Daniel Erat | b8cf949 | 2015-07-06 13:18:13 -0600 | [diff] [blame^] | 1 | // Copyright (c) 2012 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 | #define _CRT_SECURE_NO_WARNINGS |
| 6 | |
| 7 | #include <limits> |
| 8 | |
| 9 | #include "base/command_line.h" |
| 10 | #include "base/debug/alias.h" |
| 11 | #include "base/debug/stack_trace.h" |
| 12 | #include "base/files/file_path.h" |
| 13 | #include "base/files/file_util.h" |
| 14 | #include "base/files/scoped_file.h" |
| 15 | #include "base/logging.h" |
| 16 | #include "base/memory/scoped_ptr.h" |
| 17 | #include "base/path_service.h" |
| 18 | #include "base/posix/eintr_wrapper.h" |
| 19 | #include "base/process/kill.h" |
| 20 | #include "base/process/launch.h" |
| 21 | #include "base/process/memory.h" |
| 22 | #include "base/process/process.h" |
| 23 | #include "base/process/process_metrics.h" |
| 24 | #include "base/strings/string_number_conversions.h" |
| 25 | #include "base/strings/utf_string_conversions.h" |
| 26 | #include "base/synchronization/waitable_event.h" |
| 27 | #include "base/test/multiprocess_test.h" |
| 28 | #include "base/test/test_timeouts.h" |
| 29 | #include "base/third_party/dynamic_annotations/dynamic_annotations.h" |
| 30 | #include "base/threading/platform_thread.h" |
| 31 | #include "base/threading/thread.h" |
| 32 | #include "build/build_config.h" |
| 33 | #include "testing/gtest/include/gtest/gtest.h" |
| 34 | #include "testing/multiprocess_func_list.h" |
| 35 | |
| 36 | #if defined(OS_LINUX) |
| 37 | #include <malloc.h> |
| 38 | #include <sched.h> |
| 39 | #include <sys/syscall.h> |
| 40 | #endif |
| 41 | #if defined(OS_POSIX) |
| 42 | #include <dlfcn.h> |
| 43 | #include <errno.h> |
| 44 | #include <fcntl.h> |
| 45 | #include <sched.h> |
| 46 | #include <signal.h> |
| 47 | #include <sys/resource.h> |
| 48 | #include <sys/socket.h> |
| 49 | #include <sys/types.h> |
| 50 | #include <sys/wait.h> |
| 51 | #include <unistd.h> |
| 52 | #endif |
| 53 | #if defined(OS_WIN) |
| 54 | #include <windows.h> |
| 55 | #include "base/win/windows_version.h" |
| 56 | #endif |
| 57 | #if defined(OS_MACOSX) |
| 58 | #include <mach/vm_param.h> |
| 59 | #include <malloc/malloc.h> |
| 60 | #include "base/mac/mac_util.h" |
| 61 | #endif |
| 62 | |
| 63 | using base::FilePath; |
| 64 | |
| 65 | namespace { |
| 66 | |
| 67 | #if defined(OS_ANDROID) |
| 68 | const char kShellPath[] = "/system/bin/sh"; |
| 69 | const char kPosixShell[] = "sh"; |
| 70 | #else |
| 71 | const char kShellPath[] = "/bin/sh"; |
| 72 | const char kPosixShell[] = "bash"; |
| 73 | #endif |
| 74 | |
| 75 | const char kSignalFileSlow[] = "SlowChildProcess.die"; |
| 76 | const char kSignalFileKill[] = "KilledChildProcess.die"; |
| 77 | |
| 78 | #if defined(OS_POSIX) |
| 79 | const char kSignalFileTerm[] = "TerminatedChildProcess.die"; |
| 80 | #endif |
| 81 | |
| 82 | #if defined(OS_WIN) |
| 83 | const int kExpectedStillRunningExitCode = 0x102; |
| 84 | const int kExpectedKilledExitCode = 1; |
| 85 | #else |
| 86 | const int kExpectedStillRunningExitCode = 0; |
| 87 | #endif |
| 88 | |
| 89 | // Sleeps until file filename is created. |
| 90 | void WaitToDie(const char* filename) { |
| 91 | FILE* fp; |
| 92 | do { |
| 93 | base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(10)); |
| 94 | fp = fopen(filename, "r"); |
| 95 | } while (!fp); |
| 96 | fclose(fp); |
| 97 | } |
| 98 | |
| 99 | // Signals children they should die now. |
| 100 | void SignalChildren(const char* filename) { |
| 101 | FILE* fp = fopen(filename, "w"); |
| 102 | fclose(fp); |
| 103 | } |
| 104 | |
| 105 | // Using a pipe to the child to wait for an event was considered, but |
| 106 | // there were cases in the past where pipes caused problems (other |
| 107 | // libraries closing the fds, child deadlocking). This is a simple |
| 108 | // case, so it's not worth the risk. Using wait loops is discouraged |
| 109 | // in most instances. |
| 110 | base::TerminationStatus WaitForChildTermination(base::ProcessHandle handle, |
| 111 | int* exit_code) { |
| 112 | // Now we wait until the result is something other than STILL_RUNNING. |
| 113 | base::TerminationStatus status = base::TERMINATION_STATUS_STILL_RUNNING; |
| 114 | const base::TimeDelta kInterval = base::TimeDelta::FromMilliseconds(20); |
| 115 | base::TimeDelta waited; |
| 116 | do { |
| 117 | status = base::GetTerminationStatus(handle, exit_code); |
| 118 | base::PlatformThread::Sleep(kInterval); |
| 119 | waited += kInterval; |
| 120 | } while (status == base::TERMINATION_STATUS_STILL_RUNNING && |
| 121 | waited < TestTimeouts::action_max_timeout()); |
| 122 | |
| 123 | return status; |
| 124 | } |
| 125 | |
| 126 | } // namespace |
| 127 | |
| 128 | class ProcessUtilTest : public base::MultiProcessTest { |
| 129 | public: |
| 130 | #if defined(OS_POSIX) |
| 131 | // Spawn a child process that counts how many file descriptors are open. |
| 132 | int CountOpenFDsInChild(); |
| 133 | #endif |
| 134 | // Converts the filename to a platform specific filepath. |
| 135 | // On Android files can not be created in arbitrary directories. |
| 136 | static std::string GetSignalFilePath(const char* filename); |
| 137 | }; |
| 138 | |
| 139 | std::string ProcessUtilTest::GetSignalFilePath(const char* filename) { |
| 140 | #if !defined(OS_ANDROID) |
| 141 | return filename; |
| 142 | #else |
| 143 | FilePath tmp_dir; |
| 144 | PathService::Get(base::DIR_CACHE, &tmp_dir); |
| 145 | tmp_dir = tmp_dir.Append(filename); |
| 146 | return tmp_dir.value(); |
| 147 | #endif |
| 148 | } |
| 149 | |
