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Date: Thu, 28 Mar 2002 14:27:52 +0100 (CET)
From: Eric Lammerts <eric@lammerts.org>
To: Mark Atwood <mra@pobox.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: How to tell how much to expect from a fd
In-Reply-To: <m3663hjte0.fsf_-_@khem.blackfedora.com>
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On 27 Mar 2002, Mark Atwood wrote:

> Does there exist a fcntl or some other way to tell how much data is
> "ready to be read" from a fd?

int val;
ioctl(fd, FIONREAD, &val);

See tcp(7).

Eric

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