test: introduce TEST-37-EXECRELOAD

A simple test case for #13098

test/TEST-37-EXECRELOAD/Makefile

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+../TEST-01-BASIC/Makefile

test/TEST-37-EXECRELOAD/test.sh

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+#!/bin/bash
+set -e
+TEST_DESCRIPTION="Test ExecReload= (PR #13098)"
+
+. $TEST_BASE_DIR/test-functions
+
+test_setup() {
+    create_empty_image_rootdir
+
+    # Create what will eventually be our root filesystem onto an overlay
+    (
+        LOG_LEVEL=5
+        eval $(udevadm info --export --query=env --name=${LOOPDEV}p2)
+
+        setup_basic_environment
+        dracut_install mktemp
+
+        # mask some services that we do not want to run in these tests
+        ln -fs /dev/null $initdir/etc/systemd/system/systemd-hwdb-update.service
+        ln -fs /dev/null $initdir/etc/systemd/system/systemd-journal-catalog-update.service
+        ln -fs /dev/null $initdir/etc/systemd/system/systemd-networkd.service
+        ln -fs /dev/null $initdir/etc/systemd/system/systemd-networkd.socket
+        ln -fs /dev/null $initdir/etc/systemd/system/systemd-resolved.service
+        ln -fs /dev/null $initdir/etc/systemd/system/systemd-machined.service
+
+        # setup the testsuite service
+        cat >$initdir/etc/systemd/system/testsuite.service <<EOF
+[Unit]
+Description=Testsuite service
+
+[Service]
+ExecStart=/bin/bash -x /testsuite.sh
+Type=oneshot
+StandardOutput=tty
+StandardError=tty
+NotifyAccess=all
+EOF
+        cp testsuite.sh $initdir/
+
+        setup_testsuite
+    )
+    setup_nspawn_root
+}
+
+do_test "$@"

test/TEST-37-EXECRELOAD/testsuite.sh

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+#!/bin/bash
+
+set -ex
+set -o pipefail
+
+systemd-analyze log-level debug
+systemd-analyze log-target console
+
+export SYSTEMD_PAGER=
+SERVICE_PATH="$(mktemp /etc/systemd/system/execreloadXXX.service)"
+SERVICE_NAME="${SERVICE_PATH##*/}"
+
+echo "[#1] Failing ExecReload= should not kill the service"
+cat > "$SERVICE_PATH" << EOF
+[Service]
+ExecStart=/bin/sleep infinity
+ExecReload=/bin/false
+EOF
+
+systemctl daemon-reload
+systemctl start $SERVICE_NAME
+systemctl status $SERVICE_NAME
+# The reload SHOULD fail but SHOULD NOT affect the service state
+! systemctl reload $SERVICE_NAME
+systemctl status $SERVICE_NAME
+systemctl stop $SERVICE_NAME
+
+
+echo "[#2] Failing ExecReload= should not kill the service (multiple ExecReload=)"
+cat > "$SERVICE_PATH" << EOF
+[Service]
+ExecStart=/bin/sleep infinity
+ExecReload=/bin/true
+ExecReload=/bin/false
+ExecReload=/bin/true
+EOF
+
+systemctl daemon-reload
+systemctl start $SERVICE_NAME
+systemctl status $SERVICE_NAME
+# The reload SHOULD fail but SHOULD NOT affect the service state
+! systemctl reload $SERVICE_NAME
+systemctl status $SERVICE_NAME
+systemctl stop $SERVICE_NAME
+
+echo "[#3] Failing ExecReload=- should not affect reload's exit code"
+cat > "$SERVICE_PATH" << EOF
+[Service]
+ExecStart=/bin/sleep infinity
+ExecReload=-/bin/false
+EOF
+
+systemctl daemon-reload
+systemctl start $SERVICE_NAME
+systemctl status $SERVICE_NAME
+systemctl reload $SERVICE_NAME
+systemctl status $SERVICE_NAME
+systemctl stop $SERVICE_NAME
+
+systemd-analyze log-level info
+
+echo OK > /testok
+
+exit 0