仿真EXT2文件系统，使用一个txt文件模拟磁盘，最终实现对磁盘文件的创建、打开、读、写、关闭操作。其中涉及到inode、位图、超级块等概念与操作-A simple file system simulate EXT2, using a TXT file simulated disk, realizede the operationg for the disk file, such as create, open, read, write and close.Which involved some