From 39435f913b0f2c7d451f7e6876689ca8900c6a28 Mon Sep 17 00:00:00 2001
From: Keagan McClelland <keagan.mcclelland@gmail.com>
Date: Thu, 23 Sep 2021 15:37:34 -0600
Subject: [PATCH] exclusive lock on cookie file

---
 appmgr/src/context/cli.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/appmgr/src/context/cli.rs b/appmgr/src/context/cli.rs
index 4f965cf6f..59468b049 100644
--- a/appmgr/src/context/cli.rs
+++ b/appmgr/src/context/cli.rs
@@ -41,7 +41,11 @@ pub struct CliContextSeed {
 impl Drop for CliContextSeed {
     fn drop(&mut self) {
         let tmp = format!("{}.tmp", self.cookie_path.display());
-        let mut writer = File::create(&tmp).unwrap();
+        let mut writer = fd_lock_rs::FdLock::lock(
+            File::create(&tmp).unwrap(),
+            fd_lock_rs::LockType::Exclusive,
+            true,
+        );
         let store = self.cookie_store.lock().unwrap();
         store.save_json(&mut writer).unwrap();
         writer.sync_all().unwrap();