从Linux上的根程序获得对tty设备的独占访问权限

I have a program running as root on Linux, talking to a tty (actually an LCD implemented as a tty). The device for what it's worth is /dev/ttyUSB0. I'd like to have my program that writes to this device be able to have exclusive access to the device, so as to not have any interference from other instances of the program running at the same time.I have a program running as root on Linux, talk