WIP/RFC patch for Linux termios overhaul

[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).
>
>Thanks,
>Florian
>

... which pretty much means doing something like what I have been doing here, and then removing termio.h.