Index: uspace/srv/vfs/vfs_lookup.c
===================================================================
--- uspace/srv/vfs/vfs_lookup.c	(revision fafb8e5dc8a80c87cf66270ca6f93d574a95471c)
+++ uspace/srv/vfs/vfs_lookup.c	(revision 34832c3e4df70614df5caa7d44b985f0460ef8ec)
@@ -325,6 +325,9 @@
  *
  * @param base    The file from which to perform the lookup.
- * @param path    Path to be resolved; it must be a NULL-terminated
- *                string.
+ * @param path    Path to be resolved; It must be an absolute path
+ *                which get resolved relatively to base; it must be a
+ *                NULL-terminated string. Example: If /foo is parent
+ *                and path is "/bar/baz", the result would be /foo/bar/baz.
+ *                Just "bar/baz" is not valid.
  * @param lflag   Flags to be used during lookup.
  * @param result  Empty structure where the lookup result will be stored.