| 150 | MULTIPROCESS_TEST_MAIN(SimpleChildProcess) { |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | // TODO(viettrungluu): This should be in a "MultiProcessTestTest". |
| 155 | TEST_F(ProcessUtilTest, SpawnChild) { |
| 156 | base::Process process = SpawnChild("SimpleChildProcess"); |
| 157 | ASSERT_TRUE(process.IsValid()); |
| 158 | int exit_code; |
| 159 | EXPECT_TRUE(process.WaitForExitWithTimeout( |
| 160 | TestTimeouts::action_max_timeout(), &exit_code)); |
| 161 | } |
| 162 | |
| 163 | MULTIPROCESS_TEST_MAIN(SlowChildProcess) { |
| 164 | WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileSlow).c_str()); |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | TEST_F(ProcessUtilTest, KillSlowChild) { |
| 169 | const std::string signal_file = |
| 170 | ProcessUtilTest::GetSignalFilePath(kSignalFileSlow); |
| 171 | remove(signal_file.c_str()); |
| 172 | base::Process process = SpawnChild("SlowChildProcess"); |
| 173 | ASSERT_TRUE(process.IsValid()); |
| 174 | SignalChildren(signal_file.c_str()); |
| 175 | int exit_code; |
| 176 | EXPECT_TRUE(process.WaitForExitWithTimeout( |
| 177 | TestTimeouts::action_max_timeout(), &exit_code)); |
| 178 | remove(signal_file.c_str()); |
| 179 | } |
| 180 | |
| 181 | // Times out on Linux and Win, flakes on other platforms, http://crbug.com/95058 |
| 182 | TEST_F(ProcessUtilTest, DISABLED_GetTerminationStatusExit) { |
| 183 | const std::string signal_file = |
| 184 | ProcessUtilTest::GetSignalFilePath(kSignalFileSlow); |
| 185 | remove(signal_file.c_str()); |
| 186 | base::Process process = SpawnChild("SlowChildProcess"); |
| 187 | ASSERT_TRUE(process.IsValid()); |
| 188 | |
| 189 | int exit_code = 42; |
| 190 | EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, |
| 191 | base::GetTerminationStatus(process.Handle(), &exit_code)); |
| 192 | EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); |
| 193 | |
| 194 | SignalChildren(signal_file.c_str()); |
| 195 | exit_code = 42; |
| 196 | base::TerminationStatus status = |
| 197 | WaitForChildTermination(process.Handle(), &exit_code); |
| 198 | EXPECT_EQ(base::TERMINATION_STATUS_NORMAL_TERMINATION, status); |
| 199 | EXPECT_EQ(0, exit_code); |
| 200 | remove(signal_file.c_str()); |
| 201 | } |
| 202 | |
| 203 | #if defined(OS_WIN) |
| 204 | // TODO(cpu): figure out how to test this in other platforms. |
| 205 | TEST_F(ProcessUtilTest, GetProcId) { |
| 206 | base::ProcessId id1 = base::GetProcId(GetCurrentProcess()); |
| 207 | EXPECT_NE(0ul, id1); |
| 208 | base::Process process = SpawnChild("SimpleChildProcess"); |
| 209 | ASSERT_TRUE(process.IsValid()); |
| 210 | base::ProcessId id2 = process.Pid(); |
| 211 | EXPECT_NE(0ul, id2); |
| 212 | EXPECT_NE(id1, id2); |
| 213 | } |
| 214 | #endif |
| 215 | |
| 216 | #if !defined(OS_MACOSX) |
| 217 | // This test is disabled on Mac, since it's flaky due to ReportCrash |
| 218 | // taking a variable amount of time to parse and load the debug and |
| 219 | // symbol data for this unit test's executable before firing the |
| 220 | // signal handler. |
| 221 | // |
| 222 | // TODO(gspencer): turn this test process into a very small program |
| 223 | // with no symbols (instead of using the multiprocess testing |
| 224 | // framework) to reduce the ReportCrash overhead. |
| 225 | const char kSignalFileCrash[] = "CrashingChildProcess.die"; |
| 226 | |
| 227 | MULTIPROCESS_TEST_MAIN(CrashingChildProcess) { |
| 228 | WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileCrash).c_str()); |
| 229 | #if defined(OS_POSIX) |
| 230 | // Have to disable to signal handler for segv so we can get a crash |
| 231 | // instead of an abnormal termination through the crash dump handler. |
| 232 | ::signal(SIGSEGV, SIG_DFL); |
| 233 | #endif |
| 234 | // Make this process have a segmentation fault. |
| 235 | volatile int* oops = NULL; |
| 236 | *oops = 0xDEAD; |
| 237 | return 1; |
| 238 | } |
| 239 | |
| 240 | // This test intentionally crashes, so we don't need to run it under |
| 241 | // AddressSanitizer. |
| 242 | #if defined(ADDRESS_SANITIZER) || defined(SYZYASAN) |
| 243 | #define MAYBE_GetTerminationStatusCrash DISABLED_GetTerminationStatusCrash |
| 244 | #else |
| 245 | #define MAYBE_GetTerminationStatusCrash GetTerminationStatusCrash |
| 246 | #endif |
| 247 | TEST_F(ProcessUtilTest, MAYBE_GetTerminationStatusCrash) { |
| 248 | const std::string signal_file = |
| 249 | ProcessUtilTest::GetSignalFilePath(kSignalFileCrash); |
| 250 | remove(signal_file.c_str()); |
| 251 | base::Process process = SpawnChild("CrashingChildProcess"); |
| 252 | ASSERT_TRUE(process.IsValid()); |
| 253 | |
| 254 | int exit_code = 42; |
| 255 | EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, |
| 256 | base::GetTerminationStatus(process.Handle(), &exit_code)); |
| 257 | EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); |
| 258 | |
| 259 | SignalChildren(signal_file.c_str()); |
| 260 | exit_code = 42; |
| 261 | base::TerminationStatus status = |
| 262 | WaitForChildTermination(process.Handle(), &exit_code); |
| 263 | EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_CRASHED, status); |
| 264 | |
| 265 | #if defined(OS_WIN) |
| 266 | EXPECT_EQ(0xc0000005, exit_code); |
| 267 | #elif defined(OS_POSIX) |
| 268 | int signaled = WIFSIGNALED(exit_code); |
| 269 | EXPECT_NE(0, signaled); |
| 270 | int signal = WTERMSIG(exit_code); |
| 271 | EXPECT_EQ(SIGSEGV, signal); |
| 272 | #endif |
| 273 | |
| 274 | // Reset signal handlers back to "normal". |
| 275 | base::debug::EnableInProcessStackDumping(); |
| 276 | remove(signal_file.c_str()); |
| 277 | } |
| 278 | #endif // !defined(OS_MACOSX) |
| 279 | |
