d12c332018
This changes the scripts so that if some kernel files exists in external/kernel-headers/modified, that they will be preferred over the same files found in original. This is to support the case where the kernel headers cannot be taken without some small modifications. Included with this change, is a general cleanup of the python scripts. This also modifies the generate uapi headers script to indicate if the source of the modified headers has changed. Change-Id: Id13523b244ced52a2ecd9f1399c43996dd8296fa
244 lines
6.9 KiB
Bash
Executable File
244 lines
6.9 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright (C) 2013 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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### Usage: generate_uapi_headers.sh [<options>]
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###
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### This script is used to get a copy of the uapi kernel headers
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### from an android kernel tree and copies them into an android source
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### tree without any processing. The script also creates all of the
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### generated headers and copies them into the android source tree.
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###
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### Options:
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### --skip-generation
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### Skip the step that generates all of the include files.
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### --download-kernel
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### Automatically create a temporary git repository and check out the
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### Android kernel source code.
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### --use-kernel-dir <DIR>
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### Do not check out the kernel source, use the kernel directory
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### pointed to by <DIR>.
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# Terminate the script if any command fails.
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set -eE
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TMPDIR=""
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ANDROID_DIR=""
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KERNEL_VERSION="android-3.10"
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KERNEL_DIR=""
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KERNEL_DOWNLOAD=0
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ARCH_LIST=("arm" "arm64" "mips" "x86")
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ANDROID_KERNEL_DIR="external/kernel-headers/original"
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SKIP_GENERATION=0
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function cleanup () {
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if [[ "${TMPDIR}" =~ /tmp ]] && [[ -d "${TMPDIR}" ]]; then
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echo "Removing temporary directory ${TMPDIR}"
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rm -rf "${TMPDIR}"
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TMPDIR=""
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fi
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}
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function usage () {
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grep '^###' $0 | sed -e 's/^###//'
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}
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function copy_hdrs () {
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local src_dir=$1
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local tgt_dir=$2
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local dont_copy_dirs=$3
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mkdir -p ${tgt_dir}
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local search_dirs=()
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# This only works if none of the filenames have spaces.
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for file in $(ls -d ${src_dir}/* 2> /dev/null); do
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if [[ -d "${file}" ]]; then
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search_dirs+=("${file}")
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elif [[ -f "${file}" ]] && [[ "${file}" =~ .h$ ]]; then
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cp ${file} ${tgt_dir}
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fi
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done
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if [[ "${dont_copy_dirs}" == "" ]]; then
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for dir in "${search_dirs[@]}"; do
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copy_hdrs "${dir}" ${tgt_dir}/$(basename ${dir})
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done
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fi
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}
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function copy_if_exists () {
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local check_dir=$1
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local src_dir=$2
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local tgt_dir=$3
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mkdir -p ${tgt_dir}
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# This only works if none of the filenames have spaces.
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for file in $(ls -d ${src_dir}/* 2> /dev/null); do
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if [[ -f "${file}" ]] && [[ "${file}" =~ .h$ ]]; then
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# Check that this file exists in check_dir.
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header=$(basename ${file})
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if [[ -f "${check_dir}/${header}" ]]; then
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cp ${file} ${tgt_dir}
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fi
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fi
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done
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}
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function check_hdrs () {
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local src_dir=$1
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local tgt_dir=$2
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local kernel_dir=$3
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local search_dirs=()
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# This only works if none of the filenames have spaces.
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for file in $(ls -d ${src_dir}/* 2> /dev/null); do
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if [[ -d "${file}" ]]; then
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search_dirs+=("${file}")
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elif [[ -f "${file}" ]] && [[ "${file}" =~ .h$ ]]; then
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tgt_file=${tgt_dir}/$(basename ${file})
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if [[ -e ${tgt_file} ]] && ! diff "${file}" "${tgt_file}" > /dev/null; then
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if [[ ${file} =~ ${kernel_dir}/*(.+) ]]; then
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echo "New version of ${BASH_REMATCH[1]} found in kernel headers."
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else
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echo "New version of ${file} found in kernel headers."
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fi
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echo "This file needs to be updated manually."
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fi
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fi
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done
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for dir in "${search_dirs[@]}"; do
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check_hdrs "${dir}" ${tgt_dir}/$(basename ${dir}) "${kernel_dir}"
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done
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}
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trap cleanup EXIT
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# This automatically triggers a call to cleanup.
