1// Copyright 2015 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
 5package unix
 6
 7import (
 8	"syscall"
 9	"unsafe"
10)
11
12func setTimespec(sec, nsec int64) Timespec {
13	return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
14}
15
16func setTimeval(sec, usec int64) Timeval {
17	return Timeval{Sec: int32(sec), Usec: int32(usec)}
18}
19
20//sysnb	gettimeofday(tp *Timeval) (sec int32, usec int32, err error)
21func Gettimeofday(tv *Timeval) (err error) {
22	// The tv passed to gettimeofday must be non-nil
23	// but is otherwise unused. The answers come back
24	// in the two registers.
25	sec, usec, err := gettimeofday(tv)
26	tv.Sec = int32(sec)
27	tv.Usec = int32(usec)
28	return err
29}
30
31func SetKevent(k *Kevent_t, fd, mode, flags int) {
32	k.Ident = uint32(fd)
33	k.Filter = int16(mode)
34	k.Flags = uint16(flags)
35}
36
37func (iov *Iovec) SetLen(length int) {
38	iov.Len = uint32(length)
39}
40
41func (msghdr *Msghdr) SetControllen(length int) {
42	msghdr.Controllen = uint32(length)
43}
44
45func (cmsg *Cmsghdr) SetLen(length int) {
46	cmsg.Len = uint32(length)
47}
48
49func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
50	var length = uint64(count)
51
52	_, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(*offset>>32), uintptr(unsafe.Pointer(&length)), 0, 0, 0, 0)
53
54	written = int(length)
55
56	if e1 != 0 {
57		err = e1
58	}
59	return
60}
61
62func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) // sic
63
64// SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions
65// of darwin/arm the syscall is called sysctl instead of __sysctl.
66const SYS___SYSCTL = SYS_SYSCTL