Re: [RFC][PATCH] selinux: support distinctions among all network address families

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On Mon, Dec 5, 2016 at 9:11 AM, Stephen Smalley <sds@xxxxxxxxxxxxx> wrote:
> On 12/02/2016 05:39 PM, Paul Moore wrote:
>> On Fri, Dec 2, 2016 at 12:40 PM, Stephen Smalley <sds@xxxxxxxxxxxxx> wrote:
>>> I suppose a further question on this patch is whether it should also add
>>> new classes for ICMP, IGMP, and SCTP sockets (any others that are
>>> presently mapped to SECCLASS_RAWIP_SOCKET that ought to be given their
>>> own class?).  In the SCTP case, this would at least allow them to be
>>> distinguished, but we would still lack the full support added by the
>>> separate SCTP patchset.
>>
>> For the record, I'm okay with this patch and I agree that the
>> compatibility concerns aren't likely to be significant.  However, I
>> would like to continue the discussion on the idea to include classes
>> for ICMP, IGMP, and SCTP.  I haven't looked into ICMP or IGMP, but
>> considering the changes necessary for SCTP I think it is okay to leave
>> SCTP out for now and add it in with proper SCTP support (and its own
>> policy capability).
>>
>> Stephen, I'm assuming you feel the same since you left that out of the patch?
>
> It depends on whether we think full SCTP support will be merged sooner
> or later.  If there is the possibility that full SCTP support will not
> be merged for a while, then I think I'd rather just add a SCTP socket
> class as part of this patch so that we can at least distinguish between
> SCTP sockets and raw IP sockets in policy in the interim.

As I sit here I would like to think that we'll get proper SCTP support
merged sooner rather than later, but well ... things happen.  I guess
there is no harm in adding the SCTP socket class now just in case.

> The other question is whether you agreed with Guido's suggested change
> for readability/maintainability or prefer the current style. I have no
> strong opinion either way.

I really don't care too much either way which is why I didn't comment
on it.  I suppose I have a slight preference for Guido's suggested
style, but I wouldn't respin the patch just for that.  However, if you
are going to add SCTP (which I'm guessing we should) go ahead and use
Guido's style.

-- 
paul moore
www.paul-moore.com
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