From 61ee862c33507f68e82af5fa0d594583d404525e Mon Sep 17 00:00:00 2001
From: claudio <claudio@openbsd.org>
Date: Thu, 17 Apr 2014 15:35:35 +0000
Subject: [PATCH] Sync show.c to what we have in netstat.c (at least steal some
 good idioms from there). OK sthen@ mpi@ jca@

---
 sbin/route/show.c | 34 ++++++++++++++++------------------
 sbin/route/show.h |  9 ++++++++-
 2 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/sbin/route/show.c b/sbin/route/show.c
index 6540970dfc3..59fe7eae26a 100644
--- a/sbin/route/show.c
+++ b/sbin/route/show.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: show.c,v 1.94 2013/07/19 20:10:23 guenther Exp $	*/
+/*	$OpenBSD: show.c,v 1.95 2014/04/17 15:35:35 claudio Exp $	*/
 /*	$NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $	*/
 
 /*
@@ -60,13 +60,6 @@ char	*any_ntoa(const struct sockaddr *);
 char	*link_print(struct sockaddr *);
 char	*label_print(struct sockaddr *);
 
-extern int nflag;
-extern int Fflag;
-extern int verbose;
-extern union sockunion so_label;
-
-#define PLEN  (LONG_BIT / 4 + 2) /* XXX this is also defined in netstat.h */
-
 #define ROUNDUP(a) \
 	((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
@@ -151,7 +144,7 @@ p_rttables(int af, u_int tableid, int hastable)
 		if (needed == 0)
 			break;
 		if ((buf = realloc(buf, needed)) == NULL)
-			err(1, "realloc");
+			err(1, NULL);
 		if (sysctl(mib, mcnt, buf, &needed, NULL, 0) == -1) {
 			if (errno == ENOMEM)
 				continue;
@@ -185,18 +178,23 @@ p_rttables(int af, u_int tableid, int hastable)
 	mib[2] = PF_KEY_V2;
 	mib[3] = NET_KEY_SPD_DUMP;
 	mib[4] = mib[5] = 0;
-
-	if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) {
-		if (errno == ENOPROTOOPT)
-			return;
-		err(1, "spd-sysctl-estimate");
-	}
-	if (needed > 0) {
-		if ((buf = malloc(needed)) == 0)
+	while (1) {
+		if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) {
+			if (errno == ENOPROTOOPT)
+				return;
+			err(1, "spd-sysctl-estimate");
+		}
+		if (needed == 0)
+			break;
+		if ((buf = realloc(buf, needed)) == NULL)
 			err(1, NULL);
-		if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1)
+		if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1) {
+			if (errno == ENOMEM)
+				continue;
 			err(1,"sysctl of spd");
+		}
 		lim = buf + needed;
+		break;
 	}
 
 	if (buf) {
diff --git a/sbin/route/show.h b/sbin/route/show.h
index 9edfb545311..ab5977a9bad 100644
--- a/sbin/route/show.h
+++ b/sbin/route/show.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: show.h,v 1.9 2010/10/11 11:45:00 claudio Exp $ */
+/*	$OpenBSD: show.h,v 1.10 2014/04/17 15:35:35 claudio Exp $ */
 
 /*
  * Copyright (c) 2004 Claudio Jeker <claudio@openbsd.org>
@@ -33,4 +33,11 @@ char	*routename(struct sockaddr *);
 char	*netname(struct sockaddr *, struct sockaddr *);
 char	*mpls_op(u_int32_t);
 
+extern int nflag;
+extern int Fflag;
+extern int verbose;
+extern union sockunion so_label;
+
+#define PLEN  (LONG_BIT / 4 + 2)
+
 #endif /* __SHOW_H__ */
-- 
2.20.1