1 files changed, 20 insertions, 1 deletions
diff --git a/apps/cassiopeia/src/error.rs b/apps/cassiopeia/src/error.rs
index 31f5414c4f86..24bbb4965494 100644
--- a/apps/cassiopeia/src/error.rs
+++ b/apps/cassiopeia/src/error.rs
@@ -1,7 +1,7 @@
 //! A set of error types for cassiopeia
 
-use std::error::Error;
 use std::fmt::{self, Display, Formatter};
+use std::{error::Error, io};
 
 /// User errors that can occur when using cassiopeia
 ///
@@ -45,6 +45,14 @@ pub enum ParseError {
     /// This error means that the structure of the parsed file is
     /// wrong, with an invalid sequence of events expressed
     User(UserError),
+    /// The requested file did not exist
+    NoSuchFile,
+    /// The file could not be read
+    BadPermissions,
+    /// The file could not be written to
+    FileNotWritable,
+    /// Other file related errors
+    FileUnknown(String),
     /// An invalid keyword was found
     BadKeyword { line: usize, tokn: String },
     /// A bad timestamp was found
@@ -70,3 +78,14 @@ impl From<UserError> for ParseError {
         ParseError::User(user)
     }
 }
+
+impl From<io::Error> for ParseError {
+    fn from(e: io::Error) -> Self {
+        use io::ErrorKind::*;
+        match e.kind() {
+            NotFound => Self::NoSuchFile,
+            PermissionDenied => Self::BadPermissions,
+            _ => Self::FileUnknown(format!("{}", e)),
+        }
+    }
+}