1 /*- 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)mman.h 8.2 (Berkeley) 01/09/95 8 */ 9 10 /* 11 * Protections are chosen from these bits, or-ed together 12 */ 13 #define PROT_NONE 0x00 /* no permissions */ 14 #define PROT_READ 0x01 /* pages can be read */ 15 #define PROT_WRITE 0x02 /* pages can be written */ 16 #define PROT_EXEC 0x04 /* pages can be executed */ 17 18 /* 19 * Flags contain sharing type and options. 20 * Sharing types; choose one. 21 */ 22 #define MAP_SHARED 0x0001 /* share changes */ 23 #define MAP_PRIVATE 0x0002 /* changes are private */ 24 #define MAP_COPY 0x0004 /* "copy" region at mmap time */ 25 26 /* 27 * Other flags 28 */ 29 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 30 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 31 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 32 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 33 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 34 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 35 36 /* 37 * Mapping type 38 */ 39 #define MAP_FILE 0x0000 /* map from file (default) */ 40 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 41 42 /* 43 * Advice to madvise 44 */ 45 #define MADV_NORMAL 0 /* no further special treatment */ 46 #define MADV_RANDOM 1 /* expect random page references */ 47 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 48 #define MADV_WILLNEED 3 /* will need these pages */ 49 #define MADV_DONTNEED 4 /* dont need these pages */ 50 51 #ifndef KERNEL 52 53 #include <sys/cdefs.h> 54 55 __BEGIN_DECLS 56 /* Some of these int's should probably be size_t's */ 57 caddr_t mmap __P((caddr_t, size_t, int, int, int, off_t)); 58 int mprotect __P((caddr_t, size_t, int)); 59 int munmap __P((caddr_t, size_t)); 60 int msync __P((caddr_t, size_t)); 61 int mlock __P((caddr_t, size_t)); 62 int munlock __P((caddr_t, size_t)); 63 int madvise __P((caddr_t, size_t, int)); 64 __END_DECLS 65 66 #endif /* !KERNEL */ 67