一级文件系统程序

实现一个一级文件系统程序：根据前面的提示设计一个一级（单用户）文件系统程序，要求实现以下功能：

①提供文件创建/删除接口命令create/delete、目录创建/删除接口命令mkdir/rmdir、显示目录内容命令ls；

②创建的文件不要求格式和内容。

-A file system is a file system implements a program: According to the above tips to design a one (single-user) file system procedures required to achieve the following functions: ① provides file create/delete interface commands create/delete, directory creation/deletion Interface command mkdir/rmdir, display the directory contents of the command ls　② created file is not required format and content.