Index: /trunk/include/iprt/types.h
===================================================================
--- /trunk/include/iprt/types.h	(revision 38871)
+++ /trunk/include/iprt/types.h	(revision 38872)
@@ -2202,4 +2202,18 @@
 } RTEXITCODE;
 
+/**
+ * Range descriptor.
+ */
+typedef struct RTRANGE
+{
+    /** Start offset. */
+    uint64_t    offStart;
+    /** Range size. */
+    size_t      cbRange;
+} RTRANGE;
+/** Pointer to a range descriptor. */
+typedef RTRANGE *PRTRANGE;
+/** Pointer to a readonly range descriptor. */
+typedef const RTRANGE *PCRTRANGE;
 
 #ifdef __cplusplus