[Dovecot] Re: Group-based filesystem quota

[Geo Carncross]

On Fri, 2006-06-23 at 09:27 +0200, Steffen Kaiser wrote:
> On Fri, 23 Jun 2006, Scott Alter wrote:
> 
> > name and the group name must currently be the same.  Does anyone know of a 
> > way to capture the group that the user writes files as?
> 
> Actually, this is not as easy as it sounds, because an user can be member 
> of more than just one group and some filesystems allow to force a 
> particular group on newly created files (e.g. via mount or setgid on the 
> directory). But I suppose that the getegid() style you use in the patch is 
> what most people are using.
> 
> Bye,
> 

Attached is a getfsgid() call that I have used in the past for this very
purpose on Linux. It shouldn't be too hard to make work on other
platforms...

It checks /etc/mtab (should probably also check /etc/mnttab, but none of
my systems use that anymore), checks setgid bit on dir, and falls back
on getegid()

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