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trap "exit 1" HUP INT TERM TSTP
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while [ $# -gt 0 ]; do
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case "$1" in
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"--skip-generation")
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SKIP_GENERATION=1
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;;
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"--download-kernel")
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KERNEL_DOWNLOAD=1
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;;
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"--use-kernel-dir")
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if [[ $# -lt 2 ]]; then
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echo "--use-kernel-dir requires an argument."
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exit 1
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fi
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shift
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KERNEL_DIR="$1"
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KERNEL_DOWNLOAD=0
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;;
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"-h" | "--help")
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usage
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exit 1
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;;
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"-"*)
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echo "Error: Unrecognized option $1"
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usage
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exit 1
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;;
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*)
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echo "Error: Extra arguments on the command-line."
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usage
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exit 1
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;;
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esac
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shift
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done
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ANDROID_KERNEL_DIR="${ANDROID_BUILD_TOP}/${ANDROID_KERNEL_DIR}"
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if [[ "${ANDROID_BUILD_TOP}" == "" ]]; then
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echo "ANDROID_BUILD_TOP is not set, did you run lunch?"
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exit 1
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elif [[ ! -d "${ANDROID_KERNEL_DIR}" ]]; then
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echo "${ANDROID_BUILD_TOP} doesn't appear to be the root of an android tree."
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echo " ${ANDROID_KERNEL_DIR} is not a directory."
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exit 1
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fi
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if [[ -d "${KERNEL_DIR}/linux-stable" ]]; then
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src_dir="linux-stable"
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else
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src_dir="common"
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fi
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if [[ ${KERNEL_DOWNLOAD} -eq 1 ]]; then
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TMPDIR=$(mktemp -d /tmp/android_kernelXXXXXXXX)
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cd "${TMPDIR}"
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echo "Fetching android kernel source ${KERNEL_VERSION}"
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git clone https://android.googlesource.com/kernel/common.git
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cd "${src_dir}"
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git checkout "${KERNEL_VERSION}"
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KERNEL_DIR="${TMPDIR}"
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elif [[ "${KERNEL_DIR}" == "" ]]; then
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echo "Must specify one of --use-kernel-dir or --download-kernel."
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exit 1
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elif [[ ! -d "${KERNEL_DIR}" ]] || [[ ! -d "${KERNEL_DIR}/${src_dir}" ]]; then
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echo "The kernel directory $KERNEL_DIR or $KERNEL_DIR/${src_dir} does not exist."
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exit 1
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else
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cd "${KERNEL_DIR}/${src_dir}"
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fi
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if [[ ${SKIP_GENERATION} -eq 0 ]]; then
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# Build all of the generated headers.
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for arch in "${ARCH_LIST[@]}"; do
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echo "Generating headers for arch ${arch}"
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make ARCH=${arch} headers_install
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done
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fi
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cd ${ANDROID_BUILD_TOP}
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# Copy all of the include/uapi files to the kernel headers uapi directory.
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copy_hdrs "${KERNEL_DIR}/${src_dir}/include/uapi" "${ANDROID_KERNEL_DIR}/uapi"
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# Copy the staging files to uapi/linux.
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copy_hdrs "${KERNEL_DIR}/${src_dir}/drivers/staging/android/uapi" \
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"${ANDROID_KERNEL_DIR}/uapi/linux" "no-copy-dirs"
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# Copy the generated headers.
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copy_hdrs "${KERNEL_DIR}/${src_dir}/include/generated/uapi" \
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"${ANDROID_KERNEL_DIR}/uapi"
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for arch in "${ARCH_LIST[@]}"; do
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# Copy arch headers.
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copy_hdrs "${KERNEL_DIR}/${src_dir}/arch/${arch}/include/uapi" \
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"${ANDROID_KERNEL_DIR}/uapi/asm-${arch}"
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# Copy the generated arch headers.
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copy_hdrs "${KERNEL_DIR}/${src_dir}/arch/${arch}/include/generated/uapi" \
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"${ANDROID_KERNEL_DIR}/uapi/asm-${arch}"
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# Special copy of generated header files from arch/<ARCH>/generated/asm that
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# also exist in uapi/asm-generic.
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copy_if_exists "${KERNEL_DIR}/${src_dir}/include/uapi/asm-generic" \
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"${KERNEL_DIR}/${src_dir}/arch/${arch}/include/generated/asm" \
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"${ANDROID_KERNEL_DIR}/uapi/asm-${arch}/asm"
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done
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# Verify if modified headers have changed.
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check_hdrs "${KERNEL_DIR}/${src_dir}/include/scsi" \
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"${ANDROID_KERNEL_DIR}/scsi" \
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"${KERNEL_DIR}/${src_dir}"
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