[mirror_ubuntu-eoan-kernel.git] / arch / mips / include / uapi / asm / mman.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1995, 1999, 2002 by Ralf Baechle
 */
#ifndef _ASM_MMAN_H
#define _ASM_MMAN_H

/*
 * Protections are chosen from these bits, OR'd together.  The
 * implementation does not necessarily support PROT_EXEC or PROT_WRITE
 * without PROT_READ.  The only guarantees are that no writing will be
 * allowed without PROT_WRITE and no access will be allowed for PROT_NONE.
 */
#define PROT_NONE	0x00		/* page can not be accessed */
#define PROT_READ	0x01		/* page can be read */
#define PROT_WRITE	0x02		/* page can be written */
#define PROT_EXEC	0x04		/* page can be executed */
/*			0x08		   reserved for PROT_EXEC_NOFLUSH */
#define PROT_SEM	0x10		/* page may be used for atomic ops */
#define PROT_GROWSDOWN	0x01000000	/* mprotect flag: extend change to start of growsdown vma */
#define PROT_GROWSUP	0x02000000	/* mprotect flag: extend change to end of growsup vma */

/*
 * Flags for mmap
 */
#define MAP_SHARED	0x001		/* Share changes */
#define MAP_PRIVATE	0x002		/* Changes are private */
#define MAP_TYPE	0x00f		/* Mask for type of mapping */
#define MAP_FIXED	0x010		/* Interpret addr exactly */

/* not used by linux, but here to make sure we don't clash with ABI defines */
#define MAP_RENAME	0x020		/* Assign page to file */
#define MAP_AUTOGROW	0x040		/* File may grow by writing */
#define MAP_LOCAL	0x080		/* Copy on fork/sproc */
#define MAP_AUTORSRV	0x100		/* Logical swap reserved on demand */

/* These are linux-specific */
#define MAP_NORESERVE	0x0400		/* don't check for reservations */
#define MAP_ANONYMOUS	0x0800		/* don't use a file */
#define MAP_GROWSDOWN	0x1000		/* stack-like segment */
#define MAP_DENYWRITE	0x2000		/* ETXTBSY */
#define MAP_EXECUTABLE	0x4000		/* mark it as an executable */
#define MAP_LOCKED	0x8000		/* pages are locked */
#define MAP_POPULATE	0x10000		/* populate (prefault) pagetables */
#define MAP_NONBLOCK	0x20000		/* do not block on IO */
#define MAP_STACK	0x40000		/* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB	0x80000		/* create a huge page mapping */

/*
 * Flags for msync
 */
#define MS_ASYNC	0x0001		/* sync memory asynchronously */
#define MS_INVALIDATE	0x0002		/* invalidate mappings & caches */
#define MS_SYNC		0x0004		/* synchronous memory sync */

/*
 * Flags for mlockall
 */
#define MCL_CURRENT	1		/* lock all current mappings */
#define MCL_FUTURE	2		/* lock all future mappings */
#define MCL_ONFAULT	4		/* lock all pages that are faulted in */

/*
 * Flags for mlock
 */
#define MLOCK_ONFAULT	0x01		/* Lock pages in range after they are faulted in, do not prefault */

#define MADV_NORMAL	0		/* no further special treatment */
#define MADV_RANDOM	1		/* expect random page references */
#define MADV_SEQUENTIAL 2		/* expect sequential page references */
#define MADV_WILLNEED	3		/* will need these pages */
#define MADV_DONTNEED	4		/* don't need these pages */

/* common parameters: try to keep these consistent across architectures */
#define MADV_FREE	8		/* free pages only if memory pressure */
#define MADV_REMOVE	9		/* remove these pages & resources */
#define MADV_DONTFORK	10		/* don't inherit across fork */
#define MADV_DOFORK	11		/* do inherit across fork */

#define MADV_MERGEABLE	 12		/* KSM may merge identical pages */
#define MADV_UNMERGEABLE 13		/* KSM may not merge identical pages */
#define MADV_HWPOISON	 100		/* poison a page for testing */

#define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
#define MADV_NOHUGEPAGE 15		/* Not worth backing with hugepages */

#define MADV_DONTDUMP	16		/* Explicity exclude from the core dump,
					   overrides the coredump filter bits */
#define MADV_DODUMP	17		/* Clear the MADV_NODUMP flag */

#define MADV_WIPEONFORK 18		/* Zero memory on fork, child only */
#define MADV_KEEPONFORK 19		/* Undo MADV_WIPEONFORK */

/* compatibility flags */
#define MAP_FILE	0

#define PKEY_DISABLE_ACCESS	0x1
#define PKEY_DISABLE_WRITE	0x2
#define PKEY_ACCESS_MASK	(PKEY_DISABLE_ACCESS |\
				 PKEY_DISABLE_WRITE)

