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fetch_source() {
# get the source according to the distro
if [ "x$PACKET_MANAGER" == "xapt" ]; then
pdebug "apt-ing kernel source"
apt-get source linux-image-${KERNEL_VERSION}
[ ! -e ksrc ] && ln -s $(ls -d linux-*/) ksrc
elif [ "x$PACKET_MANAGER" == "xzypper" ]; then
pdebug "zypping kernel source"
zypper --no-refresh install -y kernel-source
# find src directory
local SOURCE_DIR=$(rpm -ql kernel-source |grep -E -o '^/.*src/linux-[^/]+/' |head -1)
[ -z "${SOURCE_DIR}" ] && perror "Could not determine directory of kernel source..."
ln -sf "${SOURCE_DIR}" ksrc
else
pdebug "Packet manager not determined!"
fi
}
build() {
local TARGET_CONFIG_FILE="openslx.config"
[ -e "${TARGET_CONFIG_FILE}" ] && rm -f "${TARGET_CONFIG_FILE}"
# update config and copy to ksrc
pinfo "Updating kernel config..."
update_config
cp "${TARGET_CONFIG_FILE}" ksrc/.config
# make kernel with the new config
cd ksrc || perror "Could not cd to ksrc, was the kernel source fetched properly?"
pinfo "Preparing kernel for new config ('make oldconfig')"
yes n | make oldconfig || perror "make oldconfig failed"
pinfo "Compiling kernel... (this will take some time)"
make || perror "make failed"
# install modules to build directory
pinfo "Installing kernel modules..."
make INSTALL_MOD_PATH="${MODULE_BUILD_DIR}" INSTALL_MOD_STRIP=1 modules_install || perror "make modules_install failed in ${MODULE_BUILD_DIR}"
cd - 2> /dev/null
# copy kernel to build
cp ksrc/arch/x86/boot/bzImage "${MODULE_BUILD_DIR}/${KERNEL_TARGET_NAME}"
pinfo "Kernel was successfully built at ${MODULE_BUILD_DIR}/${KERNEL_TARGET_NAME}"
[ -z "${KERNEL_BUILD_DIR}" ] && KERNEL_BUILD_DIR="${MODULE_BUILD_DIR}"
}
post_copy() {
:
}
# helper function to update the current kernel config with our parameters
update_config() {
# first we need to update the current config
local BASE_CONFIG_FILE="/boot/config-$(uname -r)"
[ -e "${BASE_CONFIG_FILE}" ] || perror "$BASE_CONFIG_FILE could not be found! This should not happen."
# check for our wanted config parameter
local OPENSLX_WANTED_CONFIG="${ROOT_DIR}/data/kernel.wanted.config"
[ -e "${OPENSLX_WANTED_CONFIG}" ] || perror "$OPENSLX_WANTED_CONFIG does not exist! Please add a list of wanted kernel config parameters."
# copy basic config file
cp "$BASE_CONFIG_FILE" "$TARGET_CONFIG_FILE"
for WANTED_CONFIG in $(cat $OPENSLX_WANTED_CONFIG|sort -u); do
local CONFIG_PARAM_NAME=$(echo $WANTED_CONFIG | awk -F "=" '{print $1}')
local SEARCH_RESULT=$(grep "^$CONFIG_PARAM_NAME=" "$BASE_CONFIG_FILE")
#echo "Process: $SEARCH_RESULT"
# analyse results
if [ "x$SEARCH_RESULT" == "x" ]; then
# no match, add it
echo $WANTED_CONFIG >> $TARGET_CONFIG_FILE
else
# match, change to our setting if they differ
if [ "x${SEARCH_RESULT: -1}" != "x${WANTED_CONFIG: -1}" ]; then
sed -i "s/$SEARCH_RESULT/$WANTED_CONFIG/" "$TARGET_CONFIG_FILE"
fi
fi
done
}
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