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vmdk: Fix big flat extent IO

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Local variable "n" as int64_t avoids overflow with large sector number
calculation. See test case change for failure case.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Fam Zheng 2014-01-08 09:42:07 +08:00 • committed by Kevin Wolf
parent 7fa9e1f941
commit 585ea0c841
3 changed files with 83 additions and 2 deletions
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4
block/vmdk.c
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@ -1325,8 +1325,8 @@ static int vmdk_write(BlockDriverState *bs, int64_t sector_num,
{
BDRVVmdkState *s = bs->opaque;
VmdkExtent *extent = NULL;
int n, ret;
int64_t index_in_cluster;
int ret;
int64_t index_in_cluster, n;
uint64_t extent_begin_sector, extent_relative_sector_num;
uint64_t cluster_offset;
VmdkMetaData m_data;