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Message-ID: <414D3A08.6040803@x-ray.at>
Date: Sun, 19 Sep 2004 09:49:28 +0200
From: Reini Urban <rurban AT x-ray DOT at>
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To: cygwin AT cygwin DOT com
CC: Robert Menschel <Cygwin AT Menschel DOT net>
Subject: Re: rbldnsd
References: <23597 DOT 151 DOT 198 DOT 55 DOT 121 DOT 1095536479 DOT squirrel AT webmail DOT sosdg DOT org> <839226679 DOT 20040918163916 AT Menschel DOT net>
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Robert Menschel schrieb:
> 5) I then created /usr/sbin/rbldnsd.sh:
> /usr/sbin/rbldnsd -u system:system -p /var/run/rbldnsd.pid -c 60m -f    \
>       -r /var/rbldnsd -b 127.0.0.1/53                                   \
>       ws.surbl.org:dnset:ws.surbl.org.rbldnsd                           \
>       sc.surbl.org:dnset:sc.surbl.org.rbldnsd                           \
>       list.dsbl.org:ip4set:list.dsbl.org.rbldns >/var/tmp/rbldnsd.log

-u system:system is for running as windows service, via cygrunsrv.
be sure to enable permissions for uid/gid 18 (=system) to all needed files.

> 7) Executing the script as above, manually, I get the error message:
> rbldnsd: unable to setuid(18:18): Permission denied
> where /etc/passwd shows user SYSTEM as user 18, and /etc/group shows
> SYSTEM as group 18. That surprises me, since as the one and only user on
> this system, I have root privileges, and I would have through the setuid
> would have worked.

SYSTEM is the user context in which windows runs services, something 
like the unix root. but setuid(18) will not work.
it must be run through cygrunsrv (as service).
you can also test it via the "sysbash trick".
http://sources.redhat.com/ml/cygwin/2004-08/msg01177.html

> 8) If I remove the -u system:system parameter, I get
> rbldnsd: unable to stat file `ws.surbl.org.rbldnsd': No such file or directory
> rbldnsd: unable to stat file `sc.surbl.org.rbldnsd': No such file or directory
> rbldnsd: unable to stat file `list.dsbl.org.rbldns': No such file or directory
> rbldnsd: zone ws.surbl.org: zone will not be serviced
> rbldnsd: zone sc.surbl.org: zone will not be serviced
> rbldnsd: zone list.dsbl.org: zone will not be serviced
> rbldnsd: zone loading errors, aborting
> 
> Note that the /var/rbldnsd directory has these permissions:
> drwxr-xr-x+   2 Owner    None            0 Sep 11 22:57 /var/rbldnsd/

either the current user has no perms to these files, or rbldnsd tries a 
setuid(0).

chgrp 18 /var/rbldnsd/*
-- 
Reini Urban
http://xarch.tu-graz.ac.at/home/rurban/

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