fs: throw openSync errors in JS

PR-URL: #18871
Refs: #18106
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: joyeecheung

lib/fs.js

@@ -521,8 +521,12 @@ fs.openSync = function(path, flags, mode) {
   validatePath(path);
   validateUint32(mode, 'mode');
 
-  return binding.open(pathModule.toNamespacedPath(path),
-                      stringToFlags(flags), mode);
+  const ctx = { path };
+  const result = binding.open(pathModule.toNamespacedPath(path),
+                              stringToFlags(flags), mode,
+                              undefined, ctx);
+  handleErrorFromBinding(ctx);
+  return result;
 };
 
 fs.read = function(fd, buffer, offset, length, position, callback) {

src/node_file.cc

@@ -1169,25 +1169,29 @@ static void ReadDir(const FunctionCallbackInfo<Value>& args) {
 
 static void Open(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
-  Local<Context> context = env->context();
 
-  CHECK_GE(args.Length(), 3);
-  CHECK(args[1]->IsInt32());
-  CHECK(args[2]->IsInt32());
+  const int argc = args.Length();
+  CHECK_GE(argc, 3);
 
   BufferValue path(env->isolate(), args[0]);
   CHECK_NE(*path, nullptr);
 
-  int flags = args[1]->Int32Value(context).ToChecked();
-  int mode = args[2]->Int32Value(context).ToChecked();
+  CHECK(args[1]->IsInt32());
+  const int flags = args[1].As<Int32>()->Value();
+
+  CHECK(args[2]->IsInt32());
+  const int mode = args[2].As<Int32>()->Value();
 
   FSReqBase* req_wrap = GetReqWrap(env, args[3]);
-  if (req_wrap != nullptr) {
+  if (req_wrap != nullptr) {  // open(path, flags, mode, req)
     AsyncCall(env, req_wrap, args, "open", UTF8, AfterInteger,
               uv_fs_open, *path, flags, mode);
-  } else {
-    SYNC_CALL(open, *path, *path, flags, mode)
-    args.GetReturnValue().Set(SYNC_RESULT);
+  } else {  // open(path, flags, mode, undefined, ctx)
+    CHECK_EQ(argc, 5);
+    fs_req_wrap req_wrap;
+    int result = SyncCall(env, args[4], &req_wrap, "open",
+                          uv_fs_open, *path, flags, mode);
+    args.GetReturnValue().Set(result);
   }
 }