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From: Eric Blake <ebb9@byu•net>
To: git@vger•kernel.org
Subject: Re: Git-SVN on Cygwin: svn+ssh good, https awkward
Date: Thu, 23 Apr 2009 17:58:24 +0000 (UTC)	[thread overview]
Message-ID: <loom.20090423T175124-165@post.gmane.org> (raw)
In-Reply-To: op.usulh7a71e62zd@balu.cs.uni-paderborn.de

Matthias Andree <matthias.andree <at> gmx.de> writes:

> 3. UNDERLYING CYGWIN LIMITATIONS
> 
> * unlink a file and subsequent creation of a new file in the same location  
> is not supported.
> 
> * "delete on close" (unlinking an open file) is supported.

These last two points are old information.  I would first recommend that you 
try running the new cygwin 1.7 (still in beta), where unlink() semantics have 
been greatly improved (you can actually unlink() an in-use file and recreate a 
new file by the same name while the old handle is still open).

http://cygwin.com/#beta-test

> 4. FIX SUGGESTIONS AND QUESTIONS
> 
> Can we defer unlink()ing the tempfile until all handles to it are closed?
> 
> Can we let complete and wait for all processes that hold handles to the  
> tempfile.tmp file before attempting to create a new copy?
> 
> Can we use unique tempfile names (timestamps, counter, random number  
> generator) instead of the hardcoded "tempfile.tmp"? This is probably a  
> good idea anyways to evade symlink attacks.

Although newer cygwin may fix your particular problem, this is not a bad 
suggestion for msysgit, so I suspect someone may be bothered enough by this to 
write a patch.  I, however, will not be the one doing it.

-- 
Eric Blake

  parent reply	other threads:[~2009-04-23 18:00 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-23 16:31 Git-SVN on Cygwin: svn+ssh good, https awkward Matthias Andree
2009-04-23 16:40 ` Matthias Andree
2009-04-23 17:58 ` Eric Blake [this message]
2009-04-23 18:16   ` Matthias Andree
2009-04-23 18:32   ` Matthias Andree
2009-04-23 19:03 ` Eric Wong
2009-04-24 17:31   ` Matthias Andree
  -- strict thread matches above, loose matches on Subject: below --
2009-04-25 12:04 Gregory Petrosyan
2009-05-12 13:47 ` Constantine Plotnikov

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