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On 07/06/2012 05:34 AM, suvayu ali wrote:
> Hi Daniel,
>
> On Thu, Jul 5, 2012 at 12:27 PM, Daniel J Walsh <dwalsh@xxxxxxxxxx> wrote:
>> After turning on full auditing can you try it again and get the full
>> AVC, including the PATH record.
>
> On a freshly booted system, I turned on full auditing like this:
>
> # auditctl -w /etc/shadow -p w
>
> Then I started openafs like this:
>
> # systemctl start openafs.service
>
> which generated an AVC denial (output below).
>
> # ausearch -m avc -ts recent
>
> time->Fri Jul 6 11:20:49 2012
>
> type=PATH msg=audit(1341566449.720:133): item=0 name="/etc/mtab"
> inode=36536 dev=00:03 mode=0100444 ouid=0 ogid=0 rdev=00:00
> obj=system_u:system_r:afs_t:s0
>
> type=CWD msg=audit(1341566449.720:133): cwd="/"
>
> type=SYSCALL msg=audit(1341566449.720:133): arch=c000003e syscall=2
> success=no exit=-13 a0=42402b a1=80442 a2=1b6 a3=238 items=1 ppid=2752
> pid=2753 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
> fsgid=0 tty=(none) ses=4294967295 comm="afsd" exe="/usr/sbin/afsd"
> subj=system_u:system_r:afs_t:s0 key=(null)
>
> type=AVC msg=audit(1341566449.720:133): avc: denied { dac_override } for
> pid=2753 comm="afsd" capability=1 scontext=system_u:system_r:afs_t:s0
> tcontext=system_u:system_r:afs_t:s0 tclass=capability
>
> Another strange thing, running systemctl status tells me "Can't open
> /etc/mtab for writing (errno 13); not adding an entry for AFS", but I see
> that /etc/mtab has the following line:
>
> AFS /afs afs rw,relatime 0 0
>
> I hope I have provided all the required information.
>
ls -l /etc/mtab It should be world readable.
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