Add missing mappings for ENOTSUP and EOPNOTSUPP error codes

Author: marc0246

src/helpers.rs

@@ -60,7 +60,6 @@ const UNIX_IO_ERROR_TABLE: &[(&str, std::io::ErrorKind)] = {
         ("ENOENT", NotFound),
         ("ENOMEM", OutOfMemory),
         ("ENOSPC", StorageFull),
-        ("ENOSYS", Unsupported),
         ("EMLINK", TooManyLinks),
         ("ENAMETOOLONG", InvalidFilename),
         ("ENETDOWN", NetworkDown),
@@ -75,12 +74,15 @@ const UNIX_IO_ERROR_TABLE: &[(&str, std::io::ErrorKind)] = {
         ("ETIMEDOUT", TimedOut),
         ("ETXTBSY", ExecutableFileBusy),
         ("EXDEV", CrossesDevices),
-        // The following have two valid options. We have both for the forwards mapping; only the
-        // first one will be used for the backwards mapping.
+        // The following have multiple valid options. We have all of them for the forwards mapping;
+        // only the first one will be used for the backwards mapping.
         ("EPERM", PermissionDenied),
         ("EACCES", PermissionDenied),
         ("EWOULDBLOCK", WouldBlock),
         ("EAGAIN", WouldBlock),
+        ("ENOTSUP", Unsupported),
+        ("EOPNOTSUPP", Unsupported),
+        ("ENOSYS", Unsupported),
     ]
 };
 // This mapping should match `decode_error_kind` in