Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 <procinfo/process_map.h> |
| 18 | |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 19 | #include <inttypes.h> |
| 20 | #include <sys/mman.h> |
| 21 | |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 22 | #include <string> |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 23 | #include <vector> |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 24 | |
| 25 | #include <android-base/file.h> |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 26 | #include <android-base/stringprintf.h> |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 27 | |
| 28 | #include <gtest/gtest.h> |
| 29 | |
Yabin Cui | 629a862 | 2018-10-30 17:14:35 -0700 | [diff] [blame] | 30 | TEST(process_map, ReadMapFile) { |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 31 | std::string map_file = android::base::GetExecutableDirectory() + "/testdata/maps"; |
Yabin Cui | 629a862 | 2018-10-30 17:14:35 -0700 | [diff] [blame] | 32 | std::vector<android::procinfo::MapInfo> maps; |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 33 | ASSERT_TRUE(android::procinfo::ReadMapFile( |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 34 | map_file, [&](const android::procinfo::MapInfo& mapinfo) { maps.emplace_back(mapinfo); })); |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 35 | ASSERT_EQ(2043u, maps.size()); |
| 36 | ASSERT_EQ(maps[0].start, 0x12c00000ULL); |
| 37 | ASSERT_EQ(maps[0].end, 0x2ac00000ULL); |
| 38 | ASSERT_EQ(maps[0].flags, PROT_READ | PROT_WRITE); |
| 39 | ASSERT_EQ(maps[0].pgoff, 0ULL); |
Sandeep Patil | 6019458 | 2019-01-30 17:43:22 -0800 | [diff] [blame] | 40 | ASSERT_EQ(maps[0].inode, 10267643UL); |
Joel Fernandes | cc49e83 | 2018-08-24 11:57:57 -0700 | [diff] [blame] | 41 | ASSERT_EQ(maps[0].name, "[anon:dalvik-main space (region space)]"); |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 42 | ASSERT_EQ(maps[876].start, 0x70e6c4f000ULL); |
| 43 | ASSERT_EQ(maps[876].end, 0x70e6c6b000ULL); |
| 44 | ASSERT_EQ(maps[876].flags, PROT_READ | PROT_EXEC); |
| 45 | ASSERT_EQ(maps[876].pgoff, 0ULL); |
Sandeep Patil | 6019458 | 2019-01-30 17:43:22 -0800 | [diff] [blame] | 46 | ASSERT_EQ(maps[876].inode, 2407UL); |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 47 | ASSERT_EQ(maps[876].name, "/system/lib64/libutils.so"); |
| 48 | ASSERT_EQ(maps[1260].start, 0x70e96fa000ULL); |
| 49 | ASSERT_EQ(maps[1260].end, 0x70e96fb000ULL); |
| 50 | ASSERT_EQ(maps[1260].flags, PROT_READ); |
| 51 | ASSERT_EQ(maps[1260].pgoff, 0ULL); |
Sandeep Patil | 6019458 | 2019-01-30 17:43:22 -0800 | [diff] [blame] | 52 | ASSERT_EQ(maps[1260].inode, 10266154UL); |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 53 | ASSERT_EQ(maps[1260].name, |
Joel Fernandes | cc49e83 | 2018-08-24 11:57:57 -0700 | [diff] [blame] | 54 | "[anon:dalvik-classes.dex extracted in memory from " |
| 55 | "/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]"); |
Yabin Cui | 9581aea | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 56 | } |
Yabin Cui | 629a862 | 2018-10-30 17:14:35 -0700 | [diff] [blame] | 57 | |
| 58 | TEST(process_map, ReadProcessMaps) { |
| 59 | std::vector<android::procinfo::MapInfo> maps; |
| 60 | ASSERT_TRUE(android::procinfo::ReadProcessMaps( |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 61 | getpid(), [&](const android::procinfo::MapInfo& mapinfo) { maps.emplace_back(mapinfo); })); |
Yabin Cui | 629a862 | 2018-10-30 17:14:35 -0700 | [diff] [blame] | 62 | ASSERT_GT(maps.size(), 0u); |
| 63 | maps.clear(); |
| 64 | ASSERT_TRUE(android::procinfo::ReadProcessMaps(getpid(), &maps)); |
| 65 | ASSERT_GT(maps.size(), 0u); |
| 66 | } |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 67 | |
| 68 | extern "C" void malloc_disable(); |
| 69 | extern "C" void malloc_enable(); |
| 70 | |
| 71 | struct TestMapInfo { |
| 72 | TestMapInfo() = default; |
| 73 | TestMapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode, |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 74 | const char* new_name, bool isShared) |
| 75 | : start(start), end(end), flags(flags), pgoff(pgoff), inode(inode), isShared(isShared) { |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 76 | strcpy(name, new_name); |
| 77 | } |
| 78 | uint64_t start = 0; |
| 79 | uint64_t end = 0; |
| 80 | uint16_t flags = 0; |
| 81 | uint64_t pgoff = 0; |
| 82 | ino_t inode = 0; |
| 83 | char name[100] = {}; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 84 | bool isShared = false; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 85 | }; |
