sysdeps/mach/hurd/closedir.c

   1 /* Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <stddef.h>
  21 #include <stdlib.h>
  22 #include <dirent.h>
  23 #include <unistd.h>
  24 #include <hurd.h>
  25 #include <hurd/fd.h>
  26 #include "dirstream.h"
  27
  28 /* Close the directory stream DIRP.
  29    Return 0 if successful, -1 if not.  */
  30 int
  31 __closedir (DIR *dirp)
  32 {
  33   error_t err;
  34
  35   if (dirp == NULL)
  36     {
  37       errno = EINVAL;
  38       return -1;
  39     }
  40
  41   __libc_lock_lock (dirp->__lock);
  42   err = __vm_deallocate (__mach_task_self (),
  43                          (vm_address_t) dirp->__data, dirp->__allocation);
  44   dirp->__data = NULL;
  45   err = _hurd_fd_close (dirp->__fd);
  46
  47   if (err)
  48     {
  49       /* Unlock the DIR.  A failing closedir can be repeated (and may fail
  50          again, but shouldn't deadlock).  */
  51       __libc_lock_unlock (dirp->__lock);
  52       return __hurd_fail (err);
  53     }
  54
  55   /* Clean up the lock and free the structure.  */
  56   __libc_lock_fini (dirp->__lock);
  57   free (dirp);
  58
  59   return 0;
  60 }
  61 weak_alias (__closedir, closedir)