Annotation of src/usr.bin/netstat/main.c, Revision 1.68
1.68 ! claudio 1: /* $OpenBSD: main.c,v 1.67 2007/06/28 14:27:02 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
1.68 ! claudio 43: static char *rcsid = "$OpenBSD: main.c,v 1.67 2007/06/28 14:27:02 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:
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[] = {
1.55 deraadt 70: #define N_MBSTAT 0
1.1 deraadt 71: { "_mbstat" },
1.55 deraadt 72: #define N_IPSTAT 1
1.1 deraadt 73: { "_ipstat" },
1.55 deraadt 74: #define N_TCBTABLE 2
1.1 deraadt 75: { "_tcbtable" },
1.55 deraadt 76: #define N_TCPSTAT 3
1.1 deraadt 77: { "_tcpstat" },
1.55 deraadt 78: #define N_UDBTABLE 4
1.1 deraadt 79: { "_udbtable" },
1.55 deraadt 80: #define N_UDPSTAT 5
1.1 deraadt 81: { "_udpstat" },
1.55 deraadt 82: #define N_IFNET 6
1.1 deraadt 83: { "_ifnet" },
1.55 deraadt 84: #define N_ICMPSTAT 7
1.1 deraadt 85: { "_icmpstat" },
1.55 deraadt 86: #define N_RTSTAT 8
1.1 deraadt 87: { "_rtstat" },
1.55 deraadt 88: #define N_UNIXSW 9
1.1 deraadt 89: { "_unixsw" },
1.58 henning 90: #define N_RTREE 10
1.1 deraadt 91: { "_rt_tables"},
1.58 henning 92: #define N_FILE 11
1.1 deraadt 93: { "_file" },
1.58 henning 94: #define N_IGMPSTAT 12
1.1 deraadt 95: { "_igmpstat" },
1.58 henning 96: #define N_MRTPROTO 13
1.1 deraadt 97: { "_ip_mrtproto" },
1.58 henning 98: #define N_MRTSTAT 14
1.1 deraadt 99: { "_mrtstat" },
1.58 henning 100: #define N_MFCHASHTBL 15
1.1 deraadt 101: { "_mfchashtbl" },
1.58 henning 102: #define N_MFCHASH 16
1.1 deraadt 103: { "_mfchash" },
1.58 henning 104: #define N_VIFTABLE 17
1.1 deraadt 105: { "_viftable" },
1.67 claudio 106: #define N_AHSTAT 18
1.8 angelos 107: { "_ahstat"},
1.67 claudio 108: #define N_ESPSTAT 19
1.8 angelos 109: { "_espstat"},
1.67 claudio 110: #define N_IP4STAT 20
1.21 angelos 111: { "_ipipstat"},
1.67 claudio 112: #define N_DDPSTAT 21
1.12 denny 113: { "_ddpstat"},
1.67 claudio 114: #define N_DDPCB 22
1.12 denny 115: { "_ddpcb"},
1.67 claudio 116: #define N_ETHERIPSTAT 23
1.18 angelos 117: { "_etheripstat"},
1.67 claudio 118: #define N_IP6STAT 24
1.19 itojun 119: { "_ip6stat" },
1.67 claudio 120: #define N_ICMP6STAT 25
1.19 itojun 121: { "_icmp6stat" },
1.67 claudio 122: #define N_PIM6STAT 26
1.19 itojun 123: { "_pim6stat" },
1.67 claudio 124: #define N_MRT6PROTO 27
1.19 itojun 125: { "_ip6_mrtproto" },
1.67 claudio 126: #define N_MRT6STAT 28
1.19 itojun 127: { "_mrt6stat" },
1.67 claudio 128: #define N_MF6CTABLE 29
1.19 itojun 129: { "_mf6ctable" },
1.67 claudio 130: #define N_MIF6TABLE 30
1.19 itojun 131: { "_mif6table" },
1.67 claudio 132: #define N_MBPOOL 31
1.25 provos 133: { "_mbpool" },
1.67 claudio 134: #define N_MCLPOOL 32
