nsmux can shutdown all dynamic translators on exit

Now nsmux can shutdown all of its dynamic translators on exit, thus
doing sufficient cleanup. One can tell nsmux to shutdown dynamic
translators using the ``--recursive'' option to settrans. Note that
because fsys_goaway returns immediately as the RPC is processed, while
the receiver may still remain in memory, doing something like

  settrans -g --recursive foo

where nsmux is sitting on foo will almost always result in a ``Server
busy'' error message. The reason is that libnetfs counts how many open
ports to its nodes there are at shutdown and in most cases it does the
check *before* the dynamic translators manage to drop their
references. Therefore, the aforementioned command gracefully kills all
dynamic translators. Invoked the second time, this command will
shutdown nsmux, too. Immediate shutdown with killing dynamic
translators can be achieved via

  settrans -gf --recursive foo

1 files changed, 4 insertions, 4 deletions

diff --git a/trans.h b/trans.h
index 86e21c9d6..e28060f5e 100644
--- a/trans.h
+++ b/trans.h
@@ -21,8 +21,8 @@
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
   USA.*/
 /*---------------------------------------------------------------------------*/
-#ifndef __DEBUG_H__
-#define __DEBUG_H__
+#ifndef __TRANS_H__
+#define __TRANS_H__
 
 /*---------------------------------------------------------------------------*/
 #include <hurd.h>
@@ -35,7 +35,7 @@
 struct trans_el
 {
   /*the control port to the translator */
-  mach_port_t cntl;
+  fsys_t cntl;
 
   /*the next and the previous elements in the list */
   struct trans_el * next, * prev;
@@ -55,7 +55,7 @@ extern trans_el_t * dyntrans;
 /*Adds a translator control port to the list of ports. One should use
   only this function to add a new element to the list of ports. */
 error_t
-trans_register (mach_port_t cntl);
+trans_register (fsys_t cntl, trans_el_t ** new_trans);
 /*---------------------------------------------------------------------------*/
 /*Removes a translator control port from the list of ports. One should
   use only this function to remove an element from the list of