Version Control with Subversion, 2nd Edition

Name

pre-unlock — Notification of a path unlock attempt.

Description

The pre-unlock hook runs whenever someone attempts to remove a lock on a file. It can be used to create policies that specify which users are allowed to unlock particular paths. It’s particularly important for determining policies about lock breakage. If user A locks a file, is user B allowed to break the lock? What if the lock is more than a week old? These sorts of things can be decided and enforced by the hook.

If the pre-unlock hook program returns a nonzero exit value, the unlock action is aborted and anything printed to stderr is marshaled back to the client.

Input parameter(s)

The command-line arguments passed to the hook program, in order, are:

1. Repository path

2. Versioned path that is to be locked

3. Authenticated username of the person attempting the lock

Common uses

Access control.