Annotation of src/usr.bin/netstat/main.c, Revision 1.58
1.58 ! henning 1: /* $OpenBSD: main.c,v 1.57 2005/05/02 10:07:19 jmc Exp $ */
1.2 deraadt 2: /* $NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1988, 1993
6: * Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.36 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: char copyright[] =
35: "@(#) Copyright (c) 1983, 1988, 1993\n\
36: Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94";
42: #else
1.58 ! henning 43: static char *rcsid = "$OpenBSD: main.c,v 1.57 2005/05/02 10:07:19 jmc Exp $";
1.1 deraadt 44: #endif
45: #endif /* not lint */
46:
47: #include <sys/param.h>
48: #include <sys/file.h>
49: #include <sys/protosw.h>
50: #include <sys/socket.h>
51:
52: #include <netinet/in.h>
53:
54: #include <ctype.h>
55: #include <errno.h>
56: #include <kvm.h>
57: #include <limits.h>
58: #include <netdb.h>
59: #include <nlist.h>
60: #include <paths.h>
61: #include <stdio.h>
62: #include <stdlib.h>
63: #include <string.h>
64: #include <unistd.h>
65: #include "netstat.h"
66:
67: struct nlist nl[] = {
1.55 deraadt 68: #define N_MBSTAT 0
1.1 deraadt 69: { "_mbstat" },
1.55 deraadt 70: #define N_IPSTAT 1
1.1 deraadt 71: { "_ipstat" },
1.55 deraadt 72: #define N_TCBTABLE 2
1.1 deraadt 73: { "_tcbtable" },
1.55 deraadt 74: #define N_TCPSTAT 3
1.1 deraadt 75: { "_tcpstat" },
1.55 deraadt 76: #define N_UDBTABLE 4
1.1 deraadt 77: { "_udbtable" },
1.55 deraadt 78: #define N_UDPSTAT 5
1.1 deraadt 79: { "_udpstat" },
1.55 deraadt 80: #define N_IFNET 6
1.1 deraadt 81: { "_ifnet" },
1.55 deraadt 82: #define N_ICMPSTAT 7
1.1 deraadt 83: { "_icmpstat" },
1.55 deraadt 84: #define N_RTSTAT 8
1.1 deraadt 85: { "_rtstat" },
1.55 deraadt 86: #define N_UNIXSW 9
1.1 deraadt 87: { "_unixsw" },
1.58 ! henning 88: #define N_RTREE 10
1.1 deraadt 89: { "_rt_tables"},
1.58 ! henning 90: #define N_FILE 11
1.1 deraadt 91: { "_file" },
1.58 ! henning 92: #define N_IGMPSTAT 12
1.1 deraadt 93: { "_igmpstat" },
1.58 ! henning 94: #define N_MRTPROTO 13
1.1 deraadt 95: { "_ip_mrtproto" },
1.58 ! henning 96: #define N_MRTSTAT 14
1.1 deraadt 97: { "_mrtstat" },
1.58 ! henning 98: #define N_MFCHASHTBL 15
1.1 deraadt 99: { "_mfchashtbl" },
1.58 ! henning 100: #define N_MFCHASH 16
1.1 deraadt 101: { "_mfchash" },
1.58 ! henning 102: #define N_VIFTABLE 17
1.1 deraadt 103: { "_viftable" },
1.58 ! henning 104: #define N_IPX 18
1.4 mickey 105: { "_ipxcbtable"},
1.58 ! henning 106: #define N_IPXSTAT 19
1.4 mickey 107: { "_ipxstat"},
1.58 ! henning 108: #define N_SPXSTAT 20
1.4 mickey 109: { "_spx_istat"},
1.58 ! henning 110: #define N_AHSTAT 21
1.8 angelos 111: { "_ahstat"},
1.58 ! henning 112: #define N_ESPSTAT 22
1.8 angelos 113: { "_espstat"},
1.58 ! henning 114: #define N_IP4STAT 23
1.21 angelos 115: { "_ipipstat"},
1.58 ! henning 116: #define N_DDPSTAT 24
1.12 denny 117: { "_ddpstat"},
1.58 ! henning 118: #define N_DDPCB 25
1.12 denny 119: { "_ddpcb"},
1.58 ! henning 120: #define N_ETHERIPSTAT 26
1.18 angelos 121: { "_etheripstat"},
1.58 ! henning 122: #define N_IP6STAT 27
1.19 itojun 123: { "_ip6stat" },
1.58 ! henning 124: #define N_ICMP6STAT 28
1.19 itojun 125: { "_icmp6stat" },
1.58 ! henning 126: #define N_PIM6STAT 29
1.19 itojun 127: { "_pim6stat" },
1.58 ! henning 128: #define N_MRT6PROTO 30
1.19 itojun 129: { "_ip6_mrtproto" },
1.58 ! henning 130: #define N_MRT6STAT 31
1.19 itojun 131: { "_mrt6stat" },
1.58 ! henning 132: #define N_MF6CTABLE 32
1.19 itojun 133: { "_mf6ctable" },
1.58 ! henning 134: #define N_MIF6TABLE 33
