help adding a type attribute to a domain

[Dominick Grift]

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On 03/11/2011 06:04 PM, Maria Iano wrote:
> 
> On Mar 11, 2011, at 11:48 AM, Dominick Grift wrote:
> 
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>> On 03/11/2011 05:42 PM, Daniel J Walsh wrote:
>>> On 03/11/2011 10:57 AM, Maria Iano wrote:
>>>> I'm getting a denial that audit2why says is due to constraints.
>>>> Sesearch does show that the action has an allow rule.
>>>
>>>> Here are the audit messages:
>>>
>>>> host=eng-vocngcn03.eng.gci type=AVC  
>>>> msg=audit(1299844473.770:740848):
>>>> avc:  denied  { sigkill } for  pid=22927 comm="kill"
>>>> scontext=system_u:system_r:rgmanager_t:s0
>>>> tcontext=system_u:system_r:unconfined_t:s0-s0:c0.c1023  
>>>> tclass=process
>>>
>>>> host=eng-vocngcn03.eng.gci type=SYSCALL
>>>> msg=audit(1299844473.770:740848): arch=c000003e syscall=62  
>>>> success=yes
>>>> exit=0 a0=19ba a1=9 a2=9 a3=0 items=0 ppid=20173 pid=22927
>>>> auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
>>>> fsgid=0 tty=(none) ses=4294967295 comm="kill" exe="/bin/kill"
>>>> subj=system_u:system_r:rgmanager_t:s0 key=(null)
>>>
>>> You have rgmanager sending a kill signal to a process running as
>>> unconfined_t
>>
>> There is no proof that its rgmanager doing that imho. Since  
>> rgmanager_t
>> is an unconfined_domain it could be any generic application started  
>> by a
>> process running in the rgmanager_t domain (eventually started by  
>> rgmanager)
>>
> 
> We have red hat clustering running on the server, and the clustering  
> processes are running as rgmanager_t. When we move a service off the  
> server to another node, the clustering software calls a vendor script  
> like the red hat init.d scripts, with the stop command. That vendor  
> script calls another script which is a stop script. That stop scripts  
> if full of kill commands - that match all running processes against  
> various expressions and kill them.
> 
> We do have a custom policy with a bunch of allow rules but none of  
> them allow a domain transition.

Yes i think i have a reasonable good idea now of what is going on. The
easiest solution to the constraint issue would probably be to run
rgmanager_t on s0 - mcs_systemhigh.

policy_module(myrgmanager, 1.0.0)

gen_require(`
 type rgmanager_t, rgmanager_exec_t;
')

init_ranged_daemon_domain(rgmanager_t, rgmanager_exec_t, s0 -
mcs_systemhigh)

make -f /usr/share/selinux/devel/Makefile myrgmanager.pp
sudo semodule -i myrgmanager.pp

(may or may not fix the mcs constraint issues)



> Thanks,
> Maria
> --
> selinux mailing list
> selinux at lists.fedoraproject.org
> https://admin.fedoraproject.org/mailman/listinfo/selinux

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