fs: throw errors from fs.fdatasyncSync in JS

PR-URL: https://github.com/nodejs/node/pull/18348
Refs: https://github.com/nodejs/node/issues/18106
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 11 insertions, 6 deletions

diff --git a/src/node_file.cc b/src/node_file.cc
index 10149b403e..6188da2448 100644
--- a/src/node_file.cc
+++ b/src/node_file.cc
@@ -735,16 +735,21 @@ static void FTruncate(const FunctionCallbackInfo<Value>& args) {
 static void Fdatasync(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
 
-  CHECK(args[0]->IsInt32());
+  const int argc = args.Length();
+  CHECK_GE(argc, 2);
 
-  int fd = args[0]->Int32Value();
+  CHECK(args[0]->IsInt32());
+  const int fd = args[0]->As<Int32>()->Value();
 
-  if (args[1]->IsObject()) {
-    CHECK_EQ(args.Length(), 2);
+  if (args[1]->IsObject()) {  // fdatasync(fd, req)
+    CHECK_EQ(argc, 2);
     AsyncCall(env, args, "fdatasync", UTF8, AfterNoArgs,
               uv_fs_fdatasync, fd);
-  } else {
-    SYNC_CALL(fdatasync, 0, fd)
+  } else {  // fdatasync(fd, undefined, ctx)
+    CHECK_EQ(argc, 3);
+    fs_req_wrap req_wrap;
+    SyncCall(env, args[2], &req_wrap, "fdatasync",
+             uv_fs_fdatasync, fd);
   }
 }