headers/posix/sys/mman.h

   1 /*
   2  * Copyright 2008-2012 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _SYS_MMAN_H
   6 #define _SYS_MMAN_H
   7
   8
   9 #include <sys/cdefs.h>
  10 #include <sys/types.h>
  11
  12
  13 /* memory protection for mmap() and others; assignment compatible with
  14    B_{READ,WRITE,EXECUTE}_AREA */
  15 #define PROT_READ               0x01
  16 #define PROT_WRITE              0x02
  17 #define PROT_EXEC               0x04
  18 #define PROT_NONE               0x00
  19
  20 /* mmap() flags */
  21 #define MAP_SHARED              0x01                    /* changes are seen by others */
  22 #define MAP_PRIVATE             0x02                    /* changes are only seen by caller */
  23 #define MAP_FIXED               0x04                    /* require mapping to specified addr */
  24 #define MAP_ANONYMOUS   0x08                    /* no underlying object */
  25 #define MAP_ANON                MAP_ANONYMOUS
  26
  27 /* mmap() error return code */
  28 #define MAP_FAILED              ((void*)-1)
  29
  30 /* msync() flags */
  31 #define MS_ASYNC                0x01
  32 #define MS_SYNC                 0x02
  33 #define MS_INVALIDATE   0x04
  34
  35 /* posix_madvise() values */
  36 #define POSIX_MADV_NORMAL               1
  37 #define POSIX_MADV_SEQUENTIAL   2
  38 #define POSIX_MADV_RANDOM               3
  39 #define POSIX_MADV_WILLNEED             4
  40 #define POSIX_MADV_DONTNEED             5
  41
  42
  43 __BEGIN_DECLS
  44
  45 void*   mmap(void* address, size_t length, int protection, int flags,
  46                         int fd, off_t offset);
  47 int             munmap(void* address, size_t length);
  48
  49 int             mprotect(void* address, size_t length, int protection);
  50 int             msync(void* address, size_t length, int flags);
  51
  52 int             posix_madvise(void* address, size_t length, int advice);
  53
  54 int             shm_open(const char* name, int openMode, mode_t permissions);
  55 int             shm_unlink(const char* name);
  56
  57 __END_DECLS
  58
  59
  60 #endif  /* _SYS_MMAN_H */