diff --git a/libblkid/mangle.h b/libblkid/mangle.h
new file mode 100644
index 0000000..ec492b5
--- /dev/null
+++ b/libblkid/mangle.h
@@ -0,0 +1,26 @@
+#ifndef UTIL_LINUX_MANGLE_H
+#define UTIL_LINUX_MANGLE_H
+
+/*
+ * Functions for \oct encoding used in mtab/fstab/swaps/etc.
+ */
+
+extern char *mangle(const char *s);
+
+extern void unmangle_to_buffer(const char *s, char *buf, size_t len);
+void unhexmangle_to_buffer(const char *s, char *buf, size_t len);
+
+extern char *unmangle(const char *s, char **end);
+
+static inline void unmangle_string(char *s)
+{
+	unmangle_to_buffer(s, s, strlen(s) + 1);
+}
+
+static inline void unhexmangle_string(char *s)
+{
+	unhexmangle_to_buffer(s, s, strlen(s) + 1);
+}
+
+#endif /* UTIL_LINUX_MANGLE_H */
+