From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS3215 2.6.0.0/16 X-Spam-Status: No, score=-4.2 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 970881F8C8 for ; Thu, 16 Sep 2021 15:08:56 +0000 (UTC) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 9198E385743B for ; Thu, 16 Sep 2021 15:08:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9198E385743B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1631804935; bh=mV87xXdDbT9JwNiizY3EuhUh97ey6I+4h0YcwWYXyz8=; h=To:Subject:References:Date:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=c1D1jpIWiZPdgdMkCx5I6KGtWOL/iBY4K4Yu5q5xMfywfqBZMPiMBNVAHtHnS78Zo xh38whqvfVFS96g3z+u3j2AkPN4FShVtCXG+wEtouyT8yeaVmyuOHcO51vaAjUcJ73 UCord7VRxf/8CfqbQ8dRTKfCQOWPEzUnwGtnRkAo= Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id 3F32A385843C for ; Thu, 16 Sep 2021 15:08:36 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 3F32A385843C Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-236-1iSYmYnzOyS_TpCbwjC76w-1; Thu, 16 Sep 2021 11:08:33 -0400 X-MC-Unique: 1iSYmYnzOyS_TpCbwjC76w-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 080D0102CB9B; Thu, 16 Sep 2021 15:08:33 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.194]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2EBD95D9C6; Thu, 16 Sep 2021 15:08:32 +0000 (UTC) To: "H.J. Lu" Subject: Re: [PATCH v11 1/1] Extend struct r_debug to support multiple namespaces [BZ #15971] References: <20210914165637.439860-1-hjl.tools@gmail.com> <20210914165637.439860-2-hjl.tools@gmail.com> <87zgscnck6.fsf@oldenburg.str.redhat.com> Date: Thu, 16 Sep 2021 17:08:30 +0200 In-Reply-To: (H. J. Lu's message of "Thu, 16 Sep 2021 07:17:00 -0700") Message-ID: <8735q4lfrl.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Florian Weimer via Libc-alpha Reply-To: Florian Weimer Cc: GNU C Library Errors-To: libc-alpha-bounces+e=80x24.org@sourceware.org Sender: "Libc-alpha" * H. J. Lu: > On Thu, Sep 16, 2021 at 1:34 AM Florian Weimer wrote: >> What about my question regarding access to _r_debug_extended for shared >> objects? > > As I mentioned in > > https://sourceware.org/pipermail/libc-alpha/2021-September/130888.html > > Linker generates DT_DEBUG only in the executable. dl_iterate_phdr can be > used to locate DT_DEBUG in the executable. I think some people want access _r_debug without any function calls, for example from signal handlers. But they can still do that. I guess we can reconsider what to do if there are similar requests for the extension structure. Thanks, Florian