return
	}

	// Check if bucket exists.
	if _, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{}); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Read bucket access policy.
	config, err := globalPolicySys.Get(bucket)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	configData, err := json.Marshal(config)

		return
	}

	if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, dstBucket, dstObject); s3Error != ErrNone {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
		return
	}

	// Read escaped copy source path to check for parameters.
	cpSrcPath := r.Header.Get(xhttp.AmzCopySource)
	var vid string
	if u, err := url.Parse(cpSrcPath); err == nil {
		vid = strings.TrimSpace(u.Query().Get(xhttp.VersionID))

// Check if this is Helm package installation and report helm chart version
func getHelmVersion(helmInfoFilePath string) string {
	// Read the file exists.
	helmInfoFile, err := Open(helmInfoFilePath)
	if err != nil {
		// Log errors and return "" as MinIO can be deployed
		// without Helm charts as well.
		if !osIsNotExist(err) {

	if err != nil {
		return err
	}

	if len(data) == 0 {
		return nil
	}
	if len(data) <= 4 {
		return fmt.Errorf("rebalanceMeta: no data")
	}

	// Read header
	switch binary.LittleEndian.Uint16(data[0:2]) {
	case rebalMetaFmt:
	default:
		return fmt.Errorf("rebalanceMeta: unknown format: %d", binary.LittleEndian.Uint16(data[0:2]))
	}

// the Close() function is called.
type closeNotifier struct {
	rc   io.ReadCloser
	done chan struct{}
}

func (c *closeNotifier) Read(p []byte) (n int, err error) {
	n, err = c.rc.Read(p)
	if err != nil {
		if c.done != nil {
			xioutil.SafeClose(c.done)
			c.done = nil
		}
	}
	return n, err
}

func (c *closeNotifier) Close() error {

		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	api.getObjectAttributesHandler(ctx, objectAPI, bucket, object, w, r)
}

// HeadObjectHandler - HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (api objectAPIHandlers) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "HeadObject")

	}

	gotBuckets := set.NewStringSet()
	for _, b := range accInfo.Buckets {
		gotBuckets.Add(b.Name)
		if !(b.Access.Read && b.Access.Write) {
			c.Fatalf("root user should have read and write access to bucket: %v", b.Name)
		}
	}
	shouldHaveBuckets := set.CreateStringSet(bucket2, bucket)
	if !gotBuckets.Equals(shouldHaveBuckets) {

	minioMetaTmpDeletedBucket = minioMetaTmpBucket + "/.trash"

	// DNS separator (period), used for bucket name validation.
	dnsDelimiter = "."
	// On compressed files bigger than this;
	compReadAheadSize = 100 << 20
	// Read this many buffers ahead.
	compReadAheadBuffers = 5
	// Size of each buffer.
	compReadAheadBufSize = 1 << 20
	// Pad Encrypted+Compressed files to a multiple of this.
	compPadEncrypted = 256

	}
	return fi
}

// ReadMultipleReq contains information of multiple files to read from disk.
type ReadMultipleReq struct {
	Bucket       string   // Bucket. Can be empty if multiple buckets.
	Prefix       string   // Shared prefix of all files. Can be empty. Will be joined to filename without modification.
	Files        []string // Individual files to read.
	MaxSize      int64    // Return error if size is exceed.

	}

	d.decrypter = decrypter
	return nil
}

func (d *DecryptBlocksReader) Read(p []byte) (int, error) {
	var err error
	var n1 int
	decPartSize, _ := sio.DecryptedSize(uint64(d.parts[d.partIndex].Size))
	unreadPartLen := int64(decPartSize) - d.partDecRelOffset
	if int64(len(p)) < unreadPartLen {
		n1, err = d.decrypter.Read(p)
		if err != nil {
			return 0, err
		}
		d.partDecRelOffset += int64(n1)