gtsocial-umbx

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sys_asmreq.go (694B)

      1 // Copyright 2013 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || windows
      6 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
      7 
      8 package ipv6
      9 
     10 import (
     11 	"net"
     12 	"unsafe"
     13 
     14 	"golang.org/x/net/internal/socket"
     15 )
     16 
     17 func (so *sockOpt) setIPMreq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
     18 	var mreq ipv6Mreq
     19 	copy(mreq.Multiaddr[:], grp)
     20 	if ifi != nil {
     21 		mreq.setIfindex(ifi.Index)
     22 	}
     23 	b := (*[sizeofIPv6Mreq]byte)(unsafe.Pointer(&mreq))[:sizeofIPv6Mreq]
     24 	return so.Set(c, b)
     25 }