diff --git a/scripts/kernel_bump.sh b/scripts/kernel_bump.sh new file mode 100755 index 0000000000..5896bfc48f --- /dev/null +++ b/scripts/kernel_bump.sh @@ -0,0 +1,225 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-or-later +# +# Copyright (C) 2024 Olliver Schinagl + +set -eu +if [ -n "${DEBUG_TRACE_SH:-}" ] && \ + [ "${DEBUG_TRACE_SH:-}" != "${DEBUG_TRACE_SH#*"$(basename "${0}")"*}" ] || \ + [ "${DEBUG_TRACE_SH:-}" = 'all' ]; then + set -x +fi + +REQUIRED_COMMANDS=' + [ + basename + command + echo + exit + git + printf + set + shift +' + +_msg() +{ + _level="${1:?Missing argument to function}" + shift + + if [ "${#}" -le 0 ]; then + echo "${_level}: No content for this message ..." + return + fi + + echo "${_level}: ${*}" +} + +e_err() +{ + _msg 'err' "${*}" >&2 +} + +e_warn() +{ + _msg 'warning' "${*}" +} + +e_notice() +{ + _msg 'notice' "${*}" +} + +usage() +{ + echo "Usage: ${0}" + echo 'Helper script to bump the target kernel version, whilst keeping history.' + echo " -p Optional Platform name (e.g. 'ath79' [PLATFORM_NAME]" + echo " -s Source version of kernel (e.g. 'v6.1' [SOURCE_VERSION])" + echo " -t Target version of kernel (e.g. 'v6.6' [TARGET_VERSION]')" + echo + echo 'All options can also be passed in environment variables (listed between [BRACKETS]).' + echo 'Example: scripts/kernel_bump.sh -p realtek -s v6.1 -t v6.6' +} + +cleanup() +{ + trap - EXIT HUP INT QUIT ABRT ALRM TERM + + if [ -n "${initial_branch:-}" ] && \ + [ "$(git rev-parse --abbrev-ref HEAD)" != "${initial_branch:-}" ]; then + git switch "${initial_branch}" + fi +} + +init() +{ + initial_branch="$(git rev-parse --abbrev-ref HEAD)" + initial_commitish="$(git rev-parse HEAD)" + + trap cleanup EXIT HUP INT QUIT ABRT ALRM TERM +} + +do_source_target() +{ + _target_dir="${1:?Missing argument to function}" + _op="${2:?Missing argument to function}" + +} + +bump_kernel() +{ + platform_name="${platform_name##*'/'}" + + if [ -z "${platform_name:-}" ]; then + platform_name="${PWD##*'/'}" + fi + + if [ "${PWD##*'/'}" = "${platform_name}" ]; then + _target_dir='./' + else + _target_dir="target/linux/${platform_name}" + fi + + if [ ! -d "${_target_dir}/image" ]; then + e_err 'Cannot find target linux directory.' + exit 1 + fi + + git switch --force-create '__openwrt_kernel_files_mover' + + for _path in "${_target_dir}/"*; do + if [ ! -s "${_path}" ] || \ + [ "${_path}" = "${_path%%"-${source_version}"}" ]; then + continue + fi + + _target_path="${_path%%"-${source_version}"}-${target_version}" + if [ -s "${_target_path}" ]; then + e_err "Target '${_target_path}' already exists!" + exit 1 + fi + + git mv \ + "${_path}" \ + "${_target_path}" + done + + find "${_target_dir}" -iname "config-${source_version}" | while read -r _config; do + _path="${_config%%"/config-${source_version}"}" + git mv "${_config}" "${_path}/config-${target_version}" + done + + git commit \ + --signoff \ + --message "kernel/${platform_name}: Create kernel files for v${target_version} (from v${source_version})" \ + --message 'This is an automatically generated commit.' \ + --message 'During a `git bisect` session, `git bisect --skip` is recommended.' + + git checkout 'HEAD~' "${_target_dir}" + git commit \ + --signoff \ + --message "kernel/${platform_name}: Restore kernel files for v${source_version}" \ + --message "$(printf "This is an automatically generated commit which aids following Kernel patch history,\nas git will see the move and copy as a rename thus defeating the purpose.\n\nSee: https://lists.openwrt.org/pipermail/openwrt-devel/2023-October/041673.html\nfor the original discussion.")" + git switch "${initial_branch:?Unable to switch back to original branch. Quitting.}" + GIT_EDITOR=true git merge --no-ff '__openwrt_kernel_files_mover' + git branch --delete '__openwrt_kernel_files_mover' + + echo "Original commitish was '${initial_commitish}'." + echo 'Kernel bump complete. Remember to use `git log --follow`.' +} + +check_requirements() +{ + for _cmd in ${REQUIRED_COMMANDS}; do + if ! _test_result="$(command -V "${_cmd}")"; then + _test_result_fail="${_test_result_fail:-}${_test_result}\n" + else + _test_result_pass="${_test_result_pass:-}${_test_result}\n" + fi + done + + echo 'Available commands:' + # As the results contain \n, we expect these to be interpreted. + # shellcheck disable=SC2059 + printf "${_test_result_pass:-none\n}" + echo + echo 'Missing commands:' + # shellcheck disable=SC2059 + printf "${_test_result_fail:-none\n}" + echo + + if [ -n "${_test_result_fail:-}" ]; then + echo 'Command test failed, missing programs.' + test_failed=1 + fi +} + +main() +{ + while getopts 'hp:s:t:' _options; do + case "${_options}" in + 'h') + usage + exit 0 + ;; + 'p') + platform_name="${OPTARG}" + ;; + 's') + source_version="${OPTARG#v}" + ;; + 't') + target_version="${OPTARG#v}" + ;; + ':') + e_err "Option -${OPTARG} requires an argument." + exit 1 + ;; + *) + e_err "Invalid option: -${OPTARG}" + exit 1 + ;; + esac + done + shift "$((OPTIND - 1))" + + platform_name="${platform_name:-${PLATFORM_NAME:-}}" + source_version="${source_version:-${SOURCE_VERSION:-}}" + target_version="${target_version:-${TARGET_VERSION:-}}" + + if [ -z "${source_version:-}" ] || [ -z "${target_version:-}" ]; then + e_err "Source (${source_version}) and target (${target_version}) versions need to be defined." + exit 1 + fi + + check_requirements + + init + bump_kernel + cleanup +} + +main "${@}" + +exit 0