ifconfig.c revision 1.215
1/* $NetBSD: ifconfig.c,v 1.215 2009/04/04 17:10:19 plunky Exp $ */ 2 3/*- 4 * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1983, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 */ 61 62#include <sys/cdefs.h> 63#ifndef lint 64__COPYRIGHT("@(#) Copyright (c) 1983, 1993\ 65 The Regents of the University of California. All rights reserved."); 66__RCSID("$NetBSD: ifconfig.c,v 1.215 2009/04/04 17:10:19 plunky Exp $"); 67#endif /* not lint */ 68 69#include <sys/param.h> 70#include <sys/queue.h> 71#include <sys/socket.h> 72#include <sys/ioctl.h> 73 74#include <net/if.h> 75#include <net/if_dl.h> 76#include <net/if_media.h> 77#include <net/if_ether.h> 78#include <netinet/in.h> /* XXX */ 79#include <netinet/in_var.h> /* XXX */ 80 81#include <netdb.h> 82 83#include <sys/protosw.h> 84 85#include <assert.h> 86#include <ctype.h> 87#include <err.h> 88#include <errno.h> 89#include <stdbool.h> 90#include <stddef.h> 91#include <stdio.h> 92#include <stdlib.h> 93#include <string.h> 94#include <unistd.h> 95#include <ifaddrs.h> 96#include <util.h> 97 98#include "extern.h" 99 100#include "media.h" 101#include "parse.h" 102#include "env.h" 103 104static bool bflag, dflag, hflag, sflag, uflag; 105bool lflag, vflag, zflag; 106 107static char gflags[10 + 26 * 2 + 1] = "AabCdhlsuvz"; 108bool gflagset[10 + 26 * 2]; 109 110static int carrier(prop_dictionary_t); 111static int clone_command(prop_dictionary_t, prop_dictionary_t); 112static void do_setifpreference(prop_dictionary_t); 113static int flag_index(int); 114static void init_afs(void); 115static int list_cloners(prop_dictionary_t, prop_dictionary_t); 116static int media_status_exec(prop_dictionary_t, prop_dictionary_t); 117static int no_cmds_exec(prop_dictionary_t, prop_dictionary_t); 118static int notrailers(prop_dictionary_t, prop_dictionary_t); 119static void printall(const char *, prop_dictionary_t); 120static int setifaddr(prop_dictionary_t, prop_dictionary_t); 121static int setifbroadaddr(prop_dictionary_t, prop_dictionary_t); 122static int setifcaps(prop_dictionary_t, prop_dictionary_t); 123static int setifdstormask(prop_dictionary_t, prop_dictionary_t); 124static int setifflags(prop_dictionary_t, prop_dictionary_t); 125static int setifmetric(prop_dictionary_t, prop_dictionary_t); 126static int setifmtu(prop_dictionary_t, prop_dictionary_t); 127static int setifnetmask(prop_dictionary_t, prop_dictionary_t); 128static int setifprefixlen(prop_dictionary_t, prop_dictionary_t); 129static void status(const struct sockaddr_dl *, prop_dictionary_t, 130 prop_dictionary_t); 131static void usage(void); 132 133static const struct kwinst ifflagskw[] = { 134 IFKW("arp", -IFF_NOARP) 135 , IFKW("debug", IFF_DEBUG) 136 , IFKW("link0", IFF_LINK0) 137 , IFKW("link1", IFF_LINK1) 138 , IFKW("link2", IFF_LINK2) 139 , {.k_word = "down", .k_type = KW_T_INT, .k_int = -IFF_UP} 140 , {.k_word = "up", .k_type = KW_T_INT, .k_int = IFF_UP} 141}; 142 143static const struct kwinst ifcapskw[] = { 144 IFKW("ip4csum-tx", IFCAP_CSUM_IPv4_Tx) 145 , IFKW("ip4csum-rx", IFCAP_CSUM_IPv4_Rx) 146 , IFKW("tcp4csum-tx", IFCAP_CSUM_TCPv4_Tx) 147 , IFKW("tcp4csum-rx", IFCAP_CSUM_TCPv4_Rx) 148 , IFKW("udp4csum-tx", IFCAP_CSUM_UDPv4_Tx) 149 , IFKW("udp4csum-rx", IFCAP_CSUM_UDPv4_Rx) 150 , IFKW("tcp6csum-tx", IFCAP_CSUM_TCPv6_Tx) 151 , IFKW("tcp6csum-rx", IFCAP_CSUM_TCPv6_Rx) 152 , IFKW("udp6csum-tx", IFCAP_CSUM_UDPv6_Tx) 153 , IFKW("udp6csum-rx", IFCAP_CSUM_UDPv6_Rx) 154 , IFKW("ip4csum", IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx) 155 , IFKW("tcp4csum", IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx) 156 , IFKW("udp4csum", IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx) 157 , IFKW("tcp6csum", IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx) 158 , IFKW("udp6csum", IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx) 159 , IFKW("tso4", IFCAP_TSOv4) 160 , IFKW("tso6", IFCAP_TSOv6) 161}; 162 163extern struct pbranch command_root; 164extern struct pbranch opt_command; 165extern struct pbranch opt_family, opt_silent_family; 166extern struct pkw cloning, silent_family, family, ifcaps, ifflags, misc; 167 168struct pinteger parse_metric = PINTEGER_INITIALIZER(&parse_metric, "metric", 10, 169 setifmetric, "metric", &command_root.pb_parser); 170 171struct pinteger parse_mtu = PINTEGER_INITIALIZER(&parse_mtu, "mtu", 