#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-2.0-only
# Invoked only by the dedicated guest target. The host owns the hard deadline.
set -euo pipefail
mount -t 9p -o trans=virtio,version=9p2000.L,ro ci-input /ci/input
mount -t 9p -o trans=virtio,version=9p2000.L ci-reports /ci/reports
mode=$(cat /ci/input/mode)
token=$(cat /ci/input/token)
finish() {
    status=$?
    trap - EXIT
    dmesg --facility=kern > /ci/reports/dmesg.log || status=1
    python3 - "$mode" "$token" "$status" <<'PY'
import json, os, pathlib, platform, sys
report = json.loads(pathlib.Path('/opt/ci-build/image.json').read_text())
report.update(mode=sys.argv[1], token=sys.argv[2], exit_code=int(sys.argv[3]),
              running_kernel=platform.release())
path = pathlib.Path('/ci/reports/completion.tmp')
with path.open('w') as output:
    json.dump(report, output)
    output.flush()
    os.fsync(output.fileno())
path.rename('/ci/reports/completion.json')
PY
    sync
    systemctl --no-block poweroff
    exit "$status"
}
trap finish EXIT
test "$(uname -r)" = "$(python3 -c 'import json; print(json.load(open("/opt/ci-build/image.json"))["kernel"])')"
mountpoint -q /sys/kernel/debug || mount -t debugfs none /sys/kernel/debug
cd /scst
printf '%s\n' "$mode" > /ci/reports/started
export PATH=/usr/sbin:/usr/bin:/sbin:/bin
export CGO_ENABLED=0 GOTOOLCHAIN=local GOPROXY=off
export GOCACHE=/opt/go-cache GOMODCACHE=/opt/go-mod
case "$mode" in
smoke) exit 0 ;;
panic) echo c > /proc/sysrq-trigger; exit 1 ;;
hang) sleep infinity ;;
kunit)
    make kunit-run KUNIT_ARGS='--timeout 120 --output /ci/reports/kunit' \
        2>&1 | tee /ci/reports/tests.log
    ;;
ginkgo|initiator)
    # A local-only run has no initiator guest and no network.
    local_only=
    if [[ -e /ci/input/local-only ]]; then local_only=1; fi
    if [[ ! $local_only ]]; then
        while [[ ! -e /ci/input/ssh-ready ]]; do sleep 1; done
        ip link set eth0 up
        if [[ $mode == initiator ]]; then address=192.0.2.2; else address=192.0.2.1; fi
        ip address add "$address/24" dev eth0
    fi
    if [[ $mode == initiator ]]; then
        install -m 600 /ci/input/authorized_keys /root/.ssh/authorized_keys
        install -m 600 /ci/input/ssh_host_key /run/ci-host-key
        mkdir -p /run/sshd /etc/iscsi
        printf '%s\n' 'InitiatorName=iqn.2026-10.org.scst:ci' > /etc/iscsi/initiatorname.iscsi
        /usr/sbin/sshd -D -e -o HostKey=/run/ci-host-key -o UsePAM=yes \
            -o PasswordAuthentication=no -o KbdInteractiveAuthentication=no \
            -o PermitRootLogin=prohibit-password &
        modprobe iscsi_tcp
        systemctl start iscsid.service
        # Publish readiness only once SSH accepts connections and iscsid is alive.
        python3 - <<'PY'
import socket, time
for attempt in range(100):
    try:
        with socket.create_connection(('127.0.0.1', 22), timeout=1):
            break
    except OSError:
        time.sleep(.1)
else:
    raise SystemExit('sshd did not start')
PY
        pgrep -x iscsid
        touch /ci/reports/ready
        sleep infinity
    else
        if [[ ! $local_only ]]; then
            install -m 600 /ci/input/id_ed25519 /root/.ssh/id_ed25519
            install -m 600 /ci/input/known_hosts /root/.ssh/known_hosts
            while [[ ! -e /ci/input/peer-ready ]]; do sleep 1; done
        fi
        # This disk is created by the host supervisor exclusively for this run.
        test "$(lsblk -dn -o SERIAL /dev/disk/by-id/virtio-scst-ci-data)" = scst-ci-data
        python3 - "$local_only" <<'PY'
import json, pathlib, sys
config = dict(disposable_host=True,
    admin_command=['/usr/bin/perl', '-I/scst/scstadmin/scstadmin.sysfs/scst-1.0.0/lib',
                   '/scst/scstadmin/scstadmin.sysfs/scstadmin'],
    report_dir='/ci/reports/ginkgo', backing_dir='/ci/backing',
    command_timeout='90s', cleanup_timeout='5m', settle_timeout='30s', suite_timeout='75m',
    io=dict(block_device='/dev/disk/by-id/virtio-scst-ci-data', region_mb=16, timeout='5m'))
if not sys.argv[1]:
    config['iscsi'] = dict(target_address='192.0.2.1', port=3260, login_timeout='30s',
        initiator=dict(host='192.0.2.2', user='root', port=22,
            identity_file='/root/.ssh/id_ed25519', lock_file='/tmp/scst-ginkgo.lock',
            disposable_host=True))
pathlib.Path('/ci/config.json').write_text(json.dumps(config))
PY
        label=$(cat /ci/input/ginkgo-label)
        make ginkgo-test GINKGO_CONFIG=/ci/config.json GINKGO_LABEL="$label" \
            2>&1 | tee /ci/reports/tests.log
    fi
    ;;
*) echo "Unknown guest mode: $mode" >&2; exit 2 ;;
esac