| 280 | MULTIPROCESS_TEST_MAIN(KilledChildProcess) { |
| 281 | WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileKill).c_str()); |
| 282 | #if defined(OS_WIN) |
| 283 | // Kill ourselves. |
| 284 | HANDLE handle = ::OpenProcess(PROCESS_ALL_ACCESS, 0, ::GetCurrentProcessId()); |
| 285 | ::TerminateProcess(handle, kExpectedKilledExitCode); |
| 286 | #elif defined(OS_POSIX) |
| 287 | // Send a SIGKILL to this process, just like the OOM killer would. |
| 288 | ::kill(getpid(), SIGKILL); |
| 289 | #endif |
| 290 | return 1; |
| 291 | } |
| 292 | |
| 293 | #if defined(OS_POSIX) |
| 294 | MULTIPROCESS_TEST_MAIN(TerminatedChildProcess) { |
| 295 | WaitToDie(ProcessUtilTest::GetSignalFilePath(kSignalFileTerm).c_str()); |
| 296 | // Send a SIGTERM to this process. |
| 297 | ::kill(getpid(), SIGTERM); |
| 298 | return 1; |
| 299 | } |
| 300 | #endif |
| 301 | |
| 302 | TEST_F(ProcessUtilTest, GetTerminationStatusSigKill) { |
| 303 | const std::string signal_file = |
| 304 | ProcessUtilTest::GetSignalFilePath(kSignalFileKill); |
| 305 | remove(signal_file.c_str()); |
| 306 | base::Process process = SpawnChild("KilledChildProcess"); |
| 307 | ASSERT_TRUE(process.IsValid()); |
| 308 | |
| 309 | int exit_code = 42; |
| 310 | EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, |
| 311 | base::GetTerminationStatus(process.Handle(), &exit_code)); |
| 312 | EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); |
| 313 | |
| 314 | SignalChildren(signal_file.c_str()); |
| 315 | exit_code = 42; |
| 316 | base::TerminationStatus status = |
| 317 | WaitForChildTermination(process.Handle(), &exit_code); |
| 318 | #if defined(OS_CHROMEOS) |
| 319 | EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_WAS_KILLED_BY_OOM, status); |
| 320 | #else |
| 321 | EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_WAS_KILLED, status); |
| 322 | #endif |
| 323 | |
| 324 | #if defined(OS_WIN) |
| 325 | EXPECT_EQ(kExpectedKilledExitCode, exit_code); |
| 326 | #elif defined(OS_POSIX) |
| 327 | int signaled = WIFSIGNALED(exit_code); |
| 328 | EXPECT_NE(0, signaled); |
| 329 | int signal = WTERMSIG(exit_code); |
| 330 | EXPECT_EQ(SIGKILL, signal); |
| 331 | #endif |
| 332 | remove(signal_file.c_str()); |
| 333 | } |
| 334 | |
| 335 | #if defined(OS_POSIX) |
| 336 | TEST_F(ProcessUtilTest, GetTerminationStatusSigTerm) { |
| 337 | const std::string signal_file = |
| 338 | ProcessUtilTest::GetSignalFilePath(kSignalFileTerm); |
| 339 | remove(signal_file.c_str()); |
| 340 | base::Process process = SpawnChild("TerminatedChildProcess"); |
| 341 | ASSERT_TRUE(process.IsValid()); |
| 342 | |
| 343 | int exit_code = 42; |
| 344 | EXPECT_EQ(base::TERMINATION_STATUS_STILL_RUNNING, |
| 345 | base::GetTerminationStatus(process.Handle(), &exit_code)); |
| 346 | EXPECT_EQ(kExpectedStillRunningExitCode, exit_code); |
| 347 | |
| 348 | SignalChildren(signal_file.c_str()); |
| 349 | exit_code = 42; |
| 350 | base::TerminationStatus status = |
| 351 | WaitForChildTermination(process.Handle(), &exit_code); |
| 352 | EXPECT_EQ(base::TERMINATION_STATUS_PROCESS_WAS_KILLED, status); |
| 353 | |
| 354 | int signaled = WIFSIGNALED(exit_code); |
| 355 | EXPECT_NE(0, signaled); |
| 356 | int signal = WTERMSIG(exit_code); |
| 357 | EXPECT_EQ(SIGTERM, signal); |
| 358 | remove(signal_file.c_str()); |
| 359 | } |
| 360 | #endif |
| 361 | |
| 362 | #if defined(OS_WIN) |
| 363 | // TODO(estade): if possible, port this test. |
| 364 | TEST_F(ProcessUtilTest, GetAppOutput) { |
| 365 | // Let's create a decently long message. |
| 366 | std::string message; |
| 367 | for (int i = 0; i < 1025; i++) { // 1025 so it does not end on a kilo-byte |
| 368 | // boundary. |
| 369 | message += "Hello!"; |
| 370 | } |
| 371 | // cmd.exe's echo always adds a \r\n to its output. |
| 372 | std::string expected(message); |
| 373 | expected += "\r\n"; |
| 374 | |
| 375 | FilePath cmd(L"cmd.exe"); |
| 376 | base::CommandLine cmd_line(cmd); |
| 377 | cmd_line.AppendArg("/c"); |
| 378 | cmd_line.AppendArg("echo " + message + ""); |
| 379 | std::string output; |
| 380 | ASSERT_TRUE(base::GetAppOutput(cmd_line, &output)); |
| 381 | EXPECT_EQ(expected, output); |
| 382 | |
| 383 | // Let's make sure stderr is ignored. |
| 384 | base::CommandLine other_cmd_line(cmd); |
| 385 | other_cmd_line.AppendArg("/c"); |
| 386 | // http://msdn.microsoft.com/library/cc772622.aspx |
| 387 | cmd_line.AppendArg("echo " + message + " >&2"); |
| 388 | output.clear(); |
| 389 | ASSERT_TRUE(base::GetAppOutput(other_cmd_line, &output)); |
| 390 | EXPECT_EQ("", output); |
| 391 | } |
| 392 | |
| 393 | // TODO(estade): if possible, port this test. |
| 394 | TEST_F(ProcessUtilTest, LaunchAsUser) { |
| 395 | base::UserTokenHandle token; |
| 396 | ASSERT_TRUE(OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &token)); |
| 397 | base::LaunchOptions options; |
| 398 | options.as_user = token; |
| 399 | EXPECT_TRUE(base::LaunchProcess(MakeCmdLine("SimpleChildProcess"), |
| 400 | options).IsValid()); |
| 401 | } |
| 402 | |
| 403 | static const char kEventToTriggerHandleSwitch[] = "event-to-trigger-handle"; |
| 404 | |
| 405 | MULTIPROCESS_TEST_MAIN(TriggerEventChildProcess) { |
| 406 | std::string handle_value_string = |
| 407 | base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( |
| 408 | kEventToTriggerHandleSwitch); |
| 409 | CHECK(!handle_value_string.empty()); |
| 410 | |
| 411 | uint64 handle_value_uint64; |
| 412 | CHECK(base::StringToUint64(handle_value_string, &handle_value_uint64)); |
| 413 | // Give ownership of the handle to |event|. |
| 414 | base::WaitableEvent event(base::win::ScopedHandle( |
