Add UST version validation

[lttng-tools.git] / src / bin / lttng-sessiond / main.c

diff --git a/src/bin/lttng-sessiond/main.c b/src/bin/lttng-sessiond/main.c
index e1d50974bfc2f3c220fd7cf219e6145b005f5ae4..886456a0ce8ce56f37867fd2a7b04871f5e813fa 100644 (file)
--- a/src/bin/lttng-sessiond/main.c
+++ b/src/bin/lttng-sessiond/main.c
@@ -1110,10 +1110,16 @@ static void *thread_manage_apps(void *data)
                                        }
 
                                        /*
-                                        * Add channel(s) and event(s) to newly registered apps
-                                        * from lttng global UST domain.
+                                        * Validate UST version compatibility.
                                         */
-                                       update_ust_app(ust_cmd.sock);
+                                       ret = ust_app_validate_version(ust_cmd.sock);
+                                       if (ret >= 0) {
+                                               /*
+                                                * Add channel(s) and event(s) to newly registered apps
+                                                * from lttng global UST domain.
+                                                */
+                                               update_ust_app(ust_cmd.sock);
+                                       }
 
                                        ret = ust_app_register_done(ust_cmd.sock);
                                        if (ret < 0) {