|  | // Copyright 2014 The Go Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file. | 
|  |  | 
|  | package syscall | 
|  |  | 
|  | import "unsafe" | 
|  |  | 
|  | func setTimespec(sec, nsec int64) Timespec { | 
|  | return Timespec{Sec: int32(sec), Nsec: int32(nsec)} | 
|  | } | 
|  |  | 
|  | func setTimeval(sec, usec int64) Timeval { | 
|  | return Timeval{Sec: int32(sec), Usec: int32(usec)} | 
|  | } | 
|  |  | 
|  | //sysnb	gettimeofday(tp *Timeval) (sec int32, usec int32, err error) | 
|  | func Gettimeofday(tv *Timeval) error { | 
|  | // The tv passed to gettimeofday must be non-nil | 
|  | // but is otherwise unused. The answers come back | 
|  | // in the two registers. | 
|  | sec, usec, err := gettimeofday(tv) | 
|  | if err != nil { | 
|  | return err | 
|  | } | 
|  | if sec != 0 || usec != 0 { | 
|  | tv.Sec = int32(sec) | 
|  | tv.Usec = int32(usec) | 
|  | } | 
|  | return nil | 
|  | } | 
|  |  | 
|  | func SetKevent(k *Kevent_t, fd, mode, flags int) { | 
|  | k.Ident = uint32(fd) | 
|  | k.Filter = int16(mode) | 
|  | k.Flags = uint16(flags) | 
|  | } | 
|  |  | 
|  | func (iov *Iovec) SetLen(length int) { | 
|  | iov.Len = uint32(length) | 
|  | } | 
|  |  | 
|  | func (msghdr *Msghdr) SetControllen(length int) { | 
|  | msghdr.Controllen = uint32(length) | 
|  | } | 
|  |  | 
|  | func (cmsg *Cmsghdr) SetLen(length int) { | 
|  | cmsg.Len = uint32(length) | 
|  | } | 
|  |  | 
|  | func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { | 
|  | var length = uint64(count) | 
|  |  | 
|  | _, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(*offset>>32), uintptr(unsafe.Pointer(&length)), 0, 0, 0, 0) | 
|  |  | 
|  | written = int(length) | 
|  |  | 
|  | if e1 != 0 { | 
|  | err = e1 | 
|  | } | 
|  | return | 
|  | } | 
|  |  | 
|  | func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno) // sic |