// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build darwin || dragonfly || freebsd || (linux && !arm64 && !loong64 && !riscv64) || netbsd || openbsd

package main

import "syscall"

func dup2(oldfd, newfd int) error {
	return syscall.Dup2(oldfd, newfd)

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !(cgo && (aix || dragonfly || freebsd || (linux && !android) || netbsd || openbsd)) && !darwin

package testpty

import "os"

func open() (pty *os.File, processTTY string, err error) {
	return nil, "", ErrNotSupported

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build openbsd || netbsd

package rand

import "internal/syscall/unix"

func init() {
	// getentropy(2) returns a maximum of 256 bytes per call.
	altGetRandom = batched(unix.GetEntropy, 256)

	"runtime"
	"syscall"
)

// Adds MaxRSS to platforms that are supported.
func addMaxRSS(w io.Writer) {
	var rssToBytes uintptr
	switch runtime.GOOS {
	case "aix", "android", "dragonfly", "freebsd", "linux", "netbsd", "openbsd":
		rssToBytes = 1024
	case "darwin", "ios":
		rssToBytes = 1
	case "illumos", "solaris":
		rssToBytes = uintptr(syscall.Getpagesize())
	default:
		panic("unsupported OS")
	}

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd

package syscall_test

import (
	"internal/testenv"
	"os"
	"os/exec"
	"syscall"
	"testing"
)

func TestExecPtrace(t *testing.T) {
	testenv.MustHaveExec(t)

	bin, err := exec.LookPath("sh")

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos

// For Unix, get the pagesize from the runtime.

package unix

import "syscall"

func Getpagesize() int {
	return syscall.Getpagesize()

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build darwin || dragonfly || freebsd || netbsd || openbsd

package route

import _ "unsafe" // for linkname

//go:linkname sysctl syscall.sysctl

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build aix || dragonfly || freebsd || illumos || linux || netbsd

package net

import (
	"syscall"
	"testing"
)

const (
	syscall_TCP_KEEPIDLE  = syscall.TCP_KEEPIDLE
	syscall_TCP_KEEPCNT   = syscall.TCP_KEEPCNT
	syscall_TCP_KEEPINTVL = syscall.TCP_KEEPINTVL
)

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build aix || dragonfly || freebsd || linux || netbsd || solaris

package cgosotest

/*
extern int __thread tlsvar;
int *getTLS() { return &tlsvar; }
*/
import "C"

func init() {
	if v := *C.getTLS(); v != 12345 {
		println("got", v)
		panic("BAD TLS value")
	}

// errorcheck -0 -race

//go:build (linux && amd64) || (linux && ppc64le) || (darwin && amd64) || (freebsd && amd64) || (netbsd && amd64) || (windows && amd64)

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Issue 13265: nil pointer deref.

package p

func f() {
    var c chan chan chan int
    for ; ; <-<-<-c {
    }