Merge pull request #962 from erikwilson/bump-containerd

go.mod

@@ -7,7 +7,7 @@ replace (
 	github.com/containerd/btrfs => github.com/containerd/btrfs v0.0.0-20181101203652-af5082808c83
 	github.com/containerd/cgroups => github.com/containerd/cgroups v0.0.0-20190717030353-c4b9ac5c7601
 	github.com/containerd/console => github.com/containerd/console v0.0.0-20181022165439-0650fd9eeb50
-	github.com/containerd/containerd => github.com/rancher/containerd v1.3.0-k3s.2
+	github.com/containerd/containerd => github.com/rancher/containerd v1.3.0-k3s.4
 	github.com/containerd/continuity => github.com/containerd/continuity v0.0.0-20190815185530-f2a389ac0a02
 	github.com/containerd/fifo => github.com/containerd/fifo v0.0.0-20190816180239-bda0ff6ed73c
 	github.com/containerd/go-runc => github.com/containerd/go-runc v0.0.0-20190911050354-e029b79d8cda

go.sum

@@ -559,8 +559,8 @@ github.com/quasilyte/go-consistent v0.0.0-20190521200055-c6f3937de18c/go.mod h1:
 github.com/quobyte/api v0.1.2/go.mod h1:jL7lIHrmqQ7yh05OJ+eEEdHr0u/kmT1Ff9iHd+4H6VI=
 github.com/rakelkar/gonetsh v0.0.0-20190719023240-501daadcadf8 h1:83l9gPhYtgxODlZKU0Odq4pQuDcMZEVgAh364+PV3OU=
 github.com/rakelkar/gonetsh v0.0.0-20190719023240-501daadcadf8/go.mod h1:4XHkfaUj+URzGO9sohoAgt2V9Y8nIW7fugpu0E6gShk=
-github.com/rancher/containerd v1.3.0-k3s.2 h1:l3hHJRVNreflDuePWkJiONdSylPqNnNoqBkerqWUcFQ=
-github.com/rancher/containerd v1.3.0-k3s.2/go.mod h1:ZMfzmqce2Z+QSEqdHMfeJs1TZ/UeJ1aDrazjpQT4ehM=
+github.com/rancher/containerd v1.3.0-k3s.4 h1:Vq9EJQEm01eeWaBtgU35KxWeuVU5LwW43EmDIEnqpDQ=
+github.com/rancher/containerd v1.3.0-k3s.4/go.mod h1:ZMfzmqce2Z+QSEqdHMfeJs1TZ/UeJ1aDrazjpQT4ehM=
 github.com/rancher/cri-tools v1.16.1-k3s.1 h1:iporgQ46noE6dtLzq6fWcIO2qjyPZy2m42d2P+UnGJg=
 github.com/rancher/cri-tools v1.16.1-k3s.1/go.mod h1:TEKhKv2EJIZp+p9jnEy4C63g8CosJzsI4kyKKkHag+8=
 github.com/rancher/dynamiclistener v0.1.1-0.20191010011134-8a2488bc860a h1:1bUYAv5U/Ky4YJ9o8gWxX+vNcjpIL3JWNBao70OlkFE=
@@ -882,6 +882,7 @@ gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/mcuadros/go-syslog.v2 v2.2.1/go.mod h1:l5LPIyOOyIdQquNg+oU6Z3524YwrcqEm0aKH+5zpt2U=
+gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce h1:xcEWjVhvbDy+nHP67nPDDpbYrY+ILlfndk4bRioVHaU=
 gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 h1:VpOs+IwYnYBaFnrNAeB8UUWtL3vEUnzSCL1nVjPhqrw=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=

vendor/github.com/Microsoft/go-winio/pkg/etw/mksyscall_windows.go

+// 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.
+
+// +build ignore
+
+/*
+mksyscall_windows generates windows system call bodies
+
+It parses all files specified on command line containing function
+prototypes (like syscall_windows.go) and prints system call bodies
+to standard output.
+
+The prototypes are marked by lines beginning with "//sys" and read
+like func declarations if //sys is replaced by func, but:
+
+* The parameter lists must give a name for each argument. This
+  includes return parameters.
+
+* The parameter lists must give a type for each argument:
+  the (x, y, z int) shorthand is not allowed.
+
+* If the return parameter is an error number, it must be named err.
+
+* If go func name needs to be different from its winapi dll name,
+  the winapi name could be specified at the end, after "=" sign, like
+  //sys LoadLibrary(libname string) (handle uint32, err error) = LoadLibraryA
+
+* Each function that returns err needs to supply a condition, that
+  return value of winapi will be tested against to detect failure.
+  This would set err to windows "last-error", otherwise it will be nil.
+  The value can be provided at end of //sys declaration, like
+  //sys LoadLibrary(libname string) (handle uint32, err error) [failretval==-1] = LoadLibraryA
+  and is [failretval==0] by default.
+
+Usage:
+	mksyscall_windows [flags] [path ...]
+
+The flags are:
+	-output
+		Specify output file name (outputs to console if blank).
+	-trace
+		Generate print statement after every syscall.
+*/
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"flag"
+	"fmt"
+	"go/format"
+	"go/parser"
+	"go/token"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sort"
+	"strconv"
+	"strings"
+	"text/template"
+)
+
+var (
+	filename       = flag.String("output", "", "output file name (standard output if omitted)")
+	printTraceFlag = flag.Bool("trace", false, "generate print statement after every syscall")
+	systemDLL      = flag.Bool("systemdll", true, "whether all DLLs should be loaded from the Windows system directory")
+)
+
+func trim(s string) string {
+	return strings.Trim(s, " \t")
+}
+
+var packageName string
+
+func packagename() string {
+	return packageName
+}
+
+func syscalldot() string {
+	if packageName == "syscall" {
+		return ""
+	}
+	return "syscall."
+}
+
+// Param is function parameter
+type Param struct {
+	Name      string
+	Type      string
+	fn        *Fn
+	tmpVarIdx int
+}
+
+// tmpVar returns temp variable name that will be used to represent p during syscall.
+func (p *Param) tmpVar() string {
+	if p.tmpVarIdx < 0 {
+		p.tmpVarIdx = p.fn.curTmpVarIdx
+		p.fn.curTmpVarIdx++
+	}
+	return fmt.Sprintf("_p%d", p.tmpVarIdx)
+}
+
+// BoolTmpVarCode returns source code for bool temp variable.
+func (p *Param) BoolTmpVarCode() string {
+	const code = `var %s uint32
+	if %s {
+		%s = 1
+	} else {
+		%s = 0
+	}`
+	tmp := p.tmpVar()
+	return fmt.Sprintf(code, tmp, p.Name, tmp, tmp)
+}
+
+// SliceTmpVarCode returns source code for slice temp variable.
+func (p *Param) SliceTmpVarCode() string {
+	const code = `var %s *%s
+	if len(%s) > 0 {
+		%s = &%s[0]
+	}`
+	tmp := p.tmpVar()
+	return fmt.Sprintf(code, tmp, p.Type[2:], p.Name, tmp, p.Name)
+}
+
+// StringTmpVarCode returns source code for string temp variable.
+func (p *Param) StringTmpVarCode() string {
+	errvar := p.fn.Rets.ErrorVarName()
+	if errvar == "" {
+		errvar = "_"
+	}
+	tmp := p.tmpVar()
+	const code = `var %s %s
+	%s, %s = %s(%s)`
+	s := fmt.Sprintf(code, tmp, p.fn.StrconvType(), tmp, errvar, p.fn.StrconvFunc(), p.Name)
+	if errvar == "-" {
+		return s
+	}
+	const morecode = `
+	if %s != nil {
+		return
+	}`
+	return s + fmt.Sprintf(morecode, errvar)
+}
+
+// TmpVarCode returns source code for temp variable.
+func (p *Param) TmpVarCode() string {
+	switch {
+	case p.Type == "bool":
+		return p.BoolTmpVarCode()
+	case strings.HasPrefix(p.Type, "[]"):
+		return p.SliceTmpVarCode()
+	default:
+		return ""
+	}
+}
+
+// TmpVarHelperCode returns source code for helper's temp variable.
+func (p *Param) TmpVarHelperCode() string {
+	if p.Type != "string" {
+		return ""
+	}
+	return p.StringTmpVarCode()
+}
+
+// SyscallArgList returns source code fragments representing p parameter
+// in syscall. Slices are translated into 2 syscall parameters: pointer to
+// the first element and length.
+func (p *Param) SyscallArgList() []string {
+	t := p.HelperType()
+	var s string
+	switch {
+	case t[0] == '*':
+		s = fmt.Sprintf("unsafe.Pointer(%s)", p.Name)
+	case t == "bool":
+		s = p.tmpVar()
+	case strings.HasPrefix(t, "[]"):
+		return []string{
+			fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.tmpVar()),
+			fmt.Sprintf("uintptr(len(%s))", p.Name),
+		}
+	default:
+		s = p.Name
+	}
+	return []string{fmt.Sprintf("uintptr(%s)", s)}
+}
+
+// IsError determines if p parameter is used to return error.
+func (p *Param) IsError() bool {
+	return p.Name == "err" && p.Type == "error"
+}
+
+// HelperType returns type of parameter p used in helper function.
+func (p *Param) HelperType() string {
+	if p.Type == "string" {
+		return p.fn.StrconvType()
+	}
+	return p.Type
+}
+
+// join concatenates parameters ps into a string with sep separator.
+// Each parameter is converted into string by applying fn to it
+// before conversion.
+func join(ps []*Param, fn func(*Param) string, sep string) string {
+	if len(ps) == 0 {
+		return ""
+	}
+	a := make([]string, 0)
+	for _, p := range ps {
+		a = append(a, fn(p))
+	}
+	return strings.Join(a, sep)
+}
+
+// Rets describes function return parameters.
+type Rets struct {
+	Name         string
+	Type         string
+	ReturnsError bool
+	FailCond     string
+}
+
+// ErrorVarName returns error variable name for r.
+func (r *Rets) ErrorVarName() string {
+	if r.ReturnsError {
+		return "err"
+	}
+	if r.Type == "error" {
+		return r.Name
+	}
+	return ""
+}
+
+// ToParams converts r into slice of *Param.
+func (r *Rets) ToParams() []*Param {
+	ps := make([]*Param, 0)
+	if len(r.Name) > 0 {
+		ps = append(ps, &Param{Name: r.Name, Type: r.Type})
+	}
+	if r.ReturnsError {
+		ps = append(ps, &Param{Name: "err", Type: "error"})
+	}
+	return ps
+}
+
+// List returns source code of syscall return parameters.
+func (r *Rets) List() string {
+	s := join(r.ToParams(), func(p *Param) string { return p.Name + " " + p.Type }, ", ")
+	if len(s) > 0 {
+		s = "(" + s + ")"
+	}
+	return s
+}
+
+// PrintList returns source code of trace printing part correspondent
+// to syscall return values.
+func (r *Rets) PrintList() string {
+	return join(r.ToParams(), func(p *Param) string { return fmt.Sprintf(`"%s=", %s, `, p.Name, p.Name) }, `", ", `)
+}
+
+// SetReturnValuesCode returns source code that accepts syscall return values.
+func (r *Rets) SetReturnValuesCode() string {
+	if r.Name == "" && !r.ReturnsError {
+		return ""
+	}
+	retvar := "r0"
+	if r.Name == "" {
+		retvar = "r1"
+	}
+	errvar := "_"
+	if r.ReturnsError {
+		errvar = "e1"
+	}
+	return fmt.Sprintf("%s, _, %s := ", retvar, errvar)
+}
+
+func (r *Rets) useLongHandleErrorCode(retvar string) string {
+	const code = `if %s {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = %sEINVAL
+		}
+	}`
+	cond := retvar + " == 0"
+	if r.FailCond != "" {
+		cond = strings.Replace(r.FailCond, "failretval", retvar, 1)
+	}
+	return fmt.Sprintf(code, cond, syscalldot())
+}
+
+// SetErrorCode returns source code that sets return parameters.
+func (r *Rets) SetErrorCode() string {
+	const code = `if r0 != 0 {
+		%s = %sErrno(r0)
+	}`
+	if r.Name == "" && !r.ReturnsError {
+		return ""
+	}
+	if r.Name == "" {
+		return r.useLongHandleErrorCode("r1")
+	}
+	if r.Type == "error" {
+		return fmt.Sprintf(code, r.Name, syscalldot())
+	}
+	s := ""
+	switch {
+	case r.Type[0] == '*':
+		s = fmt.Sprintf("%s = (%s)(unsafe.Pointer(r0))", r.Name, r.Type)
+	case r.Type == "bool":
+		s = fmt.Sprintf("%s = r0 != 0", r.Name)
+	default:
+		s = fmt.Sprintf("%s = %s(r0)", r.Name, r.Type)
+	}
+	if !r.ReturnsError {
+		return s
+	}
+	return s + "\n\t" + r.useLongHandleErrorCode(r.Name)
+}
+
+// Fn describes syscall function.
+type Fn struct {
+	Name        string
+	Params      []*Param
+	Rets        *Rets
+	PrintTrace  bool
+	dllname     string
+	dllfuncname string
+	src         string
+	// TODO: get rid of this field and just use parameter index instead
+	curTmpVarIdx int // insure tmp variables have uniq names
+}
+
+// extractParams parses s to extract function parameters.
+func extractParams(s string, f *Fn) ([]*Param, error) {
+	s = trim(s)
+	if s == "" {
+		return nil, nil
+	}
+	a := strings.Split(s, ",")
+	ps := make([]*Param, len(a))
+	for i := range ps {
+		s2 := trim(a[i])
+		b := strings.Split(s2, " ")
+		if len(b) != 2 {
+			b = strings.Split(s2, "\t")
+			if len(b) != 2 {
+				return nil, errors.New("Could not extract function parameter from \"" + s2 + "\"")
+			}
+		}
+		ps[i] = &Param{
+			Name:      trim(b[0]),
+			Type:      trim(b[1]),
+			fn:        f,
+			tmpVarIdx: -1,
+		}
+	}
+	return ps, nil
+}
+
+// extractSection extracts text out of string s starting after start
+// and ending just before end. found return value will indicate success,
+// and prefix, body and suffix will contain correspondent parts of string s.
+func extractSection(s string, start, end rune) (prefix, body, suffix string, found bool) {
+	s = trim(s)
+	if strings.HasPrefix(s, string(start)) {
+		// no prefix
+		body = s[1:]
+	} else {
+		a := strings.SplitN(s, string(start), 2)
+		if len(a) != 2 {
+			return "", "", s, false
+		}
+		prefix = a[0]
+		body = a[1]
+	}
+	a := strings.SplitN(body, string(end), 2)
+	if len(a) != 2 {
+		return "", "", "", false
+	}
+	return prefix, a[0], a[1], true
+}
+
+// newFn parses string s and return created function Fn.
+func newFn(s string) (*Fn, error) {
+	s = trim(s)
+	f := &Fn{
+		Rets:       &Rets{},
+		src:        s,
+		PrintTrace: *printTraceFlag,
+	}
+	// function name and args
+	prefix, body, s, found := extractSection(s, '(', ')')
+	if !found || prefix == "" {
+		return nil, errors.New("Could not extract function name and parameters from \"" + f.src + "\"")
+	}
+	f.Name = prefix
+	var err error
+	f.Params, err = extractParams(body, f)
+	if err != nil {
+		return nil, err
+	}
+	// return values
+	_, body, s, found = extractSection(s, '(', ')')
+	if found {
+		r, err := extractParams(body, f)
+		if err != nil {
+			return nil, err
+		}
+		switch len(r) {
+		case 0:
+		case 1:
+			if r[0].IsError() {
+				f.Rets.ReturnsError = true
+			} else {
+				f.Rets.Name = r[0].Name
+				f.Rets.Type = r[0].Type
+			}
+		case 2:
+			if !r[1].IsError() {
+				return nil, errors.New("Only last windows error is allowed as second return value in \"" + f.src + "\"")
+			}
+			f.Rets.ReturnsError = true
+			f.Rets.Name = r[0].Name
+			f.Rets.Type = r[0].Type
+		default:
+			return nil, errors.New("Too many return values in \"" + f.src + "\"")
+		}
+	}
+	// fail condition
+	_, body, s, found = extractSection(s, '[', ']')
+	if found {
+		f.Rets.FailCond = body
+	}
+	// dll and dll function names
+	s = trim(s)
+	if s == "" {
+		return f, nil
+	}
+	if !strings.HasPrefix(s, "=") {
+		return nil, errors.New("Could not extract dll name from \"" + f.src + "\"")
+	}
+	s = trim(s[1:])
+	a := strings.Split(s, ".")
+	switch len(a) {
+	case 1:
+		f.dllfuncname = a[0]
+	case 2:
+		f.dllname = a[0]
+		f.dllfuncname = a[1]
+	default:
+		return nil, errors.New("Could not extract dll name from \"" + f.src + "\"")
+	}
+	return f, nil
+}
+
+// DLLName returns DLL name for function f.
+func (f *Fn) DLLName() string {
+	if f.dllname == "" {
+		return "kernel32"
+	}
+	return f.dllname
+}
+
+// DLLName returns DLL function name for function f.
+func (f *Fn) DLLFuncName() string {
+	if f.dllfuncname == "" {
+		return f.Name
+	}
+	return f.dllfuncname
+}
+
+// ParamList returns source code for function f parameters.
+func (f *Fn) ParamList() string {
+	return join(f.Params, func(p *Param) string { return p.Name + " " + p.Type }, ", ")
+}
+
+// HelperParamList returns source code for helper function f parameters.
+func (f *Fn) HelperParamList() string {
+	return join(f.Params, func(p *Param) string { return p.Name + " " + p.HelperType() }, ", ")
+}
+
+// ParamPrintList returns source code of trace printing part correspondent
+// to syscall input parameters.
+func (f *Fn) ParamPrintList() string {
+	return join(f.Params, func(p *Param) string { return fmt.Sprintf(`"%s=", %s, `, p.Name, p.Name) }, `", ", `)
+}
+
+// ParamCount return number of syscall parameters for function f.
+func (f *Fn) ParamCount() int {
+	n := 0
+	for _, p := range f.Params {
+		n += len(p.SyscallArgList())
+	}
+	return n
+}
+
+// SyscallParamCount determines which version of Syscall/Syscall6/Syscall9/...
+// to use. It returns parameter count for correspondent SyscallX function.
+func (f *Fn) SyscallParamCount() int {
+	n := f.ParamCount()
+	switch {
+	case n <= 3:
+		return 3
+	case n <= 6:
+		return 6
+	case n <= 9:
+		return 9
+	case n <= 12:
+		return 12
+	case n <= 15:
+		return 15
+	default:
+		panic("too many arguments to system call")
+	}
+}
+
+// Syscall determines which SyscallX function to use for function f.
+func (f *Fn) Syscall() string {
+	c := f.SyscallParamCount()
+	if c == 3 {
+		return syscalldot() + "Syscall"
+	}
+	return syscalldot() + "Syscall" + strconv.Itoa(c)
+}
+
+// SyscallParamList returns source code for SyscallX parameters for function f.
+func (f *Fn) SyscallParamList() string {
+	a := make([]string, 0)
+	for _, p := range f.Params {
+		a = append(a, p.SyscallArgList()...)
+	}
+	for len(a) < f.SyscallParamCount() {
+		a = append(a, "0")
+	}
+	return strings.Join(a, ", ")
+}
+
+// HelperCallParamList returns source code of call into function f helper.
+func (f *Fn) HelperCallParamList() string {
+	a := make([]string, 0, len(f.Params))
+	for _, p := range f.Params {
+		s := p.Name
+		if p.Type == "string" {
+			s = p.tmpVar()
+		}
+		a = append(a, s)
+	}
+	return strings.Join(a, ", ")
+}
+
+// IsUTF16 is true, if f is W (utf16) function. It is false
+// for all A (ascii) functions.
+func (f *Fn) IsUTF16() bool {
+	s := f.DLLFuncName()
+	return s[len(s)-1] == 'W'
+}
+
+// StrconvFunc returns name of Go string to OS string function for f.
+func (f *Fn) StrconvFunc() string {
+	if f.IsUTF16() {
+		return syscalldot() + "UTF16PtrFromString"
+	}
+	return syscalldot() + "BytePtrFromString"
+}
+
+// StrconvType returns Go type name used for OS string for f.
+func (f *Fn) StrconvType() string {
+	if f.IsUTF16() {
+		return "*uint16"
+	}
+	return "*byte"
+}
+
+// HasStringParam is true, if f has at least one string parameter.
+// Otherwise it is false.
+func (f *Fn) HasStringParam() bool {
+	for _, p := range f.Params {
+		if p.Type == "string" {
+			return true
+		}
+	}
+	return false
+}
+
+// HelperName returns name of function f helper.
+func (f *Fn) HelperName() string {
+	if !f.HasStringParam() {
+		return f.Name
+	}
+	return "_" + f.Name
+}
+
+// Source files and functions.
+type Source struct {
+	Funcs           []*Fn
+	Files           []string
+	StdLibImports   []string
+	ExternalImports []string
+}
+
+func (src *Source) FuncImports() []*Fn {
+	uniq := make(map[string]bool)
+	r := make([]*Fn, 0)
+	for _, f := range src.Funcs {
+		name := f.DLLFuncName()
+		if _, found := uniq[name]; !found {
+			uniq[name] = true
+			r = append(r, f)
+		}
+	}
+	return r
+}
+
+func (src *Source) Import(pkg string) {
+	src.StdLibImports = append(src.StdLibImports, pkg)
+	sort.Strings(src.StdLibImports)
+}
+
+func (src *Source) ExternalImport(pkg string) {
+	src.ExternalImports = append(src.ExternalImports, pkg)
+	sort.Strings(src.ExternalImports)
+}
+
+// ParseFiles parses files listed in fs and extracts all syscall
+// functions listed in sys comments. It returns source files
+// and functions collection *Source if successful.
+func ParseFiles(fs []string) (*Source, error) {
+	src := &Source{
+		Funcs: make([]*Fn, 0),
+		Files: make([]string, 0),
+		StdLibImports: []string{
+			"unsafe",
+		},
+		ExternalImports: make([]string, 0),
+	}
+	for _, file := range fs {
+		if err := src.ParseFile(file); err != nil {
+			return nil, err
+		}
+	}
+	return src, nil
+}
+
+// DLLs return dll names for a source set src.
+func (src *Source) DLLs() []string {
+	uniq := make(map[string]bool)
+	r := make([]string, 0)
+	for _, f := range src.Funcs {
+		name := f.DLLName()
+		if _, found := uniq[name]; !found {
+			uniq[name] = true
+			r = append(r, name)
+		}
+	}
+	return r
+}
+
+// ParseFile adds additional file path to a source set src.
+func (src *Source) ParseFile(path string) error {
+	file, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	s := bufio.NewScanner(file)
+	for s.Scan() {
+		t := trim(s.Text())
+		if len(t) < 7 {
+			continue
+		}
+		if !strings.HasPrefix(t, "//sys") {
+			continue
+		}
+		t = t[5:]
+		if !(t[0] == ' ' || t[0] == '\t') {
+			continue
+		}
+		f, err := newFn(t[1:])
+		if err != nil {
+			return err
+		}
+		src.Funcs = append(src.Funcs, f)
+	}
+	if err := s.Err(); err != nil {
+		return err
+	}
+	src.Files = append(src.Files, path)
+
+	// get package name
+	fset := token.NewFileSet()
+	_, err = file.Seek(0, 0)
+	if err != nil {
+		return err
+	}
+	pkg, err := parser.ParseFile(fset, "", file, parser.PackageClauseOnly)
+	if err != nil {
+		return err
+	}
+	packageName = pkg.Name.Name
+
+	return nil
+}
+
+// IsStdRepo reports whether src is part of standard library.
+func (src *Source) IsStdRepo() (bool, error) {
+	if len(src.Files) == 0 {
+		return false, errors.New("no input files provided")
+	}
+	abspath, err := filepath.Abs(src.Files[0])
+	if err != nil {
+		return false, err
+	}
+	goroot := runtime.GOROOT()
+	if runtime.GOOS == "windows" {
+		abspath = strings.ToLower(abspath)
+		goroot = strings.ToLower(goroot)
+	}
+	sep := string(os.PathSeparator)
+	if !strings.HasSuffix(goroot, sep) {
+		goroot += sep
+	}
+	return strings.HasPrefix(abspath, goroot), nil
+}
+
+// Generate output source file from a source set src.
+func (src *Source) Generate(w io.Writer) error {
+	const (
+		pkgStd         = iota // any package in std library
+		pkgXSysWindows        // x/sys/windows package
+		pkgOther
+	)
+	isStdRepo, err := src.IsStdRepo()
+	if err != nil {
+		return err
+	}
+	var pkgtype int
+	switch {
+	case isStdRepo:
+		pkgtype = pkgStd
+	case packageName == "windows":
+		// TODO: this needs better logic than just using package name
+		pkgtype = pkgXSysWindows
+	default:
+		pkgtype = pkgOther
+	}
+	if *systemDLL {
+		switch pkgtype {
+		case pkgStd:
+			src.Import("internal/syscall/windows/sysdll")
+		case pkgXSysWindows:
+		default:
+			src.ExternalImport("golang.org/x/sys/windows")
+		}
+	}
+	if packageName != "syscall" {
+		src.Import("syscall")
+	}
+	funcMap := template.FuncMap{
+		"packagename": packagename,
+		"syscalldot":  syscalldot,
+		"newlazydll": func(dll string) string {
+			arg := "\"" + dll + ".dll\""
+			if !*systemDLL {
+				return syscalldot() + "NewLazyDLL(" + arg + ")"
+			}
+			switch pkgtype {
+			case pkgStd:
+				return syscalldot() + "NewLazyDLL(sysdll.Add(" + arg + "))"
+			case pkgXSysWindows:
+				return "NewLazySystemDLL(" + arg + ")"
+			default:
+				return "windows.NewLazySystemDLL(" + arg + ")"
+			}
+		},
+	}
+	t := template.Must(template.New("main").Funcs(funcMap).Parse(srcTemplate))
+	err = t.Execute(w, src)
+	if err != nil {
+		return errors.New("Failed to execute template: " + err.Error())
+	}
+	return nil
+}
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: mksyscall_windows [flags] [path ...]\n")
+	flag.PrintDefaults()
+	os.Exit(1)
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	src, err := ParseFiles(flag.Args())
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var buf bytes.Buffer
+	if err := src.Generate(&buf); err != nil {
+		log.Fatal(err)
+	}
+
+	data, err := format.Source(buf.Bytes())
+	if err != nil {
+		log.Fatal(err)
+	}
+	if *filename == "" {
+		_, err = os.Stdout.Write(data)
+	} else {
+		err = ioutil.WriteFile(*filename, data, 0644)
+	}
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+// TODO: use println instead to print in the following template
+const srcTemplate = `
+
+{{define "main"}}// Code generated by 'go generate'; DO NOT EDIT.
+
+package {{packagename}}
+
+import (
+{{range .StdLibImports}}"{{.}}"
+{{end}}
+
+{{range .ExternalImports}}"{{.}}"
+{{end}}
+)
+
+var _ unsafe.Pointer
+
+// Do the interface allocations only once for common
+// Errno values.
+const (
+	errnoERROR_IO_PENDING = 997
+)
+
+var (
+	errERROR_IO_PENDING error = {{syscalldot}}Errno(errnoERROR_IO_PENDING)
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e {{syscalldot}}Errno) error {
+	switch e {
+	case 0:
+		return nil
+	case errnoERROR_IO_PENDING:
+		return errERROR_IO_PENDING
+	}
+	// TODO: add more here, after collecting data on the common
+	// error values see on Windows. (perhaps when running
+	// all.bat?)
+	return e
+}
+
+var (
+{{template "dlls" .}}
+{{template "funcnames" .}})
+{{range .Funcs}}{{if .HasStringParam}}{{template "helperbody" .}}{{end}}{{template "funcbody" .}}{{end}}
+{{end}}
+
+{{/* help functions */}}
+
+{{define "dlls"}}{{range .DLLs}}	mod{{.}} = {{newlazydll .}}
+{{end}}{{end}}
+
+{{define "funcnames"}}{{range .FuncImports}}	proc{{.DLLFuncName}} = mod{{.DLLName}}.NewProc("{{.DLLFuncName}}")
+{{end}}{{end}}
+
+{{define "helperbody"}}
+func {{.Name}}({{.ParamList}}) {{template "results" .}}{
+{{template "helpertmpvars" .}}	return {{.HelperName}}({{.HelperCallParamList}})
+}
+{{end}}
+
+{{define "funcbody"}}
+func {{.HelperName}}({{.HelperParamList}}) {{template "results" .}}{
+{{template "tmpvars" .}}	{{template "syscall" .}}
+{{template "seterror" .}}{{template "printtrace" .}}	return
+}
+{{end}}
+
+{{define "helpertmpvars"}}{{range .Params}}{{if .TmpVarHelperCode}}	{{.TmpVarHelperCode}}
+{{end}}{{end}}{{end}}
+
+{{define "tmpvars"}}{{range .Params}}{{if .TmpVarCode}}	{{.TmpVarCode}}
+{{end}}{{end}}{{end}}
+
+{{define "results"}}{{if .Rets.List}}{{.Rets.List}} {{end}}{{end}}
+
+{{define "syscall"}}{{.Rets.SetReturnValuesCode}}{{.Syscall}}(proc{{.DLLFuncName}}.Addr(), {{.ParamCount}}, {{.SyscallParamList}}){{end}}
+
+{{define "seterror"}}{{if .Rets.SetErrorCode}}	{{.Rets.SetErrorCode}}
+{{end}}{{end}}
+
+{{define "printtrace"}}{{if .PrintTrace}}	print("SYSCALL: {{.Name}}(", {{.ParamPrintList}}") (", {{.Rets.PrintList}}")\n")
+{{end}}{{end}}
+
+`

