initial version
This commit is contained in:
Benjamin Böhmke
commit
45bcaa9172
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FROM alpine:3.10
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RUN apk update && \
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apk add automake build-base git autoconf confuse-dev linux-headers \
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findutils mtools e2fsprogs-extra alpine-sdk dosfstools && \
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rm -rf /var/cache/apk/*
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RUN git clone https://github.com/pengutronix/genimage.git /tmp/genimage && \
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cd /tmp/genimage && \
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./autogen.sh && \
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./configure CFLAGS='-g -O0' --prefix=/usr && \
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make install && \
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cd && \
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rm -rf /tmp/genimage
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ADD ./resources/genext2fs /genext2fs
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RUN cd /genext2fs && \
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abuild-keygen -a -i -q && \
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abuild -F -P /tmp/pkg && \
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apk add /tmp/pkg/x86_64/genext2fs-1*.apk && \
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rm -rf /tmp/pkg/
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ADD ./resources /resources
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WORKDIR /work
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@ -0,0 +1,283 @@
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#!/bin/bash
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set -e
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# User config
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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: ${ALPINE_BRANCH:="3.10"}
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: ${ALPINE_MIRROR:="http://dl-cdn.alpinelinux.org/alpine"}
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: ${TIME_ZONE:="Etc/UTC"}
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: ${HOST_NAME:="alpine"}
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: ${ROOT_PASSWORD:="alpine"}
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: ${IMG_NAME:="alpine-${ALPINE_BRANCH}-sdcard.img"}
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# static config
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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RES_PATH=/resources/
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BASE_PACKAGES="alpine-base tzdata parted ifupdown e2fsprogs-extra util-linux coreutils linux-rpi2"
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WORK_PATH="/work"
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OUTPUT_PATH="/output"
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ROOTFS_PATH="${WORK_PATH}/root_fs"
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BOOTFS_PATH="${WORK_PATH}/boot_fs"
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DATAFS_PATH="${WORK_PATH}/data_fs"
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IMAGE_PATH="${WORK_PATH}/img"
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# ensure work directory is clean
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rm -rf ${WORK_PATH}/*
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# functions
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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chroot_exec() {
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chroot "${ROOTFS_PATH}" "$@" 1>&2
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}
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make_image() {
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[ -d /tmp/genimage ] && rm -rf /tmp/genimage
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genimage --rootpath $1 \
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--tmppath /tmp/genimage \
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--inputpath ${IMAGE_PATH} \
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--outputpath ${IMAGE_PATH} \
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--config $2
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}
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# create root FS
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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echo ">> Prepare root FS"
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# update local repositories to destination ones to ensure the right packages where installed
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cat >/etc/apk/repositories <<EOF
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${ALPINE_MIRROR}/v${ALPINE_BRANCH}/main
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${ALPINE_MIRROR}/v${ALPINE_BRANCH}/community
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EOF
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# copy apk keys to new root (required for initial apk add run)
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mkdir -p ${ROOTFS_PATH}/etc/apk/keys/
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cp /usr/share/apk/keys/*.rsa.pub ${ROOTFS_PATH}/etc/apk/keys/
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# copy repositories to new root
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cp /etc/apk/repositories ${ROOTFS_PATH}/etc/apk/repositories
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# initial package installation
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apk --root ${ROOTFS_PATH} --update-cache --initdb --arch armhf add $BASE_PACKAGES
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# add google DNS to enable network access inside chroot
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echo "nameserver 8.8.8.8" > ${ROOTFS_PATH}/etc/resolv.conf
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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echo ">> Configure root FS"
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# set root password
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chroot_exec passwd << EOF
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${ROOT_PASSWORD}
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${ROOT_PASSWORD}
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EOF
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# Set time zone
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echo "${TIME_ZONE}" > ${ROOTFS_PATH}/etc/timezone
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chroot_exec ln -fs /usr/share/zoneinfo/${TIME_ZONE} /etc/localtime
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# Set host name
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chroot_exec rc-update add hostname default
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cat >${ROOTFS_PATH}/etc/hosts <<EOF
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127.0.0.1 localhost ${HOST_NAME}
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::1 localhost ${HOST_NAME}
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EOF
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cat >${ROOTFS_PATH}/etc/hostname <<EOF
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${HOST_NAME}
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EOF
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# enable local startup files (stored in /etc/local.d/)
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chroot_exec rc-update add local default
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cat >${ROOTFS_PATH}/etc/conf.d/local <<EOF
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rc_verbose=yes
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EOF
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# prepare network
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chroot_exec rc-update add networking default
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cat >${ROOTFS_PATH}/etc/network/interfaces <<EOF
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# interfaces(5) file used by ifup(8) and ifdown(8)
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# Include files from /etc/network/interfaces.d:
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source-directory /etc/network/interfaces.d
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auto lo
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iface lo inet loopback
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auto eth0
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iface eth0 inet dhcp
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EOF
