Annotation of src/usr.bin/netstat/main.c, Revision 1.63
1.63 ! claudio 1: /* $OpenBSD: main.c,v 1.62 2006/05/27 19:16:37 claudio 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
1.63 ! claudio 43: static char *rcsid = "$OpenBSD: main.c,v 1.62 2006/05/27 19:16:37 claudio 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:
1.59 markus 270: while ((ch = getopt(argc, argv, "Aabdf: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;
283: break;
284: case 'f':
1.4 mickey 285: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 286: af = AF_INET;
1.19 itojun 287: else if (strcmp(optarg, "inet6") == 0)
288: af = AF_INET6;
1.7 kstailey 289: else if (strcmp(optarg, "local") == 0)
290: af = AF_LOCAL;
1.1 deraadt 291: else if (strcmp(optarg, "unix") == 0)
292: af = AF_UNIX;
1.4 mickey 293: else if (strcmp(optarg, "ipx") == 0)
294: af = AF_IPX;
1.10 angelos 295: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 296: af = PF_KEY;
1.12 denny 297: else if (strcmp(optarg, "atalk") == 0)
298: af = AF_APPLETALK;
1.63 ! claudio 299: else if (strcmp(optarg, "mask") == 0)
! 300: af = 0xff;
1.1 deraadt 301: else {
302: (void)fprintf(stderr,
303: "%s: %s: unknown address family\n",
1.2 deraadt 304: __progname, optarg);
1.1 deraadt 305: exit(1);
306: }
307: break;
308: case 'g':
309: gflag = 1;
310: break;
1.2 deraadt 311: case 'I':
1.1 deraadt 312: iflag = 1;
1.2 deraadt 313: interface = optarg;
1.1 deraadt 314: break;
315: case 'i':
316: iflag = 1;
317: break;
1.19 itojun 318: case 'l':
319: lflag = 1;
320: break;
1.1 deraadt 321: case 'M':
322: memf = optarg;
323: break;
324: case 'm':
325: mflag = 1;
326: break;
327: case 'N':
328: nlistf = optarg;
329: break;
330: case 'n':
331: nflag = 1;
332: break;
333: case 'p':
334: if ((tp = name2protox(optarg)) == NULL) {
335: (void)fprintf(stderr,
1.42 jmc 336: "%s: %s: unknown protocol\n",
1.2 deraadt 337: __progname, optarg);
1.1 deraadt 338: exit(1);
339: }
340: pflag = 1;
1.27 brian 341: break;
1.59 markus 342: case 'P':
343: errno = 0;
344: pcbaddr = strtoul(optarg, &ep, 16);
345: if (optarg[0] == '\0' || *ep != '\0' ||
346: errno == ERANGE) {
347: (void)fprintf(stderr,
348: "%s: %s: invalid PCB address\n",
349: __progname, optarg);
350: exit(1);
351: }
352: Pflag = 1;
353: break;
1.27 brian 354: case 'q':
355: qflag = 1;
1.1 deraadt 356: break;
357: case 'r':
358: rflag = 1;
1.46 cedric 359: break;
1.1 deraadt 360: case 's':
361: ++sflag;
362: break;
363: case 't':
364: tflag = 1;
365: break;
366: case 'u':
367: af = AF_UNIX;
1.13 peter 368: break;
369: case 'v':
370: vflag = 1;
1.1 deraadt 371: break;
1.56 reyk 372: case 'W':
373: Wflag = 1;
374: interface = optarg;
375: break;
1.1 deraadt 376: case 'w':
377: interval = atoi(optarg);
378: iflag = 1;
379: break;
380: case '?':
381: default:
382: usage();
383: }
384: argv += optind;
385: argc -= optind;
386:
1.33 deraadt 387: /*
1.56 reyk 388: * Show per-interface statistics which don't need access to
389: * kernel memory (they're using IOCTLs)
390: */
391: if (Wflag) {
392: if (interface == NULL)
393: usage();
394: net80211_ifstats(interface);
395: exit(0);
396: }
397:
398: /*
1.33 deraadt 399: * Discard setgid privileges if not the running kernel so that bad
400: * guys can't print interesting stuff from kernel memory.
1.59 markus 401: * Dumping PCB info is also restricted.
