Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	node_dir.cc	Lines:	162	182	89.0 %
Date:	2022-08-17 04:19:55	Branches:	47	100	47.0 %


#include "node_dir.h"
#include "node_external_reference.h"
#include "node_file-inl.h"
#include "node_process-inl.h"
#include "memory_tracker-inl.h"
#include "util.h"

#include "tracing/trace_event.h"

#include "string_bytes.h"

#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <cstring>
#include <cerrno>
#include <climits>

#include <memory>

namespace node {

namespace fs_dir {

using fs::FSReqAfterScope;
using fs::FSReqBase;
using fs::FSReqWrapSync;
using fs::GetReqWrap;

using v8::Array;
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::HandleScope;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::Null;
using v8::Number;
using v8::Object;
using v8::ObjectTemplate;
using v8::Value;

#define TRACE_NAME(name) "fs_dir.sync." #name
#define GET_TRACE_ENABLED                                                      \
  (*TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED                                 \
  (TRACING_CATEGORY_NODE2(fs_dir, sync)) != 0)
#define FS_DIR_SYNC_TRACE_BEGIN(syscall, ...)                                  \
  if (GET_TRACE_ENABLED)                                                       \
  TRACE_EVENT_BEGIN(TRACING_CATEGORY_NODE2(fs_dir, sync), TRACE_NAME(syscall), \
  ##__VA_ARGS__);
#define FS_DIR_SYNC_TRACE_END(syscall, ...)                                    \
  if (GET_TRACE_ENABLED)                                                       \
  TRACE_EVENT_END(TRACING_CATEGORY_NODE2(fs_dir, sync), TRACE_NAME(syscall),   \
  ##__VA_ARGS__);

DirHandle::DirHandle(Environment* env, Local<Object> obj, uv_dir_t* dir)
    : AsyncWrap(env, obj, AsyncWrap::PROVIDER_DIRHANDLE),
      dir_(dir) {
  MakeWeak();

  dir_->nentries = 0;
  dir_->dirents = nullptr;
}

DirHandle* DirHandle::New(Environment* env, uv_dir_t* dir) {
  Local<Object> obj;
  if (!env->dir_instance_template()
          ->NewInstance(env->context())
          .ToLocal(&obj)) {
    return nullptr;
  }

  return new DirHandle(env, obj, dir);
}

void DirHandle::New(const FunctionCallbackInfo<Value>& args) {
  CHECK(args.IsConstructCall());
}

DirHandle::~DirHandle() {
  CHECK(!closing_);  // We should not be deleting while explicitly closing!
  GCClose();         // Close synchronously and emit warning
  CHECK(closed_);    // We have to be closed at the point
}

void DirHandle::MemoryInfo(MemoryTracker* tracker) const {
  tracker->TrackFieldWithSize("dir", sizeof(*dir_));
}

// Close the directory handle if it hasn't already been closed. A process
// warning will be emitted using a SetImmediate to avoid calling back to
// JS during GC. If closing the fd fails at this point, a fatal exception
// will crash the process immediately.
inline void DirHandle::GCClose() {
  if (closed_) return;
  uv_fs_t req;
  int ret = uv_fs_closedir(nullptr, &req, dir_, nullptr);
  uv_fs_req_cleanup(&req);
  closing_ = false;
  closed_ = true;

  struct err_detail { int ret; };

  err_detail detail { ret };

  if (ret < 0) {
    // Do not unref this
    env()->SetImmediate([detail](Environment* env) {
      const char* msg = "Closing directory handle on garbage collection failed";
      // This exception will end up being fatal for the process because
      // it is being thrown from within the SetImmediate handler and
      // there is no JS stack to bubble it to. In other words, tearing
      // down the process is the only reasonable thing we can do here.
      HandleScope handle_scope(env->isolate());
      env->ThrowUVException(detail.ret, "close", msg);
    });
    return;
  }

  // If the close was successful, we still want to emit a process warning
  // to notify that the file descriptor was gc'd. We want to be noisy about
  // this because not explicitly closing the DirHandle is a bug.

