From e992c4c4d823dae494a90ea0141f763b4f5d4df1 Mon Sep 17 00:00:00 2001
From: Michael Jerris <mike@jerris.com>
Date: Mon, 2 Jun 2014 14:10:59 +0000
Subject: [PATCH] CID:1216560 Unchecked return value from ioctl

---
 libs/esl/fs_cli.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libs/esl/fs_cli.c b/libs/esl/fs_cli.c
index b7b764427d..55b299b570 100644
--- a/libs/esl/fs_cli.c
+++ b/libs/esl/fs_cli.c
@@ -139,10 +139,10 @@ static void screen_size(int *x, int *y)
 
 #elif defined(TIOCGWINSZ)
 	struct winsize w;
-	ioctl(0, TIOCGWINSZ, &w);
-
-	if (x) *x = w.ws_col;
-	if (y) *y = w.ws_row;
+	if ( (ioctl(0, TIOCGWINSZ, &w)) >= 0 ) {
+		if (x) *x = w.ws_col;
+		if (y) *y = w.ws_row;
+	}
 #else
 	if (x) *x = 80;
 	if (y) *y = 24;