1.19 itojun 135: { "_mif6table" },
1.58 ! henning 136: #define N_MBPOOL 34
1.25 provos 137: { "_mbpool" },
1.58 ! henning 138: #define N_MCLPOOL 35
1.25 provos 139: { "_mclpool" },
1.58 ! henning 140: #define N_IPCOMPSTAT 36
1.26 jjbg 141: { "_ipcompstat" },
1.58 ! henning 142: #define N_RIP6STAT 37
1.32 itojun 143: { "_rip6stat" },
1.58 ! henning 144: #define N_CARPSTAT 38
1.39 mcbride 145: { "_carpstats" },
1.58 ! henning 146: #define N_RAWIPTABLE 39
1.40 markus 147: { "_rawcbtable" },
1.58 ! henning 148: #define N_RAWIP6TABLE 40
1.40 markus 149: { "_rawin6pcbtable" },
1.58 ! henning 150: #define N_PFSYNCSTAT 41
1.43 mcbride 151: { "_pfsyncstats" },
1.58 ! henning 152: #define N_PIMSTAT 42
1.50 mcbride 153: { "_pimstat" },
1.55 deraadt 154: { ""}
1.1 deraadt 155: };
156:
157: struct protox {
1.38 deraadt 158: u_char pr_index; /* index into nlist of cb head */
159: u_char pr_sindex; /* index into nlist of stat block */
160: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
161: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
162: void (*pr_stats)(u_long, char *); /* statistics printing routine */
163: char *pr_name; /* well-known name */
1.1 deraadt 164: } protox[] = {
165: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
166: tcp_stats, "tcp" },
167: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
168: udp_stats, "udp" },
1.40 markus 169: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.1 deraadt 170: ip_stats, "ip" },
171: { -1, N_ICMPSTAT, 1, 0,
172: icmp_stats, "icmp" },
173: { -1, N_IGMPSTAT, 1, 0,
174: igmp_stats, "igmp" },
1.8 angelos 175: { -1, N_AHSTAT, 1, 0,
1.15 angelos 176: ah_stats, "ah" },
1.8 angelos 177: { -1, N_ESPSTAT, 1, 0,
1.15 angelos 178: esp_stats, "esp" },
1.8 angelos 179: { -1, N_IP4STAT, 1, 0,
1.21 angelos 180: ipip_stats, "ipencap" },
1.18 angelos 181: { -1, N_ETHERIPSTAT, 1, 0,
182: etherip_stats,"etherip" },
1.29 mickey 183: { -1, N_IPCOMPSTAT, 1, 0,
184: ipcomp_stats, "ipcomp" },
1.44 deraadt 185: { -1, N_CARPSTAT, 1, 0,
186: carp_stats, "carp" },
187: { -1, N_PFSYNCSTAT, 1, 0,
188: pfsync_stats, "pfsync" },
1.50 mcbride 189: { -1, N_PIMSTAT, 1, 0,
190: pim_stats, "pim" },
1.1 deraadt 191: { -1, -1, 0, 0,
192: 0, 0 }
193: };
194:
1.19 itojun 195: #ifdef INET6
196: struct protox ip6protox[] = {
1.22 itojun 197: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.23 itojun 198: 0, "tcp" },
1.22 itojun 199: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.23 itojun 200: 0, "udp" },
1.40 markus 201: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.19 itojun 202: ip6_stats, "ip6" },
203: { -1, N_ICMP6STAT, 1, 0,
204: icmp6_stats, "icmp6" },
205: { -1, N_PIM6STAT, 1, 0,
206: pim6_stats, "pim6" },
1.32 itojun 207: { -1, N_RIP6STAT, 1, 0,
208: rip6_stats, "rip6" },
1.19 itojun 209: { -1, -1, 0, 0,
210: 0, 0 }
211: };
212: #endif
213:
1.4 mickey 214: struct protox ipxprotox[] = {
215: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
216: ipx_stats, "ipx" },
217: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
218: spx_stats, "spx" },
219: { -1, -1, 0, 0,
220: 0, 0 }
221: };
222:
1.12 denny 223: struct protox atalkprotox[] = {
224: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
225: ddp_stats, "ddp" },
226: { -1, -1, 0, 0,
227: 0, 0 }
228: };
229:
1.19 itojun 230: #ifndef INET6
1.34 deraadt 231: struct protox *protoprotox[] = {
1.58 ! henning 232: protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 233: };
1.19 itojun 234: #else
1.34 deraadt 235: struct protox *protoprotox[] = {
