diff options
Diffstat (limited to 'sysdeps/unix/bsd/sun/sunos4/bits/mman.h')
| -rw-r--r-- | sysdeps/unix/bsd/sun/sunos4/bits/mman.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/sysdeps/unix/bsd/sun/sunos4/bits/mman.h b/sysdeps/unix/bsd/sun/sunos4/bits/mman.h new file mode 100644 index 0000000000..fdef46522a --- /dev/null +++ b/sysdeps/unix/bsd/sun/sunos4/bits/mman.h @@ -0,0 +1,68 @@ +/* Definitions for BSD-style memory management. SunOS 4 version. + Copyright (C) 1994, 1995, 1996, 1997, 1998 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _BITS_MMAN_H +#define _BITS_MMAN_H 1 + +/* Protections are chosen from these bits, OR'd together. The + implementation does not necessarily support PROT_EXEC or PROT_WRITE + without PROT_READ. The only guarantees are that no writing will be + allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ + +#define PROT_NONE 0x00 /* No access. */ +#define PROT_READ 0x01 /* Pages can be read. */ +#define PROT_WRITE 0x02 /* Pages can be written. */ +#define PROT_EXEC 0x04 /* Pages can be executed. */ + +/* 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. */ +#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. */ +/* The following three flags are not actually implemented in SunOS 4.1. */ +#ifdef __USE_BSD +# define MAP_RENAME 0x20 /* Rename private pages to file. */ +# define MAP_NORESERVE 0x40 /* Don't reserve needed swap area. */ +# define MAP_INHERIT 0x80 /* Region is retained after exec. */ +#endif + +/* This is an internal flag that is always set in `mmap' system calls. In + older versions of SunOS 4 `mmap' did not return the actual mapping + address, but always returned zero. This flag says to return the + address; the `mmap' C library function always sets it. */ +#define _MAP_NEW 0x80000000 + +/* Advice to `madvise'. */ +#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 + +/* Flags to `msync'. */ +#define MS_ASYNC 0x1 /* Return immediately, don't fsync. */ +#define MS_INVALIDATE 0x2 /* Invalidate caches. */ + +#endif /* bits/mman.h */ |