  env()->SetImmediate([](Environment* env) {
    ProcessEmitWarning(env,
                       "Closing directory handle on garbage collection");
  }, CallbackFlags::kUnrefed);
}

void AfterClose(uv_fs_t* req) {
  FSReqBase* req_wrap = FSReqBase::from_req(req);
  FSReqAfterScope after(req_wrap, req);

  if (after.Proceed())
    req_wrap->Resolve(Undefined(req_wrap->env()->isolate()));
}

void DirHandle::Close(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  const int argc = args.Length();
  CHECK_GE(argc, 1);

  DirHandle* dir;
  ASSIGN_OR_RETURN_UNWRAP(&dir, args.Holder());

  dir->closing_ = false;
  dir->closed_ = true;

  FSReqBase* req_wrap_async = GetReqWrap(args, 0);
  if (req_wrap_async != nullptr) {  // close(req)
    AsyncCall(env, req_wrap_async, args, "closedir", UTF8, AfterClose,
              uv_fs_closedir, dir->dir());
  } else {  // close(undefined, ctx)
    CHECK_EQ(argc, 2);
    FSReqWrapSync req_wrap_sync;
    FS_DIR_SYNC_TRACE_BEGIN(closedir);
    SyncCall(env, args[1], &req_wrap_sync, "closedir", uv_fs_closedir,
             dir->dir());
    FS_DIR_SYNC_TRACE_END(closedir);
  }
}

static MaybeLocal<Array> DirentListToArray(
    Environment* env,
    uv_dirent_t* ents,
    int num,
    enum encoding encoding,
    Local<Value>* err_out) {
  MaybeStackBuffer<Local<Value>, 64> entries(num * 2);

  // Return an array of all read filenames.
  int j = 0;
  for (int i = 0; i < num; i++) {
    Local<Value> filename;
    Local<Value> error;
    const size_t namelen = strlen(ents[i].name);
    if (!StringBytes::Encode(env->isolate(),
                             ents[i].name,
                             namelen,
                             encoding,
                             &error).ToLocal(&filename)) {
      *err_out = error;
      return MaybeLocal<Array>();
    }

    entries[j++] = filename;
    entries[j++] = Integer::New(env->isolate(), ents[i].type);
  }

  return Array::New(env->isolate(), entries.out(), j);
}

static void AfterDirRead(uv_fs_t* req) {
  BaseObjectPtr<FSReqBase> req_wrap { FSReqBase::from_req(req) };
  FSReqAfterScope after(req_wrap.get(), req);

  if (!after.Proceed()) {
    return;
  }

  Environment* env = req_wrap->env();
  Isolate* isolate = env->isolate();

  if (req->result == 0) {
    // Done
    Local<Value> done = Null(isolate);
    after.Clear();
    req_wrap->Resolve(done);
    return;
  }

  uv_dir_t* dir = static_cast<uv_dir_t*>(req->ptr);

  Local<Value> error;
  Local<Array> js_array;
  if (!DirentListToArray(env,
                         dir->dirents,
                         static_cast<int>(req->result),
                         req_wrap->encoding(),
                         &error)
           .ToLocal(&js_array)) {
    // Clear libuv resources *before* delivering results to JS land because
    // that can schedule another operation on the same uv_dir_t. Ditto below.
    after.Clear();
    return req_wrap->Reject(error);
  }

  after.Clear();
  req_wrap->Resolve(js_array);
}


void DirHandle::Read(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  Isolate* isolate = env->isolate();

  const int argc = args.Length();
  CHECK_GE(argc, 3);

  const enum encoding encoding = ParseEncoding(isolate, args[0], UTF8);

  DirHandle* dir;
  ASSIGN_OR_RETURN_UNWRAP(&dir, args.Holder());

  CHECK(args[1]->IsNumber());
  uint64_t buffer_size = static_cast<uint64_t>(args[1].As<Number>()->Value());

  if (buffer_size != dir->dirents_.size()) {
    dir->dirents_.resize(buffer_size);
    dir->dir_->nentries = buffer_size;
    dir->dir_->dirents = dir->dirents_.data();
  }

