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#!/bin/sh
# Copyright © 2005-2007 Roger Leigh <rleigh@debian.org>
#
# schroot 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.
#
# schroot 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 this program. If not, see
# <http://www.gnu.org/licenses/>.
#
#####################################################################
set -e
. "$SETUP_DATA_DIR/common-data"
. "$SETUP_DATA_DIR/common-functions"
if [ -f "$CHROOT_SCRIPT_CONFIG" ]; then
. "$CHROOT_SCRIPT_CONFIG"
elif [ "$STATUS" = "ok" ]; then
fatal "script-config file '$CHROOT_SCRIPT_CONFIG' does not exist"
fi
# Check file type
check_filetype()
{
if echo "$CHROOT_FILE" | grep -q '\.tar$'; then
filetype="tar"
elif echo "$CHROOT_FILE" | egrep -q '(\.tar\.gz|\.tgz)$'; then
filetype="tgz"
elif echo "$CHROOT_FILE" | egrep -q '(\.tar\.bz2|\.tbz)$'; then
filetype="tbz"
else
fatal "Unsupported filetype for $CHROOT_FILE"
fi
}
# Unpack archive
unpack_file()
{
if [ ! -f "$CHROOT_FILE" ]; then
fatal "File '$CHROOT_FILE' does not exist"
fi
if [ "$filetype" = "tar" ]; then
tar $TAR_VERBOSE -xf "$CHROOT_FILE"
elif [ "$filetype" = "tgz" ]; then
tar $TAR_VERBOSE -xzf "$CHROOT_FILE"
elif [ "$filetype" = "tbz" ]; then
tar $TAR_VERBOSE -xjf "$CHROOT_FILE"
else
fatal "Unsupported filetype for $CHROOT_FILE"
fi
}
# Repack archive
repack_file()
{
NEWFILE=$(mktemp "${CHROOT_FILE}.XXXXXX")
trap "if [ -f \"$NEWFILE\" ]; then rm -f \"$NEWFILE\"; fi" 0
if [ "$filetype" = "tar" ]; then
tar $TAR_VERBOSE -cf "$NEWFILE" .
elif [ "$filetype" = "tgz" ]; then
tar $TAR_VERBOSE -czf "$NEWFILE" .
elif [ "$filetype" = "tbz" ]; then
tar $TAR_VERBOSE -cjf "$NEWFILE" .
else
fatal "Unsupported filetype for $CHROOT_FILE"
fi
if [ -f "$CHROOT_FILE" ]; then
info "Setting ownership and permissions from old archive"
chown --reference="$CHROOT_FILE" "$NEWFILE"
chmod --reference="$CHROOT_FILE" "$NEWFILE"
else
warn "Old archive no longer exists"
warn "Setting ownership and permissions to root:root 0600"
chown root:root "$NEWFILE"
chmod 0600 "$NEWFILE"
fi
mv "$NEWFILE" "$CHROOT_FILE"
trap "" 0
}
if [ "$VERBOSE" = "verbose" ]; then
TAR_VERBOSE="-v"
fi
if [ "$CHROOT_TYPE" = "file" ]; then
check_filetype
UNPACK_LOCATION="${CHROOT_FILE_UNPACK_DIR}/${SESSION_ID}"
if [ $STAGE = "setup-start" ]; then
info "File unpack directory: $UNPACK_LOCATION"
if [ ! -d "$UNPACK_LOCATION" ]; then
mkdir -p "$UNPACK_LOCATION"
info "Created file unpack directory: $UNPACK_LOCATION"
fi
cd "$UNPACK_LOCATION"
info "Changed CWD to $UNPACK_LOCATION"
unpack_file
elif [ "$STAGE" = "setup-stop" ]; then
if [ "$STATUS" = "ok" ] && [ "$CHROOT_FILE_REPACK" = "true" ]; then
if [ -d "$UNPACK_LOCATION" ]; then
info "Repacking chroot archive file $CHROOT_FILE from $UNPACK_LOCATION"
cd "$UNPACK_LOCATION" && repack_file
else
warn "Not repacking chroot archive file: $UNPACK_LOCATION does not exist (it may have been removed previously)"
fi
fi
if [ "$CHROOT_SESSION_PURGE" = "true" ]; then
info "Purging $UNPACK_LOCATION"
if [ -d "$UNPACK_LOCATION" ]; then
rm -rf "$UNPACK_LOCATION"
fi
fi
fi
fi
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