From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 22 Jun 2011 19:56:47 +0000 (-0400)
Subject: Don't allow enable/disable on metadata channel/events
X-Git-Tag: v2.0-pre1~50
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=c6485006a92b1b86fbb48c2b277732d3405295c9;p=lttng-modules.git

Don't allow enable/disable on metadata channel/events

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

diff --git a/ltt-events.c b/ltt-events.c
index a94e8f9a..42d486c1 100644
--- a/ltt-events.c
+++ b/ltt-events.c
@@ -139,6 +139,8 @@ int ltt_channel_enable(struct ltt_channel *channel)
 {
 	int old;
 
+	if (channel == channel->session->metadata)
+		return -EPERM;
 	old = xchg(&channel->enabled, 1);
 	if (old)
 		return -EEXIST;
@@ -149,6 +151,8 @@ int ltt_channel_disable(struct ltt_channel *channel)
 {
 	int old;
 
+	if (channel == channel->session->metadata)
+		return -EPERM;
 	old = xchg(&channel->enabled, 0);
 	if (!old)
 		return -EEXIST;
@@ -159,6 +163,8 @@ int ltt_event_enable(struct ltt_event *event)
 {
 	int old;
 
+	if (event->chan == event->chan->session->metadata)
+		return -EPERM;
 	old = xchg(&event->enabled, 1);
 	if (old)
 		return -EEXIST;
@@ -169,6 +175,8 @@ int ltt_event_disable(struct ltt_event *event)
 {
 	int old;
 
+	if (event->chan == event->chan->session->metadata)
+		return -EPERM;
 	old = xchg(&event->enabled, 0);
 	if (!old)
 		return -EEXIST;