sysdeps/unix/rewinddir.c

   1 /* Copyright (C) 1991, 1995-1998, 2005, 2011 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 <stddef.h>
  20 #include <dirent.h>
  21 #include <sys/types.h>
  22 #include <unistd.h>
  23 #include <dirstream.h>
  24
  25 /* Rewind DIRP to the beginning of the directory.  */
  26 void
  27 rewinddir (dirp)
  28      DIR *dirp;
  29 {
  30 #ifndef NOT_IN_libc
  31   __libc_lock_lock (dirp->lock);
  32 #endif
  33   (void) __lseek (dirp->fd, (off_t) 0, SEEK_SET);
  34   dirp->filepos = 0;
  35   dirp->offset = 0;
  36   dirp->size = 0;
  37 #ifndef NOT_IN_libc
  38   __libc_lock_unlock (dirp->lock);
  39 #endif
  40 }
  41 libc_hidden_def (rewinddir)