#!/bin/sh # SPDX-License-Identifier: GPL-2.0-or-later # Update the kernel headers copy from a kernel source tree if [ $# != 1 ] ; then echo "Usage: $0 <kernel dir>" exit 1 fi header_dir="$(dirname "$(realpath "$0")")/../include/linux" kernel_dir="$(realpath "$1")" # Bail out if the directory doesn't contain kernel sources line=$(head -3 "${kernel_dir}/Kbuild" 2>/dev/null | tail -1) if [ "$line" != "# Kbuild for top-level directory of the kernel" ] ; then echo "Directory ${kernel_dir} doesn't contain a kernel source tree" exit 1 fi if [ ! -e "${kernel_dir}/.git" ] ; then echo "Directory ${kernel_dir} doesn't contain a git tree" exit 1 fi # Check the kernel version, and reject dirty trees version=$(git -C "${kernel_dir}" describe --dirty) echo $version if echo "${version}" | grep -q dirty ; then echo "Kernel tree in ${kernel_dir} is dirty" exit 1 fi # Install the headers to a temporary directory install_dir=$(mktemp -d) if [ ! -d "${install_dir}" ] ; then echo "Failed to create temporary directory" exit 1 fi trap "rm -rf ${install_dir}" EXIT set -e make -C "${kernel_dir}" O="${install_dir}" headers_install set +e # Copy the headers headers=" drm/drm_fourcc.h linux/dma-buf.h linux/dma-heap.h linux/media-bus-format.h linux/media.h linux/rkisp1-config.h linux/udmabuf.h linux/v4l2-common.h linux/v4l2-controls.h linux/v4l2-mediabus.h linux/v4l2-subdev.h linux/videodev2.h " for header in $headers ; do name=$(basename "${header}") cp "${install_dir}/usr/include/${header}" "${header_dir}/${name}" done # The IPU3 header is a special case, as it's stored in staging. Handle it # manually. (cd "${install_dir}" ; "${kernel_dir}/scripts/headers_install.sh" \ "${kernel_dir}/drivers/staging/media/ipu3/include/uapi/intel-ipu3.h" \ "${header_dir}/intel-ipu3.h") # Update the README file cat <<EOF > "${header_dir}/README" # SPDX-License-Identifier: CC0-1.0 Files in this directory are imported from ${version} of the Linux kernel. Do not modify them manually. EOF # Cleanup rm -rf "${install_dir}" cat <<EOF ---------------------------------------------------------------------- Kernel headers updated. Please review and up-port local changes before committing. ---------------------------------------------------------------------- EOF