From 55ff65210b0039c9642bc530a62a8874015c4d78 Mon Sep 17 00:00:00 2001
From: naddy <>
Date: Tue, 29 Jun 2010 04:09:34 +0000
Subject: [PATCH] Make unsetenv(NULL) and unsetenv("") give EINVAL, per POSIX. 
 ok deraadt@

---
 src/lib/libc/stdlib/setenv.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lib/libc/stdlib/setenv.c b/src/lib/libc/stdlib/setenv.c
index 2e882cdb..89d1e889 100644
--- a/src/lib/libc/stdlib/setenv.c
+++ b/src/lib/libc/stdlib/setenv.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: setenv.c,v 1.11 2009/06/04 20:39:13 millert Exp $ */
+/*	$OpenBSD: setenv.c,v 1.12 2010/06/29 04:09:34 naddy Exp $ */
 /*
  * Copyright (c) 1987 Regents of the University of California.
  * All rights reserved.
@@ -145,6 +145,10 @@ unsetenv(const char *name)
 	const char *np;
 	int offset;
 
+	if (!name || !*name) {
+		errno = EINVAL;
+		return (-1);
+	}
 	for (np = name; *np && *np != '='; ++np)
 		;
 	if (*np) {