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[Qemu-devel] [PATCH] block: write checksum back to footer after check
From: |
Zhang Shengju |
Subject: |
[Qemu-devel] [PATCH] block: write checksum back to footer after check |
Date: |
Tue, 13 Mar 2012 22:38:13 +0800 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 |
After validation check, the 'checksum' is not written back
to footer, which leave it with zero.
This results in errors while loadding it under Microsoft's
Hyper-V environment, and also errors from utilities like
Citrix's vhd-util.
Signed-off-by: Zhang Shengju <address@hidden>
---
block/vpc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/block/vpc.c b/block/vpc.c
index 6b4816f..12aecd4 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -189,6 +189,9 @@ static int vpc_open(BlockDriverState *bs, int flags)
fprintf(stderr, "block-vpc: The header checksum of '%s' is "
"incorrect.\n", bs->filename);
+ /* Write 'checksum' back to footer, or else will leave it with zero. */
+ footer->checksum = be32_to_cpu(checksum);
+
// The visible size of a image in Virtual PC depends on the geometry
// rather than on the size stored in the footer (the size in the footer
// is too large usually)
--
1.7.1
- [Qemu-devel] [PATCH] block: write checksum back to footer after check,
Zhang Shengju <=