Date: Thu, 2 Nov 2000 21:00:03 -0800 (PST) From: Garance A Drosihn <drosih@rpi.edu> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/7973: lpd: Bad control file owner in case of remote printing Message-ID: <200011030500.VAA29280@freefall.freebsd.org>
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The following reply was made to PR bin/7973; it has been noted by GNATS.
From: Garance A Drosihn <drosih@rpi.edu>
To: freebsd-gnats-submit@FreeBSD.org
Cc: cejkar@dcse.fee.vutbr.cz
Subject: Re: bin/7973: lpd: Bad control file owner in case of remote
printing
Date: Thu, 2 Nov 2000 23:55:11 -0500
Rudolf Cejka wrote:
> Problem is with /var/spool/lpd/*/cf* control files. If file is
> printed locally (via lpr), cf* file is created with right
> permissions:
> ls -l => -rw-rw---- 1 daemon daemon ... cf*.
> But if file is printed remotely and cf* are creates by lpd,
> cf* files have bad permissions:
> ls -l => -rw-rw---- 1 root daemon ... cf*.
>
> It has bad impact on print filters ("if" in printcap) which
> extract some information from cf* control files. Filters
> are executed with these ids: uid=1 (daemon) gid=0 (wheel).
> They do not belong to wheel group.
I understand the issue you are talking about, but I would argue
that print filters have no business reading the control files.
The control files are "a protocol" of sorts for an lpr process
(or some other lpd process) to communicate with an lpd process.
Imagine what happens if we want to change the format of cf
files, which we may very well want to do (if we accept jobs
from via protocols other than lpd). I don't think print
filters should have any idea of the format of cf files.
So, my question to you is, What is the exact information that
your print filters need from the cf-files? For your print
filters, would it be better if they picked up that information
(whatever you need) via some environment variables that lpd
might set before starting up your filter?
This is the solution I would prefer to implement.
--
---
Garance Alistair Drosehn = gad@eclipse.acs.rpi.edu
Senior Systems Programmer or gad@freebsd.org
Rensselaer Polytechnic Institute or drosih@rpi.edu
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