203 lines
6 KiB
C
203 lines
6 KiB
C
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//
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// REGFINFO.H
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//
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// Copyright (C) Microsoft Corporation, 1995
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//
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#ifndef _REGFINFO_
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#define _REGFINFO_
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#define PAGESHIFT 12
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#define PAGESIZE (1 << PAGESHIFT)
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#define PAGEMASK (PAGESIZE - 1)
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#define KEYNODE_BLOCK_SHIFT 10
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#define KEYNODES_PER_BLOCK (1 << KEYNODE_BLOCK_SHIFT)
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#define KEYNODE_BLOCK_MASK (KEYNODES_PER_BLOCK-1)
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#define KEYNODES_PER_PAGE (PAGESIZE / sizeof(KEYNODE))
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#define KN_INDEX_IN_BLOCK(i) ((i) & KEYNODE_BLOCK_MASK)
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#define KN_BLOCK_NUMBER(i) ((UINT) ((i) >> KEYNODE_BLOCK_SHIFT))
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typedef struct _KEYNODE_BLOCK {
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KEYNODE aKN[KEYNODES_PER_BLOCK];
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} KEYNODE_BLOCK, FAR* LPKEYNODE_BLOCK;
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#define KEYNODES_PER_PAGE (PAGESIZE / sizeof(KEYNODE))
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typedef struct _W95KEYNODE_BLOCK {
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W95KEYNODE aW95KN[KEYNODES_PER_BLOCK];
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} W95KEYNODE_BLOCK, FAR* LPW95KEYNODE_BLOCK;
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typedef struct _KEYNODE_BLOCK_INFO {
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LPKEYNODE_BLOCK lpKeynodeBlock;
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BYTE Flags; // KBDF_* bits
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BYTE LockCount;
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} KEYNODE_BLOCK_INFO, FAR* LPKEYNODE_BLOCK_INFO;
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#define KBIF_ACCESSED 0x01 // Recently accessed
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#define KBIF_DIRTY 0x02 // Must rewrite to disk
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// Number of extra KEYNODE_BLOCK_INFO structures to alloc on top of the block
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// count already in the file. Reduces heap fragmentation in real-mode.
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#define KEYNODE_BLOCK_INFO_SLACK_ALLOC 4
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#ifdef WIN32
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typedef UINT KEY_RECORD_TABLE_ENTRY;
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#else
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typedef WORD KEY_RECORD_TABLE_ENTRY;
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#endif
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typedef KEY_RECORD_TABLE_ENTRY FAR* LPKEY_RECORD_TABLE_ENTRY;
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#define NULL_KEY_RECORD_TABLE_ENTRY ((KEY_RECORD_TABLE_ENTRY) 0)
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#define IsNullKeyRecordTableEntry(kri) ((kri) == NULL_KEY_RECORD_TABLE_ENTRY)
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typedef struct _DATABLOCK_INFO {
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LPDATABLOCK_HEADER lpDatablockHeader;
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LPKEY_RECORD_TABLE_ENTRY lpKeyRecordTable;
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UINT BlockSize; // cached from datablock header
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UINT FreeBytes; // cached from datablock header
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UINT FirstFreeIndex; // cached from datablock header
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LONG FileOffset;
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BYTE Flags; // DIF_* bits
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BYTE LockCount;
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} DATABLOCK_INFO, FAR* LPDATABLOCK_INFO;
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#define DIF_PRESENT 0x01 // In memory
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#define DIF_ACCESSED 0x02 // Recently accessed
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#define DIF_DIRTY 0x04 // Must rewrite to disk
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#define DIF_EXTENDED 0x08 // Has grown in size
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// Number of extra DATABLOCK_INFO structures to alloc on top of the block count
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// already in the file. Reduces heap fragmentation in real-mode.
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#define DATABLOCK_INFO_SLACK_ALLOC 4
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// When we create or extend a datablock, try to keep it on page boundaries.
