make_dev_credv
static int make_dev_credv(int flags, struct cdev **dres, struct cdevsw *devsw,
res = make_dev_credv(0, &dev, devsw, unit, NULL, uid, gid, mode, fmt,
res = make_dev_credv(0, &dev, devsw, unit, cr, uid, gid, mode, fmt, ap);
res = make_dev_credv(flags, &dev, devsw, unit, cr, uid, gid, mode,
res = make_dev_credv(flags, cdev, devsw, 0, cr, uid, gid, mode,