Difference between revisions of "New Project Participants"

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* over HTTPS
* over HTTPS
* over SSH
* over SSH
For detailed usage information, head over to our [[Subversion Primer]].
== Over HTTPS ==
== Over HTTPS ==

Revision as of 01:24, 13 May 2008

This page contains details for newcomers to the XINU project who want to get started working in the lab and coding with XINU.


The code for XINU is stored in a Subversion code repository. The layout of this repository is (about) as follows:

       URI ::= svn+ssh://svn@xinu.mscs.mu.edu/<repo>
             | http[s]://xinu.mscs.mu.edu/svn/<repo>

    <repo> ::= mips/<svn-dir>
             | intel/<svn-dir>
             | ppc/<svn-dir>
             | debugger/<svn-dir>
             | xinu-tools/<tool-dir>
             | projects/<project-dir>

<tool-dir> ::= unix/<svn-dir>
             | windows/<svn-dir>

 <svn-dir> ::= trunk | branches | tags

<proj-dir> ::= ...

You have two ways of accessing the code:

  • over HTTPS
  • over SSH

For detailed usage information, head over to our Subversion Primer.


To access the repository over HTTPS you'll need to contact the MULUG system administrator and he/she will generate a password for you (it can be changed later, do not fear). Once you have an account, you can access the repositories at:


Or some sort of URL.

Over SSH

If you want to access the code via SSH, you will need to create and register your public key with the 'svn' user on MULUG. There is good document that details generating an SSH keypair at:


After the key is generated please email (or link) your public SSH key to the current repository administrator to be added.

Once your key has been registered, you can do a test checkout with the following command:

svn co svn+ssh://svn@xinu.mscs.mu.edu/mips/trunk xinu

You can also switch an existing working copy with the following from your working copy's directory:

FROM=`svn info | grep ^URL | awk '{ print $2 }'`
svn switch --relocate $FROM svn+ssh://svn@xinu.mscs.mu.edu/mips/trunk
unset FROM

You will be asked for the passphrase that you specified for your private key every time you perform a svn command that needs the server. This is because svn is not locally caching your password in plaintext as it was before (no plaintext cache = better). I highly recommend using a memory-caching tool like ssh-agent to prevent having to repeatedly enter your passphrase.


Trac has several nice ways of visualizing activity in the Subversion repository, including a source code browser and a timeline. It also has a wiki, which we try to use for internal documentation, and at it's center is an issue tracking system, which I suggest we consider as a way to consolidate our various and sundry todo lists.


As for user accounts, if you have a password to access the repository via HTTPS it is the same for logging into trac. If you do not have on, please email the MULUG system administrator to set one up or generate your own with the following command:

htdigest -c <mypassfile> "XINU Project Repositories" <username>

After your account has been setup you can simply visit the trac URI, log in, and start editing!