static int parallels_create(const char *filename, QemuOpts *opts, Error **errp) { int64_t total_size, cl_size; uint8_t tmp[BDRV_SECTOR_SIZE]; Error *local_err = NULL; BlockDriverState *file; uint32_t cat_entries, cat_sectors; ParallelsHeader header; int ret; total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), BDRV_SECTOR_SIZE); cl_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_CLUSTER_SIZE, DEFAULT_CLUSTER_SIZE), BDRV_SECTOR_SIZE); ret = bdrv_create_file(filename, opts, &local_err); if (ret < 0) { error_propagate(errp, local_err); return ret; } file = NULL; ret = bdrv_open(&file, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err); if (ret < 0) { error_propagate(errp, local_err); return ret; } ret = bdrv_truncate(file, 0); if (ret < 0) { goto exit; } cat_entries = DIV_ROUND_UP(total_size, cl_size); cat_sectors = DIV_ROUND_UP(cat_entries * sizeof(uint32_t) + sizeof(ParallelsHeader), cl_size); cat_sectors = (cat_sectors * cl_size) >> BDRV_SECTOR_BITS; memset(&header, 0, sizeof(header)); memcpy(header.magic, HEADER_MAGIC2, sizeof(header.magic)); header.version = cpu_to_le32(HEADER_VERSION); /* don't care much about geometry, it is not used on image level */ header.heads = cpu_to_le32(16); header.cylinders = cpu_to_le32(total_size / BDRV_SECTOR_SIZE / 16 / 32); header.tracks = cpu_to_le32(cl_size >> BDRV_SECTOR_BITS); header.catalog_entries = cpu_to_le32(cat_entries); header.nb_sectors = cpu_to_le64(DIV_ROUND_UP(total_size, BDRV_SECTOR_SIZE)); header.data_off = cpu_to_le32(cat_sectors); /* write all the data */ memset(tmp, 0, sizeof(tmp)); memcpy(tmp, &header, sizeof(header)); ret = bdrv_pwrite(file, 0, tmp, BDRV_SECTOR_SIZE); if (ret < 0) { goto exit; } ret = bdrv_write_zeroes(file, 1, cat_sectors - 1, 0); if (ret < 0) { goto exit; } ret = 0; done: bdrv_unref(file); return ret; exit: error_setg_errno(errp, -ret, "Failed to create Parallels image"); goto done; }