cd.h

winddk src目录下的文件系统驱动源码压缩!

/*++

Copyright (c) 1989-2000 Microsoft Corporation

Module Name:

    Cd.h

Abstract:

    This module defines the on-disk structure of the Cdfs file system.


--*/

#ifndef _CDFS_
#define _CDFS_

//
//  Sector size on Cdrom disks is hard-coded to 2048
//

#ifndef SECTOR_SIZE
#define SECTOR_SIZE                 (2048)
#endif

#define RAW_SECTOR_SIZE             (2352)
#define SECTOR_MASK                 (SECTOR_SIZE - 1)
#define INVERSE_SECTOR_MASK         ~(SECTOR_SIZE - 1)

#ifndef SECTOR_SHIFT
#define SECTOR_SHIFT                (11)
#endif

#define XA_SECTOR_SIZE              (2352)

//
//  Cdfs file id is a large integer.
//

typedef LARGE_INTEGER               FILE_ID;
typedef FILE_ID                     *PFILE_ID;

//
//  The following constants are values from the disk.
//

#define FIRST_VD_SECTOR             (16)

#define VOL_ID_LEN                  (5)
#define ESC_SEQ_LEN                 (3)

#define VERSION_1                   (1)

#define VD_TERMINATOR               (255)
#define VD_PRIMARY                  (1)
#define VD_SECONDARY                (2)

#define VOLUME_ID_LENGTH            (32)

//
//  Leave the following so that CdfsBoot.c will compile
//

#define CD_SECTOR_SIZE              (2048)

#define ISO_VOL_ID                  "CD001"
#define HSG_VOL_ID                  "CDROM"

#define ISO_ATTR_MULTI              0x0080
#define ISO_ATTR_DIRECTORY          0x0002

#define MIN_DIR_REC_SIZE        (sizeof( RAW_DIR_REC ) - MAX_FILE_ID_LENGTH)

#define RVD_STD_ID( r, i )      (i ?    r->StandardId       : \
                                        ((PRAW_HSG_VD) r)->StandardId )

#define RVD_DESC_TYPE( r, i )   (i ?    r->DescType         : \
                                        ((PRAW_HSG_VD) r)->DescType )

#define RVD_VERSION( r, i )     (i ?    r->Version          : \
                                        ((PRAW_HSG_VD) r)->Version )

#define RVD_LB_SIZE( r, i )     (i ?    r->LogicalBlkSzI    : \
                                        ((PRAW_HSG_VD) r)->LogicalBlkSzI )

#define RVD_VOL_SIZE( r, i )    (i ?    r->VolSpaceI      : \
                                        ((PRAW_HSG_VD) r)->VolSpaceI )

#define RVD_ROOT_DE( r, i )     (i ?    r->RootDe           : \
                                        ((PRAW_HSG_VD) r)->RootDe )

#define DE_FILE_FLAGS( iso, de ) (iso ? de->FlagsISO : de->FlagsHSG)

//
//  Data track flag for track entries in TOC
//

#define TOC_DATA_TRACK              (0x04)
#define TOC_LAST_TRACK              (0xaa)


//
//  There is considerable rearrangement of the volume descriptors for
//  ISO and HSG.  However, within each standard the same structure can
//  be used for both the primary and secondary descriptors.
//
//  Both of these structures are aligned correctly so that no
//  special macros will be needed to unpack them.
//

//
//  Declaration of length of root directory entry in volume descriptor
//

#define LEN_ROOT_DE                 (34)

//
//  Maximum length of file ID on the disk.  We allow file size beyond the ISO 9660
//  standard.
//

