include/asm-arm/mman.h

   1 #ifndef __ARM_MMAN_H__
   2 #define __ARM_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_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 */
  11
  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 */
  17
  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) page tables */
  24 #define MAP_NONBLOCK    0x10000         /* do not block on IO */
  25
  26 #define MS_ASYNC        1               /* sync memory asynchronously */
  27 #define MS_INVALIDATE   2               /* invalidate the caches */
  28 #define MS_SYNC         4               /* synchronous memory sync */
  29
  30 #define MCL_CURRENT     1               /* lock all current mappings */
  31 #define MCL_FUTURE      2               /* lock all future mappings */
  32
  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 */
  38
  39 /* compatibility flags */
  40 #define MAP_ANON        MAP_ANONYMOUS
  41 #define MAP_FILE        0
  42
  43 #endif /* __ARM_MMAN_H__ */