Linux Kernel Device Driver Development (Part 2) | driver.c | скачать в хорошем качестве

Linux Kernel Device Driver Development (Part 2) | driver.c |

🚀 Linux Kernel Device Driver Development | Part 2 | driver.c 🧠 In this video, we move one level deeper into Linux Kernel Development. This part focuses on writing the actual kernel driver (driver.c) that registers a character device, creates a /dev entry, and prepares an IOCTL interface for communication between user space and kernel space. 🔧 What is covered in this video? 📌 Writing a Linux Kernel Module (LKM) 📌 Registering a Character Device using `register_chrdev()` 📌 Understanding major numbers and kernel device registration 📌 Creating a device node automatically using     → `class_create()`     → `device_create()` 📌 Defining and handling *IOCTL commands* 📌 Understanding *file_operations structure* 📌 Kernel ↔ User Space interaction basics 📌 Proper resource cleanup using module exit 🧩 Core Concepts Explained 🔹 What happens when a kernel module is inserted using `insmod` 🔹 Why `module_init()` and `module_exit()` are critical 🔹 How `/dev/aditya` is created automatically 🔹 Difference between: Kernel IOCTL handler vs User-space ioctl() ``` 🔹 How the kernel decides which function to call on an ioctl request 📂 Code implemented in this video ✔ `driver.c` (Kernel module source file) ✔ IOCTL command definition using `_IOW()` ✔ `file_operations` rulebook ✔ Kernel logging using `printk()` ✔ Proper driver cleanup on module removal 🖥️ Result of this video After loading the module: /dev/aditya ✔ Device is successfully created ✔ Kernel is ready to receive ioctl commands ✔ Foundation is set for user-space programs 🔜 What’s coming next? (Part 3) ➡️ Writing a User Space Application ➡️ Calling `ioctl()` from user space ➡️ Triggering kernel code from terminal ➡️ Verifying kernel execution using `dmesg` 🎯 Who is this video for? ✅ Students learning *Linux Kernel Development* ✅ Beginners in *Device Driver Programming* ✅ Internship / Interview preparation ✅ Anyone curious about how Linux talks to hardware ⚠️ Important Notes 🔸 This video focuses only on driver setup & registration 🔸 Queue logic, blocking behavior, and data handling will be added later 🔸 All code is written step-by-step and explained in depth 📌 Tools & Environment 🖥️ Ubuntu Linux 🧠 Linux Kernel Modules ⚙️ GCC + Makefile 📦 Character Device Drivers ⭐ Support the series 👍 Like the video if it helped 💬 Comment your doubts or suggestions 📌 Subscribe for upcoming kernel driver parts 🔗 Part 1: Makefile for Kernel Module 🔗 Part 2: Driver Skeleton (this video) 🔗 Part 3: User Space IOCTL Program (coming next) 🔥 This video builds the backbone of the entire driver. Master this part, and everything ahead becomes easy