/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef __HFS_ENDIAN_H__ #define __HFS_ENDIAN_H__ /* * hfs_endian.h * * This file prototypes endian swapping routines for the HFS/HFS Plus * volume format. */ #include <hfs/hfs_format.h> #include <architecture/byte_order.h> #include "SRuntime.h" /*********************/ /* BIG ENDIAN Macros */ /*********************/ #if BYTE_ORDER == BIG_ENDIAN /* HFS is always big endian, make swaps into no-ops */ #define SWAP_BE16(__a) (__a) #define SWAP_BE32(__a) (__a) #define SWAP_BE64(__a) (__a) /* HFS is always big endian, no swapping needed */ #define SWAP_HFSMDB(__a) #define SWAP_HFSPLUSVH(__a) #define SWAP_BT_NODE(__a, __b, __c, __d) /************************/ /* LITTLE ENDIAN Macros */ /************************/ #elif BYTE_ORDER == LITTLE_ENDIAN /* HFS is always big endian, make swaps actually swap */ #define SWAP_BE16(__a) NXSwapBigShortToHost (__a) #define SWAP_BE32(__a) NXSwapBigLongToHost (__a) #define SWAP_BE64(__a) NXSwapBigLongLongToHost (__a) #define SWAP_HFSMDB(__a) hfs_swap_HFSMasterDirectoryBlock ((__a)) #define SWAP_HFSPLUSVH(__a) hfs_swap_HFSPlusVolumeHeader ((__a)) #define SWAP_BT_NODE(__a, __b, __c, __d) hfs_swap_BTNode ((__a), (__b), (__c), (__d)) #else #warning Unknown byte order #error #endif #ifdef __cplusplus extern "C" { #endif void hfs_swap_HFSMasterDirectoryBlock (void *buf); void hfs_swap_HFSPlusVolumeHeader (void *buf); int hfs_swap_BTNode (BlockDescriptor *src, int isHFSPlus, HFSCatalogNodeID fileID, int unswap); #ifdef __cplusplus } #endif #endif /* __HFS_FORMAT__ */