From 09c249a1fb692a33d059e63a2db52e46c8caaf1a Mon Sep 17 00:00:00 2001
From: stsp <stsp@openbsd.org>
Date: Sun, 12 Aug 2018 18:33:55 +0000
Subject: [PATCH] Make ifconfig's -joinlist command work as advertised. ok
 deraadt phessler

---
 sbin/ifconfig/ifconfig.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/sbin/ifconfig/ifconfig.c b/sbin/ifconfig/ifconfig.c
index 7a89c26dadb..6bc7276ff5e 100644
--- a/sbin/ifconfig/ifconfig.c
+++ b/sbin/ifconfig/ifconfig.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ifconfig.c,v 1.373 2018/08/11 09:18:49 benno Exp $	*/
+/*	$OpenBSD: ifconfig.c,v 1.374 2018/08/12 18:33:55 stsp Exp $	*/
 /*	$NetBSD: ifconfig.c,v 1.40 1997/10/01 02:19:43 enami Exp $	*/
 
 /*
@@ -1707,23 +1707,16 @@ delifjoin(const char *val, int d)
 	len = 0;
 	join.i_flags |= IEEE80211_JOIN_DEL;
 
-	if (val == NULL) {
+	if (d == -1) {
 		ifr.ifr_data = (caddr_t)&join;
 		if (ioctl(s, SIOCS80211JOIN, (caddr_t)&ifr) < 0)
 			warn("SIOCS80211JOIN");
 		return;
 	}
 
-	if (d != 0) {
-		/* no network id is especially desired */
-		memset(&join, 0, sizeof(join));
-		len = 0;
-	} else {
-		len = sizeof(join.i_nwid);
-		if (val != NULL &&
-		    get_string(val, NULL, join.i_nwid, &len) == NULL)
-			return;
-	}
+	len = sizeof(join.i_nwid);
+	if (get_string(val, NULL, join.i_nwid, &len) == NULL)
+		return;
 	join.i_len = len;
 	(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 	ifr.ifr_data = (caddr_t)&join;
-- 
2.20.1