Annotation of src/usr.bin/netstat/main.c, Revision 1.65
1.65 ! jmc 1: /* $OpenBSD: main.c,v 1.64 2007/03/23 10:59:38 pyr 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
1.65 ! jmc 43: static char *rcsid = "$OpenBSD: main.c,v 1.64 2007/03/23 10:59:38 pyr 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>
1.61 djm 55: #include <err.h>
1.1 deraadt 56: #include <errno.h>
57: #include <kvm.h>
58: #include <limits.h>
59: #include <netdb.h>
60: #include <nlist.h>
61: #include <paths.h>
62: #include <stdio.h>
63: #include <stdlib.h>
64: #include <string.h>
65: #include <unistd.h>
66: #include "netstat.h"
67:
68: struct nlist nl[] = {
1.55 deraadt 69: #define N_MBSTAT 0
1.1 deraadt 70: { "_mbstat" },
1.55 deraadt 71: #define N_IPSTAT 1
1.1 deraadt 72: { "_ipstat" },
1.55 deraadt 73: #define N_TCBTABLE 2
1.1 deraadt 74: { "_tcbtable" },
1.55 deraadt 75: #define N_TCPSTAT 3
1.1 deraadt 76: { "_tcpstat" },
1.55 deraadt 77: #define N_UDBTABLE 4
1.1 deraadt 78: { "_udbtable" },
1.55 deraadt 79: #define N_UDPSTAT 5
1.1 deraadt 80: { "_udpstat" },
1.55 deraadt 81: #define N_IFNET 6
1.1 deraadt 82: { "_ifnet" },
1.55 deraadt 83: #define N_ICMPSTAT 7
1.1 deraadt 84: { "_icmpstat" },
1.55 deraadt 85: #define N_RTSTAT 8
1.1 deraadt 86: { "_rtstat" },
1.55 deraadt 87: #define N_UNIXSW 9
1.1 deraadt 88: { "_unixsw" },
1.58 henning 89: #define N_RTREE 10
1.1 deraadt 90: { "_rt_tables"},
1.58 henning 91: #define N_FILE 11
1.1 deraadt 92: { "_file" },
1.58 henning 93: #define N_IGMPSTAT 12
1.1 deraadt 94: { "_igmpstat" },
1.58 henning 95: #define N_MRTPROTO 13
1.1 deraadt 96: { "_ip_mrtproto" },
1.58 henning 97: #define N_MRTSTAT 14
1.1 deraadt 98: { "_mrtstat" },
1.58 henning 99: #define N_MFCHASHTBL 15
1.1 deraadt 100: { "_mfchashtbl" },
1.58 henning 101: #define N_MFCHASH 16
1.1 deraadt 102: { "_mfchash" },
1.58 henning 103: #define N_VIFTABLE 17
1.1 deraadt 104: { "_viftable" },
1.58 henning 105: #define N_IPX 18
1.4 mickey 106: { "_ipxcbtable"},
1.58 henning 107: #define N_IPXSTAT 19
1.4 mickey 108: { "_ipxstat"},
1.58 henning 109: #define N_SPXSTAT 20
1.4 mickey 110: { "_spx_istat"},
1.58 henning 111: #define N_AHSTAT 21
1.8 angelos 112: { "_ahstat"},
1.58 henning 113: #define N_ESPSTAT 22
1.8 angelos 114: { "_espstat"},
1.58 henning 115: #define N_IP4STAT 23
1.21 angelos 116: { "_ipipstat"},
1.58 henning 117: #define N_DDPSTAT 24
1.12 denny 118: { "_ddpstat"},
1.58 henning 119: #define N_DDPCB 25
1.12 denny 120: { "_ddpcb"},
1.58 henning 121: #define N_ETHERIPSTAT 26
1.18 angelos 122: { "_etheripstat"},
1.58 henning 123: #define N_IP6STAT 27
1.19 itojun 124: { "_ip6stat" },
1.58 henning 125: #define N_ICMP6STAT 28
1.19 itojun 126: { "_icmp6stat" },
1.58 henning 127: #define N_PIM6STAT 29
1.19 itojun 128: { "_pim6stat" },
1.58 henning 129: #define N_MRT6PROTO 30
1.19 itojun 130: { "_ip6_mrtproto" },
