ufs_getacl_nfs4_internal
int ufs_getacl_nfs4_internal(struct vnode *vp, struct acl *aclp, struct lwp *l);
error = ufs_getacl_nfs4_internal(ap->a_vp, ap->a_aclp, l);
error = ufs_getacl_nfs4_internal(dvp, parent_aclp, l);
error = ufs_getacl_nfs4_internal(vp, acl, curlwp);
error = ufs_getacl_nfs4_internal(vp, aclp, l);