10, 172 setifmtu, "mtu", &command_root.pb_parser); 173 174struct pinteger parse_prefixlen = PINTEGER_INITIALIZER(&parse_prefixlen, 175 "prefixlen", 10, setifprefixlen, "prefixlen", &command_root.pb_parser); 176 177struct pinteger parse_preference = PINTEGER_INITIALIZER1(&parse_preference, 178 "preference", INT16_MIN, INT16_MAX, 10, NULL, "preference", 179 &command_root.pb_parser); 180 181struct paddr parse_netmask = PADDR_INITIALIZER(&parse_netmask, "netmask", 182 setifnetmask, "dstormask", NULL, NULL, NULL, &command_root.pb_parser); 183 184struct paddr parse_broadcast = PADDR_INITIALIZER(&parse_broadcast, 185 "broadcast address", 186 setifbroadaddr, "broadcast", NULL, NULL, NULL, &command_root.pb_parser); 187 188static const struct kwinst misckw[] = { 189 {.k_word = "alias", .k_key = "alias", .k_deact = "alias", 190 .k_type = KW_T_BOOL, .k_neg = true, 191 .k_bool = true, .k_negbool = false, 192 .k_nextparser = &command_root.pb_parser} 193 , {.k_word = "broadcast", .k_nextparser = &parse_broadcast.pa_parser} 194 , {.k_word = "delete", .k_key = "alias", .k_deact = "alias", 195 .k_type = KW_T_BOOL, .k_bool = false, 196 .k_nextparser = &command_root.pb_parser} 197 , {.k_word = "metric", .k_nextparser = &parse_metric.pi_parser} 198 , {.k_word = "mtu", .k_nextparser = &parse_mtu.pi_parser} 199 , {.k_word = "netmask", .k_nextparser = &parse_netmask.pa_parser} 200 , {.k_word = "preference", .k_act = "address", 201 .k_nextparser = &parse_preference.pi_parser} 202 , {.k_word = "prefixlen", .k_nextparser = &parse_prefixlen.pi_parser} 203 , {.k_word = "trailers", .k_neg = true, 204 .k_exec = notrailers, .k_nextparser = &command_root.pb_parser} 205}; 206 207/* key: clonecmd */ 208static const struct kwinst clonekw[] = { 209 {.k_word = "create", .k_type = KW_T_INT, .k_int = SIOCIFCREATE, 210 .k_nextparser = &opt_silent_family.pb_parser}, 211 {.k_word = "destroy", .k_type = KW_T_INT, .k_int = SIOCIFDESTROY} 212}; 213 214static struct kwinst familykw[24]; 215 216struct pterm cloneterm = PTERM_INITIALIZER(&cloneterm, "list cloners", 217 list_cloners, "none"); 218 219struct pterm no_cmds = PTERM_INITIALIZER(&no_cmds, "no commands", no_cmds_exec, 220 "none"); 221 222struct pkw family_only = 223 PKW_INITIALIZER(&family_only, "family-only", NULL, "af", familykw, 224 __arraycount(familykw), &no_cmds.pt_parser); 225 226struct paddr address = PADDR_INITIALIZER(&address, 227 "local address (address 1)", 228 setifaddr, "address", "netmask", NULL, "address", &command_root.pb_parser); 229 230struct paddr dstormask = PADDR_INITIALIZER(&dstormask, 231 "destination/netmask (address 2)", 232 setifdstormask, "dstormask", NULL, "address", "dstormask", 233 &command_root.pb_parser); 234 235struct paddr broadcast = PADDR_INITIALIZER(&broadcast, 236 "broadcast address (address 3)", 237 setifbroadaddr, "broadcast", NULL, "dstormask", "broadcast", 238 &command_root.pb_parser); 239 240static SIMPLEQ_HEAD(, afswtch) aflist = SIMPLEQ_HEAD_INITIALIZER(aflist); 241 242static SIMPLEQ_HEAD(, usage_func) usage_funcs = 243 SIMPLEQ_HEAD_INITIALIZER(usage_funcs); 244static SIMPLEQ_HEAD(, status_func) status_funcs = 245 SIMPLEQ_HEAD_INITIALIZER(status_funcs); 246static SIMPLEQ_HEAD(, statistics_func) statistics_funcs = 247 SIMPLEQ_HEAD_INITIALIZER(statistics_funcs); 248static SIMPLEQ_HEAD(, cmdloop_branch) cmdloop_branches = 249 SIMPLEQ_HEAD_INITIALIZER(cmdloop_branches); 250 251struct branch opt_clone_brs[] = { 252 {.b_nextparser = &cloning.pk_parser} 253 , {.b_nextparser = &opt_family.pb_parser} 254}, opt_silent_family_brs[] = { 255 {.b_nextparser = &silent_family.pk_parser} 256 , {.b_nextparser = &command_root.pb_parser} 257}, opt_family_brs[] = { 258 {.b_nextparser = &family.pk_parser} 259 , {.b_nextparser = &opt_command.pb_parser} 260}, command_root_brs[] = { 261 {.b_nextparser = &ifflags.pk_parser} 262 , {.b_nextparser = &ifcaps.pk_parser} 263 , {.b_nextparser = &kwmedia.pk_parser} 264 , {.b_nextparser = &misc.pk_parser} 265 , {.b_nextparser = &address.pa_parser} 266 , {.b_nextparser = &dstormask.pa_parser} 267 , {.b_nextparser = &broadcast.pa_parser} 268 , {.b_nextparser = NULL} 269}, opt_command_brs[] = { 270 {.b_nextparser = &no_cmds.pt_parser} 271 , {.b_nextparser = &command_root.pb_parser} 272}; 273 274struct branch opt_family_only_brs[] = { 275 {.b_nextparser = &no_cmds.pt_parser} 276 , {.b_nextparser = &family_only.pk_parser} 277}; 278struct pbranch opt_family_only = PBRANCH_INITIALIZER(&opt_family_only, 279 "opt-family-only", opt_family_only_brs, 280 __arraycount(opt_family_only_brs), true); 281struct pbranch opt_command = PBRANCH_INITIALIZER(&opt_command, 282 "optional command", 283 opt_command_brs, __arraycount(opt_command_brs), true); 284 285struct pbranch command_root = PBRANCH_INITIALIZER(&command_root, 286 "command-root", command_root_brs, __arraycount(command_root_brs), true); 287 288struct piface iface_opt_family_only = 289 PIFACE_INITIALIZER(&iface_opt_family_only, "iface-opt-family-only", 290 NULL, "if", &opt_family_only.pb_parser); 291 292struct pkw family = PKW_INITIALIZER(&family, "family", NULL, "af", 293 familykw, __arraycount(familykw), &opt_command.pb_parser); 294 295struct pkw silent_family = PKW_INITIALIZER(&silent_family, "silent family", 296 NULL, "af", familykw, __arraycount(familykw), &command_root.pb_parser); 297 298struct pkw *family_users[] = {&family_only, &family, &silent_family}; 299 300struct pkw ifcaps = PKW_INITIALIZER(&ifcaps, "ifcaps", setifcaps, 301 "ifcap", ifcapskw, __arraycount(ifcapskw), &command_root.pb_parser); 302 303struct pkw ifflags = PKW_INITIALIZER(&ifflags, "ifflags", setifflags, 304 "ifflag", ifflagskw, __arraycount(ifflagskw), &command_root.pb_parser); 305 306struct pkw cloning = PKW_INITIALIZER(&cloning, "cloning", clone_command, 307 "clonecmd", clonekw, __arraycount(clonekw), NULL); 308 309struct pkw misc = PKW_INITIALIZER(&misc, "misc", NULL, NULL, 310 misckw, __arraycount(misckw), NULL); 311 312struct pbranch opt_clone = PBRANCH_INITIALIZER(&opt_clone, 313 "opt-clone", opt_clone_brs, __arraycount(opt_clone_brs), true); 314 315struct pbranch opt_silent_family = PBRANCH_INITIALIZER(&opt_silent_family, 316 "optional silent family", opt_silent_family_brs, 317 __arraycount(opt_silent_family_brs), true); 318 319struct pbranch opt_family = PBRANCH_INITIALIZER(&opt_family, 320 "opt-family", opt_family_brs, __arraycount(opt_family_brs), true); 321 322struct piface iface_start = PIFACE_INITIALIZER(&iface_start, 323 "iface-opt-family", NULL, "if", &opt_clone.pb_parser); 324 325struct piface iface_only = PIFACE_INITIALIZER(&iface_only, "iface", 326 media_status_exec, "if", NULL); 327 328static bool 329flag_is_registered(const char *flags, int flag) 330{ 331 return flags != NULL && strchr(flags, flag) != NULL; 332} 333 334static int 335check_flag(const char *flags, int flag) 336{ 337 if (flag_is_registered(flags, flag)) { 338 errno = EEXIST; 339 return -1; 340 } 341 342 if (flag >= '0' && flag <= '9') 343 return 0; 344 if (flag >= 'a' && flag <= 'z') 345 return 0; 346 if (flag >= 'A' && flag <= 'Z') 347 return 0; 348 349 errno = EINVAL; 350 return -1; 351} 352 353void 354cmdloop_branch_init(cmdloop_branch_t *b, struct parser *p) 355{ 356 b->b_parser = p; 357} 358 359void 360statistics_func_init(statistics_func_t *f, statistics_cb_t func) 361{ 362 f->f_func = func; 363} 364 365void 366status_func_init(status_func_t *f, status_cb_t func) 367{ 368 f->f_func = func; 369} 370 371void 372usage_func_init(usage_func_t *f, usage_cb_t func) 373{ 374 f->f_func = func; 375} 376 377int 378register_cmdloop_branch(cmdloop_branch_t *b) 379{ 380 SIMPLEQ_INSERT_TAIL(&cmdloop_branches, b, b_next); 381 return 0; 382} 383 384int 385register_statistics(statistics_func_t *f) 386{ 387 SIMPLEQ_INSERT_TAIL(&statistics_funcs, f, f_next); 388 return 0; 389} 390 391int 392register_status(status_func_t *f) 393{ 394 SIMPLEQ_INSERT_TAIL(&status_funcs, f, f_next); 395 return 0; 396} 397 398int 399register_usage(usage_func_t *f) 400{ 401 SIMPLEQ_INSERT_TAIL(&usage_funcs, f, f_next); 402 return 0; 403} 404 405int 406register_family(struct afswtch *af) 407{ 408 SIMPLEQ_INSERT_TAIL(&aflist, af, af_next); 409 return 0; 410} 411 412int 413register_flag(int flag) 414{ 415 if (check_flag(gflags, flag) == -1) 416 return -1; 417 418 if (strlen(gflags) + 1 >= sizeof(gflags)) { 419 errno = ENOMEM; 420 return -1; 421 } 422 423 gflags[strlen(gflags)] = flag; 424 425 return 0; 426} 427 428static int 429flag_index(int flag) 430{ 431 if (flag >= '0' && flag <= '9') 432 return flag - '0'; 433 if (flag >= 'a' && flag <= 'z') 434 return 10 + flag - 'a'; 435 if (flag >= 'A' && flag <= 'Z') 436 return 10 + 26 + flag - 'a'; 437 438 errno = EINVAL; 439 return -1; 440} 441 442static