| 86 | |
| 87 | void VerifyReadMapFileAsyncSafe(const char* maps_data, |
| 88 | const std::vector<TestMapInfo>& expected_info) { |
| 89 | TemporaryFile tf; |
| 90 | ASSERT_TRUE(android::base::WriteStringToFd(maps_data, tf.fd)); |
| 91 | |
| 92 | std::vector<TestMapInfo> saved_info(expected_info.size()); |
| 93 | size_t num_maps = 0; |
| 94 | |
| 95 | auto callback = [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode, |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 96 | const char* name, bool shared) { |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 97 | if (num_maps != saved_info.size()) { |
| 98 | TestMapInfo& saved = saved_info[num_maps]; |
| 99 | saved.start = start; |
| 100 | saved.end = end; |
| 101 | saved.flags = flags; |
| 102 | saved.pgoff = pgoff; |
| 103 | saved.inode = inode; |
| 104 | strcpy(saved.name, name); |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 105 | saved.isShared = shared; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 106 | } |
| 107 | num_maps++; |
| 108 | }; |
| 109 | |
| 110 | std::vector<char> buffer(64 * 1024); |
| 111 | |
| 112 | #if defined(__BIONIC__) |
| 113 | // Any allocations will block after this call. |
| 114 | malloc_disable(); |
| 115 | #endif |
| 116 | |
| 117 | bool parsed = |
| 118 | android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer.data(), buffer.size(), callback); |
| 119 | |
| 120 | #if defined(__BIONIC__) |
| 121 | malloc_enable(); |
| 122 | #endif |
| 123 | |
| 124 | ASSERT_TRUE(parsed) << "Parsing of data failed:\n" << maps_data; |
| 125 | ASSERT_EQ(expected_info.size(), num_maps); |
| 126 | for (size_t i = 0; i < expected_info.size(); i++) { |
| 127 | const TestMapInfo& expected = expected_info[i]; |
| 128 | const TestMapInfo& saved = saved_info[i]; |
| 129 | EXPECT_EQ(expected.start, saved.start); |
| 130 | EXPECT_EQ(expected.end, saved.end); |
| 131 | EXPECT_EQ(expected.flags, saved.flags); |
| 132 | EXPECT_EQ(expected.pgoff, saved.pgoff); |
| 133 | EXPECT_EQ(expected.inode, saved.inode); |
| 134 | EXPECT_STREQ(expected.name, saved.name); |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 135 | EXPECT_EQ(expected.isShared, saved.isShared); |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 136 | } |
| 137 | } |
| 138 | |
| 139 | TEST(process_map, ReadMapFileAsyncSafe_invalid) { |
| 140 | std::vector<TestMapInfo> expected_info; |
| 141 | |
| 142 | VerifyReadMapFileAsyncSafe("12c00000-2ac00000", expected_info); |
| 143 | } |
| 144 | |
| 145 | TEST(process_map, ReadMapFileAsyncSafe_single) { |
| 146 | std::vector<TestMapInfo> expected_info; |
| 147 | expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643, |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 148 | "/lib/fake.so", false); |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 149 | |
| 150 | VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so", |
| 151 | expected_info); |
| 152 | } |
| 153 | |
| 154 | TEST(process_map, ReadMapFileAsyncSafe_single_with_newline) { |
| 155 | std::vector<TestMapInfo> expected_info; |
| 156 | expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643, |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 157 | "/lib/fake.so", false); |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 158 | |
| 159 | VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so\n", |
| 160 | expected_info); |
| 161 | } |
| 162 | |
| 163 | TEST(process_map, ReadMapFileAsyncSafe_single_no_library) { |
| 164 | std::vector<TestMapInfo> expected_info; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 165 | expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 0xb00, 101, "", |
| 166 | false); |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 167 | |
| 168 | VerifyReadMapFileAsyncSafe("a0000-c0000 rwxp 00000b00 00:05 101", expected_info); |
| 169 | } |
| 170 | |
| 171 | TEST(process_map, ReadMapFileAsyncSafe_multiple) { |
| 172 | std::vector<TestMapInfo> expected_info; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 173 | expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 1, 100, "", |
| 174 | false); |
| 175 | expected_info.emplace_back(0xd0000, 0xe0000, PROT_READ, 2, 101, "/lib/libsomething1.so", false); |
| 176 | expected_info.emplace_back(0xf0000, 0x100000, PROT_WRITE, 3, 102, "/lib/libsomething2.so", false); |
| 177 | expected_info.emplace_back(0x110000, 0x120000, PROT_EXEC, 4, 103, "[anon:something or another]", |
| 178 | false); |
