Introduce ErrorKind::Interrupted variant

For (better? or) worse the EINTR error is typically treated somewhat
specially by clients. As such, it seems reasonable for us to expose it
properly as opposed to just capturing it as "other".
Introduce the ErrorKind::Interrupted variant to allow for that.

Signed-off-by: Daniel Müller <[email protected]>

libbpf-rs/src/error.rs

@@ -124,6 +124,7 @@ impl ErrorImpl {
                 io::ErrorKind::InvalidData => ErrorKind::InvalidData,
                 io::ErrorKind::TimedOut => ErrorKind::TimedOut,
                 io::ErrorKind::WriteZero => ErrorKind::WriteZero,
+                io::ErrorKind::Interrupted => ErrorKind::Interrupted,
                 io::ErrorKind::Unsupported => ErrorKind::Unsupported,
                 io::ErrorKind::UnexpectedEof => ErrorKind::UnexpectedEof,
                 io::ErrorKind::OutOfMemory => ErrorKind::OutOfMemory,
@@ -242,6 +243,10 @@ pub enum ErrorKind {
     /// An error returned when an operation could not be completed
     /// because a call to [`write`] returned [`Ok(0)`].
     WriteZero,
+    /// This operation was interrupted.
+    ///
+    /// Interrupted operations can typically be retried.
+    Interrupted,
     /// This operation is unsupported on this platform.
     Unsupported,
     /// An error returned when an operation could not be completed