Summary
-------

The required permission for DCmd VM.start_java_debugging will be changed from monitor to control.

Problem
-------

The DCmd VM.start_java_debugging provides the ability to enable to connect to the VM with a debbugger. As the task of debugging provides the debugger with more than only monitoring capablilities, e.g. fields and data in the VM can be modified, a permission of type "control" seems more suitable.

Solution
--------

The permission needs to be changed in the coding for diagnostic commands in hotspot.

Specification
-------------

The (simple) patch looks like this:  

diff --git a/src/hotspot/share/services/diagnosticCommand.hpp
 b/src/hotspot/share/services/diagnosticCommand.hpp  
--- a/src/hotspot/share/services/diagnosticCommand.hpp  
+++ b/src/hotspot/share/services/diagnosticCommand.hpp  
@@ -880,7 +880,7 @@  
     return "High: Switches the VM into Java debug mode.";  
   }  
   static const JavaPermission permission() {  
-    JavaPermission p = { "java.lang.management.ManagementPermission", "monitor", NULL };  
+    JavaPermission p = { "java.lang.management.ManagementPermission", "control", NULL };  
     return p;  
   }  
   static int num_arguments() { return 0; }