1 files changed, 26 insertions, 0 deletions
diff --git a/libpod/define/diff.go b/libpod/define/diff.go
new file mode 100644
index 000000000..ee492eb3a
--- /dev/null
+++ b/libpod/define/diff.go
@@ -0,0 +1,26 @@
+package define
+
+// extra type to use as enum
+type DiffType uint8
+
+const (
+	// only diff containers
+	DiffContainer DiffType = 1 << iota
+	// only diff images
+	DiffImage
+	// diff both containers and images
+	DiffAll DiffType = 0b11111111
+)
+
+func (d DiffType) String() string {
+	switch d {
+	case DiffAll:
+		return "all"
+	case DiffContainer:
+		return "container"
+	case DiffImage:
+		return "image"
+	default:
+		return "unknown"
+	}
+}