Vendor things

third-party/vendor/errno/src/hermit.rs

@@ -0,0 +1,32 @@
+//! Implementation of `errno` functionality for RustyHermit.
+//!
+//! Currently, the error handling in RustyHermit isn't clearly
+//! defined. At the current stage of RustyHermit, only a placeholder
+//! is provided to be compatible to the classical errno interface.
+
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use crate::Errno;
+
+pub fn with_description<F, T>(_err: Errno, callback: F) -> T
+where
+    F: FnOnce(Result<&str, Errno>) -> T,
+{
+    callback(Ok("unknown error"))
+}
+
+pub const STRERROR_NAME: &str = "strerror_r";
+
+pub fn errno() -> Errno {
+    Errno(0)
+}
+
+pub fn set_errno(_: Errno) {}