// the Fd method has returned a blocking descriptor, and we want to
// retain that behavior because existing code expects it and depends on it.
//
//go:linkname net_newUnixFile net.newUnixFile
func net_newUnixFile(fd int, name string) *File {
	if fd < 0 {
		panic("invalid FD")
	}

	return newFile(fd, name, kindSock, true)
}

// newFileKind describes the kind of file to newFile.