1 files changed, 32 insertions, 0 deletions
diff --git a/src/installer/corehost/cli/apphost/bundle/marker.h b/src/installer/corehost/cli/apphost/bundle/marker.h
new file mode 100644
index 00000000000..52e185fbe79
--- /dev/null
+++ b/src/installer/corehost/cli/apphost/bundle/marker.h
@@ -0,0 +1,32 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#ifndef __MARKER_H__
+#define __MARKER_H__
+
+#include <cstdint>
+
+namespace bundle
+{
+#pragma pack(push, 1)
+    union marker_t
+    {
+    public:
+        uint8_t placeholder[40];
+        struct
+        {
+            int64_t bundle_header_offset;
+            uint8_t signature[32];
+        } locator;
+
+        static int64_t header_offset();
+        static bool is_bundle()
+        {
+            return header_offset() != 0;
+        }
+    };
+#pragma pack(pop)
+
+}
+#endif // __MARKER_H__