nfsrpc_accessrpc
int nfsrpc_accessrpc(vnode_t, u_int32_t, struct ucred *,
error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode);
error = nfsrpc_accessrpc(vp, wmode, cred, td, &nfsva, &attrflag,