 580 strcmp(argv[0], "plumb") == 0)) { 581 if (argc == 1) 582 errx(1, "interface %s already exists", 583 ifname); 584 argc--, argv++; 585 } 586 } 587 } 588 589 /* Check for address family */ 590 if (argc > 0) { 591 afp = af_getbyname(*argv); 592 if (afp != NULL) 593 argc--, argv++; 594 } 595 596 /* 597 * Check for a requested configuration action on a single interface, 598 * which doesn't require building, sorting, and searching the entire 599 * system address list 600 */ 601 if ((argc > 0) && (ifname != NULL)) { 602 iflen = strlcpy(name, ifname, sizeof(name)); 603 if (iflen >= sizeof(name)) { 604 warnx("%s: interface name too long, skipping", ifname); 605 } else { 606 flags = getifflags(name, -1); 607 if (!(((flags & IFF_CANTCONFIG) != 0) || 608 (downonly && (flags & IFF_UP) != 0) || 609 (uponly && (flags & IFF_UP) == 0))) 610 ifconfig(argc, argv, 0, afp); 611 } 612 goto done; 613 } 614 615 if (getifaddrs(&ifap) != 0) 616 err(EXIT_FAILURE, "getifaddrs"); 617 618 cp = NULL; 619 620 if (calcorders(ifap, &q) != 0) 621 err(EXIT_FAILURE, "calcorders"); 622 623 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 624 625 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 626 free(cur); 627 628 ifindex = 0; 629 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 630 memset(&paifr, 0, sizeof(paifr)); 631 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 632 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 633 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 634 ifa->ifa_addr->sa_len); 635 } 636 637 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0) 638 continue; 639 if (ifa->ifa_addr->sa_family == AF_LINK) 640 sdl = (const struct sockaddr_dl *) ifa->ifa_addr; 641 else 642 sdl = NULL; 643 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly) 644 continue; 645 iflen = strlcpy(name, ifa->ifa_name, sizeof(name)); 646 if (iflen >= sizeof(name)) { 647 warnx("%s: interface name too long, skipping", 648 ifa->ifa_name); 649 continue; 650 } 651 cp = ifa->ifa_name; 652 653 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0) 654 continue; 655 if (downonly && (ifa->ifa_flags & IFF_UP) != 0) 656 continue; 657 if (uponly && (ifa->ifa_flags & IFF_UP) == 0) 658 continue; 659 if (!group_member(ifa->ifa_name, matchgroup, nogroup)) 660 continue; 661 /* 662 * Are we just listing the interfaces? 663 */ 664 if (namesonly) { 665 if (namecp == cp) 666 continue; 667 if (afp != NULL) { 668 /* special case for "ether" address family */ 669 if (!strcmp(afp->af_name, "ether")) { 670 if (sdl == NULL || 671 (sdl->sdl_type != IFT_ETHER && 672 sdl->sdl_type != IFT_L2VLAN && 673 sdl->sdl_type != IFT_BRIDGE) || 674 sdl->sdl_alen != ETHER_ADDR_LEN) 675 continue; 676 } else { 677 if (ifa->ifa_addr->sa_family 678 != afp->af_af) 679 continue; 680 } 681 } 682 namecp = cp; 683 ifindex++; 684 if (ifindex > 1) 685 printf(" "); 686 fputs(name, stdout); 687 continue; 688 } 689 ifindex++; 690 691 if (argc > 0) 692 ifconfig(argc, argv, 0, afp); 693 else 694 status(afp, sdl, ifa); 695 } 696 if (namesonly) 697 printf("\n"); 698 freeifaddrs(ifap); 699 700done: 701 freeformat(); 702 ifconfig_close(lifh); 703 exit(exit_code); 704} 705 706/* 707 * Returns true if an interface should be listed because any its groups 708 * matches shell pattern "match" and none of groups matches pattern "nomatch". 709 * If any pattern is NULL, corresponding condition is skipped. 710 */ 711static bool 712group_member(const char *ifname, const char *match, const char *nomatch) 713{ 714 static int sock = -1; 715 716 struct ifgroupreq ifgr; 717 struct ifg_req *ifg; 718 int len; 719 bool matched, nomatched; 720 721 /* Sanity checks. */ 722 if (match == NULL && nomatch == NULL) 723 return (true); 724 if (ifname == NULL) 725 return (false); 726 727 memset(&ifgr, 0, sizeof(ifgr)); 728 strlcpy(ifgr.ifgr_name, ifname, IFNAMSIZ); 729 730 /* The socket is opened once. Let _exit() close it. */ 731 if (sock == -1) { 732 sock = socket(AF_LOCAL, SOCK_DGRAM, 0); 733 if (sock == -1) 734 