From patchwork Mon Jun 1 13:48:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 281553 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 980E3C433E0 for ; Mon, 1 Jun 2020 13:54:16 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2AC6B2074B for ; Mon, 1 Jun 2020 13:54:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2AC6B2074B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:37260 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jfktL-00033D-7w for qemu-devel@archiver.kernel.org; Mon, 01 Jun 2020 09:54:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33144) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfkne-0003od-8L; Mon, 01 Jun 2020 09:48:22 -0400 Received: from relay.sw.ru ([185.231.240.75]:38772 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfknc-0001k9-1H; Mon, 01 Jun 2020 09:48:21 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jfknN-0005dY-KW; Mon, 01 Jun 2020 16:48:05 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v3 1/6] iotests: Add extension names to qcow2.py dump Date: Mon, 1 Jun 2020 16:48:08 +0300 Message-Id: <1591019293-211155-2-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591019293-211155-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591019293-211155-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/01 09:48:16 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Header extension: Feature table magic 0x6803f857 length 192 data The change incurs modification of the output in 031, 036 and 061 test cases. Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/031.out | 22 +++++++++++----------- tests/qemu-iotests/036.out | 4 ++-- tests/qemu-iotests/061.out | 18 +++++++++--------- tests/qemu-iotests/qcow2.py | 23 ++++++++++++++++++++--- 4 files changed, 42 insertions(+), 25 deletions(-) diff --git a/tests/qemu-iotests/031.out b/tests/qemu-iotests/031.out index 5a4beda..966c8d9 100644 --- a/tests/qemu-iotests/031.out +++ b/tests/qemu-iotests/031.out @@ -24,7 +24,7 @@ autoclear_features [] refcount_order 4 header_length 72 -Header extension: +Header extension: Unknown magic 0x12345678 length 31 data 'This is a test header extension' @@ -52,7 +52,7 @@ autoclear_features [] refcount_order 4 header_length 72 -Header extension: +Header extension: Unknown magic 0x12345678 length 31 data 'This is a test header extension' @@ -80,12 +80,12 @@ autoclear_features [] refcount_order 4 header_length 72 -Header extension: +Header extension: Backing format magic 0xe2792aca length 11 data 'host_device' -Header extension: +Header extension: Unknown magic 0x12345678 length 31 data 'This is a test header extension' @@ -115,12 +115,12 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data -Header extension: +Header extension: Unknown magic 0x12345678 length 31 data 'This is a test header extension' @@ -148,12 +148,12 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data -Header extension: +Header extension: Unknown magic 0x12345678 length 31 data 'This is a test header extension' @@ -181,17 +181,17 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Backing format magic 0xe2792aca length 11 data 'host_device' -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data -Header extension: +Header extension: Unknown magic 0x12345678 length 31 data 'This is a test header extension' diff --git a/tests/qemu-iotests/036.out b/tests/qemu-iotests/036.out index e409acf..81a7366 100644 --- a/tests/qemu-iotests/036.out +++ b/tests/qemu-iotests/036.out @@ -24,7 +24,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 incompatible_features [] compatible_features [] autoclear_features [63] -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -36,7 +36,7 @@ No errors were found on the image. incompatible_features [] compatible_features [] autoclear_features [] -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data diff --git a/tests/qemu-iotests/061.out b/tests/qemu-iotests/061.out index a51ad1b..7821b7f 100644 --- a/tests/qemu-iotests/061.out +++ b/tests/qemu-iotests/061.out @@ -24,7 +24,7 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -82,7 +82,7 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -138,7 +138,7 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -193,7 +193,7 @@ autoclear_features [42] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -262,7 +262,7 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -324,7 +324,7 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -353,7 +353,7 @@ autoclear_features [] refcount_order 4 header_length 112 -Header