From nobody Sun Oct 5 19:25:47 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1516242978923301.7016828290331; Wed, 17 Jan 2018 18:36:18 -0800 (PST) Received: from localhost ([::1]:53499 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ec03u-0004A7-7O for importer@patchew.org; Wed, 17 Jan 2018 21:36:18 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50570) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ebzud-0005ZU-OR for qemu-devel@nongnu.org; Wed, 17 Jan 2018 21:26:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ebzuc-00016g-I3 for qemu-devel@nongnu.org; Wed, 17 Jan 2018 21:26:43 -0500 Received: from mx1.redhat.com ([209.132.183.28]:40126) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ebzuX-0000zg-RO; Wed, 17 Jan 2018 21:26:38 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DFFFE8553F; Thu, 18 Jan 2018 02:26:36 +0000 (UTC) Received: from red.redhat.com (ovpn-126-198.rdu2.redhat.com [10.10.126.198]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2B085177DD; Thu, 18 Jan 2018 02:26:36 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Date: Wed, 17 Jan 2018 20:26:20 -0600 Message-Id: <20180118022625.6462-2-eblake@redhat.com> In-Reply-To: <20180118022625.6462-1-eblake@redhat.com> References: <20180118022625.6462-1-eblake@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Thu, 18 Jan 2018 02:26:37 +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 Subject: [Qemu-devel] [PULL 1/6] nbd/server: Hoist nbd_reject_length() earlier 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: Paolo Bonzini , "open list:Network Block Dev..." Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" No semantic change, but will make it easier for an upcoming patch to refactor code without having to add forward declarations. Fix a poor comment while at it. Signed-off-by: Eric Blake Reviewed-by: Vladimir Sementsov-Ogievskiy Message-Id: <20180110230825.18321-2-eblake@redhat.com> --- nbd/server.c | 58 +++++++++++++++++++++++++++++---------------------------= -- 1 file changed, 29 insertions(+), 29 deletions(-) diff --git a/nbd/server.c b/nbd/server.c index 6cf2eeb2c1a..5ba12f3c0b3 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2016-2017 Red Hat, Inc. + * Copyright (C) 2016-2018 Red Hat, Inc. * Copyright (C) 2005 Anthony Liguori * * Network Block Device Server Side @@ -348,6 +348,34 @@ static int nbd_negotiate_send_info(NBDClient *client, = uint32_t opt, return 0; } +/* nbd_reject_length: Handle any unexpected payload. + * @fatal requests that we quit talking to the client, even if we are able + * to successfully send an error reply. + * Return: + * -errno transmission error occurred or @fatal was requested, errp is set + * 0 error message successfully sent to client, errp is not set + */ +static int nbd_reject_length(NBDClient *client, uint32_t length, + uint32_t option, bool fatal, Error **errp) +{ + int ret; + + assert(length); + if (nbd_drop(client->ioc, length, errp) < 0) { + return -EIO; + } + ret =3D nbd_negotiate_send_rep_err(client->ioc, NBD_REP_ERR_INVALID, + option, errp, + "option '%s' should have zero length", + nbd_opt_lookup(option)); + if (fatal && !ret) { + error_setg(errp, "option '%s' should have zero length", + nbd_opt_lookup(option)); + return -EINVAL; + } + return ret; +} + /* Handle NBD_OPT_INFO and NBD_OPT_GO. * Return -errno on error, 0 if ready for next option, and 1 to move * into transmission phase. */ @@ -570,34 +598,6 @@ static QIOChannel *nbd_negotiate_handle_starttls(NBDCl= ient *client, return QIO_CHANNEL(tioc); } -/* nbd_reject_length: Handle any unexpected payload. - * @fatal requests that we quit talking to the client, even if we are able - * to successfully send an error to the guest. - * Return: - * -errno transmission error occurred or @fatal was requested, errp is set - * 0 error message successfully sent to client, errp is not set - */ -static int nbd_reject_length(NBDClient *client, uint32_t length, - uint32_t option, bool fatal, Error **errp) -{ - int ret; - - assert(length); - if (nbd_drop(client->ioc, length, errp) < 0) { - return -EIO; - } - ret =3D nbd_negotiate_send_rep_err(client->ioc, NBD_REP_ERR_INVALID, - option, errp, - "option '%s' should have zero length", - nbd_opt_lookup(option)); - if (fatal && !ret) { - error_setg(errp, "option '%s' should have zero length", - nbd_opt_lookup(option)); - return -EINVAL; - } - return ret; -} - /* nbd_negotiate_options * Process all NBD_OPT_* client option commands, during fixed newstyle * negotiation. --=20 2.14.3