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_ */ 153
