282 lines
No EOL
9.9 KiB
Bash
Executable file
282 lines
No EOL
9.9 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 ubuntu-keyring ca-certificates debootstrap git qemu-user-static qemu-utils qemu-system-arm binfmt-support 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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# Free space on rootfs in MiB
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free_space="500"
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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="jammy"
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export channel="dev"
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version=22.04
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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 --foreign --arch $architecture $codename ubuntusway-$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-$architecture/usr/bin/
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# Run the second stage of the bootstrap in QEMU
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LANG=C chroot ubuntusway-$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-${architecture}/etc/fstab
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# <file system> <mount point> <type> <options> <dump> <pass>
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proc /proc proc nodev,noexec,nosuid 0 0
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LABEL=writable / ext4 discard,noatime 0 1
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LABEL=system-boot /boot/firmware vfat defaults 0 1
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EOF
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export LC_ALL=C
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export DEBIAN_FRONTEND=noninteractive
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# Config to stop flash-kernel trying to detect the hardware in chroot
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export FK_MACHINE=none
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mount -t proc proc ubuntusway-$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 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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# Make a dummy folder for the boot partition so packages install properly,
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# we'll recreate it on the actual partition later
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mkdir -p /boot/firmware
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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
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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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# Symlink to workaround bug with Bluetooth driver looking in the wrong place for firmware
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ln -s /lib/firmware /etc/firmware
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rm -rf /boot/firmware
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rm -f hardware
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EOF
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chmod +x ubuntusway-$architecture/hardware
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LANG=C chroot ubuntusway-$architecture /hardware
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# Copy in any file overrides
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cp -r "${rootdir}"/etc/config/includes.chroot/* ubuntusway-$architecture/
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mkdir ubuntusway-$architecture/hooks
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cp "${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 "${f}")
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LANG=C chroot ubuntusway-$architecture "/hooks/${base}"
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done
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rm -r "ubuntusway-$architecture/hooks"
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# Add a oneshot service to grow the rootfs on first boot
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install -m 755 -o root -g root "${rootdir}/rpi/files/resizerootfs" "ubuntusway-$architecture/usr/sbin/resizerootfs"
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install -m 644 -o root -g root "${rootdir}/rpi/files/resizerootfs.service" "ubuntusway-$architecture/etc/systemd/system"
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mkdir -p "ubuntusway-$architecture/etc/systemd/system/systemd-remount-fs.service.requires/"
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ln -s /etc/systemd/system/resizerootfs.service "ubuntusway-$architecture/etc/systemd/system/systemd-remount-fs.service.requires/resizerootfs.service"
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# Create default user (WARNING! This is a temporary solution, until postinstall user setup is created)
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cat <<EOF >> ubuntusway-$architecture/user
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#!/bin/bash
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adduser --disabled-password --gecos "" ubuntu
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echo "ubuntu:ubuntusway" | chpasswd
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usermod -a -G adm,dialout,cdrom,sudo,audio,video,plugdev,games,users,input,netdev ubuntu
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rm -f user
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EOF
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chmod +x ubuntusway-$architecture/user
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LANG=C 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-$architecture/enable_zswap
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#!/bin/bash
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ln -s /usr/lib/systemd/system/mkswap.service /usr/lib/systemd/system/swap.target.wants/mkswap.service
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ln -s /usr/lib/systemd/system/swapfile.swap /usr/lib/systemd/system/swap.target.wants/swapfile.swap
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update-initrafms -u
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rm -f enable_zswap
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EOF
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chmod +x ubuntusway-$architecture/enable_zswap
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LANG=C chroot ubuntusway-$architecture /enable_zswap
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# Calculate the space to create the image.
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root_size="$(du -s -B1K ubuntusway-$architecture | cut -f1)"
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raw_size="$(($((free_space*1024))+root_size))"
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# Create the disk and partition it
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echo "Creating image file"
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# Sometimes fallocate fails if the filesystem or location doesn't support it, fallback to slower dd in this case
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if ! fallocate -l "$(echo ${raw_size}Ki | numfmt --from=iec-i --to=si --format=%.1f)" "${basedir}/${imagename}.img"
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then
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dd if=/dev/zero of="${basedir}/${imagename}.img" bs=1024 count=${raw_size}
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fi
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parted "${imagename}.img" --script -- mklabel msdos
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parted "${imagename}.img" --script -- mkpart primary fat32 0 256
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parted "${imagename}.img" --script -- mkpart primary ext4 256 -1
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# Set the partition variables
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loopdevice=$(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=${device}p2
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# Create file systems
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mkfs.vfat -n system-boot "$bootp"
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mkfs.ext4 -L writable "$rootp"
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# Create the dirs for the partitions and mount them
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mkdir -p "${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 -r "${rootdir}"/rpi/rootfs/system-boot/* ubuntusway-${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 /boot/vmlinuz-${NEW_KERNEL} /boot/firmware/vmlinuz
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cp /boot/initrd.img-${NEW_KERNEL} /boot/firmware/initrd.img
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# Copy device-tree blobs to fat32 partition
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cp -r /lib/firmware/${NEW_KERNEL}/device-tree/broadcom/* /boot/firmware/
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cp -r /lib/firmware/${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-$architecture/hardware
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LANG=C chroot ubuntusway-$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" |