utils/update-kernel-headers.sh


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#!/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="$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 [ ! -d "${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