Initial commit

README.md

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+# androot
+Chroot and systemd-nspawn rootfs installer
+
+# Experimental
+androot is experimental software and can lead to breakage! \
+Only run these scripts with extensive knowledge of Linux (and Android if using Termux)!
+
+# How to use
+## Termux
+### WARNING
+If you want to use **androot** under Android you need a working Magisk or KernelSU installation. \
+If you wish to install a (more limited) Linux distribution without root access use [Andronix](https://play.google.com/store/apps/details?id=studio.com.techriz.andronix) instead. \
+### Dependencies
+- Magisk/KernelSU
+- curl
+- bash
+- chroot
+- bsdtar
+- tsu
+### Use
+`curl -sSL "https://git.staropensource.de/StarOpenSource/androot/raw/branch/master/androot.sh"|sudo bash - --download`
+
+## Linux
+### Dependencies
+- curl
+- bash
+- chroot/systemd-nspawn
+- bsdtar
+### Use
+`curl -sSL "https://git.staropensource.de/StarOpenSource/androot/raw/branch/master/androot.sh"|sudo bash - --download`
+
+# Architectures
+## Supported (target architectures)
+- x86_64 (amd64)
+- arm64 (aarch64)
+## Supported (execution architectures)
+- x86_64 (amd64)
+- arm64 (aarch64)
+- powerpc64 (ppc64,ppc64le)
+- mips64
+## Unsupported
+- x86 (i386,i686)
+- arm
+- powerpc (ppc,ppcle)
+- mips
+
+# Distributions
+- Arch Linux
+
+# How does this work?
+## tldr
+We download & decompress a rootfs, apply some magic and make it useable with the help of `chroot` or `systemd-nspawn`.
+## The short answer
+1. check architecture
+2. ask for target architecture, execution architecture(s) and distribution
+3. download rootfs
+4. decompress rootfs
+5. mount rootfs
+6. install updates and bootscript dependencies
+7. apply patches (if using chroot)
+8. download bootscripts
+9. unmount rootfs
+10. finish and print information about how to "boot" the rootfs
+## The long answer
+Just read the source code.
+
+# How to test
+`if shellcheck *.sh; then sudo env DIAG=true ./androot.sh --local; else echo ":: shellcheck failed, please resolve these errors"; fi`
+
+# Annotations
+```plain
+### TOBECHANGED     -  this should be changed in the future
+### UNIMPLEMENTED   -  not yet finished
+### EXPERIMENTAL    -  experimental code, probably not safe yet
+### MISIMPLEMENTED  -  implemented, but wrong
+```

