From patchwork Sat Apr 13 15:20:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Reitz X-Patchwork-Id: 1085141 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=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 44hJQ94Sjvz9sBV for ; Sun, 14 Apr 2019 01:21:37 +1000 (AEST) Received: from localhost ([127.0.0.1]:52707 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hFKTH-0006jS-E9 for incoming@patchwork.ozlabs.org; Sat, 13 Apr 2019 11:21:35 -0400 Received: from eggs.gnu.org ([209.51.188.92]:43371) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hFKSW-0006fb-H5 for qemu-devel@nongnu.org; Sat, 13 Apr 2019 11:20:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hFKSV-0000cY-G4 for qemu-devel@nongnu.org; Sat, 13 Apr 2019 11:20:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55168) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hFKSS-0000ZB-RY; Sat, 13 Apr 2019 11:20:45 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2BDD03082E70; Sat, 13 Apr 2019 15:20:44 +0000 (UTC) Received: from localhost (ovpn-204-66.brq.redhat.com [10.40.204.66]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BB73460BFB; Sat, 13 Apr 2019 15:20:43 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Date: Sat, 13 Apr 2019 17:20:37 +0200 Message-Id: <20190413152037.6817-3-mreitz@redhat.com> In-Reply-To: <20190413152037.6817-1-mreitz@redhat.com> References: <20190413152037.6817-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Sat, 13 Apr 2019 15:20:44 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH for-next 2/2] qemu-img: Make create hint at protocol options 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: Kevin Wolf , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" qemu-img create allows giving just a format and "-o help" to get a list of the options supported by that format. Users may not realize that the protocol level may offer even more options, which they only get to see by specifying a filename. This patch adds a note to hint at that fact. Signed-off-by: Max Reitz --- qemu-img.c | 13 ++++++++++++- tests/qemu-iotests/082.out | 20 ++++++++++++++++---- 2 files changed, 28 insertions(+), 5 deletions(-) diff --git a/qemu-img.c b/qemu-img.c index aa6f81f1ea..0016e24efe 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -269,9 +269,20 @@ static int print_block_option_help(const char *filename, const char *fmt) create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); } - printf("Supported options:\n"); + if (filename) { + printf("Supported options:\n"); + } else { + printf("Supported %s options:\n", fmt); + } qemu_opts_print_help(create_opts, false); qemu_opts_free(create_opts); + + if (!filename) { + printf("\n" + "The protocol level may support further options.\n" + "Specify the target filename to include those options.\n"); + } + return 0; } diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out index 9a23b68511..7e25706813 100644 --- a/tests/qemu-iotests/082.out +++ b/tests/qemu-iotests/082.out @@ -242,7 +242,7 @@ Testing: create -f qcow2 -o backing_file=TEST_DIR/t.qcow2 -o ,, -o help TEST_DIR qemu-img: Invalid option list: ,, Testing: create -f qcow2 -o help -Supported options: +Supported qcow2 options: backing_file= - File name of a base image backing_fmt= - Image format of the base image cluster_size= - qcow2 cluster size @@ -263,10 +263,16 @@ Supported options: refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size +The protocol level may support further options. +Specify the target filename to include those options. + Testing: create -o help -Supported options: +Supported raw options: size= - Virtual disk size +The protocol level may support further options. +Specify the target filename to include those options. + Testing: create -f bochs -o help qemu-img: Format driver 'bochs' does not support image creation @@ -516,7 +522,7 @@ Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2 -o ,, -o help TEST_DI qemu-img: Invalid option list: ,, Testing: convert -O qcow2 -o help -Supported options: +Supported qcow2 options: backing_file= - File name of a base image backing_fmt= - Image format of the base image cluster_size= - qcow2 cluster size @@ -537,10 +543,16 @@ Supported options: refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size +The protocol level may support further options. +Specify the target filename to include those options. + Testing: convert -o help -Supported options: +Supported raw options: size= - Virtual disk size +The protocol level may support further options. +Specify the target filename to include those options. + Testing: convert -O bochs -o help qemu-img: Format driver 'bochs' does not support image creation