1 /*
2 * Copyright (C) 2023 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 <dlfcn.h>
18 #include <stdlib.h>
19
20 #include <gtest/gtest.h>
21
22 #include <android-base/silent_death_test.h>
23 #include <android-base/test_utils.h>
24
25 using HwasanDeathTest = SilentDeathTest;
26
TEST_F(HwasanDeathTest,UseAfterFree)27 TEST_F(HwasanDeathTest, UseAfterFree) {
28 EXPECT_DEATH(
29 {
30 void* m = malloc(1);
31 volatile char* x = const_cast<volatile char*>(reinterpret_cast<char*>(m));
32 *x = 1;
33 free(m);
34 *x = 2;
35 },
36 "use-after-free");
37 }
38
TEST_F(HwasanDeathTest,OutOfBounds)39 TEST_F(HwasanDeathTest, OutOfBounds) {
40 EXPECT_DEATH(
41 {
42 void* m = malloc(1);
43 volatile char* x = const_cast<volatile char*>(reinterpret_cast<char*>(m));
44 x[1] = 1;
45 },
46 "buffer-overflow");
47 }
48
49 // Check whether dlopen of /foo/bar.so checks /foo/hwasan/bar.so first.
TEST(HwasanTest,DlopenAbsolutePath)50 TEST(HwasanTest, DlopenAbsolutePath) {
51 std::string path = android::base::GetExecutableDirectory() + "/libtest_simple_hwasan.so";
52 ASSERT_EQ(0, access(path.c_str(), F_OK)); // Verify test setup.
53 std::string hwasan_path =
54 android::base::GetExecutableDirectory() + "/hwasan/libtest_simple_hwasan.so";
55 ASSERT_EQ(0, access(hwasan_path.c_str(), F_OK)); // Verify test setup.
56
57 void* handle = dlopen(path.c_str(), RTLD_NOW);
58 ASSERT_TRUE(handle != nullptr);
59 uint32_t* compiled_with_hwasan =
60 reinterpret_cast<uint32_t*>(dlsym(handle, "dlopen_testlib_compiled_with_hwasan"));
61 EXPECT_TRUE(*compiled_with_hwasan);
62 dlclose(handle);
63 }
64
TEST(HwasanTest,IsRunningWithHWasan)65 TEST(HwasanTest, IsRunningWithHWasan) {
66 EXPECT_TRUE(running_with_hwasan());
67 }
68