include/babeltrace/compat/mman-internal.h

   1 #ifndef _BABELTRACE_COMPAT_MMAN_H
   2 #define _BABELTRACE_COMPAT_MMAN_H
   3
   4 /*
   5  * babeltrace/compat/mman.h
   6  *
   7  * Copyright (C) 2015-2016  Michael Jeanson <mjeanson@efficios.com>
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  */
  27
  28 #ifdef __MINGW32__
  29
  30 #include <sys/types.h>
  31
  32 #define PROT_NONE       0x0
  33 #define PROT_READ       0x1
  34 #define PROT_WRITE      0x2
  35 #define PROT_EXEC       0x4
  36
  37 #define MAP_FILE        0
  38 #define MAP_SHARED      1
  39 #define MAP_PRIVATE     2
  40 #define MAP_TYPE        0xF
  41 #define MAP_FIXED       0x10
  42 #define MAP_ANONYMOUS   0x20
  43 #define MAP_ANON        MAP_ANONYMOUS
  44 #define MAP_FAILED      ((void *) -1)
  45
  46 /*
  47  * Note that some platforms (e.g. Windows) do not allow read-only
  48  * mappings to exceed the file's size (even within a page).
  49  */
  50 void *bt_mmap(void *addr, size_t length, int prot, int flags, int fd,
  51         off_t offset);
  52
  53 int bt_munmap(void *addr, size_t length);
  54
  55 #else /* __MINGW32__ */
  56
  57 #include <sys/mman.h>
  58
  59 static inline
  60 void *bt_mmap(void *addr, size_t length, int prot, int flags, int fd,
  61         off_t offset)
  62 {
  63         return (void *) mmap(addr, length, prot, flags, fd, offset);
  64 }
  65
  66 static inline
  67 int bt_munmap(void *addr, size_t length)
  68 {
  69         return munmap(addr, length);
  70 }
  71 #endif /* __MINGW32__ */
  72
  73 #ifndef MAP_ANONYMOUS
  74 # ifdef MAP_ANON
  75 #   define MAP_ANONYMOUS MAP_ANON
  76 # endif
  77 #endif
  78
  79 #endif /* _BABELTRACE_COMPAT_MMAN_H */