Annotation of src/usr.bin/netstat/main.c, Revision 1.44
1.44 ! deraadt 1: /* $OpenBSD: main.c,v 1.43 2003/12/15 07:11:31 mcbride 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
1.44 ! deraadt 43: static char *rcsid = "$OpenBSD: main.c,v 1.43 2003/12/15 07:11:31 mcbride 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[] = {
68: #define N_MBSTAT 0
69: { "_mbstat" },
70: #define N_IPSTAT 1
71: { "_ipstat" },
72: #define N_TCBTABLE 2
73: { "_tcbtable" },
74: #define N_TCPSTAT 3
75: { "_tcpstat" },
76: #define N_UDBTABLE 4
77: { "_udbtable" },
78: #define N_UDPSTAT 5
79: { "_udpstat" },
80: #define N_IFNET 6
81: { "_ifnet" },
82: #define N_IMP 7
83: { "_imp_softc" },
84: #define N_ICMPSTAT 8
85: { "_icmpstat" },
86: #define N_RTSTAT 9
87: { "_rtstat" },
88: #define N_UNIXSW 10
89: { "_unixsw" },
90: #define N_IDP 11
91: { "_nspcb"},
92: #define N_IDPSTAT 12
93: { "_idpstat"},
94: #define N_SPPSTAT 13
95: { "_spp_istat"},
96: #define N_NSERR 14
97: { "_ns_errstat"},
98: #define N_CLNPSTAT 15
99: { "_clnp_stat"},
100: #define IN_NOTUSED 16
101: { "_tp_inpcb" },
102: #define ISO_TP 17
103: { "_tp_refinfo" },
104: #define N_TPSTAT 18
105: { "_tp_stat" },
106: #define N_ESISSTAT 19
107: { "_esis_stat"},
108: #define N_NIMP 20
109: { "_nimp"},
110: #define N_RTREE 21
111: { "_rt_tables"},
112: #define N_CLTP 22
113: { "_cltb"},
114: #define N_CLTPSTAT 23
115: { "_cltpstat"},
116: #define N_NFILE 24
117: { "_nfile" },
118: #define N_FILE 25
119: { "_file" },
120: #define N_IGMPSTAT 26
121: { "_igmpstat" },
122: #define N_MRTPROTO 27
123: { "_ip_mrtproto" },
124: #define N_MRTSTAT 28
125: { "_mrtstat" },
126: #define N_MFCHASHTBL 29
127: { "_mfchashtbl" },
128: #define N_MFCHASH 30
129: { "_mfchash" },
130: #define N_VIFTABLE 31
131: { "_viftable" },
1.4 mickey 132: #define N_IPX 32
133: { "_ipxcbtable"},
134: #define N_IPXSTAT 33
135: { "_ipxstat"},
136: #define N_SPXSTAT 34
137: { "_spx_istat"},
138: #define N_IPXERR 35
139: { "_ipx_errstat"},
1.8 angelos 140: #define N_AHSTAT 36
141: { "_ahstat"},
142: #define N_ESPSTAT 37
143: { "_espstat"},
144: #define N_IP4STAT 38
1.21 angelos 145: { "_ipipstat"},
1.12 denny 146: #define N_DDPSTAT 39
147: { "_ddpstat"},
148: #define N_DDPCB 40
149: { "_ddpcb"},
1.18 angelos 150: #define N_ETHERIPSTAT 41
151: { "_etheripstat"},
1.19 itojun 152: #define N_IP6STAT 42
153: { "_ip6stat" },
154: #define N_ICMP6STAT 43
155: { "_icmp6stat" },
156: #define N_IPSECSTAT 44
157: { "_ipsecstat" },
158: #define N_IPSEC6STAT 45
159: { "_ipsec6stat" },
160: #define N_PIM6STAT 46
161: { "_pim6stat" },
162: #define N_MRT6PROTO 47
163: { "_ip6_mrtproto" },
164: #define N_MRT6STAT 48
165: { "_mrt6stat" },
166: #define N_MF6CTABLE 49
167: { "_mf6ctable" },
168: #define N_MIF6TABLE 50
169: { "_mif6table" },
1.25 provos 170: #define N_MBPOOL 51
171: { "_mbpool" },
172: #define N_MCLPOOL 52
173: { "_mclpool" },
1.29 mickey 174: #define N_IPCOMPSTAT 53
1.26 jjbg 175: { "_ipcompstat" },
1.32 itojun 176: #define N_RIP6STAT 54
177: { "_rip6stat" },
1.39 mcbride 178: #define N_CARPSTAT 55
179: { "_carpstats" },
1.40 markus 180: #define N_RAWIPTABLE 56
181: { "_rawcbtable" },
182: #define N_RAWIP6TABLE 57
183: { "_rawin6pcbtable" },
1.43 mcbride 184: #define N_PFSYNCSTAT 58
185: { "_pfsyncstats" },
