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