Stop following symlinks.

Author: davidmorgan

pkgs/watcher/lib/src/directory_watcher/linux.dart

@@ -239,7 +239,8 @@ class _LinuxDirectoryWatcher
 
   /// Emits [ChangeType.ADD] events for the recursive contents of [path].
   void _addSubdir(String path) {
-    _listen(Directory(path).list(recursive: true), (FileSystemEntity entity) {
+    _listen(Directory(path).list(recursive: true, followLinks: false),
+        (FileSystemEntity entity) {
       if (entity is Directory) {
         _watchSubdir(entity.path);
       } else {

pkgs/watcher/lib/src/directory_watcher/mac_os.dart

@@ -149,7 +149,7 @@ class _MacOSDirectoryWatcher
             if (_files.containsDir(path)) continue;
 
             var stream = Directory(path)
-                .list(recursive: true)
+                .list(recursive: true, followLinks: false)
                 .ignoring<PathNotFoundException>();
             var subscription = stream.listen((entity) {
               if (entity is Directory) return;

pkgs/watcher/lib/src/directory_watcher/windows.dart

@@ -217,7 +217,7 @@ class _WindowsDirectoryWatcher
             // itself, so there are no other types of "path not found" that
             // might need different handling here.
             var stream = Directory(path)
-                .list(recursive: true)
+                .list(recursive: true, followLinks: false)
                 .ignoring<PathNotFoundException>();
             var subscription = stream.listen((entity) {
               if (entity is Directory) return;

pkgs/watcher/lib/src/utils.dart

@@ -79,7 +79,7 @@ extension DirectoryRobustRecursiveListing on Directory {
   ///
   /// Theses can arise from concurrent file-system modification.
   Stream<FileSystemEntity> listRecursivelyIgnoringErrors() {
-    return list(recursive: true)
+    return list(recursive: true, followLinks: false)
         .ignoring<PathNotFoundException>()
         .ignoring<PathAccessException>();
   }