From 29ff2b4aff0cd24ac5e6e02ed95642fdf23c433d Mon Sep 17 00:00:00 2001
From: pluknet <pluknet@FreeBSD.org>
Date: Tue, 28 Jun 2011 08:41:44 +0000
Subject: Update ifc_len field of struct ifconf passed for the ioctl
 SIOCGIFCONF32 (i.e. under COMPAT_FREEBSD32) in case ifconf() returned success
 to match the native SIOCGIFCONF behavior.

PR:		kern/158369
Reported by:	Paul Procacci <pprocacci att gmail com>
MFC after:	1 week
---
 sys/net/if.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/net/if.c b/sys/net/if.c
index b7c2ad1..a5a3a8e 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -2467,6 +2467,8 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td)
 
 			error = ifconf(SIOCGIFCONF, (void *)&ifc);
 			CURVNET_RESTORE();
+			if (error == 0)
+				ifc32->ifc_len = ifc.ifc_len;
 			return (error);
 		}
 #endif
-- 
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