diff --git a/src/debug/DebugCommandHandlers.js b/src/debug/DebugCommandHandlers.js
index dddd99493c3..1f7f85c63da 100644
--- a/src/debug/DebugCommandHandlers.js
+++ b/src/debug/DebugCommandHandlers.js
@@ -128,8 +128,8 @@ define(function (require, exports, module) {
 
     function _handleSwitchLanguage() {
         var stringsPath = FileUtils.getNativeBracketsDirectoryPath() + "/nls";
-        NativeFileSystem.requestNativeFileSystem(stringsPath, function (dirEntry) {
-            dirEntry.createReader().readEntries(function (entries) {
+        NativeFileSystem.requestNativeFileSystem(stringsPath, function (fs) {
+            fs.root.createReader().readEntries(function (entries) {
 
                 var $activeLanguage,
                     $submit,
diff --git a/src/extensions/default/HTMLCodeHints/main.js b/src/extensions/default/HTMLCodeHints/main.js
index 919741789c2..8403840f2f1 100644
--- a/src/extensions/default/HTMLCodeHints/main.js
+++ b/src/extensions/default/HTMLCodeHints/main.js
@@ -356,8 +356,8 @@ define(function (require, exports, module) {
             self.cachedHints = {};
             self.cachedHints.unfiltered = [];
 
-            NativeFileSystem.requestNativeFileSystem(targetDir, function (dirEntry) {
-                dirEntry.createReader().readEntries(function (entries) {
+            NativeFileSystem.requestNativeFileSystem(targetDir, function (fs) {
+                fs.root.createReader().readEntries(function (entries) {
 
                     entries.forEach(function (entry) {
                         if (ProjectManager.shouldShow(entry)) {
diff --git a/src/file/NativeFileSystem.js b/src/file/NativeFileSystem.js
index ea4954f207b..7b6c3d82723 100644
--- a/src/file/NativeFileSystem.js
+++ b/src/file/NativeFileSystem.js
@@ -107,15 +107,13 @@ define(function (require, exports, module) {
         /** requestNativeFileSystem
          *
          * @param {!string} path
-         * @param {!function(DirectoryEntry)} successCallback
+         * @param {!function(FileSystem)} successCallback
          * @param {!function(number)} errorCallback (TODO #2057: should pass a FileError)
          */
         requestNativeFileSystem: function (path, successCallback, errorCallback) {
             brackets.fs.stat(path, function (err, data) {
                 if (!err) {
-                    // FIXME (issue #247): return a NativeFileSystem object
-                    var root = new NativeFileSystem.DirectoryEntry(path);
-                    successCallback(root);
+                    successCallback(new NativeFileSystem.FileSystem(path));
                 } else if (errorCallback) {
                     errorCallback(NativeFileSystem._nativeToFileError(err));
                 }
@@ -210,11 +208,12 @@ define(function (require, exports, module) {
     
     /** class: Entry
      *
-     * @param {string} name
-     * @param {string} isFile
+     * @param {string} fullPath
+     * @param {boolean} isDirectory
+     * @param {FileSystem} fs
      * @constructor
      */
-    NativeFileSystem.Entry = function (fullPath, isDirectory) {
+    NativeFileSystem.Entry = function (fullPath, isDirectory, fs) {
         this.isDirectory = isDirectory;
         this.isFile = !isDirectory;
         
@@ -237,9 +236,7 @@ define(function (require, exports, module) {
             }
         }
 
-        // TODO (issue #241)
-        // http://www.w3.org/TR/2011/WD-file-system-api-20110419/#widl-Entry-filesystem
-        this.filesystem = null;
+        this.filesystem = fs;
     };
     
     NativeFileSystem.Entry.prototype.moveTo = function (parent, newName, successCallback, errorCallback) {
@@ -295,11 +292,12 @@ define(function (require, exports, module) {
      * This interface represents a file on a file system.
      *
      * @param {string} name
+     * @param {FileSystem} fs
      * @constructor
      * @extends {Entry}
      */
-    NativeFileSystem.FileEntry = function (name) {
-        NativeFileSystem.Entry.call(this, name, false);
+    NativeFileSystem.FileEntry = function (name, fs) {
+        NativeFileSystem.Entry.call(this, name, false, fs);
     };
     NativeFileSystem.FileEntry.prototype = new NativeFileSystem.Entry();
 
@@ -528,10 +526,11 @@ define(function (require, exports, module) {
      *
      * @constructor
      * @param {string} name
+     * @param {FileSystem} fs
      * @extends {Entry}
      */
-    NativeFileSystem.DirectoryEntry = function (name) {
-        NativeFileSystem.Entry.call(this, name, true);
+    NativeFileSystem.DirectoryEntry = function (name, fs) {
+        NativeFileSystem.Entry.call(this, name, true, fs);
 
