main.c revision 1.33
1 /* $NetBSD: main.c,v 1.33 2001/05/28 04:22:56 assar Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1983, 1988, 1993\n\ 39 Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.33 2001/05/28 04:22:56 assar Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/file.h> 52 #include <sys/protosw.h> 53 #include <sys/socket.h> 54 55 #include <netinet/in.h> 56 57 #include <ctype.h> 58 #include <err.h> 59 #include <errno.h> 60 #include <kvm.h> 61 #include <limits.h> 62 #include <netdb.h> 63 #include <nlist.h> 64 #include <paths.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <unistd.h> 69 #include "netstat.h" 70 71 struct nlist nl[] = { 72 #define N_MBSTAT 0 73 { "_mbstat" }, 74 #define N_IPSTAT 1 75 { "_ipstat" }, 76 #define N_TCBTABLE 2 77 { "_tcbtable" }, 78 #define N_TCPSTAT 3 79 { "_tcpstat" }, 80 #define N_UDBTABLE 4 81 { "_udbtable" }, 82 #define N_UDPSTAT 5 83 { "_udpstat" }, 84 #define N_IFNET 6 85 { "_ifnet" }, 86 #define N_IMP 7 87 { "_imp_softc" }, 88 #define N_ICMPSTAT 8 89 { "_icmpstat" }, 90 #define N_RTSTAT 9 91 { "_rtstat" }, 92 #define N_UNIXSW 10 93 { "_unixsw" }, 94 #define N_IDP 11 95 { "_nspcb"}, 96 #define N_IDPSTAT 12 97 { "_idpstat"}, 98 #define N_SPPSTAT 13 99 { "_spp_istat"}, 100 #define N_NSERR 14 101 { "_ns_errstat"}, 102 #define N_CLNPSTAT 15 103 { "_clnp_stat"}, 104 #define IN_NOTUSED 16 105 { "_tp_inpcb" }, 106 #define ISO_TP 17 107 { "_tp_refinfo" }, 108 #define N_TPSTAT 18 109 { "_tp_stat" }, 110 #define N_ESISSTAT 19 111 { "_esis_stat"}, 112 #define N_NIMP 20 113 { "_nimp"}, 114 #define N_RTREE 21 115 { "_rt_tables"}, 116 #define N_CLTP 22 117 { "_cltb"}, 118 #define N_CLTPSTAT 23 119 { "_cltpstat"}, 120 #define N_NFILE 24 121 { "_nfile" }, 122 #define N_FILE 25 123 { "_file" }, 124 #define N_IGMPSTAT 26 125 { "_igmpstat" }, 126 #define N_MRTPROTO 27 127 { "_ip_mrtproto" }, 128 #define N_MRTSTAT 28 129 { "_mrtstat" }, 130 #define N_MFCHASHTBL 29 131 { "_mfchashtbl" }, 132 #define N_MFCHASH 30 133 { "_mfchash" }, 134 #define N_VIFTABLE 31 135 { "_viftable" }, 136 #define N_MSIZE 32 137 { "_msize" }, 138 #define N_MCLBYTES 33 139 { "_mclbytes" }, 140 #define N_DDPSTAT 34 141 { "_ddpstat"}, 142 #define N_DDPCB 35 143 { "_ddpcb"}, 144 #define N_MBPOOL 36 145 { "_mbpool" }, 146 #define N_MCLPOOL 37 147 { "_mclpool" }, 148 #define N_DIVPCB 38 149 { "_divcb"}, 150 #define N_DIVSTAT 39 151 { "_divstat"}, 152 #define N_IP6STAT 40 153 { "_ip6stat" }, 154 #define N_TCB6 41 155 { "_tcb6" }, 156 #define N_TCP6STAT 42 157 { "_tcp6stat" }, 158 #define N_UDB6 43 159 { "_udb6" }, 160 #define N_UDP6STAT 44 161 { "_udp6stat" }, 162 #define N_ICMP6STAT 45 163 { "_icmp6stat" }, 164 #define N_IPSECSTAT 46 