https://github.com/suyashsingh/lkm

Linux Kernel Module / Linux Device Drivers
https://github.com/suyashsingh/lkm

Last synced: about 2 months ago
JSON representation

Linux Kernel Module / Linux Device Drivers

• Host: GitHub
• URL: https://github.com/suyashsingh/lkm
• Owner: suyashsingh
• Created: 2021-05-30T04:44:20.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-05-30T12:10:12.000Z (over 3 years ago)
• Last Synced: 2023-10-29T17:24:48.806Z (about 1 year ago)
• Language: C
• Size: 4.88 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Linux Kernel Module / Linux Device Drivers

## 1. [hello-world](/hello-world)

+ Simple hello world loadable kernel module(lkm).

+ linux/module.h includes linux init.h. Don't include it explicitly.

+ module.h contains module_init(), module_exit(), MODULE_AUTHOR and other 

    meta macros. 

+ check dmesg, lsmod for checking the module functionality.

+ Build using `make` and clean up using `make clean`

+ Load module using `sudo insmod hello_world.ko` and remove using 

    `sudo rmmod hello_world`

## 2. Hello World Character Driver

+ Simple character driver.

+ Device file: `/dev/hello_char_0`, sysfs class dir: `/sys/class/hello_char`

+ Change ownership of the device file `chown username /dev/dev/hello_char_0`

+ Reading `cat /dev/hello_char_0` or `strace cat /dev/hello_char_0`

+ Writing `echo "hello" > /dev/hello_char_0` or `strace echo "hello" > /dev/hello_char_0`

+ Use `demsg` for logs.