Merge "fastbootd: Remove metadata merging code." am: 43cb5db9

    return FlashBlockDevice(handle.fd(), data);

}

bool UpdateSuper(FastbootDevice* device, const std::string& partition_name, bool wipe) {

    std::optional<std::string> super = FindPhysicalPartition(partition_name);

    if (!super) {

        return device->WriteFail("Could not find partition: " + partition_name);

    }

bool UpdateSuper(FastbootDevice* device, const std::string& super_name, bool wipe) {

    std::vector<char> data = std::move(device->download_data());

    if (data.empty()) {

        return device->WriteFail("No data available");

    // image.

    std::string slot_suffix = device->GetCurrentSlot();

    uint32_t slot_number = SlotNumberForSlotSuffix(slot_suffix);

    std::unique_ptr<LpMetadata> metadata = ReadMetadata(super->c_str(), slot_number);

    if (!metadata || wipe) {

        if (!FlashPartitionTable(super.value(), *new_metadata.get())) {

    if (wipe || !ReadMetadata(super_name, slot_number)) {

        if (!FlashPartitionTable(super_name, *new_metadata.get())) {

            return device->WriteFail("Unable to flash new partition table");

        }

        return device->WriteOkay("Successfully flashed partition table");

    }

    // There's a working super partition, and we don't want to wipe it - it may

    // may contain partitions created for the user. Instead, we create a zero-

    // sized partition for each entry in the new partition table. It is then

    // the host's responsibility to size it correctly via resize-logical-partition.

    std::unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(*metadata.get());

    if (!builder) {

        return device->WriteFail("Unable to create a metadata builder");

    }

    for (const auto& partition : new_metadata->partitions) {

        std::string name = GetPartitionName(partition);

        if (builder->FindPartition(name)) {

            continue;

        }

        if (!builder->AddPartition(name, partition.attributes)) {

            return device->WriteFail("Unable to add partition: " + name);

        }

    }

    // The scratch partition may exist as temporary storage, created for

    // use by adb remount for overlayfs. If we're performing a flashall

    // operation then we want to start over with a clean slate, so we

    // remove the scratch partition until it is requested again.

    builder->RemovePartition("scratch");

    new_metadata = builder->Export();

    if (!new_metadata) {

        return device->WriteFail("Unable to export new partition table");

    }

    // Write the new table to every metadata slot.

    bool ok = true;

    for (size_t i = 0; i < new_metadata->geometry.metadata_slot_count; i++) {

        ok &= UpdatePartitionTable(super.value(), *new_metadata.get(), i);

        ok &= UpdatePartitionTable(super_name, *new_metadata.get(), i);

    }

    if (!ok) {

class FastbootDevice;

int Flash(FastbootDevice* device, const std::string& partition_name);

bool UpdateSuper(FastbootDevice* device, const std::string& partition_name, bool wipe);

bool UpdateSuper(FastbootDevice* device, const std::string& super_name, bool wipe);