vendor/github.com/Microsoft/hcsshim/mksyscall_windows.go

+// 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.
+
+// +build ignore
+
+/*
+mksyscall_windows generates windows system call bodies
+
+It parses all files specified on command line containing function
+prototypes (like syscall_windows.go) and prints system call bodies
+to standard output.
+
+The prototypes are marked by lines beginning with "//sys" and read
+like func declarations if //sys is replaced by func, but:
+
+* The parameter lists must give a name for each argument. This
+  includes return parameters.
+
+* The parameter lists must give a type for each argument:
+  the (x, y, z int) shorthand is not allowed.
+
+* If the return parameter is an error number, it must be named err.
+
+* If go func name needs to be different from it's winapi dll name,
+  the winapi name could be specified at the end, after "=" sign, like
+  //sys LoadLibrary(libname string) (handle uint32, err error) = LoadLibraryA
+
+* Each function that returns err needs to supply a condition, that
+  return value of winapi will be tested against to detect failure.
+  This would set err to windows "last-error", otherwise it will be nil.
+  The value can be provided at end of //sys declaration, like
+  //sys LoadLibrary(libname string) (handle uint32, err error) [failretval==-1] = LoadLibraryA
+  and is [failretval==0] by default.
+
+Usage:
+	mksyscall_windows [flags] [path ...]
+
+The flags are:
+	-output
+		Specify output file name (outputs to console if blank).
+	-trace
+		Generate print statement after every syscall.
+*/
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"flag"
+	"fmt"
+	"go/format"
+	"go/parser"
+	"go/token"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sort"
+	"strconv"
+	"strings"
+	"text/template"
+)
+
+var (
+	filename       = flag.String("output", "", "output file name (standard output if omitted)")
+	printTraceFlag = flag.Bool("trace", false, "generate print statement after every syscall")
+	systemDLL      = flag.Bool("systemdll", true, "whether all DLLs should be loaded from the Windows system directory")
+	winio          = flag.Bool("winio", false, "import go-winio")
+)
+
+func trim(s string) string {
+	return strings.Trim(s, " \t")
+}
+
+var packageName string
+
+func packagename() string {
+	return packageName
+}
+
+func syscalldot() string {
+	if packageName == "syscall" {
+		return ""
+	}
+	return "syscall."
+}
+
+// Param is function parameter
+type Param struct {
+	Name      string
+	Type      string
+	fn        *Fn
+	tmpVarIdx int
+}
+
+// tmpVar returns temp variable name that will be used to represent p during syscall.
+func (p *Param) tmpVar() string {
+	if p.tmpVarIdx < 0 {
+		p.tmpVarIdx = p.fn.curTmpVarIdx
+		p.fn.curTmpVarIdx++
+	}
+	return fmt.Sprintf("_p%d", p.tmpVarIdx)
+}
+
+// BoolTmpVarCode returns source code for bool temp variable.
+func (p *Param) BoolTmpVarCode() string {
+	const code = `var %s uint32
+	if %s {
+		%s = 1
+	} else {
+		%s = 0
+	}`
+	tmp := p.tmpVar()
+	return fmt.Sprintf(code, tmp, p.Name, tmp, tmp)
+}
+
+// SliceTmpVarCode returns source code for slice temp variable.
+func (p *Param) SliceTmpVarCode() string {
+	const code = `var %s *%s
+	if len(%s) > 0 {
+		%s = &%s[0]
+	}`
+	tmp := p.tmpVar()
+	return fmt.Sprintf(code, tmp, p.Type[2:], p.Name, tmp, p.Name)
+}
+
+// StringTmpVarCode returns source code for string temp variable.
+func (p *Param) StringTmpVarCode() string {
+	errvar := p.fn.Rets.ErrorVarName()
+	if errvar == "" {
+		errvar = "_"
+	}
+	tmp := p.tmpVar()
+	const code = `var %s %s
+	%s, %s = %s(%s)`
+	s := fmt.Sprintf(code, tmp, p.fn.StrconvType(), tmp, errvar, p.fn.StrconvFunc(), p.Name)
+	if errvar == "-" {
+		return s
+	}
+	const morecode = `
+	if %s != nil {
+		return
+	}`
+	return s + fmt.Sprintf(morecode, errvar)
+}
+
+// TmpVarCode returns source code for temp variable.
+func (p *Param) TmpVarCode() string {
+	switch {
+	case p.Type == "bool":
+		return p.BoolTmpVarCode()
+	case strings.HasPrefix(p.Type, "[]"):
+		return p.SliceTmpVarCode()
+	default:
+		return ""
+	}
+}
+
+// TmpVarHelperCode returns source code for helper's temp variable.
+func (p *Param) TmpVarHelperCode() string {
+	if p.Type != "string" {
+		return ""
+	}
+	return p.StringTmpVarCode()
+}
+
+// SyscallArgList returns source code fragments representing p parameter
+// in syscall. Slices are translated into 2 syscall parameters: pointer to
+// the first element and length.
+func (p *Param) SyscallArgList() []string {
+	t := p.HelperType()
+	var s string
+	switch {
+	case t[0] == '*':
+		s = fmt.Sprintf("unsafe.Pointer(%s)", p.Name)
+	case t == "bool":
+		s = p.tmpVar()
+	case strings.HasPrefix(t, "[]"):
+		return []string{
+			fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.tmpVar()),
+			fmt.Sprintf("uintptr(len(%s))", p.Name),
+		}
+	default:
+		s = p.Name
+	}
+	return []string{fmt.Sprintf("uintptr(%s)", s)}
+}
+
+// IsError determines if p parameter is used to return error.
+func (p *Param) IsError() bool {
+	return p.Name == "err" && p.Type == "error"
+}
+
+// HelperType returns type of parameter p used in helper function.
+func (p *Param) HelperType() string {
+	if p.Type == "string" {
+		return p.fn.StrconvType()
+	}
+	return p.Type
+}
+
+// join concatenates parameters ps into a string with sep separator.
+// Each parameter is converted into string by applying fn to it
+// before conversion.
+func join(ps []*Param, fn func(*Param) string, sep string) string {
+	if len(ps) == 0 {
+		return ""
+	}
+	a := make([]string, 0)
+	for _, p := range ps {
+		a = append(a, fn(p))
+	}
+	return strings.Join(a, sep)
+}
+
+// Rets describes function return parameters.
+type Rets struct {
+	Name         string
+	Type         string
+	ReturnsError bool
+	FailCond     string
+}
+
+// ErrorVarName returns error variable name for r.
+func (r *Rets) ErrorVarName() string {
+	if r.ReturnsError {
+		return "err"
+	}
+	if r.Type == "error" {
+		return r.Name
+	}
+	return ""
+}
+
+// ToParams converts r into slice of *Param.
+func (r *Rets) ToParams() []*Param {
+	ps := make([]*Param, 0)
+	if len(r.Name) > 0 {
+		ps = append(ps, &Param{Name: r.Name, Type: r.Type})
+	}
+	if r.ReturnsError {
+		ps = append(ps, &Param{Name: "err", Type: "error"})
+	}
+	return ps
+}
+
+// List returns source code of syscall return parameters.
+func (r *Rets) List() string {
+	s := join(r.ToParams(), func(p *Param) string { return p.Name + " " + p.Type }, ", ")
+	if len(s) > 0 {
+		s = "(" + s + ")"
+	}
+	return s
+}
+
+// PrintList returns source code of trace printing part correspondent
+// to syscall return values.
+func (r *Rets) PrintList() string {
+	return join(r.ToParams(), func(p *Param) string { return fmt.Sprintf(`"%s=", %s, `, p.Name, p.Name) }, `", ", `)
+}
+
+// SetReturnValuesCode returns source code that accepts syscall return values.
+func (r *Rets) SetReturnValuesCode() string {
+	if r.Name == "" && !r.ReturnsError {
+		return ""
+	}
+	retvar := "r0"
+	if r.Name == "" {
+		retvar = "r1"
+	}
+	errvar := "_"
+	if r.ReturnsError {
+		errvar = "e1"
+	}
+	return fmt.Sprintf("%s, _, %s := ", retvar, errvar)
+}
+
+func (r *Rets) useLongHandleErrorCode(retvar string) string {
+	const code = `if %s {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = %sEINVAL
+		}
+	}`
+	cond := retvar + " == 0"
+	if r.FailCond != "" {
+		cond = strings.Replace(r.FailCond, "failretval", retvar, 1)
+	}
+	return fmt.Sprintf(code, cond, syscalldot())
+}
+
+// SetErrorCode returns source code that sets return parameters.
+func (r *Rets) SetErrorCode() string {
+	const code = `if r0 != 0 {
+		%s = %sErrno(r0)
+	}`
+	const hrCode = `if int32(r0) < 0 {
+		if r0&0x1fff0000 == 0x00070000 {
+			r0 &= 0xffff
+		}
+		%s = %sErrno(r0)
+	}`
+	if r.Name == "" && !r.ReturnsError {
+		return ""
+	}
+	if r.Name == "" {
+		return r.useLongHandleErrorCode("r1")
+	}
+	if r.Type == "error" {
+		if r.Name == "hr" {
+			return fmt.Sprintf(hrCode, r.Name, syscalldot())
+		} else {
+			return fmt.Sprintf(code, r.Name, syscalldot())
+		}
+	}
+	s := ""
+	switch {
+	case r.Type[0] == '*':
+		s = fmt.Sprintf("%s = (%s)(unsafe.Pointer(r0))", r.Name, r.Type)
+	case r.Type == "bool":
+		s = fmt.Sprintf("%s = r0 != 0", r.Name)
+	default:
+		s = fmt.Sprintf("%s = %s(r0)", r.Name, r.Type)
+	}
+	if !r.ReturnsError {
+		return s
+	}
+	return s + "\n\t" + r.useLongHandleErrorCode(r.Name)
+}
+
+// Fn describes syscall function.
+type Fn struct {
+	Name        string
+	Params      []*Param
+	Rets        *Rets
+	PrintTrace  bool
+	confirmproc bool
+	dllname     string
+	dllfuncname string
+	src         string
+	// TODO: get rid of this field and just use parameter index instead
+	curTmpVarIdx int // insure tmp variables have uniq names
+}
+
+// extractParams parses s to extract function parameters.
+func extractParams(s string, f *Fn) ([]*Param, error) {
+	s = trim(s)
+	if s == "" {
+		return nil, nil
+	}
+	a := strings.Split(s, ",")
+	ps := make([]*Param, len(a))
+	for i := range ps {
+		s2 := trim(a[i])
+		b := strings.Split(s2, " ")
+		if len(b) != 2 {
+			b = strings.Split(s2, "\t")
+			if len(b) != 2 {
+				return nil, errors.New("Could not extract function parameter from \"" + s2 + "\"")
+			}
+		}
+		ps[i] = &Param{
+			Name:      trim(b[0]),
+			Type:      trim(b[1]),
+			fn:        f,
+			tmpVarIdx: -1,
+		}
+	}
+	return ps, nil
+}
+
+// extractSection extracts text out of string s starting after start
+// and ending just before end. found return value will indicate success,
+// and prefix, body and suffix will contain correspondent parts of string s.
+func extractSection(s string, start, end rune) (prefix, body, suffix string, found bool) {
+	s = trim(s)
+	if strings.HasPrefix(s, string(start)) {
+		// no prefix
+		body = s[1:]
+	} else {
+		a := strings.SplitN(s, string(start), 2)
+		if len(a) != 2 {
+			return "", "", s, false
+		}
+		prefix = a[0]
+		body = a[1]
+	}
+	a := strings.SplitN(body, string(end), 2)
+	if len(a) != 2 {
+		return "", "", "", false
+	}
+	return prefix, a[0], a[1], true
+}
+
+// newFn parses string s and return created function Fn.
+func newFn(s string) (*Fn, error) {
+	s = trim(s)
+	f := &Fn{
+		Rets:       &Rets{},
+		src:        s,
+		PrintTrace: *printTraceFlag,
+	}
+	// function name and args
+	prefix, body, s, found := extractSection(s, '(', ')')
+	if !found || prefix == "" {
+		return nil, errors.New("Could not extract function name and parameters from \"" + f.src + "\"")
+	}
+	f.Name = prefix
+	var err error
+	f.Params, err = extractParams(body, f)
+	if err != nil {
+		return nil, err
+	}
+	// return values
+	_, body, s, found = extractSection(s, '(', ')')
+	if found {
+		r, err := extractParams(body, f)
+		if err != nil {
+			return nil, err
+		}
+		switch len(r) {
+		case 0:
+		case 1:
+			if r[0].IsError() {
+				f.Rets.ReturnsError = true
+			} else {
+				f.Rets.Name = r[0].Name
+				f.Rets.Type = r[0].Type
+			}
+		case 2:
+			if !r[1].IsError() {
+				return nil, errors.New("Only last windows error is allowed as second return value in \"" + f.src + "\"")
+			}
+			f.Rets.ReturnsError = true
+			f.Rets.Name = r[0].Name
+			f.Rets.Type = r[0].Type
+		default:
+			return nil, errors.New("Too many return values in \"" + f.src + "\"")
+		}
+	}
+	// fail condition
+	_, body, s, found = extractSection(s, '[', ']')
+	if found {
+		f.Rets.FailCond = body
+	}
+	// dll and dll function names
+	s = trim(s)
+	if s == "" {
+		return f, nil
+	}
+	if !strings.HasPrefix(s, "=") {
+		return nil, errors.New("Could not extract dll name from \"" + f.src + "\"")
+	}
+	s = trim(s[1:])
+	a := strings.Split(s, ".")
+	switch len(a) {
+	case 1:
+		f.dllfuncname = a[0]
+	case 2:
+		f.dllname = a[0]
+		f.dllfuncname = a[1]
+	default:
+		return nil, errors.New("Could not extract dll name from \"" + f.src + "\"")
+	}
+	if f.dllfuncname[len(f.dllfuncname)-1] == '?' {
+		f.confirmproc = true
+		f.dllfuncname = f.dllfuncname[0 : len(f.dllfuncname)-1]
+	}
+	return f, nil
+}
+
+// DLLName returns DLL name for function f.
+func (f *Fn) DLLName() string {
+	if f.dllname == "" {
+		return "kernel32"
+	}
+	return f.dllname
+}
+
+// DLLName returns DLL function name for function f.
+func (f *Fn) DLLFuncName() string {
+	if f.dllfuncname == "" {
+		return f.Name
+	}
+	return f.dllfuncname
+}
+
+func (f *Fn) ConfirmProc() bool {
+	return f.confirmproc
+}
+
+// ParamList returns source code for function f parameters.
+func (f *Fn) ParamList() string {
+	return join(f.Params, func(p *Param) string { return p.Name + " " + p.Type }, ", ")
+}
+
+// HelperParamList returns source code for helper function f parameters.
+func (f *Fn) HelperParamList() string {
+	return join(f.Params, func(p *Param) string { return p.Name + " " + p.HelperType() }, ", ")
+}
+
+// ParamPrintList returns source code of trace printing part correspondent
+// to syscall input parameters.
+func (f *Fn) ParamPrintList() string {
+	return join(f.Params, func(p *Param) string { return fmt.Sprintf(`"%s=", %s, `, p.Name, p.Name) }, `", ", `)
+}
+
+// ParamCount return number of syscall parameters for function f.
+func (f *Fn) ParamCount() int {
+	n := 0
+	for _, p := range f.Params {
+		n += len(p.SyscallArgList())
+	}
+	return n
+}
+
+// SyscallParamCount determines which version of Syscall/Syscall6/Syscall9/...
+// to use. It returns parameter count for correspondent SyscallX function.
+func (f *Fn) SyscallParamCount() int {
+	n := f.ParamCount()
+	switch {
+	case n <= 3:
+		return 3
+	case n <= 6:
+		return 6
+	case n <= 9:
+		return 9
+	case n <= 12:
+		return 12
+	case n <= 15:
+		return 15
+	default:
+		panic("too many arguments to system call")
+	}
+}
+
+// Syscall determines which SyscallX function to use for function f.
+func (f *Fn) Syscall() string {
+	c := f.SyscallParamCount()
+	if c == 3 {
+		return syscalldot() + "Syscall"
+	}
+	return syscalldot() + "Syscall" + strconv.Itoa(c)
+}
+
+// SyscallParamList returns source code for SyscallX parameters for function f.
+func (f *Fn) SyscallParamList() string {
+	a := make([]string, 0)
+	for _, p := range f.Params {
+		a = append(a, p.SyscallArgList()...)
+	}
+	for len(a) < f.SyscallParamCount() {
+		a = append(a, "0")
+	}
+	return strings.Join(a, ", ")
+}
+
+// HelperCallParamList returns source code of call into function f helper.
+func (f *Fn) HelperCallParamList() string {
+	a := make([]string, 0, len(f.Params))
+	for _, p := range f.Params {
+		s := p.Name
+		if p.Type == "string" {
+			s = p.tmpVar()
+		}
+		a = append(a, s)
+	}
+	return strings.Join(a, ", ")
+}
+
+// IsUTF16 is true, if f is W (utf16) function. It is false
+// for all A (ascii) functions.
+func (_ *Fn) IsUTF16() bool {
+	return true
+}
+
+// StrconvFunc returns name of Go string to OS string function for f.
+func (f *Fn) StrconvFunc() string {
+	if f.IsUTF16() {
+		return syscalldot() + "UTF16PtrFromString"
+	}
+	return syscalldot() + "BytePtrFromString"
+}
+
+// StrconvType returns Go type name used for OS string for f.
+func (f *Fn) StrconvType() string {
+	if f.IsUTF16() {
+		return "*uint16"
+	}
+	return "*byte"
+}
+
+// HasStringParam is true, if f has at least one string parameter.
+// Otherwise it is false.
+func (f *Fn) HasStringParam() bool {
+	for _, p := range f.Params {
+		if p.Type == "string" {
+			return true
+		}
+	}
+	return false
+}
+
+var uniqDllFuncName = make(map[string]bool)
+
+// IsNotDuplicate is true if f is not a duplicated function
+func (f *Fn) IsNotDuplicate() bool {
+	funcName := f.DLLFuncName()
+	if uniqDllFuncName[funcName] == false {
+		uniqDllFuncName[funcName] = true
+		return true
+	}
+	return false
+}
+
+// HelperName returns name of function f helper.
+func (f *Fn) HelperName() string {
+	if !f.HasStringParam() {
+		return f.Name
+	}
+	return "_" + f.Name
+}
+
+// Source files and functions.
+type Source struct {
+	Funcs           []*Fn
+	Files           []string
+	StdLibImports   []string
+	ExternalImports []string
+}
+
+func (src *Source) Import(pkg string) {
+	src.StdLibImports = append(src.StdLibImports, pkg)
+	sort.Strings(src.StdLibImports)
+}
+
+func (src *Source) ExternalImport(pkg string) {
+	src.ExternalImports = append(src.ExternalImports, pkg)
+	sort.Strings(src.ExternalImports)
+}
+
+// ParseFiles parses files listed in fs and extracts all syscall
+// functions listed in  sys comments. It returns source files
+// and functions collection *Source if successful.
+func ParseFiles(fs []string) (*Source, error) {
+	src := &Source{
+		Funcs: make([]*Fn, 0),
+		Files: make([]string, 0),
+		StdLibImports: []string{
+			"unsafe",
+		},
+		ExternalImports: make([]string, 0),
+	}
+	for _, file := range fs {
+		if err := src.ParseFile(file); err != nil {
+			return nil, err
+		}
+	}
+	return src, nil
+}
+
+// DLLs return dll names for a source set src.
+func (src *Source) DLLs() []string {
+	uniq := make(map[string]bool)
+	r := make([]string, 0)
+	for _, f := range src.Funcs {
+		name := f.DLLName()
+		if _, found := uniq[name]; !found {
+			uniq[name] = true
+			r = append(r, name)
+		}
+	}
+	return r
+}
+
+// ParseFile adds additional file path to a source set src.
+func (src *Source) ParseFile(path string) error {
+	file, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	s := bufio.NewScanner(file)
+	for s.Scan() {
+		t := trim(s.Text())
+		if len(t) < 7 {
+			continue
+		}
+		if !strings.HasPrefix(t, "//sys") {
+			continue
+		}
+		t = t[5:]
+		if !(t[0] == ' ' || t[0] == '\t') {
+			continue
+		}
+		f, err := newFn(t[1:])
+		if err != nil {
+			return err
+		}
+		src.Funcs = append(src.Funcs, f)
+	}
+	if err := s.Err(); err != nil {
+		return err
+	}
+	src.Files = append(src.Files, path)
+
+	// get package name
+	fset := token.NewFileSet()
+	_, err = file.Seek(0, 0)
+	if err != nil {
+		return err
+	}
+	pkg, err := parser.ParseFile(fset, "", file, parser.PackageClauseOnly)
+	if err != nil {
+		return err
+	}
+	packageName = pkg.Name.Name
+
+	return nil
+}
+
+// IsStdRepo returns true if src is part of standard library.
+func (src *Source) IsStdRepo() (bool, error) {
+	if len(src.Files) == 0 {
+		return false, errors.New("no input files provided")
+	}
+	abspath, err := filepath.Abs(src.Files[0])
+	if err != nil {
+		return false, err
+	}
+	goroot := runtime.GOROOT()
+	if runtime.GOOS == "windows" {
+		abspath = strings.ToLower(abspath)
+		goroot = strings.ToLower(goroot)
+	}
+	sep := string(os.PathSeparator)
+	if !strings.HasSuffix(goroot, sep) {
+		goroot += sep
+	}
+	return strings.HasPrefix(abspath, goroot), nil
+}
+
+// Generate output source file from a source set src.
+func (src *Source) Generate(w io.Writer) error {
+	const (
+		pkgStd         = iota // any package in std library
+		pkgXSysWindows        // x/sys/windows package
+		pkgOther
+	)
+	isStdRepo, err := src.IsStdRepo()
+	if err != nil {
+		return err
+	}
+	var pkgtype int
+	switch {
+	case isStdRepo:
+		pkgtype = pkgStd
+	case packageName == "windows":
+		// TODO: this needs better logic than just using package name
+		pkgtype = pkgXSysWindows
+	default:
+		pkgtype = pkgOther
+	}
+	if *systemDLL {
+		switch pkgtype {
+		case pkgStd:
+			src.Import("internal/syscall/windows/sysdll")
+		case pkgXSysWindows:
+		default:
+			src.ExternalImport("golang.org/x/sys/windows")
+		}
+	}
+	if *winio {
+		src.ExternalImport("github.com/Microsoft/go-winio")
+	}
+	if packageName != "syscall" {
+		src.Import("syscall")
+	}
+	funcMap := template.FuncMap{
+		"packagename": packagename,
+		"syscalldot":  syscalldot,
+		"newlazydll": func(dll string) string {
+			arg := "\"" + dll + ".dll\""
+			if !*systemDLL {
+				return syscalldot() + "NewLazyDLL(" + arg + ")"
+			}
+			if strings.HasPrefix(dll, "api_") || strings.HasPrefix(dll, "ext_") {
+				arg = strings.Replace(arg, "_", "-", -1)
+			}
+			switch pkgtype {
+			case pkgStd:
+				return syscalldot() + "NewLazyDLL(sysdll.Add(" + arg + "))"
+			case pkgXSysWindows:
+				return "NewLazySystemDLL(" + arg + ")"
+			default:
+				return "windows.NewLazySystemDLL(" + arg + ")"
+			}
+		},
+	}
+	t := template.Must(template.New("main").Funcs(funcMap).Parse(srcTemplate))
+	err = t.Execute(w, src)
+	if err != nil {
+		return errors.New("Failed to execute template: " + err.Error())
+	}
+	return nil
+}
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: mksyscall_windows [flags] [path ...]\n")
+	flag.PrintDefaults()
+	os.Exit(1)
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	src, err := ParseFiles(flag.Args())
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var buf bytes.Buffer
+	if err := src.Generate(&buf); err != nil {
+		log.Fatal(err)
+	}
+
+	data, err := format.Source(buf.Bytes())
+	if err != nil {
+		log.Fatal(err)
+	}
+	if *filename == "" {
+		_, err = os.Stdout.Write(data)
+	} else {
+		err = ioutil.WriteFile(*filename, data, 0644)
+	}
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+// TODO: use println instead to print in the following template
+const srcTemplate = `
+
+{{define "main"}}// Code generated mksyscall_windows.exe DO NOT EDIT
+
+package {{packagename}}
+
+import (
+{{range .StdLibImports}}"{{.}}"
+{{end}}
+
+{{range .ExternalImports}}"{{.}}"
+{{end}}
+)
+
+var _ unsafe.Pointer
+
+// Do the interface allocations only once for common
+// Errno values.
+const (
+	errnoERROR_IO_PENDING = 997
+)
+
+var (
+	errERROR_IO_PENDING error = {{syscalldot}}Errno(errnoERROR_IO_PENDING)
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e {{syscalldot}}Errno) error {
+	switch e {
+	case 0:
+		return nil
+	case errnoERROR_IO_PENDING:
+		return errERROR_IO_PENDING
+	}
+	// TODO: add more here, after collecting data on the common
+	// error values see on Windows. (perhaps when running
+	// all.bat?)
+	return e
+}
+
+var (
+{{template "dlls" .}}
+{{template "funcnames" .}})
+{{range .Funcs}}{{if .HasStringParam}}{{template "helperbody" .}}{{end}}{{template "funcbody" .}}{{end}}
+{{end}}
+
+{{/* help functions */}}
+
+{{define "dlls"}}{{range .DLLs}}	mod{{.}} = {{newlazydll .}}
+{{end}}{{end}}
+
+{{define "funcnames"}}{{range .Funcs}}{{if .IsNotDuplicate}}	proc{{.DLLFuncName}} = mod{{.DLLName}}.NewProc("{{.DLLFuncName}}"){{end}}
+{{end}}{{end}}
+
+{{define "helperbody"}}
+func {{.Name}}({{.ParamList}}) {{template "results" .}}{
+{{template "helpertmpvars" .}}	return {{.HelperName}}({{.HelperCallParamList}})
+}
+{{end}}
+
+{{define "funcbody"}}
+func {{.HelperName}}({{.HelperParamList}}) {{template "results" .}}{
+{{template "tmpvars" .}}	{{template "syscallcheck" .}}{{template "syscall" .}}
+{{template "seterror" .}}{{template "printtrace" .}}	return
+}
+{{end}}
+
+{{define "helpertmpvars"}}{{range .Params}}{{if .TmpVarHelperCode}}	{{.TmpVarHelperCode}}
+{{end}}{{end}}{{end}}
+
+{{define "tmpvars"}}{{range .Params}}{{if .TmpVarCode}}	{{.TmpVarCode}}
+{{end}}{{end}}{{end}}
+
+{{define "results"}}{{if .Rets.List}}{{.Rets.List}} {{end}}{{end}}
+
+{{define "syscall"}}{{.Rets.SetReturnValuesCode}}{{.Syscall}}(proc{{.DLLFuncName}}.Addr(), {{.ParamCount}}, {{.SyscallParamList}}){{end}}
+
+{{define "syscallcheck"}}{{if .ConfirmProc}}if {{.Rets.ErrorVarName}} = proc{{.DLLFuncName}}.Find(); {{.Rets.ErrorVarName}} != nil {
+    return
+}
+{{end}}{{end}}
+
+
+{{define "seterror"}}{{if .Rets.SetErrorCode}}	{{.Rets.SetErrorCode}}
+{{end}}{{end}}
+
+{{define "printtrace"}}{{if .PrintTrace}}	print("SYSCALL: {{.Name}}(", {{.ParamPrintList}}") (", {{.Rets.PrintList}}")\n")
+{{end}}{{end}}
+
+`

vendor/github.com/chai2010/gettext-go/gettext/hello.go

+// Copyright 2013 <chaishushan{AT}gmail.com>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+
+	"github.com/chai2010/gettext-go"
+)
+
+func main() {
+	gettext.SetLocale("zh_CN")
+	gettext.BindTextdomain("hello", "../examples/local", nil)
+	gettext.Textdomain("hello")
+
+	fmt.Println(gettext.Gettext("Hello, world!"))
+	// Output: 你好, 世界!
+}

vendor/github.com/containerd/containerd/.appveyor.yml

@@ -12,7 +12,7 @@ environment:
   GOPATH: C:\gopath
   CGO_ENABLED: 1
   matrix:
-    - GO_VERSION: 1.12.10
+    - GO_VERSION: 1.12.12
 
 before_build:
   - choco install -y mingw --version 5.3.0

vendor/github.com/containerd/containerd/.travis.yml

@@ -10,7 +10,7 @@ os:
 - linux
 
 go:
-  - "1.12.x"
+  - "1.12.12"
 
 env:
   - TRAVIS_GOOS=linux TEST_RUNTIME=io.containerd.runc.v1 TRAVIS_CGO_ENABLED=1 TRAVIS_DISTRO=bionic

vendor/github.com/containerd/containerd/diff/apply/apply_linux.go

@@ -26,12 +26,18 @@ import (
 	"github.com/containerd/containerd/archive"
 	"github.com/containerd/containerd/errdefs"
 	"github.com/containerd/containerd/mount"
+	"github.com/opencontainers/runc/libcontainer/system"
 	"github.com/pkg/errors"
 )
 
 func apply(ctx context.Context, mounts []mount.Mount, r io.Reader) error {
 	switch {
 	case len(mounts) == 1 && mounts[0].Type == "overlay":
+		// OverlayConvertWhiteout (mknod c 0 0) doesn't work in userns.
+		// https://github.com/containerd/containerd/issues/3762
+		if system.RunningInUserNS() {
+			break
+		}
 		path, parents, err := getOverlayPath(mounts[0].Options)
 		if err != nil {
 			if errdefs.IsInvalidArgument(err) {

vendor/github.com/containerd/continuity/manifest_test_darwin.go

+// +build ignore
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package continuity
+
+import "os"
+
+var (
+	devNullResource = resource{
+		kind:  chardev,
+		path:  "/dev/null",
+		major: 3,
+		minor: 2,
+		mode:  0666 | os.ModeDevice | os.ModeCharDevice,
+	}
+
+	devZeroResource = resource{
+		kind:  chardev,
+		path:  "/dev/zero",
+		major: 3,
+		minor: 3,
+		mode:  0666 | os.ModeDevice | os.ModeCharDevice,
+	}
+)

vendor/github.com/globalsign/mgo/bson/bson_corpus_spec_test_generator.go

+// +build ignore
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/format"
+	"html/template"
+	"io/ioutil"
+	"log"
+	"path/filepath"
+	"strings"
+
+	"github.com/globalsign/mgo/internal/json"
+)
+
+func main() {
+	log.SetFlags(0)
+	log.SetPrefix(name + ": ")
+
+	var g Generator
+
+	fmt.Fprintf(&g, "// Code generated by \"%s.go\"; DO NOT EDIT\n\n", name)
+
+	src := g.generate()
+
+	err := ioutil.WriteFile(fmt.Sprintf("%s.go", strings.TrimSuffix(name, "_generator")), src, 0644)
+	if err != nil {
+		log.Fatalf("writing output: %s", err)
+	}
+}
+
+// Generator holds the state of the analysis. Primarily used to buffer
+// the output for format.Source.
+type Generator struct {
+	bytes.Buffer // Accumulated output.
+}
+
+// format returns the gofmt-ed contents of the Generator's buffer.
+func (g *Generator) format() []byte {
+	src, err := format.Source(g.Bytes())
+	if err != nil {
+		// Should never happen, but can arise when developing this code.
+		// The user can compile the output to see the error.
+		log.Printf("warning: internal error: invalid Go generated: %s", err)
+		log.Printf("warning: compile the package to analyze the error")
+		return g.Bytes()
+	}
+	return src
+}
+
+// EVERYTHING ABOVE IS CONSTANT BETWEEN THE GENERATORS
+
+const name = "bson_corpus_spec_test_generator"
+
+func (g *Generator) generate() []byte {
+
+	testFiles, err := filepath.Glob("./specdata/specifications/source/bson-corpus/tests/*.json")
+	if err != nil {
+		log.Fatalf("error reading bson-corpus files: %s", err)
+	}
+
+	tests, err := g.loadTests(testFiles)
+	if err != nil {
+		log.Fatalf("error loading tests: %s", err)
+	}
+
+	tmpl, err := g.getTemplate()
+	if err != nil {
+		log.Fatalf("error loading template: %s", err)
+	}
+
+	tmpl.Execute(&g.Buffer, tests)
+
+	return g.format()
+}
+
+func (g *Generator) loadTests(filenames []string) ([]*testDef, error) {
+	var tests []*testDef
+	for _, filename := range filenames {
+		test, err := g.loadTest(filename)
+		if err != nil {
+			return nil, err
+		}
+
+		tests = append(tests, test)
+	}
+
+	return tests, nil
+}
+
+func (g *Generator) loadTest(filename string) (*testDef, error) {
+	content, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	var testDef testDef
+	err = json.Unmarshal(content, &testDef)
+	if err != nil {
+		return nil, err
+	}
+
+	names := make(map[string]struct{})
+
+	for i := len(testDef.Valid) - 1; i >= 0; i-- {
+		if testDef.BsonType == "0x05" && testDef.Valid[i].Description == "subtype 0x02" {
+			testDef.Valid = append(testDef.Valid[:i], testDef.Valid[i+1:]...)
+			continue
+		}
+
+		name := cleanupFuncName(testDef.Description + "_" + testDef.Valid[i].Description)
+		nameIdx := name
+		j := 1
+		for {
+			if _, ok := names[nameIdx]; !ok {
+				break
+			}
+
+			nameIdx = fmt.Sprintf("%s_%d", name, j)
+		}
+
+		names[nameIdx] = struct{}{}
+
+		testDef.Valid[i].TestDef = &testDef
+		testDef.Valid[i].Name = nameIdx
+		testDef.Valid[i].StructTest = testDef.TestKey != "" &&
+			(testDef.BsonType != "0x05" || strings.Contains(testDef.Valid[i].Description, "0x00")) &&
+			!testDef.Deprecated
+	}
+
+	for i := len(testDef.DecodeErrors) - 1; i >= 0; i-- {
+		if strings.Contains(testDef.DecodeErrors[i].Description, "UTF-8") {
+			testDef.DecodeErrors = append(testDef.DecodeErrors[:i], testDef.DecodeErrors[i+1:]...)
+			continue
+		}
+
+		name := cleanupFuncName(testDef.Description + "_" + testDef.DecodeErrors[i].Description)
+		nameIdx := name
+		j := 1
+		for {
+			if _, ok := names[nameIdx]; !ok {
+				break
+			}
+
+			nameIdx = fmt.Sprintf("%s_%d", name, j)
+		}
+		names[nameIdx] = struct{}{}
+
+		testDef.DecodeErrors[i].Name = nameIdx
+	}
+
+	return &testDef, nil
+}
+
+func (g *Generator) getTemplate() (*template.Template, error) {
+	content := `package bson_test
+
+import (
+    "encoding/hex"
+	"time"
+
+	. "gopkg.in/check.v1"
+    "github.com/globalsign/mgo/bson"
+)
+
+func testValid(c *C, in []byte, expected []byte, result interface{}) {
+	err := bson.Unmarshal(in, result)
+	c.Assert(err, IsNil)
+
+	out, err := bson.Marshal(result)
+	c.Assert(err, IsNil)
+
+	c.Assert(string(expected), Equals, string(out), Commentf("roundtrip failed for %T, expected '%x' but got '%x'", result, expected, out))
+}
+
+func testDecodeSkip(c *C, in []byte) {
+	err := bson.Unmarshal(in, &struct{}{})
+	c.Assert(err, IsNil)
+}
+
+func testDecodeError(c *C, in []byte, result interface{}) {
+	err := bson.Unmarshal(in, result)
+	c.Assert(err, Not(IsNil))
+}
+
+{{range .}}
+{{range .Valid}}
+func (s *S) Test{{.Name}}(c *C) {
+    b, err := hex.DecodeString("{{.Bson}}")
+	c.Assert(err, IsNil)
+
+    {{if .CanonicalBson}}
+    cb, err := hex.DecodeString("{{.CanonicalBson}}")
+	c.Assert(err, IsNil)
+	{{else}}
+    cb := b
+    {{end}}
+
+    var resultD bson.D
+	testValid(c, b, cb, &resultD)
+	{{if .StructTest}}var resultS struct {
+		Element {{.TestDef.GoType}} ` + "`bson:\"{{.TestDef.TestKey}}\"`" + `
+	}
+	testValid(c, b, cb, &resultS){{end}}
+
+	testDecodeSkip(c, b)
+}
+{{end}}
+
+{{range .DecodeErrors}}
+func (s *S) Test{{.Name}}(c *C) {
+	b, err := hex.DecodeString("{{.Bson}}")
+	c.Assert(err, IsNil)
+
+	var resultD bson.D
+	testDecodeError(c, b, &resultD)
+}
+{{end}}
+{{end}}
+`
+	tmpl, err := template.New("").Parse(content)
+	if err != nil {
+		return nil, err
+	}
+	return tmpl, nil
+}
+
+func cleanupFuncName(name string) string {
+	return strings.Map(func(r rune) rune {
+		if (r >= 48 && r <= 57) || (r >= 65 && r <= 90) || (r >= 97 && r <= 122) {
+			return r
+		}
+		return '_'
+	}, name)
+}
+
+type testDef struct {
+	Description  string         `json:"description"`
+	BsonType     string         `json:"bson_type"`
+	TestKey      string         `json:"test_key"`
+	Valid        []*valid       `json:"valid"`
+	DecodeErrors []*decodeError `json:"decodeErrors"`
+	Deprecated   bool           `json:"deprecated"`
+}
+
+func (t *testDef) GoType() string {
+	switch t.BsonType {
+	case "0x01":
+		return "float64"
+	case "0x02":
+		return "string"
+	case "0x03":
+		return "bson.D"
+	case "0x04":
+		return "[]interface{}"
+	case "0x05":
+		return "[]byte"
+	case "0x07":
+		return "bson.ObjectId"
+	case "0x08":
+		return "bool"
+	case "0x09":
+		return "time.Time"
+	case "0x0E":
+		return "string"
+	case "0x10":
+		return "int32"
+	case "0x12":
+		return "int64"
+	case "0x13":
+		return "bson.Decimal"
+	default:
+		return "interface{}"
+	}
+}
+
+type valid struct {
+	Description   string `json:"description"`
+	Bson          string `json:"bson"`
+	CanonicalBson string `json:"canonical_bson"`
+
+	Name       string
+	StructTest bool
+	TestDef    *testDef
+}
+
+type decodeError struct {
+	Description string `json:"description"`
+	Bson        string `json:"bson"`
+
+	Name string
+}

vendor/github.com/google/btree/btree_mem.go

+// Copyright 2014 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build ignore
+
+// This binary compares memory usage between btree and gollrb.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"math/rand"
+	"runtime"
+	"time"
+
+	"github.com/google/btree"
+	"github.com/petar/GoLLRB/llrb"
+)
+
+var (
+	size   = flag.Int("size", 1000000, "size of the tree to build")
+	degree = flag.Int("degree", 8, "degree of btree")
+	gollrb = flag.Bool("llrb", false, "use llrb instead of btree")
+)
+
+func main() {
+	flag.Parse()
+	vals := rand.Perm(*size)
+	var t, v interface{}
+	v = vals
+	var stats runtime.MemStats
+	for i := 0; i < 10; i++ {
+		runtime.GC()
+	}
+	fmt.Println("-------- BEFORE ----------")
+	runtime.ReadMemStats(&stats)
+	fmt.Printf("%+v\n", stats)
+	start := time.Now()
+	if *gollrb {
+		tr := llrb.New()
+		for _, v := range vals {
+			tr.ReplaceOrInsert(llrb.Int(v))
+		}
+		t = tr // keep it around
+	} else {
+		tr := btree.New(*degree)
+		for _, v := range vals {
+			tr.ReplaceOrInsert(btree.Int(v))
+		}
+		t = tr // keep it around
+	}
+	fmt.Printf("%v inserts in %v\n", *size, time.Since(start))
+	fmt.Println("-------- AFTER ----------")
+	runtime.ReadMemStats(&stats)
+	fmt.Printf("%+v\n", stats)
+	for i := 0; i < 10; i++ {
+		runtime.GC()
+	}
+	fmt.Println("-------- AFTER GC ----------")
+	runtime.ReadMemStats(&stats)
+	fmt.Printf("%+v\n", stats)
+	if t == v {
+		fmt.Println("to make sure vals and tree aren't GC'd")
+	}
+}

vendor/github.com/google/certificate-transparency-go/x509/root_darwin_arm_gen.go

+// Copyright 2015 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.
+
+// +build ignore
+
+// Generates root_darwin_armx.go.
+//
+// As of iOS 8, there is no API for querying the system trusted X.509 root
+// certificates. We could use SecTrustEvaluate to verify that a trust chain
+// exists for a certificate, but the x509 API requires returning the entire
+// chain.
+//
+// Apple publishes the list of trusted root certificates for iOS on
+// support.apple.com. So we parse the list and extract the certificates from
+// an OS X machine and embed them into the x509 package.
+package main
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/pem"
+	"flag"
+	"fmt"
+	"go/format"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os/exec"
+	"regexp"
+	"strings"
+
+	"github.com/google/certificate-transparency-go/x509"
+)
+
+var output = flag.String("output", "root_darwin_armx.go", "file name to write")
+
+func main() {
+	certs, err := selectCerts()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	buf := new(bytes.Buffer)
+
+	fmt.Fprintf(buf, "// Code generated by root_darwin_arm_gen --output %s; DO NOT EDIT.\n", *output)
+	fmt.Fprintf(buf, "%s", header)
+
+	fmt.Fprintf(buf, "const systemRootsPEM = `\n")
+	for _, cert := range certs {
+		b := &pem.Block{
+			Type:  "CERTIFICATE",
+			Bytes: cert.Raw,
+		}
+		if err := pem.Encode(buf, b); err != nil {
+			log.Fatal(err)
+		}
+	}
+	fmt.Fprintf(buf, "`")
+
+	source, err := format.Source(buf.Bytes())
+	if err != nil {
+		log.Fatal("source format error:", err)
+	}
+	if err := ioutil.WriteFile(*output, source, 0644); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func selectCerts() ([]*x509.Certificate, error) {
+	ids, err := fetchCertIDs()
+	if err != nil {
+		return nil, err
+	}
+
+	scerts, err := sysCerts()
+	if err != nil {
+		return nil, err
+	}
+
+	var certs []*x509.Certificate
+	for _, id := range ids {
+		if c, ok := scerts[id.fingerprint]; ok {
+			certs = append(certs, c)
+		} else {
+			fmt.Printf("WARNING: cannot find certificate: %s (fingerprint: %s)\n", id.name, id.fingerprint)
+		}
+	}
+	return certs, nil
+}
+
+func sysCerts() (certs map[string]*x509.Certificate, err error) {
+	cmd := exec.Command("/usr/bin/security", "find-certificate", "-a", "-p", "/System/Library/Keychains/SystemRootCertificates.keychain")
+	data, err := cmd.Output()
+	if err != nil {
+		return nil, err
+	}
+	certs = make(map[string]*x509.Certificate)
+	for len(data) > 0 {
+		var block *pem.Block
+		block, data = pem.Decode(data)
+		if block == nil {
+			break
+		}
+		if block.Type != "CERTIFICATE" || len(block.Headers) != 0 {
+			continue
+		}
+
+		cert, err := x509.ParseCertificate(block.Bytes)
+		if err != nil {
+			continue
+		}
+
+		fingerprint := sha256.Sum256(cert.Raw)
+		certs[hex.EncodeToString(fingerprint[:])] = cert
+	}
+	return certs, nil
+}
+
+type certID struct {
+	name        string
+	fingerprint string
+}
+
+// fetchCertIDs fetches IDs of iOS X509 certificates from apple.com.
+func fetchCertIDs() ([]certID, error) {
+	// Download the iOS 11 support page. The index for all iOS versions is here:
+	// https://support.apple.com/en-us/HT204132
+	resp, err := http.Get("https://support.apple.com/en-us/HT208125")
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	text := string(body)
+	text = text[strings.Index(text, "<div id=trusted"):]
+	text = text[:strings.Index(text, "</div>")]
+
+	var ids []certID
+	cols := make(map[string]int)
+	for i, rowmatch := range regexp.MustCompile("(?s)<tr>(.*?)</tr>").FindAllStringSubmatch(text, -1) {
+		row := rowmatch[1]
+		if i == 0 {
+			// Parse table header row to extract column names
+			for i, match := range regexp.MustCompile("(?s)<th>(.*?)</th>").FindAllStringSubmatch(row, -1) {
+				cols[match[1]] = i
+			}
+			continue
+		}
+
+		values := regexp.MustCompile("(?s)<td>(.*?)</td>").FindAllStringSubmatch(row, -1)
+		name := values[cols["Certificate name"]][1]
+		fingerprint := values[cols["Fingerprint (SHA-256)"]][1]
+		fingerprint = strings.Replace(fingerprint, "<br>", "", -1)
+		fingerprint = strings.Replace(fingerprint, "\n", "", -1)
+		fingerprint = strings.Replace(fingerprint, " ", "", -1)
+		fingerprint = strings.ToLower(fingerprint)
+
+		ids = append(ids, certID{
+			name:        name,
+			fingerprint: fingerprint,
+		})
+	}
+	return ids, nil
+}
+
+const header = `
+// Copyright 2015 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.
+
+// +build cgo
+// +build darwin
+// +build arm arm64 ios
+
+package x509
+
+func loadSystemRoots() (*CertPool, error) {
+	p := NewCertPool()
+	p.AppendCertsFromPEM([]byte(systemRootsPEM))
+	return p, nil
+}
+`

vendor/github.com/google/certificate-transparency-go/x509/x509_test_import.go

+// 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.
+
+// +build ignore
+
+// This file is run by the x509 tests to ensure that a program with minimal
+// imports can sign certificates without errors resulting from missing hash
+// functions.
+package main
+
+import (
+	"crypto/rand"
+	// START CT CHANGES
+	"github.com/google/certificate-transparency-go/x509"
+	"github.com/google/certificate-transparency-go/x509/pkix"
+	// END CT CHANGES
+	"encoding/pem"
+	"math/big"
+	"time"
+)
+
+func main() {
+	block, _ := pem.Decode([]byte(pemPrivateKey))
+	rsaPriv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+	if err != nil {
+		panic("Failed to parse private key: " + err.Error())
+	}
+
+	template := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			CommonName:   "test",
+			Organization: []string{"Σ Acme Co"},
+		},
+		NotBefore: time.Unix(1000, 0),
+		NotAfter:  time.Unix(100000, 0),
+		KeyUsage:  x509.KeyUsageCertSign,
+	}
+
+	if _, err = x509.CreateCertificate(rand.Reader, &template, &template, &rsaPriv.PublicKey, rsaPriv); err != nil {
+		panic("failed to create certificate with basic imports: " + err.Error())
+	}
+}
+
+var pemPrivateKey = `-----BEGIN RSA PRIVATE KEY-----
+MIIBOgIBAAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0
+fd7Ai2KW5ToIwzFofvJcS/STa6HA5gQenRUCAwEAAQJBAIq9amn00aS0h/CrjXqu
+/ThglAXJmZhOMPVn4eiu7/ROixi9sex436MaVeMqSNf7Ex9a8fRNfWss7Sqd9eWu
+RTUCIQDasvGASLqmjeffBNLTXV2A5g4t+kLVCpsEIZAycV5GswIhANEPLmax0ME/
+EO+ZJ79TJKN5yiGBRsv5yvx5UiHxajEXAiAhAol5N4EUyq6I9w1rYdhPMGpLfk7A
+IU2snfRJ6Nq2CQIgFrPsWRCkV+gOYcajD17rEqmuLrdIRexpg8N1DOSXoJ8CIGlS
+tAboUGBxTDq3ZroNism3DaMIbKPyYrAqhKov1h5V
+-----END RSA PRIVATE KEY-----
+`

vendor/github.com/lib/pq/oid/gen.go

+// +build ignore
+
+// Generate the table of OID values
+// Run with 'go run gen.go'.
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	_ "github.com/lib/pq"
+)
+
+// OID represent a postgres Object Identifier Type.
+type OID struct {
+	ID   int
+	Type string
+}
+
+// Name returns an upper case version of the oid type.
+func (o OID) Name() string {
+	return strings.ToUpper(o.Type)
+}
+
+func main() {
+	datname := os.Getenv("PGDATABASE")
+	sslmode := os.Getenv("PGSSLMODE")
+
+	if datname == "" {
+		os.Setenv("PGDATABASE", "pqgotest")
+	}
+
+	if sslmode == "" {
+		os.Setenv("PGSSLMODE", "disable")
+	}
+
+	db, err := sql.Open("postgres", "")
+	if err != nil {
+		log.Fatal(err)
+	}
+	rows, err := db.Query(`
+		SELECT typname, oid
+		FROM pg_type WHERE oid < 10000
+		ORDER BY oid;
+	`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	oids := make([]*OID, 0)
+	for rows.Next() {
+		var oid OID
+		if err = rows.Scan(&oid.Type, &oid.ID); err != nil {
+			log.Fatal(err)
+		}
+		oids = append(oids, &oid)
+	}
+	if err = rows.Err(); err != nil {
+		log.Fatal(err)
+	}
+	cmd := exec.Command("gofmt")
+	cmd.Stderr = os.Stderr
+	w, err := cmd.StdinPipe()
+	if err != nil {
+		log.Fatal(err)
+	}
+	f, err := os.Create("types.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	cmd.Stdout = f
+	err = cmd.Start()
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Fprintln(w, "// Code generated by gen.go. DO NOT EDIT.")
+	fmt.Fprintln(w, "\npackage oid")
+	fmt.Fprintln(w, "const (")
+	for _, oid := range oids {
+		fmt.Fprintf(w, "T_%s Oid = %d\n", oid.Type, oid.ID)
+	}
+	fmt.Fprintln(w, ")")
+	fmt.Fprintln(w, "var TypeName = map[Oid]string{")
+	for _, oid := range oids {
+		fmt.Fprintf(w, "T_%s: \"%s\",\n", oid.Type, oid.Name())
+	}
+	fmt.Fprintln(w, "}")
+	w.Close()
+	cmd.Wait()
+}

vendor/github.com/miekg/dns/duplicate_generate.go

+//+build ignore
+
+// types_generate.go is meant to run with go generate. It will use
+// go/{importer,types} to track down all the RR struct types. Then for each type
+// it will generate conversion tables (TypeToRR and TypeToString) and banal
+// methods (len, Header, copy) based on the struct tags. The generated source is
+// written to ztypes.go, and is meant to be checked into git.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/format"
+	"go/importer"
+	"go/types"
+	"log"
+	"os"
+)
+
+var packageHdr = `
+// Code generated by "go run duplicate_generate.go"; DO NOT EDIT.
+
+package dns
+
+`
+
+func getTypeStruct(t types.Type, scope *types.Scope) (*types.Struct, bool) {
+	st, ok := t.Underlying().(*types.Struct)
+	if !ok {
+		return nil, false
+	}
+	if st.Field(0).Type() == scope.Lookup("RR_Header").Type() {
+		return st, false
+	}
+	if st.Field(0).Anonymous() {
+		st, _ := getTypeStruct(st.Field(0).Type(), scope)
+		return st, true
+	}
+	return nil, false
+}
+
+func main() {
+	// Import and type-check the package
+	pkg, err := importer.Default().Import("github.com/miekg/dns")
+	fatalIfErr(err)
+	scope := pkg.Scope()
+
+	// Collect actual types (*X)
+	var namedTypes []string
+	for _, name := range scope.Names() {
+		o := scope.Lookup(name)
+		if o == nil || !o.Exported() {
+			continue
+		}
+
+		if st, _ := getTypeStruct(o.Type(), scope); st == nil {
+			continue
+		}
+
+		if name == "PrivateRR" || name == "OPT" {
+			continue
+		}
+
+		namedTypes = append(namedTypes, o.Name())
+	}
+
+	b := &bytes.Buffer{}
+	b.WriteString(packageHdr)
+
+	// Generate the duplicate check for each type.
+	fmt.Fprint(b, "// isDuplicate() functions\n\n")
+	for _, name := range namedTypes {
+
+		o := scope.Lookup(name)
+		st, isEmbedded := getTypeStruct(o.Type(), scope)
+		if isEmbedded {
+			continue
+		}
+		fmt.Fprintf(b, "func (r1 *%s) isDuplicate(_r2 RR) bool {\n", name)
+		fmt.Fprintf(b, "r2, ok := _r2.(*%s)\n", name)
+		fmt.Fprint(b, "if !ok { return false }\n")
+		fmt.Fprint(b, "_ = r2\n")
+		for i := 1; i < st.NumFields(); i++ {
+			field := st.Field(i).Name()
+			o2 := func(s string) { fmt.Fprintf(b, s+"\n", field, field) }
+			o3 := func(s string) { fmt.Fprintf(b, s+"\n", field, field, field) }
+
+			// For some reason, a and aaaa don't pop up as *types.Slice here (mostly like because the are
+			// *indirectly* defined as a slice in the net package).
+			if _, ok := st.Field(i).Type().(*types.Slice); ok {
+				o2("if len(r1.%s) != len(r2.%s) {\nreturn false\n}")
+
+				if st.Tag(i) == `dns:"cdomain-name"` || st.Tag(i) == `dns:"domain-name"` {
+					o3(`for i := 0; i < len(r1.%s); i++ {
+						if !isDulicateName(r1.%s[i], r2.%s[i]) {
+							return false
+						}
+					}`)
+
+					continue
+				}
+
+				o3(`for i := 0; i < len(r1.%s); i++ {
+					if r1.%s[i] != r2.%s[i] {
+						return false
+					}
+				}`)
+
+				continue
+			}
+
+			switch st.Tag(i) {
+			case `dns:"-"`:
+				// ignored
+			case `dns:"a"`, `dns:"aaaa"`:
+				o2("if !r1.%s.Equal(r2.%s) {\nreturn false\n}")
+			case `dns:"cdomain-name"`, `dns:"domain-name"`:
+				o2("if !isDulicateName(r1.%s, r2.%s) {\nreturn false\n}")
+			default:
+				o2("if r1.%s != r2.%s {\nreturn false\n}")
+			}
+		}
+		fmt.Fprintf(b, "return true\n}\n\n")
+	}
+
+	// gofmt
+	res, err := format.Source(b.Bytes())
+	if err != nil {
+		b.WriteTo(os.Stderr)
+		log.Fatal(err)
+	}
+
+	// write result
+	f, err := os.Create("zduplicate.go")
+	fatalIfErr(err)
+	defer f.Close()
+	f.Write(res)
+}
+
+func fatalIfErr(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}

