mdb_tgt_getxdata
if (mdb_tgt_getxdata(t, "ehdr", &leh, sizeof (leh)) != -1 &&
return (mdb_tgt_getxdata(mdb.m_target, name, buf, nbytes));
extern ssize_t mdb_tgt_getxdata(mdb_tgt_t *, const char *, void *, size_t);