1.25 provos 135: { "_mclpool" },
1.67 claudio 136: #define N_IPCOMPSTAT 33
1.26 jjbg 137: { "_ipcompstat" },
1.67 claudio 138: #define N_RIP6STAT 34
1.32 itojun 139: { "_rip6stat" },
1.67 claudio 140: #define N_CARPSTAT 35
1.39 mcbride 141: { "_carpstats" },
1.67 claudio 142: #define N_RAWIPTABLE 36
1.40 markus 143: { "_rawcbtable" },
1.67 claudio 144: #define N_RAWIP6TABLE 37
1.40 markus 145: { "_rawin6pcbtable" },
1.67 claudio 146: #define N_PFSYNCSTAT 38
1.43 mcbride 147: { "_pfsyncstats" },
1.67 claudio 148: #define N_PIMSTAT 39
1.50 mcbride 149: { "_pimstat" },
1.67 claudio 150: #define N_AF2RTAFIDX 40
1.63 claudio 151: { "_af2rtafidx" },
1.67 claudio 152: #define N_RTBLIDMAX 41
1.63 claudio 153: { "_rtbl_id_max" },
1.67 claudio 154: #define N_RTMASK 42
1.63 claudio 155: { "_mask_rnhead" },
1.55 deraadt 156: { ""}
1.1 deraadt 157: };
158:
159: struct protox {
1.38 deraadt 160: u_char pr_index; /* index into nlist of cb head */
161: u_char pr_sindex; /* index into nlist of stat block */
162: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
163: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
164: void (*pr_stats)(u_long, char *); /* statistics printing routine */
1.59 markus 165: void (*pr_dump)(u_long); /* pcb printing routine */
1.38 deraadt 166: char *pr_name; /* well-known name */
1.1 deraadt 167: } protox[] = {
168: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
1.59 markus 169: tcp_stats, tcp_dump, "tcp" },
1.1 deraadt 170: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
1.59 markus 171: udp_stats, 0, "udp" },
1.40 markus 172: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.59 markus 173: ip_stats, 0, "ip" },
1.1 deraadt 174: { -1, N_ICMPSTAT, 1, 0,
1.59 markus 175: icmp_stats, 0, "icmp" },
1.1 deraadt 176: { -1, N_IGMPSTAT, 1, 0,
1.59 markus 177: igmp_stats, 0, "igmp" },
1.8 angelos 178: { -1, N_AHSTAT, 1, 0,
1.59 markus 179: ah_stats, 0, "ah" },
1.8 angelos 180: { -1, N_ESPSTAT, 1, 0,
1.59 markus 181: esp_stats, 0, "esp" },
1.8 angelos 182: { -1, N_IP4STAT, 1, 0,
1.59 markus 183: ipip_stats, 0, "ipencap" },
1.18 angelos 184: { -1, N_ETHERIPSTAT, 1, 0,
1.59 markus 185: etherip_stats,0, "etherip" },
1.29 mickey 186: { -1, N_IPCOMPSTAT, 1, 0,
1.59 markus 187: ipcomp_stats, 0, "ipcomp" },
1.44 deraadt 188: { -1, N_CARPSTAT, 1, 0,
1.59 markus 189: carp_stats, 0, "carp" },
1.44 deraadt 190: { -1, N_PFSYNCSTAT, 1, 0,
1.59 markus 191: pfsync_stats, 0, "pfsync" },
1.50 mcbride 192: { -1, N_PIMSTAT, 1, 0,
1.59 markus 193: pim_stats, 0, "pim" },
1.1 deraadt 194: { -1, -1, 0, 0,
1.59 markus 195: 0, 0, 0 }
1.1 deraadt 196: };
197:
1.19 itojun 198: #ifdef INET6
199: struct protox ip6protox[] = {
