michieldwitte / sysfs_mock

Add a sysfs file on an existing location

sysfs mock

Simple kernel module that helps to mock /sys/firmware/devicetree/base/model
This has been tested using QEMU and buildroot.

Build

If you want to build this you need to edit the Makefile to point to the correct kernel-headers.
Then use make to build the kernel module.

Crosscompile

To build this you need to edit the Makefile to point to the kernel-headers in for example buildroot.
Then edit the CROSS_COMPILE argument in the make (make sure the ARCH matches your target architecture).

make CROSS_COMPILE=/home/dev/Desktop/buildroot-2022.11-rc1/output/host/bin/aarch64-buildroot-linux-gnu- ARCH=arm64

Usage

insmod sysfs_mock.ko  
echo "desired_model_string" > /sys/firmware/devicetree/base/model  
cat /sys/firmware/devicetree/base/model