diff options
Diffstat (limited to 'sysdeps/unix/bsd/ultrix4/sys/mman.h')
| -rw-r--r-- | sysdeps/unix/bsd/ultrix4/sys/mman.h | 45 |
1 files changed, 26 insertions, 19 deletions
diff --git a/sysdeps/unix/bsd/ultrix4/sys/mman.h b/sysdeps/unix/bsd/ultrix4/sys/mman.h index 989bf21754..4262fce438 100644 --- a/sysdeps/unix/bsd/ultrix4/sys/mman.h +++ b/sysdeps/unix/bsd/ultrix4/sys/mman.h @@ -1,5 +1,5 @@ /* Definitions for BSD-style memory management. Ultrix 4 version. - Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc. + Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -41,20 +41,25 @@ /* Sharing types (must choose one and only one of these). */ #define MAP_SHARED 0x01 /* Share changes. */ #define MAP_PRIVATE 0x02 /* Changes private; copy pages on write. */ -#define MAP_TYPE 0x0f /* Mask for sharing type. */ +#ifdef __USE_BSD +# define MAP_TYPE 0x0f /* Mask for sharing type. */ +#endif /* Other flags. */ #define MAP_FIXED 0x10 /* Map address must be exactly as requested. */ /* Advice to `madvise'. */ -#define MADV_NORMAL 0 /* No further special treatment. */ -#define MADV_RANDOM 1 /* Expect random page references. */ -#define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ -#define MADV_WILLNEED 3 /* Will need these pages. */ -#define MADV_DONTNEED 4 /* Don't need these pages. */ +#ifdef __USE_BSD +# define MADV_NORMAL 0 /* No further special treatment. */ +# define MADV_RANDOM 1 /* Expect random page references. */ +# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +# define MADV_WILLNEED 3 /* Will need these pages. */ +# define MADV_DONTNEED 4 /* Don't need these pages. */ +#endif +/* Return value of `mmap' in case of an error. */ +#define MAP_FAILED ((__caddr_t) -1) -#include <sys/cdefs.h> __BEGIN_DECLS /* Map addresses starting near ADDR and extending for LEN bytes. from @@ -62,36 +67,38 @@ __BEGIN_DECLS is nonzero, it is the desired mapping address. If the MAP_FIXED bit is set in FLAGS, the mapping will be at ADDR exactly (which must be page-aligned); otherwise the system chooses a convenient nearby address. - The return value is the actual mapping address chosen or (caddr_t) -1 + The return value is the actual mapping address chosen or MAP_FAILED for errors (in which case `errno' is set). A successful `mmap' call deallocates any previous mapping for the affected region. */ -__caddr_t __mmap __P ((__caddr_t __addr, size_t __len, - int __prot, int __flags, int __fd, off_t __offset)); -__caddr_t mmap __P ((__caddr_t __addr, size_t __len, - int __prot, int __flags, int __fd, off_t __offset)); +extern __caddr_t __mmap __P ((__caddr_t __addr, size_t __len, int __prot, + int __flags, int __fd, off_t __offset)); +extern __caddr_t mmap __P ((__caddr_t __addr, size_t __len, int __prot, + int __flags, int __fd, off_t __offset)); /* Deallocate any mapping for the region starting at ADDR and extending LEN bytes. Returns 0 if successful, -1 for errors (and sets errno). */ -int __munmap __P ((__caddr_t __addr, size_t __len)); -int munmap __P ((__caddr_t __addr, size_t __len)); +extern int __munmap __P ((__caddr_t __addr, size_t __len)); +extern int munmap __P ((__caddr_t __addr, size_t __len)); /* Change the memory protection of the region starting at ADDR and extending LEN bytes to PROT. Returns 0 if successful, -1 for errors (and sets errno). */ -int __mprotect __P ((__caddr_t __addr, size_t __len, int __prot)); -int mprotect __P ((__caddr_t __addr, size_t __len, int __prot)); +extern int __mprotect __P ((__caddr_t __addr, size_t __len, int __prot)); +extern int mprotect __P ((__caddr_t __addr, size_t __len, int __prot)); /* Ultrix 4 does not implement `msync' or `madvise'. */ /* Synchronize the region starting at ADDR and extending LEN bytes with the file it maps. Filesystem operations on a file being mapped are unpredictable before this is done. */ -int msync __P ((caddr_t __addr, size_t __len)); +extern int msync __P ((caddr_t __addr, size_t __len)); +#ifdef __USE_BSD /* Advise the system about particular usage patterns the program follows for the region starting at ADDR and extending LEN bytes. */ -int madvise __P ((__caddr_t __addr, size_t __len, int __advice)); +extern int madvise __P ((__caddr_t __addr, size_t __len, int __advice)); +#endif __END_DECLS |