From: Ivana Hutarova Varekova <varekova@redhat.com>
Date: Tue, 10 Aug 2010 07:58:41 +0000 (+0530)
Subject: add the return value check in lssubsys I
X-Git-Tag: v0.37.1~53^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebf547c65cf337b6fc0f0e1ebae492767f3f3f28;p=thirdparty%2Flibcgroup.git

add the return value check in lssubsys I

This patch add one return value check for lssubsys

Signed-off-by: Ivana Hutarova Varekova <varekova@redhat.com>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-By: Jan Safranek <jsafrane@redhat.com>
---

diff --git a/src/tools/lssubsys.c b/src/tools/lssubsys.c
index 306d4e0e..89d02290 100644
--- a/src/tools/lssubsys.c
+++ b/src/tools/lssubsys.c
@@ -60,6 +60,11 @@ static int print_controller(cont_name_t cont_name, int flags)
 	int output = 0;
 
 	ret = cgroup_get_controller_begin(&handle, &controller);
+	if (ret != 0) {
+		fprintf(stderr, "cannot read controller data: %s\n",
+			cgroup_strerror(ret));
+		return ret;
+	}
 
 	path[0] = '\0';
 	name[0] = '\0';