ソフトウェア申請root権限の取得

// root 
        RootManager manager=new RootManager();
        manager.upgradeRootPermission(getPackageCodePath());

public class RootManager {

    /**
     *   Root ， ( ROOT )
     * 
     * @return  / Root 
     */
    public boolean upgradeRootPermission(String pkgCodePath) {
        Process process = null;
        DataOutputStream os = null;
        try {
            String cmd="chmod 777 " + pkgCodePath;
            process = Runtime.getRuntime().exec("su"); // root 
            os = new DataOutputStream(process.getOutputStream());
            os.writeBytes(cmd + "
");
            os.writeBytes("exit
");
            os.flush();
            process.waitFor();
        } catch (Exception e) {
            return false;
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
                process.destroy();
            } catch (Exception e) {
            }
        }
        return true;
    }

}