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Diffstat (limited to 'src/arch-nspawn.in')
| -rw-r--r-- | src/arch-nspawn.in | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/arch-nspawn.in b/src/arch-nspawn.in new file mode 100644 index 0000000..275cff7 --- /dev/null +++ b/src/arch-nspawn.in @@ -0,0 +1,130 @@ +#!/bin/bash +# +# SPDX-License-Identifier: GPL-3.0-or-later + +m4_include(lib/common.sh) +m4_include(lib/archroot.sh) + +# umask might have been changed in /etc/profile +# ensure that sane default is set again +umask 0022 + +working_dir='' + +files=() +mount_args=() + +usage() { + echo "Usage: ${0##*/} [options] working-dir [systemd-nspawn arguments]" + echo "A wrapper around systemd-nspawn. Provides support for pacman." + echo + echo ' options:' + echo ' -C <file> Location of a pacman config file' + echo ' -M <file> Location of a makepkg config file' + echo ' -c <dir> Set pacman cache' + echo ' -f <file> Copy file from the host to the chroot' + echo ' -s Do not run setarch' + echo ' -h This message' + exit 1 +} + +while getopts 'hC:M:c:f:s' arg; do + case "$arg" in + C) pac_conf="$OPTARG" ;; + M) makepkg_conf="$OPTARG" ;; + c) cache_dirs+=("$OPTARG") ;; + f) files+=("$OPTARG") ;; + s) nosetarch=1 ;; + h|?) usage ;; + *) error "invalid argument '%s'" "$arg"; usage ;; + esac +done +shift $((OPTIND - 1)) + +(( $# < 1 )) && die 'You must specify a directory.' +check_root + +working_dir=$(readlink -f "$1") +shift 1 + +[[ -z $working_dir ]] && die 'Please specify a working directory.' + +if (( ${#cache_dirs[@]} == 0 )); then + mapfile -t cache_dirs < <(pacman-conf --config "${pac_conf:-$working_dir/etc/pacman.conf}" CacheDir) +fi + +# shellcheck disable=2016 +host_mirrors=($(pacman-conf --repo extra Server 2> /dev/null | sed -r 's#(.*/)extra/os/.*#\1$repo/os/$arch#')) + +for host_mirror in "${host_mirrors[@]}"; do + if [[ $host_mirror == *file://* ]]; then + host_mirror=$(echo "$host_mirror" | sed -r 's#file://(/.*)/\$repo/os/\$arch#\1#g') + for m in "$host_mirror"/pool/*/; do + in_array "$m" "${cache_dirs[@]}" || cache_dirs+=("$m") + done + fi +done + +while read -r line; do + mapfile -t lines < <(pacman-conf --config "${pac_conf:-$working_dir/etc/pacman.conf}" \ + --repo $line Server | sed -r 's#(.*/)[^/]+/os/.+#\1#') + for line in "${lines[@]}"; do + if [[ $line = file://* ]]; then + line=${line#file://} + in_array "$line" "${cache_dirs[@]}" || cache_dirs+=("$line") + fi + done +done < <(pacman-conf --config "${pac_conf:-$working_dir/etc/pacman.conf}" --repo-list) + +mount_args+=("--bind=${cache_dirs[0]//:/\\:}") + +for cache_dir in "${cache_dirs[@]:1}"; do + mount_args+=("--bind-ro=${cache_dir//:/\\:}") +done + +# {{{ functions +copy_hostconf () { + unshare --fork --pid gpg --homedir "$working_dir"/etc/pacman.d/gnupg/ --no-permission-warning --quiet --batch --import --import-options import-local-sigs "$(pacman-conf GpgDir)"/pubring.gpg >/dev/null 2>&1 + pacman-key --gpgdir "$working_dir"/etc/pacman.d/gnupg/ --import-trustdb "$(pacman-conf GpgDir)" >/dev/null 2>&1 + + printf 'Server = %s\n' "${host_mirrors[@]}" >"$working_dir/etc/pacman.d/mirrorlist" + + [[ -n $pac_conf ]] && cp "$pac_conf" "$working_dir/etc/pacman.conf" + [[ -n $makepkg_conf ]] && cp "$makepkg_conf" "$working_dir/etc/makepkg.conf" + + local file + for file in "${files[@]}"; do + mkdir -p "$(dirname "$working_dir$file")" + cp -T "$file" "$working_dir$file" + done + + sed -r "s|^#?\\s*CacheDir.+|CacheDir = ${cache_dirs[*]}|g" -i "$working_dir/etc/pacman.conf" +} +# }}} + +umask 0022 + +# Sanity check +if [[ ! -f "$working_dir/.arch-chroot" ]]; then + die "'%s' does not appear to be an Arch chroot." "$working_dir" +elif [[ $(cat "$working_dir/.arch-chroot") != "$CHROOT_VERSION" ]]; then + die "chroot '%s' is not at version %s. Please rebuild." "$working_dir" "$CHROOT_VERSION" +fi + +copy_hostconf + +eval "$(grep -a '^CARCH=' "$working_dir/etc/makepkg.conf")" + +[[ -z $nosetarch ]] || unset CARCH +if [[ -f "@pkgdatadir@/setarch-aliases.d/${CARCH}" ]]; then + read -r set_arch < "@pkgdatadir@/setarch-aliases.d/${CARCH}" +else + set_arch="${CARCH}" +fi + +exec ${CARCH:+setarch "$set_arch"} systemd-nspawn -q \ + -D "$working_dir" \ + -E "PATH=/usr/local/sbin:/usr/local/bin:/usr/bin" \ + --register=no --keep-unit --as-pid2 \ + "${mount_args[@]}" \ + "$@" |