From patchwork Thu Jun 14 19:14:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 10465065 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C4435603B4 for ; Thu, 14 Jun 2018 19:22:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B069F28CFD for ; Thu, 14 Jun 2018 19:22:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AD9AD28CF9; Thu, 14 Jun 2018 19:22:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3204E28E9A for ; Thu, 14 Jun 2018 19:21:26 +0000 (UTC) Received: from localhost ([::1]:42262 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fTXoC-0005sb-Vk for patchwork-qemu-devel@patchwork.kernel.org; Thu, 14 Jun 2018 15:21:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53431) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fTXhw-0001a7-Uy for qemu-devel@nongnu.org; Thu, 14 Jun 2018 15:15:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fTXhu-0001a5-MH for qemu-devel@nongnu.org; Thu, 14 Jun 2018 15:14:56 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:50456 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fTXhm-0001T1-Mf; Thu, 14 Jun 2018 15:14:46 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id 5585681663F2; Thu, 14 Jun 2018 19:14:46 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-117-1.ams2.redhat.com [10.36.117.1]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2C08E11166F9; Thu, 14 Jun 2018 19:14:46 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 366C011386AF; Thu, 14 Jun 2018 21:14:44 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Thu, 14 Jun 2018 21:14:37 +0200 Message-Id: <20180614191443.14361-13-armbru@redhat.com> In-Reply-To: <20180614191443.14361-1-armbru@redhat.com> References: <20180614191443.14361-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Thu, 14 Jun 2018 19:14:46 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Thu, 14 Jun 2018 19:14:46 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 12/18] block-qdict: Clean up qdict_crumple() a bit 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: kwolf@redhat.com, jcody@redhat.com, qemu-block@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP When you mix scalar and non-scalar keys, whether you get an "already set as scalar" or an "already set as dict" error depends on qdict iteration order. Neither message makes much sense. Replace by ""Cannot mix scalar and non-scalar keys". This is similar to the message we get for mixing list and non-list keys. I find qdict_crumple()'s first loop hard to understand. Rearrange it and add a comment. Signed-off-by: Markus Armbruster --- qobject/block-qdict.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/qobject/block-qdict.c b/qobject/block-qdict.c index a4e1c8d08f..36cf58acc8 100644 --- a/qobject/block-qdict.c +++ b/qobject/block-qdict.c @@ -403,7 +403,7 @@ static int qdict_is_list(QDict *maybe_list, Error **errp) QObject *qdict_crumple(const QDict *src, Error **errp) { const QDictEntry *ent; - QDict *two_level, *multi_level = NULL; + QDict *two_level, *multi_level = NULL, *child_dict; QObject *dst = NULL, *child; size_t i; char *prefix = NULL; @@ -422,28 +422,28 @@ QObject *qdict_crumple(const QDict *src, Error **errp) } qdict_split_flat_key(ent->key, &prefix, &suffix); - child = qdict_get(two_level, prefix); + child_dict = qobject_to(QDict, child); + + if (child) { + /* + * If @child_dict, then all previous keys with this prefix + * had a suffix. If @suffix, this one has one as well, + * and we're good, else there's a clash. + */ + if (!child_dict || !suffix) { + error_setg(errp, "Cannot mix scalar and non-scalar keys"); + goto error; + } + } + if (suffix) { - QDict *child_dict = qobject_to(QDict, child); if (!child_dict) { - if (child) { - error_setg(errp, "Key %s prefix is already set as a scalar", - prefix); - goto error; - } - child_dict = qdict_new(); - qdict_put_obj(two_level, prefix, QOBJECT(child_dict)); + qdict_put(two_level, prefix, child_dict); } - qdict_put_obj(child_dict, suffix, qobject_ref(ent->value)); } else { - if (child) { - error_setg(errp, "Key %s prefix is already set as a dict", - prefix); - goto error; - } qdict_put_obj(two_level, prefix, qobject_ref(ent->value)); }