From nobody Wed Nov 5 17:20:09 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1496734684568910.8786349739588; Tue, 6 Jun 2017 00:38:04 -0700 (PDT) Received: from localhost ([::1]:36635 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dI93z-0002FX-70 for importer@patchew.org; Tue, 06 Jun 2017 03:38:03 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41427) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dI90G-0007fO-IH for qemu-devel@nongnu.org; Tue, 06 Jun 2017 03:34:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dI90F-0001SY-Ea for qemu-devel@nongnu.org; Tue, 06 Jun 2017 03:34:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42186) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dI90F-0001Rh-6r; Tue, 06 Jun 2017 03:34:11 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id 373193DBE5; Tue, 6 Jun 2017 07:34:10 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-98.ams2.redhat.com [10.36.116.98]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7A12D4FA4D; Tue, 6 Jun 2017 07:34:09 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 25680113864C; Tue, 6 Jun 2017 09:34:08 +0200 (CEST) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 373193DBE5 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=armbru@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 373193DBE5 From: Markus Armbruster To: qemu-devel@nongnu.org Date: Tue, 6 Jun 2017 09:34:08 +0200 Message-Id: <1496734448-19256-5-git-send-email-armbru@redhat.com> In-Reply-To: <1496734448-19256-1-git-send-email-armbru@redhat.com> References: <1496734448-19256-1-git-send-email-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 06 Jun 2017 07:34:10 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 4/4] monitor: fix object_del for command-line-created objects X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-stable@nongnu.org, Michael Roth , "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Michael Roth Currently objects specified on the command-line are only partially cleaned up when 'object_del' is issued in either HMP or QMP: the object itself is fully finalized, but the QemuOpts are not removed. This results in the following behavior: x86_64-softmmu/qemu-system-x86_64 -monitor stdio \ -object memory-backend-ram,id=3Dram1,size=3D256M QEMU 2.7.91 monitor - type 'help' for more information (qemu) object_del ram1 (qemu) object_del ram1 object 'ram1' not found (qemu) object_add memory-backend-ram,id=3Dram1,size=3D256M Duplicate ID 'ram1' for object Try "help object_add" for more information which can be an issue for use-cases like memory hotplug. This happens on the HMP side because hmp_object_add() attempts to create a temporary QemuOpts entry with ID 'ram1', which ends up conflicting with the command-line-created entry, since it was never cleaned up during the previous hmp_object_del() call. We address this by adding a check in user_creatable_del(), which is called by both qmp_object_del() and hmp_object_del() to handle the actual object cleanup, to determine whether an option group entry matching the object's ID is present and removing it if it is. Note that qmp_object_add() never attempts to create a temporary QemuOpts entry, so it does not encounter the duplicate ID error, which is why this isn't generally visible in libvirt. Cc: "Dr. David Alan Gilbert" Cc: Markus Armbruster Cc: Eric Blake Cc: Daniel Berrange Cc: qemu-stable@nongnu.org Signed-off-by: Michael Roth Reviewed-by: Daniel P. Berrange Reviewed-by: Markus Armbruster Message-Id: <1496531612-22166-3-git-send-email-mdroth@linux.vnet.ibm.com> Signed-off-by: Markus Armbruster --- qom/object_interfaces.c | 9 +++++++++ tests/check-qom-proplist.c | 4 ++-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c index d4253a8..ff27e06 100644 --- a/qom/object_interfaces.c +++ b/qom/object_interfaces.c @@ -4,6 +4,7 @@ #include "qemu/module.h" #include "qapi-visit.h" #include "qapi/opts-visitor.h" +#include "qemu/config-file.h" =20 void user_creatable_complete(Object *obj, Error **errp) { @@ -181,6 +182,14 @@ void user_creatable_del(const char *id, Error **errp) error_setg(errp, "object '%s' is in use, can not be deleted", id); return; } + + /* + * if object was defined on the command-line, remove its corresponding + * option group entry + */ + qemu_opts_del(qemu_opts_find(qemu_find_opts_err("object", &error_abort= ), + id)); + object_unparent(obj); } =20 diff --git a/tests/check-qom-proplist.c b/tests/check-qom-proplist.c index e3b3ae4..8e432e9 100644 --- a/tests/check-qom-proplist.c +++ b/tests/check-qom-proplist.c @@ -438,9 +438,9 @@ static void test_dummy_createcmdl(void) * check for this in user_creatable_del() and remove the QemuOpts if * it is present. * - * FIXME: add an assert to verify that the QemuOpts is cleaned up - * once the corresponding cleanup code is added. + * The below check ensures this works as expected. */ + g_assert_null(qemu_opts_find(&qemu_object_opts, "dev0")); } =20 static void test_dummy_badenum(void) --=20 2.7.5