fs: improve error performance of fchownSync

Author: evelez7

lib/fs.js

@@ -2022,6 +2022,9 @@ function fchown(fd, uid, gid, callback) {
  * @returns {void}
  */
 function fchownSync(fd, uid, gid) {
+  fd = getValidatedFd(fd);
+  validateInteger(uid, 'uid', -1, kMaxUserId);
+  validateInteger(gid, 'gid', -1, kMaxUserId);
   return syncFs.fchown(fd, uid, gid);
 }
 

lib/internal/fs/sync.js

@@ -9,7 +9,7 @@ const {
   getStatFsFromBinding,
   getValidatedFd,
 } = require('internal/fs/utils');
-const { parseFileMode, isInt32, validateInteger } = require('internal/validators');
+const { parseFileMode, isInt32 } = require('internal/validators');
 
 const binding = internalBinding('fs');
 
@@ -94,9 +94,6 @@ function unlink(path) {
 }
 
 function fchown(fd, uid, gid) {
-  fd = getValidatedFd(fd);
-  validateInteger(uid, 'uid', -1);
-  validateInteger(gid, 'gid', -1);
   return binding.fchownSync(fd, uid, gid);
 }
 

src/node_file.cc

@@ -2814,7 +2814,7 @@ static void FChownSync(const FunctionCallbackInfo<Value>& args) {
   CHECK_GE(argc, 3);
 
   CHECK(args[0]->IsInt32());
-  const uv_gid_t fd = static_cast<uv_gid_t>(args[0].As<Int32>()->Value());
+  const uv_file fd = static_cast<uv_file>(args[0].As<Int32>()->Value());
 
   CHECK(args[1]->IsInt32());
   const uv_uid_t uid = static_cast<uv_uid_t>(args[1].As<Int32>()->Value());