7 files changed, 25 insertions, 13 deletions
diff --git a/ext/node/polyfills/_fs/_fs_fdatasync.ts b/ext/node/polyfills/_fs/_fs_fdatasync.ts
index 41990b070..0c3f50f1c 100644
--- a/ext/node/polyfills/_fs/_fs_fdatasync.ts
+++ b/ext/node/polyfills/_fs/_fs_fdatasync.ts
@@ -10,9 +10,12 @@ export function fdatasync(
   fd: number,
   callback: CallbackWithError,
 ) {
-  new FsFile(fd).syncData().then(() => callback(null), callback);
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).syncData().then(
+    () => callback(null),
+    callback,
+  );
 }
 
 export function fdatasyncSync(fd: number) {
-  new FsFile(fd).syncDataSync();
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).syncDataSync();
 }
diff --git a/ext/node/polyfills/_fs/_fs_fstat.ts b/ext/node/polyfills/_fs/_fs_fstat.ts
index fe97235bf..c1722487e 100644
--- a/ext/node/polyfills/_fs/_fs_fstat.ts
+++ b/ext/node/polyfills/_fs/_fs_fstat.ts
@@ -41,7 +41,7 @@ export function fstat(
 
   if (!callback) throw new Error("No callback function supplied");
 
-  new FsFile(fd).stat().then(
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).stat().then(
     (stat) => callback(null, CFISBIS(stat, options.bigint)),
     (err) => callback(err),
   );
@@ -60,6 +60,6 @@ export function fstatSync(
   fd: number,
   options?: statOptions,
 ): Stats | BigIntStats {
-  const origin = new FsFile(fd).statSync();
+  const origin = new FsFile(fd, Symbol.for("Deno.internal.FsFile")).statSync();
   return CFISBIS(origin, options?.bigint || false);
 }
diff --git a/ext/node/polyfills/_fs/_fs_fsync.ts b/ext/node/polyfills/_fs/_fs_fsync.ts
index 942aecf6a..75d4b3756 100644
--- a/ext/node/polyfills/_fs/_fs_fsync.ts
+++ b/ext/node/polyfills/_fs/_fs_fsync.ts
@@ -10,9 +10,12 @@ export function fsync(
   fd: number,
   callback: CallbackWithError,
 ) {
-  new FsFile(fd).sync().then(() => callback(null), callback);
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).sync().then(
+    () => callback(null),
+    callback,
+  );
 }
 
 export function fsyncSync(fd: number) {
-  new FsFile(fd).syncSync();
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).syncSync();
 }
diff --git a/ext/node/polyfills/_fs/_fs_ftruncate.ts b/ext/node/polyfills/_fs/_fs_ftruncate.ts
index 71186e868..92af46f52 100644
--- a/ext/node/polyfills/_fs/_fs_ftruncate.ts
+++ b/ext/node/polyfills/_fs/_fs_ftruncate.ts
@@ -20,9 +20,12 @@ export function ftruncate(
 
   if (!callback) throw new Error("No callback function supplied");
 
-  new FsFile(fd).truncate(len).then(() => callback(null), callback);
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).truncate(len).then(
+    () => callback(null),
+    callback,
+  );
 }
 
 export function ftruncateSync(fd: number, len?: number) {
-  new FsFile(fd).truncateSync(len);
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).truncateSync(len);
 }
diff --git a/ext/node/polyfills/_fs/_fs_futimes.ts b/ext/node/polyfills/_fs/_fs_futimes.ts
index 9bd41e114..cc4e35b0b 100644
--- a/ext/node/polyfills/_fs/_fs_futimes.ts
+++ b/ext/node/polyfills/_fs/_fs_futimes.ts
@@ -40,7 +40,10 @@ export function futimes(
   mtime = getValidTime(mtime, "mtime");
 
   // TODO(@littledivy): Treat `fd` as real file descriptor.
-  new FsFile(fd).utime(atime, mtime).then(() => callback(null), callback);
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).utime(atime, mtime).then(
+    () => callback(null),
+    callback,
+  );
 }
 
 export function futimesSync(
@@ -52,5 +55,5 @@ export function futimesSync(
   mtime = getValidTime(mtime, "mtime");
 
   // TODO(@littledivy): Treat `fd` as real file descriptor.
-  new FsFile(fd).utimeSync(atime, mtime);
+  new FsFile(fd, Symbol.for("Deno.internal.FsFile")).utimeSync(atime, mtime);
 }
diff --git a/ext/node/polyfills/_fs/_fs_readFile.ts b/ext/node/polyfills/_fs/_fs_readFile.ts
index de1a2a30d..0f05ee167 100644
--- a/ext/node/polyfills/_fs/_fs_readFile.ts
+++ b/ext/node/polyfills/_fs/_fs_readFile.ts
@@ -73,7 +73,7 @@ export function readFile(
 
   let p: Promise<Uint8Array>;
   if (path instanceof FileHandle) {
-    const fsFile = new FsFile(path.fd);
+    const fsFile = new FsFile(path.fd, Symbol.for("Deno.internal.FsFile"));
     p = readAll(fsFile);
   } else {
     p = Deno.readFile(path);
diff --git a/ext/node/polyfills/_fs/_fs_writeFile.ts b/ext/node/polyfills/_fs/_fs_writeFile.ts
index 40d368566..60b31897e 100644
--- a/ext/node/polyfills/_fs/_fs_writeFile.ts
+++ b/ext/node/polyfills/_fs/_fs_writeFile.ts
@@ -74,7 +74,7 @@ export function writeFile(
   (async () => {
     try {
       file = isRid
-        ? new FsFile(pathOrRid as number)
+        ? new FsFile(pathOrRid as number, Symbol.for("Deno.internal.FsFile"))
         : await Deno.open(pathOrRid as string, openOptions);
 
       // ignore mode because it's not supported on windows
@@ -139,7 +139,7 @@ export function writeFileSync(
   let error: Error | null = null;
   try {
     file = isRid
-      ? new FsFile(pathOrRid as number)
+      ? new FsFile(pathOrRid as number, Symbol.for("Deno.internal.FsFile"))
       : Deno.openSync(pathOrRid as string, openOptions);
 
     // ignore mode because it's not supported on windows