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#!/bin/sh
## live-config(7) - System Configuration Components
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
#set -e
Cmdline ()
{
# Reading kernel command line
for _PARAMETER in ${LIVE_CONFIG_CMDLINE}
do
case "${_PARAMETER}" in
live-config.hostname=*|hostname=*)
LIVE_HOSTNAME="${_PARAMETER#*hostname=}"
;;
esac
done
}
Init ()
{
# Checking if package is installed or already configured
if [ -z "${LIVE_HOSTNAME}" ] || \
[ -e /var/lib/live/config/hostname ]
then
exit 0
fi
echo -n " hostname"
}
Config ()
{
# Change hostname only if it is not set
if [ ! -e /etc/hostname ] || \
grep -qs localhost\.localdomain /etc/hostname
then
# Supporting variables within hostnames
if [ -e /bin/ip ]
then
LINK="$(ip -oneline -family link address show dev eth0 | awk '{ print $13 }' | sed -e "s|:|${_IP_SEPARATOR}|g")"
INET="$(ip -oneline -family inet address show dev eth0 | awk '{ print $4 }' | sed -e "s|\.|${_IP_SEPARATOR}|g" -e 's|/.*||')"
INET6="$(ip -oneline -family inet6 address show dev eth0 | awk '{ print $4 }' | sed -e "s|:|${_IP_SEPARATOR}|g" -e 's|/.*||' -e 's|--|-|')"
eval LIVE_HOSTNAME="${LIVE_HOSTNAME}"
fi
echo "${LIVE_HOSTNAME}" > /etc/hostname
else
LIVE_HOSTNAME="$(cat /etc/hostname)"
fi
# Updating hostname in /etc/hosts
if [ -s /etc/hosts ]
then
# /etc/hosts exists but has no 127.0.0.1
if ! grep -Eq "^ *127.0.0.1" /etc/hosts
then
mv /etc/hosts /etc/hosts.tmp
echo "127.0.0.1 localhost ${LIVE_HOSTNAME}" > /etc/hosts
cat /etc/hosts.tmp >> /etc/hosts
rm -f /etc/hosts.tmp
# /etc/hosts exists and has no matching 127.0.0.1
elif ! grep -Eq "^ *127.0.0.1.*${LIVE_HOSTNAME}" /etc/hosts
then
_HOSTS="$(grep -E "^ *127.0.0.1" /etc/hosts | awk '{ $1=""; print $0 }' | sed -e 's|localhost||')"
_HOSTS="$(echo localhost ${_HOSTS} ${LIVE_HOSTNAME} | sed -e 's|^ ||' -e 's| | |g')"
sed -i -e "s|^ *127.0.0.1.*|127.0.0.1 ${_HOSTS}|" /etc/hosts
fi
else
# /etc/hosts does not exist
cat > /etc/hosts << EOF
127.0.0.1 localhost ${LIVE_HOSTNAME}
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
EOF
fi
hostname "${LIVE_HOSTNAME}" || true
# Creating state file
touch /var/lib/live/config/hostname
}
Cmdline
Init
Config
|
