File system Software Architecture 文件系统的结构 User Program 堆文件顺序文件索引顺序文件索引文件直接文件 逻辑文件Pie| Sequential Indexed. Indexed Hashed Sequential Logical / o Basic lo supervisor(管理程序) Basic File system Disk device driver Tape Device DriverFile System Software Architecture 文件系统的结构 Pile Sequential Indexed Sequential Indexed Hashed Logical I/O Basic I/O Supervisor(管理程序) Basic File System Disk Device Driver Tape Device Driver User Program 堆文件 顺序文件 索引顺序文件 索引文件 直接文件 逻辑文件