1.22 itojun 200: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.59 markus 201: 0, tcp_dump, "tcp" },
1.22 itojun 202: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.59 markus 203: 0, 0, "udp" },
1.40 markus 204: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.59 markus 205: ip6_stats, 0, "ip6" },
1.19 itojun 206: { -1, N_ICMP6STAT, 1, 0,
1.59 markus 207: icmp6_stats, 0, "icmp6" },
1.19 itojun 208: { -1, N_PIM6STAT, 1, 0,
1.59 markus 209: pim6_stats, 0, "pim6" },
1.32 itojun 210: { -1, N_RIP6STAT, 1, 0,
1.59 markus 211: rip6_stats, 0, "rip6" },
1.19 itojun 212: { -1, -1, 0, 0,
1.59 markus 213: 0, 0, 0 }
1.19 itojun 214: };
215: #endif
216:
1.12 denny 217: struct protox atalkprotox[] = {
218: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
1.59 markus 219: ddp_stats, 0, "ddp" },
1.12 denny 220: { -1, -1, 0, 0,
1.59 markus 221: 0, 0, 0 }
1.12 denny 222: };
223:
1.19 itojun 224: #ifndef INET6
1.34 deraadt 225: struct protox *protoprotox[] = {
1.66 henning 226: protox, atalkprotox, NULL
1.34 deraadt 227: };
1.19 itojun 228: #else
1.34 deraadt 229: struct protox *protoprotox[] = {
1.66 henning 230: protox, ip6protox, atalkprotox, NULL
1.34 deraadt 231: };
1.19 itojun 232: #endif
1.1 deraadt 233:
1.30 millert 234: static void printproto(struct protox *, char *);
235: static void usage(void);
236: static struct protox *name2protox(char *);
237: static struct protox *knownname(char *);
1.1 deraadt 238:
239: kvm_t *kvmd;
240:
241: int
1.34 deraadt 242: main(int argc, char *argv[])
1.1 deraadt 243: {
244: extern char *optarg;
245: extern int optind;
1.68 ! claudio 246: const char *errstr;
1.28 mpech 247: struct protoent *p;
248: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 249: int ch;
1.59 markus 250: char *nlistf = NULL, *memf = NULL, *ep;
1.1 deraadt 251: char buf[_POSIX2_LINE_MAX];
1.61 djm 252: gid_t gid;
1.59 markus 253: u_long pcbaddr = 0;
1.68 ! claudio 254: u_int tableid = 0;
1.1 deraadt 255:
256: af = AF_UNSPEC;
257:
1.68 ! claudio 258: while ((ch = getopt(argc, argv, "AabdFf:gI:ilM:mN:np:P:qrsT:tuvW:w:")) != -1)
1.31 deraadt 259: switch (ch) {
1.1 deraadt 260: case 'A':
261: Aflag = 1;
262: break;
263: case 'a':
264: aflag = 1;
1.24 camield 265: break;
266: case 'b':
267: bflag = 1;
1.1 deraadt 268: break;
269: case 'd':
270: dflag = 1;
1.64 pyr 271: break;
272: case 'F':
273: Fflag = 1;
1.1 deraadt 274: break;
275: case 'f':
1.4 mickey 276: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 277: af = AF_INET;
1.19 itojun 278: else if (strcmp(optarg, "inet6") == 0)
279: af = AF_INET6;
1.7 kstailey 280: else if (strcmp(optarg, "local") == 0)
281: af = AF_LOCAL;
1.1 deraadt 282: else if (strcmp(optarg, "unix") == 0)
