local_strnlen
ATTRIBUTE_WARN_UNUSED_RET int local_strnlen(const char *s, u32 maxlen, u32 *len);
ret = local_strnlen((const char *)ec_name, ec_name_len, &len); EG(ret, err);
ret = local_strnlen((const char *)ec_name, ec_name_len, &len); EG(ret, err);
ret = local_strnlen((const char *)curve_name, MAX_CURVE_NAME_LEN, &len); EG(ret, err);
ret = local_strnlen((const char *)curve_name, MAX_CURVE_NAME_LEN, &len); EG(ret, err);
ret = local_strnlen(fname_prefix, fname_len, &len); EG(ret, err);