Re: mbox ownership

* andre deblire ([email protected]) [040416 16:56]:
> I use the default locking on Linux (RedHat 8). Is it safe ?
> 
> I didn't find a thread about this topic in the mailing list (searching
> Kees Dekker). Where can I find more information about safe
> locking/platform  ?

I always hope someone else answers the questions, but this doesn't happen
that often :(  Kees is actively digging, so we do not communicate
via the list.  Default locking is DotLock, which is what most systems
use. When you use the REPLACE 'write_policy' (the dedault), your owner
will change, and it will not protect you.  With INPLACE, it will (and
the owner will not change, it is faster, but may cause problems when
the system crashes during a folder update)


> > -----Original Message-----
> > * andre deblire ([email protected]) [040413 00:05]:
> > > I found a workaround not extensively tested, but it seems to work :
> > > ########
> > > $Folder->write();
> > > chown(...);
> > > $Folder->close();
> > > ########
> > > 
> > > Do you see a problem with this ?
> > 
> > When you use proper locking, this may work.  However, on some
> > platforms and with some locking methods, the folder lock is lost
> > after a $folder->write.  In those cases (which Kees Dekker is
> > trying to solve) your work-around isn't 100% safe.
-- 
               MarkOv

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drs Mark A.C.J. Overmeer                                MARKOV Solutions
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