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|
#!/bin/bash
set -e
usage () {
>&2 echo 'makekernel version #VERSION#'
>&2 echo 'usage:'
>&2 echo ' makekernel [ -a | --allowDownload ] [ -c $version | --compileVersion=$version ]:'
>&2 echo ' download and compile kernel'
>&2 echo ' -a | --allowDownload:'
>&2 echo ' allow to download complete source instead of patch if necessary'
>&2 echo ' -c | --compileVersion $version:'
>&2 echo ' download and compile version $version instead of most current stable'
>&2 echo ' makekernel ( -s | --showVersion ):'
>&2 echo ' show version of most current stable kernel'
exit 1
}
dlExVer () {
wget -nd "${proxyPrefix}$1.xz" || wget -nd "$1.xz"
wget -nd "${proxyPrefix}$1.sign" || wget -nd "$1.sign"
xz -d "$2.xz"
if ! gpg --verify $2{.sign,}
then
>&2 echo 'ERROR: Wrong signature! Closing.'
exit 1
fi
rm "$2.sign"
}
export MAKEFLAGS="-j$(nproc)"
. #ETCDIR#/makekernel.conf
if [ "$(whoami)" == "root" ]
then
>&2 echo 'ERROR: Do not call as root! Closing.'
exit 1
fi
if ! stty &> /dev/null
then
>&2 echo 'ERROR: Must be called from a terminal! Closing.'
>&2 echo 'Did you forget "-t" for ssh?'
exit 1
fi
eval set -- "$(
getopt -o ac:s \
--long allowDownload \
--long compileVersion: \
--long showVersion \
-n "$(basename "$0")" \
-- "$@" || echo usage
)"
allowDownload=false
forceVersion=false
showVersion=false
while true
do
case "$1" in
-a|--allowDownload)
${allowDownload} && usage
${showVersion} && usage
allowDownload=true
;;
-c|--compileVersion)
${forceVersion} && usage
${showVersion} && usage
curVer="$2"
forceVersion=true
shift
;;
-s|--showVersion)
${allowDownload} && usage
${forceVersion} && usage
${showVersion} && usage
showVersion=true
;;
--)
shift
break
;;
*)
>&2 echo "ERROR: Option \"$1\" unknown in the end! Closing."
usage
esac
shift
done
[ $# -ne 0 ] && usage
if ${showVersion}
then
mainVersion="$(
curl 'https://cdn.kernel.org/pub/linux/kernel/' 2> /dev/null | \
tr '>/' '\n' | \
grep '^v.*$' | \
sort -V | \
tail -n1
)"
curl "https://cdn.kernel.org/pub/linux/kernel/${mainVersion}/" 2> /dev/null | \
tr '<>' '\n\n' | \
grep '^linux-.*\.tar\.xz$' | \
sed 's/^linux-\(.*\)\.tar\.xz$/\1/' | \
sort -V | \
tail -n1
exit 0
fi
[ -z "${curVer}" ] && curVer="$("$0" -s)"
mainVer="$(
echo "${curVer}" | \
sed 's|^\([0-9]\+\.[0-9]\+\)\(\..*\)\?$|\1|'
)"
if [ "${curVer}" == "${mainVer}" ]
then
minPreVer='#invalid#'
mainPreVer="${curVer%.*}.$[${curVer##*.}-1]"
else
minPreVer="${mainVer}.$[${curVer##*.}-1]"
mainPreVer='#invalid#'
fi
# possible updates with patches from old sources are:
# - "recompile" old source
# - "minor" incremental (e.g. 4.7.2 -> 4.7.3)
# - make a "stablePatch" (e.g. 4.7 -> 4.7.3)
# - "major" incremental (e.g. 4.6 -> 4.7)
# alternative (if allowed):
# - download complete source
if [ -d "${kernelDir}/linux-${curVer}" ]
then
updateType='recompile'
patchSrc=''
dlSrc=''
elif [ -d "${kernelDir}/linux-${minPreVer}" ]
then
updateType='minor'
srcDir="linux-${minPreVer}"
patch="patch-${minPreVer}-${curVer##*.}"
patchSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/incr/${patch}"
dlSrc=''
elif [ -d "${kernelDir}/linux-${mainVer}" ]
then
updateType='stablePatch'
srcDir="linux-${mainVer}"
patch="patch-${curVer}"
patchSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/${patch}"
dlSrc=''
elif [ -d "${kernelDir}/linux-${mainPreVer}" ]
then
updateType='major'
srcDir="linux-${mainPreVer}"
patch="patch-${curVer}"
patchSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/${patch}"
dlSrc=''
elif ${allowDownload}
then
updateType='download'
patchSrc=''
dlSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/linux-${curVer}.tar"
else
>&2 echo 'No patch method available and download of complete source not allowed! Closing.'
usage
fi
cd "${kernelDir}"
echo "update type: ${updateType}"
if [ -n "${patchSrc}" ]
then
dlExVer "${patchSrc}" "${patch}"
cp -r "${srcDir}" "linux-${curVer}"
cd "linux-${curVer}"
patch -p1 -i "../${patch}"
rm "../${patch}"
elif [ -n "${dlSrc}" ]
then
dlExVer "${dlSrc}" "linux-${curVer}.tar"
tar -xf "linux-${curVer}.tar"
rm "linux-${curVer}.tar"
fi
cd "${kernelDir}/linux-${curVer}"
[ ! -r .config ] && zcat /proc/config.gz > .config
make clean
make oldconfig
make
grep -q '^# CONFIG_MODULES is not set$' .config || make modules_install
kernelImg="$(find ${kernelDir}/linux-${curVer}/arch/ -type f -iname '*image')"
if [ $(echo "${kernelImg}" | wc -l) -ne 1 ]
then
>&2 echo 'ERROR: Did not find exactly one compiled kernel image:'
>&2 echo "${kernelImg}"
>&2 echo 'Closing.'
exit 1
fi
echo 'becoming root ...'
su -c ' \
. #ETCDIR#/makekernel.conf && \
before_install_hook && \
install -m644 --owner=root "'"${kernelImg}"'" "/boot/vmlinuz-'"${curVer}"'" && \
grub-mkconfig -o /boot/grub/grub.cfg && \
after_install_hook \
'
echo 'Success.'
|