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__); 735 } 736 737 /* Determine amount of memory for the list of groups. */ 738 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) { 739 if (errno == EINVAL || errno == ENOTTY) 740 return (false); 741 else 742 errx(1, "%s: SIOCGIFGROUP", __func__); 743 } 744 745 /* Obtain the list of groups. */ 746 len = ifgr.ifgr_len; 747 ifgr.ifgr_groups = 748 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg)); 749 750 if (ifgr.ifgr_groups == NULL) 751 errx(1, "%s: no memory", __func__); 752 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 753 errx(1, "%s: SIOCGIFGROUP", __func__); 754 755 /* Perform matching. */ 756 matched = false; 757 nomatched = true; 758 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) { 759 len -= sizeof(struct ifg_req); 760 if (match) 761 matched |= !fnmatch(match, ifg->ifgrq_group, 0); 762 if (nomatch) 763 nomatched &= fnmatch(nomatch, ifg->ifgrq_group, 0); 764 } 765 free(ifgr.ifgr_groups); 766 767 if (match && !nomatch) 768 return (matched); 769 if (!match && nomatch) 770 return (nomatched); 771 return (matched && nomatched); 772} 773 774static struct afswtch *afs = NULL; 775 776void 777af_register(struct afswtch *p) 778{ 779 p->af_next = afs; 780 afs = p; 781} 782 783static struct afswtch * 784af_getbyname(const char *name) 785{ 786 struct afswtch *afp; 787 788 for (afp = afs; afp != NULL; afp = afp->af_next) 789 if (strcmp(afp->af_name, name) == 0) 790 return afp; 791 return NULL; 792} 793 794static struct afswtch * 795af_getbyfamily(int af) 796{ 797 struct afswtch *afp; 798 799 for (afp = afs; afp != NULL; afp = afp->af_next) 800 if (afp->af_af == af) 801 return afp; 802 return NULL; 803} 804 805static void 806af_other_status(int s) 807{ 808 struct afswtch *afp; 809 uint8_t afmask[howmany(AF_MAX, NBBY)]; 810 811 memset(afmask, 0, sizeof(afmask)); 812 for (afp = afs; afp != NULL; afp = afp->af_next) { 813 if (afp->af_other_status == NULL) 814 continue; 815 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 816 continue; 817 afp->af_other_status(s); 818 setbit(afmask, afp->af_af); 819 } 820} 821 822static void 823af_all_tunnel_status(int s) 824{ 825 struct afswtch *afp; 826 uint8_t afmask[howmany(AF_MAX, NBBY)]; 827 828 memset(afmask, 0, sizeof(afmask)); 829 for (afp = afs; afp != NULL; afp = afp->af_next) { 830 if (afp->af_status_tunnel == NULL) 831 continue; 832 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 833 continue; 834 afp->af_status_tunnel(s); 835 setbit(afmask, afp->af_af); 836 } 837} 838 839static struct cmd *cmds = NULL; 840 841void 842cmd_register(struct cmd *p) 843{ 844 p->c_next = cmds; 845 cmds = p; 846} 847 848static const struct cmd * 849cmd_lookup(const char *name, int iscreate) 850{ 851 const struct cmd *p; 852 853 for (p = cmds; p != NULL; p = p->c_next) 854 if (strcmp(name, p->c_name) == 0) { 855 if (iscreate) { 856 if (p->c_iscloneop) 857 return p; 858 } else { 859 if (!p->c_iscloneop) 860 return p; 861 } 862 } 863 return NULL; 864} 865 866struct callback { 867 callback_func *cb_func; 868 void *cb_arg; 869 struct callback *cb_next; 870}; 871static struct callback *callbacks = NULL; 872 873void 874callback_register(callback_func *func, void *arg) 875{ 876 struct callback *cb; 877 878 cb = malloc(sizeof(struct callback)); 879 if (cb == NULL) 880 errx(1, "unable to allocate memory for callback"); 881 cb->cb_func = func; 882 cb->cb_arg = arg; 883 cb->cb_next = callbacks; 884 callbacks = cb; 885} 886 887/* specially-handled commands */ 888static void setifaddr(const char *, int, int, const struct afswtch *); 889static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 890 891static void setifdstaddr(const char *, int, int, const struct afswtch *); 892static const struct cmd setifdstaddr_cmd = 893 DEF_CMD("ifdstaddr", 0, setifdstaddr); 894 895static int 896ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp) 897{ 898 const struct afswtch *afp, *nafp; 899 const struct cmd *p; 900 struct callback *cb; 901 int s; 902 903 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 904 afp = NULL; 905 if (uafp != NULL) 906 afp = uafp; 907 /* 908 * This is the historical "accident" allowing users to configure IPv4 909 * addresses without the "inet" keyword which while a nice feature has 910 * proven to complicate other things. We cannot remove this but only 911 * make sure we will never have a similar implicit default for IPv6 or 912 * any other address familiy. We need a fallback though for 913 * ifconfig IF up/down etc. to work without INET support as people 914 * never used ifconfig IF link up/down, etc. either. 