How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

[CurlyCoconutTree]

How do I boot a standalone program in grub (1.95) (a password checker via
serial input) before allowing grub to continue booting?  I'm trying to
develop a program that will run, stand alone or with the libraries Grub
gives me access to, parse serial data for a password, store the password to
the MBR, then if valid return to Grub to boot windows... I'm not looking for
a solution, I'm just looking for a place to start!  Grub, is pretty poorly
documented and I wouldn't be posting this is there was more (or I could find
more) info on how to develop for GRUB.  I guess I'd be a 'noob'... I hate
using that term... we all have to start from some where.

-C
-- 
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Re: How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

[Robert Millan]

On Sat, Nov 03, 2007 at 09:58:37AM -0700, CurlyCoconutTree wrote:
> 
> How do I boot a standalone program in grub (1.95) (a password checker via
> serial input) before allowing grub to continue booting?  I'm trying to
> develop a program that will run, stand alone or with the libraries Grub
> gives me access to, parse serial data for a password, store the password to
> the MBR, then if valid return to Grub to boot windows... I'm not looking for
> a solution, I'm just looking for a place to start!  Grub, is pretty poorly
> documented and I wouldn't be posting this is there was more (or I could find
> more) info on how to develop for GRUB.  I guess I'd be a 'noob'... I hate
> using that term... we all have to start from some where.

IIRC someone implemented password checks in boot already, or was working on
that, but hasn't been merged yet.  I suggest you check the mailing list
archives.

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call, if you are unable to speak?
(as seen on /.)

Re: How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

[Andrei E. Warkentin]

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.... I think the actual question should have been worded more like  
"is it possible to return control to GRUB from a booted   (say)  
Multiboot kernel, provided nothing (say) below 1MB is touched...".

Is it possible? I'm curious myself.

Andrei Evgenievich Warkentin
andrey.warkentin@gmail.com
Cell: (+1) (847) 321-15-55


05.11.2007, в 9:35, Robert Millan писал(а):

> On Sat, Nov 03, 2007 at 09:58:37AM -0700, CurlyCoconutTree wrote:
>>
>> How do I boot a standalone program in grub (1.95) (a password  
>> checker via
>> serial input) before allowing grub to continue booting?  I'm  
>> trying to
>> develop a program that will run, stand alone or with the libraries  
>> Grub
>> gives me access to, parse serial data for a password, store the  
>> password to
>> the MBR, then if valid return to Grub to boot windows... I'm not  
>> looking for
>> a solution, I'm just looking for a place to start!  Grub, is  
>> pretty poorly
>> documented and I wouldn't be posting this is there was more (or I  
>> could find
>> more) info on how to develop for GRUB.  I guess I'd be a 'noob'...  
>> I hate
>> using that term... we all have to start from some where.
>
> IIRC someone implemented password checks in boot already, or was  
> working on
> that, but hasn't been merged yet.  I suggest you check the mailing  
> list
> archives.
>
> -- 
> Robert Millan
>
> <GPLv2> I know my rights; I want my phone call!
> <DRM> What use is a phone call, if you are unable to speak?
> (as seen on /.)
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel


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Re: How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

[Christopher Walker]

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I know someone was working on this.  I need to create my own program for
personal use.

On 11/5/07, Robert Millan <rmh@aybabtu.com> wrote:
>
> On Sat, Nov 03, 2007 at 09:58:37AM -0700, CurlyCoconutTree wrote:
> >
> > How do I boot a standalone program in grub (1.95) (a password checker
> via
> > serial input) before allowing grub to continue booting?  I'm trying to
> > develop a program that will run, stand alone or with the libraries Grub
> > gives me access to, parse serial data for a password, store the password
> to
> > the MBR, then if valid return to Grub to boot windows... I'm not looking
> for
> > a solution, I'm just looking for a place to start!  Grub, is pretty
> poorly
> > documented and I wouldn't be posting this is there was more (or I could
> find
> > more) info on how to develop for GRUB.  I guess I'd be a 'noob'... I
> hate
> > using that term... we all have to start from some where.
>
> IIRC someone implemented password checks in boot already, or was working
> on
> that, but hasn't been merged yet.  I suggest you check the mailing list
> archives.
>
> --
> Robert Millan
>
> <GPLv2> I know my rights; I want my phone call!
> <DRM> What use is a phone call, if you are unable to speak?
> (as seen on /.)
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>

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Re: How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

[Robert Millan]

On Mon, Nov 05, 2007 at 10:57:52AM -0600, Andrei E. Warkentin wrote:
> .... I think the actual question should have been worded more like  
> "is it possible to return control to GRUB from a booted   (say)  
> Multiboot kernel, provided nothing (say) below 1MB is touched...".
> 
> Is it possible? I'm curious myself.

No.

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call, if you are unable to speak?
(as seen on /.)

Re: How do I boot a standalone program in grub (a password checker via serial input) before allowing grub to continue booting?

[Marco Gerards]

CurlyCoconutTree <misfitsskatermonkey@yahoo.com> writes:

> How do I boot a standalone program in grub (1.95) (a password checker via
> serial input) before allowing grub to continue booting?  I'm trying to
> develop a program that will run, stand alone or with the libraries Grub
> gives me access to, parse serial data for a password, store the password to
> the MBR, then if valid return to Grub to boot windows... I'm not looking for
> a solution, I'm just looking for a place to start!  Grub, is pretty poorly
> documented and I wouldn't be posting this is there was more (or I could find
> more) info on how to develop for GRUB.  I guess I'd be a 'noob'... I hate
> using that term... we all have to start from some where.

Noone is using that term.  We also value good documentation and will
be very happy if you could work on that.

One way of doing this might be writing a new command.  See
hello/hello.c as an example.

--
Marco