refactor: cleanupFilesystem.cpp
* remove now redundant reflink/clone code for windows * remove unnessacery debug code that could slow things down Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>
This commit is contained in:
Rachel Powers
parent
a0e03c41c0
commit
536da704fc
@ -962,6 +962,37 @@ bool overrideFolder(QString overwritten_path, QString override_path)
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return err.value() == 0;
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}
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QString getFilesystemTypeName(FilesystemType type) {
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auto iter = s_filesystem_type_names.constFind(type);
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if (iter != s_filesystem_type_names.constEnd()){
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return iter.value();
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}
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return getFilesystemTypeName(FilesystemType::UNKNOWN);
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}
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FilesystemType getFilesystemTypeFuzzy(const QString& name)
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{
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auto iter = s_filesystem_type_names_inverse.constFind(name.toUpper());
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if (iter != s_filesystem_type_names_inverse.constEnd()){
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return iter.value();
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}
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return FilesystemType::UNKNOWN;
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}
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FilesystemType getFilesystemType(const QString& name)
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{
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for (auto fs_type_pair : s_filesystem_type_names_inverse.toStdMap()) {
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auto fs_type_name = fs_type_pair.first;
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auto fs_type = fs_type_pair.second;
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if(name.toUpper().contains(fs_type_name.toUpper())) {
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return fs_type;
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}
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}
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return FilesystemType::UNKNOWN;
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}
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/**
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* @brief path to the near ancestor that exsists
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*
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@ -994,15 +1025,7 @@ FilesystemInfo statFS(const QString& path)
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info.fsTypeName = QString::fromStdString(storage_info.fileSystemType().toStdString());
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for (auto fs_type_pair : s_filesystem_type_names_inverse.toStdMap()) {
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auto fs_type_name = fs_type_pair.first;
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auto fs_type = fs_type_pair.second;
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if(info.fsTypeName.toLower().contains(fs_type_name.toLower())) {
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info.fsType = fs_type;
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break;
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}
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}
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info.fsType = getFilesystemTypeFuzzy(info.fsTypeName);
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info.blockSize = storage_info.blockSize();
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info.bytesAvailable = storage_info.bytesAvailable();
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@ -1081,7 +1104,7 @@ bool clone::operator()(const QString& offset, bool dryRun)
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clone_file(src_path, dst_path, err);
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}
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if (err) {
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qDebug() << "Failed to clone files:" << QString::fromStdString(err.message());
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qDebug() << "Failed to clone files: error" << err.value() << "message" << QString::fromStdString(err.message());
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qDebug() << "Source file:" << src_path;
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qDebug() << "Destination file:" << dst_path;
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}
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@ -1118,104 +1141,55 @@ bool clone_file(const QString& src, const QString& dst, std::error_code& ec)
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auto src_path = StringUtils::toStdString(QDir::toNativeSeparators(QFileInfo(src).absoluteFilePath()));
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auto dst_path = StringUtils::toStdString(QDir::toNativeSeparators(QFileInfo(dst).absoluteFilePath()));
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#if defined(Q_OS_WIN)
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FilesystemInfo srcinfo = statFS(src);
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FilesystemInfo dstinfo = statFS(dst);
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if (((srcinfo.fsType == FilesystemType::BTRFS && dstinfo.fsType == FilesystemType::BTRFS) ||
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(srcinfo.fsType == FilesystemType::REFS && dstinfo.fsType == FilesystemType::REFS)) &&
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USE_IOCTL_CLONE)
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if ((srcinfo.rootPath != dstinfo.rootPath) || (srcinfo.fsType != dstinfo.fsType))
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{
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if (srcinfo.rootPath != dstinfo.rootPath) {
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qWarning() << "clones must be to the same device! src and dst root paths do not match.";
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ec = std::make_error_code(std::errc::not_supported);
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qWarning() << "reflink/clone must be to the same device and filesystem! src and dst root filesystems do not match.";
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return false;
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}
