1  /* Copyright (C) 1993-2023 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     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <stddef.h>
      20  #include <dirent.h>
      21  #include <unistd.h>
      22  #include "dirstream.h"
      23  
      24  /* Seek to position POS in DIRP.  */
      25  void
      26  __seekdir (DIR *dirp, long int pos)
      27  {
      28    __libc_lock_lock (dirp->__lock);
      29    /* Change our entry index pointer to POS and discard any data already
      30       read.  The next `readdir' call will notice the empty block and read
      31       anew from the location in DIRP->__entry_ptr and reset the other state
      32       variables.  */
      33    dirp->__entry_ptr = pos;
      34    dirp->__size = 0;
      35    __libc_lock_unlock (dirp->__lock);
      36  }
      37  
      38  weak_alias (__seekdir, seekdir)