Annotation of src/usr.bin/netstat/main.c, Revision 1.70
1.70 ! deraadt 1: /* $OpenBSD: main.c,v 1.69 2007/10/20 18:08:57 sobrado 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
1.70 ! deraadt 43: static char *rcsid = "$OpenBSD: main.c,v 1.69 2007/10/20 18:08:57 sobrado 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:
1.68 claudio 52: #include <net/route.h>
1.1 deraadt 53: #include <netinet/in.h>
54:
55: #include <ctype.h>
1.61 djm 56: #include <err.h>
1.1 deraadt 57: #include <errno.h>
58: #include <kvm.h>
59: #include <limits.h>
60: #include <netdb.h>
61: #include <nlist.h>
62: #include <paths.h>
63: #include <stdio.h>
64: #include <stdlib.h>
65: #include <string.h>
66: #include <unistd.h>
67: #include "netstat.h"
68:
69: struct nlist nl[] = {
1.70 ! deraadt 70: #define N_IPSTAT 0
1.1 deraadt 71: { "_ipstat" },
1.70 ! deraadt 72: #define N_TCBTABLE 1
1.1 deraadt 73: { "_tcbtable" },
1.70 ! deraadt 74: #define N_TCPSTAT 2
1.1 deraadt 75: { "_tcpstat" },
1.70 ! deraadt 76: #define N_UDBTABLE 3
1.1 deraadt 77: { "_udbtable" },
1.70 ! deraadt 78: #define N_UDPSTAT 4
1.1 deraadt 79: { "_udpstat" },
1.70 ! deraadt 80: #define N_IFNET 5
1.1 deraadt 81: { "_ifnet" },
1.70 ! deraadt 82: #define N_ICMPSTAT 6
1.1 deraadt 83: { "_icmpstat" },
1.70 ! deraadt 84: #define N_RTSTAT 7
1.1 deraadt 85: { "_rtstat" },
1.70 ! deraadt 86: #define N_UNIXSW 8
1.1 deraadt 87: { "_unixsw" },
1.70 ! deraadt 88: #define N_RTREE 9
1.1 deraadt 89: { "_rt_tables"},
1.70 ! deraadt 90: #define N_FILE 10
1.1 deraadt 91: { "_file" },
1.70 ! deraadt 92: #define N_IGMPSTAT 11
1.1 deraadt 93: { "_igmpstat" },
1.70 ! deraadt 94: #define N_MRTPROTO 12
1.1 deraadt 95: { "_ip_mrtproto" },
1.70 ! deraadt 96: #define N_MRTSTAT 13
1.1 deraadt 97: { "_mrtstat" },
1.70 ! deraadt 98: #define N_MFCHASHTBL 14
1.1 deraadt 99: { "_mfchashtbl" },
1.70 ! deraadt 100: #define N_MFCHASH 15
1.1 deraadt 101: { "_mfchash" },
1.70 ! deraadt 102: #define N_VIFTABLE 16
1.1 deraadt 103: { "_viftable" },
1.70 ! deraadt 104: #define N_AHSTAT 17
1.8 angelos 105: { "_ahstat"},
1.70 ! deraadt 106: #define N_ESPSTAT 18
1.8 angelos 107: { "_espstat"},
1.70 ! deraadt 108: #define N_IP4STAT 19
1.21 angelos 109: { "_ipipstat"},
1.70 ! deraadt 110: #define N_DDPSTAT 20
1.12 denny 111: { "_ddpstat"},
1.70 ! deraadt 112: #define N_DDPCB 21
1.12 denny 113: { "_ddpcb"},
1.70 ! deraadt 114: #define N_ETHERIPSTAT 22
1.18 angelos 115: { "_etheripstat"},
1.70 ! deraadt 116: #define N_IP6STAT 23
1.19 itojun 117: { "_ip6stat" },
1.70 ! deraadt 118: #define N_ICMP6STAT 24
1.19 itojun 119: { "_icmp6stat" },
1.70 ! deraadt 120: #define N_PIM6STAT 25
1.19 itojun 121: { "_pim6stat" },
1.70 ! deraadt 122: #define N_MRT6PROTO 26
1.19 itojun 123: { "_ip6_mrtproto" },
