make zero prefix or suffix tell patch not to produce backups at all
[dragonfly.git] / usr.bin / netstat / main.c
CommitLineData
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1/*
2 * Copyright (c) 1983, 1988, 1993
3 * Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
1de703da
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32 *
33 * @(#) Copyright (c) 1983, 1988, 1993 Regents of the University of California. All rights reserved.
34 * @(#)main.c 8.4 (Berkeley) 3/1/94
35 * $FreeBSD: src/usr.bin/netstat/main.c,v 1.34.2.12 2001/09/17 15:17:46 ru Exp $
6bd457ed 36 * $DragonFly: src/usr.bin/netstat/main.c,v 1.10 2005/08/04 17:31:23 drhodus Exp $
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37 */
38
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39#include <sys/param.h>
40#include <sys/file.h>
41#include <sys/protosw.h>
42#include <sys/socket.h>
43
44#include <netinet/in.h>
45
38a690d7 46#include <netgraph/socket/ng_socket.h>
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47
48#include <ctype.h>
49#include <err.h>
50#include <errno.h>
51#include <kvm.h>
52#include <limits.h>
53#include <netdb.h>
54#include <nlist.h>
55#include <paths.h>
56#include <stdio.h>
57#include <stdlib.h>
58#include <string.h>
59#include <unistd.h>
60#include "netstat.h"
61
62static struct nlist nl[] = {
63#define N_IFNET 0
64 { "_ifnet" },
65#define N_IMP 1
66 { "_imp_softc" },
67#define N_RTSTAT 2
68 { "_rtstat" },
69#define N_UNIXSW 3
70 { "_localsw" },
71#define N_IDP 4
72 { "_nspcb"},
73#define N_IDPSTAT 5
74 { "_idpstat"},
75#define N_SPPSTAT 6
76 { "_spp_istat"},
77#define N_NSERR 7
78 { "_ns_errstat"},
79#define N_CLNPSTAT 8
80 { "_clnp_stat"},
81#define IN_NOTUSED 9
82 { "_tp_inpcb" },
83#define ISO_TP 10
84 { "_tp_refinfo" },
85#define N_TPSTAT 11
86 { "_tp_stat" },
87#define N_ESISSTAT 12
88 { "_esis_stat"},
89#define N_NIMP 13
90 { "_nimp"},
91#define N_RTREE 14
92 { "_rt_tables"},
93#define N_CLTP 15
94 { "_cltb"},
95#define N_CLTPSTAT 16
96 { "_cltpstat"},
97#define N_NFILE 17
98 { "_nfile" },
99#define N_FILE 18
100 { "_file" },
101#define N_MRTSTAT 19
102 { "_mrtstat" },
103#define N_MFCTABLE 20
104 { "_mfctable" },
105#define N_VIFTABLE 21
106 { "_viftable" },
107#define N_IPX 22
108 { "_ipxpcb"},
109#define N_IPXSTAT 23
110 { "_ipxstat"},
111#define N_SPXSTAT 24
112 { "_spx_istat"},
113#define N_DDPSTAT 25
114 { "_ddpstat"},
115#define N_DDPCB 26
116 { "_ddpcb"},
117#define N_NGSOCKS 27
118 { "_ngsocklist"},
119#define N_IP6STAT 28
120 { "_ip6stat" },
121#define N_ICMP6STAT 29
122 { "_icmp6stat" },
123#define N_IPSECSTAT 30
124 { "_ipsecstat" },
125#define N_IPSEC6STAT 31
126 { "_ipsec6stat" },
127#define N_PIM6STAT 32
128 { "_pim6stat" },
129#define N_MRT6PROTO 33
130 { "_ip6_mrtproto" },
131#define N_MRT6STAT 34
132 { "_mrt6stat" },
133#define N_MF6CTABLE 35
134 { "_mf6ctable" },
135#define N_MIF6TABLE 36
136 { "_mif6table" },
137#define N_PFKEYSTAT 37
138 { "_pfkeystat" },
139#define N_MBSTAT 38
140 { "_mbstat" },
141#define N_MBTYPES 39
142 { "_mbtypes" },
