Adapted pacstrap for ArchOS

manual-build/archos-bootstrap

@@ -0,0 +1,166 @@
+#!/bin/bash
+
+chroot_add_mount() {
+  mount "$@" && CHROOT_ACTIVE_MOUNTS=("$2" "${CHROOT_ACTIVE_MOUNTS[@]}")
+}
+
+chroot_setup() {
+  CHROOT_ACTIVE_MOUNTS=()
+  [[ $(trap -p EXIT) ]] && die '(BUG): attempting to overwrite existing EXIT trap'
+  trap 'chroot_teardown' EXIT
+
+  chroot_add_mount proc "$1/proc" -t proc -o nosuid,noexec,nodev &&
+  chroot_add_mount sys "$1/sys" -t sysfs -o nosuid,noexec,nodev,ro &&
+  ignore_error chroot_maybe_add_mount "[[ -d '$1/sys/firmware/efi/efivars' ]]" \
+      efivarfs "$1/sys/firmware/efi/efivars" -t efivarfs -o nosuid,noexec,nodev &&
+  chroot_add_mount udev "$1/dev" -t devtmpfs -o mode=0755,nosuid &&
+  chroot_add_mount devpts "$1/dev/pts" -t devpts -o mode=0620,gid=5,nosuid,noexec &&
+  chroot_add_mount shm "$1/dev/shm" -t tmpfs -o mode=1777,nosuid,nodev &&
+  chroot_add_mount /run "$1/run" --bind --make-private &&
+  chroot_add_mount tmp "$1/tmp" -t tmpfs -o mode=1777,strictatime,nodev,nosuid
+}
+
+chroot_teardown() {
+  if (( ${#CHROOT_ACTIVE_MOUNTS[@]} )); then
+    umount "${CHROOT_ACTIVE_MOUNTS[@]}"
+  fi
+  unset CHROOT_ACTIVE_MOUNTS
+}
+
+pid_unshare="unshare --fork --pid"
+
+hostcache=0
+copykeyring=1
+initkeyring=0
+copymirrorlist=1
+pacman_args=()
+pacmode=-Sy
+copyconf=0
+pacman_config=/etc/pacman.conf
+
+usage() {
+  cat <<EOF
+usage: $(basename "$0") [options] root [packages...]
+
+  Options:
+    -C <config>    Use an alternate config file for pacman
+    -c             Use the package cache on the host, rather than the target
+    -D             Skip pacman dependency checks
+    -G             Avoid copying the host's pacman keyring to the target
+    -i             Prompt for package confirmation when needed (run interactively)
+    -K             Initialize an empty pacman keyring in the target (implies '-G')
+    -M             Avoid copying the host's mirrorlist to the target
+    -P             Copy the host's pacman config to the target
+    -U             Use pacman -U to install packages
+
+    -h             Print this help message
+
+$(basename "$0") installs packages to the specified new root directory. If no packages
+are given, $(basename "$0") defaults to the "base" group.
+
+EOF
+}
+
+pacstrap() {
+  (( EUID == 0 )) || die 'This script must be run with root privileges'
+
+  # create obligatory directories
+  msg 'Creating install root at %s' "$newroot"
+  # shellcheck disable=SC2174 # permissions are perfectly fine here
+  mkdir -m 0755 -p "$newroot"/var/{cache/pacman/pkg,lib/pacman,log} "$newroot"/{dev,run,etc/pacman.d}
+  # shellcheck disable=SC2174 # permissions are perfectly fine here
+  mkdir -m 1777 -p "$newroot"/tmp
+  # shellcheck disable=SC2174 # permissions are perfectly fine here
+  mkdir -m 0555 -p "$newroot"/{sys,proc}
+
+  # mount API filesystems
+  $setup "$newroot" || die "failed to setup chroot %s" "$newroot"
+
+  if [[ ! -d $newroot/etc/pacman.d/gnupg ]]; then
+    if (( initkeyring )); then
+      pacman-key --gpgdir "$newroot"/etc/pacman.d/gnupg --init
+    elif (( copykeyring )) && [[ -d /etc/pacman.d/gnupg ]]; then
+      # if there's a keyring on the host, copy it into the new root
+      cp -a --no-preserve=ownership /etc/pacman.d/gnupg "$newroot/etc/pacman.d/"
+    fi
+  fi
+
+  ########################
+    msg 'Installing packages to %s' "$newroot"
+    if ! $pid_unshare pacman -r "$newroot" "${pacman_args[@]}"; then
+      die 'Failed to install packages to new root'
+    fi
+  ########################
+
+  if (( copymirrorlist )); then
+    # install the host's mirrorlist onto the new root
+    cp -a /etc/pacman.d/mirrorlist "$newroot/etc/pacman.d/"
+  fi
+
+  if (( copyconf )); then
+    cp -a "$pacman_config" "$newroot/etc/pacman.conf"
+  fi
+}
+
+if [[ -z $1 || $1 = @(-h|--help) ]]; then
+  usage
+  exit $(( $# ? 0 : 1 ))
+fi
+
+while getopts ':C:cDGiKMNPU' flag; do
+  case $flag in
+    C)
+      pacman_config=$OPTARG
+      ;;
+    D)
+      pacman_args+=(-dd)
+      ;;
+    c)
+      hostcache=1
+      ;;
+    i)
+      interactive=1
+      ;;
+    G)
+      copykeyring=0
+      ;;
+    K)
+      initkeyring=1
+      ;;
+    M)
+      copymirrorlist=0
+      ;;
+    P)
+      copyconf=1
+      ;;
+    U)
+      pacmode=-U
+      ;;
+    :)
+      die '%s: option requires an argument -- '\''%s'\' "${0##*/}" "$OPTARG"
+      ;;
+    ?)
+      die '%s: invalid option -- '\''%s'\' "${0##*/}" "$OPTARG"
+      ;;
+  esac
+done
+shift $(( OPTIND - 1 ))
+
+(( $# )) || die "No root directory specified"
+newroot=$1
+shift
+
+[[ -d $newroot ]] || die "%s is not a directory" "$newroot"
+
+pacman_args+=("$pacmode" "${@:-base}" --config="$pacman_config")
+
+if (( ! hostcache )); then
+  pacman_args+=(--cachedir="$newroot/var/cache/pacman/pkg")
+fi
+
+if (( ! interactive )); then
+  pacman_args+=(--noconfirm)
+fi
+
+setup=chroot_setup
+pacstrap