1 files changed, 49 insertions, 0 deletions
diff --git a/libtrivfs/io-duplicate.c b/libtrivfs/io-duplicate.c
new file mode 100644
index 00000000..4b20bb99
--- /dev/null
+++ b/libtrivfs/io-duplicate.c
@@ -0,0 +1,49 @@
+/*
+   Copyright (C) 1993, 1994, 1995 Free Software Foundation
+
+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 the GNU Hurd; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Written by Michael I. Bushnell.  */
+
+#include "priv.h"
+#include "io_S.h"
+#include <string.h>
+
+kern_return_t
+trivfs_S_io_duplicate (struct trivfs_protid *cred,
+		       mach_port_t reply,
+		       mach_msg_type_name_t replytype,
+		       mach_port_t *newport,
+		       mach_msg_type_name_t *newporttype)
+{
+  error_t err;
+  struct trivfs_protid *newcred;
+  
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  err = trivfs_protid_dup (cred, &newcred);
+  if (!err)
+    {
+      *newport = ports_get_right (newcred);
+      *newporttype = MACH_MSG_TYPE_MAKE_SEND;
+      ports_port_deref (newcred);
+    }
+
+  return err;
+}
+