vendor/github.com/miekg/dns/msg_generate.go

+//+build ignore
+
+// msg_generate.go is meant to run with go generate. It will use
+// go/{importer,types} to track down all the RR struct types. Then for each type
+// it will generate pack/unpack methods based on the struct tags. The generated source is
+// written to zmsg.go, and is meant to be checked into git.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/format"
+	"go/importer"
+	"go/types"
+	"log"
+	"os"
+	"strings"
+)
+
+var packageHdr = `
+// Code generated by "go run msg_generate.go"; DO NOT EDIT.
+
+package dns
+
+`
+
+// getTypeStruct will take a type and the package scope, and return the
+// (innermost) struct if the type is considered a RR type (currently defined as
+// those structs beginning with a RR_Header, could be redefined as implementing
+// the RR interface). The bool return value indicates if embedded structs were
+// resolved.
+func getTypeStruct(t types.Type, scope *types.Scope) (*types.Struct, bool) {
+	st, ok := t.Underlying().(*types.Struct)
+	if !ok {
+		return nil, false
+	}
+	if st.Field(0).Type() == scope.Lookup("RR_Header").Type() {
+		return st, false
+	}
+	if st.Field(0).Anonymous() {
+		st, _ := getTypeStruct(st.Field(0).Type(), scope)
+		return st, true
+	}
+	return nil, false
+}
+
+func main() {
+	// Import and type-check the package
+	pkg, err := importer.Default().Import("github.com/miekg/dns")
+	fatalIfErr(err)
+	scope := pkg.Scope()
+
+	// Collect actual types (*X)
+	var namedTypes []string
+	for _, name := range scope.Names() {
+		o := scope.Lookup(name)
+		if o == nil || !o.Exported() {
+			continue
+		}
+		if st, _ := getTypeStruct(o.Type(), scope); st == nil {
+			continue
+		}
+		if name == "PrivateRR" {
+			continue
+		}
+
+		// Check if corresponding TypeX exists
+		if scope.Lookup("Type"+o.Name()) == nil && o.Name() != "RFC3597" {
+			log.Fatalf("Constant Type%s does not exist.", o.Name())
+		}
+
+		namedTypes = append(namedTypes, o.Name())
+	}
+
+	b := &bytes.Buffer{}
+	b.WriteString(packageHdr)
+
+	fmt.Fprint(b, "// pack*() functions\n\n")
+	for _, name := range namedTypes {
+		o := scope.Lookup(name)
+		st, _ := getTypeStruct(o.Type(), scope)
+
+		fmt.Fprintf(b, "func (rr *%s) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {\n", name)
+		for i := 1; i < st.NumFields(); i++ {
+			o := func(s string) {
+				fmt.Fprintf(b, s, st.Field(i).Name())
+				fmt.Fprint(b, `if err != nil {
+return off, err
+}
+`)
+			}
+
+			if _, ok := st.Field(i).Type().(*types.Slice); ok {
+				switch st.Tag(i) {
+				case `dns:"-"`: // ignored
+				case `dns:"txt"`:
+					o("off, err = packStringTxt(rr.%s, msg, off)\n")
+				case `dns:"opt"`:
+					o("off, err = packDataOpt(rr.%s, msg, off)\n")
+				case `dns:"nsec"`:
+					o("off, err = packDataNsec(rr.%s, msg, off)\n")
+				case `dns:"domain-name"`:
+					o("off, err = packDataDomainNames(rr.%s, msg, off, compression, false)\n")
+				default:
+					log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+				}
+				continue
+			}
+
+			switch {
+			case st.Tag(i) == `dns:"-"`: // ignored
+			case st.Tag(i) == `dns:"cdomain-name"`:
+				o("off, err = packDomainName(rr.%s, msg, off, compression, compress)\n")
+			case st.Tag(i) == `dns:"domain-name"`:
+				o("off, err = packDomainName(rr.%s, msg, off, compression, false)\n")
+			case st.Tag(i) == `dns:"a"`:
+				o("off, err = packDataA(rr.%s, msg, off)\n")
+			case st.Tag(i) == `dns:"aaaa"`:
+				o("off, err = packDataAAAA(rr.%s, msg, off)\n")
+			case st.Tag(i) == `dns:"uint48"`:
+				o("off, err = packUint48(rr.%s, msg, off)\n")
+			case st.Tag(i) == `dns:"txt"`:
+				o("off, err = packString(rr.%s, msg, off)\n")
+
+			case strings.HasPrefix(st.Tag(i), `dns:"size-base32`): // size-base32 can be packed just like base32
+				fallthrough
+			case st.Tag(i) == `dns:"base32"`:
+				o("off, err = packStringBase32(rr.%s, msg, off)\n")
+
+			case strings.HasPrefix(st.Tag(i), `dns:"size-base64`): // size-base64 can be packed just like base64
+				fallthrough
+			case st.Tag(i) == `dns:"base64"`:
+				o("off, err = packStringBase64(rr.%s, msg, off)\n")
+
+			case strings.HasPrefix(st.Tag(i), `dns:"size-hex:SaltLength`):
+				// directly write instead of using o() so we get the error check in the correct place
+				field := st.Field(i).Name()
+				fmt.Fprintf(b, `// Only pack salt if value is not "-", i.e. empty
+if rr.%s != "-" {
+  off, err = packStringHex(rr.%s, msg, off)
+  if err != nil {
+    return off, err
+  }
+}
+`, field, field)
+				continue
+			case strings.HasPrefix(st.Tag(i), `dns:"size-hex`): // size-hex can be packed just like hex
+				fallthrough
+			case st.Tag(i) == `dns:"hex"`:
+				o("off, err = packStringHex(rr.%s, msg, off)\n")
+			case st.Tag(i) == `dns:"any"`:
+				o("off, err = packStringAny(rr.%s, msg, off)\n")
+			case st.Tag(i) == `dns:"octet"`:
+				o("off, err = packStringOctet(rr.%s, msg, off)\n")
+			case st.Tag(i) == "":
+				switch st.Field(i).Type().(*types.Basic).Kind() {
+				case types.Uint8:
+					o("off, err = packUint8(rr.%s, msg, off)\n")
+				case types.Uint16:
+					o("off, err = packUint16(rr.%s, msg, off)\n")
+				case types.Uint32:
+					o("off, err = packUint32(rr.%s, msg, off)\n")
+				case types.Uint64:
+					o("off, err = packUint64(rr.%s, msg, off)\n")
+				case types.String:
+					o("off, err = packString(rr.%s, msg, off)\n")
+				default:
+					log.Fatalln(name, st.Field(i).Name())
+				}
+			default:
+				log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+			}
+		}
+		fmt.Fprintln(b, "return off, nil }\n")
+	}
+
+	fmt.Fprint(b, "// unpack*() functions\n\n")
+	for _, name := range namedTypes {
+		o := scope.Lookup(name)
+		st, _ := getTypeStruct(o.Type(), scope)
+
+		fmt.Fprintf(b, "func (rr *%s) unpack(msg []byte, off int) (off1 int, err error) {\n", name)
+		fmt.Fprint(b, `rdStart := off
+_ = rdStart
+
+`)
+		for i := 1; i < st.NumFields(); i++ {
+			o := func(s string) {
+				fmt.Fprintf(b, s, st.Field(i).Name())
+				fmt.Fprint(b, `if err != nil {
+return off, err
+}
+`)
+			}
+
+			// size-* are special, because they reference a struct member we should use for the length.
+			if strings.HasPrefix(st.Tag(i), `dns:"size-`) {
+				structMember := structMember(st.Tag(i))
+				structTag := structTag(st.Tag(i))
+				switch structTag {
+				case "hex":
+					fmt.Fprintf(b, "rr.%s, off, err = unpackStringHex(msg, off, off + int(rr.%s))\n", st.Field(i).Name(), structMember)
+				case "base32":
+					fmt.Fprintf(b, "rr.%s, off, err = unpackStringBase32(msg, off, off + int(rr.%s))\n", st.Field(i).Name(), structMember)
+				case "base64":
+					fmt.Fprintf(b, "rr.%s, off, err = unpackStringBase64(msg, off, off + int(rr.%s))\n", st.Field(i).Name(), structMember)
+				default:
+					log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+				}
+				fmt.Fprint(b, `if err != nil {
+return off, err
+}
+`)
+				continue
+			}
+
+			if _, ok := st.Field(i).Type().(*types.Slice); ok {
+				switch st.Tag(i) {
+				case `dns:"-"`: // ignored
+				case `dns:"txt"`:
+					o("rr.%s, off, err = unpackStringTxt(msg, off)\n")
+				case `dns:"opt"`:
+					o("rr.%s, off, err = unpackDataOpt(msg, off)\n")
+				case `dns:"nsec"`:
+					o("rr.%s, off, err = unpackDataNsec(msg, off)\n")
+				case `dns:"domain-name"`:
+					o("rr.%s, off, err = unpackDataDomainNames(msg, off, rdStart + int(rr.Hdr.Rdlength))\n")
+				default:
+					log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+				}
+				continue
+			}
+
+			switch st.Tag(i) {
+			case `dns:"-"`: // ignored
+			case `dns:"cdomain-name"`:
+				fallthrough
+			case `dns:"domain-name"`:
+				o("rr.%s, off, err = UnpackDomainName(msg, off)\n")
+			case `dns:"a"`:
+				o("rr.%s, off, err = unpackDataA(msg, off)\n")
+			case `dns:"aaaa"`:
+				o("rr.%s, off, err = unpackDataAAAA(msg, off)\n")
+			case `dns:"uint48"`:
+				o("rr.%s, off, err = unpackUint48(msg, off)\n")
+			case `dns:"txt"`:
+				o("rr.%s, off, err = unpackString(msg, off)\n")
+			case `dns:"base32"`:
+				o("rr.%s, off, err = unpackStringBase32(msg, off, rdStart + int(rr.Hdr.Rdlength))\n")
+			case `dns:"base64"`:
+				o("rr.%s, off, err = unpackStringBase64(msg, off, rdStart + int(rr.Hdr.Rdlength))\n")
+			case `dns:"hex"`:
+				o("rr.%s, off, err = unpackStringHex(msg, off, rdStart + int(rr.Hdr.Rdlength))\n")
+			case `dns:"any"`:
+				o("rr.%s, off, err = unpackStringAny(msg, off, rdStart + int(rr.Hdr.Rdlength))\n")
+			case `dns:"octet"`:
+				o("rr.%s, off, err = unpackStringOctet(msg, off)\n")
+			case "":
+				switch st.Field(i).Type().(*types.Basic).Kind() {
+				case types.Uint8:
+					o("rr.%s, off, err = unpackUint8(msg, off)\n")
+				case types.Uint16:
+					o("rr.%s, off, err = unpackUint16(msg, off)\n")
+				case types.Uint32:
+					o("rr.%s, off, err = unpackUint32(msg, off)\n")
+				case types.Uint64:
+					o("rr.%s, off, err = unpackUint64(msg, off)\n")
+				case types.String:
+					o("rr.%s, off, err = unpackString(msg, off)\n")
+				default:
+					log.Fatalln(name, st.Field(i).Name())
+				}
+			default:
+				log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+			}
+			// If we've hit len(msg) we return without error.
+			if i < st.NumFields()-1 {
+				fmt.Fprintf(b, `if off == len(msg) {
+return off, nil
+	}
+`)
+			}
+		}
+		fmt.Fprintf(b, "return off, nil }\n\n")
+	}
+
+	// gofmt
+	res, err := format.Source(b.Bytes())
+	if err != nil {
+		b.WriteTo(os.Stderr)
+		log.Fatal(err)
+	}
+
+	// write result
+	f, err := os.Create("zmsg.go")
+	fatalIfErr(err)
+	defer f.Close()
+	f.Write(res)
+}
+
+// structMember will take a tag like dns:"size-base32:SaltLength" and return the last part of this string.
+func structMember(s string) string {
+	fields := strings.Split(s, ":")
+	if len(fields) == 0 {
+		return ""
+	}
+	f := fields[len(fields)-1]
+	// f should have a closing "
+	if len(f) > 1 {
+		return f[:len(f)-1]
+	}
+	return f
+}
+
+// structTag will take a tag like dns:"size-base32:SaltLength" and return base32.
+func structTag(s string) string {
+	fields := strings.Split(s, ":")
+	if len(fields) < 2 {
+		return ""
+	}
+	return fields[1][len("\"size-"):]
+}
+
+func fatalIfErr(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}

vendor/github.com/miekg/dns/types_generate.go

+//+build ignore
+
+// types_generate.go is meant to run with go generate. It will use
+// go/{importer,types} to track down all the RR struct types. Then for each type
+// it will generate conversion tables (TypeToRR and TypeToString) and banal
+// methods (len, Header, copy) based on the struct tags. The generated source is
+// written to ztypes.go, and is meant to be checked into git.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/format"
+	"go/importer"
+	"go/types"
+	"log"
+	"os"
+	"strings"
+	"text/template"
+)
+
+var skipLen = map[string]struct{}{
+	"NSEC":  {},
+	"NSEC3": {},
+	"OPT":   {},
+	"CSYNC": {},
+}
+
+var packageHdr = `
+// Code generated by "go run types_generate.go"; DO NOT EDIT.
+
+package dns
+
+import (
+	"encoding/base64"
+	"net"
+)
+
+`
+
+var TypeToRR = template.Must(template.New("TypeToRR").Parse(`
+// TypeToRR is a map of constructors for each RR type.
+var TypeToRR = map[uint16]func() RR{
+{{range .}}{{if ne . "RFC3597"}}  Type{{.}}:  func() RR { return new({{.}}) },
+{{end}}{{end}}                    }
+
+`))
+
+var typeToString = template.Must(template.New("typeToString").Parse(`
+// TypeToString is a map of strings for each RR type.
+var TypeToString = map[uint16]string{
+{{range .}}{{if ne . "NSAPPTR"}}  Type{{.}}: "{{.}}",
+{{end}}{{end}}                    TypeNSAPPTR:    "NSAP-PTR",
+}
+
+`))
+
+var headerFunc = template.Must(template.New("headerFunc").Parse(`
+{{range .}}  func (rr *{{.}}) Header() *RR_Header { return &rr.Hdr }
+{{end}}
+
+`))
+
+// getTypeStruct will take a type and the package scope, and return the
+// (innermost) struct if the type is considered a RR type (currently defined as
+// those structs beginning with a RR_Header, could be redefined as implementing
+// the RR interface). The bool return value indicates if embedded structs were
+// resolved.
+func getTypeStruct(t types.Type, scope *types.Scope) (*types.Struct, bool) {
+	st, ok := t.Underlying().(*types.Struct)
+	if !ok {
+		return nil, false
+	}
+	if st.Field(0).Type() == scope.Lookup("RR_Header").Type() {
+		return st, false
+	}
+	if st.Field(0).Anonymous() {
+		st, _ := getTypeStruct(st.Field(0).Type(), scope)
+		return st, true
+	}
+	return nil, false
+}
+
+func main() {
+	// Import and type-check the package
+	pkg, err := importer.Default().Import("github.com/miekg/dns")
+	fatalIfErr(err)
+	scope := pkg.Scope()
+
+	// Collect constants like TypeX
+	var numberedTypes []string
+	for _, name := range scope.Names() {
+		o := scope.Lookup(name)
+		if o == nil || !o.Exported() {
+			continue
+		}
+		b, ok := o.Type().(*types.Basic)
+		if !ok || b.Kind() != types.Uint16 {
+			continue
+		}
+		if !strings.HasPrefix(o.Name(), "Type") {
+			continue
+		}
+		name := strings.TrimPrefix(o.Name(), "Type")
+		if name == "PrivateRR" {
+			continue
+		}
+		numberedTypes = append(numberedTypes, name)
+	}
+
+	// Collect actual types (*X)
+	var namedTypes []string
+	for _, name := range scope.Names() {
+		o := scope.Lookup(name)
+		if o == nil || !o.Exported() {
+			continue
+		}
+		if st, _ := getTypeStruct(o.Type(), scope); st == nil {
+			continue
+		}
+		if name == "PrivateRR" {
+			continue
+		}
+
+		// Check if corresponding TypeX exists
+		if scope.Lookup("Type"+o.Name()) == nil && o.Name() != "RFC3597" {
+			log.Fatalf("Constant Type%s does not exist.", o.Name())
+		}
+
+		namedTypes = append(namedTypes, o.Name())
+	}
+
+	b := &bytes.Buffer{}
+	b.WriteString(packageHdr)
+
+	// Generate TypeToRR
+	fatalIfErr(TypeToRR.Execute(b, namedTypes))
+
+	// Generate typeToString
+	fatalIfErr(typeToString.Execute(b, numberedTypes))
+
+	// Generate headerFunc
+	fatalIfErr(headerFunc.Execute(b, namedTypes))
+
+	// Generate len()
+	fmt.Fprint(b, "// len() functions\n")
+	for _, name := range namedTypes {
+		if _, ok := skipLen[name]; ok {
+			continue
+		}
+		o := scope.Lookup(name)
+		st, isEmbedded := getTypeStruct(o.Type(), scope)
+		if isEmbedded {
+			continue
+		}
+		fmt.Fprintf(b, "func (rr *%s) len(off int, compression map[string]struct{}) int {\n", name)
+		fmt.Fprintf(b, "l := rr.Hdr.len(off, compression)\n")
+		for i := 1; i < st.NumFields(); i++ {
+			o := func(s string) { fmt.Fprintf(b, s, st.Field(i).Name()) }
+
+			if _, ok := st.Field(i).Type().(*types.Slice); ok {
+				switch st.Tag(i) {
+				case `dns:"-"`:
+					// ignored
+				case `dns:"cdomain-name"`:
+					o("for _, x := range rr.%s { l += domainNameLen(x, off+l, compression, true) }\n")
+				case `dns:"domain-name"`:
+					o("for _, x := range rr.%s { l += domainNameLen(x, off+l, compression, false) }\n")
+				case `dns:"txt"`:
+					o("for _, x := range rr.%s { l += len(x) + 1 }\n")
+				default:
+					log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+				}
+				continue
+			}
+
+			switch {
+			case st.Tag(i) == `dns:"-"`:
+				// ignored
+			case st.Tag(i) == `dns:"cdomain-name"`:
+				o("l += domainNameLen(rr.%s, off+l, compression, true)\n")
+			case st.Tag(i) == `dns:"domain-name"`:
+				o("l += domainNameLen(rr.%s, off+l, compression, false)\n")
+			case st.Tag(i) == `dns:"octet"`:
+				o("l += len(rr.%s)\n")
+			case strings.HasPrefix(st.Tag(i), `dns:"size-base64`):
+				fallthrough
+			case st.Tag(i) == `dns:"base64"`:
+				o("l += base64.StdEncoding.DecodedLen(len(rr.%s))\n")
+			case strings.HasPrefix(st.Tag(i), `dns:"size-hex:`): // this has an extra field where the length is stored
+				o("l += len(rr.%s)/2\n")
+			case strings.HasPrefix(st.Tag(i), `dns:"size-hex`):
+				fallthrough
+			case st.Tag(i) == `dns:"hex"`:
+				o("l += len(rr.%s)/2 + 1\n")
+			case st.Tag(i) == `dns:"any"`:
+				o("l += len(rr.%s)\n")
+			case st.Tag(i) == `dns:"a"`:
+				o("l += net.IPv4len // %s\n")
+			case st.Tag(i) == `dns:"aaaa"`:
+				o("l += net.IPv6len // %s\n")
+			case st.Tag(i) == `dns:"txt"`:
+				o("for _, t := range rr.%s { l += len(t) + 1 }\n")
+			case st.Tag(i) == `dns:"uint48"`:
+				o("l += 6 // %s\n")
+			case st.Tag(i) == "":
+				switch st.Field(i).Type().(*types.Basic).Kind() {
+				case types.Uint8:
+					o("l++ // %s\n")
+				case types.Uint16:
+					o("l += 2 // %s\n")
+				case types.Uint32:
+					o("l += 4 // %s\n")
+				case types.Uint64:
+					o("l += 8 // %s\n")
+				case types.String:
+					o("l += len(rr.%s) + 1\n")
+				default:
+					log.Fatalln(name, st.Field(i).Name())
+				}
+			default:
+				log.Fatalln(name, st.Field(i).Name(), st.Tag(i))
+			}
+		}
+		fmt.Fprintf(b, "return l }\n")
+	}
+
+	// Generate copy()
+	fmt.Fprint(b, "// copy() functions\n")
+	for _, name := range namedTypes {
+		o := scope.Lookup(name)
+		st, isEmbedded := getTypeStruct(o.Type(), scope)
+		if isEmbedded {
+			continue
+		}
+		fmt.Fprintf(b, "func (rr *%s) copy() RR {\n", name)
+		fields := []string{"rr.Hdr"}
+		for i := 1; i < st.NumFields(); i++ {
+			f := st.Field(i).Name()
+			if sl, ok := st.Field(i).Type().(*types.Slice); ok {
+				t := sl.Underlying().String()
+				t = strings.TrimPrefix(t, "[]")
+				if strings.Contains(t, ".") {
+					splits := strings.Split(t, ".")
+					t = splits[len(splits)-1]
+				}
+				// For the EDNS0 interface (used in the OPT RR), we need to call the copy method on each element.
+				if t == "EDNS0" {
+					fmt.Fprintf(b, "%s := make([]%s, len(rr.%s));\nfor i,e := range rr.%s {\n %s[i] = e.copy()\n}\n",
+						f, t, f, f, f)
+					fields = append(fields, f)
+					continue
+				}
+				fmt.Fprintf(b, "%s := make([]%s, len(rr.%s)); copy(%s, rr.%s)\n",
+					f, t, f, f, f)
+				fields = append(fields, f)
+				continue
+			}
+			if st.Field(i).Type().String() == "net.IP" {
+				fields = append(fields, "copyIP(rr."+f+")")
+				continue
+			}
+			fields = append(fields, "rr."+f)
+		}
+		fmt.Fprintf(b, "return &%s{%s}\n", name, strings.Join(fields, ","))
+		fmt.Fprintf(b, "}\n")
+	}
+
+	// gofmt
+	res, err := format.Source(b.Bytes())
+	if err != nil {
+		b.WriteTo(os.Stderr)
+		log.Fatal(err)
+	}
+
+	// write result
+	f, err := os.Create("ztypes.go")
+	fatalIfErr(err)
+	defer f.Close()
+	f.Write(res)
+}
+
+func fatalIfErr(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}

vendor/golang.org/x/net/html/atom/gen.go

+// Copyright 2012 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.
+
+// +build ignore
+
+//go:generate go run gen.go
+//go:generate go run gen.go -test
+
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"go/format"
+	"io/ioutil"
+	"math/rand"
+	"os"
+	"sort"
+	"strings"
+)
+
+// identifier converts s to a Go exported identifier.
+// It converts "div" to "Div" and "accept-charset" to "AcceptCharset".
+func identifier(s string) string {
+	b := make([]byte, 0, len(s))
+	cap := true
+	for _, c := range s {
+		if c == '-' {
+			cap = true
+			continue
+		}
+		if cap && 'a' <= c && c <= 'z' {
+			c -= 'a' - 'A'
+		}
+		cap = false
+		b = append(b, byte(c))
+	}
+	return string(b)
+}
+
+var test = flag.Bool("test", false, "generate table_test.go")
+
+func genFile(name string, buf *bytes.Buffer) {
+	b, err := format.Source(buf.Bytes())
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	if err := ioutil.WriteFile(name, b, 0644); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	var all []string
+	all = append(all, elements...)
+	all = append(all, attributes...)
+	all = append(all, eventHandlers...)
+	all = append(all, extra...)
+	sort.Strings(all)
+
+	// uniq - lists have dups
+	w := 0
+	for _, s := range all {
+		if w == 0 || all[w-1] != s {
+			all[w] = s
+			w++
+		}
+	}
+	all = all[:w]
+
+	if *test {
+		var buf bytes.Buffer
+		fmt.Fprintln(&buf, "// Code generated by go generate gen.go; DO NOT EDIT.\n")
+		fmt.Fprintln(&buf, "//go:generate go run gen.go -test\n")
+		fmt.Fprintln(&buf, "package atom\n")
+		fmt.Fprintln(&buf, "var testAtomList = []string{")
+		for _, s := range all {
+			fmt.Fprintf(&buf, "\t%q,\n", s)
+		}
+		fmt.Fprintln(&buf, "}")
+
+		genFile("table_test.go", &buf)
+		return
+	}
+
+	// Find hash that minimizes table size.
+	var best *table
+	for i := 0; i < 1000000; i++ {
+		if best != nil && 1<<(best.k-1) < len(all) {
+			break
+		}
+		h := rand.Uint32()
+		for k := uint(0); k <= 16; k++ {
+			if best != nil && k >= best.k {
+				break
+			}
+			var t table
+			if t.init(h, k, all) {
+				best = &t
+				break
+			}
+		}
+	}
+	if best == nil {
+		fmt.Fprintf(os.Stderr, "failed to construct string table\n")
+		os.Exit(1)
+	}
+
+	// Lay out strings, using overlaps when possible.
+	layout := append([]string{}, all...)
+
+	// Remove strings that are substrings of other strings
+	for changed := true; changed; {
+		changed = false
+		for i, s := range layout {
+			if s == "" {
+				continue
+			}
+			for j, t := range layout {
+				if i != j && t != "" && strings.Contains(s, t) {
+					changed = true
+					layout[j] = ""
+				}
+			}
+		}
+	}
+
+	// Join strings where one suffix matches another prefix.
+	for {
+		// Find best i, j, k such that layout[i][len-k:] == layout[j][:k],
+		// maximizing overlap length k.
+		besti := -1
+		bestj := -1
+		bestk := 0
+		for i, s := range layout {
+			if s == "" {
+				continue
+			}
+			for j, t := range layout {
+				if i == j {
+					continue
+				}
+				for k := bestk + 1; k <= len(s) && k <= len(t); k++ {
+					if s[len(s)-k:] == t[:k] {
+						besti = i
+						bestj = j
+						bestk = k
+					}
+				}
+			}
+		}
+		if bestk > 0 {
+			layout[besti] += layout[bestj][bestk:]
+			layout[bestj] = ""
+			continue
+		}
+		break
+	}
+
+	text := strings.Join(layout, "")
+
+	atom := map[string]uint32{}
+	for _, s := range all {
+		off := strings.Index(text, s)
+		if off < 0 {
+			panic("lost string " + s)
+		}
+		atom[s] = uint32(off<<8 | len(s))
+	}
+
+	var buf bytes.Buffer
+	// Generate the Go code.
+	fmt.Fprintln(&buf, "// Code generated by go generate gen.go; DO NOT EDIT.\n")
+	fmt.Fprintln(&buf, "//go:generate go run gen.go\n")
+	fmt.Fprintln(&buf, "package atom\n\nconst (")
+
+	// compute max len
+	maxLen := 0
+	for _, s := range all {
+		if maxLen < len(s) {
+			maxLen = len(s)
+		}
+		fmt.Fprintf(&buf, "\t%s Atom = %#x\n", identifier(s), atom[s])
+	}
+	fmt.Fprintln(&buf, ")\n")
+
+	fmt.Fprintf(&buf, "const hash0 = %#x\n\n", best.h0)
+	fmt.Fprintf(&buf, "const maxAtomLen = %d\n\n", maxLen)
+
+	fmt.Fprintf(&buf, "var table = [1<<%d]Atom{\n", best.k)
+	for i, s := range best.tab {
+		if s == "" {
+			continue
+		}
+		fmt.Fprintf(&buf, "\t%#x: %#x, // %s\n", i, atom[s], s)
+	}
+	fmt.Fprintf(&buf, "}\n")
+	datasize := (1 << best.k) * 4
+
+	fmt.Fprintln(&buf, "const atomText =")
+	textsize := len(text)
+	for len(text) > 60 {
+		fmt.Fprintf(&buf, "\t%q +\n", text[:60])
+		text = text[60:]
+	}
+	fmt.Fprintf(&buf, "\t%q\n\n", text)
+
+	genFile("table.go", &buf)
+
+	fmt.Fprintf(os.Stdout, "%d atoms; %d string bytes + %d tables = %d total data\n", len(all), textsize, datasize, textsize+datasize)
+}
+
+type byLen []string
+
+func (x byLen) Less(i, j int) bool { return len(x[i]) > len(x[j]) }
+func (x byLen) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+func (x byLen) Len() int           { return len(x) }
+
+// fnv computes the FNV hash with an arbitrary starting value h.
+func fnv(h uint32, s string) uint32 {
+	for i := 0; i < len(s); i++ {
+		h ^= uint32(s[i])
+		h *= 16777619
+	}
+	return h
+}
+
+// A table represents an attempt at constructing the lookup table.
+// The lookup table uses cuckoo hashing, meaning that each string
+// can be found in one of two positions.
+type table struct {
+	h0   uint32
+	k    uint
+	mask uint32
+	tab  []string
+}
+
+// hash returns the two hashes for s.
+func (t *table) hash(s string) (h1, h2 uint32) {
+	h := fnv(t.h0, s)
+	h1 = h & t.mask
+	h2 = (h >> 16) & t.mask
+	return
+}
+
+// init initializes the table with the given parameters.
+// h0 is the initial hash value,
+// k is the number of bits of hash value to use, and
+// x is the list of strings to store in the table.
+// init returns false if the table cannot be constructed.
+func (t *table) init(h0 uint32, k uint, x []string) bool {
+	t.h0 = h0
+	t.k = k
+	t.tab = make([]string, 1<<k)
+	t.mask = 1<<k - 1
+	for _, s := range x {
+		if !t.insert(s) {
+			return false
+		}
+	}
+	return true
+}
+
+// insert inserts s in the table.
+func (t *table) insert(s string) bool {
+	h1, h2 := t.hash(s)
+	if t.tab[h1] == "" {
+		t.tab[h1] = s
+		return true
+	}
+	if t.tab[h2] == "" {
+		t.tab[h2] = s
+		return true
+	}
+	if t.push(h1, 0) {
+		t.tab[h1] = s
+		return true
+	}
+	if t.push(h2, 0) {
+		t.tab[h2] = s
+		return true
+	}
+	return false
+}
+
+// push attempts to push aside the entry in slot i.
+func (t *table) push(i uint32, depth int) bool {
+	if depth > len(t.tab) {
+		return false
+	}
+	s := t.tab[i]
+	h1, h2 := t.hash(s)
+	j := h1 + h2 - i
+	if t.tab[j] != "" && !t.push(j, depth+1) {
+		return false
+	}
+	t.tab[j] = s
+	return true
+}
+
+// The lists of element names and attribute keys were taken from
+// https://html.spec.whatwg.org/multipage/indices.html#index
+// as of the "HTML Living Standard - Last Updated 16 April 2018" version.
+
+// "command", "keygen" and "menuitem" have been removed from the spec,
+// but are kept here for backwards compatibility.
+var elements = []string{
+	"a",
+	"abbr",
+	"address",
+	"area",
+	"article",
+	"aside",
+	"audio",
+	"b",
+	"base",
+	"bdi",
+	"bdo",
+	"blockquote",
+	"body",
+	"br",
+	"button",
+	"canvas",
+	"caption",
+	"cite",
+	"code",
+	"col",
+	"colgroup",
+	"command",
+	"data",
+	"datalist",
+	"dd",
+	"del",
+	"details",
+	"dfn",
+	"dialog",
+	"div",
+	"dl",
+	"dt",
+	"em",
+	"embed",
+	"fieldset",
+	"figcaption",
+	"figure",
+	"footer",
+	"form",
+	"h1",
+	"h2",
+	"h3",
+	"h4",
+	"h5",
+	"h6",
+	"head",
+	"header",
+	"hgroup",
+	"hr",
+	"html",
+	"i",
+	"iframe",
+	"img",
+	"input",
+	"ins",
+	"kbd",
+	"keygen",
+	"label",
+	"legend",
+	"li",
+	"link",
+	"main",
+	"map",
+	"mark",
+	"menu",
+	"menuitem",
+	"meta",
+	"meter",
+	"nav",
+	"noscript",
+	"object",
+	"ol",
+	"optgroup",
+	"option",
+	"output",
+	"p",
+	"param",
+	"picture",
+	"pre",
+	"progress",
+	"q",
+	"rp",
+	"rt",
+	"ruby",
+	"s",
+	"samp",
+	"script",
+	"section",
+	"select",
+	"slot",
+	"small",
+	"source",
+	"span",
+	"strong",
+	"style",
+	"sub",
+	"summary",
+	"sup",
+	"table",
+	"tbody",
+	"td",
+	"template",
+	"textarea",
+	"tfoot",
+	"th",
+	"thead",
+	"time",
+	"title",
+	"tr",
+	"track",
+	"u",
+	"ul",
+	"var",
+	"video",
+	"wbr",
+}
+
+// https://html.spec.whatwg.org/multipage/indices.html#attributes-3
+//
+// "challenge", "command", "contextmenu", "dropzone", "icon", "keytype", "mediagroup",
+// "radiogroup", "spellcheck", "scoped", "seamless", "sortable" and "sorted" have been removed from the spec,
+// but are kept here for backwards compatibility.
+var attributes = []string{
+	"abbr",
+	"accept",
+	"accept-charset",
+	"accesskey",
+	"action",
+	"allowfullscreen",
+	"allowpaymentrequest",
+	"allowusermedia",
+	"alt",
+	"as",
+	"async",
+	"autocomplete",
+	"autofocus",
+	"autoplay",
+	"challenge",
+	"charset",
+	"checked",
+	"cite",
+	"class",
+	"color",
+	"cols",
+	"colspan",
+	"command",
+	"content",
+	"contenteditable",
+	"contextmenu",
+	"controls",
+	"coords",
+	"crossorigin",
+	"data",
+	"datetime",
+	"default",
+	"defer",
+	"dir",
+	"dirname",
+	"disabled",
+	"download",
+	"draggable",
+	"dropzone",
+	"enctype",
+	"for",
+	"form",
+	"formaction",
+	"formenctype",
+	"formmethod",
+	"formnovalidate",
+	"formtarget",
+	"headers",
+	"height",
+	"hidden",
+	"high",
+	"href",
+	"hreflang",
+	"http-equiv",
+	"icon",
+	"id",
+	"inputmode",
+	"integrity",
+	"is",
+	"ismap",
+	"itemid",
+	"itemprop",
+	"itemref",
+	"itemscope",
+	"itemtype",
+	"keytype",
+	"kind",
+	"label",
+	"lang",
+	"list",
+	"loop",
+	"low",
+	"manifest",
+	"max",
+	"maxlength",
+	"media",
+	"mediagroup",
+	"method",
+	"min",
+	"minlength",
+	"multiple",
+	"muted",
+	"name",
+	"nomodule",
+	"nonce",
+	"novalidate",
+	"open",
+	"optimum",
+	"pattern",
+	"ping",
+	"placeholder",
+	"playsinline",
+	"poster",
+	"preload",
+	"radiogroup",
+	"readonly",
+	"referrerpolicy",
+	"rel",
+	"required",
+	"reversed",
+	"rows",
+	"rowspan",
+	"sandbox",
+	"spellcheck",
+	"scope",
+	"scoped",
+	"seamless",
+	"selected",
+	"shape",
+	"size",
+	"sizes",
+	"sortable",
+	"sorted",
+	"slot",
+	"span",
+	"spellcheck",
+	"src",
+	"srcdoc",
+	"srclang",
+	"srcset",
+	"start",
+	"step",
+	"style",
+	"tabindex",
+	"target",
+	"title",
+	"translate",
+	"type",
+	"typemustmatch",
+	"updateviacache",
+	"usemap",
+	"value",
+	"width",
+	"workertype",
+	"wrap",
+}
+
+// "onautocomplete", "onautocompleteerror", "onmousewheel",
+// "onshow" and "onsort" have been removed from the spec,
+// but are kept here for backwards compatibility.
+var eventHandlers = []string{
+	"onabort",
+	"onautocomplete",
+	"onautocompleteerror",
+	"onauxclick",
+	"onafterprint",
+	"onbeforeprint",
+	"onbeforeunload",
+	"onblur",
+	"oncancel",
+	"oncanplay",
+	"oncanplaythrough",
+	"onchange",
+	"onclick",
+	"onclose",
+	"oncontextmenu",
+	"oncopy",
+	"oncuechange",
+	"oncut",
+	"ondblclick",
+	"ondrag",
+	"ondragend",
+	"ondragenter",
+	"ondragexit",
+	"ondragleave",
+	"ondragover",
+	"ondragstart",
+	"ondrop",
+	"ondurationchange",
+	"onemptied",
+	"onended",
+	"onerror",
+	"onfocus",
+	"onhashchange",
+	"oninput",
+	"oninvalid",
+	"onkeydown",
+	"onkeypress",
+	"onkeyup",
+	"onlanguagechange",
+	"onload",
+	"onloadeddata",
+	"onloadedmetadata",
+	"onloadend",
+	"onloadstart",
+	"onmessage",
+	"onmessageerror",
+	"onmousedown",
+	"onmouseenter",
+	"onmouseleave",
+	"onmousemove",
+	"onmouseout",
+	"onmouseover",
+	"onmouseup",
+	"onmousewheel",
+	"onwheel",
+	"onoffline",
+	"ononline",
+	"onpagehide",
+	"onpageshow",
+	"onpaste",
+	"onpause",
+	"onplay",
+	"onplaying",
+	"onpopstate",
+	"onprogress",
+	"onratechange",
+	"onreset",
+	"onresize",
+	"onrejectionhandled",
+	"onscroll",
+	"onsecuritypolicyviolation",
+	"onseeked",
+	"onseeking",
+	"onselect",
+	"onshow",
+	"onsort",
+	"onstalled",
+	"onstorage",
+	"onsubmit",
+	"onsuspend",
+	"ontimeupdate",
+	"ontoggle",
+	"onunhandledrejection",
+	"onunload",
+	"onvolumechange",
+	"onwaiting",
+}
+
+// extra are ad-hoc values not covered by any of the lists above.
+var extra = []string{
+	"acronym",
+	"align",
+	"annotation",
+	"annotation-xml",
+	"applet",
+	"basefont",
+	"bgsound",
+	"big",
+	"blink",
+	"center",
+	"color",
+	"desc",
+	"face",
+	"font",
+	"foreignObject", // HTML is case-insensitive, but SVG-embedded-in-HTML is case-sensitive.
+	"foreignobject",
+	"frame",
+	"frameset",
+	"image",
+	"isindex",
+	"listing",
+	"malignmark",
+	"marquee",
+	"math",
+	"mglyph",
+	"mi",
+	"mn",
+	"mo",
+	"ms",
+	"mtext",
+	"nobr",
+	"noembed",
+	"noframes",
+	"plaintext",
+	"prompt",
+	"public",
+	"rb",
+	"rtc",
+	"spacer",
+	"strike",
+	"svg",
+	"system",
+	"tt",
+	"xmp",
+}

