static int64_t coroutine_fn vdi_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors, int *pnum) { /* TODO: Check for too large sector_num (in bdrv_is_allocated or here). */ BDRVVdiState *s = (BDRVVdiState *)bs->opaque; size_t bmap_index = sector_num / s->block_sectors; size_t sector_in_block = sector_num % s->block_sectors; int n_sectors = s->block_sectors - sector_in_block; uint32_t bmap_entry = le32_to_cpu(s->bmap[bmap_index]); uint64_t offset; int result; logout("%p, %" PRId64 ", %d, %p\n", bs, sector_num, nb_sectors, pnum); if (n_sectors > nb_sectors) { n_sectors = nb_sectors; } *pnum = n_sectors; result = VDI_IS_ALLOCATED(bmap_entry); if (!result) { return 0; } offset = s->header.offset_data + (uint64_t)bmap_entry * s->block_size + sector_in_block * SECTOR_SIZE; return BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | offset; }