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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 Collabora Ltd.
*/
#ifndef _SYSCALL_USER_DISPATCH_H
#define _SYSCALL_USER_DISPATCH_H
#include <linux/thread_info.h>
#include <linux/sched.h>
#include <linux/syscall_user_dispatch_types.h>
struct pt_regs;
#ifdef CONFIG_SYSCALL_USER_DISPATCH
bool syscall_user_dispatch(struct pt_regs *regs);
static __always_inline bool syscall_user_dispatch_clear_on_dispatch(void)
{
if (likely(!current->syscall_dispatch.on_dispatch))
return false;
current->syscall_dispatch.on_dispatch = false;
return true;
}
int set_syscall_user_dispatch(unsigned long mode, unsigned long offset,
unsigned long len, char __user *selector);
#define clear_syscall_work_syscall_user_dispatch(tsk) \
clear_task_syscall_work(tsk, SYSCALL_USER_DISPATCH)
int syscall_user_dispatch_get_config(struct task_struct *task, unsigned long size,
void __user *data);
int syscall_user_dispatch_set_config(struct task_struct *task, unsigned long size,
void __user *data);
#else
static __always_inline bool syscall_user_dispatch(struct pt_regs *regs)
{
return false;
}
static __always_inline bool syscall_user_dispatch_clear_on_dispatch(void)
{
return false;
}
static inline int set_syscall_user_dispatch(unsigned long mode, unsigned long offset,
unsigned long len, char __user *selector)
{
return -EINVAL;
}
static inline void clear_syscall_work_syscall_user_dispatch(struct task_struct *tsk)
{
}
static inline int syscall_user_dispatch_get_config(struct task_struct *task,
unsigned long size, void __user *data)
{
return -EINVAL;
}
static inline int syscall_user_dispatch_set_config(struct task_struct *task,
unsigned long size, void __user *data)
{
return -EINVAL;
}
#endif /* CONFIG_SYSCALL_USER_DISPATCH */
#endif /* _SYSCALL_USER_DISPATCH_H */
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