GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: node.cc Lines: 398 448 88.8 %
Date: 2022-09-25 04:23:55 Branches: 258 369 69.9 %

Line Branch Exec Source
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// Copyright Joyent, Inc. and other Node contributors.
2
//
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// Permission is hereby granted, free of charge, to any person obtaining a
4
// copy of this software and associated documentation files (the
5
// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
13
//
14
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22
#include "node.h"
23
24
// ========== local headers ==========
25
26
#include "debug_utils-inl.h"
27
#include "env-inl.h"
28
#include "histogram-inl.h"
29
#include "memory_tracker-inl.h"
30
#include "node_binding.h"
31
#include "node_builtins.h"
32
#include "node_errors.h"
33
#include "node_internals.h"
34
#include "node_main_instance.h"
35
#include "node_metadata.h"
36
#include "node_options-inl.h"
37
#include "node_perf.h"
38
#include "node_process-inl.h"
39
#include "node_realm-inl.h"
40
#include "node_report.h"
41
#include "node_revert.h"
42
#include "node_snapshot_builder.h"
43
#include "node_v8_platform-inl.h"
44
#include "node_version.h"
45
46
#if HAVE_OPENSSL
47
#include "node_crypto.h"
48
#endif
49
50
#if defined(NODE_HAVE_I18N_SUPPORT)
51
#include "node_i18n.h"
52
#endif
53
54
#if HAVE_INSPECTOR
55
#include "inspector_agent.h"
56
#include "inspector_io.h"
57
#endif
58
59
#if NODE_USE_V8_PLATFORM
60
#include "libplatform/libplatform.h"
61
#endif  // NODE_USE_V8_PLATFORM
62
#include "v8-profiler.h"
63
64
#if HAVE_INSPECTOR
65
#include "inspector/worker_inspector.h"  // ParentInspectorHandle
66
#endif
67
68
#include "large_pages/node_large_page.h"
69
70
#if defined(__APPLE__) || defined(__linux__) || defined(_WIN32)
71
#define NODE_USE_V8_WASM_TRAP_HANDLER 1
72
#else
73
#define NODE_USE_V8_WASM_TRAP_HANDLER 0
74
#endif
75
76
#if NODE_USE_V8_WASM_TRAP_HANDLER
77
#if defined(_WIN32)
78
#include "v8-wasm-trap-handler-win.h"
79
#else
80
#include <atomic>
81
#include "v8-wasm-trap-handler-posix.h"
82
#endif
83
#endif  // NODE_USE_V8_WASM_TRAP_HANDLER
84
85
// ========== global C headers ==========
86
87
#include <fcntl.h>  // _O_RDWR
88
#include <sys/types.h>
89
90
#if defined(NODE_HAVE_I18N_SUPPORT)
91
#include <unicode/uvernum.h>
92
#include <unicode/utypes.h>
93
#endif
94
95
96
#if defined(LEAK_SANITIZER)
97
#include <sanitizer/lsan_interface.h>
98
#endif
99
100
#if defined(_MSC_VER)
101
#include <direct.h>
102
#include <io.h>
103
#define STDIN_FILENO 0
104
#else
105
#include <pthread.h>
106
#include <sys/resource.h>  // getrlimit, setrlimit
107
#include <termios.h>       // tcgetattr, tcsetattr
108
#include <unistd.h>        // STDIN_FILENO, STDERR_FILENO
109
#endif
110
111
// ========== global C++ headers ==========
112
113
#include <cerrno>
114
#include <climits>  // PATH_MAX
115
#include <csignal>
116
#include <cstdio>
117
#include <cstdlib>
118
#include <cstring>
119
120
#include <string>
121
#include <vector>
122
123
namespace node {
124
125
using builtins::BuiltinLoader;
126
127
using v8::EscapableHandleScope;
128
using v8::Isolate;
129
using v8::Local;
130
using v8::MaybeLocal;
131
using v8::Object;
132
using v8::V8;
133
using v8::Value;
134
135
namespace per_process {
136
137
// node_revert.h
138
// Bit flag used to track security reverts.
139
unsigned int reverted_cve = 0;
140
141
// util.h
142
// Tells whether the per-process V8::Initialize() is called and
143
// if it is safe to call v8::Isolate::TryGetCurrent().
144
bool v8_initialized = false;
145
146
// node_internals.h
147
// process-relative uptime base in nanoseconds, initialized in node::Start()
148
uint64_t node_start_time;
149
150
#if NODE_USE_V8_WASM_TRAP_HANDLER && defined(_WIN32)
151
PVOID old_vectored_exception_handler;
152
#endif
153
154
// node_v8_platform-inl.h
155
struct V8Platform v8_platform;
156
}  // namespace per_process
157
158
// The section in the OpenSSL configuration file to be loaded.
159
const char* conf_section_name = STRINGIFY(NODE_OPENSSL_CONF_NAME);
160
161
#ifdef __POSIX__
162
void SignalExit(int signo, siginfo_t* info, void* ucontext) {
163
  ResetStdio();
164
  raise(signo);
165
}
166
#endif  // __POSIX__
167
168
#if HAVE_INSPECTOR
169
6301
int Environment::InitializeInspector(
170
    std::unique_ptr<inspector::ParentInspectorHandle> parent_handle) {
171
12602
  std::string inspector_path;
172
6301
  bool is_main = !parent_handle;
173
6301
  if (parent_handle) {
174
728
    inspector_path = parent_handle->url();
175
728
    inspector_agent_->SetParentHandle(std::move(parent_handle));
176
  } else {
177
5573
    inspector_path = argv_.size() > 1 ? argv_[1].c_str() : "";
178
  }
179
180
6301
  CHECK(!inspector_agent_->IsListening());
181
  // Inspector agent can't fail to start, but if it was configured to listen
182
  // right away on the websocket port and fails to bind/etc, this will return
183
  // false.
184
12602
  inspector_agent_->Start(inspector_path,
185
6301
                          options_->debug_options(),
186
12602
                          inspector_host_port(),
187
                          is_main);
188