1.11 millert 186: { ""},
1.1 deraadt 187: };
188:
189: struct protox {
1.38 deraadt 190: u_char pr_index; /* index into nlist of cb head */
191: u_char pr_sindex; /* index into nlist of stat block */
192: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
193: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
194: void (*pr_stats)(u_long, char *); /* statistics printing routine */
195: char *pr_name; /* well-known name */
1.1 deraadt 196: } protox[] = {
197: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
198: tcp_stats, "tcp" },
199: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
200: udp_stats, "udp" },
1.40 markus 201: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.1 deraadt 202: ip_stats, "ip" },
203: { -1, N_ICMPSTAT, 1, 0,
204: icmp_stats, "icmp" },
205: { -1, N_IGMPSTAT, 1, 0,
206: igmp_stats, "igmp" },
1.8 angelos 207: { -1, N_AHSTAT, 1, 0,
1.15 angelos 208: ah_stats, "ah" },
1.8 angelos 209: { -1, N_ESPSTAT, 1, 0,
1.15 angelos 210: esp_stats, "esp" },
1.8 angelos 211: { -1, N_IP4STAT, 1, 0,
1.21 angelos 212: ipip_stats, "ipencap" },
1.18 angelos 213: { -1, N_ETHERIPSTAT, 1, 0,
214: etherip_stats,"etherip" },
1.29 mickey 215: { -1, N_IPCOMPSTAT, 1, 0,
216: ipcomp_stats, "ipcomp" },
1.44 ! deraadt 217: { -1, N_CARPSTAT, 1, 0,
! 218: carp_stats, "carp" },
! 219: { -1, N_PFSYNCSTAT, 1, 0,
! 220: pfsync_stats, "pfsync" },
1.1 deraadt 221: { -1, -1, 0, 0,
222: 0, 0 }
223: };
224:
1.19 itojun 225: #ifdef INET6
226: struct protox ip6protox[] = {
1.22 itojun 227: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.23 itojun 228: 0, "tcp" },
1.22 itojun 229: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.23 itojun 230: 0, "udp" },
1.40 markus 231: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.19 itojun 232: ip6_stats, "ip6" },
233: { -1, N_ICMP6STAT, 1, 0,
234: icmp6_stats, "icmp6" },
235: { -1, N_PIM6STAT, 1, 0,
236: pim6_stats, "pim6" },
1.32 itojun 237: { -1, N_RIP6STAT, 1, 0,
238: rip6_stats, "rip6" },
1.19 itojun 239: { -1, -1, 0, 0,
240: 0, 0 }
241: };
242: #endif
243:
1.4 mickey 244: struct protox ipxprotox[] = {
245: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
246: ipx_stats, "ipx" },
247: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
248: spx_stats, "spx" },
249: { -1, -1, 0, 0,
250: 0, 0 }
251: };
252:
1.1 deraadt 253: struct protox nsprotox[] = {
254: { N_IDP, N_IDPSTAT, 1, nsprotopr,
255: idp_stats, "idp" },
256: { N_IDP, N_SPPSTAT, 1, nsprotopr,
257: spp_stats, "spp" },
258: { -1, N_NSERR, 1, 0,
259: nserr_stats, "ns_err" },
260: { -1, -1, 0, 0,
261: 0, 0 }
262: };
263:
264: struct protox isoprotox[] = {
265: { ISO_TP, N_TPSTAT, 1, iso_protopr,
266: tp_stats, "tp" },
267: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
268: cltp_stats, "cltp" },
269: { -1, N_CLNPSTAT, 1, 0,
270: clnp_stats, "clnp"},
271: { -1, N_ESISSTAT, 1, 0,
272: esis_stats, "esis"},
273: { -1, -1, 0, 0,
274: 0, 0 }
275: };
276:
1.12 denny 277: struct protox atalkprotox[] = {
278: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
279: ddp_stats, "ddp" },
280: { -1, -1, 0, 0,
281: 0, 0 }
282: };
283:
1.19 itojun 284: #ifndef INET6
1.34 deraadt 285: struct protox *protoprotox[] = {
286: protox, ipxprotox, nsprotox, isoprotox, atalkprotox, NULL
287: };
1.19 itojun 288: #else
