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Annotation of Net2/sys/mman.h, revision 1.1.1.1

1.1       root        1: /*-
                      2:  * Copyright (c) 1982, 1986 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
                     33:  *     @(#)mman.h      7.5 (Berkeley) 6/27/91
                     34:  */
                     35: 
                     36: /*
                     37:  * Protections are chosen from these bits, or-ed together
                     38:  */
                     39: #define        PROT_READ       0x04    /* pages can be read */
                     40: #define        PROT_WRITE      0x02    /* pages can be written */
                     41: #define        PROT_EXEC       0x01    /* pages can be executed */
                     42: 
                     43: /*
                     44:  * Flags contain mapping type, sharing type and options.
                     45:  * Mapping type; choose one
                     46:  */
                     47: #define        MAP_FILE        0x0001  /* mapped from a file or device */
                     48: #define        MAP_ANON        0x0002  /* allocated from memory, swap space */
                     49: #define        MAP_TYPE        0x000f  /* mask for type field */
                     50: 
                     51: /*
                     52:  * Sharing types; choose one
                     53:  */
                     54: #define        MAP_COPY        0x0020  /* "copy" region at mmap time */
                     55: #define        MAP_SHARED      0x0010  /* share changes */
                     56: #define        MAP_PRIVATE     0x0000  /* changes are private */
                     57: 
                     58: /*
                     59:  * Other flags
                     60:  */
                     61: #define        MAP_FIXED       0x0100  /* map addr must be exactly as requested */
                     62: #define        MAP_NOEXTEND    0x0200  /* for MAP_FILE, don't change file size */
                     63: #define        MAP_HASSEMPHORE 0x0400  /* region may contain semaphores */
                     64: #define        MAP_INHERIT     0x0800  /* region is retained after exec */
                     65: 
                     66: /*
                     67:  * Advice to madvise
                     68:  */
                     69: #define        MADV_NORMAL     0       /* no further special treatment */
                     70: #define        MADV_RANDOM     1       /* expect random page references */
                     71: #define        MADV_SEQUENTIAL 2       /* expect sequential page references */
                     72: #define        MADV_WILLNEED   3       /* will need these pages */
                     73: #define        MADV_DONTNEED   4       /* dont need these pages */
                     74: 
                     75: #ifndef KERNEL
                     76: 
                     77: #include <sys/cdefs.h>
                     78: 
                     79: __BEGIN_DECLS
                     80: /* Some of these int's should probably be size_t's */
                     81: caddr_t        mmap __P((caddr_t, size_t, int, int, int, off_t));
                     82: int    mprotect __P((caddr_t, int, int));
                     83: int    munmap __P((caddr_t, int));
                     84: int    msync __P((caddr_t, int));
                     85: __END_DECLS
                     86: 
                     87: #endif /* !KERNEL */

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