1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2/*
 3 * Kernel support for NT synchronization primitive emulation
 4 *
 5 * Copyright (C) 2021-2022 Elizabeth Figura <zfigura@codeweavers.com>
 6 */
 7
 8#ifndef __LINUX_NTSYNC_H
 9#define __LINUX_NTSYNC_H
10
11#include <linux/types.h>
12
13struct ntsync_sem_args {
14	__u32 count;
15	__u32 max;
16};
17
18struct ntsync_mutex_args {
19	__u32 owner;
20	__u32 count;
21};
22
23struct ntsync_event_args {
24	__u32 manual;
25	__u32 signaled;
26};
27
28#define NTSYNC_WAIT_REALTIME	0x1
29
30struct ntsync_wait_args {
31	__u64 timeout;
32	__u64 objs;
33	__u32 count;
34	__u32 index;
35	__u32 flags;
36	__u32 owner;
37	__u32 alert;
38	__u32 pad;
39};
40
41#define NTSYNC_MAX_WAIT_COUNT 64
42
43#define NTSYNC_IOC_CREATE_SEM		_IOW ('N', 0x80, struct ntsync_sem_args)
44#define NTSYNC_IOC_WAIT_ANY		_IOWR('N', 0x82, struct ntsync_wait_args)
45#define NTSYNC_IOC_WAIT_ALL		_IOWR('N', 0x83, struct ntsync_wait_args)
46#define NTSYNC_IOC_CREATE_MUTEX		_IOW ('N', 0x84, struct ntsync_mutex_args)
47#define NTSYNC_IOC_CREATE_EVENT		_IOW ('N', 0x87, struct ntsync_event_args)
48
49#define NTSYNC_IOC_SEM_RELEASE		_IOWR('N', 0x81, __u32)
50#define NTSYNC_IOC_MUTEX_UNLOCK		_IOWR('N', 0x85, struct ntsync_mutex_args)
51#define NTSYNC_IOC_MUTEX_KILL		_IOW ('N', 0x86, __u32)
52#define NTSYNC_IOC_EVENT_SET		_IOR ('N', 0x88, __u32)
53#define NTSYNC_IOC_EVENT_RESET		_IOR ('N', 0x89, __u32)
54#define NTSYNC_IOC_EVENT_PULSE		_IOR ('N', 0x8a, __u32)
55#define NTSYNC_IOC_SEM_READ		_IOR ('N', 0x8b, struct ntsync_sem_args)
56#define NTSYNC_IOC_MUTEX_READ		_IOR ('N', 0x8c, struct ntsync_mutex_args)
57#define NTSYNC_IOC_EVENT_READ		_IOR ('N', 0x8d, struct ntsync_event_args)
58
59#endif