98 	struct vnode   *dvp, *udvp, *ldvp, *vp, *uvp, *lvp, *dtmpvp;  in unionfs_lookup()  local
117 	vp = uvp = lvp = NULLVP;  in unionfs_lookup()
281 		uerror = VOP_LOOKUP(udvp, &uvp, cnp);  in unionfs_lookup()
283 			if (uvp != NULLVP)  in unionfs_lookup()
284 				VOP_UNLOCK(uvp);  in unionfs_lookup()
290 			if (udvp == uvp) {	/* is dot */  in unionfs_lookup()
293 				vrele(uvp);  in unionfs_lookup()
299 			} else if (uvp != NULLVP)  in unionfs_lookup()
300 				VOP_UNLOCK(uvp);  in unionfs_lookup()
326 	if (uvp == NULLVP && lvp == NULLVP) {  in unionfs_lookup()
334 	if (uvp != NULLVP && lvp != NULLVP && uvp->v_type != lvp->v_type) {  in unionfs_lookup()
385 		if (uvp != NULLVP)  in unionfs_lookup()
391 		error = unionfs_nodeget(dvp->v_mount, uvp, lvp,  in unionfs_lookup()
412 	if (uvp != NULLVP)  in unionfs_lookup()
413 		vrele(uvp);  in unionfs_lookup()
643 	struct vnode   *uvp;  in unionfs_open()  local
676 	uvp = unp->un_uppervp;  in unionfs_open()
683 			targetvp = uvp;  in unionfs_open()
692 		if (uvp == NULLVP) {  in unionfs_open()
700 				targetvp = uvp = unp->un_uppervp;  in unionfs_open()
704 			targetvp = uvp;  in unionfs_open()
707 	if (targetvp == uvp && uvp->v_type == VDIR && lvp != NULLVP &&  in unionfs_open()
710 	else if (targetvp == lvp && uvp != NULLVP)  in unionfs_open()
735 	if (targetvp == uvp) {  in unionfs_open()
751 				unionfs_forward_vop_start(uvp, &lkflags);  in unionfs_open()
752 				VOP_CLOSE(uvp, ap->a_mode, cred, td);  in unionfs_open()
753 				if (unionfs_forward_vop_finish(vp, uvp, lkflags))  in unionfs_open()
788 	struct vnode   *uvp;  in unionfs_close()  local
816 	uvp = unp->un_uppervp;  in unionfs_close()
825 		if (uvp != NULLVP)  in unionfs_close()
826 			ovp = uvp;  in unionfs_close()
830 		ovp = uvp;  in unionfs_close()
834 	if (ovp == lvp && uvp != NULLVP) {  in unionfs_close()
859 	if (ovp == uvp) {  in unionfs_close()
950 	struct vnode   *uvp;  in unionfs_access()  local
963 	uvp = unp->un_uppervp;  in unionfs_access()
981 	if (uvp != NULLVP) {  in unionfs_access()
982 		error = VOP_ACCESS(uvp, accmode, ap->a_cred, td);  in unionfs_access()
1031 	struct vnode   *uvp;  in unionfs_getattr()  local
1043 	uvp = unp->un_uppervp;  in unionfs_getattr()
1047 	if (uvp != NULLVP) {  in unionfs_getattr()
1048 		if ((error = VOP_GETATTR(uvp, ap->a_vap, ap->a_cred)) == 0)  in unionfs_getattr()
1086 	struct vnode   *uvp;  in unionfs_setattr()  local
1098 	uvp = unp->un_uppervp;  in unionfs_setattr()
1109 	if (uvp == NULLVP && lvp->v_type == VREG) {  in unionfs_setattr()
1114 		uvp = unp->un_uppervp;  in unionfs_setattr()
1117 	if (uvp != NULLVP) {  in unionfs_setattr()
1119 		unionfs_forward_vop_start(uvp, &lkflags);  in unionfs_setattr()
1120 		error = VOP_SETATTR(uvp, vap, ap->a_cred);  in unionfs_setattr()
1121 		unionfs_forward_vop_finish(ap->a_vp, uvp, lkflags);  in unionfs_setattr()
1267 	struct vnode   *uvp;  in unionfs_remove()  local
1287 	uvp = unp->un_uppervp;  in unionfs_remove()
