From patchwork Thu May 2 02:26:43 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wayne Xia X-Patchwork-Id: 240884 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 2E5E82C00D8 for ; Thu, 2 May 2013 12:31:10 +1000 (EST) Received: from localhost ([::1]:52937 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UXjIZ-0006vP-Ig for incoming@patchwork.ozlabs.org; Wed, 01 May 2013 22:31:07 -0400 Received: from eggs.gnu.org ([208.118.235.92]:53386) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UXjGL-0003lT-9t for qemu-devel@nongnu.org; Wed, 01 May 2013 22:28:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UXjGK-0002qd-7A for qemu-devel@nongnu.org; Wed, 01 May 2013 22:28:49 -0400 Received: from e23smtp03.au.ibm.com ([202.81.31.145]:52152) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UXjGJ-0002qP-LM for qemu-devel@nongnu.org; Wed, 01 May 2013 22:28:48 -0400 Received: from /spool/local by e23smtp03.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Thu, 2 May 2013 12:20:31 +1000 Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [9.190.235.21]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 0F6343578053 for ; Thu, 2 May 2013 12:28:28 +1000 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r422SL5P23396568 for ; Thu, 2 May 2013 12:28:21 +1000 Received: from d23av04.au.ibm.com (loopback [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r422SRJn011257 for ; Thu, 2 May 2013 12:28:27 +1000 Received: from RH63Wenchao (wenchaox.cn.ibm.com [9.115.122.225]) by d23av04.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r422QrHJ008158; Thu, 2 May 2013 12:28:25 +1000 From: Wenchao Xia To: qemu-devel@nongnu.org Date: Thu, 2 May 2013 10:26:43 +0800 Message-Id: <1367461606-7554-3-git-send-email-xiawenc@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1367461606-7554-1-git-send-email-xiawenc@linux.vnet.ibm.com> References: <1367461606-7554-1-git-send-email-xiawenc@linux.vnet.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13050202-6102-0000-0000-0000036ACF71 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 202.81.31.145 Cc: kwolf@redhat.com, stefanha@gmail.com, dietmar@proxmox.com, pbonzini@redhat.com, Wenchao Xia Subject: [Qemu-devel] [PATCH V4 2/5] block: move input parsing code in qmp_transaction() 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The code is moved into preparation function, and changed a bit to tip more clearly what it is doing. Signed-off-by: Wenchao Xia Reviewed-by: Eric Blake --- blockdev.c | 38 +++++++++++++++++++------------------- 1 files changed, 19 insertions(+), 19 deletions(-) diff --git a/blockdev.c b/blockdev.c index 14784eb..06100d7 100644 --- a/blockdev.c +++ b/blockdev.c @@ -785,10 +785,7 @@ typedef struct BlkTransactionStates { QSIMPLEQ_ENTRY(BlkTransactionStates) entry; } BlkTransactionStates; -static void external_snapshot_prepare(const char *device, - const char *format, - const char *new_image_file, - enum NewImageMode mode, +static void external_snapshot_prepare(BlockdevAction *action, BlkTransactionStates *states, Error **errp) { @@ -796,7 +793,24 @@ static void external_snapshot_prepare(const char *device, BlockDriver *drv; int flags, ret; Error *local_err = NULL; + const char *device; + const char *new_image_file; + const char *format = "qcow2"; + enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; + /* get parameters */ + g_assert(action->kind == BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); + + device = action->blockdev_snapshot_sync->device; + new_image_file = action->blockdev_snapshot_sync->snapshot_file; + if (action->blockdev_snapshot_sync->has_format) { + format = action->blockdev_snapshot_sync->format; + } + if (action->blockdev_snapshot_sync->has_mode) { + mode = action->blockdev_snapshot_sync->mode; + } + + /* start processing */ drv = bdrv_find_format(format); if (!drv) { error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); @@ -877,10 +891,6 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp) /* We don't do anything in this loop that commits us to the snapshot */ while (NULL != dev_entry) { BlockdevAction *dev_info = NULL; - enum NewImageMode mode; - const char *new_image_file; - const char *device; - const char *format = "qcow2"; dev_info = dev_entry->value; dev_entry = dev_entry->next; @@ -890,17 +900,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp) switch (dev_info->kind) { case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: - device = dev_info->blockdev_snapshot_sync->device; - if (!dev_info->blockdev_snapshot_sync->has_mode) { - dev_info->blockdev_snapshot_sync->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; - } - new_image_file = dev_info->blockdev_snapshot_sync->snapshot_file; - if (dev_info->blockdev_snapshot_sync->has_format) { - format = dev_info->blockdev_snapshot_sync->format; - } - mode = dev_info->blockdev_snapshot_sync->mode; - external_snapshot_prepare(device, format, new_image_file, - mode, states, &local_err); + external_snapshot_prepare(dev_info, states, errp); if (error_is_set(&local_err)) { error_propagate(errp, local_err); goto delete_and_fail;