1.58 henning 131: #define N_MRT6STAT 31
1.19 itojun 132: { "_mrt6stat" },
1.58 henning 133: #define N_MF6CTABLE 32
1.19 itojun 134: { "_mf6ctable" },
1.58 henning 135: #define N_MIF6TABLE 33
1.19 itojun 136: { "_mif6table" },
1.58 henning 137: #define N_MBPOOL 34
1.25 provos 138: { "_mbpool" },
1.58 henning 139: #define N_MCLPOOL 35
1.25 provos 140: { "_mclpool" },
1.58 henning 141: #define N_IPCOMPSTAT 36
1.26 jjbg 142: { "_ipcompstat" },
1.58 henning 143: #define N_RIP6STAT 37
1.32 itojun 144: { "_rip6stat" },
1.58 henning 145: #define N_CARPSTAT 38
1.39 mcbride 146: { "_carpstats" },
1.58 henning 147: #define N_RAWIPTABLE 39
1.40 markus 148: { "_rawcbtable" },
1.58 henning 149: #define N_RAWIP6TABLE 40
1.40 markus 150: { "_rawin6pcbtable" },
1.58 henning 151: #define N_PFSYNCSTAT 41
1.43 mcbride 152: { "_pfsyncstats" },
1.58 henning 153: #define N_PIMSTAT 42
1.50 mcbride 154: { "_pimstat" },
1.63 claudio 155: #define N_AF2RTAFIDX 43
156: { "_af2rtafidx" },
157: #define N_RTBLIDMAX 44
158: { "_rtbl_id_max" },
159: #define N_RTMASK 45
160: { "_mask_rnhead" },
1.55 deraadt 161: { ""}
1.1 deraadt 162: };
163:
164: struct protox {
1.38 deraadt 165: u_char pr_index; /* index into nlist of cb head */
166: u_char pr_sindex; /* index into nlist of stat block */
167: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
168: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
169: void (*pr_stats)(u_long, char *); /* statistics printing routine */
1.59 markus 170: void (*pr_dump)(u_long); /* pcb printing routine */
1.38 deraadt 171: char *pr_name; /* well-known name */
1.1 deraadt 172: } protox[] = {
173: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
1.59 markus 174: tcp_stats, tcp_dump, "tcp" },
1.1 deraadt 175: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
1.59 markus 176: udp_stats, 0, "udp" },
1.40 markus 177: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.59 markus 178: ip_stats, 0, "ip" },
1.1 deraadt 179: { -1, N_ICMPSTAT, 1, 0,
1.59 markus 180: icmp_stats, 0, "icmp" },
1.1 deraadt 181: { -1, N_IGMPSTAT, 1, 0,
1.59 markus 182: igmp_stats, 0, "igmp" },
1.8 angelos 183: { -1, N_AHSTAT, 1, 0,
1.59 markus 184: ah_stats, 0, "ah" },
1.8 angelos 185: { -1, N_ESPSTAT, 1, 0,
1.59 markus 186: esp_stats, 0, "esp" },
1.8 angelos 187: { -1, N_IP4STAT, 1, 0,
1.59 markus 188: ipip_stats, 0, "ipencap" },
1.18 angelos 189: { -1, N_ETHERIPSTAT, 1, 0,
1.59 markus 190: etherip_stats,0, "etherip" },
1.29 mickey 191: { -1, N_IPCOMPSTAT, 1, 0,
1.59 markus 192: ipcomp_stats, 0, "ipcomp" },
1.44 deraadt 193: { -1, N_CARPSTAT, 1, 0,
1.59 markus 194: carp_stats, 0, "carp" },
1.44 deraadt 195: { -1, N_PFSYNCSTAT, 1, 0,
1.59 markus 196: pfsync_stats, 0, "pfsync" },
1.50 mcbride 197: { -1, N_PIMSTAT, 1, 0,
1.59 markus 198: pim_stats, 0, "pim" },
1.1 deraadt 199: { -1, -1, 0, 0,
