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Diffstat (limited to 'src/chroot-tools/librechroot')
-rwxr-xr-x | src/chroot-tools/librechroot | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/chroot-tools/librechroot b/src/chroot-tools/librechroot new file mode 100755 index 0000000..7f113f5 --- /dev/null +++ b/src/chroot-tools/librechroot @@ -0,0 +1,164 @@ +#!/bin/bash -euE +# librechroot + +# Copyright 2010 Nicolás Reynolds +# Copyright 2011 Joshua Haase +# Copyright 2012 Luke Shumaker +# +# This file is part of Parabola. +# +# Parabola is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# Parabola 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 Parabola. If not, see <http://www.gnu.org/licenses/>. + +. /usr/share/libretools/conf.sh +load_conf_libretools_chroot + +. "$(which libremessages)" +. /usr/share/devtools/makechrootpkg.sh + +cleanup=(':'); +cleanup() { + for cmd in "${cleanup[@]}"; do + $cmd + done +} + +cmd=${0##*/} +usage() { + echo "Usage: $cmd [OPTIONS] " + echo 'Interacts with a chroot.' + echo '' + echo 'This command will make the following configuration changes in' + echo 'the chroot:' + echo " - overwrite \`/etc/libretools.d/chroot.conf'" + echo " - overwrite \`/etc/pacman.d/mirrorlist'" + echo " - set \`CacheDir' in \`/etc/pacman.conf'" + echo '' + echo 'Options:' + echo ' Settings:' + echo " -n <CHROOT> Use this chroot instead of \`$CHROOT'" + echo " -l <COPY> Use this chroot copy instead \`$CHROOTCOPY'" + echo ' -N Disable networking in the chroot' + echo '' + echo ' Modes: (the last mode given will be used)' + echo ' -C Clean /repo in the chroot' + echo ' -c Clean the packages installed in the chroot' + echo ' -I <FILE> Install the package FILE into the chroot' + echo ' -i <PKG> Install the package PKG from repos into the chroot' + echo ' -m Make sure the chroot exists; do nothing else' + echo ' -r <CMD> Run CMD in the chroot' + echo " -s Sync the copy with the \`root' copy" + echo ' -u Update the chroot' + echo ' -h Show this message' +} + +main() { + CHROOTCOPY=$LIBREUSER + [[ $CHROOTCOPY != root ]] || CHROOTCOPY=copy + + local mode=enter + local archroot_args=(-f) + local ARG='' + while getopts 'n:l:NCcI:i:mr:suh' arg; do + case $arg in + n) CHROOT=$OPTARG;; + l) CHROOTCOPY=$OPTARG;; + N) archroot_args+=(-N);; + + C) mode=clean_repo;; + c) mode=clean_pacman;; + I) mode=install_file; ARG=$OPTARG;; + i) mode=install_pkg; ARG=$OPTARG;; + m) mode=noop;; + r) mode=run; ARG=$OPTARG;; + s) mode=sync;; + u) mode=update;; + + h) usage; exit 0;; + *) usage; exit 1;; + esac + done + shift $(($OPTIND - 1)) + if [[ $# > 0 ]]; then + usage + exit 1 + fi + + # not local + rootdir="${CHROOTDIR}/${CHROOT}/root" + copydir="${CHROOTDIR}/${CHROOT}/${CHROOTCOPY}" + + ######################################################################## + + if (( EUID )); then + error "This script must be run as root." + exit 1 + fi + + # Keep this lock as long as we are running + # Note that '9' is the same FD number as in (mk)archroot + lock_open_write 9 "$copydir" \ + "Waiting for existing lock on \`$copydir' to be released" + + if [[ ! -d $rootdir ]]; then + libremkchroot "$CHROOT" + fi + + if [[ ! -d $copydir ]] && [[ $mode != sync ]]; then + chroot_sync + fi + + mkdir -p $copydir/etc/libretools.d + { + if [[ -n ${CHROOTEXTRAPKG[@]:-} ]]; then + printf 'CHROOTEXTRAPKG=(' + printf "'%s' " "${CHROOTEXTRAPKG[@]}" + printf ')\n' + else + printf 'CHROOTEXTRAPKG=()\n' + fi + } > $copydir/etc/libretools.d/chroot.conf + + ######################################################################## + + trap cleanup EXIT + case "$mode" in + clean_repo) + rm -rf "${copydir}/repo/*" + bsdtar -czf "${copydir}/repo/repo.db.tar.gz" -T /dev/null + ln -s "repo.db.tar.gz" "${copydir}/repo/repo.db" + ;; + clean_pacman) + cleanup+=("rm -f $copydir/clean $copydir/chrootexec") + cp -a "$(which chcleanup)" "${copydir}/clean" + echo '#!/bin/bash' > "${copydir}/chrootexec" + echo 'mkdir /build' >> "${copydir}/chrootexec" + echo 'cd /build; /clean' >> "${copydir}/chrootexec" + chmod 755 "${copydir}/chrootexec" + archroot "${archroot_args[@]}" "${copydir}" -r /chrootexec + ;; + install_file) + cleanup+=("rm $copydir/${ARG##*/}") + cp "$ARG" "$copydir/${ARG##*/}" + archroot "${archroot_args[@]}" "${copydir}" -r "pacman -U /${ARG##*/} --noconfirm" + ;; + install_pkg) archroot "${archroot_args[@]}" "${copydir}" -i $ARG ;; + noop) :;; + run) archroot "${archroot_args[@]}" "${copydir}" -r "$ARG" ;; + sync) chroot_sync;; + update) archroot "${archroot_args[@]}" "${copydir}" -u ;; + enter) archroot "${archroot_args[@]}" "${copydir}" -r bash ;; + esac +} + +main "$@" |