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      1 /*
      2  * Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998
      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 the following conditions
      7  * are met:
      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.
     20  *
     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
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static const char rcsid[] _U_ =
     36     "@(#) $Header: /tcpdump/master/tcpdump/missing/datalinks.c,v 1.3 2003/11/16 09:36:47 guy Exp $ (LBL)";
     37 #endif
     38 
     39 #ifdef HAVE_CONFIG_H
     40 #include "config.h"
     41 #endif
     42 
     43 #include <tcpdump-stdinc.h>
     44 
     45 #include <pcap.h>
     46 #include <stdlib.h>
     47 #include <stdio.h>
     48 
     49 #include "pcap-missing.h"
     50 
     51 /*
     52  * Stub versions for platforms that don't support them.
     53  */
     54 int
     55 pcap_list_datalinks(pcap_t *p, int **dlt_buffer)
     56 {
     57 	/*
     58 	 * This platform doesn't support changing the DLT for an
     59 	 * interface.  Return a list of DLTs containing only the
     60 	 * DLT this device supports.
     61 	 */
     62 	*dlt_buffer = (int*)malloc(sizeof(**dlt_buffer));
     63 	if (*dlt_buffer == NULL)
     64 		return (-1);
     65 	**dlt_buffer = pcap_datalink(p);
     66 	return (1);
     67 }
     68