1.58 ! henning 236: protox, ip6protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 237: };
1.19 itojun 238: #endif
1.1 deraadt 239:
1.30 millert 240: static void printproto(struct protox *, char *);
241: static void usage(void);
242: static struct protox *name2protox(char *);
243: static struct protox *knownname(char *);
1.1 deraadt 244:
245: kvm_t *kvmd;
246:
247: int
1.34 deraadt 248: main(int argc, char *argv[])
1.1 deraadt 249: {
250: extern char *optarg;
251: extern int optind;
1.28 mpech 252: struct protoent *p;
253: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 254: int ch;
255: char *nlistf = NULL, *memf = NULL;
256: char buf[_POSIX2_LINE_MAX];
257:
258: af = AF_UNSPEC;
259:
1.56 reyk 260: while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:qrstuvW:w:")) != -1)
1.31 deraadt 261: switch (ch) {
1.1 deraadt 262: case 'A':
263: Aflag = 1;
264: break;
265: case 'a':
266: aflag = 1;
1.24 camield 267: break;
268: case 'b':
269: bflag = 1;
1.1 deraadt 270: break;
271: case 'd':
272: dflag = 1;
273: break;
274: case 'f':
1.4 mickey 275: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 276: af = AF_INET;
1.19 itojun 277: else if (strcmp(optarg, "inet6") == 0)
278: af = AF_INET6;
1.7 kstailey 279: else if (strcmp(optarg, "local") == 0)
280: af = AF_LOCAL;
1.1 deraadt 281: else if (strcmp(optarg, "unix") == 0)
282: af = AF_UNIX;
1.4 mickey 283: else if (strcmp(optarg, "ipx") == 0)
284: af = AF_IPX;
1.10 angelos 285: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 286: af = PF_KEY;
1.12 denny 287: else if (strcmp(optarg, "atalk") == 0)
288: af = AF_APPLETALK;
1.1 deraadt 289: else {
290: (void)fprintf(stderr,
291: "%s: %s: unknown address family\n",
1.2 deraadt 292: __progname, optarg);
1.1 deraadt 293: exit(1);
294: }
295: break;
296: case 'g':
297: gflag = 1;
298: break;
1.2 deraadt 299: case 'I':
1.1 deraadt 300: iflag = 1;
1.2 deraadt 301: interface = optarg;
1.1 deraadt 302: break;
303: case 'i':
304: iflag = 1;
305: break;
1.19 itojun 306: case 'l':
307: lflag = 1;
308: break;
1.1 deraadt 309: case 'M':
310: memf = optarg;
311: break;
312: case 'm':
313: mflag = 1;
314: break;
315: case 'N':
316: nlistf = optarg;
317: break;
318: case 'n':
319: nflag = 1;
320: break;
321: case 'p':
322: if ((tp = name2protox(optarg)) == NULL) {
323: (void)fprintf(stderr,
1.42 jmc 324: "%s: %s: unknown protocol\n",
1.2 deraadt 325: __progname, optarg);
1.1 deraadt 326: exit(1);
327: }
328: pflag = 1;
1.27 brian 329: break;
330: case 'q':
331: qflag = 1;
1.1 deraadt 332: break;
333: case 'r':
334: rflag = 1;
1.46 cedric 335: break;
1.1 deraadt 336: case 's':
337: ++sflag;
338: break;
339: case 't':
340: tflag = 1;
341: break;
342: case 'u':
343: af = AF_UNIX;
1.13 peter 344: break;
345: case 'v':
346: vflag = 1;
1.1 deraadt 347: break;
1.56 reyk 348: case 'W':
349: Wflag = 1;
350: interface = optarg;
351: break;
1.1 deraadt 352: case 'w':
353: interval = atoi(optarg);
354: iflag = 1;
355: break;
356: case '?':
357: default:
358: usage();
359: }
360: argv += optind;
361: argc -= optind;
362:
1.33 deraadt 363: /*
1.56 reyk 364: * Show per-interface statistics which don't need access to
365: * kernel memory (they're using IOCTLs)
366: */
367: if (Wflag) {
368: if (interface == NULL)
369: usage();
370: net80211_ifstats(interface);
371: exit(0);
372: }
373:
374: /*
1.33 deraadt 375: * Discard setgid privileges if not the running kernel so that bad
376: * guys can't print interesting stuff from kernel memory.
