fastboot: sparse: fix sparse blocks calculation

It may overflow in sparse_block_size_to_storage, use uint64_t instead in the calculation. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>

fastboot: sparse: fix sparse blocks calculation
It may overflow in sparse_block_size_to_storage, use uint64_t instead in the calculation. Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Jeffy Chen · Tom Rini
1 parent 9dbdc6ebd4
Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff
common/image-sparse.c
@@ -64,7 +64,8 @@
 						 sparse_storage_t *storage,
 						 sparse_header_t *sparse)
 {
-	return size * sparse->blk_sz / storage->block_sz;
+	return (unsigned int)lldiv((uint64_t)size * sparse->blk_sz,
+				   storage->block_sz);
 }
  
 static bool sparse_chunk_has_buffer(chunk_header_t *chunk)
...	...	@@ -64,7 +64,8 @@
64	64	sparse_storage_t *storage,
65	65	sparse_header_t *sparse)
66	66	{
67		- return size * sparse->blk_sz / storage->block_sz;
	67	+ return (unsigned int)lldiv((uint64_t)size * sparse->blk_sz,
	68	+ storage->block_sz);
68	69	}
69	70
70	71	static bool sparse_chunk_has_buffer(chunk_header_t *chunk)