[PATCH] Assume that pipe2 is always available

[Florian Weimer]

On 04/13/2017 07:39 PM, Adhemerval Zanella wrote:
> On 13/04/2017 12:37, Florian Weimer wrote:
>> The Debian patches (which are already required to build glibc before
>> this commit) contain an implementation of pipe2.
> 
> I did not follow, which 'Debian patches' are you referring here?

Upstream master contains an incomplete implementation of O_CLOEXEC 
support for Hurd.  For example, the file sysdeps/mach/hurd/accept4.c 
refers to the sock_to_o_flags identifier, but neither glibc, gnumach, 
nor hurd contain a definition.  The definition is found in a patch in 
the Debian package.  There is another patch which contains an 
implementation of pipe2:

https://sources.debian.net/src/glibc/2.24-8/debian/patches/hurd-i386/tg-pipe2.diff/

Anyone who wants to build glibc for Hurd needs those Debian patches, so 
I see no problem with applying this cleanup to upstream master.

(From the Hurd perspective.  NaCl does not support pipe2, either.)

Thanks,
Florian