From 6df067c50ad206b9b6049e0668dba60e55c33dab Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Wed, 9 Apr 2014 14:46:13 +0400
Subject: [PATCH] util: Make sure open successed

Opening /dev/null may fail, check for ret code.

CID 1168167

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
---
 util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/util.c b/util.c
index 32860d34a..81f174166 100644
--- a/util.c
+++ b/util.c
@@ -597,6 +597,10 @@ int cr_daemon(int nochdir, int noclose)
 		int fd;
 
 		fd = open("/dev/null", O_RDWR);
+		if (fd < 0) {
+			pr_perror("Can't open /dev/null");
+			return -1;
+		}
 		dup2(fd, 0);
 		dup2(fd, 1);
 		dup2(fd, 2);