pepe-drive

Toy project. A simple Linux driver for in-memory char device, tested on Linux kernel 6.2.0-23. Allow read ANSI image from /dev/pepe0. Probably not secure, so use it on your own risk.

# Load module (driver)
$ make
$ sudo ./manage_module.bash load
$ ls -al /dev/pepe0
  cr--r--r-- 1 root root 509, 0 maj  2 09:51 /dev/pepe0

# Read device content
$ echo -e $(cat /dev/pepe0)
$ sudo dmesg | tail -20

# Check module parameter
$ cat /sys/module/pepe/parameters/wednesday

# Unload module (driver)
$ sudo ./manage_module.bash unload

Visual Studio Code and clangd

After generating compile_commands.json for Linux source code, clangd extension can be used.

$ cd ~/linux-kernel
$ ./scripts/clang-tools/gen_compile_commands.py

$ cp ~/linux-kernel/compile_commands.json ~/pepe-drive

Then reset Visual Studio Code.

clang-format

$ ln -s ~/linux-kernel/.clang-format .

$ clang-format -style=file:.clang-format -i *.c
$ clang-format -style=file:.clang-format -i *.h

See also/References/Credits

• https://lwn.net/Kernel/LDD3/
• https://github.com/d0u9/Linux-Device-Driver
• https://dom111.github.io/image-to-ansi/