}
	if timeout == "" && dsecs != "" {
		expirySecs, err := strconv.ParseInt(dsecs, 10, 64)
		if err != nil {
			return 0, auth.ErrInvalidDuration
		}

		// The duration, in seconds, of the role session.
		// The value can range from 900 seconds (15 minutes)
		// up to 365 days.
		if expirySecs < config.MinExpiration || expirySecs > config.MaxExpiration {
			return 0, auth.ErrInvalidDuration
		}