"Describe how data transmission is handled in character device drivers. What are the challenges of managing data in a stream-oriented approach and how do you address them in your driver implementations?"
Data transmission is handled using basic read and write operations and custom ioctl functions.
Reading and writing operations could be done with a terminal device '/dev'tty' using read() and write() user and kernel functions.
IOCTL is used for device specific commands which are combinations of basic functions in a custom way or any other command other than basic ones. Configuring baud rates on a serial port and adjusting sound volume on audio devices are examples.
Stream oriented data transmission refers to order in which data is sent and received.
