ctparam_copyin
error = ctparam_copyin((void *)arg, &kparam, flag, cmd);
error = ctparam_copyin((void *)arg, &kparam, flag, cmd);
error = ctparam_copyin((void *)arg, &kparam, flag, cmd);
int ctparam_copyin(const void *, ct_kparam_t *, int, int);