X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-sessiond%2Fust-app.c;h=d36cf8893535a24f8583638e25f342b2e33f05b7;hb=b0a40d28e4498724b405cbcd5c468bfec3295eb0;hp=e0f907fbd0ff2d42b65f3a01fd4d33d9a33d03ee;hpb=9d697d3d9ce4cf53fe9102bf7d7b44d196f46eca;p=lttng-tools.git

diff --git a/lttng-sessiond/ust-app.c b/lttng-sessiond/ust-app.c
index e0f907fbd..d36cf8893 100644
--- a/lttng-sessiond/ust-app.c
+++ b/lttng-sessiond/ust-app.c
@@ -1270,6 +1270,64 @@ error:
 	return ret;
 }
 
+/*
+ * Disable an event in a channel and for a specific session.
+ */
+int ust_app_disable_event(struct ltt_ust_session *usess,
+		struct ltt_ust_channel *uchan, char *event_name)
+{
+	int ret = 0;
+	struct cds_lfht_iter iter, uiter;
+	struct cds_lfht_node *ua_chan_node, *ua_event_node;
+	struct ust_app *app;
+	struct ust_app_session *ua_sess;
+	struct ust_app_channel *ua_chan;
+	struct ust_app_event *ua_event;
+
+	DBG("UST app disabling event %s for all apps in channel "
+			"%s for session uid %d", event_name, uchan->name, usess->uid);
+
+	rcu_read_lock();
+
+	/* For all registered applications */
+	cds_lfht_for_each_entry(ust_app_ht, &iter, app, node) {
+		ua_sess = lookup_session_by_app(usess, app);
+		if (ua_sess == NULL) {
+			/* Next app */
+			continue;
+		}
+
+		/* Lookup channel in the ust app session */
+		ua_chan_node = hashtable_lookup(ua_sess->channels,
+				(void *)uchan->name, strlen(uchan->name), &uiter);
+		if (ua_chan_node == NULL) {
+			DBG2("Channel %s not found in session uid %d for app pid %d."
+					"Skipping", uchan->name, usess->uid, app->key.pid);
+			continue;
+		}
+		ua_chan = caa_container_of(ua_chan_node, struct ust_app_channel, node);
+
+		ua_event_node = hashtable_lookup(ua_chan->events,
+				(void *) event_name, strlen(event_name), &uiter);
+		if (ua_event_node == NULL) {
+			DBG2("Event %s not found in channel %s for app pid %d."
+					"Skipping", event_name, uchan->name, app->key.pid);
+			continue;
+		}
+		ua_event = caa_container_of(ua_event_node, struct ust_app_event, node);
+
+		ret = disable_ust_app_event(ua_sess, ua_chan, ua_event, app);
+		if (ret < 0) {
+			/* XXX: Report error someday... */
+			continue;
+		}
+	}
+
+	rcu_read_unlock();
+
+	return ret;
+}
+
 /*
  * For a specific UST session and UST channel, create the event for all
  * registered apps.