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-rwxr-xr-xsrc/chroot-tools/librechroot243
1 files changed, 151 insertions, 92 deletions
diff --git a/src/chroot-tools/librechroot b/src/chroot-tools/librechroot
index 158828b..e39b105 100755
--- a/src/chroot-tools/librechroot
+++ b/src/chroot-tools/librechroot
@@ -1,113 +1,172 @@
-#!/bin/bash
-# LibreChRoot
-# Enters a chroot
+#!/bin/bash -euE
+# librechroot
# Copyright 2010 Nicolás Reynolds
# Copyright 2011 Joshua Haase
-
-# ---------- GNU General Public License 3 ----------
-
+# 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/>.
-function usage {
-
- echo ""
- echo "Usage: $0 [options] [chrootname]"
- echo "Use it as root."
- echo ""
- echo "Default chroot name: $CHROOT"
- echo "Default chrootdir: $CHROOTDIR"
- echo ""
- echo "OPTIONS:"
- echo ""
- echo " -c : clean the chroot using pacman"
- echo " only 'base', 'base-devel' and 'sudo' on chroot"
- echo " -d <chrootdir> : use <chrootdir> instead of default"
- echo " -r : clean /repo on the chroot"
- echo " -h : this message"
- echo " -u : update the chroot"
- echo ""
-
+. /etc/libretools.conf
+
+##
+# This function is almost verbatim from makechrootpkg
+##
+sync() {
+ if [[ $CHROOTCOPY = root ]]; then
+ error "Cannot sync the root copy with itself"
+ exit 1
+ fi
+
+ lock_open_read 8 "$rootdir" "Locking clean chroot"
+
+ stat_busy 'Creating clean working copy'
+ local use_rsync=false
+ if type -P btrfs >/dev/null; then
+ [[ -d $copydir ]] && btrfs subvolume delete "$copydir" &>/dev/null
+ btrfs subvolume snapshot "$chrootdir/root" "$copydir" &>/dev/null || use_rsync=true
+ else
+ use_rsync=true
+ fi
+
+ if $use_rsync; then
+ mkdir -p "$copydir"
+ rsync -a --delete -q -W -x "$CHROOTDIR/$CHROOT/root/" "$copydir"
+ fi
+ stat_done
+
+ lock_close 8
}
-function clean_chroot { # Clean packages with pacman
- cp -a "$(dirname $0)/chcleanup" "${CHROOTDIR}/${CHROOTNAME}/clean"
-
- libremessages="$(grep "libremessages" /etc/libretools.conf | cut -d" " -f2)"
-
- cat /etc/libretools.conf ${libremessages} | sed "/libremessages/d" > "${CHROOTDIR}/${CHROOTNAME}/etc/libretools.conf"
-
-
- mkarchroot -r "sh -c 'cd /build; /clean'" "${CHROOTDIR}/${CHROOTNAME}"
+usage() {
+ echo "Usage: $cmd [OPTIONS] [CHROOT] "
+ echo 'Interacts with a chroot.'
+ echo ''
+ echo "The default CHROOT is \`${CHROOT}'."
