PrawnOS-nonfree/scripts/BuildScripts/FilesystemScripts/buildFilesystem.sh

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#!/bin/bash
set -x
set -e
# Build fs, image
# This file is part of PrawnOS (https://www.prawnos.com)
# Copyright (c) 2018 Hal Emmerich <hal@halemmerich.com>
# PrawnOS is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation.
# PrawnOS is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with PrawnOS. If not, see <https://www.gnu.org/licenses/>.
#Ensure Sudo
if [ ! $UID = "0" ]
then
echo "Please run this script with sudo, or as root:"
echo "sudo $0 $*"
exit 1
fi
if [ -z "$1" ]
then
echo "No kernel version supplied"
exit 1
fi
if [ -z "$2" ]
then
echo "No debian suite supplied"
exit 1
fi
if [ -z "$3" ]
then
echo "No base file system image filename supplied"
exit 1
fi
if [ -z "$4" ]
then
echo "No prawnos_root path supplied"
exit 1
fi
if [ -z "$5" ]
then
echo "No shared scripts path supplied"
exit 1
fi
KVER=$1
DEBIAN_SUITE=$2
BASE=$3
PRAWNOS_ROOT=$4
PRAWNOS_SHARED_SCRIPTS=$5
outmnt=$(mktemp -d -p "$(pwd)")
outdev=/dev/loop5
install_resources=resources/InstallResources
build_resources=resources/BuildResources
# Import the package lists, shared scripts
source $PRAWNOS_SHARED_SCRIPTS/*
#A hacky way to ensure the loops are properly unmounted and the temp files are properly deleted.
#Without this, a reboot is sometimes required to properly clean the loop devices and ensure a clean build
cleanup() {
set +e
umount -l $outmnt > /dev/null 2>&1
rmdir $outmnt > /dev/null 2>&1
losetup -d $outdev > /dev/null 2>&1
umount -l $outmnt > /dev/null 2>&1
rmdir $outmnt > /dev/null 2>&1
losetup -d $outdev > /dev/null 2>&1
#delete the base file, we didn't complete our work
rm -rf $BASE
echo "FILESYSTEM BUILD FAILED"
exit 1
}
trap cleanup INT TERM EXIT
#layout the partitons and write filesystem information
create_image() {
dd if=/dev/zero of=$1 bs=$3 count=$4 conv=sparse
parted --script $1 mklabel gpt
cgpt create $1
kernel_start=8192
kernel_size=65536
cgpt add -i 1 -t kernel -b $kernel_start -s $kernel_size -l Kernel -S 1 -T 5 -P 10 $1
#Now the main filesystem
root_start=$(($kernel_start + $kernel_size))
end=`cgpt show $1 | grep 'Sec GPT table' | awk '{print $1}'`
root_size=$(($end - $root_start))
cgpt add -i 2 -t data -b $root_start -s $root_size -l Root $1
# $root_size is in 512 byte blocks while ext4 uses a block size of 1024 bytes
losetup -P $2 $1
mkfs.ext4 -F -b 1024 ${2}p2 $(($root_size / 2))
# mount the / partition
mount -o noatime ${2}p2 $5
}
# create a 2GB image with the Chrome OS partition layout
create_image $BASE $outdev 50M 40 $outmnt
# use default debootstrap mirror if none is specified
if [ "$PRAWNOS_DEBOOTSTRAP_MIRROR" = "" ]
then
PRAWNOS_DEBOOTSTRAP_MIRROR=http://ftp.us.debian.org/debian
fi
# install Debian on it
export DEBIAN_FRONTEND=noninteractive
# need ca-certs, gnupg, openssl to handle https apt links and key adding for deb.prawnos.com
printf -v debootstrap_debs_install_joined '%s,' "${debootstrap_debs_install[@]}"
qemu-debootstrap --arch armhf $DEBIAN_SUITE \
--include ${debootstrap_debs_install_joined%,} \
--keyring=$build_resources/debian-archive-keyring.gpg \
$outmnt \
$PRAWNOS_DEBOOTSTRAP_MIRROR \
--cache-dir=$PRAWNOS_ROOT/build/apt-cache/
chroot $outmnt passwd -d root
#Place the config files and installer script and give them the proper permissions
echo -n PrawnOS > $outmnt/etc/hostname
cp -R $install_resources/ $outmnt/InstallResources/
# and the icons for the lockscreen and app menu
mkdir $outmnt/InstallResources/icons/
cp $build_resources/logo/icons/icon-small.png $outmnt/InstallResources/icons/
cp $build_resources/logo/icons/ascii/* $outmnt/InstallResources/icons/
cp scripts/InstallScripts/* $outmnt/InstallResources/
cp $PRAWNOS_SHARED_SCRIPTS/package_lists.sh $outmnt/InstallResources/
cp scripts/InstallScripts/InstallPrawnOS.sh $outmnt/
chmod +x $outmnt/*.sh
#Setup the chroot for apt
#This is what https://wiki.debian.org/EmDebian/CrossDebootstrap suggests
