sysdeps/unix/sysv/linux/bits/mman-map-flags-generic.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

/* Definitions for POSIX memory map interface.  Linux/generic version.
   Copyright (C) 1997-2019 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 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, see
   <http://www.gnu.org/licenses/>.  */

#ifndef _SYS_MMAN_H
# error "Never use <bits/mman-map-flags-generic.h> directly; include <sys/mman.h> instead."
#endif

/* These definitions are appropriate for architectures that, in the
   Linux kernel, either have no uapi/asm/mman.h, or have one that
   includes asm-generic/mman.h without any changes to the values of
   the MAP_* flags defined in that header.  */

#ifdef __USE_MISC
# define MAP_GROWSDOWN	0x00100		/* Stack-like segment.  */
# define MAP_DENYWRITE	0x00800		/* ETXTBSY.  */
# define MAP_EXECUTABLE	0x01000		/* Mark it as an executable.  */
# define MAP_LOCKED	0x02000		/* Lock the mapping.  */
# define MAP_NORESERVE	0x04000		/* Don't check for reservations.  */
# define MAP_POPULATE	0x08000		/* Populate (prefault) pagetables.  */
# define MAP_NONBLOCK	0x10000		/* Do not block on IO.  */
# define MAP_STACK	0x20000		/* Allocation is for a stack.  */
# define MAP_HUGETLB	0x40000		/* Create huge page mapping.  */
# define MAP_SYNC	0x80000		/* Perform synchronous page
					   faults for the mapping.  */
# define MAP_FIXED_NOREPLACE 0x100000	/* MAP_FIXED but do not unmap
					   underlying mapping.  */
#endif