From: David Santinoli <u235@libero.it>
To: linux-kernel@vger.kernel.org
Subject: Re: BUG in 2.4.0: dd if=/dev/random of=out.txt bs=10000 count=100
Date: Sat, 13 Jan 2001 21:37:28 +0100 [thread overview]
Message-ID: <20010113213728.B790@aidi.santinoli.com> (raw)
In-Reply-To: <20010113035314.316.qmail@web5205.mail.yahoo.com>
In-Reply-To: <20010113035314.316.qmail@web5205.mail.yahoo.com>; from telomerase@yahoo.com on Fri, Jan 12, 2001 at 07:53:14PM -0800
On Fri, Jan 12, 2001 at 07:53:14PM -0800, Rob Landley wrote:
> If I do the dd line in the title under 2.4.0 I get an
> out.txt file of 591 bytes.
And it's the same under 2.2.x, too.
> dd says it completes happily even when copying from
> random. 0+100 records in, 0+100 records out. It
It's not a fault of dd, or of the read() system call, either. It's just the way
/dev/random works - you can't read more bytes than those available in the
entropy pool. And if you try, you'll just fail with no error.
Cheers,
David
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next prev parent reply other threads:[~2001-01-13 20:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-13 3:53 Rob Landley
2001-01-13 4:44 ` David Ford
2001-01-13 5:08 ` John Heffner
2001-01-13 20:37 ` David Santinoli [this message]
2001-01-13 22:45 ` David Ford
2001-01-13 5:28 Rob Landley
2001-01-13 19:24 Bernd Eckenfels
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