androot.sh

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+#!/bin/bash
+# shellcheck disable=SC2181 disable=SC1091 disable=SC2236
+### TOBECHANGED
+# shellcheck disable=SC2317
+### TOBECHANGED_END
+
+# Check if root
+if [ ! "${UID}" == "0" ]; then
+  echo ":: Error: Not running as root user"
+  exit 1
+fi
+
+# Determine $TMPDIR
+if [ ! -d "${TMPDIR}" ]; then
+  if [ -d "/tmp" ]; then
+    export "TMPDIR=/tmp/androot/"
+  elif [ -d "/data/tmp" ]; then
+    export "TMPDIR=/data/tmp/androot/"
+  else
+    echo ":: Error: \$TMPDIR could not be determined"
+    exit 1
+  fi
+fi
+mkdir -p "${TMPDIR}"
+
+# Write source file
+cat << EOF > "${TMPDIR}/androot.source"
+# Functions
+## Indicate failure
+function log_fail() {
+  echo -e "\r\e[0m[\e[0;31mFAIL\e[0m]"
+}
+## Indicate success
+function log_ok() {
+  echo -e "\r\e[0m[\e[0;32m OK \e[0m]"
+}
+## Indicate running execution
+function log_exec() {
+  echo -ne "\e[0m[\e[0;34m....\e[0m] \${*}"
+}
+## Diagnostic logging
+function log_diag() {
+  if [ "\$DIAG" == "true" ]; then echo -e "\e[0m[\e[0;35mDIAG\e[0m] \${*}"; fi
+}
+## Informational logging
+function log_info() {
+  echo -e "\r\e[0m[\e[0;32mINFO\e[0m] \${*}"
+}
+## Warning logging
+function log_warn() {
+  echo -e "\r\e[0m[\e[0;33mWARN\e[0m] \${*}"
+}
+## Error logging
+function log_error() {
+  echo -e "\r\e[0m[\e[0;31mERR!\e[0m] \${*}"
+}
+## Ask a question
+function log_ask() {
+  echo -ne "\e[0m[\e[0;36mASKQ\e[0m] \${*}"
+  read -r ANSWER
+}
+## Ask for password
+function log_askpasswd() {
+  echo -ne "\e[0m[\e[0;36mASKP\e[0m] \${*}"
+  read -rs ANSWER
+  echo ""
+}
+## Ask for yes or no (agreement)
+function log_askyn() {
+  if [ -z "\${2}" ]; then
+    log_error "log_askyn requires at least two arguments"
+    exit 1
+  fi
+  export "ANSWER_FALLBACK=\${1}"
+  shift
+  echo -ne "\e[0m[\e[0;36mASKA\e[0m] \${*}"
+  read -r ANSWER
+  if [ "\${ANSWER,,}" == "y" ] || [ "\${ANSWER,,}" == "yes" ] || [ "\${ANSWER,,}" == "true" ] || [ "\${ANSWER}" == "" ]; then
+    export "ANSWER=true"
+  elif [ "\${ANSWER,,}" == "n" ] || [ "\${ANSWER,,}" == "no" ] || [ "\${ANSWER,,}" == "false" ]; then
+    export "ANSWER=false"
+  else
+    export "ANSWER=\$ANSWER_FALLBACK"
+  fi
+}
+
+# Global variables
+## $DOWNLOADSERVER_ROOTFS
+export "DOWNLOADSERVER_ROOTFS=https://fs.staropensource.de/rootfs/"
+## $DOWNLOADSERVER_QEMUSTATIC
+export "DOWNLOADSERVER_QEMUSTATIC=https://fs.staropensource.de/qemu-static/"
+## $DOWNLOADSERVER_BOOTSCRIPTS
+export "DOWNLOADSERVER_BOOTSCRIPTS=https://git.staropensource.de/StarOpenSource/androot/raw/branch/develop/"
+## $ARCH
+case "$(uname -m)" in
+  # 64-bit architectures (supported)
+  x86_64|amd64)
+    export "ARCH=x86_64";;
+  aarch64|aarch64_be|armv8b|armv8l)
+    export "ARCH=arm64";;
+  ppc64|ppc64le)
+    export "ARCH=powerpc64";;
+  mips64)
+    export "ARCH=mips64";;
+  
+  # 32-bit architectures (unsupported)
+  x86|i386|i686)
+    export "ARCH=x86";;
+  arm)
+    export "ARCH=arm";;
+  powerpc|ppc|ppcle)
+    export "ARCH=powerpc";;
+  mips)
+    export "ARCH=mips";;
+  *)
+    export "ARCH=unknown";;
+esac
+## $IS_ANDROID
+if [ -d "/system" ] && [ -d "/data" ] && [ -d "/data/data" ] && [ ! -d "/home" ] && [ ! -d "/root" ]; then
+  export "IS_ANDROID=true"
+else
+  export "IS_ANDROID=false"
+fi
+EOF
+
+# Display banner
+echo -e "\e[0;33m ______  __  __  ____    ____    _____   _____   ______"
