1 /* Definitions for POSIX memory map interface. Linux/generic 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-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 #ifdef __USE_MISC 29 # define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ 30 # define MAP_DENYWRITE 0x00800 /* ETXTBSY. */ 31 # define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ 32 # define MAP_LOCKED 0x02000 /* Lock the mapping. */ 33 # define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ 34 # define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ 35 # define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ 36 # define MAP_STACK 0x20000 /* Allocation is for a stack. */ 37 # define MAP_HUGETLB 0x40000 /* Create huge page mapping. */ 38 # define MAP_SYNC 0x80000 /* Perform synchronous page 39 faults for the mapping. */ 40 # define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap 41 underlying mapping. */ 42 #endif 43