closedir.c

来自「一个C源代码分析器」· C语言 代码 · 共 53 行

/* 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 <ansidecl.h>
#include <errno.h>
#include <stddef.h>
#include <stdlib.h>
#include <dirent.h>
#include <unistd.h>
#include <hurd.h>

/* Close the directory stream DIRP.
   Return 0 if successful, -1 if not.  */
int
DEFUN(closedir, (dirp), DIR *dirp)
{
  error_t err;

  if (dirp == NULL)
    {
      errno = EINVAL;
      return -1;
    }

  if ((err = __vm_deallocate (__mach_task_self (),
			      (vm_address_t) dirp->__data, dirp->__allocation))
      || (err = __mach_port_deallocate (__mach_task_self (), dirp->__port)))
    {
      errno = err;
      return -1;
    }

  free (dirp);

  return 0;
}