shim/shim-install

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#! /bin/bash -e
arch=`uname -m`
rootdir=
bootdir=
efidir=
install_device=
efibootdir=
ca_string=
no_nvram=no
removable=no
clean=no
sysconfdir="/etc"
libdir="/usr/lib64" # Beware, this is arch dependent!
datadir="/usr/share"
source_dir="${datadir}/efi/${arch}"
efibootmgr="/usr/sbin/efibootmgr"
grub_probe="/usr/sbin/grub2-probe"
grub_mkrelpath="/usr/bin/grub2-mkrelpath"
no_grub_install=no
grub_install="/usr/sbin/grub2-install"
grub_install_target=
self="`basename $0`"
grub_cfg="/boot/grub2/grub.cfg"
update_boot=no
def_grub_efi="${source_dir}/grub.efi"
def_boot_efi=
[ ! -r /usr/etc/default/shim ] || . /usr/etc/default/shim
[ ! -r /etc/default/shim ] || . /etc/default/shim
if [ -z "$def_shim_efi" -o ! -e ${source_dir}/${def_shim_efi} ] ; then
def_shim_efi="shim.efi"
fi
source_shim_efi="${source_dir}/${def_shim_efi}"
if [ x${arch} = xx86_64 ] ; then
grub_install_target="x86_64-efi"
def_boot_efi="bootx64.efi"
elif [ x${arch} = xaarch64 ] ; then
grub_install_target="arm64-efi"
def_boot_efi="bootaa64.efi"
else
echo "Unsupported architecture: ${arch}"
exit 1
fi
if [ ! -d "${source_dir}" -o ! -e "${def_grub_efi}" ] ; then
# for outdated packages fall back to previous behavior
source_dir="$libdir/efi"
def_grub_efi="${source_dir}/grub.efi"
fi
# Get GRUB_DISTRIBUTOR.
if test -f "${sysconfdir}/default/grub" ; then
. "${sysconfdir}/default/grub"
fi
if [ x"${GRUB_DISTRIBUTOR}" = x ] && [ -f "${sysconfdir}/os-release" ] ; then
. "${sysconfdir}/os-release"
GRUB_DISTRIBUTOR="${NAME} ${VERSION}"
OS_ID="${ID}"
fi
bootloader_id="$(echo "$GRUB_DISTRIBUTOR" | tr 'A-Z' 'a-z' | cut -d' ' -f1)"
if test -z "$bootloader_id"; then
bootloader_id=grub
fi
efi_distributor="$bootloader_id"
bootloader_id="${bootloader_id}-secureboot"
case "$bootloader_id" in
"sle"*)
ca_string='SUSE Linux Enterprise Secure Boot CA1';;
"opensuse"*)
ca_string='openSUSE Secure Boot CA1';;
*) ca_string="";;
esac
case "$OS_ID" in
"opensuse-leap")
ca_string='SUSE Linux Enterprise Secure Boot CA1';;
esac
# bsc#1230316 For SL-Micro, always install shim/grub2 with the "removable" way
if test "$GRUB_DISTRIBUTOR" = "SL Micro"; then
removable=yes
fi
is_azure () {
local bios_vendor;
local product_name;
local sys_vendor;
local sysfs_dmi_id="/sys/class/dmi/id"
if test -e "${sysfs_dmi_id}/bios_vendor"; then
bios_vendor=$(cat "${sysfs_dmi_id}/bios_vendor")
fi
if test -e "${sysfs_dmi_id}/product_name"; then
product_name=$(cat "${sysfs_dmi_id}/product_name")
fi
if test -e "${sysfs_dmi_id}/sys_vendor"; then
sys_vendor=$(cat "${sysfs_dmi_id}/sys_vendor")
fi
if test "x${bios_vendor}" != "xMicrosoft Corporation"; then
# return false
return 1
fi
if test "x${product_name}" != "xVirtual Machine"; then
# return false
return 1
fi
if test "x${sys_vendor}" != "xMicrosoft Corporation"; then
# return false
return 1
fi
# return true
return 0
}
usage () {
echo "Usage: $self [OPTION] [INSTALL_DEVICE]"
echo
echo "Install Secure Boot Loaders on your drive."