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# networking should not wait for local -> local brings up the interface
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sed -i '/^\tneed/ s/$/ local/' ${ROOTFS_PATH}/etc/init.d/networking
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# bring up eth0 on startup
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cat >${ROOTFS_PATH}/etc/local.d/11-up_eth0.start <<EOF
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#!/bin/sh
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ifconfig eth0 up
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EOF
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chmod +x ${ROOTFS_PATH}/etc/local.d/11-up_eth0.start
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# make root file system writeable
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cat >${ROOTFS_PATH}/etc/local.d/10-remount_root.start <<EOF
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#!/bin/sh
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mount -o remount,rw /
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EOF
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chmod +x ${ROOTFS_PATH}/etc/local.d/10-remount_root.start
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# add script to resize data partition
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cp ${RES_PATH}/resizedata.sh ${ROOTFS_PATH}/etc/local.d/90-resizedata.start
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chmod +x ${ROOTFS_PATH}/etc/local.d/90-resizedata.start
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# mount data and boot partition (root is already mounted)
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cat >${ROOTFS_PATH}/etc/fstab <<EOF
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/dev/mmcblk0p1 /boot vfat defaults,ro 0 2
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/dev/mmcblk0p3 /data ext4 defaults 0 1
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EOF
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# custom
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chroot_exec apk add dropbear
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chroot_exec rc-update add dropbear
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rm -rf ${ROOTFS_PATH}/var/cache/apk/*
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# TODO /etc/motd
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# create boot FS
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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echo ">> Configure boot FS"
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# download base firmware
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mkdir -p ${BOOTFS_PATH}
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/bootcode.bin
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/fixup.dat
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/fixup_cd.dat
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/fixup_x.dat
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/start.elf
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/start_cd.elf
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wget -P ${BOOTFS_PATH} https://github.com/raspberrypi/firmware/raw/master/boot/start_x.elf
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# copy linux kernel and overlays
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cp ${ROOTFS_PATH}/usr/lib/linux-*-rpi2/*.dtb ${BOOTFS_PATH}/
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cp -r ${ROOTFS_PATH}/usr/lib/linux-*-rpi2/overlays ${BOOTFS_PATH}/
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cp ${ROOTFS_PATH}/boot/initramfs-rpi2 ${BOOTFS_PATH}/
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cp ${ROOTFS_PATH}/boot/vmlinuz-rpi2 ${BOOTFS_PATH}/
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# write boot config
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cat >${BOOTFS_PATH}/config.txt <<EOF
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disable_splash=1
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boot_delay=0
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gpu_mem=256
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gpu_mem_256=64
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hdmi_drive=1
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hdmi_group=2
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hdmi_mode=1
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hdmi_mode=87
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hdmi_cvt 800 480 60 6 0 0 0
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[pi2]
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kernel=vmlinuz-rpi2
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initramfs initramfs-rpi2
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[pi3]
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kernel=vmlinuz-rpi2
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initramfs initramfs-rpi2
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[all]
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include usercfg.txt
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EOF
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cat >${BOOTFS_PATH}/cmdline.txt <<EOF
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console=serial0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 fsck.repair=yes rw rootwait quiet
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EOF
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# create data FS
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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echo ">> Configure data FS"
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mkdir -p ${DATAFS_PATH}
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# create image
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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echo ">> Create SD card image"
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# boot partition
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cat >${WORK_PATH}/genimage_boot.cfg <<EOF
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image boot.vfat {
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name = "boot"
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vfat {
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}
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size = 32M
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}
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EOF
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make_image ${BOOTFS_PATH} ${WORK_PATH}/genimage_boot.cfg
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# root partition
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cat >${WORK_PATH}/genimage_root.cfg <<EOF
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image rootfs.ext4 {
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name = "root"
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ext4 {
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}
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size = 150MB
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}
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EOF
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make_image ${ROOTFS_PATH} ${WORK_PATH}/genimage_root.cfg
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# data partition
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cat >${WORK_PATH}/genimage_data.cfg <<EOF
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image datafs.ext4 {
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name = "data"
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ext4 {
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}
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size = 20MB
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}
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EOF
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make_image ${DATAFS_PATH} ${WORK_PATH}/genimage_data.cfg
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# sd card image
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cat >${WORK_PATH}/genimage_sdcard.cfg <<EOF
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image sdcard.img {
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hdimage {
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}
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partition boot {
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partition-type = 0xC
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bootable = "true"
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image = "boot.vfat"
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}
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partition rootfs {
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partition-type = 0x83
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image = "rootfs.ext4"
