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90 lines
1.9 KiB
90 lines
1.9 KiB
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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Uhpfs.hxx
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Abstract:
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This module contains declarations for HPFS file-system constants
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and for the global data used within UHPFS.DLL.
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Author:
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Bill McJohn (BillMc) 31-May-1990
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Environment:
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ULIB, User Mode
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--*/
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#if !defined ( _UHPFS_INCLUDED_ )
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#define _UHPFS_INCLUDED_
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#define MAX_NUM_BITMAPS 512
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#define BITMAP_SIZE 2048
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#define MAX_DBS_PER_DIRBAND 4000
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#define SPB 4
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#define SPARE_DIR_BLKS 20
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CONST StartOfSuperArea = 0;
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CONST EndOfSuperArea = 19;
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CONST cbSector = 512; // The only allowable sector size for HPFS drives.
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// Number of sectors for various on-disk structures:
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CONST SectorsPerBitmap = 4;
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CONST SectorsPerDirblk = 4;
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CONST SectorsPerAlsec = 1;
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CONST SectorsPerFnode = 1;
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CONST SectorsPerCPInfoSector = 1;
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CONST SectorsPerCPDataSector = 1;
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// Signatures:
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CONST ULONG SparesBlockSignature1 = 0xf9911849;
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CONST ULONG SparesBlockSignature2 = 0xfa5229c5;
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CONST ULONG FnodeSignature = 0xF7E40AAE;
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CONST ULONG DirblkSignature = 0x77E40AAE;
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CONST ULONG AlsecSignature = 0x37E40AAE;
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CONST ULONG ValM1 = ((('M'-'A')*40+('A'-'A'))*40+'H'-'A');
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CONST ULONG ValM2 = ((('M'-'A')*40+('G'-'A'))*40+'H'-'A');
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CONST ULONG CPInfoSignature = ValM1*40*40*40+ValM2;
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CONST ULONG CPDataSignature = 0x40000000L+ValM1*40*40*40+ValM2;
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// Set up the UHPFS_EXPORT macro for exporting from UHPFS (if the
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// source file is a member of UHPFS) or importing from UHPFS (if
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// the source file is a client of UHPFS).
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//
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#if defined ( _AUTOCHECK_ )
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#define UHPFS_EXPORT
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#elif defined ( _UHPFS_MEMBER_ )
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#define UHPFS_EXPORT __declspec(dllexport)
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#else
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#define UHPFS_EXPORT __declspec(dllimport)
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#endif
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#if DBG==1
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// this global buffer is used to support printf-style debug output
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// (using sprintf).
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extern CHAR DbgPrintBuffer[];
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#endif
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#endif // _UHPFS_INCLUDED_
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