https://github.com/zfletch/linux-kernel-upcase

Upcase Linux kernel module
https://github.com/zfletch/linux-kernel-upcase

Last synced: about 1 year ago
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Upcase Linux kernel module

• Host: GitHub
• URL: https://github.com/zfletch/linux-kernel-upcase
• Owner: zfletch
• License: gpl-2.0
• Created: 2014-06-10T22:31:55.000Z (about 12 years ago)
• Default Branch: master
• Last Pushed: 2014-06-12T22:40:22.000Z (about 12 years ago)
• Last Synced: 2025-02-16T20:20:56.705Z (over 1 year ago)
• Language: C
• Homepage:
• Size: 156 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
Linux Upcase Kernel Module

==========================

Kernel module based on the tutorial

[Be a Kernel Hacker: Write Your First Linux Kernel Module](http://www.linuxvoice.com/be-a-kernel-hacker)

written by Valentine Sinitsyn.

This module creates a device called `/dev/upcase` which takes a string and converts

any lower case ASCII characters into upper case characters.

How to Compile

==============

- `git clone https://github.com/zfletch/linux-kernel-upcase`

- `cd linux-kernel-upcase/src`

- `make`

How to Insert the Module

=========================

- `sudo insmod upcase.ko`

- `dmesg | tail -n 1` should say `upcase device registered with buffer size 8192 bytes`

How to Test

===========

- `cd ../test`

- `gcc test.c`

- `sudo ./a.out hello` should print `HELLO` (note the sudo)

How to Reload the Module

========================

- `sudo rmmod upcase`

- Make some changes

- `sudo insmod upcase.ko`