[patch] detach from controlling tty in non-debug mode

[Ondrej Filip]

Florian Lohoff wrote:
> Hi,
> bird needs something like this because in case it daemonizes it still
> keeps the fds open of the controlling tty which is bad in case you'd
> like to log out which then will hang.
> 
> I already opened a Debian Bug - See:
> 
> 	http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=427772
> 
> Flo

Thank you. This will be fixed in next release.

			Ondrej

> 
> diff -Nur bird-1.0.11/sysdep/unix/main.c bird-1.0.11.flo/sysdep/unix/main.c
> --- bird-1.0.11/sysdep/unix/main.c	2007-06-20 09:13:21.000000000 +0200
> +++ bird-1.0.11.flo/sysdep/unix/main.c	2007-06-20 09:21:00.000000000 +0200
> @@ -434,7 +434,18 @@
>  	die("fork: %m");
>        if (pid)
>  	return 0;
> +
>        setsid();
> +
> +      /* Close all FDs and thus detach from controlling tty */
> +      for (i=getdtablesize();i>=0;--i)
> +        close(i);
> +
> +      /* create harmless stdin/out/err */
> +      i=open("/dev/null",O_RDWR);
> +      dup(i);
> +      dup(i);
> +
>      }
>  
>    signal_init();