143#define N_NMBCLUSTERS 40
144 { "_nmbclusters" },
145#define N_NMBUFS 41
146 { "_nmbufs" },
147#define N_RTTRASH 42
148 { "_rttrash" },
149 { "" },
150};
151
152struct protox {
153 u_char pr_index; /* index into nlist of cb head */
154 u_char pr_sindex; /* index into nlist of stat block */
155 u_char pr_wanted; /* 1 if wanted, 0 otherwise */
156 void (*pr_cblocks)(u_long, char *, int);
157 /* control blocks printing routine */
158 void (*pr_stats)(u_long, char *, int);
159 /* statistics printing routine */
160 void (*pr_istats)(char *); /* per/if statistics printing routine */
161 char *pr_name; /* well-known name */
162 int pr_usesysctl; /* true if we use sysctl, not kvm */
163} protox[] = {
164 { -1, -1, 1, protopr,
165 tcp_stats, NULL, "tcp", IPPROTO_TCP },
166 { -1, -1, 1, protopr,
167 udp_stats, NULL, "udp", IPPROTO_UDP },
168 { -1, -1, 1, protopr,
169 NULL, NULL, "divert",IPPROTO_DIVERT },
170 { -1, -1, 1, protopr,
171 ip_stats, NULL, "ip", IPPROTO_RAW },
172 { -1, -1, 1, protopr,
173 icmp_stats, NULL, "icmp", IPPROTO_ICMP },
174 { -1, -1, 1, protopr,
175 igmp_stats, NULL, "igmp", IPPROTO_IGMP },
176#ifdef IPSEC
177 { -1, N_IPSECSTAT, 1, 0,
178 ipsec_stats, NULL, "ipsec", 0},
179#endif
180 { -1, -1, 1, 0,
181 bdg_stats, NULL, "bdg", 1 /* bridging... */ },
182 { -1, -1, 0, 0,
183 0, NULL, 0 }
184};
185
186#ifdef INET6
187struct protox ip6protox[] = {
188 { -1, -1, 1, protopr,
189 tcp_stats, NULL, "tcp", IPPROTO_TCP },
190 { -1, -1, 1, protopr,
191 udp_stats, NULL, "udp", IPPROTO_UDP },
192 { -1, N_IP6STAT, 1, protopr,
193 ip6_stats, ip6_ifstats, "ip6", IPPROTO_RAW },
194 { -1, N_ICMP6STAT, 1, protopr,
195 icmp6_stats, icmp6_ifstats, "icmp6",IPPROTO_ICMPV6 },
196#ifdef IPSEC
197 { -1, N_IPSEC6STAT, 1, 0,
198 ipsec_stats, NULL, "ipsec6",0 },
199#endif
200#ifdef notyet
201 { -1, N_PIM6STAT, 1, 0,
202 pim6_stats, NULL, "pim6", 0 },
203#endif
204 { -1, -1, 1, 0,
205 rip6_stats, NULL, "rip6", 0 },
206 { -1, -1, 1, 0,
207 bdg_stats, NULL, "bdg", 1 /* bridging... */ },
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208 { -1, -1, 1, protopr,
209 pim_stats, NULL, "pim", IPPROTO_PIM },
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210 { -1, -1, 0, 0,
211 0, NULL, 0, 0 }
212};
213#endif /*INET6*/
214
215#ifdef IPSEC
216struct protox pfkeyprotox[] = {
217 { -1, N_PFKEYSTAT, 1, 0,
218 pfkey_stats, NULL, "pfkey", 0 },
219 { -1, -1, 0, 0,
220 0, NULL, 0, 0 }
221};
222#endif
223
224struct protox atalkprotox[] = {
225 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
226 ddp_stats, NULL, "ddp" },
227 { -1, -1, 0, 0,
228 0, NULL, 0 }
229};
230
231struct protox netgraphprotox[] = {
232 { N_NGSOCKS, -1, 1, netgraphprotopr,
233 NULL, NULL, "ctrl" },
234 { N_NGSOCKS, -1, 1, netgraphprotopr,
235 NULL, NULL, "data" },
236 { -1, NULL, 0, 0,
237 0, NULL, 0 }
238};
239
240struct protox ipxprotox[] = {
241 { N_IPX, N_IPXSTAT, 1, ipxprotopr,
242 ipx_stats, NULL, "ipx", 0 },
243 { N_IPX, N_SPXSTAT, 1, ipxprotopr,
244 spx_stats, NULL, "spx", 0 },
245 { -1, -1, 0, 0,
246 0, NULL, 0, 0 }
