diff --git a/include/compiz-core.h b/include/compiz-core.h
index 8aadf7b..d5fcbac 100644
--- a/include/compiz-core.h
+++ b/include/compiz-core.h
@@ -28,7 +28,7 @@
 
 #include <compiz-plugin.h>
 
-#define CORE_ABIVERSION 20071103
+#define CORE_ABIVERSION 20080130
 
 #include <stdio.h>
 #include <sys/time.h>
@@ -344,6 +344,24 @@ compObjectFind (CompObject     *parent,
     else						     \
 	return (def)
 
+/* session.c */
+
+void
+initSession (char *smPrevClientId);
+
+void
+closeSession (void);
+
+typedef void (*SessionSaveYourselfProc) (int  saveType,
+					 int  interactStyle,
+					 Bool shutdown,
+					 Bool fast);
+
+typedef void (*SessionDieProc) (void);
+
+typedef void (*SessionSaveCompleteProc) (void);
+
+typedef void (*SessionShutdownCancelledProc) (void);
 
 /* option.c */
 
@@ -647,6 +665,11 @@ struct _CompCore {
 
     FileWatchAddedProc   fileWatchAdded;
     FileWatchRemovedProc fileWatchRemoved;
+
+    SessionSaveYourselfProc      sessionSaveYourself;
+    SessionDieProc               sessionDie;
+    SessionSaveCompleteProc      sessionSaveComplete;
+    SessionShutdownCancelledProc sessionShutdownCancelled;
 };
 
 int
@@ -3088,15 +3111,6 @@ getPluginDisplayIndex (CompDisplay *d,
 		       int	   *index);
 
 
-/* session.c */
-
-void
-initSession (char *smPrevClientId);
-
-void
-closeSession (void);
-
-
 /* fragment.c */
 
 #define MAX_FRAGMENT_FUNCTIONS 16
diff --git a/src/session.c b/src/session.c
index 0afa6b7..b8a39bd 100644
--- a/src/session.c
+++ b/src/session.c
@@ -152,6 +152,8 @@ saveYourselfCallback (SmcConn	connection,
 		      int	interact_Style,
 		      Bool	fast)
 {
+    (*core.sessionSaveYourself) (saveType, interact_Style, shutdown, fast);
+
     if (!SmcGetProperties (connection, saveYourselfGotProps, NULL))
 	SmcSaveYourselfDone (connection, 1);
 }
@@ -160,6 +162,8 @@ static void
 dieCallback (SmcConn   connection,
 	     SmPointer clientData)
 {
+    (*core.sessionDie) ();
+
     closeSession ();
     exit (0);
 }
@@ -168,12 +172,14 @@ static void
 saveCompleteCallback (SmcConn	connection,
 		      SmPointer clientData)
 {
+    (*core.sessionSaveComplete) ();
 }
 
 static void
 shutdownCancelledCallback (SmcConn   connection,
 			   SmPointer clientData)
 {
+    (*core.sessionShutdownCancelled) ();
 }
 
 void