1#!/bin/sh
2#
3# Copyright (c) 2003 The FreeBSD Project. All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26#
27
28# PROVIDE: hostname
29# REQUIRE: FILESYSTEMS
30# BEFORE:  netif
31
32. /etc/rc.subr
33. /etc/network.subr
34
35name="hostname"
36desc="Set the system\'s hostname"
37start_cmd="hostname_start"
38stop_cmd=":"
39
40hostname_start()
41{
42	# If we are not inside a jail, set the host name.
43	# If we are inside a jail, set the host name if it is permitted.
44	#
45	if [ `$SYSCTL_N security.jail.jailed` -eq 1 ]; then
46		if [ `$SYSCTL_N security.jail.set_hostname_allowed` -eq 0 ]; then
47			return
48		fi
49	else
50		# If we're not in a jail and rc.conf doesn't specify a
51		# hostname, see if we can get one from kenv.
52		#
53		if [ -z "${hostname}" -a \
54		    -n "`/bin/kenv dhcp.host-name 2> /dev/null`" ]; then
55			hostname=`/bin/kenv dhcp.host-name`
56		fi
57	fi
58
59	# Have we got a hostname yet?
60	#
61	if [ -z "${hostname}" ]; then
62		# Null hostname is probably OK if DHCP is in use,
63		# or when hostname is already set (common for jails).
64		#
65		if [ -z "`list_net_interfaces dhcp`" -a \
66		     -z "`/bin/hostname`" ]; then
67			warn "\$hostname is not set -- see rc.conf(5)."
68		fi
69		return
70	fi
71
72	# All right, it is safe to invoke hostname(1) now.
73	#
74	startmsg -n "Setting hostname: ${hostname}"
75	/bin/hostname "${hostname}"
76	startmsg '.'
77}
78
79load_rc_config $name
80
81# doesn't make sense to run in a svcj: config setting
82hostname_svcj="NO"
83
84run_rc_command "$1"
85