main.c revision 1.36
1 /* $NetBSD: main.c,v 1.36 2002/07/02 21:34:18 soren 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 1.36 2002/07/02 21:34:18 soren 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 #define N_RIP6STAT 55 183 { "_rip6stat" }, 184 { "" }, 185 }; 186 187 struct protox { 188 u_char pr_index; /* index into nlist of cb head */ 189 u_char pr_sindex; /* index into nlist of stat block */ 190 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 191 void (*pr_cblocks) /* control blocks printing routine */ 192 __P((u_long, char *)); 193 void (*pr_stats) /* statistics printing routine */ 194 __P((u_long, char *)); 195 void (*pr_istats) 196 __P((char *)); /* per/if statistics printing routine */ 197 void (*pr_dump) /* PCB state dump routine */ 198 __P((u_long)); 199 char *pr_name; /* well-known name */ 200 } protox[] = { 201 { N_TCBTABLE, N_TCPSTAT, 1, protopr, 202 tcp_stats, NULL, tcp_dump, "tcp" }, 203 { N_UDBTABLE, N_UDPSTAT, 1, protopr, 204 udp_stats, NULL, 0, "udp" }, 205 { -1, N_IPSTAT, 1, 0, 206 ip_stats, NULL, 0, "ip" }, 207 { -1, N_ICMPSTAT, 1, 0, 208 icmp_stats, NULL, 0, "icmp" }, 209 { -1, N_IGMPSTAT, 1, 0, 210 igmp_stats, NULL, 0, "igmp" }, 211 #ifdef IPSEC 212 { -1, N_IPSECSTAT, 1, 0, 213 ipsec_stats, NULL, 0, "ipsec" }, 214 #endif 215 { -1, -1, 0, 0, 216 0, NULL, 0, 0 } 217 }; 218 219 #ifdef INET6 220 struct protox ip6protox[] = { 221 { -1, N_IP6STAT, 1, 0, 222 ip6_stats, ip6_ifstats, 0, "ip6" }, 223 { -1, N_ICMP6STAT, 1, 0, 224 icmp6_stats, icmp6_ifstats, 0, "icmp6" }, 225 #ifdef TCP6 226 { N_TCB6, N_TCP6STAT, 1, ip6protopr, 227 tcp6_stats, NULL, tcp6_dump, "tcp6" }, 228 #else 229 { N_TCB6, N_TCP6STAT, 1, ip6protopr, 230 tcp_stats, NULL, tcp_dump, "tcp6" }, 231 #endif 232 { N_UDB6, N_UDP6STAT, 1, ip6protopr, 233 udp6_stats, NULL, 0, "udp6" }, 234 #ifdef IPSEC 235 { -1, N_IPSEC6STAT, 1, 0, 236 ipsec_stats, NULL, 0, "ipsec6" }, 237 #endif 238 { -1, N_PIM6STAT, 1, 0, 239 pim6_stats, NULL, 0, "pim6" }, 240 { -1, N_RIP6STAT, 1, 0, 241 rip6_stats, NULL, 0, "rip6" }, 242 { -1, -1, 0, 0, 243 0, NULL, 0, 0 } 244 }; 245 #endif 246 247 struct protox arpprotox[] = { 248 { -1, N_ARPSTAT, 1, 0, 249 arp_stats, NULL, 0, "arp" }, 250 { -1, -1, 0, 0, 251 0, NULL, 0, 0 } 252 }; 253 254 #ifdef IPSEC 255 struct protox pfkeyprotox[] = { 256 { -1, N_PFKEYSTAT, 1, 0, 257 pfkey_stats, NULL, 0, "pfkey" }, 258 { -1, -1, 0, 0, 259 0, NULL, 0, 0 } 260 }; 261 #endif 262 263 #ifndef SMALL 264 struct protox atalkprotox[] = { 265 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 266 ddp_stats, NULL, 0, "ddp" }, 267 { -1, -1, 0, 0, 268 0, NULL, 0 } 269 }; 270 271 struct protox nsprotox[] = { 272 { N_IDP, N_IDPSTAT, 1, nsprotopr, 273 idp_stats, NULL, 0, "idp" }, 274 { N_IDP, N_SPPSTAT, 1, nsprotopr, 275 spp_stats, NULL, 0, "spp" }, 276 { -1, N_NSERR, 1, 0, 277 nserr_stats, NULL, 0, "ns_err" }, 278 { -1, -1, 0, 0, 279 0, NULL, 0 } 280 }; 281 282 struct protox isoprotox[] = { 283 { ISO_TP, N_TPSTAT, 1, iso_protopr, 284 tp_stats, NULL, 0, "tp" }, 285 { N_CLTP, N_CLTPSTAT, 1, iso_protopr, 286 cltp_stats, NULL, 0, "cltp" }, 287 { -1, N_CLNPSTAT, 1, 0, 288 clnp_stats, NULL, 0, "clnp"}, 289 { -1, N_ESISSTAT, 1, 0, 290 esis_stats, NULL, 0, "esis"}, 291 { -1, -1, 0, 0, 292 0, NULL, 0, 0 } 293 }; 294 #endif 295 296 struct protox *protoprotox[] = { protox, 297 #ifdef INET6 298 ip6protox, 299 #endif 300 arpprotox, 301 #ifdef IPSEC 302 