linux-kernel - Re: um: TTY fixes (?)

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Message-ID: <20120607101951.14d6596d@bob.linux.org.uk>
Date:	Thu, 7 Jun 2012 10:19:51 +0100
From:	Alan Cox <alan@...ux.intel.com>
To:	Richard Weinberger <richard@....at>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, jslaby@...e.cz,
	user-mode-linux-devel@...ts.sourceforge.net,
	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	viro@...iv.linux.org.uk
Subject: Re: um: TTY fixes (?)

On Thu, 07 Jun 2012 01:17:24 +0200
Richard Weinberger <richard@....at> wrote:

> Am 04.06.2012 23:17, schrieb Alan Cox:
> > We can half ignore it on console for the simple reason that you
> > don't "dial in" to the console. I suspect it may be abusable but
> > I've not found a way to do so.
> > 
> 
> BTW: Can't we add such a mode to tty_port?
> E.g. tty_port->non_dialin_console. 8)

That is basically what you are doing when you omit a hangup method. The
security consequences on a multi-user box run deeper however so in the
end we need to fix the util-linux code.

Alan
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