name : cryptroot-ask.sh #!/bin/sh PATH=/usr/sbin:/usr/bin:/sbin:/bin NEWROOT=${NEWROOT:-"/sysroot"} # do not ask, if we already have root [ -f $NEWROOT/proc ] && exit 0 . /lib/dracut-lib.sh # if device name is /dev/dm-X, convert to /dev/mapper/name if [ "${1##/dev/dm-}" != "$1" ]; then device="/dev/mapper/$(dmsetup info -c --noheadings -o name "$1")" else device="$1" fi # default luksname - luks-UUID luksname=$2 # number of tries numtries=${3:-10} # TODO: improve to support what cmdline does if [ -f /etc/crypttab ] && getargbool 1 rd.luks.crypttab -d -n rd_NO_CRYPTTAB; then while read name dev luksfile luksoptions || [ -n "$name" ]; do # ignore blank lines and comments if [ -z "$name" -o "${name#\#}" != "$name" ]; then continue fi # PARTUUID used in crypttab if [ "${dev%%=*}" = "PARTUUID" ]; then if [ "luks-${dev##PARTUUID=}" = "$luksname" ]; then luksname="$name" break fi # UUID used in crypttab elif [ "${dev%%=*}" = "UUID" ]; then if [ "luks-${dev##UUID=}" = "$luksname" ]; then luksname="$name" break fi # ID used in crypttab elif [ "${dev%%=*}" = "ID" ]; then if [ "luks-${dev##ID=}" = "$luksname" ]; then luksname="$name" break fi # path used in crypttab else cdev=$(readlink -f $dev) mdev=$(readlink -f $device) if [ "$cdev" = "$mdev" ]; then luksname="$name" break fi fi done < /etc/crypttab unset name dev fi # check if destination already exists [ -b /dev/mapper/$luksname ] && exit 0 # we already asked for this device asked_file=/tmp/cryptroot-asked-$luksname [ -f $asked_file ] && exit 0 # load dm_crypt if it is not already loaded [ -d /sys/module/dm_crypt ] || modprobe dm_crypt . /lib/dracut-crypt-lib.sh # # Open LUKS device # info "luksOpen $device $luksname $luksfile $luksoptions" OLD_IFS="$IFS" IFS=, set -- $luksoptions IFS="$OLD_IFS" while [ $# -gt 0 ]; do case $1 in noauto) # skip this exit 0 ;; swap) # skip this exit 0 ;; tmp) # skip this exit 0 ;; allow-discards) allowdiscards="--allow-discards" ;; header=*) cryptsetupopts="${cryptsetupopts} --${1}" ;; esac shift done # parse for allow-discards if strstr "$(cryptsetup --help)" "allow-discards"; then if discarduuids=$(getargs "rd.luks.allow-discards"); then discarduuids=$(str_replace "$discarduuids" 'luks-' '') if strstr " $discarduuids " " ${luksdev##luks-}"; then allowdiscards="--allow-discards" fi elif getargbool 0 rd.luks.allow-discards; then allowdiscards="--allow-discards" fi fi if strstr "$(cryptsetup --help)" "allow-discards"; then cryptsetupopts="$cryptsetupopts $allowdiscards" fi unset allowdiscards # fallback to passphrase ask_passphrase=1 if [ -n "$luksfile" -a "$luksfile" != "none" -a -e "$luksfile" ]; then if cryptsetup --key-file "$luksfile" $cryptsetupopts luksOpen "$device" "$luksname"; then ask_passphrase=0 fi else while [ -n "$(getarg rd.luks.key)" ]; do if tmp=$(getkey /tmp/luks.keys $device); then keydev="${tmp%%:*}" keypath="${tmp#*:}" else if [ $numtries -eq 0 ]; then warn "No key found for $device. Fallback to passphrase mode." break fi sleep 1 info "No key found for $device. Will try $numtries time(s) more later." initqueue --unique --onetime --settled \ --name cryptroot-ask-$luksname \ $(command -v cryptroot-ask) "$device" "$luksname" "$(($numtries-1))" exit 0 fi unset tmp info "Using '$keypath' on '$keydev'" readkey "$keypath" "$keydev" "$device" \ | cryptsetup -d - $cryptsetupopts luksOpen "$device" "$luksname" unset keypath keydev ask_passphrase=0 break done fi if [ $ask_passphrase -ne 0 ]; then luks_open="$(command -v cryptsetup) $cryptsetupopts luksOpen" _timeout=$(getargs "rd.luks.timeout") _timeout=${_timeout:-0} ask_for_password --ply-tries 5 \ --ply-cmd "$luks_open -T1 $device $luksname" \ --ply-prompt "Password ($device)" \ --tty-tries 1 \ --tty-cmd "$luks_open -T5 -t $_timeout $device $luksname" unset luks_open unset _timeout fi unset device luksname luksfile # mark device as asked >> $asked_file need_shutdown udevsettle exit 0