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A comprehensive guide to system calls in Linux, encompassing concepts, examples, and in-depth explorations. This repository offers insights into the kernel mechanisms, user-space interactions, and optimization techniques, such as vDSO and fast system calls.

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ANSANJAY/IntroSystemCalls

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Linux System Calls Guide 🐧💻

Welcome to a comprehensive guide on Linux system calls! This repository provides in-depth knowledge, concepts, and hands-on examples related to system call mechanisms in the Linux kernel.

Contents 📖

  • Introduction to System Calls 🌐
    • What is a System Call? 🤔
    • Why are system calls necessary? 🧐
  • Understanding CPL and Context Switching 🔁
  • Deep Dive into Fast System Calls
    • sysenter and sysexit overview 🚀
  • The Magic of vDSO and vsyscalls 🪄
    • Benefits and use-cases 🌟
  • Examples and Hands-On Sessions 🛠️
    • Practical coding sessions for understanding syscalls in action 💡

Contribution 🤝

Feel free to contribute, raise issues, or suggest improvements. Your input is valuable and helps in enhancing this guide for the community. 🌍

License 📜

This project is licensed under the terms mentioned in the LICENSE file.

Stay curious, and happy coding! 🚀🌌

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A comprehensive guide to system calls in Linux, encompassing concepts, examples, and in-depth explorations. This repository offers insights into the kernel mechanisms, user-space interactions, and optimization techniques, such as vDSO and fast system calls.

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