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#!/sbin/runscript
# Copyright 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.
extra_commands="reset"
hostid_file=${hostid_file:-/etc/hostid}
depend()
{
need root
before devd net
keywords nojail
}
_set()
{
local id=0
if [ -n "$1" ]; then
id=$(echo "$1" | md5)
id="0x${id%????????????????????????}"
fi
ebegin "Setting Host ID: ${id}"
sysctl -w kern.hostid="${id}" >/dev/null
eend $? || return 1
if sysctl -n kern.hostuuid >/dev/null 2>&1; then
[ -n "$1" ] && id=$1
ebegin "Setting Host UUID: ${id}"
sysctl kern.hostuuid="${id}" >/dev/null
eend $? || return 1
fi
}
# First we check to see if there is a system UUID
# If so then we use that and erase the hostid file,
# otherwise we generate a random UUID.
reset()
{
local uuid=$(kenv smbios.system.uuid 2>/dev/null)
local x="[0-9a-f]"
local y="${x}${x}${x}${x}"
case "${uuid}" in
${y}${y}-${y}-${y}-${y}-${y}${y}${y});;
*) uuid=;;
esac
if [ -n "${uuid}" ]; then
rm -f "${hostid_file}"
else
uuid=$(uuidgen)
if [ -z "${uuid}" ]; then
eerror "Unable to generate a UUID"
return 1
fi
if ! echo "${uuid}" > "${hostid_file}"; then
eerror "Failed to store UUID in \`${hostid_file}'"
return 1
fi
fi
_set "${uuid}"
}
start()
{
if [ -r "${hostid_file}" ]; then
_set $(cat "${hostid_file}")
else
reset
fi
}
stop()
{
_set
}
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