// 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,
	},
	{

// TestMMap ensures that we can actually mmap on every supported platform.
func TestMMap(t *testing.T) {
	switch runtime.GOOS {
	default:
		t.Skip("unsupported OS")
	case "aix", "darwin", "ios", "dragonfly", "freebsd", "linux", "netbsd", "openbsd", "windows":
	}
	dir := t.TempDir()
	filename := filepath.Join(dir, "foo.out")
	ob := NewOutBuf(nil)
	if err := ob.Open(filename); err != nil {
		t.Fatalf("error opening file: %v", err)
	}

// 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 darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris

package net

import (
	"bytes"
	"syscall"
	"testing"
	"time"
)

// Test that a client can't trigger an endless loop of write system

// 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 2013 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 || freebsd || linux || netbsd || openbsd

package runtime

import (
	"internal/abi"
	"internal/goarch"
	"unsafe"
)

func dumpregs(c *sigctxt) {
	print("eax    ", hex(c.eax()), "\n")
	print("ebx    ", hex(c.ebx()), "\n")

// 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 {

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

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

package user

import (
	"fmt"
	"strconv"
	"unsafe"
)

const maxGroups = 2048

func listGroups(u *User) ([]string, error) {
	ug, err := strconv.Atoi(u.Gid)

// 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)

//
//	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
	}
}