From patchwork Thu Nov 5 14:27:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 318527 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81ADAC4741F for ; Thu, 5 Nov 2020 14:28:41 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A98EE20786 for ; Thu, 5 Nov 2020 14:28:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Yb37xgjG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A98EE20786 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38880 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kagFj-0003xM-Dh for qemu-devel@archiver.kernel.org; Thu, 05 Nov 2020 09:28:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42520) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kagEl-000360-4r for qemu-devel@nongnu.org; Thu, 05 Nov 2020 09:27:39 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:53939) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kagEj-0003is-Jb for qemu-devel@nongnu.org; Thu, 05 Nov 2020 09:27:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604586456; 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; bh=HaqI3aTjBnthZvG/DOQIUIn94Yj437WSiD5u/KyRZjo=; b=Yb37xgjGw8b7dUtbH4BiyeGUmIfBhDUIJwFHJwZxUg0sindy/e6UjUtB0QkQlqhmHp/EL+ rqBkCnozfU77a9Dp0gvj8xKVXnKjnE7n5GxU8WIXo6bXj2fo2dzZ0zW1/KnZ88My9rkgkv snJ7ypfB8E7ESKC1W4TCAIbdPjT36yU= 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-372-2_bIBnSLNMuihtLY10TeLw-1; Thu, 05 Nov 2020 09:27:33 -0500 X-MC-Unique: 2_bIBnSLNMuihtLY10TeLw-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 61CED100C61D for ; Thu, 5 Nov 2020 14:27:32 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0F16A5DAA2; Thu, 5 Nov 2020 14:27:31 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH for-5.2 0/2] deprecate short-form boolean options Date: Thu, 5 Nov 2020 09:27:29 -0500 Message-Id: <20201105142731.623428-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/04 22:46:30 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: berrange@redhat.com, armbru@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" QemuOpts lets you write boolean options in "short form" where "abc" means "abc=on" and "noabc" means "abc=off". This is confusing, since it is not done for the first key=value pair but only if there is an implied key; it can also be grossly misused, for example "-device e1000,noid" will create a device with id equal to "off". Unfortunately, this idiom has found wide use with -chardev (think "server,nowait") and to a lesser extent -spice. Patch 2 in this series deprecates it for all other option groups. The first patch avoids emitting the warning for the "help" option. Paolo Paolo Bonzini (2): qemu-option: move help handling to get_opt_name_value qemu-option: warn for short-form boolean options chardev/char.c | 1 + docs/system/deprecated.rst | 7 +++++ include/qemu/option.h | 1 + tests/test-qemu-opts.c | 1 + ui/spice-core.c | 1 + util/qemu-option.c | 55 +++++++++++++++++++++----------------- 6 files changed, 42 insertions(+), 24 deletions(-)