915 */ 916#ifndef RESCUE 917#ifdef INET 918 if (afp == NULL && feature_present("inet")) 919 afp = af_getbyname("inet"); 920#endif 921#endif 922 if (afp == NULL) 923 afp = af_getbyname("link"); 924 if (afp == NULL) { 925 warnx("Please specify an address_family."); 926 usage(); 927 } 928top: 929 ifr.ifr_addr.sa_family = 930 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 931 AF_LOCAL : afp->af_af; 932 933 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 934 (uafp != NULL || errno != EAFNOSUPPORT || 935 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 936 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 937 938 while (argc > 0) { 939 p = cmd_lookup(*argv, iscreate); 940 if (iscreate && p == NULL) { 941 /* 942 * Push the clone create callback so the new 943 * device is created and can be used for any 944 * remaining arguments. 945 */ 946 cb = callbacks; 947 if (cb == NULL) 948 errx(1, "internal error, no callback"); 949 callbacks = cb->cb_next; 950 cb->cb_func(s, cb->cb_arg); 951 iscreate = 0; 952 /* 953 * Handle any address family spec that 954 * immediately follows and potentially 955 * recreate the socket. 956 */ 957 nafp = af_getbyname(*argv); 958 if (nafp != NULL) { 959 argc--, argv++; 960 if (nafp != afp) { 961 close(s); 962 afp = nafp; 963 goto top; 964 } 965 } 966 /* 967 * Look for a normal parameter. 968 */ 969 continue; 970 } 971 if (p == NULL) { 972 /* 973 * Not a recognized command, choose between setting 974 * the interface address and the dst address. 975 */ 976 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 977 } 978 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 979 if (argv[1] == NULL) 980 errx(1, "'%s' requires argument", 981 p->c_name); 982 p->c_u.c_func(argv[1], 0, s, afp); 983 argc--, argv++; 984 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 985 p->c_u.c_func(argv[1], 0, s, afp); 986 if (argv[1] != NULL) 987 argc--, argv++; 988 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 989 if (argc < 3) 990 errx(1, "'%s' requires 2 arguments", 991 p->c_name); 992 p->c_u.c_func2(argv[1], argv[2], s, afp); 993 argc -= 2, argv += 2; 994 } else if (p->c_u.c_func) 995 p->c_u.c_func(*argv, p->c_parameter, s, afp); 996 argc--, argv++; 997 } 998 999 /* 1000 * Do any post argument processing required by the address family. 1001 */ 1002 if (afp->af_postproc != NULL) 1003 afp->af_postproc(s, afp); 1004 /* 1005 * Do deferred callbacks registered while processing 1006 * command-line arguments. 1007 */ 1008 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 1009 cb->cb_func(s, cb->cb_arg); 1010 /* 1011 * Do deferred operations. 1012 */ 1013 if (clearaddr) { 1014 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) { 1015 warnx("interface %s cannot change %s addresses!", 1016 name, afp->af_name); 1017 clearaddr = 0; 1018 } 1019 } 1020 if (clearaddr) { 1021 int ret; 1022 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name, 1023 sizeof ifr.ifr_name); 1024 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq); 1025 if (ret < 0) { 1026 if (errno == EADDRNOTAVAIL && (doalias >= 0)) { 1027 /* means no previous address for interface */ 1028 } else 1029 Perror("ioctl (SIOCDIFADDR)"); 1030 } 1031 } 1032 if (newaddr) { 1033 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) { 1034 warnx("interface %s cannot change %s addresses!", 1035 name, afp->af_name); 1036 newaddr = 0; 1037 } 1038 } 1039 if (newaddr && (setaddr || setmask)) { 1040 