mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-19 11:30:06 +00:00
687adf1dd0
* sysdeps/unix/sysv/linux/alpha/bits/mman.h: Dyke out the unimplemented OSF/1 definitions so that they are not accidentally seen.
84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/* Definitions for POSIX memory map interface. Linux/Alpha version.
|
|
Copyright (C) 1997, 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _SYS_MMAN_H
|
|
# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
|
|
#endif
|
|
|
|
/* The following definitions basically come from the kernel headers.
|
|
But the kernel header is not namespace clean. */
|
|
|
|
|
|
/* Protections are chosen from these bits, OR'd together. The
|
|
implementation does not necessarily support PROT_EXEC or PROT_WRITE
|
|
without PROT_READ. The only guarantees are that no writing will be
|
|
allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */
|
|
|
|
#define PROT_READ 0x1 /* Page can be read. */
|
|
#define PROT_WRITE 0x2 /* Page can be written. */
|
|
#define PROT_EXEC 0x4 /* Page can be executed. */
|
|
#define PROT_NONE 0x0 /* Page can not be accessed. */
|
|
|
|
/* Sharing types (must choose one and only one of these). */
|
|
#define MAP_SHARED 0x01 /* Share changes. */
|
|
#define MAP_PRIVATE 0x02 /* Changes are private. */
|
|
#ifdef __USE_MISC
|
|
# define MAP_TYPE 0x0f /* Mask for type of mapping. */
|
|
#endif
|
|
|
|
/* Other flags. */
|
|
#define MAP_FIXED 0x100 /* Interpret addr exactly. */
|
|
#ifdef __USE_MISC
|
|
# define MAP_FILE 0
|
|
# define MAP_ANONYMOUS 0x10 /* Don't use a file. */
|
|
# define MAP_ANON MAP_ANONYMOUS
|
|
#endif
|
|
|
|
/* Not used by Linux, but here to make sure we don't clash with
|
|
OSF/1 defines. */
|
|
#if 0 && defined(__USE_BSD)
|
|
# define MAP_HASSEMAPHORE 0x0200
|
|
# define MAP_INHERIT 0x0400
|
|
# define MAP_UNALIGNED 0x0800
|
|
#endif
|
|
|
|
/* These are Linux-specific. */
|
|
#ifdef __USE_MISC
|
|
# define MAP_GROWSDOWN 0x1000 /* Stack-like segment. */
|
|
# define MAP_DENYWRITE 0x2000 /* ETXTBSY */
|
|
# define MAP_EXECUTABLE 0x4000 /* Mark it as an executable. */
|
|
# define MAP_LOCKED 0x8000 /* Lock the mapping. */
|
|
# define MAP_NORESERVE 0x10000 /* Don't check for reservations. */
|
|
#endif
|
|
|
|
/* Flags to `msync'. */
|
|
#define MS_ASYNC 1 /* Sync memory asynchronously. */
|
|
#define MS_SYNC 2 /* Synchronous memory sync. */
|
|
#define MS_INVALIDATE 4 /* Invalidate the caches. */
|
|
|
|
/* Flags for `mlockall'. */
|
|
#define MCL_CURRENT 8192 /* Lock all currently mapped pages. */
|
|
#define MCL_FUTURE 16384 /* Lock all additions to address
|
|
space. */
|
|
|
|
/* Flags for `mremap'. */
|
|
#ifdef __USE_GNU
|
|
# define MREMAP_MAYMOVE 1
|
|
#endif
|