bool 443set_flag(int flag) 444{ 445 int idx; 446 447 if ((idx = flag_index(flag)) == -1) 448 return false; 449 450 return gflagset[idx] = true; 451} 452 453bool 454get_flag(int flag) 455{ 456 int idx; 457 458 if ((idx = flag_index(flag)) == -1) 459 return false; 460 461 return gflagset[idx]; 462} 463 464static struct parser * 465init_parser(void) 466{ 467 cmdloop_branch_t *b; 468 469 if (parser_init(&iface_opt_family_only.pif_parser) == -1) 470 err(EXIT_FAILURE, "parser_init(iface_opt_family_only)"); 471 if (parser_init(&iface_only.pif_parser) == -1) 472 err(EXIT_FAILURE, "parser_init(iface_only)"); 473 if (parser_init(&iface_start.pif_parser) == -1) 474 err(EXIT_FAILURE, "parser_init(iface_start)"); 475 476 SIMPLEQ_FOREACH(b, &cmdloop_branches, b_next) 477 pbranch_addbranch(&command_root, b->b_parser); 478 479 return &iface_start.pif_parser; 480} 481 482static int 483no_cmds_exec(prop_dictionary_t env, prop_dictionary_t oenv) 484{ 485 const char *ifname; 486 unsigned short ignore; 487 488 /* ifname == NULL is ok. It indicates 'ifconfig -a'. */ 489 if ((ifname = getifname(env)) == NULL) 490 ; 491 else if (getifflags(env, oenv, &ignore) == -1) 492 err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname); 493 494 printall(ifname, env); 495 exit(EXIT_SUCCESS); 496} 497 498static int 499media_status_exec(prop_dictionary_t env, prop_dictionary_t oenv) 500{ 501 const char *ifname; 502 unsigned short ignore; 503 504 /* ifname == NULL is ok. It indicates 'ifconfig -a'. */ 505 if ((ifname = getifname(env)) == NULL) 506 ; 507 else if (getifflags(env, oenv, &ignore) == -1) 508 err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname); 509 510 exit(carrier(env)); 511} 512 513static void 514do_setifcaps(prop_dictionary_t env) 515{ 516 struct ifcapreq ifcr; 517 prop_data_t d; 518 519 d = (prop_data_t )prop_dictionary_get(env, "ifcaps"); 520 if (d == NULL) 521 return; 522 523 assert(sizeof(ifcr) == prop_data_size(d)); 524 525 memcpy(&ifcr, prop_data_data_nocopy(d), sizeof(ifcr)); 526 if (direct_ioctl(env, SIOCSIFCAP, &ifcr) == -1) 527 err(EXIT_FAILURE, "SIOCSIFCAP"); 528} 529 530int 531main(int argc, char **argv) 532{ 533 const struct afswtch *afp; 534 int af, s; 535 bool aflag = false, Cflag = false; 536 struct match match[32]; 537 size_t nmatch; 538 struct parser *start; 539 int ch, narg = 0, rc; 540 prop_dictionary_t env, oenv; 541 const char *ifname; 542 543 memset(match, 0, sizeof(match)); 544 545 init_afs(); 546 547 start = init_parser(); 548 549 /* Parse command-line options */ 550 aflag = vflag = zflag = false; 551 while ((ch = getopt(argc, argv, gflags)) != -1) { 552 switch (ch) { 553 case 'A': 554 warnx("-A is deprecated"); 555 break; 556 557 case 'a': 558 aflag = true; 559 break; 560 561 case 'b': 562 bflag = true; 563 break; 564 565 case 'C': 566 Cflag = true; 567 break; 568 569 case 'd': 570 dflag = true; 571 break; 572 case 'h': 573 hflag = true; 574 break; 575 case 'l': 576 lflag = true; 577 break; 578 579 case 's': 580 sflag = true; 581 break; 582 583 case 'u': 584 uflag = true; 585 break; 586 587 case 'v': 588 vflag = true; 589 break; 590 591 case 'z': 592 zflag = true; 593 break; 594 595 default: 596 if (!set_flag(ch)) 597 usage(); 598 break; 599 } 600 switch (ch) { 601 case 'a': 602 start = &opt_family_only.pb_parser; 603 break; 604 605 case 'L': 606 case 'm': 607 case 'v': 608 case 'z': 609 if (start != &opt_family_only.pb_parser) 610 start = &iface_opt_family_only.pif_parser; 611 break; 612 case 'C': 613 start = &cloneterm.pt_parser; 614 break; 615 case 'l': 616 start = &no_cmds.pt_parser; 617 break; 618 case 's': 619 if (start != &no_cmds.pt_parser && 620 start != &opt_family_only.pb_parser) 621 start = &iface_only.pif_parser; 622 break; 623 default: 624 break; 625 } 626 } 627 argc -= optind; 628 argv += optind; 629 630 /* 631 * -l means "list all interfaces", and is mutally exclusive with 632 * all other flags/commands. 633 * 634 * -C means "list all names of cloners", and it mutually exclusive 635 * with all other flags/commands. 636 * 637 * -a means "print status of all interfaces". 