247};
248
249#ifdef NS
250struct protox nsprotox[] = {
251 { N_IDP, N_IDPSTAT, 1, nsprotopr,
252 idp_stats, NULL, "idp" },
253 { N_IDP, N_SPPSTAT, 1, nsprotopr,
254 spp_stats, NULL, "spp" },
255 { -1, N_NSERR, 1, 0,
256 nserr_stats, NULL, "ns_err" },
257 { -1, -1, 0, 0,
258 0, NULL, 0 }
259};
260#endif
261
262#ifdef ISO
263struct protox isoprotox[] = {
264 { ISO_TP, N_TPSTAT, 1, iso_protopr,
265 tp_stats, NULL, "tp" },
266 { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
267 cltp_stats, NULL, "cltp" },
268 { -1, N_CLNPSTAT, 1, 0,
269 clnp_stats, NULL, "clnp"},
270 { -1, N_ESISSTAT, 1, 0,
271 esis_stats, NULL, "esis"},
272 { -1, -1, 0, 0,
273 0, NULL, 0 }
274};
275#endif
276
277struct protox *protoprotox[] = {
278 protox,
279#ifdef INET6
280 ip6protox,
281#endif
282#ifdef IPSEC
283 pfkeyprotox,
284#endif
285 ipxprotox, atalkprotox,
286#ifdef NS
287 nsprotox,
288#endif
289#ifdef ISO
290 isoprotox,
291#endif
292 NULL };
293
294static void printproto (struct protox *, char *);
295static void usage (void);
296static struct protox *name2protox (char *);
297static struct protox *knownname (char *);
298
299static kvm_t *kvmd;
300static char *nlistf = NULL, *memf = NULL;
301
302int Aflag; /* show addresses of protocol control block */
303int aflag; /* show all sockets (including servers) */
304int bflag; /* show i/f total bytes in/out */
305int dflag; /* show i/f dropped packets */
306int gflag; /* show group (multicast) routing or stats */
307int iflag; /* show interfaces */
308int Lflag; /* show size of listen queues */
309int mflag; /* show memory stats */
ae94c427 310int Pflag; /* show more protocol info (go past 80 columns) */
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311int numeric_addr; /* show addresses numerically */
312int numeric_port; /* show ports numerically */
313static int pflag; /* show given protocol */
314int rflag; /* show routing tables (or routing stats) */
315int sflag; /* show protocol statistics */
316int tflag; /* show i/f watchdog timers */
caed4051 317int Bflag; /* show buffer limit instead of buffer use */
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318int Wflag; /* wide display */
319int zflag; /* zero stats */
320
321int interval; /* repeat interval for i/f stats */
322
323char *interface; /* desired i/f for stats, or NULL for all i/fs */
324int unit; /* unit number for above */
325
326int af; /* address family */
327
328int
1d1731fa 329main(int argc, char **argv)
984263bc 330{
6bd457ed 331 struct protox *tp = NULL; /* for printing cblocks & stats */
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332 int ch;
333
334 af = AF_UNSPEC;
335
ae94c427 336 while ((ch = getopt(argc, argv, "Aabdf:gI:iLlM:mN:nPp:rSsBtuWw:z")) != -1)
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337 switch(ch) {
338 case 'A':
339 Aflag = 1;
340 break;
341 case 'a':
342 aflag = 1;
343 break;
344 case 'b':
345 bflag = 1;
346 break;
347 case 'd':
348 dflag = 1;
349 break;
350 case 'f':
351#ifdef NS
352 if (strcmp(optarg, "ns") == 0)
353 af = AF_NS;
