diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/vmdk.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index 45f9d3c5b9..f1e01f9731 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1259,15 +1259,26 @@ static VmdkExtent *find_extent(BDRVVmdkState *s, return NULL; } +static inline uint64_t vmdk_find_offset_in_cluster(VmdkExtent *extent, + int64_t offset) +{ + uint64_t offset_in_cluster, extent_begin_offset, extent_relative_offset; + uint64_t cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE; + + extent_begin_offset = + (extent->end_sector - extent->sectors) * BDRV_SECTOR_SIZE; + extent_relative_offset = offset - extent_begin_offset; + offset_in_cluster = extent_relative_offset % cluster_size; + + return offset_in_cluster; +} + static inline uint64_t vmdk_find_index_in_cluster(VmdkExtent *extent, int64_t sector_num) { - uint64_t index_in_cluster, extent_begin_sector, extent_relative_sector_num; - - extent_begin_sector = extent->end_sector - extent->sectors; - extent_relative_sector_num = sector_num - extent_begin_sector; - index_in_cluster = extent_relative_sector_num % extent->cluster_sectors; - return index_in_cluster; + uint64_t offset; + offset = vmdk_find_offset_in_cluster(extent, sector_num * BDRV_SECTOR_SIZE); + return offset / BDRV_SECTOR_SIZE; } static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, |