hostname revision 127744 
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# $FreeBSD: head/etc/rc.d/hostname 127744 2004-04-02 12:18:40Z krion $
27#
28
29# PROVIDE: hostname
30# REQUIRE: mountcritlocal
31# BEFORE:  netif
32# KEYWORD: FreeBSD
33
34. /etc/rc.subr
35
36name="hostname"
37start_cmd="hostname_start"
38stop_cmd=":"
39
40hostname_start()
41{
42	# If we are not inside a jail, set the host name if it is not already set.
43	# If we are inside a jail, set the host name even if it is already set,
44	# but first check if it is permitted.
45	#
46	if [ `$SYSCTL_N security.jail.jailed` -eq 1 ]; then
47		if [ `$SYSCTL_N security.jail.set_hostname_allowed` -eq 0 ]; then
48			return
49		fi
50	elif [ -n "`/bin/hostname -s`" ]; then
51		return
52	else
53		# If we're not in a jail and rc.conf doesn't specify a
54		# hostname, see if we can get one from kenv.
55		#
56		if [ -z "${hostname}" -a \
57		    -n "`/bin/kenv dhcp.host-name 2> /dev/null`" ]; then
58			hostname=`/bin/kenv dhcp.host-name`
59		fi
60	fi
61
62	/bin/hostname ${hostname}
63	echo "Setting hostname: `hostname`."
64}
65
66load_rc_config $name
67run_rc_command "$1"
68