mingw/mingw-packages/mingw-w64-qt5/0046-qt-5.4.1-Revert-Revert-fix-NTFS-mount-points.patch

diff -Naur qt-everywhere-src-5.12.4-orig/qtbase/src/corelib/io/qfilesystemengine_win.cpp qt-everywhere-src-5.12.4/qtbase/src/corelib/io/qfilesystemengine_win.cpp
--- qt-everywhere-src-5.12.4-orig/qtbase/src/corelib/io/qfilesystemengine_win.cpp	2019-06-12 23:59:14.000000000 +0300
+++ qt-everywhere-src-5.12.4/qtbase/src/corelib/io/qfilesystemengine_win.cpp	2019-06-15 15:56:30.187254700 +0300
@@ -936,9 +936,10 @@
     int errorCode = GetLastError();
     if (errorCode == ERROR_ACCESS_DENIED || errorCode == ERROR_SHARING_VIOLATION) {
         WIN32_FIND_DATA findData;
-        if (getFindData(fname.nativeFilePath(), findData)
+        const QString nativeFilePath = fname.nativeFilePath();
+        if (getFindData(nativeFilePath, findData)
             && findData.dwFileAttributes != INVALID_FILE_ATTRIBUTES) {
-            data.fillFromFindData(findData, true, fname.isDriveRoot());
+            data.fillFromFindData(findData, true, fname.isDriveRoot(), nativeFilePath);
             filledData = true;
         }
     }
@@ -1053,8 +1054,9 @@
         data.knownFlagsMask |= QFileSystemMetaData::LinkType;
         if (data.fileAttribute_ & FILE_ATTRIBUTE_REPARSE_POINT) {
             WIN32_FIND_DATA findData;
-            if (getFindData(fname.nativeFilePath(), findData))
-                data.fillFromFindData(findData, true);
+            const QString nativeFilePath = fname.nativeFilePath();
+            if (getFindData(nativeFilePath, findData))
+                data.fillFromFindData(findData, true, false, nativeFilePath);
         }
     }
     data.knownFlagsMask |= what;
diff -Naur qt-everywhere-src-5.12.4-orig/qtbase/src/corelib/io/qfilesystemiterator_win.cpp qt-everywhere-src-5.12.4/qtbase/src/corelib/io/qfilesystemiterator_win.cpp
--- qt-everywhere-src-5.12.4-orig/qtbase/src/corelib/io/qfilesystemiterator_win.cpp	2019-06-12 23:59:14.000000000 +0300
+++ qt-everywhere-src-5.12.4/qtbase/src/corelib/io/qfilesystemiterator_win.cpp	2019-06-15 15:56:30.187254700 +0300
@@ -133,7 +133,7 @@
         fileEntry = QFileSystemEntry(dirPath + fileName);
         metaData = QFileSystemMetaData();
         if (!fileName.endsWith(QLatin1String(".lnk"))) {
-            metaData.fillFromFindData(findData, true);
+            metaData.fillFromFindData(findData, true, false, fileEntry.nativeFilePath());
         }
         return true;
     }
diff -Naur qt-everywhere-src-5.12.4-orig/qtbase/src/corelib/io/qfilesystemmetadata_p.h qt-everywhere-src-5.12.4/qtbase/src/corelib/io/qfilesystemmetadata_p.h
--- qt-everywhere-src-5.12.4-orig/qtbase/src/corelib/io/qfilesystemmetadata_p.h	2019-06-12 23:59:14.000000000 +0300
+++ qt-everywhere-src-5.12.4/qtbase/src/corelib/io/qfilesystemmetadata_p.h	2019-06-15 15:56:30.187254700 +0300
@@ -231,7 +231,7 @@
 
 #if defined(Q_OS_WIN)
     inline void fillFromFileAttribute(DWORD fileAttribute, bool isDriveRoot = false);
-    inline void fillFromFindData(WIN32_FIND_DATA &findData, bool setLinkType = false, bool isDriveRoot = false);
+    inline void fillFromFindData(WIN32_FIND_DATA &findData, bool setLinkType = false, bool isDriveRoot = false, const QString &nativeFullFilePath = QString());
 #  ifndef Q_OS_WINRT
     inline void fillFromFindInfo(BY_HANDLE_FILE_INFORMATION &fileInfo);
 #  endif
@@ -339,7 +339,7 @@
     knownFlagsMask |= FileType | DirectoryType | HiddenAttribute | ExistsAttribute;
 }
 
-inline void QFileSystemMetaData::fillFromFindData(WIN32_FIND_DATA &findData, bool setLinkType, bool isDriveRoot)
+inline void QFileSystemMetaData::fillFromFindData(WIN32_FIND_DATA &findData, bool setLinkType, bool isDriveRoot, const QString &nativeFullFilePath)
 {
     fillFromFileAttribute(findData.dwFileAttributes, isDriveRoot);
     birthTime_ = findData.ftCreationTime;
@@ -359,14 +359,21 @@
     if (setLinkType) {
         knownFlagsMask |=  LinkType;
         entryFlags &= ~LinkType;
-        if (fileAttribute_ & FILE_ATTRIBUTE_REPARSE_POINT) {
-            if (findData.dwReserved0 == IO_REPARSE_TAG_SYMLINK) {
-                entryFlags |= LinkType;
-#if defined(IO_REPARSE_TAG_MOUNT_POINT)
-            } else if ((fileAttribute_ & FILE_ATTRIBUTE_DIRECTORY)
-                    && (findData.dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT)) {
-                entryFlags |= JunctionType;
-#endif
+        if (fileAttribute_ & FILE_ATTRIBUTE_REPARSE_POINT) {
+            if (findData.dwReserved0 == IO_REPARSE_TAG_SYMLINK) {
+                entryFlags |= LinkType;
+            } else if (findData.dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT) {
+                // Junctions and mount points are implemented as NTFS reparse points.
+                // But mount points cannot be treated as symlinks because they might
+                // not have a link target.
+                wchar_t buf[50];
+                QString path = nativeFullFilePath;
+                if (!path.endsWith(QLatin1Char('\\')))
+                    path.append(QLatin1Char('\\'));
+                BOOL isMountPoint = GetVolumeNameForVolumeMountPoint(reinterpret_cast<const wchar_t*>(path.utf16()), buf, sizeof(buf) / sizeof(wchar_t));
+                if (!isMountPoint)
+                    entryFlags |= LinkType;
+            }
         }
     }
 }