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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "base/debug/proc_maps_linux.h" |
| 6 #include "base/logging.h" |
| 7 #include "base/strings/stringprintf.h" |
| 8 #include "testing/gtest/include/gtest/gtest.h" |
| 9 |
| 10 namespace base { |
| 11 namespace debug { |
| 12 |
| 13 TEST(ProcMapsTest, Empty) { |
| 14 std::vector<MappedMemoryRegion> regions; |
| 15 EXPECT_TRUE(ParseProcMaps("", ®ions)); |
| 16 EXPECT_EQ(0u, regions.size()); |
| 17 } |
| 18 |
| 19 TEST(ProcMapsTest, NoSpaces) { |
| 20 static const char kNoSpaces[] = |
| 21 "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat\n"; |
| 22 |
| 23 std::vector<MappedMemoryRegion> regions; |
| 24 ASSERT_TRUE(ParseProcMaps(kNoSpaces, ®ions)); |
| 25 ASSERT_EQ(1u, regions.size()); |
| 26 |
| 27 EXPECT_EQ(0x00400000u, regions[0].start); |
| 28 EXPECT_EQ(0x0040b000u, regions[0].end); |
| 29 EXPECT_EQ(0x00002200u, regions[0].offset); |
| 30 EXPECT_EQ("/bin/cat", regions[0].path); |
| 31 } |
| 32 |
| 33 TEST(ProcMapsTest, Spaces) { |
| 34 static const char kSpaces[] = |
| 35 "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/space cat\n"; |
| 36 |
| 37 std::vector<MappedMemoryRegion> regions; |
| 38 ASSERT_TRUE(ParseProcMaps(kSpaces, ®ions)); |
| 39 ASSERT_EQ(1u, regions.size()); |
| 40 |
| 41 EXPECT_EQ(0x00400000u, regions[0].start); |
| 42 EXPECT_EQ(0x0040b000u, regions[0].end); |
| 43 EXPECT_EQ(0x00002200u, regions[0].offset); |
| 44 EXPECT_EQ("/bin/space cat", regions[0].path); |
| 45 } |
| 46 |
| 47 TEST(ProcMapsTest, NoNewline) { |
| 48 static const char kNoSpaces[] = |
| 49 "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat"; |
| 50 |
| 51 std::vector<MappedMemoryRegion> regions; |
| 52 ASSERT_FALSE(ParseProcMaps(kNoSpaces, ®ions)); |
| 53 } |
| 54 |
| 55 TEST(ProcMapsTest, NoPath) { |
| 56 static const char kNoPath[] = |
| 57 "00400000-0040b000 rw-p 00000000 00:00 0 \n"; |
| 58 |
| 59 std::vector<MappedMemoryRegion> regions; |
| 60 ASSERT_TRUE(ParseProcMaps(kNoPath, ®ions)); |
| 61 ASSERT_EQ(1u, regions.size()); |
| 62 |
| 63 EXPECT_EQ(0x00400000u, regions[0].start); |
| 64 EXPECT_EQ(0x0040b000u, regions[0].end); |
| 65 EXPECT_EQ(0x00000000u, regions[0].offset); |
| 66 EXPECT_EQ("", regions[0].path); |
| 67 } |
| 68 |
| 69 TEST(ProcMapsTest, Heap) { |
| 70 static const char kHeap[] = |
| 71 "022ac000-022cd000 rw-p 00000000 00:00 0 [heap]\n"; |
| 72 |
| 73 std::vector<MappedMemoryRegion> regions; |
| 74 ASSERT_TRUE(ParseProcMaps(kHeap, ®ions)); |
| 75 ASSERT_EQ(1u, regions.size()); |
| 76 |
| 77 EXPECT_EQ(0x022ac000u, regions[0].start); |
| 78 EXPECT_EQ(0x022cd000u, regions[0].end); |
| 79 EXPECT_EQ(0x00000000u, regions[0].offset); |
| 80 EXPECT_EQ("[heap]", regions[0].path); |
| 81 } |
| 82 |
| 83 #if defined(ARCH_CPU_32_BITS) |
| 84 TEST(ProcMapsTest, Stack32) { |
| 85 static const char kStack[] = |
| 86 "beb04000-beb25000 rw-p 00000000 00:00 0 [stack]\n"; |
| 87 |
| 88 std::vector<MappedMemoryRegion> regions; |
| 89 ASSERT_TRUE(ParseProcMaps(kStack, ®ions)); |
| 90 ASSERT_EQ(1u, regions.size()); |
| 91 |
| 92 EXPECT_EQ(0xbeb04000u, regions[0].start); |
| 93 EXPECT_EQ(0xbeb25000u, regions[0].end); |
| 94 EXPECT_EQ(0x00000000u, regions[0].offset); |
| 95 EXPECT_EQ("[stack]", regions[0].path); |
| 96 } |
| 97 #elif defined(ARCH_CPU_64_BITS) |