+echo -e "\e[0;33m/\\  _  \\/\\ \\/\\ \\/\\  _\`\\ /\\  _\`\\ /\\  __\`\\/\\  __\`\\/\\__  _\\"
+echo -e "\e[0;33m\\ \\ \\L\\ \\ \\ \`\\\\ \\ \\ \\/\\ \\ \\ \\L\\ \\ \\ \\/\\ \\ \\ \\/\\ \\/_/\\ \\/"
+echo -e "\e[0;33m \\ \\  __ \\ \\ , \` \\ \\ \\ \\ \\ \\ ,  /\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\"
+echo -e "\e[0;33m  \\ \\ \\/\\ \\ \\ \\\`\\ \\ \\ \\_\\ \\ \\ \\\\ \\\\ \\ \\_\\ \\ \\ \\_\\ \\ \\ \\ \\"
+echo -e "\e[0;33m   \\ \\_\\ \\_\\ \\_\\ \\_\\ \\____/\\ \\_\\ \\_\\ \\_____\\ \\_____\\ \\ \\_\\"
+echo -e "\e[0;33m    \\/_/\\/_/\\/_/\\/_/\\/___/  \\/_/\\/ /\\/_____/\\/_____/  \\/_/"
+
+# Load source file
+source "${TMPDIR}/androot.source"
+
+# Clear/create log file
+{
+  # if in diagnostic mode, print newlines
+  ## reading the log output using tail during
+  ## development with this is so much better, believe me
+  if [ "${DIAG}" == "true" ]; then echo -e "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n"; fi
+  echo "#### System information"
+  echo "architecture ${ARCH}"
+  echo "is_android ${IS_ANDROID}"
+  echo "download_server_rootfs ${DOWNLOADSERVER_ROOTFS}"
+  echo "download_server_qemustatic ${DOWNLOADSERVER_QEMUSTATIC}"
+  echo "download_server_bootscripts ${DOWNLOADSERVER_BOOTSCRIPTS}"
+  echo "args ${*}"
+  echo "diag ${DIAG}"
+  echo "#### System information"
+} &> "${TMPDIR}/androot.log"
+
+# Diagnostic mode
+log_diag "Diagnostic mode enabled"
+log_diag "Arguments: ${*}"
+
+# Check architecture
+case "${ARCH}" in
+  "unknown")
+    log_error "androot failed to detect your architecture. If you believe this is a bug, create a issue at \"https://git.staropensource.de/StarOpenSource/androot\"."
+    exit 1
+    ;;
+  "x86"|"arm"|"powerpc"|"mips")
+    log_error "androot does not support legacy 32-bit systems, please use a 64-bit system instead."
+    exit 1
+    ;;
+esac
+
+if [ "${1}" == "--local" ]; then
+  log_diag "Using local mode"
+  env "TMPDIR=${TMPDIR}" ./prepare.sh
+  env "TMPDIR=${TMPDIR}" ./rootfsinstall.sh --download
+  env "TMPDIR=${TMPDIR}" ./rootfsinstall.sh --decompress
+  env "TMPDIR=${TMPDIR}" ./mount.sh --mount
+  env "TMPDIR=${TMPDIR}" ./bootscriptdl.sh --download
+  exit 0
+  env "TMPDIR=${TMPDIR}" ./bootscriptdl.sh --configure
+  env "TMPDIR=${TMPDIR}" ./bootscriptdl.sh --download-qemu
+  env "TMPDIR=${TMPDIR}" ./installsystem.sh --configure
+  env "TMPDIR=${TMPDIR}" ./installsystem.sh --update
+  env "TMPDIR=${TMPDIR}" ./patch.sh
+  env "TMPDIR=${TMPDIR}" ./mount.sh --unmount
+  env "TMPDIR=${TMPDIR}" ./finish.sh
+elif [ "${1}" == "--download" ]; then
+  log_diag "Using download mode"
+  ### UNIMPLEMENTED
+  log_exec Downloading files
+  log_fail
+  exit 1
+  ### UNIMPLEMENTED_END
+elif [ "${1}" == "--help" ]; then
+  log_diag "Displaying help"
+  log_info "Available arguments:"
+  log_info "--local [execute androot from cwd] --download [download androot scripts and execute] --help [display args and vars]"
+  log_info "Available environment variables:"
+  log_info "DIAG [displays or hides diagnostic messages, true/false]"
+else
+  log_diag "i thought putting a little \"advertisement parody\" in here would be funny"
+  log_error "StarOpenSource is happy to present the latest and greatest version of --help! --help now uses cutting edge technology to display the most useful help to you, and that for only zero dollars!"
+fi