6416
  if (options_->debug_options().inspector_enabled &&
189
115
      !inspector_agent_->IsListening()) {
190
5
    return 12;  // Signal internal error
191
  }
192
193
6296
  profiler::StartProfilers(this);
194
195
6296
  if (inspector_agent_->options().break_node_first_line) {
196
1
    inspector_agent_->PauseOnNextJavascriptStatement("Break at bootstrap");
197
  }
198
199
6296
  return 0;
200
}
201
#endif  // HAVE_INSPECTOR
202
203
#define ATOMIC_WAIT_EVENTS(V)                                               \
204
  V(kStartWait,           "started")                                        \
205
  V(kWokenUp,             "was woken up by another thread")                 \
206
  V(kTimedOut,            "timed out")                                      \
207
  V(kTerminatedExecution, "was stopped by terminated execution")            \
208
  V(kAPIStopped,          "was stopped through the embedder API")           \
209
  V(kNotEqual,            "did not wait because the values mismatched")     \
210
211
8
static void AtomicsWaitCallback(Isolate::AtomicsWaitEvent event,
212
                                Local<v8::SharedArrayBuffer> array_buffer,
213
                                size_t offset_in_bytes, int64_t value,
214
                                double timeout_in_ms,
215
                                Isolate::AtomicsWaitWakeHandle* stop_handle,
216
                                void* data) {
217
8
  Environment* env = static_cast<Environment*>(data);
218
219
8
  const char* message = "(unknown event)";
220

8
  switch (event) {
221
#define V(key, msg)                         \
222
    case Isolate::AtomicsWaitEvent::key:    \
223
      message = msg;                        \
224
      break;
225
8
    ATOMIC_WAIT_EVENTS(V)
226
#undef V
227
  }
228
229
16
  fprintf(stderr,
230
          "(node:%d) [Thread %" PRIu64 "] Atomics.wait(%p + %zx, %" PRId64
231
          ", %.f) %s\n",
232
8
          static_cast<int>(uv_os_getpid()),
233
          env->thread_id(),
234
          array_buffer->Data(),
235
          offset_in_bytes,
236
          value,
237
          timeout_in_ms,
238
          message);
239
8
}
240
241
6269
void Environment::InitializeDiagnostics() {
242
6269
  isolate_->GetHeapProfiler()->AddBuildEmbedderGraphCallback(
243
      Environment::BuildEmbedderGraph, this);
244
6269
  if (heap_snapshot_near_heap_limit_ > 0) {
245
1
    AddHeapSnapshotNearHeapLimitCallback();
246
  }
247
6269
  if (options_->trace_uncaught)
248
3
    isolate_->SetCaptureStackTraceForUncaughtExceptions(true);
249
6269
  if (options_->trace_atomics_wait) {
250
2
    isolate_->SetAtomicsWaitCallback(AtomicsWaitCallback, this);
251
2
    AddCleanupHook([](void* data) {
252
2
      Environment* env = static_cast<Environment*>(data);
253
2
      env->isolate()->SetAtomicsWaitCallback(nullptr, nullptr);
254
2
    }, this);
255
  }
256
6269
}
257
258
static
259
6269
MaybeLocal<Value> StartExecution(Environment* env, const char* main_script_id) {
260
6269
  EscapableHandleScope scope(env->isolate());
261
6269
  CHECK_NOT_NULL(main_script_id);
262
6269
  Realm* realm = env->principal_realm();
263
264
12271
  return scope.EscapeMaybe(realm->ExecuteBootstrapper(main_script_id));
265
}
266
267
6269
MaybeLocal<Value> StartExecution(Environment* env, StartExecutionCallback cb) {
268
  InternalCallbackScope callback_scope(
269
      env,
270
      Object::New(env->isolate()),
271
      { 1, 0 },
272
12269
      InternalCallbackScope::kSkipAsyncHooks);
273
274
6269
  if (cb != nullptr) {
275
24
    EscapableHandleScope scope(env->isolate());
276
277
48
    if (StartExecution(env, "internal/main/environment").IsEmpty()) return {};
278
279
    StartExecutionCallbackInfo info = {
280
24
        env->process_object(),
281
24
        env->builtin_module_require(),
282
    };
283
284
46
    return scope.EscapeMaybe(cb(info));
285
  }
286
287
  // TODO(joyeecheung): move these conditions into JS land and let the
288
  // deserialize main function take precedence. For workers, we need to
289
  // move the pre-execution part into a different file that can be
290
  // reused when dealing with user-defined main functions.
291
12490
  if (!env->snapshot_deserialize_main().IsEmpty()) {
292
    return env->RunSnapshotDeserializeMain();
293
  }
294
295
6245
  if (env->worker_context() != nullptr) {
296
722
    return StartExecution(env, "internal/main/worker_thread");
297
  }
298
299
10779
  std::string first_argv;
300
5523
  if (env->argv().size() > 1) {
301
4969
    first_argv = env->argv()[1];
302
  }
303
304
5523
  if (first_argv == "inspect") {
305
38
    return StartExecution(env, "internal/main/inspect");
306
  }
307
308
5485
  if (per_process::cli_options->build_snapshot) {
309
1
    return StartExecution(env, "internal/main/mksnapshot");
310
  }
311
312
5484
  if (per_process::cli_options->print_help) {
313
2
    return StartExecution(env, "internal/main/print_help");
314
  }
315
316
317
5482
  if (env->options()->prof_process) {
318
1
    return StartExecution(env, "internal/main/prof_process");
319
  }
320
321
  // -e/--eval without -i/--interactive
322


5481
  if (env->options()->has_eval_string && !env->options()->force_repl) {
323
517
    return StartExecution(env, "internal/main/eval_string");
324
  }
325
326
4964
  if (env->options()->syntax_check_only) {
327
39
    return StartExecution(env, "internal/main/check_syntax");
328
  }
329
330
4925
  if (env->options()->test_runner) {
331
10
    return StartExecution(env, "internal/main/test_runner");
332
  }
333
334


4915
  if (env->options()->watch_mode && !first_argv.empty()) {
335
11
    return StartExecution(env, "internal/main/watch_mode");
336
  }
337
338

4904
  if (!first_argv.empty() && first_argv != "-") {
339
4858
    return StartExecution(env, "internal/main/run_main_module");
340
  }
341
342