         // TODO (issue #241): void removeRecursively (VoidCallback successCallback, optional ErrorCallback errorCallback);
     };
@@ -548,7 +547,8 @@ define(function (require, exports, module) {
      * @param {!function(FileError|number)} errorCallback (TODO #2057: should consistently pass a FileError)
      */
     NativeFileSystem.DirectoryEntry.prototype.getDirectory = function (path, options, successCallback, errorCallback) {
-        var directoryFullPath = path;
+        var directoryFullPath = path,
+            filesystem = this.filesystem;
         
         function isRelativePath(path) {
             // If the path contains a colons it must be a full path on Windows (colons are
@@ -568,7 +568,7 @@ define(function (require, exports, module) {
 
         var createDirectoryEntry = function () {
             if (successCallback) {
-                successCallback(new NativeFileSystem.DirectoryEntry(directoryFullPath));
+                successCallback(new NativeFileSystem.DirectoryEntry(directoryFullPath, filesystem));
             }
         };
 
@@ -656,7 +656,8 @@ define(function (require, exports, module) {
      * @param {!function(FileError|number)} errorCallback  (TODO #2057: should consistently pass a FileError)
      */
     NativeFileSystem.DirectoryEntry.prototype.getFile = function (path, options, successCallback, errorCallback) {
-        var fileFullPath = path;
+        var fileFullPath = path,
+            filesystem = this.filesystem;
         
         function isRelativePath(path) {
             // If the path contains a colons it must be a full path on Windows (colons are
@@ -676,7 +677,7 @@ define(function (require, exports, module) {
 
         var createFileEntry = function () {
             if (successCallback) {
-                successCallback(new NativeFileSystem.FileEntry(fileFullPath));
+                successCallback(new NativeFileSystem.FileEntry(fileFullPath, filesystem));
             }
         };
 
@@ -752,7 +753,9 @@ define(function (require, exports, module) {
      * @returns {Array.<Entry>}
      */
     NativeFileSystem.DirectoryReader.prototype.readEntries = function (successCallback, errorCallback) {
-        var rootPath = this._directory.fullPath;
+        var rootPath = this._directory.fullPath,
+            filesystem = this.filesystem;
+        
         brackets.fs.readdir(rootPath, function (err, filelist) {
             if (!err) {
                 var entries = [];
@@ -767,9 +770,9 @@ define(function (require, exports, module) {
                     brackets.fs.stat(itemFullPath, function (statErr, statData) {
                         if (!statErr) {
                             if (statData.isDirectory()) {
-                                entries[index] = new NativeFileSystem.DirectoryEntry(itemFullPath);
+                                entries[index] = new NativeFileSystem.DirectoryEntry(itemFullPath, filesystem);
                             } else if (statData.isFile()) {
-                                entries[index] = new NativeFileSystem.FileEntry(itemFullPath);
+                                entries[index] = new NativeFileSystem.FileEntry(itemFullPath, filesystem);
                             } else {
                                 entries[index] = null;  // neither a file nor a dir, so don't include it
                             }
@@ -976,6 +979,36 @@ define(function (require, exports, module) {
         // TODO (issue #241): implement, readonly
         this.lastModifiedDate = null;
     };
+    
+    /**
+     * Implementation of w3 FileSystem interface
+     *  http://www.w3.org/TR/file-system-api/#the-filesystem-interface
+     *
+     * FileSystem represents a file system
+     */
+    NativeFileSystem.FileSystem = function (path) {
+
+        /**
+         * This is the name of the file system and must be unique across the list
+         * of exposed file systems.
+         * @const
+         * @type {string}
+         */
+        Object.defineProperty(this, "name", {
+            value: path,
+            writable: false
+        });
+        
+        /**
+         * The root directory of the file system.
+         * @const
+         * @type {DirectoryEntry}
+         */
+        Object.defineProperty(this, "root", {
+            value: new NativeFileSystem.DirectoryEntry(path, this),
+            writable: false
+        });
+    };
 
     /** class: FileError
      *
diff --git a/src/project/ProjectManager.js b/src/project/ProjectManager.js
index 075b67b338e..9fce2fe75a1 100644
--- a/src/project/ProjectManager.js
+++ b/src/project/ProjectManager.js
@@ -739,7 +739,8 @@ define(function (require, exports, module) {
         if (!brackets.inBrowser) {
             // Point at a real folder structure on local disk
             NativeFileSystem.requestNativeFileSystem(rootPath,
-                function (rootEntry) {
+                function (fs) {
+                    var rootEntry = fs.root;
                     var projectRootChanged = (!_projectRoot || !rootEntry)
                         || _projectRoot.fullPath !== rootEntry.fullPath;
 
diff --git a/src/utils/ExtensionLoader.js b/src/utils/ExtensionLoader.js
index c5073ff11c9..267a9e4c475 100644
--- a/src/utils/ExtensionLoader.js
+++ b/src/utils/ExtensionLoader.js
@@ -162,8 +162,8 @@ define(function (require, exports, module) {
         var result = new $.Deferred();
         
