vfs

type Entry interface {
	// Virtual returns the virtual file of this entry.
	Virtual() string
	// Actual returns the actual file mapped by this virtual file.
	Actual() string
	// Attr returns the attrs of this entry.
	Attr() (*fuse.Attr, error)
	// Readonly returns true if this virtual file is readonly.
	Readonly() bool
	// Parent returns the parent entry.
	Parent() Entry
	// Children returns the child entries.
	Children() map[string]Entry
}

type FileSystem interface {
	// MatchPath finds the actual file for the given virtual file, returning
	// the deepest Entry object matched in the virtual file system and the
	// remaining unmatched paths.
	MatchPath(virtual string) (Entry, []string)

	// Track tracks the mapping from virtual file to the actual file.
	Track(virtual, actual string, readonly bool)

	// Untrack removes the mapping from the given virtual file.
	Untrack(virtual string) error

	String() string
}