/* Redirect stdio to the console if possible Copyright (C) 1995 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> /* Make errors go somewhere reasonable. */ void diskfs_console_stdio () { if (getpid () > 0) { 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; 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); } }