diff options
Diffstat (limited to 'vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go')
-rw-r--r-- | vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go b/vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go new file mode 100644 index 000000000..9d4069ff5 --- /dev/null +++ b/vendor/golang.org/x/net/ipv4/sockopt_asmreqn_unix.go @@ -0,0 +1,42 @@ +// 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 darwin freebsd linux + +package ipv4 + +import ( + "net" + "os" + "unsafe" + + "golang.org/x/net/internal/iana" +) + +func getsockoptIPMreqn(s uintptr, name int) (*net.Interface, error) { + var mreqn sysIPMreqn + l := uint32(sysSizeofIPMreqn) + if err := getsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), &l); err != nil { + return nil, os.NewSyscallError("getsockopt", err) + } + if mreqn.Ifindex == 0 { + return nil, nil + } + ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex)) + if err != nil { + return nil, err + } + return ifi, nil +} + +func setsockoptIPMreqn(s uintptr, name int, ifi *net.Interface, grp net.IP) error { + var mreqn sysIPMreqn + if ifi != nil { + mreqn.Ifindex = int32(ifi.Index) + } + if grp != nil { + mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]} + } + return os.NewSyscallError("setsockopt", setsockopt(s, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), sysSizeofIPMreqn)) +} |