getprivinfo
extern int getprivinfo(priv_impl_info_t *, size_t);
if (getprivinfo(&ii, sizeof (ii)) != 0 ||
(void) getprivinfo(ip, PRIV_IMPL_INFO_SIZE(&ii));
if (getprivinfo(aip, size) != 0)
} else if (getprivinfo(ip, realsize) != 0) {