__gr_match_entry
rv = __gr_match_entry(hes[0], strlen(hes[0]), how, name, gid);
rv = __gr_match_entry(buffer, resultlen, how, name, gid);
rv = __gr_match_entry(line, linesize, how, name, gid);
int __gr_match_entry(const char *, size_t, enum nss_lookup_type,
rv = __gr_match_entry(line, linesize, how, name, gid);