Message-ID: <41E9E65F.1030100@redhat.com>
Date: Sat, 15 Jan 2005 19:58:23 -0800
From: Ulrich Drepper <drepper@redhat.com>
Organization: Red Hat, Inc.
User-Agent: Mozilla Thunderbird  (X11/20041216)
MIME-Version: 1.0
To: Matt Mackall <mpm@selenic.com>
CC: "Theodore Ts'o" <tytso@mit.edu>,
       Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: short read from /dev/urandom
References: <41E7509E.4030802@redhat.com> <20050116024446.GA3867@waste.org>
In-Reply-To: <20050116024446.GA3867@waste.org>
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Matt Mackall wrote:
> _Neither_ case mentions signals and the "and will return as many bytes
> as requested" is clearly just a restatement of "does not have this
> limit". Whoever copied this comment to the manpage was a bit sloppy
> and dropped the first clause rather than the second:

It still means the documented API says there are no short reads.


> So anyone doing a read() can expect a short read regardless of the fd
> and is quite clear that reads can be interrupted by signals. "It is
> not an error". Ever.

Of course are signal interruptions wrong if the signal uses SA_RESTART.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖

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