www.pudn.com > fat16 and fat32 file system.rar > iso9660.h

/*H************************************************************************** 
* NAME:         iso9660.h          
*---------------------------------------------------------------------------- 
* Copyright (c) 2003 Atmel. 
*---------------------------------------------------------------------------- 
* RELEASE:      snd1c-refd-nf-4_0_3       
* REVISION:     1.3      
*---------------------------------------------------------------------------- 
* PURPOSE: 
* ISO filesystem basic functions 
*****************************************************************************/ 
 
#ifndef _ISO9660_ 
#define _ISO9660_ 
 
 
#define TYPE_BOOT_RECORD              0x00 
#define TYPE_PRIMARY_VD               0x01 
#define TYPE_SUPPLEMENTARY_VD         0x02 
#define TYPE_PARTITION_VD             0x03 
#define TYPE_VOLUME_SET_TERMINATOR    0xFF 
 
#define ATTR_ISO_DIR                  0x02 
 
#define DEL_RET_OK                        (Byte)(0) 
#define DEL_RET_NO_MORE_FILE              (Byte)(1) 
#define DEL_RET_ERROR_DIR                 (Byte)(2) 
 
/* maximum number of LFN entries */ 
#define MAX_LFN_ENTRIES   ((Byte)16)        
/* maximum file name length      */ 
#define MAX_FILENAME_LEN  ((Byte)(12 + (MAX_LFN_ENTRIES - 1) * 13 + 15 + 1 + 1))       
#define MAX_DIRECTORY_FILE ((Uint16)512)    /* maximum number of file in    */ 
 
 
/******************************************************************************* 
* PURPOSE:  
* Directory Record Structure 
*******************************************************************************/ 
typedef struct 
{ 
  Byte length;            /* length of the record     */ 
  Uint32 extend_location; /* location of the extend   */ 
  Uint32 data_length;     /* length of directory/file */ 
} iso_DirectoryRecord; 
 
/******************************************************************************* 
* PURPOSE: 
* Volume Descriptor Record Structure 
*******************************************************************************/ 
typedef struct  
{ 
  Uint16 logical_block_size;  /* Size of the logical block usually 2048 bytes */ 
  iso_DirectoryRecord root;   /* root directory record                        */ 
  Uint32 volume_size;         /* volume size                                  */ 
} iso_VolumeDescriptor; 
 
/******************************************************************************* 
* PURPOSE: 
* ISO cache of parent directory and current file or directory  
*******************************************************************************/ 
typedef struct  
{ 
  Byte attributes; 
  Uint32 extend_location; 
  Uint32 extend_size; 
  Uint16 entry_len; 
} iso_file; 
 
typedef struct 
{ 
  iso_file info; 
  iso_file parent; 
} iso_cache; 
 
 
/******************************************************************************* 
* PURPOSE:  
* ISO file system functions (fs/iso9660/iso9660.c) 
*******************************************************************************/ 
bit     iso_install(void); 
bit     iso_read_volume_descriptor(Uint32); 
bit     iso_goto_first(void); 
bit     iso_goto_next(void); 
bit     iso_goto_prev(void); 
Byte    iso_check_ext(void); 
bit     iso_goto_subdir(void); 
bit     iso_goto_parent_dir(void); 
bit     iso_fopen(void); 
Byte    iso_fgetc(void); 
bit     iso_feof(void); 
bit     iso_feob(void); 
void    iso_fclose(void); 
char    pdata  *iso_get_name(void); 
bit     iso_fseek(Int16); 
Uint32  iso_file_get_pos (void); 
void    iso_save_file_pos (void); 
bit     iso_fseek_abs (Uint32 offset); 
bit     iso_get_directory(Byte,bit);    
#define iso_goto_subdir(id)  iso_get_directory(id, FALSE)  
bit     iso_goto_last (void); 
 
 
#endif /*_ISO9660_*/