104 lines
3.0 KiB
Bash
104 lines
3.0 KiB
Bash
# Copyright 2020 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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inherit kernel-build
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MY_P=linux-${PV%.*}
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GENPATCHES_P=genpatches-${PV%.*}-$((${PV##*.}+2))
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HARDENED_PATCH_VER="${PV}-hardened1"
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GENPATCHES_EXCLUDE="1500_XATTR_USER_PREFIX.patch
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1510_fs-enable-link-security-restrictions-by-default.patch
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2900_dev-root-proc-mount-fix.patch
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4200_fbcondecor.patch
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4400_alpha-sysctl-uac.patch
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4567_distro-Gentoo-Kconfig.patch"
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DESCRIPTION="Linux kernel built with Gentoo patches"
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HOMEPAGE="https://www.kernel.org/"
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SRC_URI+=" https://cdn.kernel.org/pub/linux/kernel/v$(ver_cut 1).x/${MY_P}.tar.xz
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https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.base.tar.xz
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https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.extras.tar.xz
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https://github.com/anthraxx/linux-hardened/releases/download/${HARDENED_PATCH_VER}/linux-hardened-${HARDENED_PATCH_VER}.patch"
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S=${WORKDIR}/${MY_P}
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LICENSE="GPL-2"
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KEYWORDS="~amd64"
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IUSE="debug extra-hardened"
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REQUIRED_USE="extra-hardened? ( !debug )"
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BDEPEND="
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!initramfs? ( sys-kernel/initramfs-image )
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app-crypt/sbsigntools
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sys-firmware/intel-microcode
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debug? ( dev-util/dwarves )"
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RDEPEND="
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!sys-kernel/gentoo-kernel:${SLOT}
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!sys-kernel/gentoo-kernel-bin:${SLOT}
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!sys-kernel/vanilla-kernel:${SLOT}
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!sys-kernel/vanilla-kernel-bin:${SLOT}"
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RESTRICT="strip"
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src_prepare() {
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# remove some genpatches causes conflicts with linux-hardened patch
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for patch in ${GENPATCHES_EXCLUDE}; do
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rm -f ${WORKDIR}/${patch}
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done
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# include linux-hardened patch with priority
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cp ${DISTDIR}/linux-hardened-${HARDENED_PATCH_VER}.patch ${WORKDIR}/1199_linux-hardened-${HARDENED_PATCH_VER}.patch
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# copy Clear Linux patches
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if [ -d "${FILESDIR}"/${MY_P} ]; then
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cp "${FILESDIR}"/${MY_P}/*.patch ${WORKDIR}/
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fi
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local PATCHES=(
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# meh, genpatches have no directory
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"${WORKDIR}"/*.patch
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)
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default
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# prepare the default config
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case ${ARCH} in
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amd64)
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cp "${FILESDIR}"/${MY_P}.amd64.config .config || die
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;;
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*)
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die "Unsupported arch ${ARCH}"
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;;
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esac
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local config_tweaks=(
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# shove arch under the carpet!
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-e 's:^CONFIG_DEFAULT_HOSTNAME=:&"gentoo":'
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# disable compression to allow stripping
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-e '/CONFIG_MODULE_COMPRESS/d'
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)
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use debug || config_tweaks+=(
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-e '/CONFIG_DEBUG_INFO/d'
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)
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use extra-hardened || config_tweaks+=(
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# disable signatures
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-e '/CONFIG_MODULE_SIG/d'
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-e '/CONFIG_SECURITY_LOCKDOWN/d'
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# Reqired to be disabled for out of tree kernel modules
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-e '/CONFIG_TRIM_UNUSED_KSYMS/d'
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)
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sed -i "${config_tweaks[@]}" .config || die
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sed -i "s@\-hardened1@@g" Makefile || die
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}
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src_install() {
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kernel-build_src_install
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if [[ -n "${UEFI_SB_KEY}" && -n "${UEFI_SB_CRT}" ]] ;then
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sbsign --key ${UEFI_SB_KEY} --cert ${UEFI_SB_CRT} --output ${D}/usr/src/linux-${PV}/arch/x86/boot/bzImage.signed \
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${D}/usr/src/linux-${PV}/arch/x86/boot/bzImage && \
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mv ${D}/usr/src/linux-${PV}/arch/x86/boot/bzImage.signed ${D}/usr/src/linux-${PV}/arch/x86/boot/bzImage
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fi
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}
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