165 { "_ipsecstat" }, 166 #define N_IPSEC6STAT 47 167 { "_ipsec6stat" }, 168 #define N_PIM6STAT 48 169 { "_pim6stat" }, 170 #define N_MRT6PROTO 49 171 { "_ip6_mrtproto" }, 172 #define N_MRT6STAT 50 173 { "_mrt6stat" }, 174 #define N_MF6CTABLE 51 175 { "_mf6ctable" }, 176 #define N_MIF6TABLE 52 177 { "_mif6table" }, 178 #define N_PFKEYSTAT 53 179 { "_pfkeystat" }, 180 #define N_ARPSTAT 54 181 { "_arpstat" }, 182 { "" }, 183 }; 184 185 struct protox { 186 u_char pr_index; /* index into nlist of cb head */ 187 u_char pr_sindex; /* index into nlist of stat block */ 188 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 189 void (*pr_cblocks) /* control blocks printing routine */ 190 __P((u_long, char *)); 191 void (*pr_stats) /* statistics printing routine */ 192 __P((u_long, char *)); 193 void (*pr_istats) 194 __P((char *)); /* per/if statistics printing routine */ 195 void (*pr_dump) /* PCB state dump routine */ 196 __P((u_long)); 197 char *pr_name; /* well-known name */ 198 } protox[] = { 199 { N_TCBTABLE, N_TCPSTAT, 1, protopr, 200 tcp_stats, NULL, tcp_dump, "tcp" }, 201 { N_UDBTABLE, N_UDPSTAT, 1, protopr, 202 udp_stats, NULL, 0, "udp" }, 203 { -1, N_IPSTAT, 1, 0, 204 ip_stats, NULL, 0, "ip" }, 205 { -1, N_ICMPSTAT, 1, 0, 206 icmp_stats, NULL, 0, "icmp" }, 207 { -1, N_IGMPSTAT, 1, 0, 208 igmp_stats, NULL, 0, "igmp" }, 209 #ifdef IPSEC 210 { -1, N_IPSECSTAT, 1, 0, 211 ipsec_stats, NULL, 0, "ipsec" }, 212 #endif 213 { -1, -1, 0, 0, 214 0, NULL, 0, 0 } 215 }; 216 217 #ifdef INET6 218 struct protox ip6protox[] = { 219 { -1, N_IP6STAT, 1, 0, 220 ip6_stats, ip6_ifstats, 0, "ip6" }, 221 { -1, N_ICMP6STAT, 1, 0, 222 icmp6_stats, icmp6_ifstats, 0, "icmp6" }, 223 #ifdef TCP6 224 { N_TCB6, N_TCP6STAT, 1, ip6protopr, 225 tcp6_stats, NULL, tcp6_dump, "tcp6" }, 226 #else 227 { N_TCB6, N_TCP6STAT, 1, ip6protopr, 228 tcp_stats, NULL, tcp_dump, "tcp6" }, 229 #endif 230 { N_UDB6, N_UDP6STAT, 1, ip6protopr, 231 udp6_stats, NULL, 0, "udp6" }, 232 #ifdef IPSEC 233 { -1, N_IPSEC6STAT, 1, 0, 234 ipsec_stats, NULL, 0, "ipsec6" }, 235 #endif 236 { -1, N_PIM6STAT, 1, 0, 237 pim6_stats, NULL, 0, "pim6" }, 238 { -1, -1, 0, 0, 239 0, NULL, 0, 0 } 240 }; 241 #endif 242 243 struct protox arpprotox[] = { 244 { -1, N_ARPSTAT, 1, 0, 245 arp_stats, NULL, 0, "arp" }, 246 { -1, -1, 0, 0, 247 0, NULL, 0, 0 } 248 }; 249 250 #ifdef IPSEC 251 struct protox pfkeyprotox[] = { 252 { -1, N_PFKEYSTAT, 1, 0, 253 pfkey_stats, NULL, 0, "pfkey" }, 254 { -1, -1, 0, 0, 255 0, NULL, 0, 0 } 256 }; 257 #endif 258 259 #ifndef SMALL 260 struct protox atalkprotox[] = { 261 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 262 ddp_stats, NULL, 0, "ddp" }, 263 { -1, -1, 0, 0, 264 0, NULL, 0 } 265 }; 266 267 struct protox nsprotox[] = { 268 { N_IDP, N_IDPSTAT, 1, nsprotopr, 269 idp_stats, NULL, 0, "idp" }, 270 { N_IDP, N_SPPSTAT, 1, nsprotopr, 271 spp_stats, NULL, 0, "spp" }, 272 { -1, N_NSERR, 1, 0, 273 nserr_stats, NULL, 0, "ns_err" }, 274 { -1, -1, 0, 0, 275 0, NULL, 0 } 276 }; 277 278 struct protox isoprotox[] = { 279 { ISO_TP, N_TPSTAT, 1, iso_protopr, 280 tp_stats, NULL, 0, "tp" }, 281 { N_CLTP, N_CLTPSTAT, 1, iso_protopr, 282 cltp_stats, NULL, 0, "cltp" }, 283 { -1, N_CLNPSTAT, 1, 0, 284 clnp_stats, NULL, 0, "clnp"}, 285 { -1, N_ESISSTAT, 1, 0, 286 esis_stats, NULL, 0, "esis"}, 287 { -1, -1, 0, 0, 288 0, NULL, 0, 0 } 289 }; 290 #endif 291 292 struct protox *protoprotox[] = { protox, 293 #ifdef INET6 294 ip6protox, 295 #endif 296 arpprotox, 297 #ifdef IPSEC 298 pfkeyprotox, 299 #endif 300 #ifndef SMALL 301 atalkprotox, nsprotox, isoprotox, 302 #endif 303 NULL }; 304 305 int main __P((int, char *[])); 306 static void printproto __P((struct protox *, char *)); 307 static void usage __P((void)); 308 static struct protox *name2protox __P((char *)); 309 static struct protox *knownname __P((char *)); 310 311 kvm_t *kvmd; 312 313 int 314 main(argc, argv) 315 int argc; 316 char *argv[]; 317 { 318 struct protoent *p; 319 struct protox *tp; /* for printing cblocks & stats */ 320 int ch; 321 char *nlistf = NULL, *memf = NULL; 322 char buf[_POSIX2_LINE_MAX], *cp; 323 u_long pcbaddr; 324 gid_t egid = getegid(); 325 326 (void)setegid(getgid()); 327 tp = NULL; 328 af = AF_UNSPEC; 329 pcbaddr = 0; 330 331 while ((ch = getopt(argc, argv, "Aabdf:ghI:LliM:mN:nP:p:rsStuvw:")) != -1) 332 switch(ch) { 333 case 'A': 334 Aflag = 1; 335 break; 336 case 'a': 337 aflag = 1; 338 break; 339 case 'b': 340 bflag = 1; 341 break; 342 case 'd': 343 dflag = 1; 344 break; 345 case 'f': 346 if (strcmp(optarg, "ns") == 0) 347 af = AF_NS; 348 else if (strcmp(optarg, "inet") == 0) 349 af = AF_INET; 350 else if (strcmp(optarg, "inet6") == 0) 351 af = AF_INET6; 352 else if (strcmp(optarg, "arp") == 0) 353 af = AF_ARP; 354 else if (strcmp(optarg, "pfkey") == 0) 355 af = PF_KEY; 356 else if (strcmp(optarg, "unix") == 0 357 || strcmp(optarg, "local") == 0) 358 af = AF_LOCAL; 359 else if (strcmp(optarg, "iso") == 0) 360 af = AF_ISO; 361 else if (strcmp(optarg, "atalk") == 0) 362 af = AF_APPLETALK; 363 else 364 errx(1, "%s: unknown address family", 365 optarg); 366 break; 367 #ifndef SMALL 368 case 'g': 369 gflag = 1; 370 break; 371 #endif 372 case 'I': 373 iflag = 1; 374 interface = optarg; 375 break; 376 case 'i': 377 iflag = 1; 378 break; 379 case 'L': 380 Lflag = 1; 381 break; 382 case 'l': 383 lflag = 1; 384 break; 385 case 'M': 386 memf = optarg; 387 break; 388 case 'm': 