1 files changed, 26 insertions, 0 deletions
diff --git a/library/std/src/sys/cloudabi/os.rs b/library/std/src/sys/cloudabi/os.rs
new file mode 100644
index 00000000000..326faaa852a
--- /dev/null
+++ b/library/std/src/sys/cloudabi/os.rs
@@ -0,0 +1,26 @@
+use crate::ffi::CStr;
+use crate::str;
+
+use libc::c_int;
+
+pub use crate::sys::cloudabi::shims::os::*;
+
+pub fn errno() -> i32 {
+    extern "C" {
+        #[thread_local]
+        static errno: c_int;
+    }
+
+    unsafe { errno as i32 }
+}
+
+/// Gets a detailed string description for the given error number.
+pub fn error_string(errno: i32) -> String {
+    // cloudlibc's strerror() is guaranteed to be thread-safe. There is
+    // thus no need to use strerror_r().
+    str::from_utf8(unsafe { CStr::from_ptr(libc::strerror(errno)) }.to_bytes()).unwrap().to_owned()
+}
+
+pub fn exit(code: i32) -> ! {
+    unsafe { libc::exit(code as c_int) }
+}