filesystem

type ControlFile interface {
	File
	Control(op int, arg any) error
}

type Dir interface {
	DirFile
	OpenFile(name string, flag FileFlag, perm fs.FileMode) (File, error)
	Mkdir(name string, perm fs.FileMode) error
}

type DirFS interface {
	FS
	ReadDir(name string) ([]fs.DirEntry, error)
	Mkdir(name string, perm fs.FileMode) (DirFS, error)
}

type DirFile interface {
	File
	ReadDir(n int) ([]fs.DirEntry, error)
}

type FS interface {
	fs.FS
	OpenFile(name string, flag FileFlag, perm fs.FileMode) (File, error)
}

type File interface {
	Close() error
	Stat() (fs.FileInfo, error)
}

type FileFlag int

type ReadFile interface {
	File
	Read(b []byte) (n int, err error)
}

type ReadlinkDir interface {
	DirFile
	Readlink(name string) (string, error)
}

type ReadlinkFS interface {
	DirFS
	Readlink(name string) (string, error)
}

type VirtualFS interface {
	ReadlinkFS
	Link(name string, handle FS) error
}

type WriteFile interface {
	File
	Write(b []byte) (n int, err error)
}