Extracted kernel structures for device addressing in ifconfig.

[virt-mem.git] / lib / virt_mem_utils.ml

diff --git a/lib/virt_mem_utils.ml b/lib/virt_mem_utils.ml
index 0a3b687..a1eab8f 100644 (file)
--- a/lib/virt_mem_utils.ml
+++ b/lib/virt_mem_utils.ml
@@ -117,6 +117,16 @@ let pad width str =
   if n >= width then str
   else (* if n < width then *) str ^ String.make (width-n) ' '
 
+(* Truncate an OCaml string at the first ASCII NUL character, ie. as
+ * if it were a C string.
+ *)
+let truncate_c_string str =
+  try
+    let i = String.index str '\000' in
+    String.sub str 0 i
+  with
+    Not_found -> str
+
 (** General binary tree type.  Data 'a is stored in the leaves and 'b
     is stored in the nodes. *)
 type ('a,'b) binary_tree =