1.59 markus 200: 0, 0, 0 }
1.1 deraadt 201: };
202:
1.19 itojun 203: #ifdef INET6
204: struct protox ip6protox[] = {
1.22 itojun 205: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.59 markus 206: 0, tcp_dump, "tcp" },
1.22 itojun 207: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.59 markus 208: 0, 0, "udp" },
1.40 markus 209: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.59 markus 210: ip6_stats, 0, "ip6" },
1.19 itojun 211: { -1, N_ICMP6STAT, 1, 0,
1.59 markus 212: icmp6_stats, 0, "icmp6" },
1.19 itojun 213: { -1, N_PIM6STAT, 1, 0,
1.59 markus 214: pim6_stats, 0, "pim6" },
1.32 itojun 215: { -1, N_RIP6STAT, 1, 0,
1.59 markus 216: rip6_stats, 0, "rip6" },
1.19 itojun 217: { -1, -1, 0, 0,
1.59 markus 218: 0, 0, 0 }
1.19 itojun 219: };
220: #endif
221:
1.4 mickey 222: struct protox ipxprotox[] = {
223: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
1.59 markus 224: ipx_stats, 0, "ipx" },
1.4 mickey 225: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
1.59 markus 226: spx_stats, 0, "spx" },
1.4 mickey 227: { -1, -1, 0, 0,
1.59 markus 228: 0, 0, 0 }
1.4 mickey 229: };
230:
1.12 denny 231: struct protox atalkprotox[] = {
232: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
1.59 markus 233: ddp_stats, 0, "ddp" },
1.12 denny 234: { -1, -1, 0, 0,
1.59 markus 235: 0, 0, 0 }
1.12 denny 236: };
237:
1.19 itojun 238: #ifndef INET6
1.34 deraadt 239: struct protox *protoprotox[] = {
1.58 henning 240: protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 241: };
1.19 itojun 242: #else
1.34 deraadt 243: struct protox *protoprotox[] = {
1.58 henning 244: protox, ip6protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 245: };
1.19 itojun 246: #endif
1.1 deraadt 247:
1.30 millert 248: static void printproto(struct protox *, char *);
249: static void usage(void);
250: static struct protox *name2protox(char *);
251: static struct protox *knownname(char *);
1.1 deraadt 252:
253: kvm_t *kvmd;
254:
255: int
1.34 deraadt 256: main(int argc, char *argv[])
1.1 deraadt 257: {
258: extern char *optarg;
259: extern int optind;
1.28 mpech 260: struct protoent *p;
261: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 262: int ch;
1.59 markus 263: char *nlistf = NULL, *memf = NULL, *ep;
1.1 deraadt 264: char buf[_POSIX2_LINE_MAX];
1.61 djm 265: gid_t gid;
1.59 markus 266: u_long pcbaddr = 0;
1.1 deraadt 267:
268: af = AF_UNSPEC;
269:
1.64 pyr 270: while ((ch = getopt(argc, argv, "AabdFf:gI:ilM:mN:np:P:qrstuvW:w:")) != -1)
1.31 deraadt 271: switch (ch) {
1.1 deraadt 272: case 'A':
273: Aflag = 1;
274: break;
275: case 'a':
276: aflag = 1;
1.24 camield 277: break;
278: case 'b':
279: bflag = 1;
1.1 deraadt 280: break;
281: case 'd':
282: dflag = 1;
1.64 pyr 283: break;
284: case 'F':
285: Fflag = 1;
1.1 deraadt 286: break;
287: case 'f':
