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# $Id$
# Maintainer: Joan Figueras <ffigue at gmail dot com>
# Contributor: Yoshi2889 <rick.2889 at gmail dot com>
# Contributor: Tobias Powalowski <tpowa@archlinux.org>
# Contributor: Thomas Baechler <thomas@archlinux.org>
##
## The following variables take integer value, change at your wish
##
## Config you want to build kernel:
## 1 xanmod's provided (default)
## 2 Archlinux stock
_configuration=1
##
## Look inside 'choose-gcc-optimization.sh' to choose your microarchitecture
## Only valid numbers are: 0 to 22
## Default is: 0 => generic
## Good option if your package is for one machine: 22 => native
_microarchitecture=0
##
pkgbase=linux-xanmod-lts
_srcname=linux
pkgver=4.14.15
xanmod=20
pkgrel=1
arch=('x86_64')
url="http://www.xanmod.org/"
license=('GPL2')
makedepends=('xmlto' 'kmod' 'inetutils' 'bc' 'libelf')
options=('!strip')
# Arch stock configuration files are directly pulled from a specific trunk
arch_config_trunk=d9eb6c8046bcd2265f6bb6e2a777f4752a7ebc2f
# Arch additional patches
arch_patches=(
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
0002-dccp-CVE-2017-8824-use-after-free-in-DCCP-code.patch
0003-xfrm-Fix-stack-out-of-bounds-read-on-socket-policy-l.patch
0004-drm-i915-edp-Only-use-the-alternate-fixed-mode-if-it.patch
)
source=(https://github.com/xanmod/linux/archive/${pkgver}-xanmod${xanmod}.tar.gz
'60-linux.hook' # pacman hook for depmod
'90-linux.hook' # pacman hook for initramfs regeneration
"$pkgbase.preset" # standard config files for mkinitcpio ramdisk
'choose-gcc-optimization.sh'
)
for _patch in ${arch_patches[@]} ; do source+=("${_patch}::https://git.archlinux.org/svntogit/packages.git/plain/trunk/${_patch}?h=packages/linux-lts&id=${arch_config_trunk}") ; done
source_x86_64=("config::https://git.archlinux.org/svntogit/packages.git/plain/trunk/config?h=packages/linux-lts&id=${arch_config_trunk}")
sha256sums=('819c76bd7d21a14b8da8f33445dbd009eb6d9bbe50dcf9770f50258f04159358'
'ae2e95db94ef7176207c690224169594d49445e04249d2499e9d2fbc117a0b21'
'75f99f5239e03238f88d1a834c50043ec32b1dc568f2cc291b07d04718483919'
'ad6344badc91ad0630caacde83f7f9b97276f80d26a20619a87952be65492c65'
'bae7b9253512ef5724629738bfd4460494a08566f8225b9d8ec544ea8cc2f3a5'
'36b1118c8dedadc4851150ddd4eb07b1c58ac5bbf3022cc2501a27c2b476da98'
'5694022613bb49a77d3dfafdd2e635e9015e0a9069c58a07e99bdc5df6520311'
'2f46093fde72eabc0fd25eff5065d780619fc5e7d2143d048877a8220d6291b0'
'6364edabad4182dcf148ae7c14d8f45d61037d4539e76486f978f1af3a090794')
sha256sums_x86_64=('c645053c4525a1a70d5c10b52257ac136da7e9059b6a4a566a857a3d42046426')
_kernelname=${pkgbase#linux}
prepare() {
cd "${srcdir}/linux-${pkgver}-xanmod${xanmod}"
case $_configuration in
1) true ; answer="Xanmod" ;;
2) cat "${srcdir}/config" > ./.config ; answer="Archlinux" ;;
*) echo "Variable _configuration should be 1 or 2"; exit 1 ;;
esac
warning "This package is now totally non-interactive!!!!!"
msg "Building this kernel with configuration provided by: $answer"
sleep 5
warning "To change this modify _configuration variable in PKGBUILD"
if [ "${_kernelname}" != "" ]; then
#sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
sed -i "s|CONFIG_LOCALVERSION_AUTO=.*|CONFIG_LOCALVERSION_AUTO=n|" ./.config
fi
# CONFIG_STACK_VALIDATION gives better stack traces. Also is enabled in all official kernel packages by Archlinux team
sed -i "s|# CONFIG_STACK_VALIDATION.*|CONFIG_STACK_VALIDATION=y|" ./.config
# Archlinux patches
# [0] disable USER_NS for non-root users by default
# [1] https://bugs.archlinux.org/task/56575
# [2] https://nvd.nist.gov/vuln/detail/CVE-2017-8824
for n in ${arch_patches[@]} ; do patch -Np1 -i ../$n ; done
# CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'
sed -i "s|# CONFIG_RETPOLINE.*|CONFIG_RETPOLINE=y|" ./.config
# CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'
sed -i "s|# CONFIG_PAGE_TABLE_ISOLATION.*|CONFIG_PAGE_TABLE_ISOLATION=y|" ./.config
# Enable IKCONFIG following Arch's philosophy
sed -i "s|# CONFIG_IKCONFIG.*|CONFIG_IKCONFIG=y\nCONFIG_IKCONFIG_PROC=y|" ./.config