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}
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partition datafs {
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partition-type = 0x83
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image = "datafs.ext4"
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}
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}
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EOF
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make_image ${IMAGE_PATH} ${WORK_PATH}/genimage_sdcard.cfg
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# copy final image
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cp ${IMAGE_PATH}/sdcard.img ${OUTPUT_PATH}/${IMG_NAME}
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@ -0,0 +1,44 @@
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# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
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pkgname=genext2fs
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pkgver=1.4.1
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pkgrel=0
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pkgdesc="Tool for generating an ext2 filesystem as non-root"
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url="http://genext2fs.sourceforge.net/"
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arch="all"
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license="GPLv2"
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depends=""
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depends_dev=""
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makedepends="$depends_dev"
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install=""
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subpackages="$pkgname-doc"
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source="http://downloads.sourceforge.net/project/genext2fs/genext2fs/$pkgver/genext2fs-$pkgver.tar.gz"
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_builddir="$srcdir"/genext2fs-$pkgver
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prepare() {
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local i
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cd "$_builddir"
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for i in $source; do
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case $i in
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*.patch) msg $i; patch -p1 -i "$srcdir"/$i || return 1;;
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esac
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done
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}
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build() {
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cd "$_builddir"
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./configure \
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--build=$CBUILD \
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--host=$CHOST \
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--prefix=/usr \
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--sysconfdir=/etc \
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--mandir=/usr/share/man \
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--infodir=/usr/share/info \
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--localstatedir=/var \
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|| return 1
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make || return 1
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}
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package() {
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cd "$_builddir"
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make DESTDIR="$pkgdir" install || return 1
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}
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md5sums="b7b6361bcce2cedff1ae437fadafe53b genext2fs-1.4.1.tar.gz"
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sha256sums="404dbbfa7a86a6c3de8225c8da254d026b17fd288e05cec4df2cc7e1f4feecfc genext2fs-1.4.1.tar.gz"
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sha512sums="1b9ec7044014423345ae6b09862ba6903f5b3e0f68fb8bbcf97daf2705471cc1633a9fdbc5e00afe1b191e1af7bed87bde2e538bc7365469218f2a00b062845c genext2fs-1.4.1.tar.gz"
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@ -0,0 +1,63 @@
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#!/bin/sh -e
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logger -t "rc.resizedata" "Expanding root partition"
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# Detect root partition device
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ROOT_PART=$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p')
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if [ -z "$ROOT_PART" ] ; then
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log_warning_msg "unable to detect root partition device"
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return 1
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fi
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# Extract root device name
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case "${ROOT_PART}" in
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mmcblk0*) ROOT_DEV=mmcblk0 ;;
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sda*) ROOT_DEV=sda ;;
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esac
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# get last partition
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LAST_PART_NUM=$(parted /dev/${ROOT_DEV} -ms unit s p | tail -n 1 | cut -f 1 -d:)
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LAST_PART="${ROOT_DEV}p${LAST_PART_NUM}"
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# unmount if mounted
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if grep -qs "/dev/${LAST_PART}" /proc/mounts; then
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umount /dev/${LAST_PART}
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fi
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# Get the starting offset of last partition
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PART_START=$(parted /dev/${ROOT_DEV} -ms unit s p | grep "^${LAST_PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g')
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if [ -z "$PART_START" ] ; then
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logger -t "rc.resizedata" "${ROOT_DEV} unable to get starting sector of the partition"
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return 1
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fi
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# Get the possible last sector for the root partition
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PART_LAST=$(fdisk -l /dev/${ROOT_DEV} | grep '^Disk.*sectors' | awk '{ print $7 - 1 }')
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if [ -z "$PART_LAST" ] ; then
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logger -t "rc.resizedata" "${ROOT_DEV} unable to get last sector of the partition"
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return 1
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fi
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### Since rc.local is run with "sh -e", let's add "|| true" to prevent premature exit
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echo "resize partition"
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fdisk /dev/${ROOT_DEV} > /dev/null <<EOF2 || true
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p
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d
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$LAST_PART_NUM
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n
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p
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$LAST_PART_NUM
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$PART_START
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$PART_LAST
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p
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w
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EOF2
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# Reload the partition table, resize root filesystem then remove resizing code from this file
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partprobe /dev/${ROOT_DEV} &&
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resize2fs -p /dev/${LAST_PART} &&
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logger -t "rc.resizedata" "Root partition successfully resized."
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mount -a
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rm -f /etc/local.d/90-resizedata.start
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||||
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