From patchwork Thu Jul 14 19:03:11 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: 648557 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 3rr5H937yxz9sDG for ; Fri, 15 Jul 2016 05:24:21 +1000 (AEST) Received: from localhost ([::1]:56383 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNmF9-00032T-56 for incoming@patchwork.ozlabs.org; Thu, 14 Jul 2016 15:24:19 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60453) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNlvJ-0003zb-RA for qemu-devel@nongnu.org; Thu, 14 Jul 2016 15:03:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bNlvH-0002jm-J2 for qemu-devel@nongnu.org; Thu, 14 Jul 2016 15:03:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46820) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNlvC-0002g5-5y; Thu, 14 Jul 2016 15:03:42 -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 C388B7F40B; Thu, 14 Jul 2016 19:03:41 +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 u6EJ3T8c000405; Thu, 14 Jul 2016 15:03:41 -0400 From: Colin Lord To: qemu-devel@nongnu.org Date: Thu, 14 Jul 2016 15:03:11 -0400 Message-Id: <1468523008-30013-16-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 19:03:41 +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 15/32] blockdev: Move vmdk probe to its own file 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" Isolates vmdk probe as part of the modularization process. Signed-off-by: Colin Lord Reviewed-by: Max Reitz --- block/Makefile.objs | 2 +- block/vmdk-probe.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ block/vmdk.c | 60 ++------------------------------------------------- block/vmdk.h | 7 ++++++ include/block/probe.h | 1 + 5 files changed, 71 insertions(+), 59 deletions(-) create mode 100644 block/vmdk-probe.c create mode 100644 block/vmdk.h diff --git a/block/Makefile.objs b/block/Makefile.objs index 4363667..f86ab63 100644 --- a/block/Makefile.objs +++ b/block/Makefile.objs @@ -26,7 +26,7 @@ block-obj-y += write-threshold.o block-obj-y += crypto.o block-obj-y += bochs-probe.o cloop-probe.o crypto-probe.o dmg-probe.o block-obj-y += parallels-probe.o qcow-probe.o qcow2-probe.o qed-probe.o -block-obj-y += raw-probe.o vdi-probe.o vhdx-probe.o +block-obj-y += raw-probe.o vdi-probe.o vhdx-probe.o vmdk-probe.o common-obj-y += stream.o common-obj-y += backup.o diff --git a/block/vmdk-probe.c b/block/vmdk-probe.c new file mode 100644 index 0000000..77b06af --- /dev/null +++ b/block/vmdk-probe.c @@ -0,0 +1,60 @@ +#include "qemu/osdep.h" +#include "block/block_int.h" +#include "block/probe.h" +#include "vmdk.h" + +int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) +{ + uint32_t magic; + + if (buf_size < 4) { + return 0; + } + magic = be32_to_cpu(*(uint32_t *)buf); + if (magic == VMDK3_MAGIC || + magic == VMDK4_MAGIC) { + return 100; + } else { + const char *p = (const char *)buf; + const char *end = p + buf_size; + while (p < end) { + if (*p == '#') { + /* skip comment line */ + while (p < end && *p != '\n') { + p++; + } + p++; + continue; + } + if (*p == ' ') { + while (p < end && *p == ' ') { + p++; + } + /* skip '\r' if windows line endings used. */ + if (p < end && *p == '\r') { + p++; + } + /* only accept blank lines before 'version=' line */ + if (p == end || *p != '\n') { + return 0; + } + p++; + continue; + } + if (end - p >= strlen("version=X\n")) { + if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || + strncmp("version=2\n", p, strlen("version=2\n")) == 0) { + return 100; + } + } + if (end - p >= strlen("version=X\r\n")) { + if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || + strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { + return 100; + } + } + return 0; + } + return 0; + } +} diff --git a/block/vmdk.c b/block/vmdk.c index d73f431..d2699b0 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -26,6 +26,8 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "block/block_int.h" +#include "block/probe.h" +#include "vmdk.h" #include "sysemu/block-backend.h" #include "qapi/qmp/qerror.h" #include "qemu/error-report.h" @@ -35,8 +37,6 @@ #include "qemu/cutils.h" #include -#define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') -#define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') #define VMDK4_COMPRESSION_DEFLATE 1 #define VMDK4_FLAG_NL_DETECT (1 << 0) #define VMDK4_FLAG_RGD (1 << 1) @@ -151,62 +151,6 @@ enum { MARKER_FOOTER = 3, }; -static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) -{ - uint32_t magic; - - if (buf_size < 4) { - return 0; - } - magic = be32_to_cpu(*(uint32_t *)buf); - if (magic == VMDK3_MAGIC || - magic == VMDK4_MAGIC) { - return 100; - } else { - const char *p = (const char *)buf; - const char *end = p + buf_size; - while (p < end) { - if (*p == '#') { - /* skip comment line */ - while (p < end && *p != '\n') { - p++; - } - p++; - continue; - } - if (*p == ' ') { - while (p < end && *p == ' ') { - p++; - } - /* skip '\r' if windows line endings used. */ - if (p < end && *p == '\r') { - p++; - } - /* only accept blank lines before 'version=' line */ - if (p == end || *p != '\n') { - return 0; - } - p++; - continue; - } - if (end - p >= strlen("version=X\n")) { - if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || - strncmp("version=2\n", p, strlen("version=2\n")) == 0) { - return 100; - } - } - if (end - p >= strlen("version=X\r\n")) { - if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || - strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { - return 100; - } - } - return 0; - } - return 0; - } -} - #define SECTOR_SIZE 512 #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ #define BUF_SIZE 4096 diff --git a/block/vmdk.h b/block/vmdk.h new file mode 100644 index 0000000..d631468 --- /dev/null +++ b/block/vmdk.h @@ -0,0 +1,7 @@ +#ifndef VMDK_H +#define VMDK_H + +#define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') +#define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') + +#endif diff --git a/include/block/probe.h b/include/block/probe.h index e901d8f..392515d 100644 --- a/include/block/probe.h +++ b/include/block/probe.h @@ -13,5 +13,6 @@ 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); int vdi_probe(const uint8_t *buf, int buf_size, const char *filename); int vhdx_probe(const uint8_t *buf, int buf_size, const char *filename); +int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename); #endif