1 files changed, 9 insertions, 0 deletions
diff --git a/src/error.rs b/src/error.rs
index e891da2..839c37a 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -19,6 +19,7 @@
 
 use std::fmt;
 use std::io;
+use std::path;
 use std::str;
 use std::string;
 
@@ -47,6 +48,7 @@ pub enum Error {
   NitrokeyError(Option<&'static str>, nitrokey::Error),
   Utf8Error(str::Utf8Error),
   Error(String),
+  ExtensionFailed(path::PathBuf, Option<i32>),
 }
 
 impl TryInto<nitrokey::Error> for Error {
@@ -113,6 +115,13 @@ impl fmt::Display for Error {
       Error::Utf8Error(_) => write!(f, "Encountered UTF-8 conversion error"),
       Error::IoError(ref e) => write!(f, "IO error: {}", e),
       Error::Error(ref e) => write!(f, "{}", e),
+      Error::ExtensionFailed(ref path, rc) => {
+        write!(f, "Extension {} failed", path.to_string_lossy())?;
+        if let Some(rc) = rc {
+          write!(f, " with exit code {}", rc)?;
+        }
+        Ok(())
+      }
     }
   }
 }