1 files changed, 18 insertions, 0 deletions
diff --git a/src/device.rs b/src/device.rs
index e047975..792ac2f 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -33,6 +33,24 @@ impl fmt::Display for Model {
     }
 }
 
+/// The access mode of a volume on the Nitrokey Storage.
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum VolumeMode {
+    /// A read-only volume.
+    ReadOnly,
+    /// A read-write volume.
+    ReadWrite,
+}
+
+impl fmt::Display for VolumeMode {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self {
+            VolumeMode::ReadOnly => f.write_str("read-only"),
+            VolumeMode::ReadWrite => f.write_str("read-write"),
+        }
+    }
+}
+
 /// A wrapper for a Nitrokey device of unknown type.
 ///
 /// Use the function [`connect`][] to obtain a wrapped instance.  The wrapper implements all traits