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

	listBuckets := objectAPI.ListBuckets

	cred, owner, s3Error := checkRequestAuthTypeCredential(ctx, r, policy.ListAllMyBucketsAction)
	if s3Error != ErrNone && s3Error != ErrAccessDenied {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
		return
	}

	// Anonymous users, should be rejected.
	if cred.AccessKey == "" {