1.4 mickey 288: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 289: af = AF_INET;
1.19 itojun 290: else if (strcmp(optarg, "inet6") == 0)
291: af = AF_INET6;
1.7 kstailey 292: else if (strcmp(optarg, "local") == 0)
293: af = AF_LOCAL;
1.1 deraadt 294: else if (strcmp(optarg, "unix") == 0)
295: af = AF_UNIX;
1.4 mickey 296: else if (strcmp(optarg, "ipx") == 0)
297: af = AF_IPX;
1.10 angelos 298: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 299: af = PF_KEY;
1.12 denny 300: else if (strcmp(optarg, "atalk") == 0)
301: af = AF_APPLETALK;
1.63 claudio 302: else if (strcmp(optarg, "mask") == 0)
303: af = 0xff;
1.1 deraadt 304: else {
305: (void)fprintf(stderr,
306: "%s: %s: unknown address family\n",
1.2 deraadt 307: __progname, optarg);
1.1 deraadt 308: exit(1);
309: }
310: break;
311: case 'g':
312: gflag = 1;
313: break;
1.2 deraadt 314: case 'I':
1.1 deraadt 315: iflag = 1;
1.2 deraadt 316: interface = optarg;
1.1 deraadt 317: break;
318: case 'i':
319: iflag = 1;
320: break;
1.19 itojun 321: case 'l':
322: lflag = 1;
323: break;
1.1 deraadt 324: case 'M':
325: memf = optarg;
326: break;
327: case 'm':
328: mflag = 1;
329: break;
330: case 'N':
331: nlistf = optarg;
332: break;
333: case 'n':
334: nflag = 1;
335: break;
336: case 'p':
337: if ((tp = name2protox(optarg)) == NULL) {
338: (void)fprintf(stderr,
1.42 jmc 339: "%s: %s: unknown protocol\n",
1.2 deraadt 340: __progname, optarg);
1.1 deraadt 341: exit(1);
342: }
343: pflag = 1;
1.27 brian 344: break;
1.59 markus 345: case 'P':
346: errno = 0;
347: pcbaddr = strtoul(optarg, &ep, 16);
348: if (optarg[0] == '\0' || *ep != '\0' ||
349: errno == ERANGE) {
350: (void)fprintf(stderr,
351: "%s: %s: invalid PCB address\n",
352: __progname, optarg);
353: exit(1);
354: }
355: Pflag = 1;
356: break;
1.27 brian 357: case 'q':
358: qflag = 1;
1.1 deraadt 359: break;
360: case 'r':
361: rflag = 1;
1.46 cedric 362: break;
1.1 deraadt 363: case 's':
364: ++sflag;
365: break;
366: case 't':
367: tflag = 1;
368: break;
369: case 'u':
370: af = AF_UNIX;
1.13 peter 371: break;
372: case 'v':
373: vflag = 1;
1.1 deraadt 374: break;
1.56 reyk 375: case 'W':
376: Wflag = 1;
377: interface = optarg;
378: break;
1.1 deraadt 379: case 'w':
380: interval = atoi(optarg);
381: iflag = 1;
382: break;
383: case '?':
384: default:
385: usage();
386: }
387: argv += optind;
388: argc -= optind;
389:
1.33 deraadt 390: /*
1.56 reyk 391: * Show per-interface statistics which don't need access to
392: * kernel memory (they're using IOCTLs)
393: */
394: if (Wflag) {
395: if (interface == NULL)
396: usage();
397: net80211_ifstats(interface);
398: exit(0);
399: }
400:
401: /*
1.33 deraadt 402: * Discard setgid privileges if not the running kernel so that bad
403: * guys can't print interesting stuff from kernel memory.
1.59 markus 404: * Dumping PCB info is also restricted.