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qDebug() << "ioctl clone" << src << "to" << dst;
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if (!ioctl_clone(src_path, dst_path, ec))
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return false;
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#if defined(Q_OS_WIN)
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} else if (srcinfo.fsType == FilesystemType::BTRFS) {
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if (dstinfo.fsType != FilesystemType::BTRFS || (srcinfo.rootPath != dstinfo.rootPath)){
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qWarning() << "winbtrfs clone must be to the same device! src and dst root paths do not match.";
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if (!win_ioctl_clone(src_path, dst_path, ec)) {
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qDebug() << "failed win_ioctl_clone";
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qWarning() << "clone/reflink not supported on windows outside of btrfs or ReFS!";
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qWarning() << "check out https://github.com/maharmstone/btrfs for btrfs support!";
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ec = std::make_error_code(std::errc::not_supported);
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return false;
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}
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qDebug() << "clone/reflink of btrfs on windows! assuming winbtrfs is in use and calling shellbtrfs.dll,ReflinkCopyW";
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if (!winbtrfs_clone(src_path, dst_path, ec))
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return false;
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// There is no return value from ReflinkCopyW so we must check if the file exsists ourselves
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QFileInfo dstInfo(dst);
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if (!dstInfo.exists() || !dstInfo.isFile() || dstInfo.isSymLink()) {
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// shellbtrfs.dll,ReflinkCopyW is curently broken https://github.com/maharmstone/btrfs/issues/556
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// lets try a little workaround
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// find the misnamed file
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qDebug() << dst << "is missing. ReflinkCopyW may still be broken, trying workaround.";
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QString badDst = QDir(dstInfo.absolutePath()).path() + dstInfo.fileName();
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qDebug() << "trying" << badDst;
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QFileInfo badDstInfo(badDst);
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if (badDstInfo.exists() && badDstInfo.isFile()) {
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qDebug() << badDst << "exists! moving it to the correct location.";
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if(!move(badDstInfo.absoluteFilePath(), dstInfo.absoluteFilePath())) {
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qDebug() << "move from" << badDst << "to" << dst << "failed";
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ec = std::make_error_code(std::errc::no_such_file_or_directory);
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return false;
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}
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} else {
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// oof, clone failure?
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qDebug() << "clone/reflink on winbtrfs did not succeed: file" << dst << "does not appear to exist";
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ec = std::make_error_code(std::errc::no_such_file_or_directory);
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return false;
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}
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}
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} else if (srcinfo.fsType == FilesystemType::REFS) {
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if (dstinfo.fsType != FilesystemType::REFS || (srcinfo.rootPath != dstinfo.rootPath)){
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qWarning() << "ReFS clone must be to the same device! src and dst root paths do not match.";
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ec = std::make_error_code(std::errc::not_supported);
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return false;
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}
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qDebug() << "clone/reflink of ReFS on windows!";
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if (!refs_clone(src_path, dst_path, ec))
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return false;
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} else {
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qWarning() << "clone/reflink not supported on windows outside of winbtrfs or ReFS!";
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qWarning() << "check out https://github.com/maharmstone/btrfs for btrfs support!";
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ec = std::make_error_code(std::errc::not_supported);
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return false;
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}
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#elif defined(Q_OS_LINUX)
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if(!linux_ficlone(src_path, dst_path, ec))
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if(!linux_ficlone(src_path, dst_path, ec)) {
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qDebug() << "failed linux_ficlone:";
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return false;
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}
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#elif defined(Q_OS_MACOS) || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD)
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if(!macos_bsd_clonefile(src_path, dst_path, ec))
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if(!macos_bsd_clonefile(src_path, dst_path, ec)) {
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qDebug() << "failed macos_bsd_clonefile:";
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return false;
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}
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#else
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qWarning() << "clone/reflink not supported! unknown OS";
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ec = std::make_error_code(std::errc::not_supported);
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return false;
