var os.ErrClosed

4 uses

	os (current package)
		error.go#L24: 	ErrClosed     = fs.ErrClosed     // "file already closed"
		file.go#L454: 		err = ErrClosed
		file_unix.go#L335: 			e = ErrClosed
		root_openat.go#L45: 		return ErrClosed