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To: Aaron Lehmann <aaronl@vitelus.com>
Cc: Jamie Lokier <lk@tantalophile.demon.co.uk>, linux-kernel@vger.kernel.org
Subject: Re: Security question: "Text file busy" overwriting executables but not shared libraries?
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From: ebiederm@xmission.com (Eric W. Biederman)
Date: 13 Oct 2001 16:27:48 -0600
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Aaron Lehmann <aaronl@vitelus.com> writes:

> On Sat, Oct 13, 2001 at 09:46:03PM +0200, Jamie Lokier wrote:
> > There are applications (GCC comes to mind) which are using mmap() to
> > read files now because it is measurably faster than read(), for
> > sufficiently large source files.
> 
> But it does have the advantage of allowing the sharing of memory, does
> it not?

Only if you are going to write to the data.

Eric
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