46
  if (env->options()->force_repl || uv_guess_handle(STDIN_FILENO) == UV_TTY) {
343
28
    return StartExecution(env, "internal/main/repl");
344
  }
345
346
18
  return StartExecution(env, "internal/main/eval_stdin");
347
}
348
349
#ifdef __POSIX__
350
typedef void (*sigaction_cb)(int signo, siginfo_t* info, void* ucontext);
351
#endif
352
#if NODE_USE_V8_WASM_TRAP_HANDLER
353
#if defined(_WIN32)
354
static LONG TrapWebAssemblyOrContinue(EXCEPTION_POINTERS* exception) {
355
  if (v8::TryHandleWebAssemblyTrapWindows(exception)) {
356
    return EXCEPTION_CONTINUE_EXECUTION;
357
  }
358
  return EXCEPTION_CONTINUE_SEARCH;
359
}
360
#else
361
static std::atomic<sigaction_cb> previous_sigsegv_action;
362
363
6
void TrapWebAssemblyOrContinue(int signo, siginfo_t* info, void* ucontext) {
364
6
  if (!v8::TryHandleWebAssemblyTrapPosix(signo, info, ucontext)) {
365
6
    sigaction_cb prev = previous_sigsegv_action.load();
366
6
    if (prev != nullptr) {
367
6
      prev(signo, info, ucontext);
368
    } else {
369
      // Reset to the default signal handler, i.e. cause a hard crash.
370
      struct sigaction sa;
371
      memset(&sa, 0, sizeof(sa));
372
      sa.sa_handler = SIG_DFL;
373
      CHECK_EQ(sigaction(signo, &sa, nullptr), 0);
374
375
      ResetStdio();
376
      raise(signo);
377
    }
378
  }
379
6
}
380
#endif  // defined(_WIN32)
381
#endif  // NODE_USE_V8_WASM_TRAP_HANDLER
382
383
#ifdef __POSIX__
384
17741
void RegisterSignalHandler(int signal,
385
                           sigaction_cb handler,
386
                           bool reset_handler) {
387
17741
  CHECK_NOT_NULL(handler);
388
#if NODE_USE_V8_WASM_TRAP_HANDLER
389
17741
  if (signal == SIGSEGV) {
390
4
    CHECK(previous_sigsegv_action.is_lock_free());
391
4
    CHECK(!reset_handler);
392
4
    previous_sigsegv_action.store(handler);
393
4
    return;
394
  }
395
#endif  // NODE_USE_V8_WASM_TRAP_HANDLER
396
  struct sigaction sa;
397
17737
  memset(&sa, 0, sizeof(sa));
398
17737
  sa.sa_sigaction = handler;
399
17737
  sa.sa_flags = reset_handler ? SA_RESETHAND : 0;
400
17737
  sigfillset(&sa.sa_mask);
401
17737
  CHECK_EQ(sigaction(signal, &sa, nullptr), 0);
402
}
403
#endif  // __POSIX__
404
405
#ifdef __POSIX__
406
static struct {
407
  int flags;
408
  bool isatty;
409
  struct stat stat;
410
  struct termios termios;
411
} stdio[1 + STDERR_FILENO];
412
#endif  // __POSIX__
413
414
10475
void ResetSignalHandlers() {
415
#ifdef __POSIX__
416
  // Restore signal dispositions, the parent process may have changed them.
417
  struct sigaction act;
418
10475
  memset(&act, 0, sizeof(act));
419
420
  // The hard-coded upper limit is because NSIG is not very reliable; on Linux,
421
  // it evaluates to 32, 34 or 64, depending on whether RT signals are enabled.
422
  // Counting up to SIGRTMIN doesn't work for the same reason.
423
335200
  for (unsigned nr = 1; nr < kMaxSignal; nr += 1) {
424

324725
    if (nr == SIGKILL || nr == SIGSTOP)
425
20950
      continue;
426

303775
    act.sa_handler = (nr == SIGPIPE || nr == SIGXFSZ) ? SIG_IGN : SIG_DFL;
427
303775
    CHECK_EQ(0, sigaction(nr, &act, nullptr));
428
  }
429
#endif  // __POSIX__
430
10475
}
431
432
static std::atomic<uint64_t> init_process_flags = 0;
433
434
5596
static void PlatformInit(ProcessInitializationFlags::Flags flags) {
435
  // init_process_flags is accessed in ResetStdio(),
436
  // which can be called from signal handlers.
437
5596
  CHECK(init_process_flags.is_lock_free());
438
  init_process_flags.store(flags);
439
440
5596
  if (!(flags & ProcessInitializationFlags::kNoStdioInitialization)) {
441
5596
    atexit(ResetStdio);
442
  }
443
444
#ifdef __POSIX__
445
5596
  if (!(flags & ProcessInitializationFlags::kNoStdioInitialization)) {
446
    // Disable stdio buffering, it interacts poorly with printf()
447
    // calls elsewhere in the program (e.g., any logging from V8.)
448
5596
    setvbuf(stdout, nullptr, _IONBF, 0);
449
5596
    setvbuf(stderr, nullptr, _IONBF, 0);
450
451
    // Make sure file descriptors 0-2 are valid before we start logging
452
    // anything.
453
22384
    for (auto& s : stdio) {
454
16788
      const int fd = &s - stdio;
455
16788
      if (fstat(fd, &s.stat) == 0) continue;
456
      // Anything but EBADF means something is seriously wrong.  We don't
457
      // have to special-case EINTR, fstat() is not interruptible.
458
2
      if (errno != EBADF) ABORT();
459
2
      if (fd != open("/dev/null", O_RDWR)) ABORT();
460
2
      if (fstat(fd, &s.stat) != 0) ABORT();
461
    }
462
  }
463
464
5596
  if (!(flags & ProcessInitializationFlags::kNoDefaultSignalHandling)) {
465
#if HAVE_INSPECTOR
466
    sigset_t sigmask;
467
5596
    sigemptyset(&sigmask);
468
5596
    sigaddset(&sigmask, SIGUSR1);
469
5596
    const int err = pthread_sigmask(SIG_SETMASK, &sigmask, nullptr);
470
5596
    CHECK_EQ(err, 0);
471
#endif  // HAVE_INSPECTOR
472
473
5596
    ResetSignalHandlers();
474
  }
475
476
5596
  if (!(flags & ProcessInitializationFlags::kNoStdioInitialization)) {
477
    // Record the state of the stdio file descriptors so we can restore it
478
    // on exit.  Needs to happen before installing signal handlers because
479
    // they make use of that information.
480
22384
    for (auto& s : stdio) {
481
16788
      const int fd = &s - stdio;
482
      int err;
483
484
      do {
485
16788
        s.flags = fcntl(fd, F_GETFL);
486

16788
      } while (s.flags == -1 && errno == EINTR);  // NOLINT
487
16788
      CHECK_NE(s.flags, -1);
488
489
16788
      if (uv_guess_handle(fd) != UV_TTY) continue;
490
120
      s.isatty = true;
491
492
      do {
493
120
        err = tcgetattr(fd, &s.termios);
494

