static void parse_option_number(const char *name, const char *value,

                                uint64_t *ret, Error **errp)

{

    char *postfix;

    uint64_t number;



    number = strtoull(value, &postfix, 0);

    if (*postfix != '\0') {

        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number");

        return;

    }

    *ret = number;

}
