edccd84763
- Rewrite some of the UnwindTest tests to properly wait for the process to be ready. - Add a TestScopedPidReaper to make sure that fork process get killed even if the test fails. Add this to all tests that fail. - Create a quiesce function to be used by all of the tests that will wait after attaching to a process. Bug: 65287279 Test: Ran unit tests on hikey960 board and on host repeatedly. Change-Id: I57084120396f34d8dfb852f3d814bef2056f1b54
149 lines
3.7 KiB
C++
149 lines
3.7 KiB
C++
/*
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* Copyright (C) 2016 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 <errno.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/ptrace.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <vector>
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#include <android-base/test_utils.h>
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#include <android-base/file.h>
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#include <gtest/gtest.h>
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#include <unwindstack/Memory.h>
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#include "MemoryFake.h"
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#include "TestUtils.h"
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namespace unwindstack {
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class MemoryRemoteTest : public ::testing::Test {
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protected:
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static bool Attach(pid_t pid) {
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if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {
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return false;
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}
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return TestQuiescePid(pid);
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}
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static bool Detach(pid_t pid) {
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return ptrace(PTRACE_DETACH, pid, 0, 0) == 0;
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}
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static constexpr size_t NS_PER_SEC = 1000000000ULL;
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};
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TEST_F(MemoryRemoteTest, read) {
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std::vector<uint8_t> src(1024);
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memset(src.data(), 0x4c, 1024);
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pid_t pid;
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if ((pid = fork()) == 0) {
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while (true);
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exit(1);
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}
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ASSERT_LT(0, pid);
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TestScopedPidReaper reap(pid);
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ASSERT_TRUE(Attach(pid));
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MemoryRemote remote(pid);
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std::vector<uint8_t> dst(1024);
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ASSERT_TRUE(remote.Read(reinterpret_cast<uint64_t>(src.data()), dst.data(), 1024));
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for (size_t i = 0; i < 1024; i++) {
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ASSERT_EQ(0x4cU, dst[i]) << "Failed at byte " << i;
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}
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ASSERT_TRUE(Detach(pid));
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}
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TEST_F(MemoryRemoteTest, read_fail) {
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int pagesize = getpagesize();
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void* src = mmap(nullptr, pagesize * 2, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,-1, 0);
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memset(src, 0x4c, pagesize * 2);
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ASSERT_NE(MAP_FAILED, src);
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// Put a hole right after the first page.
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ASSERT_EQ(0, munmap(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(src) + pagesize),
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pagesize));
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pid_t pid;
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if ((pid = fork()) == 0) {
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while (true);
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exit(1);
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}
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ASSERT_LT(0, pid);
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TestScopedPidReaper reap(pid);
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ASSERT_TRUE(Attach(pid));
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MemoryRemote remote(pid);
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std::vector<uint8_t> dst(pagesize);
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ASSERT_TRUE(remote.Read(reinterpret_cast<uint64_t>(src), dst.data(), pagesize));
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for (size_t i = 0; i < 1024; i++) {
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ASSERT_EQ(0x4cU, dst[i]) << "Failed at byte " << i;
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}
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ASSERT_FALSE(remote.Read(reinterpret_cast<uint64_t>(src) + pagesize, dst.data(), 1));
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ASSERT_TRUE(remote.Read(reinterpret_cast<uint64_t>(src) + pagesize - 1, dst.data(), 1));
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ASSERT_FALSE(remote.Read(reinterpret_cast<uint64_t>(src) + pagesize - 4, dst.data(), 8));
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// Check overflow condition is caught properly.
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ASSERT_FALSE(remote.Read(UINT64_MAX - 100, dst.data(), 200));
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ASSERT_EQ(0, munmap(src, pagesize));
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ASSERT_TRUE(Detach(pid));
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}
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TEST_F(MemoryRemoteTest, read_overflow) {
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MemoryFakeRemote remote;
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// Check overflow condition is caught properly.
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std::vector<uint8_t> dst(200);
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ASSERT_FALSE(remote.Read(UINT64_MAX - 100, dst.data(), 200));
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}
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TEST_F(MemoryRemoteTest, read_illegal) {
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pid_t pid;
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if ((pid = fork()) == 0) {
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while (true);
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exit(1);
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}
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ASSERT_LT(0, pid);
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TestScopedPidReaper reap(pid);
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ASSERT_TRUE(Attach(pid));
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MemoryRemote remote(pid);
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std::vector<uint8_t> dst(100);
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ASSERT_FALSE(remote.Read(0, dst.data(), 1));
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ASSERT_FALSE(remote.Read(0, dst.data(), 100));
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ASSERT_TRUE(Detach(pid));
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}
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} // namespace unwindstack
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