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2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
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7 * as defined in and that are subject to the Apple Public Source License
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28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
30 * Copyright (c) 1982, 1986, 1993
31 * The Regents of the University of California. All rights reserved.
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by the University of
44 * California, Berkeley and its contributors.
45 * 4. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * @(#)mman.h 8.1 (Berkeley) 6/2/93
65 * Currently unsupported:
67 * [TYM] POSIX_TYPED_MEM_ALLOCATE
68 * [TYM] POSIX_TYPED_MEM_ALLOCATE_CONTIG
69 * [TYM] POSIX_TYPED_MEM_MAP_ALLOCATABLE
70 * [TYM] struct posix_typed_mem_info
71 * [TYM] posix_mem_offset()
72 * [TYM] posix_typed_mem_get_info()
73 * [TYM] posix_typed_mem_open()
79 #include <sys/appleapiopts.h>
80 #include <sys/cdefs.h>
82 #include <sys/_types.h>
85 * [various] The mode_t, off_t, and size_t types shall be defined as
86 * described in <sys/types.h>
89 typedef __darwin_mode_t mode_t
;
94 typedef __darwin_off_t off_t
;
100 typedef __darwin_size_t
size_t;
105 * Protections are chosen from these bits, or-ed together
107 #define PROT_NONE 0x00 /* [MC2] no permissions */
108 #define PROT_READ 0x01 /* [MC2] pages can be read */
109 #define PROT_WRITE 0x02 /* [MC2] pages can be written */
110 #define PROT_EXEC 0x04 /* [MC2] pages can be executed */
113 * Flags contain sharing type and options.
114 * Sharing types; choose one.
116 #define MAP_SHARED 0x0001 /* [MF|SHM] share changes */
117 #define MAP_PRIVATE 0x0002 /* [MF|SHM] changes are private */
118 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
119 #define MAP_COPY MAP_PRIVATE /* Obsolete */
120 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
125 #define MAP_FIXED 0x0010 /* [MF|SHM] interpret addr exactly */
126 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
127 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */
128 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */
129 #define MAP_RESERVED0080 0x0080 /* previously unimplemented MAP_INHERIT */
130 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */
131 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */
132 #define MAP_NOCACHE 0x0400 /* don't cache pages for this mapping */
133 #define MAP_JIT 0x0800 /* Allocate a region that will be used for JIT purposes */
134 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
137 * Process memory locking
139 #define MCL_CURRENT 0x0001 /* [ML] Lock only current memory */
140 #define MCL_FUTURE 0x0002 /* [ML] Lock all future memory as well */
143 * Error return from mmap()
145 #define MAP_FAILED ((void *)-1) /* [MF|SHM] mmap failed */
150 #define MS_ASYNC 0x0001 /* [MF|SIO] return immediately */
151 #define MS_INVALIDATE 0x0002 /* [MF|SIO] invalidate all cached data */
152 #define MS_SYNC 0x0010 /* [MF|SIO] msync synchronously */
154 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
155 #define MS_KILLPAGES 0x0004 /* invalidate pages, leave mapped */
156 #define MS_DEACTIVATE 0x0008 /* deactivate pages, leave mapped */
161 #define MAP_FILE 0x0000 /* map from file (default) */
162 #define MAP_ANON 0x1000 /* allocated from memory, swap space */
163 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
169 #define POSIX_MADV_NORMAL 0 /* [MC1] no further special treatment */
170 #define POSIX_MADV_RANDOM 1 /* [MC1] expect random page refs */
171 #define POSIX_MADV_SEQUENTIAL 2 /* [MC1] expect sequential page refs */
172 #define POSIX_MADV_WILLNEED 3 /* [MC1] will need these pages */
173 #define POSIX_MADV_DONTNEED 4 /* [MC1] dont need these pages */
175 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
176 #define MADV_NORMAL POSIX_MADV_NORMAL
177 #define MADV_RANDOM POSIX_MADV_RANDOM
178 #define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL
179 #define MADV_WILLNEED POSIX_MADV_WILLNEED
180 #define MADV_DONTNEED POSIX_MADV_DONTNEED
181 #define MADV_FREE 5 /* pages unneeded, discard contents */
182 #define MADV_ZERO_WIRED_PAGES 6 /* zero the wired pages that have not been unwired before the entry is deleted */
183 #define MADV_FREE_REUSABLE 7 /* pages can be reused (by anyone) */
184 #define MADV_FREE_REUSE 8 /* caller wants to reuse those pages */
185 #define MADV_CAN_REUSE 9
188 * Return bits from mincore
190 #define MINCORE_INCORE 0x1 /* Page is incore */
191 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */
192 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */
193 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */
194 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */
195 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
203 int munlockall(void);
205 int mlock(const void *, size_t);
209 void * mmap(void *, size_t, int, int, int, off_t
) __DARWIN_ALIAS(mmap
);
212 int mprotect(void *, size_t, int) __DARWIN_ALIAS(mprotect
);
214 int msync(void *, size_t, int) __DARWIN_ALIAS_C(msync
);
216 int munlock(const void *, size_t);
218 int munmap(void *, size_t) __DARWIN_ALIAS(munmap
);
220 int shm_open(const char *, int, ...);
221 int shm_unlink(const char *);
223 int posix_madvise(void *, size_t, int);
225 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
226 int madvise(void *, size_t, int);
227 int mincore(const void *, size_t, char *);
228 int minherit(void *, size_t, int);
233 #ifdef XNU_KERNEL_PRIVATE
234 void pshm_cache_init(void) __attribute__((section("__TEXT, initcode"))); /* for bsd_init() */
235 void pshm_lock_init(void);
238 * XXX routine exported by posix_shm.c, but never used there, only used in
239 * XXX kern_mman.c in the implementation of mmap().
243 int pshm_mmap(struct proc
*p
, struct mmap_args
*uap
, user_addr_t
*retval
,
244 struct fileproc
*fp
, off_t pageoff
);
245 /* Really need to overhaul struct fileops to avoid this... */
248 int pshm_stat(struct pshmnode
*pnode
, void *ub
, int isstat64
);
250 int pshm_truncate(struct proc
*p
, struct fileproc
*fp
, int fd
, off_t length
, int32_t *retval
);
252 #endif /* XNU_KERNEL_PRIVATE */
254 #endif /* !_SYS_MMAN_H_ */