File: /usr/src/linux/include/asm/mman.h

1     #ifndef __I386_MMAN_H__
2     #define __I386_MMAN_H__
3     
4     #define PROT_READ	0x1		/* page can be read */
5     #define PROT_WRITE	0x2		/* page can be written */
6     #define PROT_EXEC	0x4		/* page can be executed */
7     #define PROT_NONE	0x0		/* page can not be accessed */
8     
9     #define MAP_SHARED	0x01		/* Share changes */
10     #define MAP_PRIVATE	0x02		/* Changes are private */
11     #define MAP_TYPE	0x0f		/* Mask for type of mapping */
12     #define MAP_FIXED	0x10		/* Interpret addr exactly */
13     #define MAP_ANONYMOUS	0x20		/* don't use a file */
14     
15     #define MAP_GROWSDOWN	0x0100		/* stack-like segment */
16     #define MAP_DENYWRITE	0x0800		/* ETXTBSY */
17     #define MAP_EXECUTABLE	0x1000		/* mark it as an executable */
18     #define MAP_LOCKED	0x2000		/* pages are locked */
19     #define MAP_NORESERVE	0x4000		/* don't check for reservations */
20     
21     #define MS_ASYNC	1		/* sync memory asynchronously */
22     #define MS_INVALIDATE	2		/* invalidate the caches */
23     #define MS_SYNC		4		/* synchronous memory sync */
24     
25     #define MCL_CURRENT	1		/* lock all current mappings */
26     #define MCL_FUTURE	2		/* lock all future mappings */
27     
28     #define MADV_NORMAL	0x0		/* default page-in behavior */
29     #define MADV_RANDOM	0x1		/* page-in minimum required */
30     #define MADV_SEQUENTIAL	0x2		/* read-ahead aggressively */
31     #define MADV_WILLNEED	0x3		/* pre-fault pages */
32     #define MADV_DONTNEED	0x4		/* discard these pages */
33     
34     /* compatibility flags */
35     #define MAP_ANON	MAP_ANONYMOUS
36     #define MAP_FILE	0
37     
38     #endif /* __I386_MMAN_H__ */
39