From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2A481C433FE for ; Wed, 12 Oct 2022 15:42:38 +0000 (UTC) Received: from localhost ([::1]:41830 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oidsT-0005ZG-BT for qemu-devel@archiver.kernel.org; Wed, 12 Oct 2022 11:42:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52972) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oidoH-0006pT-Bi for qemu-devel@nongnu.org; Wed, 12 Oct 2022 11:38:17 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:45140) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oido8-0001EK-IT for qemu-devel@nongnu.org; Wed, 12 Oct 2022 11:38:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665589088; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CGyiNRcDvp1yt2vo5ajS0q1H+fALnTj+obGbwNJPbJw=; b=KZVij3Usc7DpEsvqvJlwZjvkIQyw4S633jXBSLdhuPU69KV3UGlr7uEyKEQ3URVJx34KfF FgatCMD+TqaFpagh6kIUJn9UDuAF/EtMcx5UDVRASCekVjx5H9fixgumcnGVhiuBoiz7tV qT/k0oUcbrFpf7F/NPVATbbRvqi3eOI= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-173-V6GUV4scO_Sf-i0YpMKDPA-1; Wed, 12 Oct 2022 11:38:03 -0400 X-MC-Unique: V6GUV4scO_Sf-i0YpMKDPA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4E0E4185A7A3; Wed, 12 Oct 2022 15:38:03 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.192.110]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D1BFF111E3FD; Wed, 12 Oct 2022 15:38:02 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 6DEF121E6928; Wed, 12 Oct 2022 17:38:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Cc: arei.gonglei@huawei.com, lvivier@redhat.com, amit@kernel.org, mst@redhat.com, pbonzini@redhat.com, berrange@redhat.com, eduardo@habkost.net, thuth@redhat.com, david@redhat.com Subject: [PATCH 1/4] qom: Improve error messages when property has no getter or setter Date: Wed, 12 Oct 2022 17:37:58 +0200 Message-Id: <20221012153801.2604340-2-armbru@redhat.com> In-Reply-To: <20221012153801.2604340-1-armbru@redhat.com> References: <20221012153801.2604340-1-armbru@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When you try to set a property that has no setter, the error message blames "insufficient permission": $ qemu-system-x86_64 -S -display none -nodefaults -monitor stdio QEMU 7.1.50 monitor - type 'help' for more information (qemu) qom-set /machine type q35 Error: Insufficient permission to perform this operation This implies it could work with "sufficient permission". It can't. Change the error message to: Error: Property 'pc-i440fx-7.2-machine.type' is not writable Do the same for getting a property that has no getter. Signed-off-by: Markus Armbruster --- qom/object.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/qom/object.c b/qom/object.c index d34608558e..e5cef30f6d 100644 --- a/qom/object.c +++ b/qom/object.c @@ -1383,7 +1383,8 @@ bool object_property_get(Object *obj, const char *name, Visitor *v, } if (!prop->get) { - error_setg(errp, QERR_PERMISSION_DENIED); + error_setg(errp, "Property '%s.%s' is not readable", + object_get_typename(obj), name); return false; } prop->get(obj, v, name, prop->opaque, &err); @@ -1402,7 +1403,8 @@ bool object_property_set(Object *obj, const char *name, Visitor *v, } if (!prop->set) { - error_setg(errp, QERR_PERMISSION_DENIED); + error_setg(errp, "Property '%s.%s' is not writable", + object_get_typename(obj), name); return false; } prop->set(obj, v, name, prop->opaque, errp); -- 2.37.2