include/linux/syscall_user_dispatch.h

   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
  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
  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 */