projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * The contents of this file constitute Original Code as defined in and | |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 11 | * | |
| 12 | * This Original Code and all software distributed under the License are | |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 19 | * | |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | #ifndef __HFS_ENDIAN_H__ | |
| 23 | #define __HFS_ENDIAN_H__ | |
| 24 | ||
| 25 | /* | |
| 26 | * hfs_endian.h | |
| 27 | * | |
| 28 | * This file prototypes endian swapping routines for the HFS/HFS Plus | |
| 29 | * volume format. | |
| 30 | */ | |
| 31 | #include "hfs.h" | |
| 32 | #include "hfscommon/headers/BTreesInternal.h" | |
| 33 | #include <architecture/byte_order.h> | |
| 34 | ||
| 35 | /*********************/ | |
| 36 | /* BIG ENDIAN Macros */ | |
| 37 | /*********************/ | |
| 38 | #if BYTE_ORDER == BIG_ENDIAN | |
| 39 | ||
| 40 | /* HFS is always big endian, make swaps into no-ops */ | |
| 41 | #define SWAP_BE16(__a) (__a) | |
| 42 | #define SWAP_BE32(__a) (__a) | |
| 43 | #define SWAP_BE64(__a) (__a) | |
| 44 | ||
| 45 | /* HFS is always big endian, no swapping needed */ | |
| 46 | #define SWAP_HFS_PLUS_FORK_DATA(__a) | |
| 47 | #define SWAP_BT_NODE(__a, __b, __c) | |
| 48 | ||
| 49 | /************************/ | |
| 50 | /* LITTLE ENDIAN Macros */ | |
| 51 | /************************/ | |
| 52 | #elif BYTE_ORDER == LITTLE_ENDIAN | |
| 53 | ||
| 54 | /* HFS is always big endian, make swaps actually swap */ | |
| 55 | #define SWAP_BE16(__a) NXSwapBigShortToHost (__a) | |
| 56 | #define SWAP_BE32(__a) NXSwapBigLongToHost (__a) | |
| 57 | #define SWAP_BE64(__a) NXSwapBigLongLongToHost (__a) | |
| 58 | ||
| 59 | #define SWAP_HFS_PLUS_FORK_DATA(__a) hfs_swap_HFSPlusForkData ((__a)) | |
| 60 | #define SWAP_BT_NODE(__a, __b, __c, __d) hfs_swap_BTNode ((__a), (__b), (__c), (__d)) | |
| 61 | ||
| 62 | #else | |
| 63 | #warning Unknown byte order | |
| 64 | #error | |
| 65 | #endif | |
| 66 | ||
| 67 | #ifdef __cplusplus | |
| 68 | extern "C" { | |
| 69 | #endif | |
| 70 | ||
| 71 | void hfs_swap_HFSPlusForkData (HFSPlusForkData *src); | |
| 72 | int hfs_swap_BTNode (BlockDescriptor *src, int isHFSPlus, HFSCatalogNodeID fileID, int unswap); | |
| 73 | ||
| 74 | #ifdef __cplusplus | |
| 75 | } | |
| 76 | #endif | |
| 77 | ||
| 78 | #endif /* __HFS_FORMAT__ */ |