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/local-top/mandos" which will
10
# eventually be "/scripts/local-top/mandos" in the initrd.img file.
12
# No initramfs pre-requirements; we must instead run BEFORE cryptroot.
13
# This is not a problem, since cryptroot forces itself to run LAST.
27
for param in `cat /proc/cmdline`; do
35
test -w /conf/conf.d/cryptroot
37
# Do not replace cryptroot file unless we need to.
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mandos=/lib/mandos/plugin-runner
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# parse /conf/conf.d/cryptroot. Format:
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# target=sda2_crypt,source=/dev/sda2,key=none,keyscript=/foo/bar/baz
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exec 3>/conf/conf.d/cryptroot.mandos
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while read options; do
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# Split option line on commas
51
for opt in $options; do
52
# Find the keyscript option, if any
55
keyscript="${opt#keyscript=}"
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newopts="$newopts,$opt"
60
newopts="$newopts,$opt"
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# If there was no keyscript option, add one.
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if [ -z "$keyscript" ]; then
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newopts="$newopts,keyscript=$mandos"
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newopts="${newopts#,}"
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done < /conf/conf.d/cryptroot
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# If we need to, replace the old cryptroot file with the new file.
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if [ "$replace_cryptroot" = yes ]; then
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mv /conf/conf.d/cryptroot /conf/conf.d/cryptroot.mandos-old
79
mv /conf/conf.d/cryptroot.mandos /conf/conf.d/cryptroot
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rm /conf/conf.d/cryptroot.mandos