1.34 deraadt 289: struct protox *protoprotox[] = {
290: protox, ip6protox, ipxprotox, nsprotox, isoprotox, atalkprotox, NULL
291: };
1.19 itojun 292: #endif
1.1 deraadt 293:
1.30 millert 294: static void printproto(struct protox *, char *);
295: static void usage(void);
296: static struct protox *name2protox(char *);
297: static struct protox *knownname(char *);
1.1 deraadt 298:
299: kvm_t *kvmd;
300:
301: int
1.34 deraadt 302: main(int argc, char *argv[])
1.1 deraadt 303: {
304: extern char *optarg;
305: extern int optind;
1.28 mpech 306: struct protoent *p;
307: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 308: int ch;
309: char *nlistf = NULL, *memf = NULL;
310: char buf[_POSIX2_LINE_MAX];
311:
312: af = AF_UNSPEC;
313:
1.27 brian 314: while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:qrstuvw:")) != -1)
1.31 deraadt 315: switch (ch) {
1.1 deraadt 316: case 'A':
317: Aflag = 1;
318: break;
319: case 'a':
320: aflag = 1;
1.24 camield 321: break;
322: case 'b':
323: bflag = 1;
1.1 deraadt 324: break;
325: case 'd':
326: dflag = 1;
327: break;
328: case 'f':
1.4 mickey 329: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 330: af = AF_INET;
1.19 itojun 331: else if (strcmp(optarg, "inet6") == 0)
332: af = AF_INET6;
1.7 kstailey 333: else if (strcmp(optarg, "local") == 0)
334: af = AF_LOCAL;
1.1 deraadt 335: else if (strcmp(optarg, "unix") == 0)
336: af = AF_UNIX;
1.4 mickey 337: else if (strcmp(optarg, "ipx") == 0)
338: af = AF_IPX;
339: else if (strcmp(optarg, "ns") == 0)
340: af = AF_NS;
1.1 deraadt 341: else if (strcmp(optarg, "iso") == 0)
342: af = AF_ISO;
1.10 angelos 343: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 344: af = PF_KEY;
1.12 denny 345: else if (strcmp(optarg, "atalk") == 0)
346: af = AF_APPLETALK;
1.1 deraadt 347: else {
348: (void)fprintf(stderr,
349: "%s: %s: unknown address family\n",
1.2 deraadt 350: __progname, optarg);
1.1 deraadt 351: exit(1);
352: }
353: break;
354: case 'g':
355: gflag = 1;
356: break;
1.2 deraadt 357: case 'I':
1.1 deraadt 358: iflag = 1;
1.2 deraadt 359: interface = optarg;
1.1 deraadt 360: break;
361: case 'i':
362: iflag = 1;
363: break;
1.19 itojun 364: case 'l':
365: lflag = 1;
366: break;
1.1 deraadt 367: case 'M':
368: memf = optarg;
369: break;
370: case 'm':
371: mflag = 1;
372: break;
373: case 'N':
374: nlistf = optarg;
375: break;
376: case 'n':
377: nflag = 1;
378: break;
379: case 'p':
380: if ((tp = name2protox(optarg)) == NULL) {
381: (void)fprintf(stderr,
1.42 jmc 382: "%s: %s: unknown protocol\n",
1.2 deraadt 383: __progname, optarg);
1.1 deraadt 384: exit(1);
385: }
386: pflag = 1;
1.27 brian 387: break;
388: case 'q':
389: qflag = 1;
1.1 deraadt 390: break;
391: case 'r':
392: rflag = 1;
393: break;
394: case 's':
395: ++sflag;
396: break;
397: case 't':
398: tflag = 1;
399: break;
400: case 'u':
401: af = AF_UNIX;
1.13 peter 402: break;
403: case 'v':
404: vflag = 1;
1.1 deraadt 405: break;
406: case 'w':
407: interval = atoi(optarg);
408: iflag = 1;
409: break;
410: case '?':
411: default:
412: usage();
413: }
414: argv += optind;
415: argc -= optind;
416:
1.33 deraadt 417: /*
418: * Discard setgid privileges if not the running kernel so that bad
419: * guys can't print interesting stuff from kernel memory.
