History

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

environment.d

Support secure-boot bootloader where possible

2021-03-11 10:27:59 +13:00

root.d

Deprecate dib-python; remove from in-tree elements

2020-08-07 10:38:16 +10:00

test-elements

Add a test to validate we can build debian vms

2017-05-05 19:17:39 +02:00

element-deps

Deprecate dib-python; remove from in-tree elements

2020-08-07 10:38:16 +10:00

element-provides

Move elements & lib relative to diskimage_builder package

2016-11-01 17:27:41 -07:00

package-installs.yaml

Add debian minimal requirement for arm64

2017-10-16 13:39:50 +08:00

README.rst

Add security suite name override in debian-minimal

2019-10-15 21:20:02 +00:00

README.rst

debian-minimal

The debian-minimal element uses debootstrap for generating a minimal image.

By default this element creates the latest stable release. The exact setting can be found in the element's environment.d directory in the variable DIB_RELEASE. If a different release of Debian should be created, the variable DIB_RELEASE can be set appropriately.

Note that this element installs systemd-sysv as the init system

The element obeys the DIB_DISTRIBUTION_MIRROR argument for mirroring (see debootsrap element documentation). However, the security repositories are separate for Debian, so we can not assume they exist at DIB_DISTRIBUTION_MIRROR. If you do not wish to use the upstream repository (from security.debian.org) override it with DIB_DEBIAN_SECURITY_MIRROR. The security suite name's subpath can also be overridden to something other than /updates with the DIB_DEBIAN_SECURITY_SUBPATH variable.