| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdint.h> |
| #include <sys/mman.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include <gtest/gtest.h> |
| |
| #include <android-base/file.h> |
| #include <unwindstack/Maps.h> |
| |
| namespace unwindstack { |
| |
| class TestUpdatableMaps : public LocalUpdatableMaps { |
| public: |
| TestUpdatableMaps() : LocalUpdatableMaps() {} |
| virtual ~TestUpdatableMaps() = default; |
| |
| const std::string GetMapsFile() const override { return maps_file_; } |
| |
| void TestSetMapsFile(const std::string& maps_file) { maps_file_ = maps_file; } |
| |
| private: |
| std::string maps_file_; |
| }; |
| |
| class LocalUpdatableMapsTest : public ::testing::Test { |
| protected: |
| static const std::string GetDefaultMapString() { |
| return "3000-4000 r-xp 00000 00:00 0\n8000-9000 r-xp 00000 00:00 0\n"; |
| } |
| |
| void SetUp() override { |
| TemporaryFile tf; |
| ASSERT_TRUE(android::base::WriteStringToFile(GetDefaultMapString(), tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Parse()); |
| ASSERT_EQ(2U, maps_.Total()); |
| |
| auto map_info = maps_.Get(0); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x3000U, map_info->start()); |
| EXPECT_EQ(0x4000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| |
| map_info = maps_.Get(1); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x8000U, map_info->start()); |
| EXPECT_EQ(0x9000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| } |
| |
| TestUpdatableMaps maps_; |
| }; |
| |
| TEST_F(LocalUpdatableMapsTest, same_map) { |
| TemporaryFile tf; |
| ASSERT_TRUE(android::base::WriteStringToFile(GetDefaultMapString(), tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse()); |
| ASSERT_EQ(2U, maps_.Total()); |
| |
| auto map_info = maps_.Get(0); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x3000U, map_info->start()); |
| EXPECT_EQ(0x4000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(nullptr, map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(1), map_info->next_map()); |
| |
| map_info = maps_.Get(1); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x8000U, map_info->start()); |
| EXPECT_EQ(0x9000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(0), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->next_map()); |
| } |
| |
| TEST_F(LocalUpdatableMapsTest, same_map_new_perms) { |
| TemporaryFile tf; |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("3000-4000 rwxp 00000 00:00 0\n" |
| "8000-9000 r-xp 00000 00:00 0\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse()); |
| ASSERT_EQ(2U, maps_.Total()); |
| |
| auto map_info = maps_.Get(0); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x3000U, map_info->start()); |
| EXPECT_EQ(0x4000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(nullptr, map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(1), map_info->next_map()); |
| |
| map_info = maps_.Get(1); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x8000U, map_info->start()); |
| EXPECT_EQ(0x9000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(0), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->next_map()); |
| } |
| |
| TEST_F(LocalUpdatableMapsTest, same_map_new_name) { |
| TemporaryFile tf; |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n" |
| "8000-9000 r-xp 00000 00:00 0\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse()); |
| ASSERT_EQ(2U, maps_.Total()); |
| |
| auto map_info = maps_.Get(0); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x3000U, map_info->start()); |
| EXPECT_EQ(0x4000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_EQ("/fake/lib.so", map_info->name()); |
| EXPECT_EQ(nullptr, map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(1), map_info->next_map()); |
| |
| map_info = maps_.Get(1); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x8000U, map_info->start()); |
| EXPECT_EQ(0x9000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(0), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->next_map()); |
| } |
| |
| TEST_F(LocalUpdatableMapsTest, only_add_maps) { |
| TemporaryFile tf; |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("1000-2000 r-xp 00000 00:00 0\n" |
| "3000-4000 r-xp 00000 00:00 0\n" |
| "8000-9000 r-xp 00000 00:00 0\n" |
| "a000-f000 r-xp 00000 00:00 0\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse()); |
| ASSERT_EQ(4U, maps_.Total()); |
| |
| auto map_info = maps_.Get(0); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x1000U, map_info->start()); |
| EXPECT_EQ(0x2000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(nullptr, map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(1), map_info->next_map()); |
| |
| map_info = maps_.Get(1); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x3000U, map_info->start()); |
| EXPECT_EQ(0x4000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(0), map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(2), map_info->next_map()); |
| |
| map_info = maps_.Get(2); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x8000U, map_info->start()); |
| EXPECT_EQ(0x9000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(1), map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(3), map_info->next_map()); |
| |
| map_info = maps_.Get(3); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0xa000U, map_info->start()); |
