1 files changed, 72 insertions, 0 deletions
diff --git a/libdiskfs/console.c b/libdiskfs/console.c
new file mode 100644
index 00000000..a7113ace
--- /dev/null
+++ b/libdiskfs/console.c
@@ -0,0 +1,72 @@
+/* Redirect stdio to the console if possible
+
+   Copyright (C) 1995, 96, 98, 99 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   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 this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <mach/mach.h>
+#include <device/device.h>
+#include <hurd.h>
+
+#include "priv.h"
+
+/* Make sure errors go somewhere reasonable.  */
+void
+diskfs_console_stdio ()
+{
+  if (getpid () > 0)
+    {
+      if (write (2, "", 0) == 0)
+	/* We have a working stderr from our parent (e.g. settrans -a).
+	   Just use it.  */
+	dup2 (2, 1);
+      else
+	{
+	  int fd = open ("/dev/console", O_RDWR);
+
+	  dup2 (fd, 0);
+	  dup2 (fd, 1);
+	  dup2 (fd, 2);
+	  if (fd > 2)
+	    close (fd);
+	}
+    }
+  else
+    {
+      mach_port_t dev, cons;
+      error_t err;
+      if (diskfs_boot_flags)
+	_diskfs_boot_privports ();
+      err = get_privileged_ports (NULL, &dev);
+      assert_perror (err);
+      err = device_open (dev, D_READ|D_WRITE, "console", &cons);
+      mach_port_deallocate (mach_task_self (), dev);
+      assert_perror (err);
+      stdin = mach_open_devstream (cons, "r");
+      stdout = stderr = mach_open_devstream (cons, "w");
+      mach_port_deallocate (mach_task_self (), cons);
+    }
+}