[glibc.git] / sysdeps / unix / sysv / linux / bits / mman-map-flags-generic.h

/* Definitions for POSIX memory map interface.  Linux/generic version.
   Copyright (C) 1997-2024 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
   <https://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.  */

#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.  */
Commit	Line	Data
61d8b5fe	1	/* Definitions for POSIX memory map interface. Linux/generic version.
dff8da6b	2	Copyright (C) 1997-2024 Free Software Foundation, Inc.
61d8b5fe JM	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
5a82c748	17	<https://www.gnu.org/licenses/>. */
61d8b5fe JM	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
954b8f38 AS	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
61d8b5fe	38	faults for the mapping. */
954b8f38	39	#define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap
61d8b5fe	40	underlying mapping. */