Annotation of src/usr.bin/netstat/main.c, Revision 1.61
1.61 ! djm 1: /* $OpenBSD: main.c,v 1.60 2005/06/16 16:03:32 jaredy 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
1.61 ! djm 43: static char *rcsid = "$OpenBSD: main.c,v 1.60 2005/06/16 16:03:32 jaredy 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" },
1.55 deraadt 155: { ""}
1.1 deraadt 156: };
157:
158: struct protox {
1.38 deraadt 159: u_char pr_index; /* index into nlist of cb head */
160: u_char pr_sindex; /* index into nlist of stat block */
161: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
162: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
163: void (*pr_stats)(u_long, char *); /* statistics printing routine */
1.59 markus 164: void (*pr_dump)(u_long); /* pcb printing routine */
1.38 deraadt 165: char *pr_name; /* well-known name */
1.1 deraadt 166: } protox[] = {
167: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
1.59 markus 168: tcp_stats, tcp_dump, "tcp" },
1.1 deraadt 169: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
1.59 markus 170: udp_stats, 0, "udp" },
1.40 markus 171: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.59 markus 172: ip_stats, 0, "ip" },
1.1 deraadt 173: { -1, N_ICMPSTAT, 1, 0,
1.59 markus 174: icmp_stats, 0, "icmp" },
1.1 deraadt 175: { -1, N_IGMPSTAT, 1, 0,
1.59 markus 176: igmp_stats, 0, "igmp" },
1.8 angelos 177: { -1, N_AHSTAT, 1, 0,
1.59 markus 178: ah_stats, 0, "ah" },
1.8 angelos 179: { -1, N_ESPSTAT, 1, 0,
1.59 markus 180: esp_stats, 0, "esp" },
1.8 angelos 181: { -1, N_IP4STAT, 1, 0,
1.59 markus 182: ipip_stats, 0, "ipencap" },
1.18 angelos 183: { -1, N_ETHERIPSTAT, 1, 0,
1.59 markus 184: etherip_stats,0, "etherip" },
1.29 mickey 185: { -1, N_IPCOMPSTAT, 1, 0,
1.59 markus 186: ipcomp_stats, 0, "ipcomp" },
1.44 deraadt 187: { -1, N_CARPSTAT, 1, 0,
1.59 markus 188: carp_stats, 0, "carp" },
1.44 deraadt 189: { -1, N_PFSYNCSTAT, 1, 0,
1.59 markus 190: pfsync_stats, 0, "pfsync" },
1.50 mcbride 191: { -1, N_PIMSTAT, 1, 0,
1.59 markus 192: pim_stats, 0, "pim" },
1.1 deraadt 193: { -1, -1, 0, 0,
1.59 markus 194: 0, 0, 0 }
1.1 deraadt 195: };
196:
1.19 itojun 197: #ifdef INET6
198: struct protox ip6protox[] = {
1.22 itojun 199: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.59 markus 200: 0, tcp_dump, "tcp" },
1.22 itojun 201: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.59 markus 202: 0, 0, "udp" },
1.40 markus 203: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.59 markus 204: ip6_stats, 0, "ip6" },
1.19 itojun 205: { -1, N_ICMP6STAT, 1, 0,
1.59 markus 206: icmp6_stats, 0, "icmp6" },
1.19 itojun 207: { -1, N_PIM6STAT, 1, 0,
1.59 markus 208: pim6_stats, 0, "pim6" },
1.32 itojun 209: { -1, N_RIP6STAT, 1, 0,
1.59 markus 210: rip6_stats, 0, "rip6" },
1.19 itojun 211: { -1, -1, 0, 0,
1.59 markus 212: 0, 0, 0 }
1.19 itojun 213: };
214: #endif
215:
1.4 mickey 216: struct protox ipxprotox[] = {
217: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
1.59 markus 218: ipx_stats, 0, "ipx" },
1.4 mickey 219: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
1.59 markus 220: spx_stats, 0, "spx" },
1.4 mickey 221: { -1, -1, 0, 0,
1.59 markus 222: 0, 0, 0 }
1.4 mickey 223: };
224:
1.12 denny 225: struct protox atalkprotox[] = {
226: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
1.59 markus 227: ddp_stats, 0, "ddp" },
1.12 denny 228: { -1, -1, 0, 0,
1.59 markus 229: 0, 0, 0 }
1.12 denny 230: };
231:
1.19 itojun 232: #ifndef INET6
1.34 deraadt 233: struct protox *protoprotox[] = {
1.58 henning 234: protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 235: };
1.19 itojun 236: #else
1.34 deraadt 237: struct protox *protoprotox[] = {
1.58 henning 238: protox, ip6protox, ipxprotox, atalkprotox, NULL
1.34 deraadt 239: };
1.19 itojun 240: #endif
