[syslog-ng]source socket keepalive patch suggestion

[Ted_Rule@flextech.co.uk]

This problem exist for me on all glibc incarnations as far as I'm aware.

It also exists in Perl5 / Syslog:pm - but I wrote a local patch for myself for
that.

Admittedly, I probably could write a patch to glibc, but then I'd have to get it
into the real glibc
source so that it doesn't get overwritten by every new glibc RPM release.

I just thought it would be easier all round to provide for as near 'non-stop'
functionality across syslog-ng/SIGHUP
as possible.




Ted





"Ed Ravin" <eravin@panix.com> on 11/09/2002 18:34:42

Please respond to syslog-ng@lists.balabit.hu

To:   syslog-ng@lists.balabit.hu
cc:    (bcc: Ted Rule/160GPS/Flextech/UK)

Subject:  Re: [syslog-ng]source socket keepalive patch suggestion



Ted_Rule@flextech.co.uk writes:
>
> I previously enquired whether it would be possible to allow for a keep-alive
> option
> on Unix DGRAM sockets to help avoid the situation on some platforms when
daemons
> such as sendmail have the /dev/log socket 'whipped from under them' during
> syslog-ng/SIGHUP.

Why not fix the libc code on those platforms so it does basic sanity
checking on the socket, and re-opens the socket when it discovers that
its cached filehandle for /dev/log is invalid?  I encountered this on
NetBSD and it was an easy library fix (it's patched in all current
releases (1.5.3 and 1.6 candidates) - what OS are you using?

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