120
      } while (err == -1 && errno == EINTR);  // NOLINT
495
120
      CHECK_EQ(err, 0);
496
    }
497
  }
498
499
5596
  if (!(flags & ProcessInitializationFlags::kNoDefaultSignalHandling)) {
500
5596
    RegisterSignalHandler(SIGINT, SignalExit, true);
501
5596
    RegisterSignalHandler(SIGTERM, SignalExit, true);
502
503
#if NODE_USE_V8_WASM_TRAP_HANDLER
504
#if defined(_WIN32)
505
    {
506
      constexpr ULONG first = TRUE;
507
      per_process::old_vectored_exception_handler =
508
          AddVectoredExceptionHandler(first, TrapWebAssemblyOrContinue);
509
    }
510
#else
511
    // Tell V8 to disable emitting WebAssembly
512
    // memory bounds checks. This means that we have
513
    // to catch the SIGSEGV in TrapWebAssemblyOrContinue
514
    // and pass the signal context to V8.
515
    {
516
      struct sigaction sa;
517
5596
      memset(&sa, 0, sizeof(sa));
518
5596
      sa.sa_sigaction = TrapWebAssemblyOrContinue;
519
5596
      sa.sa_flags = SA_SIGINFO;
520
5596
      CHECK_EQ(sigaction(SIGSEGV, &sa, nullptr), 0);
521
    }
522
#endif  // defined(_WIN32)
523
5596
    V8::EnableWebAssemblyTrapHandler(false);
524
#endif  // NODE_USE_V8_WASM_TRAP_HANDLER
525
  }
526
527
5596
  if (!(flags & ProcessInitializationFlags::kNoAdjustResourceLimits)) {
528
    // Raise the open file descriptor limit.
529
    struct rlimit lim;
530

5596
    if (getrlimit(RLIMIT_NOFILE, &lim) == 0 && lim.rlim_cur != lim.rlim_max) {
531
      // Do a binary search for the limit.
532
      rlim_t min = lim.rlim_cur;
533
      rlim_t max = 1 << 20;
534
      // But if there's a defined upper bound, don't search, just set it.
535
      if (lim.rlim_max != RLIM_INFINITY) {
536
        min = lim.rlim_max;
537
        max = lim.rlim_max;
538
      }
539
      do {
540
        lim.rlim_cur = min + (max - min) / 2;
541
        if (setrlimit(RLIMIT_NOFILE, &lim)) {
542
          max = lim.rlim_cur;
543
        } else {
544
          min = lim.rlim_cur;
545
        }
546
      } while (min + 1 < max);
547
    }
548
  }
549
#endif  // __POSIX__
550
#ifdef _WIN32
551
  if (!(flags & ProcessInitializationFlags::kNoStdioInitialization)) {
552
    for (int fd = 0; fd <= 2; ++fd) {
553
      auto handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
554
      if (handle == INVALID_HANDLE_VALUE ||
555
          GetFileType(handle) == FILE_TYPE_UNKNOWN) {
556
        // Ignore _close result. If it fails or not depends on used Windows
557
        // version. We will just check _open result.
558
        _close(fd);
559
        if (fd != _open("nul", _O_RDWR)) ABORT();
560
      }
561
    }
562
  }
563
#endif  // _WIN32
564
5596
}
565
566
// Safe to call more than once and from signal handlers.
567
10497
void ResetStdio() {
568
20994
  if (init_process_flags.load() &
569
10497
      ProcessInitializationFlags::kNoStdioInitialization) {
570
    return;
571
  }
572
573
10497
  uv_tty_reset_mode();
574
#ifdef __POSIX__
575
41988
  for (auto& s : stdio) {
576
31491
    const int fd = &s - stdio;
577
578
    struct stat tmp;
579
31491
    if (-1 == fstat(fd, &tmp)) {
580
      CHECK_EQ(errno, EBADF);  // Program closed file descriptor.
581
6
      continue;
582
    }
583
584
31491
    bool is_same_file =
585

31491
        (s.stat.st_dev == tmp.st_dev && s.stat.st_ino == tmp.st_ino);
586
31491
    if (!is_same_file) continue;  // Program reopened file descriptor.
587
588
    int flags;
589
    do
590
31485
      flags = fcntl(fd, F_GETFL);
591

31485
    while (flags == -1 && errno == EINTR);  // NOLINT
592
31485
    CHECK_NE(flags, -1);
593
594
    // Restore the O_NONBLOCK flag if it changed.
595
31485
    if (O_NONBLOCK & (flags ^ s.flags)) {
596
1412
      flags &= ~O_NONBLOCK;
597
1412
      flags |= s.flags & O_NONBLOCK;
598
599
      int err;
600
      do
601
1412
        err = fcntl(fd, F_SETFL, flags);
602

1412
      while (err == -1 && errno == EINTR);  // NOLINT
603
1412
      CHECK_NE(err, -1);
604
    }
605
606
31485
    if (s.isatty) {
607
      sigset_t sa;
608
      int err;
609
610
      // We might be a background job that doesn't own the TTY so block SIGTTOU
611
      // before making the tcsetattr() call, otherwise that signal suspends us.
612
228
      sigemptyset(&sa);
613
228
      sigaddset(&sa, SIGTTOU);
614
615
228
      CHECK_EQ(0, pthread_sigmask(SIG_BLOCK, &sa, nullptr));
616
      do
617
228
        err = tcsetattr(fd, TCSANOW, &s.termios);
618

228
      while (err == -1 && errno == EINTR);  // NOLINT
619
228
      CHECK_EQ(0, pthread_sigmask(SIG_UNBLOCK, &sa, nullptr));
620
621
      // Normally we expect err == 0. But if macOS App Sandbox is enabled,
622
      // tcsetattr will fail with err == -1 and errno == EPERM.
623


228
      CHECK_IMPLIES(err != 0, err == -1 && errno == EPERM);
624
    }
625
  }
626
#endif  // __POSIX__
627
}
628
629
630
11056
int ProcessGlobalArgs(std::vector<std::string>* args,
631
                      std::vector<std::string>* exec_args,
632
                      std::vector<std::string>* errors,
633
                      OptionEnvvarSettings settings) {
634
  // Parse a few arguments which are specific to Node.
635
22112
  std::vector<std::string> v8_args;
636
637
22112
  Mutex::ScopedLock lock(per_process::cli_options_mutex);
638
11056
  options_parser::Parse(
639
      args,
640
      exec_args,
641
      &v8_args,
642
      per_process::cli_options.get(),
643
      settings,
644
      errors);
645
646
11056
  if (!errors->empty()) return 9;
647
648
22016
  std::string revert_error;
649
11008
  for (const std::string& cve : per_process::cli_options->security_reverts) {
650
1
    Revert(cve.c_str(), &revert_error);
651
1
    if (!revert_error.empty()) {
652
1
      errors->emplace_back(std::move(revert_error));
653
1
      return 12;
654
    }
655
  }
656
657
22013
  if (per_process::cli_options->disable_proto != "delete" &&
658

