dragora/stages/2/03-iso

# Build script to compose the liveCD image.
#
# Copyright (c) 2017 MMPG.
# Copyright (c) 2017 Matias Fonzo, <selk@dragora.org>.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Perform sanity checks (requirements)
type mksquashfs > /dev/null  || exit 2;
type mkisofs > /dev/null     || exit 2;

# This depends on the existence of the stage 1
if test ! -d "${output}/stage1/usr/pkg"
then
    echo "The stage number 1 does not exist or is incomplete." 1>&2
    echo "Build (completely) the stage 1 before processing '$stage'." 1>&2
    exit 1;
fi
if test ! -f "${rootdir}/initrd/initrd.img"
then
    echo "${rootdir}/initrd/initrd.img: No such initramfs file" 1>&2
    exit 1;
fi

STAGE1="${output}/stage1"
CDROM="${rootdir}/cdrom"

# Re-create CD tree
rm -rf -- "$CDROM"
mkdir -p -- "${CDROM}/isolinux"

# Copy kernel installation to isolinux/
cd -- "${STAGE1}/boot"

for file in System.map config vmlinuz
do
    if test -L $file -a ! -e $file
    then
        cp -p "${STAGE1}/$(readlink -- "$file")" "${CDROM}/isolinux/$file"
    elif test -f $file
    then
        cp -p "${STAGE1}/boot/$file" "${CDROM}/isolinux/$file"
    else
        echo "No valid symlinks or regular files for copying the kernel" 1>&2
        exit 1;
    fi
done
unset file

# Copy local isolinux files and initramfs for ISOLINUX

cp -p "${worktree}"/archive/isolinux/* "${CDROM}/isolinux/"
rm -f "${CDROM}/isolinux/isohybrid.pl"

cp -p "${rootdir}/initrd/initrd.img" "${CDROM}/isolinux/"

# Produce compressed image using mksquashfs(1)
cd -- "$STAGE1"
rm -f ./dragora.sfs

mksquashfs ./* "${CDROM}/dragora.sfs" \
 -comp gzip -b 256K -Xcompression-level 9 -keep-as-directory \
 -e ./tools ./var/cache/qi/packages ./root/.ash_history \
    ./usr/pkg/kernel-buildtree-* ./usr/src/linux-* ./usr/src/qi

# Produce hybrid ISO-9660 image
cd -- "$CDROM"
rm -f ./dragora-live*

mkisofs -v -o "${CDROM}/dragora-live.iso"                 \
        -no-emul-boot -boot-load-size 4 -boot-info-table  \
        -b "isolinux/isolinux.bin"                        \
        -c "isolinux/boot.cat"                            \
        -A 'Dragora' -V 'Dragora'                         \
        .

echo "Applying \"hybrid booting\" to the ISO image ..."
"${worktree}"/archive/isolinux/isohybrid.pl "${CDROM}/dragora-live.iso"

sha256sum "${CDROM}/dragora-live.iso" > "${CDROM}/dragora-live.iso.sha256"

echo "Finish ..."
echo ""
echo "The ISO image has been produced:"
echo "${CDROM}/dragora-live.iso"
echo ""