kernel::fs::vfs_v2

Module drivers

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VFS v2 Filesystem Drivers

This module contains all filesystem drivers that implement the VFS v2 FileSystemOperations interface. Each driver provides a specific filesystem type with its own characteristics and use cases.

§Available Drivers

  • tmpfs: Memory-based temporary filesystem with optional size limits
  • cpiofs: Read-only CPIO archive filesystem for initramfs
  • overlayfs: Union/overlay filesystem combining multiple layers
  • initramfs: Helper module for mounting initramfs during boot
  • devfs: Device filesystem that automatically exposes all registered devices

§Adding New Drivers

To add a new filesystem driver:

  1. Create a new module implementing FileSystemOperations
  2. Implement VfsNode for your filesystem’s node type
  3. Add a driver struct implementing FileSystemDriverV2
  4. Register the driver in the driver manager during initialization

§Driver Registration

All drivers in this module automatically register themselves using the driver_initcall! macro during kernel initialization.

Modules§

cpiofs
CpioFS v2 - CPIO filesystem implementation for initramfs
devfs
DevFS - Device filesystem implementation
initramfs
Initramfs mounting functionality (VFS v2)
overlayfs
OverlayFS v2 - Overlay filesystem implementation for VFS v2
tmpfs
TmpFS v2 - Memory-based filesystem implementation