Initial revision

1 files changed, 62 insertions, 0 deletions

diff --git a/libtrivfs/startup.c b/libtrivfs/startup.c
new file mode 100644
index 00000000..31312f9f
--- /dev/null
+++ b/libtrivfs/startup.c
@@ -0,0 +1,62 @@
+/* Contact parent filesystem and establish ourselves as the translator.
+
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   This program 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.
+
+   This program 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 <hurd.h>
+#include <hurd/fsys.h>
+#include <assert.h>
+
+#include "priv.h"
+
+/* Creates a control port for this filesystem and sends it to BOOTSTRAP with
+   fsys_startup.  CONTROL_TYPE is the ports library type for the control
+   port, and PROTID_TYPE is the type for ports representing opens of this
+   node.  If CONTROL isn't NULL, the trivfs control port is return in it.  If
+   any error occurs sending fsys_startup, it is returned, otherwise 0.  */
+error_t
+trivfs_startup(mach_port_t bootstrap,
+	       int control_type, int protid_type,
+	       struct trivfs_control **control)
+{
+  error_t err;
+  mach_port_t realnode;
+  struct trivfs_control *tcntl;
+  mach_port_t mcntl =
+    trivfs_handle_port (MACH_PORT_NULL, control_type, protid_type);
+
+  assert(mcntl != MACH_PORT_NULL);
+
+  /* Contact whoever started us.  */
+  err = fsys_startup (bootstrap, mcntl, MACH_MSG_TYPE_MAKE_SEND, &realnode);
+
+  /* Install the returned realnode for trivfs's use */
+  tcntl = ports_check_port_type (mcntl, control_type);
+  assert (tcntl);
+
+  ports_change_hardsoft (tcntl, 1);
+  if (!err)
+    tcntl->underlying = realnode;
+
+  ports_done_with_port (tcntl);
+
+  if (control)
+    *control = tcntl;
+
+  return err;
+}