From 61aff393dc414ae6650ba24a1012be0e7bcec5a0 Mon Sep 17 00:00:00 2001
From: Laszlo Papp <ext-laszlo.papp@nokia.com>
Date: Tue, 15 Mar 2011 10:33:08 +0200
Subject: Check the return value properly before passing it to any function

---
 util/ulockmgr_server.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'util')

diff --git a/util/ulockmgr_server.c b/util/ulockmgr_server.c
index 8ffdfef..583fcf9 100644
--- a/util/ulockmgr_server.c
+++ b/util/ulockmgr_server.c
@@ -366,8 +366,10 @@ int main(int argc, char *argv[])
 	}
 	cfd = 4;
 	nullfd = open("/dev/null", O_RDWR);
-	dup2(nullfd, 0);
-	dup2(nullfd, 1);
+	if (nullfd >= 0) {
+		dup2(nullfd, 0);
+		dup2(nullfd, 1);
+	}
 	close(3);
 	closefrom(5);
 	while (1) {
-- 
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