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diff --git a/libnautilus-extension/nautilus-info-provider.h b/libnautilus-extension/nautilus-info-provider.h
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+++ b/libnautilus-extension/nautilus-info-provider.h
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+/*
+ *  nautilus-info-provider.h - Interface for Nautilus extensions that 
+ *                             provide info about files.
+ *
+ *  Copyright (C) 2003 Novell, Inc.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 
+ *  Author:  Dave Camp <dave@ximian.com>
+ *
+ */
+
+/* This interface is implemented by Nautilus extensions that want to 
+ * provide information about files.  Extensions are called when Nautilus 
+ * needs information about a file.  They are passed a NautilusFileInfo 
+ * object which should be filled with relevant information */
+
+#ifndef NAUTILUS_INFO_PROVIDER_H
+#define NAUTILUS_INFO_PROVIDER_H
+
+#include <glib-object.h>
+#include "nautilus-extension-types.h"
+#include "nautilus-file-info.h"
+
+G_BEGIN_DECLS
+
+#define NAUTILUS_TYPE_INFO_PROVIDER           (nautilus_info_provider_get_type ())
+#define NAUTILUS_INFO_PROVIDER(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), NAUTILUS_TYPE_INFO_PROVIDER, NautilusInfoProvider))
+#define NAUTILUS_IS_INFO_PROVIDER(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NAUTILUS_TYPE_INFO_PROVIDER))
+#define NAUTILUS_INFO_PROVIDER_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), NAUTILUS_TYPE_INFO_PROVIDER, NautilusInfoProviderIface))
+
+typedef struct _NautilusInfoProvider       NautilusInfoProvider;
+typedef struct _NautilusInfoProviderIface  NautilusInfoProviderIface;
+
+typedef void (*NautilusInfoProviderUpdateComplete) (NautilusInfoProvider    *provider,
+						    NautilusOperationHandle *handle,
+						    NautilusOperationResult  result,
+						    gpointer                 user_data);
+
+struct _NautilusInfoProviderIface {
+	GTypeInterface g_iface;
+
+	NautilusOperationResult (*update_file_info) (NautilusInfoProvider     *provider,
+						     NautilusFileInfo         *file,
+						     GClosure                 *update_complete,
+						     NautilusOperationHandle **handle);
+	void                    (*cancel_update)    (NautilusInfoProvider     *provider,
+						     NautilusOperationHandle  *handle);
+};
+
+/* Interface Functions */
+GType                   nautilus_info_provider_get_type               (void);
+NautilusOperationResult nautilus_info_provider_update_file_info       (NautilusInfoProvider     *provider,
+								       NautilusFileInfo         *file,
+								       GClosure                 *update_complete,
+								       NautilusOperationHandle **handle);
+void                    nautilus_info_provider_cancel_update          (NautilusInfoProvider     *provider,
+								       NautilusOperationHandle  *handle);
+
+
+
+/* Helper functions for implementations */
+void                    nautilus_info_provider_update_complete_invoke (GClosure                 *update_complete,
+								       NautilusInfoProvider     *provider,
+								       NautilusOperationHandle  *handle,
+								       NautilusOperationResult   result);
+
+G_END_DECLS
+
+#endif