当数据到达Linux中的串行端口（RS232）时，是否可以向用户应用发送通知消息？

Question

I know Linux can register udev events for USB accessories when it connects/disconnects to system, through udev apps can get notified on USB events so necessary action can be applied by applications.

Is there any ways we can do same event notifications to user apps for serial peripherals (RS232) ? Does linux support any such infrastructure which can do this? Basically I was read data from serial port as it arrives to serial port rather than creating a thread and waiting for data from serial port.

Answer 1

Without poll(ing)/select(ing) on the serial device with a program/daemon, you can not react if data arrives on the serial console.

You can write a own kernel-driver, but this needs more effort.