echo
echo "--directory=DIR use images from DIR."
echo "--grub-probe=FILE use FILE as grub-probe."
echo "--removable the installation device is removable."
echo "--no-nvram don't update the NVRAM variable."
echo "--bootloader-id=ID the ID of bootloader."
echo "--efi-directory=DIR use DIR as the EFI System Partition root."
echo "--config-file=FILE use FILE as config file, default is $grub_cfg."
echo "--clean remove all installed files and configs."
echo "--suse-enable-tpm install grub.efi with TPM support."
echo "--no-grub-install Do not run grub2-install."
echo
echo "INSTALL_DEVICE must be system device filename."
}
argument () {
opt="$1"
shift
if test $# -eq 0; then
echo "$0: option requires an argument -- \`$opt'" 1>&2
exit 1
fi
echo "$1"
}
# Check the arguments.
while test $# -gt 0
do
option=$1
shift
case "$option" in
-h | --help)
usage
exit 0 ;;
--root-directory)
rootdir="`argument $option "$@"`"; shift;;
--root-directory=*)
rootdir="`echo "$option" | sed 's/--root-directory=//'`" ;;
--efi-directory)
efidir="`argument $option "$@"`"; shift;;
--efi-directory=*)
efidir="`echo "$option" | sed 's/--efi-directory=//'`" ;;
--directory | -d)
source_dir="`argument $option "$@"`"; shift;;
--directory=*)
source_dir="`echo "$option" | sed 's/--directory=//'`" ;;
--bootloader-id)
bootloader_id="`argument $option "$@"`"; shift;;
--bootloader-id=*)
bootloader_id="`echo "$option" | sed 's/--bootloader-id=//'`" ;;
--grub-probe)
grub_probe="`argument "$option" "$@"`"; shift;;
--grub-probe=*)
grub_probe="`echo "$option" | sed 's/--grub-probe=//'`" ;;
--config-file)
grub_cfg="`argument "$option" "$@"`"; shift;;
--config-file=*)
grub_cfg="`echo "$option" | sed 's/--config-file=//'`" ;;
--removable)
no_nvram=yes
removable=yes ;;
--no-nvram)
no_nvram=yes ;;
--suse-enable-tpm)
# bsc#1174320 shim-install uses wrong paths for EFI files
# There are 3 possible locations of grub-tpm.efi and we will check them
# one by one.
if [ -e "${source_dir}/grub-tpm.efi" ]; then
source_grub_efi="${source_dir}/grub-tpm.efi"
elif [ -e "${datadir}/grub2/${grub_install_target}/grub-tpm.efi" ] ; then
source_grub_efi="${datadir}/grub2/${grub_install_target}/grub-tpm.efi"
else
source_grub_efi="/usr/lib/grub2/${grub_install_target}/grub-tpm.efi"
fi
;;
--clean)
clean=yes ;;
--no-grub-install)
no_grub_install=yes ;;
-*)
echo "Unrecognized option \`$option'" 1>&2
usage
exit 1
;;
*)
if test "x$install_device" != x; then
echo "More than one install device?" 1>&2
usage
exit 1
fi
install_device="${option}" ;;
esac
done
if test -n "$efidir"; then
efi_fs=`"$grub_probe" --target=fs "${efidir}"`
if test "x$efi_fs" = xfat; then :; else
echo "$efidir doesn't look like an EFI partition." 1>&2
efidir=
fi
fi
if [ -z "$bootdir" ]; then
bootdir="/boot"
