PKGBUILDs/alarm/xbmc-rbp-git/polkit.rules

polkit.addRule(function(action, subject) {
    if (subject.user == "xbmc") {
        polkit.log("action=" + action);
        polkit.log("subject=" + subject);
        if (action.id.indexOf("org.freedesktop.login1.") == 0) {
            return polkit.Result.YES;
        }
        if (action.id.indexOf("org.freedesktop.udisks.") == 0) {
            return polkit.Result.YES;
        }
    }
});