Программа поиска в свободных кластерах символьных последовательностей из заданного набора

        [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern UInt32 SetFilePointer(SafeFileHandle hFile, Int32 lDistanceToMove, out Int32 lpDistanceToMoveHigh, UInt32 dwMoveMethod);

        [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern UInt32 GetLastError();

        [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern bool ReadFile(SafeFileHandle hFile, byte[] lpBuffer, UInt32 NumberOfBytesToRead, out UInt32 pNumberOfBytesRead, IntPtr Overlapped);

        [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern bool WriteFile(SafeFileHandle hFile, byte[] lpBuffer, UInt32 NumberOfBytesToWrite, out UInt32 pNumberOfBytesWrite, IntPtr Overlapped);

        [DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern bool CloseHandle(SafeFileHandle hFile);

        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern UInt32 GetShortPathName(StringBuilder lpszLongPath, StringBuilder lpszShortPath, UInt32 cchBuffer);

        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]

        public static extern bool BackupRead(SafeFileHandle hFile, byte[] lpBuffer, UInt32 nNumberOfBytesToRead, out UInt32 lpNumberOfBytesRead, bool bAbort, bool bProcessSecurity, out IntPtr lpContext);

        public const UInt32 FILE_SHARE_READ = 0x00000001;

        public const UInt32 FILE_SHARE_WRITE = 0x00000002;

        public const UInt32 OPEN_EXISTING = 0x00000003;

        public const UInt32 GENERIC_READ = 0x80000000;

        public const UInt32 GENERIC_WRITE = 0x40000000;

        public const UInt32 INVALID_SET_FILE_POINTER = 0xFFFFFFFF;

        public const UInt32 FILE_FLAG_BACKUP_SEMANTICS = 0x2000000;

        public const UInt32 FILE_FLAG_NO_BUFFERING = 0x20000000;

        public const UInt32 FILE_FLAG_WRITE_THROUGH = 0x80000000;

    }

}