Annotation of src/usr.bin/netstat/main.c, Revision 1.60
1.60 ! jaredy 1: /* $OpenBSD: main.c,v 1.59 2005/06/15 10:53:23 markus 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
1.60 ! jaredy 43: static char *rcsid = "$OpenBSD: main.c,v 1.59 2005/06/15 10:53:23 markus 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 */
1.59 markus 163: void (*pr_dump)(u_long); /* pcb printing routine */
1.38 deraadt 164: char *pr_name; /* well-known name */
1.1 deraadt 165: } protox[] = {
166: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
1.59 markus 167: tcp_stats, tcp_dump, "tcp" },
1.1 deraadt 168: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
1.59 markus 169: udp_stats, 0, "udp" },
1.40 markus 170: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.59 markus 171: ip_stats, 0, "ip" },
1.1 deraadt 172: { -1, N_ICMPSTAT, 1, 0,
1.59 markus 173: icmp_stats, 0, "icmp" },
1.1 deraadt 174: { -1, N_IGMPSTAT, 1, 0,
1.59 markus 175: igmp_stats, 0, "igmp" },
1.8 angelos 176: { -1, N_AHSTAT, 1, 0,
1.59 markus 177: ah_stats, 0, "ah" },
1.8 angelos 178: { -1, N_ESPSTAT, 1, 0,
1.59 markus 179: esp_stats, 0, "esp" },
1.8 angelos 180: { -1, N_IP4STAT, 1, 0,
1.59 markus 181: ipip_stats, 0, "ipencap" },
1.18 angelos 182: { -1, N_ETHERIPSTAT, 1, 0,
1.59 markus 183: etherip_stats,0, "etherip" },
1.29 mickey 184: { -1, N_IPCOMPSTAT, 1, 0,
1.59 markus 185: ipcomp_stats, 0, "ipcomp" },
1.44 deraadt 186: { -1, N_CARPSTAT, 1, 0,
1.59 markus 187: carp_stats, 0, "carp" },
1.44 deraadt 188: { -1, N_PFSYNCSTAT, 1, 0,
1.59 markus 189: pfsync_stats, 0, "pfsync" },
1.50 mcbride 190: { -1, N_PIMSTAT, 1, 0,
1.59 markus 191: pim_stats, 0, "pim" },
1.1 deraadt 192: { -1, -1, 0, 0,
1.59 markus 193: 0, 0, 0 }
1.1 deraadt 194: };
195:
1.19 itojun 196: #ifdef INET6
197: struct protox ip6protox[] = {
1.22 itojun 198: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.59 markus 199: 0, tcp_dump, "tcp" },
1.22 itojun 200: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.59 markus 201: 0, 0, "udp" },
1.40 markus 202: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.59 markus 203: ip6_stats, 0, "ip6" },
1.19 itojun 204: { -1, N_ICMP6STAT, 1, 0,
1.59 markus 205: icmp6_stats, 0, "icmp6" },
1.19 itojun 206: { -1, N_PIM6STAT, 1, 0,
1.59 markus 207: pim6_stats, 0, "pim6" },
1.32 itojun 208: { -1, N_RIP6STAT, 1, 0,
1.59 markus 209: rip6_stats, 0, "rip6" },
1.19 itojun 210: { -1, -1, 0, 0,
1.59 markus 211: 0, 0, 0 }
1.19 itojun 212: };
213: #endif
214:
1.4 mickey 215: struct protox ipxprotox[] = {
216: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
1.59 markus 217: ipx_stats, 0, "ipx" },
1.4 mickey 218: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
1.59 markus 219: spx_stats, 0, "spx" },
1.4 mickey 220: { -1, -1, 0, 0,
1.59 markus 221: 0, 0, 0 }
1.4 mickey 222: };
223:
1.12 denny 224: struct protox atalkprotox[] = {
225: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
1.59 markus 226: ddp_stats, 0, "ddp" },
1.12 denny 227: { -1, -1, 0, 0,
1.59 markus 228: 0, 0, 0 }
1.12 denny 229: };
230:
1.19 itojun 231: #ifndef INET6
1.34 deraadt 232: struct protox *protoprotox[] = {
1.58 henning 233: protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 234: };
1.19 itojun 235: #else
1.34 deraadt 236: struct protox *protoprotox[] = {
1.58 henning 237: protox, ip6protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 238: };
1.19 itojun 239: #endif
1.1 deraadt 240:
1.30 millert 241: static void printproto(struct protox *, char *);
242: static void usage(void);
243: static struct protox *name2protox(char *);
