fcntl(0,F_SETFL,O_ASYNC) & signal(SIGIO,rkbd); don't work in 3.X !!!!

[Semenov]

Why my little proggy can't get SIGIO in FreeBSD 3.3-RELEASE, 
when i type my keyboard?

In 2.2.6-RELEASE it works right.


#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <err.h>
#include <signal.h>
#include <syslog.h>
#include <errno.h>
#include <err.h>

void
rkbd(int sig)
{
      int i,j;
      u_char b[1024],*c;
      
      syslog(LOG_DEBUG,"***** ");

      i=read(0,b,1024);
      if(i<0)
           syslog(LOG_DEBUG,"read failed due to %s",strerror(errno));
      
      else
           if(!i)
                syslog(LOG_DEBUG,"read null bites");
           else{
                b[i]='\0';
                puts("\n******");
                fputs(b,stdout);
                puts("******\n");
                fflush(stdout);
           }
}

int
main(int argc,char **argv)
{
        if(fcntl(0,F_SETFL,O_ASYNC)==-1)
            err(errno,NULL);
        signal(SIGIO,rkbd);
        for(;;){
                sleep(10);
        }
}

S/MIME Cryptographic Signature