| 415 | reinterpret_cast<HANDLE>(handle_value_uint64))); |
| 416 | |
| 417 | event.Signal(); |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | TEST_F(ProcessUtilTest, InheritSpecifiedHandles) { |
| 423 | // Manually create the event, so that it can be inheritable. |
| 424 | SECURITY_ATTRIBUTES security_attributes = {}; |
| 425 | security_attributes.nLength = static_cast<DWORD>(sizeof(security_attributes)); |
| 426 | security_attributes.lpSecurityDescriptor = NULL; |
| 427 | security_attributes.bInheritHandle = true; |
| 428 | |
| 429 | // Takes ownership of the event handle. |
| 430 | base::WaitableEvent event(base::win::ScopedHandle( |
| 431 | CreateEvent(&security_attributes, true, false, NULL))); |
| 432 | base::HandlesToInheritVector handles_to_inherit; |
| 433 | handles_to_inherit.push_back(event.handle()); |
| 434 | base::LaunchOptions options; |
| 435 | options.handles_to_inherit = &handles_to_inherit; |
| 436 | |
| 437 | base::CommandLine cmd_line = MakeCmdLine("TriggerEventChildProcess"); |
| 438 | cmd_line.AppendSwitchASCII(kEventToTriggerHandleSwitch, |
| 439 | base::Uint64ToString(reinterpret_cast<uint64>(event.handle()))); |
| 440 | |
| 441 | // This functionality actually requires Vista or later. Make sure that it |
| 442 | // fails properly on XP. |
| 443 | if (base::win::GetVersion() < base::win::VERSION_VISTA) { |
| 444 | EXPECT_FALSE(base::LaunchProcess(cmd_line, options).IsValid()); |
| 445 | return; |
| 446 | } |
| 447 | |
| 448 | // Launch the process and wait for it to trigger the event. |
| 449 | ASSERT_TRUE(base::LaunchProcess(cmd_line, options).IsValid()); |
| 450 | EXPECT_TRUE(event.TimedWait(TestTimeouts::action_max_timeout())); |
| 451 | } |
| 452 | #endif // defined(OS_WIN) |
| 453 | |
| 454 | #if defined(OS_POSIX) |
| 455 | |
| 456 | namespace { |
| 457 | |
| 458 | // Returns the maximum number of files that a process can have open. |
| 459 | // Returns 0 on error. |
| 460 | int GetMaxFilesOpenInProcess() { |
| 461 | struct rlimit rlim; |
| 462 | if (getrlimit(RLIMIT_NOFILE, &rlim) != 0) { |
| 463 | return 0; |
| 464 | } |
| 465 | |
| 466 | // rlim_t is a uint64 - clip to maxint. We do this since FD #s are ints |
| 467 | // which are all 32 bits on the supported platforms. |
| 468 | rlim_t max_int = static_cast<rlim_t>(std::numeric_limits<int32>::max()); |
| 469 | if (rlim.rlim_cur > max_int) { |
| 470 | return max_int; |
| 471 | } |
| 472 | |
| 473 | return rlim.rlim_cur; |
| 474 | } |
| 475 | |
| 476 | const int kChildPipe = 20; // FD # for write end of pipe in child process. |
| 477 | |
| 478 | #if defined(OS_MACOSX) |
| 479 | |
| 480 | // <http://opensource.apple.com/source/xnu/xnu-2422.1.72/bsd/sys/guarded.h> |
| 481 | #if !defined(_GUARDID_T) |
| 482 | #define _GUARDID_T |
| 483 | typedef __uint64_t guardid_t; |
| 484 | #endif // _GUARDID_T |
| 485 | |
| 486 | // From .../MacOSX10.9.sdk/usr/include/sys/syscall.h |
| 487 | #if !defined(SYS_change_fdguard_np) |
| 488 | #define SYS_change_fdguard_np 444 |
| 489 | #endif |
| 490 | |
| 491 | // <http://opensource.apple.com/source/xnu/xnu-2422.1.72/bsd/sys/guarded.h> |
| 492 | #if !defined(GUARD_DUP) |
| 493 | #define GUARD_DUP (1u << 1) |
| 494 | #endif |
| 495 | |
| 496 | // <http://opensource.apple.com/source/xnu/xnu-2422.1.72/bsd/kern/kern_guarded.c?txt> |
| 497 | // |
| 498 | // Atomically replaces |guard|/|guardflags| with |nguard|/|nguardflags| on |fd|. |
| 499 | int change_fdguard_np(int fd, |
| 500 | const guardid_t *guard, u_int guardflags, |
| 501 | const guardid_t *nguard, u_int nguardflags, |
| 502 | int *fdflagsp) { |
| 503 | return syscall(SYS_change_fdguard_np, fd, guard, guardflags, |
| 504 | nguard, nguardflags, fdflagsp); |
| 505 | } |
| 506 | |
| 507 | // Attempt to set a file-descriptor guard on |fd|. In case of success, remove |
| 508 | // it and return |true| to indicate that it can be guarded. Returning |false| |
| 509 | // means either that |fd| is guarded by some other code, or more likely EBADF. |
| 510 | // |
| 511 | // Starting with 10.9, libdispatch began setting GUARD_DUP on a file descriptor. |
| 512 | // Unfortunately, it is spun up as part of +[NSApplication initialize], which is |
| 513 | // not really something that Chromium can avoid using on OSX. See |
| 514 | // <http://crbug.com/338157>. This function allows querying whether the file |
| 515 | // descriptor is guarded before attempting to close it. |
| 516 | bool CanGuardFd(int fd) { |
| 517 | // The syscall is first provided in 10.9/Mavericks. |
| 518 | if (!base::mac::IsOSMavericksOrLater()) |
| 519 | return true; |
| 520 | |
| 521 | // Saves the original flags to reset later. |
| 522 | int original_fdflags = 0; |
| 523 | |
| 524 | // This can be any value at all, it just has to match up between the two |
| 525 | // calls. |
| 526 | const guardid_t kGuard = 15; |
| 527 | |
| 528 | // Attempt to change the guard. This can fail with EBADF if the file |
| 529 | // descriptor is bad, or EINVAL if the fd already has a guard set. |
| 530 | int ret = |
| 531 | change_fdguard_np(fd, NULL, 0, &kGuard, GUARD_DUP, &original_fdflags); |
| 532 | if (ret == -1) |
| 533 | return false; |
| 534 | |
| 535 | // Remove the guard. It should not be possible to fail in removing the guard |
| 536 | // just added. |
| 537 | ret = change_fdguard_np(fd, &kGuard, GUARD_DUP, NULL, 0, &original_fdflags); |
| 538 | DPCHECK(ret == 0); |
| 539 | |
| 540 | return true; |
| 541 | } |
| 542 | #endif // OS_MACOSX |
| 543 | |
| 544 | } // namespace |
| 545 | |
| 546 | MULTIPROCESS_TEST_MAIN(ProcessUtilsLeakFDChildProcess) { |
