Re: MCS error

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On 02/19/2015 03:17 PM, Tracy Reed wrote:
> On Thu, Feb 19, 2015 at 11:46:18AM PST, Stephen Smalley spake thusly:
>> Domains with those attributes can override the corresponding MCS
>> constraint.  Depending on version, seinfo --constrain will dump the
>> actual constraints for you.  In any event, I suspect you need to assign
>> the mcsuntrustedproc attribute to your web application domains if you
>> want them to be constrained by MCS at all, plus you'd need to run them
>> with specific category sets.
> 
> How do I assign mcsuntrustedproc attribute to my web application domain? I know
> how to set booleans, categories, etc. but have not yet encountered needing to
> set an attribute for a domain. Google for "set selinux attribute" turns up
> stuff about setting user, role, type etc. as attributes but nothing about
> setting attributes such as mcsuntrustedproc.

You need to create a policy module and install it.

You can either use the refpolicy interface for making it MCS constrained
(look in /usr/share/selinux/devel/include/kernel/mcs.if after installing
selinux-policy-devel), or just directly put a typeattribute statement
into your policy module.


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