[Samba] Rename to open file doesn't work, why?

[Jeremy Allison]

On Mon, Jul 28, 2008 at 07:02:52AM +0200, Wilhelm Meier wrote:
> Am Montag, 28. Juli 2008 schrieb Michael Heydon:
> > Wilhelm Meier wrote:
> > > <snip>
> > > On a local linux filesystem like ext2/3 one can rename a file to
> > > an existing, already open file.
> > >
> > > But this doesn't  work on a cifs-mounted samba-share
> > > <snip>
> >
> > The reason this works with ext2 is that as long as you hold an open
> > file descriptor a deleted file is still accessible (rename is
> > essentially a delete and then a move).
> >
> > While it might be theoretically possible for this to work unix to
> > unix, Windows doesn't deal with deleted files the same way (it
> > prevents you from deleting files as long as they are open), and so
> > it's quite possible that SMB/CIFS doesn't understand the concept of
> > having a deleted file open.
> 
> Yes, with a windows file server this is impossible. 
> 
> But I thought the samba unix extensions should make that possible.
> 
> Otherwise samba/cifs is unusable as e.g. user-homes, since KDE tends 
> to use this pattern.
> 
> Is there any workaround at the moment?

Can you log a bug with bugzilla.samba.org so I can
track this. Include everything I need to reproduce
(test code preferably) so I can ensure the UNIX
extensions allow this.

Thanks !

Jeremy.