| 179 | expected_info.emplace_back(0x130000, 0x140000, PROT_READ, 5, 104, "/lib/libsomething3.so", true); |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 180 | |
| 181 | std::string map_data = |
| 182 | "0a0000-0c0000 rwxp 00000001 00:05 100\n" |
| 183 | "0d0000-0e0000 r--p 00000002 00:05 101 /lib/libsomething1.so\n" |
| 184 | "0f0000-100000 -w-p 00000003 00:05 102 /lib/libsomething2.so\n" |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 185 | "110000-120000 --xp 00000004 00:05 103 [anon:something or another]\n" |
| 186 | "130000-140000 r--s 00000005 00:05 104 /lib/libsomething3.so\n"; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 187 | |
| 188 | VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info); |
| 189 | } |
| 190 | |
| 191 | TEST(process_map, ReadMapFileAsyncSafe_multiple_reads) { |
| 192 | std::vector<TestMapInfo> expected_info; |
| 193 | std::string map_data; |
| 194 | uint64_t start = 0xa0000; |
| 195 | for (size_t i = 0; i < 10000; i++) { |
| 196 | map_data += android::base::StringPrintf("%" PRIx64 "-%" PRIx64 " r--p %zx 01:20 %zu fake.so\n", |
| 197 | start, start + 0x1000, i, 1000 + i); |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 198 | expected_info.emplace_back(start, start + 0x1000, PROT_READ, i, 1000 + i, "fake.so", false); |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info); |
| 202 | } |
| 203 | |
| 204 | TEST(process_map, ReadMapFileAsyncSafe_buffer_nullptr) { |
| 205 | size_t num_calls = 0; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 206 | auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; }; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 207 | |
| 208 | #if defined(__BIONIC__) |
| 209 | // Any allocations will block after this call. |
| 210 | malloc_disable(); |
| 211 | #endif |
| 212 | |
| 213 | bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", nullptr, 10, callback); |
| 214 | |
| 215 | #if defined(__BIONIC__) |
| 216 | malloc_enable(); |
| 217 | #endif |
| 218 | |
| 219 | ASSERT_FALSE(parsed); |
| 220 | EXPECT_EQ(0UL, num_calls); |
| 221 | } |
| 222 | |
| 223 | TEST(process_map, ReadMapFileAsyncSafe_buffer_size_zero) { |
| 224 | size_t num_calls = 0; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 225 | auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; }; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 226 | |
| 227 | #if defined(__BIONIC__) |
| 228 | // Any allocations will block after this call. |
| 229 | malloc_disable(); |
| 230 | #endif |
| 231 | |
| 232 | char buffer[10]; |
| 233 | bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, 0, callback); |
| 234 | |
| 235 | #if defined(__BIONIC__) |
| 236 | malloc_enable(); |
| 237 | #endif |
| 238 | |
| 239 | ASSERT_FALSE(parsed); |
| 240 | EXPECT_EQ(0UL, num_calls); |
| 241 | } |
| 242 | |
| 243 | TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_no_calls) { |
| 244 | size_t num_calls = 0; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 245 | auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; }; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 246 | |
| 247 | #if defined(__BIONIC__) |
| 248 | // Any allocations will block after this call. |
| 249 | malloc_disable(); |
| 250 | #endif |
| 251 | |
| 252 | char buffer[10]; |
| 253 | bool parsed = |
| 254 | android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, sizeof(buffer), callback); |
| 255 | |
| 256 | #if defined(__BIONIC__) |
| 257 | malloc_enable(); |
| 258 | #endif |
| 259 | |
| 260 | ASSERT_FALSE(parsed); |
| 261 | EXPECT_EQ(0UL, num_calls); |
| 262 | } |
| 263 | |
| 264 | TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_could_parse) { |
| 265 | TemporaryFile tf; |
| 266 | ASSERT_TRUE(android::base::WriteStringToFd( |
| 267 | "0a0000-0c0000 rwxp 00000001 00:05 100 /fake/lib.so\n", tf.fd)); |
| 268 | |
| 269 | size_t num_calls = 0; |
Edgar Arriaga | fd214c1 | 2020-11-20 18:00:41 -0800 | [diff] [blame] | 270 | auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; }; |
Christopher Ferris | 8090b2e | 2019-08-16 10:49:34 -0700 | [diff] [blame] | 271 | |
| 272 | #if defined(__BIONIC__) |
| 273 | // Any allocations will block after this call. |
| 274 | malloc_disable(); |
| 275 | #endif |
| 276 | |
| 277 | char buffer[39]; |
| 278 | bool parsed = android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer, sizeof(buffer), callback); |
| 279 | |
| 280 | #if defined(__BIONIC__) |
| 281 | malloc_enable(); |
| 282 | #endif |
| 283 | |
| 284 | ASSERT_FALSE(parsed); |
| 285 | EXPECT_EQ(0UL, num_calls); |
| 286 | } |