1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_PR_H
3 #define _UAPI_PR_H
4 
5 #include <linux/types.h>
6 
7 enum pr_type {
8 	PR_WRITE_EXCLUSIVE		= 1,
9 	PR_EXCLUSIVE_ACCESS		= 2,
10 	PR_WRITE_EXCLUSIVE_REG_ONLY	= 3,
11 	PR_EXCLUSIVE_ACCESS_REG_ONLY	= 4,
12 	PR_WRITE_EXCLUSIVE_ALL_REGS	= 5,
13 	PR_EXCLUSIVE_ACCESS_ALL_REGS	= 6,
14 };
15 
16 struct pr_reservation {
17 	__u64	key;
18 	__u32	type;
19 	__u32	flags;
20 };
21 
22 struct pr_registration {
23 	__u64	old_key;
24 	__u64	new_key;
25 	__u32	flags;
26 	__u32	__pad;
27 };
28 
29 struct pr_preempt {
30 	__u64	old_key;
31 	__u64	new_key;
32 	__u32	type;
33 	__u32	flags;
34 };
35 
36 struct pr_clear {
37 	__u64	key;
38 	__u32	flags;
39 	__u32	__pad;
40 };
41 
42 #define PR_FL_IGNORE_KEY	(1 << 0)	/* ignore existing key */
43 
44 #define IOC_PR_REGISTER		_IOW('p', 200, struct pr_registration)
45 #define IOC_PR_RESERVE		_IOW('p', 201, struct pr_reservation)
46 #define IOC_PR_RELEASE		_IOW('p', 202, struct pr_reservation)
47 #define IOC_PR_PREEMPT		_IOW('p', 203, struct pr_preempt)
48 #define IOC_PR_PREEMPT_ABORT	_IOW('p', 204, struct pr_preempt)
49 #define IOC_PR_CLEAR		_IOW('p', 205, struct pr_clear)
50 
51 #endif /* _UAPI_PR_H */
52