unionfs_nodeget
int unionfs_nodeget(struct mount *mp, struct vnode *uppervp, struct vnode *lowervp, struct vnode *dvp, struct vnode **vpp, struct componentname *cnp);
error = unionfs_nodeget(mp, ump->um_uppervp, ump->um_lowervp,
error = unionfs_nodeget(ap->a_dvp->v_mount, uvp, NULLVP,
error = unionfs_nodeget(ap->a_dvp->v_mount, uvp, NULLVP,
error = unionfs_nodeget(dvp->v_mount, NULLVP, lvp, dvp, &vp,
error = unionfs_nodeget(dvp->v_mount, uvp, lvp, dvp, &vp, cnp);
error = unionfs_nodeget(ap->a_dvp->v_mount, vp, NULLVP,
error = unionfs_nodeget(ap->a_dvp->v_mount, vp, NULLVP,