【作者】 吴娴；

【导师】 钱培德；

【作者基本信息】 苏州大学 ， 计算机应用技术， 2003， 硕士

【摘要】 嵌入式文件系统是嵌入式操作系统的重要组成部分。由于嵌入式设备存储介质的特殊性、电源供给的不稳定性和移动存储的安全性等要求，嵌入式文件系统的重要性在嵌入式操作系统中愈加明显。 Linux操作系统正在嵌入式开发领域稳步发展。本文首先分析了传统Linux的文件系统和目前流行的几种嵌入式文件系统的实现方案。接着，结合具体实验平台，提出了一种嵌入式Linux文件系统的总体架构。在移植了一个基于掌上设备的嵌入式Linux之后，本文介绍了针对基于MTD设备的Flash文件系统的一些实践方法。考虑到嵌入式设备资源的有限性，本文最后在这个嵌入式Linux文件系统的基础上，对其虚拟文件系统和物理文件系统做了相应的简化，使得它们更加符合嵌入式设备的要求。 本文在一个具体的平台上对嵌入式Linux的文件系统做了一些成功的实践，这些实践经验可以为今后的研究提供有益的帮助。在此基础上，我们还将继续完善这个文件系统，希望为今后这一方面的开发提供良好的技术支持。更多还原

【Abstract】 Embedded file system is playing an important role of the Embedded Operating System. Because of unstable power supply as well as the requirements on peculiarity of Embedded store medium and security in mobile applications higher and higher, the application of embedded system becomes wider than before. Therefore, the role of file system in the embedded system is critical.The design of Embedded System Linux evolves steadily and fast. After analyzing the traditional Linux file system and some popular embedded file system, this paper presents a schema of Embedded Linux File System. Then, we transplant an embedded Linux on a hand-held device and illustrate some practice of a Flash file system based on an MTD device. Since the storage capacity of embedded device is quite limited, we simplify the VFS and the physical file system so that this Embedded Linux File System can adapt to the embedded device better.We have modified, significantly and effectively, the Embedded Linux File System on an existing platform. On basis of the work that we have done, much more effort will be taken to make this file system schema more sophisticated so that we can provide effective technologic support for further expedition in this field.更多还原