EPIOCGPARAMS
case EPIOCGPARAMS:
case EPIOCGPARAMS:
ret = ioctl(self->fd, EPIOCGPARAMS, &self->params);
ret = ioctl(self->fd, EPIOCGPARAMS, self->invalid_params);
ret = ioctl(self->fd, EPIOCGPARAMS, &self->params);
int invalid_ioctl = EPIOCGPARAMS + 10;
ret = ioctl(self->invalid_fd, EPIOCGPARAMS, &self->params);