1 files changed, 60 insertions, 0 deletions
diff --git a/libports/get-right.c b/libports/get-right.c
new file mode 100644
index 00000000..0c5f13b7
--- /dev/null
+++ b/libports/get-right.c
@@ -0,0 +1,60 @@
+/* 
+   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "ports.h"
+#include <cthreads.h>
+#include <mach/notify.h>
+#include <assert.h>
+
+static volatile error_t gdb_loses = 0;
+
+mach_port_t
+ports_get_right (void *port)
+{
+  struct port_info *pi = port;
+  mach_port_t foo;
+  
+  mutex_lock (&_ports_lock);
+
+  if (pi->port_right == MACH_PORT_NULL)
+    {
+      mutex_unlock (&_ports_lock);
+      return MACH_PORT_NULL;
+    }
+      
+  pi->mscount++;
+  if ((pi->flags & PORT_HAS_SENDRIGHTS) == 0)
+    {
+      pi->flags |= PORT_HAS_SENDRIGHTS;
+      pi->refcnt++;
+      gdb_loses =
+	mach_port_request_notification (mach_task_self (), pi->port_right,
+					MACH_NOTIFY_NO_SENDERS, pi->mscount,
+					pi->port_right,
+					MACH_MSG_TYPE_MAKE_SEND_ONCE, &foo);
+      assert_perror (gdb_loses);
+      if (foo != MACH_PORT_NULL)
+	mach_port_deallocate (mach_task_self (), foo);
+    }
+  mutex_unlock (&_ports_lock);
+  return pi->port_right;
+}
+
+