build-livecd-root

#!/bin/bash
#
# Builds in /var/tmp by default, you can override this with FDI_BUILD_DIR.
# 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

. $0.conf.sh

function cleanup() {
	if [ -n "$KEEP_TMPDIR" ]; then
		echo "Not removing tmpdir $tmpdir"
	else
		echo "* Cleaning up tmp dir"
		[ -d $tmpdir ] && rm -rf $tmpdir
	fi
}
trap cleanup EXIT

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

which livemedia-creator ksflatten wget >/dev/null || ( echo "Command(s) missing, install required tools" && exit 2 )

echo "* Doing cleanup"
rm -rf fdi-image/tftpboot result/*

srcdir=$(readlink -f $(dirname $0))
destdir=${2:-$srcdir}
kernelcmd=${3:-nomodeset nokaslr}
buildytype=${4:-virt}
tmpdir=$(mktemp -d ${FDI_BUILD_DIR:-/var/tmp}/fdi-XXXXXXXXX)

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

if [[ "$buildytype" = virt ]]; then
	echo "* Using virt mode, make sure virtualization is enabled"
	BUILD_OPTS="--iso install.iso"
	if [ ! -e install.iso ]; then
		echo "* Downloading netboot installation ISO"
		wget -O install.iso https://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/images/boot.iso
	fi
else
	echo "* Using non-virt mode, make sure the host system is CentOS 9 Stream"
	echo "  (This mode can destroy the host system, only use dedicated VMs!)"
	BUILD_OPTS="--no-virt"
fi

echo "* Building ISO (kernel cmdline: $kernelcmd)"
# https://bugzilla.redhat.com/show_bug.cgi?id=1955836 - dmsquash-live-ntfs
# https://bugzilla.redhat.com/show_bug.cgi?id=2034601 - product CentOS Linux workaround
livemedia-creator $BUILD_OPTS --ks fdi-image.ks \
	--make-iso \
	--nomacboot \
	--extra-boot-args "$kernelcmd" \
	--project "FDI" \
	--releasever "$last_tag/$last_sha" \
	--anaconda-arg="--product CentOS Linux" \
	--dracut-arg="--xz" \
	--dracut-arg="--no-hostonly" \
	--dracut-arg="--debug" \
	--dracut-arg="--no-early-microcode" \
	--dracut-arg="--omit plymouth" \
	--dracut-arg="--add livenet dmsquash-live convertfs pollcdrom qemu qemu-net" \
	--dracut-arg="--add-drivers mptbase mptscsih mptspi hv_storvsc hid_hyperv hv_netvsc hv_vmbus" \
	--tmp "$tmpdir"

if [ $? -ne 0 ]; then
	echo "Error creating livecd, use KEEP_TMPDIR to investigate"
	tail -n 2000 *log
	exit 1
fi

# Move manually, --resultdir lorax option does not work correctly on CentOS8
mkdir -p "$destdir"
echo "* Moving the ISO to the destination directory"
DEST_ISO="$destdir/fdi-$last_tag-$last_sha.iso"
mv -f $tmpdir/lmc-*/images/boot.iso "$DEST_ISO"
chown --reference $srcdir/build-kickstart "$DEST_ISO"

echo "* Converting to initrd"
echo $DEST_ISO

aux/livecd-iso-to-pxeboot "$DEST_ISO"
rm -rf tftpboot/pxelinux.{cfg,0}
mv tftpboot/initrd.img tftpboot/initrd0.img
mv tftpboot/vmlinuz tftpboot/vmlinuz0
chmod 644 tftpboot/*
chown -R --reference $srcdir/build-kickstart "tftpboot"
mv tftpboot fdi-image

if [ $? -ne 0 ]; then
	echo "Error building PXE files, use KEEP_TMPDIR to investigate"
	exit 1
fi

echo "* Calculating SHA sums"
pushd fdi-image
cat > README <<EOF
Foreman Discovery Image $last_tag ($last_sha)
To verify the kernel and initrd, run
	sha512sum -c SHA512SUM
EOF
sha512sum tftpboot/initrd0.img tftpboot/vmlinuz0 > SHA512SUM
popd

echo "* Moving to the destination folder"
DEST_TAR="$destdir/fdi-image-$last_tag-$last_sha.tar"
tar cf $DEST_TAR fdi-image/
chown --reference $srcdir/build-kickstart $DEST_TAR

echo ""
echo "##########################"
echo "##########################"
echo "Done"
echo "ISO: $DEST_ISO"
echo "##########################"
echo "##########################"
echo "##########################"

exit 0