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Source document: kernel/filesystem/vfs/index.rst
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VFS Virtual File System

In DragonOS, VFS acts as an adapter, hiding the differences between specific file systems and providing a unified file operation interface abstraction to the outside.

VFS is the core of the file system in DragonOS. It provides a set of unified file system interfaces, enabling DragonOS to support various different file systems. The main functions of VFS include:

Providing a unified file system interface
Providing mount and unmount mechanisms for file systems (MountFS)
Providing file abstraction (File)
Providing file system abstraction (FileSystem)
Providing IndexNode abstraction
Providing caching and synchronization mechanisms for file systems (not yet implemented)