22013
      per_process::cli_options->disable_proto != "throw" &&
659
11005
      per_process::cli_options->disable_proto != "") {
660
    errors->emplace_back("invalid mode passed to --disable-proto");
661
    return 12;
662
  }
663
664
  // TODO(aduh95): remove this when the harmony-import-assertions flag
665
  // is removed in V8.
666
22014
  if (std::find(v8_args.begin(), v8_args.end(),
667
11007
                "--no-harmony-import-assertions") == v8_args.end()) {
668
11007
    v8_args.emplace_back("--harmony-import-assertions");
669
  }
670
671
22014
  auto env_opts = per_process::cli_options->per_isolate->per_env;
672
22014
  if (std::find(v8_args.begin(), v8_args.end(),
673

21996
                "--abort-on-uncaught-exception") != v8_args.end() ||
674
11007
      std::find(v8_args.begin(), v8_args.end(),
675
21996
                "--abort_on_uncaught_exception") != v8_args.end()) {
676
21
    env_opts->abort_on_uncaught_exception = true;
677
  }
678
679
#ifdef __POSIX__
680
  // Block SIGPROF signals when sleeping in epoll_wait/kevent/etc.  Avoids the
681
  // performance penalty of frequent EINTR wakeups when the profiler is running.
682
  // Only do this for v8.log profiling, as it breaks v8::CpuProfiler users.
683
11007
  if (std::find(v8_args.begin(), v8_args.end(), "--prof") != v8_args.end()) {
684
2
    uv_loop_configure(uv_default_loop(), UV_LOOP_BLOCK_SIGNAL, SIGPROF);
685
  }
686
#endif
687
688
22014
  std::vector<char*> v8_args_as_char_ptr(v8_args.size());
689
11007
  if (v8_args.size() > 0) {
690
33162
    for (size_t i = 0; i < v8_args.size(); ++i)
691
22155
      v8_args_as_char_ptr[i] = &v8_args[i][0];
692
11007
    int argc = v8_args.size();
693
11007
    V8::SetFlagsFromCommandLine(&argc, &v8_args_as_char_ptr[0], true);
694
11007
    v8_args_as_char_ptr.resize(argc);
695
  }
696
697
  // Anything that's still in v8_argv is not a V8 or a node option.
698
11008
  for (size_t i = 1; i < v8_args_as_char_ptr.size(); i++)
699
1
    errors->push_back("bad option: " + std::string(v8_args_as_char_ptr[i]));
700
701
11007
  if (v8_args_as_char_ptr.size() > 1) return 9;
702
703
11006
  return 0;
704
}
705
706
static std::atomic_bool init_called{false};
707
708
// TODO(addaleax): Turn this into a wrapper around InitializeOncePerProcess()
709
// (with the corresponding additional flags set), then eventually remove this.
710
5597
int InitializeNodeWithArgs(std::vector<std::string>* argv,
711
                           std::vector<std::string>* exec_argv,
712
                           std::vector<std::string>* errors,
713
                           ProcessInitializationFlags::Flags flags) {
714
  // Make sure InitializeNodeWithArgs() is called only once.
715
5597
  CHECK(!init_called.exchange(true));
716
717
  // Initialize node_start_time to get relative uptime.
718
5597
  per_process::node_start_time = uv_hrtime();
719
720
  // Register built-in modules
721
5597
  binding::RegisterBuiltinModules();
722
723
  // Make inherited handles noninheritable.
724
5597
  if (!(flags & ProcessInitializationFlags::kEnableStdioInheritance) &&
725
5597
      !(flags & ProcessInitializationFlags::kNoStdioInitialization)) {
726
5597
    uv_disable_stdio_inheritance();
727
  }
728
729
  // Cache the original command line to be
730
  // used in diagnostic reports.
731
5597
  per_process::cli_options->cmdline = *argv;
732
733
#if defined(NODE_V8_OPTIONS)
734
  // Should come before the call to V8::SetFlagsFromCommandLine()
735
  // so the user can disable a flag --foo at run-time by passing
736
  // --no_foo from the command line.
737
  V8::SetFlagsFromString(NODE_V8_OPTIONS, sizeof(NODE_V8_OPTIONS) - 1);
738
#endif
739
740
5597
  HandleEnvOptions(per_process::cli_options->per_isolate->per_env);
741
742
#if !defined(NODE_WITHOUT_NODE_OPTIONS)
743
5597
  if (!(flags & ProcessInitializationFlags::kDisableNodeOptionsEnv)) {
744
5597
    std::string node_options;
745
746
5597
    if (credentials::SafeGetenv("NODE_OPTIONS", &node_options)) {
747
      std::vector<std::string> env_argv =
748
5476
          ParseNodeOptionsEnvVar(node_options, errors);
749
750
5476
      if (!errors->empty()) return 9;
751
752
      // [0] is expected to be the program name, fill it in from the real argv.
753
5476
      env_argv.insert(env_argv.begin(), argv->at(0));
754
755
5476
      const int exit_code = ProcessGlobalArgs(&env_argv,
756
                                              nullptr,
757
                                              errors,
758
                                              kAllowedInEnvironment);
759
5476
      if (exit_code != 0) return exit_code;
760
    }
761
  }
762
#endif
763
764
5580
  if (!(flags & ProcessInitializationFlags::kDisableCLIOptions)) {
765
5580
    const int exit_code = ProcessGlobalArgs(argv,
766
                                            exec_argv,
767
                                            errors,
768
                                            kDisallowedInEnvironment);
769
5580
    if (exit_code != 0) return exit_code;
770
  }
771
772
  // Set the process.title immediately after processing argv if --title is set.
773
5547
  if (!per_process::cli_options->title.empty())
774
2
    uv_set_process_title(per_process::cli_options->title.c_str());
775
776
#if defined(NODE_HAVE_I18N_SUPPORT)
777
5547
  if (!(flags & ProcessInitializationFlags::kNoICU)) {
778
    // If the parameter isn't given, use the env variable.
779
5547
    if (per_process::cli_options->icu_data_dir.empty())
780
11094
      credentials::SafeGetenv("NODE_ICU_DATA",
781
5547
                              &per_process::cli_options->icu_data_dir);
782
783
#ifdef NODE_ICU_DEFAULT_DATA_DIR
784
    // If neither the CLI option nor the environment variable was specified,
785
    // fall back to the configured default
786
    if (per_process::cli_options->icu_data_dir.empty()) {
787
      // Check whether the NODE_ICU_DEFAULT_DATA_DIR contains the right data
788
      // file and can be read.
789
      static const char full_path[] =
790
          NODE_ICU_DEFAULT_DATA_DIR "/" U_ICUDATA_NAME ".dat";
791
792
      FILE* f = fopen(full_path, "rb");
793
794
      if (f != nullptr) {
795
        fclose(f);
796
        per_process::cli_options->icu_data_dir = NODE_ICU_DEFAULT_DATA_DIR;
797
      }
798
    }
799
#endif  // NODE_ICU_DEFAULT_DATA_DIR
800
801
    // Initialize ICU.
802
    // If icu_data_dir is empty here, it will load the 'minimal' data.
803
5547
    if (!i18n::InitializeICUDirectory(per_process::cli_options->icu_data_dir)) {
804
      errors->push_back("could not initialize ICU "
805
                        "(check NODE_ICU_DATA or --icu-data-dir parameters)\n");
806
      return 9;
807
    }
808
5547
    per_process::metadata.versions.InitializeIntlVersions();
809
  }
810
811
# ifndef __POSIX__
812
  std::string tz;
813
  if (credentials::SafeGetenv("TZ", &tz) && !tz.empty()) {
814
    i18n::SetDefaultTimeZone(tz.c_str());
815
  }
816
# endif
817
818
#endif  // defined(NODE_HAVE_I18N_SUPPORT)
819
820
  // We should set node_is_initialized here instead of in node::Start,
821
  // otherwise embedders using node::Init to initialize everything will not be
822
  // able to set it and native addons will not load for them.
823
5547
  node_is_initialized = true;
824
5547
  return 0;
825
}
826
827
5596
std::unique_ptr<InitializationResult> InitializeOncePerProcess(
828
    const std::vector<std::string>& args,
829
    ProcessInitializationFlags::Flags flags) {
830
11192
  auto result = std::make_unique<InitializationResultImpl>();
831
5596
  result->args_ = args;
832
833
5596
  if (!(flags & ProcessInitializationFlags::kNoParseGlobalDebugVariables)) {
834
    // Initialized the enabled list for Debug() calls with system
835
    // environment variables.
836
5596
    per_process::enabled_debug_list.Parse();
837
  }
838
839
5596
  PlatformInit(flags);
840
841
  // This needs to run *before* V8::Initialize().
842
  {
843
5596
    result->exit_code_ = InitializeNodeWithArgs(
844
5596
        &result->args_, &result->exec_args_, &result->errors_, flags);
845
5596
    if (result->exit_code() != 0) {
846
50
      result->early_return_ = true;
847
50
      return result;
848
    }
849
  }
850
851

