[banshee] LibraryWatcher: Guard against watching root dir (bgo#633309)

[Gabriel Burt <gburt src gnome org>]

commit 64ee73869513d71aa461dc81a14bd751758ae288
Author: Frank Ziegler <funtastix googlemail com>
Date:   Fri Feb 11 08:22:39 2011 +0700

    LibraryWatcher: Guard against watching root dir (bgo#633309)
    
    Signed-off-by: Gabriel Burt <gabriel burt gmail com>

 .../Banshee.LibraryWatcher/SourceWatcher.cs        |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/src/Extensions/Banshee.LibraryWatcher/Banshee.LibraryWatcher/SourceWatcher.cs b/src/Extensions/Banshee.LibraryWatcher/Banshee.LibraryWatcher/SourceWatcher.cs
index e36a2cc..94185fd 100644
--- a/src/Extensions/Banshee.LibraryWatcher/Banshee.LibraryWatcher/SourceWatcher.cs
+++ b/src/Extensions/Banshee.LibraryWatcher/Banshee.LibraryWatcher/SourceWatcher.cs
@@ -80,6 +80,11 @@ namespace Banshee.LibraryWatcher
                 throw new Exception ("Will not create LibraryWatcher for the entire home directory");
             }
 
+            string root = Path.GetPathRoot (Environment.CurrentDirectory);
+            if (path == root || path == root + Path.DirectorySeparatorChar) {
+                throw new Exception ("Will not create LibraryWatcher for the entire root directory");
+            }
+
             import_manager = ServiceManager.Get<LibraryImportManager> ();
 
             watcher = new FileSystemWatcher (path);