mirror of
https://github.com/linuxkit/linuxkit.git
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bb49cab9c2
The aim of the split kernel is to introduce a level of intra-kernel protection into the kernel so that, amongst other things, it can offer lifetime guarantees over kernel code and data integrity. These patches only wire in the kernel build from a 4.11-rc3 snapshot. The userspace tools will follow shortly. Instructions came via https://github.com/linux-okernel/linux-okernel (linux-okernel branch) and via @edwards-n and @t-koulouris. The build can be done via `cd projects/okernel && make`. Signed-off-by: Anil Madhavapeddy <anil@docker.com>
56 lines
2.3 KiB
Docker
56 lines
2.3 KiB
Docker
FROM mobylinux/alpine-build-kernel:0e893fbf6fa7638d2f23354de03ea11017bb8065@sha256:3ef3f9d11f0802b759dbd9c43a7706cf0ec37263c99ae90e2b10c29ea85739fa
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ARG KERNEL_PREFIX
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ARG KERNEL_VERSION
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ARG DEBUG=0
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ENV KERNEL_SOURCE=https://github.com/linux-okernel/linux-okernel/archive/ok-${KERNEL_VERSION}.tar.gz
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RUN curl -fsSL -o linux-${KERNEL_PREFIX}${KERNEL_VERSION}.tar.gz ${KERNEL_SOURCE}
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RUN cat linux-${KERNEL_PREFIX}${KERNEL_VERSION}.tar.gz | tar --absolute-names -xz && mv /linux-${KERNEL_PREFIX}${KERNEL_VERSION} /linux
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# NOTE: This currently re-uses the 4.9 kernel config with CONFIG_OKERNEL set
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COPY kernel_config.okernel /linux/arch/x86/configs/x86_64_defconfig
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#COPY kernel_config.debug /linux/debug_config
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RUN if [ $DEBUG -ne "0" ]; then \
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sed -i 's/CONFIG_PANIC_ON_OOPS=y/# CONFIG_PANIC_ON_OOPS is not set/' /linux/arch/x86/configs/x86_64_defconfig; \
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cat /linux/debug_config >> /linux/arch/x86/configs/x86_64_defconfig; \
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fi
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# Apply local patches
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# COPY patches-4.10 /patches
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#RUN cd /linux && \
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# set -e && for patch in /patches/*.patch; do \
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# echo "Applying $patch"; \
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# patch -p1 < "$patch"; \
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# done
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RUN cd /linux && \
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make defconfig && \
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make oldconfig && \
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make -j "$(getconf _NPROCESSORS_ONLN)" KCFLAGS="-fno-pie"
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RUN cd /linux && \
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make INSTALL_MOD_PATH=/tmp/kernel-modules modules_install && \
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( DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
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cd /tmp/kernel-modules/lib/modules/$DVER && \
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rm build source && \
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ln -s /usr/src/linux-headers-$DVER build ) && \
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mkdir -p /tmp/kernel-headers/usr && \
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make INSTALL_HDR_PATH=/tmp/kernel-headers/usr headers_install && \
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( cd /tmp/kernel-headers && tar cf /kernel-headers.tar usr ) && \
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( cd /tmp/kernel-modules && tar cf /kernel-modules.tar lib ) && \
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cp vmlinux arch/x86_64/boot/bzImage /
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RUN DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
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dir=/tmp/usr/src/linux-headers-$DVER && \
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mkdir -p $dir && \
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cp /linux/.config $dir && \
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cd /linux && \
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cp -a include "$dir" && \
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mkdir -p "$dir"/arch/x86 && cp -a arch/x86/include "$dir"/arch/x86/ && \
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( cd /tmp && tar cf /kernel-dev.tar usr/src )
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RUN printf "KERNEL_SOURCE=${KERNEL_SOURCE}\n" > /kernel-source-info
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