| 98 TEST(ProcMapsTest, Stack64) { |
| 99 static const char kStack[] = |
| 100 "7fff69c5b000-7fff69c7d000 rw-p 00000000 00:00 0 [stack]\n"; |
| 101 |
| 102 std::vector<MappedMemoryRegion> regions; |
| 103 ASSERT_TRUE(ParseProcMaps(kStack, ®ions)); |
| 104 ASSERT_EQ(1u, regions.size()); |
| 105 |
| 106 EXPECT_EQ(0x7fff69c5b000u, regions[0].start); |
| 107 EXPECT_EQ(0x7fff69c7d000u, regions[0].end); |
| 108 EXPECT_EQ(0x00000000u, regions[0].offset); |
| 109 EXPECT_EQ("[stack]", regions[0].path); |
| 110 } |
| 111 #endif |
| 112 |
| 113 TEST(ProcMapsTest, Multiple) { |
| 114 static const char kMultiple[] = |
| 115 "00400000-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n" |
| 116 "0060a000-0060b000 r--p 0000a000 fc:00 794418 /bin/cat\n" |
| 117 "0060b000-0060c000 rw-p 0000b000 fc:00 794418 /bin/cat\n"; |
| 118 |
| 119 std::vector<MappedMemoryRegion> regions; |
| 120 ASSERT_TRUE(ParseProcMaps(kMultiple, ®ions)); |
| 121 ASSERT_EQ(3u, regions.size()); |
| 122 |
| 123 EXPECT_EQ(0x00400000u, regions[0].start); |
| 124 EXPECT_EQ(0x0040b000u, regions[0].end); |
| 125 EXPECT_EQ(0x00000000u, regions[0].offset); |
| 126 EXPECT_EQ("/bin/cat", regions[0].path); |
| 127 |
| 128 EXPECT_EQ(0x0060a000u, regions[1].start); |
| 129 EXPECT_EQ(0x0060b000u, regions[1].end); |
| 130 EXPECT_EQ(0x0000a000u, regions[1].offset); |
| 131 EXPECT_EQ("/bin/cat", regions[1].path); |
| 132 |
| 133 EXPECT_EQ(0x0060b000u, regions[2].start); |
| 134 EXPECT_EQ(0x0060c000u, regions[2].end); |
| 135 EXPECT_EQ(0x0000b000u, regions[2].offset); |
| 136 EXPECT_EQ("/bin/cat", regions[2].path); |
| 137 } |
| 138 |
| 139 TEST(ProcMapsTest, Permissions) { |
| 140 static struct { |
| 141 const char* input; |
| 142 uint8 permissions; |
| 143 } kTestCases[] = { |
| 144 {"00400000-0040b000 ---s 00000000 fc:00 794418 /bin/cat\n", 0}, |
| 145 {"00400000-0040b000 r--s 00000000 fc:00 794418 /bin/cat\n", |
| 146 MappedMemoryRegion::READ}, |
| 147 {"00400000-0040b000 -w-s 00000000 fc:00 794418 /bin/cat\n", |
| 148 MappedMemoryRegion::WRITE}, |
| 149 {"00400000-0040b000 --xs 00000000 fc:00 794418 /bin/cat\n", |
| 150 MappedMemoryRegion::EXECUTE}, |
| 151 {"00400000-0040b000 rwxs 00000000 fc:00 794418 /bin/cat\n", |
| 152 MappedMemoryRegion::READ | MappedMemoryRegion::WRITE | |
| 153 MappedMemoryRegion::EXECUTE}, |
| 154 {"00400000-0040b000 ---p 00000000 fc:00 794418 /bin/cat\n", |
| 155 MappedMemoryRegion::PRIVATE}, |
| 156 {"00400000-0040b000 r--p 00000000 fc:00 794418 /bin/cat\n", |
| 157 MappedMemoryRegion::READ | MappedMemoryRegion::PRIVATE}, |
| 158 {"00400000-0040b000 -w-p 00000000 fc:00 794418 /bin/cat\n", |
| 159 MappedMemoryRegion::WRITE | MappedMemoryRegion::PRIVATE}, |
| 160 {"00400000-0040b000 --xp 00000000 fc:00 794418 /bin/cat\n", |
| 161 MappedMemoryRegion::EXECUTE | MappedMemoryRegion::PRIVATE}, |
| 162 {"00400000-0040b000 rwxp 00000000 fc:00 794418 /bin/cat\n", |
| 163 MappedMemoryRegion::READ | MappedMemoryRegion::WRITE | |
| 164 MappedMemoryRegion::EXECUTE | MappedMemoryRegion::PRIVATE}, |
| 165 { NULL, 0 }, |
| 166 }; |
| 167 |
| 168 for (size_t i = 0; kTestCases[i].input != NULL; ++i) { |
| 169 SCOPED_TRACE( |
| 170 base::StringPrintf("kTestCases[%zu] = %s", i, kTestCases[i].input)); |
| 171 |
| 172 std::vector<MappedMemoryRegion> regions; |
| 173 EXPECT_TRUE(ParseProcMaps(kTestCases[i].input, ®ions)); |
