Subversion Authz config on Apache

Question

I'm trying to restrict the access to my subversion repositories to certain users. However I can't get it to work the way I want.

I have three repositories. Let's call them repo1, repo2 and repo3. I also have three users. user1, user2 and user3.

What I want is that all the users to read/write to repo1 and only user1 read/write repo2 and repo3. I don't want user2 and 3 to be able to read repo2 and repo3. Now I thought that the following configuration should work:

[groups]
group1 = user1, user2, user3

[/repo1]
@group1 = rw

[/repo2]
@group1 = 
user1 = rw

[/repo3]
@group1 =
user1 = rw

[/]
* = r

However, with this configuration user2 and user3 can still access all repo's and none of the users is allowed to commit/change any files.

Can anyone tell me what I do wrong?

Edit

Thanks to the correct answer I've got it working. Might be useful for other users.

[groups]
group1 = user1, user2, user3

[repo1:/]
@group1 = rw

[repo2:/]
user1 = rw

[repo3:/]
user1 = rw

Answer 1

Definition of repo in sections

From SVN Book

If you're using the SVNParentPath directive, it's important to specify the repository names in your sections. If you omit them, a section such as [/some/dir] will match the path /some/dir in every repository.

Section format is well documented:

the value of the section names is either of the form [repos-name:path] or of the form [path]

I.e your [/repoN] define path /repoN inside every and each repo, not repository. Use [repoN:/] for appropriate repository's root