array descriptor

By the analysis of the source code of Linux s file system, not only the layout of the hard disk in the EXT2 file system but also the data structures related to EXT2 file system such as supper block, group descriptors, inode and directory structure detailed are described.

通过分析Linux文件系统源代码,给出了EXT2文件系统的硬盘布局,详细论述了超级块、组描述符、I节点、目录结构等与EXT2文件系统相关的数据结构,着重分析这些结构中的核心数据项以及它们之间的关系,并从编程的角度归纳了这些结构在文件系统中的作用。