| // 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. |
| |
| //go:build darwin || freebsd || linux || solaris |
| // +build darwin freebsd linux solaris |
| |
| package ipv4 |
| |
| import ( |
| "net" |
| "unsafe" |
| |
| "golang.org/x/net/internal/socket" |
| ) |
| |
| func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error { |
| var gr groupReq |
| if ifi != nil { |
| gr.Interface = uint32(ifi.Index) |
| } |
| gr.setGroup(grp) |
| var b []byte |
| if compatFreeBSD32 { |
| var d [sizeofGroupReq + 4]byte |
| s := (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr)) |
| copy(d[:4], s[:4]) |
| copy(d[8:], s[4:]) |
| b = d[:] |
| } else { |
| b = (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))[:sizeofGroupReq] |
| } |
| return so.Set(c, b) |
| } |
| |
| func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error { |
| var gsr groupSourceReq |
| if ifi != nil { |
| gsr.Interface = uint32(ifi.Index) |
| } |
| gsr.setSourceGroup(grp, src) |
| var b []byte |
| if compatFreeBSD32 { |
| var d [sizeofGroupSourceReq + 4]byte |
| s := (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr)) |
| copy(d[:4], s[:4]) |
| copy(d[8:], s[4:]) |
| b = d[:] |
| } else { |
| b = (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))[:sizeofGroupSourceReq] |
| } |
| return so.Set(c, b) |
| } |