Function clone_file

launcher/FileSystem.cpp:1343–1389

* @brief clone/reflink file from src to dst * */

 *
 */
bool clone_file(const QString& src, const QString& dst, std::error_code& ec)
{
    auto src_path = StringUtils::toStdString(QDir::toNativeSeparators(QFileInfo(src).absoluteFilePath()));
    auto dst_path = StringUtils::toStdString(QDir::toNativeSeparators(QFileInfo(dst).absoluteFilePath()));

    FilesystemInfo srcinfo = statFS(src);
    FilesystemInfo dstinfo = statFS(dst);

    if ((srcinfo.rootPath != dstinfo.rootPath) || (srcinfo.fsType != dstinfo.fsType)) {
        ec = std::make_error_code(std::errc::not_supported);
        qWarning() << "reflink/clone must be to the same device and filesystem! src and dst root filesystems do not match.";
        return false;
    }

#if defined(Q_OS_WIN)

    if (!win_ioctl_clone(src_path, dst_path, ec)) {
        qDebug() << "failed win_ioctl_clone";
        qWarning() << "clone/reflink not supported on windows outside of btrfs or ReFS!";
        qWarning() << "check out https://github.com/maharmstone/btrfs for btrfs support!";
        return false;
    }

#elif defined(Q_OS_LINUX)

    if (!linux_ficlone(src_path, dst_path, ec)) {
        qDebug() << "failed linux_ficlone:";
        return false;
    }

#elif defined(Q_OS_MACOS)

    if (!macos_bsd_clonefile(src_path, dst_path, ec)) {
        qDebug() << "failed macos_bsd_clonefile:";
        return false;
    }

#else

    qWarning() << "clone/reflink not supported! unknown OS";
    ec = std::make_error_code(std::errc::not_supported);
    return false;

#endif

    return true;
}

#if defined(Q_OS_WIN)