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 | |
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 | |
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 | |
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 | |
56 | #endif /* CONFIG_GENERIC_ENTRY */ |
57 | |
58 | #endif /* _SYSCALL_USER_DISPATCH_H */ |
59 | |