linux-kernel - Re: Why are not processes HUPped when they open /dev/console?

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Message-ID: <20120125214522.7a49cf39@pyramind.ukuu.org.uk>
Date:	Wed, 25 Jan 2012 21:45:22 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg KH <greg@...ah.com>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Why are not processes HUPped when they open /dev/console?

On Wed, 25 Jan 2012 22:38:40 +0100
Jiri Slaby <jslaby@...e.cz> wrote:

> Hello,
> 
> don't you remember by a chance the reason for this test in __tty_hangup:
>   if (filp->f_op->write != tty_write)
> 
> The logic there is not to HUP processes that have this tty open via
> /dev/console.

Because if you hang up the console the machine crashes ?

At least that's what used to happen.

Alan
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