From patchwork Wed Jun 2 16:55:20 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 54391 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 97FB5B7D1F for ; Thu, 3 Jun 2010 02:59:21 +1000 (EST) Received: from localhost ([127.0.0.1]:56810 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OJrH0-00080f-Ah for incoming@patchwork.ozlabs.org; Wed, 02 Jun 2010 12:58:34 -0400 Received: from [140.186.70.92] (port=40048 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OJrES-0007Rc-Rt for qemu-devel@nongnu.org; Wed, 02 Jun 2010 12:56:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OJrE4-0005gJ-1D for qemu-devel@nongnu.org; Wed, 02 Jun 2010 12:55:41 -0400 Received: from oxygen.pond.sub.org ([213.239.205.148]:35279) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OJrE3-0005fT-PB for qemu-devel@nongnu.org; Wed, 02 Jun 2010 12:55:31 -0400 Received: from blackfin.pond.sub.org (pD9E39C24.dip.t-dialin.net [217.227.156.36]) by oxygen.pond.sub.org (Postfix) with ESMTPA id C0DE5276FF4 for ; Wed, 2 Jun 2010 18:55:29 +0200 (CEST) Received: by blackfin.pond.sub.org (Postfix, from userid 500) id 4D4602BF; Wed, 2 Jun 2010 18:55:29 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Wed, 2 Jun 2010 18:55:20 +0200 Message-Id: <1275497729-13120-5-git-send-email-armbru@redhat.com> X-Mailer: git-send-email 1.6.6.1 In-Reply-To: <1275497729-13120-1-git-send-email-armbru@redhat.com> References: <1275497729-13120-1-git-send-email-armbru@redhat.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) Cc: kwolf@redhat.com, kraxel@redhat.com Subject: [Qemu-devel] [PATCH 04/13] block: New bdrv_next() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is a more flexible alternative to bdrv_iterate(). Signed-off-by: Markus Armbruster --- block.c | 8 ++++++++ block.h | 1 + 2 files changed, 9 insertions(+), 0 deletions(-) diff --git a/block.c b/block.c index 1bef649..f42960c 100644 --- a/block.c +++ b/block.c @@ -1330,6 +1330,14 @@ BlockDriverState *bdrv_find(const char *name) return NULL; } +BlockDriverState *bdrv_next(BlockDriverState *bs) +{ + if (!bs) { + return QTAILQ_FIRST(&bdrv_states); + } + return QTAILQ_NEXT(bs, list); +} + void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), void *opaque) { BlockDriverState *bs; diff --git a/block.h b/block.h index 49e3dcf..29993d1 100644 --- a/block.h +++ b/block.h @@ -168,6 +168,7 @@ void bdrv_set_change_cb(BlockDriverState *bs, void (*change_cb)(void *opaque), void *opaque); void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); BlockDriverState *bdrv_find(const char *name); +BlockDriverState *bdrv_next(BlockDriverState *bs); void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), void *opaque); int bdrv_is_encrypted(BlockDriverState *bs);