ephemeral logins

core/startos/src/util/sync.rs

@@ -0,0 +1,9 @@
+pub struct SyncMutex<T>(std::sync::Mutex<T>);
+impl<T> SyncMutex<T> {
+    pub fn new(t: T) -> Self {
+        Self(std::sync::Mutex::new(t))
+    }
+    pub fn mutate<F: FnOnce(&mut T) -> U, U>(&self, f: F) -> U {
+        f(&mut *self.0.lock().unwrap())
+    }
+}