bootscriptdl.sh

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+#!/bin/bash
+# shellcheck disable=SC2181 disable=SC1091 disable=SC2236
+
+source "${TMPDIR}/androot.source"
+source "${TMPDIR}/androot.env"
+log_diag "rootfsinstall is now executing, with arguments \"${*}\""
+
+case "${1}" in
+  "--download")
+    log_diag "Using download mode"
+    log_exec "Downloading bootscripts"
+    cd "${LOCATION}/bootscripts"||{ log_error "cd failed";exit 1; }
+    git clone "${DOWNLOADSERVER_BOOTSCRIPTS}" . &>> "${TMPDIR}/androot.log"
+    if [ ! "${?}" == "0" ]; then
+      log_fail
+      exit 1
+    fi
+    git checkout develop-bootscripts &>> "${TMPDIR}/androot.log"
+    if [ ! "${?}" == "0" ]; then
+      log_fail
+      exit 1
+    fi
+    log_ok;;
+  "--configure")
+    log_diag "Using configure mode"
+    log_exec "Configuring bootscript scripts"
+    cd "${LOCATION}/bootscripts/"||{ log_error "cd failed";exit 1; }
+    cat << EOF >> "${LOCATION}/bootscripts/config.env"
+COMMIT=$(git rev-parse HEAD)
+LOCATION=${LOCATION}
+IS_ANDROID=${IS_ANDROID}
+EOF
+    log_ok;;
+  "--download-qemu")
+    log_diag "Using download qemu mode"
+    ### UNIMPLEMENTED
+    log_exec "Downloading qemu-static binaries"
+    log_fail;;
+    ### UNIMPLEMENTED
+  *)
+    log_error "--download or --decompress required"
+    exit 1;;
+esac

mount.sh

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+#!/bin/bash
+# shellcheck disable=SC2181 disable=SC1091 disable=SC2236
+# shellcheck disable=SC2068
+
+source "${TMPDIR}/androot.source"
+source "${TMPDIR}/androot.env"
+log_diag "mount is now executing, with arguments \"${*}\""
+
+function mount_fail() {
+  echo "#### mount ${1}" &>> "${TMPDIR}/androot.log"
+  shift
+  mount ${@} &>> "${TMPDIR}/androot.log"
+  if [ ! "${?}" == "0" ]; then
+    log_fail
+    exit 1
+  fi
+}
+function unmount_fail() {
+  echo "#### unmount ${1}" &>> "${TMPDIR}/androot.log"
+  shift
+  umount ${@} &>> "${TMPDIR}/androot.log"
+  if [ ! "${?}" == "0" ]; then
+    log_fail
+    exit 1
+  fi
+}
+
+case "${1}" in
+  "--mount")
+    log_diag "Using mount mode"
+    mkdir -p "${LOCATION}/mountdir"
+    if [ "${IS_ANDROID}" == "true" ]; then
+      log_exec "Remounting /data"
+      mount_fail "/data (remount)" "/data" -o remount,suid,exec
+      log_ok
+    fi
+    log_exec "Mounting rootfs"
+    mount_fail "rootfs" --bind "${LOCATION}/rootfs" "${LOCATION}/mountdir" -o rw,suid,dev,exec,auto,nouser,async
+    log_ok
+    log_exec "Binding directories"
+    mount_fail "/dev" --bind "/dev" "${LOCATION}/mountdir/dev"
+    mount_fail "/dev/pts" --bind "/dev/pts" "${LOCATION}/mountdir/dev/pts"
+    mount_fail "/sys" --bind "/sys" "${LOCATION}/mountdir/sys"
+    mount_fail "/proc" --bind "/proc" "${LOCATION}/mountdir/proc"
+    log_ok;;
+  "--unmount")
+    log_diag "Using unmount mode"
+    log_exec "Unmounting binds"
+    unmount_fail "/dev/pts" "${LOCATION}/mountdir/dev/pts"
+    unmount_fail "/dev" "${LOCATION}/mountdir/dev"
+    unmount_fail "/sys" "${LOCATION}/mountdir/sys"
+    unmount_fail "/proc" "${LOCATION}/mountdir/proc"
+    log_ok
+    log_exec "Unmounting rootfs"
+    unmount_fail "rootfs" "${LOCATION}/mountdir"
+    log_ok;;
+  *)
+    log_error "--mount or --unmount required"
+    exit 1;;
+esac