1.33 deraadt 402: */
1.61 djm 403: gid = getgid();
404: if (nlistf != NULL || memf != NULL || Pflag)
405: if (setresgid(gid, gid, gid) == -1)
406: err(1, "setresgid");
1.62 claudio 407: if (nlistf == NULL && memf == NULL && rflag && !Aflag) {
408: /* printing the routing table no longer needs kvm */
409: if (setresgid(gid, gid, gid) == -1)
410: err(1, "setresgid");
411: if (sflag)
412: rt_stats(1, 0);
413: else
414: p_rttables(af);
415: exit(0);
416: }
1.33 deraadt 417: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
418: buf)) == NULL) {
419: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
420: exit(1);
421: }
1.61 djm 422:
423: if (nlistf == NULL && memf == NULL && !Pflag)
424: if (setresgid(gid, gid, gid) == -1)
425: err(1, "setresgid");
1.33 deraadt 426:
1.1 deraadt 427: #define BACKWARD_COMPATIBILITY
428: #ifdef BACKWARD_COMPATIBILITY
429: if (*argv) {
430: if (isdigit(**argv)) {
431: interval = atoi(*argv);
432: if (interval <= 0)
433: usage();
434: ++argv;
435: iflag = 1;
436: }
437: if (*argv) {
438: nlistf = *argv;
439: if (*++argv)
440: memf = *argv;
441: }
442: }
443: #endif
1.14 deraadt 444:
1.1 deraadt 445: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
446: if (nlistf)
1.2 deraadt 447: fprintf(stderr, "%s: %s: no namelist\n", __progname,
448: nlistf);
1.1 deraadt 449: else
1.2 deraadt 450: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 451: exit(1);
452: }
453: if (mflag) {
1.25 provos 454: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
455: nl[N_MCLPOOL].n_value);
1.1 deraadt 456: exit(0);
457: }
458: if (pflag) {
1.45 markus 459: printproto(tp, tp->pr_name);
1.59 markus 460: exit(0);
461: }
462: if (Pflag) {
463: if (tp == NULL && (tp = name2protox("tcp")) == NULL) {
464: (void)fprintf(stderr,
465: "%s: %s: unknown protocol\n",
466: __progname, "tcp");
467: exit(1);
468: }
469: if (tp->pr_dump)
470: (tp->pr_dump)(pcbaddr);
1.1 deraadt 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);
1.56 reyk 479:
1.1 deraadt 480: if (iflag) {
481: intpr(interval, nl[N_IFNET].n_value);
482: exit(0);
483: }
484: if (rflag) {
485: if (sflag)
1.62 claudio 486: rt_stats(0, nl[N_RTSTAT].n_value);
1.1 deraadt 487: else
1.63 ! claudio 488: routepr(nl[N_RTREE].n_value, nl[N_RTMASK].n_value,
! 489: nl[N_AF2RTAFIDX].n_value, nl[N_RTBLIDMAX].n_value);
1.1 deraadt 490: exit(0);
491: }
492: if (gflag) {
1.19 itojun 493: if (sflag) {
494: if (af == AF_INET || af == AF_UNSPEC)
495: mrt_stats(nl[N_MRTPROTO].n_value,
496: nl[N_MRTSTAT].n_value);
497: #ifdef INET6
498: if (af == AF_INET6 || af == AF_UNSPEC)
499: mrt6_stats(nl[N_MRT6PROTO].n_value,
500: nl[N_MRT6STAT].n_value);
501: #endif
502: }
503: else {
504: if (af == AF_INET || af == AF_UNSPEC)
505: mroutepr(nl[N_MRTPROTO].n_value,
506: nl[N_MFCHASHTBL].n_value,
507: nl[N_MFCHASH].n_value,
508: nl[N_VIFTABLE].n_value);
509: #ifdef INET6
510: if (af == AF_INET6 || af == AF_UNSPEC)
511: mroute6pr(nl[N_MRT6PROTO].n_value,
512: nl[N_MF6CTABLE].n_value,
513: nl[N_MIF6TABLE].n_value);
514: #endif
515: }
1.1 deraadt 516: exit(0);
517: }
518: if (af == AF_INET || af == AF_UNSPEC) {
519: setprotoent(1);
520: setservent(1);
521: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 522: while ((p = getprotoent())) {
1.1 deraadt 523: for (tp = protox; tp->pr_name; tp++)
524: if (strcmp(tp->pr_name, p->p_name) == 0)
525: break;
526: if (tp->pr_name == 0 || tp->pr_wanted == 0)
527: continue;
528: printproto(tp, p->p_name);
529: }
530: endprotoent();
531: }
1.19 itojun 532: #ifdef INET6
533: if (af == AF_INET6 || af == AF_UNSPEC)
534: for (tp = ip6protox; tp->pr_name; tp++)
535: printproto(tp, tp->pr_name);
536: #endif
1.4 mickey 537: if (af == AF_IPX || af == AF_UNSPEC)
538: for (tp = ipxprotox; tp->pr_name; tp++)
1.1 deraadt 539: printproto(tp, tp->pr_name);
540: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
541: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 542: if (af == AF_APPLETALK || af == AF_UNSPEC)
543: for (tp = atalkprotox; tp->pr_name; tp++)
544: printproto(tp, tp->pr_name);
1.1 deraadt 545: exit(0);
546: }
547:
548: /*
549: * Print out protocol statistics or control blocks (per sflag).
