// 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 !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !zos && !windows && !solaris && !plan9

package term

import (
	"fmt"
	"runtime"
)

type state struct{}

func isTerminal(fd int) bool {
	return false
}

if($ARGV[0] eq "-plan9") {
	$plan9 = 1;
	shift;
}
if($ARGV[0] eq "-darwin") {
	$darwin = 1;
	$libc = 1;
	shift;
}
if($ARGV[0] eq "-openbsd") {
	$openbsd = 1;
	shift;
}
if($ARGV[0] eq "-netbsd") {
	$netbsd = 1;
	shift;
}
if($ARGV[0] eq "-dragonfly") {
	$dragonfly = 1;
	shift;
}
if($ARGV[0] eq "-arm") {
	$arm = 1;
	shift;
}
if($ARGV[0] eq "-libc") {
	$libc = 1;
	shift;
}

// Copyright 2009 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 (
	"runtime"
	"syscall"
	"time"
)

func setKeepAliveIdle(fd *netFD, d time.Duration) error {
	if d == 0 {
		d = defaultTCPKeepAliveIdle
	} else if d < 0 {
		return nil
	}

// Copyright 2011 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 dragonfly || netbsd || (openbsd && mips64)

package syscall

import (
	"runtime"
	"unsafe"
)

type SysProcAttr struct {
	Chroot     string      // Chroot.
	Credential *Credential // Credential.
	Ptrace     bool        // Enable tracing.

// Copyright 2024 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 || illumos || linux || netbsd || windows

package net

import "time"

var testConfigs = []KeepAliveConfig{
	{
		Enable:   true,
		Idle:     5 * time.Second,
		Interval: 3 * time.Second,
		Count:    10,
	},
	{

// 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

// A Message represents a routing message.
type Message interface {
	// Sys returns operating system-specific information.
	Sys() []Sys
}

// A Sys reprensents operating system-specific information.

// Copyright 2018 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 freebsd || netbsd

package unix

import (
	"strings"
	"unsafe"
)

// Derive extattr namespace and attribute name

func xattrnamespace(fullattr string) (ns int, attr string, err error) {
	s := strings.IndexByte(fullattr, '.')
	if s == -1 {

//
//	Darwin    unlimited
//	DragonFly   1000000 (vm.max_proc_mmap)
//	FreeBSD   unlimited
//	Linux         65530 (vm.max_map_count) // TODO: query /proc/sys/vm/max_map_count?
//	NetBSD    unlimited
//	OpenBSD   unlimited
var mmapLimit int32 = 1<<31 - 1

func init() {
	// Linux is the only practically concerning OS.
	if runtime.GOOS == "linux" {
		mmapLimit = 30000
	}
}

// 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

// An InterfaceMessage represents an interface message.
type InterfaceMessage struct {
	Version int    // message version
	Type    int    // message type
	Flags   int    // interface flags

// 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

package route

import (
	"runtime"
	"syscall"
)

func (m *RouteMessage) marshal() ([]byte, error) {
	w, ok := wireFormats[m.Type]
	if !ok {
		return nil, errUnsupportedMessage
	}
	l := w.bodyOff + addrsSpace(m.Addrs)