From patchwork Thu Oct 17 13:01:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 11195857 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4EBD1912 for ; Thu, 17 Oct 2019 13:08:30 +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 2E4582089C for ; Thu, 17 Oct 2019 13:08:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E4582089C 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:46874 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iL5W1-0006UC-1d for patchwork-qemu-devel@patchwork.kernel.org; Thu, 17 Oct 2019 09:08:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59961) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iL5S6-0000hK-M8 for qemu-devel@nongnu.org; Thu, 17 Oct 2019 09:04:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iL5S5-0008RV-5p for qemu-devel@nongnu.org; Thu, 17 Oct 2019 09:04:26 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60300) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iL5Ry-0008Mm-4U; Thu, 17 Oct 2019 09:04:18 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 62B4E307C64C; Thu, 17 Oct 2019 13:04:17 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-117-24.ams2.redhat.com [10.36.117.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id D623010027AB; Thu, 17 Oct 2019 13:04:15 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [RFC PATCH 06/18] qemu-storage-daemon: Add --nbd-server option Date: Thu, 17 Oct 2019 15:01:52 +0200 Message-Id: <20191017130204.16131-7-kwolf@redhat.com> In-Reply-To: <20191017130204.16131-1-kwolf@redhat.com> References: <20191017130204.16131-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Thu, 17 Oct 2019 13:04:17 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 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: kwolf@redhat.com, pkrempa@redhat.com, qemu-devel@nongnu.org, armbru@redhat.com, mreitz@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Add a --nbd-server option to qemu-storage-daemon to start the built-in NBD server right away. It maps the arguments for nbd-server-start to the command line. Example (only with required options): --nbd-server addr.type=inet,addr.host=localhost,addr.port=10809 Signed-off-by: Kevin Wolf --- qapi/block.json | 18 ++++++++++++++++++ include/block/nbd.h | 1 + blockdev-nbd.c | 5 +++++ qemu-storage-daemon.c | 26 +++++++++++++++++++++++++- Makefile.objs | 2 +- 5 files changed, 50 insertions(+), 2 deletions(-) diff --git a/qapi/block.json b/qapi/block.json index 145c268bb6..7fe0cf6538 100644 --- a/qapi/block.json +++ b/qapi/block.json @@ -215,6 +215,24 @@ '*id': 'str', '*force': 'bool' } } +## +# @NbdServerOptions: +# +# @addr: Address on which to listen. +# @tls-creds: ID of the TLS credentials object (since 2.6). +# @tls-authz: ID of the QAuthZ authorization object used to validate +# the client's x509 distinguished name. This object is +# is only resolved at time of use, so can be deleted and +# recreated on the fly while the NBD server is active. +# If missing, it will default to denying access (since 4.0). +# +# Since: 4.2 +## +{ 'struct': 'NbdServerOptions', + 'data': { 'addr': 'SocketAddress', + '*tls-creds': 'str', + '*tls-authz': 'str'} } + ## # @nbd-server-start: # diff --git a/include/block/nbd.h b/include/block/nbd.h index 316fd705a9..2a7441491a 100644 --- a/include/block/nbd.h +++ b/include/block/nbd.h @@ -353,6 +353,7 @@ void nbd_client_put(NBDClient *client); void nbd_server_start(SocketAddress *addr, const char *tls_creds, const char *tls_authz, Error **errp); +void nbd_server_start_options(NbdServerOptions *arg, Error **errp); /* nbd_read * Reads @size bytes from @ioc. Returns 0 on success. diff --git a/blockdev-nbd.c b/blockdev-nbd.c index 6a8b206e1d..d4c1fd4166 100644 --- a/blockdev-nbd.c +++ b/blockdev-nbd.c @@ -132,6 +132,11 @@ void nbd_server_start(SocketAddress *addr, const char *tls_creds, nbd_server = NULL; } +void nbd_server_start_options(NbdServerOptions *arg, Error **errp) +{ + nbd_server_start(arg->addr, arg->tls_creds, arg->tls_authz, errp); +} + void qmp_nbd_server_start(SocketAddressLegacy *addr, bool has_tls_creds, const char *tls_creds, bool has_tls_authz, const char *tls_authz, diff --git a/qemu-storage-daemon.c b/qemu-storage-daemon.c index 904e3c3a46..51882452f3 100644 --- a/qemu-storage-daemon.c +++ b/qemu-storage-daemon.c @@ -25,11 +25,14 @@ #include "qemu/osdep.h" #include "block/block.h" +#include "block/nbd.h" #include "crypto/init.h" #include "qapi/error.h" -#include "qapi/qapi-visit-block-core.h" +#include "qapi/qapi-commands-block.h" #include "qapi/qapi-commands-block-core.h" +#include "qapi/qapi-visit-block.h" +#include "qapi/qapi-visit-block-core.h" #include "qapi/qobject-input-visitor.h" #include "qemu-common.h" @@ -64,6 +67,12 @@ static void help(void) " [,driver specific parameters...]\n" " configure a block backend\n" "\n" +" --nbd-server addr.type=inet,addr.host=,addr.port=\n" +" [,tls-creds=][,tls-authz=]\n" +" --nbd-server addr.type=unix,addr.path=\n" +" [,tls-creds=][,tls-authz=]\n" +" start an NBD server for exporting block nodes\n" +"\n" " --object define a QOM object such as 'secret' for\n" " passwords and/or encryption keys\n" "\n" @@ -74,6 +83,7 @@ QEMU_HELP_BOTTOM "\n", enum { OPTION_OBJECT = 256, OPTION_BLOCKDEV, + OPTION_NBD_SERVER, }; static QemuOptsList qemu_object_opts = { @@ -95,6 +105,7 @@ static int process_options(int argc, char *argv[], Error **errp) {"help", no_argument, 0, 'h'}, {"object", required_argument, 0, OPTION_OBJECT}, {"blockdev", required_argument, 0, OPTION_BLOCKDEV}, + {"nbd-server", required_argument, 0, OPTION_NBD_SERVER}, {"version", no_argument, 0, 'V'}, {"trace", required_argument, NULL, 'T'}, {0, 0, 0, 0} @@ -152,6 +163,19 @@ static int process_options(int argc, char *argv[], Error **errp) qapi_free_BlockdevOptions(options); break; } + case OPTION_NBD_SERVER: + { + Visitor *v; + NbdServerOptions *options; + + v = qobject_input_visitor_new_str(optarg, NULL, &error_fatal); + visit_type_NbdServerOptions(v, NULL, &options, &error_fatal); + visit_free(v); + + nbd_server_start_options(options, &error_fatal); + qapi_free_NbdServerOptions(options); + break; + } } } if (optind != argc) { diff --git a/Makefile.objs b/Makefile.objs index 00fdf54500..cc262e445f 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -42,7 +42,7 @@ io-obj-y = io/ # used for system emulation, too, but specified separately there) storage-daemon-obj-y = block/ -storage-daemon-obj-y += blockdev.o iothread.o +storage-daemon-obj-y += blockdev.o blockdev-nbd.o iothread.o ###################################################################### # Target independent part of system emulation. The long term path is to