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File mman-common.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __ASM_GENERIC_MMAN_COMMON_H
#define __ASM_GENERIC_MMAN_COMMON_H

/*
 Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd.
 Based on: asm-xxx/mman.h
*/

#define PROT_READ	0x1		/* page can be read */
#define PROT_WRITE	0x2		/* page can be written */
#define PROT_EXEC	0x4		/* page can be executed */
#define PROT_SEM	0x8		/* page may be used for atomic ops */
#define PROT_NONE	0x0		/* page can not be accessed */
#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 */

#define MAP_SHARED	0x01		/* Share changes */
#define MAP_PRIVATE	0x02		/* Changes are private */
#define MAP_SHARED_VALIDATE 0x03	/* share + validate extension flags */
#define MAP_TYPE	0x0f		/* Mask for type of mapping */
#define MAP_FIXED	0x10		/* Interpret addr exactly */
#define MAP_ANONYMOUS	0x20		/* don't use a file */

/* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */
#define MAP_POPULATE		0x008000	/* populate (prefault) pagetables */
#define MAP_NONBLOCK		0x010000	/* do not block on IO */
#define MAP_STACK		0x020000	/* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB		0x040000	/* create a huge page mapping */
#define MAP_SYNC		0x080000 /* perform synchronous page faults for the mapping */
#define MAP_FIXED_NOREPLACE	0x100000	/* MAP_FIXED which doesn't unmap underlying mapping */

#define MAP_UNINITIALIZED 0x4000000	/* For anonymous mmap, memory could be
					 * uninitialized */

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

#define MS_ASYNC	1		/* sync memory asynchronously */
#define MS_INVALIDATE	2		/* invalidate the caches */
#define MS_SYNC		4		/* synchronous memory sync */

#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_HWPOISON	100		/* poison a page for testing */
#define MADV_SOFT_OFFLINE 101		/* soft offline page for testing */

#define MADV_MERGEABLE   12		/* KSM may merge identical pages */
#define MADV_UNMERGEABLE 13		/* KSM may not merge identical pages */

#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_DONTDUMP flag */

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

#define MADV_COLD	20		/* deactivate these pages */
#define MADV_PAGEOUT	21		/* reclaim these pages */

/* 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_GENERIC_MMAN_COMMON_H */

Name	Type	Size	Permission	Last Modified	Actions
.	DIR	-	drwxr-xr-x	2025-10-28 10:57:27
..	DIR	-	drwxr-xr-x	2025-10-28 10:57:27
auxvec.h	text/plain	218 B	-rw-r--r--	2025-10-27 03:42:50
bitsperlong.h	text/plain	564 B	-rw-r--r--	2025-10-27 03:42:51
bpf_perf_event.h	text/x-c	238 B	-rw-r--r--	2025-10-27 03:42:50
errno-base.h	text/plain	1.57 KB	-rw-r--r--	2025-10-27 03:42:51
errno.h	text/x-c	5.52 KB	-rw-r--r--	2025-10-27 03:42:50
fcntl.h	text/x-c	5.3 KB	-rw-r--r--	2025-10-27 03:42:50
hugetlb_encode.h	text/plain	1.76 KB	-rw-r--r--	2025-10-27 03:42:51
int-l64.h	text/x-c	718 B	-rw-r--r--	2025-10-27 03:42:51
int-ll64.h	text/x-c	864 B	-rw-r--r--	2025-10-27 03:42:50
ioctl.h	text/plain	3.4 KB	-rw-r--r--	2025-10-27 03:42:51
ioctls.h	text/x-c	3.89 KB	-rw-r--r--	2025-10-27 03:42:51
ipcbuf.h	text/x-c	1003 B	-rw-r--r--	2025-10-27 03:42:50
kvm_para.h	text/plain	96 B	-rw-r--r--	2025-10-27 03:42:50
mman-common.h	text/plain	3.46 KB	-rw-r--r--	2025-10-27 03:42:50
mman.h	text/x-c	740 B	-rw-r--r--	2025-10-27 03:42:50
msgbuf.h	text/x-c	1.58 KB	-rw-r--r--	2025-10-27 03:42:50
param.h	text/plain	353 B	-rw-r--r--	2025-10-27 03:42:50
poll.h	text/x-c	878 B	-rw-r--r--	2025-10-27 03:42:50
posix_types.h	text/x-c	2.32 KB	-rw-r--r--	2025-10-27 03:42:50
resource.h	text/plain	1.83 KB	-rw-r--r--	2025-10-27 03:42:50
sembuf.h	text/x-c	1.51 KB	-rw-r--r--	2025-10-27 03:42:50
setup.h	text/plain	190 B	-rw-r--r--	2025-10-27 03:42:51
shmbuf.h	text/x-c	1.79 KB	-rw-r--r--	2025-10-27 03:42:51
shmparam.h	text/plain	231 B	-rw-r--r--	2025-10-27 03:42:51
siginfo.h	text/x-c	12.21 KB	-rw-r--r--	2025-10-27 03:42:50
signal-defs.h	text/plain	800 B	-rw-r--r--	2025-10-27 03:42:51
signal.h	text/x-c	2.65 KB	-rw-r--r--	2025-10-27 03:42:50
socket.h	text/x-c	2.42 KB	-rw-r--r--	2025-10-27 03:42:50
sockios.h	text/plain	439 B	-rw-r--r--	2025-10-27 03:42:50
stat.h	text/x-c	2.57 KB	-rw-r--r--	2025-10-27 03:42:51
statfs.h	text/x-c	1.8 KB	-rw-r--r--	2025-10-27 03:42:50
swab.h	text/x-c	502 B	-rw-r--r--	2025-10-27 03:42:50
termbits.h	text/x-c	4.61 KB	-rw-r--r--	2025-10-27 03:42:50
termios.h	text/x-c	1.34 KB	-rw-r--r--	2025-10-27 03:42:50
types.h	text/x-c	233 B	-rw-r--r--	2025-10-27 03:42:51
ucontext.h	text/x-c	357 B	-rw-r--r--	2025-10-27 03:42:50
unistd.h	text/x-c	27.52 KB	-rw-r--r--	2025-10-27 03:42:51

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