From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9792 invoked by alias); 31 Mar 2011 08:47:44 -0000 Received: (qmail 9782 invoked by uid 22791); 31 Mar 2011 08:47:42 -0000 X-SWARE-Spam-Status: No, hits=-6.4 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 31 Mar 2011 08:47:35 +0000 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p2V8lYfU017373 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 31 Mar 2011 04:47:34 -0400 Received: from host1.jankratochvil.net (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p2V8lWKI026863 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 31 Mar 2011 04:47:34 -0400 Received: from host1.jankratochvil.net (localhost [127.0.0.1]) by host1.jankratochvil.net (8.14.4/8.14.4) with ESMTP id p2V8lVlu025201; Thu, 31 Mar 2011 10:47:32 +0200 Received: (from jkratoch@localhost) by host1.jankratochvil.net (8.14.4/8.14.4/Submit) id p2V8lTrm025184; Thu, 31 Mar 2011 10:47:29 +0200 Date: Thu, 31 Mar 2011 08:47:00 -0000 From: Jan Kratochvil To: Kevin Pouget Cc: gdb@sourceware.org Subject: Re: GDB and LD_PRELOAD library-call interception Message-ID: <20110331084729.GA29683@host1.jankratochvil.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2011-03/txt/msg00210.txt.bz2 On Thu, 31 Mar 2011 10:25:17 +0200, Kevin Pouget wrote: > it looks like if the library is loaded twice, without any control on > the first load ('my_init' pending breakpoint is only resolved before > the second execution) See `set exec-wrapper', GDB runs a normal shell to process the startup, GDB traps its first exec() call. Therefore LD_PRELOAD applies already on the shell. Regards, Jan