1.1 deraadt 241:
1.30 millert 242: static void printproto(struct protox *, char *);
243: static void usage(void);
244: static struct protox *name2protox(char *);
245: static struct protox *knownname(char *);
1.1 deraadt 246:
247: kvm_t *kvmd;
248:
249: int
1.34 deraadt 250: main(int argc, char *argv[])
1.1 deraadt 251: {
252: extern char *optarg;
253: extern int optind;
1.28 mpech 254: struct protoent *p;
255: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 256: int ch;
1.59 markus 257: char *nlistf = NULL, *memf = NULL, *ep;
1.1 deraadt 258: char buf[_POSIX2_LINE_MAX];
1.61 ! djm 259: gid_t gid;
1.59 markus 260: u_long pcbaddr = 0;
1.1 deraadt 261:
262: af = AF_UNSPEC;
263:
1.59 markus 264: while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:P:qrstuvW:w:")) != -1)
1.31 deraadt 265: switch (ch) {
1.1 deraadt 266: case 'A':
267: Aflag = 1;
268: break;
269: case 'a':
270: aflag = 1;
1.24 camield 271: break;
272: case 'b':
273: bflag = 1;
1.1 deraadt 274: break;
275: case 'd':
276: dflag = 1;
277: break;
278: case 'f':
1.4 mickey 279: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 280: af = AF_INET;
1.19 itojun 281: else if (strcmp(optarg, "inet6") == 0)
282: af = AF_INET6;
1.7 kstailey 283: else if (strcmp(optarg, "local") == 0)
284: af = AF_LOCAL;
1.1 deraadt 285: else if (strcmp(optarg, "unix") == 0)
286: af = AF_UNIX;
1.4 mickey 287: else if (strcmp(optarg, "ipx") == 0)
288: af = AF_IPX;
1.10 angelos 289: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 290: af = PF_KEY;
1.12 denny 291: else if (strcmp(optarg, "atalk") == 0)
292: af = AF_APPLETALK;
1.1 deraadt 293: else {
294: (void)fprintf(stderr,
295: "%s: %s: unknown address family\n",
1.2 deraadt 296: __progname, optarg);
1.1 deraadt 297: exit(1);
298: }
299: break;
300: case 'g':
301: gflag = 1;
302: break;
1.2 deraadt 303: case 'I':
1.1 deraadt 304: iflag = 1;
1.2 deraadt 305: interface = optarg;
1.1 deraadt 306: break;
307: case 'i':
308: iflag = 1;
309: break;
1.19 itojun 310: case 'l':
311: lflag = 1;
312: break;
1.1 deraadt 313: case 'M':
314: memf = optarg;
315: break;
316: case 'm':
317: mflag = 1;
318: break;
319: case 'N':
320: nlistf = optarg;
321: break;
322: case 'n':
323: nflag = 1;
324: break;
325: case 'p':
326: if ((tp = name2protox(optarg)) == NULL) {
327: (void)fprintf(stderr,
1.42 jmc 328: "%s: %s: unknown protocol\n",
1.2 deraadt 329: __progname, optarg);
1.1 deraadt 330: exit(1);
331: }
332: pflag = 1;
1.27 brian 333: break;
1.59 markus 334: case 'P':
335: errno = 0;
336: pcbaddr = strtoul(optarg, &ep, 16);
337: if (optarg[0] == '\0' || *ep != '\0' ||
338: errno == ERANGE) {
339: (void)fprintf(stderr,
340: "%s: %s: invalid PCB address\n",
341: __progname, optarg);
342: exit(1);
343: }
344: Pflag = 1;
345: break;
1.27 brian 346: case 'q':
347: qflag = 1;
1.1 deraadt 348: break;
349: case 'r':
350: rflag = 1;
1.46 cedric 351: break;
1.1 deraadt 352: case 's':
353: ++sflag;
354: break;
355: case 't':
356: tflag = 1;
357: break;
358: case 'u':
359: af = AF_UNIX;
1.13 peter 360: break;
361: case 'v':
362: vflag = 1;
1.1 deraadt 363: break;
1.56 reyk 364: case 'W':
365: Wflag = 1;
366: interface = optarg;
367: break;
1.1 deraadt 368: case 'w':
369: interval = atoi(optarg);
370: iflag = 1;
371: break;
372: case '?':
373: default:
374: usage();
375: }
376: argv += optind;
377: argc -= optind;
378:
1.33 deraadt 379: /*
1.56 reyk 380: * Show per-interface statistics which don't need access to
381: * kernel memory (they're using IOCTLs)
382: */
383: if (Wflag) {
384: if (interface == NULL)
385: usage();
386: net80211_ifstats(interface);
387: exit(0);
388: }
389:
390: /*
1.33 deraadt 391: * Discard setgid privileges if not the running kernel so that bad
392: * guys can't print interesting stuff from kernel memory.
