From: cpebenito@tresys.com (Christopher J. PeBenito)
Date: Tue, 02 Sep 2008 09:19:53 -0400
Subject: [refpolicy] Debian: ldd /sbin/udevd, need to use interactive	fds
In-Reply-To: <20080901171232.GA4104@bobek.pm.i.cz>
References: <20080901171232.GA4104@bobek.pm.i.cz>
Message-ID: <1220361593.28287.8.camel@gorn>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

On Mon, 2008-09-01 at 19:12 +0200, V?clav Ovs?k wrote:
> I am running Debian unstable (Sid) with latest refpolicy packaged by
> Russel Coker (2:0.0.20080702-6) with unconfined module (permissive
> mode). I have caught problem with running update-initramfs under
> unconfined user (system initrd image generation). The hook script udev
> is trying to discover libraries used by udev running command "ldd
> /sbin/udev", which emits:
> 
> [  180.506850] type=1400 audit(1219673765.136:5): avc:  denied  { use } for  pid=1944 comm="udevd" path="/dev/tty1" dev=tmpfs ino=998 scontext=unconfined_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:system_r:getty_t:s0 tclass=fd
> [  180.534524] type=1300 audit(1219673765.136:5): arch=40000003 syscall=11 success=yes exit=0 a0=8f93ee8 a1=8f93e68 a2=8f7d008 a3=0 items=0 ppid=1936 pid=1944 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=tty1 ses=4294967295 comm="udevd" exe="/sbin/udevd" subj=unconfined_u:system_r:udev_t:s0-s0:c0.c1023 key=(null)
> 
> One wants to see output from udevd --help e.g. also...
> So attached is a patch.

The denials aren't consistent with 'ldd /sbin/udev', otherwise comm=
would be ldd.  I also can't reproduce this type of denial while using
ldd.  As for 'ldd --help', there shouldn't really be a transition.  In
fact I think Dan may have suggested removing the domain transition from
DIRECT_INITRC and just leave a role transition.

-- 
Chris PeBenito
Tresys Technology, LLC
(410) 290-1411 x150