Sync: handle exit file

Make sure `Sync()` handles state transitions and exit codes correctly.
The function was only being called when batching which could render
containers in an unusable state when running concurrently with other
state-altering functions/commands since the state must be re-read from
the database before acting upon it.

Fixes: #14761
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

libpod/container_api.go

@@ -761,19 +761,8 @@ func (c *Container) Sync() error {
 		defer c.lock.Unlock()
 	}
 
-	// If runtime knows about the container, update its status in runtime
+	if err := c.syncContainer(); err != nil {
-	// And then save back to disk
+		return err
-	if c.ensureState(define.ContainerStateCreated, define.ContainerStateRunning, define.ContainerStatePaused, define.ContainerStateStopped, define.ContainerStateStopping) {
-		oldState := c.state.State
-		if err := c.ociRuntime.UpdateContainerStatus(c); err != nil {
-			return err
-		}
-		// Only save back to DB if state changed
-		if c.state.State != oldState {
-			if err := c.save(); err != nil {
-				return err
-			}
-		}
 	}
 
 	defer c.newContainerEvent(events.Sync)

test/system/130-kill.bats

@@ -130,4 +130,14 @@ load helpers
     is "$output" $cname
 }
 
+@test "podman kill - concurrent stop" {
+    # 14761 - concurrent kill/stop must record the exit code
+    random_name=$(random_string 10)
+    run_podman run -d --replace --name=$random_name alpine sh -c "trap 'echo Received SIGTERM, ignoring' SIGTERM; echo READY; while :; do sleep 0.2; done"
+    $PODMAN stop -t 1 $random_name &
+    run_podman kill $random_name
+    run_podman wait $random_name
+    run_podman rm -f $random_name
+}
+
 # vim: filetype=sh