Message-ID: <492FE98B.3000509@redhat.com>
Date:	Fri, 28 Nov 2008 07:52:27 -0500
From:	Daniel J Walsh <dwalsh@...hat.com>
To:	"Justin P. Mattock" <justinmattock@...il.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	SE Linux <selinux@...ho.nsa.gov>,
	tresys <refpolicy@....tresys.com>
Subject: Re: [refpolicy] [RE:] pull request: wireless-2.6 2008-11-25

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Justin P. Mattock wrote:
> apologize for not sending the original post
> (accidentally removed it);
> from the post:
> http://lkml.org/lkml/2008/11/25/353
> I take it this is the reason for the avc's that are being created,
> and always denied: <example>
> 
> 
> -- [   26.659175] type=1400 audit(1227658649.652:3): avc:  denied
> { sys_module } for  pid=2631 comm="wpa_supplicant" capability=16
> scontext=system_u:system_r:system_dbusd_t:s0
> tcontext=system_u:system_r:system_dbusd_t:s0 tclass=capability
> [   26.659351] type=1300 audit(1227658649.652:3): arch=40000003
> syscall=54 success=no exit=-19 a0=9 a1=8933 a2=bfb6ff9c a3=bfb6ff9c
> items=0 ppid=1 pid=2631 auid=4294967295 uid=0 gid=0 euid=0 suid=0
> fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295
> comm="wpa_supplicant" exe="/sbin/wpa_supplicant"
> subj=system_u:system_r:system_dbusd_t:s0 key=(null)
> [   30.131444] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
> [   30.140774] input: justinmattocks mouse #1 as /class/input/input10
> [   30.194328] generic-bluetooth 0005:0000:0000.0004: input: BLUETOOTH
> HID v0.00 Mouse [justinmattocks mouse #1] on 00:17:F2:B4:BC:F5
> [   33.361691] [drm] Setting GART location based on new memory map
> [   33.363216] [drm] Loading R500 Microcode
> [   33.363295] [drm] Num pipes: 1
> [   33.363309] [drm] writeback test succeeded in 1 usecs
> [   84.658454] wlan0: authenticate with AP 00:1e:2a:00:67:f0
> [   84.664222] wlan0: authenticated
> [   84.664230] wlan0: associate with AP 00:1e:2a:00:67:f0
> [   84.666704] wlan0: RX AssocResp from 00:1e:2a:00:67:f0 (capab=0x431
> status=0 aid=34)
> [   84.666710] wlan0: associated
> [   92.657555] type=1400 audit(1227658715.650:4): avc:  denied
> { sys_admin } for  pid=3042 comm="mount" capability=21
> scontext=system_u:system_r:system_dbusd_t:s0
> tcontext=system_u:system_r:system_dbusd_t:s0 tclass=capability
> [   92.657594] type=1300 audit(1227658715.650:4): arch=40000003
> syscall=21 success=no exit=-1 a0=8061818 a1=8061828 a2=805a521
> a3=c0ed1000 items=0 ppid=3033 pid=3042 auid=4294967295 uid=0 gid=0
> euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295
> comm="mount" exe="/bin/mount" subj=system_u:system_r:system_dbusd_t:s0
> key=(null)
> [   92.661764] type=1400 audit(1227658715.660:5): avc:  denied
> { sys_admin } for  pid=3044 comm="mount" capability=21
> scontext=system_u:system_r:system_dbusd_t:s0
> tcontext=system_u:system_r:system_dbusd_t:s0 tclass=capability
> [   92.661820] type=1300 audit(1227658715.660:5): arch=40000003
> syscall=21 success=no exit=-1 a0=8061818 a1=8061828 a2=805a521
> a3=c0ed1000 items=0 ppid=3033 pid=3044 auid=4294967295 uid=0 gid=0
> euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295
> comm="mount" exe="/bin/mount" subj=system_u:system_r:system_dbusd_t:s0
> key=(null)
> 
> allow rules are as is:
> 
>  #============= system_dbusd_t ==============
> allow system_dbusd_t self:capability { sys_module sys_admin };
> 
> I do have debug enabled for ath9k;
> I'll look at the policy(once the wireless is committed)
> to see if this was the resulting... and/or happening.
> 
> regards;
> 
> 
> Justin P. Mattock <Justinmattock@...il.com>
> 
> _______________________________________________
> refpolicy mailing list
> refpolicy@....tresys.com
> http://oss.tresys.com/mailman/listinfo/refpolicy
You want to have a transition defined between dbus and wpa_supplicant.
In Fedora wpa_supplicant is labeled NetworkManager_exec_t and
system_dbusd_t transitions to NetworkManager_r when executing it.

In the future dbus is going to start a lot of System Services so each
needs a transition rule or else dbus will approacue an unconfined domain.
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