| 547 | // This child process counts the number of open FDs, it then writes that |
| 548 | // number out to a pipe connected to the parent. |
| 549 | int num_open_files = 0; |
| 550 | int write_pipe = kChildPipe; |
| 551 | int max_files = GetMaxFilesOpenInProcess(); |
| 552 | for (int i = STDERR_FILENO + 1; i < max_files; i++) { |
| 553 | #if defined(OS_MACOSX) |
| 554 | // Ignore guarded or invalid file descriptors. |
| 555 | if (!CanGuardFd(i)) |
| 556 | continue; |
| 557 | #endif |
| 558 | |
| 559 | if (i != kChildPipe) { |
| 560 | int fd; |
| 561 | if ((fd = HANDLE_EINTR(dup(i))) != -1) { |
| 562 | close(fd); |
| 563 | num_open_files += 1; |
| 564 | } |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | int written = HANDLE_EINTR(write(write_pipe, &num_open_files, |
| 569 | sizeof(num_open_files))); |
| 570 | DCHECK_EQ(static_cast<size_t>(written), sizeof(num_open_files)); |
| 571 | int ret = IGNORE_EINTR(close(write_pipe)); |
| 572 | DPCHECK(ret == 0); |
| 573 | |
| 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | int ProcessUtilTest::CountOpenFDsInChild() { |
| 578 | int fds[2]; |
| 579 | if (pipe(fds) < 0) |
| 580 | NOTREACHED(); |
| 581 | |
| 582 | base::FileHandleMappingVector fd_mapping_vec; |
| 583 | fd_mapping_vec.push_back(std::pair<int, int>(fds[1], kChildPipe)); |
| 584 | base::LaunchOptions options; |
| 585 | options.fds_to_remap = &fd_mapping_vec; |
| 586 | base::Process process = |
| 587 | SpawnChildWithOptions("ProcessUtilsLeakFDChildProcess", options); |
| 588 | CHECK(process.IsValid()); |
| 589 | int ret = IGNORE_EINTR(close(fds[1])); |
| 590 | DPCHECK(ret == 0); |
| 591 | |
| 592 | // Read number of open files in client process from pipe; |
| 593 | int num_open_files = -1; |
| 594 | ssize_t bytes_read = |
| 595 | HANDLE_EINTR(read(fds[0], &num_open_files, sizeof(num_open_files))); |
| 596 | CHECK_EQ(bytes_read, static_cast<ssize_t>(sizeof(num_open_files))); |
| 597 | |
| 598 | #if defined(THREAD_SANITIZER) |
| 599 | // Compiler-based ThreadSanitizer makes this test slow. |
| 600 | base::TimeDelta timeout = base::TimeDelta::FromSeconds(3); |
| 601 | #else |
| 602 | base::TimeDelta timeout = base::TimeDelta::FromSeconds(1); |
| 603 | #endif |
| 604 | int exit_code; |
| 605 | CHECK(process.WaitForExitWithTimeout(timeout, &exit_code)); |
| 606 | ret = IGNORE_EINTR(close(fds[0])); |
| 607 | DPCHECK(ret == 0); |
| 608 | |
| 609 | return num_open_files; |
| 610 | } |
| 611 | |
| 612 | #if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) |
| 613 | // ProcessUtilTest.FDRemapping is flaky when ran under xvfb-run on Precise. |
| 614 | // The problem is 100% reproducible with both ASan and TSan. |
| 615 | // See http://crbug.com/136720. |
| 616 | #define MAYBE_FDRemapping DISABLED_FDRemapping |
| 617 | #else |
| 618 | #define MAYBE_FDRemapping FDRemapping |
| 619 | #endif |
| 620 | TEST_F(ProcessUtilTest, MAYBE_FDRemapping) { |
| 621 | int fds_before = CountOpenFDsInChild(); |
| 622 | |
| 623 | // open some dummy fds to make sure they don't propagate over to the |
| 624 | // child process. |
| 625 | int dev_null = open("/dev/null", O_RDONLY); |
| 626 | int sockets[2]; |
| 627 | socketpair(AF_UNIX, SOCK_STREAM, 0, sockets); |
| 628 | |
| 629 | int fds_after = CountOpenFDsInChild(); |
| 630 | |
| 631 | ASSERT_EQ(fds_after, fds_before); |
| 632 | |
| 633 | int ret; |
| 634 | ret = IGNORE_EINTR(close(sockets[0])); |
| 635 | DPCHECK(ret == 0); |
| 636 | ret = IGNORE_EINTR(close(sockets[1])); |
| 637 | DPCHECK(ret == 0); |
| 638 | ret = IGNORE_EINTR(close(dev_null)); |
| 639 | DPCHECK(ret == 0); |
| 640 | } |
| 641 | |
| 642 | namespace { |
| 643 | |
| 644 | std::string TestLaunchProcess(const std::vector<std::string>& args, |
| 645 | const base::EnvironmentMap& env_changes, |
| 646 | const bool clear_environ, |
| 647 | const int clone_flags) { |
| 648 | base::FileHandleMappingVector fds_to_remap; |
| 649 | |
| 650 | int fds[2]; |
| 651 | PCHECK(pipe(fds) == 0); |
| 652 | |
| 653 | fds_to_remap.push_back(std::make_pair(fds[1], 1)); |
| 654 | base::LaunchOptions options; |
| 655 | options.wait = true; |
| 656 | options.environ = env_changes; |
| 657 | options.clear_environ = clear_environ; |
| 658 | options.fds_to_remap = &fds_to_remap; |
| 659 | #if defined(OS_LINUX) |
| 660 | options.clone_flags = clone_flags; |
| 661 | #else |
| 662 | CHECK_EQ(0, clone_flags); |
| 663 | #endif // OS_LINUX |
| 664 | EXPECT_TRUE(base::LaunchProcess(args, options).IsValid()); |
| 665 | PCHECK(IGNORE_EINTR(close(fds[1])) == 0); |
| 666 | |
| 667 | char buf[512]; |
| 668 | const ssize_t n = HANDLE_EINTR(read(fds[0], buf, sizeof(buf))); |
| 669 | |
| 670 | PCHECK(IGNORE_EINTR(close(fds[0])) == 0); |
| 671 | |
| 672 | return std::string(buf, n); |
| 673 | } |
| 674 | |
| 675 | const char kLargeString[] = |
| 676 | "0123456789012345678901234567890123456789012345678901234567890123456789" |
| 677 | "0123456789012345678901234567890123456789012345678901234567890123456789" |
| 678 | "0123456789012345678901234567890123456789012345678901234567890123456789" |
| 679 | "0123456789012345678901234567890123456789012345678901234567890123456789" |
| 680 | "0123456789012345678901234567890123456789012345678901234567890123456789" |
| 681 | "0123456789012345678901234567890123456789012345678901234567890123456789" |
| 682 | "0123456789012345678901234567890123456789012345678901234567890123456789"; |
| 683 | |
| 684 | } // namespace |
| 685 | |
| 686 | TEST_F(ProcessUtilTest, LaunchProcess) { |
| 687 | base::EnvironmentMap env_changes; |
| 688 | std::vector<std::string> echo_base_test; |
| 689 | echo_base_test.push_back(kPosixShell); |
