dns.subproj/res_data.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * This file contains global data but it is a `private_extern' in the
  26  * shared library so that its address and size can change.
  27  */
  28
  29 #if defined(__APPLE__)
  30
  31 /*
  32  * _res is declared to be the same siae as struct __res_9_state
  33  * This allows both the BIND-8 library in libSystem (this one)
  34  * and the new BIND-9 library in libresolv to share the same
  35  * structure.  We ues the __res_9_state's _pad variable to store
  36  * a version number when _res have been initialized by the BIND-9
  37  * library, and take precautions to make them work together.
  38  */
  39 #define RES_9_STATE_SIZE 512
  40 char _res[RES_9_STATE_SIZE] = {0};
  41 int _net_stayopen = 0;
  42 #endif