Re: [PATCH] tty_ioctl.4: Remove TIOCTTYGSTRUCT ioctl info

["Michael Kerrisk (man-pages)" <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 12/02/2015 10:40 PM, Peter Hurley wrote:
> On 12/02/2015 02:52 PM, Michael Kerrisk (man-pages) wrote:
>> Hello Peter,
>>
>> On 11/16/2015 10:39 PM, Peter Hurley wrote:
>>> Thankfully, TIOCTTYGSTRUCT was removed in v2.5.67 by:
>>>
>>>     commit b3506a09d15dc5aee6d4bb88d759b157016e1864
>>>     Author: Andries E. Brouwer <andries.brouwer-rh8NL+sEX9E@public.gmane.org>
>>>     Date:   Tue Apr 1 04:42:46 2003 -0800
>>>
>>>     [PATCH] kill TIOCTTYGSTRUCT
>>>
>>>     Only used for (dubious) debugging purposes, and exposes
>>>     internal kernel state.
>>>
>>> [The git SHA is from Thomas Gleixner's history tree at
>>> https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git]
>>
>> Thanks for the report/patch. Man-pages tends to take a conservative
>> approach about discarding stuff though, since people reading man pages
>> also need to know about past behavior. Therefore, I instead
>> just added a note that this ioctl() disappeared in Linux 2.5.67:
>> "This command was removed in Linux 2.5.67."
> 
> Ok, thanks for the clarification.
> 
> I saw the commented-out TIOCGSERIAL/TIOCSSERIAL (which is _never_
> going away) and assumed the policy was more best-practices than
> complete.

Yes, things have not always been consistent, and TIOCTTYGSTRUCT
is borderline. The change happened long enough ago now that
I considered just applying you patch.

Cheers

Michael



-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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