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name, 1041 sizeof ifr.ifr_name); 1042 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0) 1043 Perror("ioctl (SIOCAIFADDR)"); 1044 } 1045 1046 close(s); 1047 return(0); 1048} 1049 1050/*ARGSUSED*/ 1051static void 1052setifaddr(const char *addr, int param, int s, const struct afswtch *afp) 1053{ 1054 if (afp->af_getaddr == NULL) 1055 return; 1056 /* 1057 * Delay the ioctl to set the interface addr until flags are all set. 1058 * The address interpretation may depend on the flags, 1059 * and the flags may change when the address is set. 1060 */ 1061 setaddr++; 1062 if (doalias == 0 && afp->af_af != AF_LINK) 1063 clearaddr = 1; 1064 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 1065} 1066 1067static void 1068settunnel(const char *src, const char *dst, int s, const struct afswtch *afp) 1069{ 1070 struct addrinfo *srcres, *dstres; 1071 int ecode; 1072 1073 if (afp->af_settunnel == NULL) { 1074 warn("address family %s does not support tunnel setup", 1075 afp->af_name); 1076 return; 1077 } 1078 1079 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 1080 errx(1, "error in parsing address string: %s", 1081 gai_strerror(ecode)); 1082 1083 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 1084 errx(1, "error in parsing address string: %s", 1085 gai_strerror(ecode)); 1086 1087 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 1088 errx(1, 1089 "source and destination address families do not match"); 1090 1091 afp->af_settunnel(s, srcres, dstres); 1092 1093 freeaddrinfo(srcres); 1094 freeaddrinfo(dstres); 1095} 1096 1097/* ARGSUSED */ 1098static void 1099deletetunnel(const char *vname, int param, int s, const struct afswtch *afp) 1100{ 1101 1102 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0) 1103 err(1, "SIOCDIFPHYADDR"); 1104} 1105 1106#ifdef JAIL 1107static void 1108setifvnet(const char *jname, int dummy __unused, int s, 1109 const struct afswtch *afp) 1110{ 1111 struct ifreq my_ifr; 1112 1113 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1114 my_ifr.ifr_jid = jail_getid(jname); 1115 if (my_ifr.ifr_jid < 0) 1116 errx(1, "%s", jail_errmsg); 1117 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0) 1118 err(1, "SIOCSIFVNET"); 1119} 1120 1121static void 1122setifrvnet(const char *jname, int dummy __unused, int s, 1123 const struct afswtch *afp) 1124{ 1125 struct ifreq my_ifr; 1126 1127 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1128 my_ifr.ifr_jid = jail_getid(jname); 1129 if (my_ifr.ifr_jid < 0) 1130 errx(1, "%s", jail_errmsg); 1131 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0) 1132 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name); 1133} 1134#endif 1135 1136static void 1137setifnetmask(const char *addr, int dummy __unused, int s, 1138 const struct afswtch *afp) 1139{ 1140 if (afp->af_getaddr != NULL) { 1141 setmask++; 1142 afp->af_getaddr(addr, MASK); 1143 } 1144} 1145 1146static void 1147setifbroadaddr(const char *addr, int dummy __unused, int s, 1148 const struct afswtch *afp) 1149{ 1150 if (afp->af_getaddr != NULL) 1151 afp->af_getaddr(addr, DSTADDR); 1152} 1153 1154static void 1155notealias(const char *addr, int param, int s, const struct afswtch *afp) 1156{ 1157#define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) 1158 if (setaddr && doalias == 0 && param < 0) 1159 if (afp->af_addreq != NULL && afp->af_ridreq != NULL) 1160 bcopy((caddr_t)rqtosa(af_addreq), 1161 (caddr_t)rqtosa(af_ridreq), 1162 rqtosa(af_addreq)->sa_len); 1163 doalias = param; 1164 if (param < 0) { 1165 clearaddr = 1; 1166 newaddr = 0; 1167 } else 1168 clearaddr = 0; 1169#undef rqtosa 1170} 1171 1172/*ARGSUSED*/ 1173static void 1174setifdstaddr(const char *addr, int param __unused, int s, 1175 const struct afswtch *afp) 1176{ 1177 if (afp->af_getaddr != NULL) 1178 afp->af_getaddr(addr, DSTADDR); 1179} 1180 1181static int 1182getifflags(const char *ifname, int us) 1183{ 1184 struct ifreq my_ifr; 1185 int s; 1186 1187 memset(&my_ifr, 0, sizeof(my_ifr)); 1188 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1189 if (us < 0) { 1190 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1191 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1192 } else 1193 s = us; 1194 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1195 Perror("ioctl (SIOCGIFFLAGS)"); 1196 exit(1); 1197 } 1198 if (us < 0) 1199 close(s); 1200 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1201} 1202 1203/* 1204 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1205 * of the ifreq structure, which may confuse other parts of ifconfig. 