alnyan/yggdrasil: add ExitStatusExt

library/std/src/os/yggdrasil/process.rs

@@ -1,9 +1,9 @@
 #![stable(feature = "os", since = "1.0.0")]
 
-use crate::process::Command;
+use crate::process::{Command, ExitStatus};
 use crate::sealed::Sealed;
-use crate::sys_common::AsInnerMut;
-use yggdrasil_rt::io::RawFd;
+use crate::sys_common::{AsInner, AsInnerMut};
+use yggdrasil_rt::{io::RawFd, process::Signal};
 
 #[unstable(feature = "yggdrasil_os", issue = "none")]
 pub trait CommandExt: Sealed {
@@ -14,6 +14,12 @@ pub trait CommandExt: Sealed {
     unsafe fn gain_terminal<F: Into<RawFd>>(&mut self, fd: F) -> &mut Command;
 }
 
+#[unstable(feature = "yggdrasil_os", issue = "none")]
+pub trait ExitStatusExt: Sealed {
+    #[unstable(feature = "yggdrasil_os", issue = "none")]
+    fn signal(&self) -> Option<Signal>;
+}
+
 #[unstable(feature = "yggdrasil_os", issue = "none")]
 impl CommandExt for Command {
     fn process_group(&mut self, pgroup: u32) -> &mut Command {
@@ -26,3 +32,10 @@ impl CommandExt for Command {
         self
     }
 }
+
+#[unstable(feature = "yggdrasil_os", issue = "none")]
+impl ExitStatusExt for ExitStatus {
+    fn signal(&self) -> Option<Signal> {
+        self.as_inner().signal()
+    }
+}

library/std/src/sys/yggdrasil/process.rs

@@ -150,7 +150,17 @@ impl ExitStatus {
     }
 
     pub fn code(&self) -> Option<i32> {
-        Some(i32::from(self.0))
+        match self.0 {
+            OsExitCode::Exited(code) => Some(code),
+            _ => None,
+        }
+    }
+
+    pub fn signal(&self) -> Option<OsSignal> {
+        match self.0 {
+            OsExitCode::BySignal(sig) => Some(sig),
+            _ => None,
+        }
     }
 }