1 #ifndef __I386_MMAN_H__
2 #define __I386_MMAN_H__
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_SEM 0x8 /* page may be used for atomic ops */
8 #define PROT_NONE 0x0 /* page can not be accessed */
9 #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
10 #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
12 #define MAP_SHARED 0x01 /* Share changes */
13 #define MAP_PRIVATE 0x02 /* Changes are private */
14 #define MAP_TYPE 0x0f /* Mask for type of mapping */
15 #define MAP_FIXED 0x10 /* Interpret addr exactly */
16 #define MAP_ANONYMOUS 0x20 /* don't use a file */
18 #define MAP_GROWSDOWN 0x0100 /* stack-like segment */
19 #define MAP_DENYWRITE 0x0800 /* ETXTBSY */
20 #define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
21 #define MAP_LOCKED 0x2000 /* pages are locked */
22 #define MAP_NORESERVE 0x4000 /* don't check for reservations */
23 #define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
24 #define MAP_NONBLOCK 0x10000 /* do not block on IO */
26 #define MS_ASYNC 1 /* sync memory asynchronously */
27 #define MS_INVALIDATE 2 /* invalidate the caches */
28 #define MS_SYNC 4 /* synchronous memory sync */
30 #define MCL_CURRENT 1 /* lock all current mappings */
31 #define MCL_FUTURE 2 /* lock all future mappings */
33 #define MADV_NORMAL 0x0 /* default page-in behavior */
34 #define MADV_RANDOM 0x1 /* page-in minimum required */
35 #define MADV_SEQUENTIAL 0x2 /* read-ahead aggressively */
36 #define MADV_WILLNEED 0x3 /* pre-fault pages */
37 #define MADV_DONTNEED 0x4 /* discard these pages */
39 /* compatibility flags */
40 #define MAP_ANON MAP_ANONYMOUS
43 #endif /* __I386_MMAN_H__ */
