Re: [PATCH] selinux: keep SELinux in sync with new capability definitions

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On Mon, Dec 19, 2016 at 8:35 PM, Paul Moore <paul@xxxxxxxxxxxxxx> wrote:
> On Mon, Dec 19, 2016 at 9:24 AM, Stephen Smalley <sds@xxxxxxxxxxxxx> wrote:
>> On Sun, 2016-12-18 at 21:06 +0100, Nicolas Iooss wrote:
>>> Hello,
>>> This patch made the compiler I am using to build the kernel (clang)
>>> report two new warnings when building
>>> scripts/selinux/genheaders/genheaders.c and
>>> scripts/selinux/mdp/mdp.c:
>>>
>>> 'CAP_LAST_CAP' is not defined, evaluates to 0 [-Wundef]
>>> 'CAP_AUDIT_READ' is not defined, evaluates to 0 [-Wundef]
>>>
>>> Even though this is not detected by gcc, it seems like a bug to
>>> compare
>>> undefined values. There is no issue where classmap.h is included from
>>> security/selinux/avc.c because include/uapi/linux/capability.h got
>>> included too.
>>>
>>> I see two ways of fixing these warnings: either by defining the
>>> capability values in genheaders and mdp by adding #include
>>> <linux/capability.h>, or by adding "defined(__KERNEL__) &&" before
>>> the
>>> test so that it is only processed from kernel code (avc.c). How would
>>> you like this to be fixed?
>>
>> I suppose we ought to #include <uapi/linux/capability.h> in classmap.h.
>
> Yep.  Unless one of you wants to beat me to it, I'll put a quick patch
> together tomorrow.

See the patch I just posted to the list.  It turns out it wasn't quite
that easy due to conflicts between the kernel and system among the
various nested includes, but I think the posted patch should solve
everything, if not please let me know.  If I don't hear anything, I'll
push this up to James later this week (tomorrow?) for inclusion into
v4.10.

-- 
paul moore
www.paul-moore.com
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