377: */
378: if (nlistf != NULL || memf != NULL) {
379: setegid(getgid());
380: setgid(getgid());
381: }
382:
383: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
384: buf)) == NULL) {
385: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
386: exit(1);
387: }
388: setegid(getgid());
389: setgid(getgid());
390:
1.1 deraadt 391: #define BACKWARD_COMPATIBILITY
392: #ifdef BACKWARD_COMPATIBILITY
393: if (*argv) {
394: if (isdigit(**argv)) {
395: interval = atoi(*argv);
396: if (interval <= 0)
397: usage();
398: ++argv;
399: iflag = 1;
400: }
401: if (*argv) {
402: nlistf = *argv;
403: if (*++argv)
404: memf = *argv;
405: }
406: }
407: #endif
1.14 deraadt 408:
1.1 deraadt 409: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
410: if (nlistf)
1.2 deraadt 411: fprintf(stderr, "%s: %s: no namelist\n", __progname,
412: nlistf);
1.1 deraadt 413: else
1.2 deraadt 414: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 415: exit(1);
416: }
417: if (mflag) {
1.25 provos 418: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
419: nl[N_MCLPOOL].n_value);
1.1 deraadt 420: exit(0);
421: }
422: if (pflag) {
1.45 markus 423: printproto(tp, tp->pr_name);
1.1 deraadt 424: exit(0);
425: }
426: /*
427: * Keep file descriptors open to avoid overhead
428: * of open/close on each call to get* routines.
429: */
430: sethostent(1);
431: setnetent(1);
1.56 reyk 432:
1.1 deraadt 433: if (iflag) {
434: intpr(interval, nl[N_IFNET].n_value);
435: exit(0);
436: }
437: if (rflag) {
438: if (sflag)
439: rt_stats(nl[N_RTSTAT].n_value);
440: else
441: routepr(nl[N_RTREE].n_value);
442: exit(0);
443: }
444: if (gflag) {
1.19 itojun 445: if (sflag) {
446: if (af == AF_INET || af == AF_UNSPEC)
447: mrt_stats(nl[N_MRTPROTO].n_value,
448: nl[N_MRTSTAT].n_value);
449: #ifdef INET6
450: if (af == AF_INET6 || af == AF_UNSPEC)
451: mrt6_stats(nl[N_MRT6PROTO].n_value,
452: nl[N_MRT6STAT].n_value);
453: #endif
454: }
455: else {
456: if (af == AF_INET || af == AF_UNSPEC)
457: mroutepr(nl[N_MRTPROTO].n_value,
458: nl[N_MFCHASHTBL].n_value,
459: nl[N_MFCHASH].n_value,
460: nl[N_VIFTABLE].n_value);
461: #ifdef INET6
462: if (af == AF_INET6 || af == AF_UNSPEC)
463: mroute6pr(nl[N_MRT6PROTO].n_value,
464: nl[N_MF6CTABLE].n_value,
465: nl[N_MIF6TABLE].n_value);
466: #endif
467: }
1.1 deraadt 468: exit(0);
469: }
470: if (af == AF_INET || af == AF_UNSPEC) {
471: setprotoent(1);
472: setservent(1);
473: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 474: while ((p = getprotoent())) {
1.1 deraadt 475: for (tp = protox; tp->pr_name; tp++)
476: if (strcmp(tp->pr_name, p->p_name) == 0)
477: break;
478: if (tp->pr_name == 0 || tp->pr_wanted == 0)
479: continue;
480: printproto(tp, p->p_name);
481: }
482: endprotoent();
483: }
1.19 itojun 484: #ifdef INET6
485: if (af == AF_INET6 || af == AF_UNSPEC)
486: for (tp = ip6protox; tp->pr_name; tp++)
487: printproto(tp, tp->pr_name);
488: #endif
1.4 mickey 489: if (af == AF_IPX || af == AF_UNSPEC)
490: for (tp = ipxprotox; tp->pr_name; tp++)
1.1 deraadt 491: printproto(tp, tp->pr_name);
492: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
493: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 494: if (af == AF_APPLETALK || af == AF_UNSPEC)
495: for (tp = atalkprotox; tp->pr_name; tp++)
496: printproto(tp, tp->pr_name);
1.1 deraadt 497: exit(0);
498: }
499:
500: /*
501: * Print out protocol statistics or control blocks (per sflag).
