Kernel: Customize File::unref() and make it virtual

Make File inherit from RefCountedBase and provide a custom unref()
implementation. This will allow subclasses that participate in lists to
remove themselves in a safe way when being destroyed.

1 files changed, 2 insertions, 1 deletions

diff --git a/Kernel/FileSystem/File.h b/Kernel/FileSystem/File.h
index cd29de6e5c..2914d4c088 100644
--- a/Kernel/FileSystem/File.h
+++ b/Kernel/FileSystem/File.h
@@ -71,9 +71,10 @@ public:
 //   - Should create a Region in the Process and return it if successful.
 
 class File
-    : public RefCounted<File>
+    : public RefCountedBase
     , public Weakable<File> {
 public:
+    virtual bool unref() const;
     virtual ~File();
 
     virtual KResultOr<NonnullRefPtr<FileDescription>> open(int options);