1.59 markus 393: * Dumping PCB info is also restricted.
1.33 deraadt 394: */
1.61 ! djm 395: gid = getgid();
! 396: if (nlistf != NULL || memf != NULL || Pflag)
! 397: if (setresgid(gid, gid, gid) == -1)
! 398: err(1, "setresgid");
1.33 deraadt 399:
400: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
401: buf)) == NULL) {
402: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
403: exit(1);
404: }
1.61 ! djm 405:
! 406: if (nlistf == NULL && memf == NULL && !Pflag)
! 407: if (setresgid(gid, gid, gid) == -1)
! 408: err(1, "setresgid");
1.33 deraadt 409:
1.1 deraadt 410: #define BACKWARD_COMPATIBILITY
411: #ifdef BACKWARD_COMPATIBILITY
412: if (*argv) {
413: if (isdigit(**argv)) {
414: interval = atoi(*argv);
415: if (interval <= 0)
416: usage();
417: ++argv;
418: iflag = 1;
419: }
420: if (*argv) {
421: nlistf = *argv;
422: if (*++argv)
423: memf = *argv;
424: }
425: }
426: #endif
1.14 deraadt 427:
1.1 deraadt 428: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
429: if (nlistf)
1.2 deraadt 430: fprintf(stderr, "%s: %s: no namelist\n", __progname,
431: nlistf);
1.1 deraadt 432: else
1.2 deraadt 433: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 434: exit(1);
435: }
436: if (mflag) {
1.25 provos 437: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
438: nl[N_MCLPOOL].n_value);
1.1 deraadt 439: exit(0);
440: }
441: if (pflag) {
1.45 markus 442: printproto(tp, tp->pr_name);
1.59 markus 443: exit(0);
444: }
445: if (Pflag) {
446: if (tp == NULL && (tp = name2protox("tcp")) == NULL) {
447: (void)fprintf(stderr,
448: "%s: %s: unknown protocol\n",
449: __progname, "tcp");
450: exit(1);
451: }
452: if (tp->pr_dump)
453: (tp->pr_dump)(pcbaddr);
1.1 deraadt 454: exit(0);
455: }
456: /*
457: * Keep file descriptors open to avoid overhead
458: * of open/close on each call to get* routines.
459: */
460: sethostent(1);
461: setnetent(1);
1.56 reyk 462:
1.1 deraadt 463: if (iflag) {
464: intpr(interval, nl[N_IFNET].n_value);
465: exit(0);
466: }
467: if (rflag) {
468: if (sflag)
469: rt_stats(nl[N_RTSTAT].n_value);
470: else
471: routepr(nl[N_RTREE].n_value);
472: exit(0);
473: }
474: if (gflag) {
1.19 itojun 475: if (sflag) {
476: if (af == AF_INET || af == AF_UNSPEC)
477: mrt_stats(nl[N_MRTPROTO].n_value,
478: nl[N_MRTSTAT].n_value);
479: #ifdef INET6
480: if (af == AF_INET6 || af == AF_UNSPEC)
481: mrt6_stats(nl[N_MRT6PROTO].n_value,
482: nl[N_MRT6STAT].n_value);
483: #endif
484: }
485: else {
486: if (af == AF_INET || af == AF_UNSPEC)
487: mroutepr(nl[N_MRTPROTO].n_value,
488: nl[N_MFCHASHTBL].n_value,
489: nl[N_MFCHASH].n_value,
490: nl[N_VIFTABLE].n_value);
491: #ifdef INET6
492: if (af == AF_INET6 || af == AF_UNSPEC)
493: mroute6pr(nl[N_MRT6PROTO].n_value,
494: nl[N_MF6CTABLE].n_value,
495: nl[N_MIF6TABLE].n_value);
496: #endif
497: }
1.1 deraadt 498: exit(0);
499: }
500: if (af == AF_INET || af == AF_UNSPEC) {
501: setprotoent(1);
502: setservent(1);
503: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 504: while ((p = getprotoent())) {
1.1 deraadt 505: for (tp = protox; tp->pr_name; tp++)
506: if (strcmp(tp->pr_name, p->p_name) == 0)
507: break;
508: if (tp->pr_name == 0 || tp->pr_wanted == 0)
509: continue;
510: printproto(tp, p->p_name);
511: }
512: endprotoent();
513: }
1.19 itojun 514: #ifdef INET6
515: if (af == AF_INET6 || af == AF_UNSPEC)
516: for (tp = ip6protox; tp->pr_name; tp++)
517: printproto(tp, tp->pr_name);
518: #endif
1.4 mickey 519: if (af == AF_IPX || af == AF_UNSPEC)
520: for (tp = ipxprotox; tp->pr_name; tp++)
1.1 deraadt 521: printproto(tp, tp->pr_name);
522: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
523: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 524: if (af == AF_APPLETALK || af == AF_UNSPEC)
525: for (tp = atalkprotox; tp->pr_name; tp++)
526: printproto(tp, tp->pr_name);
1.1 deraadt 527: exit(0);
528: }
529:
530: /*
531: * Print out protocol statistics or control blocks (per sflag).