pfkeyprotox, 303 #endif 304 #ifndef SMALL 305 atalkprotox, nsprotox, isoprotox, 306 #endif 307 NULL }; 308 309 int main __P((int, char *[])); 310 static void printproto __P((struct protox *, char *)); 311 static void usage __P((void)); 312 static struct protox *name2protox __P((char *)); 313 static struct protox *knownname __P((char *)); 314 315 kvm_t *kvmd; 316 317 int 318 main(argc, argv) 319 int argc; 320 char *argv[]; 321 { 322 struct protoent *p; 323 struct protox *tp; /* for printing cblocks & stats */ 324 int ch; 325 char *nlistf = NULL, *memf = NULL; 326 char buf[_POSIX2_LINE_MAX], *cp; 327 u_long pcbaddr; 328 gid_t egid = getegid(); 329 330 (void)setegid(getgid()); 331 tp = NULL; 332 af = AF_UNSPEC; 333 pcbaddr = 0; 334 335 while ((ch = getopt(argc, argv, "Aabdf:ghI:LliM:mN:nP:p:rsStuvw:")) != -1) 336 switch(ch) { 337 case 'A': 338 Aflag = 1; 339 break; 340 case 'a': 341 aflag = 1; 342 break; 343 case 'b': 344 bflag = 1; 345 break; 346 case 'd': 347 dflag = 1; 348 break; 349 case 'f': 350 if (strcmp(optarg, "ns") == 0) 351 af = AF_NS; 352 else if (strcmp(optarg, "inet") == 0) 353 af = AF_INET; 354 else if (strcmp(optarg, "inet6") == 0) 355 af = AF_INET6; 356 else if (strcmp(optarg, "arp") == 0) 357 af = AF_ARP; 358 else if (strcmp(optarg, "pfkey") == 0) 359 af = PF_KEY; 360 else if (strcmp(optarg, "unix") == 0 361 || strcmp(optarg, "local") == 0) 362 af = AF_LOCAL; 363 else if (strcmp(optarg, "iso") == 0) 364 af = AF_ISO; 365 else if (strcmp(optarg, "atalk") == 0) 366 af = AF_APPLETALK; 367 else 368 errx(1, "%s: unknown address family", 369 optarg); 370 break; 371 #ifndef SMALL 372 case 'g': 373 gflag = 1; 374 break; 375 #endif 376 case 'I': 377 iflag = 1; 378 interface = optarg; 379 break; 380 case 'i': 381 iflag = 1; 382 break; 383 case 'L': 384 Lflag = 1; 385 break; 386 case 'l': 387 lflag = 1; 388 break; 389 case 'M': 390 memf = optarg; 391 break; 392 case 'm': 393 mflag = 1; 394 break; 395 case 'N': 396 nlistf = optarg; 397 break; 398 case 'n': 399 numeric_addr = numeric_port = 1; 400 break; 401 case 'P': 402 pcbaddr = strtoul(optarg, &cp, 16); 403 if (*cp != '\0' || errno == ERANGE) 404 errx(1, "invalid PCB address %s", 405 optarg); 406 Pflag = 1; 407 break; 408 case 'p': 409 if ((tp = name2protox(optarg)) == NULL) 410 errx(1, "%s: unknown or uninstrumented protocol", 411 optarg); 412 pflag = 1; 413 break; 414 case 'r': 415 rflag = 1; 416 break; 417 case 's': 418 ++sflag; 419 break; 420 case 'S': 421 numeric_addr = 1; 422 break; 423 case 't': 424 tflag = 1; 425 break; 426 case 'u': 427 af = AF_LOCAL; 428 break; 429 case 'v': 430 vflag = 1; 431 break; 432 case 'w': 433 interval = atoi(optarg); 434 iflag = 1; 435 break; 436 case '?': 437 default: 438 usage(); 439 } 440 argv += optind; 441 argc -= optind; 442 443 #define BACKWARD_COMPATIBILITY 444 #ifdef BACKWARD_COMPATIBILITY 445 if (*argv) { 446 if (isdigit(**argv)) { 447 interval = atoi(*argv); 448 if (interval <= 0) 449 usage(); 450 ++argv; 451 iflag = 1; 452 } 453 if (*argv) { 454 nlistf = *argv; 455 if (*++argv) 456 memf = *argv; 457 } 458 } 459 #endif 460 461 /* 462 * Discard setgid privileges. If not the running kernel, we toss 463 * them away totally so that bad guys can't print interesting stuff 464 * from kernel memory, otherwise switch back to kmem for the 465 * duration of the kvm_openfiles() call. 466 */ 467 if (nlistf != NULL || memf != NULL || Pflag) 