+/*
+ * Parse config and register a task for a writer node.
+ *
+ * \param arg Command line arguments.
+ * \param parent The new node will be a child of \a parent.
+ * \param wn The writer node.
+ *
+ * If arg is \p NULL, the OS-dependent default writer is used with no
+ * arguments. The default writers are alsa for Linux, osx for OS X, oss for
+ * *BSD, and the file writer if the default writer is not supported.
+ *
+ * Once the writer configuration has been retrieved from the ->parse_config
+ * callback a writer node is created, its buffer tree node is added to the
+ * buffer tree as a child of the given parent.
+ *
+ * Finally, the new writer node's task structure is initialized and registered
+ * to the paraslash scheduler.
+ *
+ * \return Standard.
+ */
+static void setup_writer_node(const char *arg, struct btr_node *parent,
+ struct writer_node *wn, struct sched *s)
+{
+ if (arg)
+ wn->conf = check_writer_arg_or_die(arg, &wn->writer_num);
+ else {
+ wn->writer_num = DEFAULT_WRITER;
+ wn->conf = writers[DEFAULT_WRITER].parse_config_or_die("");
+ }
+ register_writer_node(wn, parent, s);
+}
+
+static int setup_and_schedule(void)