sysdeps/unix/closedir.c

   1 /* Copyright (C) 1991,1993,1995,1996,1998,2002,2003, 2007
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <stddef.h>
  21 #include <stdlib.h>
  22 #include <dirent.h>
  23 #include <unistd.h>
  24 #include <dirstream.h>
  25 #include <not-cancel.h>
  26
  27
  28 /* Close the directory stream DIRP.
  29    Return 0 if successful, -1 if not.  */
  30 int
  31 __closedir (DIR *dirp)
  32 {
  33   int fd;
  34
  35   if (dirp == NULL)
  36     {
  37       __set_errno (EINVAL);
  38       return -1;
  39     }
  40
  41   /* We do not try to synchronize access here.  If some other thread
  42      still uses this handle it is a big mistake and that thread
  43      deserves all the bad data it gets.  */
  44
  45   fd = dirp->fd;
  46
  47 #ifndef NOT_IN_libc
  48   __libc_lock_fini (dirp->lock);
  49 #endif
  50
  51   free ((void *) dirp);
  52
  53   return close_not_cancel (fd);
  54 }
  55 weak_alias (__closedir, closedir)