| 1 | /* Definitions for POSIX memory map interface. Linux/generic version. |
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| 2 | Copyright (C) 1997-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library. If not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #ifndef _SYS_MMAN_H |
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| 20 | # error "Never use <bits/mman-map-flags-generic.h> directly; include <sys/mman.h> instead." |
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| 21 | #endif |
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| 22 | |
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| 23 | /* These definitions are appropriate for architectures that, in the |
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| 24 | Linux kernel, either have no uapi/asm/mman.h, or have one that |
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| 25 | includes asm-generic/mman.h without any changes to the values of |
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| 26 | the MAP_* flags defined in that header. */ |
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| 27 | |
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| 28 | #ifdef __USE_MISC |
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| 29 | # define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ |
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| 30 | # define MAP_DENYWRITE 0x00800 /* ETXTBSY. */ |
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| 31 | # define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ |
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| 32 | # define MAP_LOCKED 0x02000 /* Lock the mapping. */ |
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| 33 | # define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ |
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| 34 | # define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ |
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| 35 | # define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ |
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| 36 | # define MAP_STACK 0x20000 /* Allocation is for a stack. */ |
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| 37 | # define MAP_HUGETLB 0x40000 /* Create huge page mapping. */ |
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| 38 | # define MAP_SYNC 0x80000 /* Perform synchronous page |
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| 39 | faults for the mapping. */ |
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| 40 | # define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap |
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| 41 | underlying mapping. */ |
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| 42 | #endif |
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| 43 | |
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