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Date:	Mon, 10 Nov 2014 11:16:39 -0500
From:	Austin S Hemmelgarn <>
To:	One Thousand Gnomes <>,
	Theodore Ts'o <>
CC:	Martin Tournoij <>,
Subject: Re: [RFC] The SIGINFO signal from BSD

On 2014-11-10 09:22, One Thousand Gnomes wrote:
>> wouldn't be accepted.  (BTW, if you're going to do this, note that ^T
>> could be remapped to any control character via stty; so to do this we
>> would need to define an extra index in c_cc[] array in the struct
>> termios.)
> We have 19 entries in the array and no platforms that byte pack so that
> would actually be doable I think.
> I'm really dubious about its value in the Linux world. You could do far
> better teaching the GUI desktop to walk the process tree of clients and
> dump the window owners process subtrees in a nice pop up window.
> PS: Austin - SIGPWR was used on the System 5 boxes I used to indicate
> power had been *restored* not lost. The primary usage was in curses and
> termios using apps so that when the power came back on they would redraw
> the screens on all the terminals.
> You have to think back to a world of a generator/battery backed servers
> and non battery backed terminals for that to make sense.
Ah, I'd been misinformed then, that usage makes a lot more sense.  I've 
not personally used System 5 (or for that matter anything older than 
HP-UX 10.20), so I'm not always very well informed about it.

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