| 690 | echo_base_test.push_back("-c"); |
| 691 | echo_base_test.push_back("echo $BASE_TEST"); |
| 692 | |
| 693 | std::vector<std::string> print_env; |
| 694 | print_env.push_back("/usr/bin/env"); |
| 695 | const int no_clone_flags = 0; |
| 696 | const bool no_clear_environ = false; |
| 697 | |
| 698 | const char kBaseTest[] = "BASE_TEST"; |
| 699 | |
| 700 | env_changes[kBaseTest] = "bar"; |
| 701 | EXPECT_EQ("bar\n", |
| 702 | TestLaunchProcess( |
| 703 | echo_base_test, env_changes, no_clear_environ, no_clone_flags)); |
| 704 | env_changes.clear(); |
| 705 | |
| 706 | EXPECT_EQ(0, setenv(kBaseTest, "testing", 1 /* override */)); |
| 707 | EXPECT_EQ("testing\n", |
| 708 | TestLaunchProcess( |
| 709 | echo_base_test, env_changes, no_clear_environ, no_clone_flags)); |
| 710 | |
| 711 | env_changes[kBaseTest] = std::string(); |
| 712 | EXPECT_EQ("\n", |
| 713 | TestLaunchProcess( |
| 714 | echo_base_test, env_changes, no_clear_environ, no_clone_flags)); |
| 715 | |
| 716 | env_changes[kBaseTest] = "foo"; |
| 717 | EXPECT_EQ("foo\n", |
| 718 | TestLaunchProcess( |
| 719 | echo_base_test, env_changes, no_clear_environ, no_clone_flags)); |
| 720 | |
| 721 | env_changes.clear(); |
| 722 | EXPECT_EQ(0, setenv(kBaseTest, kLargeString, 1 /* override */)); |
| 723 | EXPECT_EQ(std::string(kLargeString) + "\n", |
| 724 | TestLaunchProcess( |
| 725 | echo_base_test, env_changes, no_clear_environ, no_clone_flags)); |
| 726 | |
| 727 | env_changes[kBaseTest] = "wibble"; |
| 728 | EXPECT_EQ("wibble\n", |
| 729 | TestLaunchProcess( |
| 730 | echo_base_test, env_changes, no_clear_environ, no_clone_flags)); |
| 731 | |
| 732 | #if defined(OS_LINUX) |
| 733 | // Test a non-trival value for clone_flags. |
| 734 | // Don't test on Valgrind as it has limited support for clone(). |
| 735 | if (!RunningOnValgrind()) { |
| 736 | EXPECT_EQ("wibble\n", TestLaunchProcess(echo_base_test, env_changes, |
| 737 | no_clear_environ, CLONE_FS)); |
| 738 | } |
| 739 | |
| 740 | EXPECT_EQ( |
| 741 | "BASE_TEST=wibble\n", |
| 742 | TestLaunchProcess( |
| 743 | print_env, env_changes, true /* clear_environ */, no_clone_flags)); |
| 744 | env_changes.clear(); |
| 745 | EXPECT_EQ( |
| 746 | "", |
| 747 | TestLaunchProcess( |
| 748 | print_env, env_changes, true /* clear_environ */, no_clone_flags)); |
| 749 | #endif |
| 750 | } |
| 751 | |
| 752 | TEST_F(ProcessUtilTest, GetAppOutput) { |
| 753 | std::string output; |
| 754 | |
| 755 | #if defined(OS_ANDROID) |
| 756 | std::vector<std::string> argv; |
| 757 | argv.push_back("sh"); // Instead of /bin/sh, force path search to find it. |
| 758 | argv.push_back("-c"); |
| 759 | |
| 760 | argv.push_back("exit 0"); |
| 761 | EXPECT_TRUE(base::GetAppOutput(base::CommandLine(argv), &output)); |
| 762 | EXPECT_STREQ("", output.c_str()); |
| 763 | |
| 764 | argv[2] = "exit 1"; |
| 765 | EXPECT_FALSE(base::GetAppOutput(base::CommandLine(argv), &output)); |
| 766 | EXPECT_STREQ("", output.c_str()); |
| 767 | |
| 768 | argv[2] = "echo foobar42"; |
| 769 | EXPECT_TRUE(base::GetAppOutput(base::CommandLine(argv), &output)); |
| 770 | EXPECT_STREQ("foobar42\n", output.c_str()); |
| 771 | #else |
| 772 | EXPECT_TRUE(base::GetAppOutput(base::CommandLine(FilePath("true")), |
| 773 | &output)); |
| 774 | EXPECT_STREQ("", output.c_str()); |
| 775 | |
| 776 | EXPECT_FALSE(base::GetAppOutput(base::CommandLine(FilePath("false")), |
| 777 | &output)); |
| 778 | |
| 779 | std::vector<std::string> argv; |
| 780 | argv.push_back("/bin/echo"); |
| 781 | argv.push_back("-n"); |
| 782 | argv.push_back("foobar42"); |
| 783 | EXPECT_TRUE(base::GetAppOutput(base::CommandLine(argv), &output)); |
| 784 | EXPECT_STREQ("foobar42", output.c_str()); |
| 785 | #endif // defined(OS_ANDROID) |
| 786 | } |
| 787 | |
| 788 | // Flakes on Android, crbug.com/375840 |
| 789 | #if defined(OS_ANDROID) |
| 790 | #define MAYBE_GetAppOutputRestricted DISABLED_GetAppOutputRestricted |
| 791 | #else |
| 792 | #define MAYBE_GetAppOutputRestricted GetAppOutputRestricted |
| 793 | #endif |
| 794 | TEST_F(ProcessUtilTest, MAYBE_GetAppOutputRestricted) { |
| 795 | // Unfortunately, since we can't rely on the path, we need to know where |
| 796 | // everything is. So let's use /bin/sh, which is on every POSIX system, and |
| 797 | // its built-ins. |
| 798 | std::vector<std::string> argv; |
| 799 | argv.push_back(std::string(kShellPath)); // argv[0] |
| 800 | argv.push_back("-c"); // argv[1] |
| 801 | |
| 802 | // On success, should set |output|. We use |/bin/sh -c 'exit 0'| instead of |
| 803 | // |true| since the location of the latter may be |/bin| or |/usr/bin| (and we |
| 804 | // need absolute paths). |
| 805 | argv.push_back("exit 0"); // argv[2]; equivalent to "true" |
| 806 | std::string output = "abc"; |
| 807 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 808 | 100)); |
| 809 | EXPECT_STREQ("", output.c_str()); |
| 810 | |
| 811 | argv[2] = "exit 1"; // equivalent to "false" |
| 812 | output = "before"; |
| 813 | EXPECT_FALSE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 814 | 100)); |
| 815 | EXPECT_STREQ("", output.c_str()); |
| 816 | |
| 817 | // Amount of output exactly equal to space allowed. |
| 818 | argv[2] = "echo 123456789"; // (the sh built-in doesn't take "-n") |
| 819 | output.clear(); |
| 820 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 821 | 10)); |
| 822 | EXPECT_STREQ("123456789\n", output.c_str()); |
| 823 | |
| 824 | // Amount of output greater than space allowed. |
| 825 | output.clear(); |
| 826 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 827 | 5)); |
| 828 | EXPECT_STREQ("12345", output.c_str()); |
