1 /*
2 * Copyright (C) 2024 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 <stdint.h>
18 #include <string.h>
19 #include <sys/mman.h>
20
21 #include <vector>
22
23 #include <android-base/silent_death_test.h>
24 #include <gtest/gtest.h>
25
26 #include "MemoryLocalUnsafe.h"
27
28 namespace unwindstack {
29
TEST(MemoryLocalUnsafeTest,read_smoke)30 TEST(MemoryLocalUnsafeTest, read_smoke) {
31 std::vector<uint8_t> src(1024);
32 memset(src.data(), 0x4c, 1024);
33
34 auto local = Memory::CreateProcessMemoryLocalUnsafe();
35
36 std::vector<uint8_t> dst(1024);
37 ASSERT_TRUE(local->ReadFully(reinterpret_cast<uint64_t>(src.data()), dst.data(), 1024));
38 ASSERT_EQ(0, memcmp(src.data(), dst.data(), 1024));
39 for (size_t i = 0; i < 1024; i++) {
40 ASSERT_EQ(0x4cU, dst[i]);
41 }
42
43 memset(src.data(), 0x23, 512);
44 ASSERT_TRUE(local->ReadFully(reinterpret_cast<uint64_t>(src.data()), dst.data(), 1024));
45 ASSERT_EQ(0, memcmp(src.data(), dst.data(), 1024));
46 for (size_t i = 0; i < 512; i++) {
47 ASSERT_EQ(0x23U, dst[i]);
48 }
49 for (size_t i = 512; i < 1024; i++) {
50 ASSERT_EQ(0x4cU, dst[i]);
51 }
52 }
53
54 using MemoryLocalUnsafeDeathTest = SilentDeathTest;
TEST_F(MemoryLocalUnsafeDeathTest,read_crash)55 TEST_F(MemoryLocalUnsafeDeathTest, read_crash) {
56 void* mapping =
57 mmap(nullptr, getpagesize(), PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
58 ASSERT_NE(MAP_FAILED, mapping);
59
60 mprotect(mapping, getpagesize(), PROT_NONE);
61
62 auto local = Memory::CreateProcessMemoryLocalUnsafe();
63 std::vector<uint8_t> buffer(100);
64 ASSERT_DEATH(local->Read(reinterpret_cast<uint64_t>(mapping), buffer.data(), buffer.size()), "");
65 }
66
67 } // namespace unwindstack
68