added get_storage_impl() to torrent_handle

docs/manual.rst

@@ -1589,6 +1589,7 @@ Its declaration looks like this::
 
 		boost::filesystem::path save_path() const;
 		void move_storage(boost::filesystem::path const& save_path) const;
+		storage_interface* get_storage_impl() const;
 
 		sha1_hash info_hash() const;
 
@@ -1715,6 +1716,16 @@ the same drive as the original save path. Since disk IO is performed in a separa
 thread, this operation is also asynchronous. Once the operation completes, the
 ``storage_moved_alert`` is generated, with the new path as the message.
 
+get_storage_impl()
+------------------
+
+	::
+
+		storage_interface* get_storage_impl() const;
+
+Returns the storage implementation for this torrent. This depends on the
+storage contructor function that was passed to ``session::add_torrent``.
+
 force_reannounce()
 ------------------
 

include/libtorrent/storage.hpp

@@ -259,6 +259,8 @@ namespace libtorrent
 			disk_check_aborted = -3
 		};
 
+		storage_interface* get_storage_impl() { return m_storage.get(); }
+
 	private:
 
 		fs::path save_path() const;

include/libtorrent/torrent.hpp

@@ -170,6 +170,12 @@ namespace libtorrent
 		int seed_rank(session_settings const& s) const;
 
 		storage_mode_t storage_mode() const { return m_storage_mode; }
+		storage_interface* get_storage()
+		{
+			if (!m_owning_storage) return 0;
+			return m_owning_storage->get_storage_impl();
+		}
+
 		// this will flag the torrent as aborted. The main
 		// loop in session_impl will check for this state
 		// on all torrents once every second, and take

include/libtorrent/torrent_handle.hpp

@@ -366,6 +366,8 @@ namespace libtorrent
 		bool resolve_countries() const;
 #endif
 
+		storage_interface* get_storage_impl() const;
+
 		// all these are deprecated, use piece
 		// priority functions instead
 

src/torrent_handle.cpp

@@ -499,6 +499,12 @@ namespace libtorrent
 		TORRENT_FORWARD(replace_trackers(urls));
 	}
 
+	storage_interface* torrent_handle::get_storage_impl() const
+	{
+		INVARIANT_CHECK;
+		TORRENT_FORWARD_RETURN(get_storage(), 0);
+	}
+
 	torrent_info const& torrent_handle::get_torrent_info() const
 	{
 		INVARIANT_CHECK;