From patchwork Sat Dec 15 14:09:30 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Weil X-Patchwork-Id: 206620 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 1C85E2C00D7 for ; Sun, 16 Dec 2012 01:10:15 +1100 (EST) Received: from localhost ([::1]:56043 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TjsRP-00008G-BS for incoming@patchwork.ozlabs.org; Sat, 15 Dec 2012 09:10:11 -0500 Received: from eggs.gnu.org ([208.118.235.92]:59406) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TjsR7-0008NV-UE for qemu-devel@nongnu.org; Sat, 15 Dec 2012 09:09:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TjsR5-0003Pa-DZ for qemu-devel@nongnu.org; Sat, 15 Dec 2012 09:09:53 -0500 Received: from v220110690675601.yourvserver.net ([78.47.199.172]:44083) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TjsR5-0003PV-7Y for qemu-devel@nongnu.org; Sat, 15 Dec 2012 09:09:51 -0500 Received: from localhost (v220110690675601.yourvserver.net.local [127.0.0.1]) by v220110690675601.yourvserver.net (Postfix) with ESMTP id D22777280049; Sat, 15 Dec 2012 15:09:50 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at weilnetz.de Received: from v220110690675601.yourvserver.net ([127.0.0.1]) by localhost (v220110690675601.yourvserver.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QaHy1g5UBJx4; Sat, 15 Dec 2012 15:09:48 +0100 (CET) Received: by v220110690675601.yourvserver.net (Postfix, from userid 1000) id 5DC66728004A; Sat, 15 Dec 2012 15:09:48 +0100 (CET) From: Stefan Weil To: Stefan Hajnoczi , Kevin Wolf Date: Sat, 15 Dec 2012 15:09:30 +0100 Message-Id: <1355580573-19323-2-git-send-email-sw@weilnetz.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1355580573-19323-1-git-send-email-sw@weilnetz.de> References: <1355580573-19323-1-git-send-email-sw@weilnetz.de> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 78.47.199.172 Cc: Stefan Weil , qemu-devel@nongnu.org Subject: [Qemu-devel] [PATCH 1/4] block: Add special error code for wrong format 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 block drivers normally return -errno for typical errors. There is no appropriate error code for "wrong format", so use a special error code which does not conflict with system error codes. Signed-off-by: Stefan Weil --- block.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block.h b/block.h index 893448a..829e18b 100644 --- a/block.h +++ b/block.h @@ -90,6 +90,13 @@ typedef struct BlockDevOps { #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS) #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1) +/* The block drivers normally return -errno for typical errors. + * There is no appropriate error code for "wrong format", so + * use a special error code which does not conflict with system + * error codes. + */ +#define BDRV_WRONG_FORMAT INT_MIN + typedef enum { BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP } BlockErrorAction;