What is the process of installing a Linux kernel module?
The installation process of Linux kernel modules can be divided into the following steps:
- To write module source code: You first need to write a module source code file containing the necessary functionality, usually written in C language.
- Compile module source code: Use a compiler to compile the source code into a module binary file (.ko file), and you can simplify the compilation process by using a Makefile.
- Load module: Use the insmod command to load the compiled module into the kernel, enabling it to run and provide the corresponding functionality.
- Unload module: When the module is no longer needed, you can use the `rmmod` command to unload it from the kernel and release resources.
- Automatically load configuration modules: One way to achieve this is by modifying system configuration files (such as /etc/modules) or writing udev rules to ensure that modules are loaded automatically when the system starts up.
In general, the process of installing Linux kernel modules involves writing, compiling, loading, and unloading the modules, which can be adjusted and configured according to specific needs and circumstances.