#endif /* _ASM_MMAN_H */
Commit	Line	Data
e2be04c7	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
1da177e4 LT	2	/*
	3	* This file is subject to the terms and conditions of the GNU General Public
	4	* License. See the file "COPYING" in the main directory of this archive
	5	* for more details.
	6	*
	7	* Copyright (C) 1995, 1999, 2002 by Ralf Baechle
	8	*/
	9	#ifndef _ASM_MMAN_H
	10	#define _ASM_MMAN_H
	11
	12	/*
	13	* Protections are chosen from these bits, OR'd together. The
	14	* implementation does not necessarily support PROT_EXEC or PROT_WRITE
	15	* without PROT_READ. The only guarantees are that no writing will be
	16	* allowed without PROT_WRITE and no access will be allowed for PROT_NONE.
	17	*/
	18	#define PROT_NONE 0x00 /* page can not be accessed */
	19	#define PROT_READ 0x01 /* page can be read */
	20	#define PROT_WRITE 0x02 /* page can be written */
	21	#define PROT_EXEC 0x04 /* page can be executed */
	22	/* 0x08 reserved for PROT_EXEC_NOFLUSH */
	23	#define PROT_SEM 0x10 /* page may be used for atomic ops */
	24	#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
	25	#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
	26
	27	/*
	28	* Flags for mmap
	29	*/
	30	#define MAP_SHARED 0x001 /* Share changes */
	31	#define MAP_PRIVATE 0x002 /* Changes are private */
	32	#define MAP_TYPE 0x00f /* Mask for type of mapping */
	33	#define MAP_FIXED 0x010 /* Interpret addr exactly */
	34
	35	/* not used by linux, but here to make sure we don't clash with ABI defines */
	36	#define MAP_RENAME 0x020 /* Assign page to file */
	37	#define MAP_AUTOGROW 0x040 /* File may grow by writing */
	38	#define MAP_LOCAL 0x080 /* Copy on fork/sproc */
	39	#define MAP_AUTORSRV 0x100 /* Logical swap reserved on demand */
	40
	41	/* These are linux-specific */
	42	#define MAP_NORESERVE 0x0400 /* don't check for reservations */
	43	#define MAP_ANONYMOUS 0x0800 /* don't use a file */
	44	#define MAP_GROWSDOWN 0x1000 /* stack-like segment */
	45	#define MAP_DENYWRITE 0x2000 /* ETXTBSY */
	46	#define MAP_EXECUTABLE 0x4000 /* mark it as an executable */
	47	#define MAP_LOCKED 0x8000 /* pages are locked */
	48	#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
	49	#define MAP_NONBLOCK 0x20000 /* do not block on IO */
90f72aa5 AB	50	#define MAP_STACK 0x40000 /* give out an address that is best suited for process/thread stacks */
90f72aa5 AB	51	#define MAP_HUGETLB 0x80000 /* create a huge page mapping */
1da177e4 LT	52
	53	/*
	54	* Flags for msync
	55	*/
	56	#define MS_ASYNC 0x0001 /* sync memory asynchronously */
	57	#define MS_INVALIDATE 0x0002 /* invalidate mappings & caches */
	58	#define MS_SYNC 0x0004 /* synchronous memory sync */
	59
	60	/*
	61	* Flags for mlockall
	62	*/
	63	#define MCL_CURRENT 1 /* lock all current mappings */
	64	#define MCL_FUTURE 2 /* lock all future mappings */
b0f205c2 EM	65	#define MCL_ONFAULT 4 /* lock all pages that are faulted in */
	66
	67	/*
	68	* Flags for mlock
	69	*/
	70	#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
1da177e4	71
5f6164f3 MT	72	#define MADV_NORMAL 0 /* no further special treatment */
5f6164f3 MT	73	#define MADV_RANDOM 1 /* expect random page references */
70342287	74	#define MADV_SEQUENTIAL 2 /* expect sequential page references */
5f6164f3 MT	75	#define MADV_WILLNEED 3 /* will need these pages */
	76	#define MADV_DONTNEED 4 /* don't need these pages */
	77
	78	/* common parameters: try to keep these consistent across architectures */
21f55b01	79	#define MADV_FREE 8 /* free pages only if memory pressure */
5f6164f3 MT	80	#define MADV_REMOVE 9 /* remove these pages & resources */
	81	#define MADV_DONTFORK 10 /* don't inherit across fork */
	82	#define MADV_DOFORK 11 /* do inherit across fork */
1da177e4	83
70342287	84	#define MADV_MERGEABLE 12 /* KSM may merge identical pages */
d19f3524	85	#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
70342287	86	#define MADV_HWPOISON 100 /* poison a page for testing */
d19f3524	87
a826e422	88	#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
70342287	89	#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
a826e422	90
70342287	91	#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
accb61fe JB	92	overrides the coredump filter bits */
	93	#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */
	94
d2cd9ede RR	95	#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
	96	#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */
	97
1da177e4	98	/* compatibility flags */
5f6164f3	99	#define MAP_FILE 0
1da177e4	100
e8c24d3a DH	101	#define PKEY_DISABLE_ACCESS 0x1
	102	#define PKEY_DISABLE_WRITE 0x2
	103	#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS \|\
	104	PKEY_DISABLE_WRITE)
	105
1da177e4	106	#endif /* _ASM_MMAN_H */