function getBucketAcl(params, callback) {
    submitRequest.call(this, {
        Action: 'name/cos:GetBucketACL',
        method: 'GET',
        Bucket: params.Bucket,
        Region: params.Region,
        headers: params.Headers,
        action: 'acl',
    }, function (err, data) {
        if (err) {
            return callback(err);
        }
        var AccessControlPolicy = data.AccessControlPolicy || {};
        var Owner = AccessControlPolicy.Owner || {};
        var Grant = AccessControlPolicy.AccessControlList.Grant || [];
        Grant = util.isArray(Grant) ? Grant : [Grant];
        var result = decodeAcl(AccessControlPolicy);
        if (data.headers && data.headers['x-cos-acl']) {
            result.ACL = data.headers['x-cos-acl'];
        }
        result = util.extend(result, {
            Owner: Owner,
            Grants: Grant,
            statusCode: data.statusCode,
            headers: data.headers,
        });
        callback(null, result);
    });
}