From patchwork Wed Feb 17 10:10:19 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 8335971 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F07B4C02AA for ; Wed, 17 Feb 2016 10:15:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EEA92202BE for ; Wed, 17 Feb 2016 10:15:13 +0000 (UTC) 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.kernel.org (Postfix) with ESMTPS id D495D202FE for ; Wed, 17 Feb 2016 10:15:12 +0000 (UTC) Received: from localhost ([::1]:55973 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVz8Z-0003aS-U1 for patchwork-qemu-devel@patchwork.kernel.org; Wed, 17 Feb 2016 05:15:11 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54897) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVz4N-0005HH-U7 for qemu-devel@nongnu.org; Wed, 17 Feb 2016 05:10:53 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aVz4H-0004v7-Uf for qemu-devel@nongnu.org; Wed, 17 Feb 2016 05:10:51 -0500 Received: from mx1.redhat.com ([209.132.183.28]:37391) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVz49-0004sO-Jl; Wed, 17 Feb 2016 05:10:37 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 537022DC371; Wed, 17 Feb 2016 10:10:37 +0000 (UTC) Received: from t530wlan.home.berrange.com.com (vpn1-5-154.ams2.redhat.com [10.36.5.154]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1HAARvq006532; Wed, 17 Feb 2016 05:10:35 -0500 From: "Daniel P. Berrange" To: qemu-devel@nongnu.org Date: Wed, 17 Feb 2016 10:10:19 +0000 Message-Id: <1455703823-12159-5-git-send-email-berrange@redhat.com> In-Reply-To: <1455703823-12159-1-git-send-email-berrange@redhat.com> References: <1455703823-12159-1-git-send-email-berrange@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Kevin Wolf , qemu-block@nongnu.org Subject: [Qemu-devel] [PATCH v7 4/8] qemu-nbd: allow specifying image as a set of options args X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently qemu-nbd allows an image filename to be passed on the command line, but unless using the JSON format, it does not have a way to set any options except the format eg qemu-nbd https://127.0.0.1/images/centos7.iso qemu-nbd /home/berrange/demo.qcow2 This adds a --image-opts arg that indicates that the positional filename should be interpreted as a full option string, not just a filename. qemu-nbd --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off qemu-nbd --image-opts driver=file,filename=/home/berrange/demo.qcow2 This flag is mutually exclusive with the '-f' flag. Signed-off-by: Daniel P. Berrange --- qemu-nbd.c | 43 ++++++++++++++++++++++++++++++++++++++----- qemu-nbd.texi | 7 ++++++- 2 files changed, 44 insertions(+), 6 deletions(-) diff --git a/qemu-nbd.c b/qemu-nbd.c index 933ca4a..424e71f 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -43,6 +43,7 @@ #define QEMU_NBD_OPT_DETECT_ZEROES 4 #define QEMU_NBD_OPT_OBJECT 5 #define QEMU_NBD_OPT_TLSCREDS 6 +#define QEMU_NBD_OPT_IMAGE_OPTS 7 static NBDExport *exp; static bool newproto; @@ -105,6 +106,7 @@ static void usage(const char *name) " --aio=MODE set AIO mode (native or threads)\n" " --discard=MODE set discard mode (ignore, unmap)\n" " --detect-zeroes=MODE set detect-zeroes mode (off, on, unmap)\n" +" --image-opts treat FILE as a full set of image options\n" "\n" "Report bugs to \n" , name, NBD_DEFAULT_PORT, "DEVICE"); @@ -394,6 +396,16 @@ static SocketAddress *nbd_build_socket_address(const char *sockpath, } +static QemuOptsList file_opts = { + .name = "file", + .implied_opt_name = "file", + .head = QTAILQ_HEAD_INITIALIZER(file_opts.head), + .desc = { + /* no elements => accept any params */ + { /* end of list */ } + }, +}; + static QemuOptsList qemu_object_opts = { .name = "object", .implied_opt_name = "qom-type", @@ -475,6 +487,7 @@ int main(int argc, char **argv) { "object", 1, NULL, QEMU_NBD_OPT_OBJECT }, { "export-name", 1, NULL, 'x' }, { "tls-creds", 1, NULL, QEMU_NBD_OPT_TLSCREDS }, + { "image-opts", 0, NULL, QEMU_NBD_OPT_IMAGE_OPTS }, { NULL, 0, NULL, 0 } }; int ch; @@ -493,6 +506,7 @@ int main(int argc, char **argv) QDict *options = NULL; const char *export_name = NULL; const char *tlscredsid = NULL; + bool imageOpts = false; /* The client thread uses SIGTERM to interrupt the server. A signal * handler ensures that "qemu-nbd -v -c" exits with a nice status code. @@ -672,6 +686,9 @@ int main(int argc, char **argv) case QEMU_NBD_OPT_TLSCREDS: tlscredsid = optarg; break; + case QEMU_NBD_OPT_IMAGE_OPTS: + imageOpts = true; + break; } } @@ -800,13 +817,29 @@ int main(int argc, char **argv) bdrv_init(); atexit(bdrv_close_all); - if (fmt) { - options = qdict_new(); - qdict_put(options, "driver", qstring_from_str(fmt)); + srcpath = argv[optind]; + if (imageOpts) { + QemuOpts *opts; + if (fmt) { + error_report("--image-opts and -f are mutually exclusive"); + exit(EXIT_FAILURE); + } + opts = qemu_opts_parse_noisily(&file_opts, srcpath, true); + if (!opts) { + qemu_opts_reset(&file_opts); + exit(EXIT_FAILURE); + } + options = qemu_opts_to_qdict(opts, NULL); + qemu_opts_reset(&file_opts); + blk = blk_new_open("hda", NULL, NULL, options, flags, &local_err); + } else { + if (fmt) { + options = qdict_new(); + qdict_put(options, "driver", qstring_from_str(fmt)); + } + blk = blk_new_open("hda", srcpath, NULL, options, flags, &local_err); } - srcpath = argv[optind]; - blk = blk_new_open("hda", srcpath, NULL, options, flags, &local_err); if (!blk) { error_reportf_err(local_err, "Failed to blk_new_open '%s': ", argv[optind]); diff --git a/qemu-nbd.texi b/qemu-nbd.texi index 227a73c..9f23343 100644 --- a/qemu-nbd.texi +++ b/qemu-nbd.texi @@ -13,7 +13,8 @@ Export a QEMU disk image using the NBD protocol. @c man end @c man begin OPTIONS -@var{filename} is a disk image filename. +@var{filename} is a disk image filename, or a set of block +driver options if @var{--image-opts} is specified. @var{dev} is an NBD device. @@ -33,6 +34,10 @@ The offset into the image The interface to bind to (default @samp{0.0.0.0}) @item -k, --socket=@var{path} Use a unix socket with path @var{path} +@item --image-opts +Treat @var{filename} as a set of image options, instead of a plain +filename. If this flag is specified, the @var{-f} flag should +not be used, instead the '@code{format=}' option should be set. @item -f, --format=@var{fmt} Force the use of the block driver for format @var{fmt} instead of auto-detecting