532: * If the interface was not specifically requested, and the symbol
533: * is not in the namelist, ignore this one.
534: */
535: static void
1.34 deraadt 536: printproto(struct protox *tp, char *name)
1.1 deraadt 537: {
1.38 deraadt 538: void (*pr)(u_long, char *);
1.35 dhartmei 539: u_char i;
1.1 deraadt 540:
541: if (sflag) {
542: pr = tp->pr_stats;
1.35 dhartmei 543: i = tp->pr_sindex;
1.1 deraadt 544: } else {
545: pr = tp->pr_cblocks;
1.35 dhartmei 546: i = tp->pr_index;
1.1 deraadt 547: }
1.35 dhartmei 548: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
549: (nl[i].n_value || af != AF_UNSPEC))
550: (*pr)(nl[i].n_value, name);
1.1 deraadt 551: }
552:
553: /*
554: * Read kernel memory, return 0 on success.
555: */
556: int
1.53 jaredy 557: kread(u_long addr, void *buf, int size)
1.1 deraadt 558: {
559:
560: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 561: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 562: kvm_geterr(kvmd));
563: return (-1);
564: }
565: return (0);
566: }
567:
568: char *
1.34 deraadt 569: plural(int n)
1.1 deraadt 570: {
571: return (n != 1 ? "s" : "");
572: }
573:
574: char *
1.34 deraadt 575: plurales(int n)
1.1 deraadt 576: {
577: return (n != 1 ? "es" : "");
578: }
579:
580: /*
581: * Find the protox for the given "well-known" name.
582: */
583: static struct protox *
1.34 deraadt 584: knownname(char *name)
1.1 deraadt 585: {
586: struct protox **tpp, *tp;
587:
588: for (tpp = protoprotox; *tpp; tpp++)
589: for (tp = *tpp; tp->pr_name; tp++)
590: if (strcmp(tp->pr_name, name) == 0)
591: return (tp);
592: return (NULL);
593: }
594:
595: /*
596: * Find the protox corresponding to name.
597: */
598: static struct protox *
1.34 deraadt 599: name2protox(char *name)
1.1 deraadt 600: {
601: struct protox *tp;
602: char **alias; /* alias from p->aliases */
603: struct protoent *p;
604:
605: /*
606: * Try to find the name in the list of "well-known" names. If that
607: * fails, check if name is an alias for an Internet protocol.
608: */
1.11 millert 609: if ((tp = knownname(name)))
1.1 deraadt 610: return (tp);
611:
612: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 613: while ((p = getprotoent())) {
1.1 deraadt 614: /* assert: name not same as p->name */
615: for (alias = p->p_aliases; *alias; alias++)
616: if (strcmp(name, *alias) == 0) {
617: endprotoent();
618: return (knownname(p->p_name));
619: }
620: }
621: endprotoent();
622: return (NULL);
623: }
624:
625: static void
1.34 deraadt 626: usage(void)
1.1 deraadt 627: {
628: (void)fprintf(stderr,
1.60 jaredy 629: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n"
630: " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n"
631: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n"
632: " %s [-M core] [-N system] -P pcbaddr\n"
633: " %s [-s] [-M core] [-N system] [-p protocol]\n"
634: " %s [-a] [-f address_family] [-i | -I interface]\n"
635: " %s [-W interface]\n",
636: __progname, __progname, __progname, __progname,
637: __progname, __progname, __progname);
1.1 deraadt 638: exit(1);
639: }
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