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Getting Started

Introduction to DragonOS

Building DragonOS

Developing DragonOS with Nix

Developing DragonOS with devcontainer

DragonOS Mirror Site

Kernel Layer

Kernel Compilation Configuration

Kernel Compilation Configuration Guide

Target Architecture Configuration

Bootloader

Kernel Boot Command Line Parameters

Core API Documentation

DragonOS Kernel Core API

Atomic Variables

Type Conversion Library API

Notifier Chain Notification Chain

Soft Interrupt

Interrupts and Bottom Halves

tasklet

DragonOS Workqueue Mechanism Design Document

Locks

Types of Locks and Their Rules

Spinlock

RwLock Read-Write Lock

mutex (Mutual Exclusion Lock)

RwSem Read-Write Semaphore

RCU

DragonOS RCU Architecture

RCU Segmented Callback Queues

DragonOS SRCU Design Principles

Process Management Module

kthread Kernel Threads

Loader

Principle of DragonOS Multi-threaded Exec (De-thread) Mechanism

DragonOS Scheduling

APIs Related to Process Scheduler

APIs Related to the Completely Fair Scheduler

FIFO Scheduler

APIs Related to Real-Time Process Scheduler

Kernel Timer

DragonOS Wait Queue Mechanism

Interprocess Communication

Signal

IPC Namespace

Restartable Sequences (rseq) Mechanism

Memory Management

Introduction to the Memory Management Module

Memory Allocation Guide

MMIO

Secure Memory Copy Scheme Based on Exception Table

OOM Killer Design

File System

Overview

DragonOS inotify: User Semantics and Architecture

DragonOS FUSE Architecture Design

Virtiofs Benchmark Runbook

VFS Virtual File System

Design

Mount Propagation Mechanism

VFS API Documentation

Mountable Filesystem

ProcFS

Proc Mount Export Interface

SysFS

KernFS

Union Filesystem

overlayfs

Kernel Debug Module

Kernel Stack Traceback

How to Use GDB to Debug the Kernel

Performance Analysis of the Kernel Using DADK

Kernel Testing

dunitest Userspace Test Framework

gVisor System Call Testing

Processor Architecture

x86-64 Related Documentation

USB Legacy Support

Containerization

Union Filesystem

Other Kernel Libraries

Screen Manager (SCM)

Text UI Framework (textui)

unified-init Unified Initialization Library

ID Allocation

Network Subsystem

Internet Protocol Socket

UNIX

SSH Support

Design Documentation of NAPI and NetNamespace Polling Mechanism in DragonOS

Kernel Tracing Mechanism

Tracepoints

DragonOS Runtime Text Patching: Principles, Usage, and Safety Boundaries

kprobe

Uprobe: Dynamic Probes for User Space

eBPF

System Calls

System Call Table Implementation Plan

Design Documentation for sys_capget / sys_capset

Device

Linux tty Devices

Loop Device Architecture Design

Application Layer

User-space Build Documentation (DADK)

Quick Start Guide for Rust Application Development

Developing C/C++ Applications for DragonOS

Quickly package an app with DADK

Complete DADK documentation

User-space Build Documentation (Nix)

DADK RootFS Manifest Configuration (Non-Nix)

From Software Packages to RootFS Image

Add Programs / Add Custom Programs!

Development Guide

Nix Tips

Contributing Documentation

Q&A

Frequently Asked Questions

Common Issues During Build

DragonOS Community

Contributing to Development

How to contribute

C Language Code Style

Rust Language Code Style

Code Commit Guidelines

Get in Touch with the Community

Release Notes

V0.4.0

V0.3.0

V0.2.0

V0.1.10

V0.1.9

V0.1.8

V0.1.7

V0.1.6

V0.1.5

V0.1.4

V0.1.3

V0.1.2

V0.1.1

V0.1.0

On this page

Containerization

This is the documentation related to containerization in DragonOS.

Edit this page on GitHub

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VFS Virtual File System

ProcFS

Union Filesystem

x86-64 Related Documentation

Containerization ​

Containerization