}

	m := 0
	for ; m < n && b[m] == ' '; m++ {
	}

	return atoi(b[m : n-1]), nil
}

func Getpid() (pid int) {
	n, _ := readnum("#c/pid")
	return int(n)
}

func Getppid() (ppid int) {
	n, _ := readnum("#c/ppid")
	return int(n)
}

func Read(fd int, p []byte) (n int, err error) {
	return Pread(fd, p, -1)
}

func Write(fd int, p []byte) (n int, err error) {