1 files changed, 7 insertions, 0 deletions
diff --git a/Duplicati/Library/Snapshots/NoSnapshot.cs b/Duplicati/Library/Snapshots/NoSnapshot.cs
index 1500e6cc1..b2408d462 100644
--- a/Duplicati/Library/Snapshots/NoSnapshot.cs
+++ b/Duplicati/Library/Snapshots/NoSnapshot.cs
@@ -169,6 +169,13 @@ namespace Duplicati.Library.Snapshots
         /// <returns><c>true</c> if this instance is a block device; otherwise, <c>false</c>.</returns>
         /// <param name="file">The file or folder to examine</param>
         public abstract bool IsBlockDevice(string file);
+        
+        /// <summary>
+        /// Gets a unique hardlink target ID
+        /// </summary>
+        /// <returns>The hardlink ID</returns>
+        /// <param name="file">The file or folder to examine</param>
+        public abstract string HardlinkTargetID(string path);
         #endregion
     }
 }