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# overloaded get_kernel_version function
get_kernel_version(){
pinfo "KERNEL_CURRENT_VERSION: ${KERNEL_CURRENT_VERSION}"
[ -z "${KERNEL_CURRENT_VERSION}" ] && perror "KERNEL_CURRENT_VERSION is not set, 'uname -r' output: '$(uname -r)'. Aborting..."
# set SYS_UTS_RELEASE and SYS_KERNEL correctly
declare -rg SYS_UTS_RELEASE="${KERNEL_CURRENT_VERSION}" 2>/dev/null
declare -rg SYS_KERNEL="$(echo ${KERNEL_CURRENT_VERSION} | grep -o -E '^[0-9\.]+')" 2>/dev/null
# KERNEL_NEW_VERSION is the same as KERNEL_CURRENT_VERSION
declare -rg KERNEL_NEW_VERSION="$KERNEL_CURRENT_VERSION" 2>/dev/null
# check linux headers directory
if [ -d "/usr/src/linux-headers-$(uname -r)" ]; then
declare -rg KERNEL_HEADERS_PATH="/usr/src/linux-headers-$(uname -r)" 2>/dev/null
else
# fetch source did not install the headers correctly.
perror "kernel headers for $KERNEL_CURRENT_VERSION not found! Re-build the kernel-system module"
fi
# check kernel modules/firmware directory
if [ -d "/lib/modules/${KERNEL_CURRENT_VERSION}" -a \
-d "/lib/firmware/${KERNEL_CURRENT_VERSION}" ]; then
# The expected paths exists, set KERNEL_BASE_DIR to /
declare -rg KERNEL_BASE_DIR="/" 2>/dev/null
else
perror "Could not find kernel modules / firmware for kernel version '$KERNEL_CURRENT_VERSION'. \
Does '/lib/modules/$KERNEL_CURRENT_VERSION' exist?"
fi
# print debug info
pdebug "SYS_UTS_RELEASE: '$SYS_UTS_RELEASE'"
pdebug "SYS_KERNEL: '$SYS_KERNEL'"
pdebug "KERNEL_NEW_VERSION: '$KERNEL_NEW_VERSION'"
pdebug "KERNEL_BASE_DIR: '$KERNEL_BASE_DIR'"
# set KERNEL_HEADERS_PATH
#get_kernel_headers_path
}
get_kernel_headers_path(){
# determine the path to the kernel headers we just installed
for DIR in $(list_content_package --dirs linux-headers-$(uname -r) ); do
if [[ "$DIR" =~ .*linux-headers-$(uname -r)$ ]]; then
# validate candidate
[ -e "$DIR/./include/generated/utsrelease.h" ] \
|| perror "Could not find utsrelease.h at '$DIR/./include/generated/utsrelease.h'"
# TODO: maybe check if SYS_UTS_RELEASE is the same as in the header.
# all good, we found it
pinfo "Kernel headers found at '$DIR'."
declare -rg KERNEL_HEADERS_PATH="$DIR"
break
fi
done
[ -z "$KERNEL_HEADERS_PATH" ] && perror "KERNEL_HEADERS_PATH was not set correctly."
}
fetch_source() {
# get the source from repos, use meta-package for now
pinfo "Installing kernel headers from the repositories for version '${KERNEL_CURRENT_VERSION}'"
# the actual install routine is done via config file
# through the REQUIRED_INSTALLED_PACKAGES variable
}
build() {
# simply copy the kernel from the running system
# to the build directory as it is.
local KERNEL_SYSTEM_PATH=""
# 1st "parse" /proc/cmdline for the kernel name
for i in $(cat /proc/cmdline); do
[[ "$i" =~ ^BOOT_IMAGE=.* ]] && local BOOT_IMAGE="$(basename $(echo $i|cut -c 12-))"
done
# exit if KERNEL_SYSTEM_FILENAME is empty, should not happen
[ -z "${BOOT_IMAGE}" ] && perror "Could not determine the full path to the running kernel..."
# now find it in KERNEL_SYSTEM_SEARCH_PATH
# NOTE: this variable should be expanded in the future if new locations are to be searched
local KERNEL_SYSTEM_SEARCH_PATH="/boot"
local KERNEL_SYSTEM_SEARCH_RESULTS="$(find "${KERNEL_SYSTEM_SEARCH_PATH}" -type f -iname "*${BOOT_IMAGE}*")"
if [ "$(echo $KERNEL_SYSTEM_SEARCH_RESULTS|wc -w)" -eq 1 ]; then
# we found the running kernel path
KERNEL_SYSTEM_PATH="${KERNEL_SYSTEM_SEARCH_RESULTS}"
else
# we found more than one, shouldn't happen...
perror "Found more than one kernel named '${BOOT_IMAGE}' inside '${KERNEL_SYSTEM_SEARCH_PATH}'."
fi
# at this point, we should definitly have KERNEL_SYSTEM_PATH, check just in case :)
[ -z "${KERNEL_SYSTEM_PATH}" ] && perror "KERNEL_SYSTEM_PATH isn't set, kernel not found. This shouldn't happen!"
pinfo "Live kernel path: $KERNEL_SYSTEM_PATH"
# copy kernel to build directory
[ -z "${KERNEL_TARGET_NAME}" ] && perror "KERNEL_TARGET_NAME not set, this mean something is wrong with remote/include/kernel.inc"
cp "${KERNEL_SYSTEM_PATH}" "${MODULE_BUILD_DIR}/${KERNEL_TARGET_NAME}" && \
pinfo "Copied kernel from '${KERNEL_SYSTEM_PATH}' to '${MODULE_BUILD_DIR}/${KERNEL_TARGET_NAME}'"
#[ -z "${KERNEL_BUILD_DIR}" ] && KERNEL_BUILD_DIR="${MODULE_BUILD_DIR}"
}
post_copy() {
:
#mkdir -p "$TARGET_BUILD_DIR/../kernel"
#cp -a "$MODULE_BUILD_DIR/kernel" "$TARGET_BUILD_DIR/../kernel/kernel" || perror "could not copy kernel to remote build dir."
}
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