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1446e1df GKB |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * Copyright (C) 2020 Collabora Ltd. | |
4 | */ | |
5 | #ifndef _SYSCALL_USER_DISPATCH_H | |
6 | #define _SYSCALL_USER_DISPATCH_H | |
7 | ||
8 | #include <linux/thread_info.h> | |
9 | ||
10 | #ifdef CONFIG_GENERIC_ENTRY | |
11 | ||
12 | struct syscall_user_dispatch { | |
13 | char __user *selector; | |
14 | unsigned long offset; | |
15 | unsigned long len; | |
16 | bool on_dispatch; | |
17 | }; | |
18 | ||
19 | int set_syscall_user_dispatch(unsigned long mode, unsigned long offset, | |
20 | unsigned long len, char __user *selector); | |
21 | ||
22 | #define clear_syscall_work_syscall_user_dispatch(tsk) \ | |
23 | clear_task_syscall_work(tsk, SYSCALL_USER_DISPATCH) | |
24 | ||
3f67987c GP |
25 | int syscall_user_dispatch_get_config(struct task_struct *task, unsigned long size, |
26 | void __user *data); | |
27 | ||
28 | int syscall_user_dispatch_set_config(struct task_struct *task, unsigned long size, | |
29 | void __user *data); | |
30 | ||
1446e1df GKB |
31 | #else |
32 | struct syscall_user_dispatch {}; | |
33 | ||
34 | static inline int set_syscall_user_dispatch(unsigned long mode, unsigned long offset, | |
35 | unsigned long len, char __user *selector) | |
36 | { | |
37 | return -EINVAL; | |
38 | } | |
39 | ||
40 | static inline void clear_syscall_work_syscall_user_dispatch(struct task_struct *tsk) | |
41 | { | |
42 | } | |
43 | ||
3f67987c GP |
44 | static inline int syscall_user_dispatch_get_config(struct task_struct *task, |
45 | unsigned long size, void __user *data) | |
46 | { | |
47 | return -EINVAL; | |
48 | } | |
49 | ||
50 | static inline int syscall_user_dispatch_set_config(struct task_struct *task, | |
51 | unsigned long size, void __user *data) | |
52 | { | |
53 | return -EINVAL; | |
54 | } | |
55 | ||
1446e1df GKB |
56 | #endif /* CONFIG_GENERIC_ENTRY */ |
57 | ||
58 | #endif /* _SYSCALL_USER_DISPATCH_H */ |