16637
  if (!(flags & ProcessInitializationFlags::kNoUseLargePages) &&
852
11091
      (per_process::cli_options->use_largepages == "on" ||
853
5545
       per_process::cli_options->use_largepages == "silent")) {
854
1
    int lp_result = node::MapStaticCodeToLargePages();
855

1
    if (per_process::cli_options->use_largepages == "on" && lp_result != 0) {
856
      result->errors_.emplace_back(node::LargePagesError(lp_result));
857
    }
858
  }
859
860
5546
  if (!(flags & ProcessInitializationFlags::kNoPrintHelpOrVersionOutput)) {
861
5546
    if (per_process::cli_options->print_version) {
862
3
      printf("%s\n", NODE_VERSION);
863
3
      result->exit_code_ = 0;
864
3
      result->early_return_ = true;
865
3
      return result;
866
    }
867
868
5543
    if (per_process::cli_options->print_bash_completion) {
869
2
      std::string completion = options_parser::GetBashCompletion();
870
1
      printf("%s\n", completion.c_str());
871
1
      result->exit_code_ = 0;
872
1
      result->early_return_ = true;
873
1
      return result;
874
    }
875
876
5542
    if (per_process::cli_options->print_v8_help) {
877
      V8::SetFlagsFromString("--help", static_cast<size_t>(6));
878
      result->exit_code_ = 0;
879
      result->early_return_ = true;
880
      return result;
881
    }
882
  }
883
884
5542
  if (!(flags & ProcessInitializationFlags::kNoInitOpenSSL)) {
885
#if HAVE_OPENSSL && !defined(OPENSSL_IS_BORINGSSL)
886
2
    auto GetOpenSSLErrorString = []() -> std::string {
887
2
      std::string ret;
888
2
      ERR_print_errors_cb(
889
2
          [](const char* str, size_t len, void* opaque) {
890
2
            std::string* ret = static_cast<std::string*>(opaque);
891
2
            ret->append(str, len);
892
2
            ret->append("\n");
893
2
            return 0;
894
          },
895
          static_cast<void*>(&ret));
896
2
      return ret;
897
    };
898
899
    {
900
11084
      std::string extra_ca_certs;
901
5542
      if (credentials::SafeGetenv("NODE_EXTRA_CA_CERTS", &extra_ca_certs))
902
4
        crypto::UseExtraCaCerts(extra_ca_certs);
903
    }
904
    // In the case of FIPS builds we should make sure
905
    // the random source is properly initialized first.
906
#if OPENSSL_VERSION_MAJOR >= 3
907
    // Call OPENSSL_init_crypto to initialize OPENSSL_INIT_LOAD_CONFIG to
908
    // avoid the default behavior where errors raised during the parsing of the
909
    // OpenSSL configuration file are not propagated and cannot be detected.
910
    //
911
    // If FIPS is configured the OpenSSL configuration file will have an
912
    // .include pointing to the fipsmodule.cnf file generated by the openssl
913
    // fipsinstall command. If the path to this file is incorrect no error
914
    // will be reported.
915
    //
916
    // For Node.js this will mean that CSPRNG() will be called by V8 as
917
    // part of its initialization process, and CSPRNG() will in turn call
918
    // call RAND_status which will now always return 0, leading to an endless
919
    // loop and the node process will appear to hang/freeze.
920
921
    // Passing NULL as the config file will allow the default openssl.cnf file
922
    // to be loaded, but the default section in that file will not be used,
923
    // instead only the section that matches the value of conf_section_name
924
    // will be read from the default configuration file.
925
5542
    const char* conf_file = nullptr;
926
    // To allow for using the previous default where the 'openssl_conf' appname
927
    // was used, the command line option 'openssl-shared-config' can be used to
928
    // force the old behavior.
929
5542
    if (per_process::cli_options->openssl_shared_config) {
930
      conf_section_name = "openssl_conf";
931
    }
932
    // Use OPENSSL_CONF environment variable is set.
933
5542
    std::string env_openssl_conf;
934
5542
    credentials::SafeGetenv("OPENSSL_CONF", &env_openssl_conf);
935
5542
    if (!env_openssl_conf.empty()) {
936
1
      conf_file = env_openssl_conf.c_str();
937
    }
938
    // Use --openssl-conf command line option if specified.
939
5542
    if (!per_process::cli_options->openssl_config.empty()) {
940
3
      conf_file = per_process::cli_options->openssl_config.c_str();
941
    }
942
943
5542
    OPENSSL_INIT_SETTINGS* settings = OPENSSL_INIT_new();
944
5542
    OPENSSL_INIT_set_config_filename(settings, conf_file);
945
5542
    OPENSSL_INIT_set_config_appname(settings, conf_section_name);
946
5542
    OPENSSL_INIT_set_config_file_flags(settings,
947
                                       CONF_MFLAGS_IGNORE_MISSING_FILE);
948
949
5542
    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, settings);
950
5542
    OPENSSL_INIT_free(settings);
951
952
5542
    if (ERR_peek_error() != 0) {
953
      // XXX: ERR_GET_REASON does not return something that is
954
      // useful as an exit code at all.
955
      result->exit_code_ = ERR_GET_REASON(ERR_peek_error());
956
      result->early_return_ = true;
957
      result->errors_.emplace_back("OpenSSL configuration error:\n" +
958
                                   GetOpenSSLErrorString());
959
      return result;
960
    }
961
#else  // OPENSSL_VERSION_MAJOR < 3
962
    if (FIPS_mode()) {
963
      OPENSSL_init();
964
    }
965
#endif
966
5542
    if (!crypto::ProcessFipsOptions()) {
967
      // XXX: ERR_GET_REASON does not return something that is
968
      // useful as an exit code at all.
969
2
      result->exit_code_ = ERR_GET_REASON(ERR_peek_error());
970
2
      result->early_return_ = true;
971
2
      result->errors_.emplace_back(
972
4
          "OpenSSL error when trying to enable FIPS:\n" +
973
6
          GetOpenSSLErrorString());
974
2
      return result;
975
    }
976
977
    // Ensure CSPRNG is properly seeded.
978
5540
    CHECK(crypto::CSPRNG(nullptr, 0).is_ok());
979
980
5540
    V8::SetEntropySource([](unsigned char* buffer, size_t length) {
981
      // V8 falls back to very weak entropy when this function fails
982
      // and /dev/urandom isn't available. That wouldn't be so bad if
