Subversion vs. non-writable dirs

Hi,

Subversion seems to get into trouble when trying to add non-writable
directories. I have skimmed through the list of open issues and even
though #2113 and #2425 look similar in their effects, this particular
bug has apparently not been reported yet. I'd like to get feedback from
the list before opening a new issue in the tracker.

I'm using:

   $ svn --version
   svn, version 1.4.2 (r22196)
      compiled Nov 10 2006, 17:39:50

Consider the following scenario:

   $ svnadmin create /tmp/test
   $ svn co file:///tmp/test
   Checked out revision 0.
   $ cd test; mkdir -m 0555 bad # create non-writable dir
   test$ svn add bad
   svn: Can't create directory 'bad/.svn': Permission denied
   test$ svn revert bad
   Reverted 'bad'
   test$ ls -ld .svn
   ls: .svn: No such file or directory
   test$

The revert operation has removed the admin directory from my working
copy.

Worse, if you try this in a working copy where at least one directory is
under version control, the working copy gets wedged:

   $ svnadmin create /tmp/test
   $ svn co file:///tmp/test
   Checked out revision 0.
   $ cd test; mkdir -m 0755 foo; svn add foo; svn ci -m "Add foo."
   A foo
   Adding foo

   Committed revision 1.
   test$ mkdir -m 0555 bad
   test$ svn add bad
   svn: Can't create directory 'bad/.svn': Permission denied
   test$ svn revert bad
   svn: Try 'svn revert --recursive' instead?
   svn: Unable to lock 'foo'
   test$ svn revert --recursive bad
   svn: Try 'svn revert --recursive' instead?
   svn: Unable to lock 'foo'
   test$ svn cleanup
   svn: 'bad' is not a working copy directory
   test$ svn diff
   svn: Directory 'bad/.svn' containing working copy admin area is missing
   test$

If I remove the 'bad' directory manually, then 'svn cleanup', then
'svn rm bad', the working copy returns to normal (probably because the
bad directory then gets removed from the top-level entries file).

Thanks,

-- 
Romain Francoise <romain@orebokech.com> | The sea! the sea! the open
it's a miracle -- http://orebokech.com/ | sea! The blue, the fresh, the
                                        | ever free! --Bryan W. Procter
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