getty/login problem

[Denys Vlasenko]

On Wed, Nov 5, 2008 at 7:29 AM,  <lord_fleg at iinet.net.au> wrote:
> when logging on via the serial port (ttyS1) i get prompted for the username when
> i enter it and hit return it gets echoed back to me on the line below, and then
> when i enter the password nothing happens and it eventually times out.
> on entering the username/password a second time all is well.
>
> essentially the same problem described in message...
>
> http://www.busybox.net/lists/busybox/2004-August/012267.html

Which version of busybox do you use?

> so i tried turning off syslogd but this wasnt sufficient, i also

You tried *what*?

> had to remove "console=ttyS1, 9600" from the kernel command line, which
> seems to me to fit in with the advice given in the above message and does remove
> the problem of the first login always failing.  however it means i dont
> see the kernel boot messages.
>
> is there a better solution?  and if not could someone give me an idea
> of how big a job this is to fix and where i should start?

Does it help if you add this line in getty.c?

        /* Open the tty as standard input, if it is not "-" */
        /* If it's not "-" and not taken yet, it will become our ctty */
        debug("calling open_tty\n");
        open_tty(options.tty);
        ndelay_off(0);
+       ioctl(0, TIOCSCTTY, 1); /* another stab at maing it out ctty */
        debug("duping\n");
        xdup2(0, 1);
        xdup2(0, 2);

If this doesn't help, replace all "ioctl(0, TCSETS, tp);" with
"xioctl(0, TCSETS, tp);" - this won't make it work but
may give meaningful error messages instead of silently failing
to work as intended.
--
vda