287 lines
9.5 KiB
C++
287 lines
9.5 KiB
C++
/*
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* Copyright (C) 2018 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 <procinfo/process_map.h>
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#include <inttypes.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 <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <gtest/gtest.h>
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TEST(process_map, ReadMapFile) {
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std::string map_file = android::base::GetExecutableDirectory() + "/testdata/maps";
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std::vector<android::procinfo::MapInfo> maps;
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ASSERT_TRUE(android::procinfo::ReadMapFile(
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map_file, [&](const android::procinfo::MapInfo& mapinfo) { maps.emplace_back(mapinfo); }));
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ASSERT_EQ(2043u, maps.size());
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ASSERT_EQ(maps[0].start, 0x12c00000ULL);
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ASSERT_EQ(maps[0].end, 0x2ac00000ULL);
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ASSERT_EQ(maps[0].flags, PROT_READ | PROT_WRITE);
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ASSERT_EQ(maps[0].pgoff, 0ULL);
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ASSERT_EQ(maps[0].inode, 10267643UL);
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ASSERT_EQ(maps[0].name, "[anon:dalvik-main space (region space)]");
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ASSERT_EQ(maps[876].start, 0x70e6c4f000ULL);
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ASSERT_EQ(maps[876].end, 0x70e6c6b000ULL);
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ASSERT_EQ(maps[876].flags, PROT_READ | PROT_EXEC);
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ASSERT_EQ(maps[876].pgoff, 0ULL);
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ASSERT_EQ(maps[876].inode, 2407UL);
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ASSERT_EQ(maps[876].name, "/system/lib64/libutils.so");
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ASSERT_EQ(maps[1260].start, 0x70e96fa000ULL);
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ASSERT_EQ(maps[1260].end, 0x70e96fb000ULL);
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ASSERT_EQ(maps[1260].flags, PROT_READ);
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ASSERT_EQ(maps[1260].pgoff, 0ULL);
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ASSERT_EQ(maps[1260].inode, 10266154UL);
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ASSERT_EQ(maps[1260].name,
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"[anon:dalvik-classes.dex extracted in memory from "
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"/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]");
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}
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TEST(process_map, ReadProcessMaps) {
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std::vector<android::procinfo::MapInfo> maps;
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ASSERT_TRUE(android::procinfo::ReadProcessMaps(
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getpid(), [&](const android::procinfo::MapInfo& mapinfo) { maps.emplace_back(mapinfo); }));
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ASSERT_GT(maps.size(), 0u);
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maps.clear();
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ASSERT_TRUE(android::procinfo::ReadProcessMaps(getpid(), &maps));
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ASSERT_GT(maps.size(), 0u);
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}
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extern "C" void malloc_disable();
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extern "C" void malloc_enable();
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struct TestMapInfo {
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TestMapInfo() = default;
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TestMapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
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const char* new_name, bool isShared)
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: start(start), end(end), flags(flags), pgoff(pgoff), inode(inode), isShared(isShared) {
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strcpy(name, new_name);
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}
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uint64_t start = 0;
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uint64_t end = 0;
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uint16_t flags = 0;
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uint64_t pgoff = 0;
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ino_t inode = 0;
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char name[100] = {};
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bool isShared = false;
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};
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void VerifyReadMapFileAsyncSafe(const char* maps_data,
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const std::vector<TestMapInfo>& expected_info) {
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TemporaryFile tf;
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ASSERT_TRUE(android::base::WriteStringToFd(maps_data, tf.fd));
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std::vector<TestMapInfo> saved_info(expected_info.size());
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size_t num_maps = 0;
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auto callback = [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, ino_t inode,
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const char* name, bool shared) {
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if (num_maps != saved_info.size()) {
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TestMapInfo& saved = saved_info[num_maps];
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saved.start = start;
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saved.end = end;
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saved.flags = flags;
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saved.pgoff = pgoff;
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saved.inode = inode;
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strcpy(saved.name, name);
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saved.isShared = shared;
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}
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num_maps++;
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};
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std::vector<char> buffer(64 * 1024);
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#if defined(__BIONIC__)
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// Any allocations will block after this call.