1206 * Make a private copy so we can avoid that. 1207 */ 1208static void 1209setifflags(const char *vname, int value, int s, const struct afswtch *afp) 1210{ 1211 struct ifreq my_ifr; 1212 int flags; 1213 1214 flags = getifflags(name, s); 1215 if (value < 0) { 1216 value = -value; 1217 flags &= ~value; 1218 } else 1219 flags |= value; 1220 memset(&my_ifr, 0, sizeof(my_ifr)); 1221 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); 1222 my_ifr.ifr_flags = flags & 0xffff; 1223 my_ifr.ifr_flagshigh = flags >> 16; 1224 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1225 Perror(vname); 1226} 1227 1228void 1229setifcap(const char *vname, int value, int s, const struct afswtch *afp) 1230{ 1231 int flags; 1232 1233 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) { 1234 Perror("ioctl (SIOCGIFCAP)"); 1235 exit(1); 1236 } 1237 flags = ifr.ifr_curcap; 1238 if (value < 0) { 1239 value = -value; 1240 flags &= ~value; 1241 } else 1242 flags |= value; 1243 flags &= ifr.ifr_reqcap; 1244 ifr.ifr_reqcap = flags; 1245 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0) 1246 Perror(vname); 1247} 1248 1249static void 1250setifmetric(const char *val, int dummy __unused, int s, 1251 const struct afswtch *afp) 1252{ 1253 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1254 ifr.ifr_metric = atoi(val); 1255 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) 1256 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1257} 1258 1259static void 1260setifmtu(const char *val, int dummy __unused, int s, 1261 const struct afswtch *afp) 1262{ 1263 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1264 ifr.ifr_mtu = atoi(val); 1265 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) 1266 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1267} 1268 1269static void 1270setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp) 1271{ 1272 u_long ul; 1273 char *endp; 1274 1275 ul = strtoul(val, &endp, 0); 1276 if (*endp != '\0') 1277 errx(1, "invalid value for pcp"); 1278 if (ul > 7) 1279 errx(1, "value for pcp out of range"); 1280 ifr.ifr_lan_pcp = ul; 1281 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1282 err(1, "SIOCSLANPCP"); 1283} 1284 1285static void 1286disableifpcp(const char *val, int arg __unused, int s, 1287 const struct afswtch *afp) 1288{ 1289 1290 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1291 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1292 err(1, "SIOCSLANPCP"); 1293} 1294 1295static void 1296setifname(const char *val, int dummy __unused, int s, 1297 const struct afswtch *afp) 1298{ 1299 char *newname; 1300 1301 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1302 1303 newname = strdup(val); 1304 if (newname == NULL) 1305 err(1, "no memory to set ifname"); 1306 ifr.ifr_data = newname; 1307 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1308 free(newname); 1309 err(1, "ioctl SIOCSIFNAME (set name)"); 1310 } 1311 printifname = 1; 1312 strlcpy(name, newname, sizeof(name)); 1313 free(newname); 1314} 1315 1316/* ARGSUSED */ 1317static void 1318setifdescr(const char *val, int dummy __unused, int s, 1319 const struct afswtch *afp) 1320{ 1321 char *newdescr; 1322 1323 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1324 1325 ifr.ifr_buffer.length = strlen(val) + 1; 1326 if (ifr.ifr_buffer.length == 1) { 1327 ifr.ifr_buffer.buffer = newdescr = NULL; 1328 ifr.ifr_buffer.length = 0; 1329 } else { 1330 newdescr = strdup(val); 1331 ifr.ifr_buffer.buffer = newdescr; 