From 303d38369a5fd2961b51bb8bbf1f0dfb739e7934 Mon Sep 17 00:00:00 2001
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Fri, 5 Mar 2004 09:17:01 +0000
Subject: [PATCH] Teach 'hostname' script how to act inside a jail.

No objections from:	mtm, arch@
---
 etc/rc.d/hostname | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/etc/rc.d/hostname b/etc/rc.d/hostname
index 56bf3c2a214b..695d3761207a 100644
--- a/etc/rc.d/hostname
+++ b/etc/rc.d/hostname
@@ -39,12 +39,20 @@ stop_cmd=":"
 
 hostname_start()
 {
-	# Set the host name if it is not already set
+	# If we are not inside a jail, set the host name if it is not already set.
+	# If we are inside a jail, set the host name even if it is already set,
+	# but first check if it is permitted.
 	#
-	if [ -z "`hostname -s`" ]; then
-		hostname ${hostname}
-		echo "Setting hostname: `hostname`."
+	if [ `$SYSCTL_N security.jail.jailed` -eq 1 ]; then
+		if [ `$SYSCTL_N security.jail.set_hostname_allowed` -eq 0 ]; then
+			return
+		fi
+	elif [ -n "`hostname -s`" ]; then
+			return
 	fi
+
+	hostname ${hostname}
+	echo "Setting hostname: `hostname`."
 }
 
 load_rc_config $name