1 files changed, 26 insertions, 0 deletions
diff --git a/pkg/tcpip/testutil/testutil_unsafe.go b/pkg/tcpip/testutil/testutil_unsafe.go
new file mode 100644
index 000000000..5ff764800
--- /dev/null
+++ b/pkg/tcpip/testutil/testutil_unsafe.go
@@ -0,0 +1,26 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package testutil
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+// unsafeExposeUnexportedFields takes a Value and returns a version of it in
+// which even unexported fields can be read and written.
+func unsafeExposeUnexportedFields(a reflect.Value) reflect.Value {
+	return reflect.NewAt(a.Type(), unsafe.Pointer(a.UnsafeAddr())).Elem()
+}