X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=write.c;h=9762c40cd8e2b85dab8e0281eed1adc4c5acae86;hb=f2dfd6d47a71433c530773cfbf4039de8b065369;hp=6b574414b6b13c227c98b008addd28f4b2302b33;hpb=af20b849aa8b081bd20c47bda4874d6ea6ee9365;p=paraslash.git

diff --git a/write.c b/write.c
index 6b574414..9762c40c 100644
--- a/write.c
+++ b/write.c
@@ -165,6 +165,41 @@ __noreturn static void print_help_and_die(void)
 	exit(0);
 }
 
+/*
+ * 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 int setup_writer_node(const char *arg, struct btr_node *parent,
+		struct writer_node *wn)
+{
+	if (arg)
+		wn->conf = check_writer_arg(arg, &wn->writer_num);
+	else {
+		wn->writer_num = DEFAULT_WRITER;
+		wn->conf = writers[DEFAULT_WRITER].parse_config_or_die("");
+	}
+	if (!wn->conf)
+		return -E_WRITE_COMMON_SYNTAX;
+	register_writer_node(wn, parent);
+	return 1;
+}
+
 static int main_btr(struct sched *s)
 {
 	int i, ret;