vendor/golang.org/x/net/internal/iana/gen.go

+// 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.
+
+// +build ignore
+
+//go:generate go run gen.go
+
+// This program generates internet protocol constants and tables by
+// reading IANA protocol registries.
+package main
+
+import (
+	"bytes"
+	"encoding/xml"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+)
+
+var registries = []struct {
+	url   string
+	parse func(io.Writer, io.Reader) error
+}{
+	{
+		"https://www.iana.org/assignments/dscp-registry/dscp-registry.xml",
+		parseDSCPRegistry,
+	},
+	{
+		"https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xml",
+		parseProtocolNumbers,
+	},
+	{
+		"https://www.iana.org/assignments/address-family-numbers/address-family-numbers.xml",
+		parseAddrFamilyNumbers,
+	},
+}
+
+func main() {
+	var bb bytes.Buffer
+	fmt.Fprintf(&bb, "// go generate gen.go\n")
+	fmt.Fprintf(&bb, "// Code generated by the command above; DO NOT EDIT.\n\n")
+	fmt.Fprintf(&bb, "// Package iana provides protocol number resources managed by the Internet Assigned Numbers Authority (IANA).\n")
+	fmt.Fprintf(&bb, `package iana // import "golang.org/x/net/internal/iana"`+"\n\n")
+	for _, r := range registries {
+		resp, err := http.Get(r.url)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
+		defer resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			fmt.Fprintf(os.Stderr, "got HTTP status code %v for %v\n", resp.StatusCode, r.url)
+			os.Exit(1)
+		}
+		if err := r.parse(&bb, resp.Body); err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
+		fmt.Fprintf(&bb, "\n")
+	}
+	b, err := format.Source(bb.Bytes())
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	if err := ioutil.WriteFile("const.go", b, 0644); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func parseDSCPRegistry(w io.Writer, r io.Reader) error {
+	dec := xml.NewDecoder(r)
+	var dr dscpRegistry
+	if err := dec.Decode(&dr); err != nil {
+		return err
+	}
+	fmt.Fprintf(w, "// %s, Updated: %s\n", dr.Title, dr.Updated)
+	fmt.Fprintf(w, "const (\n")
+	for _, dr := range dr.escapeDSCP() {
+		fmt.Fprintf(w, "DiffServ%s = %#02x", dr.Name, dr.Value)
+		fmt.Fprintf(w, "// %s\n", dr.OrigName)
+	}
+	for _, er := range dr.escapeECN() {
+		fmt.Fprintf(w, "%s = %#02x", er.Descr, er.Value)
+		fmt.Fprintf(w, "// %s\n", er.OrigDescr)
+	}
+	fmt.Fprintf(w, ")\n")
+	return nil
+}
+
+type dscpRegistry struct {
+	XMLName    xml.Name `xml:"registry"`
+	Title      string   `xml:"title"`
+	Updated    string   `xml:"updated"`
+	Note       string   `xml:"note"`
+	Registries []struct {
+		Title      string `xml:"title"`
+		Registries []struct {
+			Title   string `xml:"title"`
+			Records []struct {
+				Name  string `xml:"name"`
+				Space string `xml:"space"`
+			} `xml:"record"`
+		} `xml:"registry"`
+		Records []struct {
+			Value string `xml:"value"`
+			Descr string `xml:"description"`
+		} `xml:"record"`
+	} `xml:"registry"`
+}
+
+type canonDSCPRecord struct {
+	OrigName string
+	Name     string
+	Value    int
+}
+
+func (drr *dscpRegistry) escapeDSCP() []canonDSCPRecord {
+	var drs []canonDSCPRecord
+	for _, preg := range drr.Registries {
+		if !strings.Contains(preg.Title, "Differentiated Services Field Codepoints") {
+			continue
+		}
+		for _, reg := range preg.Registries {
+			if !strings.Contains(reg.Title, "Pool 1 Codepoints") {
+				continue
+			}
+			drs = make([]canonDSCPRecord, len(reg.Records))
+			sr := strings.NewReplacer(
+				"+", "",
+				"-", "",
+				"/", "",
+				".", "",
+				" ", "",
+			)
+			for i, dr := range reg.Records {
+				s := strings.TrimSpace(dr.Name)
+				drs[i].OrigName = s
+				drs[i].Name = sr.Replace(s)
+				n, err := strconv.ParseUint(dr.Space, 2, 8)
+				if err != nil {
+					continue
+				}
+				drs[i].Value = int(n) << 2
+			}
+		}
+	}
+	return drs
+}
+
+type canonECNRecord struct {
+	OrigDescr string
+	Descr     string
+	Value     int
+}
+
+func (drr *dscpRegistry) escapeECN() []canonECNRecord {
+	var ers []canonECNRecord
+	for _, reg := range drr.Registries {
+		if !strings.Contains(reg.Title, "ECN Field") {
+			continue
+		}
+		ers = make([]canonECNRecord, len(reg.Records))
+		sr := strings.NewReplacer(
+			"Capable", "",
+			"Not-ECT", "",
+			"ECT(1)", "",
+			"ECT(0)", "",
+			"CE", "",
+			"(", "",
+			")", "",
+			"+", "",
+			"-", "",
+			"/", "",
+			".", "",
+			" ", "",
+		)
+		for i, er := range reg.Records {
+			s := strings.TrimSpace(er.Descr)
+			ers[i].OrigDescr = s
+			ss := strings.Split(s, " ")
+			if len(ss) > 1 {
+				ers[i].Descr = strings.Join(ss[1:], " ")
+			} else {
+				ers[i].Descr = ss[0]
+			}
+			ers[i].Descr = sr.Replace(er.Descr)
+			n, err := strconv.ParseUint(er.Value, 2, 8)
+			if err != nil {
+				continue
+			}
+			ers[i].Value = int(n)
+		}
+	}
+	return ers
+}
+
+func parseProtocolNumbers(w io.Writer, r io.Reader) error {
+	dec := xml.NewDecoder(r)
+	var pn protocolNumbers
+	if err := dec.Decode(&pn); err != nil {
+		return err
+	}
+	prs := pn.escape()
+	prs = append([]canonProtocolRecord{{
+		Name:  "IP",
+		Descr: "IPv4 encapsulation, pseudo protocol number",
+		Value: 0,
+	}}, prs...)
+	fmt.Fprintf(w, "// %s, Updated: %s\n", pn.Title, pn.Updated)
+	fmt.Fprintf(w, "const (\n")
+	for _, pr := range prs {
+		if pr.Name == "" {
+			continue
+		}
+		fmt.Fprintf(w, "Protocol%s = %d", pr.Name, pr.Value)
+		s := pr.Descr
+		if s == "" {
+			s = pr.OrigName
+		}
+		fmt.Fprintf(w, "// %s\n", s)
+	}
+	fmt.Fprintf(w, ")\n")
+	return nil
+}
+
+type protocolNumbers struct {
+	XMLName  xml.Name `xml:"registry"`
+	Title    string   `xml:"title"`
+	Updated  string   `xml:"updated"`
+	RegTitle string   `xml:"registry>title"`
+	Note     string   `xml:"registry>note"`
+	Records  []struct {
+		Value string `xml:"value"`
+		Name  string `xml:"name"`
+		Descr string `xml:"description"`
+	} `xml:"registry>record"`
+}
+
+type canonProtocolRecord struct {
+	OrigName string
+	Name     string
+	Descr    string
+	Value    int
+}
+
+func (pn *protocolNumbers) escape() []canonProtocolRecord {
+	prs := make([]canonProtocolRecord, len(pn.Records))
+	sr := strings.NewReplacer(
+		"-in-", "in",
+		"-within-", "within",
+		"-over-", "over",
+		"+", "P",
+		"-", "",
+		"/", "",
+		".", "",
+		" ", "",
+	)
+	for i, pr := range pn.Records {
+		if strings.Contains(pr.Name, "Deprecated") ||
+			strings.Contains(pr.Name, "deprecated") {
+			continue
+		}
+		prs[i].OrigName = pr.Name
+		s := strings.TrimSpace(pr.Name)
+		switch pr.Name {
+		case "ISIS over IPv4":
+			prs[i].Name = "ISIS"
+		case "manet":
+			prs[i].Name = "MANET"
+		default:
+			prs[i].Name = sr.Replace(s)
+		}
+		ss := strings.Split(pr.Descr, "\n")
+		for i := range ss {
+			ss[i] = strings.TrimSpace(ss[i])
+		}
+		if len(ss) > 1 {
+			prs[i].Descr = strings.Join(ss, " ")
+		} else {
+			prs[i].Descr = ss[0]
+		}
+		prs[i].Value, _ = strconv.Atoi(pr.Value)
+	}
+	return prs
+}
+
+func parseAddrFamilyNumbers(w io.Writer, r io.Reader) error {
+	dec := xml.NewDecoder(r)
+	var afn addrFamilylNumbers
+	if err := dec.Decode(&afn); err != nil {
+		return err
+	}
+	afrs := afn.escape()
+	fmt.Fprintf(w, "// %s, Updated: %s\n", afn.Title, afn.Updated)
+	fmt.Fprintf(w, "const (\n")
+	for _, afr := range afrs {
+		if afr.Name == "" {
+			continue
+		}
+		fmt.Fprintf(w, "AddrFamily%s = %d", afr.Name, afr.Value)
+		fmt.Fprintf(w, "// %s\n", afr.Descr)
+	}
+	fmt.Fprintf(w, ")\n")
+	return nil
+}
+
+type addrFamilylNumbers struct {
+	XMLName  xml.Name `xml:"registry"`
+	Title    string   `xml:"title"`
+	Updated  string   `xml:"updated"`
+	RegTitle string   `xml:"registry>title"`
+	Note     string   `xml:"registry>note"`
+	Records  []struct {
+		Value string `xml:"value"`
+		Descr string `xml:"description"`
+	} `xml:"registry>record"`
+}
+
+type canonAddrFamilyRecord struct {
+	Name  string
+	Descr string
+	Value int
+}
+
+func (afn *addrFamilylNumbers) escape() []canonAddrFamilyRecord {
+	afrs := make([]canonAddrFamilyRecord, len(afn.Records))
+	sr := strings.NewReplacer(
+		"IP version 4", "IPv4",
+		"IP version 6", "IPv6",
+		"Identifier", "ID",
+		"-", "",
+		"-", "",
+		"/", "",
+		".", "",
+		" ", "",
+	)
+	for i, afr := range afn.Records {
+		if strings.Contains(afr.Descr, "Unassigned") ||
+			strings.Contains(afr.Descr, "Reserved") {
+			continue
+		}
+		afrs[i].Descr = afr.Descr
+		s := strings.TrimSpace(afr.Descr)
+		switch s {
+		case "IP (IP version 4)":
+			afrs[i].Name = "IPv4"
+		case "IP6 (IP version 6)":
+			afrs[i].Name = "IPv6"
+		case "AFI for L2VPN information":
+			afrs[i].Name = "L2VPN"
+		case "E.164 with NSAP format subaddress":
+			afrs[i].Name = "E164withSubaddress"
+		case "MT IP: Multi-Topology IP version 4":
+			afrs[i].Name = "MTIPv4"
+		case "MAC/24":
+			afrs[i].Name = "MACFinal24bits"
+		case "MAC/40":
+			afrs[i].Name = "MACFinal40bits"
+		case "IPv6/64":
+			afrs[i].Name = "IPv6Initial64bits"
+		default:
+			n := strings.Index(s, "(")
+			if n > 0 {
+				s = s[:n]
+			}
+			n = strings.Index(s, ":")
+			if n > 0 {
+				s = s[:n]
+			}
+			afrs[i].Name = sr.Replace(s)
+		}
+		afrs[i].Value, _ = strconv.Atoi(afr.Value)
+	}
+	return afrs
+}

vendor/golang.org/x/net/internal/socket/defs_darwin.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/internal/socket/defs_dragonfly.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/internal/socket/defs_freebsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/internal/socket/defs_linux.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <linux/in.h>
+#include <linux/in6.h>
+
+#define _GNU_SOURCE
+#include <sys/socket.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type mmsghdr C.struct_mmsghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofMmsghdr = C.sizeof_struct_mmsghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/internal/socket/defs_netbsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type mmsghdr C.struct_mmsghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofMmsghdr = C.sizeof_struct_mmsghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/internal/socket/defs_openbsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/internal/socket/defs_solaris.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package socket
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysAF_UNSPEC = C.AF_UNSPEC
+	sysAF_INET   = C.AF_INET
+	sysAF_INET6  = C.AF_INET6
+
+	sysSOCK_RAW = C.SOCK_RAW
+)
+
+type iovec C.struct_iovec
+
+type msghdr C.struct_msghdr
+
+type cmsghdr C.struct_cmsghdr
+
+type sockaddrInet C.struct_sockaddr_in
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+const (
+	sizeofIovec   = C.sizeof_struct_iovec
+	sizeofMsghdr  = C.sizeof_struct_msghdr
+	sizeofCmsghdr = C.sizeof_struct_cmsghdr
+
+	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+)

vendor/golang.org/x/net/ipv4/defs_darwin.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_STRIPHDR    = C.IP_STRIPHDR
+	sysIP_RECVTTL     = C.IP_RECVTTL
+	sysIP_BOUND_IF    = C.IP_BOUND_IF
+	sysIP_PKTINFO     = C.IP_PKTINFO
+	sysIP_RECVPKTINFO = C.IP_RECVPKTINFO
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_MULTICAST_VIF          = C.IP_MULTICAST_VIF
+	sysIP_MULTICAST_IFINDEX      = C.IP_MULTICAST_IFINDEX
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofInetPktinfo     = C.sizeof_struct_in_pktinfo
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type inetPktinfo C.struct_in_pktinfo
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqn C.struct_ip_mreqn
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/defs_dragonfly.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
+	sysIP_MULTICAST_VIF   = C.IP_MULTICAST_VIF
+	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
+
+	sizeofIPMreq = C.sizeof_struct_ip_mreq
+)
+
+type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_freebsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_SENDSRCADDR = C.IP_SENDSRCADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_ONESBCAST   = C.IP_ONESBCAST
+	sysIP_BINDANY     = C.IP_BINDANY
+	sysIP_RECVTTL     = C.IP_RECVTTL
+	sysIP_MINTTL      = C.IP_MINTTL
+	sysIP_DONTFRAG    = C.IP_DONTFRAG
+	sysIP_RECVTOS     = C.IP_RECVTOS
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_MULTICAST_VIF          = C.IP_MULTICAST_VIF
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqn C.struct_ip_mreqn
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/defs_linux.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <time.h>
+
+#include <linux/errqueue.h>
+#include <linux/icmp.h>
+#include <linux/in.h>
+#include <linux/filter.h>
+#include <sys/socket.h>
+*/
+import "C"
+
+const (
+	sysIP_TOS             = C.IP_TOS
+	sysIP_TTL             = C.IP_TTL
+	sysIP_HDRINCL         = C.IP_HDRINCL
+	sysIP_OPTIONS         = C.IP_OPTIONS
+	sysIP_ROUTER_ALERT    = C.IP_ROUTER_ALERT
+	sysIP_RECVOPTS        = C.IP_RECVOPTS
+	sysIP_RETOPTS         = C.IP_RETOPTS
+	sysIP_PKTINFO         = C.IP_PKTINFO
+	sysIP_PKTOPTIONS      = C.IP_PKTOPTIONS
+	sysIP_MTU_DISCOVER    = C.IP_MTU_DISCOVER
+	sysIP_RECVERR         = C.IP_RECVERR
+	sysIP_RECVTTL         = C.IP_RECVTTL
+	sysIP_RECVTOS         = C.IP_RECVTOS
+	sysIP_MTU             = C.IP_MTU
+	sysIP_FREEBIND        = C.IP_FREEBIND
+	sysIP_TRANSPARENT     = C.IP_TRANSPARENT
+	sysIP_RECVRETOPTS     = C.IP_RECVRETOPTS
+	sysIP_ORIGDSTADDR     = C.IP_ORIGDSTADDR
+	sysIP_RECVORIGDSTADDR = C.IP_RECVORIGDSTADDR
+	sysIP_MINTTL          = C.IP_MINTTL
+	sysIP_NODEFRAG        = C.IP_NODEFRAG
+	sysIP_UNICAST_IF      = C.IP_UNICAST_IF
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_MSFILTER               = C.IP_MSFILTER
+	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
+	sysMCAST_MSFILTER            = C.MCAST_MSFILTER
+	sysIP_MULTICAST_ALL          = C.IP_MULTICAST_ALL
+
+	//sysIP_PMTUDISC_DONT      = C.IP_PMTUDISC_DONT
+	//sysIP_PMTUDISC_WANT      = C.IP_PMTUDISC_WANT
+	//sysIP_PMTUDISC_DO        = C.IP_PMTUDISC_DO
+	//sysIP_PMTUDISC_PROBE     = C.IP_PMTUDISC_PROBE
+	//sysIP_PMTUDISC_INTERFACE = C.IP_PMTUDISC_INTERFACE
+	//sysIP_PMTUDISC_OMIT      = C.IP_PMTUDISC_OMIT
+
+	sysICMP_FILTER = C.ICMP_FILTER
+
+	sysSO_EE_ORIGIN_NONE         = C.SO_EE_ORIGIN_NONE
+	sysSO_EE_ORIGIN_LOCAL        = C.SO_EE_ORIGIN_LOCAL
+	sysSO_EE_ORIGIN_ICMP         = C.SO_EE_ORIGIN_ICMP
+	sysSO_EE_ORIGIN_ICMP6        = C.SO_EE_ORIGIN_ICMP6
+	sysSO_EE_ORIGIN_TXSTATUS     = C.SO_EE_ORIGIN_TXSTATUS
+	sysSO_EE_ORIGIN_TIMESTAMPING = C.SO_EE_ORIGIN_TIMESTAMPING
+
+	sysSOL_SOCKET       = C.SOL_SOCKET
+	sysSO_ATTACH_FILTER = C.SO_ATTACH_FILTER
+
+	sizeofKernelSockaddrStorage = C.sizeof_struct___kernel_sockaddr_storage
+	sizeofSockaddrInet          = C.sizeof_struct_sockaddr_in
+	sizeofInetPktinfo           = C.sizeof_struct_in_pktinfo
+	sizeofSockExtendedErr       = C.sizeof_struct_sock_extended_err
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+
+	sizeofICMPFilter = C.sizeof_struct_icmp_filter
+
+	sizeofSockFprog = C.sizeof_struct_sock_fprog
+)
+
+type kernelSockaddrStorage C.struct___kernel_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type inetPktinfo C.struct_in_pktinfo
+
+type sockExtendedErr C.struct_sock_extended_err
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqn C.struct_ip_mreqn
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req
+
+type icmpFilter C.struct_icmp_filter
+
+type sockFProg C.struct_sock_fprog
+
+type sockFilter C.struct_sock_filter

vendor/golang.org/x/net/ipv4/defs_netbsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
+
+	sizeofIPMreq = C.sizeof_struct_ip_mreq
+)
+
+type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_openbsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
+
+	sizeofIPMreq = C.sizeof_struct_ip_mreq
+)
+
+type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_solaris.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+
+package ipv4
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+*/
+import "C"
+
+const (
+	sysIP_OPTIONS     = C.IP_OPTIONS
+	sysIP_HDRINCL     = C.IP_HDRINCL
+	sysIP_TOS         = C.IP_TOS
+	sysIP_TTL         = C.IP_TTL
+	sysIP_RECVOPTS    = C.IP_RECVOPTS
+	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
+	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
+	sysIP_RETOPTS     = C.IP_RETOPTS
+	sysIP_RECVIF      = C.IP_RECVIF
+	sysIP_RECVSLLA    = C.IP_RECVSLLA
+	sysIP_RECVTTL     = C.IP_RECVTTL
+
+	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
+	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
+	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
+	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
+	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
+	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
+	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
+	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
+	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
+	sysIP_NEXTHOP                = C.IP_NEXTHOP
+
+	sysIP_PKTINFO     = C.IP_PKTINFO
+	sysIP_RECVPKTINFO = C.IP_RECVPKTINFO
+	sysIP_DONTFRAG    = C.IP_DONTFRAG
+
+	sysIP_BOUND_IF      = C.IP_BOUND_IF
+	sysIP_UNSPEC_SRC    = C.IP_UNSPEC_SRC
+	sysIP_BROADCAST_TTL = C.IP_BROADCAST_TTL
+	sysIP_DHCPINIT_IF   = C.IP_DHCPINIT_IF
+
+	sysIP_REUSEADDR = C.IP_REUSEADDR
+	sysIP_DONTROUTE = C.IP_DONTROUTE
+	sysIP_BROADCAST = C.IP_BROADCAST
+
+	sysMCAST_JOIN_GROUP         = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP        = C.MCAST_LEAVE_GROUP
+	sysMCAST_BLOCK_SOURCE       = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE     = C.MCAST_UNBLOCK_SOURCE
+	sysMCAST_JOIN_SOURCE_GROUP  = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP = C.MCAST_LEAVE_SOURCE_GROUP
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
+	sizeofInetPktinfo     = C.sizeof_struct_in_pktinfo
+
+	sizeofIPMreq         = C.sizeof_struct_ip_mreq
+	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet C.struct_sockaddr_in
+
+type inetPktinfo C.struct_in_pktinfo
+
+type ipMreq C.struct_ip_mreq
+
+type ipMreqSource C.struct_ip_mreq_source
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/gen.go

+// 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.
+
+// +build ignore
+
+//go:generate go run gen.go
+
+// This program generates system adaptation constants and types,
+// internet protocol constants and tables by reading template files
+// and IANA protocol registries.
+package main
+
+import (
+	"bytes"
+	"encoding/xml"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	if err := genzsys(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	if err := geniana(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func genzsys() error {
+	defs := "defs_" + runtime.GOOS + ".go"
+	f, err := os.Open(defs)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	f.Close()
+	cmd := exec.Command("go", "tool", "cgo", "-godefs", defs)
+	b, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+	b, err = format.Source(b)
+	if err != nil {
+		return err
+	}
+	zsys := "zsys_" + runtime.GOOS + ".go"
+	switch runtime.GOOS {
+	case "freebsd", "linux":
+		zsys = "zsys_" + runtime.GOOS + "_" + runtime.GOARCH + ".go"
+	}
+	if err := ioutil.WriteFile(zsys, b, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+var registries = []struct {
+	url   string
+	parse func(io.Writer, io.Reader) error
+}{
+	{
+		"https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xml",
+		parseICMPv4Parameters,
+	},
+}
+
+func geniana() error {
+	var bb bytes.Buffer
+	fmt.Fprintf(&bb, "// go generate gen.go\n")
+	fmt.Fprintf(&bb, "// Code generated by the command above; DO NOT EDIT.\n\n")
+	fmt.Fprintf(&bb, "package ipv4\n\n")
+	for _, r := range registries {
+		resp, err := http.Get(r.url)
+		if err != nil {
+			return err
+		}
+		defer resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			return fmt.Errorf("got HTTP status code %v for %v\n", resp.StatusCode, r.url)
+		}
+		if err := r.parse(&bb, resp.Body); err != nil {
+			return err
+		}
+		fmt.Fprintf(&bb, "\n")
+	}
+	b, err := format.Source(bb.Bytes())
+	if err != nil {
+		return err
+	}
+	if err := ioutil.WriteFile("iana.go", b, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+func parseICMPv4Parameters(w io.Writer, r io.Reader) error {
+	dec := xml.NewDecoder(r)
+	var icp icmpv4Parameters
+	if err := dec.Decode(&icp); err != nil {
+		return err
+	}
+	prs := icp.escape()
+	fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+	fmt.Fprintf(w, "const (\n")
+	for _, pr := range prs {
+		if pr.Descr == "" {
+			continue
+		}
+		fmt.Fprintf(w, "ICMPType%s ICMPType = %d", pr.Descr, pr.Value)
+		fmt.Fprintf(w, "// %s\n", pr.OrigDescr)
+	}
+	fmt.Fprintf(w, ")\n\n")
+	fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+	fmt.Fprintf(w, "var icmpTypes = map[ICMPType]string{\n")
+	for _, pr := range prs {
+		if pr.Descr == "" {
+			continue
+		}
+		fmt.Fprintf(w, "%d: %q,\n", pr.Value, strings.ToLower(pr.OrigDescr))
+	}
+	fmt.Fprintf(w, "}\n")
+	return nil
+}
+
+type icmpv4Parameters struct {
+	XMLName    xml.Name `xml:"registry"`
+	Title      string   `xml:"title"`
+	Updated    string   `xml:"updated"`
+	Registries []struct {
+		Title   string `xml:"title"`
+		Records []struct {
+			Value string `xml:"value"`
+			Descr string `xml:"description"`
+		} `xml:"record"`
+	} `xml:"registry"`
+}
+
+type canonICMPv4ParamRecord struct {
+	OrigDescr string
+	Descr     string
+	Value     int
+}
+
+func (icp *icmpv4Parameters) escape() []canonICMPv4ParamRecord {
+	id := -1
+	for i, r := range icp.Registries {
+		if strings.Contains(r.Title, "Type") || strings.Contains(r.Title, "type") {
+			id = i
+			break
+		}
+	}
+	if id < 0 {
+		return nil
+	}
+	prs := make([]canonICMPv4ParamRecord, len(icp.Registries[id].Records))
+	sr := strings.NewReplacer(
+		"Messages", "",
+		"Message", "",
+		"ICMP", "",
+		"+", "P",
+		"-", "",
+		"/", "",
+		".", "",
+		" ", "",
+	)
+	for i, pr := range icp.Registries[id].Records {
+		if strings.Contains(pr.Descr, "Reserved") ||
+			strings.Contains(pr.Descr, "Unassigned") ||
+			strings.Contains(pr.Descr, "Deprecated") ||
+			strings.Contains(pr.Descr, "Experiment") ||
+			strings.Contains(pr.Descr, "experiment") {
+			continue
+		}
+		ss := strings.Split(pr.Descr, "\n")
+		if len(ss) > 1 {
+			prs[i].Descr = strings.Join(ss, " ")
+		} else {
+			prs[i].Descr = ss[0]
+		}
+		s := strings.TrimSpace(prs[i].Descr)
+		prs[i].OrigDescr = s
+		prs[i].Descr = sr.Replace(s)
+		prs[i].Value, _ = strconv.Atoi(pr.Value)
+	}
+	return prs
+}

vendor/golang.org/x/net/ipv6/defs_darwin.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#define __APPLE_USE_RFC_3542
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+*/
+import "C"
+
+const (
+	sysIPV6_UNICAST_HOPS   = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF   = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP = C.IPV6_MULTICAST_LOOP
+	sysIPV6_JOIN_GROUP     = C.IPV6_JOIN_GROUP
+	sysIPV6_LEAVE_GROUP    = C.IPV6_LEAVE_GROUP
+
+	sysIPV6_PORTRANGE    = C.IPV6_PORTRANGE
+	sysICMP6_FILTER      = C.ICMP6_FILTER
+	sysIPV6_2292PKTINFO  = C.IPV6_2292PKTINFO
+	sysIPV6_2292HOPLIMIT = C.IPV6_2292HOPLIMIT
+	sysIPV6_2292NEXTHOP  = C.IPV6_2292NEXTHOP
+	sysIPV6_2292HOPOPTS  = C.IPV6_2292HOPOPTS
+	sysIPV6_2292DSTOPTS  = C.IPV6_2292DSTOPTS
+	sysIPV6_2292RTHDR    = C.IPV6_2292RTHDR
+
+	sysIPV6_2292PKTOPTIONS = C.IPV6_2292PKTOPTIONS
+
+	sysIPV6_CHECKSUM = C.IPV6_CHECKSUM
+	sysIPV6_V6ONLY   = C.IPV6_V6ONLY
+
+	sysIPV6_IPSEC_POLICY = C.IPV6_IPSEC_POLICY
+
+	sysIPV6_RECVTCLASS = C.IPV6_RECVTCLASS
+	sysIPV6_TCLASS     = C.IPV6_TCLASS
+
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+
+	sysIPV6_RECVPKTINFO = C.IPV6_RECVPKTINFO
+
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_RECVRTHDR    = C.IPV6_RECVRTHDR
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+	sysIPV6_RECVDSTOPTS  = C.IPV6_RECVDSTOPTS
+
+	sysIPV6_USE_MIN_MTU = C.IPV6_USE_MIN_MTU
+	sysIPV6_RECVPATHMTU = C.IPV6_RECVPATHMTU
+
+	sysIPV6_PATHMTU = C.IPV6_PATHMTU
+
+	sysIPV6_PKTINFO  = C.IPV6_PKTINFO
+	sysIPV6_HOPLIMIT = C.IPV6_HOPLIMIT
+	sysIPV6_NEXTHOP  = C.IPV6_NEXTHOP
+	sysIPV6_HOPOPTS  = C.IPV6_HOPOPTS
+	sysIPV6_DSTOPTS  = C.IPV6_DSTOPTS
+	sysIPV6_RTHDR    = C.IPV6_RTHDR
+
+	sysIPV6_AUTOFLOWLABEL = C.IPV6_AUTOFLOWLABEL
+
+	sysIPV6_DONTFRAG = C.IPV6_DONTFRAG
+
+	sysIPV6_PREFER_TEMPADDR = C.IPV6_PREFER_TEMPADDR
+
+	sysIPV6_MSFILTER            = C.IPV6_MSFILTER
+	sysMCAST_JOIN_GROUP         = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP        = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP  = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE       = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE     = C.MCAST_UNBLOCK_SOURCE
+
+	sysIPV6_BOUND_IF = C.IPV6_BOUND_IF
+
+	sysIPV6_PORTRANGE_DEFAULT = C.IPV6_PORTRANGE_DEFAULT
+	sysIPV6_PORTRANGE_HIGH    = C.IPV6_PORTRANGE_HIGH
+	sysIPV6_PORTRANGE_LOW     = C.IPV6_PORTRANGE_LOW
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo    = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo     = C.sizeof_struct_ip6_mtuinfo
+
+	sizeofIPv6Mreq       = C.sizeof_struct_ipv6_mreq
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type icmpv6Filter C.struct_icmp6_filter
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv6/defs_dragonfly.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+*/
+import "C"
+
+const (
+	sysIPV6_UNICAST_HOPS   = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF   = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP = C.IPV6_MULTICAST_LOOP
+	sysIPV6_JOIN_GROUP     = C.IPV6_JOIN_GROUP
+	sysIPV6_LEAVE_GROUP    = C.IPV6_LEAVE_GROUP
+	sysIPV6_PORTRANGE      = C.IPV6_PORTRANGE
+	sysICMP6_FILTER        = C.ICMP6_FILTER
+
+	sysIPV6_CHECKSUM = C.IPV6_CHECKSUM
+	sysIPV6_V6ONLY   = C.IPV6_V6ONLY
+
+	sysIPV6_IPSEC_POLICY = C.IPV6_IPSEC_POLICY
+
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+	sysIPV6_RECVPKTINFO  = C.IPV6_RECVPKTINFO
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_RECVRTHDR    = C.IPV6_RECVRTHDR
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+	sysIPV6_RECVDSTOPTS  = C.IPV6_RECVDSTOPTS
+
+	sysIPV6_USE_MIN_MTU = C.IPV6_USE_MIN_MTU
+	sysIPV6_RECVPATHMTU = C.IPV6_RECVPATHMTU
+
+	sysIPV6_PATHMTU = C.IPV6_PATHMTU
+
+	sysIPV6_PKTINFO  = C.IPV6_PKTINFO
+	sysIPV6_HOPLIMIT = C.IPV6_HOPLIMIT
+	sysIPV6_NEXTHOP  = C.IPV6_NEXTHOP
+	sysIPV6_HOPOPTS  = C.IPV6_HOPOPTS
+	sysIPV6_DSTOPTS  = C.IPV6_DSTOPTS
+	sysIPV6_RTHDR    = C.IPV6_RTHDR
+
+	sysIPV6_RECVTCLASS = C.IPV6_RECVTCLASS
+
+	sysIPV6_AUTOFLOWLABEL = C.IPV6_AUTOFLOWLABEL
+
+	sysIPV6_TCLASS   = C.IPV6_TCLASS
+	sysIPV6_DONTFRAG = C.IPV6_DONTFRAG
+
+	sysIPV6_PREFER_TEMPADDR = C.IPV6_PREFER_TEMPADDR
+
+	sysIPV6_PORTRANGE_DEFAULT = C.IPV6_PORTRANGE_DEFAULT
+	sysIPV6_PORTRANGE_HIGH    = C.IPV6_PORTRANGE_HIGH
+	sysIPV6_PORTRANGE_LOW     = C.IPV6_PORTRANGE_LOW
+
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo  = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo   = C.sizeof_struct_ip6_mtuinfo
+
+	sizeofIPv6Mreq = C.sizeof_struct_ipv6_mreq
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+)
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type icmpv6Filter C.struct_icmp6_filter

vendor/golang.org/x/net/ipv6/defs_freebsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+*/
+import "C"
+
+const (
+	sysIPV6_UNICAST_HOPS   = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF   = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP = C.IPV6_MULTICAST_LOOP
+	sysIPV6_JOIN_GROUP     = C.IPV6_JOIN_GROUP
+	sysIPV6_LEAVE_GROUP    = C.IPV6_LEAVE_GROUP
+	sysIPV6_PORTRANGE      = C.IPV6_PORTRANGE
+	sysICMP6_FILTER        = C.ICMP6_FILTER
+
+	sysIPV6_CHECKSUM = C.IPV6_CHECKSUM
+	sysIPV6_V6ONLY   = C.IPV6_V6ONLY
+
+	sysIPV6_IPSEC_POLICY = C.IPV6_IPSEC_POLICY
+
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+
+	sysIPV6_RECVPKTINFO  = C.IPV6_RECVPKTINFO
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_RECVRTHDR    = C.IPV6_RECVRTHDR
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+	sysIPV6_RECVDSTOPTS  = C.IPV6_RECVDSTOPTS
+
+	sysIPV6_USE_MIN_MTU = C.IPV6_USE_MIN_MTU
+	sysIPV6_RECVPATHMTU = C.IPV6_RECVPATHMTU
+
+	sysIPV6_PATHMTU = C.IPV6_PATHMTU
+
+	sysIPV6_PKTINFO  = C.IPV6_PKTINFO
+	sysIPV6_HOPLIMIT = C.IPV6_HOPLIMIT
+	sysIPV6_NEXTHOP  = C.IPV6_NEXTHOP
+	sysIPV6_HOPOPTS  = C.IPV6_HOPOPTS
+	sysIPV6_DSTOPTS  = C.IPV6_DSTOPTS
+	sysIPV6_RTHDR    = C.IPV6_RTHDR
+
+	sysIPV6_RECVTCLASS = C.IPV6_RECVTCLASS
+
+	sysIPV6_AUTOFLOWLABEL = C.IPV6_AUTOFLOWLABEL
+
+	sysIPV6_TCLASS   = C.IPV6_TCLASS
+	sysIPV6_DONTFRAG = C.IPV6_DONTFRAG
+
+	sysIPV6_PREFER_TEMPADDR = C.IPV6_PREFER_TEMPADDR
+
+	sysIPV6_BINDANY = C.IPV6_BINDANY
+
+	sysIPV6_MSFILTER = C.IPV6_MSFILTER
+
+	sysMCAST_JOIN_GROUP         = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP        = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP  = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE       = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE     = C.MCAST_UNBLOCK_SOURCE
+
+	sysIPV6_PORTRANGE_DEFAULT = C.IPV6_PORTRANGE_DEFAULT
+	sysIPV6_PORTRANGE_HIGH    = C.IPV6_PORTRANGE_HIGH
+	sysIPV6_PORTRANGE_LOW     = C.IPV6_PORTRANGE_LOW
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo    = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo     = C.sizeof_struct_ip6_mtuinfo
+
+	sizeofIPv6Mreq       = C.sizeof_struct_ipv6_mreq
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req
+
+type icmpv6Filter C.struct_icmp6_filter

vendor/golang.org/x/net/ipv6/defs_linux.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/ipv6.h>
+#include <linux/icmpv6.h>
+#include <linux/filter.h>
+#include <sys/socket.h>
+*/
+import "C"
+
+const (
+	sysIPV6_ADDRFORM       = C.IPV6_ADDRFORM
+	sysIPV6_2292PKTINFO    = C.IPV6_2292PKTINFO
+	sysIPV6_2292HOPOPTS    = C.IPV6_2292HOPOPTS
+	sysIPV6_2292DSTOPTS    = C.IPV6_2292DSTOPTS
+	sysIPV6_2292RTHDR      = C.IPV6_2292RTHDR
+	sysIPV6_2292PKTOPTIONS = C.IPV6_2292PKTOPTIONS
+	sysIPV6_CHECKSUM       = C.IPV6_CHECKSUM
+	sysIPV6_2292HOPLIMIT   = C.IPV6_2292HOPLIMIT
+	sysIPV6_NEXTHOP        = C.IPV6_NEXTHOP
+	sysIPV6_FLOWINFO       = C.IPV6_FLOWINFO
+
+	sysIPV6_UNICAST_HOPS        = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF        = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS      = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP      = C.IPV6_MULTICAST_LOOP
+	sysIPV6_ADD_MEMBERSHIP      = C.IPV6_ADD_MEMBERSHIP
+	sysIPV6_DROP_MEMBERSHIP     = C.IPV6_DROP_MEMBERSHIP
+	sysMCAST_JOIN_GROUP         = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP        = C.MCAST_LEAVE_GROUP
+	sysMCAST_JOIN_SOURCE_GROUP  = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP = C.MCAST_LEAVE_SOURCE_GROUP
+	sysMCAST_BLOCK_SOURCE       = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE     = C.MCAST_UNBLOCK_SOURCE
+	sysMCAST_MSFILTER           = C.MCAST_MSFILTER
+	sysIPV6_ROUTER_ALERT        = C.IPV6_ROUTER_ALERT
+	sysIPV6_MTU_DISCOVER        = C.IPV6_MTU_DISCOVER
+	sysIPV6_MTU                 = C.IPV6_MTU
+	sysIPV6_RECVERR             = C.IPV6_RECVERR
+	sysIPV6_V6ONLY              = C.IPV6_V6ONLY
+	sysIPV6_JOIN_ANYCAST        = C.IPV6_JOIN_ANYCAST
+	sysIPV6_LEAVE_ANYCAST       = C.IPV6_LEAVE_ANYCAST
+
+	//sysIPV6_PMTUDISC_DONT      = C.IPV6_PMTUDISC_DONT
+	//sysIPV6_PMTUDISC_WANT      = C.IPV6_PMTUDISC_WANT
+	//sysIPV6_PMTUDISC_DO        = C.IPV6_PMTUDISC_DO
+	//sysIPV6_PMTUDISC_PROBE     = C.IPV6_PMTUDISC_PROBE
+	//sysIPV6_PMTUDISC_INTERFACE = C.IPV6_PMTUDISC_INTERFACE
+	//sysIPV6_PMTUDISC_OMIT      = C.IPV6_PMTUDISC_OMIT
+
+	sysIPV6_FLOWLABEL_MGR = C.IPV6_FLOWLABEL_MGR
+	sysIPV6_FLOWINFO_SEND = C.IPV6_FLOWINFO_SEND
+
+	sysIPV6_IPSEC_POLICY = C.IPV6_IPSEC_POLICY
+	sysIPV6_XFRM_POLICY  = C.IPV6_XFRM_POLICY
+
+	sysIPV6_RECVPKTINFO  = C.IPV6_RECVPKTINFO
+	sysIPV6_PKTINFO      = C.IPV6_PKTINFO
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_HOPLIMIT     = C.IPV6_HOPLIMIT
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+	sysIPV6_HOPOPTS      = C.IPV6_HOPOPTS
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+	sysIPV6_RECVRTHDR    = C.IPV6_RECVRTHDR
+	sysIPV6_RTHDR        = C.IPV6_RTHDR
+	sysIPV6_RECVDSTOPTS  = C.IPV6_RECVDSTOPTS
+	sysIPV6_DSTOPTS      = C.IPV6_DSTOPTS
+	sysIPV6_RECVPATHMTU  = C.IPV6_RECVPATHMTU
+	sysIPV6_PATHMTU      = C.IPV6_PATHMTU
+	sysIPV6_DONTFRAG     = C.IPV6_DONTFRAG
+
+	sysIPV6_RECVTCLASS = C.IPV6_RECVTCLASS
+	sysIPV6_TCLASS     = C.IPV6_TCLASS
+
+	sysIPV6_ADDR_PREFERENCES = C.IPV6_ADDR_PREFERENCES
+
+	sysIPV6_PREFER_SRC_TMP            = C.IPV6_PREFER_SRC_TMP
+	sysIPV6_PREFER_SRC_PUBLIC         = C.IPV6_PREFER_SRC_PUBLIC
+	sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = C.IPV6_PREFER_SRC_PUBTMP_DEFAULT
+	sysIPV6_PREFER_SRC_COA            = C.IPV6_PREFER_SRC_COA
+	sysIPV6_PREFER_SRC_HOME           = C.IPV6_PREFER_SRC_HOME
+	sysIPV6_PREFER_SRC_CGA            = C.IPV6_PREFER_SRC_CGA
+	sysIPV6_PREFER_SRC_NONCGA         = C.IPV6_PREFER_SRC_NONCGA
+
+	sysIPV6_MINHOPCOUNT = C.IPV6_MINHOPCOUNT
+
+	sysIPV6_ORIGDSTADDR     = C.IPV6_ORIGDSTADDR
+	sysIPV6_RECVORIGDSTADDR = C.IPV6_RECVORIGDSTADDR
+	sysIPV6_TRANSPARENT     = C.IPV6_TRANSPARENT
+	sysIPV6_UNICAST_IF      = C.IPV6_UNICAST_IF
+
+	sysICMPV6_FILTER = C.ICMPV6_FILTER
+
+	sysICMPV6_FILTER_BLOCK       = C.ICMPV6_FILTER_BLOCK
+	sysICMPV6_FILTER_PASS        = C.ICMPV6_FILTER_PASS
+	sysICMPV6_FILTER_BLOCKOTHERS = C.ICMPV6_FILTER_BLOCKOTHERS
+	sysICMPV6_FILTER_PASSONLY    = C.ICMPV6_FILTER_PASSONLY
+
+	sysSOL_SOCKET       = C.SOL_SOCKET
+	sysSO_ATTACH_FILTER = C.SO_ATTACH_FILTER
+
+	sizeofKernelSockaddrStorage = C.sizeof_struct___kernel_sockaddr_storage
+	sizeofSockaddrInet6         = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo          = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo           = C.sizeof_struct_ip6_mtuinfo
+	sizeofIPv6FlowlabelReq      = C.sizeof_struct_in6_flowlabel_req
+
+	sizeofIPv6Mreq       = C.sizeof_struct_ipv6_mreq
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+
+	sizeofSockFprog = C.sizeof_struct_sock_fprog
+)
+
+type kernelSockaddrStorage C.struct___kernel_sockaddr_storage
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6FlowlabelReq C.struct_in6_flowlabel_req
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req
+
+type icmpv6Filter C.struct_icmp6_filter
+
+type sockFProg C.struct_sock_fprog
+
+type sockFilter C.struct_sock_filter