1.70 ! deraadt 124: #define N_MRT6STAT 27
1.19 itojun 125: { "_mrt6stat" },
1.70 ! deraadt 126: #define N_MF6CTABLE 28
1.19 itojun 127: { "_mf6ctable" },
1.70 ! deraadt 128: #define N_MIF6TABLE 29
1.19 itojun 129: { "_mif6table" },
1.70 ! deraadt 130: #define N_IPCOMPSTAT 30
1.26 jjbg 131: { "_ipcompstat" },
1.70 ! deraadt 132: #define N_RIP6STAT 31
1.32 itojun 133: { "_rip6stat" },
1.70 ! deraadt 134: #define N_CARPSTAT 32
1.39 mcbride 135: { "_carpstats" },
1.70 ! deraadt 136: #define N_RAWIPTABLE 33
1.40 markus 137: { "_rawcbtable" },
1.70 ! deraadt 138: #define N_RAWIP6TABLE 34
1.40 markus 139: { "_rawin6pcbtable" },
1.70 ! deraadt 140: #define N_PFSYNCSTAT 35
1.43 mcbride 141: { "_pfsyncstats" },
1.70 ! deraadt 142: #define N_PIMSTAT 36
1.50 mcbride 143: { "_pimstat" },
1.70 ! deraadt 144: #define N_AF2RTAFIDX 37
1.63 claudio 145: { "_af2rtafidx" },
1.70 ! deraadt 146: #define N_RTBLIDMAX 38
1.63 claudio 147: { "_rtbl_id_max" },
1.70 ! deraadt 148: #define N_RTMASK 39
1.63 claudio 149: { "_mask_rnhead" },
1.55 deraadt 150: { ""}
1.1 deraadt 151: };
152:
153: struct protox {
1.38 deraadt 154: u_char pr_index; /* index into nlist of cb head */
155: u_char pr_sindex; /* index into nlist of stat block */
156: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
157: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
158: void (*pr_stats)(u_long, char *); /* statistics printing routine */
1.59 markus 159: void (*pr_dump)(u_long); /* pcb printing routine */
1.38 deraadt 160: char *pr_name; /* well-known name */
1.1 deraadt 161: } protox[] = {
162: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
1.59 markus 163: tcp_stats, tcp_dump, "tcp" },
1.1 deraadt 164: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
1.59 markus 165: udp_stats, 0, "udp" },
1.40 markus 166: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.59 markus 167: ip_stats, 0, "ip" },
1.1 deraadt 168: { -1, N_ICMPSTAT, 1, 0,
1.59 markus 169: icmp_stats, 0, "icmp" },
1.1 deraadt 170: { -1, N_IGMPSTAT, 1, 0,
1.59 markus 171: igmp_stats, 0, "igmp" },
1.8 angelos 172: { -1, N_AHSTAT, 1, 0,
1.59 markus 173: ah_stats, 0, "ah" },
1.8 angelos 174: { -1, N_ESPSTAT, 1, 0,
1.59 markus 175: esp_stats, 0, "esp" },
1.8 angelos 176: { -1, N_IP4STAT, 1, 0,
1.59 markus 177: ipip_stats, 0, "ipencap" },
1.18 angelos 178: { -1, N_ETHERIPSTAT, 1, 0,
1.59 markus 179: etherip_stats,0, "etherip" },
1.29 mickey 180: { -1, N_IPCOMPSTAT, 1, 0,
1.59 markus 181: ipcomp_stats, 0, "ipcomp" },
1.44 deraadt 182: { -1, N_CARPSTAT, 1, 0,
1.59 markus 183: carp_stats, 0, "carp" },
1.44 deraadt 184: { -1, N_PFSYNCSTAT, 1, 0,
1.59 markus 185: pfsync_stats, 0, "pfsync" },
1.50 mcbride 186: { -1, N_PIMSTAT, 1, 0,
1.59 markus 187: pim_stats, 0, "pim" },
