A hobbyist operating system created from scratch. This project has targeted to build an operating system for the x86-64 multicore processor.
- Features of this project:
- OS Kernel : Bootstrapping, Memory management, Process management and scheduling, GUI System ...
- Toy TCP/IP Stack : Ethernet(E1000), ARP, IP, ICMP, UDP, TCP, DNS, DHCP
- Simple Application : Toy web browser (almost like viewer), Simple telnet client ...
- Example of result
| Operating System | Toy web browser |
|---|---|
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Kernel based on MINT64OS Project
Features of MINT64 OS project:
- 64bit Multicore support
- Memory protection and management with paging
- Multi-level priority-based scheduler and process management
- Simple filesystem based on FAT
- Peripheral devices support (keyboard, mouse, and serial port)
- System call and libraries for user applications
- Application support with ELF format
- GUI system
Boot from USB device, and so(not support in this project)
My goal is to understand inter network communication. So I'm just focused on easy to implement. I derived help from the following documents. But does not implement all of the features and not perfect. I only tested the following scenario.
- Design decision
- All of the frames are passed between processing layers in one buffer when passing a layer boundary.
- All of the frames are queued each module.
- Each protocol module is a thread and they have a own frame queue.
| TCP/IP Stack architecture | Frame (when TCP received segment from IP module) |
|---|---|
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- Scenario
| Scenario Number | Source Host | <------ | Protocol | ------> | Destination Host |
|---|---|---|---|---|---|
| Scenario 1 | Host | <------ | ARP Request / Reply | ------> | Gateway |
| Scenario 2 | Host | <------ | DHCP Configuration | ------> | Gateway |
| Scenario 3 | Host | <------ | DNS Request / Response | ------> | DNS Server |
| Scenario 4 | Host | <------ | TCP Connection & HTTP 1.1 | ------> | Web Server |
| Scenario 5 | Host | <------ | TCP Connection & Telent | ------> | Telnet Server |
- Documents
- Network Stack - OS Dev Wiki
- ARP - RFC 826 - An Ethernet Address Resolution Protocol
- IP - RFC 791 - INTERNET PROTOCOL
- ICMP - RFC 792 - INTERNET CONTROL MESSAGE PROTOCOL
- UDP - RFC 768 - User Datagram Protocol
- TCP - RFC 793 - TRANSMISSION CONTROL PROTOCOL
- DNS - RFC 1035 - DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION
- DHCP - RFC 2131 - Dynamic Host Configuration Protocol
Toy web browser based on Robinson-C. Robinson-C is C implementation of Matt Brubeck's Robinson HTML engine.
| Toy browser engine pipeline | Output of test HTML |
|---|---|
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