354 else
355#endif
356 if (strcmp(optarg, "ipx") == 0)
357 af = AF_IPX;
358 else if (strcmp(optarg, "inet") == 0)
359 af = AF_INET;
360#ifdef INET6
361 else if (strcmp(optarg, "inet6") == 0)
362 af = AF_INET6;
363#endif /*INET6*/
364#ifdef INET6
365 else if (strcmp(optarg, "pfkey") == 0)
366 af = PF_KEY;
367#endif /*INET6*/
368 else if (strcmp(optarg, "unix") == 0)
369 af = AF_UNIX;
370 else if (strcmp(optarg, "atalk") == 0)
371 af = AF_APPLETALK;
372 else if (strcmp(optarg, "ng") == 0
373 || strcmp(optarg, "netgraph") == 0)
374 af = AF_NETGRAPH;
375#ifdef ISO
376 else if (strcmp(optarg, "iso") == 0)
377 af = AF_ISO;
378#endif
379 else if (strcmp(optarg, "link") == 0)
380 af = AF_LINK;
381 else {
382 errx(1, "%s: unknown address family", optarg);
383 }
384 break;
385 case 'g':
386 gflag = 1;
387 break;
388 case 'I': {
389 char *cp;
390
391 iflag = 1;
392 for (cp = interface = optarg; isalpha(*cp); cp++)
393 continue;
394 unit = atoi(cp);
395 break;
396 }
397 case 'i':
398 iflag = 1;
399 break;
400 case 'L':
401 Lflag = 1;
402 break;
403 case 'M':
404 memf = optarg;
405 break;
406 case 'm':
407 mflag = 1;
408 break;
409 case 'N':
410 nlistf = optarg;
411 break;
412 case 'n':
413 numeric_addr = numeric_port = 1;
414 break;
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415 case 'P':
416 Pflag = 1;
417 break;
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418 case 'p':
419 if ((tp = name2protox(optarg)) == NULL) {
420 errx(1,
421 "%s: unknown or uninstrumented protocol",
422 optarg);
423 }
424 pflag = 1;
425 break;
426 case 'r':
427 rflag = 1;
428 break;
429 case 's':
430 ++sflag;
431 break;
432 case 'S':
433 numeric_addr = 1;
434 break;
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435 case 'B':
436 Bflag = 1;
437 break;
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438 case 't':
439 tflag = 1;
440 break;
441 case 'u':
442 af = AF_UNIX;
443 break;
444 case 'W':
445 case 'l':
446 Wflag = 1;
447 break;
448 case 'w':
449 interval = atoi(optarg);
450 iflag = 1;
451 break;
452 case 'z':
453 zflag = 1;
454 break;
455 case '?':
456 default:
457 usage();
458 }
459 argv += optind;
460 argc -= optind;
461
462#define BACKWARD_COMPATIBILITY
463#ifdef BACKWARD_COMPATIBILITY
464 if (*argv) {
465 if (isdigit(**argv)) {
466 interval = atoi(*argv);
467 if (interval <= 0)
468 usage();
469 ++argv;
470 iflag = 1;
471 }
472 if (*argv) {
473 nlistf = *argv;
474 if (*++argv)
475 memf = *argv;
476 }
477 }
478#endif
479
480 /*
481 * Discard setgid privileges if not the running kernel so that bad
482 * guys can't print interesting stuff from kernel memory.
483 */
484 if (nlistf != NULL || memf != NULL)
485 setgid(getgid());
486
487 if (mflag) {
488 if (memf != NULL) {
489 if (kread(0, 0, 0) == 0)
490 mbpr(nl[N_MBSTAT].n_value,
491 nl[N_MBTYPES].n_value,
492 nl[N_NMBCLUSTERS].n_value,
493 nl[N_NMBUFS].n_value);
494 } else
495 mbpr(0, 0, 0, 0);
496 exit(0);
497 }
498#if 0
499 /*
500 * Keep file descriptors open to avoid overhead
501 * of open/close on each call to get* routines.