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#endif
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return true;
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}
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#if defined(Q_OS_WIN)
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typedef void (__stdcall *f_ReflinkCopyW)(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow);
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const long WinMaxChunkSize = 1L << 31; // 2GB
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static long RoundUpToPowerOf2(long originalValue, long roundingMultiplePowerOf2)
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{
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@ -1223,171 +1197,15 @@ static long RoundUpToPowerOf2(long originalValue, long roundingMultiplePowerOf2)
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return (originalValue + mask) & ~mask;
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}
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bool winbtrfs_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec)
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{
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// https://github.com/maharmstone/btrfs
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QString cmdLine = QString("\"%1\" \"%2\"").arg(src_path, dst_path);
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std::wstring wstr = cmdLine.toStdWString(); // temp buffer to copy the data and avoid side effect of non const cast
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LPWSTR cmdLineWin = (wchar_t*)wstr.c_str();
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// https://github.com/maharmstone/btrfs/blob/9da54911dd6f3713a1c4c7be40338a3da126f4e6/src/shellext/contextmenu.cpp#L1609
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HINSTANCE shellbtrfsDLL = LoadLibrary(L"shellbtrfs.dll");
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if (shellbtrfsDLL == NULL) {
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ec = std::make_error_code(std::errc::not_supported);
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qWarning() << "cannot locate the shellbtrfs.dll file, reflink copy not supported";
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return false;
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}
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f_ReflinkCopyW ReflinkCopyW = (f_ReflinkCopyW)GetProcAddress(shellbtrfsDLL, "ReflinkCopyW");
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if (!ReflinkCopyW) {
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ec = std::make_error_code(std::errc::not_supported);
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qWarning() << "cannot locate the ReflinkCopyW function from shellbtrfs.dll, reflink copy not supported";
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return false;
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}
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qDebug() << "Calling ReflinkCopyW from shellbtrfs.dll with:" << cmdLine;
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ReflinkCopyW(0, 0, cmdLineWin, 1);
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FreeLibrary(shellbtrfsDLL);
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return true;
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}
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bool refs_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec)
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{
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#if defined(FSCTL_DUPLICATE_EXTENTS_TO_FILE)
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//https://learn.microsoft.com/en-us/windows/win32/api/winioctl/ni-winioctl-fsctl_duplicate_extents_to_file
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//https://github.com/microsoft/CopyOnWrite/blob/main/lib/Windows/WindowsCopyOnWriteFilesystem.cs#L94
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QString qSourcePath = StringUtils::fromStdString(src_path);
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QString sourceVolumePath = statFS(qSourcePath).rootPath;
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std::wstring source_volume_path = StringUtils::toStdString(sourceVolumePath);
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unsigned long sectorsPerCluster;
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unsigned long bytesPerSector;
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unsigned long numberOfFreeClusters;
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unsigned long totalNumberOfClusters;
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if(!GetDiskFreeSpace(source_volume_path.c_str(), §orsPerCluster, &bytesPerSector, &numberOfFreeClusters, &totalNumberOfClusters )){
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ec = std::error_code(GetLastError(), std::system_category());
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qDebug() << "Failed to get disk info for source volume" << sourceVolumePath;
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return false;
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}
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long srcClusterSize = (long)(sectorsPerCluster * bytesPerSector);
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HANDLE hSourceFile = CreateFile(src_path.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
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if (hSourceFile == INVALID_HANDLE_VALUE)
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{
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ec = std::error_code(GetLastError(), std::system_category());
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qDebug() << "Failed to open source file" << src_path.c_str();
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return false;
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}
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HANDLE hDestFile = CreateFile(dst_path.c_str(), GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, 0, NULL);
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if (hDestFile == INVALID_HANDLE_VALUE)
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{
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ec = std::error_code(GetLastError(), std::system_category());
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CloseHandle(hSourceFile);
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qDebug() << "Failed to open dest file" << dst_path.c_str();
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return false;
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}
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DWORD bytesReturned = 0;
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// Set the destination to be sparse while we clone.
