Filesystem overview

This chapter covers the filesystem architecture. The kernel currently supports ext2 with the following status:

Current state:

• ✓ Basic file operations (create, read, write, delete)
• ✓ Directory operations (mkdir, rmdir, chdir, getcwd)
• ✓ Path resolution (absolute and relative paths)
• ✗ Symbolic links
• ✗ Hard links
• ✗ Multiple filesystem support

We will explore three key layers:

1. Block Devices - Hardware abstraction for disk access
2. VFS Layer - Virtual filesystem providing a unified interface
3. ext2 Implementation - Filesystem driver and on-disk format

Each section covers design decisions & implementation details of my kernel.