/*

 * Copyright (C) the libgit2 contributors. All rights reserved.

 *

 * This file is part of libgit2, distributed under the GNU GPL v2 with

 * a Linking Exception. For full terms see the included COPYING file.

 */

#ifndef INCLUDE_map_h__

#define INCLUDE_map_h__

#include "common.h"

/* p_mmap() prot values */

#define GIT_PROT_NONE 0x0

#define GIT_PROT_READ 0x1

#define GIT_PROT_WRITE 0x2

#define GIT_PROT_EXEC 0x4

/* git__mmmap() flags values */

#define GIT_MAP_FILE	0

#define GIT_MAP_SHARED 1

#define GIT_MAP_PRIVATE 2

#define GIT_MAP_TYPE	0xf

#define GIT_MAP_FIXED	0x10

#ifdef __amigaos4__

#define MAP_FAILED 0

#endif

typedef struct { /* memory mapped buffer	*/

	void *data; /* data bytes			*/

	size_t len; /* data length			*/

#ifdef GIT_WIN32

	HANDLE fmh; /* file mapping handle */

#endif

} git_map;

#define GIT_MMAP_VALIDATE(out, len, prot, flags) do { \

	assert(out != NULL && len > 0); \

	assert((prot & GIT_PROT_WRITE) || (prot & GIT_PROT_READ)); \

	assert((flags & GIT_MAP_FIXED) == 0); } while (0)

extern int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset);

extern int p_munmap(git_map *map);

#endif /* INCLUDE_map_h__ */