244: static struct protox *knownname(char *);
1.1 deraadt 245:
246: kvm_t *kvmd;
247:
248: int
1.34 deraadt 249: main(int argc, char *argv[])
1.1 deraadt 250: {
251: extern char *optarg;
252: extern int optind;
1.28 mpech 253: struct protoent *p;
254: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 255: int ch;
1.59 markus 256: char *nlistf = NULL, *memf = NULL, *ep;
1.1 deraadt 257: char buf[_POSIX2_LINE_MAX];
1.59 markus 258: u_long pcbaddr = 0;
1.1 deraadt 259:
260: af = AF_UNSPEC;
261:
1.59 markus 262: while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:P:qrstuvW:w:")) != -1)
1.31 deraadt 263: switch (ch) {
1.1 deraadt 264: case 'A':
265: Aflag = 1;
266: break;
267: case 'a':
268: aflag = 1;
1.24 camield 269: break;
270: case 'b':
271: bflag = 1;
1.1 deraadt 272: break;
273: case 'd':
274: dflag = 1;
275: break;
276: case 'f':
1.4 mickey 277: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 278: af = AF_INET;
1.19 itojun 279: else if (strcmp(optarg, "inet6") == 0)
280: af = AF_INET6;
1.7 kstailey 281: else if (strcmp(optarg, "local") == 0)
282: af = AF_LOCAL;
1.1 deraadt 283: else if (strcmp(optarg, "unix") == 0)
284: af = AF_UNIX;
1.4 mickey 285: else if (strcmp(optarg, "ipx") == 0)
286: af = AF_IPX;
1.10 angelos 287: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 288: af = PF_KEY;
1.12 denny 289: else if (strcmp(optarg, "atalk") == 0)
290: af = AF_APPLETALK;
1.1 deraadt 291: else {
292: (void)fprintf(stderr,
293: "%s: %s: unknown address family\n",
1.2 deraadt 294: __progname, optarg);
1.1 deraadt 295: exit(1);
296: }
297: break;
298: case 'g':
299: gflag = 1;
300: break;
1.2 deraadt 301: case 'I':
1.1 deraadt 302: iflag = 1;
1.2 deraadt 303: interface = optarg;
1.1 deraadt 304: break;
305: case 'i':
306: iflag = 1;
307: break;
1.19 itojun 308: case 'l':
309: lflag = 1;
310: break;
1.1 deraadt 311: case 'M':
312: memf = optarg;
313: break;
314: case 'm':
315: mflag = 1;
316: break;
317: case 'N':
318: nlistf = optarg;
319: break;
320: case 'n':
321: nflag = 1;
322: break;
323: case 'p':
324: if ((tp = name2protox(optarg)) == NULL) {
325: (void)fprintf(stderr,
1.42 jmc 326: "%s: %s: unknown protocol\n",
1.2 deraadt 327: __progname, optarg);
1.1 deraadt 328: exit(1);
329: }
330: pflag = 1;
1.27 brian 331: break;
1.59 markus 332: case 'P':
333: errno = 0;
334: pcbaddr = strtoul(optarg, &ep, 16);
335: if (optarg[0] == '\0' || *ep != '\0' ||
336: errno == ERANGE) {
337: (void)fprintf(stderr,
338: "%s: %s: invalid PCB address\n",
339: __progname, optarg);
340: exit(1);
341: }
342: Pflag = 1;
343: break;
1.27 brian 344: case 'q':
345: qflag = 1;
1.1 deraadt 346: break;
347: case 'r':
348: rflag = 1;
1.46 cedric 349: break;
1.1 deraadt 350: case 's':
351: ++sflag;
352: break;
353: case 't':
354: tflag = 1;
355: break;
356: case 'u':
357: af = AF_UNIX;
1.13 peter 358: break;
359: case 'v':
360: vflag = 1;
1.1 deraadt 361: break;
1.56 reyk 362: case 'W':
363: Wflag = 1;
364: interface = optarg;
365: break;
1.1 deraadt 366: case 'w':
367: interval = atoi(optarg);
368: iflag = 1;
369: break;
370: case '?':
371: default:
372: usage();
373: }
374: argv += optind;
375: argc -= optind;
376:
1.33 deraadt 377: /*
1.56 reyk 378: * Show per-interface statistics which don't need access to
379: * kernel memory (they're using IOCTLs)
380: */
381: if (Wflag) {
382: if (interface == NULL)
383: usage();
384: net80211_ifstats(interface);
385: exit(0);
386: }
387:
388: /*
1.33 deraadt 389: * Discard setgid privileges if not the running kernel so that bad
390: * guys can't print interesting stuff from kernel memory.
