diff --git a/activation/files.go b/activation/files.go
new file mode 100644
index 00000000..d597be26
--- /dev/null
+++ b/activation/files.go
@@ -0,0 +1,29 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// 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 activation
+
+import "os"
+
+// FilesWithNames maps fd names to a set of os.File pointers.
+func FilesWithNames() map[string][]*os.File {
+	files := Files(true)
+	filesWithNames := map[string][]*os.File{}
+
+	for _, f := range files {
+		filesWithNames[f.Name()] = append(filesWithNames[f.Name()], f)
+	}
+
+	return filesWithNames
+}