Revert "fs,win: fix bug in paths with trailing slashes"

This reverts commit 00b2f07.

PR-URL: #55527
Fixes: #17801
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Stefan Stojanovic <stefan.stojanovic@janeasystems.com>

lib/fs.js

@@ -385,11 +385,7 @@ function readFile(path, options, callback) {
   const req = new FSReqCallback();
   req.context = context;
   req.oncomplete = readFileAfterOpen;
-  binding.open(
-    getValidatedPath(path, 'path', { expectFile: true, syscall: 'read' }),
-    flagsNumber,
-    0o666,
-    req);
+  binding.open(getValidatedPath(path), flagsNumber, 0o666, req);
 }
 
 function tryStatSync(fd, isUserFd) {
@@ -441,9 +437,7 @@ function readFileSync(path, options) {
 
   if (options.encoding === 'utf8' || options.encoding === 'utf-8') {
     if (!isInt32(path)) {
-      path = getValidatedPath(path,
-                              'path',
-                              { expectFile: true, syscall: 'read' });
+      path = getValidatedPath(path);
     }
     return binding.readFileUtf8(path, stringToFlags(options.flag));
   }
@@ -537,7 +531,7 @@ function closeSync(fd) {
  * @returns {void}
  */
 function open(path, flags, mode, callback) {
-  path = getValidatedPath(path, 'path', { expectFile: true, syscall: 'open' });
+  path = getValidatedPath(path);
   if (arguments.length < 3) {
     callback = flags;
     flags = 'r';
@@ -566,7 +560,7 @@ function open(path, flags, mode, callback) {
  */
 function openSync(path, flags, mode) {
   return binding.open(
-    getValidatedPath(path, 'path', { expectFile: true, syscall: 'open' }),
+    getValidatedPath(path),
     stringToFlags(flags),
     parseFileMode(mode, 'mode', 0o666),
   );
@@ -2345,9 +2339,7 @@ function writeFileSync(path, data, options) {
   // C++ fast path for string data and UTF8 encoding
   if (typeof data === 'string' && (options.encoding === 'utf8' || options.encoding === 'utf-8')) {
     if (!isInt32(path)) {
-      path = getValidatedPath(path,
-                              'path',
-                              { expectFile: true, syscall: 'write' });
+      path = getValidatedPath(path);
     }
 
     return binding.writeFileUtf8(
@@ -2992,8 +2984,8 @@ function copyFile(src, dest, mode, callback) {
     mode = 0;
   }
 
-  src = getValidatedPath(src, 'src', { expectFile: true, syscall: 'cp' });
-  dest = getValidatedPath(dest, 'dest', { expectFile: true, syscall: 'cp' });
+  src = getValidatedPath(src, 'src');
+  dest = getValidatedPath(dest, 'dest');
   callback = makeCallback(callback);
 
   const req = new FSReqCallback();
@@ -3011,8 +3003,8 @@ function copyFile(src, dest, mode, callback) {
  */
 function copyFileSync(src, dest, mode) {
   binding.copyFile(
-    getValidatedPath(src, 'src', { expectFile: true, syscall: 'cp' }),
-    getValidatedPath(dest, 'dest', { expectFile: true, syscall: 'cp' }),
+    getValidatedPath(src, 'src'),
+    getValidatedPath(dest, 'dest'),
     mode,
   );
 }

lib/internal/fs/promises.js

@@ -620,8 +620,8 @@ async function cp(src, dest, options) {
 async function copyFile(src, dest, mode) {
   return await PromisePrototypeThen(
     binding.copyFile(
-      getValidatedPath(src, 'src', { expectFile: true, syscall: 'cp' }),
-      getValidatedPath(dest, 'dest', { expectFile: true, syscall: 'cp' }),
+      getValidatedPath(src, 'src'),
+      getValidatedPath(dest, 'dest'),
       mode,
       kUsePromises,
     ),
@@ -633,7 +633,7 @@ async function copyFile(src, dest, mode) {
 // Note that unlike fs.open() which uses numeric file descriptors,
 // fsPromises.open() uses the fs.FileHandle class.
 async function open(path, flags, mode) {
-  path = getValidatedPath(path, 'path', { expectFile: true, syscall: 'open' });
+  path = getValidatedPath(path);
   const flagsNumber = stringToFlags(flags);
   mode = parseFileMode(mode, 'mode', 0o666);
   return new FileHandle(await PromisePrototypeThen(

lib/internal/fs/streams.js

@@ -182,7 +182,7 @@ function ReadStream(path, options) {
     this.flags = options.flags === undefined ? 'r' : options.flags;
     this.mode = options.mode === undefined ? 0o666 : options.mode;
 
