windows/svc/mgr: add Service.RecoveryActionsOnNonCrashFailures

Fixes golang/go#59016

Change-Id: I5e16f61ea2fc384052565342c6517687562260a1
GitHub-Last-Rev: 3626b01
GitHub-Pull-Request: #157
Reviewed-on: https://go-review.googlesource.com/c/sys/+/484896
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

windows/service.go

@@ -218,6 +218,10 @@ type SERVICE_FAILURE_ACTIONS struct {
 	Actions      *SC_ACTION
 }
 
+type SERVICE_FAILURE_ACTIONS_FLAG struct {
+	FailureActionsOnNonCrashFailures int32
+}
+
 type SC_ACTION struct {
 	Type  uint32
 	Delay uint32

windows/svc/mgr/mgr_test.go

@@ -209,6 +209,57 @@ func testRecoveryCommand(t *testing.T, s *mgr.Service, should string) {
 	}
 }
 
+func testRecoveryActionsOnNonCrashFailures(t *testing.T, s *mgr.Service, should bool) {
+	err := s.SetRecoveryActionsOnNonCrashFailures(should)
+	if err != nil {
+		t.Fatalf("SetRecoveryActionsOnNonCrashFailures failed: %v", err)
+	}
+	is, err := s.RecoveryActionsOnNonCrashFailures()
+	if err != nil {
+		t.Fatalf("RecoveryActionsOnNonCrashFailures failed: %v", err)
+	}
+	if should != is {
+		t.Errorf("RecoveryActionsOnNonCrashFailures mismatch: flag is %v, but should have %v", is, should)
+	}
+}
+
+func testMultipleRecoverySettings(t *testing.T, s *mgr.Service, rebootMsgShould, recoveryCmdShould string, actionsFlagShould bool) {
+	err := s.SetRebootMessage(rebootMsgShould)
+	if err != nil {
+		t.Fatalf("SetRebootMessage failed: %v", err)
+	}
+	err = s.SetRecoveryActionsOnNonCrashFailures(actionsFlagShould)
+	if err != nil {
+		t.Fatalf("SetRecoveryActionsOnNonCrashFailures failed: %v", err)
+	}
+	err = s.SetRecoveryCommand(recoveryCmdShould)
+	if err != nil {
+		t.Fatalf("SetRecoveryCommand failed: %v", err)
+	}
+
+	rebootMsgIs, err := s.RebootMessage()
+	if err != nil {
+		t.Fatalf("RebootMessage failed: %v", err)
+	}
+	if rebootMsgShould != rebootMsgIs {
+		t.Errorf("reboot message mismatch: message is %q, but should have %q", rebootMsgIs, rebootMsgShould)
+	}
+	recoveryCommandIs, err := s.RecoveryCommand()
+	if err != nil {
+		t.Fatalf("RecoveryCommand failed: %v", err)
+	}
+	if recoveryCmdShould != recoveryCommandIs {
+		t.Errorf("recovery command mismatch: command is %q, but should have %q", recoveryCommandIs, recoveryCmdShould)
+	}
+	actionsFlagIs, err := s.RecoveryActionsOnNonCrashFailures()
+	if err != nil {
+		t.Fatalf("RecoveryActionsOnNonCrashFailures failed: %v", err)
+	}
+	if actionsFlagShould != actionsFlagIs {
+		t.Errorf("RecoveryActionsOnNonCrashFailures mismatch: flag is %v, but should have %v", actionsFlagIs, actionsFlagShould)
+	}
+}
+
 func testControl(t *testing.T, s *mgr.Service, c svc.Cmd, expectedErr error, expectedStatus svc.Status) {
 	status, err := s.Control(c)
 	if err != expectedErr {
@@ -305,6 +356,9 @@ func TestMyService(t *testing.T) {
 	testRebootMessage(t, s, "") // delete reboot message
 	testRecoveryCommand(t, s, fmt.Sprintf("sc query %s", name))
 	testRecoveryCommand(t, s, "") // delete recovery command
+	testRecoveryActionsOnNonCrashFailures(t, s, true)
+	testRecoveryActionsOnNonCrashFailures(t, s, false)
+	testMultipleRecoverySettings(t, s, fmt.Sprintf("%s failed", name), fmt.Sprintf("sc query %s", name), true)
 
 	expectedStatus := svc.Status{
 		State: svc.Stopped,

windows/svc/mgr/recovery.go

@@ -140,3 +140,30 @@ func (s *Service) RecoveryCommand() (string, error) {
 	p := (*windows.SERVICE_FAILURE_ACTIONS)(unsafe.Pointer(&b[0]))
 	return windows.UTF16PtrToString(p.Command), nil
 }
+
+// SetRecoveryActionsOnNonCrashFailures sets the failure actions flag. If the
+// flag is set to false, recovery actions will only be performed if the service
+// terminates without reporting a status of SERVICE_STOPPED. If the flag is set
+// to true, recovery actions are also perfomed if the service stops with a
+// nonzero exit code.
+func (s *Service) SetRecoveryActionsOnNonCrashFailures(flag bool) error {
+	var setting windows.SERVICE_FAILURE_ACTIONS_FLAG
+	if flag {
+		setting.FailureActionsOnNonCrashFailures = 1
+	}
+	return windows.ChangeServiceConfig2(s.Handle, windows.SERVICE_CONFIG_FAILURE_ACTIONS_FLAG, (*byte)(unsafe.Pointer(&setting)))
+}
+
+// RecoveryActionsOnNonCrashFailures returns the current value of the failure
+// actions flag. If the flag is set to false, recovery actions will only be
+// performed if the service terminates without reporting a status of
+// SERVICE_STOPPED. If the flag is set to true, recovery actions are also
+// perfomed if the service stops with a nonzero exit code.
+func (s *Service) RecoveryActionsOnNonCrashFailures() (bool, error) {
+	b, err := s.queryServiceConfig2(windows.SERVICE_CONFIG_FAILURE_ACTIONS_FLAG)
+	if err != nil {
+		return false, err
+	}
+	p := (*windows.SERVICE_FAILURE_ACTIONS_FLAG)(unsafe.Pointer(&b[0]))
+	return p.FailureActionsOnNonCrashFailures != 0, nil
+}