pcap-null.c revision 56889 
1/*
2 * Copyright (c) 1994, 1995, 1996
3 *	The Regents of the University of California.  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
22static const char rcsid[] =
23    "@(#) $Header: /tcpdump/master/libpcap/pcap-null.c,v 1.7.1.1 1999/10/07 23:46:40 mcr Exp $ (LBL)";
24#endif
25
26#include <sys/param.h>			/* optionally get BSD define */
27
28#include <string.h>
29
30#include "gnuc.h"
31#ifdef HAVE_OS_PROTO_H
32#include "os-proto.h"
33#endif
34
35#include "pcap-int.h"
36
37static char nosup[] = "live packet capture not supported on this system";
38
39int
40pcap_stats(pcap_t *p, struct pcap_stat *ps)
41{
42
43	(void)sprintf(p->errbuf, "pcap_stats: %s", nosup);
44	return (-1);
45}
46
47int
48pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
49{
50
51	(void)sprintf(p->errbuf, "pcap_read: %s", nosup);
52	return (-1);
53}
54
55pcap_t *
56pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
57{
58
59	(void)strcpy(ebuf, nosup);
60	return (NULL);
61}
62
63int
64pcap_setfilter(pcap_t *p, struct bpf_program *fp)
65{
66
67	if (p->sf.rfile == NULL) {
68		(void)sprintf(p->errbuf, "pcap_setfilter: %s", nosup);
69		return (-1);
70	}
71	p->fcode = *fp;
72	return (0);
73}
74