[PATCH 6/8] rpctrace: handle unknown send rights from tasks that don't hold the matching receive right, and eliminate dummy_wrapper

[Brent Baccala]

---
 utils/rpctrace.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/utils/rpctrace.c b/utils/rpctrace.c
index c587736..015f765 100644
--- a/utils/rpctrace.c
+++ b/utils/rpctrace.c
@@ -230,7 +230,7 @@ remove_request (mach_msg_id_t req_id, mach_port_t 
reply_port)
 struct port_info *notify_pi;
 /* The list of receiver infos, but only the ones for the traced tasks. */
 struct receiver_info *receive_right_list;
-static struct traced_info dummy_wrapper;
+
 static struct send_once_info *freelist;
 
 struct hurd_ihash traced_names
@@ -643,16 +643,22 @@ rewrite_right (mach_port_t *right, mach_msg_type_name_t 
*type,
 
       if (receiver_info == NULL)
        {
-         /* It's unusual to see an unknown send right from a traced task.
-          * We ignore it. */
-         if (source != unknown_task)
+         /* We couldn't find the receive right in the task that sent
+          * the message.  Search the other traced tasks.
+          */
+
+         HURD_IHASH_ITERATE_ITEMS (&task_ihash, ti)
            {
-             /* TODO: this happens on fork() when the new process does not
-                have the send right yet (it is about to get inserted).  */
-             error (0, 0, "get an unknown send right from process %d",
-                    task2pid (source));
-             return dummy_wrapper.name;
+             if (ti->key != source)
+               {
+                 receiver_info = discover_receive_right(*right, ti->key);
+                 if (receiver_info) break;
+               }
            }
+       }
+
+      if (receiver_info == NULL)
+       {
          /* The receive right is owned by an unknown task. */
          receiver_info = new_receiver_info (*right, unknown_task);
          mach_port_mod_refs (mach_task_self (), *right,
-- 
2.6.4