1 files changed, 28 insertions, 0 deletions
diff --git a/xorg-server/dix/inpututils.c b/xorg-server/dix/inpututils.c
index 077ffce01..aeace6ef8 100644
--- a/xorg-server/dix/inpututils.c
+++ b/xorg-server/dix/inpututils.c
@@ -36,6 +36,7 @@
 #include "xkbsrv.h"
 #include "xkbstr.h"
 #include "inpututils.h"
+#include "eventstr.h"
 
 /* Check if a button map change is okay with the device.
  * Returns -1 for BadValue, as it collides with MappingBusy. */
@@ -556,3 +557,30 @@ CountBits(const uint8_t *mask, int len)
 
     return ret;
 }
+
+/**
+ * Verifies sanity of the event. If the event is not an internal event,
+ * memdumps the first 32 bytes of event to the log, a backtrace, then kill
+ * the server.
+ */
+void verify_internal_event(const InternalEvent *ev)
+{
+    if (ev && ev->any.header != ET_Internal)
+    {
+        int i;
+        unsigned char *data = (unsigned char*)ev;
+
+        ErrorF("dix: invalid event type %d\n", ev->any.header);
+
+        for (i = 0; i < sizeof(xEvent); i++, data++)
+        {
+            ErrorF("%02hx ", *data);
+
+            if ((i % 8) == 7)
+                ErrorF("\n");
+        }
+
+        xorg_backtrace();
+        FatalError("Wrong event type %d. Aborting server\n", ev->any.header);
+    }
+}