550: * If the interface was not specifically requested, and the symbol
551: * is not in the namelist, ignore this one.
552: */
553: static void
1.34 deraadt 554: printproto(struct protox *tp, char *name)
1.1 deraadt 555: {
1.38 deraadt 556: void (*pr)(u_long, char *);
1.35 dhartmei 557: u_char i;
1.1 deraadt 558:
559: if (sflag) {
560: pr = tp->pr_stats;
1.35 dhartmei 561: i = tp->pr_sindex;
1.1 deraadt 562: } else {
563: pr = tp->pr_cblocks;
1.35 dhartmei 564: i = tp->pr_index;
1.1 deraadt 565: }
1.35 dhartmei 566: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
567: (nl[i].n_value || af != AF_UNSPEC))
568: (*pr)(nl[i].n_value, name);
1.1 deraadt 569: }
570:
571: /*
572: * Read kernel memory, return 0 on success.
573: */
574: int
1.53 jaredy 575: kread(u_long addr, void *buf, int size)
1.1 deraadt 576: {
577:
578: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 579: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 580: kvm_geterr(kvmd));
581: return (-1);
582: }
583: return (0);
584: }
585:
586: char *
1.34 deraadt 587: plural(int n)
1.1 deraadt 588: {
589: return (n != 1 ? "s" : "");
590: }
591:
592: char *
1.34 deraadt 593: plurales(int n)
1.1 deraadt 594: {
595: return (n != 1 ? "es" : "");
596: }
597:
598: /*
599: * Find the protox for the given "well-known" name.
600: */
601: static struct protox *
1.34 deraadt 602: knownname(char *name)
1.1 deraadt 603: {
604: struct protox **tpp, *tp;
605:
606: for (tpp = protoprotox; *tpp; tpp++)
607: for (tp = *tpp; tp->pr_name; tp++)
608: if (strcmp(tp->pr_name, name) == 0)
609: return (tp);
610: return (NULL);
611: }
612:
613: /*
614: * Find the protox corresponding to name.
615: */
616: static struct protox *
1.34 deraadt 617: name2protox(char *name)
1.1 deraadt 618: {
619: struct protox *tp;
620: char **alias; /* alias from p->aliases */
621: struct protoent *p;
622:
623: /*
624: * Try to find the name in the list of "well-known" names. If that
625: * fails, check if name is an alias for an Internet protocol.
626: */
1.11 millert 627: if ((tp = knownname(name)))
1.1 deraadt 628: return (tp);
629:
630: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 631: while ((p = getprotoent())) {
1.1 deraadt 632: /* assert: name not same as p->name */
633: for (alias = p->p_aliases; *alias; alias++)
634: if (strcmp(name, *alias) == 0) {
635: endprotoent();
636: return (knownname(p->p_name));
637: }
638: }
639: endprotoent();
640: return (NULL);
641: }
642:
643: static void
1.34 deraadt 644: usage(void)
1.1 deraadt 645: {
646: (void)fprintf(stderr,
1.60 jaredy 647: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n"
648: " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n"
649: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n"
650: " %s [-M core] [-N system] -P pcbaddr\n"
651: " %s [-s] [-M core] [-N system] [-p protocol]\n"
652: " %s [-a] [-f address_family] [-i | -I interface]\n"
653: " %s [-W interface]\n",
654: __progname, __progname, __progname, __progname,
655: __progname, __progname, __progname);
1.1 deraadt 656: exit(1);
657: }
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