RNDGETSRCNAME
ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNAME, &rstnmbuf);
ret = (fp->f_ops->fo_ioctl)(fp, RNDGETSRCNAME, &rstnmbuf);
case RNDGETSRCNAME:
case RNDGETSRCNAME: { /* Get entropy sources by name. */