netdev - Re: [PATCH glibc] Linux: Include <linux/sockios.h> in <bits/socket.h> under __USE

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Date:   Mon, 22 Jul 2019 13:34:48 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Florian Weimer <fweimer@...hat.com>
Cc:     GNU C Library <libc-alpha@...rceware.org>,
        Sergei Trofimovich <slyfox@...too.org>,
        Networking <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Michael Kerrisk <mtk.manpages@...il.com>,
        linux-man <linux-man@...r.kernel.org>
Subject: Re: [PATCH glibc] Linux: Include <linux/sockios.h> in <bits/socket.h>
 under __USE_MISC

On Mon, Jul 22, 2019 at 1:31 PM Florian Weimer <fweimer@...hat.com> wrote:
>
> Historically, <asm/socket.h> (which is included from <bits/socket.h>)
> provided ioctl operations for sockets.  User code accessed them
> through <sys/socket.h>.  The kernel UAPI headers have removed these
> definitions in favor of <linux/sockios.h>.  This commit makes them
> available via <sys/socket.h> again.

Looks good to me.

I wonder if we should still do these two changes in the kernel:

- include asm/socket.h from linux/socket.h for consistency
- move the defines that got moved from asm/sockios.h to linux/sockios.h
  back to the previous location to help anyone who is user
  newer kernel headers with older glibc headers.

      Arnd