1.59 markus 391: * Dumping PCB info is also restricted.
1.33 deraadt 392: */
1.59 markus 393: if (nlistf != NULL || memf != NULL || Pflag) {
1.33 deraadt 394: setegid(getgid());
395: setgid(getgid());
396: }
397:
398: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
399: buf)) == NULL) {
400: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
401: exit(1);
402: }
403: setegid(getgid());
404: setgid(getgid());
405:
1.1 deraadt 406: #define BACKWARD_COMPATIBILITY
407: #ifdef BACKWARD_COMPATIBILITY
408: if (*argv) {
409: if (isdigit(**argv)) {
410: interval = atoi(*argv);
411: if (interval <= 0)
412: usage();
413: ++argv;
414: iflag = 1;
415: }
416: if (*argv) {
417: nlistf = *argv;
418: if (*++argv)
419: memf = *argv;
420: }
421: }
422: #endif
1.14 deraadt 423:
1.1 deraadt 424: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
425: if (nlistf)
1.2 deraadt 426: fprintf(stderr, "%s: %s: no namelist\n", __progname,
427: nlistf);
1.1 deraadt 428: else
1.2 deraadt 429: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 430: exit(1);
431: }
432: if (mflag) {
1.25 provos 433: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
434: nl[N_MCLPOOL].n_value);
1.1 deraadt 435: exit(0);
436: }
437: if (pflag) {
1.45 markus 438: printproto(tp, tp->pr_name);
1.59 markus 439: exit(0);
440: }
441: if (Pflag) {
442: if (tp == NULL && (tp = name2protox("tcp")) == NULL) {
443: (void)fprintf(stderr,
444: "%s: %s: unknown protocol\n",
445: __progname, "tcp");
446: exit(1);
447: }
448: if (tp->pr_dump)
449: (tp->pr_dump)(pcbaddr);
1.1 deraadt 450: exit(0);
451: }
452: /*
453: * Keep file descriptors open to avoid overhead
454: * of open/close on each call to get* routines.
455: */
456: sethostent(1);
457: setnetent(1);
1.56 reyk 458:
1.1 deraadt 459: if (iflag) {
460: intpr(interval, nl[N_IFNET].n_value);
461: exit(0);
462: }
463: if (rflag) {
464: if (sflag)
465: rt_stats(nl[N_RTSTAT].n_value);
466: else
467: routepr(nl[N_RTREE].n_value);
468: exit(0);
469: }
470: if (gflag) {
1.19 itojun 471: if (sflag) {
472: if (af == AF_INET || af == AF_UNSPEC)
473: mrt_stats(nl[N_MRTPROTO].n_value,
474: nl[N_MRTSTAT].n_value);
475: #ifdef INET6
476: if (af == AF_INET6 || af == AF_UNSPEC)
477: mrt6_stats(nl[N_MRT6PROTO].n_value,
478: nl[N_MRT6STAT].n_value);
479: #endif
480: }
481: else {
482: if (af == AF_INET || af == AF_UNSPEC)
483: mroutepr(nl[N_MRTPROTO].n_value,
484: nl[N_MFCHASHTBL].n_value,
485: nl[N_MFCHASH].n_value,
486: nl[N_VIFTABLE].n_value);
487: #ifdef INET6
488: if (af == AF_INET6 || af == AF_UNSPEC)
489: mroute6pr(nl[N_MRT6PROTO].n_value,
490: nl[N_MF6CTABLE].n_value,
491: nl[N_MIF6TABLE].n_value);
492: #endif
493: }
1.1 deraadt 494: exit(0);
495: }
496: if (af == AF_INET || af == AF_UNSPEC) {
497: setprotoent(1);
498: setservent(1);
499: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 500: while ((p = getprotoent())) {
1.1 deraadt 501: for (tp = protox; tp->pr_name; tp++)
502: if (strcmp(tp->pr_name, p->p_name) == 0)
503: break;
504: if (tp->pr_name == 0 || tp->pr_wanted == 0)
505: continue;
506: printproto(tp, p->p_name);
507: }
508: endprotoent();
509: }
1.19 itojun 510: #ifdef INET6
511: if (af == AF_INET6 || af == AF_UNSPEC)
512: for (tp = ip6protox; tp->pr_name; tp++)
513: printproto(tp, tp->pr_name);
514: #endif
1.4 mickey 515: if (af == AF_IPX || af == AF_UNSPEC)
516: for (tp = ipxprotox; tp->pr_name; tp++)
1.1 deraadt 517: printproto(tp, tp->pr_name);
518: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
519: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 520: if (af == AF_APPLETALK || af == AF_UNSPEC)
521: for (tp = atalkprotox; tp->pr_name; tp++)
522: printproto(tp, tp->pr_name);
1.1 deraadt 523: exit(0);
524: }
525:
526: /*
527: * Print out protocol statistics or control blocks (per sflag).
