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#!/bin/bash
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# Copyright (C) 2007, 2008, 2009 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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set -e
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. common.sh
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IMAGE_FILE="$IMAGE_DIR/image-$IMAGE_NAME-$ARCH.tar.gz"
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if [ "$CDINSTALL" = "no" ] ; then
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    # If the target device is not a real block device we'll first losetup it.
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    # This is needed for file disks.
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    if [ ! -b $blockdev ]; then
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      ORIGINAL_BLOCKDEV=$blockdev
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      blockdev=$($LOSETUP -sf $blockdev)
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      CLEANUP+=("$LOSETUP -d $blockdev")
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    fi
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    # Create 3 partitions, /boot, swap, & /
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    format_disk0 $blockdev
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    filesystem_base_dev=$(map_disk0 $blockdev)
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    root_dev="${filesystem_base_dev}-3"
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    boot_dev="${filesystem_base_dev}-1"
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    swap_dev="${filesystem_base_dev}-2"
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    CLEANUP+=("unmap_disk0 $blockdev")
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    # Format /boot
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    mke2fs -Fjq -L /boot $boot_dev
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    # Format /
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    mke2fs -Fjq -L / $root_dev
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    # Format swap
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    mkswap $swap_dev
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    TMPDIR=`mktemp -d` || exit 1
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    CLEANUP+=("rmdir $TMPDIR")
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    # mount filesystems
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    mount $root_dev $TMPDIR
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    CLEANUP+=("umount $TMPDIR")
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    $MKDIR_P $TMPDIR/boot
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    mount $boot_dev $TMPDIR/boot
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    CLEANUP+=("umount $TMPDIR/boot")
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    if [ ! -f "$IMAGE_FILE" ] ; then
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      log_error "Can't find image file: $IMAGE_FILE"
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      exit 1
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    fi
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    # unpack image
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    tar pzxf $IMAGE_FILE -C $TMPDIR
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    # Set disk based on type of hypervisor
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    if [ "$HYPERVISOR" = "kvm" ] ; then
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      disk="vda"
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    else
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      disk="xda"
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    fi
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    # make /dev/$disk
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    mknod $TMPDIR/dev/$disk b $(stat -L -c "0x%t 0x%T" $blockdev)
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    CLEANUP+=("rm -f $TMPDIR/dev/$disk")
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    # make /dev/${disk}1
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    mknod $TMPDIR/dev/${disk}1 b $(stat -L -c "0x%t 0x%T" $boot_dev)
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    CLEANUP+=("rm -f $TMPDIR/dev/${disk}1")
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    # make /dev/${disk}1
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    mknod $TMPDIR/dev/${disk}3 b $(stat -L -c "0x%t 0x%T" $root_dev)
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    CLEANUP+=("rm -f $TMPDIR/dev/${disk}3")
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    # create device.map
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cat > "$TMPDIR/boot/grub/device.map" <<EOF
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(hd0) /dev/$disk
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EOF
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    # install grub to the block device
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    chroot $TMPDIR grub --batch --no-floppy --device-map=/boot/grub/device.map <<EOF
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root (hd0,0)
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setup (hd0)
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quit
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EOF
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    RUN_PARTS=`which run-parts`
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    if [ -n "$RUN_PARTS" -a -n "$CUSTOMIZE_DIR" -a -d "$CUSTOMIZE_DIR" ]; then
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      TARGET=$TMPDIR
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      BLOCKDEV=$blockdev
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      FSYSDEV=$filesystem_dev
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      export TARGET SUITE ARCH PARTITION_STYLE EXTRA_PKGS BLOCKDEV FSYSDEV
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      $RUN_PARTS $CUSTOMIZE_DIR
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    fi
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fi
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# execute cleanups
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cleanup
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trap - EXIT
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exit 0