Merged revisions 317476 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

........
  r317476 | russell | 2011-05-05 17:47:57 -0500 (Thu, 05 May 2011) | 8 lines
  
  Add a datastore fixup to fix a pbx_lua crash.
  
  (closes issue #19055)
  Reported by: jamhed
  Patches:
        lua_datastore_fixup1.diff uploaded by mnicholson (license 96)
  Tested by: mnicholson, jamhed
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@317477 65c4cc65-6c06-0410-ace0-fbb531ad65f3

pbx/pbx_lua.c

@@ -86,6 +86,7 @@ static void lua_create_autoservice_functions(lua_State *L);
 static void lua_create_hangup_function(lua_State *L);
 
 static void lua_state_destroy(void *data);
+static void lua_datastore_fixup(void *data, struct ast_channel *old_chan, struct ast_channel *new_chan);
 static lua_State *lua_get_state(struct ast_channel *chan);
 
 static int exists(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data);
@@ -103,6 +104,7 @@ static struct ast_hashtab *local_table = NULL;
 static const struct ast_datastore_info lua_datastore = {
 	.type = "lua",
 	.destroy = lua_state_destroy,
+	.chan_fixup = lua_datastore_fixup,
 };
 
 
@@ -115,6 +117,21 @@ static void lua_state_destroy(void *data)
 		lua_close(data);
 }
 
+/*!
+ * \brief The fixup function for the lua_datastore.
+ * \param data the datastore data, in this case it will be a lua_State
+ * \param old_chan the channel we are moving from
+ * \param new_chan the channel we are moving to
+ *
+ * This function updates our internal channel pointer.
+ */
+static void lua_datastore_fixup(void *data, struct ast_channel *old_chan, struct ast_channel *new_chan)
+{
+	lua_State *L = data;
+	lua_pushlightuserdata(L, new_chan);
+	lua_setfield(L, LUA_REGISTRYINDEX, "channel");
+}
+
 /*!
  * \brief [lua_CFunction] Find an app and return it in a lua table (for access from lua, don't
  * call directly)