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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 /mach/bootprivport.c
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initial import
Diffstat (limited to 'mach/bootprivport.c')
-rw-r--r--mach/bootprivport.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/mach/bootprivport.c b/mach/bootprivport.c
new file mode 100644
index 0000000..85c6330
--- /dev/null
+++ b/mach/bootprivport.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1993 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 <mach.h>
+
+kern_return_t
+__mach_get_priv_ports (mach_port_t *host_priv_ptr,
+ mach_port_t *device_master_ptr)
+{
+ kern_return_t err;
+ mach_port_t bootstrap, reply;
+
+ struct
+ {
+ mach_msg_header_t hdr;
+ mach_msg_type_t host_priv_type;
+ mach_port_t host_priv;
+ mach_msg_type_t dev_master_type;
+ mach_port_t dev_master;
+ } msg;
+
+ if (err = task_get_bootstrap_port (mach_task_self (), &bootstrap))
+ return err;
+
+ /* We cannot simply use a MiG-generated user stub to do this,
+ because the return message does not contain a return code datum. */
+ reply = __mach_reply_port ();
+ msg.hdr.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_COPY_SEND,
+ MACH_MSG_TYPE_MAKE_SEND_ONCE);
+ msg.hdr.msgh_size = 0;
+ msg.hdr.msgh_remote_port = bootstrap;
+ msg.hdr.msgh_local_port = reply;
+ msg.hdr.msgh_kind = MACH_MSGH_KIND_NORMAL;
+ msg.hdr.msgh_id = 999999;
+ err = __mach_msg (&msg.hdr,
+ MACH_SEND_MSG|MACH_RCV_MSG|MACH_RCV_TIMEOUT,
+ sizeof (msg.hdr), sizeof (msg), reply,
+ 500, MACH_PORT_NULL); /* XXX timeout is arbitrary */
+ mach_port_deallocate (mach_task_self (), bootstrap);
+ mach_port_deallocate (mach_task_self (), reply);
+
+ if (err == KERN_SUCCESS)
+ {
+ *host_priv_ptr = msg.host_priv;
+ *device_master_ptr = msg.dev_master;
+ }
+
+ return err;
+}