/usr/share/gocode/src/code.google.com/p/go.net/ipv4/sockopt_windows.go is in golang-go.net-dev 0.0~hg20131201-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | // 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.
package ipv4
import (
"net"
"os"
"syscall"
"unsafe"
)
// Please refer to the online manual;
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx
func ipv4TOS(fd syscall.Handle) (int, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIP, syscall.IP_TOS, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v), nil
}
func setIPv4TOS(fd syscall.Handle, v int) error {
vv := int32(v)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_TOS, (*byte)(unsafe.Pointer(&vv)), 4))
}
func ipv4TTL(fd syscall.Handle) (int, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIP, syscall.IP_TTL, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v), nil
}
func setIPv4TTL(fd syscall.Handle, v int) error {
vv := int32(v)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_TTL, (*byte)(unsafe.Pointer(&vv)), 4))
}
func ipv4MulticastTTL(fd syscall.Handle) (int, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIP, syscall.IP_MULTICAST_TTL, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v), nil
}
func setIPv4MulticastTTL(fd syscall.Handle, v int) error {
vv := int32(v)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_MULTICAST_TTL, (*byte)(unsafe.Pointer(&vv)), 4))
}
func ipv4ReceiveTTL(fd syscall.Handle) (bool, error) {
// NOTE: Not supported yet on any Windows
return false, syscall.EWINDOWS
}
func setIPv4ReceiveTTL(fd syscall.Handle, v bool) error {
// NOTE: Not supported yet on any Windows
return syscall.EWINDOWS
}
func ipv4ReceiveDestinationAddress(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this for XP and beyond
return false, syscall.EWINDOWS
}
func setIPv4ReceiveDestinationAddress(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this for XP and beyond
return syscall.EWINDOWS
}
func ipv4HeaderPrepend(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this for XP and beyond
return false, syscall.EWINDOWS
}
func setIPv4HeaderPrepend(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this for XP and beyond
return syscall.EWINDOWS
}
func ipv4ReceiveInterface(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this for Vista and beyond
return false, syscall.EWINDOWS
}
func setIPv4ReceiveInterface(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this for Vista and beyond
return syscall.EWINDOWS
}
func ipv4MulticastInterface(fd syscall.Handle) (*net.Interface, error) {
var v [4]byte
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIP, syscall.IP_MULTICAST_IF, (*byte)(unsafe.Pointer(&v[0])), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
return netIP4ToInterface(net.IPv4(v[0], v[1], v[2], v[3]))
}
func setIPv4MulticastInterface(fd syscall.Handle, ifi *net.Interface) error {
ip, err := netInterfaceToIP4(ifi)
if err != nil {
return os.NewSyscallError("setsockopt", err)
}
var v [4]byte
copy(v[:], ip.To4())
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_MULTICAST_IF, (*byte)(unsafe.Pointer(&v[0])), 4))
}
func ipv4MulticastLoopback(fd syscall.Handle) (bool, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIP, syscall.IP_MULTICAST_LOOP, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv4MulticastLoopback(fd syscall.Handle, v bool) error {
vv := int32(boolint(v))
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_MULTICAST_LOOP, (*byte)(unsafe.Pointer(&vv)), 4))
}
func joinIPv4Group(fd syscall.Handle, ifi *net.Interface, grp net.IP) error {
mreq := syscall.IPMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
if err := setSyscallIPMreq(&mreq, ifi); err != nil {
return err
}
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_ADD_MEMBERSHIP, (*byte)(unsafe.Pointer(&mreq)), int32(unsafe.Sizeof(mreq))))
}
func leaveIPv4Group(fd syscall.Handle, ifi *net.Interface, grp net.IP) error {
mreq := syscall.IPMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
if err := setSyscallIPMreq(&mreq, ifi); err != nil {
return err
}
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIP, syscall.IP_DROP_MEMBERSHIP, (*byte)(unsafe.Pointer(&mreq)), int32(unsafe.Sizeof(mreq))))
}
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