From patchwork Wed Jul 13 12:57:44 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Devin Nakamura X-Patchwork-Id: 104503 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D2D66B6F6B for ; Wed, 13 Jul 2011 23:04:32 +1000 (EST) Received: from localhost ([::1]:51307 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qgz77-0006P0-EI for incoming@patchwork.ozlabs.org; Wed, 13 Jul 2011 09:04:29 -0400 Received: from eggs.gnu.org ([140.186.70.92]:47584) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qgz26-0005xf-Hg for qemu-devel@nongnu.org; Wed, 13 Jul 2011 08:59:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Qgz24-0006Qe-Pw for qemu-devel@nongnu.org; Wed, 13 Jul 2011 08:59:17 -0400 Received: from mail-gw0-f45.google.com ([74.125.83.45]:58827) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qgz24-0006Nw-D8 for qemu-devel@nongnu.org; Wed, 13 Jul 2011 08:59:16 -0400 Received: by mail-gw0-f45.google.com with SMTP id 19so2785192gwb.4 for ; Wed, 13 Jul 2011 05:59:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=Tix6rfqYttNdW7X11yIMSKISkMAj+78/0aBRz5K9KUM=; b=R/hGDMAH1VnkQ3mJXpCGGxaxl+KMX//+vi0P4wydrUStaSu3tjn5fsIwUNnHIdbk2G K/0Hni9qbuO+a1nrjdzM2YVig/+D+LD+CZ2Y1WrgYJodJ1567EbHPQDViNOL3kGJAbW0 /ojRIub6X3k4sx8Dajx8cwLuDZlSNe8gs12g8= Received: by 10.236.136.72 with SMTP id v48mr1457350yhi.444.1310561956106; Wed, 13 Jul 2011 05:59:16 -0700 (PDT) Received: from localhost.localdomain (d72-39-252-38.home1.cgocable.net [72.39.252.38]) by mx.google.com with ESMTPS id e24sm11045864yhk.79.2011.07.13.05.59.14 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 13 Jul 2011 05:59:14 -0700 (PDT) From: Devin Nakamura To: qemu-devel@nongnu.org Date: Wed, 13 Jul 2011 08:57:44 -0400 Message-Id: <1310561864-18964-6-git-send-email-devin122@gmail.com> X-Mailer: git-send-email 1.7.6.rc1 In-Reply-To: <1310561864-18964-1-git-send-email-devin122@gmail.com> References: <1310561864-18964-1-git-send-email-devin122@gmail.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 74.125.83.45 Cc: kwolf@redhat.com, Devin Nakamura Subject: [Qemu-devel] [PATCH v3 6/6] block: add bdrv_copy_header() 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 Signed-off-by: Devin Nakamura --- block.c | 12 ++++++++++++ block.h | 2 ++ 2 files changed, 14 insertions(+), 0 deletions(-) diff --git a/block.c b/block.c index 86a4752..0f38aff 100644 --- a/block.c +++ b/block.c @@ -3105,3 +3105,15 @@ int bdrv_map(BlockDriverState *bs, uint64_t *guest_offset, return drv->bdrv_map(bs, guest_offset, host_offset, contiguous_bytes); } + +int bdrv_copy_header(BlockDriverState *bs) +{ + BlockDriver *drv = bs->drv; + if (!drv) { + return -ENOMEDIUM; + } + if (!drv->bdrv_copy_header) { + return -ENOTSUP; + } + return drv->bdrv_copy_header(bs); +} diff --git a/block.h b/block.h index baf6f10..169866c 100644 --- a/block.h +++ b/block.h @@ -259,6 +259,8 @@ int bdrv_get_mapping(BlockDriverState *bs, uint64_t *guest_offset, uint64_t *host_offset, uint64_t *contiguous_bytes); int bdrv_map(BlockDriverState *bs, uint64_t *guest_offset, uint64_t *host_offset, uint64_t *contiguous_bytes); +int bdrv_copy_header(BlockDriverState *bs); + typedef enum { BLKDBG_L1_UPDATE,