+#ifdef notyet
+ if (cnp->cn_namelen == 3 &&
+ cnp->cn_nameptr[2] == '.' &&
+ cnp->cn_nameptr[1] == '.' &&
+ cnp->cn_nameptr[0] == '.') {
+ dvp = *ap->a_vpp = LOWERVP(ap->a_dvp);
+ if (dvp == NULLVP)
+ return (ENOENT);
+ VREF(dvp);
+ VOP_LOCK(dvp);
+ if (!lockparent || !(cnp->cn_flags & ISLASTCN))
+ VOP_UNLOCK(ap->a_dvp);
+ return (0);
+ }
+#endif
+