Add tevent_req_notify_callback

This is necessary for requests that have multiple results. Examples would be
SMBEcho and ldap_search.
(cherry picked from commit c6f39b46a7b0505331612a1bee15a82f97009f0d)
(cherry picked from commit 8d988b165d373d074b8be321bcc9c20a8e85a6fc)

2 files changed, 13 insertions, 4 deletions

diff --git a/lib/tevent/tevent.h b/lib/tevent/tevent.h
index 6c5df6321a5..2cbd175e73f 100644
--- a/lib/tevent/tevent.h
+++ b/lib/tevent/tevent.h
@@ -252,6 +252,10 @@ bool tevent_req_set_endtime(struct tevent_req *req,
 			    struct tevent_context *ev,
 			    struct timeval endtime);
 
+void _tevent_req_notify_callback(struct tevent_req *req, const char *location);
+#define tevent_req_notify_callback(req)		\
+	_tevent_req_notify_callback(req, __location__)
+
 void _tevent_req_done(struct tevent_req *req,
 		      const char *location);
 #define tevent_req_done(req) \
diff --git a/lib/tevent/tevent_req.c b/lib/tevent/tevent_req.c
index 01700006eb9..541f93f99c3 100644
--- a/lib/tevent/tevent_req.c
+++ b/lib/tevent/tevent_req.c
@@ -117,17 +117,22 @@ struct tevent_req *_tevent_req_create(TALLOC_CTX *mem_ctx,
 	return req;
 }
 
-static void tevent_req_finish(struct tevent_req *req,
-			      enum tevent_req_state state,
-			      const char *location)
+void _tevent_req_notify_callback(struct tevent_req *req, const char *location)
 {
-	req->internal.state = state;
 	req->internal.finish_location = location;
 	if (req->async.fn != NULL) {
 		req->async.fn(req);
 	}
 }
 
+static void tevent_req_finish(struct tevent_req *req,
+			      enum tevent_req_state state,
+			      const char *location)
+{
+	req->internal.state = state;
+	_tevent_req_notify_callback(req, location);
+}
+
 /**
  * @brief An async request has successfully finished
  * @param[in] req	The finished request