86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/**************************************************************************************************
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FILENAME: FastFat2.h
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COPYRIGHT© 2001 Microsoft Corporation and Executive Software International, Inc.
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DESCRIPTION:
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Fat file sytem prototypes.
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**************************************************************************************************/
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// Define some special character codes used in FAT directory entries
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#define Deleted 0xe5 //The code placed in the first byte of the filename on a deleted fat entry.
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#define DirPointer 0x2e //The code placed in the first byte of the filename on a Directory Pointer fat entry.
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//The attribute field of a FAT entry can be set to any of the following (which identifies what kind of entry it is):
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#define EndOfDirectory 0x0
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#define LabelAttribute 0x8
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#define DirAttribute 0x10
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#define UnicodeAttribute 0x0F
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#define MaxDirs 128 //We cannnot have a directory tree more than 128 directories deep.
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//Flags for which types of FAT entries are kept by StripDir (see StripDir() below).
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#define KEEP_DIRECTORIES 0x01
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#define KEEP_FILES 0x02
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#define KEEP_DELDIRECTORIES 0x04
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#define KEEP_DELFILES 0x08
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typedef struct {
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HANDLE FatTreeHandles[MaxDirs]; //Handles to each FAT directory in our chain
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DIRSTRUC* pCurrentFatDir; //Pointer to the beginning of the current FAT directory
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DIRSTRUC* pCurrentFatDirEnd; //Pointer to the end of the current FAT directory
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DIRSTRUC* pCurrentEntry; //Pointer to the current entry in the current FAT directory
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DWORD dwCurrentEntryNum; //Number of the current entry in the current FAT directory
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DWORD CurrentEntryPos[MaxDirs]; //Number of the current entry in each level of the FAT chain
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TCHAR DirName[MaxDirs][MAX_PATH]; //Name of each directory at each level of our FAT chain
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DWORD dwCurrentLevel; //Which level we're at - 0 is root.
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BOOL bMovedUp; //If we moved up a directory, files have already been processed at this level.
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BOOL bProcessingFiles; //Whether or not we are processing files at this level (as compared to directories).
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LONGLONG llCurrentFatDirLcn[MaxDirs]; //LCN of the current FAT Directory
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} TREE_DATA;
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//extern TREE_DATA TreeData;
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//
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// Routine Declarations
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//
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//Gets data from the boot sector of a FAT drive. Initializes NextFatFile.
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BOOLEAN
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GetFatBootSector(
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);
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//Gets one at a time files on a FAT drive by directly traversing a directory tree.
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BOOL
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NextFatFile(
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);
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//Strips a directory of unused/unwanted entries. Called by NextFatFile.
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BOOL
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StripDir(
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TREE_DATA* pTreeData,
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DWORD dwFlags
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);
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//Reads a new directory from the disk. Called by NextFatFile.
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BOOL
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LoadDir(
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TREE_DATA* pTreeData
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);
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//Gets the unicode name for a file from its directory. Called by NextFatFile.
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BOOL
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GetUnicodeName(
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TREE_DATA* pTreeData,
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VString &unicodeName
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);
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//Gets the full unicode path for a file by traversing up it's directory tree. Called by NextFatFile.
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BOOL
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GetUnicodePath(
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IN TREE_DATA* pTreeData,
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OUT VString &unicodePath
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);
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