vendor/golang.org/x/net/ipv6/defs_netbsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+*/
+import "C"
+
+const (
+	sysIPV6_UNICAST_HOPS   = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF   = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP = C.IPV6_MULTICAST_LOOP
+	sysIPV6_JOIN_GROUP     = C.IPV6_JOIN_GROUP
+	sysIPV6_LEAVE_GROUP    = C.IPV6_LEAVE_GROUP
+	sysIPV6_PORTRANGE      = C.IPV6_PORTRANGE
+	sysICMP6_FILTER        = C.ICMP6_FILTER
+
+	sysIPV6_CHECKSUM = C.IPV6_CHECKSUM
+	sysIPV6_V6ONLY   = C.IPV6_V6ONLY
+
+	sysIPV6_IPSEC_POLICY = C.IPV6_IPSEC_POLICY
+
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+
+	sysIPV6_RECVPKTINFO  = C.IPV6_RECVPKTINFO
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_RECVRTHDR    = C.IPV6_RECVRTHDR
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+	sysIPV6_RECVDSTOPTS  = C.IPV6_RECVDSTOPTS
+
+	sysIPV6_USE_MIN_MTU = C.IPV6_USE_MIN_MTU
+	sysIPV6_RECVPATHMTU = C.IPV6_RECVPATHMTU
+	sysIPV6_PATHMTU     = C.IPV6_PATHMTU
+
+	sysIPV6_PKTINFO  = C.IPV6_PKTINFO
+	sysIPV6_HOPLIMIT = C.IPV6_HOPLIMIT
+	sysIPV6_NEXTHOP  = C.IPV6_NEXTHOP
+	sysIPV6_HOPOPTS  = C.IPV6_HOPOPTS
+	sysIPV6_DSTOPTS  = C.IPV6_DSTOPTS
+	sysIPV6_RTHDR    = C.IPV6_RTHDR
+
+	sysIPV6_RECVTCLASS = C.IPV6_RECVTCLASS
+
+	sysIPV6_TCLASS   = C.IPV6_TCLASS
+	sysIPV6_DONTFRAG = C.IPV6_DONTFRAG
+
+	sysIPV6_PORTRANGE_DEFAULT = C.IPV6_PORTRANGE_DEFAULT
+	sysIPV6_PORTRANGE_HIGH    = C.IPV6_PORTRANGE_HIGH
+	sysIPV6_PORTRANGE_LOW     = C.IPV6_PORTRANGE_LOW
+
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo  = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo   = C.sizeof_struct_ip6_mtuinfo
+
+	sizeofIPv6Mreq = C.sizeof_struct_ipv6_mreq
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+)
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type icmpv6Filter C.struct_icmp6_filter

vendor/golang.org/x/net/ipv6/defs_openbsd.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+*/
+import "C"
+
+const (
+	sysIPV6_UNICAST_HOPS   = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF   = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP = C.IPV6_MULTICAST_LOOP
+	sysIPV6_JOIN_GROUP     = C.IPV6_JOIN_GROUP
+	sysIPV6_LEAVE_GROUP    = C.IPV6_LEAVE_GROUP
+	sysIPV6_PORTRANGE      = C.IPV6_PORTRANGE
+	sysICMP6_FILTER        = C.ICMP6_FILTER
+
+	sysIPV6_CHECKSUM = C.IPV6_CHECKSUM
+	sysIPV6_V6ONLY   = C.IPV6_V6ONLY
+
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+
+	sysIPV6_RECVPKTINFO  = C.IPV6_RECVPKTINFO
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_RECVRTHDR    = C.IPV6_RECVRTHDR
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+	sysIPV6_RECVDSTOPTS  = C.IPV6_RECVDSTOPTS
+
+	sysIPV6_USE_MIN_MTU = C.IPV6_USE_MIN_MTU
+	sysIPV6_RECVPATHMTU = C.IPV6_RECVPATHMTU
+
+	sysIPV6_PATHMTU = C.IPV6_PATHMTU
+
+	sysIPV6_PKTINFO  = C.IPV6_PKTINFO
+	sysIPV6_HOPLIMIT = C.IPV6_HOPLIMIT
+	sysIPV6_NEXTHOP  = C.IPV6_NEXTHOP
+	sysIPV6_HOPOPTS  = C.IPV6_HOPOPTS
+	sysIPV6_DSTOPTS  = C.IPV6_DSTOPTS
+	sysIPV6_RTHDR    = C.IPV6_RTHDR
+
+	sysIPV6_AUTH_LEVEL        = C.IPV6_AUTH_LEVEL
+	sysIPV6_ESP_TRANS_LEVEL   = C.IPV6_ESP_TRANS_LEVEL
+	sysIPV6_ESP_NETWORK_LEVEL = C.IPV6_ESP_NETWORK_LEVEL
+	sysIPSEC6_OUTSA           = C.IPSEC6_OUTSA
+	sysIPV6_RECVTCLASS        = C.IPV6_RECVTCLASS
+
+	sysIPV6_AUTOFLOWLABEL = C.IPV6_AUTOFLOWLABEL
+	sysIPV6_IPCOMP_LEVEL  = C.IPV6_IPCOMP_LEVEL
+
+	sysIPV6_TCLASS   = C.IPV6_TCLASS
+	sysIPV6_DONTFRAG = C.IPV6_DONTFRAG
+	sysIPV6_PIPEX    = C.IPV6_PIPEX
+
+	sysIPV6_RTABLE = C.IPV6_RTABLE
+
+	sysIPV6_PORTRANGE_DEFAULT = C.IPV6_PORTRANGE_DEFAULT
+	sysIPV6_PORTRANGE_HIGH    = C.IPV6_PORTRANGE_HIGH
+	sysIPV6_PORTRANGE_LOW     = C.IPV6_PORTRANGE_LOW
+
+	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo  = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo   = C.sizeof_struct_ip6_mtuinfo
+
+	sizeofIPv6Mreq = C.sizeof_struct_ipv6_mreq
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+)
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type icmpv6Filter C.struct_icmp6_filter

vendor/golang.org/x/net/ipv6/defs_solaris.go

+// 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.
+
+// +build ignore
+
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package ipv6
+
+/*
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+*/
+import "C"
+
+const (
+	sysIPV6_UNICAST_HOPS   = C.IPV6_UNICAST_HOPS
+	sysIPV6_MULTICAST_IF   = C.IPV6_MULTICAST_IF
+	sysIPV6_MULTICAST_HOPS = C.IPV6_MULTICAST_HOPS
+	sysIPV6_MULTICAST_LOOP = C.IPV6_MULTICAST_LOOP
+	sysIPV6_JOIN_GROUP     = C.IPV6_JOIN_GROUP
+	sysIPV6_LEAVE_GROUP    = C.IPV6_LEAVE_GROUP
+
+	sysIPV6_PKTINFO = C.IPV6_PKTINFO
+
+	sysIPV6_HOPLIMIT = C.IPV6_HOPLIMIT
+	sysIPV6_NEXTHOP  = C.IPV6_NEXTHOP
+	sysIPV6_HOPOPTS  = C.IPV6_HOPOPTS
+	sysIPV6_DSTOPTS  = C.IPV6_DSTOPTS
+
+	sysIPV6_RTHDR        = C.IPV6_RTHDR
+	sysIPV6_RTHDRDSTOPTS = C.IPV6_RTHDRDSTOPTS
+
+	sysIPV6_RECVPKTINFO  = C.IPV6_RECVPKTINFO
+	sysIPV6_RECVHOPLIMIT = C.IPV6_RECVHOPLIMIT
+	sysIPV6_RECVHOPOPTS  = C.IPV6_RECVHOPOPTS
+
+	sysIPV6_RECVRTHDR = C.IPV6_RECVRTHDR
+
+	sysIPV6_RECVRTHDRDSTOPTS = C.IPV6_RECVRTHDRDSTOPTS
+
+	sysIPV6_CHECKSUM        = C.IPV6_CHECKSUM
+	sysIPV6_RECVTCLASS      = C.IPV6_RECVTCLASS
+	sysIPV6_USE_MIN_MTU     = C.IPV6_USE_MIN_MTU
+	sysIPV6_DONTFRAG        = C.IPV6_DONTFRAG
+	sysIPV6_SEC_OPT         = C.IPV6_SEC_OPT
+	sysIPV6_SRC_PREFERENCES = C.IPV6_SRC_PREFERENCES
+	sysIPV6_RECVPATHMTU     = C.IPV6_RECVPATHMTU
+	sysIPV6_PATHMTU         = C.IPV6_PATHMTU
+	sysIPV6_TCLASS          = C.IPV6_TCLASS
+	sysIPV6_V6ONLY          = C.IPV6_V6ONLY
+
+	sysIPV6_RECVDSTOPTS = C.IPV6_RECVDSTOPTS
+
+	sysMCAST_JOIN_GROUP         = C.MCAST_JOIN_GROUP
+	sysMCAST_LEAVE_GROUP        = C.MCAST_LEAVE_GROUP
+	sysMCAST_BLOCK_SOURCE       = C.MCAST_BLOCK_SOURCE
+	sysMCAST_UNBLOCK_SOURCE     = C.MCAST_UNBLOCK_SOURCE
+	sysMCAST_JOIN_SOURCE_GROUP  = C.MCAST_JOIN_SOURCE_GROUP
+	sysMCAST_LEAVE_SOURCE_GROUP = C.MCAST_LEAVE_SOURCE_GROUP
+
+	sysIPV6_PREFER_SRC_HOME   = C.IPV6_PREFER_SRC_HOME
+	sysIPV6_PREFER_SRC_COA    = C.IPV6_PREFER_SRC_COA
+	sysIPV6_PREFER_SRC_PUBLIC = C.IPV6_PREFER_SRC_PUBLIC
+	sysIPV6_PREFER_SRC_TMP    = C.IPV6_PREFER_SRC_TMP
+	sysIPV6_PREFER_SRC_NONCGA = C.IPV6_PREFER_SRC_NONCGA
+	sysIPV6_PREFER_SRC_CGA    = C.IPV6_PREFER_SRC_CGA
+
+	sysIPV6_PREFER_SRC_MIPMASK    = C.IPV6_PREFER_SRC_MIPMASK
+	sysIPV6_PREFER_SRC_MIPDEFAULT = C.IPV6_PREFER_SRC_MIPDEFAULT
+	sysIPV6_PREFER_SRC_TMPMASK    = C.IPV6_PREFER_SRC_TMPMASK
+	sysIPV6_PREFER_SRC_TMPDEFAULT = C.IPV6_PREFER_SRC_TMPDEFAULT
+	sysIPV6_PREFER_SRC_CGAMASK    = C.IPV6_PREFER_SRC_CGAMASK
+	sysIPV6_PREFER_SRC_CGADEFAULT = C.IPV6_PREFER_SRC_CGADEFAULT
+
+	sysIPV6_PREFER_SRC_MASK = C.IPV6_PREFER_SRC_MASK
+
+	sysIPV6_PREFER_SRC_DEFAULT = C.IPV6_PREFER_SRC_DEFAULT
+
+	sysIPV6_BOUND_IF   = C.IPV6_BOUND_IF
+	sysIPV6_UNSPEC_SRC = C.IPV6_UNSPEC_SRC
+
+	sysICMP6_FILTER = C.ICMP6_FILTER
+
+	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
+	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
+	sizeofInet6Pktinfo    = C.sizeof_struct_in6_pktinfo
+	sizeofIPv6Mtuinfo     = C.sizeof_struct_ip6_mtuinfo
+
+	sizeofIPv6Mreq       = C.sizeof_struct_ipv6_mreq
+	sizeofGroupReq       = C.sizeof_struct_group_req
+	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
+
+	sizeofICMPv6Filter = C.sizeof_struct_icmp6_filter
+)
+
+type sockaddrStorage C.struct_sockaddr_storage
+
+type sockaddrInet6 C.struct_sockaddr_in6
+
+type inet6Pktinfo C.struct_in6_pktinfo
+
+type ipv6Mtuinfo C.struct_ip6_mtuinfo
+
+type ipv6Mreq C.struct_ipv6_mreq
+
+type groupReq C.struct_group_req
+
+type groupSourceReq C.struct_group_source_req
+
+type icmpv6Filter C.struct_icmp6_filter

vendor/golang.org/x/net/ipv6/gen.go

+// 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.
+
+// +build ignore
+
+//go:generate go run gen.go
+
+// This program generates system adaptation constants and types,
+// internet protocol constants and tables by reading template files
+// and IANA protocol registries.
+package main
+
+import (
+	"bytes"
+	"encoding/xml"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	if err := genzsys(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	if err := geniana(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func genzsys() error {
+	defs := "defs_" + runtime.GOOS + ".go"
+	f, err := os.Open(defs)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	f.Close()
+	cmd := exec.Command("go", "tool", "cgo", "-godefs", defs)
+	b, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+	b, err = format.Source(b)
+	if err != nil {
+		return err
+	}
+	zsys := "zsys_" + runtime.GOOS + ".go"
+	switch runtime.GOOS {
+	case "freebsd", "linux":
+		zsys = "zsys_" + runtime.GOOS + "_" + runtime.GOARCH + ".go"
+	}
+	if err := ioutil.WriteFile(zsys, b, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+var registries = []struct {
+	url   string
+	parse func(io.Writer, io.Reader) error
+}{
+	{
+		"https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xml",
+		parseICMPv6Parameters,
+	},
+}
+
+func geniana() error {
+	var bb bytes.Buffer
+	fmt.Fprintf(&bb, "// go generate gen.go\n")
+	fmt.Fprintf(&bb, "// Code generated by the command above; DO NOT EDIT.\n\n")
+	fmt.Fprintf(&bb, "package ipv6\n\n")
+	for _, r := range registries {
+		resp, err := http.Get(r.url)
+		if err != nil {
+			return err
+		}
+		defer resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			return fmt.Errorf("got HTTP status code %v for %v\n", resp.StatusCode, r.url)
+		}
+		if err := r.parse(&bb, resp.Body); err != nil {
+			return err
+		}
+		fmt.Fprintf(&bb, "\n")
+	}
+	b, err := format.Source(bb.Bytes())
+	if err != nil {
+		return err
+	}
+	if err := ioutil.WriteFile("iana.go", b, 0644); err != nil {
+		return err
+	}
+	return nil
+}
+
+func parseICMPv6Parameters(w io.Writer, r io.Reader) error {
+	dec := xml.NewDecoder(r)
+	var icp icmpv6Parameters
+	if err := dec.Decode(&icp); err != nil {
+		return err
+	}
+	prs := icp.escape()
+	fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+	fmt.Fprintf(w, "const (\n")
+	for _, pr := range prs {
+		if pr.Name == "" {
+			continue
+		}
+		fmt.Fprintf(w, "ICMPType%s ICMPType = %d", pr.Name, pr.Value)
+		fmt.Fprintf(w, "// %s\n", pr.OrigName)
+	}
+	fmt.Fprintf(w, ")\n\n")
+	fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+	fmt.Fprintf(w, "var icmpTypes = map[ICMPType]string{\n")
+	for _, pr := range prs {
+		if pr.Name == "" {
+			continue
+		}
+		fmt.Fprintf(w, "%d: %q,\n", pr.Value, strings.ToLower(pr.OrigName))
+	}
+	fmt.Fprintf(w, "}\n")
+	return nil
+}
+
+type icmpv6Parameters struct {
+	XMLName    xml.Name `xml:"registry"`
+	Title      string   `xml:"title"`
+	Updated    string   `xml:"updated"`
+	Registries []struct {
+		Title   string `xml:"title"`
+		Records []struct {
+			Value string `xml:"value"`
+			Name  string `xml:"name"`
+		} `xml:"record"`
+	} `xml:"registry"`
+}
+
+type canonICMPv6ParamRecord struct {
+	OrigName string
+	Name     string
+	Value    int
+}
+
+func (icp *icmpv6Parameters) escape() []canonICMPv6ParamRecord {
+	id := -1
+	for i, r := range icp.Registries {
+		if strings.Contains(r.Title, "Type") || strings.Contains(r.Title, "type") {
+			id = i
+			break
+		}
+	}
+	if id < 0 {
+		return nil
+	}
+	prs := make([]canonICMPv6ParamRecord, len(icp.Registries[id].Records))
+	sr := strings.NewReplacer(
+		"Messages", "",
+		"Message", "",
+		"ICMP", "",
+		"+", "P",
+		"-", "",
+		"/", "",
+		".", "",
+		" ", "",
+	)
+	for i, pr := range icp.Registries[id].Records {
+		if strings.Contains(pr.Name, "Reserved") ||
+			strings.Contains(pr.Name, "Unassigned") ||
+			strings.Contains(pr.Name, "Deprecated") ||
+			strings.Contains(pr.Name, "Experiment") ||
+			strings.Contains(pr.Name, "experiment") {
+			continue
+		}
+		ss := strings.Split(pr.Name, "\n")
+		if len(ss) > 1 {
+			prs[i].Name = strings.Join(ss, " ")
+		} else {
+			prs[i].Name = ss[0]
+		}
+		s := strings.TrimSpace(prs[i].Name)
+		prs[i].OrigName = s
+		prs[i].Name = sr.Replace(s)
+		prs[i].Value, _ = strconv.Atoi(pr.Value)
+	}
+	return prs
+}

vendor/golang.org/x/sys/unix/mkasm_darwin.go

+// 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.
+
+// +build ignore
+
+// mkasm_darwin.go generates assembly trampolines to call libSystem routines from Go.
+//This program must be run after mksyscall.go.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+)
+
+func main() {
+	in1, err := ioutil.ReadFile("syscall_darwin.go")
+	if err != nil {
+		log.Fatalf("can't open syscall_darwin.go: %s", err)
+	}
+	arch := os.Args[1]
+	in2, err := ioutil.ReadFile(fmt.Sprintf("syscall_darwin_%s.go", arch))
+	if err != nil {
+		log.Fatalf("can't open syscall_darwin_%s.go: %s", arch, err)
+	}
+	in3, err := ioutil.ReadFile(fmt.Sprintf("zsyscall_darwin_%s.go", arch))
+	if err != nil {
+		log.Fatalf("can't open zsyscall_darwin_%s.go: %s", arch, err)
+	}
+	in := string(in1) + string(in2) + string(in3)
+
+	trampolines := map[string]bool{}
+
+	var out bytes.Buffer
+
+	fmt.Fprintf(&out, "// go run mkasm_darwin.go %s\n", strings.Join(os.Args[1:], " "))
+	fmt.Fprintf(&out, "// Code generated by the command above; DO NOT EDIT.\n")
+	fmt.Fprintf(&out, "\n")
+	fmt.Fprintf(&out, "// +build go1.12\n")
+	fmt.Fprintf(&out, "\n")
+	fmt.Fprintf(&out, "#include \"textflag.h\"\n")
+	for _, line := range strings.Split(in, "\n") {
+		if !strings.HasPrefix(line, "func ") || !strings.HasSuffix(line, "_trampoline()") {
+			continue
+		}
+		fn := line[5 : len(line)-13]
+		if !trampolines[fn] {
+			trampolines[fn] = true
+			fmt.Fprintf(&out, "TEXT ·%s_trampoline(SB),NOSPLIT,$0-0\n", fn)
+			fmt.Fprintf(&out, "\tJMP\t%s(SB)\n", fn)
+		}
+	}
+	err = ioutil.WriteFile(fmt.Sprintf("zsyscall_darwin_%s.s", arch), out.Bytes(), 0644)
+	if err != nil {
+		log.Fatalf("can't write zsyscall_darwin_%s.s: %s", arch, err)
+	}
+}

vendor/golang.org/x/sys/unix/mkpost.go

+// 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.
+
+// +build ignore
+
+// mkpost processes the output of cgo -godefs to
+// modify the generated types. It is used to clean up
+// the sys API in an architecture specific manner.
+//
+// mkpost is run after cgo -godefs; see README.md.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/format"
+	"io/ioutil"
+	"log"
+	"os"
+	"regexp"
+)
+
+func main() {
+	// Get the OS and architecture (using GOARCH_TARGET if it exists)
+	goos := os.Getenv("GOOS")
+	goarch := os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+	// Check that we are using the Docker-based build system if we should be.
+	if goos == "linux" {
+		if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
+			os.Stderr.WriteString("In the Docker-based build system, mkpost should not be called directly.\n")
+			os.Stderr.WriteString("See README.md\n")
+			os.Exit(1)
+		}
+	}
+
+	b, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if goos == "aix" {
+		// Replace type of Atim, Mtim and Ctim by Timespec in Stat_t
+		// to avoid having both StTimespec and Timespec.
+		sttimespec := regexp.MustCompile(`_Ctype_struct_st_timespec`)
+		b = sttimespec.ReplaceAll(b, []byte("Timespec"))
+	}
+
+	// Intentionally export __val fields in Fsid and Sigset_t
+	valRegex := regexp.MustCompile(`type (Fsid|Sigset_t) struct {(\s+)X__(bits|val)(\s+\S+\s+)}`)
+	b = valRegex.ReplaceAll(b, []byte("type $1 struct {${2}Val$4}"))
+
+	// Intentionally export __fds_bits field in FdSet
+	fdSetRegex := regexp.MustCompile(`type (FdSet) struct {(\s+)X__fds_bits(\s+\S+\s+)}`)
+	b = fdSetRegex.ReplaceAll(b, []byte("type $1 struct {${2}Bits$3}"))
+
+	// If we have empty Ptrace structs, we should delete them. Only s390x emits
+	// nonempty Ptrace structs.
+	ptraceRexexp := regexp.MustCompile(`type Ptrace((Psw|Fpregs|Per) struct {\s*})`)
+	b = ptraceRexexp.ReplaceAll(b, nil)
+
+	// Replace the control_regs union with a blank identifier for now.
+	controlRegsRegex := regexp.MustCompile(`(Control_regs)\s+\[0\]uint64`)
+	b = controlRegsRegex.ReplaceAll(b, []byte("_ [0]uint64"))
+
+	// Remove fields that are added by glibc
+	// Note that this is unstable as the identifers are private.
+	removeFieldsRegex := regexp.MustCompile(`X__glibc\S*`)
+	b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Convert [65]int8 to [65]byte in Utsname members to simplify
+	// conversion to string; see golang.org/issue/20753
+	convertUtsnameRegex := regexp.MustCompile(`((Sys|Node|Domain)name|Release|Version|Machine)(\s+)\[(\d+)\]u?int8`)
+	b = convertUtsnameRegex.ReplaceAll(b, []byte("$1$3[$4]byte"))
+
+	// Convert [1024]int8 to [1024]byte in Ptmget members
+	convertPtmget := regexp.MustCompile(`([SC]n)(\s+)\[(\d+)\]u?int8`)
+	b = convertPtmget.ReplaceAll(b, []byte("$1[$3]byte"))
+
+	// Remove spare fields (e.g. in Statx_t)
+	spareFieldsRegex := regexp.MustCompile(`X__spare\S*`)
+	b = spareFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Remove cgo padding fields
+	removePaddingFieldsRegex := regexp.MustCompile(`Pad_cgo_\d+`)
+	b = removePaddingFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Remove padding, hidden, or unused fields
+	removeFieldsRegex = regexp.MustCompile(`\b(X_\S+|Padding)`)
+	b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
+
+	// Remove the first line of warning from cgo
+	b = b[bytes.IndexByte(b, '\n')+1:]
+	// Modify the command in the header to include:
+	//  mkpost, our own warning, and a build tag.
+	replacement := fmt.Sprintf(`$1 | go run mkpost.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s,%s`, goarch, goos)
+	cgoCommandRegex := regexp.MustCompile(`(cgo -godefs .*)`)
+	b = cgoCommandRegex.ReplaceAll(b, []byte(replacement))
+
+	// Rename Stat_t time fields
+	if goos == "freebsd" && goarch == "386" {
+		// Hide Stat_t.[AMCB]tim_ext fields
+		renameStatTimeExtFieldsRegex := regexp.MustCompile(`[AMCB]tim_ext`)
+		b = renameStatTimeExtFieldsRegex.ReplaceAll(b, []byte("_"))
+	}
+	renameStatTimeFieldsRegex := regexp.MustCompile(`([AMCB])(?:irth)?time?(?:spec)?\s+(Timespec|StTimespec)`)
+	b = renameStatTimeFieldsRegex.ReplaceAll(b, []byte("${1}tim ${2}"))
+
+	// gofmt
+	b, err = format.Source(b)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	os.Stdout.Write(b)
+}

vendor/golang.org/x/sys/unix/mksyscall.go

+// 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.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_darwin.go) and generates system call bodies.
+The prototypes are marked by lines beginning with "//sys"
+and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named errno.
+
+A line beginning with //sysnb is like //sys, except that the
+goroutine will not be suspended during the execution of the system
+call.  This must only be used for system calls which can never
+block, as otherwise the system call could cause all goroutines to
+hang.
+*/
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32       = flag.Bool("b32", false, "32bit big-endian")
+	l32       = flag.Bool("l32", false, "32bit little-endian")
+	plan9     = flag.Bool("plan9", false, "plan9")
+	openbsd   = flag.Bool("openbsd", false, "openbsd")
+	netbsd    = flag.Bool("netbsd", false, "netbsd")
+	dragonfly = flag.Bool("dragonfly", false, "dragonfly")
+	arm       = flag.Bool("arm", false, "arm") // 64-bit value should use (even, odd)-pair
+	tags      = flag.String("tags", "", "build tags")
+	filename  = flag.String("output", "", "output file name (standard output if omitted)")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	// Get the OS and architecture (using GOARCH_TARGET if it exists)
+	goos := os.Getenv("GOOS")
+	if goos == "" {
+		fmt.Fprintln(os.Stderr, "GOOS not defined in environment")
+		os.Exit(1)
+	}
+	goarch := os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+
+	// Check that we are using the Docker-based build system if we should
+	if goos == "linux" {
+		if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
+			fmt.Fprintf(os.Stderr, "In the Docker-based build system, mksyscall should not be called directly.\n")
+			fmt.Fprintf(os.Stderr, "See README.md\n")
+			os.Exit(1)
+		}
+	}
+
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	libc := false
+	if goos == "darwin" && strings.Contains(buildTags(), ",go1.12") {
+		libc = true
+	}
+	trampolines := map[string]bool{}
+
+	text := ""
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, errno error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*((?i)SYS_[A-Z0-9_]+))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, sysname := f[2], f[3], f[4], f[5]
+
+			// ClockGettime doesn't have a syscall number on Darwin, only generate libc wrappers.
+			if goos == "darwin" && !libc && funct == "ClockGettime" {
+				continue
+			}
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+			// Go function header.
+			outDecl := ""
+			if len(out) > 0 {
+				outDecl = fmt.Sprintf(" (%s)", strings.Join(out, ", "))
+			}
+			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outDecl)
+
+			// Check if err return available
+			errvar := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+					break
+				}
+			}
+
+			// Prepare arguments to Syscall.
+			var args []string
+			n := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
+				} else if p.Type == "string" && errvar != "" {
+					text += fmt.Sprintf("\tvar _p%d *byte\n", n)
+					text += fmt.Sprintf("\t_p%d, %s = BytePtrFromString(%s)\n", n, errvar, p.Name)
+					text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					text += fmt.Sprintf("\tvar _p%d *byte\n", n)
+					text += fmt.Sprintf("\t_p%d, _ = BytePtrFromString(%s)\n", n, p.Name)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass dummy pointer in that case.
+					// Used to pass nil, but some OSes or simulators reject write(fd, nil, 0).
+					text += fmt.Sprintf("\tvar _p%d unsafe.Pointer\n", n)
+					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = unsafe.Pointer(&%s[0])\n\t}", p.Name, n, p.Name)
+					text += fmt.Sprintf(" else {\n\t\t_p%d = unsafe.Pointer(&_zero)\n\t}\n", n)
+					args = append(args, fmt.Sprintf("uintptr(_p%d)", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
+					n++
+				} else if p.Type == "int64" && (*openbsd || *netbsd) {
+					args = append(args, "0")
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else if endianness == "little-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+					}
+				} else if p.Type == "int64" && *dragonfly {
+					if regexp.MustCompile(`^(?i)extp(read|write)`).FindStringSubmatch(funct) == nil {
+						args = append(args, "0")
+					}
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else if endianness == "little-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+					}
+				} else if (p.Type == "int64" || p.Type == "uint64") && endianness != "" {
+					if len(args)%2 == 1 && *arm {
+						// arm abi specifies 64-bit argument uses
+						// (even, odd) pair
+						args = append(args, "0")
+					}
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					}
+				} else {
+					args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+				}
+			}
+
+			// Determine which form to use; pad args with zeros.
+			asm := "Syscall"
+			if nonblock != nil {
+				if errvar == "" && goos == "linux" {
+					asm = "RawSyscallNoError"
+				} else {
+					asm = "RawSyscall"
+				}
+			} else {
+				if errvar == "" && goos == "linux" {
+					asm = "SyscallNoError"
+				}
+			}
+			if len(args) <= 3 {
+				for len(args) < 3 {
+					args = append(args, "0")
+				}
+			} else if len(args) <= 6 {
+				asm += "6"
+				for len(args) < 6 {
+					args = append(args, "0")
+				}
+			} else if len(args) <= 9 {
+				asm += "9"
+				for len(args) < 9 {
+					args = append(args, "0")
+				}
+			} else {
+				fmt.Fprintf(os.Stderr, "%s:%s too many arguments to system call\n", path, funct)
+			}
+
+			// System call number.
+			if sysname == "" {
+				sysname = "SYS_" + funct
+				sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+				sysname = strings.ToUpper(sysname)
+			}
+
+			var libcFn string
+			if libc {
+				asm = "syscall_" + strings.ToLower(asm[:1]) + asm[1:] // internal syscall call
+				sysname = strings.TrimPrefix(sysname, "SYS_")         // remove SYS_
+				sysname = strings.ToLower(sysname)                    // lowercase
+				if sysname == "getdirentries64" {
+					// Special case - libSystem name and
+					// raw syscall name don't match.
+					sysname = "__getdirentries64"
+				}
+				libcFn = sysname
+				sysname = "funcPC(libc_" + sysname + "_trampoline)"
+			}
+
+			// Actual call.
+			arglist := strings.Join(args, ", ")
+			call := fmt.Sprintf("%s(%s, %s)", asm, sysname, arglist)
+
+			// Assign return values.
+			body := ""
+			ret := []string{"_", "_", "_"}
+			doErrno := false
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" && !*plan9 {
+					reg = "e1"
+					ret[2] = reg
+					doErrno = true
+				} else if p.Name == "err" && *plan9 {
+					ret[0] = "r0"
+					ret[2] = "e1"
+					break
+				} else {
+					reg = fmt.Sprintf("r%d", i)
+					ret[i] = reg
+				}
+				if p.Type == "bool" {
+					reg = fmt.Sprintf("%s != 0", reg)
+				}
+				if p.Type == "int64" && endianness != "" {
+					// 64-bit number in r1:r0 or r0:r1.
+					if i+2 > len(out) {
+						fmt.Fprintf(os.Stderr, "%s:%s not enough registers for int64 return\n", path, funct)
+					}
+					if endianness == "big-endian" {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
+					} else {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
+					}
+					ret[i] = fmt.Sprintf("r%d", i)
+					ret[i+1] = fmt.Sprintf("r%d", i+1)
+				}
+				if reg != "e1" || *plan9 {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+			if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
+				text += fmt.Sprintf("\t%s\n", call)
+			} else {
+				if errvar == "" && goos == "linux" {
+					// raw syscall without error on Linux, see golang.org/issue/22924
+					text += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], call)
+				} else {
+					text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
+				}
+			}
+			text += body
+
+			if *plan9 && ret[2] == "e1" {
+				text += "\tif int32(r0) == -1 {\n"
+				text += "\t\terr = e1\n"
+				text += "\t}\n"
+			} else if doErrno {
+				text += "\tif e1 != 0 {\n"
+				text += "\t\terr = errnoErr(e1)\n"
+				text += "\t}\n"
+			}
+			text += "\treturn\n"
+			text += "}\n\n"
+
+			if libc && !trampolines[libcFn] {
+				// some system calls share a trampoline, like read and readlen.
+				trampolines[libcFn] = true
+				// Declare assembly trampoline.
+				text += fmt.Sprintf("func libc_%s_trampoline()\n", libcFn)
+				// Assembly trampoline calls the libc_* function, which this magic
+				// redirects to use the function from libSystem.
+				text += fmt.Sprintf("//go:linkname libc_%s libc_%s\n", libcFn, libcFn)
+				text += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"/usr/lib/libSystem.B.dylib\"\n", libcFn, libcFn)
+				text += "\n"
+			}
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package unix
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+var _ syscall.Errno
+
+%s
+`

vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go

+// 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.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_aix.go) and generates system call bodies.
+The prototypes are marked by lines beginning with "//sys"
+and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named err.
+	* If go func name needs to be different than its libc name,
+	* or the function is not in libc, name could be specified
+	* at the end, after "=" sign, like
+	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+*/
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32  = flag.Bool("b32", false, "32bit big-endian")
+	l32  = flag.Bool("l32", false, "32bit little-endian")
+	aix  = flag.Bool("aix", false, "aix")
+	tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall_aix_ppc.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_aix_ppc.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	pack := ""
+	text := ""
+	cExtern := "/*\n#include <stdint.h>\n#include <stddef.h>\n"
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+				pack = p[1]
+			}
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, err error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			inps = strings.Join(in, ", ")
+			outps = strings.Join(out, ", ")
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+			// Check if value return, err return available
+			errvar := ""
+			retvar := ""
+			rettype := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+				} else {
+					retvar = p.Name
+					rettype = p.Type
+				}
+			}
+
+			// System call name.
+			if sysname == "" {
+				sysname = funct
+			}
+			sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+			cRettype := ""
+			if rettype == "unsafe.Pointer" {
+				cRettype = "uintptr_t"
+			} else if rettype == "uintptr" {
+				cRettype = "uintptr_t"
+			} else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
+				cRettype = "uintptr_t"
+			} else if rettype == "int" {
+				cRettype = "int"
+			} else if rettype == "int32" {
+				cRettype = "int"
+			} else if rettype == "int64" {
+				cRettype = "long long"
+			} else if rettype == "uint32" {
+				cRettype = "unsigned int"
+			} else if rettype == "uint64" {
+				cRettype = "unsigned long long"
+			} else {
+				cRettype = "int"
+			}
+			if sysname == "exit" {
+				cRettype = "void"
+			}
+
+			// Change p.Types to c
+			var cIn []string
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "string" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t", "size_t")
+				} else if p.Type == "unsafe.Pointer" {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "uintptr" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "int" {
+					cIn = append(cIn, "int")
+				} else if p.Type == "int32" {
+					cIn = append(cIn, "int")
+				} else if p.Type == "int64" {
+					cIn = append(cIn, "long long")
+				} else if p.Type == "uint32" {
+					cIn = append(cIn, "unsigned int")
+				} else if p.Type == "uint64" {
+					cIn = append(cIn, "unsigned long long")
+				} else {
+					cIn = append(cIn, "int")
+				}
+			}
+
+			if funct != "fcntl" && funct != "FcntlInt" && funct != "readlen" && funct != "writelen" {
+				if sysname == "select" {
+					// select is a keyword of Go. Its name is
+					// changed to c_select.
+					cExtern += "#define c_select select\n"
+				}
+				// Imports of system calls from libc
+				cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
+				cIn := strings.Join(cIn, ", ")
+				cExtern += fmt.Sprintf("(%s);\n", cIn)
+			}
+
+			// So file name.
+			if *aix {
+				if modname == "" {
+					modname = "libc.a/shr_64.o"
+				} else {
+					fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
+					os.Exit(1)
+				}
+			}
+
+			strconvfunc := "C.CString"
+
+			// Go function header.
+			if outps != "" {
+				outps = fmt.Sprintf(" (%s)", outps)
+			}
+			if text != "" {
+				text += "\n"
+			}
+
+			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
+
+			// Prepare arguments to Syscall.
+			var args []string
+			n := 0
+			argN := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, "C.uintptr_t(uintptr(unsafe.Pointer("+p.Name+")))")
+				} else if p.Type == "string" && errvar != "" {
+					text += fmt.Sprintf("\t_p%d := uintptr(unsafe.Pointer(%s(%s)))\n", n, strconvfunc, p.Name)
+					args = append(args, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					text += fmt.Sprintf("\t_p%d := uintptr(unsafe.Pointer(%s(%s)))\n", n, strconvfunc, p.Name)
+					args = append(args, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass nil in that case.
+					text += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
+					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(unsafe.Pointer(_p%d)))", n))
+					n++
+					text += fmt.Sprintf("\tvar _p%d int\n", n)
+					text += fmt.Sprintf("\t_p%d = len(%s)\n", n, p.Name)
+					args = append(args, fmt.Sprintf("C.size_t(_p%d)", n))
+					n++
+				} else if p.Type == "int64" && endianness != "" {
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					}
+					n++
+				} else if p.Type == "bool" {
+					text += fmt.Sprintf("\tvar _p%d uint32\n", n)
+					text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
+					args = append(args, fmt.Sprintf("_p%d", n))
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(%s))", p.Name))
+				} else if p.Type == "unsafe.Pointer" {
+					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(%s))", p.Name))
+				} else if p.Type == "int" {
+					if (argN == 2) && ((funct == "readlen") || (funct == "writelen")) {
+						args = append(args, fmt.Sprintf("C.size_t(%s)", p.Name))
+					} else if argN == 0 && funct == "fcntl" {
+						args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+					} else if (argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt")) {
+						args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
+					}
+				} else if p.Type == "int32" {
+					args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
+				} else if p.Type == "int64" {
+					args = append(args, fmt.Sprintf("C.longlong(%s)", p.Name))
+				} else if p.Type == "uint32" {
+					args = append(args, fmt.Sprintf("C.uint(%s)", p.Name))
+				} else if p.Type == "uint64" {
+					args = append(args, fmt.Sprintf("C.ulonglong(%s)", p.Name))
+				} else if p.Type == "uintptr" {
+					args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else {
+					args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
+				}
+				argN++
+			}
+
+			// Actual call.
+			arglist := strings.Join(args, ", ")
+			call := ""
+			if sysname == "exit" {
+				if errvar != "" {
+					call += "er :="
+				} else {
+					call += ""
+				}
+			} else if errvar != "" {
+				call += "r0,er :="
+			} else if retvar != "" {
+				call += "r0,_ :="
+			} else {
+				call += ""
+			}
+			if sysname == "select" {
+				// select is a keyword of Go. Its name is
+				// changed to c_select.
+				call += fmt.Sprintf("C.c_%s(%s)", sysname, arglist)
+			} else {
+				call += fmt.Sprintf("C.%s(%s)", sysname, arglist)
+			}
+
+			// Assign return values.
+			body := ""
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" {
+					reg = "e1"
+				} else {
+					reg = "r0"
+				}
+				if reg != "e1" {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+
+			// verify return
+			if sysname != "exit" && errvar != "" {
+				if regexp.MustCompile(`^uintptr`).FindStringSubmatch(cRettype) != nil {
+					body += "\tif (uintptr(r0) ==^uintptr(0) && er != nil) {\n"
+					body += fmt.Sprintf("\t\t%s = er\n", errvar)
+					body += "\t}\n"
+				} else {
+					body += "\tif (r0 ==-1 && er != nil) {\n"
+					body += fmt.Sprintf("\t\t%s = er\n", errvar)
+					body += "\t}\n"
+				}
+			} else if errvar != "" {
+				body += "\tif (er != nil) {\n"
+				body += fmt.Sprintf("\t\t%s = er\n", errvar)
+				body += "\t}\n"
+			}
+
+			text += fmt.Sprintf("\t%s\n", call)
+			text += body
+
+			text += "\treturn\n"
+			text += "}\n"
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	imp := ""
+	if pack != "unix" {
+		imp = "import \"golang.org/x/sys/unix\"\n"
+
+	}
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), pack, cExtern, imp, text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+
+%s
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+
+%s
+
+%s
+`

vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go

+// 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.
+
+// +build ignore
+
+/*
+This program reads a file containing function prototypes
+(like syscall_aix.go) and generates system call bodies.
+The prototypes are marked by lines beginning with "//sys"
+and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named err.
+	* If go func name needs to be different than its libc name,
+	* or the function is not in libc, name could be specified
+	* at the end, after "=" sign, like
+	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+
+
+This program will generate three files and handle both gc and gccgo implementation:
+  - zsyscall_aix_ppc64.go: the common part of each implementation (error handler, pointer creation)
+  - zsyscall_aix_ppc64_gc.go: gc part with //go_cgo_import_dynamic and a call to syscall6
+  - zsyscall_aix_ppc64_gccgo.go: gccgo part with C function and conversion to C type.
+
+ The generated code looks like this
+
+zsyscall_aix_ppc64.go
+func asyscall(...) (n int, err error) {
+	 // Pointer Creation
+	 r1, e1 := callasyscall(...)
+	 // Type Conversion
+	 // Error Handler
+	 return
+}
+
+zsyscall_aix_ppc64_gc.go
+//go:cgo_import_dynamic libc_asyscall asyscall "libc.a/shr_64.o"
+//go:linkname libc_asyscall libc_asyscall
+var asyscall syscallFunc
+
+func callasyscall(...) (r1 uintptr, e1 Errno) {
+	 r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_asyscall)), "nb_args", ... )
+	 return
+}
+
+zsyscall_aix_ppc64_ggcgo.go
+
+// int asyscall(...)
+
+import "C"
+
+func callasyscall(...) (r1 uintptr, e1 Errno) {
+	 r1 = uintptr(C.asyscall(...))
+	 e1 = syscall.GetErrno()
+	 return
+}
+*/
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32  = flag.Bool("b32", false, "32bit big-endian")
+	l32  = flag.Bool("l32", false, "32bit little-endian")
+	aix  = flag.Bool("aix", false, "aix")
+	tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall_aix_ppc64.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_aix_ppc64.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	pack := ""
+	// GCCGO
+	textgccgo := ""
+	cExtern := "/*\n#include <stdint.h>\n"
+	// GC
+	textgc := ""
+	dynimports := ""
+	linknames := ""
+	var vars []string
+	// COMMON
+	textcommon := ""
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+				pack = p[1]
+			}
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, err error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			inps = strings.Join(in, ", ")
+			outps = strings.Join(out, ", ")
+
+			if sysname == "" {
+				sysname = funct
+			}
+
+			onlyCommon := false
+			if funct == "readlen" || funct == "writelen" || funct == "FcntlInt" || funct == "FcntlFlock" {
+				// This function call another syscall which is already implemented.
+				// Therefore, the gc and gccgo part must not be generated.
+				onlyCommon = true
+			}
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+
+			textcommon += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+			if !onlyCommon {
+				textgccgo += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+				textgc += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+			}
+
+			// Check if value return, err return available
+			errvar := ""
+			rettype := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+				} else {
+					rettype = p.Type
+				}
+			}
+
+			sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
+			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+			// GCCGO Prototype return type
+			cRettype := ""
+			if rettype == "unsafe.Pointer" {
+				cRettype = "uintptr_t"
+			} else if rettype == "uintptr" {
+				cRettype = "uintptr_t"
+			} else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
+				cRettype = "uintptr_t"
+			} else if rettype == "int" {
+				cRettype = "int"
+			} else if rettype == "int32" {
+				cRettype = "int"
+			} else if rettype == "int64" {
+				cRettype = "long long"
+			} else if rettype == "uint32" {
+				cRettype = "unsigned int"
+			} else if rettype == "uint64" {
+				cRettype = "unsigned long long"
+			} else {
+				cRettype = "int"
+			}
+			if sysname == "exit" {
+				cRettype = "void"
+			}
+
+			// GCCGO Prototype arguments type
+			var cIn []string
+			for i, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "string" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t", "size_t")
+				} else if p.Type == "unsafe.Pointer" {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "uintptr" {
+					cIn = append(cIn, "uintptr_t")
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
+					cIn = append(cIn, "uintptr_t")
+				} else if p.Type == "int" {
+					if (i == 0 || i == 2) && funct == "fcntl" {
+						// These fcntl arguments needs to be uintptr to be able to call FcntlInt and FcntlFlock
+						cIn = append(cIn, "uintptr_t")
+					} else {
+						cIn = append(cIn, "int")
+					}
+
+				} else if p.Type == "int32" {
+					cIn = append(cIn, "int")
+				} else if p.Type == "int64" {
+					cIn = append(cIn, "long long")
+				} else if p.Type == "uint32" {
+					cIn = append(cIn, "unsigned int")
+				} else if p.Type == "uint64" {
+					cIn = append(cIn, "unsigned long long")
+				} else {
+					cIn = append(cIn, "int")
+				}
+			}
+
+			if !onlyCommon {
+				// GCCGO Prototype Generation
+				// Imports of system calls from libc
+				if sysname == "select" {
+					// select is a keyword of Go. Its name is
+					// changed to c_select.
+					cExtern += "#define c_select select\n"
+				}
+				cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
+				cIn := strings.Join(cIn, ", ")
+				cExtern += fmt.Sprintf("(%s);\n", cIn)
+			}
+			// GC Library name
+			if modname == "" {
+				modname = "libc.a/shr_64.o"
+			} else {
+				fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
+				os.Exit(1)
+			}
+			sysvarname := fmt.Sprintf("libc_%s", sysname)
+
+			if !onlyCommon {
+				// GC Runtime import of function to allow cross-platform builds.
+				dynimports += fmt.Sprintf("//go:cgo_import_dynamic %s %s \"%s\"\n", sysvarname, sysname, modname)
+				// GC Link symbol to proc address variable.
+				linknames += fmt.Sprintf("//go:linkname %s %s\n", sysvarname, sysvarname)
+				// GC Library proc address variable.
+				vars = append(vars, sysvarname)
+			}
+
+			strconvfunc := "BytePtrFromString"
+			strconvtype := "*byte"
+
+			// Go function header.
+			if outps != "" {
+				outps = fmt.Sprintf(" (%s)", outps)
+			}
+			if textcommon != "" {
+				textcommon += "\n"
+			}
+
+			textcommon += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
+
+			// Prepare arguments tocall.
+			var argscommon []string // Arguments in the common part
+			var argscall []string   // Arguments for call prototype
+			var argsgc []string     // Arguments for gc call (with syscall6)
+			var argsgccgo []string  // Arguments for gccgo call (with C.name_of_syscall)
+			n := 0
+			argN := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.Name))
+					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+					argsgc = append(argsgc, p.Name)
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else if p.Type == "string" && errvar != "" {
+					textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+					textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					argscall = append(argscall, fmt.Sprintf("_p%d uintptr ", n))
+					argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+					textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n))
+					argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
+					n++
+				} else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass nil in that case.
+					textcommon += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
+					textcommon += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("len(%s)", p.Name))
+					argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n), fmt.Sprintf("_lenp%d int", n))
+					argsgc = append(argsgc, fmt.Sprintf("_p%d", n), fmt.Sprintf("uintptr(_lenp%d)", n))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n), fmt.Sprintf("C.size_t(_lenp%d)", n))
+					n++
+				} else if p.Type == "int64" && endianness != "" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses int64 with 32 bits mode. Case not yet implemented\n")
+				} else if p.Type == "bool" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses bool. Case not yet implemented\n")
+				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil || p.Type == "unsafe.Pointer" {
+					argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
+					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+					argsgc = append(argsgc, p.Name)
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else if p.Type == "int" {
+					if (argN == 0 || argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt") || (funct == "FcntlFlock")) {
+						// These fcntl arguments need to be uintptr to be able to call FcntlInt and FcntlFlock
+						argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
+						argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+						argsgc = append(argsgc, p.Name)
+						argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+
+					} else {
+						argscommon = append(argscommon, p.Name)
+						argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
+						argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+						argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+					}
+				} else if p.Type == "int32" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s int32", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+				} else if p.Type == "int64" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s int64", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.longlong(%s)", p.Name))
+				} else if p.Type == "uint32" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s uint32", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uint(%s)", p.Name))
+				} else if p.Type == "uint64" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s uint64", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.ulonglong(%s)", p.Name))
+				} else if p.Type == "uintptr" {
+					argscommon = append(argscommon, p.Name)
+					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
+					argsgc = append(argsgc, p.Name)
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
+				} else {
+					argscommon = append(argscommon, fmt.Sprintf("int(%s)", p.Name))
+					argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
+					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
+					argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
+				}
+				argN++
+			}
+			nargs := len(argsgc)
+
+			// COMMON function generation
+			argscommonlist := strings.Join(argscommon, ", ")
+			callcommon := fmt.Sprintf("call%s(%s)", sysname, argscommonlist)
+			ret := []string{"_", "_"}
+			body := ""
+			doErrno := false
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" {
+					reg = "e1"
+					ret[1] = reg
+					doErrno = true
+				} else {
+					reg = "r0"
+					ret[0] = reg
+				}
+				if p.Type == "bool" {
+					reg = fmt.Sprintf("%s != 0", reg)
+				}
+				if reg != "e1" {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+			if ret[0] == "_" && ret[1] == "_" {
+				textcommon += fmt.Sprintf("\t%s\n", callcommon)
+			} else {
+				textcommon += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], callcommon)
+			}
+			textcommon += body
+
+			if doErrno {
+				textcommon += "\tif e1 != 0 {\n"
+				textcommon += "\t\terr = errnoErr(e1)\n"
+				textcommon += "\t}\n"
+			}
+			textcommon += "\treturn\n"
+			textcommon += "}\n"
+
+			if onlyCommon {
+				continue
+			}
+
+			// CALL Prototype
+			callProto := fmt.Sprintf("func call%s(%s) (r1 uintptr, e1 Errno) {\n", sysname, strings.Join(argscall, ", "))
+
+			// GC function generation
+			asm := "syscall6"
+			if nonblock != nil {
+				asm = "rawSyscall6"
+			}
+
+			if len(argsgc) <= 6 {
+				for len(argsgc) < 6 {
+					argsgc = append(argsgc, "0")
+				}
+			} else {
+				fmt.Fprintf(os.Stderr, "%s: too many arguments to system call", funct)
+				os.Exit(1)
+			}
+			argsgclist := strings.Join(argsgc, ", ")
+			callgc := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, argsgclist)
+
+			textgc += callProto
+			textgc += fmt.Sprintf("\tr1, _, e1 = %s\n", callgc)
+			textgc += "\treturn\n}\n"
+
+			// GCCGO function generation
+			argsgccgolist := strings.Join(argsgccgo, ", ")
+			var callgccgo string
+			if sysname == "select" {
+				// select is a keyword of Go. Its name is
+				// changed to c_select.
+				callgccgo = fmt.Sprintf("C.c_%s(%s)", sysname, argsgccgolist)
+			} else {
+				callgccgo = fmt.Sprintf("C.%s(%s)", sysname, argsgccgolist)
+			}
+			textgccgo += callProto
+			textgccgo += fmt.Sprintf("\tr1 = uintptr(%s)\n", callgccgo)
+			textgccgo += "\te1 = syscall.GetErrno()\n"
+			textgccgo += "\treturn\n}\n"
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	imp := ""
+	if pack != "unix" {
+		imp = "import \"golang.org/x/sys/unix\"\n"
+
+	}
+
+	// Print zsyscall_aix_ppc64.go
+	err := ioutil.WriteFile("zsyscall_aix_ppc64.go",
+		[]byte(fmt.Sprintf(srcTemplate1, cmdLine(), buildTags(), pack, imp, textcommon)),
+		0644)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	// Print zsyscall_aix_ppc64_gc.go
+	vardecls := "\t" + strings.Join(vars, ",\n\t")
+	vardecls += " syscallFunc"
+	err = ioutil.WriteFile("zsyscall_aix_ppc64_gc.go",
+		[]byte(fmt.Sprintf(srcTemplate2, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, textgc)),
+		0644)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	// Print zsyscall_aix_ppc64_gccgo.go
+	err = ioutil.WriteFile("zsyscall_aix_ppc64_gccgo.go",
+		[]byte(fmt.Sprintf(srcTemplate3, cmdLine(), buildTags(), pack, cExtern, imp, textgccgo)),
+		0644)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+}
+
+const srcTemplate1 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+import (
+	"unsafe"
+)
+
+
+%s
+
+%s
+`
+const srcTemplate2 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+// +build !gccgo
+
+package %s
+
+import (
+	"unsafe"
+)
+%s
+%s
+%s
+type syscallFunc uintptr
+
+var (
+%s
+)
+
+// Implemented in runtime/syscall_aix.go.
+func rawSyscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+func syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+
+%s
+`
+const srcTemplate3 = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+// +build gccgo
+
+package %s
+
+%s
+*/
+import "C"
+import (
+	"syscall"
+)
+
+
+%s
+
+%s
+`

vendor/golang.org/x/sys/unix/mksyscall_solaris.go

+// 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.
+
+// +build ignore
+
+/*
+ This program reads a file containing function prototypes
+ (like syscall_solaris.go) and generates system call bodies.
+ The prototypes are marked by lines beginning with "//sys"
+ and read like func declarations if //sys is replaced by func, but:
+	* The parameter lists must give a name for each argument.
+	  This includes return parameters.
+	* The parameter lists must give a type for each argument:
+	  the (x, y, z int) shorthand is not allowed.
+	* If the return parameter is an error number, it must be named err.
+	* If go func name needs to be different than its libc name,
+	* or the function is not in libc, name could be specified
+	* at the end, after "=" sign, like
+	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
+*/
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	b32  = flag.Bool("b32", false, "32bit big-endian")
+	l32  = flag.Bool("l32", false, "32bit little-endian")
+	tags = flag.String("tags", "", "build tags")
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksyscall_solaris.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return *tags
+}
+
+// Param is function parameter
+type Param struct {
+	Name string
+	Type string
+}
+
+// usage prints the program usage
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_solaris.go [-b32 | -l32] [-tags x,y] [file ...]\n")
+	os.Exit(1)
+}
+
+// parseParamList parses parameter list and returns a slice of parameters
+func parseParamList(list string) []string {
+	list = strings.TrimSpace(list)
+	if list == "" {
+		return []string{}
+	}
+	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
+}
+
+// parseParam splits a parameter into name and type
+func parseParam(p string) Param {
+	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
+	if ps == nil {
+		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
+		os.Exit(1)
+	}
+	return Param{ps[1], ps[2]}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if len(flag.Args()) <= 0 {
+		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
+		usage()
+	}
+
+	endianness := ""
+	if *b32 {
+		endianness = "big-endian"
+	} else if *l32 {
+		endianness = "little-endian"
+	}
+
+	pack := ""
+	text := ""
+	dynimports := ""
+	linknames := ""
+	var vars []string
+	for _, path := range flag.Args() {
+		file, err := os.Open(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			t := s.Text()
+			t = strings.TrimSpace(t)
+			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
+			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
+				pack = p[1]
+			}
+			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
+			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
+				continue
+			}
+
+			// Line must be of the form
+			//	func Open(path string, mode int, perm int) (fd int, err error)
+			// Split into name, in params, out params.
+			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
+			if f == nil {
+				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
+				os.Exit(1)
+			}
+			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
+
+			// Split argument lists on comma.
+			in := parseParamList(inps)
+			out := parseParamList(outps)
+
+			inps = strings.Join(in, ", ")
+			outps = strings.Join(out, ", ")
+
+			// Try in vain to keep people from editing this file.
+			// The theory is that they jump into the middle of the file
+			// without reading the header.
+			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
+
+			// So file name.
+			if modname == "" {
+				modname = "libc"
+			}
+
+			// System call name.
+			if sysname == "" {
+				sysname = funct
+			}
+
+			// System call pointer variable name.
+			sysvarname := fmt.Sprintf("proc%s", sysname)
+
+			strconvfunc := "BytePtrFromString"
+			strconvtype := "*byte"
+
+			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
+
+			// Runtime import of function to allow cross-platform builds.
+			dynimports += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"%s.so\"\n", sysname, sysname, modname)
+			// Link symbol to proc address variable.
+			linknames += fmt.Sprintf("//go:linkname %s libc_%s\n", sysvarname, sysname)
+			// Library proc address variable.
+			vars = append(vars, sysvarname)
+
+			// Go function header.
+			outlist := strings.Join(out, ", ")
+			if outlist != "" {
+				outlist = fmt.Sprintf(" (%s)", outlist)
+			}
+			if text != "" {
+				text += "\n"
+			}
+			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outlist)
+
+			// Check if err return available
+			errvar := ""
+			for _, param := range out {
+				p := parseParam(param)
+				if p.Type == "error" {
+					errvar = p.Name
+					continue
+				}
+			}
+
+			// Prepare arguments to Syscall.
+			var args []string
+			n := 0
+			for _, param := range in {
+				p := parseParam(param)
+				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
+					args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
+				} else if p.Type == "string" && errvar != "" {
+					text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					text += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
+					text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if p.Type == "string" {
+					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
+					text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
+					text += fmt.Sprintf("\t_p%d, _ = %s(%s)\n", n, strconvfunc, p.Name)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
+					n++
+				} else if s := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); s != nil {
+					// Convert slice into pointer, length.
+					// Have to be careful not to take address of &a[0] if len == 0:
+					// pass nil in that case.
+					text += fmt.Sprintf("\tvar _p%d *%s\n", n, s[1])
+					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
+					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
+					n++
+				} else if p.Type == "int64" && endianness != "" {
+					if endianness == "big-endian" {
+						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
+					} else {
+						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
+					}
+				} else if p.Type == "bool" {
+					text += fmt.Sprintf("\tvar _p%d uint32\n", n)
+					text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
+					args = append(args, fmt.Sprintf("uintptr(_p%d)", n))
+					n++
+				} else {
+					args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
+				}
+			}
+			nargs := len(args)
+
+			// Determine which form to use; pad args with zeros.
+			asm := "sysvicall6"
+			if nonblock != nil {
+				asm = "rawSysvicall6"
+			}
+			if len(args) <= 6 {
+				for len(args) < 6 {
+					args = append(args, "0")
+				}
+			} else {
+				fmt.Fprintf(os.Stderr, "%s: too many arguments to system call\n", path)
+				os.Exit(1)
+			}
+
+			// Actual call.
+			arglist := strings.Join(args, ", ")
+			call := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, arglist)
+
+			// Assign return values.
+			body := ""
+			ret := []string{"_", "_", "_"}
+			doErrno := false
+			for i := 0; i < len(out); i++ {
+				p := parseParam(out[i])
+				reg := ""
+				if p.Name == "err" {
+					reg = "e1"
+					ret[2] = reg
+					doErrno = true
+				} else {
+					reg = fmt.Sprintf("r%d", i)
+					ret[i] = reg
+				}
+				if p.Type == "bool" {
+					reg = fmt.Sprintf("%d != 0", reg)
+				}
+				if p.Type == "int64" && endianness != "" {
+					// 64-bit number in r1:r0 or r0:r1.
+					if i+2 > len(out) {
+						fmt.Fprintf(os.Stderr, "%s: not enough registers for int64 return\n", path)
+						os.Exit(1)
+					}
+					if endianness == "big-endian" {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
+					} else {
+						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
+					}
+					ret[i] = fmt.Sprintf("r%d", i)
+					ret[i+1] = fmt.Sprintf("r%d", i+1)
+				}
+				if reg != "e1" {
+					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
+				}
+			}
+			if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
+				text += fmt.Sprintf("\t%s\n", call)
+			} else {
+				text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
+			}
+			text += body
+
+			if doErrno {
+				text += "\tif e1 != 0 {\n"
+				text += "\t\terr = e1\n"
+				text += "\t}\n"
+			}
+			text += "\treturn\n"
+			text += "}\n"
+		}
+		if err := s.Err(); err != nil {
+			fmt.Fprintf(os.Stderr, err.Error())
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	imp := ""
+	if pack != "unix" {
+		imp = "import \"golang.org/x/sys/unix\"\n"
+
+	}
+	vardecls := "\t" + strings.Join(vars, ",\n\t")
+	vardecls += " syscallFunc"
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package %s
+
+import (
+	"syscall"
+	"unsafe"
+)
+%s
+%s
+%s
+var (
+%s	
+)
+
+%s
+`

vendor/golang.org/x/sys/unix/mksysctl_openbsd.go

+// 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.
+
+// +build ignore
+
+// Parse the header files for OpenBSD and generate a Go usable sysctl MIB.
+//
+// Build a MIB with each entry being an array containing the level, type and
+// a hash that will contain additional entries if the current entry is a node.
+// We then walk this MIB and create a flattened sysctl name to OID hash.
+
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+var (
+	goos, goarch string
+)
+
+// cmdLine returns this programs's commandline arguments.
+func cmdLine() string {
+	return "go run mksysctl_openbsd.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags.
+func buildTags() string {
+	return fmt.Sprintf("%s,%s", goarch, goos)
+}
+
+// reMatch performs regular expression match and stores the substring slice to value pointed by m.
+func reMatch(re *regexp.Regexp, str string, m *[]string) bool {
+	*m = re.FindStringSubmatch(str)
+	if *m != nil {
+		return true
+	}
+	return false
+}
+
+type nodeElement struct {
+	n  int
+	t  string
+	pE *map[string]nodeElement
+}
+
+var (
+	debugEnabled bool
+	mib          map[string]nodeElement
+	node         *map[string]nodeElement
+	nodeMap      map[string]string
+	sysCtl       []string
+)
+
+var (
+	ctlNames1RE = regexp.MustCompile(`^#define\s+(CTL_NAMES)\s+{`)
+	ctlNames2RE = regexp.MustCompile(`^#define\s+(CTL_(.*)_NAMES)\s+{`)
+	ctlNames3RE = regexp.MustCompile(`^#define\s+((.*)CTL_NAMES)\s+{`)
+	netInetRE   = regexp.MustCompile(`^netinet/`)
+	netInet6RE  = regexp.MustCompile(`^netinet6/`)
+	netRE       = regexp.MustCompile(`^net/`)
+	bracesRE    = regexp.MustCompile(`{.*}`)
+	ctlTypeRE   = regexp.MustCompile(`{\s+"(\w+)",\s+(CTLTYPE_[A-Z]+)\s+}`)
+	fsNetKernRE = regexp.MustCompile(`^(fs|net|kern)_`)
+)
+
+func debug(s string) {
+	if debugEnabled {
+		fmt.Fprintln(os.Stderr, s)
+	}
+}
+
+// Walk the MIB and build a sysctl name to OID mapping.
+func buildSysctl(pNode *map[string]nodeElement, name string, oid []int) {
+	lNode := pNode // local copy of pointer to node
+	var keys []string
+	for k := range *lNode {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+
+	for _, key := range keys {
+		nodename := name
+		if name != "" {
+			nodename += "."
+		}
+		nodename += key
+
+		nodeoid := append(oid, (*pNode)[key].n)
+
+		if (*pNode)[key].t == `CTLTYPE_NODE` {
+			if _, ok := nodeMap[nodename]; ok {
+				lNode = &mib
+				ctlName := nodeMap[nodename]
+				for _, part := range strings.Split(ctlName, ".") {
+					lNode = ((*lNode)[part]).pE
+				}
+			} else {
+				lNode = (*pNode)[key].pE
+			}
+			buildSysctl(lNode, nodename, nodeoid)
+		} else if (*pNode)[key].t != "" {
+			oidStr := []string{}
+			for j := range nodeoid {
+				oidStr = append(oidStr, fmt.Sprintf("%d", nodeoid[j]))
+			}
+			text := "\t{ \"" + nodename + "\", []_C_int{ " + strings.Join(oidStr, ", ") + " } }, \n"
+			sysCtl = append(sysCtl, text)
+		}
+	}
+}
+
+func main() {
+	// Get the OS (using GOOS_TARGET if it exist)
+	goos = os.Getenv("GOOS_TARGET")
+	if goos == "" {
+		goos = os.Getenv("GOOS")
+	}
+	// Get the architecture (using GOARCH_TARGET if it exists)
+	goarch = os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+	// Check if GOOS and GOARCH environment variables are defined
+	if goarch == "" || goos == "" {
+		fmt.Fprintf(os.Stderr, "GOARCH or GOOS not defined in environment\n")
+		os.Exit(1)
+	}
+
+	mib = make(map[string]nodeElement)
+	headers := [...]string{
+		`sys/sysctl.h`,
+		`sys/socket.h`,
+		`sys/tty.h`,
+		`sys/malloc.h`,
+		`sys/mount.h`,
+		`sys/namei.h`,
+		`sys/sem.h`,
+		`sys/shm.h`,
+		`sys/vmmeter.h`,
+		`uvm/uvmexp.h`,
+		`uvm/uvm_param.h`,
+		`uvm/uvm_swap_encrypt.h`,
+		`ddb/db_var.h`,
+		`net/if.h`,
+		`net/if_pfsync.h`,
+		`net/pipex.h`,
+		`netinet/in.h`,
+		`netinet/icmp_var.h`,
+		`netinet/igmp_var.h`,
+		`netinet/ip_ah.h`,
+		`netinet/ip_carp.h`,
+		`netinet/ip_divert.h`,
+		`netinet/ip_esp.h`,
+		`netinet/ip_ether.h`,
+		`netinet/ip_gre.h`,
+		`netinet/ip_ipcomp.h`,
+		`netinet/ip_ipip.h`,
+		`netinet/pim_var.h`,
+		`netinet/tcp_var.h`,
+		`netinet/udp_var.h`,
+		`netinet6/in6.h`,
+		`netinet6/ip6_divert.h`,
+		`netinet6/pim6_var.h`,
+		`netinet/icmp6.h`,
+		`netmpls/mpls.h`,
+	}
+
+	ctls := [...]string{
+		`kern`,
+		`vm`,
+		`fs`,
+		`net`,
+		//debug			/* Special handling required */
+		`hw`,
+		//machdep		/* Arch specific */
+		`user`,
+		`ddb`,
+		//vfs			/* Special handling required */
+		`fs.posix`,
+		`kern.forkstat`,
+		`kern.intrcnt`,
+		`kern.malloc`,
+		`kern.nchstats`,
+		`kern.seminfo`,
+		`kern.shminfo`,
+		`kern.timecounter`,
+		`kern.tty`,
+		`kern.watchdog`,
+		`net.bpf`,
+		`net.ifq`,
+		`net.inet`,
+		`net.inet.ah`,
+		`net.inet.carp`,
+		`net.inet.divert`,
+		`net.inet.esp`,
+		`net.inet.etherip`,
+		`net.inet.gre`,
+		`net.inet.icmp`,
+		`net.inet.igmp`,
+		`net.inet.ip`,
+		`net.inet.ip.ifq`,
+		`net.inet.ipcomp`,
+		`net.inet.ipip`,
+		`net.inet.mobileip`,
+		`net.inet.pfsync`,
+		`net.inet.pim`,
+		`net.inet.tcp`,
+		`net.inet.udp`,
+		`net.inet6`,
+		`net.inet6.divert`,
+		`net.inet6.ip6`,
+		`net.inet6.icmp6`,
+		`net.inet6.pim6`,
+		`net.inet6.tcp6`,
+		`net.inet6.udp6`,
+		`net.mpls`,
+		`net.mpls.ifq`,
+		`net.key`,
+		`net.pflow`,
+		`net.pfsync`,
+		`net.pipex`,
+		`net.rt`,
+		`vm.swapencrypt`,
+		//vfsgenctl		/* Special handling required */
+	}
+
+	// Node name "fixups"
+	ctlMap := map[string]string{
+		"ipproto":             "net.inet",
+		"net.inet.ipproto":    "net.inet",
+		"net.inet6.ipv6proto": "net.inet6",
+		"net.inet6.ipv6":      "net.inet6.ip6",
+		"net.inet.icmpv6":     "net.inet6.icmp6",
+		"net.inet6.divert6":   "net.inet6.divert",
+		"net.inet6.tcp6":      "net.inet.tcp",
+		"net.inet6.udp6":      "net.inet.udp",
+		"mpls":                "net.mpls",
+		"swpenc":              "vm.swapencrypt",
+	}
+
+	// Node mappings
+	nodeMap = map[string]string{
+		"net.inet.ip.ifq": "net.ifq",
+		"net.inet.pfsync": "net.pfsync",
+		"net.mpls.ifq":    "net.ifq",
+	}
+
+	mCtls := make(map[string]bool)
+	for _, ctl := range ctls {
+		mCtls[ctl] = true
+	}
+
+	for _, header := range headers {
+		debug("Processing " + header)
+		file, err := os.Open(filepath.Join("/usr/include", header))
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%v\n", err)
+			os.Exit(1)
+		}
+		s := bufio.NewScanner(file)
+		for s.Scan() {
+			var sub []string
+			if reMatch(ctlNames1RE, s.Text(), &sub) ||
+				reMatch(ctlNames2RE, s.Text(), &sub) ||
+				reMatch(ctlNames3RE, s.Text(), &sub) {
+				if sub[1] == `CTL_NAMES` {
+					// Top level.
+					node = &mib
+				} else {
+					// Node.
+					nodename := strings.ToLower(sub[2])
+					ctlName := ""
+					if reMatch(netInetRE, header, &sub) {
+						ctlName = "net.inet." + nodename
+					} else if reMatch(netInet6RE, header, &sub) {
+						ctlName = "net.inet6." + nodename
+					} else if reMatch(netRE, header, &sub) {
+						ctlName = "net." + nodename
+					} else {
+						ctlName = nodename
+						ctlName = fsNetKernRE.ReplaceAllString(ctlName, `$1.`)
+					}
+
+					if val, ok := ctlMap[ctlName]; ok {
+						ctlName = val
+					}
+					if _, ok := mCtls[ctlName]; !ok {
+						debug("Ignoring " + ctlName + "...")
+						continue
+					}
+
+					// Walk down from the top of the MIB.
+					node = &mib
+					for _, part := range strings.Split(ctlName, ".") {
+						if _, ok := (*node)[part]; !ok {
+							debug("Missing node " + part)
+							(*node)[part] = nodeElement{n: 0, t: "", pE: &map[string]nodeElement{}}
+						}
+						node = (*node)[part].pE
+					}
+				}
+
+				// Populate current node with entries.
+				i := -1
+				for !strings.HasPrefix(s.Text(), "}") {
+					s.Scan()
+					if reMatch(bracesRE, s.Text(), &sub) {
+						i++
+					}
+					if !reMatch(ctlTypeRE, s.Text(), &sub) {
+						continue
+					}
+					(*node)[sub[1]] = nodeElement{n: i, t: sub[2], pE: &map[string]nodeElement{}}
+				}
+			}
+		}
+		err = s.Err()
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%v\n", err)
+			os.Exit(1)
+		}
+		file.Close()
+	}
+	buildSysctl(&mib, "", []int{})
+
+	sort.Strings(sysCtl)
+	text := strings.Join(sysCtl, "")
+
+	fmt.Printf(srcTemplate, cmdLine(), buildTags(), text)
+}
+
+const srcTemplate = `// %s
+// Code generated by the command above; DO NOT EDIT.
+
+// +build %s
+
+package unix
+
+type mibentry struct {
+	ctlname string
+	ctloid []_C_int
+}
+
+var sysctlMib = []mibentry {
+%s
+}
+`

vendor/golang.org/x/sys/unix/mksysnum.go

+// 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.
+
+// +build ignore
+
+// Generate system call table for DragonFly, NetBSD,
+// FreeBSD, OpenBSD or Darwin from master list
+// (for example, /usr/src/sys/kern/syscalls.master or
+// sys/syscall.h).
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	goos, goarch string
+)
+
+// cmdLine returns this programs's commandline arguments
+func cmdLine() string {
+	return "go run mksysnum.go " + strings.Join(os.Args[1:], " ")
+}
+
+// buildTags returns build tags
+func buildTags() string {
+	return fmt.Sprintf("%s,%s", goarch, goos)
+}
+
+func checkErr(err error) {
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}
+
+// source string and substring slice for regexp
+type re struct {
+	str string   // source string
+	sub []string // matched sub-string
+}
+
+// Match performs regular expression match
+func (r *re) Match(exp string) bool {
+	r.sub = regexp.MustCompile(exp).FindStringSubmatch(r.str)
+	if r.sub != nil {
+		return true
+	}
+	return false
+}
+
+// fetchFile fetches a text file from URL
+func fetchFile(URL string) io.Reader {
+	resp, err := http.Get(URL)
+	checkErr(err)
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	checkErr(err)
+	return strings.NewReader(string(body))
+}
+
+// readFile reads a text file from path
+func readFile(path string) io.Reader {
+	file, err := os.Open(os.Args[1])
+	checkErr(err)
+	return file
+}
+
+func format(name, num, proto string) string {
+	name = strings.ToUpper(name)
+	// There are multiple entries for enosys and nosys, so comment them out.
+	nm := re{str: name}
+	if nm.Match(`^SYS_E?NOSYS$`) {
+		name = fmt.Sprintf("// %s", name)
+	}
+	if name == `SYS_SYS_EXIT` {
+		name = `SYS_EXIT`
+	}
+	return fmt.Sprintf("	%s = %s;  // %s\n", name, num, proto)
+}
+
+func main() {
+	// Get the OS (using GOOS_TARGET if it exist)
+	goos = os.Getenv("GOOS_TARGET")
+	if goos == "" {
+		goos = os.Getenv("GOOS")
+	}
+	// Get the architecture (using GOARCH_TARGET if it exists)
+	goarch = os.Getenv("GOARCH_TARGET")
+	if goarch == "" {
+		goarch = os.Getenv("GOARCH")
+	}
+	// Check if GOOS and GOARCH environment variables are defined
+	if goarch == "" || goos == "" {
+		fmt.Fprintf(os.Stderr, "GOARCH or GOOS not defined in environment\n")
+		os.Exit(1)
+	}
+
+	file := strings.TrimSpace(os.Args[1])
+	var syscalls io.Reader
+	if strings.HasPrefix(file, "https://") || strings.HasPrefix(file, "http://") {
+		// Download syscalls.master file
+		syscalls = fetchFile(file)
+	} else {
+		syscalls = readFile(file)
+	}
+
+	var text, line string
+	s := bufio.NewScanner(syscalls)
+	for s.Scan() {
+		t := re{str: line}
+		if t.Match(`^(.*)\\$`) {
+			// Handle continuation
+			line = t.sub[1]
+			line += strings.TrimLeft(s.Text(), " \t")
+		} else {
+			// New line
+			line = s.Text()
+		}
+		t = re{str: line}
+		if t.Match(`\\$`) {
+			continue
+		}
+		t = re{str: line}
+
+		switch goos {
+		case "dragonfly":
+			if t.Match(`^([0-9]+)\s+STD\s+({ \S+\s+(\w+).*)$`) {
+				num, proto := t.sub[1], t.sub[2]
+				name := fmt.Sprintf("SYS_%s", t.sub[3])
+				text += format(name, num, proto)
+			}
+		case "freebsd":
+			if t.Match(`^([0-9]+)\s+\S+\s+(?:(?:NO)?STD|COMPAT10)\s+({ \S+\s+(\w+).*)$`) {
+				num, proto := t.sub[1], t.sub[2]
+				name := fmt.Sprintf("SYS_%s", t.sub[3])
+				text += format(name, num, proto)
+			}
+		case "openbsd":
+			if t.Match(`^([0-9]+)\s+STD\s+(NOLOCK\s+)?({ \S+\s+\*?(\w+).*)$`) {
+				num, proto, name := t.sub[1], t.sub[3], t.sub[4]
+				text += format(name, num, proto)
+			}
+		case "netbsd":
+			if t.Match(`^([0-9]+)\s+((STD)|(NOERR))\s+(RUMP\s+)?({\s+\S+\s*\*?\s*\|(\S+)\|(\S*)\|(\w+).*\s+})(\s+(\S+))?$`) {
+				num, proto, compat := t.sub[1], t.sub[6], t.sub[8]
+				name := t.sub[7] + "_" + t.sub[9]
+				if t.sub[11] != "" {
+					name = t.sub[7] + "_" + t.sub[11]
+				}
+				name = strings.ToUpper(name)
+				if compat == "" || compat == "13" || compat == "30" || compat == "50" {
+					text += fmt.Sprintf("	%s = %s;  // %s\n", name, num, proto)
+				}
+			}
+		case "darwin":
+			if t.Match(`^#define\s+SYS_(\w+)\s+([0-9]+)`) {
+				name, num := t.sub[1], t.sub[2]
+				name = strings.ToUpper(name)
+				text += fmt.Sprintf("	SYS_%s = %s;\n", name, num)
+			}
+		default:
+			fmt.Fprintf(os.Stderr, "unrecognized GOOS=%s\n", goos)
+			os.Exit(1)
+
+		}
+	}
+	err := s.Err()
+	checkErr(err)
+
+	fmt.Printf(template, cmdLine(), buildTags(), text)
+}
+
+const template = `// %s
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build %s
+
+package unix
+
+const(
+%s)`

vendor/golang.org/x/sys/unix/types_aix.go

+// 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.
+
+// +build ignore
+// +build aix
+
+/*
+Input to cgo -godefs.  See also mkerrors.sh and mkall.sh
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/limits.h>
+#include <sys/un.h>
+#include <utime.h>
+#include <sys/utsname.h>
+#include <sys/poll.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/termio.h>
+#include <sys/ioctl.h>
+
+#include <termios.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+
+
+#include <dirent.h>
+#include <fcntl.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;     // this one gets used for fields
+	struct sockaddr_in s2;  // these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+	PathMax        = C.PATH_MAX
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+type off64 C.off64_t
+type off C.off_t
+type Mode_t C.mode_t
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+type Timeval32 C.struct_timeval32
+
+type Timex C.struct_timex
+
+type Time_t C.time_t
+
+type Tms C.struct_tms
+
+type Utimbuf C.struct_utimbuf
+
+type Timezone C.struct_timezone
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit64
+
+type Pid_t C.pid_t
+
+type _Gid_t C.gid_t
+
+type dev_t C.dev_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type StatxTimestamp C.struct_statx_timestamp
+
+type Statx_t C.struct_statx
+
+type Dirent C.struct_dirent
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Cmsghdr C.struct_cmsghdr
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type Linger C.struct_linger
+
+type Msghdr C.struct_msghdr
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr = C.sizeof_struct_if_msghdr
+)
+
+type IfMsgHdr C.struct_if_msghdr
+
+// Misc
+
+type FdSet C.fd_set
+
+type Utsname C.struct_utsname
+
+type Ustat_t C.struct_ustat
+
+type Sigset_t C.sigset_t
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Termio C.struct_termio
+
+type Winsize C.struct_winsize
+
+//poll
+
+type PollFd struct {
+	Fd      int32
+	Events  uint16
+	Revents uint16
+}
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+//flock_t
+
+type Flock_t C.struct_flock64
+
+// Statfs
+
+type Fsid_t C.struct_fsid_t
+type Fsid64_t C.struct_fsid64_t
+
+type Statfs_t C.struct_statfs
+
+const RNDGETENTCNT = 0x80045200

vendor/golang.org/x/sys/unix/types_darwin.go

+// 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.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define __DARWIN_UNIX03 0
+#define KERNEL
+#define _DARWIN_USE_64_BIT_INODE
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <unistd.h>
+#include <mach/mach.h>
+#include <mach/message.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_var.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+type Timeval32 C.struct_timeval32
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat64
+
+type Statfs_t C.struct_statfs64
+
+type Flock_t C.struct_flock
+
+type Fstore_t C.struct_fstore
+
+type Radvisory_t C.struct_radvisory
+
+type Fbootstraptransfer_t C.struct_fbootstraptransfer
+
+type Log2phys_t C.struct_log2phys
+
+type Fsid C.struct_fsid
+
+type Dirent C.struct_dirent
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet4Pktinfo C.struct_in_pktinfo
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet4Pktinfo     = C.sizeof_struct_in_pktinfo
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr    = C.sizeof_struct_if_msghdr
+	SizeofIfData      = C.sizeof_struct_if_data
+	SizeofIfaMsghdr   = C.sizeof_struct_ifa_msghdr
+	SizeofIfmaMsghdr  = C.sizeof_struct_ifma_msghdr
+	SizeofIfmaMsghdr2 = C.sizeof_struct_ifma_msghdr2
+	SizeofRtMsghdr    = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics   = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfmaMsghdr C.struct_ifma_msghdr
+
+type IfmaMsghdr2 C.struct_ifma_msghdr2
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// uname
+
+type Utsname C.struct_utsname
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo

vendor/golang.org/x/sys/unix/types_dragonfly.go

+// 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.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Statfs_t C.struct_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type Fsid C.struct_fsid
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfmaMsghdr       = C.sizeof_struct_ifma_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfmaMsghdr C.struct_ifma_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// Uname
+
+type Utsname C.struct_utsname

