build-livecd-root

#!/bin/bash -x

# the portion of building a livecd that needs to be run as root
# run this after running build-livecd
#
# The temp dir in which things happen is by default deleted when this
# script ends, unless an error happens or the KEEP_TMPDIR variable is set

function cleanup() {
    if [ -n "$KEEP_TMPDIR" ]; then
        echo "Not removing tmpdir $tmpdir"
    else
        [ -d $tmpdir ] && rm -rf $tmpdir
    fi
}

if [ $(id -u) != 0 ]; then
  echo "Please run this script as root"
  exit 1
fi

which livecd-creator isohybrid livecd-iso-to-pxeboot >/dev/null || ( echo "Command(s) missing, install required tools" && exit 2 )

trap cleanup EXIT

resultdir=$PWD
srcdir=$(readlink -f $(dirname $0))
tmpdir=$(mktemp -d /tmp/build-fdi-XXXXXX)

cd $srcdir
last_tag=${1:-$(git describe --abbrev=0 --tags)}
last_sha=$(git log --pretty=format:'%h' -n 1)

cd $tmpdir
echo Working in directory $tmpdir

echo "* Running livecd-creator"
livecd-creator -v --title="Discovery Image" --compression-type=xz --cache /var/cache/build-fdi --config $srcdir/fdi-image.ks -f fdi -t /tmp

if [ $? -ne 0 ]; then
    KEEP_TMPDIR=yes
    echo "Error creating livecd"
    exit 1
fi

echo "* Filtering ISO with isohybrid"
cp fdi.iso fdi-bootable.iso
isohybrid --partok --uefi fdi-bootable.iso
mv fdi-bootable.iso $srcdir/fdi-bootable-${last_tag#release-}.iso

echo "* Converting to initrd"
livecd-iso-to-pxeboot $tmpdir/fdi.iso

if [ $? -ne 0 ]; then
    KEEP_TMPDIR=yes
    echo "Error converting to initrd"
    exit 1
fi

echo "* Building tarball"
mkdir fdi-image
mv tftpboot/initrd0.img tftpboot/vmlinuz0 fdi-image || KEEP_TMPDIR=yes
cd fdi-image
cat > README <<EOF
This is Foreman discovery image

To get instructions how to use the image head over to

https://github.com/theforeman/foreman_discovery

Image was built from $last_tag ($last_sha)

To verify the kernel and initrd in this tar, run

  sha256sum -c SHA256SUM
EOF

sha256sum initrd0.img vmlinuz0 > SHA256SUM

cd ..
tarball=$srcdir/fdi-image-${last_tag#release-}.tar
tar cf $tarball fdi-image/
ls -lh $tarball
chown --reference $srcdir/build-livecd $tarball

echo "* Done"
echo "The image was built:"
du -h $tarball
exit 0