err = __USEPORT (PROC, __proc_uname (port, uname));
if (err = __USEPORT (PROC, __proc_uname (port, uname))) return __hurd_fail (err);
uname (struct utsname *uname){  error_t err;  err = __USEPORT (PROC, __proc_uname (port, uname));  return err ? __hurd_fail (err) : 0;}