60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/* Emulation of getpagesize() for systems that need it.
|
|
Copyright (C) 1991-2003 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Bash, the Bourne-Again SHell.
|
|
|
|
Bash 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#if defined (HAVE_UNISTD_H)
|
|
# ifdef _MINIX
|
|
# include <sys/types.h>
|
|
# endif
|
|
# include <unistd.h>
|
|
# if defined (_SC_PAGESIZE)
|
|
# define getpagesize() sysconf(_SC_PAGESIZE)
|
|
# else
|
|
# if defined (_SC_PAGE_SIZE)
|
|
# define getpagesize() sysconf(_SC_PAGE_SIZE)
|
|
# endif /* _SC_PAGE_SIZE */
|
|
# endif /* _SC_PAGESIZE */
|
|
#endif
|
|
|
|
#if !defined (getpagesize)
|
|
# if defined (HAVE_SYS_PARAM_H)
|
|
# include <sys/param.h>
|
|
# endif
|
|
# if defined (PAGESIZE)
|
|
# define getpagesize() PAGESIZE
|
|
# else /* !PAGESIZE */
|
|
# if defined (EXEC_PAGESIZE)
|
|
# define getpagesize() EXEC_PAGESIZE
|
|
# else /* !EXEC_PAGESIZE */
|
|
# if defined (NBPG)
|
|
# if !defined (CLSIZE)
|
|
# define CLSIZE 1
|
|
# endif /* !CLSIZE */
|
|
# define getpagesize() (NBPG * CLSIZE)
|
|
# else /* !NBPG */
|
|
# if defined (NBPC)
|
|
# define getpagesize() NBPC
|
|
# endif /* NBPC */
|
|
# endif /* !NBPG */
|
|
# endif /* !EXEC_PAGESIZE */
|
|
# endif /* !PAGESIZE */
|
|
#endif /* !getpagesize */
|
|
|
|
#if !defined (getpagesize)
|
|
# define getpagesize() 4096 /* Just punt and use reasonable value */
|
|
#endif
|