| 829 | |
| 830 | // Amount of output less than space allowed. |
| 831 | output.clear(); |
| 832 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 833 | 15)); |
| 834 | EXPECT_STREQ("123456789\n", output.c_str()); |
| 835 | |
| 836 | // Zero space allowed. |
| 837 | output = "abc"; |
| 838 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 839 | 0)); |
| 840 | EXPECT_STREQ("", output.c_str()); |
| 841 | } |
| 842 | |
| 843 | #if !defined(OS_MACOSX) && !defined(OS_OPENBSD) |
| 844 | // TODO(benwells): GetAppOutputRestricted should terminate applications |
| 845 | // with SIGPIPE when we have enough output. http://crbug.com/88502 |
| 846 | TEST_F(ProcessUtilTest, GetAppOutputRestrictedSIGPIPE) { |
| 847 | std::vector<std::string> argv; |
| 848 | std::string output; |
| 849 | |
| 850 | argv.push_back(std::string(kShellPath)); // argv[0] |
| 851 | argv.push_back("-c"); |
| 852 | #if defined(OS_ANDROID) |
| 853 | argv.push_back("while echo 12345678901234567890; do :; done"); |
| 854 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 855 | 10)); |
| 856 | EXPECT_STREQ("1234567890", output.c_str()); |
| 857 | #else |
| 858 | argv.push_back("yes"); |
| 859 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 860 | 10)); |
| 861 | EXPECT_STREQ("y\ny\ny\ny\ny\n", output.c_str()); |
| 862 | #endif |
| 863 | } |
| 864 | #endif |
| 865 | |
| 866 | #if defined(ADDRESS_SANITIZER) && defined(OS_MACOSX) && \ |
| 867 | defined(ARCH_CPU_64_BITS) |
| 868 | // Times out under AddressSanitizer on 64-bit OS X, see |
| 869 | // http://crbug.com/298197. |
| 870 | #define MAYBE_GetAppOutputRestrictedNoZombies \ |
| 871 | DISABLED_GetAppOutputRestrictedNoZombies |
| 872 | #else |
| 873 | #define MAYBE_GetAppOutputRestrictedNoZombies GetAppOutputRestrictedNoZombies |
| 874 | #endif |
| 875 | TEST_F(ProcessUtilTest, MAYBE_GetAppOutputRestrictedNoZombies) { |
| 876 | std::vector<std::string> argv; |
| 877 | |
| 878 | argv.push_back(std::string(kShellPath)); // argv[0] |
| 879 | argv.push_back("-c"); // argv[1] |
| 880 | argv.push_back("echo 123456789012345678901234567890"); // argv[2] |
| 881 | |
| 882 | // Run |GetAppOutputRestricted()| 300 (> default per-user processes on Mac OS |
| 883 | // 10.5) times with an output buffer big enough to capture all output. |
| 884 | for (int i = 0; i < 300; i++) { |
| 885 | std::string output; |
| 886 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 887 | 100)); |
| 888 | EXPECT_STREQ("123456789012345678901234567890\n", output.c_str()); |
| 889 | } |
| 890 | |
| 891 | // Ditto, but with an output buffer too small to capture all output. |
| 892 | for (int i = 0; i < 300; i++) { |
| 893 | std::string output; |
| 894 | EXPECT_TRUE(base::GetAppOutputRestricted(base::CommandLine(argv), &output, |
| 895 | 10)); |
| 896 | EXPECT_STREQ("1234567890", output.c_str()); |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | TEST_F(ProcessUtilTest, GetAppOutputWithExitCode) { |
| 901 | // Test getting output from a successful application. |
| 902 | std::vector<std::string> argv; |
| 903 | std::string output; |
| 904 | int exit_code; |
| 905 | argv.push_back(std::string(kShellPath)); // argv[0] |
| 906 | argv.push_back("-c"); // argv[1] |
| 907 | argv.push_back("echo foo"); // argv[2]; |
| 908 | EXPECT_TRUE(base::GetAppOutputWithExitCode(base::CommandLine(argv), &output, |
| 909 | &exit_code)); |
| 910 | EXPECT_STREQ("foo\n", output.c_str()); |
| 911 | EXPECT_EQ(exit_code, 0); |
| 912 | |
| 913 | // Test getting output from an application which fails with a specific exit |
| 914 | // code. |
| 915 | output.clear(); |
| 916 | argv[2] = "echo foo; exit 2"; |
| 917 | EXPECT_TRUE(base::GetAppOutputWithExitCode(base::CommandLine(argv), &output, |
| 918 | &exit_code)); |
| 919 | EXPECT_STREQ("foo\n", output.c_str()); |
| 920 | EXPECT_EQ(exit_code, 2); |
| 921 | } |
| 922 | |
| 923 | TEST_F(ProcessUtilTest, GetParentProcessId) { |
| 924 | base::ProcessId ppid = base::GetParentProcessId(base::GetCurrentProcId()); |
| 925 | EXPECT_EQ(ppid, getppid()); |
| 926 | } |
| 927 | |
| 928 | // TODO(port): port those unit tests. |
| 929 | bool IsProcessDead(base::ProcessHandle child) { |
| 930 | // waitpid() will actually reap the process which is exactly NOT what we |
| 931 | // want to test for. The good thing is that if it can't find the process |
| 932 | // we'll get a nice value for errno which we can test for. |
| 933 | const pid_t result = HANDLE_EINTR(waitpid(child, NULL, WNOHANG)); |
| 934 | return result == -1 && errno == ECHILD; |
| 935 | } |
| 936 | |
| 937 | TEST_F(ProcessUtilTest, DelayedTermination) { |
| 938 | base::Process child_process = SpawnChild("process_util_test_never_die"); |
| 939 | ASSERT_TRUE(child_process.IsValid()); |
| 940 | base::EnsureProcessTerminated(child_process.Duplicate()); |
| 941 | int exit_code; |
| 942 | child_process.WaitForExitWithTimeout(base::TimeDelta::FromSeconds(5), |
| 943 | &exit_code); |
| 944 | |
| 945 | // Check that process was really killed. |
| 946 | EXPECT_TRUE(IsProcessDead(child_process.Handle())); |
| 947 | } |
| 948 | |
| 949 | MULTIPROCESS_TEST_MAIN(process_util_test_never_die) { |
| 950 | while (1) { |
| 951 | sleep(500); |
| 952 | } |
| 953 | return 0; |
| 954 | } |
| 955 | |
| 956 | TEST_F(ProcessUtilTest, ImmediateTermination) { |
| 957 | base::Process child_process = SpawnChild("process_util_test_die_immediately"); |
| 958 | ASSERT_TRUE(child_process.IsValid()); |
| 959 | // Give it time to die. |
| 960 | sleep(2); |
| 961 | base::EnsureProcessTerminated(child_process.Duplicate()); |
| 962 | |
| 963 | // Check that process was really killed. |
