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d15a8404 UD |
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. | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
b15cb495 UD |
19 | |
20 | #ifndef _SYS_MMAN_H | |
21 | # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." | |
22 | #endif | |
23 | ||
24 | /* these are basically taken from the kernel definitions */ | |
25 | ||
26 | #define PROT_READ 0x1 /* page can be read */ | |
27 | #define PROT_WRITE 0x2 /* page can be written */ | |
28 | #define PROT_EXEC 0x4 /* page can be executed */ | |
29 | #define PROT_NONE 0x0 /* page can not be accessed */ | |
ed91314e UD |
30 | #define PROT_GROWSDOWN 0x01000000 /* Extend change to start of |
31 | growsdown vma (mprotect only). */ | |
32 | #define PROT_GROWSUP 0x02000000 /* Extend change to start of | |
33 | growsup vma (mprotect only). */ | |
b15cb495 UD |
34 | |
35 | #define MAP_SHARED 0x01 /* Share changes */ | |
36 | #define MAP_PRIVATE 0x02 /* Changes are private */ | |
37 | #define MAP_TYPE 0x03 /* Mask for type of mapping */ | |
38 | #define MAP_FIXED 0x04 /* Interpret addr exactly */ | |
39 | #define MAP_ANONYMOUS 0x10 /* don't use a file */ | |
40 | ||
41 | #define MAP_DENYWRITE 0x0800 /* ETXTBSY */ | |
42 | #define MAP_EXECUTABLE 0x1000 /* mark it as an executable */ | |
43 | #define MAP_LOCKED 0x2000 /* pages are locked */ | |
44 | #define MAP_NORESERVE 0x4000 /* don't check for reservations */ | |
45 | #define MAP_GROWSDOWN 0x8000 /* stack-like segment */ | |
d15a8404 UD |
46 | #define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */ |
47 | #define MAP_NONBLOCK 0x20000 /* do not block on IO */ | |
b15cb495 UD |
48 | |
49 | #define MS_SYNC 1 /* synchronous memory sync */ | |
50 | #define MS_ASYNC 2 /* sync memory asynchronously */ | |
51 | #define MS_INVALIDATE 4 /* invalidate the caches */ | |
52 | ||
53 | #define MCL_CURRENT 1 /* lock all current mappings */ | |
54 | #define MCL_FUTURE 2 /* lock all future mappings */ | |
55 | ||
56 | #define MADV_NORMAL 0 /* no further special treatment */ | |
57 | #define MADV_RANDOM 1 /* expect random page references */ | |
58 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | |
59 | #define MADV_WILLNEED 3 /* will need these pages */ | |
60 | #define MADV_DONTNEED 4 /* dont need these pages */ | |
61 | #define MADV_SPACEAVAIL 5 /* insure that resources are reserved */ | |
62 | #define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */ | |
63 | #define MADV_VPS_INHERIT 7 /* Inherit parents page size */ | |
64 | ||
65 | /* The range 12-64 is reserved for page size specification. */ | |
66 | #define MADV_4K_PAGES 12 /* Use 4K pages */ | |
67 | #define MADV_16K_PAGES 14 /* Use 16K pages */ | |
68 | #define MADV_64K_PAGES 16 /* Use 64K pages */ | |
69 | #define MADV_256K_PAGES 18 /* Use 256K pages */ | |
70 | #define MADV_1M_PAGES 20 /* Use 1 Megabyte pages */ | |
71 | #define MADV_4M_PAGES 22 /* Use 4 Megabyte pages */ | |
72 | #define MADV_16M_PAGES 24 /* Use 16 Megabyte pages */ | |
73 | #define MADV_64M_PAGES 26 /* Use 64 Megabyte pages */ | |
74 | ||
75 | /* compatibility flags */ | |
76 | #define MAP_ANON MAP_ANONYMOUS | |
77 | #define MAP_FILE 0 | |
78 | #define MAP_VARIABLE 0 | |
79 | ||
80 | /* Flags for `mremap'. */ | |
81 | #ifdef __USE_GNU | |
82 | # define MREMAP_MAYMOVE 1 | |
83 | #endif |