if err = xml.NewDecoder(bytes.NewReader(buf)).Decode(hold); err != nil {
		return nil, err
	}

	if !hold.Status.Valid() {
		return nil, ErrMalformedXML
	}
	return
}

// FilterObjectLockMetadata filters object lock metadata if s3:GetObjectRetention permission is denied or if isCopy flag set.
func FilterObjectLockMetadata(metadata map[string]string, filterRetention, filterLegalHold bool) map[string]string {
	// Copy on write