  FSReqBase* req_wrap_async = GetReqWrap(args, 2);
  if (req_wrap_async != nullptr) {  // dir.read(encoding, bufferSize, req)
    AsyncCall(env, req_wrap_async, args, "readdir", encoding,
              AfterDirRead, uv_fs_readdir, dir->dir());
  } else {  // dir.read(encoding, bufferSize, undefined, ctx)
    CHECK_EQ(argc, 4);
    FSReqWrapSync req_wrap_sync;
    FS_DIR_SYNC_TRACE_BEGIN(readdir);
    int err = SyncCall(env, args[3], &req_wrap_sync, "readdir", uv_fs_readdir,
                       dir->dir());
    FS_DIR_SYNC_TRACE_END(readdir);
    if (err < 0) {
      return;  // syscall failed, no need to continue, error info is in ctx
    }

    if (req_wrap_sync.req.result == 0) {
      // Done
      Local<Value> done = Null(isolate);
      args.GetReturnValue().Set(done);
      return;
    }

    CHECK_GE(req_wrap_sync.req.result, 0);

    Local<Value> error;
    Local<Array> js_array;
    if (!DirentListToArray(env,
                           dir->dir()->dirents,
                           static_cast<int>(req_wrap_sync.req.result),
                           encoding,
                           &error)
             .ToLocal(&js_array)) {
      Local<Object> ctx = args[2].As<Object>();
      USE(ctx->Set(env->context(), env->error_string(), error));
      return;
    }

    args.GetReturnValue().Set(js_array);
  }
}

void AfterOpenDir(uv_fs_t* req) {
  FSReqBase* req_wrap = FSReqBase::from_req(req);
  FSReqAfterScope after(req_wrap, req);

  if (!after.Proceed()) {
    return;
  }

  Environment* env = req_wrap->env();

  uv_dir_t* dir = static_cast<uv_dir_t*>(req->ptr);
  DirHandle* handle = DirHandle::New(env, dir);

  req_wrap->Resolve(handle->object().As<Value>());
}

static void OpenDir(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  Isolate* isolate = env->isolate();

  const int argc = args.Length();
  CHECK_GE(argc, 3);

  BufferValue path(isolate, args[0]);
  CHECK_NOT_NULL(*path);

  const enum encoding encoding = ParseEncoding(isolate, args[1], UTF8);

  FSReqBase* req_wrap_async = GetReqWrap(args, 2);
  if (req_wrap_async != nullptr) {  // openDir(path, encoding, req)
    AsyncCall(env, req_wrap_async, args, "opendir", encoding, AfterOpenDir,
              uv_fs_opendir, *path);
  } else {  // openDir(path, encoding, undefined, ctx)
    CHECK_EQ(argc, 4);
    FSReqWrapSync req_wrap_sync;
    FS_DIR_SYNC_TRACE_BEGIN(opendir);
    int result = SyncCall(env, args[3], &req_wrap_sync, "opendir",
                          uv_fs_opendir, *path);
    FS_DIR_SYNC_TRACE_END(opendir);
    if (result < 0) {
      return;  // syscall failed, no need to continue, error info is in ctx
    }

    uv_fs_t* req = &req_wrap_sync.req;
    uv_dir_t* dir = static_cast<uv_dir_t*>(req->ptr);
    DirHandle* handle = DirHandle::New(env, dir);

    args.GetReturnValue().Set(handle->object().As<Value>());
  }
}

void Initialize(Local<Object> target,
                Local<Value> unused,
                Local<Context> context,
                void* priv) {
  Environment* env = Environment::GetCurrent(context);
  Isolate* isolate = env->isolate();

  SetMethod(context, target, "opendir", OpenDir);

  // Create FunctionTemplate for DirHandle
  Local<FunctionTemplate> dir = NewFunctionTemplate(isolate, DirHandle::New);
  dir->Inherit(AsyncWrap::GetConstructorTemplate(env));
  SetProtoMethod(isolate, dir, "read", DirHandle::Read);
  SetProtoMethod(isolate, dir, "close", DirHandle::Close);
  Local<ObjectTemplate> dirt = dir->InstanceTemplate();
  dirt->SetInternalFieldCount(DirHandle::kInternalFieldCount);
  SetConstructorFunction(context, target, "DirHandle", dir);
  env->set_dir_instance_template(dirt);
}

void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
  registry->Register(OpenDir);
  registry->Register(DirHandle::New);
  registry->Register(DirHandle::Read);
  registry->Register(DirHandle::Close);
}

