mirror of
https://github.com/linuxboot/heads.git
synced 2025-02-08 12:00:11 +00:00
4910c1188f
Changes:
- As per master: when TOTP cannot unseal TOTP, user is prompted to either reset or regenerate TOTP
- Now, when either is done and a previous TPM Disk Unlock Key was setuped, the user is guided into:
- Regenerating checksums and signing them
- Regenerating TPM disk Unlock Key and resealing TPM disk Unlock Key with passphrase into TPM
- LUKS header being modified, user is asked to resign kexec.sig one last time prior of being able to default boot
- When no previous Disk Unlock Key was setuped, the user is guided into:
- The above, plus
- Detection of LUKS containers,suggesting only relevant partitions
- Addition of TRACE and DEBUG statements to troubleshoot actual vs expected behavior while coding
- Were missing under TPM Disk Unlock Key setup codepaths
- Fixes for #645 : We now check if only one slots exists and we do not use it if its slot1.
- Also shows in DEBUG traces now
Unrelated staged changes
- ash_functions: warn and die now contains proper spacing and eye attaction
- all warn and die calls modified if containing warnings and too much punctuation
- unify usage of term TPM Disk Unlock Key and Disk Recovery Key
89 lines
2.3 KiB
Bash
Executable File
89 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# Generate a TPM key used to unlock LUKS disks
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. /etc/functions
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TRACE "kexec-save-key: start"
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set -e -o pipefail
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. /etc/functions
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lvm_volume_group=""
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skip_sign="n"
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while getopts "sp:d:l:" arg; do
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case $arg in
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s) skip_sign="y" ;;
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p) paramsdir="$OPTARG" ;;
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d) paramsdev="$OPTARG" ;;
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l) lvm_volume_group="$OPTARG" ;;
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esac
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done
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DEBUG "kexec-save-key prior of parsing: paramsdir: $paramsdir, paramsdev: $paramsdev, lvm_volume_group: $lvm_volume_group"
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shift `expr $OPTIND - 1`
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key_devices="$@"
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DEBUG "kexec-save-key: key_devices: $key_devices"
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if [ -z "$paramsdir" ]; then
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die "Usage: $0 [-s] -p /boot [-l qubes_dom0] [/dev/sda2 /dev/sda5 ...] "
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fi
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if [ -z "$paramsdev" ]; then
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paramsdev="$paramsdir"
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DEBUG "kexec-save-key: paramsdev modified to : $paramsdev"
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fi
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paramsdev="${paramsdev%%/}"
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paramsdir="${paramsdir%%/}"
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DEBUG "kexec-save-key prior of last override: paramsdir: $paramsdir, paramsdev: $paramsdev, lvm_volume_group: $lvm_volume_group"
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if [ -n "$lvm_volume_group" ]; then
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lvm vgchange -a y $lvm_volume_group \
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|| die "Failed to activate the LVM group"
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for dev in /dev/$lvm_volume_group/*; do
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key_devices="$key_devices $dev"
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done
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fi
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if [ -z "$key_devices" ]; then
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die "No devices specified for TPM key insertion"
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fi
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# try to switch to rw mode
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mount -o rw,remount $paramsdev
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rm -f $paramsdir/kexec_key_lvm.txt || true
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if [ -n "$lvm_volume_group" ]; then
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DEBUG "kexec-save-key saving under $paramsdir/kexec_key_lvm.txt : lvm_volume_group: $lvm_volume_group"
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echo "$lvm_volume_group" > $paramsdir/kexec_key_lvm.txt \
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|| die "Failed to write lvm group to key config "
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fi
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rm -f $paramsdir/kexec_key_devices.txt || true
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for dev in $key_devices; do
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DEBUG "gettinmg uuid for $dev"
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uuid=`cryptsetup luksUUID "$dev" 2>/dev/null` \
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|| die "Failed to get UUID for device $dev"
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DEBUG "saving under $paramsdir/kexec_key_devices.txt : dev: $dev, uuid: $uuid"
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echo "$dev $uuid" >> $paramsdir/kexec_key_devices.txt \
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|| die "Failed to add $dev:$uuid to key devices config"
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done
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kexec-seal-key $paramsdir \
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|| die "Failed to save and generate key in TPM"
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if [ "$skip_sign" != "y" ]; then
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extparam=
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if [ "$CONFIG_IGNORE_ROLLBACK" != "y" ]; then
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extparam=-r
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fi
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# sign and auto-roll config counter
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kexec-sign-config -p $paramsdir $extparam \
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|| die "Failed to sign updated config"
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fi
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# switch back to ro mode
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mount -o ro,remount $paramsdev |