Viewing file: syscall-generic.h (1.93 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
/* 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 <[email protected]> */
#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 = ®s->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); }
static inline void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, const unsigned long *args) { struct uml_pt_regs *r = ®s->regs;
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) = *args; }
/* See arch/x86/um/asm/syscall.h for syscall_get_arch() definition. */
#endif /* __UM_SYSCALL_GENERIC_H */
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