| Greg Hartman | 76d05dc | 2016-11-23 15:51:27 -0800 | [diff] [blame] | 1 | /* -------------------------------------------------------------------------- * |
| 2 | * |
| 3 | * Copyright 2011 Shao Miller - All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, Inc., 53 Temple Place Ste 330, |
| 8 | * Boston MA 02111-1307, USA; either version 2 of the License, or |
| 9 | * (at your option) any later version; incorporated herein by reference. |
| 10 | * |
| 11 | * ------------------------------------------------------------------------- */ |
| 12 | #ifndef M_NTFSSECT_H_ |
| 13 | |
| 14 | /**** |
| 15 | * ntfssect.h |
| 16 | * |
| 17 | * Fetch NTFS file cluster & sector information via Windows |
| 18 | * |
| 19 | * With special thanks to Mark Roddy for his article: |
| 20 | * http://www.wd-3.com/archive/luserland.htm |
| 21 | */ |
| 22 | |
| 23 | /*** Macros */ |
| 24 | #define M_NTFSSECT_H_ |
| 25 | #define M_NTFSSECT_API |
| 26 | |
| 27 | /*** Object types */ |
| 28 | |
| 29 | /* An "extent;" a contiguous range of file data */ |
| 30 | typedef struct S_NTFSSECT_EXTENT_ S_NTFSSECT_EXTENT; |
| 31 | |
| 32 | /* Volume info relevant to file cluster & sector info */ |
| 33 | typedef struct S_NTFSSECT_VOLINFO_ S_NTFSSECT_VOLINFO; |
| 34 | |
| 35 | /* Stores function pointers to some Windows functions */ |
| 36 | typedef struct S_NTFSSECT_XPFUNCS_ S_NTFSSECT_XPFUNCS; |
| 37 | |
| 38 | /*** Function types */ |
| 39 | |
| 40 | /* The function type for Kernel32.dll's GetDiskFreeSpace() */ |
| 41 | typedef BOOL WINAPI F_KERNEL32_GETDISKFREESPACE( |
| 42 | LPCTSTR, |
| 43 | LPDWORD, |
| 44 | LPDWORD, |
| 45 | LPDWORD, |
| 46 | LPDWORD |
| 47 | ); |
| 48 | |
| 49 | /* The function type for Kernel32.dll's GetVolumePathName() */ |
| 50 | typedef BOOL WINAPI F_KERNEL32_GETVOLUMEPATHNAME(LPCTSTR, LPCTSTR, DWORD); |
| 51 | |
| 52 | /*** Function declarations */ |
| 53 | |
| 54 | /** |
| 55 | * Fetch the extent containing a particular VCN |
| 56 | * |
| 57 | * @v File |
| 58 | * @v Vcn |
| 59 | * @v Extent |
| 60 | * @ret DWORD |
| 61 | */ |
| 62 | DWORD M_NTFSSECT_API NtfsSectGetFileVcnExtent( |
| 63 | HANDLE File, |
| 64 | LARGE_INTEGER * Vcn, |
| 65 | S_NTFSSECT_EXTENT * Extent |
| 66 | ); |
| 67 | |
| 68 | /** |
| 69 | * Populate a volume info object |
| 70 | * |
| 71 | * @v VolumeName |
| 72 | * @v VolumeInfo |
| 73 | * @ret DWORD |
| 74 | */ |
| 75 | DWORD M_NTFSSECT_API NtfsSectGetVolumeInfo( |
| 76 | CHAR * VolumeName, |
| 77 | S_NTFSSECT_VOLINFO * VolumeInfo |
| 78 | ); |
| 79 | |
| 80 | /** |
| 81 | * Populate a volume info object |
| 82 | * |
| 83 | * @v FileName |
| 84 | * @v VolumeInfo |
| 85 | * @ret DWORD |
| 86 | */ |
| 87 | DWORD M_NTFSSECT_API NtfsSectGetVolumeInfoFromFileName( |
| 88 | CHAR * FileName, |
| 89 | S_NTFSSECT_VOLINFO * VolumeInfo |
| 90 | ); |
| 91 | |
| 92 | /** |
| 93 | * Convert a volume LCN to an absolute disk LBA |
| 94 | * |
| 95 | * @v VolumeInfo |
| 96 | * @v Lcn |
| 97 | * @v Lba |
| 98 | * @ret DWORD |
| 99 | */ |
| 100 | DWORD M_NTFSSECT_API NtfsSectLcnToLba( |
| 101 | const S_NTFSSECT_VOLINFO * VolumeInfo, |
| 102 | const LARGE_INTEGER * Lcn, |
| 103 | LARGE_INTEGER * Lba |
| 104 | ); |
| 105 | |
| 106 | /** |
| 107 | * Load some helper XP functions |
| 108 | * |
| 109 | * @v XpFuncs |
| 110 | * @ret DWORD |
| 111 | */ |
| 112 | DWORD M_NTFSSECT_API NtfsSectLoadXpFuncs(S_NTFSSECT_XPFUNCS * XpFuncs); |
| 113 | |
| 114 | /** |
| 115 | * Unload some helper XP functions |
| 116 | * |
| 117 | * @v XpFuncs |
| 118 | * @ret DWORD |
| 119 | */ |
| 120 | VOID M_NTFSSECT_API NtfsSectUnloadXpFuncs(S_NTFSSECT_XPFUNCS * XpFuncs); |
| 121 | |
| 122 | /*** Object declarations */ |
| 123 | |
| 124 | /** |
| 125 | * The last error message set by one of our functions. |
| 126 | * Obviously not per-thread |
| 127 | */ |
| 128 | extern CHAR * NtfsSectLastErrorMessage; |
| 129 | |
| 130 | /*** Struct/union definitions */ |
| 131 | struct S_NTFSSECT_EXTENT_ { |
| 132 | LARGE_INTEGER FirstVcn; |
| 133 | LARGE_INTEGER NextVcn; |
| 134 | LARGE_INTEGER FirstLcn; |
| 135 | }; |
| 136 | |
| 137 | struct S_NTFSSECT_VOLINFO_ { |
| 138 | DWORD Size; |
| 139 | HANDLE Handle; |
| 140 | DWORD BytesPerSector; |
| 141 | DWORD SectorsPerCluster; |
| 142 | LARGE_INTEGER PartitionLba; |
| 143 | }; |
| 144 | |
| 145 | struct S_NTFSSECT_XPFUNCS_ { |
| 146 | DWORD Size; |
| 147 | HMODULE Kernel32; |
| 148 | F_KERNEL32_GETVOLUMEPATHNAME * GetVolumePathName; |
| 149 | F_KERNEL32_GETDISKFREESPACE * GetDiskFreeSpace; |
| 150 | }; |
| 151 | |
| 152 | #endif /* M_NTFSSECT_H_ */ |
