reboot.c

来自「glibc 库, 不仅可以学习使用库函数,还可以学习函数的具体实现,是提高功力的」· C语言 代码 · 共 51 行

/* Copyright (C) 1992,93,94,97,98,2001 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/startup.h>
#include <sys/reboot.h>

/* Reboot the system.  */
int
reboot (int howto)
{
  error_t err;
  startup_t init;
  mach_port_t hostpriv;

  err = __get_privileged_ports (&hostpriv, NULL);
  if (err)
    return __hurd_fail (EPERM);

  err = __USEPORT (PROC, __proc_getmsgport (port, 1, &init));
  if (!err)
    {
      err = __startup_reboot (init, hostpriv, howto);
      __mach_port_deallocate (__mach_task_self (), init);
    }

  __mach_port_deallocate (__mach_task_self (), hostpriv);

  if (err)
    return __hurd_fail (err);

  return 0;
}