vendor/golang.org/x/sys/unix/types_freebsd.go

+// 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.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define	_WANT_FREEBSD11_STAT	1
+#define	_WANT_FREEBSD11_STATFS	1
+#define	_WANT_FREEBSD11_DIRENT	1
+#define	_WANT_FREEBSD11_KEVENT  1
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/capsicum.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+// This structure is a duplicate of if_data on FreeBSD 8-STABLE.
+// See /usr/include/net/if.h.
+struct if_data8 {
+	u_char  ifi_type;
+	u_char  ifi_physical;
+	u_char  ifi_addrlen;
+	u_char  ifi_hdrlen;
+	u_char  ifi_link_state;
+	u_char  ifi_spare_char1;
+	u_char  ifi_spare_char2;
+	u_char  ifi_datalen;
+	u_long  ifi_mtu;
+	u_long  ifi_metric;
+	u_long  ifi_baudrate;
+	u_long  ifi_ipackets;
+	u_long  ifi_ierrors;
+	u_long  ifi_opackets;
+	u_long  ifi_oerrors;
+	u_long  ifi_collisions;
+	u_long  ifi_ibytes;
+	u_long  ifi_obytes;
+	u_long  ifi_imcasts;
+	u_long  ifi_omcasts;
+	u_long  ifi_iqdrops;
+	u_long  ifi_noproto;
+	u_long  ifi_hwassist;
+// FIXME: these are now unions, so maybe need to change definitions?
+#undef ifi_epoch
+	time_t  ifi_epoch;
+#undef ifi_lastchange
+	struct  timeval ifi_lastchange;
+};
+
+// This structure is a duplicate of if_msghdr on FreeBSD 8-STABLE.
+// See /usr/include/net/if.h.
+struct if_msghdr8 {
+	u_short ifm_msglen;
+	u_char  ifm_version;
+	u_char  ifm_type;
+	int     ifm_addrs;
+	int     ifm_flags;
+	u_short ifm_index;
+	struct  if_data8 ifm_data;
+};
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+const (
+	_statfsVersion = C.STATFS_VERSION
+	_dirblksiz     = C.DIRBLKSIZ
+)
+
+type Stat_t C.struct_stat
+
+type stat_freebsd11_t C.struct_freebsd11_stat
+
+type Statfs_t C.struct_statfs
+
+type statfs_freebsd11_t C.struct_freebsd11_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type dirent_freebsd11 C.struct_freebsd11_dirent
+
+type Fsid C.struct_fsid
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Advice to Fadvise
+
+const (
+	FADV_NORMAL     = C.POSIX_FADV_NORMAL
+	FADV_RANDOM     = C.POSIX_FADV_RANDOM
+	FADV_SEQUENTIAL = C.POSIX_FADV_SEQUENTIAL
+	FADV_WILLNEED   = C.POSIX_FADV_WILLNEED
+	FADV_DONTNEED   = C.POSIX_FADV_DONTNEED
+	FADV_NOREUSE    = C.POSIX_FADV_NOREUSE
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPMreqn C.struct_ip_mreqn
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPMreqn          = C.sizeof_struct_ip_mreqn
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_ATTACH     = C.PT_ATTACH
+	PTRACE_CONT       = C.PT_CONTINUE
+	PTRACE_DETACH     = C.PT_DETACH
+	PTRACE_GETFPREGS  = C.PT_GETFPREGS
+	PTRACE_GETFSBASE  = C.PT_GETFSBASE
+	PTRACE_GETLWPLIST = C.PT_GETLWPLIST
+	PTRACE_GETNUMLWPS = C.PT_GETNUMLWPS
+	PTRACE_GETREGS    = C.PT_GETREGS
+	PTRACE_GETXSTATE  = C.PT_GETXSTATE
+	PTRACE_IO         = C.PT_IO
+	PTRACE_KILL       = C.PT_KILL
+	PTRACE_LWPEVENTS  = C.PT_LWP_EVENTS
+	PTRACE_LWPINFO    = C.PT_LWPINFO
+	PTRACE_SETFPREGS  = C.PT_SETFPREGS
+	PTRACE_SETREGS    = C.PT_SETREGS
+	PTRACE_SINGLESTEP = C.PT_STEP
+	PTRACE_TRACEME    = C.PT_TRACE_ME
+)
+
+const (
+	PIOD_READ_D  = C.PIOD_READ_D
+	PIOD_WRITE_D = C.PIOD_WRITE_D
+	PIOD_READ_I  = C.PIOD_READ_I
+	PIOD_WRITE_I = C.PIOD_WRITE_I
+)
+
+const (
+	PL_FLAG_BORN   = C.PL_FLAG_BORN
+	PL_FLAG_EXITED = C.PL_FLAG_EXITED
+	PL_FLAG_SI     = C.PL_FLAG_SI
+)
+
+const (
+	TRAP_BRKPT = C.TRAP_BRKPT
+	TRAP_TRACE = C.TRAP_TRACE
+)
+
+type PtraceLwpInfoStruct C.struct_ptrace_lwpinfo
+
+type __Siginfo C.struct___siginfo
+
+type Sigset_t C.sigset_t
+
+type Reg C.struct_reg
+
+type FpReg C.struct_fpreg
+
+type PtraceIoDesc C.struct_ptrace_io_desc
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent_freebsd11
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	sizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr8
+	sizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfData           = C.sizeof_struct_if_data8
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfmaMsghdr       = C.sizeof_struct_ifma_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type ifMsghdr C.struct_if_msghdr
+
+type IfMsghdr C.struct_if_msghdr8
+
+type ifData C.struct_if_data
+
+type IfData C.struct_if_data8
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfmaMsghdr C.struct_ifma_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion    = C.sizeof_struct_bpf_version
+	SizeofBpfStat       = C.sizeof_struct_bpf_stat
+	SizeofBpfZbuf       = C.sizeof_struct_bpf_zbuf
+	SizeofBpfProgram    = C.sizeof_struct_bpf_program
+	SizeofBpfInsn       = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr        = C.sizeof_struct_bpf_hdr
+	SizeofBpfZbufHeader = C.sizeof_struct_bpf_zbuf_header
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfZbuf C.struct_bpf_zbuf
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+type BpfZbufHeader C.struct_bpf_zbuf_header
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR      = C.POLLERR
+	POLLHUP      = C.POLLHUP
+	POLLIN       = C.POLLIN
+	POLLINIGNEOF = C.POLLINIGNEOF
+	POLLNVAL     = C.POLLNVAL
+	POLLOUT      = C.POLLOUT
+	POLLPRI      = C.POLLPRI
+	POLLRDBAND   = C.POLLRDBAND
+	POLLRDNORM   = C.POLLRDNORM
+	POLLWRBAND   = C.POLLWRBAND
+	POLLWRNORM   = C.POLLWRNORM
+)
+
+// Capabilities
+
+type CapRights C.struct_cap_rights
+
+// Uname
+
+type Utsname C.struct_utsname

vendor/golang.org/x/sys/unix/types_netbsd.go

+// 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.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Statfs_t C.struct_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type Fsid C.fsid_t
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Advice to Fadvise
+
+const (
+	FADV_NORMAL     = C.POSIX_FADV_NORMAL
+	FADV_RANDOM     = C.POSIX_FADV_RANDOM
+	FADV_SEQUENTIAL = C.POSIX_FADV_SEQUENTIAL
+	FADV_WILLNEED   = C.POSIX_FADV_WILLNEED
+	FADV_DONTNEED   = C.POSIX_FADV_DONTNEED
+	FADV_NOREUSE    = C.POSIX_FADV_NOREUSE
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+type Mclpool C.struct_mclpool
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+type BpfTimeval C.struct_bpf_timeval
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+type Ptmget C.struct_ptmget
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// Sysctl
+
+type Sysctlnode C.struct_sysctlnode
+
+// Uname
+
+type Utsname C.struct_utsname
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo

vendor/golang.org/x/sys/unix/types_openbsd.go

+// 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.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+#include <dirent.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <uvm/uvmexp.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Statfs_t C.struct_statfs
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+type Fsid C.fsid_t
+
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Ptrace requests
+
+const (
+	PTRACE_TRACEME = C.PT_TRACE_ME
+	PTRACE_CONT    = C.PT_CONTINUE
+	PTRACE_KILL    = C.PT_KILL
+)
+
+// Events (kqueue, kevent)
+
+type Kevent_t C.struct_kevent
+
+// Select
+
+type FdSet C.fd_set
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+type Mclpool C.struct_mclpool
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfHdr C.struct_bpf_hdr
+
+type BpfTimeval C.struct_bpf_timeval
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Winsize C.struct_winsize
+
+// fchmodat-like syscalls.
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+)
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)
+
+// Signal Sets
+
+type Sigset_t C.sigset_t
+
+// Uname
+
+type Utsname C.struct_utsname
+
+// Uvmexp
+
+const SizeofUvmexp = C.sizeof_struct_uvmexp
+
+type Uvmexp C.struct_uvmexp
+
+// Clockinfo
+
+const SizeofClockinfo = C.sizeof_struct_clockinfo
+
+type Clockinfo C.struct_clockinfo

vendor/golang.org/x/sys/unix/types_solaris.go

+// 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.
+
+// +build ignore
+
+/*
+Input to cgo -godefs.  See README.md
+*/
+
+// +godefs map struct_in_addr [4]byte /* in_addr */
+// +godefs map struct_in6_addr [16]byte /* in6_addr */
+
+package unix
+
+/*
+#define KERNEL
+// These defines ensure that builds done on newer versions of Solaris are
+// backwards-compatible with older versions of Solaris and
+// OpenSolaris-based derivatives.
+#define __USE_SUNOS_SOCKETS__          // msghdr
+#define __USE_LEGACY_PROTOTYPES__      // iovec
+#include <dirent.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <limits.h>
+#include <poll.h>
+#include <signal.h>
+#include <termios.h>
+#include <termio.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/icmp6.h>
+#include <netinet/tcp.h>
+#include <ustat.h>
+#include <utime.h>
+
+enum {
+	sizeofPtr = sizeof(void*),
+};
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+	struct sockaddr_dl s5;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+*/
+import "C"
+
+// Machine characteristics
+
+const (
+	SizeofPtr      = C.sizeofPtr
+	SizeofShort    = C.sizeof_short
+	SizeofInt      = C.sizeof_int
+	SizeofLong     = C.sizeof_long
+	SizeofLongLong = C.sizeof_longlong
+	PathMax        = C.PATH_MAX
+	MaxHostNameLen = C.MAXHOSTNAMELEN
+)
+
+// Basic types
+
+type (
+	_C_short     C.short
+	_C_int       C.int
+	_C_long      C.long
+	_C_long_long C.longlong
+)
+
+// Time
+
+type Timespec C.struct_timespec
+
+type Timeval C.struct_timeval
+
+type Timeval32 C.struct_timeval32
+
+type Tms C.struct_tms
+
+type Utimbuf C.struct_utimbuf
+
+// Processes
+
+type Rusage C.struct_rusage
+
+type Rlimit C.struct_rlimit
+
+type _Gid_t C.gid_t
+
+// Files
+
+type Stat_t C.struct_stat
+
+type Flock_t C.struct_flock
+
+type Dirent C.struct_dirent
+
+// Filesystems
+
+type _Fsblkcnt_t C.fsblkcnt_t
+
+type Statvfs_t C.struct_statvfs
+
+// Sockets
+
+type RawSockaddrInet4 C.struct_sockaddr_in
+
+type RawSockaddrInet6 C.struct_sockaddr_in6
+
+type RawSockaddrUnix C.struct_sockaddr_un
+
+type RawSockaddrDatalink C.struct_sockaddr_dl
+
+type RawSockaddr C.struct_sockaddr
+
+type RawSockaddrAny C.struct_sockaddr_any
+
+type _Socklen C.socklen_t
+
+type Linger C.struct_linger
+
+type Iovec C.struct_iovec
+
+type IPMreq C.struct_ip_mreq
+
+type IPv6Mreq C.struct_ipv6_mreq
+
+type Msghdr C.struct_msghdr
+
+type Cmsghdr C.struct_cmsghdr
+
+type Inet6Pktinfo C.struct_in6_pktinfo
+
+type IPv6MTUInfo C.struct_ip6_mtuinfo
+
+type ICMPv6Filter C.struct_icmp6_filter
+
+const (
+	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
+	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
+	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
+	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
+	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
+	SizeofLinger           = C.sizeof_struct_linger
+	SizeofIPMreq           = C.sizeof_struct_ip_mreq
+	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
+	SizeofMsghdr           = C.sizeof_struct_msghdr
+	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
+	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
+	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
+	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
+)
+
+// Select
+
+type FdSet C.fd_set
+
+// Misc
+
+type Utsname C.struct_utsname
+
+type Ustat_t C.struct_ustat
+
+const (
+	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
+	AT_REMOVEDIR        = C.AT_REMOVEDIR
+	AT_EACCESS          = C.AT_EACCESS
+)
+
+// Routing and interface messages
+
+const (
+	SizeofIfMsghdr  = C.sizeof_struct_if_msghdr
+	SizeofIfData    = C.sizeof_struct_if_data
+	SizeofIfaMsghdr = C.sizeof_struct_ifa_msghdr
+	SizeofRtMsghdr  = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics = C.sizeof_struct_rt_metrics
+)
+
+type IfMsghdr C.struct_if_msghdr
+
+type IfData C.struct_if_data
+
+type IfaMsghdr C.struct_ifa_msghdr
+
+type RtMsghdr C.struct_rt_msghdr
+
+type RtMetrics C.struct_rt_metrics
+
+// Berkeley packet filter
+
+const (
+	SizeofBpfVersion = C.sizeof_struct_bpf_version
+	SizeofBpfStat    = C.sizeof_struct_bpf_stat
+	SizeofBpfProgram = C.sizeof_struct_bpf_program
+	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
+	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
+)
+
+type BpfVersion C.struct_bpf_version
+
+type BpfStat C.struct_bpf_stat
+
+type BpfProgram C.struct_bpf_program
+
+type BpfInsn C.struct_bpf_insn
+
+type BpfTimeval C.struct_bpf_timeval
+
+type BpfHdr C.struct_bpf_hdr
+
+// Terminal handling
+
+type Termios C.struct_termios
+
+type Termio C.struct_termio
+
+type Winsize C.struct_winsize
+
+// poll
+
+type PollFd C.struct_pollfd
+
+const (
+	POLLERR    = C.POLLERR
+	POLLHUP    = C.POLLHUP
+	POLLIN     = C.POLLIN
+	POLLNVAL   = C.POLLNVAL
+	POLLOUT    = C.POLLOUT
+	POLLPRI    = C.POLLPRI
+	POLLRDBAND = C.POLLRDBAND
+	POLLRDNORM = C.POLLRDNORM
+	POLLWRBAND = C.POLLWRBAND
+	POLLWRNORM = C.POLLWRNORM
+)

vendor/golang.org/x/text/encoding/internal/identifier/gen.go

+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+import (
+	"bytes"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"log"
+	"strings"
+
+	"golang.org/x/text/internal/gen"
+)
+
+type registry struct {
+	XMLName  xml.Name `xml:"registry"`
+	Updated  string   `xml:"updated"`
+	Registry []struct {
+		ID     string `xml:"id,attr"`
+		Record []struct {
+			Name string `xml:"name"`
+			Xref []struct {
+				Type string `xml:"type,attr"`
+				Data string `xml:"data,attr"`
+			} `xml:"xref"`
+			Desc struct {
+				Data string `xml:",innerxml"`
+				// Any []struct {
+				// 	Data string `xml:",chardata"`
+				// } `xml:",any"`
+				// Data string `xml:",chardata"`
+			} `xml:"description,"`
+			MIB   string   `xml:"value"`
+			Alias []string `xml:"alias"`
+			MIME  string   `xml:"preferred_alias"`
+		} `xml:"record"`
+	} `xml:"registry"`
+}
+
+func main() {
+	r := gen.OpenIANAFile("assignments/character-sets/character-sets.xml")
+	reg := &registry{}
+	if err := xml.NewDecoder(r).Decode(&reg); err != nil && err != io.EOF {
+		log.Fatalf("Error decoding charset registry: %v", err)
+	}
+	if len(reg.Registry) == 0 || reg.Registry[0].ID != "character-sets-1" {
+		log.Fatalf("Unexpected ID %s", reg.Registry[0].ID)
+	}
+
+	w := &bytes.Buffer{}
+	fmt.Fprintf(w, "const (\n")
+	for _, rec := range reg.Registry[0].Record {
+		constName := ""
+		for _, a := range rec.Alias {
+			if strings.HasPrefix(a, "cs") && strings.IndexByte(a, '-') == -1 {
+				// Some of the constant definitions have comments in them. Strip those.
+				constName = strings.Title(strings.SplitN(a[2:], "\n", 2)[0])
+			}
+		}
+		if constName == "" {
+			switch rec.MIB {
+			case "2085":
+				constName = "HZGB2312" // Not listed as alias for some reason.
+			default:
+				log.Fatalf("No cs alias defined for %s.", rec.MIB)
+			}
+		}
+		if rec.MIME != "" {
+			rec.MIME = fmt.Sprintf(" (MIME: %s)", rec.MIME)
+		}
+		fmt.Fprintf(w, "// %s is the MIB identifier with IANA name %s%s.\n//\n", constName, rec.Name, rec.MIME)
+		if len(rec.Desc.Data) > 0 {
+			fmt.Fprint(w, "// ")
+			d := xml.NewDecoder(strings.NewReader(rec.Desc.Data))
+			inElem := true
+			attr := ""
+			for {
+				t, err := d.Token()
+				if err != nil {
+					if err != io.EOF {
+						log.Fatal(err)
+					}
+					break
+				}
+				switch x := t.(type) {
+				case xml.CharData:
+					attr = "" // Don't need attribute info.
+					a := bytes.Split([]byte(x), []byte("\n"))
+					for i, b := range a {
+						if b = bytes.TrimSpace(b); len(b) != 0 {
+							if !inElem && i > 0 {
+								fmt.Fprint(w, "\n// ")
+							}
+							inElem = false
+							fmt.Fprintf(w, "%s ", string(b))
+						}
+					}
+				case xml.StartElement:
+					if x.Name.Local == "xref" {
+						inElem = true
+						use := false
+						for _, a := range x.Attr {
+							if a.Name.Local == "type" {
+								use = use || a.Value != "person"
+							}
+							if a.Name.Local == "data" && use {
+								// Patch up URLs to use https. From some links, the
+								// https version is different from the http one.
+								s := a.Value
+								s = strings.Replace(s, "http://", "https://", -1)
+								s = strings.Replace(s, "/unicode/", "/", -1)
+								attr = s + " "
+							}
+						}
+					}
+				case xml.EndElement:
+					inElem = false
+					fmt.Fprint(w, attr)
+				}
+			}
+			fmt.Fprint(w, "\n")
+		}
+		for _, x := range rec.Xref {
+			switch x.Type {
+			case "rfc":
+				fmt.Fprintf(w, "// Reference: %s\n", strings.ToUpper(x.Data))
+			case "uri":
+				fmt.Fprintf(w, "// Reference: %s\n", x.Data)
+			}
+		}
+		fmt.Fprintf(w, "%s MIB = %s\n", constName, rec.MIB)
+		fmt.Fprintln(w)
+	}
+	fmt.Fprintln(w, ")")
+
+	gen.WriteGoFile("mib.go", "identifier", w.Bytes())
+}

vendor/golang.org/x/text/unicode/bidi/gen.go

+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+import (
+	"flag"
+	"log"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/triegen"
+	"golang.org/x/text/internal/ucd"
+)
+
+var outputFile = flag.String("out", "tables.go", "output file")
+
+func main() {
+	gen.Init()
+	gen.Repackage("gen_trieval.go", "trieval.go", "bidi")
+	gen.Repackage("gen_ranges.go", "ranges_test.go", "bidi")
+
+	genTables()
+}
+
+// bidiClass names and codes taken from class "bc" in
+// https://www.unicode.org/Public/8.0.0/ucd/PropertyValueAliases.txt
+var bidiClass = map[string]Class{
+	"AL":  AL,  // ArabicLetter
+	"AN":  AN,  // ArabicNumber
+	"B":   B,   // ParagraphSeparator
+	"BN":  BN,  // BoundaryNeutral
+	"CS":  CS,  // CommonSeparator
+	"EN":  EN,  // EuropeanNumber
+	"ES":  ES,  // EuropeanSeparator
+	"ET":  ET,  // EuropeanTerminator
+	"L":   L,   // LeftToRight
+	"NSM": NSM, // NonspacingMark
+	"ON":  ON,  // OtherNeutral
+	"R":   R,   // RightToLeft
+	"S":   S,   // SegmentSeparator
+	"WS":  WS,  // WhiteSpace
+
+	"FSI": Control,
+	"PDF": Control,
+	"PDI": Control,
+	"LRE": Control,
+	"LRI": Control,
+	"LRO": Control,
+	"RLE": Control,
+	"RLI": Control,
+	"RLO": Control,
+}
+
+func genTables() {
+	if numClass > 0x0F {
+		log.Fatalf("Too many Class constants (%#x > 0x0F).", numClass)
+	}
+	w := gen.NewCodeWriter()
+	defer w.WriteVersionedGoFile(*outputFile, "bidi")
+
+	gen.WriteUnicodeVersion(w)
+
+	t := triegen.NewTrie("bidi")
+
+	// Build data about bracket mapping. These bits need to be or-ed with
+	// any other bits.
+	orMask := map[rune]uint64{}
+
+	xorMap := map[rune]int{}
+	xorMasks := []rune{0} // First value is no-op.
+
+	ucd.Parse(gen.OpenUCDFile("BidiBrackets.txt"), func(p *ucd.Parser) {
+		r1 := p.Rune(0)
+		r2 := p.Rune(1)
+		xor := r1 ^ r2
+		if _, ok := xorMap[xor]; !ok {
+			xorMap[xor] = len(xorMasks)
+			xorMasks = append(xorMasks, xor)
+		}
+		entry := uint64(xorMap[xor]) << xorMaskShift
+		switch p.String(2) {
+		case "o":
+			entry |= openMask
+		case "c", "n":
+		default:
+			log.Fatalf("Unknown bracket class %q.", p.String(2))
+		}
+		orMask[r1] = entry
+	})
+
+	w.WriteComment(`
+	xorMasks contains masks to be xor-ed with brackets to get the reverse
+	version.`)
+	w.WriteVar("xorMasks", xorMasks)
+
+	done := map[rune]bool{}
+
+	insert := func(r rune, c Class) {
+		if !done[r] {
+			t.Insert(r, orMask[r]|uint64(c))
+			done[r] = true
+		}
+	}
+
+	// Insert the derived BiDi properties.
+	ucd.Parse(gen.OpenUCDFile("extracted/DerivedBidiClass.txt"), func(p *ucd.Parser) {
+		r := p.Rune(0)
+		class, ok := bidiClass[p.String(1)]
+		if !ok {
+			log.Fatalf("%U: Unknown BiDi class %q", r, p.String(1))
+		}
+		insert(r, class)
+	})
+	visitDefaults(insert)
+
+	// TODO: use sparse blocks. This would reduce table size considerably
+	// from the looks of it.
+
+	sz, err := t.Gen(w)
+	if err != nil {
+		log.Fatal(err)
+	}
+	w.Size += sz
+}
+
+// dummy values to make methods in gen_common compile. The real versions
+// will be generated by this file to tables.go.
+var (
+	xorMasks []rune
+)

vendor/golang.org/x/text/unicode/bidi/gen_ranges.go

+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+import (
+	"unicode"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/ucd"
+	"golang.org/x/text/unicode/rangetable"
+)
+
+// These tables are hand-extracted from:
+// https://www.unicode.org/Public/8.0.0/ucd/extracted/DerivedBidiClass.txt
+func visitDefaults(fn func(r rune, c Class)) {
+	// first write default values for ranges listed above.
+	visitRunes(fn, AL, []rune{
+		0x0600, 0x07BF, // Arabic
+		0x08A0, 0x08FF, // Arabic Extended-A
+		0xFB50, 0xFDCF, // Arabic Presentation Forms
+		0xFDF0, 0xFDFF,
+		0xFE70, 0xFEFF,
+		0x0001EE00, 0x0001EEFF, // Arabic Mathematical Alpha Symbols
+	})
+	visitRunes(fn, R, []rune{
+		0x0590, 0x05FF, // Hebrew
+		0x07C0, 0x089F, // Nko et al.
+		0xFB1D, 0xFB4F,
+		0x00010800, 0x00010FFF, // Cypriot Syllabary et. al.
+		0x0001E800, 0x0001EDFF,
+		0x0001EF00, 0x0001EFFF,
+	})
+	visitRunes(fn, ET, []rune{ // European Terminator
+		0x20A0, 0x20Cf, // Currency symbols
+	})
+	rangetable.Visit(unicode.Noncharacter_Code_Point, func(r rune) {
+		fn(r, BN) // Boundary Neutral
+	})
+	ucd.Parse(gen.OpenUCDFile("DerivedCoreProperties.txt"), func(p *ucd.Parser) {
+		if p.String(1) == "Default_Ignorable_Code_Point" {
+			fn(p.Rune(0), BN) // Boundary Neutral
+		}
+	})
+}
+
+func visitRunes(fn func(r rune, c Class), c Class, runes []rune) {
+	for i := 0; i < len(runes); i += 2 {
+		lo, hi := runes[i], runes[i+1]
+		for j := lo; j <= hi; j++ {
+			fn(j, c)
+		}
+	}
+}

vendor/golang.org/x/text/unicode/bidi/gen_trieval.go

+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+// Class is the Unicode BiDi class. Each rune has a single class.
+type Class uint
+
+const (
+	L       Class = iota // LeftToRight
+	R                    // RightToLeft
+	EN                   // EuropeanNumber
+	ES                   // EuropeanSeparator
+	ET                   // EuropeanTerminator
+	AN                   // ArabicNumber
+	CS                   // CommonSeparator
+	B                    // ParagraphSeparator
+	S                    // SegmentSeparator
+	WS                   // WhiteSpace
+	ON                   // OtherNeutral
+	BN                   // BoundaryNeutral
+	NSM                  // NonspacingMark
+	AL                   // ArabicLetter
+	Control              // Control LRO - PDI
+
+	numClass
+
+	LRO // LeftToRightOverride
+	RLO // RightToLeftOverride
+	LRE // LeftToRightEmbedding
+	RLE // RightToLeftEmbedding
+	PDF // PopDirectionalFormat
+	LRI // LeftToRightIsolate
+	RLI // RightToLeftIsolate
+	FSI // FirstStrongIsolate
+	PDI // PopDirectionalIsolate
+
+	unknownClass = ^Class(0)
+)
+
+var controlToClass = map[rune]Class{
+	0x202D: LRO, // LeftToRightOverride,
+	0x202E: RLO, // RightToLeftOverride,
+	0x202A: LRE, // LeftToRightEmbedding,
+	0x202B: RLE, // RightToLeftEmbedding,
+	0x202C: PDF, // PopDirectionalFormat,
+	0x2066: LRI, // LeftToRightIsolate,
+	0x2067: RLI, // RightToLeftIsolate,
+	0x2068: FSI, // FirstStrongIsolate,
+	0x2069: PDI, // PopDirectionalIsolate,
+}
+
+// A trie entry has the following bits:
+// 7..5  XOR mask for brackets
+// 4     1: Bracket open, 0: Bracket close
+// 3..0  Class type
+
+const (
+	openMask     = 0x10
+	xorMaskShift = 5
+)