extension: +Header extension: Feature table magic 0x6803f857 length 336 data @@ -491,7 +491,7 @@ wrote 65536/65536 bytes at offset 2147483648 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 65536/65536 bytes at offset 3221225472 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) - (0.00/100%) (12.50/100%) (25.00/100%) (37.50/100%) (50.00/100%) (62.50/100%) (75.00/100%) (87.50/100%) (100.00/100%) (100.00/100%) + (0.00/100%) (12.50/100%) (25.00/100%) (37.50/100%) (50.00/100%) (62.50/100%) (75.00/100%) (87.50/100%) (100.00/100%) (100.00/100%) No errors were found on the image. === Testing progress report with snapshot === @@ -506,7 +506,7 @@ wrote 65536/65536 bytes at offset 2147483648 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 65536/65536 bytes at offset 3221225472 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) - (0.00/100%) (6.25/100%) (12.50/100%) (18.75/100%) (25.00/100%) (31.25/100%) (37.50/100%) (43.75/100%) (50.00/100%) (56.25/100%) (62.50/100%) (68.75/100%) (75.00/100%) (81.25/100%) (87.50/100%) (93.75/100%) (100.00/100%) (100.00/100%) + (0.00/100%) (6.25/100%) (12.50/100%) (18.75/100%) (25.00/100%) (31.25/100%) (37.50/100%) (43.75/100%) (50.00/100%) (56.25/100%) (62.50/100%) (68.75/100%) (75.00/100%) (81.25/100%) (87.50/100%) (93.75/100%) (100.00/100%) (100.00/100%) No errors were found on the image. === Testing version downgrade with external data file === diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py index 94a07b2..e824b09 100755 --- a/tests/qemu-iotests/qcow2.py +++ b/tests/qemu-iotests/qcow2.py @@ -6,19 +6,36 @@ import string class QcowHeaderExtension: + QCOW2_EXT_MAGIC_BACKING_FORMAT = 0xE2792ACA + QCOW2_EXT_MAGIC_FEATURE_TABLE = 0x6803f857 + QCOW2_EXT_MAGIC_CRYPTO_HEADER = 0x0537be77 + QCOW2_EXT_MAGIC_BITMAPS = 0x23852875 + QCOW2_EXT_MAGIC_DATA_FILE = 0x44415441 + def __init__(self, magic, length, data): if length % 8 != 0: padding = 8 - (length % 8) data += b"\0" * padding - self.magic = magic + self.magic = magic self.length = length - self.data = data + self.data = data + self.name = self.extension_name(magic) @classmethod def create(cls, magic, data): return QcowHeaderExtension(magic, len(data), data) + def extension_name(self, magic): + return { + self.QCOW2_EXT_MAGIC_BACKING_FORMAT: 'Backing format', + self.QCOW2_EXT_MAGIC_FEATURE_TABLE: 'Feature table', + self.QCOW2_EXT_MAGIC_CRYPTO_HEADER: 'Crypto header', + self.QCOW2_EXT_MAGIC_BITMAPS: 'Bitmaps', + self.QCOW2_EXT_MAGIC_DATA_FILE: 'Data file', + }.get(magic, 'Unknown') + + class QcowHeader: uint32_t = 'I' @@ -151,7 +168,7 @@ class QcowHeader: else: data = "" - print("Header extension:") + print("%-25s %s" % ("Header extension:", ex.name)) print("%-25s %#x" % ("magic", ex.magic)) print("%-25s %d" % ("length", ex.length)) print("%-25s %s" % ("data", data)) From patchwork Mon Jun 1 13:48:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 281556 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9599BC433E0 for ; Mon, 1 Jun 2020 13:49:13 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6820C2068D for ; Mon, 1 Jun 2020 13:49:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6820C2068D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49180 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jfkoS-0004oO-MQ for qemu-devel@archiver.kernel.org; Mon, 01 Jun 2020 09:49:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33140) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfknd-0003oP-St; Mon, 01 Jun 2020 09:48:21 -0400 Received: from relay.sw.ru ([185.231.240.75]:38780 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfknc-0001k8-4a; Mon, 01 Jun 2020 09:48:21 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jfknN-0005dY-Lf; Mon, 01 Jun 2020 16:48:05 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v3 2/6] iotests: move check for printable data to QcowHeaderExtension class Date: Mon, 1 Jun 2020 16:48:09 +0300 Message-Id: <1591019293-211155-3-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591019293-211155-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591019293-211155-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/01 09:48:16 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Let us differ binary data type from string one for the extension data variable and keep the string as the QcowHeaderExtension class member in the script qcow2.py. Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/qcow2.py | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py index e824b09..18e4923 100755 --- a/tests/qemu-iotests/qcow2.py +++ b/tests/qemu-iotests/qcow2.py @@ -13,6 +13,12 @@ class QcowHeaderExtension: QCOW2_EXT_MAGIC_DATA_FILE = 0x44415441 def __init__(self, magic, length, data): + data_str = data[:length] + if all(c in string.printable.encode('ascii') for c in data_str): + data_str = "'%s'" % data_str.decode('ascii') + else: + data_str = "" + if length % 8 != 0: padding = 8 - (length % 8) data += b"\0" * padding @@ -21,6 +27,7 @@ class QcowHeaderExtension: self.length = length self.data = data self.name = self.extension_name(magic) + self.data_str = data_str @classmethod def create(cls, magic, data): @@ -162,16 +169,10 @@ class QcowHeader: def dump_extensions(self): for ex in self.extensions: - data = ex.data[:ex.length] - if all(c in string.printable.encode('ascii') for c in data): - data = "'%s'" % data.decode('ascii') - else: - data = "" - print("%-25s %s" % ("Header extension:", ex.name)) print("%-25s %#x" % ("magic", ex.magic)) print("%-25s %d" % ("length", ex.length)) - print("%-25s %s" % ("data", data)) + print("%-25s %s" % ("data", ex.data_str)) print("") From patchwork Mon Jun 1 13:48:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 281555 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AC1AC433DF for ; Mon, 1 Jun 2020 13:50:40 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0DB752074B for ; Mon, 1 Jun 2020 13:50:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0DB752074B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53446 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jfkpr-0006Y6-BC for qemu-devel@archiver.kernel.org; Mon, 01 Jun 2020 09:50:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33142) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfknd-0003oQ-UC; Mon, 01 Jun 2020 09:48:21 -0400 Received: from relay.sw.ru ([185.231.240.75]:38778 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfknc-0001k5-5H; Mon, 01 Jun 2020 09:48:21 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jfknN-0005dY-Mq; Mon, 01 Jun 2020 16:48:05 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v3 3/6] iotests: dump bitmap extension data with qcow2.py Date: Mon, 1 Jun 2020 16:48:10 +0300 Message-Id: <1591019293-211155-4-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591019293-211155-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591019293-211155-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/01 09:48:16 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add bitmap header extension data, if any, to the dump in qcow2.py. Header extension: Bitmaps magic 0x23852875 length 24 nb_bitmaps 2 reserved32 0 bitmap_directory_size 0x40 bitmap_directory_offset 0x100000 Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/qcow2.py | 42 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py index 18e4923..8286115 100755 --- a/tests/qemu-iotests/qcow2.py +++ b/tests/qemu-iotests/qcow2.py @@ -4,6 +4,39 @@ import sys import struct import string + +class Qcow2BitmapExt: + + uint32_t = 'I' + uint64_t = 'Q' + + fields = [ + [uint32_t, '%d', 'nb_bitmaps'], + [uint32_t, '%d', 'reserved32'], + [uint64_t, '%#x', 'bitmap_directory_size'], + [uint64_t, '%#x', 'bitmap_directory_offset'] + ] + + fmt = '>' + ''.join(field[0] for field in fields) + + def __init__(self, data): + + extension = struct.unpack(Qcow2BitmapExt.fmt, data) + self.__dict__ = dict((field[2], extension[i]) + for i, field in enumerate(Qcow2BitmapExt.fields)) + + def dump_bitmap_ext(self): + for f in Qcow2BitmapExt.fields: + value = self.__dict__[f[2]] + value_str = f[1] % value + + print("%-25s" % f[2], value_str) + print("") + + def dump_ext(self): + self.dump_bitmap_ext() + + class QcowHeaderExtension: QCOW2_EXT_MAGIC_BACKING_FORMAT = 0xE2792ACA @@ -13,12 +46,16 @@ class QcowHeaderExtension: QCOW2_EXT_MAGIC_DATA_FILE = 0x44415441 def __init__(self, magic, length, data): + self.obj = None data_str = data[:length] if all(c in string.printable.encode('ascii') for c in data_str): data_str = "'%s'" % data_str.decode('ascii') else: data_str = "" + if magic == self.QCOW2_EXT_MAGIC_BITMAPS: + self.obj = Qcow2BitmapExt(data) + if length % 8 != 0: padding = 8 - (length % 8) data += b"\0" * padding @@ -172,7 +209,10 @@ class QcowHeader: print("%-25s %s" % ("Header extension:", ex.name)) print("%-25s %#x" % ("magic", ex.magic)) print("%-25s %d" % ("length", ex.length)) - print("%-25s %s" % ("data", ex.data_str)) + if ex.obj is not None: + ex.obj.dump_ext() + else: + print("%-25s %s" % ("data", ex.data_str)) print("")