import sysfrom xen.lowlevel import flaskfrom xen.xend import sxp#Functions exported through XML-RPCxmlrpc_exports = [ ]def err(msg):    """Raise XSM-Flask exception.    """    sys.stderr.write("XSM-FlaskError: " + msg + "\n")    raise XSMError(msg)def on():    return 1def ssidref2label(ssidref):    try:        return flask.flask_sid_to_context(ssidref)    except:        return ""def label2ssidref(label, policy, type):    try:        return flask.flask_context_to_sid(label)    except:        return ""def parse_security_label(security_label):    return security_labeldef calc_dom_ssidref_from_info(info):    ssidref = label2ssidref(info['security_label'], "", "")    return ssidrefdef set_security_label(policy, label):    return labeldef ssidref2security_label(ssidref):    return ssidref2label(ssidref)def get_security_label(self, xspol=None):    label = self.info.get('security_label', '')    return label