WIP/RFC patch for Linux termios overhaul

[H. Peter Anvin]

On March 27, 2025 1:27:42 AM PDT, Florian Weimer <fweimer@redhat.com> wrote:
>* H. Peter Anvin:
>
>> On March 26, 2025 10:19:27 AM PDT, Florian Weimer <fweimer@redhat.com> wrote:
>>>* H. Peter Anvin:
>>>
>>>> It is not even tested, never mind productized, but I would love to get
>>>> some feedback on this approach and implementation.
>>>>
>>>> https://git.zytor.com/linux/glibc.git/commit/?h=hpa/termios
>>>
>>>I think it's better to remove <termio.h> stuff from
>>>sysdeps/unix/sysv/linux/bits/ioctl-types.h because it's not really
>>>usable if applications include <termios.h> and <sys/ioctl.h>.
>>>
>>>I don't know if we need to keep <termio.h> working, pratically speaking.
>>>Removing <termio.h> and the bad ioctl parts without prior deprecation
>>>warning might be considered a bit rude, but perhaps no one will notice.
>>>We could put the removal into Fedora rawhide if it's separate from the
>>>rest (the new symbol additions).
>
>> ... which pretty much means doing something like what I have been
>> doing here, and then removing termio.h.
>
>Well, we can't really add the other (functional) changes before those
>land in the upstream branch.  That would be a bit of a fork. 8-)
>
>So if we want to do this experiment, we would have to sequence the
><termio.h> removal patch first.
>
>Thanks,
>Florian
>

Well, that's very easy to do. I'll try to whip up a patch later today.