root.sh 8.08 KB
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#!/bin/bash
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#
# Copyright (C) 2017 Purism SPC
#
# SPDX-License-Identifier: GPL-3.0+
#
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# distro and basedir set by calling script 
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basedir="$1"
image_name="$2"
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target_qemu="${basedir}/${qemu}"
stamp="${basedir}/var/log/gitrev.log"
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for env_var in distro pureos_board packages; do
    if [ -z "${!env_var}" ]; then
	echo "Must pass in \$${env_var} via the environment" 1>&2
	exit 1
    fi
done
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set -e
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set -u
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set -x
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echo "Configuring ${distro} in ${basedir} for board ${pureos_board}"

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# bindmount qemu into the rootfs so we can chroot into it if needed
function setup_qemu()
{
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    [ -f "${target_qemu}" ] || cp "${qemu}" "${target_qemu}"
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}


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function setup_kernel()
{
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    local link

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    mkdir -p tmp/
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    mkdir -p "${basedir}/boot/dtbs"
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    case "${pureos_board}" in
        imx6)
            fdt_source="${basedir}"/usr/lib/linux-image-*/"${fdt_file}"
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            link=$(basename "${basedir}"/boot/vmlinuz-*)
            rm -f "${basedir}/boot/zImage"
            ln -s "${link}" "${basedir}/boot/zImage"
            cp data/update-zImage-link "${basedir}/etc/kernel/postinst.d/"
            cp "${basedir}/boot/zImage" "tmp/"
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            ;;
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        ec-som|imx8)
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            fdt_source="${basedir}"/usr/lib/linux-image-*/freescale/"${fdt_file}"
            cp "${basedir}/boot/${link}" "${basedir}/boot/Image.gz"
            gunzip "${basedir}/boot/Image.gz"
            ;;
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        devkit*)
            fdt_source="${basedir}"/usr/lib/linux-image-*/freescale/"${fdt_file}"
            # Reconfigure kernel package to trigger kernel hooks
	    chroot "${basedir}" dpkg-reconfigure $(basename ${kernel_deb%%_*})
            ;;
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    esac
    cp ${fdt_source} "${basedir}/boot/dtbs/"
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    # Make sure we have the kernel available for tests
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}


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function setup_uboot()
{
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    sed -e "s/##DTBNAME##/${fdt_file}/" "data/boot-${pureos_board}.txt.in" > "${basedir}/boot/boot_emmc.txt"
    sed -e "s/##RFSPART##/0/" -i "${basedir}/boot/boot_emmc.txt"
    mkimage -A arm -T script -O linux -d "${basedir}/boot/boot_emmc.txt" "${basedir}/boot/boot_emmc.scr"
    sed -e "s/##DTBNAME##/${fdt_file}/" "data/boot-${pureos_board}.txt.in" > "${basedir}/boot/boot_sd.txt"
    sed -e "s/##RFSPART##/1/" -i "${basedir}/boot/boot_sd.txt"
    mkimage -A arm -T script -O linux -d "${basedir}/boot/boot_sd.txt" "${basedir}/boot/boot_sd.scr"
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    if [ "${pureos_board}" == "imx6" ]; then
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        ln -fs boot_sd.scr "${basedir}/boot/6x_bootscript"
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    elif [ "${pureos_board}" == "devkit" ]; then
        ln -fs boot_emmc.scr "${basedir}/boot/boot.scr"
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    else
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        ln -fs boot_sd.scr "${basedir}/boot/boot.scr"
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    fi
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    [ ! -d "files/uboot-${pureos_board}" ] || cp -a "files/uboot-${pureos_board}/"* "${basedir}/boot/"
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}


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function build_tarball()
{
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   tarball=$(basename "${image_name}" .img).tar.xz
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   echo -n "Taring up rootfs to $PWD/${tarball}..."
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   tar --acl \
       --exclude='./run/*' \
       --exclude='./dev/*' \
       --exclude='./sys/*' \
       --exclude='./proc/*' \
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       -acf "${PWD}/${tarball}" -C "${basedir}" .
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   echo "Done."
}


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function check_patched()
{
    if [ -z "${patched}" ]; then
        return
    fi

    for pkg in ${patched}; do
        if ! chroot "${basedir}" dpkg -s ${pkg} | grep "^Version: .*pureos"; then
            echo "${pkg} is not a patched version."
            exit 1
        fi
    done
}


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function cleanup_chroot()
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{
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    chroot "${basedir}" apt-get clean
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    rm "${basedir}/etc/resolv.conf"
    mv "${basedir}/etc/resolv.conf.bak" "${basedir}/etc/resolv.conf"
    rm "${basedir}/usr/sbin/policy-rc.d"
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    umount "${basedir}/dev/pts"
    umount "${basedir}/dev"
    umount "${basedir}/sys"
    umount "${basedir}/proc"
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    # existence of stamp indicates success
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    if [ -f "${stamp}" ]; then
      [ -z "${build_tarball}" ] || build_tarball
    else
      exit 1
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    fi
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}


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function prepare_chroot()
{
    trap cleanup_chroot EXIT

