URL:
<http://savannah.gnu.org/bugs/?22750>
Summary: broken module init
Project: GNU GRUB
Submitted by: zubkov
Submitted on: Четверг 27.03.2008 at 09:21
Category: None
Severity: Major
Priority: 5 - Normal
Item Group: Software Error
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 1.96
Reproducibility: Every Time
Planned Release:
_______________________________________________________
Details:
Several days I was trying to make grub2 work on my server. It seems that it
cannot see bios disk for some reason. Using debug print I found this. Let's
look at biosdisk module source, for example:
disk/i386/pc/biosdisk.c:
----
GRUB_MOD_INIT(biosdisk)
{
...
----
This is begin of definition of init function of module.
Next, look at definition of GRUB_MOD_INIT macro:
include/grub/dl.h:
----
#define GRUB_MOD_INIT(name) \
static void grub_mod_init (grub_dl_t mod __attribute__ ((unused)))
__attribute__ ((used)); \
void grub_##name##_init (void); \
void \
grub_##name##_init (void) { grub_mod_init (0); } \
static void \
grub_mod_init (grub_dl_t mod __attribute__ ((unused)))
----
As we see it will make exported function grub_biosdisk_init. And finally,
let's see at module loading procedure:
kern/dl.c:
----
if (grub_strcmp (name, "grub_mod_init") == 0)
mod->init = (void (*) (grub_dl_t)) sym->st_value;
----
Here we see, that init function of a module is expecting grub_mod_init and so
it remains nil and not run at all.
May be I mistakes about this symbol mesh, but inserted debug print showed
that: module init function doesn't get called, biosdisk exports only
grub_biosdisk_fini and grub_biosdisk_init and no grub_mod_init.
For the case if I have really broken compiler or system, here is some info:
CPU Intel Xeon 3060
gcc version 4.1.2, target x86_64-pc-linux-gnu
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?22750>
_______________________________________________
Message sent via/by Savannah
http://savannah.gnu.org/
_______________________________________________
Bug-grub mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/bug-grub
