static int count_contiguous_clusters(int nb_clusters, int cluster_size, uint64_t *l2_table, uint64_t stop_flags) { int i; uint64_t mask = stop_flags | L2E_OFFSET_MASK | QCOW_OFLAG_COMPRESSED; uint64_t first_entry = be64_to_cpu(l2_table[0]); uint64_t offset = first_entry & mask; if (!offset) return 0; assert(qcow2_get_cluster_type(first_entry) != QCOW2_CLUSTER_COMPRESSED); for (i = 0; i < nb_clusters; i++) { uint64_t l2_entry = be64_to_cpu(l2_table[i]) & mask; if (offset + (uint64_t) i * cluster_size != l2_entry) { break; } } return i; }