# EXPERIMENTAL: let's user choose microarchitecture optimization in GCC
${srcdir}/choose-gcc-optimization.sh $_microarchitecture
# set extraversion to pkgrel
sed -ri "s|^(EXTRAVERSION =).*|\1 -${pkgrel}|" Makefile
# don't run depmod on 'make install'. We'll do this ourselves in packaging
sed -i '2iexit 0' scripts/depmod.sh
# get kernel version
make prepare
# load configuration
# Configure the kernel. Replace the line below with one of your choice.
#make menuconfig # CLI menu for configuration
#make nconfig # new CLI menu for configuration
#make xconfig # X-based configuration
#make oldconfig # using old config from previous kernel version
# ... or manually edit .config
# rewrite configuration
yes "" | make config >/dev/null
}
build() {
cd "${srcdir}/linux-${pkgver}-xanmod${xanmod}"
make ${MAKEFLAGS} LOCALVERSION= bzImage modules
}
_package() {
pkgdesc="The Linux kernel and modules with Xanmod patches"
depends=('coreutils' 'linux-firmware' 'kmod' 'mkinitcpio>=0.7')
optdepends=('crda: to set the correct wireless channels of your country')
backup=("etc/mkinitcpio.d/${pkgbase}.preset")
install=linux.install
cd "${srcdir}/linux-${pkgver}-xanmod${xanmod}"
# get kernel version
_kernver="$(make LOCALVERSION= kernelrelease)"
_basekernel=${_kernver%%-*}
_basekernel=${_basekernel%.*}
mkdir -p "${pkgdir}"/{boot,usr/lib/modules}
make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}/usr" modules_install
cp arch/x86/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
# make room for external modules
local _extramodules="extramodules-${_basekernel}${_kernelname:--ARCH}"
ln -s "../${_extramodules}" "${pkgdir}/usr/lib/modules/${_kernver}/extramodules"
# add real version for building modules and running depmod from hook
echo "${_kernver}" |
install -Dm644 /dev/stdin "${pkgdir}/usr/lib/modules/${_extramodules}/version"
# remove build and source links
rm "${pkgdir}"/usr/lib/modules/${_kernver}/{source,build}
# now we call depmod...
depmod -b "${pkgdir}/usr" -F System.map "${_kernver}"
# add vmlinux
install -Dt "${pkgdir}/usr/lib/modules/${_kernver}/build" -m644 vmlinux
# sed expression for following substitutions
local _subst="
s|%PKGBASE%|${pkgbase}|g
s|%KERNVER%|${_kernver}|g
s|%EXTRAMODULES%|${_extramodules}|g
"
# hack to allow specifying an initially nonexisting install file
sed "${_subst}" "${startdir}/${install}" > "${startdir}/${install}.pkg"
true && install=${install}.pkg
# install mkinitcpio preset file
sed "${_subst}" ../${pkgbase}.preset |
install -Dm644 /dev/stdin "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"
# install pacman hooks
sed "${_subst}" ../60-linux.hook |
install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/60-${pkgbase}.hook"
sed "${_subst}" ../90-linux.hook |
install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/90-${pkgbase}.hook"
}
_package-headers() {
pkgdesc="Header files and scripts for building modules for Xanmod Linux kernel"
cd "${srcdir}/linux-${pkgver}-xanmod${xanmod}"
local _builddir="${pkgdir}/usr/lib/modules/${_kernver}/build"
install -Dt "${_builddir}" -m644 Makefile .config Module.symvers
install -Dt "${_builddir}/kernel" -m644 kernel/Makefile
mkdir "${_builddir}/.tmp_versions"
cp -t "${_builddir}" -a include scripts
install -Dt "${_builddir}/arch/x86" -m644 arch/x86/Makefile
install -Dt "${_builddir}/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s
cp -t "${_builddir}/arch/x86" -a arch/x86/include
install -Dt "${_builddir}/drivers/md" -m644 drivers/md/*.h
install -Dt "${_builddir}/net/mac80211" -m644 net/mac80211/*.h
# http://bugs.archlinux.org/task/9912
install -Dt "${_builddir}/drivers/media/dvb-core" -m644 drivers/media/dvb-core/*.h
# http://bugs.archlinux.org/task/13146
install -Dt "${_builddir}/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h
# http://bugs.archlinux.org/task/20402
install -Dt "${_builddir}/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
install -Dt "${_builddir}/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
install -Dt "${_builddir}/drivers/media/tuners" -m644 drivers/media/tuners/*.h
# add xfs and shmem for aufs building
mkdir -p "${_builddir}"/{fs/xfs,mm}
# copy in Kconfig files
find . -name Kconfig\* -exec install -Dm644 {} "${_builddir}/{}" \;
# add objtool for external module building and enabled VALIDATION_STACK option
install -Dt "${_builddir}/tools/objtool" tools/objtool/objtool
# remove unneeded architectures
local _arch
for _arch in "${_builddir}"/arch/*/; do
[[ ${_arch} == */x86/ ]] && continue
rm -r "${_arch}"
done
# remove files already in linux-docs package
rm -r "${_builddir}/Documentation"
# remove now broken symlinks
find -L "${_builddir}" -type l -printf 'Removing %P\n' -delete
# Fix permissions
chmod -R u=rwX,go=rX "${_builddir}"
# strip scripts directory
local _binary _strip
while read -rd '' _binary; do
case "$(file -bi "${_binary}")" in
*application/x-sharedlib*) _strip="${STRIP_SHARED}" ;; # Libraries (.so)
*application/x-archive*) _strip="${STRIP_STATIC}" ;; # Libraries (.a)
*application/x-executable*) _strip="${STRIP_BINARIES}" ;; # Binaries
*) continue ;;
esac
/usr/bin/strip ${_strip} "${_binary}"
done < <(find "${_builddir}/scripts" -type f -perm -u+w -print0 2>/dev/null)
}
pkgname=("${pkgbase}" "${pkgbase}-headers")
for _p in ${pkgname[@]}; do
eval "package_${_p}() {
$(declare -f "_package${_p#${pkgbase}}")
_package${_p#${pkgbase}}
}"
done
# vim:set ts=8 sts=2 sw=2 et:
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