services: Fix handling of user defined service controls.

programs/services/rpc.c

@@ -941,6 +941,9 @@ static BOOL service_accepts_control(const struct service_entry *service, DWORD d
 {
     DWORD a = service->status.dwControlsAccepted;
 
+    if (dwControl >= 128 && dwControl <= 255)
+        return TRUE;
+
     switch (dwControl)
     {
     case SERVICE_CONTROL_INTERROGATE:

programs/services/tests/service.c

@@ -83,6 +83,9 @@ static DWORD WINAPI service_handler(DWORD ctrl, DWORD event_type, void *event_da
         SetServiceStatus(service_handle, &status);
         SetEvent(service_stop_event);
         return NO_ERROR;
+    case 128:
+        service_event("CUSTOM");
+        return 0xdeadbeef;
     default:
         status.dwCurrentState = SERVICE_RUNNING;
         SetServiceStatus( service_handle, &status );
@@ -346,6 +349,10 @@ static void test_service(void)
     ok(status.dwCheckPoint == 0, "status.dwCheckPoint = %d\n", status.dwCheckPoint);
     todo_wine ok(status.dwWaitHint == 0, "status.dwWaitHint = %d\n", status.dwWaitHint);
 
+    res = ControlService(service_handle, 128, &status);
+    ok(res, "ControlService failed: %u\n", GetLastError());
+    expect_event("CUSTOM");
+
     res = ControlService(service_handle, SERVICE_CONTROL_STOP, &status);
     ok(res, "ControlService failed: %u\n", GetLastError());
     expect_event("STOP");