[patch v1] include: isolate __O_CLOEXEC flag for sys/mount.h and fcntl.h

[Florian Weimer]

* Adhemerval Zanella Netto:

> On 07/02/26 02:19, DJ Delorie wrote:
>> 
>>     include: isolate __O_CLOEXEC flag for sys/mount.h and fcntl.h
>>     
>>     Including sys/mount.h should not implicitly include fcntl.h
>>     as that causes namespace pollution and conflicts with kernel
>>     headers.  It only needs O_CLOEXEC for OPEN_TREE_CLOEXEC
>>     (although it shouldn't need that, but it's defined that way)
>>     so we provide that define (via a private version) separately.
>
> Look ok to me, although I haven't rebuild all the ABIs to check if this
> break anything.
>
> Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

I ran build-many-glibcs.py with the patch, no issues reported.

Tested-by: Florian Weimer <fweimer@redhat.com>

Thanks,
Florian