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54 lines
1.2 KiB
54 lines
1.2 KiB
// Copyright 2014 The Go Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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// +build darwin freebsd linux solaris |
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package ipv4 |
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import ( |
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"net" |
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"unsafe" |
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"golang.org/x/net/internal/socket" |
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) |
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var freebsd32o64 bool |
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func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error { |
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var gr groupReq |
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if ifi != nil { |
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gr.Interface = uint32(ifi.Index) |
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} |
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gr.setGroup(grp) |
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var b []byte |
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if freebsd32o64 { |
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var d [sizeofGroupReq + 4]byte |
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s := (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr)) |
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copy(d[:4], s[:4]) |
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copy(d[8:], s[4:]) |
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b = d[:] |
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} else { |
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b = (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))[:sizeofGroupReq] |
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} |
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return so.Set(c, b) |
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} |
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func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error { |
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var gsr groupSourceReq |
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if ifi != nil { |
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gsr.Interface = uint32(ifi.Index) |
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} |
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gsr.setSourceGroup(grp, src) |
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var b []byte |
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if freebsd32o64 { |
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var d [sizeofGroupSourceReq + 4]byte |
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s := (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr)) |
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copy(d[:4], s[:4]) |
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copy(d[8:], s[4:]) |
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b = d[:] |
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} else { |
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b = (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))[:sizeofGroupSourceReq] |
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} |
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return so.Set(c, b) |
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}
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