if [ -n "$rootdir" ] ; then
# Initialize bootdir if rootdir was initialized.
bootdir="${rootdir}/boot"
fi
fi
# Find the EFI System Partition.
if test -n "$efidir"; then
install_device="`"$grub_probe" --target=device --device-map= "${efidir}"`"
else
if test -d "${bootdir}/efi"; then
install_device="`"$grub_probe" --target=device --device-map= "${bootdir}/efi"`"
# Is it a mount point?
if test "x$install_device" != "x`"$grub_probe" --target=device --device-map= "${bootdir}"`"; then
efidir="${bootdir}/efi"
fi
elif test -d "${bootdir}/EFI"; then
install_device="`"$grub_probe" --target=device --device-map= "${bootdir}/EFI"`"
# Is it a mount point?
if test "x$install_device" != "x`"$grub_probe" --target=device --device-map= "${bootdir}"`"; then
efidir="${bootdir}/EFI"
fi
elif test -n "$rootdir" && test "x$rootdir" != "x/"; then
# The EFI System Partition may have been given directly using
# --root-directory.
install_device="`"$grub_probe" --target=device --device-map= "${rootdir}"`"
# Is it a mount point?
if test "x$install_device" != "x`"$grub_probe" --target=device --device-map= "${rootdir}/.."`"; then
efidir="${rootdir}"
fi
fi
if test -n "$efidir"; then
efi_fs=`"$grub_probe" --target=fs "${efidir}"`
if test "x$efi_fs" = xfat; then :; else
echo "$efidir doesn't look like an EFI partition." 1>&2
efidir=
fi
fi
fi
if test -n "$efidir"; then
efi_file=shim.efi
efibootdir="$efidir/EFI/boot"
mkdir -p "$efibootdir" || exit 1
if test "$removable" = "yes" ; then
efidir="$efibootdir"
else
efidir="$efidir/EFI/$efi_distributor"
mkdir -p "$efidir" || exit 1
fi
else
echo "No valid EFI partition" 1>&2
exit 1;
fi
if test "$removable" = "no" -a -f "$efibootdir/$def_boot_efi"; then
if test -n "$ca_string" && (grep -q "$ca_string" "$efibootdir/$def_boot_efi"); then
update_boot=yes
fi
else
update_boot=yes
fi
if test "$clean" = "yes"; then
rm -f "${efidir}/shim.efi"
rm -f "${efidir}/MokManager.efi"
rm -f "${efidir}/grub.efi"
rm -f "${efidir}/grub.cfg"
rm -f "${efidir}/boot.csv"
if test "$update_boot" = "yes"; then
rm -f "${efibootdir}/${def_boot_efi}"
rm -f "${efibootdir}/fallback.efi"
# bsc#1175626, bsc#1175656 also clean up MokManager
rm -f "${efibootdir}/MokManager.efi"
fi
if test "$no_nvram" = no && test -n "$bootloader_id"; then
# Delete old entries from the same distributor.
for bootnum in `$efibootmgr | grep '^Boot[0-9]' | \
fgrep -i " $bootloader_id" | cut -b5-8`; do
$efibootmgr -b "$bootnum" -B
done
fi
exit 0
fi
cp "${source_dir}/MokManager.efi" "${efidir}"
if test -n "$source_grub_efi" && ! test -f "$source_grub_efi"; then
echo "File $source_grub_efi doesn't exist, fallback to default one" 1>&2
source_grub_efi=""
fi
if test -z "$source_grub_efi"; then
source_grub_efi="$def_grub_efi"
fi
echo "copying $source_grub_efi to ${efidir}/grub.efi"
cp "$source_grub_efi" "${efidir}/grub.efi"
if test "$efidir" != "$efibootdir" ; then
cp "${source_shim_efi}" "${efidir}/shim.efi"
if test -n "$bootloader_id"; then
echo "shim.efi,${bootloader_id}" | iconv -f ascii -t ucs2 > "${efidir}/boot.csv"
fi
fi
if test "$update_boot" = "yes"; then
cp "$source_shim_efi" "${efibootdir}/${def_boot_efi}"
if test "$removable" = "no"; then
cp "${source_dir}/fallback.efi" "${efibootdir}"
