[bug #33236] config files embedded in core.img can not declare menuentrys

[Patrick]

URL:
  <http://savannah.gnu.org/bugs/?33236>

                 Summary: config files embedded in core.img can not declare
menuentrys
                 Project: GNU GRUB
            Submitted by: p55
            Submitted on: Thu 05 May 2011 09:35:22 AM GMT
                Category: Configuration
                Severity: Major
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Patrick
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: Bazaar - trunk
         Reproducibility: Every Time
         Planned Release: None

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Details:

It should be possible to execute the embedded config file in "normal mode"

I have been investigating grub for several hours just now and have been able
to implement the feature.

There is, though, of course more than one way to do it. Grub is NOT lacking
concepts and levels of abstraction.

The basic "problem" is that "normal mode" relies on _files_. Functions in
grub-core/normal/main.c expect file paths.

The way I approached the task was basically to move the grub_load_config()
function from kern/main.c to normal/main.c and duplicate some functions in
normal/main.c to make them accept char* buffers instead of grub_file_t as
arguments. It works nicely so far. But is not compatible with the current
behavior.

I have 2 possibilities how to proceed now and would like to know which would
have more chances to be included in the trunk.

 1. write a module which basically does the same like kern/main.c does. The
module would provide a special function that would "take over" control from
kern/main.c as soon as it gets called from the embedded config file. The
embedded config config file would then start with
  embedded_normal
or something like that and the module would switch mode and never return
control to kern/main.c

 2. adjust kern/main.c and normal/main.c and make grub switch to "normal mode"
in case
  normal
is called from an embedded config file and NOT load (prefix)/grub.cfg. If
"normal" is not called, switch to normal mode and load /grub.cfg, just like
before.

Method 2 would use significantly less code I think. Should I give it a try? (I
actually don't really have the time anytime soon anyway... :-) maybe somebody
else would like doing it as well... )

Thoughts??




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