}  // namespace fs_dir

}  // end namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(fs_dir, node::fs_dir::Initialize)
NODE_MODULE_EXTERNAL_REFERENCE(fs_dir, node::fs_dir::RegisterExternalReferences)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			#include "node_dir.h"
2			#include "node_external_reference.h"
3			#include "node_file-inl.h"
4			#include "node_process-inl.h"
5			#include "memory_tracker-inl.h"
6			#include "util.h"
7
8			#include "tracing/trace_event.h"
9
10			#include "string_bytes.h"
11
12			#include <fcntl.h>
13			#include <sys/types.h>
14			#include <sys/stat.h>
15			#include <cstring>
16			#include <cerrno>
17			#include <climits>
18
19			#include <memory>
20
21			namespace node {
22
23			namespace fs_dir {
24
25			using fs::FSReqAfterScope;
26			using fs::FSReqBase;
27			using fs::FSReqWrapSync;
28			using fs::GetReqWrap;
29
30			using v8::Array;
31			using v8::Context;
32			using v8::FunctionCallbackInfo;
33			using v8::FunctionTemplate;
34			using v8::HandleScope;
35			using v8::Integer;
36			using v8::Isolate;
37			using v8::Local;
38			using v8::MaybeLocal;
39			using v8::Null;
40			using v8::Number;
41			using v8::Object;
42			using v8::ObjectTemplate;
43			using v8::Value;
44
45			#define TRACE_NAME(name) "fs_dir.sync." #name
46			#define GET_TRACE_ENABLED \
47			(*TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED \
48			(TRACING_CATEGORY_NODE2(fs_dir, sync)) != 0)
49			#define FS_DIR_SYNC_TRACE_BEGIN(syscall, ...) \
50			if (GET_TRACE_ENABLED) \
51			TRACE_EVENT_BEGIN(TRACING_CATEGORY_NODE2(fs_dir, sync), TRACE_NAME(syscall), \
52			##__VA_ARGS__);
53			#define FS_DIR_SYNC_TRACE_END(syscall, ...) \
54			if (GET_TRACE_ENABLED) \
55			TRACE_EVENT_END(TRACING_CATEGORY_NODE2(fs_dir, sync), TRACE_NAME(syscall), \
56			##__VA_ARGS__);
57
58		178	DirHandle::DirHandle(Environment* env, Local<Object> obj, uv_dir_t* dir)
59			: AsyncWrap(env, obj, AsyncWrap::PROVIDER_DIRHANDLE),
60		178	dir_(dir) {
61		178	MakeWeak();
62
63		178	dir_->nentries = 0;
64		178	dir_->dirents = nullptr;
65		178	}
66
67		178	DirHandle* DirHandle::New(Environment* env, uv_dir_t* dir) {
68			Local<Object> obj;
69		178	if (!env->dir_instance_template()
70		178	->NewInstance(env->context())
71	✗✓	178	.ToLocal(&obj)) {
72			return nullptr;
73			}
74
75		178	return new DirHandle(env, obj, dir);
76			}
77
78			void DirHandle::New(const FunctionCallbackInfo<Value>& args) {
79			CHECK(args.IsConstructCall());
80			}
81
82		712	DirHandle::~DirHandle() {
83	✗✓	356	CHECK(!closing_); // We should not be deleting while explicitly closing!
84		356	GCClose(); // Close synchronously and emit warning
85	✗✓	356	CHECK(closed_); // We have to be closed at the point
86		712	}
87
88			void DirHandle::MemoryInfo(MemoryTracker* tracker) const {
89			tracker->TrackFieldWithSize("dir", sizeof(*dir_));
90			}
91
92			// Close the directory handle if it hasn't already been closed. A process
93			// warning will be emitted using a SetImmediate to avoid calling back to
94			// JS during GC. If closing the fd fails at this point, a fatal exception
95			// will crash the process immediately.
96		178	inline void DirHandle::GCClose() {
97	✓✓	178	if (closed_) return;
98			uv_fs_t req;
