Milter-greylist

On Wed, Sep 05, 2007 at 10:46:36AM -0400, Jeff A. Earickson wrote:
> On Wed, 5 Sep 2007, Johann Klasek wrote:
> 
> > Date: Wed, 5 Sep 2007 15:49:53 +0200
> > From: Johann Klasek <johann@...>
> > Reply-To: milter-greylist@yahoogroups.com
> > To: milter-greylist@yahoogroups.com
> > Subject: Re: [milter-greylist] crash on db dump (still)
> > 
> > On Thu, Aug 30, 2007 at 07:29:47PM +0200, manu@... wrote:
> >> Jeff A. Earickson <jaearick@...> wrote:
> >>
> >>> I now get this with 4.0b1:
> >>>
> >>>     cannot write dumpfile "/var/milter-greylist/greylist.db-XXn4aOmb":
> >>>     Error 0
> >>
> >> Hum... errno was not set after a failed fdopen? Any Solaris expert that
> >> could explain what is going on?
> >
> > Just for completness:
> >
> > Solaris man page (eg. for fdopen) says (even on Sol 10):
> >
> >     The fdopen() function may fail and not set  errno  if  there
> >     are no free stdio streams.
> >
> >
> > This issue is addressed by
> >
> > http://jk.kom.tuwien.ac.at/~jklasek/software/milter-greylist/mg.stdio-handling.patch
> >
> > which seems not to interfere with other platforms but improves
> > compatibility somehow.
> >
> >
> > Johann Klasek
> 
> Hi,
> 
> I tried this patch a few days ago (Sparc, using gcc 4.2) and it did not
> help at all.  I had the same number of crashes as before.

Sure because the above patch is only a part of a patch cluster
(see http://jk.kom.tuwien.ac.at/~jklasek/software/milter-greylist/milter-greylist-4.0a6.patch
for a compainion patch, slightly different, alas against 4.0a6)
which does *not* resolve the problem with the crashes.

You have to manually add module file_ext.o during the linkage process (Makefile)
and define the macro USE_FD_POOL (e.g. via CFLAGS).

When running log messages like

Sep  5 14:53:19 tuvok milter-greylist: [ID 411381 mail.info] fdopen_ext: get_pool_desc: descriptor 263 reused as 3

should appear ... (grep for "fdopen_ext")

We have this already on heavly used mailservers in a production environment -
seem really to work.

Johann