983
      // the entropy was only used for Math.random() but it's also used for
984
      // hash table and address space layout randomization. Better to abort.
985
18070
      CHECK(crypto::CSPRNG(buffer, length).is_ok());
986
18070
      return true;
987
    });
988
#endif  // HAVE_OPENSSL && !defined(OPENSSL_IS_BORINGSSL)
989
  }
990
991
5540
  if (!(flags & ProcessInitializationFlags::kNoInitializeNodeV8Platform)) {
992
5533
    per_process::v8_platform.Initialize(
993
5533
        static_cast<int>(per_process::cli_options->v8_thread_pool_size));
994
5533
    result->platform_ = per_process::v8_platform.Platform();
995
  }
996
997
5540
  if (!(flags & ProcessInitializationFlags::kNoInitializeV8)) {
998
    V8::Initialize();
999
  }
1000
1001
5540
  performance::performance_v8_start = PERFORMANCE_NOW();
1002
5540
  per_process::v8_initialized = true;
1003
1004
5540
  return result;
1005
}
1006
1007
4879
void TearDownOncePerProcess() {
1008
4879
  const uint64_t flags = init_process_flags.load();
1009
4879
  ResetStdio();
1010
4879
  if (!(flags & ProcessInitializationFlags::kNoDefaultSignalHandling)) {
1011
4879
    ResetSignalHandlers();
1012
  }
1013
1014
4879
  per_process::v8_initialized = false;
1015
4879
  if (!(flags & ProcessInitializationFlags::kNoInitializeV8)) {
1016
4874
    V8::Dispose();
1017
  }
1018
1019
#if NODE_USE_V8_WASM_TRAP_HANDLER && defined(_WIN32)
1020
  if (!(flags & ProcessInitializationFlags::kNoDefaultSignalHandling)) {
1021
    RemoveVectoredExceptionHandler(per_process::old_vectored_exception_handler);
1022
  }
1023
#endif
1024
1025
4879
  if (!(flags & ProcessInitializationFlags::kNoInitializeNodeV8Platform)) {
1026
4874
    V8::DisposePlatform();
1027
    // uv_run cannot be called from the time before the beforeExit callback
1028
    // runs until the program exits unless the event loop has any referenced
1029
    // handles after beforeExit terminates. This prevents unrefed timers
1030
    // that happen to terminate during shutdown from being run unsafely.
1031
    // Since uv_run cannot be called, uv_async handles held by the platform
1032
    // will never be fully cleaned up.
1033
4874
    per_process::v8_platform.Dispose();
1034
  }
1035
4879
}
1036
1037
9870
InitializationResult::~InitializationResult() {}
1038
9870
InitializationResultImpl::~InitializationResultImpl() {}
1039
1040
3
int GenerateAndWriteSnapshotData(const SnapshotData** snapshot_data_ptr,
1041
                                 const InitializationResult* result) {
1042
3
  int exit_code = result->exit_code();
1043
  // nullptr indicates there's no snapshot data.
1044
  DCHECK_NULL(*snapshot_data_ptr);
1045
1046
  // node:embedded_snapshot_main indicates that we are using the
1047
  // embedded snapshot and we are not supposed to clean it up.
1048
3
  if (result->args()[1] == "node:embedded_snapshot_main") {
1049
2
    *snapshot_data_ptr = SnapshotBuilder::GetEmbeddedSnapshotData();
1050
2
    if (*snapshot_data_ptr == nullptr) {
1051
      // The Node.js binary is built without embedded snapshot
1052
      fprintf(stderr,
1053
              "node:embedded_snapshot_main was specified as snapshot "
1054
              "entry point but Node.js was built without embedded "
1055
              "snapshot.\n");
1056
      exit_code = 1;
1057
      return exit_code;
1058
    }
1059
  } else {
1060
    // Otherwise, load and run the specified main script.
1061
    std::unique_ptr<SnapshotData> generated_data =
1062
1
        std::make_unique<SnapshotData>();
1063
2
    exit_code = node::SnapshotBuilder::Generate(
1064
2
        generated_data.get(), result->args(), result->exec_args());
1065
1
    if (exit_code == 0) {
1066
      *snapshot_data_ptr = generated_data.release();
1067
    } else {
1068
1
      return exit_code;
1069
    }
1070
  }
1071
1072
  // Get the path to write the snapshot blob to.
1073
2
  std::string snapshot_blob_path;
1074
2
  if (!per_process::cli_options->snapshot_blob.empty()) {
1075
1
    snapshot_blob_path = per_process::cli_options->snapshot_blob;
1076
  } else {
1077
    // Defaults to snapshot.blob in the current working directory.
1078
1
    snapshot_blob_path = std::string("snapshot.blob");
1079
  }
1080
1081
2
  FILE* fp = fopen(snapshot_blob_path.c_str(), "wb");
1082
2
  if (fp != nullptr) {
1083
2
    (*snapshot_data_ptr)->ToBlob(fp);
1084
2
    fclose(fp);
1085
  } else {
1086
    fprintf(stderr,
1087
            "Cannot open %s for writing a snapshot.\n",
1088
            snapshot_blob_path.c_str());
1089
    exit_code = 1;
1090
  }
1091
2
  return exit_code;
1092
}
1093
1094
5523
int LoadSnapshotDataAndRun(const SnapshotData** snapshot_data_ptr,
1095
                           const InitializationResult* result) {
1096
5523
  int exit_code = result->exit_code();
1097
  // nullptr indicates there's no snapshot data.
1098
  DCHECK_NULL(*snapshot_data_ptr);
1099
  // --snapshot-blob indicates that we are reading a customized snapshot.
1100
5523
  if (!per_process::cli_options->snapshot_blob.empty()) {
1101
3
    std::string filename = per_process::cli_options->snapshot_blob;
1102
3
    FILE* fp = fopen(filename.c_str(), "rb");
1103
3
    if (fp == nullptr) {
1104
1
      fprintf(stderr, "Cannot open %s", filename.c_str());
1105
1
      exit_code = 1;
1106
1
      return exit_code;
1107
    }
1108
2
    std::unique_ptr<SnapshotData> read_data = std::make_unique<SnapshotData>();
1109
2
    if (!SnapshotData::FromBlob(read_data.get(), fp)) {
1110
      // If we fail to read the customized snapshot, simply exit with 1.
1111
      exit_code = 1;
1112
      return exit_code;
1113
    }
1114
2
    *snapshot_data_ptr = read_data.release();
1115
2
    fclose(fp);
1116
5520
  } else if (per_process::cli_options->node_snapshot) {
1117
    // If --snapshot-blob is not specified, we are reading the embedded
1118
    // snapshot, but we will skip it if --no-node-snapshot is specified.
1119
    const node::SnapshotData* read_data =
1120
5518
        SnapshotBuilder::GetEmbeddedSnapshotData();
1121