#define MAX_FILE_ID_LENGTH          (255)


typedef struct _RAW_ISO_VD {

    UCHAR       DescType;           // volume type: 1 = standard, 2 = coded
    UCHAR       StandardId[5];      // volume structure standard id = CD001
    UCHAR       Version;            // volume structure version number = 1
    UCHAR       VolumeFlags;        // volume flags
    UCHAR       SystemId[32];       // system identifier
    UCHAR       VolumeId[32];       // volume identifier
    UCHAR       Reserved[8];        // reserved 8 = 0
    ULONG       VolSpaceI;          // size of the volume in LBN's Intel
    ULONG       VolSpaceM;          // size of the volume in LBN's Motorola
    UCHAR       CharSet[32];        // character set bytes 0 = ASCII
    USHORT      VolSetSizeI;        // volume set size Intel
    USHORT      VolSetSizeM;        // volume set size Motorola
    USHORT      VolSeqNumI;         // volume set sequence number Intel
    USHORT      VolSeqNumM;         // volume set sequence number Motorola
    USHORT      LogicalBlkSzI;      // logical block size Intel
    USHORT      LogicalBlkSzM;      // logical block size Motorola
    ULONG       PathTableSzI;       // path table size in bytes Intel
    ULONG       PathTableSzM;       // path table size in bytes Motorola
    ULONG       PathTabLocI[2];     // LBN of 2 path tables Intel
    ULONG       PathTabLocM[2];     // LBN of 2 path tables Motorola
    UCHAR       RootDe[LEN_ROOT_DE];// dir entry of the root directory
    UCHAR       VolSetId[128];      // volume set identifier
    UCHAR       PublId[128];        // publisher identifier
    UCHAR       PreparerId[128];    // data preparer identifier
    UCHAR       AppId[128];         // application identifier
    UCHAR       Copyright[37];      // file name of copyright notice
    UCHAR       Abstract[37];       // file name of abstract
    UCHAR       Bibliograph[37];    // file name of bibliography
    UCHAR       CreateDate[17];     // volume creation date and time
    UCHAR       ModDate[17];        // volume modification date and time
    UCHAR       ExpireDate[17];     // volume expiration date and time
    UCHAR       EffectDate[17];     // volume effective date and time
    UCHAR       FileStructVer;      // file structure version number = 1
    UCHAR       Reserved3;          // reserved
    UCHAR       ResApp[512];        // reserved for application
    UCHAR       Reserved4[653];     // remainder of 2048 bytes reserved

} RAW_ISO_VD;
typedef RAW_ISO_VD *PRAW_ISO_VD;


typedef struct _RAW_HSG_VD {

    ULONG       BlkNumI;            // logical block number Intel
    ULONG       BlkNumM;            // logical block number Motorola
    UCHAR       DescType;           // volume type: 1 = standard, 2 = coded
    UCHAR       StandardId[5];      // volume structure standard id = CDROM
    UCHAR       Version;            // volume structure version number = 1
    UCHAR       VolumeFlags;        // volume flags
    UCHAR       SystemId[32];       // system identifier
    UCHAR       VolumeId[32];       // volume identifier
    UCHAR       Reserved[8];        // reserved 8 = 0
    ULONG       VolSpaceI;          // size of the volume in LBN's Intel
    ULONG       VolSpaceM;          // size of the volume in LBN's Motorola
    UCHAR       CharSet[32];        // character set bytes 0 = ASCII
    USHORT      VolSetSizeI;        // volume set size Intel
    USHORT      VolSetSizeM;        // volume set size Motorola
    USHORT      VolSeqNumI;         // volume set sequence number Intel
    USHORT      VolSeqNumM;         // volume set sequence number Motorola
    USHORT      LogicalBlkSzI;      // logical block size Intel
    USHORT      LogicalBlkSzM;      // logical block size Motorola
    ULONG       PathTableSzI;       // path table size in bytes Intel
    ULONG       PathTableSzM;       // path table size in bytes Motorola
    ULONG       PathTabLocI[4];     // LBN of 4 path tables Intel
    ULONG       PathTabLocM[4];     // LBN of 4 path tables Motorola
    UCHAR       RootDe[LEN_ROOT_DE];// dir entry of the root directory
    UCHAR       VolSetId[128];      // volume set identifier
    UCHAR       PublId[128];        // publisher identifier
    UCHAR       PreparerId[128];    // data preparer identifier
    UCHAR       AppId[128];         // application identifier
    UCHAR       Copyright[32];      // file name of copyright notice
    UCHAR       Abstract[32];       // file name of abstract
    UCHAR       CreateDate[16];     // volume creation date and time
    UCHAR       ModDate[16];        // volume modification date and time
    UCHAR       ExpireDate[16];     // volume expiration date and time
    UCHAR       EffectDate[16];     // volume effective date and time
    UCHAR       FileStructVer;      // file structure version number
    UCHAR       Reserved3;          // reserved
    UCHAR       ResApp[512];        // reserved for application
    UCHAR       Reserved4[680];     // remainder of 2048 bytes reserved

