def_iso.h

小型操作系统,以VC为开发环境,需要boachs调试

/***************************************************************************
**     File name   : def_iso.h
**     Author      : x.cheng
**     Create date :
**
**	   Comment:
**        head file for iso9660.filesystem
**
**     Revisions:
**     $Log: def_iso.h,v $
**     Revision 1.1  2005/08/14 09:50:23  x.cheng
**     add into repositories
**
**     Revision 1.1  2005/08/10 16:12:06  x.cheng
**     add into repositories
**
**
***************************************************************************/
#ifndef __DEF_ISO_H__
#define __DEF_ISO_H__



#define ISO9660_PRIMARY_VOL_DESCRIPTOR_POSITION		16	//logical block number for...
typedef struct PrimaryVolumeDecriptor_Struct
{
	unsigned char ucVolDecriptorType;		// 0x01
	char szStandardIdentifier[5];			// "CD001"
	unsigned char ucVolDecriptorVer;		// 0x01
	unsigned char ucReserved1;				// 0x0
	char aucSystemIdentifier[32];			//
	char aucVolIdentifier[32];				//
	unsigned char aucReserved2[8];			// 0x0...
	unsigned long ulVolSpaceSize;			// little endian double word
	unsigned long ulVolSpaceSize_2;			// big endian double word.
	unsigned char aucReserved3[32];			// 0x0...
	unsigned short uiVolSetSize;			// 1 little endian word
	unsigned short uiVolSetSize_2;			// 1 big endian word
	unsigned short ulVolSequenceNumber;		// 1 little endian word
	unsigned short ulVolSequenceNumber_2;	// 1 big endian word
	unsigned short ulLogicalBlockSize;		// 2048 little endian word
	unsigned short ulLogicalBlockSize_2;	// 2048 big endian word
	unsigned long ulPathTableSize;			//little endian double word
	unsigned long ulPathTableSize_2;		// big endian double word.
		//number of first sector in first little endian path table,
		//as a little endian double word
	unsigned long ulPathTableLocation;	
		//number of first sector in second little endian path table,
        //as a little endian double word, or zero if there is no
        //second little endian path table
	unsigned long ulPathTableLocationOptional;

	unsigned long ulPathTableLocation_2;	//as a big endian double word
	unsigned long ulPathTableLocationOptional_2;	//as a big endian double word

	unsigned char aucRootDirectory[34];
	unsigned char aucVolSetIdentifier[128];
	char szPublisherIdentifier[128];
	char szDataPreparerIdentifier[128];
	char szApplicationIdentifier[128];
	unsigned char aucCopyrightFileIdentifier[128];
	unsigned char aucAbstractFileIdentifier[37];
	unsigned char aucBibliographicFileIdentifier[37];
	unsigned char aucVolCreateDateTime[17];
	unsigned char aucVolModifyDateTime[17];
	unsigned char aucVolExpireDateTime[17];
	unsigned char aucVolEffectDateTime[17];
	unsigned char ucFileStructureVer;		// 0x01
	unsigned char ucReserved4;				// 0x0
	unsigned char aucApplicationUse[512];	// 0x0, normally
	unsigned char aucFutureStandardization[653];	// 0x0
} __attribute__ ((packed)) ts_PrimaryVolumeDescriptor;

////////////////////////////////////////////
//flag in dir entry
//  bit     value
//  ------  ------------------------------------------
//  0 (LS)  0 for a norma1 file, 1 for a hidden file
//  1       0 for a file, 1 for a directory
//  2       0 [1 for an associated file]
//  3       0 [1 for record format specified]
//  4       0 [1 for permissions specified]
//  5       0
//  6       0
//  7 (MS)  0 [1 if not the final record for the file]
#define ISO_HIDDEN	0x01
#define ISO_FOLDER	0x02
#define ISO_ISDIR(ucFlag)		( (ucFlag)&ISO_FOLDER )
#define ISO_ISFILE(ucFlag)		( !((ucFlag)&ISO_FOLDER) )
typedef struct Iso9660DirEntry_Struct
{
	unsigned char ucDirEntryLength;	//the number of bytes in the record (which must be even)
	unsigned char ucXarLenght;		// 0x0
		//number of the first sector of file data or directory
        //(zero for an empty file),
	unsigned long ulStartSector;	//as a little endian double word
	unsigned long ulStartSector_2;	//as a big endian double word
		//number of bytes of file data or length of directory,
        //excluding the extended attribute record
	unsigned long ulDataLength;		//as a little endian double word
	unsigned long ulDataLength_2;	//as a big endian double word
	unsigned char aucDateTime[7];	//1 number of years since 1900
									//1 month, where 1=January, 2=February, etc.
									//1 day of month, in the range from 1 to 31
									//1 hour, in the range from 0 to 23
									//1 minute, in the range from 0 to 59
									//1 second, in the range from 0 to 59
									//	(for DOS this is always an even number)
									//1 offset from Greenwich Mean Time, in 15-minute intervals,
									//	as a twos complement signed number, positive for time
									//	zones east of Greenwich, and negative for time zones
									//	west of Greenwich (DOS ignores this field)
	unsigned char ucFlag;
	unsigned char ucInterLeavedFileSize;	// 0
	unsigned char ucInterLeavedFileGap;		// 0
	unsigned short uiVolSequenceNumber;		// 1 little endian word
	unsigned short uiVolSequenceNumber_2;	// 1
	unsigned char ucIdentifierLength;		// 
	unsigned char aucFileIdentifier[ 0 ];
} __attribute__ ((packed)) ts_Iso9660DirEntry;

typedef struct Iso9660PathTable_Struct
{
	unsigned char ucDirIdentifierLength;		//1 for root dir
	unsigned char ucXarLength;		// 0x0 or true length for extend attribute record.
	unsigned short ulDirLocation;	//number of the first sector in the directory, little e..
	unsigned short uiParentDirNbInPathTable;	//0 for root dir
	unsigned char aucDirIdentifier[ 0 ];
} __attribute__ ((packed)) ts_Iso9660PathTable;


typedef struct Iso9660SuperInfo_Struct
{
	unsigned long ulBlockSize;
	unsigned long ulRootDirLocation;
	unsigned char *pucBuffer;
	unsigned short uiIndex;
} __attribute__ ((packed)) ts_Iso9660SuperInfo;

/*********************************function prototype*************************/
void Iso96Initialize(void);

void Is97Dir( void );
int iIs97Cd( char* szDir );

#endif /* end of  __DEF_ISO_H__ */