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https://github.com/flatcar/scripts.git
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e39579a9d0
This script recently stopped working when we changed the kernel cmdline. Fix to be more robust by using rootdev instead. BUG=12780 TEST=Updated my kernel. Change-Id: I033f670c5db821863441ea1546c382fce3436c01 Review URL: http://codereview.chromium.org/6628027
152 lines
4.0 KiB
Bash
Executable File
152 lines
4.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2009-2010 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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# Script to update the kernel on a live running ChromiumOS instance.
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# --- BEGIN COMMON.SH BOILERPLATE ---
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# Load common CrOS utilities. Inside the chroot this file is installed in
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# /usr/lib/crosutils. Outside the chroot we find it relative to the script's
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# location.
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find_common_sh() {
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local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
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local path
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SCRIPT_ROOT=
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for path in "${common_paths[@]}"; do
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if [ -r "${path}/common.sh" ]; then
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SCRIPT_ROOT=${path}
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break
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fi
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done
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}
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find_common_sh
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. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
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# --- END COMMON.SH BOILERPLATE ---
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. "${SCRIPT_ROOT}/remote_access.sh"
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# Script must be run inside the chroot.
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restart_in_chroot_if_needed "$@"
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DEFINE_string board "" "Override board reported by target"
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DEFINE_string device "" "Override boot device reported by target"
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DEFINE_string partition "" "Override kernel partition reported by target"
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DEFINE_string arch "" "Override architecture reported by target"
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DEFINE_boolean modules false "Update modules on target"
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DEFINE_boolean firmware false "Update firmware on target"
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# Parse command line.
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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# Only now can we die on error. shflags functions leak non-zero error codes,
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# so will die prematurely if 'set -e' is specified before now.
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set -e
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function cleanup {
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cleanup_remote_access
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rm -rf "${TMP}"
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}
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function learn_device() {
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[ -n "${FLAGS_device}" ] && return
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remote_sh df /mnt/stateful_partition
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FLAGS_device=$(echo "${REMOTE_OUT}" | awk '/dev/ {print $1}' | sed s/1\$//)
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info "Target reports root device is ${FLAGS_device}"
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}
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# Ask the target what the kernel partition is
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function learn_partition() {
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[ -n "${FLAGS_partition}" ] && return
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! remote_sh rootdev
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if [ "${REMOTE_OUT}" == "/dev/dm-0" ]; then
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remote_sh ls /sys/block/dm-0/slaves
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REMOTE_OUT="/dev/${REMOTE_OUT}"
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fi
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if [ "${REMOTE_OUT}" == "${FLAGS_device}3" ]; then
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FLAGS_partition="${FLAGS_device}2"
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else
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FLAGS_partition="${FLAGS_device}4"
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fi
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if [ -z "${FLAGS_partition}" ]; then
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error "Partition required"
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exit 1
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fi
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info "Target reports kernel partition is ${FLAGS_partition}"
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}
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function make_kernelimage() {
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if [[ "${FLAGS_arch}" == "arm" ]]; then
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./build_kernel_image.sh --arch=arm \
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--root='/dev/${devname}${rootpart}' \
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--vmlinuz=/build/${FLAGS_board}/boot/vmlinux.uimg --to new_kern.bin
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else
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vbutil_kernel --pack new_kern.bin \
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--keyblock /usr/share/vboot/devkeys/kernel.keyblock \
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--signprivate /usr/share/vboot/devkeys/kernel_data_key.vbprivk \
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--version 1 \
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--config ../build/images/${FLAGS_board}/latest/config.txt \
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--bootloader /lib64/bootstub/bootstub.efi \
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--vmlinuz /build/${FLAGS_board}/boot/vmlinuz
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fi
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}
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function main() {
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trap cleanup EXIT
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TMP=$(mktemp -d /tmp/image_to_live.XXXX)
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remote_access_init
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learn_arch
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learn_board
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learn_device
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learn_partition
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remote_sh uname -r -v
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old_kernel="${REMOTE_OUT}"
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make_kernelimage
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remote_cp_to new_kern.bin /tmp
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remote_sh dd if=/tmp/new_kern.bin of="${FLAGS_partition}"
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if [[ ${FLAGS_modules} -eq ${FLAGS_TRUE} ]]; then
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echo "copying modules"
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tar -C /build/"${FLAGS_board}"/lib/modules -cjf /tmp/new_modules.tar .
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remote_cp_to /tmp/new_modules.tar /tmp/
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remote_sh mount -o remount,rw /
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remote_sh tar -C /lib/modules -xjf /tmp/new_modules.tar
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fi
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if [[ ${FLAGS_firmware} -eq ${FLAGS_TRUE} ]]; then
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echo "copying firmware"
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tar -C /build/"${FLAGS_board}"/lib/firmware -cjf /tmp/new_firmware.tar .
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remote_cp_to /tmp/new_firmware.tar /tmp/
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remote_sh mount -o remount,rw /
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remote_sh tar -C /lib/firmware -xjf /tmp/new_firmware.tar
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fi
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remote_reboot
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remote_sh uname -r -v
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info "old kernel: ${old_kernel}"
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info "new kernel: ${REMOTE_OUT}"
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}
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main "$@"
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