static void v9fs_link(void *opaque)
{
    V9fsPDU *pdu = opaque;
    int32_t dfid, oldfid;
    V9fsFidState *dfidp, *oldfidp;
    V9fsString name;
    size_t offset = 7;
    int err = 0;
    v9fs_string_init(&name);
    err = pdu_unmarshal(pdu, offset, "dds", &dfid, &oldfid, &name);
    if (err < 0) {
    trace_v9fs_link(pdu->tag, pdu->id, dfid, oldfid, name.data);
    if (name_is_illegal(name.data)) {
        err = -ENOENT;
    dfidp = get_fid(pdu, dfid);
    if (dfidp == NULL) {
        err = -ENOENT;
    oldfidp = get_fid(pdu, oldfid);
    if (oldfidp == NULL) {
        err = -ENOENT;
        goto out;
    err = v9fs_co_link(pdu, oldfidp, dfidp, &name);
    if (!err) {
        err = offset;
out:
    put_fid(pdu, dfidp);
out_nofid:
    v9fs_string_free(&name);
    pdu_complete(pdu, err);