1 // Copyright 2009 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 amd64,darwin

     6 

     7 package unix

     8 

     9 import (

    10 	"syscall"

    11 	"unsafe"

    12 )

    13 

    14 func setTimespec(sec, nsec int64) Timespec {

    15 	return Timespec{Sec: sec, Nsec: nsec}

    16 }

    17 

    18 func setTimeval(sec, usec int64) Timeval {

    19 	return Timeval{Sec: sec, Usec: int32(usec)}

    20 }

    21 

    22 //sysnb	gettimeofday(tp *Timeval) (sec int64, usec int32, err error)

    23 func Gettimeofday(tv *Timeval) (err error) {

    24 	// The tv passed to gettimeofday must be non-nil

    25 	// but is otherwise unused. The answers come back

    26 	// in the two registers.

    27 	sec, usec, err := gettimeofday(tv)

    28 	tv.Sec = sec

    29 	tv.Usec = usec

    30 	return err

    31 }

    32 

    33 func SetKevent(k *Kevent_t, fd, mode, flags int) {

    34 	k.Ident = uint64(fd)

    35 	k.Filter = int16(mode)

    36 	k.Flags = uint16(flags)

    37 }

    38 

    39 func (iov *Iovec) SetLen(length int) {

    40 	iov.Len = uint64(length)

    41 }

    42 

    43 func (msghdr *Msghdr) SetControllen(length int) {

    44 	msghdr.Controllen = uint32(length)

    45 }

    46 

    47 func (cmsg *Cmsghdr) SetLen(length int) {

    48 	cmsg.Len = uint32(length)

    49 }

    50 

    51 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {

    52 	var length = uint64(count)

    53 

    54 	_, _, e1 := Syscall6(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(unsafe.Pointer(&length)), 0, 0)

    55 

    56 	written = int(length)

    57 

    58 	if e1 != 0 {

    59 		err = e1

    60 	}

    61 	return

    62 }

    63 

    64 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)

    65 

    66 // SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions

    67 // of darwin/amd64 the syscall is called sysctl instead of __sysctl.

    68 const SYS___SYSCTL = SYS_SYSCTL