From 649a5e03814af477d2fe216f6f7d9b720face2a6 Mon Sep 17 00:00:00 2001
From: krw <krw@openbsd.org>
Date: Mon, 30 Dec 2013 03:36:17 +0000
Subject: [PATCH] Replace yet another hand-rolled list with a TAILQ.
 reject_list this time.

---
 sbin/dhclient/clparse.c  | 15 +++++++--------
 sbin/dhclient/dhclient.c |  3 ++-
 sbin/dhclient/dhcpd.h    |  6 +++---
 sbin/dhclient/options.c  |  4 ++--
 4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/sbin/dhclient/clparse.c b/sbin/dhclient/clparse.c
index eba497251eb..ca88396a261 100644
--- a/sbin/dhclient/clparse.c
+++ b/sbin/dhclient/clparse.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: clparse.c,v 1.64 2013/12/28 21:48:04 krw Exp $	*/
+/*	$OpenBSD: clparse.c,v 1.65 2013/12/30 03:36:17 krw Exp $	*/
 
 /* Parser for dhclient config and lease files. */
 
@@ -748,7 +748,7 @@ bad_flag:
 void
 parse_reject_statement(FILE *cfile)
 {
-	struct reject_elem *list;
+	struct reject_elem *elem;
 	struct in_addr addr;
 	int token;
 
@@ -759,13 +759,12 @@ parse_reject_statement(FILE *cfile)
 			return;
 		}
 
-		list = malloc(sizeof(struct reject_elem));
-		if (!list)
-			error("no memory for reject list!");
+		elem = malloc(sizeof(struct reject_elem));
+		if (!elem)
+			error("no memory for reject address!");
 
-		list->addr = addr;
-		list->next = config->reject_list;
-		config->reject_list = list;
+		elem->addr = addr;
+		TAILQ_INSERT_TAIL(&config->reject_list, elem, next);
 
 		token = next_token(NULL, cfile);
 	} while (token == ',');
diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 9bc527c72ed..0b5768d40ea 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhclient.c,v 1.280 2013/12/21 18:23:10 krw Exp $	*/
+/*	$OpenBSD: dhclient.c,v 1.281 2013/12/30 03:36:17 krw Exp $	*/
 
 /*
  * Copyright 2004 Henning Brauer <henning@openbsd.org>
@@ -456,6 +456,7 @@ main(int argc, char *argv[])
 	config = calloc(1, sizeof(*config));
 	if (config == NULL)
 		error("config calloc");
+	TAILQ_INIT(&config->reject_list);
 
 	get_ifname(argv[0]);
 	if (path_dhclient_db == NULL && asprintf(&path_dhclient_db, "%s.%s",
diff --git a/sbin/dhclient/dhcpd.h b/sbin/dhclient/dhcpd.h
index 8d6c382b23e..ef7d992f395 100644
--- a/sbin/dhclient/dhcpd.h
+++ b/sbin/dhclient/dhcpd.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhcpd.h,v 1.127 2013/12/21 18:23:10 krw Exp $	*/
+/*	$OpenBSD: dhcpd.h,v 1.128 2013/12/30 03:36:17 krw Exp $	*/
 
 /*
  * Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
@@ -89,7 +89,7 @@ struct option_data {
 };
 
 struct reject_elem {
-	struct reject_elem	*next;
+	TAILQ_ENTRY(reject_elem) next;
 	struct in_addr		 addr;
 };
 
@@ -142,7 +142,7 @@ struct client_config {
 	time_t			 backoff_cutoff;
 	enum { IGNORE, ACCEPT, PREFER }
 				 bootp_policy;
-	struct reject_elem	*reject_list;
+	TAILQ_HEAD(, reject_elem) reject_list;
 	char			*resolv_tail;
 };
 
diff --git a/sbin/dhclient/options.c b/sbin/dhclient/options.c
index be8659c4ef5..cb10ee395f0 100644
--- a/sbin/dhclient/options.c
+++ b/sbin/dhclient/options.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: options.c,v 1.64 2013/12/22 04:47:57 krw Exp $	*/
+/*	$OpenBSD: options.c,v 1.65 2013/12/30 03:36:17 krw Exp $	*/
 
 /* DHCP options parsing and reassembly. */
 
@@ -488,7 +488,7 @@ do_packet(unsigned int from_port, struct in_addr from,
 		return;
 	}
 
-	for (ap = config->reject_list; ap; ap = ap->next)
+	TAILQ_FOREACH(ap, &config->reject_list, next)
 		if (from.s_addr == ap->addr.s_addr) {
 #ifdef DEBUG
 			debug("Discarding packet from address on reject list "
-- 
2.20.1