package main

import (
        "fmt"
        "syscall"
        "unsafe"
)

var currentDepth int

func ioctl(fd int, req uint, arg uintptr) (err error) {
        _, _, e1 := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
        if e1 != 0 {
                fmt.Println("syscall error")
                return nil
        }
        return nil
}

func ioctlTest() (error) {
        var termios syscall.Termios
        err := ioctl(0, syscall.TCGETS, uintptr(unsafe.Pointer(&termios)))
        if (err != nil) {
                return err
        }
        if (termios.Iflag == 0) {
                fmt.Println(currentDepth, termios)
        }
        return nil
}

func tryPoc(depth int) {
        if depth > 0 {
                depth--
                tryPoc(depth)
        }
        ioctlTest()
}

func main() {
        for i := 0; i < 10000; i++ {
                currentDepth = i
                tryPoc(i)
        }
}