638 */ 639 if ((lflag || Cflag) && (aflag || get_flag('m') || vflag || zflag)) 640 usage(); 641 if ((lflag || Cflag) && get_flag('L')) 642 usage(); 643 if (lflag && Cflag) 644 usage(); 645 646 nmatch = __arraycount(match); 647 648 rc = parse(argc, argv, start, match, &nmatch, &narg); 649 if (rc != 0) 650 usage(); 651 652 if ((oenv = prop_dictionary_create()) == NULL) 653 err(EXIT_FAILURE, "%s: prop_dictionary_create", __func__); 654 655 if (matches_exec(match, oenv, nmatch) == -1) 656 err(EXIT_FAILURE, "exec_matches"); 657 658 argc -= narg; 659 argv += narg; 660 661 env = (nmatch > 0) ? match[(int)nmatch - 1].m_env : NULL; 662 if (env == NULL) 663 env = oenv; 664 else 665 env = prop_dictionary_augment(env, oenv); 666 667 /* Process any media commands that may have been issued. */ 668 process_media_commands(env); 669 670 if ((af = getaf(env)) == -1) 671 af = AF_INET; 672 673 if ((s = getsock(af)) == -1) 674 err(EXIT_FAILURE, "%s: getsock", __func__); 675 676 if ((ifname = getifname(env)) == NULL) 677 err(EXIT_FAILURE, "%s: getifname", __func__); 678 679 if ((afp = lookup_af_bynum(af)) == NULL) 680 errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__); 681 682 assert(afp->af_addr_commit != NULL); 683 (*afp->af_addr_commit)(env, oenv); 684 685 do_setifpreference(env); 686 do_setifcaps(env); 687 688 exit(EXIT_SUCCESS); 689} 690 691static void 692init_afs(void) 693{ 694 size_t i; 695 const struct afswtch *afp; 696 struct kwinst kw = {.k_type = KW_T_INT}; 697 698 SIMPLEQ_FOREACH(afp, &aflist, af_next) { 699 kw.k_word = afp->af_name; 700 kw.k_int = afp->af_af; 701 for (i = 0; i < __arraycount(familykw); i++) { 702 if (familykw[i].k_word == NULL) { 703 familykw[i] = kw; 704 break; 705 } 706 } 707 } 708} 709 710const struct afswtch * 711lookup_af_bynum(int afnum) 712{ 713 const struct afswtch *afp; 714 715 SIMPLEQ_FOREACH(afp, &aflist, af_next) { 716 if (afp->af_af == afnum) 717 break; 718 } 719 return afp; 720} 721 722void 723printall(const char *ifname, prop_dictionary_t env0) 724{ 725 struct ifaddrs *ifap, *ifa; 726 struct ifreq ifr; 727 const struct sockaddr_dl *sdl = NULL; 728 prop_dictionary_t env, oenv; 729 int idx; 730 char *p; 731 732 if (env0 == NULL) 733 env = prop_dictionary_create(); 734 else 735 env = prop_dictionary_copy_mutable(env0); 736 737 oenv = prop_dictionary_create(); 738 739 if (env == NULL || oenv == NULL) 740 errx(EXIT_FAILURE, "%s: prop_dictionary_copy/create", __func__); 741 742 if (getifaddrs(&ifap) != 0) 743 err(EXIT_FAILURE, "getifaddrs"); 744 p = NULL; 745 idx = 0; 746 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 747 memset(&ifr, 0, sizeof(ifr)); 748 estrlcpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name)); 749 if (sizeof(ifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 750 memcpy(&ifr.ifr_addr, ifa->ifa_addr, 751 ifa->ifa_addr->sa_len); 752 } 753 754 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0) 755 continue; 756 if (ifa->ifa_addr->sa_family == AF_LINK) 757 sdl = (const struct sockaddr_dl *) ifa->ifa_addr; 758 if (p && strcmp(p, ifa->ifa_name) == 0) 759 continue; 760 if (!prop_dictionary_set_cstring(env, "if", ifa->ifa_name)) 761 continue; 762 p = ifa->ifa_name; 763 764 if (bflag && (ifa->ifa_flags & IFF_BROADCAST) == 0) 765 continue; 766 if (dflag && (ifa->ifa_flags & IFF_UP) != 0) 767 continue; 768 if (uflag && (ifa->ifa_flags & IFF_UP) == 0) 769 continue; 770 771 if (sflag && carrier(env)) 772 continue; 773 idx++; 774 /* 775 * Are we just listing the interfaces? 776 */ 777 if (lflag) { 778 if (idx > 1) 779 printf(" "); 780 fputs(ifa->ifa_name, stdout); 781 continue; 782 } 783 784 status(sdl, env, oenv); 785 sdl = NULL; 786 } 787 if (lflag) 788 printf("\n"); 789 prop_object_release((prop_object_t)env); 790 prop_object_release((prop_object_t)oenv); 791 freeifaddrs(ifap); 792} 793 794static int 795list_cloners(prop_dictionary_t env, prop_dictionary_t oenv) 796{ 797 struct if_clonereq ifcr; 798 char *cp, *buf; 799 int idx, s; 800 801 memset(&ifcr, 0, sizeof(ifcr)); 802 803 s = getsock(AF_INET); 804 805 if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1) 806 err(EXIT_FAILURE, "SIOCIFGCLONERS for count"); 807 808 buf = malloc(ifcr.ifcr_total * IFNAMSIZ); 809 if (buf == NULL) 810 err(EXIT_FAILURE, "unable to allocate cloner name buffer"); 811 812 ifcr.ifcr_count = ifcr.ifcr_total; 813 ifcr.ifcr_buffer = buf; 814 815 if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1) 816 err(EXIT_FAILURE, "SIOCIFGCLONERS for names"); 817 818 /* 819 * In case some disappeared in the mean time, clamp it down. 820 */ 821 if (ifcr.ifcr_count > ifcr.ifcr_total) 822 ifcr.ifcr_count = ifcr.ifcr_total; 823 824 for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) { 825 if (idx > 0) 826 printf(" "); 827 printf("%s", cp); 828 } 829 830 printf("\n"); 831 free(buf); 832 exit(EXIT_SUCCESS); 833} 834 835static int 836clone_command(prop_dictionary_t env, prop_dictionary_t oenv) 837{ 838 int64_t cmd; 839 840 if (!prop_dictionary_get_int64(env, "clonecmd", &cmd)) { 841 errno = ENOENT; 842 return -1; 843 } 844 845 if (indirect_ioctl(env, (unsigned long)cmd, NULL) == -1) { 846 warn("%s", __func__); 847 return -1; 848 } 849 return 0; 850} 851 852/*ARGSUSED*/ 853static int 854setifaddr(prop_dictionary_t env, prop_dictionary_t oenv) 855{ 856 const struct paddr_prefix *pfx0; 857 struct paddr_prefix *pfx; 858 prop_data_t d; 859 int af; 860 861 if ((af = getaf(env)) == -1) 862 af = AF_INET; 863 864 d = (prop_data_t)prop_dictionary_get(env, "address"); 865 assert(d != NULL); 866 pfx0 = prop_data_data_nocopy(d); 867 868 if (pfx0->pfx_len >= 0) { 869 pfx = prefixlen_to_mask(af, pfx0->pfx_len); 870 if (pfx == NULL) 871 err(EXIT_FAILURE, "prefixlen_to_mask"); 872 free(pfx); 873 } 874 875 return 0; 876} 877 878static int 879setifnetmask(prop_dictionary_t env, prop_dictionary_t oenv) 880{ 881 const struct paddr_prefix *pfx; 882 prop_data_t d; 883 884 d = (prop_data_t)prop_dictionary_get(env, "dstormask"); 885 assert(d != NULL); 886 pfx = prop_data_data_nocopy(d); 887 888 if (!prop_dictionary_set(oenv, "netmask", (prop_object_t)d)) 889 return -1; 890 891 return 0; 892} 893 894static int 895setifbroadaddr(prop_dictionary_t env, prop_dictionary_t oenv) 896{ 897 const struct paddr_prefix *pfx; 898 prop_data_t d; 899 unsigned short flags; 900 901 if (getifflags(env, oenv, &flags) == -1) 902 err(EXIT_FAILURE, "%s: getifflags", __func__); 903 904 if ((flags & IFF_BROADCAST) == 0) 905 errx(EXIT_FAILURE, "not a broadcast interface"); 906 907 d = (prop_data_t)prop_dictionary_get(env, "broadcast"); 908 assert(d != NULL); 909 pfx = prop_data_data_nocopy(d); 910 911 if (!prop_dictionary_set(oenv, "broadcast", (prop_object_t)d)) 912 return -1; 913 914 return 0; 915} 916 917/*ARGSUSED*/ 918static int 919notrailers(prop_dictionary_t env, prop_dictionary_t oenv) 920{ 921 puts("Note: trailers are no longer sent, but always received"); 922 return 0; 923} 924 925/*ARGSUSED*/ 926static int 927setifdstormask(prop_dictionary_t env, prop_dictionary_t oenv) 928{ 929 const char *key; 930 const struct paddr_prefix *pfx; 931 prop_data_t d; 932 unsigned short flags; 933 934 if (getifflags(env, oenv, &flags) == -1) 935 err(EXIT_FAILURE, "%s: getifflags", __func__); 936 937 d = (prop_data_t)prop_dictionary_get(env, "dstormask"); 938 assert(d != NULL); 939 pfx = prop_data_data_nocopy(d); 940 941 if ((flags & IFF_BROADCAST) == 0) { 942 key = "dst"; 943 } else { 944 key = "netmask"; 945 } 946 947 if (!prop_dictionary_set(oenv, key, (prop_object_t)d)) 948 return -1; 949 950 return 0; 951} 952 953static int 954setifflags(prop_dictionary_t env, prop_dictionary_t oenv) 955{ 956 struct ifreq ifr; 957 int64_t ifflag; 958 bool rc; 959 960 rc = prop_dictionary_get_int64(env, "ifflag", &ifflag); 961 assert(rc); 962 963 if (direct_ioctl(env, SIOCGIFFLAGS, &ifr) == -1) 964 return -1; 965 966 if (ifflag < 0) { 967 ifflag = -ifflag; 968 ifr.ifr_flags &= ~ifflag; 969 } else 970 ifr.ifr_flags |= ifflag; 971 972 if (direct_ioctl(env, SIOCSIFFLAGS, &ifr) == -1) 973 return -1; 974 975 return 0; 976} 977 978static int 979getifcaps(prop_dictionary_t env, prop_dictionary_t oenv, struct ifcapreq *oifcr) 980{ 981 bool rc; 982 struct ifcapreq ifcr; 983 const struct ifcapreq *tmpifcr; 984 prop_data_t capdata; 985 986 capdata = (prop_data_t)prop_dictionary_get(env, "ifcaps"); 987 988 if (capdata != NULL) { 989 tmpifcr = prop_data_data_nocopy(capdata); 990 *oifcr = *tmpifcr; 991 return 0; 992 } 993 994 (void)direct_ioctl(env, SIOCGIFCAP, &ifcr); 995 *oifcr = ifcr; 996 997 capdata = prop_data_create_data(&ifcr, sizeof(ifcr)); 998 999 rc = prop_dictionary_set(oenv, "ifcaps", capdata); 1000 1001 prop_object_release((prop_object_t)capdata); 1002 1003 return rc ? 