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From 340c0aaeb771bc3c4b2347e4bcace7afe846907f Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Sat, 13 Jun 2015 16:22:29 +0200
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Subject: [PATCH 35/42] qcow2.py: Add required padding for header extensions
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Message-id: <1434212556-3927-36-git-send-email-mreitz@redhat.com>
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Patchwork-id: 66054
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O-Subject: [RHEL-7.2 qemu-kvm PATCH 35/42] qcow2.py: Add required padding for header extensions
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Bugzilla: 1129893
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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From: Kevin Wolf <kwolf@redhat.com>
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BZ: 1129893
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The qcow2 specification requires that the header extension data be
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padded to round up the extension size to the next multiple of 8 bytes.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Max Reitz <mreitz@redhat.com>
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Message-id: 1416935562-7760-3-git-send-email-kwolf@redhat.com
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 8884dd1bbc5ce42cd657ffcbef3a477443468974)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tests/qemu-iotests/qcow2.py | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py
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index 44a2b45..0e343ef 100755
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--- a/tests/qemu-iotests/qcow2.py
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+++ b/tests/qemu-iotests/qcow2.py
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@@ -7,6 +7,10 @@ import string
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class QcowHeaderExtension:
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def __init__(self, magic, length, data):
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+ if length % 8 != 0:
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+ padding = 8 - (length % 8)
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+ data += "\0" * padding
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+
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self.magic = magic
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self.length = length
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self.data = data
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--
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1.8.3.1
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