writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrReplicationNeedsVersioningError), r.URL)
		return
	}
	replicationConfig, err := replication.ParseConfig(io.LimitReader(r.Body, r.ContentLength))
	if err != nil {
		apiErr := errorCodes.ToAPIErr(ErrMalformedXML)
		apiErr.Description = err.Error()
		writeErrorResponse(ctx, w, apiErr, r.URL)
		return
	}

	// region is valid only for CreateBucketAction.
	var region string
	if action == policy.CreateBucketAction {
		// To extract region from XML in request body, get copy of request body.
		payload, err := io.ReadAll(io.LimitReader(r.Body, maxLocationConstraintSize))
		if err != nil {
			authZLogIf(ctx, err, logger.ErrorKind)
			return ErrMalformedXML
		}

		// Populate payload to extract location constraint.

	return input, nil
}

// xmlDecoder provide decoded value in xml.
func xmlDecoder(body io.Reader, v interface{}, size int64) error {
	var lbody io.Reader
	if size > 0 {
		lbody = io.LimitReader(body, size)
	} else {
		lbody = body
	}
	d := xml.NewDecoder(lbody)
	// Ignore any encoding set in the XML body
	d.CharsetReader = nopCharsetConverter
	err := d.Decode(v)
	if errors.Is(err, io.EOF) {

		defer z.AbortMultipartUpload(ctx, bucket, oi.Name, res.UploadID, ObjectOptions{NoAuditLog: true})

		parts := make([]CompletePart, len(oi.Parts))
		for i, part := range oi.Parts {
			hr, err := hash.NewReader(ctx, io.LimitReader(gr, part.Size), part.Size, "", "", part.ActualSize)
			if err != nil {
				return fmt.Errorf("rebalanceObject: hash.NewReader() %w", err)
			}
			pi, err := z.PutObjectPart(ctx, bucket, oi.Name, res.UploadID,

		if err != nil {
			return ErrorRespToObjectError(err, srcBucket, srcObject, srcObjInfo.VersionID)
		}
		defer rd.Close()

		hr, err = hash.NewReader(ctx, io.LimitReader(rd, objInfo.Size), objInfo.Size, "", "", objInfo.Size)
		if err != nil {
			return err
		}
		pReader := NewPutObjReader(hr)
		opts.PreserveETag = ""

		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidBucketObjectLockConfiguration), r.URL)
		return
	}

	legalHold, err := objectlock.ParseObjectLegalHold(io.LimitReader(r.Body, r.ContentLength))
	if err != nil {
		apiErr := errorCodes.ToAPIErr(ErrMalformedXML)
		apiErr.Description = err.Error()
		writeErrorResponse(ctx, w, apiErr, r.URL)
		return
	}

// parseRestoreRequest parses RestoreObjectRequest from xml
func parseRestoreRequest(reader io.Reader) (*RestoreObjectRequest, error) {
	req := RestoreObjectRequest{}
	if err := xml.NewDecoder(io.LimitReader(reader, maxRestoreObjectRequestSize)).Decode(&req); err != nil {
		return nil, err
	}
	return &req, nil
}

	return n, err
}

// readSpecialFile is like io.ReadAll except it returns
// ErrFieldTooLong if more than maxSpecialFileSize is read.
func readSpecialFile(r io.Reader) ([]byte, error) {
	buf, err := io.ReadAll(io.LimitReader(r, maxSpecialFileSize+1))
	if len(buf) > maxSpecialFileSize {
		return nil, ErrFieldTooLong
	}
	return buf, err
}

// discard skips n bytes in r, reporting an error if unable to do so.

		return 0, errIsNotRegular
	}

	if verifier == nil {
		n, err = file.ReadAt(buffer, offset)
		return int64(n), err
	}

	h := verifier.algorithm.New()
	if _, err = io.Copy(h, io.LimitReader(file, offset)); err != nil {
		return 0, err
	}

	if n, err = io.ReadFull(file, buffer); err != nil {
		return int64(n), err
	}

	if _, err = h.Write(buffer); err != nil {
		return 0, err

	// Limit the reader, so the decryptor doesn't receive bytes
	// from the next part (different DARE stream)
	encLenToRead := d.parts[d.partIndex].Size - d.partEncRelOffset
	decrypter, err := newDecryptReaderWithObjectKey(io.LimitReader(d.reader, encLenToRead), partEncryptionKey, d.startSeqNum)
	if err != nil {
		return err
	}

	d.decrypter = decrypter
	return nil
}

func (d *DecryptBlocksReader) Read(p []byte) (int, error) {