//sys	Shutdown(s int, how int) (err error)

// In order to use msghdr structure with Control, Controllen in golang.org/x/net,
// nrecvmsg and nsendmsg must be used.
//sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg
//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg

func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {

	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
}

func recvmsgRaw(fd int, p, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn int, recvflags int, err error) {
	var msg Msghdr
	msg.Name = (*byte)(unsafe.Pointer(rsa))
	msg.Namelen = uint32(SizeofSockaddrAny)
	var iov Iovec
	if len(p) > 0 {
		iov.Base = &p[0]
		iov.SetLen(len(p))
	}
	var dummy byte
	if len(oob) > 0 {

func recvmsg(s int, msg *Msghdr, flags int) (n int, err error) {
	r0, _, e1 := syscall6(uintptr(unsafe.Pointer(&libc_nrecvmsg)), 3, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func sendmsg(s int, msg *Msghdr, flags int) (n int, err error) {

				}
				if len(sp) > 0 {
					sa.IsExtended()[0] = 1
				}
				return sp
			}
			sp2 := formatSPD(spd, blk.GNU().Sparse())
			for len(sp2) > 0 {
				var spHdr block
				sp2 = formatSPD(sp2, spHdr.Sparse())
				spb = append(spb, spHdr[:]...)
			}

			// Update size fields in the header block.
			realSize := hdr.Size
			hdr.Size = 0 // Encoded size; does not account for encoded sparse map

	if gogcflags != "" {
		compile = append(compile, strings.Fields(gogcflags)...)
	}
	if len(sfiles) > 0 {
		compile = append(compile, "-asmhdr", goasmh)
	}
	if symabis != "" {
		compile = append(compile, "-symabis", symabis)
	}
	if goos == "android" {
		compile = append(compile, "-shared")
	}

	compile = append(compile, gofiles...)

	// gc runs the compiler in a specific directory on a set of files
	// and returns the name of the generated output file.
	gc(b *Builder, a *Action, archive string, importcfg, embedcfg []byte, symabis string, asmhdr bool, pgoProfile string, gofiles []string) (ofile string, out []byte, err error)
	// cc runs the toolchain's C compiler in a directory on a C file
	// to produce an output file.