X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=buffer_tree.c;h=5756898bced710406b3c68b8cb1e5cc85a992183;hp=c62cbf13c3bdc4b621bd891d41e1b74fe24d98fe;hb=146316482306dc68ca4ecb4ff2658d2380a75338;hpb=6d9c357ff64e799dfeacda6a176012de10c7f5c1

diff --git a/buffer_tree.c b/buffer_tree.c
index c62cbf13..5756898b 100644
--- a/buffer_tree.c
+++ b/buffer_tree.c
@@ -878,37 +878,36 @@ size_t btr_get_output_queue_size(struct btr_node *btrn)
 }
 
 /**
- * Execute a inter-node command on a parent node.
+ * Execute a inter-node command on the given node or on a parent node.
  *
  * \param btrn The node to start looking.
  * \param command The command to execute.
  * \param value_result Additional arguments and result value.
  *
- * This function traverses the buffer tree upwards and looks for parent nodes
- * of \a btrn that understands \a command. On the first such node the command
- * is executed, and the result is stored in \a value_result.
+ * This function traverses the buffer tree from \a btrn upwards and looks for
+ * the first node that understands \a command. On this node \a command is
+ * executed, and the result is stored in \a value_result.
  *
  * \return \p -ENOTSUP if no parent node of \a btrn understands \a command.
  * Otherwise the return value of the command handler is returned.
+ *
+ * \sa \ref receiver::execute, filter::execute, writer::execute.
  */
 int btr_exec_up(struct btr_node *btrn, const char *command, char **value_result)
 {
 	int ret;
 
 	for (; btrn; btrn = btrn->parent) {
-		struct btr_node *parent = btrn->parent;
-		if (!parent)
-			return -ERRNO_TO_PARA_ERROR(ENOTSUP);
-		if (!parent->execute)
+		if (!btrn->execute)
 			continue;
-		PARA_INFO_LOG("parent: %s, cmd: %s\n", parent->name, command);
-		ret = parent->execute(parent, command, value_result);
+		PARA_INFO_LOG("executing %s on %s\n", command, btrn->name);
+		ret = btrn->execute(btrn, command, value_result);
 		if (ret == -ERRNO_TO_PARA_ERROR(ENOTSUP))
 			continue;
 		if (ret < 0)
 			return ret;
 		if (value_result && *value_result)
-			PARA_INFO_LOG("%s(%s): %s\n", command, parent->name,
+			PARA_INFO_LOG("%s(%s): %s\n", command, btrn->name,
 				*value_result);
 		return 1;
 	}