Drop the util package.

pkg/fs/realfs.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2018 The Kubernetes 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 fs
+
+import (
+	"io/ioutil"
+	"os"
+)
+
+var _ FileSystem = realFS{}
+
+// realFS implements FileSystem using the local filesystem.
+type realFS struct{}
+
+// MakeRealFS makes an instance of realFS.
+func MakeRealFS() FileSystem {
+	return realFS{}
+}
+
+// Create delegates to os.Create.
+func (realFS) Create(name string) (File, error) { return os.Create(name) }
+
+// Mkdir delegates to os.Mkdir.
+func (realFS) Mkdir(name string, perm os.FileMode) error { return os.Mkdir(name, perm) }
+
+// Open delegates to os.Open.
+func (realFS) Open(name string) (File, error) { return os.Open(name) }
+
+// Stat delegates to os.Stat.
+func (realFS) Stat(name string) (os.FileInfo, error) { return os.Stat(name) }
+
+// ReadFile delegates to ioutil.ReadFile.
+func (realFS) ReadFile(name string) ([]byte, error) { return ioutil.ReadFile(name) }
+
+// WriteFile delegates to ioutil.WriteFile with read/write permissions.
+func (realFS) WriteFile(name string, c []byte) error {
+	return ioutil.WriteFile(name, c, 0666)
+}