RestoreID:  strings.TrimSuffix(path.Base(obj.Name), kvPrefix),
				CreateTime: obj.ModTime, // ModTime is createTime for config history entries.
			}
			if withData {
				data, err := readConfig(ctx, objAPI, obj.Name)
				if err != nil {
					// ignore history file if not readable.
					continue
				}

				data, err = decryptData(data, obj.Name)
				if err != nil {

		},
	)

	return prefixUsageCache.Get()
}

func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (DataUsageInfo, error) {
	buf, err := readConfig(ctx, objAPI, dataUsageObjNamePath)
	if err != nil {
		buf, err = readConfig(ctx, objAPI, dataUsageObjNamePath+".bkp")
		if err != nil {
			if errors.Is(err, errConfigNotFound) {
				return DataUsageInfo{}, nil
			}

	}
	if osIsPermission(err) {
		logger.Info("Older config found but is not readable %s, proceeding to read config from other places", err)
	}
	if osIsNotExist(err) || osIsPermission(err) || len(data) == 0 {
		data, err = readConfig(GlobalContext, objAPI, configFile)
		if err != nil {
			// when config.json is not found, then we freshly initialize.
			if errors.Is(err, errConfigNotFound) {
				return newServerCfg()
			}
			return nil, err
		}

	buf, err := io.ReadAll(r)
	if err != nil {
		return nil, ObjectInfo{}, err
	}
	if len(buf) == 0 {
		return nil, ObjectInfo{}, errConfigNotFound
	}
	return buf, r.ObjInfo, nil
}

func readConfig(ctx context.Context, store objectIO, configFile string) ([]byte, error) {
	buf, _, err := readConfigWithMetadata(ctx, store, configFile, ObjectOptions{})
	return buf, err
}

type objectDeleter interface {

	result.Cfg, err = readServerConfig(ctx, objectAPI, nil)
	if err != nil {
		return
	}

	result.Dynamic, err = result.Cfg.ReadConfig(bytes.NewReader(kvBytes))
	if err != nil {
		return
	}

	result.SubSys, _, _, err = config.GetSubSys(string(kvBytes))
	if err != nil {
		return
	}

	}

	cfg, err := readServerConfig(ctx, objectAPI, nil)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	dynamic, err := cfg.ReadConfig(strings.NewReader(cfgData))
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	// IDP config is not dynamic. Sanity check.
	if dynamic {

			return nil, err
		}
		ids[tgt] = true
	}
	if err := scanner.Err(); err != nil {
		return nil, err
	}
	return
}

// ReadConfig - read content from input and write into c.
// Returns whether all parameters were dynamic.
func (c Config) ReadConfig(r io.Reader) (dynOnly bool, err error) {
	var n int
	scanner := bufio.NewScanner(r)
	dynOnly = true
	for scanner.Scan() {

		return BucketMetadata{}, errInvalidArgument
	}
	b := newBucketMetadata(name)
	configFile := path.Join(bucketMetaPrefix, name, bucketMetadataFile)
	data, err := readConfig(ctx, api, configFile)
	if err != nil {
		return b, err
	}
	if len(data) <= 4 {
		return b, fmt.Errorf("loadBucketMetadata: no data")
	}
	// Read header
	switch binary.LittleEndian.Uint16(data[0:2]) {

func loadTierConfig(ctx context.Context, objAPI ObjectLayer) (*TierConfigMgr, error) {
	if objAPI == nil {
		return nil, errServerNotInitialized
	}

	data, err := readConfig(ctx, objAPI, tierConfigPath)
	if err != nil {
		return nil, err
	}

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

	// Read header

	case job.Expire != nil:
		version = batchExpireVersionV1
		format = batchExpireFormat
	default:
		return errors.New("no supported batch job request specified")
	}
	data, err := readConfig(ctx, api, getJobReportPath(job))
	if err != nil {
		if errors.Is(err, errConfigNotFound) || isErrObjectNotFound(err) {
			ri.Version = int(version)
			switch {
			case job.Replicate != nil: