314 lines
10 KiB
Bash
Executable file
314 lines
10 KiB
Bash
Executable file
#!/bin/bash
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set -e
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# Install dependencies in host system
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apt-get update
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apt-get install -y --no-install-recommends \
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ubuntu-keyring ca-certificates debootstrap git \
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qemu-user-static qemu-utils qemu-system-arm binfmt-support \
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parted kpartx rsync dosfstools xz-utils
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# Make sure cross-running ARM ELF executables is enabled
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update-binfmts --enable
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rootdir=$(pwd)
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basedir=$(pwd)/artifacts/ubuntusway-rpi
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export packages="ubuntusway-minimal ubuntusway-desktop ubuntusway-standard"
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export architecture="arm64"
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export codename="lunar"
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export channel="dev"
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version=23.04
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YYYYMMDD="$(date +%Y%m%d)"
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imagename=ubuntusway-$version-$channel-rpi-$YYYYMMDD
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mkdir -p "${basedir}"
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cd "${basedir}"
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# Bootstrap an ubuntu minimal system
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debootstrap \
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--arch $architecture \
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--components=main,restricted,universe,multiverse \
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--foreign \
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--include=cloud-guest-utils \
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$codename ubuntusway-$architecture http://ports.ubuntu.com/ubuntu-ports
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# Add the QEMU emulator for running ARM executables
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cp /usr/bin/qemu-arm-static ubuntusway-$architecture/usr/bin/
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# Run the second stage of the bootstrap in QEMU
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LANG=C.UTF-8 chroot ubuntusway-$architecture /debootstrap/debootstrap --second-stage
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# Copy Raspberry Pi specific files
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cp -r "${rootdir}"/rpi/rootfs/writable/* ubuntusway-${architecture}/
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# Add the rest of the ubuntu repos
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cat << EOF > ubuntusway-$architecture/etc/apt/sources.list
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deb http://ports.ubuntu.com/ubuntu-ports $codename main restricted universe multiverse
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deb http://ports.ubuntu.com/ubuntu-ports $codename-updates main restricted universe multiverse
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deb http://ports.ubuntu.com/ubuntu-ports $codename-security main restricted universe multiverse
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deb http://ports.ubuntu.com/ubuntu-ports $codename-backports main restricted universe multiverse
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EOF
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# Copy in the ubuntusway PPAs/keys/apt config
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for f in "${rootdir}"/etc/config/archives/*.list; do cp -- "$f" "ubuntusway-$architecture/etc/apt/sources.list.d/$(basename -- "$f")"; done
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for f in "${rootdir}"/etc/config/archives/*.key; do cp -- "$f" "ubuntusway-$architecture/etc/apt/trusted.gpg.d/$(basename -- "$f").asc"; done
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for f in "${rootdir}"/etc/config/archives/*.pref; do cp -- "$f" "ubuntusway-$architecture/etc/apt/preferences.d/$(basename -- "$f")"; done
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# Set codename/channel in added repos
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sed -i "s/@CHANNEL/$channel/" ubuntusway-$architecture/etc/apt/sources.list.d/*.list*
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sed -i "s/@BASECODENAME/$codename/" ubuntusway-$architecture/etc/apt/sources.list.d/*.list*
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# Set codename in added preferences
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sed -i "s/@BASECODENAME/$codename/" ubuntusway-$architecture/etc/apt/preferences.d/*.pref*
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echo "ubuntusway" > ubuntusway-$architecture/etc/hostname
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cat << EOF > ubuntusway-${architecture}/etc/hosts
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127.0.0.1 ubuntusway localhost
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::1 localhost ip6-localhost ip6-loopback
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fe00::0 ip6-localnet
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ff00::0 ip6-mcastprefix
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ff02::1 ip6-allnodes
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ff02::2 ip6-allrouters
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EOF
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# Configure mount points
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cat << EOF > ubuntusway-${architecture}/etc/fstab
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# <file system> <mount point> <type> <options> <dump> <pass>
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LABEL=writable / ext4 discard,noatime,x-systemd.growfs 0 1
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LABEL=system-boot /boot/firmware vfat defaults 0 1
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EOF
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export LC_ALL=C.UTF-8
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export DEBIAN_FRONTEND=noninteractive
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# Config to stop flash-kernel trying to detect the hardware in chroot
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export FK_MACHINE=none
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mount -t proc proc ubuntusway-$architecture/proc
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mount -o bind /dev/ ubuntusway-$architecture/dev/
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mount -o bind /dev/pts ubuntusway-$architecture/dev/pts
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# Make a desktop stage that installs all of the metapackages
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cat << EOF > ubuntusway-$architecture/desktop
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#!/bin/bash
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apt-get update
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apt-get -y upgrade
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apt-get -y install $packages
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rm -f /desktop
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EOF
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chmod +x ubuntusway-$architecture/desktop
