diff --git a/src/common/filesystem/include/resourcefile.h b/src/common/filesystem/include/resourcefile.h
index 4a7f3255bc..5776963d79 100644
--- a/src/common/filesystem/include/resourcefile.h
+++ b/src/common/filesystem/include/resourcefile.h
@@ -219,6 +219,11 @@ public:
 		auto l = GetLump(entry);
 		return l ? l->LumpSize : -1;
 	}
+	size_t Offset(int entry)
+	{
+		auto l = GetLump(entry);
+		return l ? l->GetFileOffset() : -1;
+	}
 
 	FileReader GetEntryReader(int entry, bool newreader = true)
 	{
@@ -232,6 +237,18 @@ public:
 		return l ? l->Flags : 0;
 	}
 
+	int GetEntryNamespace(int entry)
+	{
+		auto l = GetLump(entry);
+		return l ? l->GetNamespace() : 0;
+	}
+
+	int GetEntryResourceID(int entry)
+	{
+		auto l = GetLump(entry);
+		return l ? l->GetIndexNum() : 0;
+	}
+
 	ResourceData Read(int entry)
 	{
 		auto fr = GetEntryReader(entry, false);
diff --git a/src/common/filesystem/source/filesystem.cpp b/src/common/filesystem/source/filesystem.cpp
index 7f36e513ae..b4d7ebab31 100644
--- a/src/common/filesystem/source/filesystem.cpp
+++ b/src/common/filesystem/source/filesystem.cpp
@@ -206,11 +206,6 @@ void FileSystem::DeleteAll ()
 	Hashes.clear();
 	NumEntries = 0;
 
-	// explicitly delete all manually added lumps.
-	for (auto &frec : FileInfo)
-	{
-		if (frec.rfnum == -1) delete frec.lump;
-	}
 	FileInfo.clear();
 	for (int i = (int)Files.size() - 1; i >= 0; --i)
 	{