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malloc_disable();
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#endif
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bool parsed =
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android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer.data(), buffer.size(), callback);
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#if defined(__BIONIC__)
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malloc_enable();
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#endif
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ASSERT_TRUE(parsed) << "Parsing of data failed:\n" << maps_data;
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ASSERT_EQ(expected_info.size(), num_maps);
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for (size_t i = 0; i < expected_info.size(); i++) {
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const TestMapInfo& expected = expected_info[i];
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const TestMapInfo& saved = saved_info[i];
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EXPECT_EQ(expected.start, saved.start);
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EXPECT_EQ(expected.end, saved.end);
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EXPECT_EQ(expected.flags, saved.flags);
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EXPECT_EQ(expected.pgoff, saved.pgoff);
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EXPECT_EQ(expected.inode, saved.inode);
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EXPECT_STREQ(expected.name, saved.name);
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EXPECT_EQ(expected.isShared, saved.isShared);
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}
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}
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TEST(process_map, ReadMapFileAsyncSafe_invalid) {
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std::vector<TestMapInfo> expected_info;
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VerifyReadMapFileAsyncSafe("12c00000-2ac00000", expected_info);
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}
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TEST(process_map, ReadMapFileAsyncSafe_single) {
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std::vector<TestMapInfo> expected_info;
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expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643,
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"/lib/fake.so", false);
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VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so",
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expected_info);
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}
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TEST(process_map, ReadMapFileAsyncSafe_single_with_newline) {
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std::vector<TestMapInfo> expected_info;
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expected_info.emplace_back(0x12c00000, 0x2ac00000, PROT_READ | PROT_WRITE, 0x100, 10267643,
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"/lib/fake.so", false);
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VerifyReadMapFileAsyncSafe("12c00000-2ac00000 rw-p 00000100 00:05 10267643 /lib/fake.so\n",
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expected_info);
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}
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TEST(process_map, ReadMapFileAsyncSafe_single_no_library) {
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std::vector<TestMapInfo> expected_info;
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expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 0xb00, 101, "",
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false);
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VerifyReadMapFileAsyncSafe("a0000-c0000 rwxp 00000b00 00:05 101", expected_info);
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}
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TEST(process_map, ReadMapFileAsyncSafe_multiple) {
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std::vector<TestMapInfo> expected_info;
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expected_info.emplace_back(0xa0000, 0xc0000, PROT_READ | PROT_WRITE | PROT_EXEC, 1, 100, "",
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false);
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expected_info.emplace_back(0xd0000, 0xe0000, PROT_READ, 2, 101, "/lib/libsomething1.so", false);
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expected_info.emplace_back(0xf0000, 0x100000, PROT_WRITE, 3, 102, "/lib/libsomething2.so", false);
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expected_info.emplace_back(0x110000, 0x120000, PROT_EXEC, 4, 103, "[anon:something or another]",
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false);
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expected_info.emplace_back(0x130000, 0x140000, PROT_READ, 5, 104, "/lib/libsomething3.so", true);
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std::string map_data =
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"0a0000-0c0000 rwxp 00000001 00:05 100\n"
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"0d0000-0e0000 r--p 00000002 00:05 101 /lib/libsomething1.so\n"
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"0f0000-100000 -w-p 00000003 00:05 102 /lib/libsomething2.so\n"
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"110000-120000 --xp 00000004 00:05 103 [anon:something or another]\n"
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"130000-140000 r--s 00000005 00:05 104 /lib/libsomething3.so\n";
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VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
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}
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TEST(process_map, ReadMapFileAsyncSafe_multiple_reads) {
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std::vector<TestMapInfo> expected_info;
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std::string map_data;
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uint64_t start = 0xa0000;
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for (size_t i = 0; i < 10000; i++) {
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map_data += android::base::StringPrintf("%" PRIx64 "-%" PRIx64 " r--p %zx 01:20 %zu fake.so\n",
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start, start + 0x1000, i, 1000 + i);
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expected_info.emplace_back(start, start + 0x1000, PROT_READ, i, 1000 + i, "fake.so", false);
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}
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VerifyReadMapFileAsyncSafe(map_data.c_str(), expected_info);
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}
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TEST(process_map, ReadMapFileAsyncSafe_buffer_nullptr) {
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size_t num_calls = 0;
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auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; };
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#if defined(__BIONIC__)
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// Any allocations will block after this call.
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malloc_disable();
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#endif
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bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", nullptr, 10, callback);
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#if defined(__BIONIC__)
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malloc_enable();
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#endif
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ASSERT_FALSE(parsed);
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EXPECT_EQ(0UL, num_calls);
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}
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TEST(process_map, ReadMapFileAsyncSafe_buffer_size_zero) {
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size_t num_calls = 0;
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auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; };
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#if defined(__BIONIC__)
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// Any allocations will block after this call.
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malloc_disable();
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#endif
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char buffer[10];
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bool parsed = android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, 0, callback);
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#if defined(__BIONIC__)
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malloc_enable();
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#endif
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ASSERT_FALSE(parsed);
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EXPECT_EQ(0UL, num_calls);
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}
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TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_no_calls) {
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size_t num_calls = 0;
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auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; };
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#if defined(__BIONIC__)
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// Any allocations will block after this call.
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malloc_disable();
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#endif
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char buffer[10];
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bool parsed =
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android::procinfo::ReadMapFileAsyncSafe("/proc/self/maps", buffer, sizeof(buffer), callback);
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#if defined(__BIONIC__)
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malloc_enable();
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#endif
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ASSERT_FALSE(parsed);
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EXPECT_EQ(0UL, num_calls);
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}
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TEST(process_map, ReadMapFileAsyncSafe_buffer_too_small_could_parse) {
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TemporaryFile tf;
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ASSERT_TRUE(android::base::WriteStringToFd(
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"0a0000-0c0000 rwxp 00000001 00:05 100 /fake/lib.so\n", tf.fd));
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size_t num_calls = 0;
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auto callback = [&](const android::procinfo::MapInfo&) { num_calls++; };
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#if defined(__BIONIC__)
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// Any allocations will block after this call.
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malloc_disable();
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#endif
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char buffer[39];
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bool parsed = android::procinfo::ReadMapFileAsyncSafe(tf.path, buffer, sizeof(buffer), callback);
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#if defined(__BIONIC__)
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malloc_enable();
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#endif
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ASSERT_FALSE(parsed);
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EXPECT_EQ(0UL, num_calls);
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}
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