diskimage-builder/diskimage_builder/elements/gentoo/environment.d/00-gentoo-envars.bash
Steve Baker 27a326dafb Support secure-boot bootloader where possible
As of grub2 >= 2.02-95 on redhat family distros, calling grub2-install
on an EFI partition will fail with: "this utility cannot be used for
EFI platforms because it does not support UEFI Secure Boot."

This version of grub is now in centos8-stream and non-eus repos of
RHEL-8. It is not currently possible to build whole-disk UEFI images
on these distros, and when this package is promoted this will also
affect centos8 and RHEL-8 eus. The grub maintainers made this change
because the grub2-install generated /boot/efi/EFI/BOOT/BOOTX64.EFI
will never be capable of booting with Secure Boot.

This change defines a $EFI_BOOT_DIR for every distro element. When
directory /boot/efi/$EFI_BOOT_DIR exists a grub.cfg file in will be
generated there. This change also installs the shim package on redhat
family distros, which installs a copy of the shim bootloader to
/boot/efi/EFI/BOOT/BOOTX64.EFI. Using centos as an example, this
allows UEFI to boot the shim /boot/efi/EFI/BOOT/BOOTX64.EFI which
then chains to /boot/efi/EFI/centos/grubx64.efi.

If /boot/efi/$EFI_BOOT_DIR doesn't exist (such as for Ubuntu,
/boot/efi/EFI/ubuntu) the current behaviour of running grub-install to
generate /boot/efi/EFI/BOOT/BOOTX64.EFI will continue. For distros
such as Ubutnu where packaging does not populate /boot/efi/EFI/ubuntu
with .efi files, secure boot can be added in the future by copying
.efi files to /boot/efi/EFI/ubuntu and copying the shim file to
/boot/efi/EFI/BOOT/BOOTX64.EFI.

Change-Id: I90925218ff2aa4c4daffcf86e686b6d98d6b0f21
2021-03-11 10:27:59 +13:00

29 lines
1.4 KiB
Bash

export DIB_RELEASE=gentoo
export DISTRO_NAME=gentoo
export EFI_BOOT_DIR="EFI/gentoo"
export GENTOO_PROFILE=${GENTOO_PROFILE:-'default/linux/amd64/17.1'}
export GENTOO_PORTAGE_CLEANUP=${GENTOO_PORTAGE_CLEANUP:-'True'}
export GENTOO_PYTHON_TARGETS=${GENTOO_PYTHON_TARGETS:-'python3_8'}
export GENTOO_OVERLAYS=${GENTOO_OVERLAYS:-''}
export GENTOO_EMERGE_DEFAULT_OPTS=${GENTOO_EMERGE_DEFAULT_OPTS:-"--binpkg-respect-use --rebuilt-binaries=y --usepkg=y --with-bdeps=y --binpkg-changed-deps=y --quiet --jobs=2 --autounmask=n"}
# set the default bash array if GENTOO_EMERGE_ENV is not defined as an array
if ! declare -p GENTOO_EMERGE_ENV 2> /dev/null | grep -q '^declare \-a'; then
declare -a GENTOO_EMERGE_ENV
GENTOO_EMERGE_ENV+=("USE=\"-build\"")
GENTOO_EMERGE_ENV+=("FEATURES=\"binpkg-multi-instance buildpkg parallel-fetch parallel-install\"")
GENTOO_EMERGE_ENV+=("PKGDIR=\"/tmp/portage-pkgdir\"")
GENTOO_EMERGE_ENV+=("DISTDIR=\"/tmp/portage-distdir\"")
GENTOO_EMERGE_ENV+=("PORTDIR=\"/tmp/portage-portdir\"")
export GENTOO_EMERGE_ENV
fi
# itterate over the array, exporting each 'line'
for (( i=0; i<${#GENTOO_EMERGE_ENV[@]}; i++ )); do
eval export "${GENTOO_EMERGE_ENV[i]}"
done
if [[ "${GENTOO_PROFILE}" == *"systemd"* ]]; then
export DIB_INIT_SYSTEM=${DIB_INIT_SYSTEM:-'systemd'}
else
export DIB_INIT_SYSTEM=${DIB_INIT_SYSTEM:-'openrc'}
fi