prepare.sh

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+#!/bin/bash
+# shellcheck disable=SC2181 disable=SC1091 disable=SC2236
+
+source "${TMPDIR}/androot.source"
+log_diag "prepare is now executing, with arguments \"${*}\""
+
+function arch_target() {
+  log_info ""
+  log_info "Please select your target architecture"
+  log_info "Note: The target architecture may be different from the current"
+  log_info "      architecture as it will be emulated with qemu-static (with"
+  log_info "      a slight performance penality)."
+  log_info "Available target architectures: x86_64, arm64"
+  log_ask "Target architecture: "
+  case "${ANSWER,,}" in
+    "x86_64") ;;
+    "arm64") ;;
+    *)
+      log_error "Invalid target architecture \"${ANSWER,,}\", please retry."
+      arch_target
+      return;;
+  esac
+  echo "ARCH_TARGET=${ANSWER,,}" > "${TMPDIR}/androot.env"
+}
+function arch_executers() {
+  log_info ""
+  log_info "Please specify the execution architecture(s)"
+  log_info "Note: A qemu-static binary is downloaded for each execution"
+  log_info "      architecture. If you intend on running the rootfs on this"
+  log_info "      machine only, leave this field empty. Multiple architectures"
+  log_info "      can be specified, if you want."
+  log_info "Available execution architectures: x86_64, arm64, powerpc64, mips64"
+  log_ask "Execution architecture(s): "
+  ### MISIMPLEMENTED
+  case "${ANSWER}" in
+    "x86_64") ;;
+    "arm64") ;;
+    "powerpc64") ;;
+    "mips64") ;;
+    "")
+      export "ANSWER=${ARCH}"
+      ;;
+    *)
+      log_error "Invalid execution architecture \"${ANSWER,,}\", please retry."
+      arch_executers
+      return;;
+  esac
+  ### MISIMPLEMENTED
+  echo "ARCH_EXECUTERS=${ANSWER}" >> "${TMPDIR}/androot.env"
+}
+function distribution() {
+  log_info ""
+  log_info "Please select the target distribution"
+  log_info "Note: Each distribution you select here will be compatible"
+  log_info "      with every target architecture, unless noted."
+  log_info "Available distributions: archlinux"
+  log_ask "Target distribution: "
+  case "${ANSWER,,}" in
+    "archlinux") ;;
+    *)
+      log_error "Invalid distribution \"${ANSWER,,}\", please retry."
+      distribution
+      return;;
+  esac
+  echo "DISTRIBUTION=${ANSWER,,}" >> "${TMPDIR}/androot.env"
+}
+function location() {
+  log_info ""
+  log_info "Please enter the rootfs location"
+  ### TOBECHANGED
+  log_info "Note: This location is permanent and cannot be"
+  log_info "      changed as of now."
+  ### TOBECHANGED_END
+  log_ask "Location: "
+  case "${ANSWER}" in
+    /tmp*|/dev/shm/*)
+      log_error "Using /tmp or /dev/shm is unsupported as you may run into disk space issues very quickly, please retry."
+      location
+      return;;
+    /dev|/proc|/run|/sys|/dev/*|/proc/*|/run/*|/sys/*)
+      log_error "Are you really trying that?"
+      location
+      return ;;
+    /)
+      log_error "you're making a recipe for desaster."
+      location
+      return ;;
+  esac
+  if [ -a "${ANSWER}" ] && [ ! -d "${ANSWER}" ]; then
+    log_error "The location exists but is not a directory."
+    location
+    return
+  fi
+  if [ -d "${ANSWER}" ]; then
+    if [ ! -z "$(ls -A "${ANSWER}")" ]; then
+      log_error "The location directory is not empty."
+      location
+      return
+    fi
+  else
+    log_info "Creating location directory"
+    mkdir -p "${ANSWER}/rootfs" "${ANSWER}/bootscripts"
+  fi
+  echo "LOCATION=${ANSWER}" >> "${TMPDIR}/androot.env"
+}
+
+arch_target
+arch_executers
+distribution
+location
+
+log_diag "androot.env:\n$(cat "${TMPDIR}/androot.env")"
+{
+  echo "#### rootfs configuration"
+  cat "${TMPDIR}/androot.env"
+  echo "#### rootfs configuration"
+}&>> "${TMPDIR}/androot.log"

rootfsbuilder/.gitignore

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+# directories
+archlinux-x86_64
+archlinux-arm64
+
+# downloaded rootfs
+archlinux-arm64-rootfs.tar.gz
+
+# archived rootfs
+archlinux-x86_64.tar
+archlinux-arm64.tar
+
+# compressed rootfs
+archlinux-x86_64.tar.gz
+archlinux-arm64.tar.gz

