#include <sys/types.h>#include <stdio.h>#include <stdlib.h>#include <strings.h>#include <sys/ioctl.h>#include <unistd.h>#include <fcntl.h>#include "ixjuser.h"int main(int argc, char *argv[]){  int ixj1, hook, m_hook;  char pname1[80], pname2[80];  sprintf(pname1, "/dev/ixj%s", argv[1]);  ixj1 = open(pname1, O_RDWR);  if(ixj1 <= 0)  {    printf("Open failed %s\n", pname1);    exit(0);  }    hook = m_hook = ioctl(ixj1, IXJCTL_HOOKSTATE);  printf("hook state %d\n", hook);  if(!ioctl(ixj1, IXJCTL_RING))    exit(0);  hook = m_hook = ioctl(ixj1, IXJCTL_HOOKSTATE);  printf("hook state %d\n", hook);  while(1)  {    printf("hook state changed to %d m_hook = %d\r", hook, m_hook);    if((hook && !m_hook) || (!hook && m_hook))    {      printf("\t\t\thook state changed to %d\r", hook);      m_hook = hook;    }    hook = ioctl(ixj1, IXJCTL_HOOKSTATE);  }  close(ixj1);}