-    validatePath(this.path, 'path', { expectFile: true, syscall: 'read' });
+    validatePath(this.path);
   } else {
     this.fd = getValidatedFd(importFd(this, options));
   }
@@ -337,7 +337,7 @@ function WriteStream(path, options) {
     this.flags = options.flags === undefined ? 'w' : options.flags;
     this.mode = options.mode === undefined ? 0o666 : options.mode;
 
-    validatePath(this.path, 'path', { expectFile: true, syscall: 'write' });
+    validatePath(this.path);
   } else {
     this.fd = getValidatedFd(importFd(this, options));
   }

lib/internal/fs/utils.js

@@ -710,38 +710,13 @@ const validateOffsetLengthWrite = hideStackFrames(
   },
 );
 
-/**
- * Validates the given path based on the expected type (file or directory).
- * @param {string} path - The path to validate.
- * @param {string} [propName='path'] - The name of the property being validated.
- * @param {object} options - Additional options for validation.
- * @param {boolean} [options.expectFile] - If true, expects the path to be a file.
- * @param {string} [options.syscall] - The name of the syscall.
- * @throws {TypeError} Throws if the path is not a string, Uint8Array, or URL without null bytes.
- * @throws {Error} Throws if the path does not meet the expected type (file).
- */
-const validatePath = hideStackFrames((path, propName = 'path', options) => {
+const validatePath = hideStackFrames((path, propName = 'path') => {
   if (typeof path !== 'string' && !isUint8Array(path)) {
     throw new ERR_INVALID_ARG_TYPE.HideStackFramesError(propName, ['string', 'Buffer', 'URL'], path);
   }
 
   const pathIsString = typeof path === 'string';
   const pathIsUint8Array = isUint8Array(path);
-  if (options?.expectFile) {
-    const lastCharacter = path[path.length - 1];
-    if (
-      lastCharacter === '/' || lastCharacter === 47 ||
-      (isWindows && (lastCharacter === '\\' || lastCharacter === 92))
-    ) {
-      throw new ERR_FS_EISDIR({
-        code: 'ERR_FS_EISDIR',
-        message: 'is a directory',
-        path,
-        syscall: options.syscall,
-        errno: ERR_FS_EISDIR,
-      });
-    }
-  }
 
   // We can only perform meaningful checks on strings and Uint8Arrays.
   if ((!pathIsString && !pathIsUint8Array) ||
@@ -757,21 +732,11 @@ const validatePath = hideStackFrames((path, propName = 'path', options) => {
   );
 });
 
-/**
- * Validates and returns the given file URL or path based on the expected type (file or directory).
- * @param {string|URL} fileURLOrPath - The file URL or path to validate.
- * @param {string} [propName='path'] - The name of the property being validated.
- * @param {object} options - Additional options for validation.
- * @param {boolean} [options.expectFile] - If true, expects the path to be a file.
- * @param {string} [options.syscall] - The name of the syscall.
- * @returns {string} The validated path.
- */
-const getValidatedPath =
-  hideStackFrames((fileURLOrPath, propName = 'path', options) => {
-    const path = toPathIfFileURL(fileURLOrPath);
-    validatePath(path, propName, options);
-    return path;
-  });
+const getValidatedPath = hideStackFrames((fileURLOrPath, propName = 'path') => {
+  const path = toPathIfFileURL(fileURLOrPath);
+  validatePath(path, propName);
+  return path;
+});
 
 const getValidatedFd = hideStackFrames((fd, propName = 'fd') => {
   if (ObjectIs(fd, -0)) {