xref: /386bsd/usr/src/usr.sbin/tcpdump/bpf_dump.c (revision a2142627)
1 /*
2  * Copyright (c) 1990 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that: (1) source code distributions
7  * retain the above copyright notice and this paragraph in its entirety, (2)
8  * distributions including binary code include the above copyright notice and
9  * this paragraph in its entirety in the documentation or other materials
10  * provided with the distribution, and (3) all advertising materials mentioning
11  * features or use of this software display the following acknowledgement:
12  * ``This product includes software developed by the University of California,
13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14  * the University nor the names of its contributors may be used to endorse
15  * or promote products derived from this software without specific prior
16  * written permission.
17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20  */
21 #ifndef lint
22 static char rcsid[] =
23     "@(#) $Header$ (LBL)";
24 #endif
25 
26 #include <sys/types.h>
27 #include <sys/time.h>
28 #include <net/bpf.h>
29 
30 void
bpf_dump(p,option)31 bpf_dump(p, option)
32 	struct bpf_program *p;
33 	int option;
34 {
35 	struct bpf_insn *insn;
36 	int i;
37 	int n = p->bf_len;
38 
39 	insn = p->bf_insns;
40 	if (option > 2) {
41 		printf("%d\n", n);
42 		for (i = 0; i < n; ++insn, ++i) {
43 			printf("%lu %lu %lu %lu\n", insn->code,
44 			       insn->jt, insn->jf, insn->k);
45 		}
46 		return ;
47 	}
48 	if (option > 1) {
49 		for (i = 0; i < n; ++insn, ++i)
50 			printf("{ 0x%x, %d, %d, 0x%08x },\n",
51 			       insn->code, insn->jt, insn->jf, insn->k);
52 		return;
53 	}
54 	for (i = 0; i < n; ++insn, ++i) {
55 #ifdef BDEBUG
56 		extern int bids[];
57 		printf(bids[i] > 0 ? "[%02d]" : " -- ", bids[i] - 1);
58 #endif
59 		puts(bpf_image(insn, i));
60 	}
61 }
62