Add rc.d/hostid script (turned on by default) which on first boot generates
UUID and stores it in /etc/hostid ($hostid_file) as well as sets kern.hostuuid and kern.hostid sysctls on every boot. Hostid can be reset using '/etc/rc.d/hostid reset' command. Hostid generation and setting can be turned off by setting variable hostid_enable to "NO" in /etc/rc.conf. Reviewed by: mlaier, rink, brooks, rwatson
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=168546
@ -93,6 +93,8 @@ extra_netfs_types="NO" # List of network extra filesystem types for delayed
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### Basic network and firewall/security options: ###
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hostname="" # Set this!
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hostid_enable="YES" # Set host UUID.
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hostid_file="/etc/hostid" # File with hostuuid.
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nisdomainname="NO" # Set to NIS domain if using NIS (or NO).
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dhclient_program="/sbin/dhclient" # Path to dhcp client program.
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dhclient_flags="" # Extra flags to pass to dhcp client.
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@ -14,7 +14,7 @@ FILES= DAEMON FILESYSTEMS LOGIN NETWORKING SERVERS \
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fsck ftpd \
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gbde geli geli2 \
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hcsecd \
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hostapd hostname \
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hostapd hostid hostname \
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idmapd inetd initrandom \
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ip6addrctl ip6fw ipfilter ipfs ipfw ipmon \
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ipnat ipsec ipxrouted isdnd \
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80
etc/rc.d/hostid
Normal file
80
etc/rc.d/hostid
Normal file
@ -0,0 +1,80 @@
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#!/bin/sh
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#
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# Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# PROVIDE: hostid
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# REQUIRE: root
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# BEFORE: mountcritlocal
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# KEYWORD: nojail
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. /etc/rc.subr
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name="hostid"
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start_cmd="hostid_start"
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stop_cmd=":"
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reset_cmd="hostid_reset"
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extra_commands="reset"
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rcvar="hostid_enable"
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hostid_set()
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{
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uuid=$1
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# Generate hostid based on hostuuid - take first four bytes from md5(uuid).
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id=`echo -n $uuid | md5`
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id="0x${id%????????????????????????}"
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# Set both kern.hostuuid and kern.hostid.
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echo "Setting hostuuid: ${uuid}."
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${SYSCTL_W} kern.hostuuid="${uuid}" >/dev/null
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echo "Setting hostid: ${id}."
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${SYSCTL_W} kern.hostid=${id} >/dev/null
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}
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hostid_reset()
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{
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uuid=`uuidgen`
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# Store newly generated UUID in ${hostid_file}.
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echo $uuid > ${hostid_file}
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if [ $? -ne 0 ]; then
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warn "could not store hostuuid in ${hostid_file}."
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fi
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hostid_set $uuid
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}
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hostid_start()
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{
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# If ${hostid_file} already exists, we take UUID from there.
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if [ -r ${hostid_file} ]; then
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hostid_set `cat ${hostid_file}`
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else
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# No hostid file, generate UUID.
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hostid_reset
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fi
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}
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load_rc_config $name
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run_rc_command "$1"
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