1295 	if (uvp != NULLVP) {  in unionfs_remove()
1301 		    uvp, &uvp_lkflags);  in unionfs_remove()
1302 		error = VOP_REMOVE(udvp, uvp, cnp);  in unionfs_remove()
1304 		    ap->a_vp, uvp, uvp_lkflags);  in unionfs_remove()
1321 	struct vnode   *uvp;  in unionfs_link()  local
1335 	uvp = NULLVP;  in unionfs_link()
1355 	uvp = unp->un_uppervp;  in unionfs_link()
1360 		    uvp, &uvp_lkflags);  in unionfs_link()
1361 		error = VOP_LINK(udvp, uvp, cnp);  in unionfs_link()
1363 		    ap->a_vp, uvp, uvp_lkflags);  in unionfs_link()
1631 	struct vnode   *uvp;  in unionfs_mkdir()  local
1660 		error = VOP_MKDIR(udvp, &uvp, cnp, ap->a_vap);  in unionfs_mkdir()
1667 			VOP_UNLOCK(uvp);  in unionfs_mkdir()
1669 			error = unionfs_nodeget(dvp->v_mount, uvp, NULLVP,  in unionfs_mkdir()
1671 			vrele(uvp);  in unionfs_mkdir()
1674 			vput(uvp);  in unionfs_mkdir()
1692 	struct vnode   *uvp;  in unionfs_rmdir()  local
1707 	uvp = unp->un_uppervp;  in unionfs_rmdir()
1713 	if (udvp == uvp)  in unionfs_rmdir()
1716 	if (uvp != NULLVP) {  in unionfs_rmdir()
1759 		    uvp, &uvp_lkflags);  in unionfs_rmdir()
1760 		error = VOP_RMDIR(udvp, uvp, cnp);  in unionfs_rmdir()
1762 		    ap->a_vp, uvp, uvp_lkflags);  in unionfs_rmdir()
1784 	struct vnode   *uvp;  in unionfs_symlink()  local
1802 		error = VOP_SYMLINK(udvp, &uvp, cnp, ap->a_vap, ap->a_target);  in unionfs_symlink()
1809 			VOP_UNLOCK(uvp);  in unionfs_symlink()
1811 			error = unionfs_nodeget(ap->a_dvp->v_mount, uvp, NULLVP,  in unionfs_symlink()
1813 			vrele(uvp);  in unionfs_symlink()
1816 			vput(uvp);  in unionfs_symlink()
1831 	struct vnode   *uvp;  in unionfs_readdir()  local
1852 	uvp = NULLVP;  in unionfs_readdir()
1871 		uvp = unp->un_uppervp;  in unionfs_readdir()
1875 		if ((uvp != NULLVP && unsp->uns_upper_opencnt <= 0) ||  in unionfs_readdir()
1886 	if (uvp != NULLVP && lvp != NULLVP) {  in unionfs_readdir()
1887 		if ((error = VOP_GETATTR(uvp, &va, ap->a_cred)) != 0)  in unionfs_readdir()
1894 	if (uvp != NULLVP && lvp == NULLVP) {  in unionfs_readdir()
1895 		unionfs_forward_vop_start(uvp, &lkflags);  in unionfs_readdir()
1896 		error = VOP_READDIR(uvp, uio, ap->a_cred, ap->a_eofflag,  in unionfs_readdir()
1898 		if (unionfs_forward_vop_finish(vp, uvp, lkflags))  in unionfs_readdir()
1907 	if (uvp == NULLVP && lvp != NULLVP) {  in unionfs_readdir()
1922 	KASSERT(uvp != NULLVP, ("unionfs_readdir: null upper vp"));  in unionfs_readdir()
1930 		unionfs_forward_vop_start(uvp, &lkflags);  in unionfs_readdir()
1931 		error = VOP_READDIR(uvp, uio, ap->a_cred, &eofflag,  in unionfs_readdir()
1933 		if (unionfs_forward_vop_finish(vp, uvp, lkflags) && error == 0)  in unionfs_readdir()
2056 	struct vnode   *uvp;  in unionfs_getwritemount()  local
2064 	uvp = NULLVP;  in unionfs_getwritemount()
2069 		uvp = unp->un_uppervp;  in unionfs_getwritemount()
2076 	if (uvp == NULLVP && unp != NULL) {  in unionfs_getwritemount()
2088 			uvp = unp->un_uppervp;  in unionfs_getwritemount()
