diff --git a/io/writer.go b/io/writer.go
new file mode 100644
index 00000000..de1b953f
--- /dev/null
+++ b/io/writer.go
@@ -0,0 +1,7 @@
+package ioz
+
+type WriteFunc func(p []byte) (n int, err error)
+
+func (f WriteFunc) Write(p []byte) (n int, err error) {
+	return f(p)
+}