text: // Copyright 2009 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.
  
  // +build 386,freebsd
  
  package unix
  
  import (
  	"syscall"
  	"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)}
  }
  
  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 (msghdr *Msghdr) SetIovlen(length int) {
  	msghdr.Iovlen = int32(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 writtenOut uint64 = 0
  	_, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr((*offset)>>32), uintptr(count), 0, uintptr(unsafe.Pointer(&writtenOut)), 0, 0)
  
  	written = int(writtenOut)
  
  	if e1 != 0 {
  		err = e1
  	}
  	return
  }
  
  func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
  
  func PtraceGetFsBase(pid int, fsbase *int64) (err error) {
  	return ptrace(PTRACE_GETFSBASE, pid, uintptr(unsafe.Pointer(fsbase)), 0)
  }
  
  func PtraceIO(req int, pid int, addr uintptr, out []byte, countin int) (count int, err error) {
  	ioDesc := PtraceIoDesc{Op: int32(req), Offs: (*byte)(unsafe.Pointer(addr)), Addr: (*byte)(unsafe.Pointer(&out[0])), Len: uint32(countin)}
  	err = ptrace(PTRACE_IO, pid, uintptr(unsafe.Pointer(&ioDesc)), 0)
  	return int(ioDesc.Len), err
  }
  