copied from: github.com/meh/rust-tun

src/error.rs

@@ -0,0 +1,54 @@
+//            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+//                    Version 2, December 2004
+//
+// Copyleft (ↄ) meh. <meh@schizofreni.co> | http://meh.schizofreni.co
+//
+// Everyone is permitted to copy and distribute verbatim or modified
+// copies of this license document, and changing it is allowed as long
+// as the name is changed.
+//
+//            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+//   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+//
+//  0. You just DO WHAT THE FUCK YOU WANT TO.
+
+use std::{ffi, io, num};
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("invalid configuration")]
+    InvalidConfig,
+
+    #[error("not implementated")]
+    NotImplemented,
+
+    #[error("device name too long")]
+    NameTooLong,
+
+    #[error("invalid device name")]
+    InvalidName,
+
+    #[error("invalid address")]
+    InvalidAddress,
+
+    #[error("invalid file descriptor")]
+    InvalidDescriptor,
+
+    #[error("unsuported network layer of operation")]
+    UnsupportedLayer,
+
+    #[error("invalid queues number")]
+    InvalidQueuesNumber,
+
+    #[error(transparent)]
+    Io(#[from] io::Error),
+
+    #[error(transparent)]
+    Nul(#[from] ffi::NulError),
+
+    #[error(transparent)]
+    ParseNum(#[from] num::ParseIntError),
+}
+
+pub type Result<T> = ::std::result::Result<T, Error>;