1 /* Definitions for POSIX memory map interface. Linux/HPPA version.
2 Copyright (C) 1997, 1998, 2000, 2003 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 Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the 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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
23 /* these are basically taken from the kernel definitions */
25 #define PROT_READ 0x1 /* page can be read */
26 #define PROT_WRITE 0x2 /* page can be written */
27 #define PROT_EXEC 0x4 /* page can be executed */
28 #define PROT_NONE 0x0 /* page can not be accessed */
29 #define PROT_GROWSDOWN 0x01000000 /* Extend change to start of
30 growsdown vma (mprotect only). */
31 #define PROT_GROWSUP 0x02000000 /* Extend change to start of
32 growsup vma (mprotect only). */
34 #define MAP_SHARED 0x01 /* Share changes */
35 #define MAP_PRIVATE 0x02 /* Changes are private */
36 #define MAP_TYPE 0x03 /* Mask for type of mapping */
37 #define MAP_FIXED 0x04 /* Interpret addr exactly */
38 #define MAP_ANONYMOUS 0x10 /* don't use a file */
40 #define MAP_DENYWRITE 0x0800 /* ETXTBSY */
41 #define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
42 #define MAP_LOCKED 0x2000 /* pages are locked */
43 #define MAP_NORESERVE 0x4000 /* don't check for reservations */
44 #define MAP_GROWSDOWN 0x8000 /* stack-like segment */
45 #define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
46 #define MAP_NONBLOCK 0x20000 /* do not block on IO */
47 #define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could
50 #define MS_SYNC 1 /* synchronous memory sync */
51 #define MS_ASYNC 2 /* sync memory asynchronously */
52 #define MS_INVALIDATE 4 /* invalidate the caches */
54 #define MCL_CURRENT 1 /* lock all current mappings */
55 #define MCL_FUTURE 2 /* lock all future mappings */
57 /* Advice to "madvise" */
59 # define MADV_NORMAL 0 /* no further special treatment */
60 # define MADV_RANDOM 1 /* expect random page references */
61 # define MADV_SEQUENTIAL 2 /* expect sequential page references */
62 # define MADV_WILLNEED 3 /* will need these pages */
63 # define MADV_DONTNEED 4 /* dont need these pages */
64 # define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
65 # define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */
66 # define MADV_VPS_INHERIT 7 /* Inherit parents page size */
67 # define MADV_REMOVE 9 /* Remove these pages and resources. */
68 # define MADV_DONTFORK 10 /* Do not inherit across fork. */
69 # define MADV_DOFORK 11 /* Do inherit across fork. */
72 /* The range 12-64 is reserved for page size specification. */
73 #define MADV_4K_PAGES 12 /* Use 4K pages */
74 #define MADV_16K_PAGES 14 /* Use 16K pages */
75 #define MADV_64K_PAGES 16 /* Use 64K pages */
76 #define MADV_256K_PAGES 18 /* Use 256K pages */
77 #define MADV_1M_PAGES 20 /* Use 1 Megabyte pages */
78 #define MADV_4M_PAGES 22 /* Use 4 Megabyte pages */
79 #define MADV_16M_PAGES 24 /* Use 16 Megabyte pages */
80 #define MADV_64M_PAGES 26 /* Use 64 Megabyte pages */
82 /* compatibility flags */
83 #define MAP_ANON MAP_ANONYMOUS
85 #define MAP_VARIABLE 0
87 /* Flags for `mremap'. */
89 # define MREMAP_MAYMOVE 1
90 # define MREMAP_FIXED 2