Add more from the std

crates/std/src/sys/io/error/generic.rs

@@ -0,0 +1,15 @@
+pub fn errno() -> i32 {
+    0
+}
+
+pub fn is_interrupted(_code: i32) -> bool {
+    false
+}
+
+pub fn decode_error_kind(_code: i32) -> crate::io::ErrorKind {
+    crate::io::ErrorKind::Uncategorized
+}
+
+pub fn error_string(_errno: i32) -> String {
+    "operation successful".to_string()
+}