From add89f969fc86f3b3223c4283ee49fcb507b8f81 Mon Sep 17 00:00:00 2001 From: Zhang Shengju Date: Tue, 13 Mar 2012 22:38:13 +0800 Subject: [PATCH] block/vpc: write checksum back to footer after check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Kevin Wolf (cherry picked from commit c088b691363070d151f80cc1fde4b7c151bdfe8f) Signed-off-by: Andreas Färber --- block/vpc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/vpc.c b/block/vpc.c index ac33e15..55201e2 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -170,6 +170,9 @@ 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) -- 1.7.11.2