#!/bin/bash
#
# Copyright (c) 2021 Wind River Systems, Inc.
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. The ASF licenses this
# file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#

# The only parameter is the name of the new directory that will contain
# the extracted source code. Be aware that this new directory will be
# created in the same directory as where this script is located when
# building.
# Tools needed: tar/sed

KERNEL_HEAD_COMMIT=288dde44f13d9c4e997737c1dfbe4d835d28868e
DEBIAN_FILE=linux_5.10.28-1.debian.tar.xz

tar xvf linux-yocto-${KERNEL_HEAD_COMMIT}.tar.gz
if [ $? -ne 0 ]
then
    echo "tar failed: linux-yocto source!"
    exit 1
fi
mv linux-yocto-${KERNEL_HEAD_COMMIT} $1

cd $1
tar xvf ../${DEBIAN_FILE}
if [ $? -ne 0 ]
then
    echo "tar failed: debian folder for kernel!"
    exit 1
fi

# The debian folder is written to build "linux". If use this folder
# to build similar things for kernel-rt, all the packages are renamed
# from "linux-xxx" to "linux-rt-xxx". Here replace those packages'
# name in those files of the debian folder which will affect building.
SED_LIST=" ./debian/bin ./debian/rules.d/tools/perf ./debian/rules ./debian/rules.real ./debian/signing_templates ./debian/templates ./debian/control"
sed -i "s/linux-headers/linux-rt-headers/g" `grep -rl "linux-headers" $SED_LIST`
sed -i "s/linux-image/linux-rt-image/g" `grep -rl "linux-image" $SED_LIST`
sed -i "s/linux-perf/linux-rt-perf/g" `grep -rl "linux-perf" $SED_LIST`
sed -i "s/linux-config/linux-rt-config/g" `grep -rl "linux-config" $SED_LIST`
sed -i "s/linux-kbuild/linux-rt-kbuild/g" `grep -rl "linux-kbuild" $SED_LIST`
sed -i "s/linux-libc-dev/linux-rt-libc-dev/g" `grep -rl "linux-libc-dev" $SED_LIST`
sed -i "s/linux-source/linux-rt-source/g" `grep -rl "linux-source" $SED_LIST`
sed -i "s/linux-support/linux-rt-support/g" `grep -rl "linux-support" $SED_LIST`

# The abiname is changed from "6" to "6-rt", so replace "5.10.0-6" with
# "5.10.0-6-rt" in init control file.
sed -i "s/5.10.0-6/5.10.0-6-rt/g" ./debian/control

# This is the only file name that involves renaming in debian
# folder.
mv debian/linux-image.NEWS debian/linux-rt-image.NEWS