tg-easy-fs

A simple filesystem implementation for the rCore tutorial operating system.

Overview

This crate provides a lightweight filesystem (EasyFS) implementation designed for educational purposes. It features a classic Unix-like filesystem structure with inodes, block caching, and a simple yet functional virtual filesystem interface.

Features

• Block-based storage: Uses 512-byte blocks as the fundamental storage unit
• Inode-based structure: Unix-like inode system for file metadata management
• Block caching: Efficient block cache layer for improved I/O performance
• Bitmap allocation: Bitmap-based block and inode allocation
• no_std compatible: Designed for bare-metal kernel environments

Usage

This crate is primarily used within the rCore tutorial kernel (ch6+) for file operations.

use tg_easy_fs::{BlockDevice, EasyFileSystem, Inode};

// Implement BlockDevice trait for your storage device
// Then create and use the filesystem

Architecture

• BlockDevice - Trait for block device abstraction
• EasyFileSystem - Main filesystem structure
• Inode - Virtual filesystem node interface
• BlockCache - Block caching layer

License

Licensed under either of MIT license or Apache License, Version 2.0 at your option.