github.com/Andyfoo/golang/x/net@v0.0.0-20190901054642-57c1bf301704/internal/socket/msghdr_linux_64bit.go (about) 1 // Copyright 2017 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 // +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x 6 // +build linux 7 8 package socket 9 10 import "unsafe" 11 12 func (h *msghdr) setIov(vs []iovec) { 13 l := len(vs) 14 if l == 0 { 15 return 16 } 17 h.Iov = &vs[0] 18 h.Iovlen = uint64(l) 19 } 20 21 func (h *msghdr) setControl(b []byte) { 22 h.Control = (*byte)(unsafe.Pointer(&b[0])) 23 h.Controllen = uint64(len(b)) 24 }