502 */
503 sethostent(1);
504 setnetent(1);
505#else
506 /*
507 * This does not make sense any more with DNS being default over
508 * the files. Doing a setXXXXent(1) causes a tcp connection to be
509 * used for the queries, which is slower.
510 */
511#endif
512 if (iflag && !sflag) {
513 kread(0, 0, 0);
514 intpr(interval, nl[N_IFNET].n_value, NULL);
515 exit(0);
516 }
517 if (rflag) {
518 kread(0, 0, 0);
519 if (sflag)
72ce0f6d 520 rt_stats();
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521 else
522 routepr(nl[N_RTREE].n_value);
523 exit(0);
524 }
525 if (gflag) {
526 kread(0, 0, 0);
527 if (sflag) {
528 if (af == AF_INET || af == AF_UNSPEC)
529 mrt_stats(nl[N_MRTSTAT].n_value);
530#ifdef INET6
531 if (af == AF_INET6 || af == AF_UNSPEC)
532 mrt6_stats(nl[N_MRT6STAT].n_value);
533#endif
534 } else {
535 if (af == AF_INET || af == AF_UNSPEC)
536 mroutepr(nl[N_MFCTABLE].n_value,
537 nl[N_VIFTABLE].n_value);
538#ifdef INET6
539 if (af == AF_INET6 || af == AF_UNSPEC)
540 mroute6pr(nl[N_MF6CTABLE].n_value,
541 nl[N_MIF6TABLE].n_value);
542#endif
543 }
544 exit(0);
545 }
546
547 kread(0, 0, 0);
548 if (tp) {
549 printproto(tp, tp->pr_name);
550 exit(0);
551 }
552 if (af == AF_INET || af == AF_UNSPEC)
553 for (tp = protox; tp->pr_name; tp++)
554 printproto(tp, tp->pr_name);
555#ifdef INET6
556 if (af == AF_INET6 || af == AF_UNSPEC)
557 for (tp = ip6protox; tp->pr_name; tp++)
558 printproto(tp, tp->pr_name);
559#endif /*INET6*/
560#ifdef IPSEC
561 if (af == PF_KEY || af == AF_UNSPEC)
562 for (tp = pfkeyprotox; tp->pr_name; tp++)
563 printproto(tp, tp->pr_name);
564#endif /*IPSEC*/
565 if (af == AF_IPX || af == AF_UNSPEC) {
566 kread(0, 0, 0);
567 for (tp = ipxprotox; tp->pr_name; tp++)
568 printproto(tp, tp->pr_name);
569 }
570 if (af == AF_APPLETALK || af == AF_UNSPEC)
571 for (tp = atalkprotox; tp->pr_name; tp++)
572 printproto(tp, tp->pr_name);
573 if (af == AF_NETGRAPH || af == AF_UNSPEC)
574 for (tp = netgraphprotox; tp->pr_name; tp++)
575 printproto(tp, tp->pr_name);
576#ifdef NS
577 if (af == AF_NS || af == AF_UNSPEC)
578 for (tp = nsprotox; tp->pr_name; tp++)
579 printproto(tp, tp->pr_name);
580#endif
581#ifdef ISO
582 if (af == AF_ISO || af == AF_UNSPEC)
583 for (tp = isoprotox; tp->pr_name; tp++)
584 printproto(tp, tp->pr_name);
585#endif
586 if ((af == AF_UNIX || af == AF_UNSPEC) && !Lflag && !sflag)
587 unixpr();
588 exit(0);
589}
590
591/*
592 * Print out protocol statistics or control blocks (per sflag).
593 * If the interface was not specifically requested, and the symbol
594 * is not in the namelist, ignore this one.
