From patchwork Thu Jul 14 19:03:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: clord@redhat.com X-Patchwork-Id: 648567 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3rr5cR0hP6z9s9Y for ; Fri, 15 Jul 2016 05:39:19 +1000 (AEST) Received: from localhost ([::1]:56489 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNmTc-0006tV-Uv for incoming@patchwork.ozlabs.org; Thu, 14 Jul 2016 15:39:17 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60645) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNlvP-00047d-3p for qemu-devel@nongnu.org; Thu, 14 Jul 2016 15:03:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bNlvL-0002m6-12 for qemu-devel@nongnu.org; Thu, 14 Jul 2016 15:03:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46865) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNlvH-0002ja-D1; Thu, 14 Jul 2016 15:03:47 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 042EB7F3F9; Thu, 14 Jul 2016 19:03:47 +0000 (UTC) Received: from dhcp-17-138.bos.redhat.com (dhcp-17-130.bos.redhat.com [10.18.17.130]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u6EJ3T8j000405; Thu, 14 Jul 2016 15:03:46 -0400 From: Colin Lord To: qemu-devel@nongnu.org Date: Thu, 14 Jul 2016 15:03:18 -0400 Message-Id: <1468523008-30013-23-git-send-email-clord@redhat.com> In-Reply-To: <1468523008-30013-1-git-send-email-clord@redhat.com> References: <1468523008-30013-1-git-send-email-clord@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Thu, 14 Jul 2016 19:03:47 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v4 22/32] blockdev: Separate qcow probe from its driver 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: kwolf@redhat.com, Colin Lord , qemu-block@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Completes the separation of the qcow probe from the qcow driver. The qcow probe now returns the format in addition to the score, allowing correlation of the score and driver without the probe function being part of the driver itself. Signed-off-by: Colin Lord Reviewed-by: Max Reitz --- block.c | 1 + block/qcow-probe.c | 16 +++++++++++----- block/qcow.c | 1 - include/block/probe.h | 3 ++- 4 files changed, 14 insertions(+), 7 deletions(-) diff --git a/block.c b/block.c index 18974c6..f531ad0 100644 --- a/block.c +++ b/block.c @@ -66,6 +66,7 @@ static BdrvProbeFunc *format_probes[] = { bdrv_crypto_probe_luks, bdrv_dmg_probe, bdrv_parallels_probe, + bdrv_qcow_probe, }; static QTAILQ_HEAD(, BlockDriverState) graph_bdrv_states = diff --git a/block/qcow-probe.c b/block/qcow-probe.c index c5fd214..36bbd05 100644 --- a/block/qcow-probe.c +++ b/block/qcow-probe.c @@ -3,14 +3,20 @@ #include "block/probe.h" #include "qcow.h" -int qcow_probe(const uint8_t *buf, int buf_size, const char *filename) +const char *bdrv_qcow_probe(const uint8_t *buf, int buf_size, + const char *filename, int *score) { + const char *format = "qcow"; const QCowHeader *cow_header = (const void *)buf; + assert(score); if (buf_size >= sizeof(QCowHeader) && be32_to_cpu(cow_header->magic) == QCOW_MAGIC && - be32_to_cpu(cow_header->version) == QCOW_VERSION) - return 100; - else - return 0; + be32_to_cpu(cow_header->version) == QCOW_VERSION) { + *score = 100; + return format; + } + + *score = 0; + return format; } diff --git a/block/qcow.c b/block/qcow.c index 6ea1164..5144c8d 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -1044,7 +1044,6 @@ static QemuOptsList qcow_create_opts = { static BlockDriver bdrv_qcow = { .format_name = "qcow", .instance_size = sizeof(BDRVQcowState), - .bdrv_probe = qcow_probe, .bdrv_open = qcow_open, .bdrv_close = qcow_close, .bdrv_reopen_prepare = qcow_reopen_prepare, diff --git a/include/block/probe.h b/include/block/probe.h index 090e0ae..e670341 100644 --- a/include/block/probe.h +++ b/include/block/probe.h @@ -1,7 +1,6 @@ #ifndef PROBE_H #define PROBE_H -int qcow_probe(const uint8_t *buf, int buf_size, const char *filename); int qcow2_probe(const uint8_t *buf, int buf_size, const char *filename); int bdrv_qed_probe(const uint8_t *buf, int buf_size, const char *filename); int raw_probe(const uint8_t *buf, int buf_size, const char *filename); @@ -19,5 +18,7 @@ const char *bdrv_dmg_probe(const uint8_t *buf, int buf_size, const char *filename, int *score); const char *bdrv_parallels_probe(const uint8_t *buf, int buf_size, const char *filename, int *score); +const char *bdrv_qcow_probe(const uint8_t *buf, int buf_size, + const char *filename, int *score); #endif