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2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
69 lines
2.9 KiB
C
69 lines
2.9 KiB
C
/* Definitions for BSD-style memory management. SunOS 4 version.
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Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _BITS_MMAN_H
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#define _BITS_MMAN_H 1
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/* Protections are chosen from these bits, OR'd together. The
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implementation does not necessarily support PROT_EXEC or PROT_WRITE
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without PROT_READ. The only guarantees are that no writing will be
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allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */
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#define PROT_NONE 0x00 /* No access. */
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#define PROT_READ 0x01 /* Pages can be read. */
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#define PROT_WRITE 0x02 /* Pages can be written. */
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#define PROT_EXEC 0x04 /* Pages can be executed. */
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/* Sharing types (must choose one and only one of these). */
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#define MAP_SHARED 0x01 /* Share changes. */
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#define MAP_PRIVATE 0x02 /* Changes private; copy pages on write. */
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#ifdef __USE_BSD
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# define MAP_TYPE 0x0f /* Mask for sharing type. */
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#endif
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/* Other flags. */
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#define MAP_FIXED 0x10 /* Map address must be exactly as requested. */
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/* The following three flags are not actually implemented in SunOS 4.1. */
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#ifdef __USE_BSD
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# define MAP_RENAME 0x20 /* Rename private pages to file. */
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# define MAP_NORESERVE 0x40 /* Don't reserve needed swap area. */
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# define MAP_INHERIT 0x80 /* Region is retained after exec. */
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#endif
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/* This is an internal flag that is always set in `mmap' system calls. In
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older versions of SunOS 4 `mmap' did not return the actual mapping
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address, but always returned zero. This flag says to return the
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address; the `mmap' C library function always sets it. */
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#define _MAP_NEW 0x80000000
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/* Advice to `madvise'. */
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#ifdef __USE_BSD
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# define MADV_NORMAL 0 /* No further special treatment. */
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# define MADV_RANDOM 1 /* Expect random page references. */
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# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */
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# define MADV_WILLNEED 3 /* Will need these pages. */
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# define MADV_DONTNEED 4 /* Don't need these pages. */
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#endif
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/* Flags to `msync'. */
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#define MS_ASYNC 0x1 /* Return immediately, don't fsync. */
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#define MS_INVALIDATE 0x2 /* Invalidate caches. */
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#endif /* bits/mman.h */
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