diff --git a/common/fake_hardware.h b/common/fake_hardware.h
index 00a212e..29ba607 100644
--- a/common/fake_hardware.h
+++ b/common/fake_hardware.h
@@ -194,6 +194,8 @@
 
   void SetWarmReset(bool warm_reset) override { warm_reset_ = warm_reset; }
 
+  void SetVbmetaDigestForInactiveSlot(bool reset) override {}
+
   // Getters to verify state.
   int GetMaxKernelKeyRollforward() const { return kernel_max_rollforward_; }
 
diff --git a/common/hardware_interface.h b/common/hardware_interface.h
index cad32fc..7460097 100644
--- a/common/hardware_interface.h
+++ b/common/hardware_interface.h
@@ -137,6 +137,10 @@
   // needed on the next reboot. Otherwise, clears the flag.
   virtual void SetWarmReset(bool warm_reset) = 0;
 
+  // If not reset, sets the vbmeta digest of the inactive slot as a sysprop.
+  // Otherwise, clears the sysprop.
+  virtual void SetVbmetaDigestForInactiveSlot(bool reset) = 0;
+
   // Return the version/timestamp for partition `partition_name`.
   // Don't make any assumption about the formatting of returned string.
   // Only used for logging/debugging purposes.