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layout: doc
title: SystemDoc
permalink: /doc/SystemDoc/
redirect_from: /wiki/SystemDoc/
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System Documentation for Developers
===================================

1.  Fundamentals:
    1.  Qubes OS Architecture v0.3 [(pdf)](http://files.qubes-os.org/files/doc/arch-spec-0.3.pdf) (The original 2009 document that started this all...)
    2.  [Security-critical elements of Qubes OS](/doc/SecurityCriticalCode/)
    3.  Qubes RPC framework (qrexec):
        1.  [The Qubes RPC/Service API](/doc/Qrexec/)
        2.  Example for writing a qrexec service in Qubes OS [blog post](http://theinvisiblethings.blogspot.com/2013/02/converting-untrusted-pdfs-into-trusted.html)
        3.  [qrexec implementation in Qubes R2](/doc/Qrexec2Implementation/)
        4.  [qrexec implementation in Qubes R3/Odyssey](/doc/Qrexec3Implementation/)

    4.  [Qubes GUI virtualization protocol](/doc/GUIdocs/)
    5.  [Networking in Qubes](/doc/QubesNet/)
    6.  [Implementation of template sharing and updating](/doc/TemplateImplementation/)

2.  Services:
    1.  [Inter-domain file copying](/doc/Qfilecopy/)
    2.  [Dynamic memory management in Qubes](/doc/Qmemman/)
    3.  [Implementation of DisposableVMs](/doc/DVMimpl/)
    4.  [Article about disposable VMs](http://theinvisiblethings.blogspot.com/2010/06/disposable-vms.html)
    5.  [Dom0 secure update mechanism](/doc/Dom0SecureUpdates/)
    6.  [VM secure update mechanism?](/doc/VMSecureUpdates/)

3.  Debugging:
    1.  [Profiling python code](/doc/Profiling/)
    2.  [Test environment in separate machine for automatic tests](/doc/TestBench/)
    3.  [Automated tests](/doc/AutomatedTests/)
    3.  [VM-dom0 internal configuration interface](/doc/SystemDoc/VMInterface/)
    4.  [Debugging Windows VMs](/doc/WindowsDebugging/)

4.  Building:
    1.  [Building Qubes](/doc/QubesBuilder/)
    2.  [Development Workflow](/doc/DevelopmentWorkflow/)
    3.  [KDE Dom0 packages for Qubes](/doc/KdeDom0/)
    4.  [How to build Qubes installation ISO](/doc/InstallationIsoBuilding/)
    5.  [Building USB passthrough support (experimental)](/doc/USBVM/)
    6.  [Building a TemplateVM based on a new OS (ArchLinux example)](/doc/BuildingNonFedoraTemplate/)
    7.  [Building the Archlinux Template](/doc/BuildingArchlinuxTemplate/)