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 8.1 (Berkeley) 06/02/93 8 */ 9 10 /* 11 * Protections are chosen from these bits, or-ed together 12 */ 13 #define PROT_READ 0x01 /* pages can be read */ 14 #define PROT_WRITE 0x02 /* pages can be written */ 15 #define PROT_EXEC 0x04 /* pages can be executed */ 16 17 /* 18 * Flags contain sharing type and options. 19 * Sharing types; choose one. 20 */ 21 #define MAP_SHARED 0x0001 /* share changes */ 22 #define MAP_PRIVATE 0x0002 /* changes are private */ 23 #define MAP_COPY 0x0004 /* "copy" region at mmap time */ 24 25 /* 26 * Other flags 27 */ 28 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 29 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 30 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 31 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 32 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 33 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 34 35 /* 36 * Mapping type; default is map from file. 37 */ 38 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 39 40 /* 41 * Advice to madvise 42 */ 43 #define MADV_NORMAL 0 /* no further special treatment */ 44 #define MADV_RANDOM 1 /* expect random page references */ 45 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 46 #define MADV_WILLNEED 3 /* will need these pages */ 47 #define MADV_DONTNEED 4 /* dont need these pages */ 48 49 #ifndef KERNEL 50 51 #include <sys/cdefs.h> 52 53 __BEGIN_DECLS 54 /* Some of these int's should probably be size_t's */ 55 caddr_t mmap __P((caddr_t, size_t, int, int, int, off_t)); 56 int mprotect __P((caddr_t, size_t, int)); 57 int munmap __P((caddr_t, size_t)); 58 int msync __P((caddr_t, size_t)); 59 int mlock __P((caddr_t, size_t)); 60 int munlock __P((caddr_t, size_t)); 61 __END_DECLS 62 63 #endif /* !KERNEL */ 64