This workshop, offered by ITU ACM, is designed to introduce participants to the fundamentals of systems programming. Covering topics from device driver I/O to process management, the workshop aims to provide hands-on experience with kernel modules, file systems, and process management through a series of projects.

• Name: H. Turgut Uyar
• Email: uyar at itu.edu.tr
• Matrix/Element: @uyar:matrix.org

A Matrix chat group will be created to keep in touch, share updates, and help each other out throughout the course. It's also a direct line to the lecturer for any questions you've got.

Reach out to one of the responsible students or the lecturer, to join the group.

• Building: Electrics and Electronics Building (EEB) 5101

• Duration: 18:00-20:00

Participants should have a basic understanding of operating systems and C programming. Prior experience with Linux or Unix-like environments is recommended.

To ensure a safe and uniform development environment, we recommend using a virtual machine. This helps prevent any potential harm to your computer's operating system. We will be using Oracle VM VirtualBox and Ubuntu 22.04 LTS (Jammy Jellyfish).

1. Download and Install Oracle VM VirtualBox

   • Visit Oracle VM VirtualBox and download the latest version of VirtualBox for your operating system. Follow the installation instructions provided on the website.

2. Download Ubuntu 22.04 LTS

   • Download Ubuntu 22.04 LTS from the Official Ubuntu Website. Choose the ISO file for the desktop version.

3. Create a New Virtual Machine

   • Open VirtualBox and click "New" to create a new virtual machine.
   • Name your virtual machine (e.g., "Ubuntu 22.04 LTS Workshop") and select "Linux" as the type and "Ubuntu (64-bit)" as the version.
   • Allocate at least 4 GB of RAM and create a new virtual hard disk with at least 40 GB of space to ensure there is enough storage for the final project, where we will compile the Linux kernel. A single CPU Core should be enough.

4. Install Ubuntu on Your Virtual Machine

   • Follow the VirtualBox prompts to start the virtual machine using the Ubuntu ISO file you downloaded. Proceed with the installation of Ubuntu.
   • Choose English as the installation Language.
   • Opt for a Minimal Installation during the setup process, which excludes office software, games, and other unnecessary applications.

5. Install VirtualBox Guest Additions

   • Once Ubuntu is installed, install the VirtualBox Guest Additions for improved integration between the host system and the virtual machine (e.g., better screen resolution, shared clipboard, shared folders, drag and drop option, etc.).

Continue with the "pseudo" device example from the presentation and implement the following tasks:

• Make device capacity a module parameter.
• Make reading from the device a circular operation; i.e. upon reaching the end of the device, continue from the beginning. Also, write a test program to test various cases.
• Implement the write operation. This should not be circular and report "device full" when device end is reached. Also, write a test program to test various cases.
• Imolement the seek operation. Also, write a test program to test various cases.
• Implement an ioctl operation named "PSEUDO_INC" which takes an 8-bit, signed integer value as parameter and increases each byte in the device by that value. Also, write a test program to test various cases.
• At the moment, the device node has to be created manually after inserting the module. Handle this automatically without the need for human intervention.
• Add an entry for the device under the /proc file system, like /proc/pseudo.This entry should report the device capacity.

Implement each of these tasks as one separate commit and notify the instructor via Matrix or e-mail with a link to your repository.

Lecture notes under unofficialLectureNotes are provided by Denis Davidoglu.

Lecture materials for the System Programming course as taught at Istanbul Technical University can be accessed under this link. These materials can provide further insights and complement what we cover in our workshop. Please note that this workshop is not 100% aligned with the mentioned course, the link is provided as an additional resource.