rootfsbuilder/archlinux-arm64.sh

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+#!/bin/bash
+set -euo pipefail
+shopt -s inherit_errexit
+if [ ! "${UID}" == "0" ]; then
+	echo ":: Error: root user required"
+	exit 1
+fi
+DISTRIBUTION=archlinux
+ARCH=arm64
+echo ":: Generating rootfs for ${DISTRIBUTION}-${ARCH}"
+if [ -f "./${DISTRIBUTION}-${ARCH}.tar.gz" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}.tar.gz"
+	rm -rf "./${DISTRIBUTION}-${ARCH}.tar.gz"
+fi
+if [ -f "./${DISTRIBUTION}-${ARCH}.tar" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}.tar"
+	rm -rf "./${DISTRIBUTION}-${ARCH}.tar"
+fi
+if [ -d "./${DISTRIBUTION}-${ARCH}" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}"
+	rm -rf "./${DISTRIBUTION}-${ARCH}"
+fi
+if [ -f "./${DISTRIBUTION}-${ARCH}-rootfs.tar" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}-rootfs.tar"
+	rm -rf "./${DISTRIBUTION}-${ARCH}-rootfs.tar"
+fi
+mkdir -p "./${DISTRIBUTION}-${ARCH}"
+cd "./${DISTRIBUTION}-${ARCH}"
+echo ":: Downloading rootfs"
+wget "http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz" -O "../${DISTRIBUTION}-${ARCH}-rootfs.tar.gz"
+echo ":: Decompressing rootfs"
+bsdtar -xpf "../${DISTRIBUTION}-${ARCH}-rootfs.tar.gz" -C "."
+rm -rf "../${DISTRIBUTION}-${ARCH}-rootfs.tar.gz"
+echo ":: Binding"
+mount --bind /dev "./dev"
+mount --bind /dev/pts "./dev/pts"
+mount --bind /dev/shm "./dev/shm"
+mount --bind /sys "./sys"
+mount --bind /proc "./proc"
+mount --bind /run "./run"
+echo ":: Removing packages"
+cp "$(which qemu-aarch64-static)" "./bin/qemu-aarch64-static"
+echo -e "pacman -R --noconfirm dhcpcd linux-aarch64 nano net-tools netctl openssh vi which\npacman -R \$(pacman -Qdtq) --recursive --unneeded --noconfirm" > "./clean.sh"
+chmod +x "./clean.sh"
+chroot . /bin/qemu-aarch64-static /bin/bash -c /clean.sh
+echo ":: Removing files"
+rm -rf "./clean.sh" "./bin/qemu-aarch64-static" "./boot/*"
+echo ":: Unmounting"
+bash -c "umount ./{dev/pts,dev/shm,dev,sys,proc,run};exit 0"
+echo ":: Archiving rootfs"
+tar --acls -cpf "../${DISTRIBUTION}-${ARCH}.tar" ./*
+cd ..
+rm -rf "./${DISTRIBUTION}-${ARCH}"
+echo ":: Compressing rootfs"
+gzip --best ${DISTRIBUTION}-${ARCH}.tar
+rm -rf "./${DISTRIBUTION}-${ARCH}.tar"
+echo ":: Generated rootfs for ${DISTRIBUTION}-${ARCH}"

rootfsbuilder/archlinux-x86_64.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+set -euo pipefail
+shopt -s inherit_errexit
+if [ ! "${UID}" == "0" ]; then
+	echo ":: Error: root user required"
+	exit 1
+fi
+DISTRIBUTION=archlinux
+ARCH=x86_64
+echo ":: Generating rootfs for ${DISTRIBUTION}-${ARCH}"
+if [ -f "./${DISTRIBUTION}-${ARCH}.tar.gz" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}.tar.gz"
+	rm -rf "./${DISTRIBUTION}-${ARCH}.tar.gz"
+fi
+if [ -f "./${DISTRIBUTION}-${ARCH}.tar" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}.tar"
+	rm -rf "./${DISTRIBUTION}-${ARCH}.tar"
+fi
+if [ -d "./${DISTRIBUTION}-${ARCH}" ]; then
+	echo ":: Removing ${DISTRIBUTION}-${ARCH}"
+	rm -rf "./${DISTRIBUTION}-${ARCH}"
+fi
+mkdir -p "./${DISTRIBUTION}-${ARCH}"
+cd "./${DISTRIBUTION}-${ARCH}"
+echo ":: Installing system"
+pacstrap -c -G -K -M -P . base
+echo ":: Unmounting (safety measure)"
+bash -c "umount ./{dev/pts,dev/shm,dev,sys,proc,run};exit 0"
+echo ":: Archiving rootfs"
+tar --acls -cpf "../${DISTRIBUTION}-${ARCH}.tar" ./*
+cd ..
+rm -rf "./${DISTRIBUTION}-${ARCH}"
+echo ":: Compressing rootfs"
+gzip --best ${DISTRIBUTION}-${ARCH}.tar
+rm -rf "./${DISTRIBUTION}-${ARCH}.tar"
+echo ":: Generated rootfs for ${DISTRIBUTION}-${ARCH}"