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// Important to avoid allocating zero-backed real storage when calling SetFileInformationByHandle()
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// below which will just be released when cloning file extents.
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if (!DeviceIoControl(hDestFile, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &bytesReturned, nullptr)) {
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qDebug() << "Failed to set file sparseness for destination file" << dst_path.c_str();
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ec = std::error_code(GetLastError(), std::system_category());
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return false;
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}
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LARGE_INTEGER sourceFileLengthStruct;
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if (!GetFileSizeEx(hSourceFile, &sourceFileLengthStruct)) {
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ec = std::error_code(GetLastError(), std::system_category());
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qDebug() << "Failed to get file info for source file" << src_path.c_str();
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return false;
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}
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DWORD sourceFileLength = sourceFileLengthStruct.QuadPart;
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// Set the destination on-disk size the same as the source.
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FILE_END_OF_FILE_INFO fileSizeInfo{sourceFileLength};
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if (!SetFileInformationByHandle(hDestFile, FILE_INFO_BY_HANDLE_CLASS::FileEndOfFileInfo,
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&fileSizeInfo, sizeof(FILE_END_OF_FILE_INFO)))
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{
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ec = std::error_code(GetLastError(), std::system_category());
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qDebug() << "Failed to set end of file on destination file" << dst_path.c_str();
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return false;
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}
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DUPLICATE_EXTENTS_DATA duplicateExtentsData = DUPLICATE_EXTENTS_DATA{ hSourceFile };
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long fileSizeRoundedUpToClusterBoundary = RoundUpToPowerOf2(sourceFileLength, srcClusterSize);
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long sourceOffset = 0;
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while(sourceOffset < sourceFileLength)
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{
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duplicateExtentsData.SourceFileOffset.QuadPart = sourceOffset;
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duplicateExtentsData.TargetFileOffset.QuadPart = sourceOffset;
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long thisChunkSize = std::min(fileSizeRoundedUpToClusterBoundary - sourceOffset, WinMaxChunkSize);
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duplicateExtentsData.ByteCount.QuadPart = thisChunkSize;
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DWORD numBytesReturned = 0;
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bool ioctlResult = DeviceIoControl(
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hDestFile,
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FSCTL_DUPLICATE_EXTENTS_TO_FILE,
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&duplicateExtentsData,
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sizeof(DUPLICATE_EXTENTS_DATA),
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nullptr,
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0,
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&numBytesReturned,
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nullptr);
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if (!ioctlResult)
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{
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DWORD err = GetLastError();
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ec = std::error_code(err, std::system_category());
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QString additionalMessage;
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if (err == ERROR_BLOCK_TOO_MANY_REFERENCES)
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{
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static const int MaxClonesPerFile = 8175;
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additionalMessage = QString(
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" This is ERROR_BLOCK_TOO_MANY_REFERENCES and may mean you have surpassed the maximum "
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"allowed %1 references for a single file. "
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"See https://docs.microsoft.com/en-us/windows-server/storage/refs/block-cloning#functionality-restrictions-and-remarks"
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).arg(MaxClonesPerFile);
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}
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qWarning() << "Failed copy-on-write cloning from source file" << src_path.c_str() << "to" << dst_path.c_str() << "." << additionalMessage;
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return false;
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}
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sourceOffset += thisChunkSize;
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}
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CloseHandle(hDestFile);
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CloseHandle(hSourceFile);
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return true;
