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