rootfsinstall.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+# shellcheck disable=SC2181 disable=SC1091 disable=SC2236
+
+source "${TMPDIR}/androot.source"
+source "${TMPDIR}/androot.env"
+log_diag "rootfsinstall is now executing, with arguments \"${*}\""
+
+case "${1}" in
+  "--download")
+    log_diag "Using download mode"
+    if [ -f "${TMPDIR}/rootfs.env" ]; then
+      source "${TMPDIR}/rootfs.env"
+      if [ "${ARCH_TARGET_WRITTEN}" == "${ARCH_TARGET}" ] && [ "${DISTRIBUTION_WRITTEN}" == "${DISTRIBUTION}" ]; then
+        echo "#### found existing rootfs archive" &>> "${TMPDIR}/androot.log"
+        log_askyn "true" "androot found a existing rootfs archive matching your configuration, do you want to use it? "
+        if [ "${ANSWER}" == "true" ]; then
+          echo "#### skipping download" &>> "${TMPDIR}/androot.log"
+          exit 0
+        else
+          echo "#### removing existing rootfs archive" &>> "${TMPDIR}/androot.log"
+          rm -rf "${TMPDIR}/rootfs.tar.gz"
+        fi
+      else
+        echo "#### removing existing rootfs archive" &>> "${TMPDIR}/androot.log"
+        log_diag "Removing existing rootfs archive (not matching)"
+        rm -rf "${TMPDIR}/rootfs.tar.gz"
+      fi
+    fi
+    log_exec "Downloading rootfs"
+    case "${ARCH_TARGET}" in
+      "x86_64") ;;
+      "arm64") ;;
+      *)
+        echo "#### invalid architecture \"${ARCH_TARGET}\"" &>> "${TMPDIR}/androot.log"
+        log_fail
+        log_error "Internal inconsistency detected: Invalid target architecture \"${ARCH_TARGET}\""
+        exit 1;;
+    esac
+    case "${DISTRIBUTION}" in
+      "archlinux") ;;
+      *)
+        echo "#### invalid distribution \"${DISTRIBUTION}\"" &>> "${TMPDIR}/androot.log"
+        log_fail
+        log_error "Internal inconsistency detected: Invalid distribution \"${DISTRIBUTION}\""
+        exit 1;;
+    esac
+    echo "#### download rootfs (${DOWNLOADSERVER_ROOTFS}${DISTRIBUTION}-${ARCH_TARGET}.tar.gz)" &>> "${TMPDIR}/androot.log"
+    wget "${DOWNLOADSERVER_ROOTFS}${DISTRIBUTION}-${ARCH_TARGET}.tar.gz" -qqq -O "${TMPDIR}/rootfs.tar.gz" &>> "${TMPDIR}/androot.log"
+    if [ ! -f "${TMPDIR}/rootfs.tar.gz" ]; then
+      echo "#### rootfs not present" &>> "${TMPDIR}/androot.log"
+      log_fail
+    fi
+    echo -e "ARCH_TARGET_WRITTEN=${ARCH_TARGET}\nDISTRIBUTION_WRITTEN=${DISTRIBUTION}" > "${TMPDIR}/rootfs.env"
+    log_ok;;
+  "--decompress")
+    log_diag "Using decompress mode"
+    log_exec "Decompressing archive"
+    echo "#### decompress rootfs" &>> "${TMPDIR}/androot.log"
+    bsdtar -xpf "${TMPDIR}/rootfs.tar.gz" -C "${LOCATION}/rootfs" &>> "${TMPDIR}/androot.log"
+    if [ ! "${?}" == "0" ]; then
+      echo "#### bsdtar failed" &>> "${TMPDIR}/androot.log"
+      log_fail
+      exit 1
+    fi
+    log_ok;;
+  *)
+    log_error "--download or --decompress required"
+    exit 1;;
+esac