blob: 2efac30ca078a8689f30989a04fa68d61e78ab4a [file] [log] [blame]
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
. "${SRC_ROOT}/platform/dev/toolchain_utils.sh" || exit 1
cleanup_mounts() {
local prev_ret=$?
# Disable die on error.
set +e
# See if we ran out of space. Only show if we errored out via a trap.
if [[ ${prev_ret} -ne 0 ]]; then
local df=$(df -B 1M "${root_fs_dir}")
if [[ ${df} == *100%* ]]; then
error "Here are the biggest files (by disk usage):"
# Send final output to stderr to match `error` behavior.
sudo find "${root_fs_dir}" -xdev -type f -printf '%b %P\n' | \
awk '$1 > 16 { $1 = $1 * 512; print }' | sort -n | tail -100 1>&2
error "Target image has run out of space:"
error "${df}"
fi
fi
echo "Cleaning up mounts"
safe_umount_tree "${root_fs_dir}"
safe_umount_tree "${stateful_fs_dir}"
safe_umount_tree "${esp_fs_dir}"
# Turn die on error back on.
set -e
}
zero_free_space() {
local fs_mount_point=$1
if ! mountpoint -q "${fs_mount_point}"; then
info "Not zeroing freespace in ${fs_mount_point} since it isn't a mounted" \
"filesystem. This is normal for squashfs and ubifs partitions."
return 0
fi
info "Zeroing freespace in ${fs_mount_point}"
# dd is a silly thing and will produce a "No space left on device" message
# that cannot be turned off and is confusing to unsuspecting victims.
info "${fs_mount_point}/filler"
( sudo dd if=/dev/zero of="${fs_mount_point}/filler" bs=4096 conv=fdatasync \
status=noxfer || true ) 2>&1 | grep -v "No space left on device"
sudo rm "${fs_mount_point}/filler"
}
create_base_image() {
local image_name=$1
local rootfs_verification_enabled=$2
local bootcache_enabled=$3
local image_type="usb"
if [[ "${FLAGS_disk_layout}" != "default" ]]; then
image_type="${FLAGS_disk_layout}"
else
if should_build_image ${CHROMEOS_FACTORY_INSTALL_SHIM_NAME}; then
image_type="factory_install"
fi
fi
check_valid_layout "base"
check_valid_layout ${image_type}
info "Using image type ${image_type}"
get_disk_layout_path
info "Using disk layout ${DISK_LAYOUT_PATH}"
root_fs_dir="${BUILD_DIR}/rootfs"
stateful_fs_dir="${BUILD_DIR}/stateful"
esp_fs_dir="${BUILD_DIR}/esp"
trap "cleanup_mounts && delete_prompt" EXIT
cleanup_mounts &> /dev/null
mkdir "${root_fs_dir}" "${stateful_fs_dir}" "${esp_fs_dir}"
build_gpt_image "${BUILD_DIR}/${image_name}" "${image_type}"
mount_image "${BUILD_DIR}/${image_name}" \
"${root_fs_dir}" "${stateful_fs_dir}" "${esp_fs_dir}"
df -h "${root_fs_dir}"
# Create symlinks so that /usr/local/usr based directories are symlinked to
# /usr/local/ directories e.g. /usr/local/usr/bin -> /usr/local/bin, etc.
setup_symlinks_on_root "${stateful_fs_dir}/dev_image" \
"${stateful_fs_dir}/var_overlay" "${stateful_fs_dir}"
# We need to install libc manually from the cross toolchain.
# TODO: Improve this? It would be ideal to use emerge to do this.
PKGDIR="/var/lib/portage/pkgs"
local libc_atom="cross-${CHOST}/glibc-${LIBC_VERSION}"
LIBC_PATH="${PKGDIR}/${libc_atom}.tbz2"
if [[ ! -e ${LIBC_PATH} ]]; then
sudo emerge --nodeps -gf "=${libc_atom}"
fi
# Strip out files we don't need in the final image at runtime.
local libc_excludes=(
# Compile-time headers.
'usr/include' 'sys-include'
# Link-time objects.
'*.[ao]'
# Debug commands not used by normal runtime code.
'usr/bin/'{getent,ldd}
# LD_PRELOAD objects for debugging.
'lib*/lib'{memusage,pcprofile,SegFault}.so 'usr/lib*/audit'
# We only use files & dns with nsswitch, so throw away the others.
'lib*/libnss_'{compat,db,hesiod,nis,nisplus}'*.so*'
# This is only for very old packages which we don't have.
'lib*/libBrokenLocale*.so*'
)
pbzip2 -dc --ignore-trailing-garbage=1 "${LIBC_PATH}" | \
sudo tar xpf - -C "${root_fs_dir}" ./usr/${CHOST} \
--strip-components=3 "${libc_excludes[@]/#/--exclude=}"
if should_build_image ${CHROMEOS_FACTORY_INSTALL_SHIM_NAME}; then
# Install our custom factory install kernel with the appropriate use flags
# to the image.
emerge_custom_kernel "${root_fs_dir}"
