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Version Control with Subversion, 2nd Edition
book

Version Control with Subversion, 2nd Edition

by C. Michael Pilato, Ben Collins-Sussman, Brian W. Fitzpatrick
September 2008
Intermediate to advanced content levelIntermediate to advanced
432 pages
13h 57m
English
O'Reilly Media, Inc.
Content preview from Version Control with Subversion, 2nd Edition

Supporting Multiple Repository Access Methods

You’ve seen how a repository can be accessed in many different ways. But is it possible—or safe—for your repository to be accessed by multiple methods simultaneously? The answer is yes, provided you use a bit of foresight.

At any given time, these processes may require read and write access to your repository:

  • Regular system users using a Subversion client (as themselves) to access the repository directly via file:// URLs

  • Regular system users connecting to SSH-spawned private svnserve processes (running as themselves), which access the repository

  • An svnserve process—either a daemon or one launched by inetd—running as a particular fixed user

  • An Apache httpd process, running as a particular fixed user

The most common problem administrators run into is repository ownership and permissions. Does every process (or user) in the preceding list have the rights to read and write the repository’s underlying data files? Assuming you have a Unix-like operating system, a straightforward approach might be to place every potential repository user into a new svn group, and then make the repository wholly owned by that group. But even that’s not enough, because a process may write to the database files using an unfriendly umask—one that prevents access by other users.

So, the next step beyond setting up a common group for repository users is to force every repository-accessing process to use a sane umask. For users accessing the repository directly, you can ...

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Publisher Resources

ISBN: 9780596510336Errata Page