[Haskell-cafe] hslogger and syslog-ng

Magnus Therning magnus at therning.org
Sun Aug 23 15:38:03 EDT 2009

Brandon S. Allbery KF8NH wrote:
> On Aug 23, 2009, at 14:05 , Magnus Therning wrote:
>> Brandon S. Allbery KF8NH wrote:
>>>> Oh, though logging to a dgram socket doesn't seem to work either.
>>>> I added the following line to /etc/syslog-ng.conf:
>>>> unix-dgram("/dev/dlog");
>>>> Restarted it and checked that the socket was there.  Then I ran the 
>>>> following:
>>>> > :m +System.Log.Logger
>>>> > :m +System.Log.Handler.Syslog
>>>> > sl <- openlog_local "/dev/dlog" "foo" [PID] USER DEBUG
>>>> > updateGlobalLogger rootLoggerName (addHandler sl)
>>>> > warningM "bar" "test"
>>>> *** Exception: sendTo: protocol error (Protocol wrong type for socket)
>>> Hm.  hslogger uses a hardcoded 0 instead of PF_UNSPEC (not that 
>>> Network.BSD exports PF_*, and it too hardcodes defaultProtocol as 0) 
>>> but a spot check of system under my control suggests it should work 
>>> most places.
>> What kind of systems to you have under your control?
> Various SuSE Linux, Solaris 8/9/10, Mac OS X (should be mostly the same 
> as FreeBSD at this level).

It seems to be depending on the syslog daemon to some extent.  Debian with 
sysklogd: no problems, Debian with syslog-ng: exactly the problem I see on my 
Arch system.

I've raised a bug on the dev site: 


Magnus Therning                        (OpenPGP: 0xAB4DFBA4)
magnus@therning.org          Jabber: magnus@therning.org
http://therning.org/magnus         identi.ca|twitter: magthe

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