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-rw-r--r--mach/hello.c48
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diff --git a/mach/hello.c b/mach/hello.c
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+/* "Hello world" program for GNU C Library on bare Mach 3.0.
+
+Copyright (C) 1991, 1992, 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>
+#include <device/device.h>
+#include <errno.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  kern_return_t err;
+  mach_port_t device, consdev;
+  FILE *consf;
+
+  err = get_privileged_ports (NULL, &device);
+  if (err)
+    _exit (err);
+  err = device_open (device, D_WRITE, "console", &consdev);
+  mach_port_deallocate (mach_task_self (), device);
+  if (err)
+    _exit (err);
+
+  consf = mach_open_devstream (consdev, "w");
+  if (consf == NULL)
+    exit (errno);
+
+  fputs ("Hello, world!\n", consf);
+
+  return 0;
+}