#!/bin/sh
# Script for writing the system to a disk image file.
# This creates a file of the right size, attaches it to a loop device,
# then hands the rest of the work off to disk-install.sh

usage(){
    cat <<EOF
usage: $0 FILENAME SIZE [TARGET_DISK]

FILENAME:    Location to write the disk image to
SIZE:        Size to create the disk image with
TARGET_DISK: What the disk will appear as on the target machine
EOF
}

. @@SCRIPT_DIR@@/common.sh

if [ "$#" -lt 2 -o "$#" -gt 3 ]; then
    usage
    exit 1
fi

DISK_IMAGE="$1"
DISK_SIZE="$2"
TARGET_DISK="${3-/dev/vda}"

make_disk_image "$DISK_SIZE" "$DISK_IMAGE"

(
    LOOP="$(loop_file "$DISK_IMAGE")"
    set +e
    @@SCRIPT_DIR@@/disk-install.sh "$DISK_IMAGE" "$TARGET_DISK"
    ret="$?"
    unloop_file "$LOOP"
    exit "$ret"
)