func Fixwd() {
	wdmu.Lock()
	defer wdmu.Unlock()
	fixwdLocked()
}

func fixwdLocked() {
	if !wdSet {
		return
	}
	// always call chdir when getwd returns an error
	wd, _ := getwd()
	if wd == wdStr {
		return
	}
	if err := chdir(wdStr); err != nil {
		return
	}
}

// If any of the paths is relative, call Fixwd and return true

func Open(path string, mode int) (fd int, err error) {
	if fixwd(path) {
		defer runtime.UnlockOSThread()
	}
	return open(path, mode)
}

//sys	create(path string, mode int, perm uint32) (fd int, err error)

func Create(path string, mode int, perm uint32) (fd int, err error) {
	if fixwd(path) {
		defer runtime.UnlockOSThread()
	}
	return create(path, mode, perm)
}