0 : -1; 1004} 1005 1006static int 1007setifcaps(prop_dictionary_t env, prop_dictionary_t oenv) 1008{ 1009 int64_t ifcap; 1010 int s; 1011 bool rc; 1012 prop_data_t capdata; 1013 struct ifcapreq ifcr; 1014 1015 s = getsock(AF_INET); 1016 1017 rc = prop_dictionary_get_int64(env, "ifcap", &ifcap); 1018 assert(rc); 1019 1020 if (getifcaps(env, oenv, &ifcr) == -1) 1021 return -1; 1022 1023 if (ifcap < 0) { 1024 ifcap = -ifcap; 1025 ifcr.ifcr_capenable &= ~ifcap; 1026 } else 1027 ifcr.ifcr_capenable |= ifcap; 1028 1029 if ((capdata = prop_data_create_data(&ifcr, sizeof(ifcr))) == NULL) 1030 return -1; 1031 1032 rc = prop_dictionary_set(oenv, "ifcaps", capdata); 1033 prop_object_release((prop_object_t)capdata); 1034 1035 return rc ? 0 : -1; 1036} 1037 1038static int 1039setifmetric(prop_dictionary_t env, prop_dictionary_t oenv) 1040{ 1041 struct ifreq ifr; 1042 bool rc; 1043 int64_t metric; 1044 1045 rc = prop_dictionary_get_int64(env, "metric", &metric); 1046 assert(rc); 1047 1048 ifr.ifr_metric = metric; 1049 if (direct_ioctl(env, SIOCSIFMETRIC, &ifr) == -1) 1050 warn("SIOCSIFMETRIC"); 1051 return 0; 1052} 1053 1054static void 1055do_setifpreference(prop_dictionary_t env) 1056{ 1057 struct if_addrprefreq ifap; 1058 prop_data_t d; 1059 const struct paddr_prefix *pfx; 1060 1061 memset(&ifap, 0, sizeof(ifap)); 1062 1063 if (!prop_dictionary_get_int16(env, "preference", 1064 &ifap.ifap_preference)) 1065 return; 1066 1067 d = (prop_data_t)prop_dictionary_get(env, "address"); 1068 assert(d != NULL); 1069 1070 pfx = prop_data_data_nocopy(d); 1071 1072 memcpy(&ifap.ifap_addr, &pfx->pfx_addr, 1073 MIN(sizeof(ifap.ifap_addr), pfx->pfx_addr.sa_len)); 1074 if (direct_ioctl(env, SIOCSIFADDRPREF, &ifap) == -1) 1075 warn("SIOCSIFADDRPREF"); 1076} 1077 1078static int 1079setifmtu(prop_dictionary_t env, prop_dictionary_t oenv) 1080{ 1081 int64_t mtu; 1082 bool rc; 1083 struct ifreq ifr; 1084 1085 rc = prop_dictionary_get_int64(env, "mtu", &mtu); 1086 assert(rc); 1087 1088 ifr.ifr_mtu = mtu; 1089 if (direct_ioctl(env, SIOCSIFMTU, &ifr) == -1) 1090 warn("SIOCSIFMTU"); 1091 1092 return 0; 1093} 1094 1095static int 1096carrier(prop_dictionary_t env) 1097{ 1098 struct ifmediareq ifmr; 1099 1100 memset(&ifmr, 0, sizeof(ifmr)); 1101 1102 if (direct_ioctl(env, SIOCGIFMEDIA, &ifmr) == -1) { 1103 /* 1104 * Interface doesn't support SIOC{G,S}IFMEDIA; 1105 * assume ok. 1106 */ 1107 return EXIT_SUCCESS; 1108 } 1109 if ((ifmr.ifm_status & IFM_AVALID) == 0) { 1110 /* 1111 * Interface doesn't report media-valid status. 1112 * assume ok. 1113 */ 1114 return EXIT_SUCCESS; 1115 } 1116 /* otherwise, return ok for active, not-ok if not active. */ 1117 if (ifmr.ifm_status & IFM_ACTIVE) 1118 return EXIT_SUCCESS; 1119 else 1120 return EXIT_FAILURE; 1121} 1122 1123static void 1124print_plural(const char *prefix, uint64_t n, const char *unit) 1125{ 1126 printf("%s%" PRIu64 " %s%s", prefix, n, unit, (n == 1) ? "" : "s"); 1127} 1128 1129static void 1130print_human_bytes(bool humanize, uint64_t n) 1131{ 1132 char buf[5]; 1133 1134 if (humanize) { 1135 (void)humanize_number(buf, sizeof(buf), 1136 (int64_t)n, "", HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 1137 printf(", %s byte%s", buf, (atof(buf) == 1.0) ? "" : "s"); 1138 } else 1139 print_plural(", ", n, "byte"); 1140} 1141 1142/* 1143 * Print the status of the interface. If an address family was 1144 * specified, show it and it only; otherwise, show them all. 1145 */ 1146void 1147status(const struct sockaddr_dl *sdl, prop_dictionary_t env, 1148 prop_dictionary_t oenv) 1149{ 1150 const struct if_data *ifi; 1151 status_func_t *status_f; 1152 statistics_func_t *statistics_f; 1153 struct ifdatareq ifdr; 1154 struct ifreq ifr; 1155 char hbuf[NI_MAXHOST]; 1156 char fbuf[BUFSIZ]; 1157 int af, s; 1158 const char *ifname; 1159 struct ifcapreq ifcr; 1160 unsigned short flags; 1161 const struct afswtch *afp; 1162 1163 if ((af = getaf(env)) == -1) { 1164 afp = NULL; 1165 af = AF_UNSPEC; 1166 } else 1167 afp = lookup_af_bynum(af); 1168 1169 /* get out early if the family is unsupported by the kernel */ 1170 if ((s = getsock(af)) == -1) 1171 err(EXIT_FAILURE, "%s: getsock", __func__); 1172 1173 if ((ifname = getifinfo(env, oenv, &flags)) == NULL) 1174 err(EXIT_FAILURE, "%s: getifinfo", __func__); 1175 1176 (void)snprintb(fbuf, sizeof(fbuf), IFFBITS, flags); 1177 printf("%s: flags=%s", ifname, &fbuf[2]); 1178 1179 estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); 1180 if (ioctl(s, SIOCGIFMETRIC, &ifr) == -1) 1181 warn("SIOCGIFMETRIC %s", ifr.ifr_name); 1182 else if (ifr.ifr_metric != 0) 1183 printf(" metric %d", ifr.ifr_metric); 