Deprecate and remove SYS_ system call numbers?

[Adhemerval Zanella]

On 08/08/2016 21:09, Carlos O'Donell wrote:
> On 08/08/2016 05:06 PM, Florian Weimer wrote:
>> On 08/08/2016 11:01 PM, Carlos O'Donell wrote:
>>> On 08/08/2016 04:55 PM, Florian Weimer wrote:
>>>> On 08/08/2016 10:47 PM, Andreas Schwab wrote:
>>>>> Do you have a concrete example of any breakage?
>>>>
>>>> util-linux did not build because glibc was compiled against
>>>> kernel headers which did not define __NR_sched_setattr, so glibc
>>>> did not provide the SYS_sched_setattr macro.
>>>
>>> Rather than deprecating, should the kernel be taking
>>> responsibility for defining SYS_* constants?
>>
>> Yes, considering Stan's and Zack's comment, this appears to be the
>> only way to address the issue.
> 
> It doesn't seem terribly hard given the UAPI refactoring and the
> machinery there.
> 

We can also instead add the SYS_* constants in repository instead of
basing on current installed kernel and remove the kernel inclusion
of __NR_* constants.  It will make programs that rely on __NR_*
to explicit include the kernel definitions, but since they are using a
Linux only names I think it is ok.

We will need to keep in sync with kernel definitions, but we already do
it for other kind of API (network for instance).