sysdeps/unix/sysv/linux/ia64/getpagesize.c

   1 /* Copyright (C) 1999, 2000, 2001, 2002, 2004 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 <assert.h>
  19 #include <unistd.h>
  20 #include <sys/param.h>
  21
  22 #include <ldsodefs.h>
  23 #include <sysdep.h>
  24 #include <sys/syscall.h>
  25
  26 /* Return the system page size.  The return value will depend on how
  27    the kernel is configured.  A program must use this call to
  28    determine the page size to ensure proper alignment for calls such
  29    as mmap and friends.  --davidm 99/11/30 */
  30
  31 int
  32 __getpagesize ()
  33 {
  34   assert (GLRO(dl_pagesize) != 0);
  35   return GLRO(dl_pagesize);
  36 }
  37 libc_hidden_def (__getpagesize)
  38 weak_alias (__getpagesize, getpagesize)