1.1 deraadt 188: { -1, -1, 0, 0,
1.59 markus 189: 0, 0, 0 }
1.1 deraadt 190: };
191:
1.19 itojun 192: #ifdef INET6
193: struct protox ip6protox[] = {
1.22 itojun 194: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.59 markus 195: 0, tcp_dump, "tcp" },
1.22 itojun 196: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.59 markus 197: 0, 0, "udp" },
1.40 markus 198: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.59 markus 199: ip6_stats, 0, "ip6" },
1.19 itojun 200: { -1, N_ICMP6STAT, 1, 0,
1.59 markus 201: icmp6_stats, 0, "icmp6" },
1.19 itojun 202: { -1, N_PIM6STAT, 1, 0,
1.59 markus 203: pim6_stats, 0, "pim6" },
1.32 itojun 204: { -1, N_RIP6STAT, 1, 0,
1.59 markus 205: rip6_stats, 0, "rip6" },
1.19 itojun 206: { -1, -1, 0, 0,
1.59 markus 207: 0, 0, 0 }
1.19 itojun 208: };
209: #endif
210:
1.12 denny 211: struct protox atalkprotox[] = {
212: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
1.59 markus 213: ddp_stats, 0, "ddp" },
1.12 denny 214: { -1, -1, 0, 0,
1.59 markus 215: 0, 0, 0 }
1.12 denny 216: };
217:
1.19 itojun 218: #ifndef INET6
1.34 deraadt 219: struct protox *protoprotox[] = {
1.66 henning 220: protox, atalkprotox, NULL
1.34 deraadt 221: };
1.19 itojun 222: #else
1.34 deraadt 223: struct protox *protoprotox[] = {
1.66 henning 224: protox, ip6protox, atalkprotox, NULL
1.34 deraadt 225: };
1.19 itojun 226: #endif
1.1 deraadt 227:
1.30 millert 228: static void printproto(struct protox *, char *);
229: static void usage(void);
230: static struct protox *name2protox(char *);
231: static struct protox *knownname(char *);
1.1 deraadt 232:
233: kvm_t *kvmd;
234:
235: int
1.34 deraadt 236: main(int argc, char *argv[])
1.1 deraadt 237: {
238: extern char *optarg;
239: extern int optind;
1.68 claudio 240: const char *errstr;
1.28 mpech 241: struct protoent *p;
242: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 243: int ch;
1.59 markus 244: char *nlistf = NULL, *memf = NULL, *ep;
1.1 deraadt 245: char buf[_POSIX2_LINE_MAX];
1.61 djm 246: gid_t gid;
1.59 markus 247: u_long pcbaddr = 0;
1.68 claudio 248: u_int tableid = 0;
1.1 deraadt 249:
250: af = AF_UNSPEC;
251:
1.68 claudio 252: while ((ch = getopt(argc, argv, "AabdFf:gI:ilM:mN:np:P:qrsT:tuvW:w:")) != -1)
1.31 deraadt 253: switch (ch) {
1.1 deraadt 254: case 'A':
255: Aflag = 1;
256: break;
257: case 'a':
258: aflag = 1;
1.24 camield 259: break;
260: case 'b':
261: bflag = 1;
1.1 deraadt 262: break;
263: case 'd':
264: dflag = 1;
1.64 pyr 265: break;
266: case 'F':
267: Fflag = 1;
1.1 deraadt 268: break;
269: case 'f':
1.4 mickey 270: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 271: af = AF_INET;
1.19 itojun 272: else if (strcmp(optarg, "inet6") == 0)
273: af = AF_INET6;
1.7 kstailey 274: else if (strcmp(optarg, "local") == 0)
