嵌入式Linux下JFFS2文件系统的实现

文件系统是操作系统的重要组成部分之一,它为操作系统内核提供了存储和管理数据的机制,并为用户程序提供了对数据的访问接口。嵌入式文件系统不仅要具有一般文件系统的功能,还要满足嵌入式系统的特殊要求。JFFS2文件系统就是专门针对在嵌入式系统中得到广泛应用的Flash存储器而设计的,能很好地满足嵌入式系统的各项要求。文中介绍了嵌入式Linux系统下的Flash存储器和日志文件系统,并结合一个具体的实验平台,给出了JFFS2文件系统的移植和实现过程。通过在嵌入式Linux下使用JFFS2文件系统,可以为应用程序的开发奠定良好的基础。

Implementation of JFFS2 File System in Embedded Linux System

The file system is one of the important parts of an operation system.It provides a mechanism to store and manage the data for the kernel of operation system,and an access interface for the user applications.The embedded file system shall not only support the functions of a normal file system,but also satisfy the special requirements of the embedded systems.The JFFS2 file system is specifically designed for the flash devices which have been widely used in the embedded systems,and it can satisfy all kinds of requirements of the embedded systems.This paper introduces the flash memory and journalling file system in the embedded Linux system,and describes the process of porting and implementing of the JFFS2 file system based on an actual experimental platform.By using the JFFS2 file system in the embedded Linux system,can establish a good foundation for application development.