configure: Add fade.o to object list only if oss was detected.

[paraslash.git] / buffer_tree.c

diff --git a/buffer_tree.c b/buffer_tree.c
index c62cbf13c3bdc4b621bd891d41e1b74fe24d98fe..5756898bced710406b3c68b8cb1e5cc85a992183 100644 (file)
--- 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;
        }