diff --git a/ioutils/temp_unix.go b/ioutils/temp_unix.go
new file mode 100644
index 0000000..1539ad2
--- /dev/null
+++ b/ioutils/temp_unix.go
@@ -0,0 +1,10 @@
+// +build !windows
+
+package ioutils
+
+import "io/ioutil"
+
+// TempDir on Unix systems is equivalent to ioutil.TempDir.
+func TempDir(dir, prefix string) (string, error) {
+	return ioutil.TempDir(dir, prefix)
+}
diff --git a/ioutils/temp_windows.go b/ioutils/temp_windows.go
new file mode 100644
index 0000000..c258e5f
--- /dev/null
+++ b/ioutils/temp_windows.go
@@ -0,0 +1,18 @@
+// +build windows
+
+package ioutils
+
+import (
+	"io/ioutil"
+
+	"github.com/docker/docker/pkg/longpath"
+)
+
+// TempDir is the equivalent of ioutil.TempDir, except that the result is in Windows longpath format.
+func TempDir(dir, prefix string) (string, error) {
+	tempDir, err := ioutil.TempDir(dir, prefix)
+	if err != nil {
+		return "", err
+	}
+	return longpath.AddPrefix(tempDir), nil
+}