VirtualFiles: Ensure the target location supports vfs

Fixes: #8131

2 files changed, 20 insertions, 0 deletions

diff --git a/src/common/vfs.cpp b/src/common/vfs.cpp
index d97ea69cc..8c5c53d7b 100644
--- a/src/common/vfs.cpp
+++ b/src/common/vfs.cpp
@@ -21,6 +21,8 @@
 #include "version.h"
 #include "syncjournaldb.h"
 
+#include "common/filesystembase.h"
+
 #include <QPluginLoader>
 #include <QLoggingCategory>
 
@@ -60,6 +62,22 @@ Optional<Vfs::Mode> Vfs::modeFromString(const QString &str)
     return {};
 }
 
+Result<bool, QString> Vfs::checkAvailability(const QString &path)
+{
+    const auto mode = bestAvailableVfsMode();
+#ifdef Q_OS_WIN
+    if (mode == Mode::WindowsCfApi) {
+        const auto fs = FileSystem::fileSystemForPath(path);
+        if (fs != QLatin1String("NTFS")) {
+            return tr("The Virtual filesystem feature requires a NTFS file system, %1 is using %2").arg(path, fs);
+        }
+    }
+#else
+    Q_UNUSED(path);
+#endif
+    return true;
+}
+
 void Vfs::start(const VfsSetupParams &params)
 {
     _setupParams = params;
diff --git a/src/common/vfs.h b/src/common/vfs.h
index 3e17a17f9..c11f59bb2 100644
--- a/src/common/vfs.h
+++ b/src/common/vfs.h
@@ -99,6 +99,8 @@ public:
     static QString modeToString(Mode mode);
     static Optional<Mode> modeFromString(const QString &str);
 
+    static Result<bool, QString> checkAvailability(const QString &path);
+
     enum class AvailabilityError
     {
         // Availability can't be retrieved due to db error