99		12	int ret = uv_fs_closedir(nullptr, &req, dir_, nullptr);
100		12	uv_fs_req_cleanup(&req);
101		12	closing_ = false;
102		12	closed_ = true;
103
104			struct err_detail { int ret; };
105
106		12	err_detail detail { ret };
107
108	✗✓	12	if (ret < 0) {
109			// Do not unref this
110			env()->SetImmediate([detail](Environment* env) {
111			const char* msg = "Closing directory handle on garbage collection failed";
112			// This exception will end up being fatal for the process because
113			// it is being thrown from within the SetImmediate handler and
114			// there is no JS stack to bubble it to. In other words, tearing
115			// down the process is the only reasonable thing we can do here.
116			HandleScope handle_scope(env->isolate());
117			env->ThrowUVException(detail.ret, "close", msg);
118			});
119			return;
120			}
121
122			// If the close was successful, we still want to emit a process warning
123			// to notify that the file descriptor was gc'd. We want to be noisy about
124			// this because not explicitly closing the DirHandle is a bug.
125
126		12	env()->SetImmediate([](Environment* env) {
127			ProcessEmitWarning(env,
128		2	"Closing directory handle on garbage collection");
129		2	}, CallbackFlags::kUnrefed);
130			}
131
132		82	void AfterClose(uv_fs_t* req) {
133		82	FSReqBase* req_wrap = FSReqBase::from_req(req);
134		164	FSReqAfterScope after(req_wrap, req);
135
136	✓✗	82	if (after.Proceed())
137		164	req_wrap->Resolve(Undefined(req_wrap->env()->isolate()));
138		82	}
139
140		166	void DirHandle::Close(const FunctionCallbackInfo<Value>& args) {
141		166	Environment* env = Environment::GetCurrent(args);
142
143		166	const int argc = args.Length();
144	✗✓	166	CHECK_GE(argc, 1);
145
146			DirHandle* dir;
147	✗✓	166	ASSIGN_OR_RETURN_UNWRAP(&dir, args.Holder());
148
149		166	dir->closing_ = false;
150		166	dir->closed_ = true;
151
152		166	FSReqBase* req_wrap_async = GetReqWrap(args, 0);
153	✓✓	166	if (req_wrap_async != nullptr) { // close(req)
154		82	AsyncCall(env, req_wrap_async, args, "closedir", UTF8, AfterClose,
155			uv_fs_closedir, dir->dir());
156			} else { // close(undefined, ctx)
157	✗✓	84	CHECK_EQ(argc, 2);
158		168	FSReqWrapSync req_wrap_sync;
159	✗✓✗✗ ✗✗	84	FS_DIR_SYNC_TRACE_BEGIN(closedir);
160		168	SyncCall(env, args[1], &req_wrap_sync, "closedir", uv_fs_closedir,
161			dir->dir());
162	✗✓✗✗ ✗✗	84	FS_DIR_SYNC_TRACE_END(closedir);
163			}
164			}
165
166		155	static MaybeLocal<Array> DirentListToArray(
167			Environment* env,
168			uv_dirent_t* ents,
169			int num,
170			enum encoding encoding,
171			Local<Value>* err_out) {
172		310	MaybeStackBuffer<Local<Value>, 64> entries(num * 2);
173
174			// Return an array of all read filenames.
175		155	int j = 0;
176	✓✓	646	for (int i = 0; i < num; i++) {
177			Local<Value> filename;
178			Local<Value> error;
179		491	const size_t namelen = strlen(ents[i].name);
180		491	if (!StringBytes::Encode(env->isolate(),
181		491	ents[i].name,
182			namelen,
183			encoding,
184	✗✓	982	&error).ToLocal(&filename)) {
185			*err_out = error;
186			return MaybeLocal<Array>();
187			}
188
189		491	entries[j++] = filename;
190		982	entries[j++] = Integer::New(env->isolate(), ents[i].type);
191			}
192