389 mflag = 1; 390 break; 391 case 'N': 392 nlistf = optarg; 393 break; 394 case 'n': 395 numeric_addr = numeric_port = 1; 396 break; 397 case 'P': 398 pcbaddr = strtoul(optarg, &cp, 16); 399 if (*cp != '\0' || errno == ERANGE) 400 errx(1, "invalid PCB address %s", 401 optarg); 402 Pflag = 1; 403 break; 404 case 'p': 405 if ((tp = name2protox(optarg)) == NULL) 406 errx(1, "%s: unknown or uninstrumented protocol", 407 optarg); 408 pflag = 1; 409 break; 410 case 'r': 411 rflag = 1; 412 break; 413 case 's': 414 ++sflag; 415 break; 416 case 'S': 417 numeric_addr = 1; 418 break; 419 case 't': 420 tflag = 1; 421 break; 422 case 'u': 423 af = AF_LOCAL; 424 break; 425 case 'v': 426 vflag = 1; 427 break; 428 case 'w': 429 interval = atoi(optarg); 430 iflag = 1; 431 break; 432 case '?': 433 default: 434 usage(); 435 } 436 argv += optind; 437 argc -= optind; 438 439 #define BACKWARD_COMPATIBILITY 440 #ifdef BACKWARD_COMPATIBILITY 441 if (*argv) { 442 if (isdigit(**argv)) { 443 interval = atoi(*argv); 444 if (interval <= 0) 445 usage(); 446 ++argv; 447 iflag = 1; 448 } 449 if (*argv) { 450 nlistf = *argv; 451 if (*++argv) 452 memf = *argv; 453 } 454 } 455 #endif 456 457 /* 458 * Discard setgid privileges. If not the running kernel, we toss 459 * them away totally so that bad guys can't print interesting stuff 460 * from kernel memory, otherwise switch back to kmem for the 461 * duration of the kvm_openfiles() call. 462 */ 463 if (nlistf != NULL || memf != NULL || Pflag) 464 (void)setgid(getgid()); 465 else 466 (void)setegid(egid); 467 468 if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 469 buf)) == NULL) 470 errx(1, "%s", buf); 471 472 /* do this now anyway */ 473 if (nlistf == NULL && memf == NULL) 474 (void)setgid(getgid()); 475 476 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 477 if (nlistf) 478 errx(1, "%s: no namelist", nlistf); 479 else 480 errx(1, "no namelist"); 481 } 482 if (mflag) { 483 mbpr(nl[N_MBSTAT].n_value, nl[N_MSIZE].n_value, 484 nl[N_MCLBYTES].n_value, nl[N_MBPOOL].n_value, 485 nl[N_MCLPOOL].n_value); 486 exit(0); 487 } 488 if (Pflag) { 489 if (tp == NULL) { 490 /* Default to TCP. */ 491 tp = name2protox("tcp"); 492 } 493 if (tp->pr_dump) 494 (*tp->pr_dump)(pcbaddr); 495 else 496 printf("%s: no PCB dump routine\n", tp->pr_name); 497 exit(0); 498 } 499 if (pflag) { 500 if (iflag && tp->pr_istats) 501 intpr(interval, nl[N_IFNET].n_value, tp->pr_istats); 502 else if (tp->pr_stats) 503 (*tp->pr_stats)(nl[tp->pr_sindex].n_value, 504 tp->pr_name); 505 else 506 printf("%s: no stats routine\n", tp->pr_name); 507 exit(0); 508 } 509 /* 510 * Keep file descriptors open to avoid overhead 511 * of open/close on each call to get* routines. 