1184 1185 estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); 1186 if (ioctl(s, SIOCGIFMTU, &ifr) != -1 && ifr.ifr_mtu != 0) 1187 printf(" mtu %d", ifr.ifr_mtu); 1188 printf("\n"); 1189 1190 if (getifcaps(env, oenv, &ifcr) == -1) 1191 err(EXIT_FAILURE, "%s: getifcaps", __func__); 1192 1193 if (ifcr.ifcr_capabilities != 0) { 1194 (void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS, 1195 ifcr.ifcr_capabilities); 1196 printf("\tcapabilities=%s\n", &fbuf[2]); 1197 (void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS, 1198 ifcr.ifcr_capenable); 1199 printf("\tenabled=%s\n", &fbuf[2]); 1200 } 1201 1202 SIMPLEQ_FOREACH(status_f, &status_funcs, f_next) 1203 (*status_f->f_func)(env, oenv); 1204 1205 if (sdl != NULL && 1206 getnameinfo((const struct sockaddr *)sdl, sdl->sdl_len, 1207 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) == 0 && 1208 hbuf[0] != '\0') 1209 printf("\taddress: %s\n", hbuf); 1210 1211 media_status(env, oenv); 1212 1213 if (!vflag && !zflag) 1214 goto proto_status; 1215 1216 estrlcpy(ifdr.ifdr_name, ifname, sizeof(ifdr.ifdr_name)); 1217 1218 if (ioctl(s, zflag ? SIOCZIFDATA:SIOCGIFDATA, &ifdr) == -1) 1219 err(EXIT_FAILURE, zflag ? "SIOCZIFDATA" : "SIOCGIFDATA"); 1220 1221 ifi = &ifdr.ifdr_data; 1222 1223 print_plural("\tinput: ", ifi->ifi_ipackets, "packet"); 1224 print_human_bytes(hflag, ifi->ifi_ibytes); 1225 if (ifi->ifi_imcasts) 1226 print_plural(", ", ifi->ifi_imcasts, "multicast"); 1227 if (ifi->ifi_ierrors) 1228 print_plural(", ", ifi->ifi_ierrors, "error"); 1229 if (ifi->ifi_iqdrops) 1230 print_plural(", ", ifi->ifi_iqdrops, "queue drop"); 1231 if (ifi->ifi_noproto) 1232 printf(", %" PRIu64 " unknown protocol", ifi->ifi_noproto); 1233 print_plural("\n\toutput: ", ifi->ifi_opackets, "packet"); 1234 print_human_bytes(hflag, ifi->ifi_obytes); 1235 if (ifi->ifi_omcasts) 1236 print_plural(", ", ifi->ifi_omcasts, "multicast"); 1237 if (ifi->ifi_oerrors) 1238 print_plural(", ", ifi->ifi_oerrors, "error"); 1239 if (ifi->ifi_collisions) 1240 print_plural(", ", ifi->ifi_collisions, "collision"); 1241 printf("\n"); 1242 1243 SIMPLEQ_FOREACH(statistics_f, &statistics_funcs, f_next) 1244 (*statistics_f->f_func)(env); 1245 1246 proto_status: 1247 1248 if (afp != NULL) 1249 (*afp->af_status)(env, oenv, true); 1250 else SIMPLEQ_FOREACH(afp, &aflist, af_next) 1251 (*afp->af_status)(env, oenv, false); 1252} 1253 1254static int 1255setifprefixlen(prop_dictionary_t env, prop_dictionary_t oenv) 1256{ 1257 bool rc; 1258 int64_t plen; 1259 int af; 1260 struct paddr_prefix *pfx; 1261 prop_data_t d; 1262 1263 if ((af = getaf(env)) == -1) 1264 af = AF_INET; 1265 1266 rc = prop_dictionary_get_int64(env, "prefixlen", &plen); 1267 assert(rc); 1268 1269 pfx = prefixlen_to_mask(af, plen); 1270 if (pfx == NULL) 1271 err(EXIT_FAILURE, "prefixlen_to_mask"); 1272 1273 d = prop_data_create_data(pfx, paddr_prefix_size(pfx)); 1274 if (d == NULL) 1275 err(EXIT_FAILURE, "%s: prop_data_create_data", __func__); 1276 1277 if (!prop_dictionary_set(oenv, "netmask", (prop_object_t)d)) 1278 err(EXIT_FAILURE, "%s: prop_dictionary_set", __func__); 1279 1280 free(pfx); 1281 return 0; 1282} 1283 1284static void 1285usage(void) 1286{ 1287 const char *progname = getprogname(); 1288 usage_func_t *usage_f; 1289 prop_dictionary_t env; 1290 1291 if ((env = prop_dictionary_create()) == NULL) 1292 err(EXIT_FAILURE, "%s: prop_dictionary_create", __func__); 1293 1294 fprintf(stderr, "usage: %s [-h] %s[-v] [-z] %sinterface\n" 1295 "\t[ af [ address [ dest_addr ] ] [ netmask mask ] [ prefixlen n ]\n" 1296 "\t\t[ alias | -alias ] ]\n" 1297 "\t[ up ] [ down ] [ metric n ] [ mtu n ]\n", progname, 1298 flag_is_registered(gflags, 'm') ? "[-m] " : "", 1299 flag_is_registered(gflags, 'L') ? "[-L] " : ""); 1300 1301 SIMPLEQ_FOREACH(usage_f, &usage_funcs, f_next) 1302 (*usage_f->f_func)(env); 1303 1304 fprintf(stderr, 1305 "\t[ arp | -arp ]\n" 1306 "\t[ preference n ]\n" 1307 "\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n" 1308 " %s -a [-b] [-d] [-h] %s[-u] [-v] [-z] [ af ]\n" 1309 " %s -l [-b] [-d] [-s] [-u]\n" 1310 " %s -C\n" 1311 " %s interface create\n" 1312 " %s interface destroy\n", 1313 progname, flag_is_registered(gflags, 'm') ? "[-m] " : "", 1314 progname, progname, progname, progname); 1315 1316 prop_object_release((prop_object_t)env); 1317 exit(EXIT_FAILURE); 1318} 1319