w->open = file_write_open;
w->pre_select = file_write_pre_select;
w->post_select = file_write_post_select;
w->parse_config = file_write_parse_config;
w->close = file_write_close;
w->shutdown = NULL; /* nothing to do */
w->open = file_write_open;
w->pre_select = file_write_pre_select;
w->post_select = file_write_post_select;
w->parse_config = file_write_parse_config;
w->close = file_write_close;
w->shutdown = NULL; /* nothing to do */