projects: add kernel-config project

This is just a direct import of the current kernel/ directory, with a
slight splitting up of the dockerfiles to build a kernel-source and kernel
image.

Signed-off-by: Tycho Andersen <tycho@docker.com>

projects/kernel-config/Dockerfile.build

@@ -0,0 +1,59 @@
+ARG source=nosuchimage
+FROM ${source}
+
+ARG KERNEL_VERSION
+ARG KERNEL_SERIES
+ARG DEBUG
+
+COPY kernel_config-${KERNEL_SERIES} /linux/arch/x86/configs/x86_64_defconfig
+COPY kernel_config.debug /linux/debug_config
+
+RUN if [ -n "${DEBUG}" ]; then \
+    sed -i 's/CONFIG_PANIC_ON_OOPS=y/# CONFIG_PANIC_ON_OOPS is not set/' /linux/arch/x86/configs/x86_64_defconfig; \
+    cat /linux/debug_config >> /linux/arch/x86/configs/x86_64_defconfig; \
+    fi
+
+RUN mkdir /out
+
+# Kernel
+RUN make defconfig && \
+    make oldconfig && \
+    make -j "$(getconf _NPROCESSORS_ONLN)" KCFLAGS="-fno-pie" && \
+    cp arch/x86_64/boot/bzImage /out/kernel && \
+    cp System.map /out
+
+# Modules
+RUN make INSTALL_MOD_PATH=/tmp/kernel-modules modules_install && \
+    ( DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
+      cd /tmp/kernel-modules/lib/modules/$DVER && \
+      rm build source && \
+      ln -s /usr/src/linux-headers-$DVER build ) && \
+    ( cd /tmp/kernel-modules && tar cf /out/kernel.tar lib )
+
+# Headers (userspace API)
+RUN mkdir -p /tmp/kernel-headers/usr && \
+    make INSTALL_HDR_PATH=/tmp/kernel-headers/usr headers_install && \
+    ( cd /tmp/kernel-headers && tar cf /out/kernel-headers.tar usr )
+
+# Headers (kernel development)
+RUN DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
+    dir=/tmp/usr/src/linux-headers-$DVER && \
+    mkdir -p $dir && \
+    cp /linux/.config $dir && \
+    cp /linux/Module.symvers $dir && \
+    find . -path './include/*' -prune -o \
+           -path './arch/*/include' -prune -o \
+           -path './scripts/*' -prune -o \
+           -type f \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
+                      -name '*.lds' -o -name '*.pl' -o -name '*.sh' \) | \
+         tar cf - -T - | (cd $dir; tar xf -) && \
+    ( cd /tmp && tar cf /out/kernel-dev.tar usr/src )
+
+RUN printf "KERNEL_SOURCE=${KERNEL_SOURCE}\n" > /out/kernel-source-info
+
+
+FROM linuxkit/toybox-media:eee3dd4d72cd784801e95b1781e6c4f9d8a5e5eb@sha256:7f940e687164ee2676e11c61705c79f7dd2d144ee87ad17a494848a7045f5f53
+ENTRYPOINT []
+CMD []
+WORKDIR /
+COPY --from=kernel-build /out/* /