static int vhdx_create_new_metadata(BlockDriverState *bs,
                                    uint64_t image_size,
                                    uint32_t block_size,
                                    uint32_t sector_size,
                                    uint64_t metadata_offset,
                                    VHDXImageType type)
{
    int ret = 0;
    uint32_t offset = 0;
    void *buffer = NULL;
    void *entry_buffer;
    VHDXMetadataTableHeader *md_table;;
    VHDXMetadataTableEntry  *md_table_entry;

    /* Metadata entries */
    VHDXFileParameters     *mt_file_params;
    VHDXVirtualDiskSize    *mt_virtual_size;
    VHDXPage83Data         *mt_page83;
    VHDXVirtualDiskLogicalSectorSize  *mt_log_sector_size;
    VHDXVirtualDiskPhysicalSectorSize *mt_phys_sector_size;

    entry_buffer = g_malloc0(sizeof(VHDXFileParameters)               +
                             sizeof(VHDXVirtualDiskSize)              +
                             sizeof(VHDXPage83Data)                   +
                             sizeof(VHDXVirtualDiskLogicalSectorSize) +
                             sizeof(VHDXVirtualDiskPhysicalSectorSize));

    mt_file_params = entry_buffer;
    offset += sizeof(VHDXFileParameters);
    mt_virtual_size = entry_buffer + offset;
    offset += sizeof(VHDXVirtualDiskSize);
    mt_page83 = entry_buffer + offset;
    offset += sizeof(VHDXPage83Data);
    mt_log_sector_size = entry_buffer + offset;
    offset += sizeof(VHDXVirtualDiskLogicalSectorSize);
    mt_phys_sector_size = entry_buffer + offset;

    mt_file_params->block_size = cpu_to_le32(block_size);
    if (type == VHDX_TYPE_FIXED) {
        mt_file_params->data_bits |= VHDX_PARAMS_LEAVE_BLOCKS_ALLOCED;
        cpu_to_le32s(&mt_file_params->data_bits);
    }

    vhdx_guid_generate(&mt_page83->page_83_data);
    cpu_to_leguids(&mt_page83->page_83_data);
    mt_virtual_size->virtual_disk_size        = cpu_to_le64(image_size);
    mt_log_sector_size->logical_sector_size   = cpu_to_le32(sector_size);
    mt_phys_sector_size->physical_sector_size = cpu_to_le32(sector_size);

    buffer = g_malloc0(VHDX_HEADER_BLOCK_SIZE);
    md_table = buffer;

    md_table->signature   = VHDX_METADATA_SIGNATURE;
    md_table->entry_count = 5;
    vhdx_metadata_header_le_export(md_table);


    /* This will reference beyond the reserved table portion */
    offset = 64 * KiB;

    md_table_entry = buffer + sizeof(VHDXMetadataTableHeader);

    md_table_entry[0].item_id = file_param_guid;
    md_table_entry[0].offset  = offset;
    md_table_entry[0].length  = sizeof(VHDXFileParameters);
    md_table_entry[0].data_bits |= VHDX_META_FLAGS_IS_REQUIRED;
    offset += md_table_entry[0].length;
    vhdx_metadata_entry_le_export(&md_table_entry[0]);

    md_table_entry[1].item_id = virtual_size_guid;
    md_table_entry[1].offset  = offset;
    md_table_entry[1].length  = sizeof(VHDXVirtualDiskSize);
    md_table_entry[1].data_bits |= VHDX_META_FLAGS_IS_REQUIRED |
                                   VHDX_META_FLAGS_IS_VIRTUAL_DISK;
    offset += md_table_entry[1].length;
    vhdx_metadata_entry_le_export(&md_table_entry[1]);

    md_table_entry[2].item_id = page83_guid;
    md_table_entry[2].offset  = offset;
    md_table_entry[2].length  = sizeof(VHDXPage83Data);
    md_table_entry[2].data_bits |= VHDX_META_FLAGS_IS_REQUIRED |
                                   VHDX_META_FLAGS_IS_VIRTUAL_DISK;
    offset += md_table_entry[2].length;
    vhdx_metadata_entry_le_export(&md_table_entry[2]);

    md_table_entry[3].item_id = logical_sector_guid;
    md_table_entry[3].offset  = offset;
    md_table_entry[3].length  = sizeof(VHDXVirtualDiskLogicalSectorSize);
    md_table_entry[3].data_bits |= VHDX_META_FLAGS_IS_REQUIRED |
                                   VHDX_META_FLAGS_IS_VIRTUAL_DISK;
    offset += md_table_entry[3].length;
    vhdx_metadata_entry_le_export(&md_table_entry[3]);

    md_table_entry[4].item_id = phys_sector_guid;
    md_table_entry[4].offset  = offset;
    md_table_entry[4].length  = sizeof(VHDXVirtualDiskPhysicalSectorSize);
    md_table_entry[4].data_bits |= VHDX_META_FLAGS_IS_REQUIRED |
                                   VHDX_META_FLAGS_IS_VIRTUAL_DISK;
    vhdx_metadata_entry_le_export(&md_table_entry[4]);

    ret = bdrv_pwrite(bs, metadata_offset, buffer, VHDX_HEADER_BLOCK_SIZE);
    if (ret < 0) {
        goto exit;
    }

    ret = bdrv_pwrite(bs, metadata_offset + (64 * KiB), entry_buffer,
                      VHDX_HEADER_BLOCK_SIZE);
    if (ret < 0) {
        goto exit;
    }


exit:
    g_free(buffer);
    g_free(entry_buffer);
    return ret;
}
Unknown