1332 if (newdescr == NULL) { 1333 warn("no memory to set ifdescr"); 1334 return; 1335 } 1336 } 1337 1338 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) 1339 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1340 1341 free(newdescr); 1342} 1343 1344/* ARGSUSED */ 1345static void 1346unsetifdescr(const char *val, int value, int s, const struct afswtch *afp) 1347{ 1348 1349 setifdescr("", 0, s, 0); 1350} 1351 1352#define IFFBITS \ 1353"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1354"\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1355"\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP" 1356 1357#define IFCAPBITS \ 1358"\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1359"\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1360"\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1361"\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" \ 1362"\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT" 1363 1364/* 1365 * Print the status of the interface. If an address family was 1366 * specified, show only it; otherwise, show them all. 1367 */ 1368static void 1369status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 1370 struct ifaddrs *ifa) 1371{ 1372 struct ifaddrs *ift; 1373 int allfamilies, s; 1374 struct ifstat ifs; 1375 1376 if (afp == NULL) { 1377 allfamilies = 1; 1378 ifr.ifr_addr.sa_family = AF_LOCAL; 1379 } else { 1380 allfamilies = 0; 1381 ifr.ifr_addr.sa_family = 1382 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af; 1383 } 1384 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1385 1386 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1387 if (s < 0) 1388 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1389 1390 printf("%s: ", name); 1391 printb("flags", ifa->ifa_flags, IFFBITS); 1392 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1) 1393 printf(" metric %d", ifr.ifr_metric); 1394 if (ioctl(s, SIOCGIFMTU, &ifr) != -1) 1395 printf(" mtu %d", ifr.ifr_mtu); 1396 putchar('\n'); 1397 1398 for (;;) { 1399 if ((descr = reallocf(descr, descrlen)) != NULL) { 1400 ifr.ifr_buffer.buffer = descr; 1401 ifr.ifr_buffer.length = descrlen; 1402 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) { 1403 if (ifr.ifr_buffer.buffer == descr) { 1404 if (strlen(descr) > 0) 1405 printf("\tdescription: %s\n", 1406 descr); 1407 } else if (ifr.ifr_buffer.length > descrlen) { 1408 descrlen = ifr.ifr_buffer.length; 1409 continue; 1410 } 1411 } 1412 } else 1413 warn("unable to allocate memory for interface" 1414 "description"); 1415 break; 1416 } 1417 1418 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) { 1419 if (ifr.ifr_curcap != 0) { 1420 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1421 putchar('\n'); 1422 } 1423 if (supmedia && ifr.ifr_reqcap != 0) { 1424 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS); 1425 putchar('\n'); 1426 } 1427 } 1428 1429 tunnel_status(s); 1430 1431 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1432 if (ift->ifa_addr == NULL) 1433 continue; 1434 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1435 continue; 1436 if (allfamilies) { 1437 const struct afswtch *p; 1438 p = af_getbyfamily(ift->ifa_addr->sa_family); 1439 if (p != NULL && p->af_status != NULL) 1440 p->af_status(s, ift); 1441 } else if (afp->af_af == ift->ifa_addr->sa_family) 1442 afp->af_status(s, ift); 1443 } 1444#if 0 1445 if (allfamilies || afp->af_af == AF_LINK) { 1446 const struct afswtch *lafp; 1447 1448 /* 1449 * Hack; the link level address is received separately 1450 * from the routing information so any address is not 1451 * handled above. Cobble together an entry and invoke 1452 * the status method specially. 