5518
    if (read_data != nullptr && read_data->Check()) {
1122
      // If we fail to read the embedded snapshot, treat it as if Node.js
1123
      // was built without one.
1124
5518
      *snapshot_data_ptr = read_data;
1125
    }
1126
  }
1127
1128
5522
  if ((*snapshot_data_ptr) != nullptr) {
1129
5520
    BuiltinLoader::RefreshCodeCache((*snapshot_data_ptr)->code_cache);
1130
  }
1131
  NodeMainInstance main_instance(*snapshot_data_ptr,
1132
                                 uv_default_loop(),
1133
5522
                                 per_process::v8_platform.Platform(),
1134
5522
                                 result->args(),
1135
11044
                                 result->exec_args());
1136
5522
  exit_code = main_instance.Run();
1137
4863
  return exit_code;
1138
}
1139
1140
5583
int Start(int argc, char** argv) {
1141
5583
  CHECK_GT(argc, 0);
1142
1143
  // Hack around with the argv pointer. Used for process.title = "blah".
1144
5583
  argv = uv_setup_args(argc, argv);
1145
1146
  std::unique_ptr<InitializationResult> result =
1147
16090
      InitializeOncePerProcess(std::vector<std::string>(argv, argv + argc));
1148
5636
  for (const std::string& error : result->errors()) {
1149
53
    FPrintF(stderr, "%s: %s\n", result->args().at(0), error);
1150
  }
1151
5583
  if (result->early_return()) {
1152
56
    return result->exit_code();
1153
  }
1154
1155
  DCHECK_EQ(result->exit_code(), 0);
1156
5527
  const SnapshotData* snapshot_data = nullptr;
1157
1158
4868
  auto cleanup_process = OnScopeLeave([&]() {
1159
4868
    TearDownOncePerProcess();
1160
1161
4868
    if (snapshot_data != nullptr &&
1162
4863
        snapshot_data->data_ownership == SnapshotData::DataOwnership::kOwned) {
1163
2
      delete snapshot_data;
1164
    }
1165
10395
  });
1166
1167
5527
  uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME);
1168
1169
  // --build-snapshot indicates that we are in snapshot building mode.
1170
5527
  if (per_process::cli_options->build_snapshot) {
1171
4
    if (result->args().size() < 2) {
1172
1
      fprintf(stderr,
1173
              "--build-snapshot must be used with an entry point script.\n"
1174
              "Usage: node --build-snapshot /path/to/entry.js\n");
1175
1
      return 9;
1176
    }
1177
3
    return GenerateAndWriteSnapshotData(&snapshot_data, result.get());
1178
  }
1179
1180
  // Without --build-snapshot, we are in snapshot loading mode.
1181
5523
  return LoadSnapshotDataAndRun(&snapshot_data, result.get());
1182
}
1183
1184
370
int Stop(Environment* env) {
1185
370
  env->ExitEnv();
1186
370
  return 0;
1187
}
1188
1189
}  // namespace node
1190
1191
#if !HAVE_INSPECTOR
1192
void Initialize() {}
1193
1194
NODE_MODULE_CONTEXT_AWARE_INTERNAL(inspector, Initialize)
1195
#endif  // !HAVE_INSPECTOR