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cryptsetup/mkinitrd-setup.sh

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#!/bin/bash
#
#%stage: crypto
#
if [ -x /sbin/cryptsetup -a -x /sbin/dmsetup ] ; then
luks_blockdev=
# bd holds the device we see the decrypted LUKS partition as
for bd in $blockdev ; do
luks_name=
update_blockdev $bd
luks_blockmajor=$blockmajor
luks_blockminor=$blockminor
# luksbd holds the device, LUKS is running on
for luksbd in $(dm_resolvedeps $bd); do # should only be one for luks
[ $? -eq 0 ] || return 1
update_blockdev $luksbd
if /sbin/cryptsetup isLuks $luksbd 2>/dev/null; then
root_luks=1
tmp_root_dm=1 # luks needs dm
luks_name="$(dmsetup -c info -o name --noheadings -j $luks_blockmajor -m $luks_blockminor)"
eval luks_${luks_name}=$(beautify_blockdev ${luksbd})
save_var luks_${luks_name}
luks="$luks $luks_name"
luks_blockdev="$luks_blockdev $luksbd"
fi
done
if [ ! "$luks_name" ]; then # no luks found
luks_blockdev="$luks_blockdev $bd"
fi
done
blockdev="$luks_blockdev"
fi
if [ "$root_luks" ]; then
case $LANG in
en*)
/* We only support english keyboard layout currently */
;;
*)
echo "Only english keyboard layout supported."
echo "Please ensure that the password is typed correctly."
luks_lang=$LANG
;;
esac
for m in $(cat /proc/crypto | grep module | sed 's/^module .*: \(.*\)$/\1/'); do
cryptmodules="$cryptmodules $m"
done
fi
save_var root_luks # do we have luks?
save_var luks # which names do the luks devices have?
save_var cryptmodules # required kernel modules for crypto setup
save_var luks_lang # original language settings