• Slides

Download and unzip the tasks archive sesiune-05 on the virtual machine.

1. Z device
   • Fill the code in 1-devz/ directory to implement a simple character device driver that is a source for reading Z characters.
     • The module will use major 42 and minor 0. Make use of this information when creating device node file
     • mknod /dev/z c 42 0
     • cat /dev/z should read ZZZZZ…
     • Follow the comments inside the source file and add printks for relevant operations
     • Have a look at raw_init and raw_exit functions.
2. nasty device
   • Follow the code in 2-nasty/ and take notice how a simple character device read/write operations are implemented.
   • Compile the driver and explain what its actions.