3
# This script will run in the initrd environment at boot and edit
4
# /conf/conf.d/cryptroot to set /lib/mandos/plugin-runner as keyscript
5
# when no other keyscript is set, before cryptsetup.
8
# This script should be installed as
9
# "/usr/share/initramfs-tools/scripts/init-premount/mandos" which will
10
# eventually be "/scripts/init-premount/mandos" in the initrd.img
28
for param in `cat /proc/cmdline`; do
30
ip=*) IPOPTS="${param#ip=}" ;;
32
# Split option line on commas
35
for mpar in ${param#mandos=}; do
39
connect) connect="" ;;
40
connect:*) connect="${mpar#connect:}" ;;
41
*) log_warning_msg "$0: Bad option ${mpar}" ;;
54
test -r /conf/conf.d/cryptroot
57
# Get DEVICE from /conf/initramfs.conf and other files
58
. /conf/initramfs.conf
59
for conf in /conf/conf.d/*; do
60
[ -f "${conf}" ] && . "${conf}"
62
if [ -e /conf/param.conf ]; then
66
# Override DEVICE from sixth field of ip= kernel option, if passed
68
*:*:*:*:*:*) # At least six fields
69
# Remove the first five fields
70
device="${IPOPTS#*:*:*:*:*:}"
71
# Remove all fields except the first one
72
DEVICE="${device%%:*}"
76
# Add device setting (if any) to plugin-runner.conf
77
if [ "${DEVICE+set}" = set ]; then
78
# Did we get the device from an ip= option?
79
if [ "${device+set}" = set ]; then
80
# Let ip= option override local config; append:
81
cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
83
--options-for=mandos-client:--interface=${DEVICE}
86
# Prepend device setting so any later options would override:
88
'1i--options-for=mandos-client:--interface='"${DEVICE}" \
89
/conf/conf.d/mandos/plugin-runner.conf
94
# If we are connecting directly, run "configure_networking" (from
95
# /scripts/functions); it needs IPOPTS and DEVICE
96
if [ "${connect+set}" = set ]; then
97
set +e # Required by library functions
100
if [ -n "$connect" ]; then
101
cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
103
--options-for=mandos-client:--connect=${connect}
108
# Do not replace cryptroot file unless we need to.
112
mandos=/lib/mandos/plugin-runner
115
# parse /conf/conf.d/cryptroot. Format:
116
# target=sda2_crypt,source=/dev/sda2,key=none,keyscript=/foo/bar/baz
117
exec 3>/conf/conf.d/cryptroot.mandos
118
while read -r options; do
120
# Split option line on commas
123
for opt in $options; do
124
# Find the keyscript option, if any
127
keyscript="${opt#keyscript=}"
128
newopts="$newopts,$opt"
132
newopts="$newopts,$opt"
138
# If there was no keyscript option, add one.
139
if [ -z "$keyscript" ]; then
140
replace_cryptroot=yes
141
newopts="$newopts,keyscript=$mandos"
143
newopts="${newopts#,}"
145
done < /conf/conf.d/cryptroot
148
# If we need to, replace the old cryptroot file with the new file.
149
if [ "$replace_cryptroot" = yes ]; then
150
mv /conf/conf.d/cryptroot /conf/conf.d/cryptroot.mandos-old
151
mv /conf/conf.d/cryptroot.mandos /conf/conf.d/cryptroot
153
rm /conf/conf.d/cryptroot.mandos