528: * If the interface was not specifically requested, and the symbol
529: * is not in the namelist, ignore this one.
530: */
531: static void
1.34 deraadt 532: printproto(struct protox *tp, char *name)
1.1 deraadt 533: {
1.38 deraadt 534: void (*pr)(u_long, char *);
1.35 dhartmei 535: u_char i;
1.1 deraadt 536:
537: if (sflag) {
538: pr = tp->pr_stats;
1.35 dhartmei 539: i = tp->pr_sindex;
1.1 deraadt 540: } else {
541: pr = tp->pr_cblocks;
1.35 dhartmei 542: i = tp->pr_index;
1.1 deraadt 543: }
1.35 dhartmei 544: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
545: (nl[i].n_value || af != AF_UNSPEC))
546: (*pr)(nl[i].n_value, name);
1.1 deraadt 547: }
548:
549: /*
550: * Read kernel memory, return 0 on success.
551: */
552: int
1.53 jaredy 553: kread(u_long addr, void *buf, int size)
1.1 deraadt 554: {
555:
556: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 557: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 558: kvm_geterr(kvmd));
559: return (-1);
560: }
561: return (0);
562: }
563:
564: char *
1.34 deraadt 565: plural(int n)
1.1 deraadt 566: {
567: return (n != 1 ? "s" : "");
568: }
569:
570: char *
1.34 deraadt 571: plurales(int n)
1.1 deraadt 572: {
573: return (n != 1 ? "es" : "");
574: }
575:
576: /*
577: * Find the protox for the given "well-known" name.
578: */
579: static struct protox *
1.34 deraadt 580: knownname(char *name)
1.1 deraadt 581: {
582: struct protox **tpp, *tp;
583:
584: for (tpp = protoprotox; *tpp; tpp++)
585: for (tp = *tpp; tp->pr_name; tp++)
586: if (strcmp(tp->pr_name, name) == 0)
587: return (tp);
588: return (NULL);
589: }
590:
591: /*
592: * Find the protox corresponding to name.
593: */
594: static struct protox *
1.34 deraadt 595: name2protox(char *name)
1.1 deraadt 596: {
597: struct protox *tp;
598: char **alias; /* alias from p->aliases */
599: struct protoent *p;
600:
601: /*
602: * Try to find the name in the list of "well-known" names. If that
603: * fails, check if name is an alias for an Internet protocol.
604: */
1.11 millert 605: if ((tp = knownname(name)))
1.1 deraadt 606: return (tp);
607:
608: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 609: while ((p = getprotoent())) {
1.1 deraadt 610: /* assert: name not same as p->name */
611: for (alias = p->p_aliases; *alias; alias++)
612: if (strcmp(name, *alias) == 0) {
613: endprotoent();
614: return (knownname(p->p_name));
615: }
616: }
617: endprotoent();
618: return (NULL);
619: }
620:
621: static void
1.34 deraadt 622: usage(void)
1.1 deraadt 623: {
624: (void)fprintf(stderr,
1.60 ! jaredy 625: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n"
! 626: " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n"
! 627: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n"
! 628: " %s [-M core] [-N system] -P pcbaddr\n"
! 629: " %s [-s] [-M core] [-N system] [-p protocol]\n"
! 630: " %s [-a] [-f address_family] [-i | -I interface]\n"
! 631: " %s [-W interface]\n",
! 632: __progname, __progname, __progname, __progname,
! 633: __progname, __progname, __progname);
1.1 deraadt 634: exit(1);
635: }
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