1 files changed, 10 insertions, 3 deletions
diff --git a/Source/Kernel/VFS/FileSystem.proto.h b/Source/Kernel/VFS/FileSystem.proto.h
index a614c13..93b37f8 100644
--- a/Source/Kernel/VFS/FileSystem.proto.h
+++ b/Source/Kernel/VFS/FileSystem.proto.h
@@ -5,17 +5,24 @@
 class FSNode;
 class FileNode;
 class DirectoryNode;
+class FileSystem;
+
+namespace VFS {
+	bool unmount(FileSystem*);
+}
 
 //This abstract class describes a filesystem
 class FileSystem {
+	friend bool VFS::unmount(FileSystem*);
+
 	protected:
-	virtual ~FileSystem() {}
+	virtual ~FileSystem();
 	bool m_isWritable;	//false = read only
 	DirectoryNode* m_rootNode;
 
-	public:
-	bool unmount();
+	virtual bool unmount() = 0;	//Sync data with the disk
 
+	public:
 	bool isWritable() { return m_isWritable; }
 	DirectoryNode* getRootNode() { return m_rootNode; }