_, err := setfsuid(uid)
	return err
}

func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) {
	return signalfd(fd, sigmask, _C__NSIG/8, flags)
}

//sys	Setpriority(which int, who int, prio int) (err error)
//sys	Setxattr(path string, attr string, data []byte, flags int) (err error)

	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func signalfd(fd int, sigmask *Sigset_t, maskSize uintptr, flags int) (newfd int, err error) {
	r0, _, e1 := Syscall6(SYS_SIGNALFD4, uintptr(fd), uintptr(unsafe.Pointer(sigmask)), uintptr(maskSize), uintptr(flags), 0, 0)
	newfd = int(r0)

func (w WaitStatus) Exited() bool { return w&mask == exited }

func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited }

func (w WaitStatus) Stopped() bool { return w&0xFF == stopped }

func (w WaitStatus) Continued() bool { return w == 0xFFFF }

func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }

func (w WaitStatus) ExitStatus() int {
	if !w.Exited() {

func (w WaitStatus) Stopped() bool { return false }

func (w WaitStatus) Continued() bool { return false }

func (w WaitStatus) StopSignal() Signal { return -1 }

func (w WaitStatus) Signaled() bool { return false }

func (w WaitStatus) TrapCause() int { return -1 }

// Timespec is an invented structure on Windows, but here for
// consistency with the syscall package for other operating systems.

func (w WaitStatus) Stopped() bool { return false }

func (w WaitStatus) Continued() bool { return false }

func (w WaitStatus) StopSignal() Signal { return -1 }

func (w WaitStatus) Signaled() bool { return false }

func (w WaitStatus) TrapCause() int { return -1 }

// Timespec is an invented structure on Windows, but here for
// consistency with the corresponding package for other operating systems.