cp /etc/hosts $outmnt/etc/
cp $build_resources/sources.list $outmnt/etc/apt/sources.list
cp $build_resources/prawnos.list $outmnt/etc/apt/sources.list.d/
sed -i -e "s/suite/$DEBIAN_SUITE/g" $outmnt/etc/apt/sources.list
sed -i -e "s/suite/$DEBIAN_SUITE/g" $outmnt/etc/apt/sources.list.d/prawnos.list
if [ "$DEBIAN_SUITE" != "sid" ]
then
# sid doesn't have updates or security; they're present for all other suites
cat $build_resources/updates.list >> $outmnt/etc/apt/sources.list
sed -i -e "s/suite/$DEBIAN_SUITE/g" $outmnt/etc/apt/sources.list
# sid doesn't have backports; it's present for all other suites
cp $build_resources/backports.list $outmnt/etc/apt/sources.list.d/
sed -i -e "s/suite/$DEBIAN_SUITE/g" $outmnt/etc/apt/sources.list.d/backports.list
#setup apt pinning
cp $build_resources/backports.pref $outmnt/etc/apt/preferences.d/
sed -i -e "s/suite/$DEBIAN_SUITE/g" $outmnt/etc/apt/preferences.d/backports.pref
# Install sid (unstable) as an additional source for bleeding edge packages.
cp $build_resources/sid.list $outmnt/etc/apt/sources.list.d/
#setup apt pinning
cp $build_resources/sid.pref $outmnt/etc/apt/preferences.d/
fi
if [ "$DEBIAN_SUITE" = "buster" ]
then
# Install bullseye (testing) as an additional source
cp $build_resources/bullseye.list $outmnt/etc/apt/sources.list.d/
#setup apt pinning
cp $build_resources/bullseye.pref $outmnt/etc/apt/preferences.d/
fi
#Bring in the deb.prawnos.com gpg keyring
cp $build_resources/deb.prawnos.com.gpg.key $outmnt/InstallResources/
chroot $outmnt apt-key add /InstallResources/deb.prawnos.com.gpg.key
chroot $outmnt apt update
#Setup the locale
cp $build_resources/locale.gen $outmnt/etc/locale.gen
chroot $outmnt locale-gen
#Install the base packages
chroot $outmnt apt update
chroot $outmnt apt install -y ${base_debs_install[@]}
#add the live-boot fstab
cp -f $build_resources/external_fstab $outmnt/etc/fstab
chmod 644 $outmnt/etc/fstab
#Cleanup to reduce install size
chroot $outmnt apt-get autoremove --purge
chroot $outmnt apt-get clean
#Download the shared packages to be installed by Install.sh:
chroot $outmnt apt-get install -y -d ${base_debs_download[@]}
## DEs
#Download the xfce packages to be installed by Install.sh:
chroot $outmnt apt-get install -y -d ${xfce_debs_download[@]}
#Download the lxqt packages to be installed by Install.sh:
chroot $outmnt apt-get install -y -d ${lxqt_debs_download[@]}
#Download the gnome packages to be installed by Install.sh:
chroot $outmnt apt-get install -y -d ${gnome_debs_download[@]}
# we want to include all of our built packages in the apt cache for installation later, but we want to let apt download dependencies
# if required
# this gets tricky when we build some of the dependencies. To avoid issues
# first, manually cache the deb
# apt install ./local-package.deb alone doesn't work because apt will resort to downloading it from deb.prawnos.com, which we dont want
# copy into /var/cache/apt/archives to place it in the cache
#next call apt install -d on the ./filename or on the package name and apt will recognize it already has the package cached, so will only cache the dependencies
#Copy the built prawnos debs over to the image, and update apts cache
cd $PRAWNOS_ROOT && make packages_install INSTALL_TARGET=$outmnt/var/cache/apt/archives/
chroot $outmnt apt install -y ${prawnos_base_debs_prebuilt_install[@]}
chroot $outmnt apt install -y -d ${prawnos_base_debs_prebuilt_download[@]}
chroot $outmnt apt install -y -d ${prawnos_xfce_debs_prebuilt_download[@]}
## GPU support
#download mesa packages
chroot $outmnt apt-get install -y -d ${mesa_debs_download[@]}
#Cleanup hosts
rm -rf $outmnt/etc/hosts #This is what https://wiki.debian.org/EmDebian/CrossDebootstrap suggests
echo -n "127.0.0.1 PrawnOS" > $outmnt/etc/hosts
# do a non-error cleanup
umount -l $outmnt > /dev/null 2>&1
rmdir $outmnt > /dev/null 2>&1
losetup -d $outdev > /dev/null 2>&1
echo "DONE!"
trap - INT TERM EXIT