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#define DATABLOCK_GRANULARITY 4096
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#define RgAlignBlockSize(size) \
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(((size) + (DATABLOCK_GRANULARITY - 1)) & ~(DATABLOCK_GRANULARITY - 1))
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typedef struct _FILE_INFO {
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struct _FILE_INFO FAR* lpNextFileInfo;
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#ifdef WANT_HIVE_SUPPORT
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struct _HIVE_INFO FAR* lpHiveInfoList;
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#endif
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#ifdef WANT_NOTIFY_CHANGE_SUPPORT
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#ifdef WANT_HIVE_SUPPORT
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struct _FILE_INFO FAR* lpParentFileInfo;
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#endif
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struct _NOTIFY_CHANGE FAR* lpNotifyChangeList;
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#endif
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LPKEYNODE_BLOCK_INFO lpKeynodeBlockInfo;
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UINT KeynodeBlockCount;
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UINT KeynodeBlockInfoAllocCount;
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DWORD CurTotalKnSize; // Normally = to FileKnSize unless grown
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LPDATABLOCK_INFO lpDatablockInfo;
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UINT DatablockInfoAllocCount;
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FILE_HEADER FileHeader;
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KEYNODE_HEADER KeynodeHeader;
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WORD Flags; // FI_* bits
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char FileName[ANYSIZE_ARRAY];
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} FILE_INFO, FAR* LPFILE_INFO;
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#define FI_DIRTY 0x0001 // Must rewrite to disk
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#define FI_KEYNODEDIRTY 0x0002 //
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#define FI_EXTENDED 0x0004 //
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#define FI_VERSION20 0x0008 //
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#define FI_FLUSHING 0x0010 // Currently flushing file
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#define FI_SWEEPING 0x0020 // Currently sweeping file
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#define FI_VOLATILE 0x0040 // File has no backing store
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#define FI_READONLY 0x0080 // File cannot be modified
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#define FI_REPLACEMENTEXISTS 0x0100 // RegReplaceKey called on file
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typedef struct _HIVE_INFO {
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struct _HIVE_INFO FAR* lpNextHiveInfo;
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LPFILE_INFO lpFileInfo;
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UINT NameLength;
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BYTE Hash;
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char Name[ANYSIZE_ARRAY];
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} HIVE_INFO, FAR* LPHIVE_INFO;
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#define CFIN_PRIMARY 0x0000 // FHT_PRIMARY header type
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#define CFIN_SECONDARY 0x0001 // FHT_SECONDARY header type
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#define CFIN_VOLATILE 0x0002 // File has no backing store
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#define CFIN_VERSION20 0x0004 // Use compact keynode form
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int
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INTERNAL
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RgCreateFileInfoNew(
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LPFILE_INFO FAR* lplpFileInfo,
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LPCSTR lpFileName,
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UINT Flags
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);
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int
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INTERNAL
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RgCreateFileInfoExisting(
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LPFILE_INFO FAR* lplpFileInfo,
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LPCSTR lpFileName
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);
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int
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INTERNAL
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RgInitRootKeyFromFileInfo(
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HKEY hKey
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);
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int
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INTERNAL
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RgDestroyFileInfo(
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LPFILE_INFO lpFileInfo
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);
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int
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INTERNAL
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RgFlushFileInfo(
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LPFILE_INFO lpFileInfo
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);
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int
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INTERNAL
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RgSweepFileInfo(
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LPFILE_INFO lpFileInfo
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);
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typedef int (INTERNAL* LPENUMFILEINFOPROC)(LPFILE_INFO);
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VOID
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INTERNAL
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RgEnumFileInfos(
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LPENUMFILEINFOPROC lpEnumFileInfoProc
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);
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#define RgIndexKeynodeBlockInfoPtr(lpfi, index) \
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((LPKEYNODE_BLOCK_INFO) (&(lpfi)-> lpKeynodeBlockInfo[index]))
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#define RgIndexDatablockInfoPtr(lpfi, index) \
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((LPDATABLOCK_INFO) (&(lpfi)-> lpDatablockInfo[index]))
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#define RgIndexKeyRecordPtr(lpdi, index) \
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((LPKEY_RECORD) ((LPBYTE)(lpdi)-> lpDatablockHeader + (lpdi)-> lpKeyRecordTable[(index)]))
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BOOL
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INTERNAL
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RgIsValidFileHeader(
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LPFILE_HEADER lpFileHeader
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);
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BOOL
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INTERNAL
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RgIsValidKeynodeHeader(
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LPKEYNODE_HEADER lpKeynodeHeader
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);
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BOOL
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INTERNAL
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RgIsValidDatablockHeader(
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LPDATABLOCK_HEADER lpDatablockHeader
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);
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extern LPFILE_INFO g_RgFileInfoList;
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#endif // _REGFINFO_
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