feature(krata): rename guest to zone (#266)

crates/zone/src/lib.rs

@@ -0,0 +1,22 @@
+use std::{os::raw::c_int, time::Duration};
+
+use anyhow::Result;
+use tokio::time::sleep;
+use xenstore::{XsdClient, XsdInterface};
+
+pub mod background;
+pub mod childwait;
+pub mod exec;
+pub mod init;
+pub mod metrics;
+
+pub async fn death(code: c_int) -> Result<()> {
+    let store = XsdClient::open().await?;
+    store
+        .write_string("krata/zone/exit-code", &code.to_string())
+        .await?;
+    drop(store);
+    loop {
+        sleep(Duration::from_secs(1)).await;
+    }
+}