283: af = AF_UNIX;
1.10 angelos 284: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 285: af = PF_KEY;
1.12 denny 286: else if (strcmp(optarg, "atalk") == 0)
287: af = AF_APPLETALK;
1.63 claudio 288: else if (strcmp(optarg, "mask") == 0)
289: af = 0xff;
1.1 deraadt 290: else {
291: (void)fprintf(stderr,
292: "%s: %s: unknown address family\n",
1.2 deraadt 293: __progname, optarg);
1.1 deraadt 294: exit(1);
295: }
296: break;
297: case 'g':
298: gflag = 1;
299: break;
1.2 deraadt 300: case 'I':
1.1 deraadt 301: iflag = 1;
1.2 deraadt 302: interface = optarg;
1.1 deraadt 303: break;
304: case 'i':
305: iflag = 1;
306: break;
1.19 itojun 307: case 'l':
308: lflag = 1;
309: break;
1.1 deraadt 310: case 'M':
311: memf = optarg;
312: break;
313: case 'm':
314: mflag = 1;
315: break;
316: case 'N':
317: nlistf = optarg;
318: break;
319: case 'n':
320: nflag = 1;
321: break;
322: case 'p':
323: if ((tp = name2protox(optarg)) == NULL) {
324: (void)fprintf(stderr,
1.42 jmc 325: "%s: %s: unknown protocol\n",
1.2 deraadt 326: __progname, optarg);
1.1 deraadt 327: exit(1);
328: }
329: pflag = 1;
1.27 brian 330: break;
1.59 markus 331: case 'P':
332: errno = 0;
333: pcbaddr = strtoul(optarg, &ep, 16);
334: if (optarg[0] == '\0' || *ep != '\0' ||
335: errno == ERANGE) {
336: (void)fprintf(stderr,
337: "%s: %s: invalid PCB address\n",
338: __progname, optarg);
339: exit(1);
340: }
341: Pflag = 1;
342: break;
1.27 brian 343: case 'q':
344: qflag = 1;
1.1 deraadt 345: break;
346: case 'r':
347: rflag = 1;
1.46 cedric 348: break;
1.1 deraadt 349: case 's':
350: ++sflag;
351: break;
1.68 ! claudio 352: case 'T':
! 353: tableid = strtonum(optarg, 0, RT_TABLEID_MAX, &errstr);
! 354: if (errstr)
! 355: errx(1, "invalid table id: %s", errstr);
! 356: break;
1.1 deraadt 357: case 't':
358: tflag = 1;
359: break;
360: case 'u':
361: af = AF_UNIX;
1.13 peter 362: break;
363: case 'v':
364: vflag = 1;
1.1 deraadt 365: break;
1.56 reyk 366: case 'W':
367: Wflag = 1;
368: interface = optarg;
369: break;
1.1 deraadt 370: case 'w':
371: interval = atoi(optarg);
372: iflag = 1;
373: break;
374: case '?':
375: default:
376: usage();
377: }
378: argv += optind;
379: argc -= optind;
380:
1.33 deraadt 381: /*
1.56 reyk 382: * Show per-interface statistics which don't need access to
383: * kernel memory (they're using IOCTLs)
384: */
385: if (Wflag) {
386: if (interface == NULL)
387: usage();
388: net80211_ifstats(interface);
389: exit(0);
390: }
391:
392: /*
1.33 deraadt 393: * Discard setgid privileges if not the running kernel so that bad
394: * guys can't print interesting stuff from kernel memory.
1.59 markus 395: * Dumping PCB info is also restricted.