193		310	return Array::New(env->isolate(), entries.out(), j);
194			}
195
196		144	static void AfterDirRead(uv_fs_t* req) {
197		144	BaseObjectPtr<FSReqBase> req_wrap { FSReqBase::from_req(req) };
198		144	FSReqAfterScope after(req_wrap.get(), req);
199
200	✗✓	144	if (!after.Proceed()) {
201			return;
202			}
203
204		144	Environment* env = req_wrap->env();
205		144	Isolate* isolate = env->isolate();
206
207	✓✓	144	if (req->result == 0) {
208			// Done
209		64	Local<Value> done = Null(isolate);
210		64	after.Clear();
211		64	req_wrap->Resolve(done);
212		64	return;
213			}
214
215		80	uv_dir_t* dir = static_cast<uv_dir_t*>(req->ptr);
216
217			Local<Value> error;
218			Local<Array> js_array;
219		80	if (!DirentListToArray(env,
220			dir->dirents,
221		80	static_cast<int>(req->result),
222			req_wrap->encoding(),
223		80	&error)
224	✗✓	80	.ToLocal(&js_array)) {
225			// Clear libuv resources before delivering results to JS land because
226			// that can schedule another operation on the same uv_dir_t. Ditto below.
227			after.Clear();
228			return req_wrap->Reject(error);
229			}
230
231		80	after.Clear();
232		80	req_wrap->Resolve(js_array);
233			}
234
235
236		291	void DirHandle::Read(const FunctionCallbackInfo<Value>& args) {
237		291	Environment* env = Environment::GetCurrent(args);
238		291	Isolate* isolate = env->isolate();
239
240		291	const int argc = args.Length();
241	✗✓	291	CHECK_GE(argc, 3);
242
243		291	const enum encoding encoding = ParseEncoding(isolate, args[0], UTF8);
244
245			DirHandle* dir;
246	✗✓	363	ASSIGN_OR_RETURN_UNWRAP(&dir, args.Holder());
247
248	✗✓	291	CHECK(args[1]->IsNumber());
249		582	uint64_t buffer_size = static_cast<uint64_t>(args[1].As<Number>()->Value());
250
251	✓✓	291	if (buffer_size != dir->dirents_.size()) {
252		163	dir->dirents_.resize(buffer_size);
253		163	dir->dir_->nentries = buffer_size;
254		163	dir->dir_->dirents = dir->dirents_.data();
255			}
256
257		291	FSReqBase* req_wrap_async = GetReqWrap(args, 2);
258	✓✓	291	if (req_wrap_async != nullptr) { // dir.read(encoding, bufferSize, req)
259		144	AsyncCall(env, req_wrap_async, args, "readdir", encoding,
260			AfterDirRead, uv_fs_readdir, dir->dir());
261			} else { // dir.read(encoding, bufferSize, undefined, ctx)
262	✗✓	147	CHECK_EQ(argc, 4);
263		147	FSReqWrapSync req_wrap_sync;
264	✗✓✗✗ ✗✗	147	FS_DIR_SYNC_TRACE_BEGIN(readdir);
265		294	int err = SyncCall(env, args[3], &req_wrap_sync, "readdir", uv_fs_readdir,
266			dir->dir());
267	✗✓✗✗ ✗✗	147	FS_DIR_SYNC_TRACE_END(readdir);
268	✗✓	147	if (err < 0) {
269			return; // syscall failed, no need to continue, error info is in ctx
270			}
271
272	✓✓	147	if (req_wrap_sync.req.result == 0) {
273			// Done
274		72	Local<Value> done = Null(isolate);
275		72	args.GetReturnValue().Set(done);
276		72	return;
277			}
278
279	✗✓	75	CHECK_GE(req_wrap_sync.req.result, 0);
280
281			Local<Value> error;
282			Local<Array> js_array;
283		75	if (!DirentListToArray(env,
284		75	dir->dir()->dirents,
285		75	static_cast<int>(req_wrap_sync.req.result),
286			encoding,
287		75	&error)
288	✗✓	75	.ToLocal(&js_array)) {
289			Local<Object> ctx = args[2].As<Object>();
290			USE(ctx->Set(env->context(), env->error_string(), error));
291			return;
292			}
293
