flatcar-scripts/build_library/prod_image_util.sh
Michael Marineau 3b8cf7d1fb build_image_util: generate package license list for each image
There isn't a sane way for users to know the licenses of individual
packages in CoreOS images in built images. The information is hidden
away back in the original ebuilds. This extends our existing package
list with a new file that also includes licenses:

```
app-admin/flannel-0.3.0-r3::coreos Apache-2.0
app-admin/fleet-0.9.1::coreos Apache-2.0
app-admin/locksmith-0.2.3::coreos Apache-2.0
app-admin/sdnotify-proxy-0.1.0::coreos Apache-2.0
app-admin/sudo-1.8.10_p2::portage-stable ISC BSD
app-admin/toolbox-0.0.0-r4::coreos Apache-2.0
app-arch/bzip2-1.0.6-r6::portage-stable BZIP2
app-arch/gzip-1.5::portage-stable GPL-3
app-arch/tar-1.27.1-r2::portage-stable GPL-3+
...
```
2015-03-24 18:10:45 -07:00

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# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Copyright (c) 2013 The CoreOS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# The GCC package includes both its libraries and the compiler.
# In prod images we only need the shared libraries.
extract_prod_gcc() {
local root_fs_dir="$1"; shift
local gcc=$(portageq-${BOARD} best_version "${BOARD_ROOT}" sys-devel/gcc)
local pkg="$(portageq-${BOARD} pkgdir)/${gcc}.tbz2"
if [[ ! -f "${pkg}" ]]; then
die "Binary package missing: $pkg"
fi
# Normally GCC's shared libraries are installed to:
# /usr/lib/gcc/x86_64-cros-linux-gnu/$version/*
# Instead we extract them to plain old /usr/lib
qtbz2 -O -t "${pkg}" | \
sudo tar -C "${root_fs_dir}" -xj \
--transform 's#/usr/lib/.*/#/usr/lib/#' \
--wildcards './usr/lib/gcc/*.so*'
package_provided "${gcc}"
}
create_prod_image() {
local image_name="$1"
local disk_layout="$2"
local update_group="$3"
local base_pkg="$4"
if [ -z "${base_pkg}" ]; then
echo "did not get base package!"
exit 1
fi
info "Building production image ${image_name}"
local root_fs_dir="${BUILD_DIR}/rootfs"
local image_contents="${image_name%.bin}_contents.txt"
local image_packages="${image_name%.bin}_packages.txt"
local image_licenses="${image_name%.bin}_licenses.txt"
start_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${update_group}"
# Install minimal GCC (libs only) and then everything else
set_image_profile prod
extract_prod_gcc "${root_fs_dir}"
emerge_to_image "${root_fs_dir}" "${base_pkg}"
write_packages "${root_fs_dir}" "${BUILD_DIR}/${image_packages}"
write_licenses "${root_fs_dir}" "${BUILD_DIR}/${image_licenses}"
extract_docs "${root_fs_dir}"
# Assert that if this is supposed to be an official build that the
# official update keys have been used.
if [[ ${COREOS_OFFICIAL:-0} -eq 1 ]]; then
grep -q official \
"${root_fs_dir}"/var/db/pkg/coreos-base/coreos-au-key-*/USE \
|| die_notrace "coreos-au-key is missing the 'official' use flag"
fi
# clean-ups of things we do not need
sudo rm ${root_fs_dir}/etc/csh.env
sudo rm -rf ${root_fs_dir}/etc/env.d
sudo rm -rf ${root_fs_dir}/var/db/pkg
# Move the ld.so configs into /usr so they can be symlinked from /
sudo mv ${root_fs_dir}/etc/ld.so.conf ${root_fs_dir}/usr/lib
sudo mv ${root_fs_dir}/etc/ld.so.conf.d ${root_fs_dir}/usr/lib
sudo ln --symbolic ../usr/lib/ld.so.conf ${root_fs_dir}/etc/ld.so.conf
# Add a tmpfiles rule that symlink ld.so.conf from /usr into /
sudo tee "${root_fs_dir}/usr/lib64/tmpfiles.d/baselayout-ldso.conf" \
> /dev/null <<EOF
L+ /etc/ld.so.conf - - - - ../usr/lib/ld.so.conf
EOF
# Only try to disable rw on /usr if there is a /usr partition
local disable_read_write=${FLAGS_enable_rootfs_verification}
if ! mountpoint -q "${root_fs_dir}/usr"; then
disable_read_write=${FLAGS_FALSE}
fi
finish_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${image_contents}"
# Make the filesystem un-mountable as read-write and setup verity.
if [[ ${disable_read_write} -eq ${FLAGS_TRUE} ]]; then
"${BUILD_LIBRARY_DIR}/disk_util" --disk_layout="${disk_layout}" \
verity "${BUILD_DIR}/${image_name}"
fi
upload_image -d "${BUILD_DIR}/${image_name}.bz2.DIGESTS" \
"${BUILD_DIR}/${image_contents}" \
"${BUILD_DIR}/${image_packages}" \
"${BUILD_DIR}/${image_name}"
}