linux-kernel - Re: [RFC] tty: Add get- ioctls to fetch tty status

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Message-ID: <20120923001534.776ac2a3@pyramind.ukuu.org.uk>
Date:	Sun, 23 Sep 2012 00:15:34 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Cyrill Gorcunov <gorcunov@...nvz.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: Re: [RFC] tty: Add get- ioctls to fetch tty status


> > Guys, you mean something like below? Look, I must admit I'm not really
> > sure if I've done all locking right, and there is no need for additional
> > kref counting on tty_struct. Could you please check if it looks more-less
> > sane (I've tested it but still...)

This still doesn't answer the question about 'why is this actually
useful'. It can change as or after you query it so the value is useless.

Alan
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