2 * Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the Computer Systems
16 * Engineering Group at Lawrence Berkeley Laboratory.
17 * 4. Neither the name of the University nor of the Laboratory may be used
18 * to endorse or promote products derived from this software without
19 * specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char rcsid[] =
36 "@(#) $Header: /usr/local/cvs/linux/tools/build/e100boot/libpcap-0.4/pcap.c,v 1.1 1999/08/26 10:05:26 johana Exp $ (LBL)";
39 #include <sys/types.h>
47 #ifdef HAVE_OS_PROTO_H
54 pcap_dispatch(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
57 if (p->sf.rfile != NULL)
58 return (pcap_offline_read(p, cnt, callback, user));
59 return (pcap_read(p, cnt, callback, user));
63 pcap_loop(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
68 if (p->sf.rfile != NULL)
69 n = pcap_offline_read(p, cnt, callback, user);
72 * XXX keep reading until we get something
73 * (or an error occurs)
76 n = pcap_read(p, cnt, callback, user);
90 struct pcap_pkthdr *hdr;
96 pcap_oneshot(u_char *userData, const struct pcap_pkthdr *h, const u_char *pkt)
98 struct singleton *sp = (struct singleton *)userData;
104 pcap_next(pcap_t *p, struct pcap_pkthdr *h)
109 if (pcap_dispatch(p, 1, pcap_oneshot, (u_char*)&s) <= 0)
115 pcap_datalink(pcap_t *p)
117 return (p->linktype);
121 pcap_snapshot(pcap_t *p)
123 return (p->snapshot);
127 pcap_is_swapped(pcap_t *p)
129 return (p->sf.swapped);
133 pcap_major_version(pcap_t *p)
135 return (p->sf.version_major);
139 pcap_minor_version(pcap_t *p)
141 return (p->sf.version_minor);
147 return (p->sf.rfile);
151 pcap_fileno(pcap_t *p)
157 pcap_perror(pcap_t *p, char *prefix)
159 fprintf(stderr, "%s: %s\n", prefix, p->errbuf);
163 pcap_geterr(pcap_t *p)
169 * Not all systems have strerror().
172 pcap_strerror(int errnum)
175 return (strerror(errnum));
178 extern const char *const sys_errlist[];
179 static char ebuf[20];
181 if ((unsigned int)errnum < sys_nerr)
182 return ((char *)sys_errlist[errnum]);
183 (void)sprintf(ebuf, "Unknown error: %d", errnum);
189 pcap_close(pcap_t *p)
194 if (p->sf.rfile != NULL) {
195 (void)fclose(p->sf.rfile);
196 if (p->sf.base != NULL)
198 } else if (p->buffer != NULL)
201 if (p->md.device != NULL)