420: */
421: if (nlistf != NULL || memf != NULL) {
422: setegid(getgid());
423: setgid(getgid());
424: }
425:
426: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
427: buf)) == NULL) {
428: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
429: exit(1);
430: }
431: setegid(getgid());
432: setgid(getgid());
433:
1.1 deraadt 434: #define BACKWARD_COMPATIBILITY
435: #ifdef BACKWARD_COMPATIBILITY
436: if (*argv) {
437: if (isdigit(**argv)) {
438: interval = atoi(*argv);
439: if (interval <= 0)
440: usage();
441: ++argv;
442: iflag = 1;
443: }
444: if (*argv) {
445: nlistf = *argv;
446: if (*++argv)
447: memf = *argv;
448: }
449: }
450: #endif
1.14 deraadt 451:
1.1 deraadt 452: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
453: if (nlistf)
1.2 deraadt 454: fprintf(stderr, "%s: %s: no namelist\n", __progname,
455: nlistf);
1.1 deraadt 456: else
1.2 deraadt 457: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 458: exit(1);
459: }
460: if (mflag) {
1.25 provos 461: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
462: nl[N_MCLPOOL].n_value);
1.1 deraadt 463: exit(0);
464: }
465: if (pflag) {
466: if (tp->pr_stats)
467: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
468: tp->pr_name);
469: else
470: printf("%s: no stats routine\n", tp->pr_name);
471: exit(0);
472: }
473: /*
474: * Keep file descriptors open to avoid overhead
475: * of open/close on each call to get* routines.
476: */
477: sethostent(1);
478: setnetent(1);
479: if (iflag) {
480: intpr(interval, nl[N_IFNET].n_value);
481: exit(0);
482: }
483: if (rflag) {
484: if (sflag)
485: rt_stats(nl[N_RTSTAT].n_value);
486: else
487: routepr(nl[N_RTREE].n_value);
488: exit(0);
489: }
490: if (gflag) {
1.19 itojun 491: if (sflag) {
492: if (af == AF_INET || af == AF_UNSPEC)
493: mrt_stats(nl[N_MRTPROTO].n_value,
494: nl[N_MRTSTAT].n_value);
495: #ifdef INET6
496: if (af == AF_INET6 || af == AF_UNSPEC)
497: mrt6_stats(nl[N_MRT6PROTO].n_value,
498: nl[N_MRT6STAT].n_value);
499: #endif
500: }
501: else {
502: if (af == AF_INET || af == AF_UNSPEC)
503: mroutepr(nl[N_MRTPROTO].n_value,
504: nl[N_MFCHASHTBL].n_value,
505: nl[N_MFCHASH].n_value,
506: nl[N_VIFTABLE].n_value);
507: #ifdef INET6
508: if (af == AF_INET6 || af == AF_UNSPEC)
509: mroute6pr(nl[N_MRT6PROTO].n_value,
510: nl[N_MF6CTABLE].n_value,
511: nl[N_MIF6TABLE].n_value);
512: #endif
513: }
1.1 deraadt 514: exit(0);
515: }
516: if (af == AF_INET || af == AF_UNSPEC) {
517: setprotoent(1);
518: setservent(1);
519: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 520: while ((p = getprotoent())) {
1.1 deraadt 521: for (tp = protox; tp->pr_name; tp++)
522: if (strcmp(tp->pr_name, p->p_name) == 0)
523: break;
524: if (tp->pr_name == 0 || tp->pr_wanted == 0)
525: continue;
526: printproto(tp, p->p_name);
527: }
528: endprotoent();
529: }
1.19 itojun 530: #ifdef INET6
531: if (af == AF_INET6 || af == AF_UNSPEC)
532: for (tp = ip6protox; tp->pr_name; tp++)
533: printproto(tp, tp->pr_name);
534: #endif
1.4 mickey 535: if (af == AF_IPX || af == AF_UNSPEC)
536: for (tp = ipxprotox; tp->pr_name; tp++)
537: printproto(tp, tp->pr_name);
1.1 deraadt 538: if (af == AF_NS || af == AF_UNSPEC)
539: for (tp = nsprotox; tp->pr_name; tp++)
540: printproto(tp, tp->pr_name);
541: if (af == AF_ISO || af == AF_UNSPEC)
542: for (tp = isoprotox; tp->pr_name; tp++)
543: printproto(tp, tp->pr_name);
544: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
545: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 546: if (af == AF_APPLETALK || af == AF_UNSPEC)
547: for (tp = atalkprotox; tp->pr_name; tp++)
548: printproto(tp, tp->pr_name);
1.1 deraadt 549: exit(0);
550: }
551:
552: /*
553: * Print out protocol statistics or control blocks (per sflag).