fi
# We "emerge --root=${root_fs_dir} --root-deps=rdeps --usepkgonly" all of the
# runtime packages for chrome os. This builds up a chrome os image from
# binary packages with runtime dependencies only. We use INSTALL_MASK to
# trim the image size as much as possible.
emerge_to_image --root="${root_fs_dir}" ${BASE_PACKAGE}
#
# Take a somewhat arbitrary number of post-emerge tasks and run them
# in parallel to speed things up.
#
# Generate the license credits page for the packages installed on this
# image in a location that will be used by Chrome.
sudo mkdir -p "${root_fs_dir}/opt/google/chrome/resources"
sudo "${GCLIENT_ROOT}/chromite/licensing/licenses" \
--board="${BOARD}" \
--log-level error \
--generate-licenses \
--output "${root_fs_dir}/opt/google/chrome/resources/about_os_credits.html"
# Remove unreferenced gconv charsets.
# gconv charsets are .so modules loaded dynamically by iconv_open(3),
# installed by glibc. Applications using them don't explicitly depend on them
# and we don't known which ones will be used until all the applications are
# installed. This script looks for the charset names on all the binaries
# installed on the the ${root_fs_dir} and removes the unreferenced ones.
sudo "${GCLIENT_ROOT}/chromite/bin/gconv_strip" "${root_fs_dir}"
# Run ldconfig to create /etc/ld.so.cache.
run_ldconfig "${root_fs_dir}"
# Set /etc/lsb-release on the image.
"${OVERLAY_CHROMEOS_DIR}/scripts/cros_set_lsb_release" \
--root="${root_fs_dir}" \
--board="${BOARD}"
# Create the boot.desc file which stores the build-time configuration
# information needed for making the image bootable after creation with
# cros_make_image_bootable.
create_boot_desc "${image_type}"
# Write out the GPT creation script.
# This MUST be done before writing bootloader templates else we'll break
# the hash on the root FS.
write_partition_script "${image_type}" \
"${root_fs_dir}/${PARTITION_SCRIPT_PATH}"
sudo chown root:root "${root_fs_dir}/${PARTITION_SCRIPT_PATH}"
# Populates the root filesystem with legacy bootloader templates
# appropriate for the platform. The autoupdater and installer will
# use those templates to update the legacy boot partition (12/ESP)
# on update.
# (This script does not populate vmlinuz.A and .B needed by syslinux.)
# Factory install shims may be booted from USB by legacy EFI BIOS, which does
# not support verified boot yet (see create_legacy_bootloader_templates.sh)
# so rootfs verification is disabled if we are building with --factory_install
local enable_rootfs_verification=
if [[ ${rootfs_verification_enabled} -eq ${FLAGS_TRUE} ]]; then
enable_rootfs_verification="--enable_rootfs_verification"
fi
local enable_bootcache=
if [[ ${bootcache_enabled} -eq ${FLAGS_TRUE} ]]; then
enable_bootcache="--enable_bootcache"
fi
${BUILD_LIBRARY_DIR}/create_legacy_bootloader_templates.sh \
--arch=${ARCH} \
--to="${root_fs_dir}"/boot \
--boot_args="${FLAGS_boot_args}" \
--enable_serial="${FLAGS_enable_serial}" \
--loglevel="${FLAGS_loglevel}" \
${enable_rootfs_verification} \
${enable_bootcache}
# Don't test the factory install shim
if ! should_build_image ${CHROMEOS_FACTORY_INSTALL_SHIM_NAME}; then
if [[ ${skip_test_image_content} -ne 1 ]]; then
# Check that the image has been correctly created.
test_image_content "$root_fs_dir"
fi
fi
# Clean up symlinks so they work on a running target rooted at "/".
# Here development packages are rooted at /usr/local. However, do not
# create /usr/local or /var on host (already exist on target).
setup_symlinks_on_root "/usr/local" "/var" "${stateful_fs_dir}"
# Our masking of files will implicitly leave behind a bunch of empty
# dirs. We can't differentiate between empty dirs we want and empty
# dirs we don't care about, so just prune ones we know are OK.
sudo find "${root_fs_dir}/usr/include" -depth -type d -exec rmdir {} + \
2>/dev/null || :
setup_etc_shadow "${root_fs_dir}"
# Create a package for the dev-only files installed in /usr/local of a base
# image. This package can later be downloaded with dev_install running from
# a base image.
# TODO(deymo): Move dev-only-extras.tbz2 outside packages. See
# crbug.com/448178 for details.
sudo tar -cf "${BOARD_ROOT}/packages/dev-only-extras.tbz2" -I pbzip2 \
-C "${root_fs_dir}/usr/local" .
# Zero rootfs free space to make it more compressible so auto-update
# payloads become smaller
zero_free_space "${root_fs_dir}"
cleanup_mounts
USE_DEV_KEYS=
if should_build_image ${CHROMEOS_FACTORY_INSTALL_SHIM_NAME}; then
USE_DEV_KEYS="--use_dev_keys"
fi
if [[ ${skip_kernelblock_install} -ne 1 ]]; then
# Place flags before positional args.
${SCRIPTS_DIR}/bin/cros_make_image_bootable "${BUILD_DIR}" \
${image_name} ${USE_DEV_KEYS} --adjust_part="${FLAGS_adjust_part}"
fi
}