Re: [Etherboot-discuss] set identifiers

[Michael B. <mb...@fe...>]

On Thursday 28 May 2009 22:51:53 Luca wrote:
> Would it be possible to add a new identifier, which could be set only via
> script or shell but not via DHCP?
>
> I have tried creating a new
>
> struct setting _new_identifier_ __setting = {
>  .name="new-identifier",
>  .description="New identifier description",
>  .type=&setting_type_string,
>  .tag=DHCP_EB_NEW_IDENTIFIER,
> }
>
> and the
> struct setting_applicator new_identifier_applicator __setting_applicator =
> { .apply=my_new_identifier_apply;
> }
>
> This way  I can set/show the new_identifier. My understanding (but I might
> be wrong) is that having the .tag,  the new_identifier might be set also
> via dhcp, which is something I don't want to happen. Is there a way to have
> an identifier set only via script or shell?

If you omit the .tag altogether, then you will end up with what you want to 
achieve, I think.

Note that as of a few days ago, gPXE supports arbitrary identifier names 
anyway.  If you are planning to access this variable only from within the 
shell (i.e. if you *don't* have an applicator), then you don't need to add 
any extra gPXE code at all, you can just do

   set new-identifier some-value
   ....
   ....
   echo ${new-identifier}

Michael