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https://github.com/flatcar/scripts.git
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84348c39af
As of Linux 3.2 loopback supports discard by punching holes in the underlying file. This doesn't actually seem to impact things right now since we are writing to fresh filesystems but might as well do this to prevent wasted space from sneaking in later on.
107 lines
3.8 KiB
Bash
Executable File
107 lines
3.8 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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# Shell function library for functions specific to creating dev
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# images from base images. The main function for export in this
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# library is 'install_dev_packages'.
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# Modifies an existing image to add development packages.
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# Takes as an arg the name of the image to be created.
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install_dev_packages() {
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local image_name=$1
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info "Adding developer packages to ${image_name}"
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trap "unmount_image ; delete_prompt" EXIT
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mount_image "${BUILD_DIR}/${image_name}" "${root_fs_dir}" \
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"${stateful_fs_dir}" "${esp_fs_dir}"
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# Determine the root dir for developer packages.
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local root_dev_dir="${root_fs_dir}/usr/local"
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# Install developer packages described in chromeos-dev.
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emerge_to_image --root="${root_dev_dir}" coreos-base/coreos-dev
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# Copy over the libc debug info so that gdb
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# works with threads and also for a better debugging experience.
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sudo mkdir -p "${root_fs_dir}/usr/local/usr/lib/debug"
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pbzip2 -dc --ignore-trailing-garbage=1 "${LIBC_PATH}" | \
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sudo tar xpf - -C "${root_fs_dir}/usr/local/usr/lib/debug" \
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./usr/lib/debug/usr/${CHOST} --strip-components=6
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# Since gdb only looks in /usr/lib/debug, symlink the /usr/local
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# path so that it is found automatically.
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sudo ln -s /usr/local/usr/lib/debug "${root_fs_dir}/usr/lib/debug"
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# Install the bare necessary files so that the "emerge" command works
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sudo sed -i s,/usr/bin/wget,wget, \
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${root_fs_dir}/usr/share/portage/config/make.globals
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sudo mkdir -p ${root_fs_dir}/etc/make.profile
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# Re-run ldconfig to fix /etc/ldconfig.so.cache.
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sudo /sbin/ldconfig -r "${root_fs_dir}"
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# Mark the image as a developer image (input to chromeos_startup).
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# TODO(arkaitzr): Remove this file when applications no longer rely on it
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# (crosbug.com/16648). The preferred way of determining developer mode status
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# is via crossystem cros_debug?1 (checks boot args for "cros_debug").
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sudo mkdir -p "${root_fs_dir}/root"
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sudo touch "${root_fs_dir}/root/.dev_mode"
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# Additional changes to developer image.
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# Leave core files for developers to inspect.
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sudo touch "${root_fs_dir}/root/.leave_core"
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# This hack is only needed for devs who have old versions of glibc, which
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# filtered out ldd when cross-compiling. TODO(davidjames): Remove this hack
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# once everybody has upgraded to a new version of glibc.
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if [[ ! -x "${root_fs_dir}/usr/bin/ldd" ]]; then
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sudo cp -a "$(which ldd)" "${root_fs_dir}/usr/bin"
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fi
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# If vim is installed, then a vi symlink would probably help.
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if [[ -x "${root_fs_dir}/usr/local/bin/vim" ]]; then
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sudo ln -sf vim "${root_fs_dir}/usr/local/bin/vi"
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fi
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# If pygtk is installed in stateful-dev, then install a path.
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if [[ -d \
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"${root_fs_dir}/usr/local/lib/python2.6/site-packages/gtk-2.0" ]]; then
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sudo bash -c "\
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echo gtk-2.0 > \
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${root_fs_dir}/usr/local/lib/python2.6/site-packages/pygtk.pth"
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fi
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# File searches /usr/share by default, so add a wrapper script so it
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# can find the right path in /usr/local.
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local path="${root_fs_dir}/usr/local/bin/file"
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if [[ -x ${path} ]]; then
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sudo mv "${path}" "${path}.bin"
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sudo_clobber "${path}" <<EOF
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#!/bin/sh
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exec file.bin -m /usr/local/share/misc/magic.mgc "\$@"
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EOF
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sudo chmod a+rx "${path}"
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fi
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# Zero all fs free space, not fatal since it won't work on linux < 3.2
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sudo fstrim "${root_fs_dir}" || true
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sudo fstrim "${stateful_fs_dir}" || true
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info "Developer image built and stored at ${image_name}"
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cleanup_mounts
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trap - EXIT
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if [[ ${skip_kernelblock_install} -ne 1 ]]; then
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if should_build_image ${image_name}; then
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${SCRIPTS_DIR}/bin/cros_make_image_bootable "${BUILD_DIR}" \
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${image_name} --force_developer_mode
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fi
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fi
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}
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