Re: [LI] Hiding LKM's -- Beta-test

[Vimal Mathew <vml@xxxxxxxxxxxxx>]

Hi,

	I patched the SGI kernel debugger into my kernel today morning and
found the assembly equivalent of the foll. C lines

        /* Initialize the module.  */
        atomic_set(&mod->uc.usecount,1);
        if (mod->init && mod->init() != 0) {
                atomic_set(&mod->uc.usecount,0);
                error = -EBUSY;
                goto err0;
        }
to be

sys_init_module+0x433:		movl	$01,0x10(%ebx)
sys_init_module+0x43a:		movl	0x2c(%ebx),%edx
sys_init_module+0x43d:		testl	%edx,%edx
sys_init_module+0x43f:		je	sys_init_module+0x458
sys_init_module+0x441:		call	*%edx
sys_init_module+0x443:		testl	%eax,%eax
sys_init_module+0x445:		je	sys_init_module+0x458
sys_init_module+0x447:		movl	$0x0,0x10(%ebx)
sys_init_module+0x44e:		movl	$0xfffffff0,0xffffffac(%ebp)
sys_init_module+0x455:		jmp	sys_init_module+0x4be

"mod" seems to be stored in %ebx for quite some time (I think from its
first occurence in sys_init_module, even). I dont know why.

And, about my original question, if I take my module out of the module link-
list, will it cause any problems? Till now, my modules have only been 
replacing other system-calls (such as "getdents"). Would the kernel try
to reuse my kernel-memory (garbage-collection?) if I dont belong to the
module-list?

TIA
--vml,
Model Engg. College,
Cochin
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