globalInplaceUpdateDisabled = strings.EqualFold(env.Get(config.EnvUpdate, config.EnableOn), config.EnableOff)

	// Check if the supported credential env vars,
	// "MINIO_ROOT_USER" and "MINIO_ROOT_PASSWORD" are provided
	// Warn user if deprecated environment variables,
	// "MINIO_ACCESS_KEY" and "MINIO_SECRET_KEY", are defined
	// Check all error conditions first
	//nolint:gocritic

sleep 10

echo "Verifying ETag for all objects"
s3-check-md5 -versions -access-key minio -secret-key minio123 -endpoint http://127.0.0.1:9001/ -bucket bucket
s3-check-md5 -versions -access-key minio -secret-key minio123 -endpoint http://127.0.0.1:9002/ -bucket bucket
s3-check-md5 -versions -access-key minio -secret-key minio123 -endpoint http://127.0.0.1:9003/ -bucket bucket

	if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketEncryptionAction, bucket, ""); s3Error != ErrNone {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
		return
	}

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

	// Parse bucket encryption xml

	// Add more supported headers here.
}

// isDirectiveValid - check if tagging-directive is valid.
func isDirectiveValid(v string) bool {
	// Check if set metadata-directive is valid.
	return isDirectiveCopy(v) || isDirectiveReplace(v)
}

// Check if the directive COPY is requested.
func isDirectiveCopy(value string) bool {
	// By default if directive is not set we

	}

	// We know XFS already supports O_DIRECT no need to check.
	if fsType == "XFS" {
		return nil
	}

	// For all other FS pay the price of not using our recommended filesystem.

	// Check if backend is writable and supports O_DIRECT
	uuid := mustGetUUID()
	filePath := pathJoin(s.drivePath, minioMetaTmpDeletedBucket, ".writable-check-"+uuid+".tmp")

	// Create top level directories if they don't exist.

		},
		// Test case - 4
		// Check for presigned.
		{
			req: &http.Request{
				URL: &url.URL{
					Host:     "127.0.0.1:9000",
					Scheme:   httpScheme,
					Path:     SlashSeparator,
					RawQuery: "X-Amz-Credential=EXAMPLEINVALIDEXAMPL%2Fs3%2F20160314%2Fus-east-1",
				},
			},
			authT: authTypePresigned,
		},
		// Test case - 5
		// Check for post policy.
		{
			req: &http.Request{

	config.Lock()
	defer config.Unlock()

	// check if tier name is in all caps
	tierName := tier.Name
	if tierName != strings.ToUpper(tierName) {
		return errTierNameNotUppercase
	}

	// check if tier name already in use
	if _, exists := config.isTierNameInUse(tierName); exists {
		return errTierAlreadyExists
	}

	update := r.Form.Get("update") == "true"

	// Get current object layer instance.
	objectAPI, _ := validateAdminReq(ctx, w, r, policy.SetBucketTargetAction)
	if objectAPI == nil {
		return
	}

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

		return false
	}

	if err := storageServerRequestValidate(r); err != nil {
		s.writeErrorResponse(w, err)
		return false
	}

	return true
}

// IsValid - To authenticate and check if the disk-id in the request corresponds to the underlying disk.
func (s *storageRESTServer) IsValid(w http.ResponseWriter, r *http.Request) bool {
	if !s.IsAuthValid(w, r) {
		return false
	}

	_, found := cache.iamUsersMap[accessKey]

	// Check for regular user access key
	if !found {
		store.loadUser(ctx, accessKey, regUser, cache.iamUsersMap)
		if _, found = cache.iamUsersMap[accessKey]; found {
			// load mapped policies
			store.loadMappedPolicyWithRetry(ctx, accessKey, regUser, false, cache.iamUserPolicyMap, 3)
		}
	}

	// Check for service account
	if !found {