512 */ 513 sethostent(1); 514 setnetent(1); 515 if (iflag) { 516 if (af != AF_UNSPEC) 517 goto protostat; 518 519 intpr(interval, nl[N_IFNET].n_value, NULL); 520 exit(0); 521 } 522 if (rflag) { 523 if (sflag) 524 rt_stats(nl[N_RTSTAT].n_value); 525 else 526 routepr(nl[N_RTREE].n_value); 527 exit(0); 528 } 529 #ifndef SMALL 530 if (gflag) { 531 if (sflag) { 532 if (af == AF_INET || af == AF_UNSPEC) 533 mrt_stats(nl[N_MRTPROTO].n_value, 534 nl[N_MRTSTAT].n_value); 535 #ifdef INET6 536 if (af == AF_INET6 || af == AF_UNSPEC) 537 mrt6_stats(nl[N_MRT6PROTO].n_value, 538 nl[N_MRT6STAT].n_value); 539 #endif 540 } 541 else { 542 if (af == AF_INET || af == AF_UNSPEC) 543 mroutepr(nl[N_MRTPROTO].n_value, 544 nl[N_MFCHASHTBL].n_value, 545 nl[N_MFCHASH].n_value, 546 nl[N_VIFTABLE].n_value); 547 #ifdef INET6 548 if (af == AF_INET6 || af == AF_UNSPEC) 549 mroute6pr(nl[N_MRT6PROTO].n_value, 550 nl[N_MF6CTABLE].n_value, 551 nl[N_MIF6TABLE].n_value); 552 #endif 553 } 554 exit(0); 555 } 556 #endif 557 protostat: 558 if (af == AF_INET || af == AF_UNSPEC) { 559 setprotoent(1); 560 setservent(1); 561 /* ugh, this is O(MN) ... why do we do this? */ 562 while ((p = getprotoent()) != NULL) { 563 for (tp = protox; tp->pr_name; tp++) 564 if (strcmp(tp->pr_name, p->p_name) == 0) 565 break; 566 if (tp->pr_name == 0 || tp->pr_wanted == 0) 567 continue; 568 printproto(tp, p->p_name); 569 tp->pr_wanted = 0; 570 } 571 endprotoent(); 572 for (tp = protox; tp->pr_name; tp++) 573 if (tp->pr_wanted) 574 printproto(tp, tp->pr_name); 575 } 576 #ifdef INET6 577 if (af == AF_INET6 || af == AF_UNSPEC) 578 for (tp = ip6protox; tp->pr_name; tp++) 579 printproto(tp, tp->pr_name); 580 #endif 581 if (af == AF_ARP || af == AF_UNSPEC) 582 for (tp = arpprotox; tp->pr_name; tp++) 583 printproto(tp, tp->pr_name); 584 #ifdef IPSEC 585 if (af == PF_KEY || af == AF_UNSPEC) 586 for (tp = pfkeyprotox; tp->pr_name; tp++) 587 printproto(tp, tp->pr_name); 588 #endif 589 #ifndef SMALL 590 if (af == AF_APPLETALK || af == AF_UNSPEC) 591 for (tp = atalkprotox; tp->pr_name; tp++) 592 printproto(tp, tp->pr_name); 593 if (af == AF_NS || af == AF_UNSPEC) 594 for (tp = nsprotox; tp->pr_name; tp++) 595 printproto(tp, tp->pr_name); 596 if (af == AF_ISO || af == AF_UNSPEC) 597 for (tp = isoprotox; tp->pr_name; tp++) 598 printproto(tp, tp->pr_name); 599 if ((af == AF_LOCAL || af == AF_UNSPEC) && !sflag) 600 unixpr(nl[N_UNIXSW].n_value); 601 #endif 602 exit(0); 603 } 604 605 /* 606 * Print out protocol statistics or control blocks (per sflag). 