nfsrv_composefh
error = nfsrv_composefh(vp, &nsfh, v3);
error = nfsrv_composefh(vp, &nsfh, true);
error = nfsrv_composefh(nd.ni_vp, &nsfh, v3);
error = nfsrv_composefh(vp, &nsfh, v3);
if (nfsrv_composefh(nvp, &nnsfh, true)) {
error = nfsrv_composefh(vp, &nsfh, v3);
int nfsrv_composefh(struct vnode *, nfsrvfh_t *, bool);