# bsc#1175626, bsc#1175656 Since shim 15, loading MokManager becomes
# mandatory if a MOK request exists. Copy MokManager to \EFI\boot so
# that boot*.efi can load MokManager to process the request instead
# of shutting down the system immediately.
cp "${source_dir}/MokManager.efi" "${efibootdir}"
fi
fi
prepare_cryptodisk () {
uuid="$1"
if [ "x$GRUB_CRYPTODISK_PASSWORD" != x ]; then
echo "cryptomount -u $uuid -p \"$GRUB_CRYPTODISK_PASSWORD\""
return
fi
if [ "x$GRUB_TPM2_SEALED_KEY" = x ]; then
echo "cryptomount -u $uuid"
return
fi
tpm_sealed_key="${GRUB_TPM2_SEALED_KEY}"
declare -g TPM_PCR_SNAPSHOT_TAKEN
if [ -z "$TPM_PCR_SNAPSHOT_TAKEN" ]; then
TPM_PCR_SNAPSHOT_TAKEN=1
# Check if tpm_record_pcrs is available and set the command to
# grub.cfg.
if grep -q "tpm_record_pcrs" ${datadir}/grub2/${arch}-efi/command.lst ; then
echo "tpm_record_pcrs 0-9"
fi
fi
tpm_srk_alg="${GRUB_TPM2_SRK_ALG}"
if [ -z "$tpm_srk_alg" ]; then
tpm_srk_alg="RSA"
fi
cat <<EOF
tpm2_key_protector_init -a $tpm_srk_alg -T \$prefix/$tpm_sealed_key
if ! cryptomount -u $uuid --protector tpm2; then
cryptomount -u $uuid
fi
EOF
}
make_grubcfg () {
grub_cfg_dirname=`dirname $grub_cfg`
grub_cfg_basename=`basename $grub_cfg`
cfg_fs_uuid=`"$grub_probe" --target=fs_uuid "$grub_cfg_dirname"`
# bsc#1153953 - Leap 42.3 boot error snapshot missing
# We have to check btrfs is used as root file system to enable relative path
# lookup for file to be on par with other utility which also accounts for it.
GRUB_FS="$(stat -f --printf=%T / || echo unknown)"
if test "x$SUSE_BTRFS_SNAPSHOT_BOOTING" = "xtrue" &&
[ "x${GRUB_FS}" = "xbtrfs" ] ; then
cat <<EOF
set btrfs_relative_path="yes"
EOF
if ${grub_mkrelpath} --usage | grep -q -e '--relative'; then
grub_mkrelpath="${grub_mkrelpath} -r"
fi
fi
if [ x$GRUB_ENABLE_CRYPTODISK = xy ]; then
for uuid in `"${grub_probe}" --target=cryptodisk_uuid --device-map= "${grub_cfg_dirname}"`; do
prepare_cryptodisk "$uuid"
done
fi
hints="`"${grub_probe}" --target=hints_string "${grub_cfg_dirname}" 2> /dev/null`"
if [ "x$hints" != x ]; then
echo "if [ x\$feature_platform_search_hint = xy ]; then"
echo " search --no-floppy --fs-uuid --set=root ${hints} ${cfg_fs_uuid}"
echo "else"
echo " search --no-floppy --fs-uuid --set=root ${cfg_fs_uuid}"
echo "fi"
else
echo "search --no-floppy --fs-uuid --set=root ${cfg_fs_uuid}"
fi
cat <<EOF
set prefix=(\${root})`${grub_mkrelpath} ${grub_cfg_dirname}`
source "\${prefix}/${grub_cfg_basename}"
EOF
}
# bnc#889765 GRUB shows broken letters at boot
# invoke grub_install to initialize /boot/grub2 directory with files needed by grub.cfg
# bsc#1118363 shim-install didn't specify the target for grub2-install
# set the target explicitly for some special cases
if test "$no_grub_install" != "yes"; then
${grub_install} --target=${grub_install_target} --no-nvram
fi
# Making sure grub.cfg not overwritten by grub-install above
make_grubcfg > "${efidir}/grub.cfg"
