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#!/bin/sh
set -e
PREREQS=""
case $1 in
prereqs) echo "${PREREQS}"; exit 0;;
esac
. /scripts/functions
PATH=/usr/sbin:/usr/bin:/sbin:/bin
# doc in klibc-utils /usr/share/doc/libklibc/README.ipconfig.gz
# example below:
#DEVICE='eth0'
#PROTO='dhcp' ## none, off, static. not present in precise
#IPV4ADDR='192.168.122.89'
#IPV4BROADCAST='192.168.122.255'
#IPV4NETMASK='255.255.255.0'
#IPV4GATEWAY='192.168.122.1'
#IPV4DNS0='192.168.122.1' ## only come from dhcp
#IPV4DNS1='0.0.0.0'
#HOSTNAME=''
#DNSDOMAIN=''
#NISDOMAIN=''
#ROOTSERVER='192.168.122.1'
#ROOTPATH=''
#filename=''
#UPTIME='21'
#DHCPLEASETIME='3600'
#DOMAINSEARCH=''
error() { echo "${0##*/}:" "$@" 1>&2; }
tmpf="/tmp/${0##*/}.ni"
{
echo "## This file is generated by cloud-initramfs-dyn-netconf"
echo "auto lo"
echo "iface lo inet loopback"
} > "$tmpf"
seen=","
for f in /run/net-*.conf /tmp/net-*.conf; do
[ -f "$f" ] || continue
dev=${f#*/net-}; dev=${dev%.conf};
# perhaps we saw this device from /run and now we're in /tmp
[ "${seen#*,${dev},}" = "${seen}" ] || continue
seen="${seen}${dev},"
DEVICE=""; PROTO=""; IPV4ADDR=""; IPV4NETMASK=""; IPV4GATEWAY="";
IPV4DNS0=""; IPV4DNS1=""; DNSDOMAIN=""; DOMAINSEARCH=""; filename="";
. "$f"
if [ -z "$DEVICE" ]; then
error "WARNING: $f had no 'DEVICE' set"
continue
fi
# ipconfig on precise does not write PROTO.
if [ -z "$PROTO" ]; then
if [ -n "$filename" ]; then
PROTO="dhcp"
else
PROTO="static"
fi
fi
echo "manual $DEVICE"
if [ "$PROTO" = "dhcp" ]; then
echo "iface $DEVICE inet dhcp"
elif [ "$PROTO" = "static" ]; then
echo "iface $DEVICE inet static"
[ -n "$IPV4ADDR" ] && printf "\t%s\n" "address $IPV4ADDR"
[ -n "$IPV4NETMASK" ] && printf "\t%s\n" "netmask $IPV4NETMASK"
[ -n "$IPV4GATEWAY" ] && printf "\t%s\n" "gateway $IPV4GATEWAY"
fi
if [ -n "$IPV4DNS0" -a "$IPV4DNS0" != "0.0.0.0" ]; then
nsline="dns-nameservers ${IPV4DNS0}"
[ -n "$IPV4DNS1" -a "$IPV4DNS1" != "0.0.0.0" ] &&
nsline="${nsline} ${IPV4DNS1}"
printf "\t%s\n" "$nsline"
fi
[ -n "$DNSDOMAIN" -o -n "$DOMAINSEARCH" ] &&
printf "\t%s\n" "dns-search ${DNSDOMAIN} ${DOMAINSEARCH}"
done >> "$tmpf"
[ -d /run/network ] || mkdir /run/network
mv "$tmpf" /run/network/dynamic-interfaces
# vi: ts=4 noexpandtab
|
