1.2 KiB
1.2 KiB
Setup env
On NixOS:
- Ensure Linux Kernel is the same as you configuration. Otherwise, change linux_dev variable with you kernel variant and change flake.lock nixpkgs with your version.
- Use direnv allow or nix develop to setup shell.
On other distros:
-
With Nix env, .envrc, change line by
use flake .#other -
Without Nix env, you need to setup LINUX_MODULES_FOLDER to linux modules folder of your distro (ex:
/lib/modules/$(uname -r)) in your shell (bashrc)
make : targets list
- all : Compiling kernel
- clean : Cleaning build folder
All subfolder is configured to use LINUX_MODULES_FOLDER env variable set by flake develop
How test module
Step 1: Load module
sudo insmod [module_name].ko
Warning: Can fail if secure boot is enabled
Step 2: Check logs
sudo dmesg | tail
Step 3: Unload module
sudo rmmod [module_name].ko
Usefull links
Notes
- Find required headers files
nix shell nixpkgs#bear
cd 01_basic_module/
bear --append --output ../.vscode/compile_commands.json -- make -C $LINUX_MODULES_FOLDER/build M=$PWD modules
Search -I args and -D args