vendor/golang.org/x/text/unicode/norm/maketables.go

+// 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.
+
+// +build ignore
+
+// Normalization table generator.
+// Data read from the web.
+// See forminfo.go for a description of the trie values associated with each rune.
+
+package main
+
+import (
+	"bytes"
+	"encoding/binary"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"sort"
+	"strconv"
+	"strings"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/triegen"
+	"golang.org/x/text/internal/ucd"
+)
+
+func main() {
+	gen.Init()
+	loadUnicodeData()
+	compactCCC()
+	loadCompositionExclusions()
+	completeCharFields(FCanonical)
+	completeCharFields(FCompatibility)
+	computeNonStarterCounts()
+	verifyComputed()
+	printChars()
+	testDerived()
+	printTestdata()
+	makeTables()
+}
+
+var (
+	tablelist = flag.String("tables",
+		"all",
+		"comma-separated list of which tables to generate; "+
+			"can be 'decomp', 'recomp', 'info' and 'all'")
+	test = flag.Bool("test",
+		false,
+		"test existing tables against DerivedNormalizationProps and generate test data for regression testing")
+	verbose = flag.Bool("verbose",
+		false,
+		"write data to stdout as it is parsed")
+)
+
+const MaxChar = 0x10FFFF // anything above this shouldn't exist
+
+// Quick Check properties of runes allow us to quickly
+// determine whether a rune may occur in a normal form.
+// For a given normal form, a rune may be guaranteed to occur
+// verbatim (QC=Yes), may or may not combine with another
+// rune (QC=Maybe), or may not occur (QC=No).
+type QCResult int
+
+const (
+	QCUnknown QCResult = iota
+	QCYes
+	QCNo
+	QCMaybe
+)
+
+func (r QCResult) String() string {
+	switch r {
+	case QCYes:
+		return "Yes"
+	case QCNo:
+		return "No"
+	case QCMaybe:
+		return "Maybe"
+	}
+	return "***UNKNOWN***"
+}
+
+const (
+	FCanonical     = iota // NFC or NFD
+	FCompatibility        // NFKC or NFKD
+	FNumberOfFormTypes
+)
+
+const (
+	MComposed   = iota // NFC or NFKC
+	MDecomposed        // NFD or NFKD
+	MNumberOfModes
+)
+
+// This contains only the properties we're interested in.
+type Char struct {
+	name          string
+	codePoint     rune  // if zero, this index is not a valid code point.
+	ccc           uint8 // canonical combining class
+	origCCC       uint8
+	excludeInComp bool // from CompositionExclusions.txt
+	compatDecomp  bool // it has a compatibility expansion
+
+	nTrailingNonStarters uint8
+	nLeadingNonStarters  uint8 // must be equal to trailing if non-zero
+
+	forms [FNumberOfFormTypes]FormInfo // For FCanonical and FCompatibility
+
+	state State
+}
+
+var chars = make([]Char, MaxChar+1)
+var cccMap = make(map[uint8]uint8)
+
+func (c Char) String() string {
+	buf := new(bytes.Buffer)
+
+	fmt.Fprintf(buf, "%U [%s]:\n", c.codePoint, c.name)
+	fmt.Fprintf(buf, "  ccc: %v\n", c.ccc)
+	fmt.Fprintf(buf, "  excludeInComp: %v\n", c.excludeInComp)
+	fmt.Fprintf(buf, "  compatDecomp: %v\n", c.compatDecomp)
+	fmt.Fprintf(buf, "  state: %v\n", c.state)
+	fmt.Fprintf(buf, "  NFC:\n")
+	fmt.Fprint(buf, c.forms[FCanonical])
+	fmt.Fprintf(buf, "  NFKC:\n")
+	fmt.Fprint(buf, c.forms[FCompatibility])
+
+	return buf.String()
+}
+
+// In UnicodeData.txt, some ranges are marked like this:
+//	3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
+//	4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
+// parseCharacter keeps a state variable indicating the weirdness.
+type State int
+
+const (
+	SNormal State = iota // known to be zero for the type
+	SFirst
+	SLast
+	SMissing
+)
+
+var lastChar = rune('\u0000')
+
+func (c Char) isValid() bool {
+	return c.codePoint != 0 && c.state != SMissing
+}
+
+type FormInfo struct {
+	quickCheck [MNumberOfModes]QCResult // index: MComposed or MDecomposed
+	verified   [MNumberOfModes]bool     // index: MComposed or MDecomposed
+
+	combinesForward  bool // May combine with rune on the right
+	combinesBackward bool // May combine with rune on the left
+	isOneWay         bool // Never appears in result
+	inDecomp         bool // Some decompositions result in this char.
+	decomp           Decomposition
+	expandedDecomp   Decomposition
+}
+
+func (f FormInfo) String() string {
+	buf := bytes.NewBuffer(make([]byte, 0))
+
+	fmt.Fprintf(buf, "    quickCheck[C]: %v\n", f.quickCheck[MComposed])
+	fmt.Fprintf(buf, "    quickCheck[D]: %v\n", f.quickCheck[MDecomposed])
+	fmt.Fprintf(buf, "    cmbForward: %v\n", f.combinesForward)
+	fmt.Fprintf(buf, "    cmbBackward: %v\n", f.combinesBackward)
+	fmt.Fprintf(buf, "    isOneWay: %v\n", f.isOneWay)
+	fmt.Fprintf(buf, "    inDecomp: %v\n", f.inDecomp)
+	fmt.Fprintf(buf, "    decomposition: %X\n", f.decomp)
+	fmt.Fprintf(buf, "    expandedDecomp: %X\n", f.expandedDecomp)
+
+	return buf.String()
+}
+
+type Decomposition []rune
+
+func parseDecomposition(s string, skipfirst bool) (a []rune, err error) {
+	decomp := strings.Split(s, " ")
+	if len(decomp) > 0 && skipfirst {
+		decomp = decomp[1:]
+	}
+	for _, d := range decomp {
+		point, err := strconv.ParseUint(d, 16, 64)
+		if err != nil {
+			return a, err
+		}
+		a = append(a, rune(point))
+	}
+	return a, nil
+}
+
+func loadUnicodeData() {
+	f := gen.OpenUCDFile("UnicodeData.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		r := p.Rune(ucd.CodePoint)
+		char := &chars[r]
+
+		char.ccc = uint8(p.Uint(ucd.CanonicalCombiningClass))
+		decmap := p.String(ucd.DecompMapping)
+
+		exp, err := parseDecomposition(decmap, false)
+		isCompat := false
+		if err != nil {
+			if len(decmap) > 0 {
+				exp, err = parseDecomposition(decmap, true)
+				if err != nil {
+					log.Fatalf(`%U: bad decomp |%v|: "%s"`, r, decmap, err)
+				}
+				isCompat = true
+			}
+		}
+
+		char.name = p.String(ucd.Name)
+		char.codePoint = r
+		char.forms[FCompatibility].decomp = exp
+		if !isCompat {
+			char.forms[FCanonical].decomp = exp
+		} else {
+			char.compatDecomp = true
+		}
+		if len(decmap) > 0 {
+			char.forms[FCompatibility].decomp = exp
+		}
+	}
+	if err := p.Err(); err != nil {
+		log.Fatal(err)
+	}
+}
+
+// compactCCC converts the sparse set of CCC values to a continguous one,
+// reducing the number of bits needed from 8 to 6.
+func compactCCC() {
+	m := make(map[uint8]uint8)
+	for i := range chars {
+		c := &chars[i]
+		m[c.ccc] = 0
+	}
+	cccs := []int{}
+	for v, _ := range m {
+		cccs = append(cccs, int(v))
+	}
+	sort.Ints(cccs)
+	for i, c := range cccs {
+		cccMap[uint8(i)] = uint8(c)
+		m[uint8(c)] = uint8(i)
+	}
+	for i := range chars {
+		c := &chars[i]
+		c.origCCC = c.ccc
+		c.ccc = m[c.ccc]
+	}
+	if len(m) >= 1<<6 {
+		log.Fatalf("too many difference CCC values: %d >= 64", len(m))
+	}
+}
+
+// CompositionExclusions.txt has form:
+// 0958    # ...
+// See https://unicode.org/reports/tr44/ for full explanation
+func loadCompositionExclusions() {
+	f := gen.OpenUCDFile("CompositionExclusions.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		c := &chars[p.Rune(0)]
+		if c.excludeInComp {
+			log.Fatalf("%U: Duplicate entry in exclusions.", c.codePoint)
+		}
+		c.excludeInComp = true
+	}
+	if e := p.Err(); e != nil {
+		log.Fatal(e)
+	}
+}
+
+// hasCompatDecomp returns true if any of the recursive
+// decompositions contains a compatibility expansion.
+// In this case, the character may not occur in NFK*.
+func hasCompatDecomp(r rune) bool {
+	c := &chars[r]
+	if c.compatDecomp {
+		return true
+	}
+	for _, d := range c.forms[FCompatibility].decomp {
+		if hasCompatDecomp(d) {
+			return true
+		}
+	}
+	return false
+}
+
+// Hangul related constants.
+const (
+	HangulBase = 0xAC00
+	HangulEnd  = 0xD7A4 // hangulBase + Jamo combinations (19 * 21 * 28)
+
+	JamoLBase = 0x1100
+	JamoLEnd  = 0x1113
+	JamoVBase = 0x1161
+	JamoVEnd  = 0x1176
+	JamoTBase = 0x11A8
+	JamoTEnd  = 0x11C3
+
+	JamoLVTCount = 19 * 21 * 28
+	JamoTCount   = 28
+)
+
+func isHangul(r rune) bool {
+	return HangulBase <= r && r < HangulEnd
+}
+
+func isHangulWithoutJamoT(r rune) bool {
+	if !isHangul(r) {
+		return false
+	}
+	r -= HangulBase
+	return r < JamoLVTCount && r%JamoTCount == 0
+}
+
+func ccc(r rune) uint8 {
+	return chars[r].ccc
+}
+
+// Insert a rune in a buffer, ordered by Canonical Combining Class.
+func insertOrdered(b Decomposition, r rune) Decomposition {
+	n := len(b)
+	b = append(b, 0)
+	cc := ccc(r)
+	if cc > 0 {
+		// Use bubble sort.
+		for ; n > 0; n-- {
+			if ccc(b[n-1]) <= cc {
+				break
+			}
+			b[n] = b[n-1]
+		}
+	}
+	b[n] = r
+	return b
+}
+
+// Recursively decompose.
+func decomposeRecursive(form int, r rune, d Decomposition) Decomposition {
+	dcomp := chars[r].forms[form].decomp
+	if len(dcomp) == 0 {
+		return insertOrdered(d, r)
+	}
+	for _, c := range dcomp {
+		d = decomposeRecursive(form, c, d)
+	}
+	return d
+}
+
+func completeCharFields(form int) {
+	// Phase 0: pre-expand decomposition.
+	for i := range chars {
+		f := &chars[i].forms[form]
+		if len(f.decomp) == 0 {
+			continue
+		}
+		exp := make(Decomposition, 0)
+		for _, c := range f.decomp {
+			exp = decomposeRecursive(form, c, exp)
+		}
+		f.expandedDecomp = exp
+	}
+
+	// Phase 1: composition exclusion, mark decomposition.
+	for i := range chars {
+		c := &chars[i]
+		f := &c.forms[form]
+
+		// Marks script-specific exclusions and version restricted.
+		f.isOneWay = c.excludeInComp
+
+		// Singletons
+		f.isOneWay = f.isOneWay || len(f.decomp) == 1
+
+		// Non-starter decompositions
+		if len(f.decomp) > 1 {
+			chk := c.ccc != 0 || chars[f.decomp[0]].ccc != 0
+			f.isOneWay = f.isOneWay || chk
+		}
+
+		// Runes that decompose into more than two runes.
+		f.isOneWay = f.isOneWay || len(f.decomp) > 2
+
+		if form == FCompatibility {
+			f.isOneWay = f.isOneWay || hasCompatDecomp(c.codePoint)
+		}
+
+		for _, r := range f.decomp {
+			chars[r].forms[form].inDecomp = true
+		}
+	}
+
+	// Phase 2: forward and backward combining.
+	for i := range chars {
+		c := &chars[i]
+		f := &c.forms[form]
+
+		if !f.isOneWay && len(f.decomp) == 2 {
+			f0 := &chars[f.decomp[0]].forms[form]
+			f1 := &chars[f.decomp[1]].forms[form]
+			if !f0.isOneWay {
+				f0.combinesForward = true
+			}
+			if !f1.isOneWay {
+				f1.combinesBackward = true
+			}
+		}
+		if isHangulWithoutJamoT(rune(i)) {
+			f.combinesForward = true
+		}
+	}
+
+	// Phase 3: quick check values.
+	for i := range chars {
+		c := &chars[i]
+		f := &c.forms[form]
+
+		switch {
+		case len(f.decomp) > 0:
+			f.quickCheck[MDecomposed] = QCNo
+		case isHangul(rune(i)):
+			f.quickCheck[MDecomposed] = QCNo
+		default:
+			f.quickCheck[MDecomposed] = QCYes
+		}
+		switch {
+		case f.isOneWay:
+			f.quickCheck[MComposed] = QCNo
+		case (i & 0xffff00) == JamoLBase:
+			f.quickCheck[MComposed] = QCYes
+			if JamoLBase <= i && i < JamoLEnd {
+				f.combinesForward = true
+			}
+			if JamoVBase <= i && i < JamoVEnd {
+				f.quickCheck[MComposed] = QCMaybe
+				f.combinesBackward = true
+				f.combinesForward = true
+			}
+			if JamoTBase <= i && i < JamoTEnd {
+				f.quickCheck[MComposed] = QCMaybe
+				f.combinesBackward = true
+			}
+		case !f.combinesBackward:
+			f.quickCheck[MComposed] = QCYes
+		default:
+			f.quickCheck[MComposed] = QCMaybe
+		}
+	}
+}
+
+func computeNonStarterCounts() {
+	// Phase 4: leading and trailing non-starter count
+	for i := range chars {
+		c := &chars[i]
+
+		runes := []rune{rune(i)}
+		// We always use FCompatibility so that the CGJ insertion points do not
+		// change for repeated normalizations with different forms.
+		if exp := c.forms[FCompatibility].expandedDecomp; len(exp) > 0 {
+			runes = exp
+		}
+		// We consider runes that combine backwards to be non-starters for the
+		// purpose of Stream-Safe Text Processing.
+		for _, r := range runes {
+			if cr := &chars[r]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
+				break
+			}
+			c.nLeadingNonStarters++
+		}
+		for i := len(runes) - 1; i >= 0; i-- {
+			if cr := &chars[runes[i]]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
+				break
+			}
+			c.nTrailingNonStarters++
+		}
+		if c.nTrailingNonStarters > 3 {
+			log.Fatalf("%U: Decomposition with more than 3 (%d) trailing modifiers (%U)", i, c.nTrailingNonStarters, runes)
+		}
+
+		if isHangul(rune(i)) {
+			c.nTrailingNonStarters = 2
+			if isHangulWithoutJamoT(rune(i)) {
+				c.nTrailingNonStarters = 1
+			}
+		}
+
+		if l, t := c.nLeadingNonStarters, c.nTrailingNonStarters; l > 0 && l != t {
+			log.Fatalf("%U: number of leading and trailing non-starters should be equal (%d vs %d)", i, l, t)
+		}
+		if t := c.nTrailingNonStarters; t > 3 {
+			log.Fatalf("%U: number of trailing non-starters is %d > 3", t)
+		}
+	}
+}
+
+func printBytes(w io.Writer, b []byte, name string) {
+	fmt.Fprintf(w, "// %s: %d bytes\n", name, len(b))
+	fmt.Fprintf(w, "var %s = [...]byte {", name)
+	for i, c := range b {
+		switch {
+		case i%64 == 0:
+			fmt.Fprintf(w, "\n// Bytes %x - %x\n", i, i+63)
+		case i%8 == 0:
+			fmt.Fprintf(w, "\n")
+		}
+		fmt.Fprintf(w, "0x%.2X, ", c)
+	}
+	fmt.Fprint(w, "\n}\n\n")
+}
+
+// See forminfo.go for format.
+func makeEntry(f *FormInfo, c *Char) uint16 {
+	e := uint16(0)
+	if r := c.codePoint; HangulBase <= r && r < HangulEnd {
+		e |= 0x40
+	}
+	if f.combinesForward {
+		e |= 0x20
+	}
+	if f.quickCheck[MDecomposed] == QCNo {
+		e |= 0x4
+	}
+	switch f.quickCheck[MComposed] {
+	case QCYes:
+	case QCNo:
+		e |= 0x10
+	case QCMaybe:
+		e |= 0x18
+	default:
+		log.Fatalf("Illegal quickcheck value %v.", f.quickCheck[MComposed])
+	}
+	e |= uint16(c.nTrailingNonStarters)
+	return e
+}
+
+// decompSet keeps track of unique decompositions, grouped by whether
+// the decomposition is followed by a trailing and/or leading CCC.
+type decompSet [7]map[string]bool
+
+const (
+	normalDecomp = iota
+	firstMulti
+	firstCCC
+	endMulti
+	firstLeadingCCC
+	firstCCCZeroExcept
+	firstStarterWithNLead
+	lastDecomp
+)
+
+var cname = []string{"firstMulti", "firstCCC", "endMulti", "firstLeadingCCC", "firstCCCZeroExcept", "firstStarterWithNLead", "lastDecomp"}
+
+func makeDecompSet() decompSet {
+	m := decompSet{}
+	for i := range m {
+		m[i] = make(map[string]bool)
+	}
+	return m
+}
+func (m *decompSet) insert(key int, s string) {
+	m[key][s] = true
+}
+
+func printCharInfoTables(w io.Writer) int {
+	mkstr := func(r rune, f *FormInfo) (int, string) {
+		d := f.expandedDecomp
+		s := string([]rune(d))
+		if max := 1 << 6; len(s) >= max {
+			const msg = "%U: too many bytes in decomposition: %d >= %d"
+			log.Fatalf(msg, r, len(s), max)
+		}
+		head := uint8(len(s))
+		if f.quickCheck[MComposed] != QCYes {
+			head |= 0x40
+		}
+		if f.combinesForward {
+			head |= 0x80
+		}
+		s = string([]byte{head}) + s
+
+		lccc := ccc(d[0])
+		tccc := ccc(d[len(d)-1])
+		cc := ccc(r)
+		if cc != 0 && lccc == 0 && tccc == 0 {
+			log.Fatalf("%U: trailing and leading ccc are 0 for non-zero ccc %d", r, cc)
+		}
+		if tccc < lccc && lccc != 0 {
+			const msg = "%U: lccc (%d) must be <= tcc (%d)"
+			log.Fatalf(msg, r, lccc, tccc)
+		}
+		index := normalDecomp
+		nTrail := chars[r].nTrailingNonStarters
+		nLead := chars[r].nLeadingNonStarters
+		if tccc > 0 || lccc > 0 || nTrail > 0 {
+			tccc <<= 2
+			tccc |= nTrail
+			s += string([]byte{tccc})
+			index = endMulti
+			for _, r := range d[1:] {
+				if ccc(r) == 0 {
+					index = firstCCC
+				}
+			}
+			if lccc > 0 || nLead > 0 {
+				s += string([]byte{lccc})
+				if index == firstCCC {
+					log.Fatalf("%U: multi-segment decomposition not supported for decompositions with leading CCC != 0", r)
+				}
+				index = firstLeadingCCC
+			}
+			if cc != lccc {
+				if cc != 0 {
+					log.Fatalf("%U: for lccc != ccc, expected ccc to be 0; was %d", r, cc)
+				}
+				index = firstCCCZeroExcept
+			}
+		} else if len(d) > 1 {
+			index = firstMulti
+		}
+		return index, s
+	}
+
+	decompSet := makeDecompSet()
+	const nLeadStr = "\x00\x01" // 0-byte length and tccc with nTrail.
+	decompSet.insert(firstStarterWithNLead, nLeadStr)
+
+	// Store the uniqued decompositions in a byte buffer,
+	// preceded by their byte length.
+	for _, c := range chars {
+		for _, f := range c.forms {
+			if len(f.expandedDecomp) == 0 {
+				continue
+			}
+			if f.combinesBackward {
+				log.Fatalf("%U: combinesBackward and decompose", c.codePoint)
+			}
+			index, s := mkstr(c.codePoint, &f)
+			decompSet.insert(index, s)
+		}
+	}
+
+	decompositions := bytes.NewBuffer(make([]byte, 0, 10000))
+	size := 0
+	positionMap := make(map[string]uint16)
+	decompositions.WriteString("\000")
+	fmt.Fprintln(w, "const (")
+	for i, m := range decompSet {
+		sa := []string{}
+		for s := range m {
+			sa = append(sa, s)
+		}
+		sort.Strings(sa)
+		for _, s := range sa {
+			p := decompositions.Len()
+			decompositions.WriteString(s)
+			positionMap[s] = uint16(p)
+		}
+		if cname[i] != "" {
+			fmt.Fprintf(w, "%s = 0x%X\n", cname[i], decompositions.Len())
+		}
+	}
+	fmt.Fprintln(w, "maxDecomp = 0x8000")
+	fmt.Fprintln(w, ")")
+	b := decompositions.Bytes()
+	printBytes(w, b, "decomps")
+	size += len(b)
+
+	varnames := []string{"nfc", "nfkc"}
+	for i := 0; i < FNumberOfFormTypes; i++ {
+		trie := triegen.NewTrie(varnames[i])
+
+		for r, c := range chars {
+			f := c.forms[i]
+			d := f.expandedDecomp
+			if len(d) != 0 {
+				_, key := mkstr(c.codePoint, &f)
+				trie.Insert(rune(r), uint64(positionMap[key]))
+				if c.ccc != ccc(d[0]) {
+					// We assume the lead ccc of a decomposition !=0 in this case.
+					if ccc(d[0]) == 0 {
+						log.Fatalf("Expected leading CCC to be non-zero; ccc is %d", c.ccc)
+					}
+				}
+			} else if c.nLeadingNonStarters > 0 && len(f.expandedDecomp) == 0 && c.ccc == 0 && !f.combinesBackward {
+				// Handle cases where it can't be detected that the nLead should be equal
+				// to nTrail.
+				trie.Insert(c.codePoint, uint64(positionMap[nLeadStr]))
+			} else if v := makeEntry(&f, &c)<<8 | uint16(c.ccc); v != 0 {
+				trie.Insert(c.codePoint, uint64(0x8000|v))
+			}
+		}
+		sz, err := trie.Gen(w, triegen.Compact(&normCompacter{name: varnames[i]}))
+		if err != nil {
+			log.Fatal(err)
+		}
+		size += sz
+	}
+	return size
+}
+
+func contains(sa []string, s string) bool {
+	for _, a := range sa {
+		if a == s {
+			return true
+		}
+	}
+	return false
+}
+
+func makeTables() {
+	w := &bytes.Buffer{}
+
+	size := 0
+	if *tablelist == "" {
+		return
+	}
+	list := strings.Split(*tablelist, ",")
+	if *tablelist == "all" {
+		list = []string{"recomp", "info"}
+	}
+
+	// Compute maximum decomposition size.
+	max := 0
+	for _, c := range chars {
+		if n := len(string(c.forms[FCompatibility].expandedDecomp)); n > max {
+			max = n
+		}
+	}
+	fmt.Fprintln(w, `import "sync"`)
+	fmt.Fprintln(w)
+
+	fmt.Fprintln(w, "const (")
+	fmt.Fprintln(w, "\t// Version is the Unicode edition from which the tables are derived.")
+	fmt.Fprintf(w, "\tVersion = %q\n", gen.UnicodeVersion())
+	fmt.Fprintln(w)
+	fmt.Fprintln(w, "\t// MaxTransformChunkSize indicates the maximum number of bytes that Transform")
+	fmt.Fprintln(w, "\t// may need to write atomically for any Form. Making a destination buffer at")
+	fmt.Fprintln(w, "\t// least this size ensures that Transform can always make progress and that")
+	fmt.Fprintln(w, "\t// the user does not need to grow the buffer on an ErrShortDst.")
+	fmt.Fprintf(w, "\tMaxTransformChunkSize = %d+maxNonStarters*4\n", len(string(0x034F))+max)
+	fmt.Fprintln(w, ")\n")
+
+	// Print the CCC remap table.
+	size += len(cccMap)
+	fmt.Fprintf(w, "var ccc = [%d]uint8{", len(cccMap))
+	for i := 0; i < len(cccMap); i++ {
+		if i%8 == 0 {
+			fmt.Fprintln(w)
+		}
+		fmt.Fprintf(w, "%3d, ", cccMap[uint8(i)])
+	}
+	fmt.Fprintln(w, "\n}\n")
+
+	if contains(list, "info") {
+		size += printCharInfoTables(w)
+	}
+
+	if contains(list, "recomp") {
+		// Note that we use 32 bit keys, instead of 64 bit.
+		// This clips the bits of three entries, but we know
+		// this won't cause a collision. The compiler will catch
+		// any changes made to UnicodeData.txt that introduces
+		// a collision.
+		// Note that the recomposition map for NFC and NFKC
+		// are identical.
+
+		// Recomposition map
+		nrentries := 0
+		for _, c := range chars {
+			f := c.forms[FCanonical]
+			if !f.isOneWay && len(f.decomp) > 0 {
+				nrentries++
+			}
+		}
+		sz := nrentries * 8
+		size += sz
+		fmt.Fprintf(w, "// recompMap: %d bytes (entries only)\n", sz)
+		fmt.Fprintln(w, "var recompMap map[uint32]rune")
+		fmt.Fprintln(w, "var recompMapOnce sync.Once\n")
+		fmt.Fprintln(w, `const recompMapPacked = "" +`)
+		var buf [8]byte
+		for i, c := range chars {
+			f := c.forms[FCanonical]
+			d := f.decomp
+			if !f.isOneWay && len(d) > 0 {
+				key := uint32(uint16(d[0]))<<16 + uint32(uint16(d[1]))
+				binary.BigEndian.PutUint32(buf[:4], key)
+				binary.BigEndian.PutUint32(buf[4:], uint32(i))
+				fmt.Fprintf(w, "\t\t%q + // 0x%.8X: 0x%.8X\n", string(buf[:]), key, uint32(i))
+			}
+		}
+		// hack so we don't have to special case the trailing plus sign
+		fmt.Fprintf(w, `	""`)
+		fmt.Fprintln(w)
+	}
+
+	fmt.Fprintf(w, "// Total size of tables: %dKB (%d bytes)\n", (size+512)/1024, size)
+	gen.WriteVersionedGoFile("tables.go", "norm", w.Bytes())
+}
+
+func printChars() {
+	if *verbose {
+		for _, c := range chars {
+			if !c.isValid() || c.state == SMissing {
+				continue
+			}
+			fmt.Println(c)
+		}
+	}
+}
+
+// verifyComputed does various consistency tests.
+func verifyComputed() {
+	for i, c := range chars {
+		for _, f := range c.forms {
+			isNo := (f.quickCheck[MDecomposed] == QCNo)
+			if (len(f.decomp) > 0) != isNo && !isHangul(rune(i)) {
+				log.Fatalf("%U: NF*D QC must be No if rune decomposes", i)
+			}
+
+			isMaybe := f.quickCheck[MComposed] == QCMaybe
+			if f.combinesBackward != isMaybe {
+				log.Fatalf("%U: NF*C QC must be Maybe if combinesBackward", i)
+			}
+			if len(f.decomp) > 0 && f.combinesForward && isMaybe {
+				log.Fatalf("%U: NF*C QC must be Yes or No if combinesForward and decomposes", i)
+			}
+
+			if len(f.expandedDecomp) != 0 {
+				continue
+			}
+			if a, b := c.nLeadingNonStarters > 0, (c.ccc > 0 || f.combinesBackward); a != b {
+				// We accept these runes to be treated differently (it only affects
+				// segment breaking in iteration, most likely on improper use), but
+				// reconsider if more characters are added.
+				// U+FF9E HALFWIDTH KATAKANA VOICED SOUND MARK;Lm;0;L;<narrow> 3099;;;;N;;;;;
+				// U+FF9F HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK;Lm;0;L;<narrow> 309A;;;;N;;;;;
+				// U+3133 HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<compat> 11AA;;;;N;HANGUL LETTER GIYEOG SIOS;;;;
+				// U+318E HANGUL LETTER ARAEAE;Lo;0;L;<compat> 11A1;;;;N;HANGUL LETTER ALAE AE;;;;
+				// U+FFA3 HALFWIDTH HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<narrow> 3133;;;;N;HALFWIDTH HANGUL LETTER GIYEOG SIOS;;;;
+				// U+FFDC HALFWIDTH HANGUL LETTER I;Lo;0;L;<narrow> 3163;;;;N;;;;;
+				if i != 0xFF9E && i != 0xFF9F && !(0x3133 <= i && i <= 0x318E) && !(0xFFA3 <= i && i <= 0xFFDC) {
+					log.Fatalf("%U: nLead was %v; want %v", i, a, b)
+				}
+			}
+		}
+		nfc := c.forms[FCanonical]
+		nfkc := c.forms[FCompatibility]
+		if nfc.combinesBackward != nfkc.combinesBackward {
+			log.Fatalf("%U: Cannot combine combinesBackward\n", c.codePoint)
+		}
+	}
+}
+
+// Use values in DerivedNormalizationProps.txt to compare against the
+// values we computed.
+// DerivedNormalizationProps.txt has form:
+// 00C0..00C5    ; NFD_QC; N # ...
+// 0374          ; NFD_QC; N # ...
+// See https://unicode.org/reports/tr44/ for full explanation
+func testDerived() {
+	f := gen.OpenUCDFile("DerivedNormalizationProps.txt")
+	defer f.Close()
+	p := ucd.New(f)
+	for p.Next() {
+		r := p.Rune(0)
+		c := &chars[r]
+
+		var ftype, mode int
+		qt := p.String(1)
+		switch qt {
+		case "NFC_QC":
+			ftype, mode = FCanonical, MComposed
+		case "NFD_QC":
+			ftype, mode = FCanonical, MDecomposed
+		case "NFKC_QC":
+			ftype, mode = FCompatibility, MComposed
+		case "NFKD_QC":
+			ftype, mode = FCompatibility, MDecomposed
+		default:
+			continue
+		}
+		var qr QCResult
+		switch p.String(2) {
+		case "Y":
+			qr = QCYes
+		case "N":
+			qr = QCNo
+		case "M":
+			qr = QCMaybe
+		default:
+			log.Fatalf(`Unexpected quick check value "%s"`, p.String(2))
+		}
+		if got := c.forms[ftype].quickCheck[mode]; got != qr {
+			log.Printf("%U: FAILED %s (was %v need %v)\n", r, qt, got, qr)
+		}
+		c.forms[ftype].verified[mode] = true
+	}
+	if err := p.Err(); err != nil {
+		log.Fatal(err)
+	}
+	// Any unspecified value must be QCYes. Verify this.
+	for i, c := range chars {
+		for j, fd := range c.forms {
+			for k, qr := range fd.quickCheck {
+				if !fd.verified[k] && qr != QCYes {
+					m := "%U: FAIL F:%d M:%d (was %v need Yes) %s\n"
+					log.Printf(m, i, j, k, qr, c.name)
+				}
+			}
+		}
+	}
+}
+
+var testHeader = `const (
+	Yes = iota
+	No
+	Maybe
+)
+
+type formData struct {
+	qc              uint8
+	combinesForward bool
+	decomposition   string
+}
+
+type runeData struct {
+	r      rune
+	ccc    uint8
+	nLead  uint8
+	nTrail uint8
+	f      [2]formData // 0: canonical; 1: compatibility
+}
+
+func f(qc uint8, cf bool, dec string) [2]formData {
+	return [2]formData{{qc, cf, dec}, {qc, cf, dec}}
+}
+
+func g(qc, qck uint8, cf, cfk bool, d, dk string) [2]formData {
+	return [2]formData{{qc, cf, d}, {qck, cfk, dk}}
+}
+
+var testData = []runeData{
+`
+
+func printTestdata() {
+	type lastInfo struct {
+		ccc    uint8
+		nLead  uint8
+		nTrail uint8
+		f      string
+	}
+
+	last := lastInfo{}
+	w := &bytes.Buffer{}
+	fmt.Fprintf(w, testHeader)
+	for r, c := range chars {
+		f := c.forms[FCanonical]
+		qc, cf, d := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
+		f = c.forms[FCompatibility]
+		qck, cfk, dk := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
+		s := ""
+		if d == dk && qc == qck && cf == cfk {
+			s = fmt.Sprintf("f(%s, %v, %q)", qc, cf, d)
+		} else {
+			s = fmt.Sprintf("g(%s, %s, %v, %v, %q, %q)", qc, qck, cf, cfk, d, dk)
+		}
+		current := lastInfo{c.ccc, c.nLeadingNonStarters, c.nTrailingNonStarters, s}
+		if last != current {
+			fmt.Fprintf(w, "\t{0x%x, %d, %d, %d, %s},\n", r, c.origCCC, c.nLeadingNonStarters, c.nTrailingNonStarters, s)
+			last = current
+		}
+	}
+	fmt.Fprintln(w, "}")
+	gen.WriteVersionedGoFile("data_test.go", "norm", w.Bytes())
+}

vendor/golang.org/x/text/unicode/norm/triegen.go

+// 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.
+
+// +build ignore
+
+// Trie table generator.
+// Used by make*tables tools to generate a go file with trie data structures
+// for mapping UTF-8 to a 16-bit value. All but the last byte in a UTF-8 byte
+// sequence are used to lookup offsets in the index table to be used for the
+// next byte. The last byte is used to index into a table with 16-bit values.
+
+package main
+
+import (
+	"fmt"
+	"io"
+)
+
+const maxSparseEntries = 16
+
+type normCompacter struct {
+	sparseBlocks [][]uint64
+	sparseOffset []uint16
+	sparseCount  int
+	name         string
+}
+
+func mostFrequentStride(a []uint64) int {
+	counts := make(map[int]int)
+	var v int
+	for _, x := range a {
+		if stride := int(x) - v; v != 0 && stride >= 0 {
+			counts[stride]++
+		}
+		v = int(x)
+	}
+	var maxs, maxc int
+	for stride, cnt := range counts {
+		if cnt > maxc || (cnt == maxc && stride < maxs) {
+			maxs, maxc = stride, cnt
+		}
+	}
+	return maxs
+}
+
+func countSparseEntries(a []uint64) int {
+	stride := mostFrequentStride(a)
+	var v, count int
+	for _, tv := range a {
+		if int(tv)-v != stride {
+			if tv != 0 {
+				count++
+			}
+		}
+		v = int(tv)
+	}
+	return count
+}
+
+func (c *normCompacter) Size(v []uint64) (sz int, ok bool) {
+	if n := countSparseEntries(v); n <= maxSparseEntries {
+		return (n+1)*4 + 2, true
+	}
+	return 0, false
+}
+
+func (c *normCompacter) Store(v []uint64) uint32 {
+	h := uint32(len(c.sparseOffset))
+	c.sparseBlocks = append(c.sparseBlocks, v)
+	c.sparseOffset = append(c.sparseOffset, uint16(c.sparseCount))
+	c.sparseCount += countSparseEntries(v) + 1
+	return h
+}
+
+func (c *normCompacter) Handler() string {
+	return c.name + "Sparse.lookup"
+}
+
+func (c *normCompacter) Print(w io.Writer) (retErr error) {
+	p := func(f string, x ...interface{}) {
+		if _, err := fmt.Fprintf(w, f, x...); retErr == nil && err != nil {
+			retErr = err
+		}
+	}
+
+	ls := len(c.sparseBlocks)
+	p("// %sSparseOffset: %d entries, %d bytes\n", c.name, ls, ls*2)
+	p("var %sSparseOffset = %#v\n\n", c.name, c.sparseOffset)
+
+	ns := c.sparseCount
+	p("// %sSparseValues: %d entries, %d bytes\n", c.name, ns, ns*4)
+	p("var %sSparseValues = [%d]valueRange {", c.name, ns)
+	for i, b := range c.sparseBlocks {
+		p("\n// Block %#x, offset %#x", i, c.sparseOffset[i])
+		var v int
+		stride := mostFrequentStride(b)
+		n := countSparseEntries(b)
+		p("\n{value:%#04x,lo:%#02x},", stride, uint8(n))
+		for i, nv := range b {
+			if int(nv)-v != stride {
+				if v != 0 {
+					p(",hi:%#02x},", 0x80+i-1)
+				}
+				if nv != 0 {
+					p("\n{value:%#04x,lo:%#02x", nv, 0x80+i)
+				}
+			}
+			v = int(nv)
+		}
+		if v != 0 {
+			p(",hi:%#02x},", 0x80+len(b)-1)
+		}
+	}
+	p("\n}\n\n")
+	return
+}

vendor/golang.org/x/text/width/gen.go

+// Copyright 2015 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.
+
+// +build ignore
+
+// This program generates the trie for width operations. The generated table
+// includes width category information as well as the normalization mappings.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"log"
+	"math"
+	"unicode/utf8"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/triegen"
+)
+
+// See gen_common.go for flags.
+
+func main() {
+	gen.Init()
+	genTables()
+	genTests()
+	gen.Repackage("gen_trieval.go", "trieval.go", "width")
+	gen.Repackage("gen_common.go", "common_test.go", "width")
+}
+
+func genTables() {
+	t := triegen.NewTrie("width")
+	// fold and inverse mappings. See mapComment for a description of the format
+	// of each entry. Add dummy value to make an index of 0 mean no mapping.
+	inverse := [][4]byte{{}}
+	mapping := map[[4]byte]int{[4]byte{}: 0}
+
+	getWidthData(func(r rune, tag elem, alt rune) {
+		idx := 0
+		if alt != 0 {
+			var buf [4]byte
+			buf[0] = byte(utf8.EncodeRune(buf[1:], alt))
+			s := string(r)
+			buf[buf[0]] ^= s[len(s)-1]
+			var ok bool
+			if idx, ok = mapping[buf]; !ok {
+				idx = len(mapping)
+				if idx > math.MaxUint8 {
+					log.Fatalf("Index %d does not fit in a byte.", idx)
+				}
+				mapping[buf] = idx
+				inverse = append(inverse, buf)
+			}
+		}
+		t.Insert(r, uint64(tag|elem(idx)))
+	})
+
+	w := &bytes.Buffer{}
+	gen.WriteUnicodeVersion(w)
+
+	sz, err := t.Gen(w)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	sz += writeMappings(w, inverse)
+
+	fmt.Fprintf(w, "// Total table size %d bytes (%dKiB)\n", sz, sz/1024)
+
+	gen.WriteVersionedGoFile(*outputFile, "width", w.Bytes())
+}
+
+const inverseDataComment = `
+// inverseData contains 4-byte entries of the following format:
+//   <length> <modified UTF-8-encoded rune> <0 padding>
+// The last byte of the UTF-8-encoded rune is xor-ed with the last byte of the
+// UTF-8 encoding of the original rune. Mappings often have the following
+// pattern:
+//   Ａ -> A  (U+FF21 -> U+0041)
+//   Ｂ -> B  (U+FF22 -> U+0042)
+//   ...
+// By xor-ing the last byte the same entry can be shared by many mappings. This
+// reduces the total number of distinct entries by about two thirds.
+// The resulting entry for the aforementioned mappings is
+//   { 0x01, 0xE0, 0x00, 0x00 }
+// Using this entry to map U+FF21 (UTF-8 [EF BC A1]), we get
+//   E0 ^ A1 = 41.
+// Similarly, for U+FF22 (UTF-8 [EF BC A2]), we get
+//   E0 ^ A2 = 42.
+// Note that because of the xor-ing, the byte sequence stored in the entry is
+// not valid UTF-8.`
+
+func writeMappings(w io.Writer, data [][4]byte) int {
+	fmt.Fprintln(w, inverseDataComment)
+	fmt.Fprintf(w, "var inverseData = [%d][4]byte{\n", len(data))
+	for _, x := range data {
+		fmt.Fprintf(w, "{ 0x%02x, 0x%02x, 0x%02x, 0x%02x },\n", x[0], x[1], x[2], x[3])
+	}
+	fmt.Fprintln(w, "}")
+	return len(data) * 4
+}
+
+func genTests() {
+	w := &bytes.Buffer{}
+	fmt.Fprintf(w, "\nvar mapRunes = map[rune]struct{r rune; e elem}{\n")
+	getWidthData(func(r rune, tag elem, alt rune) {
+		if alt != 0 {
+			fmt.Fprintf(w, "\t0x%X: {0x%X, 0x%X},\n", r, alt, tag)
+		}
+	})
+	fmt.Fprintln(w, "}")
+	gen.WriteGoFile("runes_test.go", "width", w.Bytes())
+}

vendor/golang.org/x/text/width/gen_common.go

+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+// This code is shared between the main code generator and the test code.
+
+import (
+	"flag"
+	"log"
+	"strconv"
+	"strings"
+
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/internal/ucd"
+)
+
+var (
+	outputFile = flag.String("out", "tables.go", "output file")
+)
+
+var typeMap = map[string]elem{
+	"A":  tagAmbiguous,
+	"N":  tagNeutral,
+	"Na": tagNarrow,
+	"W":  tagWide,
+	"F":  tagFullwidth,
+	"H":  tagHalfwidth,
+}
+
+// getWidthData calls f for every entry for which it is defined.
+//
+// f may be called multiple times for the same rune. The last call to f is the
+// correct value. f is not called for all runes. The default tag type is
+// Neutral.
+func getWidthData(f func(r rune, tag elem, alt rune)) {
+	// Set the default values for Unified Ideographs. In line with Annex 11,
+	// we encode full ranges instead of the defined runes in Unified_Ideograph.
+	for _, b := range []struct{ lo, hi rune }{
+		{0x4E00, 0x9FFF},   // the CJK Unified Ideographs block,
+		{0x3400, 0x4DBF},   // the CJK Unified Ideographs Externsion A block,
+		{0xF900, 0xFAFF},   // the CJK Compatibility Ideographs block,
+		{0x20000, 0x2FFFF}, // the Supplementary Ideographic Plane,
+		{0x30000, 0x3FFFF}, // the Tertiary Ideographic Plane,
+	} {
+		for r := b.lo; r <= b.hi; r++ {
+			f(r, tagWide, 0)
+		}
+	}
+
+	inverse := map[rune]rune{}
+	maps := map[string]bool{
+		"<wide>":   true,
+		"<narrow>": true,
+	}
+
+	// We cannot reuse package norm's decomposition, as we need an unexpanded
+	// decomposition. We make use of the opportunity to verify that the
+	// decomposition type is as expected.
+	ucd.Parse(gen.OpenUCDFile("UnicodeData.txt"), func(p *ucd.Parser) {
+		r := p.Rune(0)
+		s := strings.SplitN(p.String(ucd.DecompMapping), " ", 2)
+		if !maps[s[0]] {
+			return
+		}
+		x, err := strconv.ParseUint(s[1], 16, 32)
+		if err != nil {
+			log.Fatalf("Error parsing rune %q", s[1])
+		}
+		if inverse[r] != 0 || inverse[rune(x)] != 0 {
+			log.Fatalf("Circular dependency in mapping between %U and %U", r, x)
+		}
+		inverse[r] = rune(x)
+		inverse[rune(x)] = r
+	})
+
+	// <rune range>;<type>
+	ucd.Parse(gen.OpenUCDFile("EastAsianWidth.txt"), func(p *ucd.Parser) {
+		tag, ok := typeMap[p.String(1)]
+		if !ok {
+			log.Fatalf("Unknown width type %q", p.String(1))
+		}
+		r := p.Rune(0)
+		alt, ok := inverse[r]
+		if tag == tagFullwidth || tag == tagHalfwidth && r != wonSign {
+			tag |= tagNeedsFold
+			if !ok {
+				log.Fatalf("Narrow or wide rune %U has no decomposition", r)
+			}
+		}
+		f(r, tag, alt)
+	})
+}

vendor/golang.org/x/text/width/gen_trieval.go

+// Copyright 2015 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.
+
+// +build ignore
+
+package main
+
+// elem is an entry of the width trie. The high byte is used to encode the type
+// of the rune. The low byte is used to store the index to a mapping entry in
+// the inverseData array.
+type elem uint16
+
+const (
+	tagNeutral elem = iota << typeShift
+	tagAmbiguous
+	tagWide
+	tagNarrow
+	tagFullwidth
+	tagHalfwidth
+)
+
+const (
+	numTypeBits = 3
+	typeShift   = 16 - numTypeBits
+
+	// tagNeedsFold is true for all fullwidth and halfwidth runes except for
+	// the Won sign U+20A9.
+	tagNeedsFold = 0x1000
+
+	// The Korean Won sign is halfwidth, but SHOULD NOT be mapped to a wide
+	// variant.
+	wonSign rune = 0x20A9
+)

vendor/golang.org/x/tools/go/gcexportdata/main.go

+// 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.
+
+// +build ignore
+
+// The gcexportdata command is a diagnostic tool that displays the
+// contents of gc export data files.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"go/token"
+	"go/types"
+	"log"
+	"os"
+
+	"golang.org/x/tools/go/gcexportdata"
+	"golang.org/x/tools/go/types/typeutil"
+)
+
+var packageFlag = flag.String("package", "", "alternative package to print")
+
+func main() {
+	log.SetPrefix("gcexportdata: ")
+	log.SetFlags(0)
+	flag.Usage = func() {
+		fmt.Fprintln(os.Stderr, "usage: gcexportdata [-package path] file.a")
+	}
+	flag.Parse()
+	if flag.NArg() != 1 {
+		flag.Usage()
+		os.Exit(2)
+	}
+	filename := flag.Args()[0]
+
+	f, err := os.Open(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	r, err := gcexportdata.NewReader(f)
+	if err != nil {
+		log.Fatalf("%s: %s", filename, err)
+	}
+
+	// Decode the package.
+	const primary = "<primary>"
+	imports := make(map[string]*types.Package)
+	fset := token.NewFileSet()
+	pkg, err := gcexportdata.Read(r, fset, imports, primary)
+	if err != nil {
+		log.Fatalf("%s: %s", filename, err)
+	}
+
+	// Optionally select an indirectly mentioned package.
+	if *packageFlag != "" {
+		pkg = imports[*packageFlag]
+		if pkg == nil {
+			fmt.Fprintf(os.Stderr, "export data file %s does not mention %s; has:\n",
+				filename, *packageFlag)
+			for p := range imports {
+				if p != primary {
+					fmt.Fprintf(os.Stderr, "\t%s\n", p)
+				}
+			}
+			os.Exit(1)
+		}
+	}
+
+	// Print all package-level declarations, including non-exported ones.
+	fmt.Printf("package %s\n", pkg.Name())
+	for _, imp := range pkg.Imports() {
+		fmt.Printf("import %q\n", imp.Path())
+	}
+	qual := func(p *types.Package) string {
+		if pkg == p {
+			return ""
+		}
+		return p.Name()
+	}
+	scope := pkg.Scope()
+	for _, name := range scope.Names() {
+		obj := scope.Lookup(name)
+		fmt.Printf("%s: %s\n",
+			fset.Position(obj.Pos()),
+			types.ObjectString(obj, qual))
+
+		// For types, print each method.
+		if _, ok := obj.(*types.TypeName); ok {
+			for _, method := range typeutil.IntuitiveMethodSet(obj.Type(), nil) {
+				fmt.Printf("%s: %s\n",
+					fset.Position(method.Obj().Pos()),
+					types.SelectionString(method, qual))
+			}
+		}
+	}
+}

vendor/golang.org/x/tools/internal/imports/mkindex.go

+// +build ignore
+
+// 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.
+
+// Command mkindex creates the file "pkgindex.go" containing an index of the Go
+// standard library. The file is intended to be built as part of the imports
+// package, so that the package may be used in environments where a GOROOT is
+// not available (such as App Engine).
+package imports
+
+import (
+	"bytes"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/format"
+	"go/parser"
+	"go/token"
+	"io/ioutil"
+	"log"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+var (
+	pkgIndex = make(map[string][]pkg)
+	exports  = make(map[string]map[string]bool)
+)
+
+func main() {
+	// Don't use GOPATH.
+	ctx := build.Default
+	ctx.GOPATH = ""
+
+	// Populate pkgIndex global from GOROOT.
+	for _, path := range ctx.SrcDirs() {
+		f, err := os.Open(path)
+		if err != nil {
+			log.Print(err)
+			continue
+		}
+		children, err := f.Readdir(-1)
+		f.Close()
+		if err != nil {
+			log.Print(err)
+			continue
+		}
+		for _, child := range children {
+			if child.IsDir() {
+				loadPkg(path, child.Name())
+			}
+		}
+	}
+	// Populate exports global.
+	for _, ps := range pkgIndex {
+		for _, p := range ps {
+			e := loadExports(p.dir)
+			if e != nil {
+				exports[p.dir] = e
+			}
+		}
+	}
+
+	// Construct source file.
+	var buf bytes.Buffer
+	fmt.Fprint(&buf, pkgIndexHead)
+	fmt.Fprintf(&buf, "var pkgIndexMaster = %#v\n", pkgIndex)
+	fmt.Fprintf(&buf, "var exportsMaster = %#v\n", exports)
+	src := buf.Bytes()
+
+	// Replace main.pkg type name with pkg.
+	src = bytes.Replace(src, []byte("main.pkg"), []byte("pkg"), -1)
+	// Replace actual GOROOT with "/go".
+	src = bytes.Replace(src, []byte(ctx.GOROOT), []byte("/go"), -1)
+	// Add some line wrapping.
+	src = bytes.Replace(src, []byte("}, "), []byte("},\n"), -1)
+	src = bytes.Replace(src, []byte("true, "), []byte("true,\n"), -1)
+
+	var err error
+	src, err = format.Source(src)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Write out source file.
+	err = ioutil.WriteFile("pkgindex.go", src, 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+const pkgIndexHead = `package imports
+
+func init() {
+	pkgIndexOnce.Do(func() {
+		pkgIndex.m = pkgIndexMaster
+	})
+	loadExports = func(dir string) map[string]bool {
+		return exportsMaster[dir]
+	}
+}
+`
+
+type pkg struct {
+	importpath string // full pkg import path, e.g. "net/http"
+	dir        string // absolute file path to pkg directory e.g. "/usr/lib/go/src/fmt"
+}
+
+var fset = token.NewFileSet()
+
+func loadPkg(root, importpath string) {
+	shortName := path.Base(importpath)
+	if shortName == "testdata" {
+		return
+	}
+
+	dir := filepath.Join(root, importpath)
+	pkgIndex[shortName] = append(pkgIndex[shortName], pkg{
+		importpath: importpath,
+		dir:        dir,
+	})
+
+	pkgDir, err := os.Open(dir)
+	if err != nil {
+		return
+	}
+	children, err := pkgDir.Readdir(-1)
+	pkgDir.Close()
+	if err != nil {
+		return
+	}
+	for _, child := range children {
+		name := child.Name()
+		if name == "" {
+			continue
+		}
+		if c := name[0]; c == '.' || ('0' <= c && c <= '9') {
+			continue
+		}
+		if child.IsDir() {
+			loadPkg(root, filepath.Join(importpath, name))
+		}
+	}
+}
+
+func loadExports(dir string) map[string]bool {
+	exports := make(map[string]bool)
+	buildPkg, err := build.ImportDir(dir, 0)
+	if err != nil {
+		if strings.Contains(err.Error(), "no buildable Go source files in") {
+			return nil
+		}
+		log.Printf("could not import %q: %v", dir, err)
+		return nil
+	}
+	for _, file := range buildPkg.GoFiles {
+		f, err := parser.ParseFile(fset, filepath.Join(dir, file), nil, 0)
+		if err != nil {
+			log.Printf("could not parse %q: %v", file, err)
+			continue
+		}
+		for name := range f.Scope.Objects {
+			if ast.IsExported(name) {
+				exports[name] = true
+			}
+		}
+	}
+	return exports
+}

vendor/golang.org/x/tools/internal/imports/mkstdlib.go

+// +build ignore
+
+// mkstdlib generates the zstdlib.go file, containing the Go standard
+// library API symbols. It's baked into the binary to avoid scanning
+// GOPATH in the common case.
+package imports
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"sort"
+	"strings"
+)
+
+func mustOpen(name string) io.Reader {
+	f, err := os.Open(name)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return f
+}
+
+func api(base string) string {
+	return filepath.Join(runtime.GOROOT(), "api", base)
+}
+
+var sym = regexp.MustCompile(`^pkg (\S+).*?, (?:var|func|type|const) ([A-Z]\w*)`)
+
+var unsafeSyms = map[string]bool{"Alignof": true, "ArbitraryType": true, "Offsetof": true, "Pointer": true, "Sizeof": true}
+
+func main() {
+	var buf bytes.Buffer
+	outf := func(format string, args ...interface{}) {
+		fmt.Fprintf(&buf, format, args...)
+	}
+	outf("// Code generated by mkstdlib.go. DO NOT EDIT.\n\n")
+	outf("package imports\n")
+	outf("var stdlib = map[string]map[string]bool{\n")
+	f := io.MultiReader(
+		mustOpen(api("go1.txt")),
+		mustOpen(api("go1.1.txt")),
+		mustOpen(api("go1.2.txt")),
+		mustOpen(api("go1.3.txt")),
+		mustOpen(api("go1.4.txt")),
+		mustOpen(api("go1.5.txt")),
+		mustOpen(api("go1.6.txt")),
+		mustOpen(api("go1.7.txt")),
+		mustOpen(api("go1.8.txt")),
+		mustOpen(api("go1.9.txt")),
+		mustOpen(api("go1.10.txt")),
+		mustOpen(api("go1.11.txt")),
+		mustOpen(api("go1.12.txt")),
+
+		// The API of the syscall/js package needs to be computed explicitly,
+		// because it's not included in the GOROOT/api/go1.*.txt files at this time.
+		syscallJSAPI(),
+	)
+	sc := bufio.NewScanner(f)
+
+	pkgs := map[string]map[string]bool{
+		"unsafe": unsafeSyms,
+	}
+	paths := []string{"unsafe"}
+
+	for sc.Scan() {
+		l := sc.Text()
+		has := func(v string) bool { return strings.Contains(l, v) }
+		if has("struct, ") || has("interface, ") || has(", method (") {
+			continue
+		}
+		if m := sym.FindStringSubmatch(l); m != nil {
+			path, sym := m[1], m[2]
+
+			if _, ok := pkgs[path]; !ok {
+				pkgs[path] = map[string]bool{}
+				paths = append(paths, path)
+			}
+			pkgs[path][sym] = true
+		}
+	}
+	if err := sc.Err(); err != nil {
+		log.Fatal(err)
+	}
+	sort.Strings(paths)
+	for _, path := range paths {
+		outf("\t%q: map[string]bool{\n", path)
+		pkg := pkgs[path]
+		var syms []string
+		for sym := range pkg {
+			syms = append(syms, sym)
+		}
+		sort.Strings(syms)
+		for _, sym := range syms {
+			outf("\t\t%q: true,\n", sym)
+		}
+		outf("},\n")
+	}
+	outf("}\n")
+	fmtbuf, err := format.Source(buf.Bytes())
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = ioutil.WriteFile("zstdlib.go", fmtbuf, 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+// syscallJSAPI returns the API of the syscall/js package.
+// It's computed from the contents of $(go env GOROOT)/src/syscall/js.
+func syscallJSAPI() io.Reader {
+	var exeSuffix string
+	if runtime.GOOS == "windows" {
+		exeSuffix = ".exe"
+	}
+	cmd := exec.Command("go"+exeSuffix, "run", "cmd/api", "-contexts", "js-wasm", "syscall/js")
+	out, err := cmd.Output()
+	if err != nil {
+		log.Fatalln(err)
+	}
+	return bytes.NewReader(out)
+}