607 * If the interface was not specifically requested, and the symbol 608 * is not in the namelist, ignore this one. 609 */ 610 static void 611 printproto(tp, name) 612 struct protox *tp; 613 char *name; 614 { 615 void (*pr) __P((u_long, char *)); 616 u_long off; 617 618 if (sflag) { 619 if (iflag) { 620 if (tp->pr_istats) 621 intpr(interval, nl[N_IFNET].n_value, 622 tp->pr_istats); 623 return; 624 } 625 else { 626 pr = tp->pr_stats; 627 off = nl[tp->pr_sindex].n_value; 628 } 629 } else { 630 pr = tp->pr_cblocks; 631 off = nl[tp->pr_index].n_value; 632 } 633 if (pr != NULL && (off || af != AF_UNSPEC)) 634 (*pr)(off, name); 635 } 636 637 /* 638 * Read kernel memory, return 0 on success. 639 */ 640 int 641 kread(addr, buf, size) 642 u_long addr; 643 char *buf; 644 int size; 645 { 646 647 if (kvm_read(kvmd, addr, buf, size) != size) { 648 warnx("%s\n", kvm_geterr(kvmd)); 649 return (-1); 650 } 651 return (0); 652 } 653 654 char * 655 plural(n) 656 int n; 657 { 658 659 return (n != 1 ? "s" : ""); 660 } 661 662 char * 663 plurales(n) 664 int n; 665 { 666 667 return (n != 1 ? "es" : ""); 668 } 669 670 /* 671 * Find the protox for the given "well-known" name. 672 */ 673 static struct protox * 674 knownname(name) 675 char *name; 676 { 677 struct protox **tpp, *tp; 678 679 for (tpp = protoprotox; *tpp; tpp++) 680 for (tp = *tpp; tp->pr_name; tp++) 681 if (strcmp(tp->pr_name, name) == 0) 682 return (tp); 683 return (NULL); 684 } 685 686 /* 687 * Find the protox corresponding to name. 688 */ 689 static struct protox * 690 name2protox(name) 691 char *name; 692 { 693 struct protox *tp; 694 char **alias; /* alias from p->aliases */ 695 struct protoent *p; 696 697 /* 698 * Try to find the name in the list of "well-known" names. If that 699 * fails, check if name is an alias for an Internet protocol. 700 */ 701 if ((tp = knownname(name)) != NULL) 702 return (tp); 703 704 setprotoent(1); /* make protocol lookup cheaper */ 705 while ((p = getprotoent()) != NULL) { 706 /* assert: name not same as p->name */ 707 for (alias = p->p_aliases; *alias; alias++) 708 if (strcmp(name, *alias) == 0) { 709 endprotoent(); 710 return (knownname(p->p_name)); 711 } 712 } 713 endprotoent(); 714 return (NULL); 715 } 716 717 static void 718 usage() 719 { 720 const char *progname = getprogname(); 721 722 (void)fprintf(stderr, 723 "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", progname); 724 (void)fprintf(stderr, 725 " %s [-gimnrsSv] [-f address_family] [-M core] [-N system]\n", 726 progname); 727 (void)fprintf(stderr, 728 " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", progname); 729 (void)fprintf(stderr, 730 " %s [-M core] [-N system] [-p protocol]\n", progname); 731 (void)fprintf(stderr, 732 " %s [-M core] [-N system] [-p protocol] -P pcbaddr\n", progname); 733 exit(1); 734 } 735
Indexes created Thu Sep 25 16:09:42 GMT 2025