HFS

vfile

\topenFile fileInfo;\tchar* data;

pointer

int bnum;\t\t\t\t //磁盘盘块号int dnum; //磁盘盘块内第几个字节

_hd

blocks[DISK_SIZE]

openFile

\tchar name[20]; \tchar attribute;\tint number; \tint length; \tint flag; \tpointer read; pointer write;

_hfs

char write_buf[BUF_SIZE];\tchar read_buf[BUF_SIZE];\tFAT fat;\topenFileTable OPT;

_cmd

vdir cur_dir;

inode

\tchar fileName[LEN_FILE_NAME];\tchar fileType[LEN_FILE_TYPE];\tchar attribute;//文件的属性字段\tchar blockId;\tchar fileLength;

硬件层

block

inode data[BLOCK_SIZE/sizeof(inode)];

vdir

openFile fileInfo;\tinode* data;\tint cnt;

文件管理信息与接口

文件系统层

FAT

\tblock* blocks[DISK_SIZE];\tchar next[DISK_SIZE];

openFileTable

\tvfile file[MAX_OPEN]; \tint length;

用户界面层