What source control systems have file level permissions?

Question

I might propose migrating away from VSS due to its inability to grant and deny permissions at the file level. The question is what source control systems allow this.

Update I am marking the SVN answer as the "correct" one, since it had the most feedback. However, there is no correct answer. I will make my recommendations to management based on all your feedback.

Answer 1

subversion does too, but the ACL is managed in a configuration file

Answer 2

Perforce does.