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122 lines
3.2 KiB
122 lines
3.2 KiB
#!/bin/sh |
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# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- |
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# ex: ts=8 sw=4 sts=4 et filetype=sh |
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PATH=/usr/sbin:/usr/bin:/sbin:/bin |
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NEWROOT=${NEWROOT:-"/sysroot"} |
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# do not ask, if we already have root |
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[ -f $NEWROOT/proc ] && exit 0 |
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# check if destination already exists |
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[ -b /dev/mapper/$2 ] && exit 0 |
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# we already asked for this device |
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[ -f /tmp/cryptroot-asked-$2 ] && exit 0 |
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# load dm_crypt if it is not already loaded |
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[ -d /sys/module/dm_crypt ] || modprobe dm_crypt |
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. /lib/dracut-crypt-lib.sh |
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# default luksname - luks-UUID |
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luksname=$2 |
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# fallback to passphrase |
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ask_passphrase=1 |
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# if device name is /dev/dm-X, convert to /dev/mapper/name |
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if [ "${1##/dev/dm-}" != "$1" ]; then |
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device="/dev/mapper/$(dmsetup info -c --noheadings -o name "$1")" |
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else |
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device="$1" |
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fi |
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# TODO: improve to support what cmdline does |
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if [ -f /etc/crypttab ] && getargbool 1 rd.luks.crypttab -n rd_NO_CRYPTTAB; then |
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while read name dev luksfile rest; do |
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# ignore blank lines and comments |
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if [ -z "$name" -o "${name#\#}" != "$name" ]; then |
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continue |
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fi |
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# UUID used in crypttab |
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if [ "${dev%%=*}" = "UUID" ]; then |
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if [ "luks-${dev##UUID=}" = "$2" ]; then |
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luksname="$name" |
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break |
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fi |
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# path used in crypttab |
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else |
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cdev=$(readlink -f $dev) |
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mdev=$(readlink -f $device) |
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if [ "$cdev" = "$mdev" ]; then |
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luksname="$name" |
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break |
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fi |
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fi |
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done < /etc/crypttab |
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unset name dev rest |
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fi |
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# |
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# Open LUKS device |
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# |
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info "luksOpen $device $luksname $luksfile" |
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if [ -n "$luksfile" -a "$luksfile" != "none" -a -e "$luksfile" ]; then |
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if cryptsetup --key-file "$luksfile" luksOpen "$device" "$luksname"; then |
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ask_passphrase=0 |
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fi |
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else |
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while [ -n "$(getarg rd.luks.key)" ]; do |
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if tmp=$(getkey /tmp/luks.keys $device); then |
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keydev="${tmp%%:*}" |
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keypath="${tmp#*:}" |
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else |
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if [ $# -eq 3 ]; then |
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if [ $3 -eq 0 ]; then |
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info "No key found for $device. Fallback to passphrase mode." |
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break |
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fi |
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info "No key found for $device. Will try $3 time(s) more later." |
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set -- "$1" "$2" "$(($3 - 1))" |
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else |
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info "No key found for $device. Will try later." |
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fi |
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initqueue --unique --onetime --settled \ |
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--name cryptroot-ask-$luksname \ |
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$(command -v cryptroot-ask) "$@" |
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exit 0 |
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fi |
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unset tmp |
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info "Using '$keypath' on '$keydev'" |
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readkey "$keypath" "$keydev" "$device" \ |
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| cryptsetup -d - luksOpen "$device" "$luksname" |
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unset keypath keydev |
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ask_passphrase=0 |
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break |
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done |
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fi |
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if [ $ask_passphrase -ne 0 ]; then |
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luks_open="$(command -v cryptsetup) luksOpen" |
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ask_for_password --ply-tries 5 \ |
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--ply-cmd "$luks_open -T1 $device $luksname" \ |
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--ply-prompt "Password ($device)" \ |
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--tty-tries 1 \ |
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--tty-cmd "$luks_open -T5 $device $luksname" |
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unset luks_open |
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fi |
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unset device luksname luksfile |
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# mark device as asked |
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>> /tmp/cryptroot-asked-$2 |
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udevsettle |
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exit 0
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