Re: [bug-mailutils] Lock with external program question

[Kostas Zorbadelos]

On Thu, Sep 22, 2005 at 12:51:57PM -0400, Alain Magloire wrote:
>  
> An interesting point, I guess it would be nice to do multiple locking in
> general.  
> It is probably not possible to now when the mailbox is on a
> distributed file system, doing the kernel locking __and__ the dot-locking
> could be a good thing.  

I was really wondering, I look in various places and I see that there
are problems with fcntl locking over NFS. Is this because there are
broken implementations of NFS servers/clients? In our setup we have a
working fcntl locking mechanism over NFS...

> Changing the code in locker.c to allow this may be
> an option i.e. it is no longer exclusive. 
> 

This seems like a good idea.
  
> You could temper with the options of sieve asking for a specific/multiple
> lock types when it opens the mailbox or save the file in a different folder:
> 
> I also vaguely remember extensions to RFC3028 for sieve asking for a new
> flags extension for "fileinto" action.  We could specify the implementation
> dependent flag ... not sure if it is a good idea.
> 

I don't know about the extension and whether it can be utilized
either. 

Thanks,
Kostas

-- 
  Kostas Zorbadelos
  Systems Designer/Developer, Otenet SA 
  address@hidden contact: kzorba (at) otenet.gr
  
  Out there in the darkness, out there in the night
  out there in the starlight, one soul burns brighter
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