linux-kernel - Re: [PATCH 0/7] TTY Keyboard Status Request

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Message-ID: <0db56bba-96fd-ab99-aa54-360ab171b703@landley.net>
Date:   Mon, 10 Jun 2019 16:06:27 -0500
From:   Rob Landley <rob@...dley.net>
To:     Arseny Maslennikov <ar@...msu.ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org
Cc:     "Vladimir D . Seleznev" <vseleznv@...linux.org>
Subject: Re: [PATCH 0/7] TTY Keyboard Status Request

On 6/5/19 3:18 AM, Arseny Maslennikov wrote:
> This patch series introduces TTY keyboard status request, a feature of
> the n_tty line discipline that reserves a character in struct termios
> (^T by default) and reacts to it by printing a short informational line
> to the terminal and sending a Unix signal to the tty's foreground
> process group. The processes may, in response to the signal, output a
> textual description of what they're doing.

I had a long twitter thread about this with some BSD developers,
https://twitter.com/landley/status/1127148250430152704
asked on the toybox list for opinions,
http://lists.landley.net/pipermail/toybox-landley.net/2019-May/010461.html
and became aware of this patch set when the android bionic maintainer pointed me
at news coverage of it
http://lists.landley.net/pipermail/toybox-landley.net/2019-June/010536.html

So there would appear to at least be interest in the concept.

(The conclusion I came to looking at it last month is is it can't be done
without kernel support, but if such support _does_ arrive I want to add it to
toybox.)

Rob