diff --git a/VolumeManager.h b/VolumeManager.h
index f989cdb..5ed6f21 100644
--- a/VolumeManager.h
+++ b/VolumeManager.h
@@ -52,7 +52,7 @@
 
     int listVolumes(SocketClient *cli);
     int mountVolume(const char *label);
-    int unmountVolume(const char *label);
+    int unmountVolume(const char *label, bool force);
     int shareVolume(const char *label, const char *method);
     int unshareVolume(const char *label, const char *method);
     int shareAvailable(const char *method, bool *avail);
@@ -62,9 +62,9 @@
     int createAsec(const char *id, unsigned numSectors, const char *fstype,
                    const char *key, int ownerUid);
     int finalizeAsec(const char *id);
-    int destroyAsec(const char *id);
+    int destroyAsec(const char *id, bool force);
     int mountAsec(const char *id, const char *key, int ownerUid);
-    int unmountAsec(const char *id);
+    int unmountAsec(const char *id, bool force);
     int renameAsec(const char *id1, const char *id2);
     int getAsecMountPath(const char *id, char *buffer, int maxlen);