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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /hurd/privports.c
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initial import
Diffstat (limited to 'hurd/privports.c')
-rw-r--r--hurd/privports.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/hurd/privports.c b/hurd/privports.c
new file mode 100644
index 0000000..f760e37
--- /dev/null
+++ b/hurd/privports.c
@@ -0,0 +1,60 @@
+/* Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <hurd.h>
+
+/* The program might set these if it is the initial task
+ bootstrapped by the microkernel. */
+
+mach_port_t _hurd_host_priv, _hurd_device_master;
+
+
+kern_return_t
+get_privileged_ports (host_priv_t *host_priv_ptr, device_t *device_master_ptr)
+{
+ if (! _hurd_host_priv)
+ {
+ error_t err;
+
+ if (_hurd_ports)
+ /* We have gotten some initial ports, so perhaps
+ we have a proc server to talk to. */
+ err = __USEPORT (PROC, __proc_getprivports (port,
+ &_hurd_host_priv,
+ &_hurd_device_master));
+ else
+ return MACH_SEND_INVALID_DEST;
+
+ if (err)
+ return err;
+ }
+
+ if (host_priv_ptr)
+ {
+ mach_port_mod_refs (mach_task_self (),
+ _hurd_host_priv, MACH_PORT_RIGHT_SEND, 1);
+ *host_priv_ptr = _hurd_host_priv;
+ }
+ if (device_master_ptr)
+ {
+ mach_port_mod_refs (mach_task_self (),
+ _hurd_device_master, MACH_PORT_RIGHT_SEND, 1);
+ *device_master_ptr = _hurd_device_master;
+ }
+ return KERN_SUCCESS;
+}