external/bsd/libpcap/dist/fad-null.c

   1 /*      $NetBSD: fad-null.c,v 1.2 2014/11/19 19:33:30 christos Exp $    */
   2
   3 /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
   4 /*
   5  * Copyright (c) 1994, 1995, 1996, 1997, 1998
   6  *      The 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.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the Computer Systems
  19  *      Engineering Group at Lawrence Berkeley Laboratory.
  20  * 4. Neither the name of the University nor of the Laboratory may be used
  21  *    to endorse or promote products derived from this software without
  22  *    specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __RCSID("$NetBSD: fad-null.c,v 1.2 2014/11/19 19:33:30 christos Exp $");
  39
  40 #ifdef HAVE_CONFIG_H
  41 #include "config.h"
  42 #endif
  43
  44 #include <pcap.h>
  45
  46 /*
  47  * Get a list of all interfaces that are up and that we can open.
  48  * Returns -1 on error, 0 otherwise.
  49  * The list, as returned through "alldevsp", may be null if no interfaces
  50  * were up and could be opened.
  51  *
  52  * This is the implementation used on platforms that have no support for
  53  * packet capture.
  54  */
  55 int
  56 pcap_findalldevs_interfaces(pcap_if_t **alldevsp, char *errbuf)
  57 {
  58         /*
  59          * Succeed, but don't return any interfaces; we return only those
  60          * we can open, and we can't open any if there's no support
  61          * for packet capture.
  62          */
  63         *alldevsp = NULL;
  64         return (0);
  65 }