1/* Definitions for POSIX memory map interface. Linux/generic version.
2 Copyright (C) 1997-2023 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-map-flags-generic.h> directly; include <sys/mman.h> instead."
21#endif
22
23/* These definitions are appropriate for architectures that, in the
24 Linux kernel, either have no uapi/asm/mman.h, or have one that
25 includes asm-generic/mman.h without any changes to the values of
26 the MAP_* flags defined in that header. */
27
28#define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */
29#define MAP_DENYWRITE 0x00800 /* ETXTBSY. */
30#define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */
31#define MAP_LOCKED 0x02000 /* Lock the mapping. */
32#define MAP_NORESERVE 0x04000 /* Don't check for reservations. */
33#define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */
34#define MAP_NONBLOCK 0x10000 /* Do not block on IO. */
35#define MAP_STACK 0x20000 /* Allocation is for a stack. */
36#define MAP_HUGETLB 0x40000 /* Create huge page mapping. */
37#define MAP_SYNC 0x80000 /* Perform synchronous page
38 faults for the mapping. */
39#define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap
40 underlying mapping. */
41