1 | /* |
2 | * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ |
29 | /*- |
30 | * Copyright (c) 1982, 1986, 1993 |
31 | * The Regents of the University of California. All rights reserved. |
32 | * |
33 | * Redistribution and use in source and binary forms, with or without |
34 | * modification, are permitted provided that the following conditions |
35 | * are met: |
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. |
48 | * |
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 |
53 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
54 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
55 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
56 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
57 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
58 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
59 | * SUCH DAMAGE. |
60 | * |
61 | * @(#)mman.h 8.1 (Berkeley) 6/2/93 |
62 | */ |
63 | |
64 | /* |
65 | * Currently unsupported: |
66 | * |
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() |
74 | */ |
75 | |
76 | #ifndef _SYS_MMAN_H_ |
77 | #define _SYS_MMAN_H_ |
78 | |
79 | #include <sys/appleapiopts.h> |
80 | #include <sys/cdefs.h> |
81 | |
82 | #include <sys/_types.h> |
83 | |
84 | /* |
85 | * [various] The mode_t, off_t, and size_t types shall be defined as |
86 | * described in <sys/types.h> |
87 | */ |
88 | #include <sys/_types/_mode_t.h> |
89 | #include <sys/_types/_off_t.h> |
90 | #include <sys/_types/_size_t.h> |
91 | |
92 | /* |
93 | * Protections are chosen from these bits, or-ed together |
94 | */ |
95 | #define PROT_NONE 0x00 /* [MC2] no permissions */ |
96 | #define PROT_READ 0x01 /* [MC2] pages can be read */ |
97 | #define PROT_WRITE 0x02 /* [MC2] pages can be written */ |
98 | #define PROT_EXEC 0x04 /* [MC2] pages can be executed */ |
99 | |
100 | /* |
101 | * Flags contain sharing type and options. |
102 | * Sharing types; choose one. |
103 | */ |
104 | #define MAP_SHARED 0x0001 /* [MF|SHM] share changes */ |
105 | #define MAP_PRIVATE 0x0002 /* [MF|SHM] changes are private */ |
106 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
107 | #define MAP_COPY MAP_PRIVATE /* Obsolete */ |
108 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
109 | |
110 | /* |
111 | * Other flags |
112 | */ |
113 | #define MAP_FIXED 0x0010 /* [MF|SHM] interpret addr exactly */ |
114 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
115 | #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ |
116 | #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ |
117 | #define MAP_RESERVED0080 0x0080 /* previously unimplemented MAP_INHERIT */ |
118 | #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ |
119 | #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ |
120 | #define MAP_NOCACHE 0x0400 /* don't cache pages for this mapping */ |
121 | #define MAP_JIT 0x0800 /* Allocate a region that will be used for JIT purposes */ |
122 | |
123 | /* |
124 | * Mapping type |
125 | */ |
126 | #define MAP_FILE 0x0000 /* map from file (default) */ |
127 | #define MAP_ANON 0x1000 /* allocated from memory, swap space */ |
128 | #define MAP_ANONYMOUS MAP_ANON |
129 | |
130 | /* |
131 | * The MAP_RESILIENT_* flags can be used when the caller wants to map some |
132 | * possibly unreliable memory and be able to access it safely, possibly |
133 | * getting the wrong contents rather than raising any exception. |
134 | * For safety reasons, such mappings have to be read-only (PROT_READ access |
135 | * only). |
136 | * |
137 | * MAP_RESILIENT_CODESIGN: |
138 | * accessing this mapping will not generate code-signing violations, |
139 | * even if the contents are tainted. |
140 | * MAP_RESILIENT_MEDIA: |
141 | * accessing this mapping will not generate an exception if the contents |
142 | * are not available (unreachable removable or remote media, access beyond |
143 | * end-of-file, ...). Missing contents will be replaced with zeroes. |
144 | */ |
145 | #define MAP_RESILIENT_CODESIGN 0x2000 /* no code-signing failures */ |
146 | #define MAP_RESILIENT_MEDIA 0x4000 /* no backing-store failures */ |
147 | |
148 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
149 | |
150 | /* |
151 | * Process memory locking |
152 | */ |
153 | #define MCL_CURRENT 0x0001 /* [ML] Lock only current memory */ |
154 | #define MCL_FUTURE 0x0002 /* [ML] Lock all future memory as well */ |
155 | |
156 | /* |
157 | * Error return from mmap() |
158 | */ |
159 | #define MAP_FAILED ((void *)-1) /* [MF|SHM] mmap failed */ |
160 | |
161 | /* |
162 | * msync() flags |