595 */
596static void
6bd457ed 597printproto(struct protox *tp, char *name)
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598{
599 void (*pr)(u_long, char *, int);
600 u_long off;
601
602 if (sflag) {
603 if (iflag) {
604 if (tp->pr_istats)
605 intpr(interval, nl[N_IFNET].n_value,
606 tp->pr_istats);
607 else if (pflag)
608 printf("%s: no per-interface stats routine\n",
609 tp->pr_name);
610 return;
611 }
612 else {
613 pr = tp->pr_stats;
614 if (!pr) {
615 if (pflag)
616 printf("%s: no stats routine\n",
617 tp->pr_name);
618 return;
619 }
620 off = tp->pr_usesysctl ? tp->pr_usesysctl
621 : nl[tp->pr_sindex].n_value;
622 }
623 } else {
624 pr = tp->pr_cblocks;
625 if (!pr) {
626 if (pflag)
627 printf("%s: no PCB routine\n", tp->pr_name);
628 return;
629 }
630 off = tp->pr_usesysctl ? tp->pr_usesysctl
631 : nl[tp->pr_index].n_value;
632 }
633 if (pr != NULL && (off || af != AF_UNSPEC))
634 (*pr)(off, name, af);
635}
636
637/*
638 * Read kernel memory, return 0 on success.
639 */
640int
641kread(u_long addr, char *buf, int size)
642{
643 if (kvmd == 0) {
644 /*
645 * XXX.
646 */
647 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf);
648 if (kvmd != NULL) {
649 if (kvm_nlist(kvmd, nl) < 0) {
650 if(nlistf)
651 errx(1, "%s: kvm_nlist: %s", nlistf,
652 kvm_geterr(kvmd));
653 else
654 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
655 }
656
657 if (nl[0].n_type == 0) {
658 if(nlistf)
659 errx(1, "%s: no namelist", nlistf);
660 else
661 errx(1, "no namelist");
662 }
663 } else {
664 warnx("kvm not available");
665 return(-1);
666 }
667 }
668 if (!buf)
669 return (0);
670 if (kvm_read(kvmd, addr, buf, size) != size) {
671 warnx("%s", kvm_geterr(kvmd));
672 return (-1);
673 }
674 return (0);
675}
676
677char *
678plural(int n)
679{
680 return (n != 1 ? "s" : "");
681}
682
683char *
684plurales(int n)
685{
686 return (n != 1 ? "es" : "");
687}
688
689/*
690 * Find the protox for the given "well-known" name.
691 */
692static struct protox *
693knownname(char *name)
694{
695 struct protox **tpp, *tp;
696
697 for (tpp = protoprotox; *tpp; tpp++)
698 for (tp = *tpp; tp->pr_name; tp++)
699 if (strcmp(tp->pr_name, name) == 0)
700 return (tp);
701 return (NULL);
702}
703
704/*
705 * Find the protox corresponding to name.
706 */
707static struct protox *
708name2protox(char *name)
709{
710 struct protox *tp;
711 char **alias; /* alias from p->aliases */
712 struct protoent *p;
713
714 /*
715 * Try to find the name in the list of "well-known" names. If that
716 * fails, check if name is an alias for an Internet protocol.
717 */
718 if ((tp = knownname(name)) != NULL)
719 return (tp);
720
721 setprotoent(1); /* make protocol lookup cheaper */
722 while ((p = getprotoent()) != NULL) {
723 /* assert: name not same as p->name */
724 for (alias = p->p_aliases; *alias; alias++)
725 if (strcmp(name, *alias) == 0) {
726 endprotoent();
727 return (knownname(p->p_name));
728 }
729 }
730 endprotoent();
731 return (NULL);
732}
733
734static void
735usage(void)
736{
737 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
738"usage: netstat [-AaLnSW] [-f protocol_family | -p protocol]\n"
739" [-M core] [-N system]",
740" netstat -i | -I interface [-abdnt] [-f address_family]\n"
741" [-M core] [-N system]",
742" netstat -w wait [-I interface] [-d] [-M core] [-N system]",
743" netstat -s [-s] [-z] [-f protocol_family | -p protocol] [-M core]",
744" netstat -i | -I interface -s [-f protocol_family | -p protocol]\n"
745" [-M core] [-N system]",
746" netstat -m [-M core] [-N system]",
747" netstat -r [-AanW] [-f address_family] [-M core] [-N system]",
748" netstat -rs [-s] [-M core] [-N system]",
749" netstat -g [-W] [-f address_family] [-M core] [-N system]",
750" netstat -gs [-s] [-f address_family] [-M core] [-N system]");
751 exit(1);
752}