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#else
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ec = std::make_error_code(std::errc::not_supported);
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qWarning() << "not built with refs support";
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return false;
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#endif
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}
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bool ioctl_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec)
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{
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/**
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* This algorithm inspired from https://github.com/0xbadfca11/reflink
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* LICENSE MIT
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*
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* Additional references
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* https://learn.microsoft.com/en-us/windows/win32/api/winioctl/ni-winioctl-fsctl_duplicate_extents_to_file
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* https://github.com/microsoft/CopyOnWrite/blob/main/lib/Windows/WindowsCopyOnWriteFilesystem.cs#L94
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*/
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HANDLE hSourceFile = CreateFileW(src_path.c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, nullptr);
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@ -1495,11 +1313,6 @@ bool ioctl_clone(const std::wstring& src_path, const std::wstring& dst_path, std
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dupExtent.SourceFileOffset.QuadPart = dupExtent.TargetFileOffset.QuadPart = offset;
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dupExtent.ByteCount.QuadPart = std::min(splitThreshold, remain);
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_ASSERTE(dupExtent.SourceFileOffset.QuadPart % sourceFileIntegrity.ClusterSizeInBytes == 0);
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_ASSERTE(dupExtent.ByteCount.QuadPart % sourceFileIntegrity.ClusterSizeInBytes == 0);
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_ASSERTE(dupExtent.ByteCount.QuadPart <= UINT32_MAX);
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_RPT3(_CRT_WARN, "Remain=%llx\nOffset=%llx\nLength=%llx\n\n", remain, dupExtent.SourceFileOffset.QuadPart, dupExtent.ByteCount.QuadPart);
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if (!DeviceIoControl(hDestFile, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &dupExtent, sizeof(dupExtent), nullptr, 0, &junk, nullptr))
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{
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DWORD err = GetLastError();
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@ -1559,6 +1372,7 @@ bool ioctl_clone(const std::wstring& src_path, const std::wstring& dst_path, std
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}
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#elif defined(Q_OS_LINUX)
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bool linux_ficlone(const std::string& src_path, const std::string& dst_path, std::error_code& ec)
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{
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// https://man7.org/linux/man-pages/man2/ioctl_ficlone.2.html
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@ -1599,6 +1413,7 @@ bool linux_ficlone(const std::string& src_path, const std::string& dst_path, std
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}
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#elif defined(Q_OS_MACOS) || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD)
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bool macos_bsd_clonefile(const std::string& src_path, const std::string& dst_path, std::error_code& ec)
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{
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// clonefile(const char * src, const char * dst, int flags);
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@ -361,12 +361,20 @@ enum class FilesystemType {
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UNKNOWN
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};
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/**
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* @brief Ordered Mapping of enum types to reported filesystem names
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* this maping is non exsaustive, it just attempts to capture the filesystems which could be reasonalbly be in use .
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* all string values are in uppercase, use `QString.toUpper()` or equivalent during lookup.
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*
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* QMap is ordered
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*
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||||
*/
|
||||
static const QMap<FilesystemType, QString> s_filesystem_type_names = {
|
||||
{FilesystemType::FAT, QString("FAT")},
|
||||
{FilesystemType::NTFS, QString("NTFS")},
|
||||
{FilesystemType::REFS, QString("REFS")},
|
||||
{FilesystemType::EXT, QString("EXT")},
|
||||
{FilesystemType::EXT_2_OLD, QString("EXT2_OLD")},
|
||||
{FilesystemType::EXT_2_OLD, QString("EXT_2_OLD")},
|
||||
{FilesystemType::EXT_2_3_4, QString("EXT2/3/4")},
|
||||
{FilesystemType::XFS, QString("XFS")},
|
||||
{FilesystemType::BTRFS, QString("BTRFS")},
|
||||
@ -381,15 +389,27 @@ static const QMap<FilesystemType, QString> s_filesystem_type_names = {
|
||||
{FilesystemType::UNKNOWN, QString("UNKNOWN")}
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @brief Ordered Mapping of reported filesystem names to enum types
|
||||
* this maping is non exsaustive, it just attempts to capture the many way these filesystems could be reported.
|
||||
* all keys are in uppercase, use `QString.toUpper()` or equivalent during lookup.
