mirror of
https://github.com/linuxboot/heads.git
synced 2024-12-21 05:53:14 +00:00
64 lines
1.5 KiB
Bash
Executable File
64 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
|
|
# Generate a TPM key used to unlock LUKS disks
|
|
set -e -o pipefail
|
|
. /etc/functions
|
|
|
|
lvm_volume_group=""
|
|
while getopts "p:d:l:" arg; do
|
|
case $arg in
|
|
p) paramsdir="$OPTARG" ;;
|
|
d) paramsdev="$OPTARG" ;;
|
|
l) lvm_volume_group="$OPTARG" ;;
|
|
esac
|
|
done
|
|
shift `expr $OPTIND - 1`
|
|
key_devices="$@"
|
|
|
|
if [ -z "$paramsdir" ]; then
|
|
die "Usage: $0 -p /boot [-l qubes_dom0] [/dev/sda2 /dev/sda5 ...] "
|
|
fi
|
|
|
|
if [ -z "$paramsdev" ]; then
|
|
paramsdev="$paramsdir"
|
|
fi
|
|
|
|
if [ -n "$lvm_volume_group" ]; then
|
|
lvm vgchange -a y $lvm_volume_group \
|
|
|| die "Failed to activate the LVM group"
|
|
|
|
for dev in /dev/$lvm_volume_group/*; do
|
|
key_devices="$key_devices $dev"
|
|
done
|
|
fi
|
|
|
|
if [ -z "$key_devices" ]; then
|
|
die "No devices specified for TPM key insertion"
|
|
fi
|
|
|
|
# try to switch to rw mode
|
|
mount -o rw,remount $paramsdev
|
|
|
|
rm -f $paramsdir/kexec_key_lvm.txt || true
|
|
if [ -n "$lvm_volume_group" ]; then
|
|
echo "$lvm_volume_group" > $paramsdir/kexec_key_lvm.txt \
|
|
|| die "Failed to write lvm group to key config "
|
|
fi
|
|
|
|
rm -f $paramsdir/kexec_key_devices.txt || true
|
|
for dev in $key_devices; do
|
|
uuid=`cryptsetup luksUUID "$dev" 2>/dev/null` \
|
|
|| die "Failed to get UUID for device $dev"
|
|
echo "$dev $uuid" >> $paramsdir/kexec_key_devices.txt \
|
|
|| die "Failed to add $dev:$uuid to key devices config"
|
|
done
|
|
|
|
kexec-seal-key $paramsdir \
|
|
|| die "Failed to save and generate key in TPM"
|
|
|
|
# sign and auto-roll config counter
|
|
kexec-sign-config -p $paramsdir -u \
|
|
|| die "Failed to sign updated config"
|
|
|
|
# switch back to ro mode
|
|
mount -o ro,remount $paramsdev
|