275: af = AF_LOCAL;
1.1 deraadt 276: else if (strcmp(optarg, "unix") == 0)
277: af = AF_UNIX;
1.10 angelos 278: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 279: af = PF_KEY;
1.12 denny 280: else if (strcmp(optarg, "atalk") == 0)
281: af = AF_APPLETALK;
1.63 claudio 282: else if (strcmp(optarg, "mask") == 0)
283: af = 0xff;
1.1 deraadt 284: else {
285: (void)fprintf(stderr,
286: "%s: %s: unknown address family\n",
1.2 deraadt 287: __progname, optarg);
1.1 deraadt 288: exit(1);
289: }
290: break;
291: case 'g':
292: gflag = 1;
293: break;
1.2 deraadt 294: case 'I':
1.1 deraadt 295: iflag = 1;
1.2 deraadt 296: interface = optarg;
1.1 deraadt 297: break;
298: case 'i':
299: iflag = 1;
300: break;
1.19 itojun 301: case 'l':
302: lflag = 1;
303: break;
1.1 deraadt 304: case 'M':
305: memf = optarg;
306: break;
307: case 'm':
308: mflag = 1;
309: break;
310: case 'N':
311: nlistf = optarg;
312: break;
313: case 'n':
314: nflag = 1;
315: break;
316: case 'p':
317: if ((tp = name2protox(optarg)) == NULL) {
318: (void)fprintf(stderr,
1.42 jmc 319: "%s: %s: unknown protocol\n",
1.2 deraadt 320: __progname, optarg);
1.1 deraadt 321: exit(1);
322: }
323: pflag = 1;
1.27 brian 324: break;
1.59 markus 325: case 'P':
326: errno = 0;
327: pcbaddr = strtoul(optarg, &ep, 16);
328: if (optarg[0] == '\0' || *ep != '\0' ||
329: errno == ERANGE) {
330: (void)fprintf(stderr,
331: "%s: %s: invalid PCB address\n",
332: __progname, optarg);
333: exit(1);
334: }
335: Pflag = 1;
336: break;
1.27 brian 337: case 'q':
338: qflag = 1;
1.1 deraadt 339: break;
340: case 'r':
341: rflag = 1;
1.46 cedric 342: break;
1.1 deraadt 343: case 's':
344: ++sflag;
345: break;
1.68 claudio 346: case 'T':
347: tableid = strtonum(optarg, 0, RT_TABLEID_MAX, &errstr);
348: if (errstr)
349: errx(1, "invalid table id: %s", errstr);
350: break;
1.1 deraadt 351: case 't':
352: tflag = 1;
353: break;
354: case 'u':
355: af = AF_UNIX;
1.13 peter 356: break;
357: case 'v':
358: vflag = 1;
1.1 deraadt 359: break;
1.56 reyk 360: case 'W':
361: Wflag = 1;
362: interface = optarg;
363: break;
1.1 deraadt 364: case 'w':
365: interval = atoi(optarg);
366: iflag = 1;
367: break;
368: case '?':
369: default:
370: usage();
371: }
372: argv += optind;
373: argc -= optind;
374:
1.33 deraadt 375: /*
1.56 reyk 376: * Show per-interface statistics which don't need access to
377: * kernel memory (they're using IOCTLs)
378: */
379: if (Wflag) {
380: if (interface == NULL)
381: usage();
382: net80211_ifstats(interface);
383: exit(0);
384: }
385:
386: /*
1.33 deraadt 387: * Discard setgid privileges if not the running kernel so that bad
388: * guys can't print interesting stuff from kernel memory.
1.59 markus 389: * Dumping PCB info is also restricted.