| EXPECT_EQ(0xf000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(2), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->next_map()); |
| } |
| |
| TEST_F(LocalUpdatableMapsTest, all_new_maps) { |
| TemporaryFile tf; |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("1000-2000 r-xp 00000 00:00 0\n" |
| "a000-f000 r-xp 00000 00:00 0\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse()); |
| ASSERT_EQ(2U, maps_.Total()); |
| |
| auto map_info = maps_.Get(0); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x1000U, map_info->start()); |
| EXPECT_EQ(0x2000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(nullptr, map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(1), map_info->next_map()); |
| |
| map_info = maps_.Get(1); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0xa000U, map_info->start()); |
| EXPECT_EQ(0xf000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| EXPECT_EQ(maps_.Get(0), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->next_map()); |
| } |
| |
| TEST_F(LocalUpdatableMapsTest, add_map_prev_name_updated) { |
| TemporaryFile tf; |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("3000-4000 rwxp 00000 00:00 0\n" |
| "8000-9000 r-xp 00000 00:00 0\n" |
| "9000-a000 r-xp 00000 00:00 0\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse()); |
| ASSERT_EQ(3U, maps_.Total()); |
| |
| auto map_info = maps_.Get(2); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x9000U, map_info->start()); |
| EXPECT_EQ(0xA000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_TRUE(map_info->name().empty()); |
| |
| // Check all of the prev and next pointers. |
| EXPECT_EQ(nullptr, maps_.Get(0)->prev_map()); |
| EXPECT_EQ(maps_.Get(1), maps_.Get(0)->next_map()); |
| EXPECT_EQ(maps_.Get(0), maps_.Get(1)->prev_map()); |
| EXPECT_EQ(maps_.Get(2), maps_.Get(1)->next_map()); |
| EXPECT_EQ(maps_.Get(1), maps_.Get(2)->prev_map()); |
| EXPECT_EQ(nullptr, maps_.Get(2)->next_map()); |
| } |
| |
| TEST_F(LocalUpdatableMapsTest, add_map_prev_real_name_updated) { |
| TemporaryFile tf; |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n" |
| "4000-5000 ---p 00000 00:00 0\n" |
| "7000-8000 r-xp 00000 00:00 0 /fake/lib.so\n" |
| "8000-9000 ---p 00000 00:00 0\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| bool any_changed; |
| ASSERT_TRUE(maps_.Reparse(&any_changed)); |
| ASSERT_EQ(4U, maps_.Total()); |
| ASSERT_TRUE(any_changed); |
| |
| // Try again and assert there are no changes this time. |
| ASSERT_TRUE(maps_.Reparse(&any_changed)); |
| ASSERT_EQ(4U, maps_.Total()); |
| ASSERT_FALSE(any_changed); |
| |
| auto map_info = maps_.Get(2); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x7000U, map_info->start()); |
| EXPECT_EQ(0x8000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_EQ(maps_.Get(0), map_info->GetPrevRealMap()); |
| EXPECT_EQ(maps_.Get(1), map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(3), map_info->next_map()); |
| EXPECT_EQ("/fake/lib.so", map_info->name()); |
| |
| map_info = maps_.Get(3); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x8000U, map_info->start()); |
| EXPECT_EQ(0x9000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_TRUE(map_info->IsBlank()); |
| EXPECT_EQ(nullptr, map_info->GetPrevRealMap()); |
| EXPECT_EQ(maps_.Get(2), map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(4), map_info->next_map()); |
| EXPECT_TRUE(map_info->name().empty()); |
| |
| ASSERT_TRUE( |
| android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n" |
| "4000-5000 ---p 00000 00:00 0\n" |
| "7000-8000 r-xp 00000 00:00 0 /fake/lib.so\n" |
| "8000-9000 ---p 00000 00:00 0\n" |
| "9000-a000 r-xp 00000 00:00 0 /fake/lib2.so\n" |
| "a000-b000 r-xp 00000 00:00 0 /fake/lib3.so\n", |
| tf.path)); |
| |
| maps_.TestSetMapsFile(tf.path); |
| ASSERT_TRUE(maps_.Reparse(&any_changed)); |
| ASSERT_EQ(6U, maps_.Total()); |
| ASSERT_TRUE(any_changed); |
| |
| // Try again and assert there are no changes this time. |
| ASSERT_TRUE(maps_.Reparse(&any_changed)); |
| ASSERT_EQ(6U, maps_.Total()); |
| ASSERT_FALSE(any_changed); |
| |
| map_info = maps_.Get(2); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x7000U, map_info->start()); |
| EXPECT_EQ(0x8000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_EQ("/fake/lib.so", map_info->name()); |
| EXPECT_EQ(maps_.Get(1), map_info->prev_map()); |
| EXPECT_EQ(maps_.Get(0), map_info->GetPrevRealMap()); |
| EXPECT_EQ(maps_.Get(3), map_info->next_map()); |
| |
| map_info = maps_.Get(4); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0x9000U, map_info->start()); |
| EXPECT_EQ(0xA000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_EQ("/fake/lib2.so", map_info->name()); |
| EXPECT_EQ(maps_.Get(3), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->GetPrevRealMap()); |
| EXPECT_EQ(maps_.Get(5), map_info->next_map()); |
| |
| map_info = maps_.Get(5); |
| ASSERT_TRUE(map_info != nullptr); |
| EXPECT_EQ(0xA000U, map_info->start()); |
| EXPECT_EQ(0xB000U, map_info->end()); |
| EXPECT_EQ(0U, map_info->offset()); |
| EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags()); |
| EXPECT_EQ("/fake/lib3.so", map_info->name()); |
| EXPECT_EQ(maps_.Get(4), map_info->prev_map()); |
| EXPECT_EQ(nullptr, map_info->GetPrevRealMap()); |
| EXPECT_EQ(nullptr, map_info->next_map()); |
| } |
| |
| } // namespace unwindstack |