163 | */ |
164 | #define MS_ASYNC 0x0001 /* [MF|SIO] return immediately */ |
165 | #define MS_INVALIDATE 0x0002 /* [MF|SIO] invalidate all cached data */ |
166 | #define MS_SYNC 0x0010 /* [MF|SIO] msync synchronously */ |
167 | |
168 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
169 | #define MS_KILLPAGES 0x0004 /* invalidate pages, leave mapped */ |
170 | #define MS_DEACTIVATE 0x0008 /* deactivate pages, leave mapped */ |
171 | |
172 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
173 | |
174 | |
175 | /* |
176 | * Advice to madvise |
177 | */ |
178 | #define POSIX_MADV_NORMAL 0 /* [MC1] no further special treatment */ |
179 | #define POSIX_MADV_RANDOM 1 /* [MC1] expect random page refs */ |
180 | #define POSIX_MADV_SEQUENTIAL 2 /* [MC1] expect sequential page refs */ |
181 | #define POSIX_MADV_WILLNEED 3 /* [MC1] will need these pages */ |
182 | #define POSIX_MADV_DONTNEED 4 /* [MC1] dont need these pages */ |
183 | |
184 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
185 | #define MADV_NORMAL POSIX_MADV_NORMAL |
186 | #define MADV_RANDOM POSIX_MADV_RANDOM |
187 | #define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL |
188 | #define MADV_WILLNEED POSIX_MADV_WILLNEED |
189 | #define MADV_DONTNEED POSIX_MADV_DONTNEED |
190 | #define MADV_FREE 5 /* pages unneeded, discard contents */ |
191 | #define MADV_ZERO_WIRED_PAGES 6 /* zero the wired pages that have not been unwired before the entry is deleted */ |
192 | #define MADV_FREE_REUSABLE 7 /* pages can be reused (by anyone) */ |
193 | #define MADV_FREE_REUSE 8 /* caller wants to reuse those pages */ |
194 | #define MADV_CAN_REUSE 9 |
195 | #define MADV_PAGEOUT 10 /* page out now (internal only) */ |
196 | |
197 | /* |
198 | * Return bits from mincore |
199 | */ |
200 | #define MINCORE_INCORE 0x1 /* Page is incore */ |
201 | #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ |
202 | #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ |
203 | #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ |
204 | #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ |
205 | #define MINCORE_PAGED_OUT 0x20 /* Page has been paged out */ |
206 | #define MINCORE_COPIED 0x40 /* Page has been copied */ |
207 | #define MINCORE_ANONYMOUS 0x80 /* Page belongs to an anonymous object */ |
208 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
209 | |
210 | |
211 | #ifndef KERNEL |
212 | |
213 | __BEGIN_DECLS |
214 | /* [ML] */ |
215 | int mlockall(int); |
216 | int munlockall(void); |
217 | /* [MR] */ |
218 | int mlock(const void *, size_t); |
219 | #ifndef _MMAP |
220 | #define _MMAP |
221 | /* [MC3]*/ |
222 | void * mmap(void *, size_t, int, int, int, off_t) __DARWIN_ALIAS(mmap); |
223 | #endif |
224 | /* [MPR] */ |
225 | int mprotect(void *, size_t, int) __DARWIN_ALIAS(mprotect); |
226 | /* [MF|SIO] */ |
227 | int msync(void *, size_t, int) __DARWIN_ALIAS_C(msync); |
228 | /* [MR] */ |
229 | int munlock(const void *, size_t); |
230 | /* [MC3]*/ |
231 | int munmap(void *, size_t) __DARWIN_ALIAS(munmap); |
232 | /* [SHM] */ |
233 | int shm_open(const char *, int, ...); |
234 | int shm_unlink(const char *); |
235 | /* [ADV] */ |
236 | int posix_madvise(void *, size_t, int); |
237 | |
238 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
239 | int madvise(void *, size_t, int); |
240 | int mincore(const void *, size_t, char *); |
241 | int minherit(void *, size_t, int); |
242 | #endif |
243 | |
244 | #ifdef PRIVATE |
245 | int mremap_encrypted(void *, size_t, __uint32_t, __uint32_t, __uint32_t); |
246 | #endif |
247 | |
248 | __END_DECLS |
249 | |
250 | #else /* KERNEL */ |
251 | #ifdef XNU_KERNEL_PRIVATE |
252 | void pshm_cache_init(void); /* for bsd_init() */ |
253 | void pshm_lock_init(void); |
254 | |
255 | /* |
256 | * XXX routine exported by posix_shm.c, but never used there, only used in |
257 | * XXX kern_mman.c in the implementation of mmap(). |
258 | */ |
259 | struct mmap_args; |
260 | struct fileproc; |
261 | int pshm_mmap(struct proc *p, struct mmap_args *uap, user_addr_t *retval, |
262 | struct fileproc *fp, off_t pageoff); |
263 | /* Really need to overhaul struct fileops to avoid this... */ |
264 | struct pshmnode; |
265 | struct stat; |
266 | int pshm_stat(struct pshmnode *pnode, void *ub, int isstat64); |
267 | struct fileproc; |
268 | int pshm_truncate(struct proc *p, struct fileproc *fp, int fd, off_t length, int32_t *retval); |
269 | |
270 | #endif /* XNU_KERNEL_PRIVATE */ |
271 | #endif /* KERNEL */ |
272 | #endif /* !_SYS_MMAN_H_ */ |
273 | |