diskdev_cmds/disklib/dkopen.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * File I/O stubs
  26  *
  27  * Linux and other OSs may use open64, lseek64 instead of defaulting off_t to
  28  * 64-bits like OSX does. This file provides cover functions to always perform
  29  * 64-bit file I/O.
  30  */
  31
  32 #ifndef _DKOPEN_H_
  33 #define _DKOPEN_H_
  34
  35 /* Must predefine the large file flags before including sys/types.h */
  36 #if defined (linux)
  37 #define _LARGEFILE_SOURCE
  38 #define _LARGEFILE64_SOURCE
  39 #elif defined (__APPLE__)
  40 #else
  41 #error Platform not recognized
  42 #endif
  43
  44 #include <sys/types.h>
  45
  46 /* Typedef off64_t for platforms that don't have it declared */
  47 #if defined (__APPLE__) && !defined (linux)
  48 typedef u_int64_t off64_t;
  49 #endif
  50
  51 int dkopen (const char *path, int flags, int mode);
  52 int dkclose (int filedes);
  53
  54 off64_t dklseek (int fileds, off64_t offset, int whence);
  55
  56 #endif