hostname revision 197947
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 197947 2009-10-10 22:17:03Z dougb $ 27# 28 29# PROVIDE: hostname 30# REQUIRE: FILESYSTEMS 31# BEFORE: netif 32 33. /etc/rc.subr 34. /etc/network.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 "${hostname}" -a \ 57 -n "`/bin/kenv dhcp.host-name 2> /dev/null`" ]; then 58 hostname=`/bin/kenv dhcp.host-name` 59 fi 60 fi 61 62 # Have we got a hostname yet? 63 # 64 if [ -z "${hostname}" ]; then 65 # Null hostname is probably OK if DHCP is in use. 66 # 67 if [ -z "`list_net_interfaces dhcp`" ]; then 68 warn "\$hostname is not set -- see ${rcvar_manpage}." 69 fi 70 return 71 fi 72 73 # All right, it is safe to invoke hostname(1) now. 74 # 75 check_startmsgs && echo -n "Setting hostname: ${hostname}" 76 /bin/hostname "${hostname}" 77 check_startmsgs && echo '.' 78} 79 80load_rc_config $name 81run_rc_command "$1" 82