- fmt = bt_lookup_format(g_quark_from_string(format_str));
- td = fmt->open_trace(path, O_RDONLY,
- ctf_move_pos_slow, NULL);
+ fmt = bt_lookup_format(g_quark_from_string(format_name));
+ if (!fmt) {
+ fprintf(stderr, "[error] [Context] Format \"%s\" unknown.\n\n",
+ format_name);
+ ret = -1;
+ goto end;
+ }
+ td = fmt->open_trace(path, O_RDONLY, NULL, NULL);