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//+-------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1995
//
// File: dshrdmem.h
//
// Contents: Contains structure definitons for the significant file
// extensions table classes which the ntsd extensions need
// to access. These ole classes cannot be accessed more
// cleanly because typically the members of interest are private.
//
// WARNING. IF THE REFERENCED OLE CLASSES CHANGE, THEN THESE
// DEFINITIONS MUST CHANGE!
//
// History: 06-01-95 BruceMa Created
//
//--------------------------------------------------------------------------
struct DWORDPAIR
{
DWORD dw1; // IID
DWORD dw2; // CLSID
};
struct GUIDPAIR
{
GUID guid1; // IID
GUID guid2; // CLSID
};
struct GUIDMAP
{
ULONG ulSize; // size of table
ULONG ulFreeSpace; // Free space in table
ULONG ulCntShort; // number of entries in the short list
ULONG ulCntLong; // number of entries in the long list
};
struct SShrdTblHdr
{
DWORD dwSeqNum; // update sequence number
ULONG OffsIIDTbl; // offset of the start of IID table
ULONG OffsPatTbl; // offset to start of file pattern table
ULONG OffsExtTbl; // offset to file extension table
ULONG OffsClsTbl; // offset to start of CLSID table
ULONG pad[1]; // pad to 8 byte boundary
};
struct SSharedMemoryBlock
{
HANDLE _hMem;
BYTE *_pbBase;
ULONG _culCommitSize; // current commit size
ULONG _culInitCommitSize; // initial commit size
BOOL _fCreated; // mem created vs already existed
BOOL _fReadWrite; // want read/write access
};
struct SSmMutex
{
BOOL _fCreated;
HANDLE _hMutex;
};
struct SPSClsidTbl
{
GUIDMAP * _pGuidMap; // ptr to table header
DWORDPAIR * _pShortList; // list of OLE style guids
GUIDPAIR * _pLongList; // list of non OLE style guids
};
struct STblHdr
{
ULONG ulSize; // size of pattern table
ULONG cbLargest; // largest pattern size
ULONG OffsStart; // offset to start of entries
ULONG OffsEnd; // offset to end of entries
};
struct SPatternEntry
{
CLSID clsid; // index of clsid the pattern maps to
ULONG ulEntryLen; // length of this entry
LONG lFileOffset; // offset in file where pattern begins
ULONG ulCb; // count bytes in pattern
BYTE abData[128]; // start of mask & pattern strings
};
struct SPatternTbl
{
STblHdr *_pTblHdr; // ptr to table header struct
BYTE *_pStart; // ptr to first entry in the memory block
};
struct SExtTblHdr
{
ULONG ulSize; // table size
ULONG cEntries; // count of entries in table
ULONG OffsStart; // offset to start of entries
ULONG OffsEnd; // offset to end of entries
};
struct SExtEntry
{
CLSID Clsid; // clsid the extension maps to
ULONG ulEntryLen; // length of this entry
WCHAR wszExt[1]; // start of filename extension
};
struct SFileExtTbl
{
SExtTblHdr *_pTblHdr; // ptr to table header structure
BYTE *_pStart; // ptr to first entry in the memory block
};
struct SDllShrdTbl
{
SSharedMemoryBlock _smb; // shared memory block
SSmMutex _mxs; // shared mutex
HANDLE _hRegEvent; // shared event handle
SPSClsidTbl _PSClsidTbl; // proxy stub clsid table
SPatternTbl _PatternTbl; // file pattern table
SFileExtTbl _FileExtTbl; // file extension table
SShrdTblHdr *_pShrdTblHdr; // shared mem copy of table
DWORD _dwSeqNum; // sequence number
};
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