mruby-vfs is an in memory virtual unix filesystem that is used to back an mruby interpreter in the mruby crate.
mruby-vfs provides a fake implementation of unix file system-related functionality. It abstracts away details of certain common but complex operations (e.g., setting permissions) and makes it easier to test any file system-related logic without having to wait for slow I/O operations or coerce the file system into particular states.
mruby-vfs is a fork of filesystem crate at v0.4.4 copyright Isobel Redelmeier.