From owner-freebsd-hackers  Thu Jan  4 10:54:27 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id KAA23659
          for hackers-outgoing; Thu, 4 Jan 1996 10:54:27 -0800 (PST)
Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211])
          by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id KAA23643
          for <hackers@freebsd.org>; Thu, 4 Jan 1996 10:54:24 -0800 (PST)
Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id LAA18218; Thu, 4 Jan 1996 11:44:40 -0700
From: Terry Lambert <terry@lambert.org>
Message-Id: <199601041844.LAA18218@phaeton.artisoft.com>
Subject: Re: OK, I'm stumped...
To: bde@zeta.org.au (Bruce Evans)
Date: Thu, 4 Jan 1996 11:44:40 -0700 (MST)
Cc: hackers@freebsd.org, terry@lambert.org
In-Reply-To: <199601040546.QAA15201@godzilla.zeta.org.au> from "Bruce Evans" at Jan 4, 96 04:46:09 pm
X-Mailer: ELM [version 2.4 PL24]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-hackers@freebsd.org
Precedence: bulk

> >Why would anyone ever specify a second argument to uiomove() that
> >was less than the largest iov->iov_len for the iov list in the
> >uio structure that was passed in?
> 
> Because iov->iov_len might be as large as INT_MAX and it may be hard
> to allocate a large enough kernel buffer.
> 
> 	char buf[SMALLSIZE];
> 	...
> 	r = uiomove(buf, sizeof buf, uio);

I agree that this is a possibility.

But I didn't see this usage in the kernel.  Did I not look hard enough?


					Regards,
					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.