From patchwork Mon Feb 24 14:29:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 11400663 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 D70C7924 for ; Mon, 24 Feb 2020 14:38:24 +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 AB9CD24650 for ; Mon, 24 Feb 2020 14:38:24 +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="f53POqkI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB9CD24650 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]:37462 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j6EsJ-0007dw-P6 for patchwork-qemu-devel@patchwork.kernel.org; Mon, 24 Feb 2020 09:38:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50790) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j6El7-00021D-5T for qemu-devel@nongnu.org; Mon, 24 Feb 2020 09:30:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j6El5-0002NC-GR for qemu-devel@nongnu.org; Mon, 24 Feb 2020 09:30:57 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:23928 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j6El5-0002N3-CY for qemu-devel@nongnu.org; Mon, 24 Feb 2020 09:30:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582554655; 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: in-reply-to:in-reply-to:references:references; bh=yYfHCSmvHKQJVbaPyMjxeFcUEJwMQfNJRAncsiwZcUk=; b=f53POqkIiKyv4t4w6dnI65HUCRmZ2/zLH9ULhm+0gIs/ZL1zdb05Y6jt1sWUtKX7vvE+8c KzkGeeBPFPEt5Vo+zfJnR7+3NTOwj2vl7ueBE0stTfiSGsnEvXn5UCLIUp09vTxJlwrRAC FHOZNlLz9mrqn/+/U06QxIyS22an2kM= 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-348-wel-zk7_Mvyg-trXnl954g-1; Mon, 24 Feb 2020 09:30:51 -0500 X-MC-Unique: wel-zk7_Mvyg-trXnl954g-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2A3A68018B4; Mon, 24 Feb 2020 14:30:50 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-117-134.ams2.redhat.com [10.36.117.134]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6A6125C114; Mon, 24 Feb 2020 14:30:48 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH v2 09/20] qemu-storage-daemon: Add --nbd-server option Date: Mon, 24 Feb 2020 15:29:57 +0100 Message-Id: <20200224143008.13362-10-kwolf@redhat.com> In-Reply-To: <20200224143008.13362-1-kwolf@redhat.com> References: <20200224143008.13362-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 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, qemu-devel@nongnu.org, armbru@redhat.com, coiby.xu@gmail.com, mreitz@redhat.com, stefanha@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, with the exception that it uses SocketAddress instead of SocketAddressLegacy: New interfaces shouldn't use legacy types, and the additional nesting would be nasty on 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-core.json | 24 ++++++++++++++++++++++++ include/block/nbd.h | 1 + blockdev-nbd.c | 5 +++++ qemu-storage-daemon.c | 26 +++++++++++++++++++++++++- Makefile.objs | 2 +- 5 files changed, 56 insertions(+), 2 deletions(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index b65b6a9f49..f8888f06c8 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -5062,6 +5062,27 @@ 'iothread': 'StrOrNull', '*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). +# +# Keep this type consistent with the nbd-server-start arguments. The only +# intended difference is using SocketAddress instead of SocketAddressLegacy. +# +# Since: 4.2 +## +{ 'struct': 'NbdServerOptions', + 'data': { 'addr': 'SocketAddress', + '*tls-creds': 'str', + '*tls-authz': 'str'} } + ## # @nbd-server-start: # @@ -5080,6 +5101,9 @@ # # Returns: error if the server is already running. # +# Keep this type consistent with the NbdServerOptions type. The only intended +# difference is using SocketAddressLegacy instead of SocketAddress. +# # Since: 1.3.0 ## { 'command': 'nbd-server-start', diff --git a/include/block/nbd.h b/include/block/nbd.h index 7f46932d80..20363280ae 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 de2f2ff713..d8c892f7da 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 0cd8144c81..276a412915 100644 --- a/qemu-storage-daemon.c +++ b/qemu-storage-daemon.c @@ -28,11 +28,14 @@ #include #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/qmp/qdict.h" #include "qapi/qobject-input-visitor.h" @@ -67,6 +70,12 @@ 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 help list object types that can be added\n" " --object ,help list properties for the given object type\n" " --object [,=...]\n" @@ -82,6 +91,7 @@ QEMU_HELP_BOTTOM "\n", enum { OPTION_BLOCKDEV = 256, + OPTION_NBD_SERVER, OPTION_OBJECT, }; @@ -101,6 +111,7 @@ static void process_options(int argc, char *argv[]) static const struct option long_options[] = { {"blockdev", required_argument, NULL, OPTION_BLOCKDEV}, {"help", no_argument, NULL, 'h'}, + {"nbd-server", required_argument, NULL, OPTION_NBD_SERVER}, {"object", required_argument, NULL, OPTION_OBJECT}, {"trace", required_argument, NULL, 'T'}, {"version", no_argument, NULL, 'V'}, @@ -145,6 +156,19 @@ static void process_options(int argc, char *argv[]) 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; + } case OPTION_OBJECT: { QemuOpts *opts; diff --git a/Makefile.objs b/Makefile.objs index fa92b00427..25ab313690 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -32,7 +32,7 @@ endif # CONFIG_SOFTMMU or CONFIG_TOOLS # used for system emulation, too, but specified separately there) storage-daemon-obj-y = block/ qom/ -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