From 6f562a44b936777ea90d751a103db83f035052f0 Mon Sep 17 00:00:00 2001
From: Ray Lai <ray@cvs.openbsd.org>
Date: Tue, 2 Jun 2009 22:28:19 +0000
Subject: Set errno to EINVAL when fgets is given a non-positive size.

OK millert otto
---
 lib/libc/stdio/fgets.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'lib/libc/stdio/fgets.c')

diff --git a/lib/libc/stdio/fgets.c b/lib/libc/stdio/fgets.c
index 92fdcf78ff5..536935256be 100644
--- a/lib/libc/stdio/fgets.c
+++ b/lib/libc/stdio/fgets.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fgets.c,v 1.10 2005/08/08 08:05:36 espie Exp $ */
+/*	$OpenBSD: fgets.c,v 1.11 2009/06/02 22:28:18 ray Exp $ */
 /*-
  * Copyright (c) 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -31,6 +31,7 @@
  * SUCH DAMAGE.
  */
 
+#include <errno.h>
 #include <stdio.h>
 #include <string.h>
 #include "local.h"
@@ -48,8 +49,10 @@ fgets(char *buf, int n, FILE *fp)
 	char *s;
 	unsigned char *p, *t;
 
-	if (n <= 0)		/* sanity check */
+	if (n <= 0) {		/* sanity check */
+		errno = EINVAL;
 		return (NULL);
+	}
 
 	_SET_ORIENTATION(fp, -1);
 	s = buf;
-- 
cgit v1.2.3