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387 lines
13 KiB
387 lines
13 KiB
4 months ago
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdint.h>
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#include <sys/mman.h>
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#include <string>
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#include <vector>
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#include <gtest/gtest.h>
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#include <android-base/file.h>
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#include <unwindstack/Maps.h>
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namespace unwindstack {
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class TestUpdatableMaps : public LocalUpdatableMaps {
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public:
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TestUpdatableMaps() : LocalUpdatableMaps() {}
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virtual ~TestUpdatableMaps() = default;
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const std::string GetMapsFile() const override { return maps_file_; }
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void TestSetMapsFile(const std::string& maps_file) { maps_file_ = maps_file; }
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const std::vector<std::unique_ptr<MapInfo>>& TestGetSavedMaps() { return saved_maps_; }
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private:
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std::string maps_file_;
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};
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class LocalUpdatableMapsTest : public ::testing::Test {
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protected:
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static const std::string GetDefaultMapString() {
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return "3000-4000 r-xp 00000 00:00 0\n8000-9000 r-xp 00000 00:00 0\n";
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}
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void SetUp() override {
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TemporaryFile tf;
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ASSERT_TRUE(android::base::WriteStringToFile(GetDefaultMapString(), tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Parse());
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ASSERT_EQ(2U, maps_.Total());
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MapInfo* map_info = maps_.Get(0);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(1);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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}
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TestUpdatableMaps maps_;
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};
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TEST_F(LocalUpdatableMapsTest, same_map) {
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TemporaryFile tf;
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ASSERT_TRUE(android::base::WriteStringToFile(GetDefaultMapString(), tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Reparse());
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ASSERT_EQ(2U, maps_.Total());
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EXPECT_EQ(0U, maps_.TestGetSavedMaps().size());
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MapInfo* map_info = maps_.Get(0);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(1);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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}
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TEST_F(LocalUpdatableMapsTest, same_map_new_perms) {
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TemporaryFile tf;
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ASSERT_TRUE(
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android::base::WriteStringToFile("3000-4000 rwxp 00000 00:00 0\n"
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"8000-9000 r-xp 00000 00:00 0\n",
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tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Reparse());
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ASSERT_EQ(2U, maps_.Total());
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MapInfo* map_info = maps_.Get(0);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(1);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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auto& saved_maps = maps_.TestGetSavedMaps();
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ASSERT_EQ(1U, saved_maps.size());
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map_info = saved_maps[0].get();
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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}
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TEST_F(LocalUpdatableMapsTest, same_map_new_name) {
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TemporaryFile tf;
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ASSERT_TRUE(
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android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n"
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"8000-9000 r-xp 00000 00:00 0\n",
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tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Reparse());
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ASSERT_EQ(2U, maps_.Total());
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MapInfo* map_info = maps_.Get(0);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_EQ("/fake/lib.so", map_info->name());
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map_info = maps_.Get(1);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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auto& saved_maps = maps_.TestGetSavedMaps();
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ASSERT_EQ(1U, saved_maps.size());
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map_info = saved_maps[0].get();
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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}
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TEST_F(LocalUpdatableMapsTest, only_add_maps) {
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TemporaryFile tf;
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ASSERT_TRUE(
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android::base::WriteStringToFile("1000-2000 r-xp 00000 00:00 0\n"
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"3000-4000 r-xp 00000 00:00 0\n"
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"8000-9000 r-xp 00000 00:00 0\n"
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"a000-f000 r-xp 00000 00:00 0\n",
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tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Reparse());
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ASSERT_EQ(4U, maps_.Total());
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EXPECT_EQ(0U, maps_.TestGetSavedMaps().size());
