From owner-freebsd-hackers@FreeBSD.ORG Wed Dec 21 16:20:00 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3F1FE16A42B for ; Wed, 21 Dec 2005 16:20:00 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from speedfactory.net (mail6.speedfactory.net [66.23.216.219]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7B2D143D53 for ; Wed, 21 Dec 2005 16:19:59 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (unverified [66.23.211.162]) by speedfactory.net (SurgeMail 3.5b3) with ESMTP id 4296155 for multiple; Wed, 21 Dec 2005 11:21:00 -0500 Received: from localhost (john@localhost [127.0.0.1]) by server.baldwin.cx (8.13.4/8.13.4) with ESMTP id jBLGJJDQ016736; Wed, 21 Dec 2005 11:19:20 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: Ceri Davies Date: Wed, 21 Dec 2005 11:18:26 -0500 User-Agent: KMail/1.8.2 References: <20051220114121.GA58620@submonkey.net> <200512201641.02898.jhb@freebsd.org> <20051221094130.GB20540@submonkey.net> In-Reply-To: <20051221094130.GB20540@submonkey.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-6" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200512211118.27363.jhb@freebsd.org> X-Virus-Scanned: ClamAV version 0.87.1, clamav-milter version 0.87 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.4 required=4.2 tests=ALL_TRUSTED autolearn=failed version=3.1.0 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on server.baldwin.cx X-Server: High Performance Mail Server - http://surgemail.com r=1653887525 Cc: freebsd-hackers@freebsd.org Subject: Re: Mostly static binaries with crunchgen 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: Wed, 21 Dec 2005 16:20:00 -0000 On Wednesday 21 December 2005 04:41 am, Ceri Davies wrote: > On Tue, Dec 20, 2005 at 04:41:01PM -0500, John Baldwin wrote: > > On Tuesday 20 December 2005 04:31 pm, Ceri Davies wrote: > > > On Tue, Dec 20, 2005 at 01:43:58PM -0500, John Baldwin wrote: > > > > On Tuesday 20 December 2005 10:58 am, Ceri Davies wrote: > > > > > On Tue, Dec 20, 2005 at 10:29:27AM -0500, John Baldwin wrote: > > > > > > The other concern is does this force the entire crunch to require > > > > > > a working rtld now? If so, that would mean that this wouldn't be > > > > > > appropriate for something such as /rescue. If there were a way > > > > > > to statically link rtld into the crunch itself that would > > > > > > probably be ideal, but I'm not sure that is possible. > > > > > > > > > > No, just the dynamic bits require rtld. > > > > > > > > So you can still run /foo without rtld being present if foo doesn't > > > > need dlopen, etc.? It looks like you link the crunch with -o > > > > dynamic, so isn't the kernel going to complain when you try to exec > > > > it that it can't find rtld if rtld is missing? (Think about /rescue > > > > if your rtld is hosed and/or missing.) > > > > > > Sorry, you're correct of course. It's still useful in Adrian's > > > environment at least (because he puts rtld on an MFS). > > > > One workaround for this case would be to have two crunches, one for the > > pure-static stuff and one for the dynamic-using stuff. Alternatively, if > > you had a way to statically link the rtld functions into the crunch you > > could still use just one crunch. I just want to make sure we don't go > > turning this on for /rescue since that needs to work if rtld is hosed > > (unless we go the route of two crunches). > > Ah, OK. The new version attached ensures that if you don't use the > libs_so declaration, you get an identical binary to that produced without > the patch. Sounds good (you could just go back to using -static in that case, but that's a minor detail). Still have TORTUOUS change in your diff. :) -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org