468 (void)setgid(getgid()); 469 else 470 (void)setegid(egid); 471 472 if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 473 buf)) == NULL) 474 errx(1, "%s", buf); 475 476 /* do this now anyway */ 477 if (nlistf == NULL && memf == NULL) 478 (void)setgid(getgid()); 479 480 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 481 if (nlistf) 482 errx(1, "%s: no namelist", nlistf); 483 else 484 errx(1, "no namelist"); 485 } 486 if (mflag) { 487 mbpr(nl[N_MBSTAT].n_value, nl[N_MSIZE].n_value, 488 nl[N_MCLBYTES].n_value, nl[N_MBPOOL].n_value, 489 nl[N_MCLPOOL].n_value); 490 exit(0); 491 } 492 if (Pflag) { 493 if (tp == NULL) { 494 /* Default to TCP. */ 495 tp = name2protox("tcp"); 496 } 497 if (tp->pr_dump) 498 (*tp->pr_dump)(pcbaddr); 499 else 500 printf("%s: no PCB dump routine\n", tp->pr_name); 501 exit(0); 502 } 503 if (pflag) { 504 if (iflag && tp->pr_istats) 505 intpr(interval, nl[N_IFNET].n_value, tp->pr_istats); 506 else if (tp->pr_stats) 507 (*tp->pr_stats)(nl[tp->pr_sindex].n_value, 508 tp->pr_name); 509 else 510 printf("%s: no stats routine\n", tp->pr_name); 511 exit(0); 512 } 513 /* 514 * Keep file descriptors open to avoid overhead 515 * of open/close on each call to get* routines. 516 */ 517 sethostent(1); 518 setnetent(1); 519 if (iflag) { 520 if (af != AF_UNSPEC) 521 goto protostat; 522 523 intpr(interval, nl[N_IFNET].n_value, NULL); 524 exit(0); 525 } 526 if (rflag) { 527 if (sflag) 528 rt_stats(nl[N_RTSTAT].n_value); 529 else 530 routepr(nl[N_RTREE].n_value); 531 exit(0); 532 } 533 #ifndef SMALL 534 if (gflag) { 535 if (sflag) { 536 if (af == AF_INET || af == AF_UNSPEC) 537 mrt_stats(nl[N_MRTPROTO].n_value, 538 nl[N_MRTSTAT].n_value); 539 #ifdef INET6 540 if (af == AF_INET6 || af == AF_UNSPEC) 541 mrt6_stats(nl[N_MRT6PROTO].n_value, 542 nl[N_MRT6STAT].n_value); 543 #endif 544 } 545 else { 546 if (af == AF_INET || af == AF_UNSPEC) 547 mroutepr(nl[N_MRTPROTO].n_value, 548 nl[N_MFCHASHTBL].n_value, 549 nl[N_MFCHASH].n_value, 550 nl[N_VIFTABLE].n_value); 551 #ifdef INET6 552 if (af == AF_INET6 || af == AF_UNSPEC) 553 mroute6pr(nl[N_MRT6PROTO].n_value, 554 nl[N_MF6CTABLE].n_value, 555 nl[N_MIF6TABLE].n_value); 556 #endif 557 } 558 exit(0); 559 } 560 #endif 561 protostat: 562 if (af == AF_INET || af == AF_UNSPEC) { 563 setprotoent(1); 564 setservent(1); 565 /* ugh, this is O(MN) ... why do we do this? */ 566 while ((p = getprotoent()) != NULL) { 567 for (tp = protox; tp->pr_name; tp++) 568 if (strcmp(tp->pr_name, p->p_name) == 0) 569 break; 570 if (tp->pr_name == 0 || tp->pr_wanted == 0) 571 continue; 572 printproto(tp, p->p_name); 573 tp->pr_wanted = 0; 574 } 575 endprotoent(); 576 for (tp = protox; tp->pr_name; tp++) 577 if (tp->pr_wanted) 578 printproto(tp, tp->pr_name); 579 } 580 #ifdef INET6 581 if (af == AF_INET6 || af == AF_UNSPEC) 582 for (tp = ip6protox; tp->pr_name; tp++) 583 printproto(tp, tp->pr_name); 584 #endif 585 if (af == AF_ARP || af == AF_UNSPEC) 586 for (tp = arpprotox; tp->pr_name; tp++) 587 printproto(tp, tp->pr_name); 588 #ifdef IPSEC 589 if (af == PF_KEY || af == AF_UNSPEC) 590 for (tp = pfkeyprotox; tp->pr_name; tp++) 591 printproto(tp, tp->pr_name); 592 #endif 593 #ifndef SMALL 594 if (af == AF_APPLETALK || af == AF_UNSPEC) 595 for (tp = atalkprotox; tp->pr_name; tp++) 596 printproto(tp, tp->pr_name); 597 if (af == AF_NS || af == AF_UNSPEC) 598 for (tp = nsprotox; tp->pr_name; tp++) 599 printproto(tp, tp->pr_name); 600 if (af == AF_ISO || af == AF_UNSPEC) 601 for (tp = isoprotox; tp->pr_name; tp++) 602 printproto(tp, tp->pr_name); 603 if ((af == AF_LOCAL || af == AF_UNSPEC) && !sflag) 604 unixpr(nl[N_UNIXSW].n_value); 605 #endif 606 exit(0); 607 } 608 609 /* 610 * Print out protocol statistics or control blocks (per sflag). 