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MapInfo* map_info = maps_.Get(0);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x1000U, map_info->start());
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EXPECT_EQ(0x2000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(1);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(2);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(3);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0xa000U, map_info->start());
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EXPECT_EQ(0xf000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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}
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TEST_F(LocalUpdatableMapsTest, all_new_maps) {
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TemporaryFile tf;
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ASSERT_TRUE(
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android::base::WriteStringToFile("1000-2000 r-xp 00000 00:00 0\n"
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"a000-f000 r-xp 00000 00:00 0\n",
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tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Reparse());
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ASSERT_EQ(2U, maps_.Total());
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MapInfo* map_info = maps_.Get(0);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x1000U, map_info->start());
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EXPECT_EQ(0x2000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = maps_.Get(1);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0xa000U, map_info->start());
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EXPECT_EQ(0xf000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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auto& saved_maps = maps_.TestGetSavedMaps();
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ASSERT_EQ(2U, saved_maps.size());
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map_info = saved_maps[0].get();
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x3000U, map_info->start());
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EXPECT_EQ(0x4000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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map_info = saved_maps[1].get();
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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}
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TEST_F(LocalUpdatableMapsTest, add_map_prev_name_updated) {
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TemporaryFile tf;
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ASSERT_TRUE(
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android::base::WriteStringToFile("3000-4000 rwxp 00000 00:00 0\n"
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"8000-9000 r-xp 00000 00:00 0\n"
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"9000-a000 r-xp 00000 00:00 0\n",
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tf.path));
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maps_.TestSetMapsFile(tf.path);
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ASSERT_TRUE(maps_.Reparse());
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ASSERT_EQ(3U, maps_.Total());
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MapInfo* map_info = maps_.Get(2);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x9000U, map_info->start());
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EXPECT_EQ(0xA000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_TRUE(map_info->name().empty());
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EXPECT_EQ(maps_.Get(1), map_info->prev_map());
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}
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TEST_F(LocalUpdatableMapsTest, add_map_prev_real_name_updated) {
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TemporaryFile tf;
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ASSERT_TRUE(
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android::base::WriteStringToFile("3000-4000 r-xp 00000 00:00 0 /fake/lib.so\n"
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"4000-5000 ---p 00000 00:00 0\n"
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"7000-8000 r-xp 00000 00:00 0 /fake/lib1.so\n"
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"8000-9000 ---p 00000 00:00 0\n",
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tf.path));
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maps_.TestSetMapsFile(tf.path);
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bool any_changed;
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ASSERT_TRUE(maps_.Reparse(&any_changed));
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ASSERT_EQ(4U, maps_.Total());
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ASSERT_TRUE(any_changed);
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// Try again and assert there are no changes this time.
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ASSERT_TRUE(maps_.Reparse(&any_changed));
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ASSERT_EQ(4U, maps_.Total());
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ASSERT_FALSE(any_changed);
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MapInfo* map_info = maps_.Get(2);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x7000U, map_info->start());
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EXPECT_EQ(0x8000U, map_info->end());
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EXPECT_EQ(0U, map_info->offset());
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EXPECT_EQ(PROT_READ | PROT_EXEC, map_info->flags());
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EXPECT_EQ(maps_.Get(0), map_info->prev_real_map());
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EXPECT_EQ(maps_.Get(1), map_info->prev_map());
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EXPECT_EQ("/fake/lib1.so", map_info->name());
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map_info = maps_.Get(3);
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ASSERT_TRUE(map_info != nullptr);
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EXPECT_EQ(0x8000U, map_info->start());
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EXPECT_EQ(0x9000U, map_info->end());
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|
EXPECT_EQ(0U, map_info->offset());
|
||
|
|
EXPECT_TRUE(map_info->IsBlank());
|
||
|
|
EXPECT_EQ(maps_.Get(2), map_info->prev_real_map());
|
||
|
|
EXPECT_EQ(maps_.Get(2), map_info->prev_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/lib1.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/lib1.so", map_info->name());
|
||
|
|
EXPECT_EQ(maps_.Get(1), map_info->prev_map());
|
||
|
|
EXPECT_EQ(maps_.Get(0), map_info->prev_real_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(maps_.Get(2), map_info->prev_real_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(maps_.Get(4), map_info->prev_real_map());
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace unwindstack
|