计算机工程 ›› 2009, Vol. 35 ›› Issue (12): 256-258.doi: 10.3969/j.issn.1000-3428.2009.12.089

• 开发研究与设计技术 • 上一篇    下一篇

智能化GPRS DTU的嵌入式混合文件系统

刘庆敏1,田 岚1,何国圆1,于元明2   

  1. (1. 山东大学信息科学与工程学院,济南 250100;2. 烟台边防检查站,烟台 264000)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-06-20 发布日期:2009-06-20

Embedded Hybrid File System for Intelligent GPRS DTU

LIU Qing-min1, TIAN Lan1, HE Guo-yuan1, YU Yuan-ming2   

  1. (1. School of Information Science and Engineering, Shandong University, Jinan 250100; 2. Yantai Frontier Inspection Station, Yantai 264000)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-06-20 Published:2009-06-20

摘要: 针对GPRS数据终端单元(DTU)的智能化需求,提出一种Cramfs+JFFS2+Initramfs的嵌入式混合文件系统设计方案。采用自顶向下和自底向上相结合的设计方法,以dropbear为例介绍组件的选择和实现。在系统集成设计中,给出一种软链接技术替代复制的设计方法,并对脚本设计进行说明。该嵌入式文件系统已成为智能化GPRS DTU的核心模块,运行稳定。

关键词: 嵌入式Linux, 混合文件系统, 智能化

Abstract: Aiming at intelligent requirement of GPRS Data Terminal Unit(DTU), this paper proposes a design scheme for embedded hybrid file system Cramfs+JFFS2+Initramfs. It adopts combination of top-down analysis and bottom-up analysis, takes dropbear as the example to introduce component choosing method and implementation process. In the design of system integration, it gives a design tactics to adopt soft link technology instead of copying, and illustrates the script design. It has become a key module of intelligent GPRS DTU and it runs steadly.

Key words: embedded Linux, hybrid file system, intelligent

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