sysdeps/mach/hurd/seekdir.c

   1 /* Copyright (C) 1993, 1994, 1995 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 Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 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 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <stddef.h>
  22 #include <dirent.h>
  23 #include <unistd.h>
  24 #include "dirstream.h"
  25
  26 /* Seek to position POS in DIRP.  */
  27 void
  28 DEFUN(seekdir, (dirp, pos), DIR *dirp AND __off_t pos)
  29 {
  30   /* Change our entry index pointer to POS and discard any data already
  31      read.  The next `readdir' call will notice the empty block and read
  32      anew from the location in DIRP->__entry_ptr and reset the other state
  33      variables.  */
  34   dirp->__entry_ptr = pos;
  35   dirp->__size = 0;
  36 }