1 /* Definitions for POSIX memory map inerface. Linux/PowerPC version.
2 Copyright (C) 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
21 # error "Never include this file directly. Use <sys/mman.h> instead"
24 /* The following definitions basically come from the kernel headers.
25 But the kernel header is not namespace clean. */
28 /* Protections are chosen from these bits, OR'd together. The
29 implementation does not necessarily support PROT_EXEC or PROT_WRITE
30 without PROT_READ. The only guarantees are that no writing will be
31 allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */
33 #define PROT_READ 0x1 /* Page can be read. */
34 #define PROT_WRITE 0x2 /* Page can be written. */
35 #define PROT_EXEC 0x4 /* Page can be executed. */
36 #define PROT_NONE 0x0 /* Page can not be accessed. */
38 /* Sharing types (must choose one and only one of these). */
39 #define MAP_SHARED 0x001 /* Share changes. */
40 #define MAP_PRIVATE 0x002 /* Changes are private. */
42 # define MAP_TYPE 0x00f /* Mask for type of mapping. */
46 #define MAP_FIXED 0x010 /* Interpret addr exactly. */
48 # define MAP_FILE 0x000
49 # define MAP_ANONYMOUS 0x020 /* Don't use a file. */
50 # define MAP_ANON MAP_ANONYMOUS
53 /* These are Linux-specific. */
55 # define MAP_GROWSDOWN 0x0100 /* Stack-like segment. */
56 # define MAP_DENYWRITE 0x0800 /* ETXTBSY */
57 # define MAP_EXECUTABLE 0x1000 /* Mark it as an executable. */
60 /* Flags to `msync'. */
61 #define MS_ASYNC 1 /* Sync memory asynchronously. */
62 #define MS_SYNC 0 /* Synchronous memory sync. */
63 #define MS_INVALIDATE 2 /* Invalidate the caches. */
65 /* Flags for `mlockall'. */
66 #define MCL_CURRENT 0x2000 /* Lock all currently mapped pages. */
67 #define MCL_FUTURE 0x4000 /* Lock all additions to address
71 /* Flags for `mremap'. */
73 # define MREMAP_MAYMOVE 1