name : syscall-generic.h /* SPDX-License-Identifier: GPL-2.0-only */ /* * Access to user system call parameters and results * * See asm-generic/syscall.h for function descriptions. * * Copyright (C) 2015 Mickaël Salaün <mic@digikod.net> */ #ifndef __UM_SYSCALL_GENERIC_H #define __UM_SYSCALL_GENERIC_H #include <asm/ptrace.h> #include <linux/err.h> #include <linux/sched.h> #include <sysdep/ptrace.h> static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { return PT_REGS_SYSCALL_NR(regs); } static inline void syscall_rollback(struct task_struct *task, struct pt_regs *regs) { /* do nothing */ } static inline long syscall_get_error(struct task_struct *task, struct pt_regs *regs) { const long error = regs_return_value(regs); return IS_ERR_VALUE(error) ? error : 0; } static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { return regs_return_value(regs); } static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { PT_REGS_SET_SYSCALL_RETURN(regs, (long) error ?: val); } static inline void syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, unsigned long *args) { const struct uml_pt_regs *r = &regs->regs; *args++ = UPT_SYSCALL_ARG1(r); *args++ = UPT_SYSCALL_ARG2(r); *args++ = UPT_SYSCALL_ARG3(r); *args++ = UPT_SYSCALL_ARG4(r); *args++ = UPT_SYSCALL_ARG5(r); *args = UPT_SYSCALL_ARG6(r); } /* See arch/x86/um/asm/syscall.h for syscall_get_arch() definition. */ #endif /* __UM_SYSCALL_GENERIC_H */