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    mount -t proc chproc "${basedir}/proc"
    mount -t sysfs chsys "${basedir}/sys"
    mount -t devtmpfs chdev "${basedir}/dev" || mount --bind /dev "${basedir}/dev"
    mount -t devpts chpts "${basedir}/dev/pts"
    echo -e '#!/bin/sh\nexit 101' > "${basedir}/usr/sbin/policy-rc.d"
    chmod 755 "${basedir}/usr/sbin/policy-rc.d"
    mv "${basedir}/etc/resolv.conf" "${basedir}/etc/resolv.conf.bak"
    cp /etc/resolv.conf "${basedir}/etc"
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}


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function create_stamp()
{
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    git log --format=format:%H -1 > "${stamp}"
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}


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function setup_gui()
{
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    chroot "${basedir}" systemctl enable phosh.service
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}

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function setup_journal()
{
    # Enable systemd journal
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    chroot "${basedir}" mkdir -p /var/log/journal
    chroot "${basedir}" systemd-tmpfiles --create --prefix /var/log/journal
    chroot "${basedir}" apt-get -y remove rsyslog
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    for l in daemon messages syslog kern mail user; do
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        chroot "${basedir}" rm -f /var/log/${l}.*
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    done
}


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function setup_sshd()
{
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    [ -x "${basedir}/usr/sbin/sshd" ] || return
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    # Make sure unique host keys are generated on first boot
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    chroot "${basedir}" rm -f /etc/ssh/ssh_host_*
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}


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function setup_locale()
{
    echo "en_US.UTF-8 UTF-8" > "${basedir}/etc/locale.gen"
    chroot "${basedir}" dpkg-reconfigure locales
}


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# We have to do this because task packages don't work with debootstrap
# (and won't).  See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841649
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# other packages are better installed late to not confuse deboostrap about
# systemd and systemd-shim (e.g. libpam-systemd)
function install_pkgs()
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{
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    chroot "${basedir}" apt-get -y update
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    if ! chroot "${basedir}" apt -y install ${packages}; then
	echo "Package installation failed, this might help to diagnose the problem:"
	chroot "${basedir}" apt -y -o Debug::pkgProblemResolver=yes install -y --simulate ${packages}
    fi
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}

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function setup_apt()
{
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    echo "${apt_sources}" | sed 's/|/\n/g' > "${basedir}/etc/apt/sources.list"
    echo "Set sources list to:"
    cat "${basedir}/etc/apt/sources.list"
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    cat << EOF > "${basedir}/etc/apt/apt.conf.d/71-no-recommends"
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	APT::Install-Recommends "0";
	APT::Install-Suggests "0";
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EOF
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    chroot "${basedir}" apt-get install -y gnupg
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    if [ "${ci_pkgs}" -gt 0 ]; then
      cat << EOF > "${basedir}/etc/apt/sources.list.d/ci.list"
deb http://ci.puri.sm/ scratch librem5
EOF
      cat data/ci-repo.key | chroot ${basedir} apt-key add -
    fi
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}


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function setup_network()
{
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    cat << EOF > "${basedir}/etc/hosts"
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127.0.0.1       pureos   localhost
::1             localhost ip6-localhost ip6-loopback
fe00::0         ip6-localnet
ff00::0         ip6-mcastprefix
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters
EOF

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    cat << EOF > "${basedir}/etc/network/interfaces"
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auto lo
iface lo inet loopback
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source-directory interfaces.d
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EOF

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# Don't setup resolv.conf if it's a symlink
# DHCP will later handle this just fine
    if [ -f "${basedir}/etc/resolv.conf" ]; then
        cat <<EOF > "${basedir}/etc/resolv.conf"
    nameserver 208.67.220.220
    nameserver 208.67.222.222
EOF
    fi
}


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function create_report()
{
	echo "Installed packages:"
	chroot "${basedir}" dpkg -l
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	echo -e "\\nInstalled apt keys:"
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	chroot "${basedir}" apt-key list
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	echo -e "\\nKernels:"
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	ls -l "${basedir}/boot"
}

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# create the directories so that this script can be tested without the generated filesystem
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mkdir -p "${basedir}/etc/apt/apt.conf.d/"
mkdir -p "${basedir}/etc/network"
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export MALLOC_CHECK_=0 # workaround for LP: #520465
export LC_ALL=C
export DEBIAN_FRONTEND=noninteractive
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export DEBCONF_NONINTERACTIVE_SEEN=true
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cat << EOF > "${basedir}/debconf.set"
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console-common console-data/keymap/policy select Select keymap from full list
console-common console-data/keymap/full select en-latin1-nodeadkeys
EOF
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setup_network
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prepare_chroot
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setup_qemu
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setup_apt
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install_pkgs
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setup_locale
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setup_gui
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setup_journal
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setup_sshd
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# Skip setup until we have hardware,  not needed for qemu
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case "${pureos_board}" in
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    imx6|imx8|ec-som|devkit)
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        setup_kernel
        setup_uboot
        ;;
    ?)
        echo "No kernel or u-boot setup for ${pureos_board}"
        ;;
esac

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check_patched
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create_report > "./tmp/${pureos_board}-report.log"
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create_stamp
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if [ -x files/local.sh ]; then
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    echo "Warning: local.sh found, image is tainted"
    echo "tainted: true" >> files/meta.yml
    ./files/local.sh "$@"
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fi