From: cpebenito@tresys.com (Christopher J. PeBenito)
Date: Tue, 01 Mar 2011 14:10:56 -0500
Subject: [refpolicy] [PATCH 32/34]: patch to allow mount use kernel file
 descriptors
In-Reply-To: <1298920576.3123.12.camel@tesla.lan>
References: <1297838523.3205.120.camel@tesla.lan>	
	<4D6BB9CC.7060406@tresys.com> <1298920576.3123.12.camel@tesla.lan>
Message-ID: <4D6D44C0.5090700@tresys.com>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

On 02/28/11 14:16, Guido Trentalancia wrote:
> On Mon, 28/02/2011 at 10.05 -0500, Christopher J. PeBenito wrote:
>> On 02/16/11 01:42, Guido Trentalancia wrote:
>>> This patch allows mount to use kernel file descriptors.
>>>
>>> diff -pruN refpolicy-git-15022011-test/policy/modules/system/mount.te refpolicy-git-15022011-test-new/policy/modules/system/mount.te
>>> --- refpolicy-git-15022011-test/policy/modules/system/mount.te	2011-02-16 02:34:33.253189215 +0100
>>> +++ refpolicy-git-15022011-test-new/policy/modules/system/mount.te	2011-02-16 03:54:18.732023725 +0100
>>> @@ -51,6 +51,7 @@ can_exec(mount_t, mount_exec_t)
>>>  
>>>  files_tmp_filetrans(mount_t, mount_tmp_t, { file dir })
>>>  
>>> +kernel_use_fds(mount_t)
>>>  kernel_read_system_state(mount_t)
>>>  kernel_read_kernel_sysctls(mount_t)
>>>  kernel_dontaudit_getattr_core_if(mount_t)
>>
>> How did you come across this?
> 
> type=1400 audit(1295758153.958:3): avc:  denied  { use } for  pid=1429
> comm="mount" path="/dev/pts/0" dev=devpts ino=3
> scontext=system_u:system_r:mount_t:s0
> tcontext=system_u:system_r:kernel_t:s0 tclass=fd

Can you provide more detail?  What was happening on the system?

-- 
Chris PeBenito
Tresys Technology, LLC
www.tresys.com | oss.tresys.com