1 /* Definitions for POSIX memory map interface.  Linux/SPARC version.
2    Copyright (C) 1997-2021 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #ifndef _SYS_MMAN_H
20 # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
21 #endif
22 
23 /* The following definitions basically come from the kernel headers.
24    But the kernel header is not namespace clean.  */
25 
26 
27 /* These are Linux-specific.  */
28 #ifdef __USE_MISC
29 # define MAP_GROWSDOWN	0x0200		/* Stack-like segment.  */
30 # define MAP_DENYWRITE	0x0800		/* ETXTBSY */
31 # define MAP_EXECUTABLE	0x1000		/* Mark it as an executable.  */
32 # define MAP_LOCKED	0x0100		/* Lock the mapping.  */
33 # define MAP_NORESERVE	0x0040		/* Don't check for reservations.  */
34 # define _MAP_NEW	0x80000000	/* Binary compatibility with SunOS.  */
35 # define MAP_POPULATE	0x8000		/* Populate (prefault) pagetables.  */
36 # define MAP_NONBLOCK	0x10000		/* Do not block on IO.  */
37 # define MAP_STACK	0x20000		/* Allocation is for a stack.  */
38 # define MAP_HUGETLB	0x40000		/* Create huge page mapping.  */
39 # define MAP_SYNC	0x80000		/* Perform synchronous page
40 					   faults for the mapping.  */
41 # define MAP_FIXED_NOREPLACE 0x100000	/* MAP_FIXED but do not unmap
42 					   underlying mapping.  */
43 #endif
44 
45 /* Flags for `mlockall'.  */
46 #define MCL_CURRENT	0x2000		/* Lock all currently mapped pages.  */
47 #define MCL_FUTURE	0x4000		/* Lock all additions to address
48 					   space.  */
49 #define MCL_ONFAULT	0x8000		/* Lock all pages that are
50 					   faulted in.  */
51 /* Include generic Linux declarations.  */
52 #include <bits/mman-linux.h>
53 
54 /* Other flags.  */
55 #ifdef __USE_MISC
56 # define MAP_RENAME	MAP_ANONYMOUS
57 #endif
58