diff --git a/vendor/go.etcd.io/etcd/pkg/ioutil/readcloser.go b/vendor/go.etcd.io/etcd/pkg/ioutil/readcloser.go
new file mode 100644
index 0000000..d3efcfe
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/pkg/ioutil/readcloser.go
@@ -0,0 +1,66 @@
+// Copyright 2015 The etcd 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 ioutil
+
+import (
+	"fmt"
+	"io"
+)
+
+// ReaderAndCloser implements io.ReadCloser interface by combining
+// reader and closer together.
+type ReaderAndCloser struct {
+	io.Reader
+	io.Closer
+}
+
+var (
+	ErrShortRead = fmt.Errorf("ioutil: short read")
+	ErrExpectEOF = fmt.Errorf("ioutil: expect EOF")
+)
+
+// NewExactReadCloser returns a ReadCloser that returns errors if the underlying
+// reader does not read back exactly the requested number of bytes.
+func NewExactReadCloser(rc io.ReadCloser, totalBytes int64) io.ReadCloser {
+	return &exactReadCloser{rc: rc, totalBytes: totalBytes}
+}
+
+type exactReadCloser struct {
+	rc         io.ReadCloser
+	br         int64
+	totalBytes int64
+}
+
+func (e *exactReadCloser) Read(p []byte) (int, error) {
+	n, err := e.rc.Read(p)
+	e.br += int64(n)
+	if e.br > e.totalBytes {
+		return 0, ErrExpectEOF
+	}
+	if e.br < e.totalBytes && n == 0 {
+		return 0, ErrShortRead
+	}
+	return n, err
+}
+
+func (e *exactReadCloser) Close() error {
+	if err := e.rc.Close(); err != nil {
+		return err
+	}
+	if e.br < e.totalBytes {
+		return ErrShortRead
+	}
+	return nil
+}