1.33 deraadt 390: */
1.61 djm 391: gid = getgid();
392: if (nlistf != NULL || memf != NULL || Pflag)
393: if (setresgid(gid, gid, gid) == -1)
394: err(1, "setresgid");
1.62 claudio 395: if (nlistf == NULL && memf == NULL && rflag && !Aflag) {
396: /* printing the routing table no longer needs kvm */
397: if (setresgid(gid, gid, gid) == -1)
398: err(1, "setresgid");
399: if (sflag)
400: rt_stats(1, 0);
401: else
1.68 claudio 402: p_rttables(af, tableid);
1.62 claudio 403: exit(0);
404: }
1.33 deraadt 405: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
406: buf)) == NULL) {
407: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
408: exit(1);
409: }
1.61 djm 410:
411: if (nlistf == NULL && memf == NULL && !Pflag)
412: if (setresgid(gid, gid, gid) == -1)
413: err(1, "setresgid");
1.33 deraadt 414:
1.1 deraadt 415: #define BACKWARD_COMPATIBILITY
416: #ifdef BACKWARD_COMPATIBILITY
417: if (*argv) {
418: if (isdigit(**argv)) {
419: interval = atoi(*argv);
420: if (interval <= 0)
421: usage();
422: ++argv;
423: iflag = 1;
424: }
425: if (*argv) {
426: nlistf = *argv;
427: if (*++argv)
428: memf = *argv;
429: }
430: }
431: #endif
1.14 deraadt 432:
1.1 deraadt 433: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
434: if (nlistf)
1.2 deraadt 435: fprintf(stderr, "%s: %s: no namelist\n", __progname,
436: nlistf);
1.1 deraadt 437: else
1.2 deraadt 438: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 439: exit(1);
440: }
441: if (mflag) {
1.70 ! deraadt 442: mbpr();
1.1 deraadt 443: exit(0);
444: }
445: if (pflag) {
1.45 markus 446: printproto(tp, tp->pr_name);
1.59 markus 447: exit(0);
448: }
449: if (Pflag) {
450: if (tp == NULL && (tp = name2protox("tcp")) == NULL) {
451: (void)fprintf(stderr,
452: "%s: %s: unknown protocol\n",
453: __progname, "tcp");
454: exit(1);
455: }
456: if (tp->pr_dump)
457: (tp->pr_dump)(pcbaddr);
1.1 deraadt 458: exit(0);
459: }
460: /*
461: * Keep file descriptors open to avoid overhead
462: * of open/close on each call to get* routines.
463: */
464: sethostent(1);
465: setnetent(1);
1.56 reyk 466:
1.1 deraadt 467: if (iflag) {
468: intpr(interval, nl[N_IFNET].n_value);
469: exit(0);
470: }
471: if (rflag) {
472: if (sflag)
1.62 claudio 473: rt_stats(0, nl[N_RTSTAT].n_value);
1.1 deraadt 474: else
1.63 claudio 475: routepr(nl[N_RTREE].n_value, nl[N_RTMASK].n_value,
476: nl[N_AF2RTAFIDX].n_value, nl[N_RTBLIDMAX].n_value);
1.1 deraadt 477: exit(0);
478: }
479: if (gflag) {
1.19 itojun 480: if (sflag) {
481: if (af == AF_INET || af == AF_UNSPEC)
482: mrt_stats(nl[N_MRTPROTO].n_value,
483: nl[N_MRTSTAT].n_value);
484: #ifdef INET6
485: if (af == AF_INET6 || af == AF_UNSPEC)
486: mrt6_stats(nl[N_MRT6PROTO].n_value,
487: nl[N_MRT6STAT].n_value);
488: #endif
1.70 ! deraadt 489: } else {
1.19 itojun 490: if (af == AF_INET || af == AF_UNSPEC)
491: mroutepr(nl[N_MRTPROTO].n_value,
492: nl[N_MFCHASHTBL].n_value,
493: nl[N_MFCHASH].n_value,
494: nl[N_VIFTABLE].n_value);
495: #ifdef INET6
496: if (af == AF_INET6 || af == AF_UNSPEC)
497: mroute6pr(nl[N_MRT6PROTO].n_value,
498: nl[N_MF6CTABLE].n_value,
499: nl[N_MIF6TABLE].n_value);
500: #endif
501: }
1.1 deraadt 502: exit(0);
503: }
504: if (af == AF_INET || af == AF_UNSPEC) {
505: setprotoent(1);
506: setservent(1);
507: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 508: while ((p = getprotoent())) {
1.1 deraadt 509: for (tp = protox; tp->pr_name; tp++)
510: if (strcmp(tp->pr_name, p->p_name) == 0)
511: break;
512: if (tp->pr_name == 0 || tp->pr_wanted == 0)
513: continue;
514: printproto(tp, p->p_name);
515: }
516: endprotoent();
517: }
1.19 itojun 518: #ifdef INET6
519: if (af == AF_INET6 || af == AF_UNSPEC)
520: for (tp = ip6protox; tp->pr_name; tp++)
521: printproto(tp, tp->pr_name);
522: #endif
1.1 deraadt 523: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
524: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 525: if (af == AF_APPLETALK || af == AF_UNSPEC)
526: for (tp = atalkprotox; tp->pr_name; tp++)
527: printproto(tp, tp->pr_name);
1.1 deraadt 528: exit(0);
529: }
530:
531: /*
532: * Print out protocol statistics or control blocks (per sflag).
