You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.5 KiB
43 lines
1.5 KiB
#!/bin/sh |
|
|
|
command -v ask_for_password >/dev/null || . /lib/dracut-crypt-lib.sh |
|
|
|
# loop_decrypt mnt_point keypath keydev device |
|
# |
|
# Decrypts symmetrically encrypted key to standard output. |
|
# |
|
# mnt_point - mount point where <keydev> is already mounted |
|
# keypath - LUKS encrypted loop file path relative to <mnt_point> |
|
# keydev - device on which key resides; only to display in prompt |
|
# device - device to be opened by cryptsetup; only to display in prompt |
|
loop_decrypt() { |
|
local mntp="$1" |
|
local keypath="$2" |
|
local keydev="$3" |
|
local device="$4" |
|
|
|
local key="/dev/mapper/${mntp##*/}" |
|
|
|
if [ ! -b $key ]; then |
|
info "Keyfile has .img suffix, treating it as LUKS-encrypted loop keyfile container to unlock $device" |
|
|
|
local loopdev=$(losetup -f "${mntp}/${keypath}" --show) |
|
local opts="-d - luksOpen $loopdev ${key##*/}" |
|
|
|
ask_for_password \ |
|
--cmd "cryptsetup $opts" \ |
|
--prompt "Password ($keypath on $keydev for $device)" \ |
|
--tty-echo-off |
|
|
|
[ -b $key ] || die "Tried setting it up, but keyfile block device was still not found!" |
|
|
|
initqueue --onetime --finished --unique --name "crypt-loop-cleanup-10-${key##*/}" \ |
|
$(command -v cryptsetup) "luksClose $key" |
|
initqueue --onetime --finished --unique --name "crypt-loop-cleanup-20-${loopdev##*/}" \ |
|
$(command -v losetup) "-d $loopdev" |
|
else |
|
info "Existing keyfile found, re-using it for $device" |
|
fi |
|
|
|
cat $key |
|
}
|
|
|