1 /* Access to user system call parameters and results
3 * See asm-generic/syscall.h for function descriptions.
5 * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
6 * Written by David Howells (dhowells@redhat.com)
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public Licence
10 * as published by the Free Software Foundation; either version
11 * 2 of the Licence, or (at your option) any later version.
14 #ifndef _ASM_SYSCALL_H
15 #define _ASM_SYSCALL_H
17 #include <linux/sched.h>
18 #include <linux/err.h>
20 extern const unsigned long sys_call_table[];
22 static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
27 static inline void syscall_rollback(struct task_struct *task,
30 regs->d0 = regs->orig_d0;
33 static inline long syscall_get_error(struct task_struct *task,
36 unsigned long error = regs->d0;
37 return IS_ERR_VALUE(error) ? error : 0;
40 static inline long syscall_get_return_value(struct task_struct *task,
46 static inline void syscall_set_return_value(struct task_struct *task,
50 regs->d0 = (long) error ?: val;
53 static inline void syscall_get_arguments(struct task_struct *task,
55 unsigned int i, unsigned int n,
85 static inline void syscall_set_arguments(struct task_struct *task,
87 unsigned int i, unsigned int n,
88 const unsigned long *args)
117 #endif /* _ASM_SYSCALL_H */