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| 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 const char kSignalFileSlow[] = "SlowChildProcess.die"; | |
| 68 const char kSignalFileKill[] = "KilledChildProcess.die"; | |
| 69 | |
| 70 #if defined(OS_POSIX) | |
| 71 const char kSignalFileTerm[] = "TerminatedChildProcess.die"; | |
| 72 | |
| 73 #if defined(OS_ANDROID) | |
| 74 const char kShellPath[] = "/system/bin/sh"; | |
| 75 const char kPosixShell[] = "sh"; | |
| 76 #else | |
| 77 const char kShellPath[] = "/bin/sh"; | |
| 78 const char kPosixShell[] = "bash"; | |
| 79 #endif | |
| 80 #endif // defined(OS_POSIX) | |
| 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 #if defined(CLONE_NEWUSER) && defined(CLONE_NEWPID) | |
| 1029 TEST_F(ProcessUtilTest, CloneFlags) { | |
| 1030 if (RunningOnValgrind() || | |
| 1031 !base::PathExists(FilePath("/proc/self/ns/user")) || | |
| 1032 !base::PathExists(FilePath("/proc/self/ns/pid"))) { | |
| 1033 // User or PID namespaces are not supported. | |
| 1034 return; | |
| 1035 } | |
| 1036 | |
| 1037 base::LaunchOptions options; | |
| 1038 options.clone_flags = CLONE_NEWUSER | CLONE_NEWPID; | |
| 1039 | |
| 1040 base::Process process(SpawnChildWithOptions("CheckPidProcess", options)); | |
| 1041 ASSERT_TRUE(process.IsValid()); | |
| 1042 | |
| 1043 int exit_code = 42; | |
| 1044 EXPECT_TRUE(process.WaitForExit(&exit_code)); | |
| 1045 EXPECT_EQ(kSuccess, exit_code); | |
| 1046 } | |
| 1047 #endif | |
| 1048 | |
| 1049 TEST(ForkWithFlagsTest, UpdatesPidCache) { | |
| 1050 // The libc clone function, which allows ForkWithFlags to keep the pid cache | |
| 1051 // up to date, does not work on Valgrind. | |
| 1052 if (RunningOnValgrind()) { | |
| 1053 return; | |
| 1054 } | |
| 1055 | |
| 1056 // Warm up the libc pid cache, if there is one. | |
| 1057 ASSERT_EQ(syscall(__NR_getpid), getpid()); | |
| 1058 | |
| 1059 pid_t ctid = 0; | |
| 1060 const pid_t pid = | |
| 1061 base::ForkWithFlags(SIGCHLD | CLONE_CHILD_SETTID, nullptr, &ctid); | |
| 1062 if (pid == 0) { | |
| 1063 // In child. Check both the raw getpid syscall and the libc getpid wrapper | |
| 1064 // (which may rely on a pid cache). | |
| 1065 RAW_CHECK(syscall(__NR_getpid) == ctid); | |
| 1066 RAW_CHECK(getpid() == ctid); | |
| 1067 _exit(kSuccess); | |
| 1068 } | |
| 1069 | |
| 1070 ASSERT_NE(-1, pid); | |
| 1071 int status = 42; | |
| 1072 ASSERT_EQ(pid, HANDLE_EINTR(waitpid(pid, &status, 0))); | |
| 1073 ASSERT_TRUE(WIFEXITED(status)); | |
| 1074 EXPECT_EQ(kSuccess, WEXITSTATUS(status)); | |
| 1075 } | |
| 1076 | |
| 1077 MULTIPROCESS_TEST_MAIN(CheckCwdProcess) { | |
| 1078 base::FilePath expected; | |
| 1079 CHECK(base::GetTempDir(&expected)); | |
| 1080 base::FilePath actual; | |
| 1081 CHECK(base::GetCurrentDirectory(&actual)); | |
| 1082 CHECK(actual == expected); | |
| 1083 return kSuccess; | |
| 1084 } | |
| 1085 | |
| 1086 TEST_F(ProcessUtilTest, CurrentDirectory) { | |
| 1087 // TODO(rickyz): Add support for passing arguments to multiprocess children, | |
| 1088 // then create a special directory for this test. | |
| 1089 base::FilePath tmp_dir; | |
| 1090 ASSERT_TRUE(base::GetTempDir(&tmp_dir)); | |
| 1091 | |
| 1092 base::LaunchOptions options; | |
| 1093 options.current_directory = tmp_dir; | |
| 1094 | |
| 1095 base::Process process(SpawnChildWithOptions("CheckCwdProcess", options)); | |
| 1096 ASSERT_TRUE(process.IsValid()); | |
| 1097 | |
| 1098 int exit_code = 42; | |
| 1099 EXPECT_TRUE(process.WaitForExit(&exit_code)); | |
| 1100 EXPECT_EQ(kSuccess, exit_code); | |
| 1101 } | |
| 1102 | |
| 1103 TEST_F(ProcessUtilTest, InvalidCurrentDirectory) { | |
| 1104 base::LaunchOptions options; | |
| 1105 options.current_directory = base::FilePath("/dev/null"); | |
| 1106 | |
| 1107 base::Process process(SpawnChildWithOptions("SimpleChildProcess", options)); | |
| 1108 ASSERT_TRUE(process.IsValid()); | |
| 1109 | |
| 1110 int exit_code = kSuccess; | |
| 1111 EXPECT_TRUE(process.WaitForExit(&exit_code)); | |
| 1112 EXPECT_NE(kSuccess, exit_code); | |
| 1113 } | |
| 1114 #endif | |
| OLD | NEW |
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