| 174 EXPECT_EQ(1u, regions.size()); |
| 175 if (regions.empty()) |
| 176 continue; |
| 177 EXPECT_EQ(kTestCases[i].permissions, regions[0].permissions); |
| 178 } |
| 179 } |
| 180 |
| 181 TEST(ProcMapsTest, ReadProcMaps) { |
| 182 std::string proc_maps; |
| 183 ASSERT_TRUE(ReadProcMaps(&proc_maps)); |
| 184 |
| 185 std::vector<MappedMemoryRegion> regions; |
| 186 ASSERT_TRUE(ParseProcMaps(proc_maps, ®ions)); |
| 187 ASSERT_FALSE(regions.empty()); |
| 188 |
| 189 // We should be able to find where our stack is mapped by looking at the |
| 190 // address of |proc_maps|. |
| 191 uintptr_t address = reinterpret_cast<uintptr_t>(&proc_maps); |
| 192 for (size_t i = 0; i < regions.size(); ++i) { |
| 193 if (address >= regions[i].start && address < regions[i].end) { |
| 194 EXPECT_EQ("[stack]", regions[i].path); |
| 195 EXPECT_TRUE(regions[i].permissions & MappedMemoryRegion::READ); |
| 196 EXPECT_TRUE(regions[i].permissions & MappedMemoryRegion::WRITE); |
| 197 EXPECT_FALSE(regions[i].permissions & MappedMemoryRegion::EXECUTE); |
| 198 EXPECT_TRUE(regions[i].permissions & MappedMemoryRegion::PRIVATE); |
| 199 return; |
| 200 } |
| 201 } |
| 202 |
| 203 ADD_FAILURE() << "Did not find stack in /proc/self/maps."; |
| 204 } |
| 205 |
| 206 TEST(ProcMapsTest, MissingFields) { |
| 207 static const char* kTestCases[] = { |
| 208 "00400000\n", // Missing end + beyond. |
| 209 "00400000-0040b000\n", // Missing perms + beyond. |
| 210 "00400000-0040b000 r-xp\n", // Missing offset + beyond. |
| 211 "00400000-0040b000 r-xp 00000000\n", // Missing device + beyond. |
| 212 "00400000-0040b000 r-xp 00000000 fc:00\n", // Missing inode + beyond. |
| 213 "00400000-0040b000 00000000 fc:00 794418 /bin/cat\n", // Missing perms. |
| 214 "00400000-0040b000 r-xp fc:00 794418 /bin/cat\n", // Missing offset. |
| 215 "00400000-0040b000 r-xp 00000000 fc:00 /bin/cat\n", // Missing inode. |
| 216 "00400000 r-xp 00000000 fc:00 794418 /bin/cat\n", // Missing end. |
| 217 "-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n", // Missing start. |
| 218 "00400000-0040b000 r-xp 00000000 794418 /bin/cat\n", // Missing device. |
| 219 }; |
| 220 |
| 221 for (size_t i = 0; i < arraysize(kTestCases); ++i) { |
| 222 SCOPED_TRACE(base::StringPrintf("kTestCases[%zu] = %s", i, kTestCases[i])); |
| 223 std::vector<MappedMemoryRegion> regions; |
| 224 EXPECT_FALSE(ParseProcMaps(kTestCases[i], ®ions)); |
| 225 } |
| 226 } |
| 227 |
| 228 TEST(ProcMapsTest, InvalidInput) { |
| 229 static const char* kTestCases[] = { |
| 230 "thisisal-0040b000 rwxp 00000000 fc:00 794418 /bin/cat\n", |
| 231 "0040000d-linvalid rwxp 00000000 fc:00 794418 /bin/cat\n", |
| 232 "00400000-0040b000 inpu 00000000 fc:00 794418 /bin/cat\n", |
| 233 "00400000-0040b000 rwxp tforproc fc:00 794418 /bin/cat\n", |
| 234 "00400000-0040b000 rwxp 00000000 ma:ps 794418 /bin/cat\n", |
| 235 "00400000-0040b000 rwxp 00000000 fc:00 parse! /bin/cat\n", |
| 236 }; |
| 237 |
| 238 for (size_t i = 0; i < arraysize(kTestCases); ++i) { |
| 239 SCOPED_TRACE(base::StringPrintf("kTestCases[%zu] = %s", i, kTestCases[i])); |
| 240 std::vector<MappedMemoryRegion> regions; |
| 241 EXPECT_FALSE(ParseProcMaps(kTestCases[i], ®ions)); |
| 242 } |
| 243 } |
| 244 |
| 245 } // namespace debug |
| 246 } // namespace base |
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