Mail semantics: mail group, permissions, MTA/MDA suid/sgid and the like
Bill Nottingham
notting at redhat.com
Thu Apr 5 21:25:17 UTC 2007
Axel Thimm (Axel.Thimm at ATrpms.net) said:
> > > a) Does every MDA and MUA need to do both locking mechanisms or is
> > > dotlocking the fallback to fcntl? The latter would be an issue, so
> > > it should probably be both for every MDA/MUA.
> >
> > Short answer is use fcntl or die.
>
> OK, then we should remove current dotlock functionality from MTA/MDAs?
> I'm fine with that, it just needs to be a global and wide known policy
> so that MTA1 doesn't dotlock while MDA5 fcntl-locks and both think
> they own the mbox.
The long-standing policy in Core was to unly use fcntl - it's the
one thing that should be supported by all clients, stands a chance
of working over NFS, etc. So, explicitly codifying this makes sense.
Bill
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