1 /* Definitions for POSIX memory map interface. Linux/PowerPC version. 2 Copyright (C) 1997-2022 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 #define PROT_SAO 0x10 /* Strong Access Ordering. */ 27 28 /* These are Linux-specific. */ 29 #ifdef __USE_MISC 30 # define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ 31 # define MAP_DENYWRITE 0x00800 /* ETXTBSY */ 32 # define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ 33 # define MAP_LOCKED 0x00080 /* Lock the mapping. */ 34 # define MAP_NORESERVE 0x00040 /* Don't check for reservations. */ 35 # define MAP_POPULATE 0x08000 /* 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 52 /* Include generic Linux declarations. */ 53 #include <bits/mman-linux.h> 54