[Buildroot] avoiding the need to enter password

[Buildroot] avoiding the need to enter password

[Kevin Wilson]

Hi,
When booting to Buildroot  (which I had built from tree) I get the message:
Welcome to Buildroot
buildroot login:

Is there a way to disable the need to enter password so that it will boot
automatically instead that I will have each time enter the default
password (which is "root")?

rgs
Kevin

[Buildroot] avoiding the need to enter password

[Thomas Petazzoni]

Le Sat, 4 Aug 2012 12:48:19 +0300,
Kevin Wilson <wkevils@gmail.com> a ?crit :

> When booting to Buildroot  (which I had built from tree) I get the
> message: Welcome to Buildroot
> buildroot login:
> 
> Is there a way to disable the need to enter password so that it will
> boot automatically instead that I will have each time enter the
> default password (which is "root")?

The default password is not "root". The default password is empty.

You can change /etc/inittab so that instead of starting /sbin/getty it
starts /bin/sh. But obviously, doing so that anyone connecting to your
system with a serial port has direct root access.

But generally, this isn't needed: you just start whatever application
you need through /etc/init.d/ scripts, and those applications get
started regardless of whether you logged into the system or not.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] avoiding the need to enter password

[Kevin Wilson]

Thanks.

> doing so that anyone connecting to your
> system with a serial port has direct root access.
This is ok.

I tried it replacing  /bin.sh instead of the
/sbin/getty line in /etc/inittab and indeed it boots into prompt
without need to enter password.
Is there a way to enforce it running the /etc/profile in boot
in such a case ?
(It seems to me that /etc/profile is not executed)


On Sat, Aug 4, 2012 at 2:05 PM, Thomas Petazzoni
<thomas.petazzoni@free-electrons.com> wrote:
> Le Sat, 4 Aug 2012 12:48:19 +0300,
> Kevin Wilson <wkevils@gmail.com> a ?crit :
>
>> When booting to Buildroot  (which I had built from tree) I get the
>> message: Welcome to Buildroot
>> buildroot login:
>>
>> Is there a way to disable the need to enter password so that it will
>> boot automatically instead that I will have each time enter the
>> default password (which is "root")?
>
> The default password is not "root". The default password is empty.
>
> You can change /etc/inittab so that instead of starting /sbin/getty it
> starts /bin/sh. But obviously, doing so that anyone connecting to your
> system with a serial port has direct root access.
>
> But generally, this isn't needed: you just start whatever application
> you need through /etc/init.d/ scripts, and those applications get
> started regardless of whether you logged into the system or not.
>
> Best regards,
>
> Thomas
> --
> Thomas Petazzoni, Free Electrons
> Kernel, drivers, real-time and embedded Linux
> development, consulting, training and support.
> http://free-electrons.com

[Buildroot] avoiding the need to enter password

[Thomas Petazzoni]

Le Sat, 4 Aug 2012 16:55:08 +0300,
Kevin Wilson <wkevils@gmail.com> a ?crit :

> I tried it replacing  /bin.sh instead of the
> /sbin/getty line in /etc/inittab and indeed it boots into prompt
> without need to enter password.
> Is there a way to enforce it running the /etc/profile in boot
> in such a case ?
> (It seems to me that /etc/profile is not executed)

Try:

ttyS0::respawn:-/bin/sh

(i.e add a '-' in front of the /bin/sh command. It will make your shell
a login shell, which I think should tell the shell to
read /etc/profile).

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com