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Fix 32-bit overflow in parallels image support 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
David Woodhouse 2009-11-07 14:10:01 +00:00 committed by Anthony Liguori
parent 812151f290
commit c34d2451ed
1 changed files with 3 additions and 2 deletions
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5
block/parallels.c
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@ -119,7 +119,8 @@ fail:
static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num) static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
{ {
BDRVParallelsState *s = bs->opaque; BDRVParallelsState *s = bs->opaque;
uint32_t index, offset, position; uint32_t index, offset;
uint64_t position;
index = sector_num / s->tracks; index = sector_num / s->tracks;
offset = sector_num % s->tracks; offset = sector_num % s->tracks;
@ -128,7 +129,7 @@ static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
if ((index > s->catalog_size) || (s->catalog_bitmap[index] == 0)) if ((index > s->catalog_size) || (s->catalog_bitmap[index] == 0))
return -1; return -1;
position = (s->catalog_bitmap[index] + offset) * 512; position = (uint64_t)(s->catalog_bitmap[index] + offset) * 512;
// fprintf(stderr, "sector: %llx index=%x offset=%x pointer=%x position=%x\n", // fprintf(stderr, "sector: %llx index=%x offset=%x pointer=%x position=%x\n",
// sector_num, index, offset, s->catalog_bitmap[index], position); // sector_num, index, offset, s->catalog_bitmap[index], position);