} RAW_HSG_VD;
typedef RAW_HSG_VD *PRAW_HSG_VD;


typedef struct _RAW_JOLIET_VD {

    UCHAR       DescType;           // volume type: 2 = coded
    UCHAR       StandardId[5];      // volume structure standard id = CD001
    UCHAR       Version;            // volume structure version number = 1
    UCHAR       VolumeFlags;        // volume flags
    UCHAR       SystemId[32];       // system identifier
    UCHAR       VolumeId[32];       // volume identifier
    UCHAR       Reserved[8];        // reserved 8 = 0
    ULONG       VolSpaceI;          // size of the volume in LBN's Intel
    ULONG       VolSpaceM;          // size of the volume in LBN's Motorola
    UCHAR       CharSet[32];        // character set bytes 0 = ASCII, Joliett Seq here
    USHORT      VolSetSizeI;        // volume set size Intel
    USHORT      VolSetSizeM;        // volume set size Motorola
    USHORT      VolSeqNumI;         // volume set sequence number Intel
    USHORT      VolSeqNumM;         // volume set sequence number Motorola
    USHORT      LogicalBlkSzI;      // logical block size Intel
    USHORT      LogicalBlkSzM;      // logical block size Motorola
    ULONG       PathTableSzI;       // path table size in bytes Intel
    ULONG       PathTableSzM;       // path table size in bytes Motorola
    ULONG       PathTabLocI[2];     // LBN of 2 path tables Intel
    ULONG       PathTabLocM[2];     // LBN of 2 path tables Motorola
    UCHAR       RootDe[LEN_ROOT_DE];// dir entry of the root directory
    UCHAR       VolSetId[128];      // volume set identifier
    UCHAR       PublId[128];        // publisher identifier
    UCHAR       PreparerId[128];    // data preparer identifier
    UCHAR       AppId[128];         // application identifier
    UCHAR       Copyright[37];      // file name of copyright notice
    UCHAR       Abstract[37];       // file name of abstract
    UCHAR       Bibliograph[37];    // file name of bibliography
    UCHAR       CreateDate[17];     // volume creation date and time
    UCHAR       ModDate[17];        // volume modification date and time
    UCHAR       ExpireDate[17];     // volume expiration date and time
    UCHAR       EffectDate[17];     // volume effective date and time
    UCHAR       FileStructVer;      // file structure version number = 1
    UCHAR       Reserved3;          // reserved
    UCHAR       ResApp[512];        // reserved for application
    UCHAR       Reserved4[653];     // remainder of 2048 bytes reserved

} RAW_JOLIET_VD;
typedef RAW_JOLIET_VD *PRAW_JOLIET_VD;

//
//  Macros to access the different volume descriptors.
//

#define CdRvdId(R,F) (                  \
    FlagOn( (F), VCB_STATE_HSG ) ?      \
    ((PRAW_HSG_VD) (R))->StandardId :   \
    ((PRAW_ISO_VD) (R))->StandardId     \
)

#define CdRvdVersion(R,F) (             \
    FlagOn( (F), VCB_STATE_HSG ) ?      \
    ((PRAW_HSG_VD) (R))->Version :      \
    ((PRAW_ISO_VD) (R))->Version        \