Method reconstructFile

ffsengine.cpp:3713–3901

}

UINT8 FfsEngine::reconstructFile(const QModelIndex& index, const UINT8 revision, const UINT8 erasePolarity, const UINT32 base, QByteArray& reconstructed)
{
    if (!index.isValid())
        return ERR_SUCCESS;

    UINT8 result;

    // No action
    if (model->action(index) == Actions::NoAction || model->action(index) == Actions::DoNotRebuild) {
        reconstructed = model->header(index).append(model->body(index));
        const EFI_FFS_FILE_HEADER* fileHeader = (const EFI_FFS_FILE_HEADER*)model->header(index).constData();
        // Append tail, if needed
        if (fileHeader->Attributes & FFS_ATTRIB_TAIL_PRESENT) {
            UINT8 ht = ~fileHeader->IntegrityCheck.Checksum.Header;
            UINT8 ft = ~fileHeader->IntegrityCheck.Checksum.File;
            reconstructed.append(ht).append(ft);
        }
        return ERR_SUCCESS;
    }
    else if (model->action(index) == Actions::Remove) {
        reconstructed.clear();
        return ERR_SUCCESS;
    }
    else if (model->action(index) == Actions::Insert ||
        model->action(index) == Actions::Replace ||
        model->action(index) == Actions::Rebuild) {
        QByteArray header = model->header(index);
        EFI_FFS_FILE_HEADER* fileHeader = (EFI_FFS_FILE_HEADER*)header.data();
		
        // Check erase polarity
        if (erasePolarity == ERASE_POLARITY_UNKNOWN) {
            msg(tr("reconstructFile: unknown erase polarity"), index);
            return ERR_INVALID_PARAMETER;
        }

        // Check file state
        // Check top reserved bit of file state to determine it's original erase polarity
        UINT8 state = fileHeader->State;
        if (state & EFI_FILE_ERASE_POLARITY)
            state = ~state;

        // Order of this checks must be preserved
        // Check file to have valid state, or delete it otherwise
        if (state & EFI_FILE_HEADER_INVALID) {
            // File marked to have invalid header and must be deleted
            // Do not add anything to queue
            msg(tr("reconstructFile: file is HEADER_INVALID state, and will be removed from reconstructed image"), index);
            return ERR_SUCCESS;
        }
        else if (state & EFI_FILE_DELETED) {
            // File marked to have been deleted form and must be deleted
            // Do not add anything to queue
            msg(tr("reconstructFile: file is in DELETED state, and will be removed from reconstructed image"), index);
            return ERR_SUCCESS;
        }
        else if (state & EFI_FILE_MARKED_FOR_UPDATE) {
            // File is marked for update, the mark must be removed
            msg(tr("reconstructFile: file's MARKED_FOR_UPDATE state cleared"), index);