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[thirdparty/glibc.git] / bits / mman.h

diff --git a/bits/mman.h b/bits/mman.h
index 99e3bcd1e870c56fa0de6268515b70bb9b3ed74c..189d3444d49a55ddc55fc8311379f238c5dcdf95 100644 (file)
--- a/bits/mman.h
+++ b/bits/mman.h
@@ -1,28 +1,28 @@
 /* Definitions for BSD-style memory management.
-   Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1994-2019 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 Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   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
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 /* These are the bits used by 4.4 BSD and its derivatives.  On systems
    (such as GNU) where these facilities are not system services but can be
    emulated in the C library, these are the definitions we emulate.  */
 
-#ifndef        _BITS_MMAN_H
-#define        _BITS_MMAN_H    1
+#ifndef _SYS_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
 
 /* Protections are chosen from these bits, OR'd together.  The
    implementation does not necessarily support PROT_EXEC or PROT_WRITE
@@ -37,17 +37,15 @@
 /* Flags contain mapping type, sharing type and options.  */
 
 /* Mapping type (must choose one and only one of these).  */
-#ifdef __USE_BSD
+#ifdef __USE_MISC
 # define MAP_FILE       0x0001 /* Mapped from a file or device.  */
 # define MAP_ANON       0x0002 /* Allocated from anonymous virtual memory.  */
 # define MAP_TYPE       0x000f /* Mask for type field.  */
-# ifdef __USE_MISC
-#  define MAP_ANONYMOUS  MAP_ANON /* Linux name. */
-# endif
+# define MAP_ANONYMOUS  MAP_ANON /* Linux name. */
 #endif
 
 /* Sharing types (must choose one and only one of these).  */
-#ifdef __USE_BSD
+#ifdef __USE_MISC
 # define MAP_COPY       0x0020 /* Virtual copy of region at mapping time.  */
 #endif
 #define        MAP_SHARED       0x0010 /* Share changes.  */
@@ -55,14 +53,14 @@
 
 /* Other flags.  */
 #define        MAP_FIXED        0x0100 /* Map address must be exactly as requested. */
-#ifdef __USE_BSD
+#ifdef __USE_MISC
 # define MAP_NOEXTEND   0x0200 /* For MAP_FILE, don't change file size.  */
 # define MAP_HASSEMPHORE 0x0400        /* Region may contain semaphores.  */
 # define MAP_INHERIT    0x0800 /* Region is retained after exec.  */
 #endif
 
 /* Advice to `madvise'.  */
-#ifdef __USE_BSD
+#ifdef __USE_MISC
 # define MADV_NORMAL    0      /* No further special treatment.  */
 # define MADV_RANDOM    1      /* Expect random page references.  */
 # define MADV_SEQUENTIAL 2     /* Expect sequential page references.  */
@@ -70,4 +68,27 @@
 # define MADV_DONTNEED  4      /* Don't need these pages.  */
 #endif
 
-#endif /* bits/mman.h */
+/* The POSIX people had to invent similar names for the same things.  */
+#ifdef __USE_XOPEN2K
+# define POSIX_MADV_NORMAL     0 /* No further special treatment.  */
+# define POSIX_MADV_RANDOM     1 /* Expect random page references.  */
+# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references.  */
+# define POSIX_MADV_WILLNEED   3 /* Will need these pages.  */
+# define POSIX_MADV_DONTNEED   4 /* Don't need these pages.  */
+#endif
+
+/* Flags to `msync'.  */
+#define MS_ASYNC       1               /* Sync memory asynchronously.  */
+#define MS_SYNC                0               /* Synchronous memory sync.  */
+#define MS_INVALIDATE  2               /* Invalidate the caches.  */
+
+/* Flags for `mremap'.  */
+#ifdef __USE_GNU
+# define MREMAP_MAYMOVE        1               /* Mapping address may change.  */
+# define MREMAP_FIXED  2               /* Fifth argument sets new address.  */
+#endif
+
+/* Flags for `mlockall' (can be OR'd together).  */
+#define MCL_CURRENT    1               /* Lock all currently mapped pages.  */
+#define MCL_FUTURE     2               /* Lock all additions to address
+                                          space.  */