sysdeps/posix/closedir.c

   1 /* Copyright (C) 1991-2017 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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stddef.h>
  20 #include <stdlib.h>
  21 #include <dirent.h>
  22 #include <unistd.h>
  23 #include <dirstream.h>
  24 #include <not-cancel.h>
  25
  26
  27 /* Close the directory stream DIRP.
  28    Return 0 if successful, -1 if not.  */
  29 int
  30 __closedir (DIR *dirp)
  31 {
  32   int fd;
  33
  34   if (dirp == NULL)
  35     {
  36       __set_errno (EINVAL);
  37       return -1;
  38     }
  39
  40   /* We do not try to synchronize access here.  If some other thread
  41      still uses this handle it is a big mistake and that thread
  42      deserves all the bad data it gets.  */
  43
  44   fd = dirp->fd;
  45
  46 #if IS_IN (libc)
  47   __libc_lock_fini (dirp->lock);
  48 #endif
  49
  50   free ((void *) dirp);
  51
  52   return close_not_cancel (fd);
  53 }
  54 weak_alias (__closedir, closedir)