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elua/inc/romfs.h
2008-11-24 13:48:46 +00:00

45 lines
1017 B
C

// Read-only ROM filesystem
#ifndef __FS_H__
#define __FS_H__
#include "type.h"
#include "devman.h"
// Maximum length of a filename in the filesystem
#define MAX_FNAME_LENGTH 14
/*******************************************************************************
The Read-Only "filesystem" resides in a contiguous zone of memory, with the
following structure, repeated for each file:
Filename: ASCIIZ, max length is MAX_FNAME_LENGTH defined here, empty if last file
File size: (2 bytes)
File data: (file size bytes)
*******************************************************************************/
enum
{
FS_FILE_NOT_FOUND,
FS_FILE_OK
};
// This is the function used to read a byte at the given address from the file
// system
typedef u8 ( *p_read_fs_byte )( u16 );
// A small "FILE" structure
typedef struct
{
u16 baseaddr;
u16 offset;
u16 size;
p_read_fs_byte p_read_func;
} FS;
// FS functions
DM_DEVICE* romfs_init();
u16 romfs_get_dir_entry(u16 offset, char *fname, int *fsize);
#endif