diff --git a/Makefile b/Makefile
index b05f7fb1..d267920f 100644
--- a/Makefile
+++ b/Makefile
@@ -56,6 +56,7 @@ C_FILES += rtemsbsd/src/rtems-bsd-timeout.c
 C_FILES += rtemsbsd/src/rtems-bsd-timesupport.c
 C_FILES += rtemsbsd/src/rtems-bsd-newproc.c
 C_FILES += rtemsbsd/src/rtems-bsd-vm_glue.c
+C_FILES += rtemsbsd/src/rtems-bsd-copyinout.c
 C_FILES += freebsd/kern/subr_eventhandler.c
 C_FILES += freebsd/kern/kern_subr.c
 C_FILES += freebsd/kern/kern_tc.c
diff --git a/freebsd-to-rtems.py b/freebsd-to-rtems.py
index e01bf903..3cc7fddc 100755
--- a/freebsd-to-rtems.py
+++ b/freebsd-to-rtems.py
@@ -551,6 +551,7 @@ rtems.addRTEMSSourceFiles(
 		'src/rtems-bsd-timesupport.c',
 		'src/rtems-bsd-newproc.c',
 		'src/rtems-bsd-vm_glue.c',
+		'src/rtems-bsd-copyinout.c',
 	]
 )
 rtems.addEmptyHeaderFiles(
diff --git a/rtemsbsd/src/rtems-bsd-copyinout.c b/rtemsbsd/src/rtems-bsd-copyinout.c
new file mode 100644
index 00000000..49c55abb
--- /dev/null
+++ b/rtemsbsd/src/rtems-bsd-copyinout.c
@@ -0,0 +1,31 @@
+/**
+ * @file
+ *
+ * @ingroup rtems_bsd_rtems
+ *
+ * @brief This file contains the RTEMS implementation of the bsd functions
+ * from the copyinout.c file.
+ */
+
+/*
+ *  COPYRIGHT (c) 2012.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#include <freebsd/machine/rtems-bsd-config.h>
+
+#include <string.h>
+#include <stdio.h>
+#include <rtems.h>
+
+int
+copyinstr(const void *udaddr, void *kaddr, size_t len, size_t *done)
+{
+  memcpy(kaddr, udaddr, len);
+  *done = len;
+  return 0;
+}