Move literally everything out of src/or

This commit won't build yet -- it just puts everything in a slightly
more logical place.

The reasoning here is that "src/core" will hold the stuff that every (or
nearly every) tor instance will need in order to do onion routing.
Other features (including some necessary ones) will live in
"src/feature".  The "src/app" directory will hold the stuff needed
to have Tor be an application you can actually run.

This commit DOES NOT refactor the former contents of src/or into a
logical set of acyclic libraries, or change any code at all.  That
will have to come in the future.

We will continue to move things around and split them in the future,
but I hope this lays a reasonable groundwork for doing so.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/core/or/crypt_path_reference_st.h b/src/core/or/crypt_path_reference_st.h
new file mode 100644
index 0000000000..bb0e519233
--- /dev/null
+++ b/src/core/or/crypt_path_reference_st.h
@@ -0,0 +1,23 @@
+/* Copyright (c) 2001 Matej Pfajfar.
+ * Copyright (c) 2001-2004, Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#ifndef CRYPT_PATH_REFERENCE_ST_H
+#define CRYPT_PATH_REFERENCE_ST_H
+
+/** A reference-counted pointer to a crypt_path_t, used only to share
+ * the final rendezvous cpath to be used on a service-side rendezvous
+ * circuit among multiple circuits built in parallel to the same
+ * destination rendezvous point. */
+struct crypt_path_reference_t {
+  /** The reference count. */
+  unsigned int refcount;
+  /** The pointer.  Set to NULL when the crypt_path_t is put into use
+   * on an opened rendezvous circuit. */
+  crypt_path_t *cpath;
+};
+
+#endif
+