Vnodes

In the VFS framework, every file or directory in active use is represented by a vnode object in kernel memory.

Each vnode has a standard

file attributes struct.

Vnode operations are

macros that vector to

filesystem-specific

procedures.

Generic vnode points at

filesystem-specific struct

(e.g., inode, rnode), seen

only by the filesystem.

Each specific file system maintains a cache of its resident vnodes.

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