mirror of
https://github.com/coreutils/coreutils.git
synced 2024-12-03 06:53:31 +08:00
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/* Emulate getpagesize on systems that lack it.
|
|
Copyright (C) 1999, 2000, 2004, 2005 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
|
|
USA. */
|
|
|
|
#ifndef HAVE_GETPAGESIZE
|
|
|
|
#include <unistd.h>
|
|
|
|
#if !defined getpagesize && defined _SC_PAGESIZE
|
|
# if !(defined VMS && __VMS_VER < 70000000)
|
|
# define getpagesize() sysconf (_SC_PAGESIZE)
|
|
# endif
|
|
#endif
|
|
|
|
#if !defined getpagesize && defined VMS
|
|
# ifdef __ALPHA
|
|
# define getpagesize() 8192
|
|
# else
|
|
# define getpagesize() 512
|
|
# endif
|
|
#endif
|
|
|
|
/* This is for BeOS. */
|
|
#if !defined getpagesize && HAVE_OS_H
|
|
# include <OS.h>
|
|
# if defined B_PAGE_SIZE
|
|
# define getpagesize() B_PAGE_SIZE
|
|
# endif
|
|
#endif
|
|
|
|
#if !defined getpagesize && HAVE_SYS_PARAM_H
|
|
# include <sys/param.h>
|
|
# ifdef EXEC_PAGESIZE
|
|
# define getpagesize() EXEC_PAGESIZE
|
|
# else
|
|
# ifdef NBPG
|
|
# ifndef CLSIZE
|
|
# define CLSIZE 1
|
|
# endif
|
|
# define getpagesize() (NBPG * CLSIZE)
|
|
# else
|
|
# ifdef NBPC
|
|
# define getpagesize() NBPC
|
|
# endif
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#endif /* not HAVE_GETPAGESIZE */
|