Add support for a kernel headers package
Add a command-line switch -H that can be used to generate a headers
package for the kernel build. Should only be used in -k mode.
Change-Id: I35697bf6daeb079d579b2a1cf89f5aba453b7266
Reviewed-on: https://cos-review.googlesource.com/c/cos/tools/+/25240
Reviewed-by: Meena Shanmugam <meenashanmugam@google.com>
Cloud-Build: GCB Service account <228075978874@cloudbuild.gserviceaccount.com>
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
diff --git a/src/cmd/cos_kernel_devenv/devenv.sh b/src/cmd/cos_kernel_devenv/devenv.sh
index e2ddee4..a6c193b 100755
--- a/src/cmd/cos_kernel_devenv/devenv.sh
+++ b/src/cmd/cos_kernel_devenv/devenv.sh
@@ -20,6 +20,7 @@
BUILD_DIR="" # based on RELEASE_ID
KERNEL_CONFIG="defconfig"
BUILD_DEBUG_PACKAGE="false"
+BUILD_HEADERS_PACKAGE="false"
CLEAN_BEFORE_BUILD="false"
BOARD=""
@@ -306,6 +307,32 @@
}
export -f kmake
+
+tar_kernel_headers() {
+ local -r version=$(kmake "$@" kernelrelease)
+ local -r tmpdir="$(mktemp -d)"
+ (
+ find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl
+ find arch/*/include include scripts -type f -o -type l
+ find "arch/${KERNEL_ARCH}" -name module.lds -o -name Kbuild.platforms -o -name Platform
+ find "arch/${KERNEL_ARCH}" -name include -o -name scripts -type d | while IFS='' read -r line; do
+ find "${line}" -type f
+ done
+ ) > "${tmpdir}/hdrsrcfiles"
+
+ find "arch/${KERNEL_ARCH}/include" Module.symvers include scripts -type f > "${tmpdir}/hdrobjfiles"
+ local -r destdir="${tmpdir}/headers_tmp/usr/src/linux-headers-${version}"
+ mkdir -p "${destdir}"
+ tar -c -f - -T "${tmpdir}/hdrsrcfiles" | tar -xf - -C "${destdir}"
+ tar -c -f - -T "${tmpdir}/hdrobjfiles" | tar -xf - -C "${destdir}"
+ rm "${tmpdir}/hdrsrcfiles" "${tmpdir}/hdrobjfiles"
+
+ cp .config "${destdir}/.config"
+
+ tar -C "${tmpdir}/headers_tmp" -c -z -f "cos-kernel-headers-${version}-${KERNEL_ARCH}.tgz" .
+ rm -rf "${tmpdir}"
+}
+
kernel_build() {
local -r tmproot_dir="$(mktemp -d)"
local image_target
@@ -353,6 +380,10 @@
tar -c -J -f "cos-kernel-${version}-${KERNEL_ARCH}.txz" -C "${tmproot_dir}" boot/ lib/
rm -rf "${tmproot_dir}"
+
+ if [[ "${BUILD_HEADERS_PACKAGE}" = "true" ]]; then
+ tar_kernel_headers
+ fi
}
module_build() {
@@ -362,7 +393,7 @@
usage() {
cat 1>&2 <<__EOUSAGE__
-Usage: $0 [-k | -m | -i] [-cd] [-A <x86|arm64>] [-C <kernelconfig>]" 1>&2
+Usage: $0 [-k | -m | -i] [-cdH] [-A <x86|arm64>] [-C <kernelconfig>]" 1>&2
[-B <build> -b <board> | -R <release> | -G <bucket>]
[-t <toolchain_version>] [VAR=value ...] [target ...]
@@ -373,13 +404,15 @@
-C <config> kernel config target. Example: lakitu_defconfig
-G <bucket> seed the toolchain and kernel headers from the custom
GCS bucket <bucket>. Directory structure needs to conform
- to the COS standard.
+ to the COS standard.
+ -H create a package with kernel headers for the respective
+ kernel package. Should be used only with -k option.
-R <release> seed the toolchain and kernel headers from the
specified official COS release. Example: 16442.0.0
-b <board> specify board for -B argument. Example: lakitu
-c perform mrproper step when building a kernel package.
Should be used only with -k option.
- -d create a pakcage with debug symbols for the respective
+ -d create a package with debug symbols for the respective
kernel package. Should be used only with -k option.
-h show this message.
-i invoke interactive shell with kernel development
@@ -392,7 +425,7 @@
-t seed the toolchain from the Chromium OS upstream.
Example: 2021.06.26.094653
__EOUSAGE__
-
+
exit $RETCODE_ERROR
}
@@ -400,12 +433,13 @@
local build_target=""
local custom_bucket=""
get_cos_tools_bucket
- while getopts "A:B:C:G:R:b:cdhikmt:" o; do
+ while getopts "A:B:C:G:HR:b:cdhikmt:" o; do
case "${o}" in
A) KERNEL_ARCH=${OPTARG} ;;
B) BUILD_ID=${OPTARG} ;;
C) KERNEL_CONFIG=${OPTARG} ;;
G) custom_bucket=${OPTARG} ;;
+ H) BUILD_HEADERS_PACKAGE="true" ;;
R) RELEASE_ID=${OPTARG} ;;
b) BOARD=${OPTARG} ;;
c) CLEAN_BEFORE_BUILD="true" ;;
