1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include <dlfcn.h>
20#include <libgen.h>
21#include <limits.h>
22#include <stdio.h>
23#include <stdint.h>
24
25#include <string>
26
27extern "C" int main_global_default_serial() {
28  return 3370318;
29}
30
31extern "C" int main_global_protected_serial() {
32  return 2716057;
33}
34
35// The following functions are defined in DT_NEEDED
36// libdl_preempt_test.so library.
37
38// This one calls main_global_default_serial
39extern "C" int main_global_default_get_serial();
40
41// This one calls main_global_protected_serial
42extern "C" int main_global_protected_get_serial();
43
44// This one calls lib_global_default_serial
45extern "C" int lib_global_default_get_serial();
46
47// This one calls lib_global_protected_serial
48extern "C" int lib_global_protected_get_serial();
49
50// This test verifies that the global default function
51// main_global_default_serial() is preempted by
52// the function defined above.
53TEST(dl, main_preempts_global_default) {
54  ASSERT_EQ(3370318, main_global_default_get_serial());
55}
56
57// This one makes sure that the global protected
58// symbols do not get preempted
59TEST(dl, main_does_not_preempt_global_protected) {
60  ASSERT_EQ(3370318, main_global_protected_get_serial());
61}
62
63// check same things for lib
64TEST(dl, lib_preempts_global_default) {
65  ASSERT_EQ(3370318, lib_global_default_get_serial());
66}
67
68TEST(dl, lib_does_not_preempt_global_protected) {
69  ASSERT_EQ(3370318, lib_global_protected_get_serial());
70}
71
72// TODO: Add tests for LD_PRELOADs
73