1.33 deraadt 405: */
1.61 djm 406: gid = getgid();
407: if (nlistf != NULL || memf != NULL || Pflag)
408: if (setresgid(gid, gid, gid) == -1)
409: err(1, "setresgid");
1.62 claudio 410: if (nlistf == NULL && memf == NULL && rflag && !Aflag) {
411: /* printing the routing table no longer needs kvm */
412: if (setresgid(gid, gid, gid) == -1)
413: err(1, "setresgid");
414: if (sflag)
415: rt_stats(1, 0);
416: else
417: p_rttables(af);
418: exit(0);
419: }
1.33 deraadt 420: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
421: buf)) == NULL) {
422: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
423: exit(1);
424: }
1.61 djm 425:
426: if (nlistf == NULL && memf == NULL && !Pflag)
427: if (setresgid(gid, gid, gid) == -1)
428: err(1, "setresgid");
1.33 deraadt 429:
1.1 deraadt 430: #define BACKWARD_COMPATIBILITY
431: #ifdef BACKWARD_COMPATIBILITY
432: if (*argv) {
433: if (isdigit(**argv)) {
434: interval = atoi(*argv);
435: if (interval <= 0)
436: usage();
437: ++argv;
438: iflag = 1;
439: }
440: if (*argv) {
441: nlistf = *argv;
442: if (*++argv)
443: memf = *argv;
444: }
445: }
446: #endif
1.14 deraadt 447:
1.1 deraadt 448: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
449: if (nlistf)
1.2 deraadt 450: fprintf(stderr, "%s: %s: no namelist\n", __progname,
451: nlistf);
1.1 deraadt 452: else
1.2 deraadt 453: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 454: exit(1);
455: }
456: if (mflag) {
1.25 provos 457: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
458: nl[N_MCLPOOL].n_value);
1.1 deraadt 459: exit(0);
460: }
461: if (pflag) {
1.45 markus 462: printproto(tp, tp->pr_name);
1.59 markus 463: exit(0);
464: }
465: if (Pflag) {
466: if (tp == NULL && (tp = name2protox("tcp")) == NULL) {
467: (void)fprintf(stderr,
468: "%s: %s: unknown protocol\n",
469: __progname, "tcp");
470: exit(1);
471: }
472: if (tp->pr_dump)
473: (tp->pr_dump)(pcbaddr);
1.1 deraadt 474: exit(0);
475: }
476: /*
477: * Keep file descriptors open to avoid overhead
478: * of open/close on each call to get* routines.
479: */
480: sethostent(1);
481: setnetent(1);
1.56 reyk 482:
1.1 deraadt 483: if (iflag) {
484: intpr(interval, nl[N_IFNET].n_value);
485: exit(0);
486: }
487: if (rflag) {
488: if (sflag)
1.62 claudio 489: rt_stats(0, nl[N_RTSTAT].n_value);
1.1 deraadt 490: else
1.63 claudio 491: routepr(nl[N_RTREE].n_value, nl[N_RTMASK].n_value,
492: nl[N_AF2RTAFIDX].n_value, nl[N_RTBLIDMAX].n_value);
1.1 deraadt 493: exit(0);
494: }
495: if (gflag) {
1.19 itojun 496: if (sflag) {
497: if (af == AF_INET || af == AF_UNSPEC)
498: mrt_stats(nl[N_MRTPROTO].n_value,
499: nl[N_MRTSTAT].n_value);
500: #ifdef INET6
501: if (af == AF_INET6 || af == AF_UNSPEC)
502: mrt6_stats(nl[N_MRT6PROTO].n_value,
503: nl[N_MRT6STAT].n_value);
504: #endif
505: }
506: else {
507: if (af == AF_INET || af == AF_UNSPEC)
508: mroutepr(nl[N_MRTPROTO].n_value,
509: nl[N_MFCHASHTBL].n_value,
510: nl[N_MFCHASH].n_value,
511: nl[N_VIFTABLE].n_value);
512: #ifdef INET6
513: if (af == AF_INET6 || af == AF_UNSPEC)
514: mroute6pr(nl[N_MRT6PROTO].n_value,
515: nl[N_MF6CTABLE].n_value,
516: nl[N_MIF6TABLE].n_value);
517: #endif
518: }
1.1 deraadt 519: exit(0);
520: }
521: if (af == AF_INET || af == AF_UNSPEC) {
522: setprotoent(1);
523: setservent(1);
524: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 525: while ((p = getprotoent())) {
1.1 deraadt 526: for (tp = protox; tp->pr_name; tp++)
527: if (strcmp(tp->pr_name, p->p_name) == 0)
528: break;
529: if (tp->pr_name == 0 || tp->pr_wanted == 0)
530: continue;
531: printproto(tp, p->p_name);
532: }
533: endprotoent();
534: }
1.19 itojun 535: #ifdef INET6
536: if (af == AF_INET6 || af == AF_UNSPEC)
537: for (tp = ip6protox; tp->pr_name; tp++)
538: printproto(tp, tp->pr_name);
539: #endif
1.4 mickey 540: if (af == AF_IPX || af == AF_UNSPEC)
541: for (tp = ipxprotox; tp->pr_name; tp++)
1.1 deraadt 542: printproto(tp, tp->pr_name);
543: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
544: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 545: if (af == AF_APPLETALK || af == AF_UNSPEC)
546: for (tp = atalkprotox; tp->pr_name; tp++)
547: printproto(tp, tp->pr_name);
1.1 deraadt 548: exit(0);
549: }
550:
551: /*
552: * Print out protocol statistics or control blocks (per sflag).