if test "$no_nvram" = no && test -n "$bootloader_id"; then
modprobe -q efivars 2>/dev/null || true
# Delete old entries from the same distributor.
for bootnum in `$efibootmgr | grep '^Boot[0-9]' | \
fgrep -i " $bootloader_id" | cut -b5-8`; do
$efibootmgr -b "$bootnum" -B
done
# bsc#1230316 Skip the creation of the boot option for SL-Micro to make
# the system always boot from HDD
if test "$GRUB_DISTRIBUTOR" != "SL Micro"; then
efidir_drive="$("$grub_probe" --target=drive --device-map= "$efidir")"
efidir_disk="$("$grub_probe" --target=disk --device-map= "$efidir")"
if test -z "$efidir_drive" || test -z "$efidir_disk"; then
echo "Can't find GRUB drive for $efidir; unable to create EFI Boot Manager entry." >&2
# bsc#1119762 If the MD device is partitioned, we just need to create one
# boot entry since the partitions are nested partitions and the mirrored
# partitions share the same UUID.
elif [[ "$efidir_drive" == \(mduuid/* && "$efidir_drive" != \(mduuid/*,* ]]; then
eval $(mdadm --detail --export "$efidir_disk" |
perl -ne 'print if m{^MD_LEVEL=}; push( @D, $1) if (m{^MD_DEVICE_\S+_DEV=(\S+)$});
sub END() {print "MD_DEVS=\"", join( " ", @D), "\"\n";};')
if [ "$MD_LEVEL" != "raid1" ]; then
echo "GRUB drive for $efidir not on RAID1; unable to create EFI Boot Manager entry." >&2
fi
for mddev in $MD_DEVS; do
efidir_drive="$("$grub_probe" --target=drive --device-map= -d "$mddev")"
efidir_disk="$("$grub_probe" --target=disk --device-map= -d "$mddev")"
efidir_part="$(echo "$efidir_drive" | sed 's/^([^,]*,[^0-9]*//; s/[^0-9].*//')"
efidir_d=${mddev#/dev/}
$efibootmgr -c -d "$efidir_disk" -p "$efidir_part" -w \
-L "$bootloader_id ($efidir_d)" -l "\\EFI\\$efi_distributor\\$efi_file"
done
else
efidir_part="$(echo "$efidir_drive" | sed 's/^([^,]*,[^0-9]*//; s/[^0-9].*//')"
$efibootmgr -c -d "$efidir_disk" -p "$efidir_part" -w \
-L "$bootloader_id" -l "\\EFI\\$efi_distributor\\$efi_file"
fi
fi
fi
# bsc#1185464 bsc#1185961
# The Azure firmware sometimes doesn't respect the boot option created by
# either efibootmgr or fallback.efi so we have to remove fallback.efi to
# avoid the endless reset loop.
if is_azure; then
# Skip the workaround if we don't own \EFI\Boot or the removable
# option is used
if test "$update_boot" = "yes" && test "$removable" = "no"; then
# Remove fallback.efi which could cause the reset loop in Azure
rm -f "${efibootdir}/fallback.efi"
# Remove the older grub binary and config
rm -f "${efibootdir}/grub.efi"
rm -f "${efibootdir}/grub.cfg"
# Install new grub binary and config file to \EFI\Boot as
# the "removable" option
cp "${efidir}/grub.cfg" "${efibootdir}/grub.cfg"
cp "${efidir}/grub.efi" "${efibootdir}/grub.efi"
fi
fi