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LANG=C.UTF-8 chroot ubuntusway-$architecture /desktop
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# Install Raspberry Pi specific packages
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cat << EOF > ubuntusway-$architecture/hardware
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#!/bin/bash
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apt-get -y install linux-image-raspi linux-firmware-raspi linux-modules-extra-raspi \
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pi-bluetooth rpi-eeprom libraspberrypi0 libraspberrypi-bin ubuntu-raspi-settings upower
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apt-get -y install --no-install-recommends raspi-config
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systemctl disable raspi-config
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# Install first boot filesystem expansion
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apt-get -y install --no-install-recommends cloud-guest-utils \
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cloud-initramfs-growroot
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rm -f hardware
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EOF
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chmod +x ubuntusway-$architecture/hardware
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LANG=C.UTF-8 chroot ubuntusway-$architecture /hardware
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# Copy in any file overrides
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cp -rv "${rootdir}"/etc/config/includes.chroot/etc/apt/ ubuntusway-$architecture/etc/
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cp -rv "${rootdir}"/etc/config/includes.chroot/etc/netplan/ ubuntusway-$architecture/etc/
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cp -rv "${rootdir}"/etc/config/includes.chroot/usr ubuntusway-$architecture/
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cp -rv "${rootdir}"/rpi/greetd/* ubuntusway-${architecture}/etc/greetd/
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mkdir ubuntusway-$architecture/hooks
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cp -v "${rootdir}"/etc/config/hooks/live/*.chroot ubuntusway-$architecture/hooks
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hook_files="ubuntusway-$architecture/hooks/*"
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for f in $hook_files
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do
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base=$(basename "${f}")
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LANG=C.UTF-8 chroot ubuntusway-$architecture "/hooks/${base}"
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done
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rm -r "ubuntusway-$architecture/hooks"
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# Create OEM user
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cat <<EOF >> ubuntusway-$architecture/user
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#!/bin/bash
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apt-get update
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apt-get -y install calamares-arm-oem
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DATE=$(date +%m%H%M%S)
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PASSWD=$(mkpasswd -m sha-512 oem "${DATE}")
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addgroup --gid 29999 oem
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adduser --gecos "OEM Configuration (temporary user)" --add_extra_groups --disabled-password --gid 29999 --uid 29999 oem
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usermod -a -G adm,sudo -p "${PASSWD}" oem
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rm -f user
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EOF
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chmod +x ubuntusway-$architecture/user
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LANG=C.UTF-8 chroot ubuntusway-$architecture /user
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# Creating swapfile service
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# Adds lz4 and z3fold modules to initramfs.
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# - https://ubuntu.com/blog/how-low-can-you-go-running-ubuntu-desktop-on-a-2gb-raspberry-pi-4
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echo lz4 >> ubuntusway-$architecture/etc/initramfs-tools/modules
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echo z3fold >> ubuntusway-$architecture/etc/initramfs-tools/modules
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mkdir -p ubuntusway-$architecture/usr/lib/systemd/system/swap.target.wants
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cat <<EOF >> ubuntusway-$architecture/usr/lib/systemd/system/mkswap.service
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[Unit]
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Description=Create the default swapfile
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DefaultDependencies=no
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Requires=local-fs.target
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After=local-fs.target
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Before=swapfile.swap
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ConditionPathExists=!/swapfile
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[Service]
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Type=oneshot
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ExecStartPre=fallocate -l 1GiB /swapfile
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ExecStartPre=chmod 600 /swapfile
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ExecStart=mkswap /swapfile
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[Install]
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WantedBy=swap.target
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EOF
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cat <<EOF >> ubuntusway-$architecture/usr/lib/systemd/system/swapfile.swap
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[Unit]
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Description=The default swapfile
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[Swap]
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What=/swapfile
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EOF
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cat <<EOF >> ubuntusway-$architecture/enable_zswap
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#!/bin/bash
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ln -s /usr/lib/systemd/system/mkswap.service /usr/lib/systemd/system/swap.target.wants/mkswap.service
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ln -s /usr/lib/systemd/system/swapfile.swap /usr/lib/systemd/system/swap.target.wants/swapfile.swap
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update-initramfs -u
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rm -f enable_zswap
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EOF
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chmod +x ubuntusway-$architecture/enable_zswap
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LANG=C.UTF-8 chroot ubuntusway-$architecture /enable_zswap
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# Cleanup chroot before creating .img
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cat <<EOF >> ubuntusway-$architecture/cleanup
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#!/bin/bash
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apt-get -y autoremove
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apt-get -y autoclean
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apt-get -y clean
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rm -rf {*.bak,*.old}
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rm -rf wget-log
