Sandbox policy and intercepts for the MITIGATION_WIN32K_DISABLE policy for renderer processes.

sandbox/win/src/sandbox_policy.h

Index: sandbox/win/src/sandbox_policy.h
diff --git a/sandbox/win/src/sandbox_policy.h b/sandbox/win/src/sandbox_policy.h
index a9f124516218ae00cebb1f42cf58bd7250798234..f67f26514bf847133b871d8eeb10e3786168ea0c 100644
--- a/sandbox/win/src/sandbox_policy.h
+++ b/sandbox/win/src/sandbox_policy.h
@@ -26,7 +26,8 @@ class TargetPolicy {
     SUBSYS_PROCESS,           // Creation of child processes.
     SUBSYS_REGISTRY,          // Creation and opening of registry keys.
     SUBSYS_SYNC,              // Creation of named sync objects.
-    SUBSYS_HANDLES            // Duplication of handles to other processes.
+    SUBSYS_HANDLES,           // Duplication of handles to other processes.
+    SUBSYS_WIN32K_LOCKDOWN    // Win32K Lockdown related policy.

[jschuh, 2014/06/06 03:23:36]

Remove this SubSystem. You actually shouldn't need to modify this file at all.

[ananta, 2014/06/06 23:57:35]

Leaving this on the same lines as the policy stuff.

   };
 
   // Allowable semantics when a rule is matched.
@@ -52,7 +53,8 @@ class TargetPolicy {
     EVENTS_ALLOW_ANY,      // Allows the creation of an event with full access.
     EVENTS_ALLOW_READONLY, // Allows opening an even with synchronize access.
     REG_ALLOW_READONLY,    // Allows readonly access to a registry key.
-    REG_ALLOW_ANY          // Allows read and write access to a registry key.
+    REG_ALLOW_ANY,         // Allows read and write access to a registry key.
+    LOCKDOWN_WIN32K         // Locks down the Win32K subsystem for the process.     

[jschuh, 2014/06/06 03:23:36]

Remove this Semantic value.

[ananta, 2014/06/06 23:57:35]

Ditto

   };
 
   // Increments the reference count of this object. The reference count must