[syslinux] Trying to invoke menu.c32 programmatically.

[Antonio Carlini]

H. Peter Anvin wrote:

> That *should* have worked...

Thanks for the quick response.

> Normally what I would recommend is something like:
>
> syslinux_run_kernel_image("menu.c32", "/UBCD/menus/main.cfg", 0,
> IMAGE_TYPE_KERNEL);

Well the first thing I noticed is that neither IMAGE_TYPE_KERNEL
nor syslinux_run_kernel_image seemed to exist anywhere in the
codebase - so I upgraded from 3.36 to 3.51 :-)


> Bugs, of course, do happen.

I'm fully expecting it to be mine. I just cannot find it
right now!

I've modified my code to basically forget my menus and just invoke
runsyslinuxcmd or syslinux_run_kernel_image. So now I have:

/boot/isolinux/isolinux.cfg:
-------------------------------------
DEFAULT /boot/isolinux/vesamenu.c32
PROMPT 0
ALLOWOPTIONS 0
TOTALTIMEOUT 450

LABEL dvd_menu
MENU LABEL ^D  DVD Menu
MENU DEFAULT
KERNEL /boot/isolinux/aio.c32

LABEL ubcd_menu
MENU LABEL ^U  UBCD Menu
KERNEL /boot/isolinux/menu.c32
APPEND /UBCD/menus/main.cfg
-------------------------------------

I've chopped some gunk. Basically if I invoke the UBCD
menu at that point, it works as expected. If I invoke
my DVD menu I end up in my aio.c32 hack of complex.c32.

I've basically now #if 0'd out almost all of my code
and just setvideomode(0x03) followed by a single
fixed command.

Here's what I find while further hacking:

a)   runsyslinuxcmd("/UBCD/isolinux/menu.c32 /UBCD/menus/main.cfg");

This invokes menu.c32 but with /boot/isolinux/isolinux.cfg.

b)   syslinux_run_kernel_image("/UBCD/isolinux/menu.c32",
                               "/UBCD/menus/main.cfg",
                               0, IMAGE_TYPE_KERNEL);

Complains that "No LABEL entries found in configuration file!"
and then sits at the "boot:" prompt.

c)    syslinux_run_kernel_image("menu.c32",
                                "/UBCD/menus/main.cfg",
                                0, IMAGE_TYPE_KERNEL);
This behaves exactly as (b) does.

d)    syslinux_run_kernel_image("vesamenu.c32",
                              "/UBCD/menus/main.cfg",
                              0, IMAGE_TYPE_KERNEL);
This returns to the "boot:" prompt.

I cannot even find a command that, when typed at the "boot:"
prompt, will invoke menu.c32 with the correct menu. If I
try something like:
 boot: /boot/isolinux/menu.c32 /UBCD/menus/main.cfg
it behaves as though it had opened /boot/isolinux/isolinux.cfg
and displays the wrong menu.

Antonio


No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.485 / Virus Database: 269.13.5/990 - Release Date:
04/09/2007 22:36