#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-2.0-only
# Runs only in the image build container; never loads modules.
set -euo pipefail
suite=$1
commit=$2
export KDIR="/usr/src/kernels/$KVER"
mkdir -p /opt/ci-build /opt/go-cache /opt/go-mod
exec > >(tee /opt/ci-build/build.log) 2>&1
test -s "$KDIR/Module.symvers"
cp "$KDIR/.config" /opt/ci-build/kernel.config
rpm -qa | sort > /opt/ci-build/packages.txt
python3 - "$suite" "$commit" "$KVER" <<'PY'
import json, pathlib, sys
pathlib.Path('/opt/ci-build/image.json').write_text(json.dumps(dict(
    suite=sys.argv[1], commit=sys.argv[2], kernel=sys.argv[3]), indent=2) + '\n')
PY
opts=("-j$(nproc)" "GIT_COMMIT=${commit:0:12}" "KDIR=$KDIR" "KVER=$KVER")
case "$suite" in
kunit)
    grep -Eq '^CONFIG_KUNIT=[ym]$' "$KDIR/.config"
    grep -qx 'CONFIG_KUNIT_DEBUGFS=y' "$KDIR/.config"
    modinfo -k "$KVER" -n kunit
    modinfo -k "$KVER" -n dlm
    python3 -m unittest discover -s scripts/kunit -p 'test_*.py'
    make kunit-list
    make "${opts[@]}" kunit-build
    # Exercise cleanup without losing the exact modules to be executed.
    tar -czf /opt/ci-build/modules.tar.gz -T .kunit-modules .kunit-modules
    make kunit-clean
    test ! -e .kunit-modules
    test ! -e .kunit-modules.tmp
    test -z "$(find scst/src iscsi-scst/kernel -type f \( -name '*.ko' -o -name '*.o' -o -name '*.cmd' \) -print -quit)"
    tar -xzf /opt/ci-build/modules.tar.gz
    ;;
ginkgo)
    modinfo -k "$KVER" -n iscsi_tcp
    modinfo -k "$KVER" -n dlm
    # Drivers consume the core's Module.symvers. Keep these builds ordered.
    make "${opts[@]}" scst
    make "${opts[@]}" scst_local
    make "${opts[@]}" usr
    make "${opts[@]}" iscsi INFINIBAND_ENABLED=false
    make "${opts[@]}" scstadm
    make ginkgo-check
    # Populate Go's build cache at the same /scst path used by the guest.
    # No package downloads or kernel compilation are needed in a test VM.
    make ginkgo-list GINKGO_LABEL=
    ;;
*) exit 2 ;;
esac
# Keep the sources, modules and Go caches, but omit intermediate kernel objects.
find /scst -type f \( -name '*.o' -o -name '*.cmd' -o -name '*.mod.c' \) -delete
# Module signing keys must never enter a VM image or CI artifact.
# The ordinary scst target generates these, even without modules_install.
rm -f /scst/scst/src/certs/scst_module_key.priv /scst/scst/src/certs/scst_module_key.der
test -z "$(find /scst -type f -name '*.priv' -print -quit)"