211 lines
3.9 KiB
C
211 lines
3.9 KiB
C
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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EtfsBoot.h
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Abstract:
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This module defines globally used procedure and data structures used
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by Etfs boot.
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Author:
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Steve Collins [stevec] 25-Nov-1995
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Revision History:
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--*/
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#if defined(ELTORITO)
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#ifndef _ETFSBOOT_
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#define _ETFSBOOT_
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//
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// The following constants are values from the disk.
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//
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#define ELTORITO_VD_SECTOR (16)
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#define ELTORITO_BRVD_SECTOR (17)
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#define ET_SYS_ID "EL TORITO SPECIFICATION"
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#define BRVD_VERSION_1 (1)
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#define VD_BOOTREC (0)
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typedef struct _RAW_ET_BRVD {
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UCHAR BrIndicator; // boot record indicator = 0
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UCHAR StandardId[5]; // volume structure standard id = "CD001"
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UCHAR Version; // descriptor version number = 1
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UCHAR BootSysId[32]; // boot system identifier = "EL TORITO SPECIFICATION"
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UCHAR Unused1[32]; // unused = 0
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ULONG BootCatPtr; // absolute pointer to first sector of boot catalog
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UCHAR Reserved[1973]; // unused = 0
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} RAW_ET_BRVD;
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typedef RAW_ET_BRVD *PRAW_ET_BRVD;
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//
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// The following macros are used to recover data from the different
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// volume descriptor structures.
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//
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#define RBRVD_BR_IND( r ) ( r->BrIndicator )
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#define RBRVD_STD_ID( r ) ( r->StandardId )
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#define RBRVD_VERSION( r ) ( r->Version )
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#define RBRVD_SYS_ID( r ) ( r->BootSysId )
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typedef struct _ETFS_STRUCTURE_CONTEXT {
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//
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// The following field is the sector offset of the start of
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// directory data.
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//
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ULONG RootDirSectorOffset;
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//
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// The following field is the start of the sector containing the
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// this directory.
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//
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ULONG RootDirDiskOffset;
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//
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// The following field is the size of the directory.
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//
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ULONG RootDirSize;
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//
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// The following field is the sector offset of the start of
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// directory data.
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//
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ULONG DirSectorOffset;
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//
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// The following field is the start of the sector containing the
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// this directory.
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//
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ULONG DirDiskOffset;
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//
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// The following field is the size of the directory.
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//
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ULONG DirSize;
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//
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// The following field indicates the size of the disk Logical Blocks.
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//
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ULONG LbnBlockSize;
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//
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// The following field indicates the number of logical blocks on the
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// disk.
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//
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ULONG LogicalBlockCount;
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//
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// The following indicates whether this is an Iso or Hsg disk.
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//
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BOOLEAN IsIsoVol;
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} ETFS_STRUCTURE_CONTEXT, *PETFS_STRUCTURE_CONTEXT;
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//
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// Define Etfs file context structure.
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//
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typedef struct _ETFS_FILE_CONTEXT {
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//
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// The following is the disk offset of the read position for the
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// start of the file. This may include the above number of non-file
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// bytes.
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//
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ULONG DiskOffset;
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//
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// The following field contains the size of the file, in bytes.
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//
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ULONG FileSize;
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//
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// The following field indicates whether this is a directory.
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//
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BOOLEAN IsDirectory;
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} ETFS_FILE_CONTEXT, *PETFS_FILE_CONTEXT;
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//
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// Define file I/O prototypes.
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//
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ARC_STATUS
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EtfsClose (
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IN ULONG FileId
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);
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ARC_STATUS
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EtfsOpen (
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IN PCHAR OpenPath,
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IN OPEN_MODE OpenMode,
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OUT PULONG FileId
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);
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ARC_STATUS
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EtfsRead (
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IN ULONG FileId,
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OUT PVOID Buffer,
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IN ULONG Length,
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OUT PULONG Count
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);
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ARC_STATUS
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EtfsSeek (
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IN ULONG FileId,
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IN PLARGE_INTEGER Offset,
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IN SEEK_MODE SeekMode
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);
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ARC_STATUS
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EtfsWrite (
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IN ULONG FileId,
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IN PVOID Buffer,
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IN ULONG Length,
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OUT PULONG Count
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);
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ARC_STATUS
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EtfsGetFileInformation (
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IN ULONG FileId,
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OUT PFILE_INFORMATION Buffer
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);
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ARC_STATUS
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EtfsSetFileInformation (
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IN ULONG FileId,
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IN ULONG AttributeFlags,
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IN ULONG AttributeMask
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);
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ARC_STATUS
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EtfsInitialize(
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VOID
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);
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#endif // _ETFSBOOT_
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#endif
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