From owner-freebsd-stable@FreeBSD.ORG Wed Apr 21 02:42:38 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 64579106566C for ; Wed, 21 Apr 2010 02:42:38 +0000 (UTC) (envelope-from 000.fbsd@quip.cz) Received: from elsa.codelab.cz (elsa.codelab.cz [94.124.105.4]) by mx1.freebsd.org (Postfix) with ESMTP id 235148FC16 for ; Wed, 21 Apr 2010 02:42:37 +0000 (UTC) Received: from elsa.codelab.cz (localhost.codelab.cz [127.0.0.1]) by elsa.codelab.cz (Postfix) with ESMTP id 59D2919E027; Wed, 21 Apr 2010 04:42:35 +0200 (CEST) Received: from [192.168.1.2] (r5bb235.net.upc.cz [86.49.61.235]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by elsa.codelab.cz (Postfix) with ESMTPSA id EFDEB19E023; Wed, 21 Apr 2010 04:42:31 +0200 (CEST) Message-ID: <4BCE6615.9010707@quip.cz> Date: Wed, 21 Apr 2010 04:42:29 +0200 From: Miroslav Lachman <000.fbsd@quip.cz> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.1.9) Gecko/20100317 SeaMonkey/2.0.4 MIME-Version: 1.0 To: Garrett Cooper References: <4BCE4D0F.2020807@quip.cz> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: /libexec/ld-elf.so.1: Cannot execute objects on / X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Apr 2010 02:42:38 -0000 Garrett Cooper wrote: > 2010/4/20 Miroslav Lachman<000.fbsd@quip.cz>: >> I have large storage partition (/vol0) mounted as noexec and nosuid. Then >> one directory from this partition is mounted by nullfs as "exec and suid" so >> anything on it can be executed. >> >> The directory contains full installation of jail. Jail is running fine, but >> some ports (PHP for example) cannot be compiled inside the jail with >> message: >> >> /libexec/ld-elf.so.1: Cannot execute objects on / >> >> The same apply to executing of apxs >> >> root@rainnew ~/# /usr/local/sbin/apxs -q MPM_NAME >> /libexec/ld-elf.so.1: Cannot execute objects on / >> >> apxs:Error: Sorry, no shared object support for Apache. >> apxs:Error: available under your platform. Make sure. >> apxs:Error: the Apache module mod_so is compiled into. >> apxs:Error: your server binary '/usr/local/sbin/httpd'.. >> >> (it should return "prefork") >> >> So I think there is some bug in checking the mountpoint options, where the >> check is made on "parent" of the nullfs instead of the nullfs target >> mountpoint. >> >> It is on 6.4-RELEASE i386 GENERIC. I did not test it on another release. >> >> This is list of related mount points: >> >> /dev/mirror/gm0s2d on /vol0 (ufs, local, noexec, nosuid, soft-updates) >> /vol0/jail/.nullfs/rain on /vol0/jail/rain_new (nullfs, local) >> /usr/ports on /vol0/jail/rain_new/usr/ports (nullfs, local) >> devfs on /vol0/jail/rain_new/dev (devfs, local) >> >> If I changed /vol0 options to (ufs, local, soft-updates) the above error is >> gone and apxs / compilation works fine. >> >> Can somebody look at this problem? > > Can you please provide output from ktrace / truss for the issue? I did # ktrace /usr/local/sbin/apxs -q MPM_NAME The output is here http://freebsd.quip.cz/ld-elf/ktrace.out Let me know if you need something else. Thank you for your interest! Miroslav Lachman