1// Copyright 2018 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 dragonfly freebsd linux netbsd openbsd
6
7package poll
8
9import (
10	"syscall"
11	"unsafe"
12)
13
14func writev(fd int, iovecs []syscall.Iovec) (uintptr, error) {
15	r, _, e := syscall.Syscall(syscall.SYS_WRITEV, uintptr(fd), uintptr(unsafe.Pointer(&iovecs[0])), uintptr(len(iovecs)))
16	if e != 0 {
17		return r, syscall.Errno(e)
18	}
19	return r, nil
20}
21