https://github.com/RT-Thread-packages/lwext4

ext2/ext3/ext4 filesystem library for microcontrollers
https://github.com/RT-Thread-packages/lwext4

ext2 ext3 ext4 lwext4 rt-thread

Last synced: 16 days ago
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ext2/ext3/ext4 filesystem library for microcontrollers

• Host: GitHub
• URL: https://github.com/RT-Thread-packages/lwext4
• Owner: RT-Thread-packages
• License: other
• Fork: true (gkostka/lwext4)
• Created: 2018-01-21T02:03:43.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2024-12-02T07:44:46.000Z (about 2 months ago)
• Last Synced: 2024-12-02T08:31:18.427Z (about 2 months ago)
• Topics: ext2, ext3, ext4, lwext4, rt-thread
• Language: C
• Homepage: https://github.com/gkostka/lwext4
• Size: 3.32 MB
• Stars: 6
• Watchers: 1
• Forks: 10
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG
  • License: LICENSE

Awesome Lists containing this project

• awesome-rt-thread - lwext4 - An excellent choice of ext2/3/4 filesystem for microcontrollers. (Packages / System)
• awesome-rt-thread - lwext4 - An excellent choice of ext2/3/4 filesystem for microcontrollers. (Packages / System)

README

        
# RT-Thread下的EXT4文件系统

这是一份RT-Thread下的EXT4文件系统实现，基于lwext4，针对RT-Thread的最新版本进行适配，后续也会适配到RT-Thread重构后的设备文件系统（DFS）上。

## lwext4文件系统

lwext4文件系统是一份针对MCU的ext2/3/4的文件系统实现，大多数代码源自 [helenos](http://helenos.org)，原许可协议是BSD许可协议。

lwext4中为了加入更多的扩展，添加了这两份文件，这两份文件是GPLv2许可协议。

* ext4_xattr.c

* ext4_extents.c

因为这两个文件GPLv2许可协议的缘故，会造成整体lwext4的文件污染。

原来的功能特性包括：

* filetypes: regular, directories, softlinks

* support for hardlinks

* multiple blocksize supported: 1KB, 2KB, 4KB ... 64KB

* little/big endian architectures supported

* multiple configurations (ext2/ext3/ext4)

* only C standard library dependency

* various CPU architectures supported (x86/64, cortex-mX, msp430 ...)

* small memory footprint

* flexible configurations

[原来的README.md文件](README_org.md)

## 移植到RT-Thread的修改

* lwext4中的分区表相关功能都未启用；

* lwext4中本身的块设备功能移除，都由dfs_ext_blockdev来实现；

* mkfs格式化文件系统都不会涉及到分区表的操作；