/usr/lib/fai/get-boot-info is in fai-client 5.0.3ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 | #! /bin/bash
#*********************************************************************
#
# bootinfo -- get boot information via DHCP protocol
#
# This script is part of FAI (Fully Automatic Installation)
# (c) 2003-2014 by Thomas Lange, lange@informatik.uni-koeln.de
# Universitaet zu Koeln
#
#*********************************************************************
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# A copy of the GNU General Public License is available as
# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html. You
# can also obtain it by writing to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#*********************************************************************
# this script writes received information to $LOGDIR/boot.log
bootlog=$LOGDIR/boot.log
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
netdevice_info() {
# devices that are running
netdevices_up=$(ip link show up | grep "^[1-9$].*LOWER_UP" | cut -d : -f 2 | cut -d ' ' -f 2 | grep -v "^lo" | sort | uniq| tr '\n' ' ')
# netdevices is the list of ethernet devices which will be used for bootpc (maybe dhcp)
# if not defined, use boot messages to determine network devices
[ -n "$netdevices" ] || netdevices=$netdevices_up
# some network driver do not echo eth0,..; they are not detected
netdevices_all=$(dmesg| perl -ne 'print $&,"\n" if m/\beth[0-9]+\b/')
tmp=$(ip link | grep "^[1-9]" | cut -d : -f 2 | cut -d ' ' -f 2 | grep "^eth")
netdevices_all="$netdevices_all $tmp"
netdevices_all=$(for dev in $netdevices_all; do echo $dev; done| sort | uniq| tr '\n' ' ')
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
get_dhcp_info() {
if [ $boot -eq 1 ]; then
return
fi
boot=1
cat > $bootlog <<-EOF
netdevices_all="$netdevices_all"
netdevices_up="$netdevices_up"
netdevices="$netdevices"
EOF
dhclient -lf /dev/null -cf /usr/share/fai/dhclient-fai.conf -sf /usr/share/fai/dhclient-fai-script $netdevices >>$bootlog 2> $LOGDIR/dhclient.log
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
setnet() {
# get network parameters
# first get first active network device
local dev dummy n
n=0
until [ $n = 7 ]; do
dev=$(ip ad show up | awk -F': ' '/^[0-9]/ && ! / lo:/ {print $2;exit}')
if [ -z "$dev" ]; then
sleep 2 # if interface needs some time to come up
else
break
fi
n=$(($n + 1))
done
read IPADDR NETMASK BROADCAST dummy<<<$(ifdata -p $dev)
GATEWAYS=$(ip route | awk '/^default/ {print $3}')
cat >> $bootlog <<-EOF
netdevices_all="$netdevices_all"
netdevices_up="$netdevices_up"
netdevices="$netdevices"
IPADDR=$IPADDR
SERVER=$SERVER
NETMASK=$NETMASK
GATEWAYS=$GATEWAYS
BROADCAST=$BROADCAST
EOF
if [ -n "$DOMAIN" ]; then
# DOMAIN was specified on the kernel command line
echo "DOMAIN=$DOMAIN" >> $bootlog
fi
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
get_fixed_info() {
if [ $boot -eq 1 ]; then
return
fi
boot=1
# ip contains the network parameters
echo $ip | grep -q : || echo "Kernel parameter ip= does not contain network parameters."
setnet
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
nic_list_from_cmdline() {
# parse nic(s) that are specified on the kernel command line like this: ip=etX:dhcp
niclist=
line=$(< /proc/cmdline)
for item in $line; do
case $item in
ip=*:dhcp)
nic=
# count the : char in the argument of ip=
n="${item//[^:]}"
# if there are more than 5 :, it's an static IP configuration, do not use this nic
if [ ${#n} -lt 5 ]; then
nic=$(expr match "$item" 'ip=\(.*\):dhcp')
niclist+=" $nic"
fi
;;
esac
done
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
netdevice_info
boot=0
# if ip= parameter contains IP address, get fixed IP data, otherwise use DHCP
if [[ $ip =~ ^.*:*[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3} ]]; then
get_fixed_info
fi
# if devices are specified on the kernel command line, only use those devices for DHCP
nic_list_from_cmdline
if [ -n "$niclist" ]; then
netdevices=$niclist
fi
get_dhcp_info
# DHCP should not overwrite the hostname if it's already set
# then remove this line from boot.log
read hname < /proc/sys/kernel/hostname
if [ -n "$hname" -o "$hname" = '(none)' ]; then
sed -i -e '/^HOSTNAME=/d' $bootlog
fi
if ! grep -q DOMAIN= $bootlog; then
echo 'Info: no domain name configured, using "localdomain"' >&2
echo "DOMAIN=localdomain" >> $bootlog
fi
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