Module vfs_v2

VFS Version 2 - Modern Architecture Implementation

This module implements the new VFS architecture with clear separation of concerns and improved performance characteristics. The design is inspired by modern operating systems like Linux and provides:

Core Components

• VfsEntry: Path hierarchy “names” and “links” (similar to Linux dentry)

  • Provides caching for fast path resolution
  • Manages parent-child relationships in the VFS tree
  • Thread-safe with weak reference cleanup

• VfsNode: File “entity” interface (similar to Linux inode/BSD vnode)

  • Abstract representation of files, directories, and special files
  • Provides metadata access and type information
  • Enables clean downcasting for filesystem-specific operations

• FileSystemOperations: Driver API for filesystem implementations

  • Consolidated interface for all filesystem operations
  • Clean separation between VFS and filesystem drivers
  • Supports modern filesystems with complex features

Key Benefits

• Better Scalability: Improved caching and lookup performance
• Enhanced Extensibility: Clean interfaces for new filesystem types
• Standard OS Compatibility: Familiar patterns for kernel developers
• Improved Symbolic Link Resolution: Proper handling of symlink traversal
• Complex Filesystem Support: Better support for advanced features like overlays

Migration from VFS v1

VFS v2 provides backward compatibility while offering improved APIs. New code should use the v2 interfaces for better performance and maintainability.

Re-exports

pub use manager::VfsManager;

pub use manager::PathResolutionOptions;

pub use core::*;

Modules

core

Core VFS v2 types and traits

drivers

VFS v2 Filesystem Drivers

manager

VFS Manager v2 - Enhanced Virtual File System Management

mount_tree

VFS v2 Mount Tree Implementation

syscall

VFS v2 System Call Interface