1.33 deraadt 396: */
1.61 djm 397: gid = getgid();
398: if (nlistf != NULL || memf != NULL || Pflag)
399: if (setresgid(gid, gid, gid) == -1)
400: err(1, "setresgid");
1.62 claudio 401: if (nlistf == NULL && memf == NULL && rflag && !Aflag) {
402: /* printing the routing table no longer needs kvm */
403: if (setresgid(gid, gid, gid) == -1)
404: err(1, "setresgid");
405: if (sflag)
406: rt_stats(1, 0);
407: else
1.68 ! claudio 408: p_rttables(af, tableid);
1.62 claudio 409: exit(0);
410: }
1.33 deraadt 411: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
412: buf)) == NULL) {
413: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
414: exit(1);
415: }
1.61 djm 416:
417: if (nlistf == NULL && memf == NULL && !Pflag)
418: if (setresgid(gid, gid, gid) == -1)
419: err(1, "setresgid");
1.33 deraadt 420:
1.1 deraadt 421: #define BACKWARD_COMPATIBILITY
422: #ifdef BACKWARD_COMPATIBILITY
423: if (*argv) {
424: if (isdigit(**argv)) {
425: interval = atoi(*argv);
426: if (interval <= 0)
427: usage();
428: ++argv;
429: iflag = 1;
430: }
431: if (*argv) {
432: nlistf = *argv;
433: if (*++argv)
434: memf = *argv;
435: }
436: }
437: #endif
1.14 deraadt 438:
1.1 deraadt 439: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
440: if (nlistf)
1.2 deraadt 441: fprintf(stderr, "%s: %s: no namelist\n", __progname,
442: nlistf);
1.1 deraadt 443: else
1.2 deraadt 444: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 445: exit(1);
446: }
447: if (mflag) {
1.25 provos 448: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
449: nl[N_MCLPOOL].n_value);
1.1 deraadt 450: exit(0);
451: }
452: if (pflag) {
1.45 markus 453: printproto(tp, tp->pr_name);
1.59 markus 454: exit(0);
455: }
456: if (Pflag) {
457: if (tp == NULL && (tp = name2protox("tcp")) == NULL) {
458: (void)fprintf(stderr,
459: "%s: %s: unknown protocol\n",
460: __progname, "tcp");
461: exit(1);
462: }
463: if (tp->pr_dump)
464: (tp->pr_dump)(pcbaddr);
1.1 deraadt 465: exit(0);
466: }
467: /*
468: * Keep file descriptors open to avoid overhead
469: * of open/close on each call to get* routines.
470: */
471: sethostent(1);
472: setnetent(1);
1.56 reyk 473:
1.1 deraadt 474: if (iflag) {
475: intpr(interval, nl[N_IFNET].n_value);
476: exit(0);
477: }
478: if (rflag) {
479: if (sflag)
1.62 claudio 480: rt_stats(0, nl[N_RTSTAT].n_value);
1.1 deraadt 481: else
1.63 claudio 482: routepr(nl[N_RTREE].n_value, nl[N_RTMASK].n_value,
483: nl[N_AF2RTAFIDX].n_value, nl[N_RTBLIDMAX].n_value);
1.1 deraadt 484: exit(0);
485: }
486: if (gflag) {
1.19 itojun 487: if (sflag) {
488: if (af == AF_INET || af == AF_UNSPEC)
489: mrt_stats(nl[N_MRTPROTO].n_value,
490: nl[N_MRTSTAT].n_value);
491: #ifdef INET6
492: if (af == AF_INET6 || af == AF_UNSPEC)
493: mrt6_stats(nl[N_MRT6PROTO].n_value,
494: nl[N_MRT6STAT].n_value);
495: #endif
496: }
497: else {
498: if (af == AF_INET || af == AF_UNSPEC)
499: mroutepr(nl[N_MRTPROTO].n_value,
500: nl[N_MFCHASHTBL].n_value,
501: nl[N_MFCHASH].n_value,
502: nl[N_VIFTABLE].n_value);
503: #ifdef INET6
504: if (af == AF_INET6 || af == AF_UNSPEC)
505: mroute6pr(nl[N_MRT6PROTO].n_value,
506: nl[N_MF6CTABLE].n_value,
507: nl[N_MIF6TABLE].n_value);
508: #endif
509: }
1.1 deraadt 510: exit(0);
511: }
512: if (af == AF_INET || af == AF_UNSPEC) {
513: setprotoent(1);
514: setservent(1);
515: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 516: while ((p = getprotoent())) {
1.1 deraadt 517: for (tp = protox; tp->pr_name; tp++)
518: if (strcmp(tp->pr_name, p->p_name) == 0)
519: break;
520: if (tp->pr_name == 0 || tp->pr_wanted == 0)
521: continue;
522: printproto(tp, p->p_name);
523: }
524: endprotoent();
525: }
1.19 itojun 526: #ifdef INET6
527: if (af == AF_INET6 || af == AF_UNSPEC)
528: for (tp = ip6protox; tp->pr_name; tp++)
529: printproto(tp, tp->pr_name);
530: #endif
1.1 deraadt 531: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
532: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 533: if (af == AF_APPLETALK || af == AF_UNSPEC)
534: for (tp = atalkprotox; tp->pr_name; tp++)
535: printproto(tp, tp->pr_name);
1.1 deraadt 536: exit(0);
537: }
538:
539: /*
540: * Print out protocol statistics or control blocks (per sflag).
