VOP_GETACL
error = VOP_GETACL(vp, ACL_TYPE_NFS4,
error = VOP_GETACL(vp, acl_type_unold(type), inkernelacl, l->l_cred);
error = VOP_GETACL(vp, type, aclp, cred);
int VOP_GETACL(struct vnode *, acl_type_t, struct acl *, kauth_cred_t);
error = VOP_GETACL(dvp, ACL_TYPE_DEFAULT, acl, cred);
error = VOP_GETACL(dvp, ACL_TYPE_DEFAULT, acl, cred);
error = VOP_GETACL(vp, type, acl, ap->a_cred);