All about the Linux drivers Under 3 minutes скачать в хорошем качестве

All about the Linux drivers Under 3 minutes

Ever wondered how your CPU, GPU, and disk actually talk to each other without crashing the entire system? In this video, we dive deep into the machine to explore how Linux Device Drivers act as the master translators between your hardware and your operating system. If you learned something new, drop a like and subscribe to BareMetal for more deep dives into systems programming and architecture! ⏳ Video Chapters: 0:00 - The Hardware Language Barrier 0:09 - Meet the Linux Driver 0:31 - User Space vs. Kernel Space 0:53 - Crossing the Wall (System Calls) 1:16 - Everything is a File Explained 1:42 - The Secure Bridge (copy_to_user) 2:08 - Hardware Interrupts (The "Zap") 2:34 - The 3 Driver Families 2:54 - Lifecycle & Kernel Panics ⚙️ What you will learn: Why User Space and Kernel Space are strictly separated. How applications use System Calls to cross the security boundary. The genius behind the Linux philosophy: "Everything is a File." How drivers safely move raw binary data using copy_to_user. Why hardware uses Interrupts instead of making the CPU wait. 📜 Full Video Transcript: Your computer is a crowded city. The CPU, GPU, and #codinglife #computerscience #programming2026 #baremetal #rustlang #rusttutorial Disk all speak different languages. Without a translator, the city stops. So... how do they talk? Meet the Linux Driver. It’s the middleman between your apps and your hardware. Apps speak 'code,' but hardware speaks 'electricity.' The driver sits in the middle, translates every command, and makes sure the message actually gets through. No driver, no action. It's all about security. Apps live in User Space—a safe sandbox. But hardware lives in Kernel Space—the VIP vault. A massive wall sits between them. Apps can’t touch the hardware directly because one wrong move could crash the whole system. So, how does an app cross that wall? Through a System Call. When an app needs data, it triggers a 'Software Interrupt.' The Kernel stops everything, scans the request for security, and if everything looks good, it transforms that request into a privileged packet and lets it drop straight into the engine room. In Linux, everything is a file. Your mouse, your keyboard, and your SSD all live in the /dev/ folder. The Kernel uses a 'Major Number' to find the right driver for each file. It then maps simple commands like 'Open' or 'Write' directly to the driver’s brain. Time to move data. The driver pulls raw bits from the hardware into the Kernel. But since the app is stuck in the sandbox, it can't see them. The driver uses a bridge called copy_to_user to safely slide the data across the wall and into the app's hands. Hardware is slow; the CPU is fast. The CPU can't just sit around waiting for a disk. Instead, the hardware 'Zaps' the CPU with an Interrupt. The driver quickly says 'Got it!' in the Top Half, then finishes the heavy data work later in the Bottom Half. Drivers come in three families. Character drivers handle data byte-by-byte, like a keyboard. Block drivers handle huge chunks, like a hard drive. And Network drivers? They specialize in high-speed data packets from the web. Drivers are loadable modules. They plug in, do their job, and unplug when finished. But if a developer forgets to clean up the memory? BOOM. Kernel Panic. System crash. And that is how Linux drivers keep your world running. Subscribe for more! #Linux #ComputerScience #OperatingSystems #LinuxKernel #SystemsProgramming #BareMetal #TechAnimation #Hardware