554: * If the interface was not specifically requested, and the symbol
555: * is not in the namelist, ignore this one.
556: */
557: static void
1.34 deraadt 558: printproto(struct protox *tp, char *name)
1.1 deraadt 559: {
1.38 deraadt 560: void (*pr)(u_long, char *);
1.35 dhartmei 561: u_char i;
1.1 deraadt 562:
563: if (sflag) {
564: pr = tp->pr_stats;
1.35 dhartmei 565: i = tp->pr_sindex;
1.1 deraadt 566: } else {
567: pr = tp->pr_cblocks;
1.35 dhartmei 568: i = tp->pr_index;
1.1 deraadt 569: }
1.35 dhartmei 570: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
571: (nl[i].n_value || af != AF_UNSPEC))
572: (*pr)(nl[i].n_value, name);
1.1 deraadt 573: }
574:
575: /*
576: * Read kernel memory, return 0 on success.
577: */
578: int
1.34 deraadt 579: kread(u_long addr, char *buf, int size)
1.1 deraadt 580: {
581:
582: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 583: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 584: kvm_geterr(kvmd));
585: return (-1);
586: }
587: return (0);
588: }
589:
590: char *
1.34 deraadt 591: plural(int n)
1.1 deraadt 592: {
593: return (n != 1 ? "s" : "");
594: }
595:
596: char *
1.34 deraadt 597: plurales(int n)
1.1 deraadt 598: {
599: return (n != 1 ? "es" : "");
600: }
601:
602: /*
603: * Find the protox for the given "well-known" name.
604: */
605: static struct protox *
1.34 deraadt 606: knownname(char *name)
1.1 deraadt 607: {
608: struct protox **tpp, *tp;
609:
610: for (tpp = protoprotox; *tpp; tpp++)
611: for (tp = *tpp; tp->pr_name; tp++)
612: if (strcmp(tp->pr_name, name) == 0)
613: return (tp);
614: return (NULL);
615: }
616:
617: /*
618: * Find the protox corresponding to name.
619: */
620: static struct protox *
1.34 deraadt 621: name2protox(char *name)
1.1 deraadt 622: {
623: struct protox *tp;
624: char **alias; /* alias from p->aliases */
625: struct protoent *p;
626:
627: /*
628: * Try to find the name in the list of "well-known" names. If that
629: * fails, check if name is an alias for an Internet protocol.
630: */
1.11 millert 631: if ((tp = knownname(name)))
1.1 deraadt 632: return (tp);
633:
634: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 635: while ((p = getprotoent())) {
1.1 deraadt 636: /* assert: name not same as p->name */
637: for (alias = p->p_aliases; *alias; alias++)
638: if (strcmp(name, *alias) == 0) {
639: endprotoent();
640: return (knownname(p->p_name));
641: }
642: }
643: endprotoent();
644: return (NULL);
645: }
646:
647: static void
1.34 deraadt 648: usage(void)
1.1 deraadt 649: {
650: (void)fprintf(stderr,
1.2 deraadt 651: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 652: (void)fprintf(stderr,
1.37 jmc 653: " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 654: (void)fprintf(stderr,
1.37 jmc 655: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 656: (void)fprintf(stderr,
1.2 deraadt 657: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.37 jmc 658: (void)fprintf(stderr,
1.41 jmc 659: " %s [-a] [-f address_family] [-i | -I interface]\n", __progname);
1.1 deraadt 660: exit(1);
661: }
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