|
||||
*
|
||||
* QMap is ordered
|
||||
*
|
||||
*/
|
||||
static const QMap<QString, FilesystemType> s_filesystem_type_names_inverse = {
|
||||
{QString("FAT"), FilesystemType::FAT},
|
||||
{QString("NTFS"), FilesystemType::NTFS},
|
||||
{QString("REFS"), FilesystemType::REFS},
|
||||
{QString("EXT2_OLD"), FilesystemType::EXT_2_OLD},
|
||||
{QString("EXT_2_OLD"), FilesystemType::EXT_2_OLD},
|
||||
{QString("EXT2"), FilesystemType::EXT_2_3_4},
|
||||
{QString("EXT3"), FilesystemType::EXT_2_3_4},
|
||||
{QString("EXT4"), FilesystemType::EXT_2_3_4},
|
||||
{QString("EXT"), FilesystemType::EXT},
|
||||
{QString("EXT2/3/4"), FilesystemType::EXT_2_3_4},
|
||||
{QString("EXT_2_3_4"), FilesystemType::EXT_2_3_4},
|
||||
{QString("EXT"), FilesystemType::EXT}, // must come after all other EXT variants to prevent greedy detection
|
||||
{QString("XFS"), FilesystemType::XFS},
|
||||
{QString("BTRFS"), FilesystemType::BTRFS},
|
||||
{QString("NFS"), FilesystemType::NFS},
|
||||
@ -403,9 +423,32 @@ static const QMap<QString, FilesystemType> s_filesystem_type_names_inverse = {
|
||||
{QString("UNKNOWN"), FilesystemType::UNKNOWN}
|
||||
};
|
||||
|
||||
inline QString getFilesystemTypeName(FilesystemType type) {
|
||||
return s_filesystem_type_names.constFind(type).value();
|
||||
}
|
||||
/**
|
||||
* @brief Get the string name of Filesystem enum object
|
||||
*
|
||||
* @param type
|
||||
* @return QString
|
||||
*/
|
||||
QString getFilesystemTypeName(FilesystemType type);
|
||||
|
||||
/**
|
||||
* @brief Get the Filesystem enum object from a name
|
||||
* Does a lookup of the type name and returns an exact match
|
||||
*
|
||||
* @param name
|
||||
* @return FilesystemType
|
||||
*/
|
||||
FilesystemType getFilesystemType(const QString& name);
|
||||
|
||||
/**
|
||||
* @brief Get the Filesystem enum object from a name
|
||||
* Does a fuzzy lookup of the type name and returns an apropreate match
|
||||
*
|
||||
* @param name
|
||||
* @return FilesystemType
|
||||
*/
|
||||
FilesystemType getFilesystemTypeFuzzy(const QString& name);
|
||||
|
||||
|
||||
struct FilesystemInfo {
|
||||
FilesystemType fsType = FilesystemType::UNKNOWN;
|
||||
@ -430,9 +473,9 @@ QString NearestExistentAncestor(const QString& path);
|
||||
*/
|
||||
FilesystemInfo statFS(const QString& path);
|
||||
|
||||
|
||||
static const QList<FilesystemType> s_clone_filesystems = {
|
||||
FilesystemType::BTRFS, FilesystemType::APFS, FilesystemType::ZFS, FilesystemType::XFS, FilesystemType::REFS
|
||||
FilesystemType::BTRFS, FilesystemType::APFS, FilesystemType::ZFS,
|
||||
FilesystemType::XFS, FilesystemType::REFS
|
||||
};
|
||||
|
||||
/**
|
||||
@ -497,13 +540,7 @@ class clone : public QObject {
|
||||
bool clone_file(const QString& src, const QString& dst, std::error_code& ec);
|
||||
|
||||
#if defined(Q_OS_WIN)
|
||||
|
||||
bool winbtrfs_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec);
|
||||
bool refs_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec);
|
||||
bool ioctl_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec);
|
||||
|
||||
#define USE_IOCTL_CLONE true
|
||||
|
||||
bool win_ioctl_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec);
|
||||
#elif defined(Q_OS_LINUX)
|
||||
bool linux_ficlone(const std::string& src_path, const std::string& dst_path, std::error_code& ec);
|
||||
#elif defined(Q_OS_MACOS) || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user