1 files changed, 18 insertions, 0 deletions
diff --git a/ctr-std/src/sys/unix/process.rs b/ctr-std/src/sys/unix/process.rs
index f058aa9..06dafc6 100644
--- a/ctr-std/src/sys/unix/process.rs
+++ b/ctr-std/src/sys/unix/process.rs
@@ -16,6 +16,11 @@ use sys::pipe::AnonPipe;
 use sys::{unsupported, Void};
 use sys_common::process::{CommandEnv, DefaultEnvKey};
 
+use libc::c_int;
+
+const EXIT_SUCCESS: c_int = 0;
+const EXIT_FAILURE: c_int = 1;
+
 ////////////////////////////////////////////////////////////////////////////////
 // Command
 ////////////////////////////////////////////////////////////////////////////////
@@ -149,3 +154,16 @@ impl Process {
         match self.0 {}
     }
 }
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+pub struct ExitCode(u8);
+
+impl ExitCode {
+    pub const SUCCESS: ExitCode = ExitCode(EXIT_SUCCESS as _);
+    pub const FAILURE: ExitCode = ExitCode(EXIT_FAILURE as _);
+
+    #[inline]
+    pub fn as_i32(&self) -> i32 {
+        self.0 as i32
+    }
+}