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0c1198c3bb
cgpt now supports generating hybrid MBRs and the classic style mbr.bin from any version of SYSLINUX should work the same with the hybrid MBR. The other code, gptmbr.bin, changes after SYSLINUX 3. Switching lets me play with different versions of SYSLINUX without breaking everything. With this change all images feature a hybrid MBR so the special case for some VM platforms has been removed.
81 lines
3.0 KiB
Bash
Executable File
81 lines
3.0 KiB
Bash
Executable File
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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create_base_image() {
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local image_name=$1
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local disk_layout=$2
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local disk_img="${BUILD_DIR}/${image_name}"
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local root_fs_dir="${BUILD_DIR}/rootfs"
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info "Using image type ${disk_layout}"
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"${BUILD_LIBRARY_DIR}/disk_util" --disk_layout="${disk_layout}" \
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format "${disk_img}"
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"${BUILD_LIBRARY_DIR}/disk_util" --disk_layout="${disk_layout}" \
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mount "${disk_img}" "${root_fs_dir}"
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trap "cleanup_mounts '${root_fs_dir}' && delete_prompt" EXIT
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# First thing first, install baselayout with USE=build to create a
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# working directory tree. Don't use binpkgs due to the use flag change.
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sudo -E USE=build "emerge-${BOARD}" --root="${root_fs_dir}" \
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--usepkg=n --buildpkg=n --oneshot --quiet --nodeps sys-apps/baselayout
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# FIXME(marineam): Work around glibc setting EROOT=$ROOT
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# https://bugs.gentoo.org/show_bug.cgi?id=473728#c12
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sudo mkdir -p "${root_fs_dir}/etc/ld.so.conf.d"
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# We "emerge --root=${root_fs_dir} --root-deps=rdeps --usepkgonly" all of the
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# runtime packages for chrome os. This builds up a chrome os image from
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# binary packages with runtime dependencies only. We use INSTALL_MASK to
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# trim the image size as much as possible.
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emerge_prod_gcc --root="${root_fs_dir}"
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emerge_to_image --root="${root_fs_dir}" ${BASE_PACKAGE}
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# Make sure profile.env and ld.so.cache has been generated
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sudo ROOT="${root_fs_dir}" env-update
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# Record directories installed to the state partition.
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# Explicitly ignore entries covered by existing configs.
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local tmp_ignore=$(awk '/^[dDfFL]/ {print "--ignore=" $2}' \
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"${root_fs_dir}"/usr/lib/tmpfiles.d/*.conf)
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sudo "${BUILD_LIBRARY_DIR}/gen_tmpfiles.py" --root="${root_fs_dir}" \
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--output="${root_fs_dir}/usr/lib/tmpfiles.d/base_image_var.conf" \
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${tmp_ignore} "${root_fs_dir}/var"
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if [[ "${disk_layout}" == *-usr ]]; then
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sudo "${BUILD_LIBRARY_DIR}/gen_tmpfiles.py" --root="${root_fs_dir}" \
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--output="${root_fs_dir}/usr/lib/tmpfiles.d/base_image_etc.conf" \
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${tmp_ignore} "${root_fs_dir}/etc"
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fi
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# Set /etc/lsb-release on the image.
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"${BUILD_LIBRARY_DIR}/set_lsb_release" \
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--root="${root_fs_dir}" \
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--board="${BOARD}"
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local boot_dir="/boot"
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if [[ "${disk_layout}" == *-usr ]]; then
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boot_dir="/usr/boot"
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fi
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${BUILD_LIBRARY_DIR}/configure_bootloaders.sh \
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--arch=${ARCH} \
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--disk_layout="${disk_layout}" \
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--boot_dir="${root_fs_dir}${boot_dir}" \
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--esp_dir="${root_fs_dir}"/boot/efi \
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--boot_args="${FLAGS_boot_args}"
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# Zero all fs free space to make it more compressible so auto-update
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# payloads become smaller, not fatal since it won't work on linux < 3.2
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sudo fstrim "${root_fs_dir}" || true
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if [[ "${disk_layout}" == *-usr ]]; then
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sudo fstrim "${root_fs_dir}/usr" || true
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else
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sudo fstrim "${root_fs_dir}/media/state" || true
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fi
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cleanup_mounts "${root_fs_dir}"
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trap - EXIT
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}
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