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git.proxmox.com Git - libgit2.git/blob - src/map.h
2 * Copyright (C) the libgit2 contributors. All rights reserved.
4 * This file is part of libgit2, distributed under the GNU GPL v2 with
5 * a Linking Exception. For full terms see the included COPYING file.
7 #ifndef INCLUDE_map_h__
8 #define INCLUDE_map_h__
13 /* p_mmap() prot values */
14 #define GIT_PROT_NONE 0x0
15 #define GIT_PROT_READ 0x1
16 #define GIT_PROT_WRITE 0x2
17 #define GIT_PROT_EXEC 0x4
19 /* git__mmmap() flags values */
20 #define GIT_MAP_FILE 0
21 #define GIT_MAP_SHARED 1
22 #define GIT_MAP_PRIVATE 2
23 #define GIT_MAP_TYPE 0xf
24 #define GIT_MAP_FIXED 0x10
30 typedef struct { /* memory mapped buffer */
31 void *data
; /* data bytes */
32 size_t len
; /* data length */
34 HANDLE fmh
; /* file mapping handle */
38 #define GIT_MMAP_VALIDATE(out, len, prot, flags) do { \
39 assert(out != NULL && len > 0); \
40 assert((prot & GIT_PROT_WRITE) || (prot & GIT_PROT_READ)); \
41 assert((flags & GIT_MAP_FIXED) == 0); } while (0)
43 extern int p_mmap(git_map
*out
, size_t len
, int prot
, int flags
, int fd
, git_off_t offset
);
44 extern int p_munmap(git_map
*map
);
46 #endif /* INCLUDE_map_h__ */