2089 		if (uvp == NULLVP)  in unionfs_getwritemount()
2093 	if (uvp != NULLVP) {  in unionfs_getwritemount()
2094 		vholdnz(uvp);  in unionfs_getwritemount()
2096 		error = VOP_GETWRITEMOUNT(uvp, ap->a_mpp);  in unionfs_getwritemount()
2097 		vdrop(uvp);  in unionfs_getwritemount()
2301 	struct vnode   *uvp;  in unionfs_advlock()  local
2315 	uvp = unp->un_uppervp;  in unionfs_advlock()
2317 	if (uvp == NULLVP) {  in unionfs_advlock()
2321 		uvp = unp->un_uppervp;  in unionfs_advlock()
2326 			error = VOP_OPEN(uvp, unsp->uns_lower_openmode,  in unionfs_advlock()
2340 	error = VOP_ADVLOCK(uvp, ap->a_id, ap->a_op, ap->a_fl, ap->a_flags);  in unionfs_advlock()
2401 	struct vnode   *uvp;  in unionfs_setacl()  local
2412 	uvp = unp->un_uppervp;  in unionfs_setacl()
2419 	if (uvp == NULLVP && lvp->v_type == VREG) {  in unionfs_setacl()
2422 		uvp = unp->un_uppervp;  in unionfs_setacl()
2425 	if (uvp != NULLVP) {  in unionfs_setacl()
2427 		unionfs_forward_vop_start(uvp, &lkflags);  in unionfs_setacl()
2428 		error = VOP_SETACL(uvp, ap->a_type, ap->a_aclp, ap->a_cred, td);  in unionfs_setacl()
2429 		unionfs_forward_vop_finish(ap->a_vp, uvp, lkflags);  in unionfs_setacl()
2559 	struct vnode   *uvp;  in unionfs_setextattr()  local
2570 	uvp = unp->un_uppervp;  in unionfs_setextattr()
2592 		if (uvp == NULLVP &&  in unionfs_setextattr()
2605 		uvp = unp->un_uppervp;  in unionfs_setextattr()
2606 		if ((error = VOP_OPENEXTATTR(uvp, cred, td)) != 0)  in unionfs_setextattr()
2610 		ovp = uvp;  in unionfs_setextattr()
2613 	if (ovp == uvp) {  in unionfs_setextattr()
2654 	struct vnode   *uvp;  in unionfs_deleteextattr()  local
2665 	uvp = unp->un_uppervp;  in unionfs_deleteextattr()
2687 		if (uvp == NULLVP &&  in unionfs_deleteextattr()
2700 		uvp = unp->un_uppervp;  in unionfs_deleteextattr()
2701 		if ((error = VOP_OPENEXTATTR(uvp, cred, td)) != 0)  in unionfs_deleteextattr()
2705 		ovp = uvp;  in unionfs_deleteextattr()
2708 	if (ovp == uvp)  in unionfs_deleteextattr()
2722 	struct vnode   *uvp;  in unionfs_setlabel()  local
2733 	uvp = unp->un_uppervp;  in unionfs_setlabel()
2740 	if (uvp == NULLVP && lvp->v_type == VREG) {  in unionfs_setlabel()
2743 		uvp = unp->un_uppervp;  in unionfs_setlabel()
2746 	if (uvp != NULLVP)  in unionfs_setlabel()
2747 		error = VOP_SETLABEL(uvp, ap->a_label, ap->a_cred, td);  in unionfs_setlabel()
2793 	struct vnode *dvp, *vp, **vpp, *lvp, *uvp, *tvp, *tdvp, *tempvp;  in unionfs_vput_pair()  local
2801 	uvp = NULLVP;  in unionfs_vput_pair()
2824 		uvp = unp->un_uppervp;  in unionfs_vput_pair()
2826 		if (uvp != NULLVP)  in unionfs_vput_pair()
2827 			tvp = uvp;  in unionfs_vput_pair()
2841 			if (uvp != NULLVP)  in unionfs_vput_pair()
2842 				vhold(uvp);  in unionfs_vput_pair()
2882 		error = unionfs_nodeget(mp, uvp, lvp, dvp, &tempvp, NULL);  in unionfs_vput_pair()
2892 	if (uvp != NULLVP)  in unionfs_vput_pair()
2893 		vdrop(uvp);  in unionfs_vput_pair()