1453 */ 1454 lafp = af_getbyname("lladdr"); 1455 if (lafp != NULL) { 1456 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1457 lafp->af_status(s, &info); 1458 } 1459 } 1460#endif 1461 if (allfamilies) 1462 af_other_status(s); 1463 else if (afp->af_other_status != NULL) 1464 afp->af_other_status(s); 1465 1466 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name); 1467 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0) 1468 printf("%s", ifs.ascii); 1469 1470 if (verbose > 0) 1471 sfp_status(s, &ifr, verbose); 1472 1473 close(s); 1474 return; 1475} 1476 1477static void 1478tunnel_status(int s) 1479{ 1480 af_all_tunnel_status(s); 1481} 1482 1483void 1484Perror(const char *cmd) 1485{ 1486 switch (errno) { 1487 1488 case ENXIO: 1489 errx(1, "%s: no such interface", cmd); 1490 break; 1491 1492 case EPERM: 1493 errx(1, "%s: permission denied", cmd); 1494 break; 1495 1496 default: 1497 err(1, "%s", cmd); 1498 } 1499} 1500 1501/* 1502 * Print a value a la the %b format of the kernel's printf 1503 */ 1504void 1505printb(const char *s, unsigned v, const char *bits) 1506{ 1507 int i, any = 0; 1508 char c; 1509 1510 if (bits && *bits == 8) 1511 printf("%s=%o", s, v); 1512 else 1513 printf("%s=%x", s, v); 1514 if (bits) { 1515 bits++; 1516 putchar('<'); 1517 while ((i = *bits++) != '\0') { 1518 if (v & (1u << (i-1))) { 1519 if (any) 1520 putchar(','); 1521 any = 1; 1522 for (; (c = *bits) > 32; bits++) 1523 putchar(c); 1524 } else 1525 for (; *bits > 32; bits++) 1526 ; 1527 } 1528 putchar('>'); 1529 } 1530} 1531 1532void 1533print_vhid(const struct ifaddrs *ifa, const char *s) 1534{ 1535 struct if_data *ifd; 1536 1537 if (ifa->ifa_data == NULL) 1538 return; 1539 1540 ifd = ifa->ifa_data; 1541 if (ifd->ifi_vhid == 0) 1542 return; 1543 1544 printf(" vhid %d", ifd->ifi_vhid); 1545} 1546 1547void 1548ifmaybeload(const char *name) 1549{ 1550#define MOD_PREFIX_LEN 3 /* "if_" */ 1551 struct module_stat mstat; 1552 int i, fileid, modid; 1553 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp; 1554 const char *cp; 1555 struct module_map_entry *mme; 1556 bool found; 1557 1558 /* loading suppressed by the user */ 1559 if (noload) 1560 return; 1561 1562 /* trim the interface number off the end */ 1563 strlcpy(ifname, name, sizeof(ifname)); 1564 for (dp = ifname; *dp != 0; dp++) 1565 if (isdigit(*dp)) { 1566 *dp = 0; 1567 break; 1568 } 1569 1570 /* Either derive it from the map or guess otherwise */ 1571 *ifkind = '\0'; 1572 found = false; 1573 for (i = 0; i < nitems(module_map); ++i) { 1574 mme = &module_map[i]; 1575 if (strcmp(mme->ifname, ifname) == 0) { 1576 strlcpy(ifkind, mme->kldname, sizeof(ifkind)); 1577 found = true; 1578 break; 1579 } 1580 } 1581 1582 /* We didn't have an alias for it... we'll guess. */ 1583 if (!found) { 1584 /* turn interface and unit into module name */ 1585 strlcpy(ifkind, "if_", sizeof(ifkind)); 1586 strlcat(ifkind, ifname, sizeof(ifkind)); 1587 } 1588 1589 /* scan files in kernel */ 1590 mstat.version = sizeof(struct module_stat); 1591 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1592 /* scan modules in file */ 1593 for (modid = kldfirstmod(fileid); modid > 0; 1594 modid = modfnext(modid)) { 1595 if (modstat(modid, &mstat) < 0) 1596 continue; 1597 /* strip bus name if present */ 1598 if ((cp = strchr(mstat.name, '/')) != NULL) { 1599 cp++; 1600 } else { 1601 cp = mstat.name; 1602 } 1603 /* 1604 * Is it already loaded? Don't compare with ifname if 1605 * we were specifically told which kld to use. Doing 1606 * so could lead to conflicts not trivially solved. 1607 */ 1608 if ((!found && strcmp(ifname, cp) == 0) || 1609 strcmp(ifkind, cp) == 0) 1610 return; 1611 } 1612 } 1613 1614 /* 1615 * Try to load the module. But ignore failures, because ifconfig can't 1616 * infer the names of all drivers (eg mlx4en(4)). 