541: * If the interface was not specifically requested, and the symbol
542: * is not in the namelist, ignore this one.
543: */
544: static void
1.34 deraadt 545: printproto(struct protox *tp, char *name)
1.1 deraadt 546: {
1.38 deraadt 547: void (*pr)(u_long, char *);
1.35 dhartmei 548: u_char i;
1.1 deraadt 549:
550: if (sflag) {
551: pr = tp->pr_stats;
1.35 dhartmei 552: i = tp->pr_sindex;
1.1 deraadt 553: } else {
554: pr = tp->pr_cblocks;
1.35 dhartmei 555: i = tp->pr_index;
1.1 deraadt 556: }
1.35 dhartmei 557: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
558: (nl[i].n_value || af != AF_UNSPEC))
559: (*pr)(nl[i].n_value, name);
1.1 deraadt 560: }
561:
562: /*
563: * Read kernel memory, return 0 on success.
564: */
565: int
1.53 jaredy 566: kread(u_long addr, void *buf, int size)
1.1 deraadt 567: {
568:
569: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 570: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 571: kvm_geterr(kvmd));
572: return (-1);
573: }
574: return (0);
575: }
576:
577: char *
1.34 deraadt 578: plural(int n)
1.1 deraadt 579: {
580: return (n != 1 ? "s" : "");
581: }
582:
583: char *
1.34 deraadt 584: plurales(int n)
1.1 deraadt 585: {
586: return (n != 1 ? "es" : "");
587: }
588:
589: /*
590: * Find the protox for the given "well-known" name.
591: */
592: static struct protox *
1.34 deraadt 593: knownname(char *name)
1.1 deraadt 594: {
595: struct protox **tpp, *tp;
596:
597: for (tpp = protoprotox; *tpp; tpp++)
598: for (tp = *tpp; tp->pr_name; tp++)
599: if (strcmp(tp->pr_name, name) == 0)
600: return (tp);
601: return (NULL);
602: }
603:
604: /*
605: * Find the protox corresponding to name.
606: */
607: static struct protox *
1.34 deraadt 608: name2protox(char *name)
1.1 deraadt 609: {
610: struct protox *tp;
611: char **alias; /* alias from p->aliases */
612: struct protoent *p;
613:
614: /*
615: * Try to find the name in the list of "well-known" names. If that
616: * fails, check if name is an alias for an Internet protocol.
617: */
1.11 millert 618: if ((tp = knownname(name)))
1.1 deraadt 619: return (tp);
620:
621: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 622: while ((p = getprotoent())) {
1.1 deraadt 623: /* assert: name not same as p->name */
624: for (alias = p->p_aliases; *alias; alias++)
625: if (strcmp(name, *alias) == 0) {
626: endprotoent();
627: return (knownname(p->p_name));
628: }
629: }
630: endprotoent();
631: return (NULL);
632: }
633:
634: static void
1.34 deraadt 635: usage(void)
1.1 deraadt 636: {
637: (void)fprintf(stderr,
1.60 jaredy 638: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n"
1.68 ! claudio 639: " %s [-bdFgilmnqrstu] [-f address_family] [-M core] [-N system] [-T tableid]\n"
1.60 jaredy 640: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n"
641: " %s [-M core] [-N system] -P pcbaddr\n"
642: " %s [-s] [-M core] [-N system] [-p protocol]\n"
643: " %s [-a] [-f address_family] [-i | -I interface]\n"
644: " %s [-W interface]\n",
645: __progname, __progname, __progname, __progname,
646: __progname, __progname, __progname);
1.1 deraadt 647: exit(1);
648: }
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