#!/usr/bin/sh error() { cat < [] EOF exit 1 } if [ "$1" = "--clean" ]; then CLEAN=1 shift fi [ $# = 2 -o $# = 3 ] || error if [ "$1" = "--compress" -o "$1" == "--uncompress" ]; then ACTION=$1 shift STAGE2_DIR="$1" shift LIVE_DIR="$STAGE2_DIR/live" if [ -n "$1" ]; then COMPRESSED_IMAGE=$1 shift else COMPRESSED_IMAGE="$STAGE2_DIR/mdkinst.sqfs" fi else error fi if [ $ACTION = "--compress" ]; then which mksquashfs >/dev/null 2>/dev/null || { echo "missing command mksquashfs (from squashfs-tools)"; exit 1; } [ -d "$LIVE_DIR" ] || error echo "Creating $COMPRESSED_IMAGE from $LIVE_DIR" rm -f $STAGE2_DIR/.room if ! mksquashfs $LIVE_DIR $COMPRESSED_IMAGE -all-root -noappend >/dev/null; then echo "mksquashfs failed" exit 1 fi chmod 755 $COMPRESSED_IMAGE echo foo > $STAGE2_DIR/.room if [ -s $STAGE2_DIR/.room ]; then rm -f $STAGE2_DIR/.room [ -n "$CLEAN" ] && rm -rf $LIVE_DIR else echo "not enough space" rm -f $COMPRESSED_IMAGE exit 1 fi else which unsquashfs >/dev/null 2>/dev/null || { echo "missing command unsquashfs (from squashfs-tools)"; exit 1; } [ -f "$COMPRESSED_IMAGE" ] || error echo "Creating $LIVE_DIR from $COMPRESSED_IMAGE" if [ $EUID != "0" ]; then SUDO="sudo" PATH="/sbin:/usr/sbin:$PATH" fi unsquashfs -dest $LIVE_DIR $COMPRESSED_IMAGE || { rm -rf $LIVE_DIR; exit 1; } [ -n "$CLEAN" ] && rm -f $COMPRESSED_IMAGE fi exit 0