294		150	args.GetReturnValue().Set(js_array);
295			}
296			}
297
298		85	void AfterOpenDir(uv_fs_t* req) {
299		85	FSReqBase* req_wrap = FSReqBase::from_req(req);
300		85	FSReqAfterScope after(req_wrap, req);
301
302	✓✓	85	if (!after.Proceed()) {
303		1	return;
304			}
305
306		84	Environment* env = req_wrap->env();
307
308		84	uv_dir_t* dir = static_cast<uv_dir_t*>(req->ptr);
309		84	DirHandle* handle = DirHandle::New(env, dir);
310
311		168	req_wrap->Resolve(handle->object().As<Value>());
312			}
313
314		180	static void OpenDir(const FunctionCallbackInfo<Value>& args) {
315		180	Environment* env = Environment::GetCurrent(args);
316		180	Isolate* isolate = env->isolate();
317
318		180	const int argc = args.Length();
319	✗✓	180	CHECK_GE(argc, 3);
320
321		180	BufferValue path(isolate, args[0]);
322	✗✓	180	CHECK_NOT_NULL(*path);
323
324		180	const enum encoding encoding = ParseEncoding(isolate, args[1], UTF8);
325
326		180	FSReqBase* req_wrap_async = GetReqWrap(args, 2);
327	✓✓	180	if (req_wrap_async != nullptr) { // openDir(path, encoding, req)
328		85	AsyncCall(env, req_wrap_async, args, "opendir", encoding, AfterOpenDir,
329			uv_fs_opendir, *path);
330			} else { // openDir(path, encoding, undefined, ctx)
331	✗✓	95	CHECK_EQ(argc, 4);
332		95	FSReqWrapSync req_wrap_sync;
333	✗✓✗✗ ✗✗	95	FS_DIR_SYNC_TRACE_BEGIN(opendir);
334		190	int result = SyncCall(env, args[3], &req_wrap_sync, "opendir",
335			uv_fs_opendir, *path);
336	✗✓✗✗ ✗✗	95	FS_DIR_SYNC_TRACE_END(opendir);
337	✓✓	95	if (result < 0) {
338		1	return; // syscall failed, no need to continue, error info is in ctx
339			}
340
341		94	uv_fs_t* req = &req_wrap_sync.req;
342		94	uv_dir_t* dir = static_cast<uv_dir_t*>(req->ptr);
343		94	DirHandle* handle = DirHandle::New(env, dir);
344
345		188	args.GetReturnValue().Set(handle->object().As<Value>());
346			}
347			}
348
349		772	void Initialize(Local<Object> target,
350			Local<Value> unused,
351			Local<Context> context,
352			void* priv) {
353		772	Environment* env = Environment::GetCurrent(context);
354		772	Isolate* isolate = env->isolate();
355
356		772	SetMethod(context, target, "opendir", OpenDir);
357
358			// Create FunctionTemplate for DirHandle
359		772	Local<FunctionTemplate> dir = NewFunctionTemplate(isolate, DirHandle::New);
360		772	dir->Inherit(AsyncWrap::GetConstructorTemplate(env));
361		772	SetProtoMethod(isolate, dir, "read", DirHandle::Read);
362		772	SetProtoMethod(isolate, dir, "close", DirHandle::Close);
363		772	Local<ObjectTemplate> dirt = dir->InstanceTemplate();
364		772	dirt->SetInternalFieldCount(DirHandle::kInternalFieldCount);
365		772	SetConstructorFunction(context, target, "DirHandle", dir);
366		772	env->set_dir_instance_template(dirt);
367		772	}
368
369		5345	void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
370		5345	registry->Register(OpenDir);
371		5345	registry->Register(DirHandle::New);
372		5345	registry->Register(DirHandle::Read);
373		5345	registry->Register(DirHandle::Close);
374		5345	}
375
376			} // namespace fs_dir
377
378			} // end namespace node
379
380		5417	NODE_MODULE_CONTEXT_AWARE_INTERNAL(fs_dir, node::fs_dir::Initialize)
381		5345	NODE_MODULE_EXTERNAL_REFERENCE(fs_dir, node::fs_dir::RegisterExternalReferences)