xref: /freebsd/libexec/rc/rc.d/hostid_save (revision 1d386b48a555f61cb7325543adbbb5c3f3407a66)
1#!/bin/sh
2#
3# $FreeBSD$
4#
5
6# PROVIDE: hostid_save
7# REQUIRE: hostid root
8# KEYWORD: nojail
9
10. /etc/rc.subr
11
12name="hostid_save"
13desc="Save unique host ID to disk"
14start_cmd="hostid_save"
15stop_cmd=":"
16rcvar="hostid_enable"
17
18hostid_machine_id()
19{
20	local IFS
21
22	IFS=-
23	set -- ${current_hostid}
24	IFS=
25	current_machine_id=$*
26}
27
28hostid_save()
29{
30	current_hostid=`$SYSCTL_N kern.hostuuid`
31
32	read saved_hostid 2>/dev/null < ${hostid_file}
33	if [ "${saved_hostid}" != "${current_hostid}" ]; then
34		echo "${current_hostid}" > ${hostid_file} ||
35			warn "could not store hostuuid in ${hostid_file}."
36	fi
37
38	hostid_machine_id
39
40	read saved_machine_id 2>/dev/null < ${machine_id_file}
41	if [ "${saved_machine_id}" != "${current_machine_id}" ]; then
42		echo "${current_machine_id}" > ${machine_id_file} ||
43			warn "could not store hostuuid in ${machine_id_file}."
44	fi
45}
46
47load_rc_config $name
48run_rc_command "$1"
49