KUDOS Documentation

KUDOS is a skeleton operating system for exploring operating systems concepts. It is intended for:

1. teaching operating system concepts, and
2. to serve as a baseline for open-ended student projects.

• Introduction
  • Expected Background Knowledge
  • How to Use This Documentation
  • Exercises
  • References
• Source Code Overview
  • kudos
  • userland
• Using KUDOS
  • Compiling the kernel
  • Compiling the userland programs
  • Writing to the virtual disk
  • Booting the system
  • Example: Compile and run halt
• How KUDOS Bootstraps
  • Booting KUDOS/x86_64 with GRUB2
  • Starting Subsystems
• System Calls
  • How System Calls Work
  • System Calls in KUDOS
  • Exercises
• Kernel Threads
  • Kernel Threads API
  • Controlling Kernel Threads
• Low-Level Synchronization
  • Interrupts
  • Spinlocks
  • Exercises
• Advanced Synchronization
  • Sleep Queue
  • Semaphores
  • Exercises
• Device Drivers
  • Interrupt Handlers
  • Device Abstraction Layers
  • Device Driver Initialization
  • Generic Character Device
  • Generic Block Device
• Built-in Drivers
  • TTY
  • Polling TTY Driver
  • Interrupt-driven TTY Driver
  • Disk Driver
  • Timer Driver
  • Metadevice Drivers
  • Exercises
• Filesystems
  • Filesystem Conventions
  • Filesystem Layers
• Virtual Filesystem
  • Return Values
  • Limits
  • Internal Data Structures
  • VFS Operations
  • File Operations
  • Filesystem Operations
• Trivial Filesystem
  • TFS Driver Module
• Appendix
  • More about the tfstool