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rm -rf /boot/{*.bak,*.old}
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rm -rf /etc/ssh/ssh_host_*_key*
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rm -rf /etc/apt/*.save
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rm -rf /etc/apt/apt.conf.d/90cache
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rm -rf /etc/apt/sources.list.d/*.save
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rm -rf /root/.wget-hsts
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rm -rf /tmp/*
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rm -rf /var/log/apt/*
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rm -rf /var/log/alternatives.log
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rm -rf /var/log/bootstrap.log
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rm -rf /var/log/dpkg.log
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rm -rf /var/log/fontconfig.log
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rm -rf /var/cache/fontconfig/CACHEDIR.TAG
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rm -rf /var/crash/*
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rm -rf /var/lib/apt/lists/*
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rm -rf /var/lib/dpkg/*-old
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[ -L /var/lib/dbus/machine-id ] || rm -f /var/lib/dbus/machine-id
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echo '' > /etc/machine-id
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EOF
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chmod +x ubuntusway-$architecture/cleanup
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LANG=C.UTF-8 chroot ubuntusway-$architecture /cleanup
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# Calculate image size accounting for boot parition + 5%
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boot_size="256"
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root_size="$(du -cs --block-size=MB ubuntusway-$architecture | tail -n1 | cut -d'M' -f1)"
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pad_size="$(( (root_size / 10) / 2 ))"
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raw_size="$((boot_size + root_size + pad_size))"
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# Create the disk and partition it
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echo "Creating image file"
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fallocate -l "${raw_size}"M "${basedir}/${imagename}.img"
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parted "${imagename}.img" -s -- mklabel msdos
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parted "${imagename}.img" -s -a optimal -- mkpart primary fat32 1 "${boot_size}MB"
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parted "${imagename}.img" -s -a optimal -- mkpart primary ext4 "${boot_size}MB" 100%
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parted "${imagename}.img" -s set 1 boot on
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# Set the partition variables
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loopdevice=$(losetup -f --show "${basedir}/${imagename}.img")
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device=$(kpartx -va "$loopdevice" | sed -E 's/.*(loop[0-9])p.*/\1/g' | head -1)
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device="/dev/mapper/${device}"
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bootp=${device}p1
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rootp=${device}p2
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# Create file systems
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mkfs.vfat -n system-boot -S 512 -s 16 -v "$bootp"
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mkfs.ext4 -L writable -m 0 "$rootp"
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# Create the dirs for the partitions and mount them
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mkdir -p "${basedir}/bootp" "${basedir}/root"
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mount -t vfat "$bootp" "${basedir}/bootp"
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mount "$rootp" "${basedir}/root"
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mkdir -p ubuntusway-$architecture/boot/firmware
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mount -o bind "${basedir}/bootp/" ubuntusway-$architecture/boot/firmware
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# Copy Raspberry Pi specific files
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cp -rv "${rootdir}"/rpi/rootfs/system-boot/* ubuntusway-${architecture}/boot/firmware/
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NEW_KERNEL=$(ls -1 ubuntusway-$architecture/boot/vmlinuz-* | tail -n1 | awk -F/ '{print $NF}' | cut -d'-' -f2-4)
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if [ -z "${NEW_KERNEL}" ]; then
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echo "ERROR! Could not detect the new kernel version"
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exit 1
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fi
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echo "Kernel: ${NEW_KERNEL}"
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# Copy kernels and firmware to boot partition
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cat << EOF > ubuntusway-$architecture/hardware
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#!/bin/bash
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cp -av /boot/vmlinuz-${NEW_KERNEL} /boot/firmware/vmlinuz
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cp -av /boot/initrd.img-${NEW_KERNEL} /boot/firmware/initrd.img
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# Copy device-tree blobs to fat32 partition
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cp -v /lib/firmware/${NEW_KERNEL}/device-tree/broadcom/* /boot/firmware/
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cp -rv /lib/firmware/${NEW_KERNEL}/device-tree/overlays /boot/firmware/
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cp -v /lib/linux-firmware-raspi/* /boot/firmware/
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rm -f hardware
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EOF
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chmod +x ubuntusway-$architecture/hardware
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LANG=C.UTF-8 chroot ubuntusway-$architecture /hardware
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umount ubuntusway-$architecture/dev/pts
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umount ubuntusway-$architecture/dev/
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umount ubuntusway-$architecture/proc
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umount ubuntusway-$architecture/boot/firmware
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echo "Rsyncing rootfs into image file"
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rsync -HPavz -q "${basedir}/ubuntusway-$architecture/" "${basedir}/root/"
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# Unmount partitions
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umount "$bootp"
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umount "$rootp"
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kpartx -dv "$loopdevice"
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losetup -d "$loopdevice"
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echo "Compressing ${imagename}.img"
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xz -T0 -z "${basedir}/${imagename}.img"
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cd "${basedir}"
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md5sum "${imagename}.img.xz" | tee "${imagename}.md5.txt"
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sha256sum "${imagename}.img.xz" | tee "${imagename}.sha256.txt"
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