502: * If the interface was not specifically requested, and the symbol
503: * is not in the namelist, ignore this one.
504: */
505: static void
1.34 deraadt 506: printproto(struct protox *tp, char *name)
1.1 deraadt 507: {
1.38 deraadt 508: void (*pr)(u_long, char *);
1.35 dhartmei 509: u_char i;
1.1 deraadt 510:
511: if (sflag) {
512: pr = tp->pr_stats;
1.35 dhartmei 513: i = tp->pr_sindex;
1.1 deraadt 514: } else {
515: pr = tp->pr_cblocks;
1.35 dhartmei 516: i = tp->pr_index;
1.1 deraadt 517: }
1.35 dhartmei 518: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
519: (nl[i].n_value || af != AF_UNSPEC))
520: (*pr)(nl[i].n_value, name);
1.1 deraadt 521: }
522:
523: /*
524: * Read kernel memory, return 0 on success.
525: */
526: int
1.53 jaredy 527: kread(u_long addr, void *buf, int size)
1.1 deraadt 528: {
529:
530: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 531: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 532: kvm_geterr(kvmd));
533: return (-1);
534: }
535: return (0);
536: }
537:
538: char *
1.34 deraadt 539: plural(int n)
1.1 deraadt 540: {
541: return (n != 1 ? "s" : "");
542: }
543:
544: char *
1.34 deraadt 545: plurales(int n)
1.1 deraadt 546: {
547: return (n != 1 ? "es" : "");
548: }
549:
550: /*
551: * Find the protox for the given "well-known" name.
552: */
553: static struct protox *
1.34 deraadt 554: knownname(char *name)
1.1 deraadt 555: {
556: struct protox **tpp, *tp;
557:
558: for (tpp = protoprotox; *tpp; tpp++)
559: for (tp = *tpp; tp->pr_name; tp++)
560: if (strcmp(tp->pr_name, name) == 0)
561: return (tp);
562: return (NULL);
563: }
564:
565: /*
566: * Find the protox corresponding to name.
567: */
568: static struct protox *
1.34 deraadt 569: name2protox(char *name)
1.1 deraadt 570: {
571: struct protox *tp;
572: char **alias; /* alias from p->aliases */
573: struct protoent *p;
574:
575: /*
576: * Try to find the name in the list of "well-known" names. If that
577: * fails, check if name is an alias for an Internet protocol.
578: */
1.11 millert 579: if ((tp = knownname(name)))
1.1 deraadt 580: return (tp);
581:
582: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 583: while ((p = getprotoent())) {
1.1 deraadt 584: /* assert: name not same as p->name */
585: for (alias = p->p_aliases; *alias; alias++)
586: if (strcmp(name, *alias) == 0) {
587: endprotoent();
588: return (knownname(p->p_name));
589: }
590: }
591: endprotoent();
592: return (NULL);
593: }
594:
595: static void
1.34 deraadt 596: usage(void)
1.1 deraadt 597: {
598: (void)fprintf(stderr,
1.2 deraadt 599: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 600: (void)fprintf(stderr,
1.54 jaredy 601: " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 602: (void)fprintf(stderr,
1.37 jmc 603: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 604: (void)fprintf(stderr,
1.47 jmc 605: " %s [-s] [-M core] [-N system] [-p protocol]\n", __progname);
1.37 jmc 606: (void)fprintf(stderr,
1.41 jmc 607: " %s [-a] [-f address_family] [-i | -I interface]\n", __progname);
1.56 reyk 608: (void)fprintf(stderr,
1.57 jmc 609: " %s [-W interface]\n", __progname);
1.1 deraadt 610: exit(1);
611: }
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