1617 */ 1618 (void) kldload(ifkind); 1619} 1620 1621static struct cmd basic_cmds[] = { 1622 DEF_CMD("up", IFF_UP, setifflags), 1623 DEF_CMD("down", -IFF_UP, setifflags), 1624 DEF_CMD("arp", -IFF_NOARP, setifflags), 1625 DEF_CMD("-arp", IFF_NOARP, setifflags), 1626 DEF_CMD("debug", IFF_DEBUG, setifflags), 1627 DEF_CMD("-debug", -IFF_DEBUG, setifflags), 1628 DEF_CMD_ARG("description", setifdescr), 1629 DEF_CMD_ARG("descr", setifdescr), 1630 DEF_CMD("-description", 0, unsetifdescr), 1631 DEF_CMD("-descr", 0, unsetifdescr), 1632 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 1633 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags), 1634 DEF_CMD("add", IFF_UP, notealias), 1635 DEF_CMD("alias", IFF_UP, notealias), 1636 DEF_CMD("-alias", -IFF_UP, notealias), 1637 DEF_CMD("delete", -IFF_UP, notealias), 1638 DEF_CMD("remove", -IFF_UP, notealias), 1639#ifdef notdef 1640#define EN_SWABIPS 0x1000 1641 DEF_CMD("swabips", EN_SWABIPS, setifflags), 1642 DEF_CMD("-swabips", -EN_SWABIPS, setifflags), 1643#endif 1644 DEF_CMD_ARG("netmask", setifnetmask), 1645 DEF_CMD_ARG("metric", setifmetric), 1646 DEF_CMD_ARG("broadcast", setifbroadaddr), 1647 DEF_CMD_ARG2("tunnel", settunnel), 1648 DEF_CMD("-tunnel", 0, deletetunnel), 1649 DEF_CMD("deletetunnel", 0, deletetunnel), 1650#ifdef JAIL 1651 DEF_CMD_ARG("vnet", setifvnet), 1652 DEF_CMD_ARG("-vnet", setifrvnet), 1653#endif 1654 DEF_CMD("link0", IFF_LINK0, setifflags), 1655 DEF_CMD("-link0", -IFF_LINK0, setifflags), 1656 DEF_CMD("link1", IFF_LINK1, setifflags), 1657 DEF_CMD("-link1", -IFF_LINK1, setifflags), 1658 DEF_CMD("link2", IFF_LINK2, setifflags), 1659 DEF_CMD("-link2", -IFF_LINK2, setifflags), 1660 DEF_CMD("monitor", IFF_MONITOR, setifflags), 1661 DEF_CMD("-monitor", -IFF_MONITOR, setifflags), 1662 DEF_CMD("mextpg", IFCAP_MEXTPG, setifcap), 1663 DEF_CMD("-mextpg", -IFCAP_MEXTPG, setifcap), 1664 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 1665 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags), 1666 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 1667 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap), 1668 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 1669 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap), 1670 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 1671 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap), 1672 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 1673 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap), 1674 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 1675 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap), 1676 DEF_CMD_ARG("pcp", setifpcp), 1677 DEF_CMD("-pcp", 0, disableifpcp), 1678 DEF_CMD("polling", IFCAP_POLLING, setifcap), 1679 DEF_CMD("-polling", -IFCAP_POLLING, setifcap), 1680 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 1681 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap), 1682 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 1683 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap), 1684 DEF_CMD("tso", IFCAP_TSO, setifcap), 1685 DEF_CMD("-tso", -IFCAP_TSO, setifcap), 1686 DEF_CMD("toe", IFCAP_TOE, setifcap), 1687 DEF_CMD("-toe", -IFCAP_TOE, setifcap), 1688 DEF_CMD("lro", IFCAP_LRO, setifcap), 1689 DEF_CMD("-lro", -IFCAP_LRO, setifcap), 1690 DEF_CMD("txtls", IFCAP_TXTLS, setifcap), 1691 DEF_CMD("-txtls", -IFCAP_TXTLS, setifcap), 1692 DEF_CMD("wol", IFCAP_WOL, setifcap), 1693 DEF_CMD("-wol", -IFCAP_WOL, setifcap), 1694 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 1695 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap), 1696 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 1697 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap), 1698 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 1699 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap), 1700 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 1701 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap), 1702 DEF_CMD("txtlsrtlmt", IFCAP_TXTLS_RTLMT, setifcap), 1703 DEF_CMD("-txtlsrtlmt", -IFCAP_TXTLS_RTLMT, setifcap), 1704 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 1705 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap), 1706 DEF_CMD("normal", -IFF_LINK0, setifflags), 1707 DEF_CMD("compress", IFF_LINK0, setifflags), 1708 DEF_CMD("noicmp", IFF_LINK1, setifflags), 1709 DEF_CMD_ARG("mtu", setifmtu), 1710 DEF_CMD_ARG("name", setifname), 1711}; 1712 1713static __constructor void 1714ifconfig_ctor(void) 1715{ 1716 size_t i; 1717 1718 for (i = 0; i < nitems(basic_cmds); i++) 1719 cmd_register(&basic_cmds[i]); 1720} 1721