611 * If the interface was not specifically requested, and the symbol 612 * is not in the namelist, ignore this one. 613 */ 614 static void 615 printproto(tp, name) 616 struct protox *tp; 617 char *name; 618 { 619 void (*pr) __P((u_long, char *)); 620 u_long off; 621 622 if (sflag) { 623 if (iflag) { 624 if (tp->pr_istats) 625 intpr(interval, nl[N_IFNET].n_value, 626 tp->pr_istats); 627 return; 628 } 629 else { 630 pr = tp->pr_stats; 631 off = nl[tp->pr_sindex].n_value; 632 } 633 } else { 634 pr = tp->pr_cblocks; 635 off = nl[tp->pr_index].n_value; 636 } 637 if (pr != NULL && (off || af != AF_UNSPEC)) 638 (*pr)(off, name); 639 } 640 641 /* 642 * Read kernel memory, return 0 on success. 643 */ 644 int 645 kread(addr, buf, size) 646 u_long addr; 647 char *buf; 648 int size; 649 { 650 651 if (kvm_read(kvmd, addr, buf, size) != size) { 652 warnx("%s", kvm_geterr(kvmd)); 653 return (-1); 654 } 655 return (0); 656 } 657 658 char * 659 plural(n) 660 int n; 661 { 662 663 return (n != 1 ? "s" : ""); 664 } 665 666 char * 667 plurales(n) 668 int n; 669 { 670 671 return (n != 1 ? "es" : ""); 672 } 673 674 /* 675 * Find the protox for the given "well-known" name. 676 */ 677 static struct protox * 678 knownname(name) 679 char *name; 680 { 681 struct protox **tpp, *tp; 682 683 for (tpp = protoprotox; *tpp; tpp++) 684 for (tp = *tpp; tp->pr_name; tp++) 685 if (strcmp(tp->pr_name, name) == 0) 686 return (tp); 687 return (NULL); 688 } 689 690 /* 691 * Find the protox corresponding to name. 692 */ 693 static struct protox * 694 name2protox(name) 695 char *name; 696 { 697 struct protox *tp; 698 char **alias; /* alias from p->aliases */ 699 struct protoent *p; 700 701 /* 702 * Try to find the name in the list of "well-known" names. If that 703 * fails, check if name is an alias for an Internet protocol. 704 */ 705 if ((tp = knownname(name)) != NULL) 706 return (tp); 707 708 setprotoent(1); /* make protocol lookup cheaper */ 709 while ((p = getprotoent()) != NULL) { 710 /* assert: name not same as p->name */ 711 for (alias = p->p_aliases; *alias; alias++) 712 if (strcmp(name, *alias) == 0) { 713 endprotoent(); 714 return (knownname(p->p_name)); 715 } 716 } 717 endprotoent(); 718 return (NULL); 719 } 720 721 static void 722 usage() 723 { 724 const char *progname = getprogname(); 725 726 (void)fprintf(stderr, 727 "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", progname); 728 (void)fprintf(stderr, 729 " %s [-bdgiLmnrsSv] [-f address_family] [-M core] [-N system]\n", 730 progname); 731 (void)fprintf(stderr, 732 " %s [-dn] [-I interface] [-M core] [-N system] [-w wait]\n", progname); 733 (void)fprintf(stderr, 734 " %s [-p protocol] [-M core] [-N system]\n", progname); 735 (void)fprintf(stderr, 736 " %s [-p protocol] [-M core] [-N system] -P pcbaddr\n", progname); 737 (void)fprintf(stderr, 738 " %s [-p protocol] [-i] [-I Interface] \n", progname); 739 (void)fprintf(stderr, 740 " %s [-s] [-f address_family] [-i] [-I Interface]\n", progname); 741 exit(1); 742 } 743
Indexes created Thu Sep 25 15:09:46 GMT 2025