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 #else
26 struct syscall_user_dispatch {};
27
set_syscall_user_dispatch(unsigned long mode,unsigned long offset,unsigned long len,char __user * selector)28 static inline int set_syscall_user_dispatch(unsigned long mode, unsigned long offset,
29 unsigned long len, char __user *selector)
30 {
31 return -EINVAL;
32 }
33
clear_syscall_work_syscall_user_dispatch(struct task_struct * tsk)34 static inline void clear_syscall_work_syscall_user_dispatch(struct task_struct *tsk)
35 {
36 }
37
38 #endif /* CONFIG_GENERIC_ENTRY */
39
40 #endif /* _SYSCALL_USER_DISPATCH_H */
41