From patchwork Fri Feb 23 19:25:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 877264 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3zp1bT4rwkz9sWH for ; Sat, 24 Feb 2018 06:33:09 +1100 (AEDT) Received: from localhost ([::1]:46719 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1epJ5f-0005wq-38 for incoming@patchwork.ozlabs.org; Fri, 23 Feb 2018 14:33:07 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49981) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1epIz7-0000eu-9J for qemu-devel@nongnu.org; Fri, 23 Feb 2018 14:26:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1epIz6-0004KH-6m for qemu-devel@nongnu.org; Fri, 23 Feb 2018 14:26:21 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:38856 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 1epIyz-00049W-JN; Fri, 23 Feb 2018 14:26:13 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 32C9B402243B; Fri, 23 Feb 2018 19:26:13 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-117-118.ams2.redhat.com [10.36.117.118]) by smtp.corp.redhat.com (Postfix) with ESMTP id 97E792024CAC; Fri, 23 Feb 2018 19:26:11 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Fri, 23 Feb 2018 20:25:21 +0100 Message-Id: <20180223192549.26666-9-kwolf@redhat.com> In-Reply-To: <20180223192549.26666-1-kwolf@redhat.com> References: <20180223192549.26666-1-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Fri, 23 Feb 2018 19:26:13 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Fri, 23 Feb 2018 19:26:13 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'kwolf@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 v3 08/36] util: Add qemu_opts_to_qdict_filtered() 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, jdurgin@redhat.com, pkrempa@redhat.com, mitake.hitoshi@lab.ntt.co.jp, jcody@redhat.com, qemu-devel@nongnu.org, mreitz@redhat.com, namei.unix@gmail.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This allows, given a QemuOpts for a QemuOptsList that was merged from multiple QemuOptsList, to only consider those options that exist in one specific list. Block drivers need this to separate format-layer create options from protocol-level options. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Max Reitz --- include/qemu/option.h | 2 ++ util/qemu-option.c | 42 +++++++++++++++++++++++++++++++++++++----- 2 files changed, 39 insertions(+), 5 deletions(-) diff --git a/include/qemu/option.h b/include/qemu/option.h index b127fb6db6..306fdb5f7a 100644 --- a/include/qemu/option.h +++ b/include/qemu/option.h @@ -124,6 +124,8 @@ void qemu_opts_set_defaults(QemuOptsList *list, const char *params, int permit_abbrev); QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict, Error **errp); +QDict *qemu_opts_to_qdict_filtered(QemuOpts *opts, QDict *qdict, + QemuOptsList *list, bool del); QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict); void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp); diff --git a/util/qemu-option.c b/util/qemu-option.c index a401e936da..2b412eff5e 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -1007,14 +1007,23 @@ void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp) } /* - * Convert from QemuOpts to QDict. - * The QDict values are of type QString. + * Convert from QemuOpts to QDict. The QDict values are of type QString. + * + * If @list is given, only add those options to the QDict that are contained in + * the list. If @del is true, any options added to the QDict are removed from + * the QemuOpts, otherwise they remain there. + * + * If two options in @opts have the same name, they are processed in order + * so that the last one wins (consistent with the reverse iteration in + * qemu_opt_find()), but all of them are deleted if @del is true. + * * TODO We'll want to use types appropriate for opt->desc->type, but * this is enough for now. */ -QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) +QDict *qemu_opts_to_qdict_filtered(QemuOpts *opts, QDict *qdict, + QemuOptsList *list, bool del) { - QemuOpt *opt; + QemuOpt *opt, *next; if (!qdict) { qdict = qdict_new(); @@ -1022,12 +1031,35 @@ QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) if (opts->id) { qdict_put_str(qdict, "id", opts->id); } - QTAILQ_FOREACH(opt, &opts->head, next) { + QTAILQ_FOREACH_SAFE(opt, &opts->head, next, next) { + if (list) { + QemuOptDesc *desc; + bool found = false; + for (desc = list->desc; desc->name; desc++) { + if (!strcmp(desc->name, opt->name)) { + found = true; + break; + } + } + if (!found) { + continue; + } + } qdict_put_str(qdict, opt->name, opt->str); + if (del) { + qemu_opt_del(opt); + } } return qdict; } +/* Copy all options in a QemuOpts to the given QDict. See + * qemu_opts_to_qdict_filtered() for details. */ +QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) +{ + return qemu_opts_to_qdict_filtered(opts, qdict, NULL, false); +} + /* Validate parsed opts against descriptions where no * descriptions were provided in the QemuOptsList. */