diskimage-builder/diskimage_builder/elements/gentoo/root.d/10-gentoo-image
Matthew Thode f1d7e902e3
support alternate portage directories
The 17.1 profile changed the defaults used in portage for where we store
our repo, distfiles and binpkgs.  Some portage related variables need to
be set deterministically.  17.1 is no enabled for Systemd's profile.

Change-Id: Ib55f6875c5cb461c3c530b51d7420ce3dc8da360
2019-07-26 19:30:01 -05:00

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#!/bin/bash
# Copyright 2016 Matthew Thode
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
[ -n "${ARCH}" ]
[ -n "${TARGET_ROOT}" ]
if [ 'amd64' = "${ARCH}" ] ; then
ARCH='x86_64'
fi
if ! [ 'x86_64' = "${ARCH}" ] ; then
echo "Only x86_64 images are currently available but ARCH is set to ${ARCH}."
exit 1
fi
# valid gentoo profiles are as follows
# default/linux/amd64/13.0
# default/linux/amd64/13.0/no-multilib
# hardened/linux/amd64
# hardened/linux/amd64/no-multilib
GENTOO_PROFILE=${GENTOO_PROFILE:-'default/linux/amd64/17.1'}
if [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1" ]]; then
FILENAME_BASE='gentoo-stage4'
SIGNED_SOURCE_SUFFIX='minimal'
elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/no-multilib" ]]; then
FILENAME_BASE='gentoo-stage4-nomultilib'
SIGNED_SOURCE_SUFFIX='minimal-nomultilib'
elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/hardened" ]]; then
FILENAME_BASE='gentoo-stage4-hardened'
SIGNED_SOURCE_SUFFIX='hardened+minimal'
elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/no-multilib/hardened" ]]; then
FILENAME_BASE='gentoo-stage4-hardened-nomultilib'
SIGNED_SOURCE_SUFFIX='hardened+minimal-nomultilib'
elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.0/systemd" ]]; then
FILENAME_BASE='gentoo-stage4-systemd'
SIGNED_SOURCE_SUFFIX='systemd'
else
echo 'invalid profile, please select from the following profiles'
echo 'default/linux/amd64/17.1'
echo 'default/linux/amd64/17.1/no-multilib'
echo 'default/linux/amd64/17.1/hardened'
echo 'default/linux/amd64/17.1/no-multilib/hardened'
echo 'default/linux/amd64/17.0/systemd'
exit 1
fi
DIB_CLOUD_SOURCE=${DIB_CLOUD_SOURCE:-"http://distfiles.gentoo.org/releases/amd64/autobuilds/latest-stage4-amd64-${SIGNED_SOURCE_SUFFIX}.txt"}
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-"http://distfiles.gentoo.org/releases/amd64/autobuilds/$(curl ${DIB_CLOUD_SOURCE} -s -f | tail -n 1 | cut -d\ -f 1)"}
BASE_IMAGE_FILE_SUFFIX=${BASE_IMAGE_FILE_SUFFIX:-"$(basename ${BASE_IMAGE_FILE} | cut -d. -f 2,3)"}
SIGNATURE_FILE="${SIGNATURE_FILE:-${BASE_IMAGE_FILE}.DIGESTS.asc}"
CACHED_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.${BASE_IMAGE_FILE_SUFFIX}"
CACHED_SIGNATURE_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.asc"
if [ -n "${DIB_OFFLINE}" -a -f "${CACHED_FILE}" ] ; then
echo "Not checking freshness of cached ${CACHED_FILE}"
else
echo 'Fetching Base Image'
"${TMP_HOOKS_PATH}"/bin/cache-url "${SIGNATURE_FILE}" "${CACHED_SIGNATURE_FILE}"
"${TMP_HOOKS_PATH}"/bin/cache-url "${BASE_IMAGE_FILE}" "${CACHED_FILE}"
pushd "${DIB_IMAGE_CACHE}"
# import the key
# this key can be verified at one of the following places
# https://wiki.gentoo.org/wiki/Project:RelEng#Keys
# https://dev.gentoo.org/~dolsen/releases/keyrings/gentoo-keys-*.tar.xz
# http://distfiles.gentoo.org/distfiles/gentoo-keys-*.tar.xz
GPGDIR=$(mktemp -d -t)
gpg --no-default-keyring --keyring "${GPGDIR}"/gentookeys.gpg --import "${TMP_HOOKS_PATH}"/extra-data.d/gentoo-releng.gpg
# check the sig file
gpgv --keyring "${GPGDIR}"/gentookeys.gpg "${CACHED_SIGNATURE_FILE}"
if [[ "${?}" != 0 ]]; then
echo 'invalid signature file'
exit 1
fi
rm -rf "${GPGDIR}"
echo 'valid key used'
CACHED_SHA512SUM=$(grep -A1 -e 'SHA512' "${CACHED_SIGNATURE_FILE}" | grep -e "${BASE_IMAGE_FILE_SUFFIX}$" | cut -d\ -f 1)
ACTUAL_SHA512SUM=$(sha512sum "${CACHED_FILE}" | cut -d\ -f 1)
if [[ "${ACTUAL_SHA512SUM}" != "${CACHED_SHA512SUM}" ]]; then
echo "invalid checksum on downloaded tarball: ${CACHED_FILE}"
exit 1
fi
echo 'valid checksum'
popd
fi
# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
# image tarball and host OS)
sudo tar -C "${TARGET_ROOT}" --numeric-owner --xattrs -xf "${CACHED_FILE}"