Fuchsia VFS implements bindings and protocol for serving filesystems on the Fuchsia platform. It implements both the remoteio protocol and an abstraciton around VFS serving.
Rust VFS and rust pseudo directories have rustdoc style documentation which can be generated with command like
fx gen-cargo //src/lib/storage/vfs/rust:vfs cargo +nightly doc --manifest-path src/lib/storage/vfs/rust/Cargo.toml --target x86_64-fuchsia --no-deps
The generated docs can be found in src/lib/storage/vfs/rust/target/x86_64-fuchsia/doc.
See also: cargo doc --help.