#include<unistd.h>
#include<stdio.h>
#include<stdlib.h>
#include<signal.h>
#include<errno.h>
int main(void){
  char buf[9001];
  struct sigaction int_handler = {.sa_handler=SIG_IGN};
  sigaction(SIGINT,&int_handler,0);
  while(1){
    if(read(0,buf,sizeof(buf))<0){
      if(errno==EINTR){
        puts("eintr");
      }else{
        printf("%d\n",errno);
      }
    }
  }
  puts("end");
}