         NativeFileSystem.requestNativeFileSystem(directory,
-            function (rootEntry) {
-                rootEntry.createReader().readEntries(
+            function (fs) {
+                fs.root.createReader().readEntries(
                     function (entries) {
                         var i,
                             extensions = [];
diff --git a/test/spec/NativeFileSystem-test.js b/test/spec/NativeFileSystem-test.js
index 03b8ea4a96f..15962dc9827 100644
--- a/test/spec/NativeFileSystem-test.js
+++ b/test/spec/NativeFileSystem-test.js
@@ -53,7 +53,7 @@ define(function (require, exports, module) {
                     deferred = new $.Deferred();
                 
                 function requestNativeFileSystemSuccessCB(nfs) {
-                    var reader = nfs.createReader();
+                    var reader = nfs.root.createReader();
 
                     var successCallback = function (e) { entries = e; deferred.resolve(); };
                     var errorCallback = function () { deferred.reject(); };
@@ -86,7 +86,7 @@ define(function (require, exports, module) {
                     deferred = new $.Deferred();
                 
                 function requestNativeFileSystemSuccessCB(nfs) {
-                    var reader = nfs.createReader();
+                    var reader = nfs.root.createReader();
 
                     var successCallback = function (e) { entries = e; deferred.resolve(); };
                     var errorCallback = function () { deferred.reject(); };
@@ -190,14 +190,14 @@ define(function (require, exports, module) {
                     accessedFolder = true;
                 
                     function recreatePlaceholder(deferred) {
-                        nfs.getFile("placeholder",
+                        nfs.root.getFile("placeholder",
                                     { create: true, exclusive: true },
                                     function () { placeholderRecreated = true; deferred.resolve(); },
                                     function () { placeholderRecreated = false; deferred.reject(); });
                     }
 
                     function readDirectory() {
-                        var reader = nfs.createReader();
+                        var reader = nfs.root.createReader();
                         var successCallback = function (e) {
                             entries = e;
                             recreatePlaceholder(deferred);
@@ -254,7 +254,7 @@ define(function (require, exports, module) {
                 this.after(function () { brackets.fs.stat = oldStat; });
                 
                 function requestNativeFileSystemSuccessCB(nfs) {
-                    var reader = nfs.createReader();
+                    var reader = nfs.root.createReader();
                     
                     var successCallback = function (e) { readComplete = true; };
                     var errorCallback = function (error) { readComplete = true; gotError = true; theError = error; };
@@ -472,8 +472,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    // FIXME (issue #247): NativeFileSystem.root is missing
-                    this.nfs.getFile("new-zero-length-file.txt", { create: true, exclusive: true }, successCallback, errorCallback);
+                    this.nfs.root.getFile("new-zero-length-file.txt", { create: true, exclusive: true }, successCallback, errorCallback);
                 });
 
                 waitsFor(function () { return writeComplete; }, 1000);
@@ -526,8 +525,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    // FIXME (issue #247): NativeFileSystem.root is missing
-                    this.nfs.getFile("does-not-exist.txt", { create: false }, successCallback, errorCallback);
+                    this.nfs.root.getFile("does-not-exist.txt", { create: false }, successCallback, errorCallback);
                 });
 
                 waitsFor(function () { return writeComplete; }, 1000);
@@ -555,8 +553,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    // FIXME (issue #247): NativeFileSystem.root is missing
-                    this.nfs.getFile("file1", { create: true, exclusive: true }, successCallback, errorCallback);
+                    this.nfs.root.getFile("file1", { create: true, exclusive: true }, successCallback, errorCallback);
                 });
 
                 // wait for success or error to return
@@ -587,8 +584,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    // FIXME (issue #247): NativeFileSystem.root is missing
-                    this.nfs.getFile("dir1", { create: false }, successCallback, errorCallback);
+                    this.nfs.root.getFile("dir1", { create: false }, successCallback, errorCallback);
                 });
 
                 // wait for success or error to return
@@ -628,7 +624,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    this.nfs.getFile("file1", { create: false }, successCallback, errorCallback);
+                    this.nfs.root.getFile("file1", { create: false }, successCallback, errorCallback);
                 });
 
                 waitsFor(function () { return writeComplete && fileEntry; }, 1000);
@@ -685,7 +681,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    this.nfs.getFile("file1", { create: false }, successCallback, errorCallback);
+                    this.nfs.root.getFile("file1", { create: false }, successCallback, errorCallback);
                 });
 
                 waitsFor(function () { return writeComplete && fileEntry; }, 1000);
@@ -726,7 +722,7 @@ define(function (require, exports, module) {
 
                 // createWriter() should return an error for files it can't read
                 runs(function () {
-                    this.nfs.getFile(
+                    this.nfs.root.getFile(
                         "cant_read_here.txt",
                         { create: false },
                         function (entry) {
@@ -768,7 +764,7 @@ define(function (require, exports, module) {
                         writeComplete = true;
                     };
 
-                    this.nfs.getFile("cant_write_here.txt", { create: false }, successCallback, errorCallback);
+                    this.nfs.root.getFile("cant_write_here.txt", { create: false }, successCallback, errorCallback);
                 });
 
                 // fileWriter.onerror handler should be invoked for read only files