533: * If the interface was not specifically requested, and the symbol
534: * is not in the namelist, ignore this one.
535: */
536: static void
1.34 deraadt 537: printproto(struct protox *tp, char *name)
1.1 deraadt 538: {
1.38 deraadt 539: void (*pr)(u_long, char *);
1.35 dhartmei 540: u_char i;
1.1 deraadt 541:
542: if (sflag) {
543: pr = tp->pr_stats;
1.35 dhartmei 544: i = tp->pr_sindex;
1.1 deraadt 545: } else {
546: pr = tp->pr_cblocks;
1.35 dhartmei 547: i = tp->pr_index;
1.1 deraadt 548: }
1.35 dhartmei 549: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
550: (nl[i].n_value || af != AF_UNSPEC))
551: (*pr)(nl[i].n_value, name);
1.1 deraadt 552: }
553:
554: /*
555: * Read kernel memory, return 0 on success.
556: */
557: int
1.53 jaredy 558: kread(u_long addr, void *buf, int size)
1.1 deraadt 559: {
560:
561: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 562: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 563: kvm_geterr(kvmd));
564: return (-1);
565: }
566: return (0);
567: }
568:
569: char *
1.34 deraadt 570: plural(int n)
1.1 deraadt 571: {
572: return (n != 1 ? "s" : "");
573: }
574:
575: char *
1.34 deraadt 576: plurales(int n)
1.1 deraadt 577: {
578: return (n != 1 ? "es" : "");
579: }
580:
581: /*
582: * Find the protox for the given "well-known" name.
583: */
584: static struct protox *
1.34 deraadt 585: knownname(char *name)
1.1 deraadt 586: {
587: struct protox **tpp, *tp;
588:
589: for (tpp = protoprotox; *tpp; tpp++)
590: for (tp = *tpp; tp->pr_name; tp++)
591: if (strcmp(tp->pr_name, name) == 0)
592: return (tp);
593: return (NULL);
594: }
595:
596: /*
597: * Find the protox corresponding to name.
598: */
599: static struct protox *
1.34 deraadt 600: name2protox(char *name)
1.1 deraadt 601: {
602: struct protox *tp;
603: char **alias; /* alias from p->aliases */
604: struct protoent *p;
605:
606: /*
607: * Try to find the name in the list of "well-known" names. If that
608: * fails, check if name is an alias for an Internet protocol.
609: */
1.11 millert 610: if ((tp = knownname(name)))
1.1 deraadt 611: return (tp);
612:
613: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 614: while ((p = getprotoent())) {
1.1 deraadt 615: /* assert: name not same as p->name */
616: for (alias = p->p_aliases; *alias; alias++)
617: if (strcmp(name, *alias) == 0) {
618: endprotoent();
619: return (knownname(p->p_name));
620: }
621: }
622: endprotoent();
623: return (NULL);
624: }
625:
626: static void
1.34 deraadt 627: usage(void)
1.1 deraadt 628: {
629: (void)fprintf(stderr,
1.60 jaredy 630: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n"
1.69 sobrado 631: " %s [-bdFgilmnqrstu] [-f address_family] [-M core] [-N system]\n"
632: " [-T tableid]\n"
1.60 jaredy 633: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n"
634: " %s [-M core] [-N system] -P pcbaddr\n"
635: " %s [-s] [-M core] [-N system] [-p protocol]\n"
636: " %s [-a] [-f address_family] [-i | -I interface]\n"
637: " %s [-W interface]\n",
638: __progname, __progname, __progname, __progname,
639: __progname, __progname, __progname);
1.1 deraadt 640: exit(1);
641: }
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