+ echo ''
+ echo 'Options:'
+ echo ' Settings:'
+ echo ' -l <COPY> Use this as the chroot copy instead of basing it'
+ echo ' on the username'
+ 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 ' -n No-op, just make sure that the chroot exists'
+ echo ' -r <CMD> Run CMD in the chroot'
+ echo " -s Sync the copy with the 'root' copy"
+ echo ' -u Update the chroot'
+ echo ' -h Print this message'
}
-function clean_repo {
- msg "Cleaning repo for chroot: ${CHROOTDIR}/${CHROOTNAME}"
- if [ -d "${CHROOTDIR}/${CHROOTNAME}/repo" ]; then
- find "${CHROOTDIR}/${CHROOTNAME}/repo/" -mindepth 1 -delete
- else
- mkdir -p "${CHROOTDIR}/${CHROOTNAME}/repo"
- fi
- bsdtar -czf "${CHROOTDIR}/${CHROOTNAME}/repo/repo.db.tar.gz" -T /dev/null
- ln -s "repo.db.tar.gz" "${CHROOTDIR}/${CHROOTNAME}/repo/repo.db"
+main() {
+ CHROOTCOPY=$LIBREUSER
+ [[ $CHROOTCOPY != root ]] || CHROOTCOPY=copy
+
+ local mode=enter
+ local archroot_args=()
+ local ARG=''
+ while getopts 'l:NCcI:i:nrsuh' arg; do
+ case $arg in
+ l) CHROOTCOPY=$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;;
+ n) 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))
+ case $# in
+ 0) :;;
+ 1) CHROOT="$1";;
+ *) usage; exit 1;;
+ esac
+
+ # not local
+ rootdir="${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 "$copydir" "Locking chroot copy '$copy'"
+
+ if [[ ! -d $rootdir ]]; then
+ libremkchroot "$CHROOT"
+ fi
+
+ if [[ ! -d $copydir ]] && [[ $mode != sync ]]; then
+ sync
+ fi
+
+ case "$mode" in
+ clean_repo)
+ msg "Cleaning local pacman repository"
+ rm -rf "${copydir}/repo"
+ mkdir "${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)
+ msg "Intelligently cleaning packages"
+ cp -a "$(dirname $0)/chcleanup" "${copydir}/clean"
+ mkdir -p "$copydir/build"
+ archroot "${archroot_args[@]}" "${copydir}" -r "cd /build; /clean"
+ ;;
+ install_file)
+ msg "Installing package file: $ARG"
+ cp "$ARG" "$copydir/${ARG##*/}"
+ archroot "${archroot_args[@]}" "$copydir" -r "pacman -U /${ARG##*/} --noconfirm"
+ rm "$copydir/${ARG##*/}"
+ ;;
+ install_pkg)
+ msg "Installing package(s): $ARG"
+ archroot "${archroot_args[@]}" "$copydir" -i $ARG
+ ;;
+ noop) :;;
+ run)
+ msg "Running command"
+ archroot "${archroot_args[@]}" "${copydir}" -r "$ARG"
+ ;;
+ sync) sync;;
+ update)
+ msg "Updating chroot"
+ archroot "${archroot_args[@]}" "${copydir}" -u
+ ;;
+ enter)
+ msg "Entering chroot"
+ archroot "${archroot_args[@]}" "${copydir}" -r bash
+ ;;
+ esac
}
-source /etc/libretools.conf
-
-if [ -e "$XDG_CONFIG_HOME/libretools/libretools.conf" ]; then
- source "$XDG_CONFIG_HOME/libretools/libretools.conf"
-fi
-
-CLEANCHROOT='false'
-UPDATE='false'
-CLEANREPO='false'
-CHROOTNAME="${CHROOT:-${SUDO_USER:-root}}"
-
-while getopts 'hrcud:' arg; do
- case $arg in
- h) usage; exit 0 ;;
- c) CLEANCHROOT='true' ;;
- u) UPDATE='true' ;;
- r) CLEANREPO='true' ;;
- d) CHROOTDIR="$(readlink -e $OPTARG)" ;;
- esac
-done
-
-[[ "$UID" != "0" ]] && {
- error "This script must be run as root."
- exit 1
-}
-
-shift $(($OPTIND - 1))
-
-if [ $# -eq 1 ]; then
- CHROOTNAME="$1"
-fi
-
-if "$CLEANREPO"; then
- clean_repo
-fi
-
-if "$CLEANCHROOT"; then
- clean_chroot
-elif "$UPDATE"; then
- msg "Updating chroot: ${CHROOTDIR}/${CHROOTNAME}"
- mkarchroot -u "${CHROOTDIR}/${CHROOTNAME}"
-else
- msg "Entering chroot: ${CHROOTDIR}/${CHROOTNAME}"
- mkarchroot -r "bash" "${CHROOTDIR}/${CHROOTNAME}"
-fi
-exit 0
+main "$@"
generated by cgit v1.2.2 (git 2.25.0) at 2024-04-26 20:50:27 +0000