[cups.general] How to debug cups-lpd?

[Daniel Spannbauer]

Helge Blischke schrieb:
> Daniel Spannbauer wrote:
>>
>> Daniel Spannbauer schrieb:
>>> Michael R Sweet schrieb:
>>>> Daniel Spannbauer wrote:
>>>>> Michael Sweet schrieb:
>>>>>> Daniel Spannbauer wrote:
>>>>>>> Hello,
>>>>>>>
>>>>>>> we have in our System some old machines who are printing over a 
>>>>>>> self-compiled old lpd.
>>>>>>> Now, we want migrate to cups, but the cups-lpd is not printing 
>>>>>>> jobs from our old System.
>>>>>>> According to a tcpdump there is siome input over Port 515, but 
>>>>>>> there is no output in error_log.
>>>>>>>
>>>>>>> Can I start cups-lpd in a way that I'm able to see what cups-lpd 
>>>>>>> is doing or whats wrong?
>>>>>> cups-lpd logs via syslog, so its messages should show up in the normal
>>>>>> syslog file(s)...
>>>>>>
>>>>> Hello Michael,
>>>>>
>>>>> thats right, but the log-level is very poor. Ca I increase it?
>>>> Depending on the OS, you may be able to configure syslogd to log
>>>> debugging messages produced by cups-lpd (although it does not log as
>>>> verbosely as, say, cupsd in debug mode...)
>>> Hmmm, I'm not very firm in syslog-ng so I don't now what to change in 
>>> syslog-ng.conf.
>> Can I do a strace about cups-lpd when it is starting of xinetd? And, 
>> wehen yes: how?
>>
>> Regards
>>
>> Daniel
>>
>>
>>
>>
>>> Regards
>>>
>>> Daniel
>>>
>>>
>>>
>>>
>>>
> 
> Write a wrapper script which launches the cups-lpd under strace
> and configure xinetd to launch this wrapper script instead.
> 

I tried this, but xinetd shows a exec-format-error.

I started a strace -FF on xinetd. This seems to work.
I attached 2 2 Files, containing the strace-output.
cups-falsch shows the Output from a printjob of our system, 
cuprs-richtig from a printjob of the standard-lpd of a old SuSE 8.0-System.

Regards

Daniel



> Helge
> 
> 

-- 
Daniel Spannbauer                         Software Entwicklung
marco Systemanalyse und Entwicklung GmbH  Tel   +49 8333 9233-27 Fax -11
Rechbergstr. 4 - 6, D 87727 Babenhausen   Mobil +49 171 4033220
http://www.marco.de/                      Email ds at marco.de
Geschäftsführer Martin Reuter             HRB 171775 Amtsgericht München
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