553: * If the interface was not specifically requested, and the symbol
554: * is not in the namelist, ignore this one.
555: */
556: static void
1.34 deraadt 557: printproto(struct protox *tp, char *name)
1.1 deraadt 558: {
1.38 deraadt 559: void (*pr)(u_long, char *);
1.35 dhartmei 560: u_char i;
1.1 deraadt 561:
562: if (sflag) {
563: pr = tp->pr_stats;
1.35 dhartmei 564: i = tp->pr_sindex;
1.1 deraadt 565: } else {
566: pr = tp->pr_cblocks;
1.35 dhartmei 567: i = tp->pr_index;
1.1 deraadt 568: }
1.35 dhartmei 569: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
570: (nl[i].n_value || af != AF_UNSPEC))
571: (*pr)(nl[i].n_value, name);
1.1 deraadt 572: }
573:
574: /*
575: * Read kernel memory, return 0 on success.
576: */
577: int
1.53 jaredy 578: kread(u_long addr, void *buf, int size)
1.1 deraadt 579: {
580:
581: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 582: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 583: kvm_geterr(kvmd));
584: return (-1);
585: }
586: return (0);
587: }
588:
589: char *
1.34 deraadt 590: plural(int n)
1.1 deraadt 591: {
592: return (n != 1 ? "s" : "");
593: }
594:
595: char *
1.34 deraadt 596: plurales(int n)
1.1 deraadt 597: {
598: return (n != 1 ? "es" : "");
599: }
600:
601: /*
602: * Find the protox for the given "well-known" name.
603: */
604: static struct protox *
1.34 deraadt 605: knownname(char *name)
1.1 deraadt 606: {
607: struct protox **tpp, *tp;
608:
609: for (tpp = protoprotox; *tpp; tpp++)
610: for (tp = *tpp; tp->pr_name; tp++)
611: if (strcmp(tp->pr_name, name) == 0)
612: return (tp);
613: return (NULL);
614: }
615:
616: /*
617: * Find the protox corresponding to name.
618: */
619: static struct protox *
1.34 deraadt 620: name2protox(char *name)
1.1 deraadt 621: {
622: struct protox *tp;
623: char **alias; /* alias from p->aliases */
624: struct protoent *p;
625:
626: /*
627: * Try to find the name in the list of "well-known" names. If that
628: * fails, check if name is an alias for an Internet protocol.
629: */
1.11 millert 630: if ((tp = knownname(name)))
1.1 deraadt 631: return (tp);
632:
633: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 634: while ((p = getprotoent())) {
1.1 deraadt 635: /* assert: name not same as p->name */
636: for (alias = p->p_aliases; *alias; alias++)
637: if (strcmp(name, *alias) == 0) {
638: endprotoent();
639: return (knownname(p->p_name));
640: }
641: }
642: endprotoent();
643: return (NULL);
644: }
645:
646: static void
1.34 deraadt 647: usage(void)
1.1 deraadt 648: {
649: (void)fprintf(stderr,
1.60 jaredy 650: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n"
1.65 ! jmc 651: " %s [-bdFgilmnqrstu] [-f address_family] [-M core] [-N system]\n"
1.60 jaredy 652: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n"
653: " %s [-M core] [-N system] -P pcbaddr\n"
654: " %s [-s] [-M core] [-N system] [-p protocol]\n"
655: " %s [-a] [-f address_family] [-i | -I interface]\n"
656: " %s [-W interface]\n",
657: __progname, __progname, __progname, __progname,
658: __progname, __progname, __progname);
1.1 deraadt 659: exit(1);
660: }
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