| 964 | EXPECT_TRUE(IsProcessDead(child_process.Handle())); |
| 965 | } |
| 966 | |
| 967 | MULTIPROCESS_TEST_MAIN(process_util_test_die_immediately) { |
| 968 | return 0; |
| 969 | } |
| 970 | |
| 971 | #if !defined(OS_ANDROID) |
| 972 | const char kPipeValue = '\xcc'; |
| 973 | |
| 974 | class ReadFromPipeDelegate : public base::LaunchOptions::PreExecDelegate { |
| 975 | public: |
| 976 | explicit ReadFromPipeDelegate(int fd) : fd_(fd) {} |
| 977 | ~ReadFromPipeDelegate() override {} |
| 978 | void RunAsyncSafe() override { |
| 979 | char c; |
| 980 | RAW_CHECK(HANDLE_EINTR(read(fd_, &c, 1)) == 1); |
| 981 | RAW_CHECK(IGNORE_EINTR(close(fd_)) == 0); |
| 982 | RAW_CHECK(c == kPipeValue); |
| 983 | } |
| 984 | |
| 985 | private: |
| 986 | int fd_; |
| 987 | DISALLOW_COPY_AND_ASSIGN(ReadFromPipeDelegate); |
| 988 | }; |
| 989 | |
| 990 | TEST_F(ProcessUtilTest, PreExecHook) { |
| 991 | int pipe_fds[2]; |
| 992 | ASSERT_EQ(0, pipe(pipe_fds)); |
| 993 | |
| 994 | base::ScopedFD read_fd(pipe_fds[0]); |
| 995 | base::ScopedFD write_fd(pipe_fds[1]); |
| 996 | base::FileHandleMappingVector fds_to_remap; |
| 997 | fds_to_remap.push_back(std::make_pair(read_fd.get(), read_fd.get())); |
| 998 | |
| 999 | ReadFromPipeDelegate read_from_pipe_delegate(read_fd.get()); |
| 1000 | base::LaunchOptions options; |
| 1001 | options.fds_to_remap = &fds_to_remap; |
| 1002 | options.pre_exec_delegate = &read_from_pipe_delegate; |
| 1003 | base::Process process(SpawnChildWithOptions("SimpleChildProcess", options)); |
| 1004 | ASSERT_TRUE(process.IsValid()); |
| 1005 | |
| 1006 | read_fd.reset(); |
| 1007 | ASSERT_EQ(1, HANDLE_EINTR(write(write_fd.get(), &kPipeValue, 1))); |
| 1008 | |
| 1009 | int exit_code = 42; |
| 1010 | EXPECT_TRUE(process.WaitForExit(&exit_code)); |
| 1011 | EXPECT_EQ(0, exit_code); |
| 1012 | } |
| 1013 | #endif // !defined(OS_ANDROID) |
| 1014 | |
| 1015 | #endif // defined(OS_POSIX) |
| 1016 | |
| 1017 | #if defined(OS_LINUX) |
| 1018 | const int kSuccess = 0; |
| 1019 | |
| 1020 | MULTIPROCESS_TEST_MAIN(CheckPidProcess) { |
| 1021 | const pid_t kInitPid = 1; |
| 1022 | const pid_t pid = syscall(__NR_getpid); |
| 1023 | CHECK(pid == kInitPid); |
| 1024 | CHECK(getpid() == pid); |
| 1025 | return kSuccess; |
| 1026 | } |
| 1027 | |
| 1028 | TEST_F(ProcessUtilTest, CloneFlags) { |
| 1029 | if (RunningOnValgrind() || |
| 1030 | !base::PathExists(FilePath("/proc/self/ns/user")) || |
| 1031 | !base::PathExists(FilePath("/proc/self/ns/pid"))) { |
| 1032 | // User or PID namespaces are not supported. |
| 1033 | return; |
| 1034 | } |
| 1035 | |
| 1036 | base::LaunchOptions options; |
| 1037 | options.clone_flags = CLONE_NEWUSER | CLONE_NEWPID; |
| 1038 | |
| 1039 | base::Process process(SpawnChildWithOptions("CheckPidProcess", options)); |
| 1040 | ASSERT_TRUE(process.IsValid()); |
| 1041 | |
| 1042 | int exit_code = 42; |
| 1043 | EXPECT_TRUE(process.WaitForExit(&exit_code)); |
| 1044 | EXPECT_EQ(kSuccess, exit_code); |
| 1045 | } |
| 1046 | |
| 1047 | TEST(ForkWithFlagsTest, UpdatesPidCache) { |
| 1048 | // The libc clone function, which allows ForkWithFlags to keep the pid cache |
| 1049 | // up to date, does not work on Valgrind. |
| 1050 | if (RunningOnValgrind()) { |
| 1051 | return; |
| 1052 | } |
| 1053 | |
| 1054 | // Warm up the libc pid cache, if there is one. |
| 1055 | ASSERT_EQ(syscall(__NR_getpid), getpid()); |
| 1056 | |
| 1057 | pid_t ctid = 0; |
| 1058 | const pid_t pid = |
| 1059 | base::ForkWithFlags(SIGCHLD | CLONE_CHILD_SETTID, nullptr, &ctid); |
| 1060 | if (pid == 0) { |
| 1061 | // In child. Check both the raw getpid syscall and the libc getpid wrapper |
| 1062 | // (which may rely on a pid cache). |
| 1063 | RAW_CHECK(syscall(__NR_getpid) == ctid); |
| 1064 | RAW_CHECK(getpid() == ctid); |
| 1065 | _exit(kSuccess); |
| 1066 | } |
| 1067 | |
| 1068 | ASSERT_NE(-1, pid); |
| 1069 | int status = 42; |
| 1070 | ASSERT_EQ(pid, HANDLE_EINTR(waitpid(pid, &status, 0))); |
| 1071 | ASSERT_TRUE(WIFEXITED(status)); |
| 1072 | EXPECT_EQ(kSuccess, WEXITSTATUS(status)); |
| 1073 | } |
| 1074 | |
| 1075 | MULTIPROCESS_TEST_MAIN(CheckCwdProcess) { |
| 1076 | base::FilePath expected; |
| 1077 | CHECK(base::GetTempDir(&expected)); |
| 1078 | base::FilePath actual; |
| 1079 | CHECK(base::GetCurrentDirectory(&actual)); |
| 1080 | CHECK(actual == expected); |
| 1081 | return kSuccess; |
| 1082 | } |
| 1083 | |
| 1084 | TEST_F(ProcessUtilTest, CurrentDirectory) { |
| 1085 | // TODO(rickyz): Add support for passing arguments to multiprocess children, |
| 1086 | // then create a special directory for this test. |
| 1087 | base::FilePath tmp_dir; |
| 1088 | ASSERT_TRUE(base::GetTempDir(&tmp_dir)); |
| 1089 | |
| 1090 | base::LaunchOptions options; |
| 1091 | options.current_directory = tmp_dir; |
| 1092 | |
| 1093 | base::Process process(SpawnChildWithOptions("CheckCwdProcess", options)); |
| 1094 | ASSERT_TRUE(process.IsValid()); |
| 1095 | |
| 1096 | int exit_code = 42; |
| 1097 | EXPECT_TRUE(process.WaitForExit(&exit_code)); |
| 1098 | EXPECT_EQ(kSuccess, exit_code); |
| 1099 | } |
| 1100 | |
| 1101 | TEST_F(ProcessUtilTest, InvalidCurrentDirectory) { |
| 1102 | base::LaunchOptions options; |
| 1103 | options.current_directory = base::FilePath("/dev/null"); |
| 1104 | |
| 1105 | base::Process process(SpawnChildWithOptions("SimpleChildProcess", options)); |
| 1106 | ASSERT_TRUE(process.IsValid()); |
| 1107 | |
| 1108 | int exit_code = kSuccess; |
| 1109 | EXPECT_TRUE(process.WaitForExit(&exit_code)); |
| 1110 | EXPECT_NE(kSuccess, exit_code); |
| 1111 | } |
| 1112 | #endif |