From owner-cvs-all@FreeBSD.ORG Fri Feb 4 14:27:17 2005 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5475D16A4CE; Fri, 4 Feb 2005 14:27:17 +0000 (GMT) Received: from sasami.jurai.net (sasami.jurai.net [69.17.104.113]) by mx1.FreeBSD.org (Postfix) with ESMTP id D4DC843D1D; Fri, 4 Feb 2005 14:27:16 +0000 (GMT) (envelope-from mdodd@FreeBSD.ORG) Received: from sasami.jurai.net (winter@sasami.jurai.net [69.17.104.113]) by sasami.jurai.net (8.13.1/8.13.1) with ESMTP id j14ERDsj070425; Fri, 4 Feb 2005 09:27:15 -0500 (EST) (envelope-from mdodd@FreeBSD.ORG) Date: Fri, 4 Feb 2005 09:27:13 -0500 (EST) From: "Matthew N. Dodd" X-X-Sender: winter@sasami.jurai.net To: Alexander Leidinger In-Reply-To: <20050204151805.ztnw76rhw80k8w48@netchild.homeip.net> Message-ID: <20050204092535.M76517@sasami.jurai.net> References: <200502040246.j142kfO5085365@repoman.freebsd.org> <20050204151805.ztnw76rhw80k8w48@netchild.homeip.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.5.6 (sasami.jurai.net [69.17.104.113]); Fri, 04 Feb 2005 09:27:16 -0500 (EST) cc: cvs-src@FreeBSD.ORG cc: src-committers@FreeBSD.ORG cc: cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/libexec/rtld-elf libmap.c libmap.h rtld.1 rtld.c X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Feb 2005 14:27:17 -0000 On Fri, 4 Feb 2005, Alexander Leidinger wrote: > "Matthew N. Dodd" wrote: > >> Another handy libmap patch. Lets you do stuff like this: >> >> LD_LIBMAP="libpthread.so.1=libthr.so.1" mythreadedapp > > Even for SUID programs where this feature may be abused to do nasty things? trust = !issetugid(); ... if (trust) { ... libmap_override = getenv(LD_ "LIBMAP"); ... So no, no more open to abuse than LD_PRELOAD etc. -- 10 40 80 C0 00 FF FF FF FF C0 00 00 00 00 10 AA AA 03 00 00 00 08 00