From owner-freebsd-hackers@FreeBSD.ORG Mon Nov 9 15:50:21 2009 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 58DBC106566C for ; Mon, 9 Nov 2009 15:50:21 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 29C638FC19 for ; Mon, 9 Nov 2009 15:50:21 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id D342A46B29; Mon, 9 Nov 2009 10:50:20 -0500 (EST) Received: from jhbbsd.hudson-trading.com (unknown [209.249.190.8]) by bigwig.baldwin.cx (Postfix) with ESMTPA id 1D00B8A020; Mon, 9 Nov 2009 10:50:20 -0500 (EST) From: John Baldwin To: freebsd-hackers@freebsd.org Date: Mon, 9 Nov 2009 09:31:12 -0500 User-Agent: KMail/1.9.7 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200911090931.12494.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Mon, 09 Nov 2009 10:50:20 -0500 (EST) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.5 required=4.2 tests=AWL,BAYES_00,RDNS_NONE autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: Alexander Best , Alan Cox Subject: Re: mmap(2) with MAP_ANON honouring offset although it shouldn't X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Nov 2009 15:50:21 -0000 On Saturday 07 November 2009 9:19:05 pm Alexander Best wrote: > no problem. i've sent the final patch as followup to kern/71258 and also > attached it to this message. to make it short. what's being changed by the > patch: > > 1) if MAP_ANON is defined and offset !=0 ====> return EINVAL > 2) if MAP_STACK is defined and offset !=0 ====> offset = 0 > > would be great if you could have a look at the patch if you've got a spare > minute. I didn't think 2) changed? I.e. both the old and new code do this, so only 1) is changing? -- John Baldwin