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 5 package unix 6 7 import ( 8 "syscall" 9 "unsafe" 10 ) 11 12 func setTimespec(sec, nsec int64) Timespec { 13 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 14 } 15 16 func 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) 21 func 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 31 func 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 37 func (iov *Iovec) SetLen(length int) { 38 iov.Len = uint32(length) 39 } 40 41 func (msghdr *Msghdr) SetControllen(length int) { 42 msghdr.Controllen = uint32(length) 43 } 44 45 func (cmsg *Cmsghdr) SetLen(length int) { 46 cmsg.Len = uint32(length) 47 } 48 49 func 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 62 func 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. 66 const SYS___SYSCTL = SYS_SYSCTL 67