From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Fri, 1 Jun 2012 21:01:13 +0000 (-0400)
Subject: Fix: ust_app_list_events should return -ENOSYS when no UST
X-Git-Tag: v2.1.0-rc1~119
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=db7c0497a78cd7a5e8a5f5858efe0a5462337507

Fix: ust_app_list_events should return -ENOSYS when no UST

Caller thinks that memory is allocated, and incorrectly dereferences a
NULL pointer if we return 0 rather than -ENOSYS.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/ust-app.h b/src/bin/lttng-sessiond/ust-app.h
index 88539879a..5d8485f3b 100644
--- a/src/bin/lttng-sessiond/ust-app.h
+++ b/src/bin/lttng-sessiond/ust-app.h
@@ -202,7 +202,7 @@ int ust_app_stop_trace_all(struct ltt_ust_session *usess)
 static inline
 int ust_app_list_events(struct lttng_event **events)
 {
-	return 0;
+	return -ENOSYS;
 }
 static inline
 int ust_app_register(struct ust_register_msg *msg, int sock)