usr/src/lib/libbc/inc/include/sys/mman.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _sys_mman_h
  28 #define _sys_mman_h
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 /*
  33  * Protections are chosen from these bits, or-ed together.
  34  * Note - not all implementations literally provide all possible
  35  * combinations.  PROT_WRITE is often implemented as (PROT_READ |
  36  * PROT_WRITE) and (PROT_EXECUTE as PROT_READ | PROT_EXECUTE).
  37  * However, no implementation will permit a write to succeed
  38  * where PROT_WRITE has not been set.  Also, no implementation will
  39  * allow any access to succeed where prot is specified as PROT_NONE.
  40  */
  41 #define PROT_READ       0x1             /* pages can be read */
  42 #define PROT_WRITE      0x2             /* pages can be written */
  43 #define PROT_EXEC       0x4             /* pages can be executed */
  44
  45 #define PROT_NONE       0x0             /* pages cannot be accessed */
  46
  47 /* sharing types:  must choose either SHARED or PRIVATE */
  48 #define MAP_SHARED      1               /* share changes */
  49 #define MAP_PRIVATE     2               /* changes are private */
  50 #define MAP_TYPE        0xf             /* mask for share type */
  51
  52 /* other flags to mmap (or-ed in to MAP_SHARED or MAP_PRIVATE) */
  53 #define MAP_FIXED       0x10            /* user assigns address */
  54
  55 /* these flags not yet implemented */
  56 #define MAP_RENAME      0x20            /* rename private pages to file */
  57 #define MAP_NORESERVE   0x40            /* don't reserve needed swap area */
  58
  59 /*
  60  * For the sake of backward object compatibility, we use the _MAP_NEW flag.
  61  * This flag will be automatically or'ed in by the C library for all
  62  * new mmap calls.  Previous binaries with old mmap calls with continue
  63  * to get 0 or -1 for return values.  New mmap calls will get the mapped
  64  * address as the return value if successful and -1 on errors.  By default,
  65  * new mmap calls automatically have the kernel assign the map address
  66  * unless the MAP_FIXED flag is given.
  67  */
  68 #define _MAP_NEW        0x80000000      /* user's should not need to use this */
  69
  70 #if !defined(LOCORE) && !defined(KERNEL)
  71 #include <sys/types.h>
  72
  73 /*
  74  * Except for old binaries mmap() will return the resultant
  75  * address of mapping on success and (caddr_t)-1 on error.
  76  */
  77 extern caddr_t mmap();
  78 #endif  /* !LOCORE && !KERNEL */
  79
  80 /* advice to madvise */
  81 #define MADV_NORMAL     0               /* no further special treatment */
  82 #define MADV_RANDOM     1               /* expect random page references */
  83 #define MADV_SEQUENTIAL 2               /* expect sequential page references */
  84 #define MADV_WILLNEED   3               /* will need these pages */
  85 #define MADV_DONTNEED   4               /* don't need these pages */
  86
  87 /* flags to msync */
  88 #define MS_ASYNC        0x1             /* return immediately */
  89 #define MS_INVALIDATE   0x2             /* invalidate caches */
  90
  91 /* functions to mctl */
  92 #define MC_SYNC         1               /* sync with backing store */
  93 #define MC_LOCK         2               /* lock pages in memory */
  94 #define MC_UNLOCK       3               /* unlock pages from memory */
  95 #define MC_ADVISE       4               /* give advice to management */
  96 #define MC_LOCKAS       5               /* lock address space in memory */
  97 #define MC_UNLOCKAS     6               /* unlock address space from memory */
  98
  99 /* flags to mlockall */
 100 #define MCL_CURRENT     0x1             /* lock current mappings */
 101 #define MCL_FUTURE      0x2             /* lock future mappings */
 102
 103 #endif /* !_sys_mman_h */