composefs Rust crate

This is a Rust crate that builds on composefs-sys and also adds wrappers for invoking the external mkfs.composefs and composefs-info dump binaries.

lib.rs:

Rust composefs library

This crate builds on top of the core composefs tooling; it currently requires both the libcomposefs C library as well as the external executables mkcomposefs and composefs-info.

The core functionality exposed at the moment is just support for creating and parsing composefs "superblock" entries.