linux-kernel - Re: question wrt /drivers/char/tty

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Message-ID: <20080827173746.11b91c07@lxorguk.ukuu.org.uk>
Date:	Wed, 27 Aug 2008 17:37:46 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Denis Joseph Barrow <D.Barow@...ion.com>
Cc:	Jeff Garzik <jgarzik@...ox.com>, greg@...ah.com,
	Linux USB kernel mailing list <linux-usb@...r.kernel.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: question wrt /drivers/char/tty_io.c in pre 2.6.16 code

> The new tty_insert_flip_string returns the
> number of bytes successfully copied to tty recieve buffers
> how do I implement this functionality in pre 2.6.16 code,
> can it be done?

Probably but it'll be really ugly. You need to stick your nose into the
innards of struct tty_struct and check the space left in the current flip
buffer entry.

What you do if it is full is another question.

Alan.
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